Patent Publication Number: US-2012034039-A1

Title: Landscape Erosion Control Fabric with Mulch Blocking Members

Description:
FIELD OF THE DISCLOSURE 
     The present disclosure generally relates to erosion control units, and more particularly to landscape erosion control units configured to retain/hold landscaping materials. 
     BACKGROUND OF THE DISCLOSURE 
     Landscaping on a slope presents problems with regard to maintenance thereof due to accessibility issues and erosion of the land area. In general, slopes are often landscaped with a weed control fabric/base fabric to either decrease or eliminate routine maintenance. Further, a landscaping material, such as mulch, is applied on the top of the base fabric for water conservation, weed control, and beautification. Unfortunately, the mulch gradually slides downhill due to wind, and rain and foot traffic, while exposing the base fabric. Thereafter, the base fabric tends to undergo damage due to creation of unsightly bare spots, Ultra Violet (UV) degradation, and fraying. 
     In order to overcome the above problem, various conventional landscape fabrics and/or landscape erosion control structures/units have been employed to date to provide appropriate landscape erosion control functionality. However, most of the available structures/units are still incapable of effectively retaining the landscaping materials. Further, with the conventional structures/units, it becomes extremely difficult to spread the landscaping materials over the top of a base fabric with a tool (such as a rake) during the initial spreading of the landscaping materials. Furthermore, methods of employing mulch or any other landscaping material may prove to be not cost-effective and labor-intensive as the available structures/units turn out to be ineffective in trapping the landscaping materials. Also, the conventional structures/units are often found to be cumbersome, and accordingly, it becomes difficult to roll, ship, store, and/or install such structures/units. 
     Accordingly, there is a need for a long lasting and efficient landscape erosion control unit configured to effectively retain landscaping materials, and configured to be easily manufactured, rolled, shipped, stored and/or installed. 
     SUMMARY OF THE DISCLOSURE 
     In view of the foregoing disadvantages inherent in the prior art, the general purpose of the present disclosure is to provide landscape erosion control units, retention structures and a method for fabricating the landscape erosion control units, to include all advantages of the prior art, and to overcome the drawbacks inherent in the prior art. 
     An object of the present disclosure is to provide an effective, inexpensive, efficient means for appropriately retaining landscaping materials for erosion control. 
     Another object of the present disclosure is to provide a means that facilitates an easy and reliable spreading of the landscaping materials over a base fabric for erosion control. 
     Another object of the present disclosure is to provide a light-weight means for erosion control that is easy to roll, ship, store, and/or install over an area of land. 
     To achieve the above objects, in one aspect, the present disclosure provides a landscape erosion control unit for retaining landscaping materials. The landscape erosion control unit includes a base structure and a plurality of retention structures attached to the base structure. Each retention structure of the plurality of retention structures includes a strip, and a plurality of protruding members extending outwardly from the strip. Each protruding member of the plurality of protruding members is configured to hold the landscaping materials. Further, each protruding member of the plurality of protruding members includes a bottom portion extending from the strip, a top portion away from the strip, and an intermediate portion between the top portion and the bottom portion. Each retention structure is configured as an integral unit from a material by at least one of cutting and patterning the material. 
     In another aspect, the present disclosure provides a landscape erosion control unit for retaining landscaping materials that includes a base structure and a plurality of retention structures attached to the base structure. Each retention structure of the plurality of retention structures includes at least one strip patterned to form one or more protruding members configured to extend outwardly from the base structure. Each protruding member of the plurality of protruding members is configured to hold the landscaping materials. Each protruding member includes a top portion configured away from the base structure, a bottom portion configured towards the base structure, and an intermediate portion between the top portion and the bottom portion. 
     In yet another aspect, the present disclosure provides a retention structure for retaining landscaping materials that includes a plurality of protruding members. Each protruding member of the plurality of protruding members is configured to hold the landscaping materials. Each protruding member includes a top portion, a bottom portion adapted to extend from a base structure, and an intermediate portion between the top portion and the bottom portion. Further, each protruding member is formed from a material by at least one of cutting, patterning and bending the material. 
     In still another aspect, the present disclosure provides a method for fabricating a landscape erosion control unit for retaining landscaping materials. The method includes providing a starting material, and patterning the starting material to configure a retention structure including a plurality of protruding members. Each protruding member of the plurality of protruding members is configured to have a predetermined dimension in order to hold the landscaping materials. Each protruding member further includes a top portion, a bottom portion, and an intermediate portion between the top portion and the bottom portion. The starting material is patterned by at least one of cutting, die cutting, stamping, compressing, bending, bonding, thermo molding, laminating, injection molding and open casting. 
     These together with the other aspects of the present disclosure, along with the various features of novelty that characterize the present disclosure, are pointed out with particularity in the claims annexed hereto and form a part of the present disclosure. For a better understanding of the present disclosure, its operating advantages, and the specified objects attained by its uses, reference should be made to the accompanying drawings and descriptive matter in which there are illustrated exemplary embodiments of the present disclosure. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The advantages and features of the present disclosure will be better understood with reference to the following detailed description and claims taken in conjunction with the accompanying drawings, wherein like elements are identified with like symbols, and in which: 
         FIG. 1  illustrates a perspective view of a landscape erosion control unit, in accordance with an embodiment of the present disclosure; 
         FIG. 2  illustrates another perspective partial view of the landscape erosion control unit of  FIG. 1 ; 
         FIG. 3  illustrates a perspective view of a retention structure of the landscape erosion control unit of  FIG. 1 , in accordance with an embodiment of the present disclosure; 
         FIG. 4  illustrates a perspective view of the landscape erosion control unit of  FIG. 2  with a frame; 
         FIGS. 5-11  illustrate different views of a retention structure of the landscape erosion control unit of  FIG. 1 , in accordance with other embodiments of the present disclosure; 
         FIG. 12  illustrates a perspective view of a landscape erosion control unit, in accordance with another embodiment of the present disclosure; 
         FIG. 13  illustrates a front view of two adjacent retention structures of the landscape erosion control unit of  FIG. 12 , in accordance with an embodiment of the present disclosure; 
         FIG. 14  illustrates a side view of the landscape erosion control unit of  FIG. 12 ; 
         FIG. 15  illustrates a front view of a landscape erosion control unit, in accordance with yet another embodiment of the present disclosure; 
         FIG. 16  illustrates a front view of a retention structure of the landscape erosion control unit of  FIG. 15 ; 
         FIG. 17  illustrates a front view of the landscape erosion control unit of  FIG. 15 , in accordance with yet another embodiment of the present disclosure; 
         FIG. 18  illustrates a front view of a retention structure of the landscape erosion control unit of  FIG. 17 ; 
         FIG. 19  illustrates a flow chart for a method for fabrication of the landscape erosion control units of  FIGS. 1 ,  12 ,  15  and  17 , in accordance with an embodiment of the present disclosure; 
         FIG. 20  illustrates a perspective view of a starting material for fabricating the retention structure of  FIG. 5 , using the method of  FIG. 19 ; 
         FIG. 21  illustrates a perspective view of an intermediate structure obtained by patterning the starting material of  FIG. 20 ; and 
         FIGS. 22-29  illustrate intermediate structures patterned from respective starting materials. 
     
    
    
     Like reference numerals refer to like parts throughout the description of the drawings. 
     DETAILED DESCRIPTION OF THE DISCLOSURE 
     The exemplary embodiments described herein in detail for illustrative purposes are subject to many variations in structure and design. It should be emphasized, however, that the present disclosure is not limited to a particular landscape erosion control unit, a retention structure and a method for fabrication of the landscape erosion control unit, as shown and described. It is understood that various omissions and substitutions of equivalents are contemplated as circumstances may suggest or render expedient, but these are intended to cover the application or embodiments without departing from the spirit or scope of the claims of the present disclosure. Also, it is to be understood that the phraseology and terminology used herein are for the purpose of description and should not be regarded as limiting. 
     The use of “including,” “comprising,” or “having” and variations thereof herein is meant to encompass the items listed thereafter and equivalents thereof as well as additional items. Further, the terms, “a” and “an” herein do not denote a limitation of quantity, but rather denote the presence of at least one of the referenced item. Unless limited otherwise, the terms “attached,” “coupled,” and variations thereof herein are used broadly and encompass direct and indirect attachments and couplings. 
     In one aspect, the present disclosure provides a landscape erosion control unit for retaining landscape materials (such as straw and mulch) for erosion control. The landscape erosion control unit is configured to be applied/installed over an area of land, such as a sloped area/site, for erosion control. Various embodiments of the landscape erosion control unit of the present disclosure are provided in  FIGS. 1-18 . 
       FIG. 1  depicts a landscape erosion control unit  10  of the present disclosure. The landscape erosion control unit  10  includes a base structure  100 . The base structure  100  is a landscape fabric composed of a polymeric material, and more specifically, an open weave mat material (a woven landscape fabric). Alternatively, the base structure  100  may be a non-woven landscape fabric. Also, the base structure  100  may be a rectangular shaped structure provided in the form of a roll. However, the base structure  100  may have any other suitable shape. 
     Further, the landscape erosion control unit  10  includes a plurality of retention structures  200  attached to the base structure  100 , as depicted in  FIGS. 1 and 2 . Each retention structure of the retention structures  200  is one of fixedly attached and removably attached to the base structure  100 . The retention structures  200  may be arranged either in a vertical orientation or a horizontal orientation depending on the orientation of the base structure  100  and dimensions of a sloped area on which the landscape erosion control unit  10  is to be applied. 
     Each retention structure of the retention structures  200  includes a strip  210  and a plurality of protruding members  220  extending outwardly from the strip  210 , as depicted in  FIGS. 1-3 . Each protruding member of the protruding members  220  is configured to hold the landscaping materials. Each protruding member of the protruding members  220  includes a top portion  224  away from the strip  210 , a bottom portion  222  extending from the strip  210 , and an intermediate portion  226  between the top portion  224  and the bottom portion  222 , as depicted in  FIG. 3 . Each retention structure of the retention structures  200  is configured as an integral unit from a material by at least one of cutting and patterning the material. Further, each retention structure may be composed of a polymeric material. Additionally, the retention structures  200  may have either a black color or any dark color corresponding to the color of the landscaping materials. 
     Furthermore, each protruding member of the protruding members  220  is configured to have a shape of one of a stud, a triangle, a square, a wave, and a hemisphere. For the purpose of the present disclosure, each protruding member is configured to have a shape of a stud, as depicted in  FIGS. 1-3 . However, it will be evident that the shape of each protruding member should not be considered as a limitation to the present disclosure. In addition, each protruding member of the protruding members  220  may be inclined at an angle relative to at least one of the strip  210  and the base structure  100 . Specifically, each protruding member of the protruding members  220  may be inclined at an angle of about 45 degrees from the base structure  100 . 
     Further, two adjacent protruding members of the protruding members  220  are configured in a manner such that corresponding bottom portions of the two adjacent protruding members are joined together through the strip  210 . Specifically, the corresponding bottom portions of the two adjacent protruding members are joined in one of a spaced apart relation and a continuous manner. For the purpose of this description, the corresponding bottom portions of the two adjacent protruding members are joined in a spaced apart relation through the strip  210 , as depicted in  FIGS. 2 and 3 . Specifically, each protruding member may be configured at a distance ranging from about 4.8 centimeters (cm) to about 5 cm from an adjacent protruding member. Further, each protruding member may have a height ranging from about 4 cm to about 4.5 cm, a thickness of about 0.65 millimeters (mm), and a width (base) ranging from about 1.5 cm to about 2 cm. However, the aforementioned shape, dimension, and distance of the protruding members  220  should not be considered as a limitation to the present disclosure. Moreover, the strip  210  is a rectangular strip that may have a width of about 5 mm, and a length of about 100 cm or 1100 mm. However, the aforementioned shape and dimension of the strip  210  should not be considered as a limitation to the present disclosure. 
     As described above, each retention structure of the retention structures  200  is fabricated while having the strip  210  along with the protruding members  220  as an integral unit. Further, the landscape erosion control unit  10 , in its entirety, may also be fabricated as a single integral unit, i.e., the base structure  100  and the retention structures  200  may be configured as an integral unit. 
     Referring to  FIG. 4 , the landscape erosion control unit  10  may further include a frame  300  to support the retention structures  200  and to facilitate the attachment of the retention structures  200  to the base structure  100 . The frame  300  assists in encasing the retention structures  200  to help hold the retention structures  200  in place during the attachment to the base structure  100 . The frame  300  may be applied either manually to the ground or with the help of a machine automated process. The frame  300  is shown to have a specific shape based on the arrangement and dimensions of the retention structures  200 . However, the shape and dimension of the frame  300  may vary based on the structural configuration of the landscape erosion control unit  10 . 
     According to another embodiment of the present disclosure, each retention structure of the retention structures  200  is fabricated to have the protruding members  220  with a shape of a triangle, as depicted in  FIG. 5 . Further, the protruding members  220  may either be configured vertically relative to the strip  210  (as depicted in  FIG. 5 ) or inclined at an angle ‘θ’ (such as an angle of about 45 degrees) relative to the strip  210  (as depicted in  FIG. 6 ). Furthermore, the protruding members  220  may be configured to have an elongated triangular shape, as depicted in  FIG. 7 . 
     As depicted in  FIGS. 5 and 6 , the corresponding bottom portions of the two adjacent protruding members of the protruding members  220  are joined together in a spaced apart relation through the strip  210 . Alternatively, the corresponding bottom portions of the two adjacent protruding members of the protruding members  220  may be joined together in a continuous manner, as depicted in  FIGS. 8 and 9 . Further, each protruding member of the protruding members  220  of  FIGS. 8 and 9  may have a height ranging from about 4 cm to about 4.5 cm, a thickness ranging from about 0.4 mm to about 0.65 mm, and a width (base) of about 2.4 cm. However, the aforementioned shape and dimension of the protruding members  220  should not be considered as a limitation to the present disclosure. Moreover, the strip  210  (as depicted in  FIGS. 8 and 9 ) is a rectangular strip that may have a width ranging from about 0.5 mm to about 1 mm, and a length of about 110 cm. However, the aforementioned shape and dimension of the strip  210  should not be considered as a limitation to the present disclosure. 
     According to yet another embodiment of the present disclosure, the protruding members  220  may be configured to have an irregular shape, as depicted in  FIG. 10 . Alternatively, the protruding members  220  may be configured to have a shape of a hemisphere, as depicted in  FIG. 11 . It will be evident that based on the overall shape of each of the protruding members  220 , the shape of the bottom portion  222 , the top portion  224 , and the intermediate portion  226  may vary. 
     In another aspect, the present disclosure provides a landscape erosion control unit  40  for retaining landscaping materials, as depicted in  FIG. 12 . The landscape erosion control unit  40  includes a base structure  400  and a plurality of retention structures  500  attached to the base structure  400 . Each retention structure of the retention structures  500  is one of fixedly attached and removably attached to the base structure  400 . The base structure  400  may be a rectangular shaped structure provided as a roll, and may be composed of a non-woven polymeric material. 
     Each retention structure of the retention structures  500  includes at least one strip patterned to form one or more protruding members configured to extend outwardly from the base structure  400 . For the purpose of this description, each retention structure of the retention structures  500  includes a single strip, such as a strip  510 , patterned (by bending) to form a plurality of protruding members  520  configured to extend outwardly from the base structure  400  (as depicted in  FIGS. 12-14 ). Specifically, each protruding member (upside down ‘V’ shaped member) of the protruding members  520  may be attached to the base structure  400  by a means such as welding through each end portions (not numbered) of each protruding member. As depicted in  FIG. 12 , the symbol ‘W’ depicts welding points that may be either thickened or allowed to have a flat space between adjacent protruding members of the protruding members  520 , for easier welding during a manufacturing process. It may be evident that alternate means of attachment may be used for attaching the protruding members  520  onto the base structure  400 . 
     Further, each protruding member of the protruding members  520  is configured to hold the landscaping materials. Furthermore, each protruding member of the protruding members  520  includes a bottom portion (not numbered) configured towards the base structure  400 , a top portion (not numbered) configured away from the base structure, and an intermediate portion (not numbered) between the top portion and the bottom portion. 
     In addition, each protruding member of the protruding members  520  is configured to have a shape of one of a stud, a triangle, a square, a wave, and a hemisphere. For the purpose of the present disclosure, each protruding member is configured to have a shape of a triangle, as depicted in  FIGS. 12 and 13 , while forming an accordion type structure. However, it will be evident that the shape of each protruding member should not be considered as a limitation to the present disclosure. Also, each protruding member of the protruding members  520  has a height of about 4 cm, and a width (base) of about 2.5 cm. However, the aforementioned dimension of the protruding members  520  should not be considered as a limitation to the present disclosure. Moreover, the strip  510  may have a width ranging from about 4 mm to about 5 mm, a length of about 110,000 cm, and a thickness ranging from about 0.65 mm to about 1 mm However, the aforementioned dimension of the strip  510  should not be considered as a limitation to the present disclosure. 
     Further, as depicted in  FIG. 13 , two strips  510  of the landscape erosion control unit  40  are arranged in an overlapping manner (parallel orientation) in order to facilitate appropriate holding of landscaping materials. Specifically, the two strips  510  are shown to be arranged in a parallel orientation wherein a crest (not numbered) of a first strip  510  aligns with a corresponding trough (not numbered) of the adjacent strip  510 . 
     In addition, each protruding member of the protruding members  520  may be inclined at an angle (such as an angle of about 45 degrees) relative to the base structure  400 . Further, two adjacent protruding members of the protruding members  520  are configured in a manner such that corresponding bottom portions of the two adjacent protruding members are joined together, as depicted in  FIGS. 12 and 13 . Specifically, the corresponding bottom portions of the two adjacent protruding members are joined in a continuous manner. Also, the landscape erosion control unit  40  may further include a frame (not shown) to support the retention structures  500  and to facilitate the attachment of the retention structures  500  to the base structure  400 . 
     Further, each retention structure of the retention structures  500  may be composed of a polymeric material. Additionally, the landscape erosion control unit  40  may be fabricated in a manner wherein the base structure  400  and the retention structures  500  are configured as an integral unit. 
     In an alternate embodiment, a landscape erosion control unit  70  of the present disclosure includes a base structure  700  and a plurality of retention structures, such as a retention structure  800 , attached to the base structure  700  (as depicted in  FIGS. 15 and 16 ). The retention structure  800  is one of fixedly attached and removably attached to the base structure  700 . Further, the retention structure  800  includes more than one strips, and more specifically, a plurality of strips  810 . Each strip of the strips  810  is patterned (by bending) to form a protruding member  820  configured to extend outwardly from the base structure  700 . For the purpose of this description, the strips  810  are short and thin strips (having a length of about 1100 mm) joined to form the retention structure  800 , in such a way that each strip of the strips  810  is patterned to form the protruding member  820  (triangular structure), configured to extend outwardly from the base structure  700 . 
     The protruding member  820  is similar to the protruding members  520 , and accordingly, a description thereof is avoided herein for the sake of brevity. In addition, the protruding member  820  is configured to have a shape of a triangle, to facilitate formation of an accordion type structure for the retention structure  800 . However, it will be evident that the shape of each protruding member should not be considered as a limitation to the present disclosure. For example, a strip of the strips  810  may be patterned in a manner, such that the protruding member  820  is configured to have a shape of a hemisphere (as depicted in  FIGS. 17 and 18 ). 
     In still another aspect, the present disclosure provides a retention structure, such as the retention structures  200 ,  500 , and  800 , for retaining landscaping materials. As described above in conjunction with  FIGS. 1-18 , the retention structure includes a plurality of protruding members (such as the protruding members  220 ,  520 , and  820 ). Further and as described above, each protruding member is formed from a material by at least one of cutting, patterning and bending the material. 
     In addition, an embodiment of the retention structure (such as the retention structures  200 ) includes a strip (such as the strip  210 ) to support the plurality of protruding members thereupon such that each protruding member of the plurality of protruding members extends outwardly from the strip. Further, the strip is configured to be attached to a base structure (such as the base structure  100 ). 
     As various embodiments of the retention structure of the present disclosure are already described in conjunction with  FIGS. 1-18 , a description of the retention structure is avoided herein for the sake of brevity. 
     In yet another aspect, the present disclosure provides a method  1000  for fabricating a landscape erosion control unit, such as the landscape erosion control units  10 ,  40  and  70 , for retaining landscaping materials, as depicted in  FIG. 19 . 
     The method  1000  begins at  1010 . At  1020 , a starting material to fabricate a retention structure (such as the retention structures  200 ,  500  and  800 ) is provided. The starting material may be a firm and foamed material. A suitable example of the starting material to fabricate the retention structure includes, but is not limited to, a polymeric material, such as a plastic material (for example, polypropylene; polyethylene; and any other combination of plastic including urethane, nylon, silicon, closed-cell foam, open-cell foam, cross-linked foam, foam with skin and other suitable material). Further, the starting material may include an Ultra Violet (UV) inhibitor, such as carbon black being added as a natural UV inhibitor or any other such material capable of increasing shelf-life of the retention structure. Moreover, recycled plastic may be used as the starting material. 
     The use of a light-weight material such as a foamed plastic helps to reduce the weight of the completed roll once the material is attached to the base structure. Also, the strips fabricated from foamed materials are capable of being arranged either in rolls or configured to have dimensions (width/length) of the base structure. Accordingly, such strips are lighter than a solid form of plastic, depending on either the thickness/design of the finished strip or preferred manufacturing method. It will be evident that use of foam facilitates in providing a tighter roll during shipping. 
     In addition, the starting material used for retention structures that are required for seeding on open weave netting or used alone on the earth for the purpose of erosion control may be a degradable material to facilitate degradation of the retention structures after sprouting of the seeds and maturing of the plants. Specifically, bio-degradable materials such as wood pulp, vegetable, corn starch, and any such other dissolvable material, may be used for the purpose of the present disclosure. 
     At  1030 , the starting material is patterned to configure the retention structure (such as the retention structures  200 ,  500 , and  800 ) that includes a plurality of protruding members (such as the protruding members  220 ,  520 , and  820 ). Each protruding member of the plurality of protruding members is configured to have a predetermined dimension in order to hold the landscaping materials. Further, each protruding member includes a top portion (such as the top portion  224 ), a bottom portion (such as the bottom portion  222 ), and an intermediate portion (such as the intermediate portion  226 ) between the top portion and the bottom portion. Furthermore, two adjacent protruding members of the plurality of protruding members are configured in a manner such that corresponding bottom portions of the two adjacent protruding members are joined together. Specifically, the corresponding bottom portions of the two adjacent protruding members are joined in one of a spaced apart relation and a continuous manner. 
     The term ‘predetermined dimension’ as used hereinabove and below relates to the dimensions of each protruding member as described in conjunction with  FIGS. 1-18 . 
     Patterning of the starting material may be achieved by at least one of cutting, die cutting, stamping, compressing, bending, bonding, thermo molding, laminating, injection molding and open casting. Further, the starting material may be provided in a form being at least one of a sheet, a flat piece, an extruded piece, a pre- extruded piece of the polymeric material, a laminated fabric, and one or more strips. The method  1000  ends at  1040  after patterning the starting material. 
     In one embodiment of the method  1000  for fabricating the retention structures  200  of  FIG. 5 , a starting material such as a material  12  (for example, a foam material) may be provided at step  1020 , as depicted in  FIG. 20 . The material  12  may be either a flat piece or an extruded piece. For the purpose of this description, the material  12  is a flat piece. Thereafter, the material  12  may be patterned by cutting to form an intermediate structure  14 , as depicted in  FIG. 21 . Further, triangular shapes that form the protruding members  220  may be cut from a protruding portion  16  of the intermediate structure  14 , and a base that forms the strip  210  may be cut along the line X-X′ of the intermediate structure  14 . Furthermore, the desired thickness and height of the protruding members  220  is obtained by patterning the aforementioned cut portions using one or more techniques such as a rotary die cut, stamping, and compressing, to form the triangular/saw tooth pattern as depicted in  FIG. 5 . 
     Alternatively, the material  12  (foam material) may be patterned in the form as depicted by a structure  18  (intermediate structure) in  FIG. 22 . Specifically,  FIG. 22  depicts existing foam cut widths along lines Y-Y′ and Z-Z′ to form the triangular/saw tooth pattern as depicted in  FIGS. 8 and 9 . 
     Similarly, various other starting materials (as described above) may be patterned as intermediate structures  20 ,  22 ,  24 ,  26 ,  28 ,  30 , and  32 , as depicted in  FIGS. 23-29 , in order to form the plurality of protruding members having different shapes (such as shape of a triangle, a hemisphere and the like), for the purpose of this description. More specifically, the starting materials as used may be extruded materials that may be shaped in many ways, such as either a solid or notched/die cut triangle; either a solid or die cut stud/wave; either a solid or notched hemisphere/round/square; and either a hollow or a solid tube, and the like, as depicted in  FIGS. 23-29 . The purpose of the aforementioned designs is to minimize the erosion of the landscaping materials from sliding downhill or to minimize erosion from wind, water, and foot traffic. 
     Additionally, one strip/piece of either an extruded or a flat sheet material may be cut into two identical pieces to eliminate waste of material. Accordingly, a starting material may be patterned to form multiple strips, such as the strip  210 , and/or multiple retention structures, such as the retention structures  220 . Further, die cutting into a predetermined pattern may be achieved with a material such as a flat sheet of ridged, foamed material; and a semi flexible polypropylene/a polyethylene material that may be thermoformed with or without vacuum, or formed with a line and seam welder and bending machine, to create an angle either to the strips or an angle at the base of the plurality of protruding members in order to facilitate the plurality of protruding members to incline at an angle. Providing the plurality of protruding members at an angle relative to at least one of the base structure and the strip assists in trapping the landscape materials effectively. Further, plurality of protruding members acts as a dam structure when each protruding member of the plurality of protruding members is configured as vertical structure (straight-up without any inclination). 
     For the purpose of this description, the method  1000  further includes attaching the retention structure to a base structure, such as the base structures  100 ,  400  and  700 . Specifically, the plurality of protruding members with the strips may be attached to the base structure during manufacturing as a unit. Accordingly, the strips may be fixedly attached to the base structure. Alternatively, the fabricated strips of the plurality of protruding members may be removably attached to the base structure with stakes at the time of application. Further, the strips may also be provided with an attachment means, such as an adhesive backing with a pull strip (for removable/detachable attachment), that assists in the application of the retention structures and the base structure to the slope. Further, use of the aforementioned attachment reduces the number of stakes required for attachment and the number of stake holes required in the base structure. Furthermore, the use of the aforementioned attachment facilitates greater flexibility in the cost management and greater flexibility of horizontal/vertical spacing of strips. 
     Based on the aforementioned, the strips  210 ,  510  and  810  may be attached to the respective base structures  100 ,  400  and  700 , either manually or by a machine. For example, numerous examples of methods of attachment include, but are not limited to, manual stakes (as described above), seam welding, laser joining, mask laser joining, UV ray, and adhesive. Further, spin, ultrasonic friction methods of welding, heat clamping, blister sealing, hot air welding or any other similar process may be used to fuse plastics. Heat welding includes many techniques, such as jaw bars for heat welding and zebra bands that have hot and cold zones for intermittent seals. Additionally, cut and seal machines may be used for both bending plastic and cutting the waste at the same time. The cut and seal machines may also come in double band heating wires. Furthermore, line welding, either open-welding or enclosed, may be used for the purpose of this description. Moreover, longitudinal seam welding may be used for double/multilayer fabric joining. Also, any method of plastic fusion may be employed without departing from the scope of the present disclosure. 
     In another embodiment of the method  1000  for fabricating the retention structures  200  of  FIG. 3 , a starting material (such as a plastic) may be allowed to undergo extrusion. Further, the extruded/pre-extruded material may be provided at  1020 , and may then be subjected to patterning at  1030  by die cutting while retaining space between adjacent protruding members of the protruding members  220 . Accordingly, the method  1000  facilitates lodging of the landscaping materials between the protruding members  220 , while diminishing a possible visible ridge when the landscaping material degrades. Further, either the starting material or the retention structures  200  may be coated with either a black color or any dark landscape color to help to prevent a visible ridge. It will be evident that cutting sections out of an extruded piece/pipe in any shape helps to mask the underlying structure but is not mandatory to the function or intent of a retention structure, such as the retention structure  200 . Accordingly, manufacturing costs and tooling may be considered and may alter the choice of design for blocking the landscaping materials. 
     In yet another embodiment of the method  1000  for fabricating retention structures  500  of  FIGS. 12-14 , a starting material in the form of a long thin strip (straight line pattern), to form the strip  510 , of an extruded sheet of a plastic material may be provided at  1020 . At  1030 , the long thin strip may be patterned by cutting and pre-bending in a triangular/accordion pattern, as depicted in  FIGS. 12 and 13 , to form the strip  510  and the protruding members  520 . As depicted in  FIGS. 12 and 13 , the protruding members  520  are hollow from therewithin, thereby facilitating appropriate lodging of the landscaping materials/water to flow through the open triangular protruding members  520 . The open faced triangular protruding members  520  allow for minimal use of the plastic material, as readily available materials such as extruded flat sheets of High Density Polyethylene (HDPE) and High Density Polypropylene (HDPP) may be used as the starting material. Accordingly, the patterning of the starting material simply requires cutting thereof in a straight line and then bending/crimping of the straight line, thereby lowering manufacturing start up tooling costs as compared to other techniques (such as injection molding and so forth). 
     Additionally and as described in conjunction with  FIGS. 15-18 , an open pattern without the accordion bent/crimp may be achieved by attaching multiple thin strips (such as the strips  810 ) of a plastic material every 1-4 inches across the base structure  700  using any attachment/bonding method as mentioned above. The thinness of the strips  810  of the plastic material assists to mask respective top portions (not numbered) of the strips  810  between applications of new landscaping materials. 
     Also, when the strips  510  and  810  utilize hollow triangular protruding members  520 /hemispherical protruding member  820  that are attached to the respective base structures  400  and  700  at the time of manufacturing, an additional step of cutting the respective top portions (not numbered) of the triangular protruding members  520 /hemispherical protruding member  820  may be employed to prevent rake entanglement during application of the landscaping materials. 
     In yet another embodiment of the method  1000 , the starting material may be provided as a sheet of plastic that may be thermo molded into the plurality of protruding members (either thick or thin) along with respective strips (such as the protruding members  220  with the strip  210 ). Specifically, a large sheet of plastic/plastic foam sheeting material may be subjected to thermo molding, and subsequently, the waste material from thermo molded structures may be removed therefrom by cutting. Accordingly, the retention structure as fabricated using the method  1000  may include a strip to support the plurality of protruding members, such that the each protruding member of the plurality of protruding members extends outwardly from the strip. Therefore, the strip and the plurality of protruding members may be formed as an integral unit for fabricating a landscape erosion control unit (such as the landscape erosion control unit  10 ). 
     In another embodiment of the method  1000 , the starting material may be a full roll of a landscape fabric (polymeric material) that may be patterned by thermo molding/thermo forming and/or heated, and subsequently, stretched into the landscape erosion control unit having the plurality of protruding members. Thereafter, the thermo formed sheet may be welded to another landscape/base fabric in order to form a double layered unit. Accordingly, the method  1000  may also include patterning the starting material to configure the base structure adapted to carry the plurality of protruding members thereupon for fabricating a landscape erosion control unit (such as the landscape erosion control units  10  and  40 ). 
     In still another embodiment of the method  1000 , the starting material may be a landscape fabric that may be laminated die cut to form the plurality of protruding members with/without strips, and attached to another landscape fabric. Alternatively, the laminated fabric may be die cut into the plurality of the protruding members that may then be thermo molded to incline at an angle relative to the base structure in order to form pockets to trap the landscaping materials. 
     In another embodiment of the method  1000 , the starting material may be a plastic material that may be either injection molded or open-casted onto the base structure to form the plurality of protruding members with/without the strips, to fabricate a landscape erosion control unit (such as the landscape erosion control units  10 ,  40  and  70 ). 
     For the purpose of the above description, suitable examples of the polymeric material to be used for the base structure (such as the base structures  100 ,  400  and  700 ) include, but are not limited to, a polymeric material, such as a commercial grade 3-4 ounce non-woven polypropylene, and other open mesh and lighter-weight weed blocking mesh materials. Further, the base structure may have a color, such as black, brown, and grey to blend with the earth and/or landscaping materials. An open weave mat base structure (such as the base structure  100 ) may also be used for the purpose of this description. It will be evident that the open web or netting allows for slope seeding to prevent ground erosion of soil. Plurality of protruding members on an open web (mat) is capable of holding the landscaping materials that are used to temporarily cover/protect the seedlings during germination and initial new growth. Once the ground cover is secure, the base structure (matting) and the plurality of retention structures disappear into the growth, thereby adding an additional layer of erosion protection. 
     The present disclosure provides an effective and efficient landscape erosion control unit (such as the landscape erosion control units  10 ,  40 , and  70 ) that includes blocking members, i.e., protruding members (such as the protruding members  220 ,  520 , and  820 ) that minimize the movement of mulch and other landscaping materials placed on a fabric, i.e., base structure (such as the base structures  100 ,  400 , and  700 ). The structural and functional configuration of the landscape erosion control unit of the present disclosure on hillsides offers a decrease in manufacturing tooling and production, and installation costs. Further, various forms (embodiments described above) of the landscape erosion control unit may be provided considering different degrees/steepness of the sloped site onto which the landscape erosion control unit may be employed. Further, strips (such as the strip  210 ,  510 , and  810 ) of the landscape erosion control unit may be closely positioned at the steepest portion of the sloped site, and may be positioned in a spaced-apart manner in rows at the flattening portion of the sloped site. Additionally, the landscape erosion control unit is a light-weight means for erosion control and is easy to roll, ship, store, and/or install over the sloped site. Moreover, the landscape erosion control unit of the present disclosure may also be used for forest reclamation to stabilize the slopes before rains wash the slopes away. 
     The foregoing descriptions of specific embodiments of the present disclosure have been presented for purposes of illustration and description. They are not intended to be exhaustive or to limit the present disclosure to the precise forms disclosed, and obviously many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the present disclosure and its practical application, to thereby enable others skilled in the art to best utilize the present disclosure and various embodiments with various modifications as are suited to the particular use contemplated. It is understood that various omission and substitutions of equivalents are contemplated as circumstance may suggest or render expedient, but such are intended to cover the application or implementation without departing from the spirit or scope of the claims of the present disclosure.