TW201436730A - Fastener stringer and method for manufacturing fastener stringer - Google Patents

Abstract

This fastener stringer (10, 10a, 10b, 10c) is configured in such a manner that a fastener element (20, 50, 60, 70, 80) comprises a first element section (21, 41, 51, 61, 71, 81) which is formed by first injection and a second element section (22, 52, 62, 72, 82) which is formed by second injection. The first element section (21, 41, 51, 61, 71, 81) has a first element body section (23, 43, 53, 63, 73, 83) which is secured to a first tape surface of a fastener tape (11) and an embedded section (24, 44, 54, 74, 84) which is embedded in the second element section (22, 52, 62, 72, 82). The second element section (22, 52, 62, 72, 82) covers the embedded section (24, 44, 54, 74, 84) and is secured to a second tape surface of the fastener tape (11). As a result of this configuration, the strength of securing of the fastener element (20, 50, 60, 70, 80) to the tape and the strength of joining between the first and second element sections (21, 22, 41, 51, 52, 61, 62, 71, 72, 81, 82) are increased.

Description

Chain belt and chain belt manufacturing method

The present invention relates to a method for manufacturing a chain belt and a chain belt, and more particularly to a chain belt having a fastener element which can present different colors on the front side of the tape of the zipper tape and the back side of the tape, and the chain tape Production method.

Conventionally, as a fastener element for a slide fastener, a synthetic resin zipper element which is formed separately by injection molding a synthetic resin into a fastener tape is known, or A continuous zipper element formed by forming a monofilament into a coil shape or a zigzag shape, and a metal zipper element formed by pressing a sprocket material made of a substantially Y-shaped metal to a fastener tape Wait.

Further, at present, a sliding type fastener having a zipper element made of a synthetic resin which has been injection molded is used for various products such as clothing, bags, shoes, and the like, in order to satisfy the needs of customers or to realize differentiation of products, etc. Gradually, the fasteners to which such sliding fasteners are attached are required to be decorative.

For example, a conventional sliding type fastener is usually formed by a zipper element, a zipper tape, and a slider which are constituent parts of a sliding fastener, and the sliders are formed in the same color, but the sliding fastener is improved. In the case of decorativeness, there is also a case where the constituent members are different in color and constitute a sliding fastener.

Moreover, in recent years, in order to further improve the decorativeness of the fastener-attached product, there is a case where the color of the fastener element attached to the fastener tape is different from the front side of the tape and the back side of the tape.

The sliding fastener is configured such that the color of the fastener element is different from the front side of the tape on the front side of the tape, for example, the sliding fastener is used for the pocket portion of the clothing or the opening of the bag. In the case, the color of the fastener element teeth observed when the sliding fasteners of the left and right fastener elements are engaged are separated from the left and right fastener elements, and the sliding fasteners are opened. The zipper teeth have different colors. Thereby, for example, it is possible to impart designability to a portion such as a pocket of a garment or an opening of a bag, which is easy for the user to see when the article is taken out or the article is placed.

Further, for example, when the sliding type fastener is used for a double-sided type of clothing, if it is a normal ordinary sliding type fastener, only the color of the fastener element can be matched to the one side of the garment. Design, but by making the color of the zipper on the front side of the tape different from the back side of the tape, the color of the zipper can be matched not only with the design of the side of the garment but also with the other side. The design matches.

By thus making the color of the fastener element on the front side of the tape different from the back side of the tape, it is possible to impart a decorative property which is not seen in the usual ordinary sliding fastener to the attached product of the fastening member, thereby improving The added value of the fasteners being installed.

An example of such a sliding type fastener which is different from the color of the zipper tape on the front side of the tape of the zipper tape is disclosed in Japanese Laid-Open Patent Publication No. Hei 10-313909 (Patent Document 1).

The slide fastener element of the slide type fastener described in Patent Document 1 is made of synthetic resin. Further, the portion of the fastener element which is formed on the outer side (the side of the first tape surface) of the fastener tape is colored in the first color, and the fastener element is formed on the inner side of the fastener tape (the second tape surface) The portion of the side is colored by the second color different from the first color.

Further, in Patent Document 1, the method for manufacturing the slide fastener or the fastener tape is not specifically described, but in the case where the fastener element as described above is formed in the fastener tape, in general, First, a synthetic resin material colored in the first color is used to form a fastener element on the first tape surface side of the fastener tape by injection molding. The cloth tape of the tape is divided into a first sprocket portion (also sometimes referred to as a first sprocket half) in a half-shape.

Next, using the synthetic resin material colored in the second color, the second chain which becomes the remaining portion of the fastener element is formed by injection molding on the second tape surface side of the fastener tape on which the first sprocket portion is formed. The tooth portion (sometimes referred to as a second sprocket half) constitutes a fastener element in which the first sprocket portion and the second sprocket portion are integrated by molding. Thereby, a fastener tape having a fastener element having a different color from the first sprocket portion and the second sprocket portion is obtained.

On the other hand, Japanese Patent Laid-Open Publication No. SHO 54-117251 (Patent Document 2) discloses a method of performing the first injection molding and forming a fastener element on the first tape surface side of the fastener tape. a part of the first sprocket portion, and thereafter, the second sprocket belt having the first sprocket portion is subjected to the second injection molding, and the second sprocket portion and the first chain which are the other portions of the fastener element The tooth portions are integrally formed, thereby manufacturing a chain belt.

In Patent Document 2, the case where the color of the fastener element is different from the front side of the tape is not specifically described. However, the first element portion and the second element portion are respectively borrowed. Since it is formed by injection molding, the color of the first element portion and the color of the second element portion can be easily made different.

Here, the method of manufacturing the fastener tape of Patent Document 2 will be specifically described.

In the manufacturing method of Patent Document 2, first, a fastener tape is supplied to a first die including a first upper die and a first lower die. At this time, the cavity space of the first sprocket portion of the formed fastener element is formed in the first upper mold and the lower mold. Further, a projection is provided on the cavity surface of the first lower mold, and the projection pierces the side edge portion of the tape of the fastener tape (the fixing portion of the fastener element), and the through hole is formed in the side edge portion of the tape. Further, a concave portion is formed in a portion of the first sprocket portion corresponding to the through hole.

The zipper tape is interposed between the first upper mold and the first lower mold, and the first mold is closed, whereby the protrusion of the first lower mold pierces the fastener tape and forms a through hole in the fastener tape. Then, by molding the synthetic resin material in the cavity space of the first mold, the first element having a specific shape in which the concave portion is formed by the projection of the first lower mold is formed on the first surface side of the fastener tape. unit.

Then, in the state in which the first sprocket portion is formed in the first upper mold, the first lower mold is replaced with the second lower mold in which the second sprocket portion is formed, and the second sprocket portion is injection-molded. At this time, a cavity space in which the second element portion of the fastener element is formed is formed in the second lower mold.

The second sprocket portion is formed by injection molding using the second lower mold, and the second sprocket portion is integrated with the first sprocket portion at a portion protruding from the fastener tape, and is woven via a zipper tape. The through hole is filled with the synthetic resin in the concave portion of the first sprocket portion and integrated with the first sprocket portion, thereby constituting the fastener element including the first sprocket portion and the second sprocket portion.

According to the manufacturing method of the above-described Patent Document 2, the through hole is formed in the fastener tape at the time of injection molding of the first sprocket portion, and the concave portion in which one of the second element portions is partially filled is formed in the first sprocket portion. It can prevent the shrinkage or closure of the through hole of the zipper tape. In addition, after the injection molding is performed by the second lower mold, the synthetic resin of the second element portion is filled into the concave portion of the first element tooth portion through the through hole of the fastener tape, and the first element portion is replaced with the first element portion. Integration.

In this way, the sprocket half disposed on the first tape surface side and the sprocket half disposed on the second tape surface side are connected via the connecting post formed in the through hole of the fastener tape, thereby improving the zipper The anchoring strength of the sprocket relative to the zipper tape. Further, since the through hole is formed in the fastener tape at the time of injection molding of the first sprocket portion, it is not necessary to provide a through hole in the fastener tape in advance, and the production of the fastener tape can be efficiently performed.

Further, according to the manufacturing method of Patent Document 2, since the first sprocket portion and the second sprocket portion are formed by the injection molding step, the synthetic resin material and the constituting the first sprocket portion can be formed. The synthetic resin materials of the second sprocket portions have different colors, and a fastener tape having a zipper element having a different color from the front side of the tape and the back side of the tape is attached.

Prior technical literature Patent literature

Patent Document 1: Japanese Patent Laid-Open No. Hei 10-313909

Patent Document 2: Japanese Patent Laid-Open No. 54-117251

The zipper element of the zipper element having the color of the first sprocket portion disposed on the first tape surface side and the second sprocket portion disposed on the second tape surface side is different in the patent document 1 In other cases, as described above, generally, the first sprocket portion is formed into a fastener tape using a synthetic resin material colored in the first color, and thereafter, a synthetic resin colored in the second color is used. The material forms the second element portion in the fastener tape on which the first sprocket portion is formed, and the second element portion and the first element portion are integrated.

However, in the above-described manner, the first sprocket portion and the second sprocket portion having the form in which the center surface of the tape in the front and back directions of the zipper tape is divided into half is formed by the injection molding step. When the zipper tape is used to form the fastener element, the first and second sprocket portions are fixed only to one side of the fastener tape. Therefore, the fixing strength of each of the first and second sprocket portions with respect to the fastener tape is lowered, and as a result, the fixing strength of the entire fastener element with respect to the fastener tape is also lowered, so that it is emitted once by one shot. Compared with the conventional chain belt which is formed to form a fastener element, there is a disadvantage that the fastener element is easily detached from the fastener tape.

Further, in the fastener element of Patent Document 1, the boundary portion between the first sprocket portion and the second sprocket portion is formed in a planar shape. Therefore, for example, when the slider is slid to engage or disengage the left and right element rows, when the zipper element receives an external force (stress) from the slider or the zipper element of the engaging object, or the zipper and other When the member collides and receives an external force (stress), the first sprocket portion and the second sprocket portion are separated at the boundary portion thereof, and the fastener element is easily broken. Therefore, in the sliding fastener of Patent Document 1, it is difficult to ensure the strength that can withstand long-term use.

On the other hand, in the method of manufacturing the fastener tape described in Patent Document 2, the first sprocket portion and the second sprocket portion are integrated with each other from the portion protruding from the fastener tape, and the second chain is as described above. One of the tooth portions is filled to the first sprocket via a through hole formed in the zipper tape The recess of the department is integrated. Therefore, the fastener element of Patent Document 2 is more difficult to separate into the first sprocket portion and the second sprocket portion than the fastener element zipper in Patent Document 1.

However, in the fastener element of Patent Document 2, the first sprocket portion and the second sprocket portion are also substantially fixed only to one side of the zipper tape, respectively, and therefore, the zipper element is opposed to the zipper tape. The tendency of the fixation strength to decrease.

Further, since the boundary portion between the first sprocket portion and the second sprocket portion in the portion protruding from the fastener tape is formed in a planar shape, the first sprocket is subjected to stress when the slider element is subjected to stress when the slider slides. The second sprocket portion and the second sprocket portion are easily separated at the boundary portion of the plane, and the fastener element is broken, so that it is difficult to obtain sufficient joint strength between the first and second sprocket portions.

Further, in the case of the fastener tape described in Patent Document 1 or Patent Document 2, the shape of the meshing head portion and the neck portion of the first sprocket portion and the meshing head portion and the neck portion of the second sprocket portion are disposed. The shape is positive back symmetry. In this case, the shape of the engaging head and the neck is directly related to the quality of the meshing strength of the sliding fastener, and therefore, a very important part requires high dimensional accuracy.

However, in the case of Patent Document 1 or Patent Document 2, after the zipper tape is subjected to the injection molding of the first sprocket portion, it is difficult to perform the second detachment of the zipper tape when the zipper tape is formed by the second sprocket portion. The position of the mold for molding the sprocket portion is accurately aligned with respect to the meshing head portion and the neck portion of the first sprocket portion.

Therefore, there is a slight misalignment between the meshing head portion on the first sprocket portion side and the meshing head portion and the neck portion on the second sprocket portion side, or a casting leak when the second sprocket portion is formed. In other cases, when the sliding type fastener is formed, the ease of meshing of the left and right fastener elements, the meshing strength, and the sliding property of the slider are deteriorated.

In addition, when a casting leak occurs during the molding of the second sprocket portion, when the first sprocket portion and the second sprocket portion are formed in mutually different colors, a portion of the casting leakage is conspicuous. And was treated as a defective product.

The present invention has been made in view of the above prior problems, and a specific object thereof is to provide The first sprocket portion and the second sprocket portion formed after the first sprocket portion are formed to have a different color to improve the decorative property, and the fixing strength of the fastener element with respect to the fastener tape is improved, and The joint strength between the first and second sprocket portions is also improved, and the chain belt for long-term use and the method for manufacturing the chain belt can be stably withstood.

In order to achieve the above object, the most important feature of the chain belt provided by the present invention is that the basic structure includes a fastener tape in which a core cord portion is disposed along a side edge of the tape, and a plurality of composites fixed to the core string portion. a fastener element made of a resin, wherein the fastener element includes a first sprocket portion that is molded and formed on the fastener tape, and a second sprocket portion that is formed by injection molding and integrated with the first sprocket portion, and the The first sprocket main body portion is integrally formed with the first sprocket main body portion and the embedded portion, and the first sprocket main body portion is fixed to the first tape surface of the fastener tape and extends from the zipper tape to the tape width direction. The burying portion is fixed to the second tape surface side of the fastener tape that is opposite to the first tape surface and is embedded in the second sprocket portion, and the core wire portion of the fastener tape At least a portion is gripped by the first sprocket body portion and the embedded portion, and the second sprocket portion covers the embedded portion and is fixed to the second tape surface of the fastener tape.

In the chain belt of the present invention, preferably, the first sprocket main body portion includes: a main body portion fixed to the first tape surface of the fastener tape; and a neck portion facing the tape from the main body portion The outer side extends and has a shape that is narrowed in the longitudinal direction of the tape; and the inflated engaging head extends from the neck to the width direction of the tape.

Further, in the chain belt of the present invention, it is preferable that the housing portion has a housing recess portion in which the one of the second element portions is accommodated in the outer circumferential side surface portion in the direction in which the embedded portion is raised from the fastener tape. In this case, it is preferable that the accommodation recessed portion includes: a first accommodation recessed portion disposed on an outer circumferential side surface portion of the inner side of the tape portion of the embedding portion; and a second accommodation recess portion disposed in the meshing head portion of the embedding portion Lateral side of the side.

In the chain belt of the present invention, preferably, the embedded portion includes: a first size region portion, The dimension of the tape in the longitudinal direction is larger than the minimum dimension of the tape in the longitudinal direction of the neck, and is fixed to the second tape surface of the fastener tape; and the second size region is larger than the first size The region portion is disposed on the side of the engaging head portion, and the dimension in the longitudinal direction of the tape is smaller than the smallest dimension in the longitudinal direction of the tape of the neck portion.

Further, it is preferable that the embedded portion has a region from a position closer to the meshing head side than a narrowest portion of the neck portion in the tape width direction to a position reaching the core string portion, and the first sprocket body Department integration.

Further, in the chain belt of the present invention, preferably, the second sprocket portion includes a base portion fixed to the second tape surface of the fastener tape, and a tape extending from the base portion toward the tape width direction. The sprocket head extending sideways, and the sprocket head extends more than the neck of the first sprocket portion in the length direction of the tape.

Further, the second sprocket portion may include a main body portion that is fixed to the second tape surface of the fastener tape, and a neck portion that extends from the main body portion toward a tape width in a tape width direction. And having a shape that is narrowed in the longitudinal direction of the tape; and an inflated engaging head that extends from the neck to the width direction of the tape.

Next, the most important feature of the method for manufacturing a fastener tape provided by the present invention is that, as a basic configuration, the fastener tape includes a fastener tape having a core cord portion disposed along a side edge of the tape, and is fixed to the fastener tape. a plurality of synthetic resin fastener elements having a tape side edge portion on the core cord side, wherein the fastener element includes a first sprocket portion that is formed and formed on the fastener tape, and the first sprocket a second sprocket portion that is injection molded and molded and integrated with the first sprocket portion, and the manufacturing method includes a first molding step of injection molding the first sprocket portion, the first sprocket The first sprocket main body portion that is fixed to the first tape surface of the zipper tape and protrudes from the zipper tape in the tape width direction, and the second tape surface side that is fixed to the zipper tape And embedding the embedded portion in the second sprocket portion to grip at least a portion of the core cord portion of the fastener tape; and the second molding step of projecting and molding the second sprocket portion, the second sprocket The first part is formed with respect to the first The fastener tape of the sprocket portion covers the embedded portion and is fixed to the second tape surface of the fastener tape.

In the fastener tape according to the present invention, each of the fastener elements attached to the core string portion of the fastener tape includes a first sprocket portion that is molded and formed on the fastener tape, and is integrated with the first sprocket portion by injection molding. The second sprocket.

Further, the first sprocket portion is integrally formed and fixed to the first tape surface of the fastener tape, and the first sprocket main body portion that protrudes from the fastener tape in the tape width direction, and the first sash tape portion that is fixed to the zipper tape a cloth-side surface portion and a buried portion embedded in the second sprocket portion, wherein at least a portion of the core portion of the fastener tape is grasped by the first sprocket main portion and the embedded portion of the first sprocket portion. Preferably, the first sprocket body portion and the embedded portion surround and grip the core cord portion. Further, the second sprocket portion covers the embedded portion of the first sprocket portion and is fixed to the second tape surface of the fastener tape.

In the chain belt of the present invention having such a configuration, since the first sprocket portion and the second sprocket portion are formed and integrated by the injection molding step, the first sprocket portion and the second sprocket portion are available. It is easy to make the color different and improve the decorativeness.

Further, in the chain belt of the present invention, the first sprocket portion individually grips the core cord portion of the fastener tape (preferably surrounding and gripping the entire core cord portion), and thus, for example, Patent Documents 1 and 2 As described above, the fixing strength of the fastener element with respect to the fastener tape is greatly improved as compared with the previous fastener element in which the first and second sprocket portions are sandwiched by the core cord portion of the fastener tape.

Further, in the fastener element of the present invention, the first sprocket portion and the second sprocket are in a state in which the embedded portion of the first sprocket portion is covered by the second sprocket portion and embedded in the second sprocket portion. Since the parts are integrated, the joint strength between the first sprocket portion and the second sprocket portion can be increased as compared with the fastener elements of Patent Documents 1 and 2.

Therefore, in the chain belt of the present invention, it is difficult to cause the zipper element to be detached from the zipper tape or the zipper element to be broken as compared with the previous sliding type fasteners of Patent Documents 1 and 2. Loss, by using the chain belt to form a sliding fastener, the sliding fastener can be used for a long time and stably.

In the chain belt of the present invention, the first sprocket body portion includes: a main body portion fixed to the first tape surface of the fastener tape; and a neck portion extending from the main body portion toward the outside of the tape, and The shape is narrowed in the longitudinal direction of the tape; and the inflated engaging head extends from the neck to the width direction of the tape. Thereby, when the slide fastener element of the present invention is used to form the slide fastener element, the fastener element rows formed on the right and left fastener tapes can be stably engaged and separated.

Further, in the chain belt of the present invention, the housing recessed portion in which one of the second element portions is accommodated is disposed on the outer peripheral side surface portion in the direction in which the embedded portion is raised from the fastener tape. By arranging such a housing recess, the joint strength between the first sprocket portion and the second sprocket portion can be further increased, so that the zipper element can be more effectively prevented from being damaged, or the zipper element can be zippered. Fall off.

In this case, the accommodating recess includes a first accommodating recess that is disposed on the outer peripheral side surface of the inner side of the strap in the embedding portion, and a second accommodating recess that is disposed on the outer side surface of the embedding portion on the meshing head side. . In general, in the sliding type fastening member, when the left and right element rows are engaged, separated, or when the left and right element rows are in meshing state, it is easy to apply a force in the tape width direction to the fastener element (for example, The lateral zipper teeth of the left and right zipper teeth in the engaged state are stretched in a direction of being separated from each other along the width direction of the tape.

Therefore, the housing recess includes the first and second housing recesses as described above, and one of the second element portions is accommodated in the first and second housing recesses to form a fastener element, whereby the fastener element can be effectively used. The ground is resistant to the force in the width direction of the tape, and therefore, the joint strength between the first sprocket portion and the second sprocket portion can be more effectively improved to be suitable for use of the slide fastener.

Further, in the chain belt of the present invention, the embedded portion of the first sprocket portion includes: a first size region portion having a dimension in a longitudinal direction of the tape which is larger than a minimum dimension of a tape length direction of the neck portion, and is fixed to a second tape surface of the fastener tape; and a second size region portion disposed on the side of the meshing head portion than the first size region portion, and the dimension of the tape length direction is smaller than the neck portion The smallest dimension of the length of the tape.

Thereby, the fixing strength of the embedded portion with respect to the core cord portion and the second tape surface of the fastener tape can be effectively improved. Further, the dimension of the second dimension region in the longitudinal direction of the tape is larger than the dimension of the first dimension region in the longitudinal direction of the tape, and the first dimension region and the second dimension region of the first sprocket portion. After the step is provided between the steps, the embedded portion including the first and second size region portions is embedded in the second sprocket portion, whereby the force applied to the width direction of the tape sprocket can be more effectively withstood ( In particular, the lateral pulling force) can maintain the state in which the first sprocket portion and the second sprocket portion are coupled more stably.

Further, in the chain belt of the present invention, the embedded portion of the first sprocket portion is located closer to the head portion than the narrowest portion of the neck portion in the width direction of the tape to the position reaching the core portion. The region is integrated with the first sprocket body portion. With this configuration, the embedded portion of the first sprocket portion can be embedded in the second sprocket portion from a large extent of the first sprocket main portion, so that the first sprocket portion and the second sprocket portion can be formed. The combination is stronger.

Further, in the chain belt of the present invention, the second sprocket portion includes a base portion fixed to the second tape surface of the fastener tape, and a fastener extending outward from the base portion toward the tape width direction. head. Further, the sprocket head of the second sprocket portion extends in the longitudinal direction of the tape from the neck portion of the first sprocket portion.

When the second sprocket portion is configured in this manner, the shape of the second sprocket portion is different from that of the first sprocket portion. Therefore, when the second sprocket portion is formed after the first sprocket portion is formed, the second sprocket portion is formed. It is easy to position the mold for forming the second sprocket portion, and the second sprocket portion can be efficiently formed. Further, even if the position of the molding die of the second sprocket portion is slightly shifted from the first sprocket portion, it is difficult to cause casting leakage, and further, when the splicing fastener is used to form the sliding fastener, the left and right zipper elements are Since the second sprocket portions are not directly meshed with each other, the influence of the ease of meshing of the left and right fastener elements, the meshing strength, and the slidability of the slider can be suppressed to a small extent.

Moreover, in the invention, the second sprocket portion may further include: a main body portion that is fixed to a second tape surface of the fastener tape; the neck portion extending outward from the main body portion toward the tape width direction, and having a shape narrowed in the longitudinal direction of the tape; and an inflated meshing The head extends from the neck to the width of the tape. When the second sprocket portion is configured in this manner, when the slidable fastener is constructed using the fastener tape of the present invention, a large meshing strength can be stably ensured.

Next, a method of manufacturing a fastener tape according to the present invention includes: a first molding step of injection molding a first sprocket portion including a first tape surface fixed to a fastener tape and a self-zip tape a first sprocket main body portion that protrudes in the width direction of the tape, and an embedded portion that is fixed to the second tape surface side of the fastener tape, and that grips at least a part of the core rope portion of the fastener tape (preferably surrounded And grasping the entire circumferential surface of the core cord portion of the zipper tape; and a second forming step of injection molding the second sprocket portion, the second sprocket portion being covered with respect to the zipper tape having the first sprocket portion formed thereon The embedded portion of the first sprocket portion is embedded and fixed to the second tape surface of the fastener tape.

According to the production method of the present invention, the above-described chain belt of the present invention can be stably produced. Therefore, as described above, the manufactured fastener tape can easily change the color between the first sprocket portion and the second sprocket portion, and thus the decorative property is improved.

Moreover, the fixing strength of the fastener element with respect to the fastener tape can be increased, and the joint strength between the first sprocket portion and the second sprocket portion can be increased, so that it is difficult to produce the zipper fastener from the zipper. The tape is detached or the zipper is broken. Therefore, by using the chain belt to constitute the sliding fastener, the sliding fastener can be used for a long time and stably.

1‧‧‧Sliding fasteners

5‧‧‧Sliding parts

5a‧‧‧Slider body

5b‧‧‧ pull film

6‧‧‧stop (1st stop)

7‧‧‧ separable inserts

7a‧‧‧Latch

7b‧‧‧ pins

7c‧‧‧Opening cylinder

10, 10a‧‧‧ chain belt

10b, 10c‧‧‧ chain belt

11‧‧‧ zipper tape

11a‧‧‧core cord

11b‧‧‧ reinforcing film

12‧‧‧Chain row

20‧‧‧zipper teeth

21‧‧‧1st sprocket

22‧‧‧2nd sprocket

22a‧‧‧ base

22b‧‧‧ sprocket head

23‧‧‧1st sprocket body

23a‧‧‧ Main body

23b‧‧‧ neck

23c‧‧‧ meshing head

23d‧‧‧Steps Department

24‧‧‧buried department

24a‧‧‧1st size area

24b‧‧‧2nd size area

24c‧‧ Section

25a‧‧‧1st containment recess

25b‧‧‧2nd containment recess

31‧‧‧1st mould

31a‧‧‧Model

31b‧‧‧上模

31c‧‧‧1st slider core

31d‧‧‧2nd slider core

32‧‧‧2nd mould

32a‧‧‧下模

32b‧‧‧上模

33, 34‧‧ ‧ gate

41‧‧‧1st sprocket

43‧‧‧1st sprocket body

44‧‧‧buried department

44a‧‧‧1st size area

44b‧‧‧2nd size area

45a‧‧‧1st containment recess

45b‧‧‧2nd containment recess

50‧‧‧zipper teeth

51‧‧‧1st sprocket

52‧‧‧2nd sprocket

52a‧‧‧ base

52b‧‧‧ sprocket head

53‧‧‧1st sprocket body

53c‧‧‧ meshing head

54‧‧‧buried department

54a‧‧‧1st size area

54b‧‧‧2nd size area

56‧‧‧Protruding

60‧‧‧zipper teeth

61‧‧‧1st sprocket

62‧‧‧2nd sprocket

62a‧‧‧ base

62b‧‧‧ sprocket head

63‧‧‧1st sprocket body

63b‧‧‧ neck

70‧‧‧zipper teeth

71‧‧‧1st sprocket

72‧‧‧2nd sprocket

72a‧‧‧ Main body

72b‧‧‧ neck

72c‧‧‧ meshing head

72d‧‧‧Shoulder

72e‧‧‧ embedded recess

73‧‧‧1st sprocket body

74‧‧‧buried department

74a‧‧‧1st size area

74b‧‧‧2nd size area

80‧‧‧zipper teeth

81‧‧‧1st sprocket

82‧‧‧2nd sprocket

82a‧‧‧ Main body

82b‧‧‧ neck

82c‧‧‧ meshing head

83‧‧‧1st sprocket body

83a‧‧‧ Main body

83b‧‧‧ neck

83c‧‧‧ meshing head

84‧‧‧buried department

84a‧‧‧1st size area

84b‧‧‧2nd size area

Fig. 1 is a plan view showing a slide fastener having a chain belt according to Embodiment 1 of the present invention.

Fig. 2 is a perspective view showing the fastener element of the fastener tape and the core cord portion of the fastener tape.

Fig. 3 is a plan view showing a part of the chain belt in an enlarged manner.

Fig. 4 is a bottom plan view showing a part of the chain belt in an enlarged manner.

Figure 5 is a cross-sectional view taken along line V-V of Figure 3.

Fig. 6 is a perspective view showing the first element tooth portion of the fastener element.

Fig. 7 is a plan view of the first sprocket portion.

Fig. 8 is a rear view of the first sprocket.

Fig. 9 is a side view of the first sprocket portion as seen from the side of the engaging head.

Fig. 10 is a side view of the first element tooth portion viewed from the main body side (inside of the tape).

Fig. 11 is a cross-sectional view showing the arrangement of the molds in the first molding step of injection molding the first sprocket portion.

Fig. 12 is a cross-sectional view showing the arrangement of a mold in a second molding step of injection molding the second element portion.

Fig. 13 is a plan view showing a first element tooth portion of a fastener element of a variation of the first embodiment.

Figure 14 is a cross-sectional view of the XIV-XIV line shown in Figure 13.

Figure 15 is a cross-sectional view taken along the line XV-XV shown in Figure 13.

Fig. 16 is a perspective view showing a fastener element of a fastener tape according to a second embodiment of the present invention.

Fig. 17 is a perspective view showing the first element tooth portion of the fastener element.

Fig. 18 is a plan view showing a part of a chain belt according to a third embodiment of the present invention in an enlarged manner.

Fig. 19 is a partially enlarged plan view showing a portion of a slide fastener formed using the fastener tape.

Fig. 20 is a plan view showing a part of a chain belt according to a fourth embodiment of the present invention in an enlarged manner.

Figure 21 is a cross-sectional view taken along line XXI-XXI of Figure 20.

Fig. 22 is a plan view showing a part of a chain belt according to a fifth embodiment of the present invention in an enlarged manner.

Fig. 23 is a plan view showing the first element tooth portion of the fastener element.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the embodiments. Furthermore, the present invention is not limited to the embodiments described below as long as it has substantially the same configuration as the present invention and exerts the same effects. A variety of changes can be made.

Example 1

Fig. 1 is a plan view showing a slide fastener having the chain belt of the first embodiment. Fig. 2 is a perspective view showing the fastener element of the fastener tape and the core cord portion of the fastener tape. 3 and 4 are a plan view and a bottom view showing a part of the chain belt in an enlarged manner, and Fig. 5 is a cross-sectional view taken along line V-V shown in Fig. 3.

In the following description, the front-rear direction refers to the longitudinal direction of the fastener tape, and is the same direction as the sliding direction of the slider sliding. In particular, the direction in which the slider slides is set to the front in such a manner that the left and right fastener elements are engaged to lock the slide fastener, and the slide fasteners are separated by separating the left and right fastener elements. The way to slide the slider is set to the rear.

The left-right direction refers to the width direction of the tape of the zipper tape, especially the direction parallel to the tape surface of the zipper tape and orthogonal to the tape length direction. Further, the vertical direction means a tape thickness direction orthogonal to the tape surface of the fastener tape. In particular, the direction in which the side of the slider of the slider is disposed on the fastener tape is set to the upper side, and the direction of the opposite side is set to the lower side. For example, in Fig. 1, the upper side refers to the direction toward the front side of the paper surface, and the lower side refers to the direction toward the back side of the paper surface.

As shown in FIG. 1 , the sliding type fastening member 1 of the first embodiment includes a pair of chain belts 10 which are formed on the side edges of the opposite belts of the left and right zipper tapes 11 to form the element rows 12 . a slider 5 configured to be slidable along the element row 12; a stop (first stop) 6 disposed adjacent to the front end side of the element row 12 to prevent the slider 5 from falling off; The insert insert 7 is disposed adjacent to the rear end side of the element row 12.

Furthermore, as described below, the sliding type fastening member 1 of the first embodiment has the main features in the configuration of the fastener element 20, and the slider 5, the stopper 6, and the detachable insert 7 have the same general purpose. The slider, the stopper, and the detachable insert having the previously slidable fastener elements of the synthetic resin zipper element are substantially identical.

For example, the slider 5 in the first embodiment includes a slider main body 5a and a pull tab 5b rotatably held by the slider main body 5a. Further, the slider main body 5a includes: upper and lower flaps; a guide post that connects between the front ends of the upper and lower flaps; an upper flange portion that is suspended from the left and right side edge portions of the upper flap; and a lower flange portion. The left and right side edge portions of the lower wing plate are erected; and the pull tab mounting column is erected on the upper surface of the upper wing plate.

Further, at the front end of the slider main body 5a, the guide post is sandwiched to form a left and right introduction opening, and an engagement opening is formed at the rear end of the slider main body 5a. Further, a sprocket guiding path that connects the left and right introduction ports and the engagement opening in a substantially Y shape is formed so as to be surrounded by the upper and lower wing plates, the upper flange portion, and the lower flange portion. Further, a tape insertion gap through which the fastener tape 11 can be inserted is formed between the flange portion and the lower flange portion disposed on the right and left side portions of the slider body 5a.

The stoppers 6 are respectively disposed at the front ends of the left and right fastener tapes 11, and are fixed to the fastener tape 11 adjacent to the element rows 12. Further, the one (left side) stopper 6 is provided with a protruding piece portion that protrudes toward the inner side of the tape so as to abut against the upper and lower flange portions of the slider 5.

The detachable insert 7 includes: a latch 7a fixed to the side edge portion of the tape of the left zipper tape 11; and a pin 7b fixed to the side edge portion of the tape of the right zipper tape 11; The tail cylinder 7c is integrally formed at the rear end portion of the cylindrical pin 7b, and is provided with an insertion recess into which the plug 7a is inserted.

Further, in the present invention, the configuration of the slider 5, the stopper 6, and the detachable insert 7 is not limited and may be arbitrarily changed. For example, instead of the slider 5 described above, the slider may be held on the double-sided corresponding slider of the slider body from the upper blade to the lower blade to be rotated on the outer surface side, or the slider may be attached to the slider. A slider or the like on both the wing side and the lower wing side of the main body. Further, instead of the separable insert 7, a stop that is disposed across the lower end portion of the side edge portion of the tape in the left and right fastener tapes 11 and prevents the slide member 5 from coming off may be disposed (second stop) ).

Each of the chain belts 10 in the first embodiment is formed by performing two injections as described below. The side edge portion of the tape of the zipper tape 11 woven or knitted is formed by forming a plurality of synthetic resin fastener elements 20.

In this case, each of the left and right fastener tapes 11 has a core-like portion 11a which is disposed along the opposite side edge of the tape and which is convex in the front-back direction of the tape, and includes the core portion 11a. The side edge portions of the cloth tape are fixed to the plurality of fastener element teeth 20 at a specific mounting pitch (interval) along the longitudinal direction of the tape, thereby forming the element rows 12. Further, the front end portion and the rear end portion of the fastener tape 11 are reinforced by attaching the reinforcing film 11b.

The fastener element 20 of the first embodiment includes a first sprocket portion 21 which is formed by the first injection molding, and a second sprocket portion 22 which is formed after the first sprocket portion 21 is formed. It is formed by the second injection molding. The first sprocket portion 21 and the second sprocket portion 22 are formed of a thermoplastic synthetic resin such as a polyester resin such as polyamine resin or polybutylene terephthalate or a polyacetal resin.

Further, in the appearance of the fastener element 20 of the first embodiment, as shown in FIG. 2, the first sprocket portion 21 is disposed on the back surface (first tape surface) of the tape of the fastener tape 11, and presents the first In the first color (for example, gray), the second sprocket portion 22 is disposed on the side of the tape front (second tape surface) of the fastener tape 11 in a color (for example, white).

Here, the term "different color" means that the color of the first sprocket portion 21 and the color of the second sprocket portion 22 are different from each other by visual recognition. Further, the side of the back side of the tape (the first tape side) and the side of the front side of the tape (the second tape side) of the core cord portion 11a of the fastener tape 11 can be the core portion of the front and back of the fastener tape 11 The center of 11a is divided into a first cloth surface and a second cloth surface at the junction. That is, the back surface of the tape (the first tape surface) of the fastener tape 11 includes the back surface of the tape of the flat tape portion of the fastener tape 11 and the back surface of the tape of the core wire portion 11a (that is, the circumference of the back side of the tape). The front surface of the tape (the second tape surface) includes the front surface of the tape of the flat tape portion of the fastener tape 11 and the front surface of the tape portion 11a (that is, the circumferential surface of the front side of the tape).

Further, the first and second sprocket portions 21 and 22 seem to fix the first sprocket portion 21 to the back surface of the tape of the fastener tape 11, and the second sprocket portion 22 is fixed to the zipper tape 11 With a front side, and The portions protruding from the opposite side edges of the tape from the fastener tape 11 are connected to each other, but actually have the following forms.

Specifically, as shown in FIGS. 6 to 10 , the first sprocket portion 21 of the first embodiment includes a first sprocket main body portion 23 disposed on the back surface of the zipper tape 11 (first) 1 tape side), and the opposite side edge of the tape from the fastener tape 11 protrudes toward the tape width direction; and the embedded portion 24 is integrally formed with the first sprocket body portion 23 and is buried in the second Inside the sprocket portion 22.

The first sprocket main body portion 23 of the first sprocket portion 21 includes a main body portion 23a fixed to the back surface of the tape at the side edge portion of the tape, and has a substantially rectangular shape in a bottom view, and a neck portion 23b from the main body portion 23a. Continuously formed, the zipper tape 11 extends in the width direction of the tape and has a shape narrowed in such a manner that the size of the tape is tapered; and an enlarged engaging head portion 23c which is further extended from the neck portion 23b The belt extends in the width direction and protrudes in the longitudinal direction of the tape in a bottom view to have a substantially elliptical shape. In this case, the main body portion 23a is fixed to the circumferential surface of the tape back side of the flat tape portion of the tape side edge portion and the back surface side of the tape winding portion 11a.

In the fastener element 20 of the first embodiment, the engaging head portion 23c and the neck portion 23b of the first sprocket main body portion 23 constitute an engaging portion that meshes with the fastener element 20 of the meshing target. Furthermore, in the present invention, the meshing portion of the first sprocket portion 21 may be formed of other shapes or configurations.

Further, in the first sprocket main body portion 23 of the first embodiment, a step portion 23d is provided at or near the boundary portion between the neck portion 23b and the engaging head portion 23c, and the step portion 23d is made of the first sprocket The size (thickness dimension) of the cloth belt of the main body portion 23 in the front-back direction is formed toward the inclined surface on the side of the meshing head portion 23c. The inclined surface of the step portion 23d is formed such that the thickness of the first sprocket main portion 23 is inclined downward toward the front end of the engaging head portion 23c. Further, one portion of the step portion 23d (the central portion in the longitudinal direction of the tape) forms one of the following second housing recesses 25b.

In this case, the step portion 23d is disposed above the engaging head portion 23c on the front end side. The surface is formed to be parallel to the back surface of the tape of the fastener tape 11. Further, the upper surface of the engaging head portion 23c is positioned at a height in the front-back direction of the upper surface of the tape to be attached to the back surface of the tape of the main body portion 23a to the fastener tape 11 (excluding the peripheral surface of the core portion 11a) It is formed by the same height position as the fixing surface.

The embedding portion 24 of the first sprocket portion 21 in the first embodiment is partially directed toward the front side of the tape from the side edge of the first sprocket main portion 23 from the side edge of the tape of the fastener tape 11 (the second tape The surface is erected and folded toward the front side of the tape so as to surround the core string portion 11a of the fastener tape 11, and is fixed to the front surface of the tape including the side edge portion of the tape portion 11a. In this case, the direction in which the embedded portion 24 rises is parallel to the vertical direction.

Further, the embedded portion 24 is disposed so as to be located at a central portion of the first sprocket main portion 23 in the longitudinal direction of the tape with respect to the first sprocket main portion 23. Further, the embedded portion 24 includes a first size region 24a disposed on the inner side of the tape, and a second size region 24b having a smaller dimension (length dimension) in the longitudinal direction of the tape than the first size region 24a. The method is extended from the first size region 24a toward the meshing head portion 23c via the segment portion 24c, and the embedded portion 24 is formed in a substantially T-shape in plan view.

In this case, the length dimension (the dimension in the longitudinal direction of the tape) of the first size region 24a is set larger than the length dimension of the neck portion 23b of the first sprocket body portion 23, and the length of the second dimension region portion 24b. The size is set to be smaller than the length dimension of the neck portion 23b of the first sprocket body portion 23.

Further, the embedding portion 24 of the first embodiment includes an outer peripheral side surface disposed in a direction rising from the fastener tape 11 and a top surface of the top surface of the embedding portion 24, and the first size region portion 24a of the embedding portion 24 The upper surface and the upper surface of the second size region portion 24b are formed as a single flat surface.

In this case, the outer peripheral side surface of the embedded portion 24 includes the inner side surface of the first size area portion 24a facing the inner side of the tape, the front end surface of the first size area portion 24a, and the outer side of the first size area portion 24a (the front side of the tape) 2 size area portion 24b side) outer side surface, second size area portion The rear end surface of the front and the second end portion 24b of the second dimension portion 24b face the outer side surface of the tape.

The outer surface of each of the first size region portion 24a and the second size region portion 24b faces the same direction. Here, the inner side of the tape is in the direction of the width direction of the tape from the side edge of the tape of the fastener tape 11 in the direction in which the fastener tape 11 is present, and the outer side of the tape is attached to the tape of the fastener tape 11 in the width direction of the tape. The side edge has a direction from the outer side of the zipper tape 11 and is opposite to the inner side of the tape.

Further, the inner side surface of the first size region 24a is the end surface of the first fastener element portion 24a in the tape width direction, and the core cord portion 11a of the fastener tape 11 is located on the end surface on the flat side. The other end surface of the first size region portion 24a is an outer surface of the first dimension region portion 24a and is located on the end surface of the core cord portion 11a. Furthermore, the outer side surface can also be provided so that the core cord portion 11a is located outside the belt.

Moreover, the first size region 24a of the embedded portion 24 has a substantially rectangular shape that is smaller than the main body portion 23a of the first sprocket main body portion 23 in plan view (see FIG. 7). In this case, the inner side surface of the first size region portion 24a disposed toward the inside of the tape in the longitudinal direction of the tape is disposed closer to the inner side of the tape than the core wire portion 11a of the fastener tape 11. Further, the first size region portion 24a is fixed to the circumferential surface of the front side of the tape of the core cord portion 11a of the fastener tape 11, and is also fixed to the side edge of the tape in the fastener tape 11 over the core portion 11a. The flat cloth of the department is front. On the other hand, the outer side surface of the first size region portion 24a facing the second size region portion 24b is disposed closer to the tape than the tape side edge of the fastener tape 11 (outer edge of the core portion 11a). The position of the inside.

Further, a first housing recess 25a is provided in the inner surface portion (the portion including the inner side surface) facing the inner side of the tape in the first size region portion 24a, and the first housing recess portion 25a is adjacent to the front surface of the tape of the fastener tape 11. The position is formed in a curved shape toward the inside of the first size region 24a, and one of the second element portions is partially received and accommodated as described below.

Here, the first housing recess 25a and the second housing recess 25b described below are portions that are viewed from a cross section in a direction orthogonal to the tape surface of the fastener tape 11 in addition to the embedded portion 24. In the circumferential side portion, the outer circumferential side surface of the embedded portion 24 is recessed so as to enter the inner end position (i.e., the position of the ridge portion of the outer circumferential side surface and the upper surface).

In other words, the size of the embedding portion 24 in the region in which the first housing recess 25a is disposed is in the direction of the second edge in the tape width direction from the edge of the inner side of the tape in the upper surface of the embedding portion 24. The area portion 24b gradually becomes larger. Moreover, the size of the embedding portion 24 in the region in which the second housing recess 25b is disposed is in the direction of the tape width direction from the edge position of the outer side of the tape in the upper surface of the embedding portion 24 toward the first size region. The portion 24a gradually becomes larger.

The second size region 24b of the embedded portion 24 is fixed to the circumferential surface of the core cord portion 11a of the fastener tape 11, and is integrated with the first sprocket body portion 23. In particular, the second-sized region portion 24b is located closer to the meshing head portion 23c than the narrowest portion of the neck portion 23b of the first sprocket body portion 23 in the tape width direction (specifically, the first chain) The position of the step portion 23d of the tooth main portion 23 reaches the position reaching the position of the core portion 11a, and is firmly integrated with the first sprocket main portion 23.

In addition, the upper end portion of the second-sized region portion 24b is formed to protrude toward the distal end side of the meshing head portion 23c at a position in the tape width direction of the step portion 23d formed in the first sprocket body portion 23. Further, the outer surface of the second-sized area portion 24b facing the outer side of the tape is formed as an inclined surface that is disposed in the second dimension by the lower end of the first sprocket body portion 23 side with respect to the front-back direction of the tape. The position of the inner side of the area portion 24b is inclined.

In this manner, the outer surface of the second size region 24b is disposed obliquely with respect to the front and back directions of the tape, whereby the second storage recess 25b is formed on the outer surface portion of the second size region 24b, and the second housing recess 25b is oriented. The inside of the second-sized area portion 24b is formed to be linearly recessed, and one of the second element-toothed portions 22 is partially received and accommodated as described below. In addition, the second accommodating recessed portion 25b is formed not only by the outer side surface of the inclined portion of the second sized area portion 24b but also by the inclined surface portion of the step portion 23d disposed on the first sprocket main portion 23 as described above. to make.

The first sprocket portion 21 of the first embodiment includes: a first sprocket body portion 23 including the main body portion 23a, the neck portion 23b, and the engaging head portion 23c as described above; and an embedding portion 24 including the first And the second size region portions 24a and 24b; thereby being fixed to the entire circumference of the core cord portion 11a in a state of being gripped so as to surround the core cord portion 11a of the fastener tape 11 (ie, the core The front side of the tape portion of the cord portion 11a and the back side of the tape are fixed to the front surface of the flat tape and the back surface of the tape in the side edge portion of the tape of the fastener tape 11. That is, the first sprocket main body portion 23 and the embedded portion 24 are gripped by sandwiching the fastener tape 11. Further, in the present invention, the first sprocket main body portion 23 and the embedded portion 24 of the first sprocket portion 21 can also be oriented at least a part of the core cord portion 11a of the fastener tape 11 toward the back side of the tape. The state in which the front side is folded in is attached to the circumferential surface of the core cord portion 11a.

The second sprocket portion 22 of the first embodiment is disposed on the upper surface side of the first sprocket main body portion 23 of the first sprocket portion 21, and is in a state of covering and embedding the embedded portion 24 of the first sprocket portion 21. It is integrated with the first sprocket portion 21. The second sprocket portion 22 is formed in a shape different from that of the first sprocket portion 21 .

Specifically, the second sprocket portion 22 includes a base portion 22a that is fixed to the front surface of the tape of the fastener tape 11 (that is, a flat tape front side and a core tape portion 11a tape tape in the tape side edge portion). And a sprocket head 22b extending from the base portion 22a in the tape width direction so as to protrude from the opposite side edges of the tape from the fastener tape 11.

The base portion 22a of the second sprocket portion 22 is formed in a substantially rectangular parallelepiped shape. Further, as shown in Fig. 3, the dimension of the length direction of the tape in the end portion of the base portion 22a in contact with the fastener tape 11 is substantially fixed throughout the tape width direction of the base portion 22a, thereby ensuring that the base portion 22a is relatively fixed. The fixing strength of the zipper tape 11 is.

The sprocket head 22b of the second sprocket portion 22 is formed in a substantially triangular shape in which the dimension in the longitudinal direction of the tape decreases toward the front end of the sprocket head 22b. Further, the element head portion 22b extends in the longitudinal direction of the tape with respect to the neck portion 23b of the first element tooth portion 21.

Further, when the first sprocket portion 21 of the fastener element 20 of the meshing engagement is engaged with the first sprocket portion 21 of each of the fastener elements 20 to mesh the left and right element rows 12, As shown in Fig. 1, the meshing target is interposed between the second element portions 22 of the fastener element 20 adjacent to each other in the longitudinal direction of the tape, and has the sprocket head 22b of the second element portion 22. The shape and size of the side surface of the sprocket contact with the second element portion 22 of the meshing object.

The sprocket head 22b of the second sprocket portion 22 is formed as described above, whereby the sprocket head 22b of each of the fastener elements 20 can be covered from the upper surface side when the left and right sprocket rows 12 are engaged. The meshing head portion 23c of the first sprocket portion 21 of the meshing target, whereby the sliding fastener 1 is locked, and the sliding fastener 1 is viewed from the front side of the tape, the second sprocket portion can be utilized. 22 covers the first sprocket portion 21 having a color different from that of the second sprocket portion 22. Accordingly, when the slide fastener 1 is closed, the color of the second element portion 22 can be mainly exposed on the front side of the tape.

Further, when the left and right element rows 12 are engaged, the engaging head portion 23c of the first element portion 21 of each of the fastener elements 20 is fitted into the neck portion 23b of the first element portion 21 of the meshing object, thereby being formed in The gap between the left and right first sprocket portions 21 is extremely small. Therefore, when the slide fastener 1 is closed and the slide fastener 1 is viewed from the back side of the tape, the color and the first chain are hardly seen from the gap formed between the left and right first fastener portions 21. The second element portion 22 is different from the tooth portion 21. Therefore, the color of the first sprocket portion 21 can be mainly exposed on the back side of the tape.

Further, as shown in FIG. 5, the embedded portion 24 of the first element portion 21 is embedded in the base portion 22a and the element head portion 22b of the second element portion 22 so as to be covered by the second element portion 22. . In addition, the neck portion 23b of the first sprocket portion 21 is raised in the front direction of the tape (the second tape surface direction) from the main body portion 23a of the first sprocket portion 21 and the meshing head portion 23c. The neck portion 23b of the one sprocket portion 21 is not buried by the second sprocket portion 22. In other words, the portion of the second sprocket portion 22 corresponding to the neck portion 23b of the first sprocket portion 21 (especially in the tape width direction and the position from the step portion 23d in the first sprocket portion 21 to The portion corresponding to the region where the position of the core cord portion 11a of the fastener tape 11 is reached has a concave shape.

In the first embodiment, the buried portion 24 of the first element portion 21 is buried as described above. In the second sprocket portion 22, the joint strength between the first sprocket portion 21 and the second sprocket portion 22 can be improved.

In particular, the embedded portion 24 of the first sprocket portion 21 is formed to protrude from the first sprocket body portion 23 of the first sprocket portion 21 toward the front side of the tape. Therefore, when the embedded portion 24 is embedded in the second sprocket portion 22, the first sprocket portion 21 and the first sprocket portion 21 are maintained when a force in the tape longitudinal direction or the tape width direction is applied to the fastener element 20. The joint strength of the joined state of the sprocket portion 22.

Further, the embedded portion 24 of the first sprocket portion 21 includes the first size region portion 24a and the second size region portion 24b having different sizes in the longitudinal direction of the tape, and is in the first size region portion 24a and the second size region. Since the segment portion 24c is formed between the portions 24b, the joint strength of the fastener elements 20 with respect to the force (especially the lateral tensile force) in the width direction of the tape can be greatly improved.

Further, as described above, the embedded portion 24 of the first sprocket portion 21 includes the first accommodating recess 25a formed on the inner side surface side and the second accommodating recess 25b formed on the outer side surface side. Further, the second housing recess 25b is also formed by the step portion 23d of the first element body portion 23.

In a state in which one of the second element portions 22 is accommodated in the first and second housing recesses 25b formed in the first sprocket portion 21, the embedded portion 24 of the first element portion 21 is buried in the second portion. In the sprocket portion 22, the joint strength between the first and second sprocket portions 21, 22 of the fastener element 20 of the force (for example, the upper thrust) in the forward and backward direction of the tape can be improved.

As described above, in the fastener element 20 of the first embodiment, the joint strength between the first sprocket portion 21 and the second sprocket portion 22 is greatly improved, so that the first and second sprocket portions can be made. The breakage of the zipper elements 20 caused by the separation of 21, 22 is difficult to produce.

Next, a method of manufacturing the above-described chain belt 10 of the first embodiment will be described.

Here, FIG. 11 is a cross-sectional view showing the arrangement of the mold in the first molding step of injection molding the first sprocket portion 21. Fig. 12 is a cross-sectional view showing the arrangement of the molds in the second molding step of injection molding the second element portions 22.

First, a first molding step of ejecting the first sprocket portion 21 of the molded fastener element 20 along the side edge of the tape to the fastener tape 11 having the core string portion 11a is performed.

In the first molding step, the first mold 31 for molding the first sprocket portion 21 is prepared. As shown in Fig. 11, the first mold 31 includes a lower mold 31a which serves as a fixed mold, and an upper mold 31b which is movable in a direction in which the lower mold 31a approaches or leaves (the front and back directions of the cloth). The first and second slider cores 31c and 31d are movable in the tape width direction orthogonal to the upper mold 31b and the lower mold 31a in the direction in which the lower mold 31a is close to or away from the lower mold 31a.

The cavity 31a of the first die 31 is formed with a cavity space mainly for molding the first sprocket body portion 23 of the first sprocket portion 21, and a gate 33 for introducing molten resin into the cavity space is formed. . A cavity space mainly for molding the embedded portion 24 of the first sprocket portion 21 is formed in the upper mold 31b of the first mold 31.

The first slider core 31c has a shape corresponding to the first housing recess 25a formed in the embedded portion 24 of the first sprocket portion 21, and is disposed to advance and retreat in the cavity space of the upper mold 31b and the lower mold 31a. The second slider core 31d has a shape corresponding to the first housing recessed portion 25b formed in the first sprocket main body portion 23 and the embedded portion 24 of the first sprocket portion 21, and is disposed to be movable with respect to the upper mold 31b and the lower mold. 31a's cavity space advances and retreats.

When the first molding step 31 is used to perform the first molding step, the fastener tape 11 is interposed between the upper mold 31b and the lower mold 31a, and the core cord portion 11a of the fastener tape 11 is placed on the upper mold. 31b and a specific position in the cavity space of the lower mold 31a, and the upper mold 31b is in close contact with the lower mold 31a. Further, the first and second slider cores 31c and 31d are moved and held so as to partially protrude into a specific position in the cavity space of the upper mold 31b and the lower mold 31a.

Thereafter, the molten resin colored in the first color is emitted into the cavity spaces of the upper mold 31b and the lower mold 31a via the gate 33, thereby forming the above-described specific shape on the side edge portion of the tape of the fastener tape 11. The first sprocket portion 21. Then, after the injection molding of the first sprocket portion 21 is completed, the fastener tape 11 on which the first sprocket portion 21 is formed is taken out from the first mold 31.

Next, the zipper tape 11 on which the first sprocket portion 21 is formed is ejected to form a zipper chain. The second forming step of the second sprocket portion 22 of the tooth 20.

In the second molding step, the second mold 32 for molding the second sprocket portion 22 is prepared. As shown in Fig. 12, the second mold 32 includes a fixed mold lower mold 32a and a movable mold upper mold 32b which is movable in a direction (front and back direction) of the lower mold 32a.

The accommodating space for the first sprocket main body portion 23 for accommodating the first sprocket portion 21 formed in the first molding step is formed in the lower mold 32a of the second mold 32. The mold 32b for forming the second sprocket portion 22 is formed in the upper mold 32b of the second mold 32, and a gate 34 for introducing molten resin into the cavity space is formed.

When the second molding step is performed using the second mold 32, the first sprocket main portion 23 of the first sprocket portion 21 of the fastener tape 11 is accommodated in the accommodating space of the lower mold 32a. The fastener tape 11 is sandwiched between the die 32b and the lower die 32a, and the upper die 32b is brought into close contact with the lower die 32a.

Thereafter, the molten resin colored in the second color is emitted into the cavity space of the upper mold 32b via the gate 34, whereby the second sprocket having the specific shape is formed on the side edge portion of the tape of the fastener tape 11. In the portion 22, the second sprocket portion 22 and the first sprocket portion 21 are integrally molded. Then, after the injection molding of the second sprocket portion 22 is completed, the fastener tape 11 on which the fastener elements 20 are formed is taken out from the second mold 32.

The chain belt 10 of the first embodiment is stably produced by performing the first molding step and the second molding step as described above. In this case, as described above, in the chain belt 10 of the first embodiment, the meshing head portion 23c and the neck portion 23b constituting the meshing portion are formed only in the first sprocket portion 21, and the second sprocket portion 22 is not formed. The engaging head portion 23c and the neck portion 23b of the engaging portion are formed.

Therefore, when the second molding step is performed, the second sprocket portion 22 is injection-molded in a state where the position of the second mold 32 is slightly shifted with respect to the fastener tape 11, and the first and second sprocket portions 21, The relative positions of the 22 pieces are shifted, and the ease of meshing, the meshing strength, and the slidability of the slider 5 can be made to the left and right fastener elements 20 when the sliding type fastener 1 is formed. The effect of the inhibition is less.

Further, in the second molding step, the alignment of the second mold 32 can be performed inaccurately. Therefore, the second element portion 22 can be efficiently formed, and as a result, productivity can be improved or the manufacturing cost can be improved. Reduced.

Further, the chain belt 10 of the present embodiment 1 manufactured as described above is combined in groups of two, the slider 5 is mounted on the element row 12 of the group of chain belts 10, and a set of chain belts 10 is attached. A stopper 6 and a detachable insert 7 are formed, whereby the sliding fastener 1 shown in Fig. 1 is produced.

The slide fastener 1 of the first embodiment manufactured in this manner can make the first color of the first sprocket portion 21 different from the second color of the second sprocket portion 22, thereby improving the sliding. The decorativeness of the buckle member 1 further improves the decorativeness of the article (such as the article to be attached) of the garment or the like to which the sliding fastener 1 of the first embodiment is attached.

Further, in the fastener tape 10 of the first embodiment, the first sprocket portion 21 of the fastener element 20 itself surrounds and grips the core cord portion 11a of the fastener tape 11, and therefore, the fastener element 20 is opposed to the zipper cloth. The fixing strength of the belt 11 is improved. In addition, each of the fastener elements 20 is formed by integrating the first element portion 21 and the second element portion 22 in a state in which the embedded portion 24 of the first element portion 21 is embedded in the second element portion 22 . Therefore, as described above, the joint strength between the first sprocket portion 21 and the second sprocket portion 22 is greatly improved.

Therefore, the sliding type fastener 1 of the first embodiment can reduce the breakage of the fastener element 20 or the self-zipper cloth even if the slide member 5 is repeatedly slid or the fastener element 20 is subjected to an external force by collision with other members or the like. The belt 11 is detached, so that the slide fastener 1 can be used for a long period of time and stably.

In the present invention, the accommodating recesses such as the first and second accommodating recesses 25a and 25b which are formed in the embedded portion 24 of the first sprocket portion 21 and accommodate one of the second sprocket portions 22 can be arbitrarily changed. The position of the zipper sprocket.

In the first embodiment, the first housing recess 25a is provided on the inner surface of the first size region 24a, and the second housing recess is provided on the outer surface of the second dimension region 24b. For example, as shown in FIG. 13 to FIG. 15, the first sprocket portion 41 of the fastener element of the first embodiment can be placed close to the first sprocket portion 41 of the first sprocket portion 41. The first housing recess 45a is provided in each of the front side surface portion and the rear side surface portion of the region portion 44a, and the second housing recess portion 45b is provided in each of the front side surface portion and the rear side surface portion of the second dimension region portion 44b of the embedded portion 44.

In this case, the front and rear first housing recesses 45a are located on the inner side of the first size region 44a at a position adjacent to the front surface of the fastener tape 11 in the front side surface portion and the rear side surface portion of the first size region 44a. It is formed by being recessed in a rectangular shape. Further, the second housing recessed portion 45b is recessed toward the inner side of the second size region portion 44b at a position adjacent to the front surface of the tape of the fastener tape 11 in the entire front side surface portion and the rear side surface portion of the second size region portion 44b. And formed.

In other words, the size of the embedding portion 44 in the region in which the first housing recess 45a is disposed is smaller than the area of the first size region 44a above the first housing recess 45a (the second surface side). The size of the front and rear direction. Moreover, the size of the embedding portion 44 in the region in which the second housing recess 45b is disposed is smaller than the area of the second dimension region 44b above the second housing recess 45b (the second surface side). The size of the direction.

The fastener element of the modification in which the first and second housing recesses 45a and 45b are formed is similar to the fastener element 20 of the first embodiment, and the first and second housing recesses of the first element portion 41 are formed. In a state in which one of the second sprocket portions is accommodated in the 45a and 45b, the embedded portion 44 of the first sprocket portion 41 is embedded in the second sprocket portion. Therefore, the force in the direction of the front and back of the tape can be effectively increased ( For example, the upper thrust) is the joint strength of the zipper teeth.

Therefore, in the same manner as in the above-described first embodiment, the sliding fastener having the fastener element of the modified example improves the fixing strength of the fastener element with respect to the fastener tape 11, and greatly improves the first element portion 41 and the first element portion 41. 2 joint strength between the chain teeth. Therefore, it is difficult to cause breakage or peeling of the fastener element, and the sliding type fastener can be used stably for a long period of time.

Furthermore, the zipper tape 11 of the sliding type fastener of the above-mentioned Embodiment 1 and its modification Although it is formed in a belt shape by weaving or knitting, for example, it may be formed in advance at the position of the formed fastener element of the fastener element mounting portion of the fastener tape 11 (particularly, the position at which the first element portions 21 and 41 are formed). A through hole penetrating from the front surface of the tape to the back surface of the tape is formed, and a connecting portion that connects the first element body portions 23 and 43 of the first element portions 21 and 41 to the embedded portions 24 and 44 is formed in the through hole.

By connecting the first sprocket body portions 23 and 43 and the embedding portions 24 and 44 of the first sprocket portions 21 and 41 via the connecting portion formed in the through hole, the zipper element can be more effectively improved (especially It is the fixing strength of the first sprocket portions 21, 41) with respect to the fastener tape 11.

Further, in the present invention, the first sprocket portion 21a may be used in the first sprocket portion 21, 41 or the second sprocket portion 22 to be melted by the heat of the molten resin during the injection molding, and the first sprocket may be used. The fastener tape 11 is formed by welding the welded portions of the portions 21, 41 or the second sprocket portion 22. By using such a weld line for a part of the core cord portion 11a, the fixing strength of the fastener element with respect to the fastener tape 11 can be more effectively improved.

Example 2

Fig. 16 is a perspective view showing the fastener element of the fastener tape of the second embodiment. Fig. 17 is a perspective view showing the first element tooth portion of the fastener element.

In the chain belt of the second embodiment, the embedded portion 54 of the first sprocket portion 51 of the fastener element 50 has a protruding portion 56 having an upper surface on the second sprocket portion 52 of the fastener element 50. The upper surface is exposed and forms the same plane as the upper surface of the second element tooth portion 52. Further, in the chain belt of the second embodiment, the portion other than the portion related to the protruding portion 56 of the first sprocket portion 51 is configured in the same manner as the chain belt 10 of the first embodiment.

Therefore, in the chain belt of the second embodiment and the chain belts of the third to fifth embodiments, the components and members having substantially the same configuration as the sliding fastener 10 of the first embodiment are provided. The same reference numerals are used for the explanation, and the description thereof will be omitted.

The fastener element 50 of the second embodiment includes a first sprocket portion 51 formed by the first injection molding and exhibiting a first color, and a second sprocket portion 52 by the first Chain teeth The portion 51 is formed by the second injection molding after molding, and exhibits a second color.

Further, the first sprocket portion 51 of the second embodiment includes a first sprocket main portion 53 which is disposed on the back side of the tape of the fastener tape, and which is taped from the opposite side of the tape of the zipper tape. The width direction is protruded; and the embedded portion 54 is formed integrally with the first sprocket body portion 53. In addition, the first sprocket main body portion 53 of the second embodiment is configured in the same manner as the first sprocket main body portion 23 of the fastener element 20 of the first embodiment.

The embedding portion 54 of the second embodiment includes a first size region portion 54a disposed on the inner side of the tape, and a second size region portion 54b extending from the first size region portion 54a toward the meshing head portion 53c, and The dimension in the longitudinal direction of the tape is smaller than the first size region portion 54a, and the protruding portion 56 is protruded from the upper surface of the first and second size region portions 54a and 54b.

In addition, the first and second size region portions 54a and 54b of the embedded portion 54 are configured in the same manner as the first and second size region portions 24a and 24b of the embedded portion 24 in the first embodiment.

The protruding portion 56 of the embedded portion 54 protrudes in a rectangular parallelepiped shape in the central portion of the upper surface of the first and second size region portions 54a and 54b in the longitudinal direction of the tape. Further, the protruding height of the protruding portion 56 from the upper surface of the first and second size region portions 54a and 54b (the dimension in the front and back directions of the tape) is formed by injection molding the second element portion 52 to form a fastener element. At 50 o'clock, the upper surface of the protruding portion 56 is set to be flush with the upper surface of the base portion 52a of the second sprocket portion 52.

The second sprocket portion 52 of the second embodiment is disposed on the upper surface side of the first sprocket main portion 53 of the first sprocket portion 51, and covers and embeds the embedding portion 54 of the first sprocket portion 51. 1 and the second size region portions 54a and 54b, and the upper surface of the protruding portion 56 of the embedded portion 54 is exposed to the outside to be integrated with the first sprocket portion 51.

Further, the second sprocket portion 52 includes a base portion 52a fixed to the front surface of the tape of the zipper tape, and a sprocket head portion 52b protruding from the base portion by the opposite side edges of the tape from the zipper tape 52a extends in the width direction of the tape.

The fastener tape of the second embodiment having the fastener element 50 as described above causes the color of the first sprocket portion 51 to be different from the color of the second spur portion 52, and one portion of the first sprocket portion 51 is used as Since the pattern is exposed on the upper surface of the base portion 52a of the second sprocket portion 52, the decorative property of the slide-type fastening member and the fastener-attached article can be greatly improved.

Further, in the chain belt of the second embodiment, the protruding portion 56 is disposed on the first sprocket portion 51 of the fastener element 50, and the protruding portion 56 is such that the upper surface of the protruding portion 56 is on the second sprocket portion 52. The upper surface is exposed and embedded in the second sprocket portion 52.

Therefore, the joint strength between the first sprocket portion 51 and the second sprocket portion 52 can be more effectively improved as in the case of the above-described first embodiment or in the case of the above-described first embodiment. Therefore, the sliding type fastener formed using the chain belt of the second embodiment can be used for a long period of time and stably. Further, the shape of the protruding portion 56 is not particularly limited and can be arbitrarily set.

Example 3

Fig. 18 is a plan view showing a part of the chain belt of the third embodiment in an enlarged manner. Fig. 19 is a partially enlarged plan view showing a portion of a slide fastener formed using the fastener tape.

The second sprocket portion 62 of the fastener element 60 of the fastener tape 10 of the third embodiment is different from the second spur portion 22 of the fastener element 20 of the first embodiment, and the second sprocket portion 62 is different. The portion other than the outer shape is configured in the same manner as the chain belt 10 of the first embodiment described above.

The second sprocket portion 62 of the third embodiment is disposed on the upper surface side of the first sprocket main portion 63 of the first sprocket portion 61, and covers and embeds the embedded portion of the first sprocket portion 61. The first sprocket portion 61 is integrated. Further, the second sprocket portion 62 is configured to be fixed to the front surface of the tape of the fastener tape 11, and protrudes from the opposite side edge of the tape of the fastener tape 11, and has a rectangular shape in plan view.

The second sprocket portion 62 includes a base portion 62a fixed to the front surface of the zipper tape 11 and a sprocket head 62b protruding from the base portion by the opposite side edges of the tape from the zipper tape. 62a extends in the width direction of the tape.

In this case, the sprocket head 62b of the second sprocket portion 62 extends in the longitudinal direction of the tape with respect to the neck portion 63b of the first sprocket portion 61. Further, when the first sprocket portion 61 of the fastener element 60 of the meshing target meshes with the first sprocket portion 61 of each of the fastener elements 60 to engage the left and right element rows, the sprocket head 62b is as shown in FIG. As shown, the span and the meshing object are on the length of the tape. The second sprocket portions 62 (especially the sprocket heads 62b) of the mutually adjacent fastener elements 60 are formed in contact with each other.

By forming the second sprocket portion 62 as described above, when the left and right sprocket rows are engaged, the sprocket rows in the meshing state can be kept linear, and the sprocket row is difficult to be in the tape width direction. Bend up.

In the sliding type fastener of the third embodiment, the first color of the first sprocket portion 61 and the second color of the second sprocket portion 62 may be different. Improve the decorativeness of the sliding fasteners and the fasteners.

Further, the fixing strength of the fastener element 60 with respect to the fastener tape 11 and the joint strength between the first sprocket portion 61 and the second sprocket portion 62 are greatly improved, so that the sliding type can be used stably for a long period of time. Fastening pieces.

Example 4

Fig. 20 is a plan view showing a part of the chain belt of the fourth embodiment in an enlarged manner, and Fig. 21 is a cross-sectional view taken along the line XXI-XXI shown in Fig. 20.

The chain belt 10b of the fourth embodiment is formed by forming a plurality of synthetic resin fastener elements 70 by performing two injection moldings on the side edge portion of the belt including the core cord portion 11a of the fastener tape 11.

The fastener element 70 of the fourth embodiment includes a first sprocket portion 71 which is formed by the first injection molding and which exhibits a first color and a second spur portion 72 which is The first sprocket portion 71 is formed by the second injection molding after molding, and exhibits a second color.

The first and second sprocket portions 71 and 72 of the fourth embodiment seem to fix the first sprocket portion 71 to the back surface of the tape (the first tape surface) of the fastener tape 11, and the second sprocket portion 72 is fixed to the front surface of the tape of the fastener tape 11 (the second tape surface), and the portions protruding from the opposite side edges of the tape of the fastener tape 11 are connected to each other, but actually have the following shapes.

The first sprocket portion 71 of the fourth embodiment includes a first sprocket body portion 73 disposed on the back side of the tape of the fastener tape 11, and the tape width from the opposite side of the tape of the zipper tape 11 The directional portion 74 and the embedded portion 74 are integrally formed with the first sprocket body portion 73.

Further, the embedding portion 74 of the fourth embodiment is configured similarly to the embedding portion 24 disposed in the first sprocket portion 21 in the first embodiment, and includes a first size region portion 74a disposed on the inner side of the tape. And the zipper tape 11 and the second size region 74b extend from the first size region 74a toward the meshing head side, and are integrated with the first sprocket body 73, and the tape length The size of the direction is smaller than the first size area portion 74a.

The first sprocket body portion 73 of the first sprocket portion 71 in the fourth embodiment includes a main body portion that is fixed to the back surface of the tape of the fastener tape 11, and has a substantially rectangular shape in a bottom view; The body is continuously formed, and the zipper tape 11 protrudes in the width direction of the tape and has a shape narrowed in such a manner that the size of the tape is tapered; the inflated meshing head is further extended from the neck to the tape. It protrudes in the width direction and protrudes in the longitudinal direction of the tape to have a substantially elliptical shape when viewed from the top; and a pair of shoulders extending from the main body and the neck toward the outside of the tape. Further, an insertion recessed portion into which the shoulder portion of the first sprocket portion 71 of the object to be engaged is fitted is formed at the end portion on the upper surface side of the end portion before the meshing head portion.

The main body portion of the fourth embodiment is fixed to the back surface of the tape of the flat tape portion of the side edge portion of the tape of the fastener tape 11, and the circumferential surface of the back side of the tape of the core portion 11a. Therefore, the first sprocket portion 71 of the fourth embodiment includes the first sprocket body portion 73 and the embedded portion 74 including the first and second size region portions 74a and 74b to surround the fastener tape 11 The core cord portion 11a is fixed to the core cord portion 11a in a state of being gripped, and is fixed to the flat front surface of the tape and the back surface of the tape in the side edge portion of the tape of the fastener tape 11.

The second sprocket portion 72 of the fourth embodiment is disposed on the upper surface side of the first sprocket main portion 73 of the first sprocket portion 71, and is in a state of covering and embedding the embedded portion 74 of the first sprocket portion 71. It is integrated with the first sprocket portion 71. The outer shape of the second sprocket portion 72 is formed outside the first sprocket portion 71, and is configured to be positively back-symmetrical with respect to the center surface of the fastener tape 11 in the front-rear direction.

Specifically, the second sprocket portion 72 includes a main body portion 72a that is fixed to the zipper tape 11 The front surface of the cloth belt is substantially rectangular in plan view; the neck portion 72b is continuously formed from the main body portion 72a, protrudes from the fastener tape 11 in the width direction of the tape, and has a size that is tapered in the longitudinal direction of the tape. a narrow shape; an inflated engaging head portion 72c that protrudes further from the neck portion 72b in the width direction of the tape, and protrudes in a longitudinal direction of the tape in a plan view to have a substantially elliptical shape; and a pair of shoulder portions 72d, The main body portion 72a and the neck portion 72b extend in a thin plate shape from the outside of the tape. Further, the end portion on the lower surface side of the end portion before the engaging head portion 72c is formed with the fitting recess portion 72e into which the shoulder portion 72d of the second element portion 72 to be engaged is fitted.

The sliding fastener formed by the fastener tape 10b of the fourth embodiment as described above can make the first color of the first sprocket 71 and the second color of the second sprocket 72 different. It can greatly improve the decorativeness of the sliding fasteners and the fasteners.

Further, when the left and right element rows are engaged, the engaging head portions 72c of the first and second sprocket portions 71 and 72 of the respective fastener elements 70 are fitted to the first and second spur portions 71 and 72 of the meshing target. The neck portion 72b is formed such that the gap formed between the right and left fastener elements 70 becomes extremely small. Therefore, when the slide fastener is closed, the color of the fastener element 70 exposed on the opposite tape side is hardly seen through the gap formed between the left and right fastener elements 70.

Further, the fixing strength of the fastener element 70 with respect to the fastener tape 11 and the bonding strength between the first sprocket portion 71 and the second sprocket portion 72 are greatly improved as in the case of the first embodiment described above. Therefore, the sliding type fastener can be used for a long time and stably.

Further, in the chain belt 10b of the fourth embodiment, as described above, the first sprocket portion 71 and the second sprocket portion 72 of the fastener element 70 form the meshing head portion 72c and the neck portion 72b, and the first The outer shape of the sprocket portion 71 is configured to be positively symmetrical with respect to the outer shape of the second sprocket portion 72. Therefore, in the sliding type fastening member constructed using the chain belt 10b, a large engagement strength can be stably obtained.

In particular, the sliding type fastening member of the sliding member of the fourth embodiment has the same front side as the fastener element 70 of the back side of the tape, and is therefore preferably used on one side. The other side is designed with different double-faced clothes.

Example 5

Fig. 22 is a plan view showing a part of the chain belt of the fifth embodiment in an enlarged manner. Fig. 23 is a plan view showing the first element tooth portion of the fastener element.

The fastener tape 10c of the fifth embodiment is formed by forming a plurality of synthetic resin fastener elements 80 by performing two injection moldings on the side edge portion of the tape including the core cord portion 11a of the fastener tape 11.

The fastener element 80 of the fifth embodiment includes a first sprocket portion 81 which is formed by the first injection molding and which exhibits a first color and a second spur portion 82 which is The first sprocket portion 81 is formed by the second injection molding after molding, and exhibits a second color.

The first sprocket portion 81 of the fifth embodiment includes a first sprocket body portion 83 which is disposed on the back side of the tape of the fastener tape 11, and which is taped from the opposite side of the tape of the zipper tape 11. The width direction is protruded; and the embedded portion 84 is formed integrally with the first sprocket body portion 83.

Further, the embedding portion 84 of the fifth embodiment is different from the first sprocket main portion 83 in the embedding portion 24 of the first sprocket portion 21 in the first embodiment, but the embedding portion is different from the first sprocket main portion 83. The shape of 84 is the same as that of the embedding portion 24 in the above-described first embodiment.

That is, the embedding portion 84 of the fifth embodiment includes the first size region portion 84a which is disposed on the inner side of the tape and is fixed to the fastener tape 11 and the second size region 84b from the first size region. The portion 84a extends toward the meshing head portion 83c, and is integrated with the first sprocket body portion 83, and has a smaller dimension in the longitudinal direction of the tape than the first size region portion 84a, and is formed in a substantially T-shape in plan view. .

Further, as shown in FIG. 23, the embedding portion 84 of the fifth embodiment is more biased toward the one side than the central portion of the first sprocket main portion 83 in the longitudinal direction of the tape with respect to the first sprocket main portion 83. It is disposed in the front side of the embodiment 5). In addition, the embedded portion 84 of the first sprocket portion 81 is biased to the other direction side with respect to the central portion of the second sprocket portion 82 in the longitudinal direction of the tape in the second sprocket portion 82 (in the fifth embodiment) Configured on the back side).

The first sprocket body portion 83 of the first sprocket portion 81 in the fifth embodiment includes: a main body portion 83a, which is fixed to the back surface of the tape of the zipper tape 11, and has a substantially rectangular shape in a bottom view; a neck portion 83b which is continuously formed from the main body portion 83a, protrudes from the zipper tape 11 in the width direction of the tape and has a cloth a shape in which the dimension in the longitudinal direction is narrowed; and an enlarged engaging head portion 83c which protrudes further from the neck portion 83b in the width direction of the tape and protrudes in the longitudinal direction of the tape when viewed from the bottom. Roughly elliptical.

The main body portion 83a of the fifth embodiment is fixed to the back surface of the tape of the flat tape portion of the side edge portion of the tape of the fastener tape 11, and the circumferential surface of the back side of the tape of the core portion 11a. Therefore, the first sprocket portion 81 of the fifth embodiment includes the first sprocket main body portion 83 and the embedded portion 84 including the first and second size region portions 84b so as to surround the core rope of the zipper tape 11. The portion 11a is fixed to the core cord portion 11a in a state of being grasped, and is fixed to the flat front surface of the tape and the back surface of the tape in the side edge portion of the tape of the fastener tape 11.

The second sprocket portion 82 of the fifth embodiment is disposed on the upper surface side of the first sprocket main portion 83 of the first sprocket portion 81, and is in a state of covering and embedding the embedded portion 84 of the first sprocket portion 81. It is integrated with the first sprocket portion 81. As shown in FIG. 22, the second sprocket portion 82 is disposed on one side in a specific direction with respect to the first sprocket main portion 83 of the first sprocket portion 81 (the front side in the fifth embodiment) The second sprocket portion 82 has a shape that is symmetrical with respect to the center surface of the zipper tape 11 in the front-back direction.

Specifically, the second sprocket portion 82 includes a main body portion 82a that is fixed to the front surface of the zipper tape 11 and has a substantially rectangular shape in plan view, and a neck portion 82b that is continuously formed from the main body portion 82a. The zipper tape 11 protrudes in the width direction of the tape and has a shape that is narrowed in such a manner that the size of the tape is tapered; and an enlarged engaging head portion 82c that protrudes further from the neck portion 82b toward the tape width direction. Moreover, it protrudes in the longitudinal direction of the tape in a plan view and has a substantially elliptical shape.

The slide fastener formed of the fastener tape 10c of the fifth embodiment as described above can make the first color of the first sprocket portion 81 and the second color of the second sprocket portion 82 different. It can greatly improve the decorativeness of the sliding fasteners and the fasteners.

Further, the fixing strength of the fastener element 80 with respect to the fastener tape 11 and the bonding strength between the first sprocket portion 81 and the second sprocket portion 82 are greatly improved as in the case of the first embodiment described above. Therefore, the sliding type fastener can be used for a long time and stably.

Further, in the chain belt 10c of the fifth embodiment, as described above, the first sprocket portion 81 and the second sprocket portion 82 of the fastener element 80 are formed with the engaging head portions 83c, 82c and the neck portion 83b, 82b, therefore, in the sliding type fastener formed using the chain belt 10c, a large engagement strength can be stably obtained.

Further, in the embedding portions 24, 44, 54, 74, and 84 of the above-described respective embodiments, when the embedding portion is viewed in a cross section in a direction orthogonal to the tape surface of the fastener tape 11, the cross-sectional shape is The substantially circular core cord portion 11a is gripped and fixed to the circumferential surface of the core cord portion 11a. However, in the present invention, the core cord portion 11a of the fastener tape 11 is grasped by the embedding portion, not only The embedded portion is fixed to the entire circumference of the core cord portion 11a so as to surround the entire circumference of the core cord portion 11a of the fastener tape 11, and includes a back surface of the core cord portion 11a so as to cover one of the entire circumference of the core cord portion 11a. The lateral side of the side belt is folded in, whereby the core rope portion 11a is gripped to be fixed to a portion of the core rope portion 11a.

1‧‧‧Sliding fasteners

5‧‧‧Sliding parts

5a‧‧‧Slider body

5b‧‧‧ pull film

6‧‧‧stop (1st stop)

7‧‧‧ separable inserts

7a‧‧‧Latch

7b‧‧‧ pins

7c‧‧‧Opening cylinder

10‧‧‧Chain

11‧‧‧ zipper tape

11a‧‧‧core cord

11b‧‧‧ reinforcing film

12‧‧‧Chain row

20‧‧‧zipper teeth

Claims (9)

A fastener tape characterized in that the tether belt (10, 10a, 10b, 10c) includes a fastener tape (11) having a core cord portion (11a) disposed along a side edge of the tape, and is fixed to the above a plurality of synthetic resin zipper elements (20, 50, 60, 70, 80) of the core rope portion (11a), and the fastener elements (20, 50, 60, 70, 80) include injection molding on the zipper The first sprocket portions (21, 41, 51, 61, 71, 81) of the tape (11) and the first sprocket portions (21, 41, 51, 61, 71, 81) by injection molding The second sprocket portions (22, 52, 62, 72, 82) are integrated; and the first sprocket portions (21, 41, 51, 61, 71, 81) integrally form the first sprocket body portion ( 23, 43, 53, 63, 73, 83) and the embedded portion (24, 44, 54, 74, 84), the first sprocket body portion (23, 43, 53, 63, 73, 83) is solid a first tape surface of the zipper tape (11), and protruding from the zipper tape (11) in the tape width direction, the burying portion (24, 44, 54, 74, 84) being fixed to the above The second tape surface of the fastener tape (11) opposite to the first tape surface is embedded in the second element (22, 52, 62, 72, 8) 2) inside; at least a part of the core cord portion (11a) of the fastener tape (11) is composed of the first sprocket body portion (23, 43, 53, 63, 73, 83) and the embedded portion (24) 44, 54, 74, 84); the second sprocket (22, 52, 62, 72, 82) covers the embedded portion (24, 44, 54, 74, 84) and is fixed to The second tape surface of the fastener tape (11). The chain belt of claim 1, wherein the first sprocket body portion (23, 43, 53, 63, 73, 83) includes a main body portion (23a, 83a), a neck portion (23b, 63b, 83b), and an enlarged body. The meshing head portions (23c, 53c, 83c) are fixed to the first tape surface of the fastener tape (11), and the neck portions (23b, 63b, 83b) )from The main body portion (23a, 83a) extends toward the outside of the tape and has a shape that is narrowed in the longitudinal direction of the tape. The inflated engaging head portions (23c, 53c, 83c) are from the neck portion (23b, 63b). , 83b) extends in the width direction of the tape. The chain belt of claim 2, wherein the second chain is disposed in the outer peripheral side portion of the embedded portion (24, 44, 54, 74, 84) in a direction rising from the fastener tape (11) The receiving recesses (25a, 25b, 45a, 45b) of one of the tooth portions (22, 52, 62, 72, 82) are formed. The chain belt of claim 3, wherein the housing recess includes a first housing recess (25a) disposed on an outer circumferential side surface of the inner side of the cloth (24, 54, 74, 84), and is disposed in the housing Among the embedded portions (24, 54, 74, 84), the second receiving recesses (25b) of the outer peripheral side portions on the side of the engaging head portions (23c, 53c, 83c) are formed. The chain belt according to any one of claims 2 to 4, wherein the embedded portion (24, 44, 54, 74, 84) includes a first size region portion (24a, 44a, 54a, 74a, 84a) and a second The size region portions (24b, 44b, 54b, 74b, 84b) having a size larger than the neck portion (23b, 63b, the length of the first size region portion (24a, 44a, 54a, 74a, 84a)) 83b) the smallest dimension in the longitudinal direction of the tape, and fixed to the second tape surface of the fastener tape (11), wherein the second size region (24b, 44b, 54b, 74b, 84b) is larger than the above The 1 size region portion (24a, 44a, 54a, 74a, 84a) is disposed on the side of the engaging head portion (23c, 53c, 83c), and the dimension in the longitudinal direction of the tape is smaller than the neck portion (23b, 63b, 83b). The smallest dimension of the length of the cloth. The chain belt according to any one of claims 2 to 4, wherein the embedded portion (24, 44, 54, 74, 84) is the most in the width direction of the tape than the neck portion (23b, 63b, 83b) The narrow portion is further located at a position on the side of the engaging head portion (23c, 53c, 83c) to a position reaching the position of the core cord portion (11a) and the first sprocket body portion (23, 43, 53, 63, 73, 83) Integration. The chain belt according to any one of claims 2 to 4, wherein the second sprocket portion (22, 52, 62) includes a base portion (22a) fixed to the second tape surface of the zipper tape (11). , 52a, 62a), and a sprocket head (22b, 52b, 62b) extending outward from the base (22a, 52a, 62a) toward the tape width direction; and the sprocket head (22b, 52b and 62b) extend more toward the longitudinal direction of the tape than the neck portions (23b, 63b) of the first sprocket portions (21, 51, 61). The chain belt according to any one of claims 2 to 4, wherein the second sprocket portion (72, 82) comprises a main body portion (72a, 82a), a neck portion (72b, 82b), and an inflated meshing head portion. (72c, 82c), the main body portions (72a, 82a) are fixed to the second tape surface of the fastener tape (11), and the neck portions (72b, 82b) are from the main body portions (72a, 82a) ) extending outwardly of the tape in the width direction of the tape, and having a shape narrowed in the longitudinal direction of the tape, the inflated engaging heads (72c, 82c) being taped from the necks (72b, 82b) Extends in the width direction. A method for manufacturing a fastener tape, characterized in that the fastener tape comprises a fastener tape (11) having a core cord portion (11a) disposed along a side edge of the tape, and the above-mentioned fastener tape (11) a plurality of synthetic resin zipper elements (20, 50, 60, 70, 80) on the side edge portion of the tape on the side of the core rope portion (11a), and the above-mentioned fastener elements (20, 50, 60, 70, 80) The first sprocket portion (21, 41, 51, 61, 71, 81) formed by injection molding on the fastener tape (11), and the first sprocket portion (21, 41, 51, 61, 71) (81) After the molding, the second sprocket portion (22, 52, 62, 72, 82) that is injection molded and molded and integrated with the first sprocket portions (21, 41, 51, 61, 71, 81) The manufacturing method includes a first molding step of injection molding the first sprocket portions (21, 41, 51, 61, 71, 81), and the first sprocket portions (21, 41, 51, 61, 71) , 81) comprising a first tape surface fixed to the above-mentioned zipper tape (11) and extending from the above-mentioned zipper tape (11) to the tape width a first sprocket body portion (23, 43, 53, 63, 73, 83) protruding in a direction, and a second tape surface side fixed to the zipper tape (11) and embedded in the second sprocket portion Embedding portions (24, 44, 54, 74, 84) in (22, 52, 62, 72, 82) and gripping at least a portion of the core cord portion (11a) of the fastener tape (11); In the second molding step, the second sprocket portions (22, 52, 62, 72, 82) are injection molded, and the second sprocket portions (22, 52, 62, 72, 82) are formed with the first one described above. The above-mentioned fastener tape (11) of the sprocket portion (21, 41, 51, 61, 71, 81) covers the above-mentioned embedded portion (24, 44, 54, 74, 84), and is fixed to the above-mentioned fastener tape (11). ) the above second cloth surface.