Patent Publication Number: US-2019168921-A1

Title: Double-stracture bag

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     This invention has been made by the members of MIMURA Seminar, College of Law, Nihon, Univ. as a team. The present invention relates to a bag, in particular, to a double structure bag having an inner bag and an outer bag, which make it harder to leak the smell of contents therein. 
     2. Description of the Invention 
     When a product such as hamburgers or fries is purchased to go at a leading fast food restaurant, it was stored in a paper bag  300 , which is illustrated in  FIG. 4 . Depending the products, some products have a strong smell, and the paper bag  300  often leaks the smell because of it&#39;s a thin structure. When it carried in the public transportation, the leakage of the smell may feel uncomfortable to the people around. In general, if it is focused only on the prevention for leaking smell of order, it is possible to resolve such a problem by using a bag having zipper at the location of its opening. 
     However, by using the bag with a zipper, there is another problem that it will not be easy to put the food in and out because of its zipper function. For these reasons, in order to put the food in to and out from the bag easily, the bag  300  is closed b folding itself at where the opening is located. 
     However, the closure of the opening be released by a small impact, and the opening of the bag  300  is re-opened easily and unexpectedly. Therefore, it is deficient as to the function for closing the opening of the bag. The present invention is to enable to solve the above problems. 
     SUMMARY OF THE INVENTION 
     An objective of the present invention is to resolve the above described problem and to provide a double-structure bag having an outer bag and an inner bag. The objective is achieved by a double-structure bag including an inner bag including a second food storage opening, wherein the inner bag includes a first and second bent portions located in an area adjacent to the second food storage opening, and wherein the first bent portion includes first openings at both side, and the second bent portion includes second openings at both side; an outer bag in which the inner bag is stored, having a first food storage opening, wherein the outer bag includes a tunnel, which having third openings at its both ends; and two elongated zipping members, each of which is placed in one of the first and second bent portions, respectively, wherein both ends of each elongated zipping member are placed outside the outer bag by passing through the tunnel and by coming out from the third openings, respectively, whereby the second food storage opening is closed by pulling the elongated zipping members from the side to side, and wherein the elongated zipping members are tied together after area where the first food storage opening is formed is folded. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The invention will be more particularly described with reference to the accompanying drawings, in which: 
         FIG. 1  shows a perspective view of a double structure bag, according to the first preferred embodiments of the invention, 
         FIG. 2  shows a perspective view of an inner bag of the double structure bag illustrated in  FIG. 1 , and 
         FIG. 3  shows a perspective view of a double structure bag, according to the second preferred embodiments of the invention, and 
         FIG. 4  shows a paper bag of the related art. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     The First Embodiment 
     The first preferred embodiment of the invention as to a writing equipment with scale attached is explained together with drawings as follows. In each drawing, the same reference numbers designate the same or similar components through all embodiments. 
       FIG. 1  shows a perspective view of a double structure bag  100 . The double structure bag  100  includes an outer bag  10 , an inner bag  20  and two elongated zipping members  30   a  and  30   b . The outer bag  10  includes a first food storage openings  11  located on an upper side for putting foods, such as hamburgers and French Fries, in and out of, and a tunnel  1 , which is formed along one side of the first opening  11 . As shown in  FIG. 2 , the inner bag  20 , which is located in the outer bag  10 , includes a second food storage openings  21 , a first bent portion  2   a  having first openings  22   a  and  22   b  at its ends and a second bent portion  2   b  having second openings  22   c  and  22   d  at its both side. According to the first embodiment, while the tunnel  1  includes two third openings  12   a ,  12   b , the outer bag  10  itself includes two fourth openings  40   a ,  40   b  on the side surface thereof of the second embodiment, which is described below. 
     The double structure bag is used as follows. First, in a first embodiment, the one of the elongated zipping members  30   a  is placed in the first bent portion  2   a  by passing from the first opening  22   a  and to another first openings  22   b , and then, the elongated zipping member  30   a  is placed in the second bent portion  2   b  by passing from the second opening  22   d  and to another second opening  22   c . Another elongated zipping member  30   b  is placed in the second bent portion  2   b  passing in the opposite pathway, namely, by passing from the second opening  22   d  and to another second opening  22   c , and then, the elongated zipping member  30   b  is placed in the first bent portion  2   a  by passing from the first opening  22   a  and to another first opening  22   b.    
     Next, the both ends of the elongated zipping member  30   a  are placed outside of double structure bag  100  by passing through the tunnel  1  and by coming out from the third openings  12   a ,  12   b , respectively. As well as the elongated zipping member  30   a , the both ends of the elongated zipping member  30   b  are placed outside the double structure bag  100  by passing through the tunnel  1  and by coming out from the third openings  12   a ,  12   b , respectively. Then, the area, where tunnel  1  is formed, is folded inwardly one or several times so that the first food storage opening  11  is closed lightly. Finally, the elongated zipping members  30   a  and  30   b  encompasses the outside of the folded first food storage opening  11 , and the elongated zipping members  30   a  and  30   b  are tied together on the surface which is opposite to folded one. 
     Then, after the content, such as foods, is placed in the inner bag  20 , the second food storage openings  21  is closed by pulling both ends of the elongated zipping members  30   a  and  30   b . According to the structure described above, since the zipping members  30   a  and  30   b  are tied on the location as described above, the zipping members  30   a  and  30   b  can maintain the state against the force, which returns the folded area to the pre-folded location, and it can also maintain the folded state even the impact is applied to the double structure bag  100  from the outside. In addition, the prevention of the leakage of the smell the inner bag  20  can be expected. 
     The Second Embodiment 
     As well as the first embodiment, a double structure bag  200  of the second embodiment includes an outer bag  10 , an inner bag  20  and two elongated zipping members  30   a  and  30   b . As shown in  FIG. 3 , the outer bag  10  of the second embodiment includes the fourth openings  40   a ,  40   b , each of which is formed on its side surface, respectively, as described above. 
     In the second embodiment, as well as the first embodiment, the zipping member  30   a  is placed in the second tunnel  2   a  by passing from the first opening  22   a  and to another first opening  22   b , and then, the zipping members  30   a  is placed in the third tunnel  2   b  by passing from the second opening  22   d  and to another second opening  22   c . Another zipping member  30   b  is placed in the third tunnel  2   b  by passing in the opposite pathway, namely, by passing from the second opening  22   d  and to another second opening  22   c , and then, the zipping member  30   b  is placed in the second tunnel  2   a  by passing from the first opening  22   a  and to another first opening  22   b . Then, after the content, such as food, is placed in the inner bag  20 , the second food storage opening  21  is closed by pulling both ends of the zipping members  30   a  and  30   b.    
     Then, the inner bag  20  is placed in the outer bag  10 . Next, each of the elongated zipping members  30   a ,  30   b  passes through one of the fourth openings  40   a ,  40   b , respectively, and area where the opening  11  is formed is bent and closed. Thereafter, by tying the elongated zipping members  30   a ,  30   b , it is expected that the contents can hardly jump out from the inner bag  20 . 
     In a first and a second embodiments, while the material of the outer bag  10  is paper, the material of the inner bag  20  is primarily aluminum or polyethylene. However, it is not necessary to limited to the above mentioned material. Further, paper, cotton, metal, vinyl and synthetic resin can be used for them. Moreover, the elongated zipping members  30   a ,  30   b  may be made of metal primarily, but other material such as paper, cotton, wire, polyethylene and synthetic resin can be used for them. 
     According to a first embodiment, since the plurality of openings, such as the first openings  22   a ,  22   b  and the second openings  22   c ,  22   d , are formed in the inner bag  20 , the durability may be is less than the other parts. Therefore, the area in which the first openings  22   a ,  22   b  and the second openings  22   c ,  22   d  are formed may be formed slightly thick. Similarly, according to a second embodiment, the first area in which the fourth openings  40   a  and  40   b  are formed slightly thicker than other area for the same reason. 
     While the invention has been described with reference to illustrative embodiments, this description is not intended to be construed in a limiting sense. Thus, shapes, size and physical relationship of each component are roughly illustrated so the scope of the invention should not be construed to be limited to them. Further, to clarify the components of the invention, hatching is partially omitted in the cross-sectional views. Moreover, the numerical description in the embodiment described above is one of the preferred examples in the preferred embodiment so that the scope of the invention should not be construed to limit to them. 
     Various other modifications of the illustrated embodiment will be apparent to those skilled in the art on reference to this description. Therefore, the appended claims are intended to cover any such modifications or embodiments as fall within the true scone of the invention.