Source: https://patents.google.com/patent/US9550617
Timestamp: 2018-03-19 14:57:21
Document Index: 596880311

Matched Legal Cases: ['art 21', 'art 221', 'art 222', 'art 221', 'art 21', 'art 21', 'art 21', 'art 21', 'arts 221', 'art 21', 'art 21', 'art 21', 'art 21', 'art 21', 'arts 21', 'art 21', 'art 21', 'art 21', 'art 21', 'art 21', 'art 21', 'art 211', 'art 211', 'art 21', 'art 211', 'art 21', 'art 21', 'art 21', 'art 21', 'art 211', 'art 21', 'art 21', 'art 211', 'art 21', 'art 211', 'arts 21', 'arts 21', 'arts 21', 'art.\n9', 'art.\n19', 'art.\n35', 'Application No. 0528721', 'Application No. 2002', 'Application No. 2004', 'Application No. 16165414', 'Application No. 200580042112']

US9550617B2 - Zipper and zipper-equipped bag - Google Patents
Zipper and zipper-equipped bag
US9550617B2
US9550617B2 US14836439 US201514836439A US9550617B2 US 9550617 B2 US9550617 B2 US 9550617B2 US 14836439 US14836439 US 14836439 US 201514836439 A US201514836439 A US 201514836439A US 9550617 B2 US9550617 B2 US 9550617B2
US14836439
US20150375902A1 (en )
Patent Document 1: Japanese Patent Application Laid-Open No. 2004-244027
Also, in the case of the zipper of Patent Document 1, it is necessary to prevent the easily cuttable resin layer from being heated by the heat from a heat seal bar when the zipper is bound with a base film used as a bag raw material by sealing such that the easily cuttable resin layer is prevented from adhering to the base film (for example, Patent Document 1, Paragraph No. [0018]). This zipper has the problem that, for example, not only it is necessary to prepare a heat seal bar having a predetermined seal surface but also strict alignment is required when the zipper is bound with the base film by sealing, requiring troublesome time and labor for the binding of the zipper with the base film. This zipper has therefore a large problem which must be improved to produce a zipper-equipped bag in an efficient manner.
FIG. 17 is a section view showing a part corresponding to the section A-A of FIG. 1 in the condition of a zipper-equipped bag after a top seal is provided to a modification of a zipper-equipped bag of a first embodiment according to the present invention.
The male member 2 a is provided with a base part 21 a formed continuously like a tape. A male projection 22 a constituted of a head part 221 a and a connecting part 222 a connecting the head part 221 a with the base part 21 a is provided on one surface of the base part 21 a and these parts are formed to be integrated continuously. Then, the other surface of the base part 21 a is bound with the base film 10 a by heat sealing. Similarly, the female member 2 b is provided with a base part 21 b formed continuously like a tape. A female projection 22 b constituted of a pair of hook parts 221 b and 221 b is provided on one surface of the base part 21 b and these parts are formed to be integrated continuously. Then, the other surface of the base part 21 b is bound with the base film 10 b by heat sealing.
The male member 2 a and the female member 2 b may be formed, for example, by extrusion molding of a thermoplastic resin and the like. As the thermoplastic resin such as, for example, a polyolefin type resin such as polypropylene, low-density polyethylene (LDPE) and linear low-density polyethylene (LLDPE), and an ethylene/methacrylic acid copolymer may be used. The male member 2 a and the female member 2 b may have a multilayer structure using plural resins in consideration of the interlocking ability between the male member 2 a and the female member 2 b, the sealing strength and heat sealing characteristics of the male member 2 a and the female member 2 b with the base films 10 a and 10 b.
Also, the same thermoplastic resin made into a film form may be used for the base films 10 a and 10 b in consideration of the sealing strength and heat sealing characteristics with the zipper 2 (male member 2 a and female member 2 b). The base films 10 a and 10 b may have a multilayer structure to allow these films to exhibit various functions as the bag. In this case, for example, the inside layer to be the inside surface of the bag 1 is formed of the same thermoplastic resin as above as the heat seal layer for the zipper 2. Also, biaxially oriented nylon, biaxially oriented polyethylene terephthalate or biaxially oriented polypropylene may be laminated together with the heat seal layer as the outside surface of the bag 1, and a barrier layer made of an aluminum foil or an ethylene/vinyl alcohol copolymer film may be laminated as an intermediate layer.
Here, the peeling strength between the tearing guide strip 23 and the male member 2 a means the largest load found when the both put in a bound state are cut into a test piece having a width of 15 mm and the test piece is subjected to a tensile tester carried out at a measuring atmospheric temperature of 23° C. at a tensile rate of 200 mm/min to peel the both from each other along the direction perpendicular to the direction of the width of the test piece.
On the other hand, when the tensile elastic modulus of the tearing guide strip 23 is less than the above range, the tearing guide strip 23 has only insufficient rigidity, causing a hindrance to the peeling from the male member 2 a or the tearing of the base film 10 a.
Moreover, such a disorder is caused that the tearing guide strip 23 is broken and the bag 1 cannot be unsealed resultantly.
Also, according to such as the material, or the degree of orientation of the base film 10 a, the base film 10 a is not torn along the part where it is bound with the tearing guide strip 23 but the direction of tearing is toward to the part where it is bound with the male member 2 a, and in this case, there is the case where the male member 2 a is torn together with the base film 10 a.
In order to avoid such an event, a convex streak 24 is disposed along the longitudinal direction of the male member 2 a at a part close to the tearing guide strip 23 on the base part 21 a of the male member 2 a and the part is thickened than other part in the example illustrated. Thereby, even if the direction of tearing the base film 10 a is toward to the part where it is bound with the male member 2 a and a part of the male member 2 a is torn, it is so devised that this convex streak 24 prevents the male member 2 a from being further torn and also corrects the tearing direction of the base film 10 a to the normal direction, that is, the direction along the part bound with the tearing guide strip 23.
In the example illustrated, half-cut treatment has been carried out in such a manner as to form a lug 12 penetrating through a part where the side seal 11 on which the tearing guide strip 23 is positioned is formed. It is so devised that at this time, the base film 10 b constituting a part of the lug 12 is cut off from the other part of the base film 10 b and the base film 10 a constituting a part of the lug 12 is cut off from a part other than the part torn when the base film 10 a is unsealed, to form the lug 12 in the state where the tearing guide strip 23 is sandwiched between the separated base films 10 a and 10 b.
When the lug 12 is constituted in this manner, the lug 12 is, as is illustrated, picked up to pull the tearing guide strip 23, whereby the base film 10 a is torn by the tearing guide strip 23 to form the unsealing mouth 14.
FIG. 4(a) is an explanatory view showing the condition that the base film 10 a is torn by the tearing guide strip 23 and FIG. 4(b) is an enlarged view of a major part of the tearing guide strip 23 when it is pulled. Also, in the example illustrated, a part of the base part 21 a of the male member 2 a and base part 21 b of the female member 2 b is cut off and put into the state sandwiched between the base films 10 a and 10 b under the lug 12. The cut parts of the base parts 21 a and 21 b have no influence on the resealing function of the lug 12.
At this time, the tearing guide strip 23 is integrated with the guide member 25 in the same binding condition as in the case binding to the base part 21 a of the male member 2 a, specifically, in the condition that the peeling strength is preferably 15 N/15 mm or less so as to enable interfacial peeling at the binding interface. Also, in the case where the tearing guide strip 23 is provided with the heat seal layer 232, it is so devised that the same gap 233 is formed between the heat seal layer 232 and the guide member 25. Also, the guide member 25 may be formed and integrated with the male member 2 a simultaneously when the male member 2 a is molded in such a manner as to carry out co-extrusion together with the tearing guide strip 23 by using the same resin material that is used for the male member 2 a.
The resin material used for the guide member 25 may be different from that for the male member 2 a. No particular limitation is imposed on the type of resin material used for the guide member 25 insofar as the guide member 25 can be bound with the tearing guide strip 23 in such a manner as not to hinder the tearing guide strip 23 from tearing the base film 10 a in almost parallel to the zipper 2.
FIG. 5 is a sectional view showing the outline of the part corresponding to the section A-A in FIG. 1 in the state after the top seal 13 is provided in the same manner as in the case of FIG. 2 in such an example. FIG. 6 shows the state of the bag 1 unsealed by tearing the part bound with the tearing guide strip 23 of the base film 10 a.
Also, in the above embodiment, the tearing guide strip 23 is disposed on the male member 2 a side. However, the tearing guide strip 23 may be disposed on the female member 2 b side. The tearing guide strip 23 may be disposed on both the male member 2 a and the female member 2 b, so that the bag 1 can be unsealed from either the surface side (base film 10 a side) or the backside (base film 10 b side). Moreover, the positional relationship between the male member 2 a and the female member 2 b may be reversed to that of the example shown in FIG. 2. In this case, the tearing guide strip 23 is disposed on the female member 2 b side.
Specifically, the male member 2 a is bound with the base film 10 a by heat sealing and the edge of the surface of the base part 21 b of the extended female member 2 b on the side provided with the female projection 22 b may be fitted by heat sealing to the base film 10 a at a corresponding position closer to the upper edge side of the bag 1 than the position of the male member 2 a.
Such a fitting means enables the content to be filled in the bag 1 from the between the female member 2 b and the base film 10 b. Therefore, when the content is filled in the bag 1, it is unnecessary to release the interlocking of the zipper 2 and it is also possible to avoid the adhesion of the content to the interlocking part of the zipper 2. Such a fitting means is particularly preferable in a standing bag as shown in FIG. 1 which is limited in the port for filling the content.
Even in the case of adopting such an unsealing means, the tearing guide strip 23 may be provided on one of the male member and the female member. Also, the notch 12 may be disposed on only one of the right and left side of the side edge of the bag 1 if it is situated on the same line as the peeling part of the tearing guide strip 23.
Also, in the zipper 2 of this embodiment in the condition that the male member 2 a and the female member 2 b are interlocked with each other and fitted to the bag 1, the base part 21 b of the female member 2 b in the width direction of the base part 21 b is extended so as to be projected to the side where the top seal 13 is to be provided, such that the length of the base part 21 in the width direction is larger than that of the base part 21 a of the male member 2 a as shown in FIG. 12. Then, on the surface of the extended part 211 on the side on which the female projection 22 b is formed, a tearing guide strip 23 peelable from the female member 2 b is integrated along the longitudinal direction of the female member 2 b.
Here, in the example illustrated, the tearing guide strip 23 is disposed apart from the edge of the extended part 211 side of the base part 21 b of the female member 2 b to secure its heat seal surface with the base film 10 a along the edge of the extended part 211 side of the base part 21 b of the female member 2 b.
When the tearing guide strip 23 is formed on the base part 21 b of the female member 2 b, the peeling strength between the tearing guide strip 23 and the base part 21 b is designed to be preferably 15 N/15 mm or less. When the peeling strength exceeds this value, there is a fear that the force required to separate the tearing guide strip 23 from the base part 21 b by peeling is increased and it is therefore difficult to obtain a good unsealing feel. Moreover, such a disorder arises that the extended part 211 is also torn.
Also, although the peeling of the tearing guide strip 23 may be any of interfacial peeling and cohesive peeling, the former is preferable. The interfacial peeling can prevent peeling scum from being produced on the peeled surface after the tearing guide strip 23 is separated from the base part 21 b.
Here, the peeling strength between the tearing guide strip 23 and the base part 21 b means the largest load found when the both put in a bound state are cut into a test piece having a width of 15 mm and the test piece is subjected to a tensile tester carried out at a measuring atmospheric temperature of 23° C. at a tensile rate of 200 mm/min to peel the both from each other along the direction perpendicular to the direction of the width of the test piece.
In this embodiment, the male member 2 a and the female member 2 b may be formed, for example, by extrusion molding of a thermoplastic resin. As the thermoplastic resin, for example, a polyolefin type resin such as polypropylene, low-density polyethylene (LDPE) and linear low-density polyethylene (LLDPE) and an ethylene/methacrylic acid copolymer may be used. The zipper 2 may have a multilayer structure using plural resins in consideration of the interlocking ability between the male member 2 a and the female member 2 b, the sealing strength and heat sealing characteristics of the zipper 2 with the base films 10 a and 10 b.
Also, the same thermoplastic resin made into a film form may be used for the base films 10 a and 10 b in consideration of the sealing strength with the zipper 2 (male member 2 a and female member 2 b) and heat sealing characteristics. The base films 10 a and 10 b may have a multilayer structure to allow these films to exhibit various functions as the bag. In this case, for example, the inside layer to be the inside surface of the bag 1 is formed of the same thermoplastic resin as above as the heat seal layer for the zipper 2. Also, biaxially oriented nylon, biaxially oriented polyethylene terephthalate or biaxially oriented polypropylene may be laminated as the outside surface of the bag 1, and a barrier layer made of an aluminum foil or an ethylene/vinyl alcohol copolymer film may be laminated as an intermediate layer.
As mentioned above, the tearing guide strip 23 is integrated with the extended part 211 of the base part 21 b of the female member 2 b along the longitudinal direction of the extended part 211 such that it is separated from the female member 2 b by peeling. Therefore, the bag 1 is decreased in resistant feel in unsealing and the tearing direction of the base film 10 a can be guided linearly with a fixed orientation along the longitudinal direction of the zipper 2 without being disturbed by the male member 2 a.
Therefore, the bag 1 is easily unsealed and the unsealing mouth 14 formed after unsealed is formed in a well shape-reproducible manner and the bag 1 obtained after unsealed is not resultantly inconvenient in use.
In the example illustrated, half-cut treatment has been carried out in such a manner as to form a lug 12 penetrating through a part where the side seal 11 on which the tearing guide strip 23 is positioned is formed. It is so devised that at this time, the base film 10 b forming a part of the lug 12 is cut off from the other part of the base film 10 b and the base film 10 a forming a part of the lug 12 is cut off from a part other than the part torn when the base film 10 a is unsealed, to form the lug 12 in the state where the tearing guide strip 23 is sandwiched between the separated base films 10 a and 10 b.
According to this embodiment, as mentioned above, the tearing guide strip 23 is integrated with one of the male member 2 a and the female member 2 b such that it is separated from the zipper 2 by peeling. Therefore, a resistant feel is reduced when the bag raw material on the unsealing side against the zipper 2 is torn to unseal the bag 1. Also, since the part where the tearing guide 23 is disposed is made to project toward the side closer to the unsealing side of the bag 1 than the other of the male member 2 a and the female member 2 b, the tearing guide strip 23 works so as to guide the direction of tearing with fixed orientation such that the bag raw material is linearly torn along the longitudinal direction of the zipper 2 without being hindered by the other of the male member 2 a and female member 2 b.
Then, the present invention will be explained in more detail by way of specific examples.
A low-density polyethylene (melting point: 110° C.) having a density of 926 kg/m3 and a MFR of 1.5 g/10 min was melt-extruded to extrusion-mold a male member. At the same time, using random polypropylene (melting point 134° C.) having a density of 900 kg/m3 and a MFR of 7.0 g/10 min was used as the base material and metallocene type low-density polyethylene having a density of 900 kg/m3 and a MFR of 4.0 g/10 min was used as heat seal layer, these raw materials were extrusion-supplied to one end in the width direction of the male member to integrate a tearing guide strip with the male member simultaneously when the male member is molded, thereby obtaining the male member provided with the tearing guide strip. At this time, the heat seal layer of the tearing guide strip was formed 0.6 mm apart from the base part of the male member in such a manner as to form a gap.
A zipper-equipped bag as shown in FIGS. 1 and 2 was obtained in the same manner as in Example 1 except that only the male member was provided with the tearing guide strip and the means shown in FIG. 4 was used as the unsealing means.
Tearing Cutting Overall
resistance scum evaluation
Example 1 ◯ ◯ ◯
Comparative Example 1 ◯ X X
◯: The bag was easily unsealed without any resistant feel and was unsealed with a good feel.
X: A resistant feel was felt and the bag was unsealed with a poor feel.
(2) Cutting scum
◯: No cutting scum was observed.
X: Cutting scum was observed.
Although the invention has been described in its preferred embodiment, the present invention is not limited to the above first and second embodiments and it should be understood that various changes and modifications may be made within the scope of present invention insofar as the tearing guide strip 23 is integrated with at least one of the base parts 21 a and 21 b of the male member 2 a and female member 2 b and can be separated from the base parts 21 a or 21 b of the male member 2 a or female member 2 b.
Then, the bag 1 equipped with the zipper 2 like this can be easily unsealed by pulling the tearing guide strip 23 to tear the bag raw material. Also, the unsealing ability of the bag can be improved because the force required to unseal the bag can be reduced to the utmost by adjusting the binding state of the tearing guide strip 23 with the base parts 21 a and 21 b of the male member 2 a and female member 2 b.
Also, in the above first embodiment and second embodiment, the zipper 2 is bound with the base films 10 a and 10 b as the bag raw material by heat sealing when the zipper 2 is fitted to the bag 1. However, an adhesive may be applied to the binding interface between the zipper 2 and the bag raw material of the tearing guide strip 23 to bind the zipper 2 with the bag raw material. If it is so devised that the zipper 2 is bound with the bag raw material by using an adhesive, even paper having no heat sealing ability may be used as the bag raw material.
1. A zipper equipped bag comprising:
a zipper provided with a male projection and a female projection that are interlockable with each other and the zipper being fitted to the bag and enabling said bag to be resealed and unsealed,
wherein the bag comprises at least one base film and wherein the bag comprises at least two inner surfaces,
the zipper has a base part that is bound with only one inner surface of the at least two inner surfaces of the bag,
a tearing guide strip is provided along the longitudinal direction of the base part,
wherein the base part includes a thickened part which makes up less than all of the base part and is provided along the tearing guide strip,
wherein the base part including the thickened part and the tearing guide strip are formed as one integrated molded article
wherein the thickened part and the base part are made by a same resin material, and
wherein the resin forming the tearing guide strip and the resin used for the base part are different.
2. The zipper equipped bag according to claim 1, wherein the bag has an unsealed part that is provided at least one peripheral edge of the bag and is suitable as an opening for filling the bag with contents.
3. The zipper equipped bag of claim 2 wherein the tearing guide strip is located between the unsealed part and the male and female projections.
4. The zipper equipped bag according to claim 1, wherein a lug is provided in a part where a side seal on which the tearing guide strip is positioned is formed.
5. The zipper equipped bag according to claim 4, wherein the bag comprises at least two films and wherein the lug is formed of a part of the tearing guide strip and two films that are in the state where a part of the tearing guide strip is sandwiched,
the lug is capable of being cut from one of the two films by picking up and pulling the tearing guide strip, and
the other film is capable of being torn along the tearing guide strip.
6. The zipper equipped bag of claim 1, further comprising a second base part that has an extended part such that when the male member and the female member are in an interlocked position, the second base part extends laterally in a width direction beyond the end of said base part containing said tearing guide strip.
7. The zipper equipped bag of claim 6 wherein both the base part and the second base part are bound to the same inner surface of the bag, and
wherein the tearing guide strip that is provided along the longitudinal direction of said base part and said second base part is located between a binding part at which the second base part is bound to the inner surface of the bag and the male or female projection.
8. The zipper equipped bag of claim 7, wherein the binding part between the second base part and the inner surface of the bag is formed on the extended part of the second base part.
9. The zipper equipped bag of claim 6, wherein the tearing guide strip is provided in contact with the base part and thickened part is provided on the base part with which the tearing guide strip is in contact, along the longitudinal direction of the base part, and between the tearing guide strip and the male or female projection.
10. The zipper equipped bag of claim 1 wherein plural thickened parts are provided.
11. The zipper equipped bag of claim 10 wherein the thickened part is provided on both sides of the tearing guide strip.
12. The zipper equipped bag of claim 1 wherein the bag has an unsealed part that is provided at least one peripheral edge of the bag and is suitable as an opening for filling the bag with contents on the periphery and wherein said unsealed part of the bag and is suitable for being sealed after the bag content is filled.
13. The zipper equipped bag of claim 1 wherein the thickened part corrects the tearing direction along a part at which the tearing guide strip is bound with the base film.
14. The zipper equipped bag of claim 1 wherein the base part is bound with the one inner surface at a point on which the thickened part is provided.
15. The zipper equipped bag of claim 1, wherein the thickened part and the base part are formed as one integrated molded article from the same resin material.
16. The zipper equipped bag of claim 1, wherein a guide member is provided in the longitudinal direction of the tearing guide strip along the side of the tearing guide strip opposite of the male or female projection.
17. The zipper equipped bag of claim 16, wherein a gap is provided along the longitudinal direction of the tearing guide strip and between the tearing guide strip and the guide member.
18. The zipper equipped bag of claim 1, wherein the resin forming the tearing guide strip is incompatible with the resin used for the base part.
19. A zipper equipped bag comprising:
a zipper comprising a male projection and a female projection that are interlockable with each other, the zipper being fitted to the bag and enabling said bag to be resealed and unsealed,
the zipper has a base part of a male member in which the male projection is provided and a base part of a female member in which the female projection is provided,
one of the base part of the male member and the base part of the female member has an extended part that extends in a width direction beyond the base part of the other of the male or female member in a state where the male projection and the female projection are interlocked with each other, and, wherein at least a portion of a surface of the extended base part of the one of the male or female member is bound with the film forming the bag on the side which the male projection or the female projection is provided,
in the other base part of the other of the male or female member that does not extend, a surface of the base part on which the male projection and the female projection are not provided is bound with the same film with which the extended base part of one of the male or female member is bound,
the base part of the other of the male or female members that does not extend is provided with a tearing guide strip that is provided along the longitudinal direction of the base part,
a thickened part which makes up less than all of the base part is provided on the base part along the tearing guide strip,
wherein the base part including the thickened part and the tearing guide strip are formed as one integrated molded article,
20. The zipper equipped bag according to claim 19, wherein said tearing guide strip is provided on the base part of the other of the male or female members that does not extend.
21. The zipper equipped bag according to claim 19, the bag has an unsealed part that is provided at at least one peripheral edge of the bag and is suitable as an opening for filling the bag with contents.
22. The zipper equipped bag according to claim 19, wherein a lug is provided in a part where a side seal on which the tearing guide strip is positioned is formed.
23. The zipper equipped bag according to claim 22, wherein the bag comprises at least two films and wherein the lug is formed of a part of the tearing guide strip and two films that are in the state where a part of the tearing guide strip is sandwiched;
the lug is capable of being cut from one of the two films by picking up and pulling the tearing guide strip; and
24. The zipper equipped bag of claim 19 wherein plural thickened parts are provided.
25. The zipper equipped bag of claim 24 wherein the thickened part is provided on both sides of the tearing guide strip.
26. The zipper equipped bag of claim 19 wherein the bag has an unsealed part that is provided at at least one peripheral edge of the bag and is suitable as an opening for filling the bag with contents on the periphery and wherein said unsealed part of the bag and is suitable for being sealed after the bag content is filled.
27. The zipper equipped bag of claim 19 wherein the tearing guide strip is located between a binding part at which the base part that has the extended part bounds to the inner surface of the bag and the male and female projections.
28. The zipper equipped bag of claim 19 wherein the thickened part corrects the tearing direction along a part at which the tearing guide strip is bound with the base film.
29. The zipper equipped bag of claim 19 wherein the base part is bound with the one inner surface at a point on which the thickened part is provided.
30. The zipper equipped bag of claim 19, wherein the tearing guide strip is provided in contact with the base part and the thickened part is provided on the base part with which the tearing guide strip is in contact along the longitudinal direction of the base part, and between the tearing guide strip and the male or female projection.
31. The zipper equipped bag of claim 19, wherein the thickened part and the base part are formed as one integrated molded article from the same resin material.
32. The zipper equipped bag of claim 19, wherein a guide member is provided in the longitudinal direction of the tearing guide strip along the side of the tearing guide strip opposite of the male or female projection.
33. The zipper equipped bag of claim 32, wherein a gap is provided along the longitudinal direction of the tearing guide strip and between the tearing guide strip and the guide member.
34. The zipper equipped bag of claim 19, wherein the resin forming the tearing guide strip is incompatible with the resin used for the base part.
35. A zipper comprising a male projection and a female projection that are interlockable with each other,
in a state where the male projection and the female projection are interlocked, the base part of one of the male or female members extends in a width direction beyond the base part of the other of the male or female members,
wherein a thickened part which makes up less than all of the base part is provided along the tearing guide strip, and wherein the thickened part and the base part are made by a same resin material
wherein the resin forming the tearing guide strip and the resin used for the base part are different, and wherein the base part including the thickened part and the tearing guide strip are formed as one integrated molded article.
36. The zipper of claim 35 wherein plural thickened parts are provided.
37. The zipper of claim 36 wherein the thickened part is provided on both sides of the tearing guide strip.
38. The zipper of claim 35, wherein the tearing guide strip is provided in contact with the base part and the thickened part is provided on the base part with which the tearing guide strip is in contact along the longitudinal direction of the base part, and between the tearing guide strip and the male or female projection.
39. The zipper of claim 35, wherein the thickened part and the base part are formed as one integrated molded article from the same resin material.
40. The zipper of claim 35, wherein a guide member is provided in the longitudinal direction of the tearing guide strip and along the side of the tearing guide strip opposite of the male or female projection.
41. The zipper of claim 40, wherein a gap is provided along the longitudinal direction of the tearing guide strip and between the tearing guide strip and the guide member.
42. The zipper of claim 35, wherein the resin forming the tearing guide strip is incompatible with the resin used for the base part.
US14836439 2004-12-07 2015-08-26 Zipper and zipper-equipped bag Active US9550617B2 (en)
JP2004-354560 2004-12-07
JP2004354560 2004-12-07
JP2004-379276 2004-12-28
JP2004379276 2004-12-28
PCT/JP2005/022477 WO2006062136A1 (en) 2004-12-07 2005-12-07 Fastener and bag with fastener
US72099707 true 2007-06-06 2007-06-06
US14836439 US9550617B2 (en) 2004-12-07 2015-08-26 Zipper and zipper-equipped bag
US15363294 US20170073118A1 (en) 2004-12-07 2016-11-29 Zipper and zipper-equipped bag
US11720997 Continuation US9227774B2 (en) 2004-12-07 2005-12-07 Zipper and zipper-equipped bag
PCT/JP2005/022477 Continuation WO2006062136A1 (en) 2004-12-07 2005-12-07 Fastener and bag with fastener
US72099707 Continuation 2007-06-06 2007-06-06
US15363294 Continuation US20170073118A1 (en) 2004-12-07 2016-11-29 Zipper and zipper-equipped bag
US20150375902A1 true US20150375902A1 (en) 2015-12-31
US9550617B2 true US9550617B2 (en) 2017-01-24
ID=36577963
US11720997 Active 2027-09-12 US9227774B2 (en) 2004-12-07 2005-12-07 Zipper and zipper-equipped bag
US14836439 Active US9550617B2 (en) 2004-12-07 2015-08-26 Zipper and zipper-equipped bag
US15363294 Pending US20170073118A1 (en) 2004-12-07 2016-11-29 Zipper and zipper-equipped bag
US (3) US9227774B2 (en)
JP (1) JP4908228B2 (en)
KR (1) KR101266633B1 (en)
CN (1) CN101072715B (en)
EP (3) EP2851312B1 (en)
WO (1) WO2006062136A1 (en)
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