TW201340904A - Waterproof slide fastener and waterproof product - Google Patents

Abstract

This waterproof slide fastener (1, 2) is configured in such a manner that a sheet member (15, 55) is secured to a surface of a space section (14a, 14b), the surface facing one surface of each tape, and the sheet member (15, 55) straddles the left and right waterproof tapes (11). The sheet member (15, 55) has tapered sections (8) at the left and right sheet side edges thereof, and the thickness of the tapered sections (8) in the front-back surface direction of the tapes is gradually reduced toward the outside in the width direction of the tapes. As a result, even if the thickness of the sheet member (15, 55) is increased a certain degree, the difference in height between the one surface of each waterproof tape (11) and the front surface of the sheet member (15, 55) can be reduced. The configuration enables a water stop tape (6) can be firmly adhered to both the one surface of each waterproof tape (11) and the front surface of the sheet member (15, 55), and as a result, the liquid-tight properties of a waterproof product (5) can be improved.

Description

Waterproof zipper and waterproof products

The present invention relates to a waterproof zipper and a waterproof article, and more particularly to a waterproof zipper and a waterproof article comprising a stopper having a waterproof structure capable of effectively preventing liquid from entering.

In the opening and closing portion or the opening portion of the tight-fitting wetsuit or the high-waisted rain boots, in order to prevent the liquid such as water from entering the inside when the opening or closing portion or the opening portion is closed, a waterproof zipper is often used (hereinafter referred to as For waterproof zipper). Here, the term "waterproof" means not only the penetration of water but also the penetration of liquid other than water. Further, the waterproof zipper is not only for preventing the intrusion of liquid but also for preventing airtightness of gas intrusion.

The waterproof zipper usually has a pair of left and right chain belts formed with a chain of teeth on the waterproof cloth including the waterproof layer, and a sliding member slidable along the chain of the fasteners, so that the left and right chain of teeth are engaged to make the left and right The opposite side edges of the waterproof cloth are in close contact with each other, thereby preventing water from penetrating from the front side of the tape to the back side of the tape (or from the back side of the tape to the front side of the tape) via the left and right waterproof tapes. .

In such a waterproof zipper, a stopper is disposed at both ends of the element row, and the sliding range of the slider is restricted by the stopper. Here, in the stoppers disposed at the both end portions of the element row, the stopper on the side where the slider abuts when the left and right element rows are fully opened is defined as the first stop (also referred to as the bottom stop). The stop of the side on which the slider abuts when the left and right chain rows are completely locked is defined as the second stop (also referred to as the upper stop).

In the following description, the vertical direction refers to the longitudinal direction of the fastener tape, and the sliding direction of the sliding member is the same direction. In particular, the direction in which the slider slides is such that the left and right element rows are engaged to lock the slide, and the direction in which the slide is slid is opened so that the left and right fastener elements are separated to open the slide.

The left-right direction refers to the width direction of the tape of the zipper tape, which is parallel to the tape surface of the zipper tape and orthogonal to the longitudinal direction of the tape. Further, the front-rear direction means the front and back directions of the fastener tape orthogonal to the tape surface of the fastener tape, and in particular, the direction in which the slider is disposed on the side of the slider of the fastener tape is reversed. The direction of the side is the rear.

The structure of the first stop (lower stop) which is disposed on the waterproof zipper is disclosed in Japanese Laid-Open Patent Publication No. 2007-215819 (Patent Document 1).

As shown in FIGS. 18 and 19, the water-repellent zipper 70 described in Patent Document 1 includes a pair of left and right chain belts 71 which are attached to the side edge portion of the tape of the waterproof cloth tape 72 by injection molding. a plurality of synthetic resin fastener elements 73; a slider (not shown); and a first stop 74 fixed to the lower end of the left and right chain belts 71; the first stop 74 defines the sliding range of the slider Lower limit position.

The left and right fastener tapes 71 have a space portion which is a region where the fastener elements 73 are not disposed, at both end portions in the longitudinal direction of the waterproof fabric tape 72. Further, on the back side of the tape on the space portion on the lower side of the fastener tape 71, the sheet member 75 is spanned between the left and right waterproof tapes 72 and then welded, and the first stopper 74 covers the sheet member 75. A part of the method is provided on the front and back sides of the waterproof tape 72.

The sheet member 75 of Patent Document 1 is formed of a thermoplastic elastomer or a synthetic rubber on the front surface of the woven base fabric or the nonwoven fabric, or a resin film. The sheet member 75 includes a wide portion 75a having a wide width in the tape width, a narrow portion 75b extending upward from the wide portion 75a and having a narrow width in the tape width, and a front edge and a zipper chain of the narrow portion 75b. The teeth 73 are in contact.

The first stopper 74 of the patent document 1 includes a stopper main body portion 76 that is formed in a substantially rectangular parallelepiped shape on the waterproof tape 72 and the sheet member 75, and a protruding portion 77 that protrudes upward from the stopper main body portion 76, Further, a thermoplastic resin of the same material as the fastener element 73 is formed by injection molding.

Further, the stopper main body portion 76 includes a first half portion (the tape front side half portion) disposed on the tape front side and a second half portion (the tape back side half portion) disposed on the tape back side. The first half and the second half are connected and integrated via a through hole 78 that is bored in the waterproof tape 72 and the sheet member 75.

The protruding portion 77 is attached to the upper belt surface 71 on the side (right side) of the fastener element 73 (first sprocket) adjacent to the first stopper 74, and protrudes upward from the upper surface portion of the stopper main body portion 76. The arrangement is configured to be inserted into the element guide channel of the slider when the slider abuts against the stopper body portion 76. Such a protruding portion 77 is disposed on the front side of the tape and the back side of the tape, and the sliding operation of the slider in the vicinity of the stopper main body portion 76 can be appropriately performed.

In the waterproof zipper 70 of the patent document 1 having the above-described configuration, in the space portion of the fastener tape 71 in which the fastener element 73 is not disposed, the sheet member 75 is placed across the left and right waterproof tape 72. Therefore, it is possible to prevent water from entering in the area of the space portion. In particular, in the waterproof zipper 70 of Patent Document 1, since the upper end edge of the sheet member 75 is in contact with the fastener element 73, the liquid tightness between the fastener element 73 and the first stopper 74 can be ensured with a simple structure.

Further, since the sheet member 75 of Patent Document 1 is fixed across the left and right waterproof tapes 72, even if the left and right fastener tapes 71 are respectively applied with the side pulling force on the outer side in the width direction, The positional relationship of the waterproof tape 72 on the left and right sides of the space portion is maintained, and the left and right fastener elements 73 are prevented from being separated from the lower end side together with the first stopper 74.

Prior technical literature Patent literature

Patent Document 1: Japanese Patent Laid-Open Publication No. 2007-215819

When the waterproof zipper 70 of the patent document 1 is attached to a zipper body such as a tight-fitting diving or a high-waisted rain boot, the front side of the tape of the waterproof tape 72 and the back side of the zipper are often placed. Then or weld.

Moreover, in recent years, in order to more accurately prevent the position of the waterproof zipper 70 from being displaced with respect to the zipper, it is advantageous to exhibit the appearance of attaching the waterproof zipper 70 to the zipper body firmly. The water-repellent tape 72 and the zipper are sewn together by a sewing machine or the like after the front side of the tape of the waterproof tape 72 is attached or welded to the back side of the zipper. In this case, the sheet member 75 is bonded to the left and right waterproof cloth tape 72 on the lower end side of the waterproof zipper 70, so that the sheet member 75 and the waterproof cloth tape 72 are sewn together in the zipper. Physically.

When the waterproof zipper 70 and the zipper are sewn together, the squeezing needle (sewing needle) pierces the waterproof tape 72, the sheet member 75, and the zipper, so that after sewing The waterproof cloth tape 72, the sheet member 75, and the zipper are placed on the body, and the pinhole through which the sewing thread is inserted passes through the tape in the forward and reverse directions.

However, if the waterproof tape 22, the sheet member 75, and the zipper are inserted through the pinhole, the water may pass through the pinhole and the sewing thread inserted into the pinhole. The zipper is infiltrated into the back side of the waterproof tape 72 by the front side of the body. Therefore, in order to prevent water from entering from the pinhole and the sewing line, the adhesive tape (sometimes referred to as a water-stop tape or a seam tape) may be attached to the pinhole formed at the time of sewing. The back side of the waterproof cloth 72. In this case, as the subsequent tape, a tape or the like in which an adhesive layer is formed on one surface of a belt-shaped base fabric which is woven, for example, is often used.

Further, in the waterproof zipper 70 of Patent Document 1, the sheet member 75 bonded to the space portion of the fastener tape 71 is formed by coating a base fabric or a non-woven fabric with a thermoplastic elastomer or a synthetic rubber as described above, or A film made of synthetic resin is included.

Therefore, when the base fabric or the non-woven fabric is coated with the thermoplastic elastomer or the synthetic rubber to constitute the sheet member 75, for example, as described above, even if it is sought to block the pinhole (the pinhole is used to use the sewing machine to waterproof the tape 72) When the zipper is sewn by the body and the tape is formed by attaching the tape to the back side of the waterproof cloth tape 72 to be sewn, the water may penetrate from the front side of the zipper body as follows. To the back side of the waterproof cloth belt 72.

Specifically, when the lower end side of the waterproof zipper 70 is sewn and the zipper is placed, the sewing machine needle pierces the waterproof tape 72, the sheet member 75, and the zipper, so that the sheet member Pinholes are also formed on the 75. In this case, even if the tape is attached to the back side of the waterproof tape 72 in order to block the pinhole, water is immersed from the front side of the zipper body through the pinhole and the sewing line to constitute the sheet member. In the base fabric or the non-woven fabric of 75, the water spreads along the base fabric or the non-woven fabric of the sheet member 75, whereby water is allowed to pass from the edge of the sheet member 75 to the back of the waterproof fabric 72. Bad side infiltration.

Therefore, in the past, in order not to allow water to spread inside the sheet member 75, as the sheet member 75, a sheet member composed of a base fabric or a non-woven fabric is not used, and a sheet member containing only a synthetic resin is used. By using such a synthetic resin sheet as the sheet member 75, even if pinholes are formed in the sheet member 75, water can be prevented from spreading inside the sheet member 75 and penetrating into the waterproof tape 72. The back side.

However, in the case where the sheet member 75 is formed only of synthetic resin without using a base fabric or a non-woven fabric, the thickness of the sheet member 75 is required as the sheet member 75 in order to obtain the necessary strength (the strip is forward and reversed) The size) is set to a certain size or more, so that the sheet member 75 cannot be made thin.

When it is necessary to increase the thickness of the sheet member 75 to a certain extent or more, when the sheet member 75 is fixed to the back side of the waterproof tape 72, the sheet member 75 is directed from the back surface of the waterproof tape 72. The protruding height of the cloth strip protruding in the forward and reverse directions is increased, and along the periphery of the sheet member 75, a large step is formed between the back surface of the waterproof cloth tape 72 and the back surface of the sheet member 75. difference.

Therefore, after the waterproof cloth tape 72 and the zipper are sewed by the sewing machine, the slinger tape 72 for blocking the pinhole and the waterproof tape 72 and the sheet member 75 (in other words, the cross-cut waterproof cloth) When the belt 72 and the sheet member 75 are attached to each other, the adhesion of the tape is deteriorated due to the above-described step difference formed between the waterproof tape 72 and the sheet member 75, thereby being waterproof. A gap is easily formed between the tape 72 and the sheet member 75 and the subsequent tape.

Thus, if a gap is formed between the waterproof tape 72 and the sheet member 75 and the succeeding tape, the task of clogging the pinhole by the tape itself cannot be sufficiently performed, and thus there is the following problem: the zipper is attached. The front side is spread over the pinhole and the sewing line inserted into the pinhole to reach the back side of the waterproof tape 72, and the water penetrates into the back side of the waterproof zipper 70 through the gap, thereby making the waterproof zipper The liquid tightness of 70 is lowered.

The present invention has been made in view of the above-mentioned problems, and a specific object thereof is to provide a waterproof zipper excellent in liquid tightness and a waterproof product in which the waterproof zipper is sewn, and the waterproof zipper is worn even by a zipper. The body is sewn to form a pinhole in the waterproof tape or the sheet member, and the liquid such as water can be prevented from immersing from the side (outer surface) side of the waterproof zipper to the other side (inner surface) side.

In order to achieve the above object, a waterproof zipper according to the present invention is characterized in that it comprises a pair of fastener tapes which are provided on at least one of the first and second tape faces, and include a waterproof fabric on the left and right sides of the waterproof layer. a plurality of synthetic resin fastener elements are integrally formed on the side edge of the belt, and a sliding member is slidably mounted along a chain of teeth including a plurality of the fastener elements; and a stop, And arranging the water-repellent tape on the right and left sides on at least one end side of the element row; the end portion of the chain in the longitudinal direction includes a space portion in which the fastener element is not disposed, and the arrangement is performed a sheet member side of the water-repellent tape of the space portion on the side of the stopper, and a sheet member including a thermoplastic resin or a thermoplastic elastomer is fixed across the left and right waterproof tapes, and the stopper is Covering the above One of the sheet members is fixed to the waterproof tape, and the sheet member includes a decreasing portion that spans at least a portion of the length direction of the side edges of the left and right side edges to cause the tape The thickness dimension in the forward and reverse directions is gradually decreased toward the outer side in the width direction of the tape.

In the waterproof zipper of the present invention, it is preferable that the sheet member is fixed to the recessed portion, and the recessed portion is formed such that one of the tape-receiving side faces of the waterproof tape is recessed into a concave shape, and the other is The side of the cloth belt is raised. In this case, it is particularly preferable that the cross-sectional view of the waterproof zipper is from the center of the outer edge of the tape of the waterproof tape to the outer surface of the sheet member. The maximum thickness dimension in the forward and reverse directions of the cloth belt is set to be smaller than the maximum in the forward and reverse directions of the tape from the center position to the other tape surface of the tape portion to which the sheet member is fixed. Thickness size.

Further, in the waterproof slide fastener of the present invention, preferably, the left and right side edge portions of the sheet member include: a first side edge portion having the tapered portion formed thereon; and a second side edge portion disposed on the chain The end portion of the tooth row side is made to have a thickness dimension of the sheet member toward the outer side in the tape width direction and is sharply reduced from the first side edge portion.

Further, in the waterproof slide fastener of the present invention, it is preferable that the stopper is disposed at an end portion on a side in which the slider is slid so that the element rows are separated, and the fastener element is embedded. Part of it.

Further, it is preferable that the stopper is disposed at an end portion on a side in which the slider is slid so that the fastener element is locked, and includes a main body portion that stops the sliding member and stops; The slider insertion portion is disposed from the main body portion toward the element row, and is inserted into the element guide path of the slider.

Further, in the waterproof slide fastener of the present invention, it is preferable that the stopper is fixed to both the end portion side and the other end side of the element row.

Moreover, according to the present invention, there is provided a water-repellent product in which a waterproof zipper having the above-described configuration is attached to a zipper, and a second surface of the waterproof zipper is superposed on the zipper-attached body. Sewn on the side of one side, and covered with the above-mentioned sewing The water-repellent tape of the pinhole is bonded to at least one of the tape surfaces of the waterproof tape and the outer surface of the sheet member.

In the waterproof slide fastener of the present invention, the sheet member including the thermoplastic resin or the thermoplastic elastomer is on the side of the tape surface (for example, the first tape surface) of the space portion of the fastener tape, and spans the left and right waterproof tape. And the sheet member includes a decreasing portion which is in a range of at least a part of the longitudinal direction of the side edges of the left and right sides, so that the thickness of the tape in the forward and reverse directions is toward the width of the tape. The outer side is decreasing.

In the waterproof zipper of the present invention, even if the thickness of the sheet member is increased to some extent in order to secure the strength of the sheet member, a tapered portion may be disposed on the side edge portion of the sheet member. On the outer side of the side edge portion of the sheet member, the step formed between the one tape surface of the waterproof tape and the outer surface of the sheet member is made small (or the step difference is eliminated), thereby making the waterproof cloth The belt belt surface and the outer surface of the sheet member are formed as one continuous contiguous surface.

Thereby, after the waterproof tape and the sheet member of the waterproof zipper of the present invention are sewn on the zipper-attached body, the tape surface of the waterproof tape and the outer surface of the sheet member can be firmly attached. It is difficult to form a gap between the waterproof cloth tape and the sheet member and the water-stop cloth tape by combining one piece of the water-stop cloth tape (the cloth tape).

Therefore, even if pinholes are formed in the waterproof tape and the sheet member at the time of sewing, the liquid such as water does not spread inside the sheet member and penetrates into the back side of the waterproof zipper, and can also be prevented. Since the waterproof tape and the sheet member are infiltrated with the water-stopping tape, the liquid tightness can be greatly improved. Moreover, the water-repellent zipper of the present invention not only exhibits liquid tightness for preventing liquid from entering, but also exhibits airtightness against gas intrusion.

In the present invention, the decreasing portion refers to a portion in which the thickness dimension is gradually decreased in one direction. In this case, the ratio (size) at which the thickness dimension is reduced is not particularly limited. Moreover, the outer surface of the sheet member means a sheet disposed in the front and back directions of the tape. The member is fixed to the opposite side of the surface (fixing surface) on the waterproof cloth, and faces the outer side.

In the waterproof slide fastener of the present invention, the sheet member is fixed to the recessed portion, and the recessed portion is formed such that one side of the tape surface (first tape surface) of the waterproof tape is recessed. And the other tape surface (the second tape surface) side is raised. In this case, in the case of the cross-sectional view of the waterproof zipper, the tape from the center of the outer edge of the tape of the waterproof tape to the outer surface of the sheet member is raised to the outer surface of the sheet member. The largest thickness dimension in the opposite direction is set to be smaller than the maximum thickness dimension in the forward and reverse directions of the tape from the center position to the other tape surface of the tape portion to which the sheet member is fixed.

Thereby, one of the surface of the waterproof tape and the two surfaces of the outer surface of the sheet member can be brought close to one continuous smooth surface, so that when the water-repellent tape is attached across the faces It is more difficult to form a gap between the waterproof tape and the sheet member and the water-stopping tape, so that the liquid-tightness of the waterproof zipper can be further improved.

Further, in the waterproof slide fastener of the present invention, the left and right side edge portions of the sheet member include a first side edge portion formed with a decreasing portion, and a second side edge portion disposed at the end of the element row side In addition, the thickness dimension of the sheet member is reduced toward the outer side in the tape width direction and is sharply reduced from the first side edge portion.

For example, when the sheet member is fixed to one of the tape faces (the first tape faces) of the waterproof tape, the die is laminated on one of the tape side faces of the waterproof tape. In the state of the member, the sheet member is pressed against the waterproof cloth and heated (including high-frequency heating), whereby the sheet member is easily fixed to the waterproof tape. At this time, the second side edge portion of the sheet member is engaged with the mold to position the sheet member, whereby the sheet member can be stably fixed to a specific position of the waterproof tape, and can be used in the sheet. The tapered portion is stably formed on the first side edge portion of the material member.

Further, in the waterproof slide fastener of the present invention, the stopper is disposed at the end portion (generally, the lower end portion) on the side where the slider is slid so that the element rows are separated as the first stopper. Thereby, it is possible to stably ensure the liquid-tightness of the end portion of the waterproof zipper Sex. Further, in this case, the stopper is configured in a state in which one of the fastener elements is embedded, whereby the stopper is disposed so as to be continuous from the element row, so that the element can be stably secured. Liquid tightness between the stops.

On the other hand, the stopper of the present invention is disposed as a second stopper at the end portion (generally, the upper end portion) on the side where the slider is slid so that the element rows are locked, thereby stabilizing It is ensured that the end portion of the waterproof zipper is excellent in liquid tightness. Further, in this case, the stopper includes: a body portion that stops the slider from abutting; and a slider insertion portion that is disposed from the body portion toward the element row and that is inserted into the element guide path of the slider Therefore, when the slider is stopped in a state of abutting against the body portion of the stopper, liquid can be prevented from entering between the slider and the stopper.

Further, in the waterproof slide fastener of the present invention, the stopper is fixed to both the end portion side and the other end side of the element row, whereby the both ends of the element row can be stably ensured Liquid tightness.

Moreover, in the waterproof article provided by the present invention, after the waterproof zipper having the above-described configuration is sewn on the zipper-attached body, the tarp and the outer surface of the sheet member are slid over the waterproof tape. Fit the water-stop cloth. In this case, the step between one of the tape surfaces of the waterproof tape and the outer surface of the sheet member is small (or there is no step difference), so even if the water-repellent cloth is spanned and the waterproof tape and the sheet are The material member is bonded to each other, and it is difficult to form a gap between the waterproof tape and the sheet member and the water-stopping tape, so that the sheet member can be adhered to the waterproof tape and the sheet member.

Therefore, even when the water-repellent zipper and the zipper are sewn, even if a pinhole is formed in the waterproof tape and the sheet member, the liquid such as water does not spread inside the sheet member and penetrates into the waterproof zipper. Further, the back side can prevent penetration of the self-waterproof tape and the sheet member from the water-stopping tape, so that the liquid-tightness of the waterproof article can be greatly improved.

1, 1a‧‧‧Waterproof zipper

2‧‧‧Waterproof zipper

3‧‧‧ zippered body

4‧‧‧Sewing line

5‧‧‧Waterproof products

6‧‧‧Water-repellent tape (and then tape)

8‧‧‧grading department

10‧‧‧Chain

11‧‧‧Waterproof tape

11a‧‧‧ zipper tape

11b‧‧‧Waterproof layer

12‧‧‧zipper teeth

13‧‧‧Chain row

14a‧‧‧The Ministry of Space

14b‧‧‧Surface Department

15‧‧‧Sheet components

16‧‧‧Sheet main body

17‧‧‧Sheet side edge

18‧‧‧Depression

19‧‧‧through holes

20‧‧‧Sliding parts

21‧‧‧Sliding body

25‧‧‧Mold

26‧‧‧Down

26a‧‧‧ opposite

26b‧‧‧1st recess

26c‧‧‧2nd recess

27‧‧‧上模

30‧‧‧1st stop (lower stop)

31‧‧‧1st half (back side half)

32‧‧‧2nd half (front half)

40‧‧‧2nd stop (upper stop)

41‧‧‧1st half (back side half)

42‧‧‧2nd half (front half)

43‧‧‧2nd stop body

44‧‧‧Extension

45‧‧‧Sliding part insertion

46‧‧‧ Housing Department

47‧‧‧Bulge

51‧‧‧Waterproof tape

51a‧‧‧ zipper tape

51b‧‧‧Waterproof layer

52‧‧‧Sheet components

53‧‧‧Sheet side edge

55‧‧‧Sheet components

56‧‧‧Sheet main body

57‧‧‧Sheet side edge

57a‧‧‧1st edge

57b‧‧‧2nd edge

58‧‧‧Depression

66‧‧‧下模

66a‧‧‧Upper facing

66b‧‧‧1st recess

66c‧‧‧2nd recess

67a‧‧‧Bevel

67b‧‧‧Protruding

70‧‧‧Waterproof zipper

71‧‧‧Chain belt

72‧‧‧Waterproof tape

73‧‧‧zipper teeth

74‧‧‧1st stop

75‧‧‧Sheet components

75a‧‧‧ Wide section

75b‧‧‧Narrow section

76‧‧‧stop body

77‧‧‧Protruding

78‧‧‧through holes

H1, H2‧‧‧ thickness dimensions

Fig. 1 is a front view showing a waterproof zipper of Example 1 of the present invention.

Figure 2 is a rear view of the waterproof zipper.

Figure 3 is a cross-sectional view taken along line III-III of Figure 1.

Fig. 4 is an enlarged cross-sectional view showing an enlarged main portion of the waterproof zipper.

Fig. 5 is a view showing a state in which the waterproof zipper is sewn to the zipper-attached body and the water-stopping tape is attached.

Figure 6 is a cross-sectional view taken along line VI-VI of Figure 5.

Figure 7 is a cross-sectional view taken along line VII-VII of Figure 5.

Fig. 8 is a schematic view showing a mold used in the waterproof zipper when a sheet member is fixed to a waterproof tape.

Fig. 9 is a cross-sectional view showing the relationship between a water repellent tape, a sheet member, and a mold before the sheet member is fixed to the waterproof tape.

Fig. 10 is a cross-sectional view showing the relationship between a water-repellent tape, a sheet member, and a mold when a sheet member is fixed to a water-repellent tape.

11(a) to 11(d) are explanatory views for explaining a step of forming a first stopper by fixing a sheet member to a waterproof tape.

Fig. 12 is a cross-sectional view showing a waterproof slide fastener according to a modification of the first embodiment.

Fig. 13 is an enlarged view showing the essential part of the waterproof zipper according to the second embodiment of the present invention.

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 part of a mold used when a sheet member of a water-repellent zipper is attached to a waterproof tape.

Figure 17 is a cross-sectional view showing the relationship between the mold and the sheet member.

Fig. 18 is a front view showing the main part of the previous waterproof zipper.

Figure 19 is a cross-sectional view taken along the line XIX-XIX shown in Figure 18.

Hereinafter, the preferred embodiments of the present invention will be described with reference to the drawings. The form will be described in detail. Furthermore, the present invention is not limited to the embodiments described below, and various modifications can be made by having substantially the same configuration as the present invention and having the same operational effects.

In the following embodiments, the waterproof zipper in which the stoppers are disposed at both end portions of the element rows is described. However, the present invention is included in the waterproof zipper in which the stoppers are disposed on only one end side of the element rows. . Further, in the present invention, the fastener element may be formed by injection molding a synthetic resin, and the shape, size, and the like of the fastener element may be arbitrarily changed.

[Example 1]

1 and 2 are a front view and a rear view showing a waterproof slide fastener of the present embodiment, and Fig. 3 is a cross-sectional view taken along line III-III of Fig. 1. Moreover, FIG. 4 is an enlarged cross-sectional view showing an enlarged view of an essential part of the waterproof zipper.

The waterproof slide fastener 1 of the first embodiment is attached to an opening or opening/closing portion of a zipper-attached body 3 such as a tight-suited wetsuit. The waterproof slide fastener 1 is liquid-tight, that is, when the waterproof slide fastener 1 is closed, the liquid such as water does not leak from the outer side of the slide fastener 3 to the inner side via the waterproof slide fastener 1 (or leaks from the inner side to the outer side). ).

The water-repellent slide fastener 1 of the first embodiment includes a pair of right and left fastener tapes 10 which are formed by molding a plurality of synthetic resin fastener elements 12 on the side edges of the tapes of the waterproof fabric tape 11 . a slider 20 slidably disposed along a chain row 13 including a plurality of fastener elements 12; a first stop (lower stop) 30 disposed on a lower end side of the element row 13; 2 stop 40 (upper stop), which is arranged on the upper end side of the element row 13.

Further, in the upper end portion and the lower end portion of the left and right fastener tapes 10, the lower space portion 14a and the upper space portion 14b are formed in the region where the fastener element 12 is not disposed, and the lower space portion 14a and the upper space portion 14b are formed. On the side of the belt back (first belt surface), the sheet member 15 is fixed to the left and right waterproof cloth belts 11, respectively.

As shown in FIG. 3 and FIG. 4, the left and right waterproof fabric tapes 11 of the first embodiment are attached to the back surface (first tape surface) of the tape-like fastener tape 11a and the tape front surface (the first tape surface). 2nd tape On the surface, the laminate comprises a polyurethane elastomer, a polyester-based, a polyamide-based or a vinyl chloride-based thermoplastic elastomer (for example, one of polyester-based thermoplastic elastomers, which is used by Toray DuPont Co., Ltd.) The waterproof layer 11b is sold under the trade name "Hytrel".

In the following description, in the forward and reverse directions (front-rear direction) of the fastener tape, the direction from the back surface of the tape toward the front of the tape is referred to as the first direction, and is the side visible from the first direction. The waterproof fabric tape 11, the zipper-attached body 3, and the surface of the sheet member 15 are referred to as a first surface (first tape surface). On the other hand, in the second direction, the direction from the front surface of the tape toward the back surface of the tape is the waterproof tape 11 , the zipper body 3 , and the sheet which are visible from the second direction. The surface of the member 15 serves as a second surface (second tape surface).

The waterproof layer 11b of the waterproof tape 11 contains the thermoplastic elastomer as described above, whereby the water repellency can be stably ensured, and the softness of the waterproof tape 11 can be improved, and the waterproof tape 11 can be brought forward and backward. The direction or the width of the tape is bent, so that the operation of the waterproof zipper 1 becomes easy. Further, if the entire surface of the fastener tape 11a is covered with a thermoplastic elastomer, the attachment to the fastener body 3 can be easily performed by high-frequency welding.

Further, in the present invention, a waterproof layer may be provided on only one of the front and back surfaces of the tape of the fastener tape (for example, the front surface of the tape) to form a waterproof tape. In this case, the sheet member 15 is fixed to the surface of the waterproof layer of the waterproof tape.

The left and right waterproof fabric tape 11 includes: a tape main body portion to which the zipper-attached body 3 is attached along the longitudinal direction of the tape; and a tape side edge portion (also referred to as a sprocket mounting portion) disposed inside the tape main body portion ). In this case, as shown in FIG. 6, the front surface (second tape surface) of the waterproof tape 11 is superposed on the back surface (first surface) of the zipper body 3, and is sewn and covered. The water-repellent cloth tape 6 of the pinhole formed by sewing and the back surface of the tape (the first tape surface) of the waterproof tape 11 and the back surface of the sheet member 15 (the first surface, that is, the sheet member 15) It is bonded to the surface on the opposite side from the surface fixed to the waterproof cloth. On the side edge portion of the tape of the waterproof cloth tape 11, the resin material in a molten state at the time of injection molding of the fastener element 12 can be continuously penetrated at a specific interval along the longitudinal direction of the tape. Unsized The through hole shown.

Further, the waterproof tape 11 includes a recessed portion 18 which is formed on the tape portion of the upper and lower space portions 14b and 14a where the sheet member 15 is fixed, and is formed such that the back side of the tape is recessed in a concave shape and the cloth is made With a front side bulge. In other words, the recessed portion 18 is formed so that the first tape surface and the second tape surface of the waterproof tape 11 on the outer side in the tape width direction are closer to the portion where the sheet member 15 is fixed. The first tape surface side of the waterproof tape 11 to which the tape portion of the sheet member 15 is fixed is recessed in the first direction, and the second tape surface side is raised in the first direction.

That is, in the first embodiment, the sheet member 15 is integrally fixed to the region of the recess portion 18 formed at the lower end portion and the upper end portion of the waterproof fabric tape 11, respectively. Further, the presence or absence of the depressed portion 18 is determined by observing the cross section cut along the width direction of the tape. The waterproof layer 11b and the sheet member 15 are preferably made of the same material. Therefore, when it is difficult to discriminate the boundary between the waterproof layer 11b and the sheet member 15, the recessed portion 18 can be discriminated by observing the shape of the cross section of the fastener tape 11a. Whether there is.

In this case, the upper and lower sheet members 15 are not provided with a base fabric or a non-woven fabric, and only contain a polyurethane, a polyester, a polyamide or a vinyl chloride. Thermoplastic elastomer. Further, the material of the sheet member 15 is not particularly limited, and a thermoplastic resin may be used in addition to the thermoplastic elastomer.

Each of the sheet members 15 includes a sheet main body portion 16 that sets a thickness dimension of the tape in a forward and reverse direction to a specific size in order to obtain a desired strength, and a sheet disposed on the left and right sides of the sheet main body portion 16. Side edge portion 17. The sheet side edge portion 17 of the left and right sides of the first embodiment has a shape in which the thickness dimension of the sheet member 15 (the dimension in the forward and reverse directions of the tape) is gradually decreased toward the outer side in the tape width direction, and the tapered portion 8 is formed. It is formed substantially in the entire length of the tape member 15 in the longitudinal direction of the tape.

In this manner, the tapered portion 8 is formed on the left and right sheet side edge portions 17 of the sheet member 15 of the first embodiment, whereby the thickness of the sheet main body portion 16 of the sheet member 15 is made larger to some extent. The back side of the tape of the waterproof tape 11 and the back side of the sheet member 15 may also be The step formed is extremely small, so that the back surface of the tape of the waterproof tape 11 and the back surface of the sheet member 15 can be smoothly continuous.

Further, the decreasing portion 8 is determined by observing the cross section cut along the width direction of the tape. When it is difficult to discriminate the boundary between the waterproof layer 11b and the sheet member 15, the size of the zipper tape 11a to the surface of the sheet member 15 can be observed based on the shape of the cross section of the fastener tape 11a (thickness dimension). The discriminating portion 8 is discriminated.

Further, in the first embodiment, as described above, since the sheet member 15 is fixed to the region of the depressed portion 18 of the waterproof tape 11, the thickness of the sheet member 15 can be reduced by the depressed portion 18, thereby The height position of the back surface of the sheet member 15 (the position in the forward and reverse directions of the tape) is close to the height position of the back surface of the tape on the outer edge portion of the tape of the waterproof tape 11.

In this case, as shown in FIG. 4, when the water-repellent zipper 1 has a cross-sectional view, the center position of the tape in the outer and outer edges of the tape of the waterproof tape 11 is used as a reference point. The maximum thickness dimension H1 in the forward and reverse directions of the tape from the center position to the back surface (first surface) of the sheet member 15 is set to be smaller than the tape tape from which the sheet member 15 is fixed. The maximum thickness dimension H2 in the forward and reverse directions of the cloth belt on the front side (the second cloth belt surface).

When the thicknesses H1 and H2 are measured, the waterproof zipper 1 is held so that the outer edges of the tapes of the left and right waterproof tapes 11 are horizontal, and the tape is wound in the forward and reverse directions. The center position is used as a reference point, and the portion where the sheet member 15 is fixed with respect to the horizontal plane passing through the reference point (the surface parallel to the meshing element and the separating direction) is measured from the center position to the sheet. The dimension of the first surface of the member 15 or the second tape surface of the waterproof tape 11. At this time, the portion where the sheet member 15 is fixed is also parallel with respect to the horizontal plane (the sheet member 15 or the depressed portion 18 is substantially horizontal). In a simple manner, the cross-sectional photograph can be measured. However, in order to measure more accurately, it can be fixed by a transparent resin or the like while holding the waterproof slide fastener 1 as described above, and the cross section is taken and measured.

In the above-described form, the sheet member 15 is fixed to the recessed portion 18 of the waterproof tape 11, whereby the back surface of the tape on the outer edge portion of the tape of the waterproof tape 11 and the back surface of the sheet member 15 can be made. It is formed in a continuous manner so that the faces are close to one flat face.

As a result, when the water-repellent tape 6 is bonded to the back surface of the tape of the waterproof tape 11 and the back surface of the sheet member 15 (see FIGS. 5 to 7), the water-repellent tape 6 can be stopped. It is easy to follow the shape of the back surface of the tape of the waterproof tape 11 and the back surface of the sheet member 15, so that it is difficult to form a gap between the waterproof tape 11 and the sheet member 15 and the water-stopping tape 6, and the water can be stopped. The tape 6 is firmly adhered to the waterproof tape 11 and the sheet member 15.

Further, by fixing the sheet member 15 to the recessed portion 18 of the waterproof tape 11, the back surface of the tape of the waterproof tape 11 and the back surface of the sheet member 15 can be continuously formed, so that waterproofing can be achieved. The outer shape of the zipper 1 is good, and the skin on the back side of the waterproof zipper 1 (that is, the inner surface side where the skin or the like is in contact) can be made to feel good.

The fastener element 12 of the first embodiment has the same configuration as the fastener element 12 disposed on the conventional waterproof zipper 1 of the prior art. Specifically, the fastener element 12 of the first embodiment is formed by injection molding a thermoplastic resin such as polyacetal, polyamide, polypropylene, polybutylene terephthalate, nylon or polycarbonate. form.

Further, the fastener element 12 includes: an engaging head having an oblong shape; a neck formed continuously from the meshing head and having a shape of a central contraction; a trunk portion continuously formed from the neck; and a neck portion and a trunk portion a flat shoulder portion extending in the up-and-down direction; and a leg portion extending from the inner side end portion of the cloth belt from the trunk portion via the crotch portion. Further, on the top (front end portion) of the engaging head, a fitting recess for fitting the shoulder portion of the fastener element 12 on the side of the engaging object and the side edge of the tape of the waterproof tape 11 is recessed.

Each of the fastener element 12 includes a first sprocket half (front side sprocket half) disposed on the front side of the tape, and a tape side edge portion of the waterproof tape 11; The second sprocket half (back side sprocket half). The first and second sprocket halves of the fastener element 12 have a shape that is symmetrical with each other with respect to the waterproof tape 11 and are respectively fixed to the waterproof cloth. The waterproof layer 11b of the belt 11 is connected and integrated via the joint portion formed in the through hole of the waterproof tape 11.

The slider 20 of the first embodiment is formed of synthetic resin or metal, and has the same configuration as that of the slider used in the conventional waterproof zipper. Specifically, the slider 20 of the first embodiment has a stop mechanism, and includes: a slider body 21; a stop claw body (not shown) attached to the slider body 21; and is rotatably held in the slide A pull tab (not shown) on the body 21 .

In this case, the slider body 21 includes: first and second flaps; a guide post connected between the first and second flaps; and a projection disposed on the left and right side edges of the first and second flaps a rim portion; and a tab mounting post that is erected on the first flap; and a sprocket guide path having a substantially Y shape is formed between the first and second flaps. The stopping claw body includes: a claw portion disposed on one end portion of the stopping claw body; and an urging portion for guiding the claw portion to the sprocket guiding path; and configured to cause the claw portion when the pull tab is not operated Engaged with the fastener element 12 in such a manner as to enter the sprocket guiding path. Furthermore, the slider 20 of the present invention may not include a stop claw.

The first stopper (lower stop) 30 of the first embodiment is disposed on the lower end side of the element row 13 so as to determine the lower end position of the sliding range of the slider 20. The first stopper 30 is formed by injection molding a polyurethane elastomer, a polyester-based, a polyamide-based or a vinyl chloride-based thermoplastic elastomer.

The first stopper 30 includes a rectangular parallelepiped first half (back side half) 31 disposed on the back side of the tape, and a rectangular parallelepiped portion disposed on the front side of the tape. The second half (front side half) 32; the first half 31 and the second half 32 are connected via a connecting portion formed in a through hole penetrating the waterproof tape 11.

In this case, the first half 31 of the first stopper 30 is fixed to the upper end portion of the sheet member 15 and the waterproof layer 11b of the waterproof tape 11 so as to straddle the left and right waterproof tape 11 . on. The second half 32 of the first stopper 30 is fixed to the waterproof layer 11b of the waterproof tape 11 across the left and right waterproof tapes 11. Further, the first stopper 30 is configured such that the slider 20 abuts and stops. The thickness is formed to be larger than the fastener element 12 of the fastener element. Here, the thickness dimension refers to the dimension of the waterproof tape 11 in the forward and reverse directions.

Further, the first stopper 30 is configured by embedding a portion of the element row 13 including the fastener element 12 in a state in which the left and right fastener elements 12 are engaged. As a result, the first stopper 30 is continuously formed with the element rows 13 , so that the liquid-tightness between the left and right waterproof tapes 11 between the element rows 13 and the first stoppers 30 is stably ensured. Further, as described above, the first half 31 of the first stopper 30 is fixed to the sheet member 15 and the waterproof tape 11 so as to cover the upper end portion of the sheet member 15, so that the first half 31 is fixed by the first member. The stopper 30 and the sheet member 15 also stably ensure the liquid-tightness between the left and right waterproof tapes 11 of the lower space portion 14a.

The second stopper (upper stop) 40 of the first embodiment is attached to the left and right waterproof cloth belts 11 so as to determine the upper end position of the sliding range of the slider 20 in the upper end side of the element row 13. It is fixed and formed by injection molding the same material as the first stopper 30.

The second stopper 40 includes a first half (back side half) 41 disposed on the back side of the tape, and a second half (front side half) 42 disposed on the tape front side. The first half and the second half 41 and 42 are connected and integrated via a connecting portion formed in a through hole (not shown) that is formed in the waterproof tape 11.

Further, the second stopper 40 includes a second stopper main body portion 43 that stops the first and second flaps of the slider 20 and stops, and the extending portion 44 is on the back surface of the waterproof tape 11 The side extends upward from the second stopper main body portion 43 and covers the lower end portion of the sheet member 15; and the slider insertion portion 45 extends downward from the second stopper main body portion 43 and is inserted into the slider 20 The chain teeth guide the road.

The second stopper main body portion 43 is disposed on the front side of the tape and the back side of the tape across the left and right waterproof tapes 11, and the second half 42 on the front side of the tape of the second stopper main portion 43. The second half portion 42 of the slider insertion portion 45 is raised, and the second stopper body portion 43 as a whole has a larger thickness than the fastener element 12 . In this case, the second half portion 42 on the front side of the tape of the second stopper main body portion 43 has the introduction port side along the first and second flaps of the slider 20 in the front view. The shape of the outer edge is curved.

The extending portion 44 of the second stopper 40 extends upward from the second stopper main body portion 43 and is fixed to the back surface of the sheet member 15. The extending portion 44 connects the second stopper main body portion 43 and the sheet member 15 to ensure liquid-tightness between the left and right waterproof tapes 11 from the second stopper main body portion 43 to the sheet member 15. .

The slider insertion portion 45 of the second stopper 40 is formed to be smaller than the thickness of the second stopper body portion 43 in the forward and reverse directions so as to be insertable into the element guide path of the slider 20. Moreover, it has a substantially C-shaped form in the front view. An accommodating portion 46 that can accommodate the guide post of the slider 20 when the slider 20 abuts against the second stopper body portion 43 is formed on the inner peripheral side of the slider insertion portion 45.

Further, the slider insertion portion 45 includes a ridge portion 47 projecting from the inner peripheral edge portion thereof toward the front and back of the tape. The ridge portion 47 has the first and second flaps of the slider 20 when the slider 20 is brought into contact with the second stopper main body portion 43 and the slider insertion portion 45 is inserted into the element guide passage. The thickness of the inner surface is closely connected.

Further, when the slider 20 abuts against the second stopper main body portion 43, the slider insertion portion 45 has at least a part of the outer peripheral side surface of the slider insertion portion 45 in contact with the flange portion of the slider 20. And the front ends of the left and right element rows 13 of the slider insertion portion 45 are in close contact with each other.

When the second stopper 40 having the above-described configuration is stopped by abutting the slider 20 sliding in the meshing direction of the element rows 13 against the second stopper main body portion 43, the ridge portion 47 of the slider insertion portion 45 is caused. The inner surface of the first and second flaps of the slider 20 is in close contact with the guide post surrounding the slider 20, and the right and left front end portions of the slider insertion portion 45 are in close contact with each other, thereby securing the slider 20 The liquid tightness between.

Further, in the present invention, the specific shape or size of the first stopper 30 and the second stopper 40 is not particularly limited and may be arbitrarily changed. For example, in the present invention, the slider insertion portion 45 may be configured not to include the ridge portion 47. In this case, to ensure the second stop The liquid-tightness between the 40 and the slider 20 may be such that the slider insertion portion 45 is configured such that the front and back surfaces of the slider insertion portion 45 are in close contact with the first and second flaps of the slider 20.

Further, in the waterproof zipper of the present invention, when the first stopper 30 is disposed as described above, the second stopper may be separately formed on each of the left and right waterproof tapes 11 as described above. The stop is not a stop that is fixed across the left and right waterproof cloth belts 11.

Next, a method of manufacturing the waterproof slide fastener 1 of the first embodiment will be described.

First, a waterproof tape 11 is prepared. Specifically, the zipper tape 11a and the film are supplied in a state in which the zipper tape 11a is woven or knitted, and a film containing a thermoplastic elastomer is laminated on both the front and back sides of the tape of the obtained zipper tape 11a. The film laminated on the front and back surfaces of the tape is welded to the fastener tape 11a until it is heated. Thereby, the waterproof tape 11 including the waterproof layer 11b on the front surface of the tape and the back surface of the tape is obtained. The waterproof cloth tape 11 obtained at this time is formed into a long strip so that a plurality of waterproof slide fasteners 1 can be continuously formed in the longitudinal direction of the tape.

Then, in the range in which the side edges of the tape of the obtained waterproof fabric tape 11 are formed with the fastener elements 12, a plurality of circular through holes having a specific size are pierced at specific intervals along the longitudinal direction of the tape. . Further, in the portion where the second stopper 40 is formed in the waterproof tape 11, the side edge portion of the tape of the waterproof tape 11 is partially cut off to form a notch portion, and the accommodating portion constituting the second stopper 40 is secured. 46 space.

Then, the obtained waterproof tape 11 is combined in a group of two, and a plurality of fastener elements 12 are formed by injection molding a thermoplastic resin material on the side edge portion of the tape of the waterproof tape 11. . At this time, the fastener element 12 is fixed to the position of the through hole which is provided in the side edge part of the tape of the waterproof tape 11.

Thereby, a pair of left and right chain belts 10 including the element rows 13 are obtained. In this way, the lower end portion and the upper end portion of the pair of right and left fastener tapes 10 are provided, and the space portion 14a and the upper space portion 14b which are not disposed below the fastener element 12 are disposed (refer to FIG. 11(a)).

Furthermore, in the manufacturing method of the first embodiment, the waterproof tape 11 is formed into a long strip. In the side edge portion of the tape, the region in which the element rows 13 are formed and the region in which the element rows 13 are not formed (that is, the regions in the lower space portion 14a and the upper space portion 14b) are alternately arranged along the longitudinal direction of the tape. After the injection molding of the first stopper 30 and the second stopper 40, the waterproof tape 11 and the sheet member 15 are cut in the tape width direction in the region where the element rows 13 are not formed, as described below. This results in a waterproof zipper 1 having a specific length dimension.

After the pair of left and right chain belts 10 are formed, a welding step is performed, which is attached to the back side of the tape portion of the space portion 14a and the upper space portion 14b below the chain belt 10, and the sheet member 15 is woven across the left and right waterproof cloth. The belt is welded in a manner of 11. In the welding step of the sheet member 15, a mold 25 as shown in FIGS. 8 to 10 is used, and the waterproof cloth tape 11 and the sheet member 15 are pressed while being pressed, and a waterproof cloth is faced. The belt 11 and the sheet member 15 are applied with a high frequency, whereby the sheet member 15 is welded to the left and right waterproof cloth belts 11.

In the welding step of the manufacturing method of the first embodiment, the sheet member 15 fixed to the space portion 14a of the water-repellent zipper 1 in the waterproof zipper 1 which is formed adjacent to the longitudinal direction of the tape, The sheet member 15 fixed to the upper space portion 14b of the other waterproof slide fastener 1 is constituted by one sheet member 15, which is not formed in the long waterproof cloth belt 11 The specific position of the region of the element row 13 is welded.

The mold 25 used in the welding step includes a lower mold 26 and an upper mold 27, and a first rectangular shape for inserting the sheet member 15 on the opposite surface 26a of the lower mold 26 opposed to the upper mold 27 is provided. The recessed portion 26b and the second recessed portion 26c for inserting the element rows 13 formed on the left and right link belts 10.

In this case, the length dimension of the bottom surface of the first recessed portion 26b of the lower mold 26 (the dimension in the longitudinal direction of the tape) is set to be substantially the same as the length dimension of the sheet member 15 before welding. Further, the width dimension of the bottom surface of the first recessed portion 26b (the dimension in the tape width direction) is set to be smaller than the width dimension of the sheet member 15 before welding, and the left and right side wall portions of the first recessed portion 26b are formed from the first recessed portion. The bottom surface of 26b is inclined toward the upper surface 26a of the lower mold 26 and is inclined upward. Further, the depth of the first concave portion 26b is from the opposing surface 26a to the first concave portion of the lower mold 26 The dimension of the tape in the front and back directions of the bottom surface of 26b is set to be smaller than the thickness of the sheet member 15 before welding.

The second recessed portion 26c of the lower mold 26 has a size at which the upper end portion of the lower mold 26 can accommodate the element row 13 therein, and the mold 25 can be chained by accommodating the element row 13 in the second recess 26c. With 10 positioning.

On the other hand, on the opposite side of the upper mold 27 opposite to the lower mold 26, a recess (not shown) for inserting the element rows 13 formed on the left and right chain belts 10 has an upper end on the upper mold 27. The portion can be formed by accommodating the element row 13 in the inside.

When the welding step of the sheet member 15 is performed using such a mold 25, first, a flat sheet member 15 having a specific size is placed in the first concave portion 26b of the lower mold 26 to position the sheet member 15 under At a specific position of the die 26 (refer to Fig. 9).

Then, in a state in which the left and right element rows 13 are engaged, the left and right chain belts 10 are placed on the opposite faces 26a on which the lower mold 26 of the sheet member 15 is placed so that the back side and the lower side of the tape of the chain belt 10 are The opposing surface 26a of the die 26 and the sheet member 15 are placed opposite each other. At this time, the fastener element row 13 of the fastener tape 10 is accommodated in the 2nd recessed part 26c of the lower mold 26, and the fastener tape 10 is positioned in the specific position.

Thereafter, the upper mold 27 is placed on the front side of the tape of the left and right chain belts 10 (refer to FIG. 10), and the sheet member 15 and the waterproof cloth tape 11 are turned toward each other by the upper mold 27 and the lower mold 26. When pressed in the direction in which they are adhered to each other, a high frequency is applied to the vicinity of the boundary surface between the sheet member 15 and the waterproof tape 11, and heating is performed. Thereby, the sheet member 15 is welded at a specific position of the waterproof tape 11 (refer to FIG. 11(b)).

At this time, since the left and right side wall portions of the first concave portion 26b of the lower mold 26 are formed in an inclined surface shape as described above, the tapered portion 8 is formed on the sheet side edge portion 17 of the sheet member 15 after welding. Further, since the waterproof tape 11 is softer than the sheet member 15, or the sheet member 15 is contracted during cooling, the waterproof tape 11 is bent, as shown in FIGS. 3 and 4, and welded. The back side of the cloth tape of the rear waterproof cloth belt 11 is formed with a sheet member fixed thereto The depression 18 of 15.

After the welding step of the sheet member 15 is performed in the above manner, the slider 20 is attached to the element row 13 of the pair of left and right chain belts 10. Thereafter, the first stopper 30 and the second stopper 40 are formed by injection molding the thermoplastic elastomer at the upper end portion and the lower end portion of the fastener tape 10.

When the first stopper 30 and the second stopper 40 are formed, first, a circular through hole is formed at a specific position of the formation region of the first stopper 30 and the formation region of the second stopper 40. 19 is formed on the waterproof cloth tape 11 or the waterproof cloth tape 11 and the sheet member 15 (refer to (c) of FIG. 11. Then, by covering the formed through hole 19, the thermoplastic elastomer is injected The first stop 30 and the second stop 40 are formed at specific positions by molding (see (d) of Fig. 11).

At this time, the first stopper 30 is embedded with the lower end portion of the element row 13 and is formed on the back side of the tape of the waterproof tape 11 by partially covering the upper end portion of the sheet member 15. With front side. Thereby, the lower end of the element row 13 and the lower end edge of the waterproof tape 11 are in the longitudinal direction of the tape, and the first stop 30 and the sheet member 15 are spanned across the left and right waterproof tapes 11 The state is continuously arranged, so that the liquid-tightness between the waterproof tapes 11 in the region lower than the element row 13 is secured.

In the second stopper 40, on the space portion 14b above the chain belt 10, the slider insertion portion 45 is continuous from the element tooth row 13, and the extending portion 44 is formed in such a manner as to partially cover the lower end portion of the sheet member 15. On the waterproof cloth belt 11. In this case, the sheet member 15 to which the extending portion 44 of the second stopper 40 is fixed is disposed on the upper edge of the waterproof tape 11. Therefore, when the slider 20 abuts against the second stopper 40 and stops, the protruding portion 47 of the slider insertion portion 45 is in close contact with the inner surfaces of the first and second flaps of the slider 20, thereby making the chain The liquid-tightness between the waterproof tapes 11 in the region on the upper side of the tooth row 13 is ensured by the second stopper 40, the sheet member 15, and the slider 20.

By forming the first stopper 30 and the second stopper 40 as described above, a plurality of waterproof slide fasteners 1 are continuously formed along the longitudinal direction of the waterproof tape 11. After that, it will be waterproof The tape 11 and the sheet member 15 are cut along the width direction of the tape at a specific position in a region where the element rows 13 are not disposed, thereby producing the water repellency of the first embodiment as shown in FIGS. 1 and 2 . Zipper 1.

Further, in the present invention, the method for producing the waterproof slide fastener is not particularly limited. For example, in the present invention, the steps of forming the first stopper 30 and the second stopper 40 may be performed when the waterproof slide fastener 1 is manufactured. Moreover, the long waterproof cloth can be cut into a specific length after the long waterproof cloth is produced, and then the waterproof fastener tape of a specific length is sequentially formed into a fastener element. The waterproof member can be independently manufactured one by one by welding the sheet member and forming the first stopper and the second stopper. Further, the time and means for attaching the slider 20 to the left and right element rows 13 are not particularly limited.

Further, as described above, the water-repellent slide fastener 1 of the first embodiment manufactured by the above-described method is manufactured by attaching the opening or opening and closing portion of the zipper-attached body 3 of the wetsuit or the like to the waterproof product shown in FIG. 5.

In this case, the waterproof zipper 1 of the waterproof product 5 is such that the front surface (second tape surface) of the left and right waterproof tape 11 is on the back side of the periphery of the opening of the zipper body 3 This is attached to the zipper body 3 by means of frequency welding or by using an adhesive, and then sewed thereafter, thereby sewing the zipper body 3 with the sewing thread 4.

Further, in order to block the pinhole formed by the above-described sewing, the water repellency of the waterproof slide fastener 1 and the zipper body 3 is improved, and the water repellency zipper 1 and the back surface side of the zipper body 3 are straddle the waterproof fabric. The belt 11 and the zipper are attached to the body 3, and the water-stop cloth 6 (also referred to as a belt or a seam tape) is attached to the four parts of the upper, lower, left, and right sides. In this case, the water-stopping tape 6 is constituted by forming an adhesive layer on one surface of the woven or knitted fabric tape.

In the water-repellent product 5 thus manufactured, as described above, the tapered portion 8 is formed on the left and right sheet side edge portions 17 of the sheet member 15 disposed on the waterproof slide fastener 1, whereby the waterproof tape can be made The step formed between the sheet member 11 and the sheet member 15 is extremely small. Further, by fixing the sheet member 15 to the recessed portion 18 of the waterproof tape 11, the waterproof tape 11 can be used. The back surface of the tape at the outer edge of the tape and the back surface of the sheet member 15 are formed as one continuous surface.

Thereby, on the back side of the lower end portion of the waterproof zipper 1, the back surface of the tape of the waterproof tape 11 and the back surface of the sheet member 15 can be traversed (that is, the cross-cut waterproof tape 11 and the sheet member are transversely cut) Since the water-repellent cloth tape 6 is firmly adhered and bonded to each other, it is difficult to form a gap between the water-repellent tape 11 and the sheet member 15 and the water-stop cloth tape 6 so as to allow water to enter.

Therefore, even when the water-repellent product 5 is used, the water is inserted into the waterproof tape 11 and the sheet member 15 from the front side of the body 3, or the sewing line inserted into the pinhole. 4 Spreading, it is also possible to block the water by the water-repellent tape 6 to prevent water from immersing into the back side of the waterproof zipper 1.

In addition, the waterproof slide fastener of the present invention is not limited to the form of the waterproof slide fastener 1 of the first embodiment, and includes, for example, the waterproof slide fastener 1a of the modified example shown in Fig. 12.

In the waterproof zipper 1a shown in Fig. 12, the waterproof tape 51 has a water repellency tape 11 different from the waterproof tape 11 having the waterproof layer 11b formed on both sides of the tape of the fastener tape 11a of the above-described first embodiment. In the structure, the waterproof tape 51 is formed by forming a waterproof layer 51b on only the front surface (second tape surface) of the fastener tape 51a. Further, in the present invention, a water-repellent tape having a waterproof layer formed on the back surface (the first tape surface) of only the tape of the fastener tape may be used.

The sheet member 52 of this modification is a surface on which the waterproof layer 51b is disposed in a region below the space portion and the upper space portion of the waterproof tape 51 (in the case of this modification, the tape of the waterproof tape 51) The front side (second cloth belt surface) side is fixed across the left and right waterproof cloth belts 51.

Moreover, the sheet side edge portion 53 of the sheet member 52 has a shape in which the thickness dimension of the sheet member 52 (the dimension in the forward and reverse directions of the tape) is gradually decreased toward the outer side in the tape width direction, and the tapered portion is formed. 8 is formed substantially in the entire length of the tape member 52 in the longitudinal direction of the tape. Further, the decreasing portion 8 may be formed in only a part of the longitudinal direction of the tape member 52.

In this case, the tape portion of the sheet member 52 is fixed to the waterproof tape 51. In the above, the recessed portion in the case of the above-described first embodiment is not formed, and the left and right waterproof tape 51 has a substantially straight shape across the entire width of the tape when the cross section is observed (not facing the tape The direction of the direction of bending).

Even in the water-resistant zipper 1a of the above-described variation, the tape-reducing portion 8 of the left and right sheets of the sheet member 52 can be formed such that the tape of the waterproof tape 51 is front and back. The front faces of the material members 52 are continuous with each other. In this case, for example, after the zipper-attached body 3 is sewed on the back side of the waterproof zipper 1a, the water-repellent tape can be applied to the front side of the waterproof tape 51 and the sheet member 52. The front surface of the tape of the waterproof fabric tape 51 and the front surface of the sheet member 52 make the water-repellent cloth tape adhere to each other, so that it is difficult to form water immersion between the waterproof cloth tape 51 and the sheet member 52 and the water-stop cloth tape. The gap. Therefore, the waterproof zipper 1a of this modification is also excellent in watertightness.

[Embodiment 2]

Fig. 13 is an enlarged view showing the essential part of the waterproof slide fastener of the second embodiment. Figure 14 is a cross-sectional view taken along the line XIV-XIV shown in Figure 13, and Figure 15 is a cross-sectional view taken along the line XV-XV shown in Figure 13.

Further, in the second embodiment, the form of the sheet member fixed to the space portion and the upper space portion of the waterproof zipper is different from that of the first embodiment, and the waterproof zipper other than the form of the sheet member is formed. The same as the above-described first embodiment. Therefore, in the second embodiment, the components and members having substantially the same configurations as those of the above-described first embodiment are denoted by the same reference numerals, and the description thereof will be omitted.

In the space portion and the upper space portion of the waterproof slide fastener 2 of the second embodiment, a sheet member 55 is fixed. In this case, the sheet member 55 disposed on the lower space portion is fixed to the region of the waterproof tape 11 including the depressed portion 58 formed at the lower end portion.

The sheet member 55 includes a sheet main body portion 56 disposed at a central portion in the tape width direction, and a sheet side edge portion 57 disposed on the left and right sides of the sheet main body portion 56. Further, the left and right sheet side edge portions 57 of the second embodiment include: a first side edge portion 57a having The thickness of the sheet member 55 is gradually decreased toward the outer side in the tape width direction; and the second side edge portion 57b is disposed closer to the element row 13 than the first side edge portion 57a. The upper end portion has the thickness dimension of the sheet member 55 toward the outer side in the tape width direction and is sharply reduced from the first side edge portion 57a. Therefore, the sheet member 55 includes the tapered portion 8 across a range of one of the longitudinal direction portions of the side edges of the left and right sides.

As described above, the tapered portion 8 is formed on the left and right first side edge portions 57a of the sheet member 55 of the second embodiment, whereby the thickness of the sheet main body portion 56 of the sheet member 55 is changed to some extent. Large, the step formed between the waterproof tape 11 and the sheet member 55 can be made extremely small, so that the back surface of the tape of the waterproof tape 11 and the back surface of the sheet member 55 can be smoothly continuous.

Further, as shown in FIG. 14, the second side edge portion 57b of the sheet member 55 of the second embodiment has a side end surface which is disposed substantially perpendicular to the back surface of the sheet member 55, and the side end surface is formed by the side end surface. The thickness of the sheet member 55 is reduced sharply from the tapered portion 8 of the first side edge portion 57a. As described below, in order to perform the welding step of the sheet member 55 using the mold, the second side edge portion 57b is disposed in the lower mold 66 in order to stably position the sheet member 55 at a specific position of the lower mold 66. The protrusion 67b on the side edge portion of the first recess 66b is formed.

Further, in the second embodiment, when the waterproof slide fastener 2 is manufactured, as described below, the sheet member 55 and the waterproof cloth tape 11 are placed in the middle of the longitudinal direction of the tape of the fastener tape (not limited to the center). The zipper tape is cut along the width direction of the tape. In Fig. 13, the lower end portion of the sheet member 55 (the lower end portion of the waterproof tape) does not have a projection portion disposed on the lower mold 66. The state of the second side edge portion 57b formed by 67b.

On the other hand, in the second embodiment, the sheet member 55 disposed on the upper space portion is not shown, and is fixed to the region of the waterproof tape 11 which is formed in the recessed portion of the upper end portion. In addition, the sheet member 55 disposed on the upper space portion includes a sheet main body portion disposed at a central portion in the tape width direction, and is disposed on the sheet, similarly to the sheet member 55 disposed on the lower space portion. The side edges of the sheets on the left and right sides of the main body portion, and further, the left and right pieces The material side edge portion includes: a first side edge portion on which the tapered portion is formed; and a second side edge portion disposed closer to the lower end portion of the element tooth row 13 side than the first side edge portion, and the sheet member is made The thickness dimension is sharply reduced toward the outer side in the tape width direction from the first side edge portion.

When the waterproof zipper 2 of the present embodiment 2 in which the sheet member 55 as described above is fixed to the waterproof cloth tape 11 is manufactured, the sheet member is executed using the mold including the lower mold 66 as shown in FIG. 55 welding step. Further, in the second embodiment, as in the first embodiment, the following method is employed in which a plurality of waterproof zippers 2 are continuously formed along the longitudinal direction of the long waterproof tape 11, and then the waterproof cloth is provided. The belt member 11 and the sheet member 55 are cut along the tape width direction at a specific position (position at the intermediate portion in the longitudinal direction) of the region where the element rows 13 are not disposed, thereby manufacturing a plurality of waterproof slide fasteners 2.

The mold used in the welding step of the sheet member 55 includes a lower mold 66 and an upper mold not shown, and for the upper mold, the upper mold 27 used in the welding step with the sheet member 15 of the above-described first embodiment is used (refer to Figure 8) is the same. On the other hand, on the upper mold facing surface 66a of the lower mold 66 of the second embodiment, as shown in Fig. 16, a first concave portion 66b for inserting the sheet member 55 and for inserting and forming the left and right portions are provided. The second recess 66c of the element row 13 on the chain belt 10.

In this case, the side wall portion on the right and left sides of the first concave portion 66b of the lower mold 66 is formed with a slope portion 67a disposed on the central portion in the longitudinal direction of the tape, and is disposed so as to sandwich the slope portion 67a. Projecting portions 67b on the upper end portion and the lower end portion. The inclined surface portion 67a is formed in an inclined surface shape that is inclined upward from the bottom surface of the first concave portion 66b toward the upper mold facing surface 66a of the lower mold 66. The protruding portion 67b is formed to protrude inward in the width direction from the inclined surface portion 67a. Further, the interval between the left and right projecting portions 67b formed on the upper end portion of the first recessed portion 66b and the interval between the left and right projecting portions 67b formed on the lower end portion are set to be the width of the sheet member 55 before welding. The dimensions of the directions are approximately the same size.

When the welding step of the sheet member 55 is performed using such a mold, as shown in FIG. 17, the sheet member 55 is placed in the first concave portion 66b of the lower mold 66. At this time, the sheet member 55 is embedded The upper and lower projections 67b disposed on the upper end portion and the lower end portion of the first recessed portion 66b are locked, thereby being stably positioned at a specific position with respect to the lower mold 66.

Next, in the state in which the left and right element rows 13 are engaged, the left and right chain belts 10 are placed on the upper mold facing surface 66a of the lower mold 66 of the sheet member 55 so that the back side of the tape of the chain belt 10 is provided. The upper mold 66 is placed so as to face the upper mold facing surface 66a and the sheet member 55.

Thereafter, the upper mold is placed on the front side of the tape of the left and right chain belts 10, and the sheet member 55 and the waterproof cloth tape 11 are pressed toward each other by the upper mold and the lower mold 66. Heating is performed by applying a high frequency to the vicinity of the boundary surface between the sheet member 55 and the waterproof tape 11 .

Thereby, the sheet member 55 is stably welded at a specific position of the waterproof tape 11. In this case, since the inclined surface portion 67a is formed on the left and right side wall portions of the first concave portion 66b of the lower mold 66 as described above, the first side edge portion 57a on the left and right sides of the sheet member 55 after welding is stably formed. There is a decreasing part 8.

The water-repellent zipper 2 of the second embodiment manufactured by performing the welding step of the sheet member 55 as described above is attached to the zipper by high-frequency welding or by using an adhesive in the same manner as in the above-described first embodiment. After being placed on the body 3, it is sewn to the zipper body 3 by sewing. Then, the water-repellent zipper 2 and the back side of the zipper-attached body are attached to the waterproof fabric tape 11 and the zipper-attached body so as to be attached to the water-repellent zipper 2 and the zipper-attached body.

Further, the waterproof product manufactured in this manner is formed by sewing the water-repellent tape 11 or the sheet member 55 with a pinhole, and the water-repellent cloth tape spans the back surface of the tape of the waterproof tape 11 and Since the back surface of the sheet member 55 is firmly bonded to each other, water can be prevented from entering the back side of the waterproof slide fastener 2 from the front side of the zipper by the needle hole or the sewing thread inserted into the needle hole.

8‧‧‧grading department

10‧‧‧Chain

11a‧‧‧ zipper tape

11b‧‧‧Waterproof layer

15‧‧‧Sheet components

16‧‧‧Sheet main body

17‧‧‧Sheet side edge

18‧‧‧Depression

30‧‧‧1st stop (lower stop)

31‧‧‧1st half (back side half)

32‧‧‧2nd half (front half)

H1‧‧‧ thickness size

H2‧‧‧ thickness size

Claims (8)

A waterproof zipper (1, 2) comprising: a pair of chain belts (10) attached to the left and right waterproof fabrics of at least one of the first and second tape faces including the waterproof layer (11b) a plurality of synthetic resin fastener elements (12) are formed on the side edge portion of the belt (11), and the slider (20) is provided with a plurality of the above-mentioned fastener elements (12) a sprocket (13) slidably mounted; and a stop (30, 40) disposed on the left and right of the waterproof tape (11) on at least one end side of the element row (13); The chain belt (10) includes, in both end portions in the longitudinal direction, a space portion (14a, 14b) on which the fastener element (12) is not disposed, and the space portion on the side where the stopper (30, 40) is disposed ( 14a, 14b) one of the tape side faces of the waterproof tape (11), which is sandwiched between the left and right waterproof tapes (11) and has a sheet member containing a thermoplastic resin or a thermoplastic elastomer ( 15, 55), the stopper (30, 40) covers a portion of the sheet member (15, 55) and is fixed to the waterproof tape (11), and the sheet member (15, 55) comprises Declining section (8), the decreasing The portion (8) is a range of at least a part of the longitudinal direction of the tape at the side edge portions of the side and the left and right sides, and the thickness dimension of the tape in the forward and reverse directions is gradually decreased toward the outer side in the tape width direction. The waterproof zipper of claim 1, wherein the sheet member (15, 55) is fixed to the recessed portion (18), and the recessed portion (18) is formed to make the waterproof tape (11) The tape side surface is recessed in a concave shape, and the other tape side is embossed. The water-repellent zipper according to claim 2, wherein in the cross-sectional view of the waterproof zipper (1, 2), the tape is fed from the outer edge of the tape of the waterproof tape (11) to the center of the tape in the front and back directions The maximum thickness dimension (H1) in the forward and reverse directions of the tape from the outer surface to the outer surface of the sheet member (15, 55) is set to be smaller than the above-described center member to fix the above-mentioned sheet member (15) 55) The maximum thickness dimension (H2) of the tape in the forward and reverse directions of the other tape surface of the tape portion. The water-repellent zipper according to any one of claims 1 to 3, wherein the left and right side edge portions of the sheet member (55) include: a first side edge portion (57a) having the tapered portion (8) formed therein; The second side edge portion (57b) is disposed at an end portion of the element row (13) side, and has a thickness dimension of the sheet member (55) toward the outer side in the tape width direction and is smaller than the first side edge Ministry (57a) is drastically reduced. The waterproof zipper according to any one of claims 1 to 3, wherein the stopper (30) is disposed at a side of a direction side at which the slider (20) is slid in such a manner that the element row (13) is separated A portion of the above-mentioned fastener element (12) is embedded in the upper portion. The waterproof zipper according to any one of claims 1 to 3, wherein the stopper (40) is disposed at a side of a direction side at which the slider (20) is slid in such a manner that the element row (13) is locked. And a main body portion (43) that stops the sliding member (20) and stops; and a slider insertion portion (45) that faces the main body portion (43) toward the chain element row (13) And configured, and inserted into the element guide path of the slider (20). The waterproof zipper according to any one of claims 1 to 3, wherein the stopper (30, 40) is fixed to both the end side and the other end side of the element row (13). A water-repellent product obtained by laminating the second surface of the water-repellent zipper (1, 2) according to any one of claims 1 to 7 on the first surface side of the zipper-receiving body (3) And at least one of the tape surface of the waterproof tape (11) and the outer surface of the sheet member (15, 55) are bonded to the water-repellent tape tape covering the pinhole formed by the sewing (6).