WO2013136473A1 - 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 slide fastener and waterproof product

The present invention relates to a waterproof slide fastener and a waterproof product, and more particularly to a waterproof slide fastener and a waterproof product having a stopper having a waterproof structure capable of effectively preventing liquid from entering.

Conventionally, a slide fastener (hereinafter referred to as a waterproof) is provided in an opening / closing part or an opening part of a wet suit or a boot for boots in order to prevent a liquid such as water from entering inside when the opening / closing part or the opening part is closed. Are often used as waterproof slide fasteners). Here, the term “waterproof” means that not only water does not pass but also liquids other than water do not pass. Some waterproof slide fasteners not only prevent liquid from entering but also exhibit airtightness to prevent gas from entering.

A waterproof slide fastener usually has a pair of left and right fastener stringers in which element rows are formed on a waterproof tape having a waterproof layer, and a slider that can slide along the element rows. And the opposite side edges of the left and right waterproof tapes are brought into close contact with each other, so that water passes between the left and right waterproof tapes from the tape surface side to the tape back side (or from the tape back side to the tape surface side). To prevent intrusion.

In such waterproof slide fasteners, stoppers are often arranged at both ends of the element row, and the sliding range of the slider is regulated by the stoppers. Here, of the stoppers arranged at both ends of the element row, the one on the side where the slider abuts when the left and right element rows are completely opened is defined as the first fastener (also referred to as the lower stopper). The stop on the side where the slider abuts when the left and right element rows are completely closed is defined as a second stop (also referred to as an upper stop).

In the following description, the vertical direction refers to the length direction of the fastener tape and is the same direction as the sliding direction in which the slider slides. In particular, the direction in which the slider slides so as to close the slide fastener by engaging the left and right element rows is upward, and the direction in which the slider is slid so as to open the slide fastener by separating the left and right fastener elements is downward. To do.

Left and right direction refers to the tape width direction of the fastener tape, which is parallel to the tape surface of the fastener tape and orthogonal to the tape length direction. Also, the front-rear direction refers to the front and back direction of the fastener tape perpendicular to the tape surface of the fastener tape, and in particular, the direction on the side where the slider handle is arranged with respect to the fastener tape is the front direction, and the opposite direction. Is the rear.

The structure of the first stopper (lower stopper) disposed on the waterproof slide fastener is disclosed in, for example, Japanese Patent Application Laid-Open No. 2007-215819 (Patent Document 1).
As shown in FIGS. 18 and 19, the waterproof slide fastener 70 described in Patent Document 1 has a plurality of synthetic resin fastener elements 73 attached to the side edge of the waterproof tape 72 by injection molding. A pair of left and right fastener stringers 71, a slider (not shown), and a first stopper 74 fixed to the lower ends of the left and right fastener stringers 71. The first stopper 74 slides on the slider. The lower limit of the range is defined.

The left and right fastener stringers 71 have space portions that are regions where the fastener elements 73 are not disposed at both ends of the waterproof tape 72 in the length direction. A sheet member 75 is bonded or welded between the left and right waterproof tapes 72 on the tape rear surface side of the lower space portion of the fastener stringer 71, and the first stopper 74 is attached to the sheet member 75. It is provided on both the front and back surfaces of the waterproof tape 72 so as to cover a part thereof.

The sheet member 75 of Patent Document 1 is configured by attaching a thermoplastic elastomer or synthetic rubber to the surface of a woven or knitted base fabric or non-woven fabric, or by a resin film. The sheet member 75 has a wide portion 75a having a wide tape width direction and a narrow portion 75b extending upward from the wide portion 75a and having a narrow tape width direction, and the leading edge of the narrow portion 75b is a fastener. It is in contact with the element 73.

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

Further, the fastener main body 76 has a first half (tape surface side half) arranged on the tape surface side and a second half (tape back surface side half) arranged on the tape back surface side. The first half and the second half are connected and integrated through a waterproof tape 72 and a through hole 78 formed in the sheet member 75.

The protruding portion 77 is arranged to protrude upward from the upper surface portion of the fastener main body portion 76 to the fastener stringer 71 on the side (right side) where the fastener element 73 (first element) adjacent to the first stopper 74 is not provided. The slider is configured so that it can be inserted into the element guide path of the slider when it comes into contact with the stopper main body 76. Since such protrusions 77 are arranged on the tape front surface side and the tape back surface side, the slider can be accurately slid in the vicinity of the stopper main body portion 76.

In the waterproof slide fastener 70 of Patent Document 1 having the above-described configuration, the sheet member 75 is stuck between the left and right waterproof tapes 72 in a space portion where the fastener element 73 of the fastener stringer 71 is not disposed. Therefore, water can be prevented from entering even in the area of the space portion. In particular, in the waterproof slide fastener 70 of Patent Document 1, since the upper end edge of the seat member 75 is in contact with the fastener element 73, the liquid tightness between the fastener element 73 and the first stopper 74 is simple. Can be secured.

In addition, since the sheet member 75 of Patent Document 1 is fixed between the left and right waterproof tapes 72, even if a lateral pulling force is applied to the left and right fastener stringers 71 respectively toward the outside in the width direction. The positional relationship of the left and right waterproof tapes 72 in the space portion is maintained, and the left and right fastener elements 73 are prevented from separating from the lower end side together with the first stopper 74.

JP 2007-215819 A

When such a waterproof slide fastener 70 of Patent Document 1 is attached to a fastener adherend such as a wet suit or a waist boot, for example, the tape front surface side of the waterproof tape 72 and the back surface side of the fastener adherend Are often adhered or welded.

Further, in recent years, the waterproof slide fastener 70 can be more reliably prevented from being displaced with respect to the fastener adherend, and the waterproof slide fastener 70 can be seen to be strongly attached to the fastener adherend. In order to obtain the above effect, the tape surface side of the waterproof tape 72 and the back surface side of the fastener adherend are bonded or welded, and the waterproof tape 72 and the fastener adherend are sewn using a sewing machine or the like. May wear. In this case, since the sheet member 75 is adhered to the left and right waterproof tapes 72 on the lower end side of the waterproof slide fastener 70, the sheet member 75 is sewn to the fastener adherend together with the waterproof tape 72.

When the waterproof slide fastener 70 and the fastener adherend are sewn in this way, a needle (sewing needle) is pierced through the waterproof tape 72, the sheet member 75, and the fastener adherend during sewing. In the waterproof tape 72, the sheet member 75, and the fastener adherend after sewing, a needle hole through which a sewing thread is inserted penetrates in the tape front and back direction.

However, when the needle hole penetrates the waterproof tape 72, the sheet member 75, and the fastener adherent as described above, the water is passed through the needle hole and the sewing thread inserted through the needle hole. In some cases, the waterproof tape 72 may enter from the front surface side of the wearing body. For this reason, conventionally, in order to prevent the intrusion of water from the needle hole and the sewing thread, the adhesive hole (also referred to as a water-stopping tape or a seam tape) is used so as to close the needle hole formed at the time of sewing. May be attached to the back side of the waterproof tape 72. In this case, as the adhesive tape, for example, a tape in which an adhesive layer is formed on one surface of a woven and knitted belt-like base fabric is often used.

By the way, in the waterproof slide fastener 70 of patent document 1, the sheet | seat member 75 stuck to the space part of the fastener stringer 71 is covered with a thermoplastic elastomer or a synthetic rubber on a base fabric or a nonwoven fabric as mentioned above. Or a synthetic resin film.

Accordingly, when the sheet member 75 is formed by covering a base fabric or a nonwoven fabric with a thermoplastic elastomer or synthetic rubber, for example, as described above, the waterproof tape 72 and the fastener adherend are sewn using a sewing machine. Furthermore, even when the adhesive tape is adhered to the back side of the waterproof tape 72 and measures are taken to close the needle holes formed during sewing, the water can be removed from the front side of the fastener adherend as follows. In some cases, the waterproof tape 72 may enter the back side.

Specifically, when sewing the lower end side of the waterproof slide fastener 70 and the fastener adherend, the sewing needle pierces the waterproof tape 72, the sheet member 75, and the fastener adherend, Needle holes are also formed in the sheet member 75. In this case, even if the adhesive tape is attached to the back surface side of the waterproof tape 72 in order to close the needle hole, the water forms the sheet member 75 from the front surface side of the fastener adherend through the needle hole and the sewing thread. Intrusion into the base fabric or non-woven fabric, and further, the water travels through the base fabric or non-woven fabric of the sheet member 75, thereby causing a problem of allowing water to enter from the edge of the sheet member 75 to the back side of the waterproof tape 72. There was a thing.

Therefore, conventionally, in order to prevent water from passing through the inside of the sheet member 75, a sheet member made of a synthetic resin is used instead of a sheet member made of a base fabric or a nonwoven fabric as the sheet member 75. The member was sometimes employed. By using such a sheet made of synthetic resin as the sheet member 75, even if a needle hole is formed in the sheet member 75, water penetrates the inside of the sheet member 75 and enters the back side of the waterproof tape 72. Can be prevented.

However, in the case where the sheet member 75 is composed of only a synthetic resin without using a base fabric or a nonwoven fabric, the thickness of the sheet member 75 (the dimension in the tape front and back direction) ) Must be set to a certain size or more, and the sheet member 75 cannot be formed thin.

Thus, when the thickness of the sheet member 75 must be increased to a certain level or more, when the sheet member 75 is fixed to the back surface side of the waterproof tape 72, the sheet member 75 is taped from the back surface of the waterproof tape 72. The protrusion height protruding in the front and back direction increases, and a large step is formed between the back surface of the waterproof tape 72 and the back surface of the sheet member 75 along the periphery of the sheet member 75.

For this reason, after the waterproof tape 72 and the fastener adherend are sewn by the sewing machine, an adhesive tape for closing the needle hole is spread over the waterproof tape 72 and the sheet member 75 (in other words, the waterproof tape 72 And the sheet member 75), the adhesive tape has poor adhesiveness due to the step formed between the waterproof tape 72 and the sheet member 75, and the waterproof tape 72 and the sheet member. A gap is easily formed between 75 and the adhesive tape.

When the gap is formed between the waterproof tape 72 and the sheet member 75 and the adhesive tape in this way, the adhesive tape itself cannot sufficiently serve to close the needle hole. From the side, water that has reached the back side of the waterproof tape 72 through the needle hole and the sewing thread inserted through the needle hole enters the back side of the waterproof slide fastener 70 through the gap. There is a possibility that the liquid tightness of the waterproof slide fastener 70 may be lowered.

The present invention has been made in view of the above-described conventional problems, and a specific object thereof is that even if a needle hole is formed in a waterproof tape or a sheet member by sewing with a fastener adherend, water or the like is formed. Prevents liquid from entering from one surface (outer surface) side to the other surface (inner surface) side of the waterproof slide fastener, and the waterproof slide fastener excellent in liquid-tightness and the waterproof slide fastener are sewn. It is to provide a worn waterproof product.

In order to achieve the above object, the waterproof slide fastener provided by the present invention has, as a basic structure, opposed left and right waterproof tapes each having a waterproof layer on at least one of the first and second tape surfaces. A pair of fastener stringers in which a plurality of synthetic resin fastener elements are injection-molded on the side edge of the tape, a slider slidably attached along an element row composed of the plurality of fastener elements, The fastener stringer has a space part in which the fastener element is not arranged at both ends in the length direction, and has a stopper arranged over the waterproof tape on the left and right sides at least on one end side. On one tape surface side of the waterproof tape in the space portion on the side where the stopper is disposed, thermoplastic resin or heat A sheet member made of a conductive elastomer is fixed across the waterproof tape on the left and right sides, and the stopper is a waterproof slide fastener that covers a part of the sheet member and is fixed to the waterproof tape, The sheet member has a gradually decreasing portion that gradually decreases the thickness dimension in the tape front-back direction toward the outside in the tape width direction over at least a part of the tape length direction at the left and right side edge portions. Is the main feature.

In the waterproof slide fastener according to the present invention, the sheet member is fixed to a recessed portion formed so that one tape surface side of the waterproof tape is recessed in a concave shape and the other tape surface side is raised. It is preferable. In this case, in the cross sectional view of the waterproof slide fastener, the maximum thickness dimension in the tape front and back direction from the center position in the tape front and back direction at the tape outer edge of the waterproof tape to the outer surface of the sheet member is It is particularly preferable that the thickness is set smaller than the maximum thickness dimension in the tape front and back direction from the center position to the other tape surface in the tape portion to which the sheet member is fixed.

Further, in the waterproof slide fastener of the present invention, left and right side edge portions of the sheet member are disposed on a first side edge portion on which the gradually decreasing portion is formed and an end portion on the element row side, and the sheet member It is preferable to have the 2nd side edge part which decreased the thickness dimension of this to the outer side of the tape width direction more rapidly than the said 1st side edge part.

Furthermore, in the waterproof slide fastener of the present invention, the stopper is disposed at an end portion on a side in which the slider is slid so as to separate the element rows, and a part of the fastener element is provided. It is preferable that the structure is embedded.

The stopper is arranged at an end portion on a side in which the slider is slid so as to close the element row, and a main body portion that contacts and stops the slider; and the main body portion And a slider insertion portion which is arranged toward the element row and is inserted into the element guide path of the slider.

Furthermore, in the waterproof slide fastener of the present invention, the stopper may be fixed to both one end side and the other end side of the element row.

Further, according to the present invention, the waterproof slide fastener having the above-described configuration is superimposed on the fastener adherend and the second surface of the waterproof slide fastener is overlapped on the first surface side of the fastener adherend. A waterproof product in which a waterproof tape that covers the needle hole formed by sewing and is stuck across at least one tape surface of the waterproof tape and the outer surface of the sheet member Is provided.

In the waterproof slide fastener according to the present invention, the sheet member made of thermoplastic resin or thermoplastic elastomer is disposed between the left and right waterproof tapes on one tape surface (for example, the first tape surface) side in the space portion of the fastener stringer. This sheet member gradually decreases the thickness dimension in the tape front and back direction toward the outside in the tape width direction in at least a part of the tape length direction at the left and right side edges. Has a part.

With such a waterproof slide fastener of the present invention, even if the thickness of the sheet member is increased to some extent in order to ensure the strength of the sheet member, a gradually decreasing portion is disposed on the side edge portion of the sheet member. Thus, outside the side edge of the sheet member, the step formed between one tape surface of the waterproof tape and the outer surface of the sheet member is reduced (or eliminated), and one of the waterproof tapes The tape surface and the outer surface of the sheet member can be formed as a continuous continuous surface.

Thus, after the waterproof tape and sheet member of the waterproof slide fastener of the present invention are sewn to the fastener adherend, one waterproofing tape is stretched across the tape surface of the waterproof tape and the outer surface of the sheet member. Since it becomes possible to stick (adhesive tape) firmly, it becomes difficult to form a clearance gap between a waterproof tape and a sheet | seat member, and a water stop tape.

Accordingly, even if a needle hole is formed in the waterproof tape and the sheet member during sewing, liquid such as water does not enter the back side of the waterproof slide fastener through the inside of the sheet member, and the waterproof tape And since it can also prevent intrusion from between a sheet | seat member and a waterproof tape, liquid-tightness can be improved significantly. Moreover, such a waterproof slide fastener of the present invention not only exhibits liquid tightness that prevents liquid from entering, but also exhibits good air tightness that prevents gas from entering.

In the present invention, the gradually decreasing portion refers to a portion that gradually decreases the thickness dimension in one direction, and in this case, the ratio (size) of decreasing the thickness dimension is not particularly limited. In addition, the outer surface of the sheet member refers to a surface that is arranged on the opposite side of the tape front and back direction from the surface (fixed surface) fixed to the waterproof tape of the sheet member and faces outward.

In such a waterproof slide fastener of the present invention, the sheet member has a concave recess on one tape surface (first tape surface) side of the waterproof tape, and a raised side on the other tape surface (second tape surface) side. It is fixed to the recessed part formed so as to. Particularly in this case, in the cross-sectional view of the waterproof slide fastener, the maximum thickness dimension in the tape front and back direction from the center position in the tape front and back direction at the tape outer edge of the waterproof tape to the outer surface of the sheet member is It is set smaller than the maximum thickness dimension in the tape front and back direction from the center position to the other tape surface in the tape portion to which the sheet member is fixed.

Thereby, since two surfaces of one tape surface of a waterproof tape and the outer surface of a sheet | seat member can be brought close to one continuous smooth surface, a waterproofing tape is stuck over these surfaces. In this case, it becomes difficult to form a gap between the waterproof tape and the sheet member and the water-stopping tape, and the liquid tightness of the waterproof slide fastener 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 are arranged at the first side edge portion where the gradually decreasing portion is formed and the end portion on the element row side, and the thickness of the sheet member A second side edge having a dimension that is sharply decreased from the first side edge toward the outside in the tape width direction.

For example, when the sheet member is fixed to one tape surface (first tape surface) of the waterproof tape, the sheet member is overlaid on the one tape surface side of the waterproof tape using a mold. The sheet member is easily fixed to the waterproof tape by heating (including high-frequency heating) while pressing against the waterproof tape. At this time, by locking the second side edge of the sheet member to the mold and positioning the sheet member, the sheet member is stably fixed to a predetermined position of the waterproof tape, and the first of the sheet member is fixed. It is possible to stably form the gradually decreasing portion at the side edge portion.

Furthermore, in the waterproof slide fastener of the present invention, the stopper is arranged as a first stopper at an end portion (generally, a lower end portion) on the side in which the slider is slid so as to separate the element rows. Accordingly, excellent liquid tightness can be stably secured on the end side of the waterproof slide fastener. Further, in this case, since the stopper is configured in a state where a part of the fastener element is embedded, the stopper is arranged so as to be continuous from the element row. Liquid tightness can also be secured stably.

On the other hand, the fastener of the present invention is arranged as a second stopper at the end (generally, the upper end) on the side in which the slider is slid so as to close the element row. Excellent liquid-tightness can be stably secured on the end side. Further, in this case, the stopper has a main body portion that contacts and stops the slider, and a slider insertion portion that is arranged from the main body portion toward the element row and is inserted into the element guide path of the slider. Thus, when the slider is stopped in a state where it is in contact with the main body of the stopper, it is possible to prevent liquid from entering between the slider and the stopper.

Furthermore, in the waterproof slide fastener of the present invention, the stopper is fixed to both the one end side and the other end side of the element row, so that the liquid tightness is excellent at both ends of the element row. Can be secured stably.

In the waterproof product provided by the present invention, the waterproof slide fastener having the above-described configuration is sewn to the fastener adherend, and then spanned between one tape of the waterproof tape and the outer surface of the sheet member. A water-stop tape is attached. In this case, since the level difference between one tape surface of the waterproof tape and the outer surface of the sheet member is small (or there is no level difference), the waterproofing tape is stuck across the waterproof tape and the sheet member. Even if it is done, a clearance gap is hard to be formed between a waterproof tape and a sheet | seat member, and a water stop tape, and a sheet | seat member can be stuck to a waterproof tape and a sheet | seat member.

Therefore, even if a needle hole is formed in the waterproof tape and the sheet member when the waterproof slide fastener and the fastener adherend are sewn, liquid such as water is transmitted to the back side of the waterproof slide fastener through the inside of the sheet member. Intrusion does not occur, and entry from between the waterproof tape and the sheet member and the waterproof tape can be prevented, so that the liquid tightness of the waterproof product can be greatly improved.

It is a front view which shows the waterproof slide fastener which concerns on Example 1 of this invention. It is a rear view of the waterproof slide fastener. FIG. 3 is a cross-sectional view taken along line III-III shown in FIG. It is an expanded sectional view which expands and shows the principal part of the waterproof slide fastener. It is a rear view which shows the state which sewn the waterproof slide fastener to the fastener to-be-adhered body, and stuck the waterproofing tape. FIG. 6 is a sectional view taken along line VI-VI shown in FIG. 5. FIG. 7 is a sectional view taken along line VII-VII shown in FIG. It is a schematic diagram which shows the metal mold | die used when adhering a sheet | seat member to a waterproof tape with the waterproof slide fastener. It is sectional drawing which shows the relationship between the waterproof tape before adhering a sheet | seat member to a waterproof tape, a sheet | seat member, and a metal mold | die. It is sectional drawing which shows the relationship between the waterproof tape at the time of adhering a sheet member to a waterproof tape, a sheet member, and a metal mold | die. It is explanatory drawing explaining the process of adhering a sheet | seat member to a waterproof tape and shape | molding a 1st fastener. 6 is a cross-sectional view showing a waterproof slide fastener according to a modification of Example 1. FIG. It is an enlarged view which shows the principal part of the waterproof slide fastener which concerns on Example 2 of this invention. FIG. 14 is a cross-sectional view taken along line XIV-XIV shown in FIG. 13. FIG. 14 is a cross-sectional view taken along line XV-XV shown in FIG. It is a perspective view which shows a part of metal mold | die used when adhering the sheet | seat member of the waterproof slide fastener to a waterproof tape. It is sectional drawing which shows the relationship between the metal mold | die and a sheet | seat member. It is a front view which shows the principal part of the conventional waterproof slide fastener. FIG. 19 is a cross-sectional view taken along line XIX-XIX shown in FIG.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings by way of examples. The present invention is not limited to the examples described below, and various modifications can be made as long as it has substantially the same configuration as the present invention and has the same effects. Is possible.

In the following embodiments, the waterproof slide fastener in which the stoppers are respectively disposed on both ends of the element row has been described. However, the present invention provides a stopper only on one end side of the element row. It includes a waterproof slide fastener. In the present invention, the fastener element only needs to be formed by injection molding a synthetic resin, and the shape, dimensions, etc. of the fastener element can be arbitrarily changed.

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

The waterproof slide fastener 1 according to the first embodiment is attached to an opening or an opening / closing portion of a fastener adherend 3 such as a wet suit. In the waterproof slide fastener 1, when the waterproof slide fastener 1 is closed, liquid such as water leaks from the outside of the fastener adherend 3 to the inside (or from the inside to the outside) via the waterproof slide fastener 1. It has no liquid-tightness.

Such a waterproof slide fastener 1 of the first embodiment includes a pair of left and right fastener stringers 10 in which a plurality of synthetic resin fastener elements 12 are injection-molded at opposite tape side edges of the waterproof tape 11, and a plurality of fastener stringers 10. A slider 20 slidably disposed along an element row 13 composed of fastener elements 12, a first stopper (lower stopper) 30 disposed on the lower end side of the element row 13, and an upper end of the element row 13 It has the 2nd stopper 40 (upper stopper) distribute | arranged to the part side.

Moreover, the lower space part 14a and the upper space part 14b are formed in the upper end part and lower end part of the right and left fastener stringer 10 as an area | region where the fastener element 12 is not distribute | arranged, and the lower space part 14a and the upper space part 14b are formed. The sheet member 15 is fixed to the left and right waterproof tapes 11 on the tape back surface (first tape surface) side.

As shown in FIGS. 3 and 4, the left and right waterproof tapes 11 in Example 1 are the tape back surface (first tape surface) and the tape surface (second tape) of the fastener tape 11 a woven or knitted in a band shape. Surface) from polyurethane, polyester, polyamide or vinyl chloride thermoplastic elastomers (for example, one of the polyester thermoplastic elastomers is commercially available from Toray DuPont under the trade name “Hytrel”). The waterproof layer 11b which becomes is comprised.

In the following description, in the front and back direction (front-rear direction) of the fastener tape, the direction from the tape back surface to the tape surface is defined as the first direction, and the waterproof tape 11 and the fastener adherend to be seen from the first direction. 3 and the surface of the sheet member 15 are defined as a first surface (first tape surface). On the other hand, the direction from the tape surface to the tape back surface is the second direction, and the surfaces of the waterproof tape 11, the fastener adherend 3 and the sheet member 15 that are visible from the second direction are the second surface. (Second tape surface).

Since the waterproof layer 11b of the waterproof tape 11 is made of the thermoplastic elastomer as described above, it is possible to stably secure the waterproof property, and to increase the flexibility of the waterproof tape 11 so that the waterproof tape 11 is taped. Since it becomes possible to bend in the front-back direction or the tape width direction, the waterproof slide fastener 1 can be handled easily. If the entire surface of the fastener tape 11a is covered with the thermoplastic elastomer, the attachment to the fastener adherend 3 can be easily performed by high-frequency welding.

In the present invention, it is also possible to form a waterproof tape by providing a waterproof layer only on one of the tape front and back surfaces of the fastener tape (for example, the tape surface). In this case, the sheet member 15 is fixed to the surface of the waterproof layer in the waterproof tape.

The left and right waterproof tapes 11 include a tape main body portion to which the fastener adherend 3 is attached along the tape length direction, and a tape side edge portion (also referred to as an element mounting portion) disposed inside the tape main body portion. And have. In this case, as shown in FIG. 6, the tape surface (second tape surface) of the waterproof tape 11 is sewn and overlapped with the back surface (first surface) of the fastener adherend 3, and the needle is formed by sewing. The waterproof tape 6 covering the hole is the tape back surface (first tape surface) of the waterproof tape 11 and the back surface (first surface, ie, the surface fixed to the waterproof tape of the sheet member 15) of the sheet member 15. The outer surface of the opposite side). A through-hole (not shown) having a sufficient size so that a resin material in a molten state can pass through at the time of injection molding of the fastener element 12 is formed in the tape side edge portion of the waterproof tape 11 along the tape length direction. It is continuously drilled at a predetermined pitch.

Further, the waterproof tape 11 has a recessed portion 18 formed so that the back side of the tape is recessed in the tape portion where the sheet member 15 of the upper and lower space portions 14b and 14a is fixed, and the tape surface side is raised. is doing. That is, the recessed portion 18 is a tape portion to which the sheet member 15 is fixed with reference to the first tape surface and the second tape surface of the waterproof tape 11 on the outer side in the tape width direction than the portion to which the sheet member 15 is fixed. The first tape surface side of the waterproof tape 11 is recessed in the first direction, and the second tape surface side is formed so as to protrude in the first direction.

That is, in the first embodiment, the sheet members 15 are integrally fixed to the regions of the recessed portions 18 formed at the lower end portion and the upper end portion of the waterproof tape 11, respectively. The presence or absence of the recessed portion 18 is determined by observing a section cut in the tape width direction. It is preferable to use the same material for the waterproof layer 11b and the sheet member 15. For this reason, when it is difficult to distinguish the boundary between the waterproof layer 11b and the sheet member 15, the cross-sectional form of the fastener tape 11a is observed. Thus, the presence or absence of the recessed portion 18 may be determined.

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

Each sheet member 15 includes a sheet main body portion 16 in which a thickness dimension in a tape front and back direction is set to a predetermined size in order to obtain a desired strength, and sheet side edge portions disposed on both left and right sides of the sheet main body portion 16. 17. The left and right sheet side edge portions 17 in the first embodiment have a form of a gradually decreasing portion 8 that gradually decreases the thickness dimension (the dimension in the tape front and back direction) of the sheet member 15 toward the outside in the tape width direction. The gradually decreasing portion 8 is formed on substantially the entire length of the sheet member 15 in the tape length direction.

As described above, since the gradually decreasing portions 8 are formed at the left and right sheet side edge portions 17 of the sheet member 15 of the first embodiment, even if the thickness dimension of the sheet main body portion 16 of the sheet member 15 is increased to some extent. The step formed between the tape back surface of the waterproof tape 11 and the back surface of the sheet member 15 can be made extremely small, and the tape back surface of the waterproof tape 11 and the back surface of the sheet member 15 can be smoothly continued.

Note that the gradual decrease portion 8 is determined by observing a section cut in the tape width direction. When it is difficult to determine the boundary between the waterproof layer 11b and the sheet member 15, the dimension (thickness dimension) from the fastener tape 11a to the surface of the sheet member 15 is observed on the basis of the cross-sectional form of the fastener tape 11a. Thus, the gradual decrease unit 8 may be determined.

In addition, in the first embodiment, the sheet member 15 is fixed to the region of the recessed portion 18 of the waterproof tape 11 as described above, so that the thickness of the sheet member 15 is absorbed by the recessed portion 18. The height position of the back surface of the sheet member 15 (position in the tape front and back direction) can be brought close to the height position of the tape back surface at the tape outer edge of the waterproof tape 11.

In particular, in this case, as shown in FIG. 4, when the center position in the tape front and back direction at the tape outer edge portion of the waterproof tape 11 is used as a reference point in the cross sectional view of the waterproof slide fastener 1, the center position The maximum thickness dimension H1 in the tape front and back direction from the back surface to the back surface (first surface) of the sheet member 15 is the tape from the center position to the tape surface (second tape surface) in the tape portion to which the sheet member 15 is fixed. It is set smaller than the maximum thickness dimension H2 in the front and back direction.

When the thickness dimensions H1 and H2 are measured, the waterproof slide fastener 1 is held so that the tape outer edges of the left and right waterproof tapes 11 are in a horizontal state, and the tape at the outer edges of the tape is held. The center position in the front and back direction is taken as a reference point, and the sheet member 15 is fixed from the center position at a position where the sheet member 15 is fixed to a horizontal plane (surface parallel to the engagement / separation direction of the fastener element) passing through the reference point. The dimension to the 1st surface or the 2nd tape surface of the waterproof tape 11 is measured. At that time, the location where the sheet member 15 is fixed is also parallel to the horizontal plane (the sheet member 15 and the recessed portion 18 are in a substantially horizontal state). Although it can be measured simply with a cross-sectional photograph, for more accurate measurement, the waterproof slide fastener 1 is held with a transparent resin or the like as described above, and the cross-section is It can be taken and measured.

With the sheet member 15 fixed to the recessed portion 18 of the waterproof tape 11 in such a form, the back surface of the tape on the outer edge of the waterproof tape 11 and the back surface of the sheet member 15 are made continuous. Once formed, these surfaces can be brought close to one flat surface.

As a result, as will be described later, when the waterproof tape 6 is applied across the back surface of the waterproof tape 11 and the back surface of the sheet member 15 (see FIGS. 5 to 7), the waterproof tape 6 is Since it can easily follow the shape of the back surface of the waterproof tape 11 and the back surface of the sheet member 15, it becomes difficult to form a gap between the waterproof tape 11 and the sheet member 15 and the waterproof tape 6. The water tape 6 can be firmly attached to the waterproof tape 11 and the sheet member 15.

Further, since the sheet member 15 is fixed to the recessed portion 18 of the waterproof tape 11, the back surface of the waterproof tape 11 and the back surface of the sheet member 15 are continuously formed. In addition, the appearance of the waterproof slide fastener 1 can be improved, and the touch on the back surface side of the waterproof slide fastener 1 (that is, the inner surface side to which the skin or the like hits) can be improved.

The fastener element 12 of Example 1 has the same configuration as that of the fastener element 12 disposed in the conventional general waterproof slide fastener 1. Specifically, the fastener element 12 according to the first embodiment is formed by injection molding a thermoplastic resin such as polyacetal, polyamide, polypropylene, polybutylene terephthalate, nylon, or polycarbonate.

The fastener element 12 includes an oval mesh head, a neck formed continuously from the mesh head, a neck having a constricted shape, a body formed continuously from the neck, and the neck and body. A flat shoulder portion extending in the vertical direction from the upper portion, and a leg portion extending from the tape inner side end portion of the trunk portion via the crotch portion. Further, a fitting recess for fitting the shoulder portion of the mating counterpart fastener element 12 and the tape side edge of the waterproof tape 11 is formed in the top portion (tip portion) of the meshing head.

Each fastener element 12 has a first element half part (front side element half part) arranged on the tape surface side and a second element arranged on the tape rear surface side across the tape side edge of the waterproof tape 11. Half (the back side element half). The first and second element halves of the fastener element 12 have symmetrical shapes with respect to the waterproof tape 11, are fixed to the waterproof layer 11 b of the waterproof tape 11, and are waterproof. Are connected and integrated through a connecting portion formed in the through hole of the adhesive tape 11.

The slider 20 of Example 1 is made of synthetic resin or metal and has the same configuration as that of a slider used for a conventional general waterproof slide fastener. Specifically, the slider 20 of the first embodiment has a stop mechanism, and is held rotatably on the slider body 21, a stop claw body (not shown) attached to the slider body 21, and the slider body 21. And a handle (not shown).

In this case, the slider body 21 includes the first and second blades, the guide pillars connecting the first and second blades, and the flanges disposed on the left and right side edges of the first and second blades. And a pulling attachment column erected on the first blade, and a substantially Y-shaped element guide path is formed between the first and second blades. The stop claw body has a claw portion arranged at one end of the stop claw body and a biasing portion for projecting the claw portion into the element guide path. It is configured to enter the element guide path and engage with the fastener element 12. In addition, the slider 20 of this invention does not need to be provided with the stop nail | claw body.

The first stopper (lower stopper) 30 of the first embodiment is arranged 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-based, polyester-based, polyamide-based, or vinyl chloride-based thermoplastic elastomer.

The first fastener 30 has a rectangular parallelepiped first half (back half) 31 disposed on the tape back surface and a rectangular parallelepiped first disposed on the tape front surface with the waterproof tape 11 interposed therebetween. The first half 31 and the second half 32 are connected in a through hole formed in the waterproof tape 11. It is connected via a part.

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 11 b of the waterproof tape 11 so as to straddle the left and right waterproof tapes 11. . The second half 32 of the first stopper 30 is fixed to the waterproof layer 11 b of the waterproof tape 11 across the left and right waterproof tapes 11. The first stopper 30 is formed with a thickness dimension larger than that of the fastener element 12 so that the slider 20 is brought into contact with and stopped. Here, the thickness dimension refers to a dimension in the front and back direction of the waterproof tape 11.

Furthermore, the first fastener 30 is configured by embedding a part of the element row 13 composed of the fastener elements 12 in a state where the left and right fastener elements 12 are engaged. Thereby, since the 1st fastener 30 is formed continuously with the element row | line 13, the liquid-tightness between the waterproof tapes 11 on either side between the element row | line 13 and the 1st fastener 30 is ensured stably. Is done. Moreover, since the 1st half part 31 of the 1st fastener 30 is adhering to the sheet | seat member 15 and the waterproof tape 11 so that the upper end part of the sheet | seat member 15 may be covered as mentioned above, the 1st fastener The liquid tightness between the left and right waterproof tapes 11 in the lower space portion 14a is stably secured by the 30 and the sheet member 15.

The second stopper (upper stopper) 40 according to the first embodiment is fixed to the upper end portion of the element row 13 across the right and left waterproof tapes 11 so as to define the upper end position of the sliding range of the slider 20. The same material as the first stopper 30 is formed by injection molding.

The second stopper 40 includes a first half part (back side half part) 41 arranged on the tape back side and a second half part (front side half part) 42 arranged on the tape surface side. The first and second halves 41 and 42 are connected and integrated through a connecting portion formed in a through hole (not shown) formed in the waterproof tape 11.

Further, the second stopper 40 includes a second stopper body 43 for stopping the first and second blades of the slider 20 in contact with each other, and a second stopper body on the tape back side of the waterproof tape 11. An extension part 44 extending upward from the part 43 and covering the lower end part of the sheet member 15, and a slider insertion part 45 extending downward from the second fastener body part 43 and inserted into the element guide path of the slider 20. And have.

The second fastener main body 43 is disposed on the tape front surface side and the tape rear surface side across the left and right waterproof tapes 11, and the second half portion 42 on the tape front surface side in the second fastener main body portion 43. Is raised from the second half 42 of the slider insertion portion 45, and the second stopper main body 43 as a whole has a thickness dimension larger than that of the fastener element 12. In this case, the second half 42 on the tape surface side in the second fastener main body 43 has a shape curved in front view so as to be along the shoulder edge side outer edges of the first and second blades in the slider 20. is doing.

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

The slider insertion portion 45 of the second stopper 40 is formed with a thickness dimension in the tape front and back direction smaller than that of the second stopper main body portion 43 so that the slider insertion portion 45 can be inserted into the element guide path of the slider 20. It has a substantially C-shaped form as viewed. On the inner peripheral side of the slider insertion portion 45, an accommodation portion 46 is formed that can accommodate the guide column of the slider 20 when the slider 20 is brought into contact with the second fastener main body portion 43.

Further, the slider insertion portion 45 has a ridge portion 47 projecting in the tape front and back direction at the inner peripheral edge portion thereof. When the slider 20 abuts on the second stopper main body 43 and the slider insertion portion 45 is inserted into the element guide path, the protrusion 47 is provided on the inner surfaces of the first and second blades of the slider 20. The thickness dimension is in close contact with.

Furthermore, when the slider 20 abuts on the second fastener main body 43, the slider insertion portion 45 causes at least a part of the outer peripheral side surface of the slider insertion portion 45 to contact the flange portion of the slider 20 and insert the slider. It has a form in which the front ends of the left and right element rows 13 in the portion 45 are brought into close contact with each other.

The second stopper 40 having such a configuration is such that when the slider 20 sliding in the meshing direction of the element row 13 is brought into contact with the second stopper main body 43 and stopped, the protrusion of the slider insertion portion 45 is stopped. The strip 47 is surrounded by the guide pillars of the slider 20 so as to be in close contact with the inner surfaces of the first and second blades of the slider 20, and at the same time, the left and right tip portions of the slider insertion portion 45 are brought into close contact with each other. To ensure liquid-tightness.

In addition, in this invention, the specific shape and magnitude | size of the 1st fastener 30 and the 2nd fastener 40 are not specifically limited, It can change arbitrarily. For example, in the present invention, the slider insertion portion 45 can be configured not to include the protrusion 47. In this case, in order to ensure liquid tightness between the second stopper 40 and the slider 20, the slider insertion portion 45 has the front and back surfaces of the slider insertion portion 45 disposed on the first and second blades of the slider 20. What is necessary is just to be comprised so that it may closely_contact | adhere to a board.

Further, in the waterproof slide fastener of the present invention, when the first stopper 30 is arranged as described above, the second stopper is not a stopper fixed across the right and left waterproof tapes 11, It is also possible to apply a fastener formed independently to each of the left and right waterproof tapes 11.

Next, a method for manufacturing the waterproof slide fastener 1 of the first embodiment will be described.
First, the waterproof tape 11 is prepared. Specifically, the fastener tape 11a and the film are heated in a state in which the film made of thermoplastic elastomer is superimposed on both the front and back surfaces of the fastener tape 11a obtained by weaving or knitting the fastener tape 11a. The film supplied between the pair of rollers and superposed on the front and back surfaces of the tape is welded to the fastener tape 11a. Thereby, the waterproof tape 11 provided with the waterproof layer 11b on the tape surface and the tape back surface is obtained. The waterproof tape 11 obtained at this time is formed long so that a plurality of waterproof slide fasteners 1 can be formed continuously in the tape length direction.

Subsequently, a plurality of circular through holes having predetermined dimensions are formed at predetermined intervals along the tape length direction in a range where the fastener element 12 is formed at the tape side edge of the obtained waterproof tape 11. Drill. Further, a portion of the waterproof tape 11 where the second stopper 40 is formed is formed by cutting away a part of the tape side edge of the waterproof tape 11 to form a notch. The space constituting 46 is secured.

Then, the obtained waterproof tapes 11 are combined in pairs, and a plurality of fastener elements 12 are formed by injection molding a thermoplastic resin material on the tape side edge of the waterproof tape 11. At this time, the fastener element 12 is fixed in accordance with the position of the through hole formed in the tape side edge portion of the waterproof tape 11.

Thereby, a pair of left and right fastener stringers 10 having the element rows 13 are obtained. A lower space portion 14a and an upper space portion 14b in which the fastener element 12 is not provided are provided at the lower end portion and the upper end portion of the pair of left and right fastener stringers 10 obtained in this way (see FIG. 11). (See (a)).

In addition, in the manufacturing method of the present Example 1, the area | region in which the element row | line | column 13 is formed in the tape side edge part of the waterproof tape 11 formed in elongate along the tape length direction, and the element row | line | column 13 Are formed alternately with the regions where the first space 30 and the second space 40 are injection-molded, as will be described later. The waterproof slide fastener 1 having a predetermined length dimension is obtained by cutting the waterproof tape 11 and the sheet member 15 along the tape width direction in a region where the element row 13 is not formed.

After forming the pair of left and right fastener stringers 10, a welding process is performed in which the sheet member 15 is welded so as to straddle the left and right waterproof tapes 11 on the tape back surfaces of the lower space portion 14 a and the upper space portion 14 b of the fastener stringer 10. I do. In the welding process of the sheet member 15, the waterproof tape 11 and the sheet member are pressed using the mold 25 as shown in FIGS. By applying a high frequency to 15, the sheet member 15 is welded to the left and right waterproof tapes 11.

In the welding step in the manufacturing method of the first embodiment, the sheet fixed to the lower space portion 14a of one waterproof slide fastener 1 of the waterproof slide fasteners 1 formed adjacent to each other in the tape length direction. The member 15 and the sheet member 15 fixed to the upper space portion 14b of the other waterproof slide fastener 1 are constituted by one sheet member 15, and this one sheet member 15 is a long sheet member. The waterproof tape 11 is welded to a predetermined position in a region where the element row 13 is not formed.

The mold 25 used in this welding process has a lower mold 26 and an upper mold 27, and the sheet member 15 is inserted into the facing surface 26 a facing the upper mold 27 of the lower mold 26. Rectangular first recesses 26b and second recesses 26c for inserting the element rows 13 formed in the left and right fastener stringers 10 are provided.

In this case, the length dimension (dimension in the tape length direction) of the bottom surface of the first recess 26b of the lower mold 26 is set to be approximately the same as the length dimension of the sheet member 15 before welding. Moreover, the width dimension (dimension in the tape width direction) at the bottom surface of the first recess 26b is set to be smaller than the width dimension of the sheet member 15 before welding, and the left and right side wall portions in the first recess 26b are It is formed in an inclined surface shape that is inclined upward from the bottom surface of the first recess 26 b toward the opposing surface 26 a of the lower mold 26. Further, the dimension in the tape front and back direction from the facing surface 26a of the lower mold 26 to the bottom surface of the first recess 26b, which is the depth of the first recess 26b, is set smaller than the thickness of the sheet member 15 before welding.

The second recess 26c of the lower mold 26 is formed at the upper end portion of the lower mold 26 so as to have a size capable of accommodating the element row 13 therein. The element row 13 is accommodated in the second recess 26c. By doing so, the fastener stringer 10 can be positioned with respect to the mold 25.

On the other hand, a recess (not shown) for inserting the element rows 13 formed in the left and right fastener stringers 10 is formed on the opposing surface facing the lower die 26 of the upper die 27 at the upper end portion of the upper die 27. Is formed to have a size that can be accommodated inside.

When performing the welding process of the sheet member 15 using such a mold 25, first, the flat sheet member 15 having a predetermined dimension is set in the first recess 26 b of the lower mold 26, and the sheet member 15. Is positioned at a predetermined position of the lower die 26 (see FIG. 9).

Subsequently, with the left and right fastener stringers 10 meshed with the left and right element rows 13, the tape back side of the fastener stringer 10 is the lower mold 26 on the facing surface 26 a of the lower mold 26 on which the sheet member 15 is set. It is placed so as to face the facing surface 26 a and the sheet member 15. At this time, by accommodating the element row 13 of the fastener stringer 10 in the second recess 26c of the lower mold 26, the fastener stringer 10 is positioned at a predetermined position.

Thereafter, the upper mold 27 is placed on the tape surface side of the left and right fastener stringers 10 (see FIG. 10), and the upper mold 27 and the lower mold 26 are used to press the sheet member 15 and the waterproof tape 11 in close contact with each other. However, high frequency is applied to the vicinity of the boundary surface between the sheet member 15 and the waterproof tape 11 for heating. Thereby, the sheet member 15 is welded to a predetermined position of the waterproof tape 11 (see FIG. 11B).

At this time, since the left and right side wall portions of the first recess 26b of the lower mold 26 are formed in an inclined surface shape as described above, the gradually decreasing portion 8 is formed on the sheet side edge portion 17 of the sheet member 15 after welding. It is formed. Further, the waterproof tape 11 is bent more flexibly due to the fact that the waterproof tape 11 is configured to be more flexible than the sheet member 15 and the sheet member 15 contracts during cooling, as shown in FIGS. 3 and 4. As described above, the recessed portion 18 to which the sheet member 15 is fixed is formed on the back side of the waterproof tape 11 after welding.

After performing the welding process of the sheet member 15 as described above, the slider 20 is attached to the element row 13 of the pair of left and right fastener stringers 10. Then, the 1st fastener 30 and the 2nd fastener 40 are each formed in the upper end part and the lower end part of the said fastener stringer 10 by injection-molding a thermoplastic elastomer.

When forming the first stopper 30 and the second stopper 40, first, the circular through-hole 19 is formed at a predetermined position in the formation area of the first stopper 30 and the formation area of the second stopper 40, It forms in the waterproof tape 11 or the waterproof tape 11 and the sheet | seat member 15 (refer (c) of FIG. 11). Subsequently, the first stopper 30 and the second stopper 40 are respectively formed at predetermined positions by injection-molding the thermoplastic elastomer so as to cover the formed through hole 19 ((d) in FIG. 11). See).

At this time, the first stopper 30 is formed on the tape back surface side and the tape surface side of the waterproof tape 11 so as to embed the lower end portion of the element row 13 and partially cover the upper end portion of the sheet member 15. Is done. As a result, the first stopper 30 and the sheet member 15 are continuously arranged in a state of straddling between the right and left waterproof tapes 11 from the lower end of the element row 13 to the lower end edge of the waterproof tape 11 in the tape length direction. Therefore, the liquid tightness between the waterproof tapes 11 in the region below the element row 13 is ensured.

The second fastener 40 is waterproof so that the slider insertion portion 45 is continuous from the element row 13 in the upper space portion 14 b of the fastener stringer 10 and the extension portion 44 partially covers the lower end portion of the sheet member 15. It is formed on the tape 11. In this case, the sheet member 15 to which the extending portion 44 of the second stopper 40 is fixed is arranged up to the upper end edge of the waterproof tape 11. Therefore, when the slider 20 comes into contact with the second stopper 40 and stops, the protrusion 47 of the slider insertion portion 45 comes into close contact with the inner surfaces of the first and second blades of the slider 20, thereby The liquid tightness between the waterproof tapes 11 in the upper region 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 length direction of the waterproof tape 11. Thereafter, the waterproof tape 11 and the sheet member 15 are cut along a tape width direction at a predetermined position in a region where the element row 13 is not arranged, so that the present embodiment as shown in FIGS. 1 and 2 is performed. The waterproof slide fastener 1 of Example 1 is manufactured.

In the present invention, the manufacturing method of the waterproof slide fastener is not particularly limited. For example, in the present invention, when the waterproof slide fastener 1 is manufactured, the molding process of the first stopper 30 and the second stopper 40 can be performed separately. In addition, after producing a long waterproof tape, the long waterproof tape is cut into a predetermined length, and then a fastener element is formed on the waterproof tape of a predetermined length, It is also possible to independently manufacture the waterproof slide fasteners one by one by sequentially performing welding and molding of the first stopper and the second stopper. Further, the timing and means for attaching the slider 20 to the left and right element rows 13 are not particularly limited.

And the waterproof slide fastener 1 of the present Example 1 manufactured by the above methods is attached to the opening part or opening / closing part of the fastener adherend 3 such as a wet suit, as described above. A waterproof product 5 as shown in FIG.

In this case, in the waterproof slide fastener 1 in the waterproof product 5, the tape surfaces (second tape surfaces) of the left and right waterproof tapes 11 are welded by high frequency to the back side of the periphery of the opening in the fastener adherend 3. It is attached to the fastener adherend 3 by being glued with an adhesive, and is further sewn to the fastener adherend 3 with the sewing thread 4 by sewing. .

Further, in order to close the needle hole formed by the sewing and to improve the waterproof property of the waterproof slide fastener 1 and the fastener adherend 3, the waterproof slide fastener 1 and the fastener adherend 3 are waterproof on the back side. The waterproofing tape 6 (also referred to as an adhesive tape or a seam tape) is stuck at four locations on the top, bottom, left and right so as to straddle the adhesive tape 11 and the fastener adherend 3. In this case, the waterproof tape 6 is configured by forming an adhesive layer on one surface of the woven or knitted tape.

In the waterproof product 5 manufactured in this way, as described above, the gradually decreasing portions 8 are formed on the left and right sheet side edge portions 17 of the sheet member 15 arranged in the waterproof slide fastener 1, thereby waterproofing. The step formed between the adhesive tape 11 and the sheet member 15 can be made extremely small. Furthermore, since the sheet member 15 is fixed to the recessed portion 18 of the waterproof tape 11, the tape back surface of the outer edge of the waterproof tape 11 and the back surface of the sheet member 15 are one continuous surface. Can be formed.

Thereby, in the back surface side of the lower end part of the waterproof slide fastener 1, it extends across the tape back surface of the waterproof tape 11 and the back surface of the sheet member 15 (that is, so as to cross the waterproof tape 11 and the sheet member 15). ) Since the waterproofing tape 6 can be firmly adhered and adhered, it is difficult to form a gap that allows water to enter between the waterproof tape 11 and the sheet member 15 and the waterproofing tape 6.

Accordingly, when the waterproof product 5 is used, water is transmitted from the surface side of the fastener adherend 3 to the needle hole formed in the waterproof tape 11 and the sheet member 15 and the sewing thread 4 inserted through the needle hole. However, it is possible to prevent the water from entering the back side of the waterproof slide fastener 1 by blocking the water with the waterproof tape 6.

The waterproof slide fastener according to the present invention is not limited to the form of the waterproof slide fastener 1 according to the first embodiment described above. For example, the waterproof slide fastener 1a according to the modification shown in FIG. Is included.

In the waterproof slide fastener 1a shown in FIG. 12, the waterproof tape 51 is different from the waterproof tape 11 in which the waterproof layers 11b are formed on both the front and back surfaces of the fastener tape 11a as in the first embodiment. The waterproof layer 51b is formed only on the tape surface (second tape surface) of the fastener tape 51a. In addition, in this invention, it is also possible to employ | adopt the waterproof tape in which the waterproof layer is formed only in the tape back surface (1st tape surface) of a fastener tape.

The sheet member 52 in this modified example has a surface on which the waterproof layer 51b is disposed in the lower space portion and the upper space portion of the waterproof tape 51 (in this modified example, the surface of the waterproof tape 51 (second surface). On the tape surface)) side, it is secured across the left and right waterproof tapes 51.

Further, the sheet side edge portion 53 of the sheet member 52 has a form of a gradually decreasing portion 8 that gradually decreases the thickness dimension (the dimension in the tape front and back direction) of the sheet member 52 toward the outside in the tape width direction. The gradually decreasing portion 8 is formed on substantially the entire length of the sheet member 52 in the tape length direction. The gradually decreasing portion 8 may be formed only in a partial range of the sheet member 52 in the tape length direction.

In this case, the tape portion to which the sheet member 52 of the waterproof tape 51 is fixed is not formed with a recessed portion as in the first embodiment, and the right and left waterproof tapes 51 have a transverse cross section. When viewed, the tape has a substantially straight shape (a shape not bent in the tape front and back direction) over the entire tape width region.

Even in the waterproof slide fastener 1a according to such a modification, the taper surface of the waterproof tape 51 and the sheet member are formed by forming the gradually decreasing portions 8 at the left and right sheet side edge portions 53 of the sheet member 52. It is comprised so that the surface of 52 may mutually continue. Thereby, for example, when the waterproof adherence tape 3 is overlapped on the back surface side of the waterproof slide fastener 1a and sewing is performed, when the waterproof tape is adhered to the surface side of the waterproof tape 51 and the sheet member 52, for example. Since the water-stopping tape can be brought into close contact with the surface of the waterproof tape 51 and the surface of the sheet member 52, water enters between the water-proof tape 51 and the sheet member 52 and the water-stopping tape. It is difficult to form such a gap. Therefore, the waterproof slide fastener 1a according to this modification is also excellent in water tightness.

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

In Example 2, the form of the sheet member fixed to the lower space part and the upper space part of the waterproof slide fastener is different from that of Example 1 described above, and the waterproof slide other than the form of the sheet member is used. The configuration of the fastener is the same as in the first embodiment. Therefore, in the second embodiment, parts and members having substantially the same configuration as in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

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

The sheet member 55 includes a sheet main body portion 56 disposed in a central portion in the tape width direction and sheet side edge portions 57 disposed on both the left and right sides of the sheet main body portion 56. Further, the left and right sheet side edge portions 57 in the second embodiment have a first side edge portion 57a having a form of a gradually decreasing portion 8 in which the thickness dimension of the sheet member 55 is gradually decreased toward the outside in the tape width direction, The first side edge portion 57a is arranged at the upper end portion on the element row 13 side, and the thickness dimension of the sheet member 55 is decreased more rapidly than the first side edge portion 57a toward the outside in the tape width direction. 2 side edge part 57b. For this reason, the sheet member 55 has the gradually decreasing portion 8 over a partial range in the tape length direction at the left and right side edge portions.

As described above, since the gradually decreasing portions 8 are formed on the left and right first side edge portions 57a of the sheet member 55 of the second embodiment, the thickness dimension of the sheet main body portion 56 of the sheet member 55 is increased to some extent. However, the level | step difference formed between the waterproof tape 11 and the sheet member 55 can be made very small, and the tape back surface of the waterproof tape 11 and the back surface of the sheet member 55 can be made to continue smoothly.

Further, the second side edge portion 57b in the sheet member 55 of the second embodiment has a side end surface arranged so as to be substantially perpendicular to the back surface of the sheet member 55, as shown in FIG. By this side end face, the thickness dimension of the sheet member 55 is more rapidly reduced than the gradually decreasing portion 8 of the first side edge portion 57a. As will be described later, the second side edge portion 57b has a lower mold in order to stably position the sheet member 55 at a predetermined position of the lower mold 66 when the sheet member 55 is welded using a mold. 66 is formed by a protrusion 67b disposed on the side edge of the first recess 66b.

In addition, when manufacturing the waterproof slide fastener 2 in the present Example 2, as will be described later, the sheet member 55 and the waterproof tape 11 are intermediate (not limited to the middle) in the tape length direction of the fastener tape. 13, the lower end portion of the sheet member 55 (the lower end portion of the waterproof tape) is formed with a protrusion 67 b disposed on the lower mold 66 in FIG. 13. There is no two side edge 57b.

On the other hand, the sheet member 55 disposed in the upper space portion in the second embodiment is fixed to a region including a recessed portion formed in the upper end portion of the waterproof tape 11 although not shown. Further, the sheet member 55 disposed in the upper space portion is similar to the sheet member 55 disposed in the lower space portion, on the left and right sides of the sheet main body portion and the sheet main body portion disposed in the central portion in the tape width direction Further, the left and right sheet side edges are on the element side 13 side of the first side edge part and the first side edge part. The second side edge portion is disposed at the lower end portion and has a thickness dimension of the sheet member that is decreased more rapidly than the first side edge portion toward the outside in the tape width direction.

When manufacturing the waterproof slide fastener 2 of the second embodiment in which the sheet member 55 as described above is fixed to the waterproof tape 11, a mold having a lower mold 66 as shown in FIG. The welding process of the sheet member 55 is performed. In the second embodiment, as in the first embodiment, a plurality of waterproof slide fasteners 2 are continuously formed along the length direction of the long waterproof tape 11, and then the waterproof tape is used. 11 and the sheet member 55 are cut along a tape width direction at a predetermined position (position of an intermediate portion in the length direction) in a region where the element row 13 is not disposed, thereby providing a plurality of waterproof slide fasteners 2. The method of manufacturing is adopted.

The mold used in the welding process of the sheet member 55 has a lower mold 66 and an upper mold (not shown), and the upper mold used in the welding process of the sheet member 15 in the above-described first embodiment. 27 (see FIG. 8) is used. On the other hand, the upper mold facing surface 66a of the lower mold 66 of the second embodiment is formed in the first recess 66b for inserting the sheet member 55 and the left and right fastener stringers 10 as shown in FIG. A second recess 66c for inserting the element row 13 is provided.

In this case, the left and right side wall portions of the first recess 66b of the lower mold 66 are disposed at the upper end portion and the lower end portion so as to sandwich the inclined surface portion 67a disposed in the central region in the tape length direction and the inclined surface portion 67a. The protruding portion 67b is formed. The inclined surface portion 67a is formed in an inclined surface shape that inclines upward from the bottom surface of the first recess 66b toward the upper mold facing surface 66a of the lower mold 66. The protruding portion 67b is formed so as to protrude inward in the width direction from the inclined surface portion 67a. The distance between the left and right protrusions 67b formed at the upper end of the first recess 66b and the distance between the left and right protrusions 67b formed at the lower end are the widths in the sheet member 55 before welding. It is set to approximately the same size as the direction dimension.

When performing the welding process of the sheet member 55 using such a mold, the sheet member 55 is set in the first recess 66b of the lower mold 66 as shown in FIG. At this time, the seat member 55 is stably held at a predetermined position with respect to the lower mold 66 by being fitted and locked between the left and right projecting portions 67b arranged at the upper and lower ends of the first recess 66b. Is positioned.

Next, in a state where the left and right fastener stringers 10 are engaged with the left and right element rows 13, the tape back surface side of the fastener stringer 10 is the lower mold on the upper mold facing surface 66 a of the lower mold 66 on which the sheet member 55 is set. 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 tape surface side of the left and right fastener stringers 10, and the sheet member 55 and the waterproof tape 11 are waterproofed while pressing the sheet member 55 and the waterproof tape 11 in close contact with each other. A high frequency is applied to the vicinity of the boundary surface of the adhesive tape 11 to heat.

Thereby, the sheet member 55 is stably welded to a predetermined position of the waterproof tape 11. In this case, since the slope portions 67a are formed on the left and right side wall portions of the first recess 66b of the lower die 66 as described above, the left and right first side edge portions 57a of the sheet member 55 after welding are gradually reduced. The portion 8 is stably formed.

The waterproof slide fastener 2 of the second embodiment manufactured by performing the welding process of the sheet member 55 as described above is welded to the fastener adherend 3 by high frequency as in the case of the first embodiment. Or by being attached using an adhesive, and then sewn to the fastener adherend 3 by sewing. Further, a waterproof product is manufactured by applying a waterproof tape to the waterproof slide fastener 2 and the back surface of the fastener adherend so as to straddle the waterproof tape 11 and the fastener adherend.

And in the waterproof product manufactured in this way, although the needle holes are formed in the waterproof tape 11 and the sheet member 55 by sewing, the water-stopping tape is the back surface of the waterproof tape 11 and the back surface of the sheet member 55. Since the water is firmly attached to the water, water can enter from the surface side of the fastener adherend to the back side of the waterproof slide fastener 2 via the needle hole and the sewing thread inserted through the needle hole. Can be prevented.

1,1a Waterproof slide fastener 2 Waterproof slide fastener 3 Fastener adherend 4 Sewing thread 5 Waterproof product 6 Water-stop tape (adhesive tape)
DESCRIPTION OF SYMBOLS 8 Decrease part 10 Fastener stringer 11 Waterproof tape 11a Fastener tape 11b Waterproof layer 12 Fastener element 13 Element row 14a Lower space part 14b Upper space part 15 Sheet member 16 Sheet main part 17 Sheet side edge 18 Recessed part 19 Through-hole 20 Slider 21 Slider body 25 Mold 26 Lower mold 26a Opposing surface 26b First recess 26c Second recess 27 Upper mold 30 First stop (lower stop)
31 1st half (back side half)
32 Second half (front side half)
40 Second stop (upper stop)
41 1st half (back side half)
42 Second half (front half)
43 Second fastener main body 44 Extension portion 45 Slider insertion portion 46 Storage portion 47 Projection portion 51 Waterproof tape 51a Fastener tape 51b Waterproof layer 52 Sheet member 53 Sheet side edge portion 55 Sheet member 56 Sheet main portion 57 Sheet side Edge 57a First side edge 57b Second side edge 58 Recessed portion 66 Lower die 66a Upper die facing surface 66b First recess 66c Second recess 67a Slope portion 67b Projection portion H1, H2 Thickness dimension

Claims (8)

1. A plurality of synthetic resin fastener elements (12) are injection-molded on the opposing tape side edges of the left and right waterproof tapes (11) having a waterproof layer (11b) on at least one of the first and second tape surfaces. A pair of fastener stringers (10), a slider (20) slidably attached along an element row (13) comprising a plurality of fastener elements (12), and at least one end of the element row (13) The fastener stringer (10) is provided at both ends in the length direction of the fastener element (12 ) Is not disposed, and one of the waterproof tapes (11) in the space (14a, 14b) on the side where the fastener (30, 40) is disposed is provided. A sheet member (15,55) made of thermoplastic resin or thermoplastic elastomer is provided on the tape surface side. Fastened across the waterproof tape (11) on the left and right, and the fastener (30, 40) covers the part of the sheet member (15, 55) and is fixed to the waterproof tape (11). Waterproof slide fastener (1,2)
   The sheet member (15, 55) is a gradually decreasing portion that gradually decreases the thickness dimension in the tape front and back direction toward the outside in the tape width direction over at least a part of the tape length direction at the left and right side edge portions. (8) A waterproof slide fastener characterized by comprising:
2. The sheet member (15, 55) is fixed to a recess (18) formed so that one tape surface side of the waterproof tape (11) is recessed in a concave shape and the other tape surface side is raised. The waterproof slide fastener according to claim 1.
3. In a cross-sectional view of the waterproof slide fastener (1, 2), from the center position in the tape front and back direction at the tape outer edge of the waterproof tape (11) to the outer surface of the sheet member (15, 55) The maximum thickness dimension (H1) in the tape front and back direction is the maximum thickness dimension in the tape front and back direction from the center position to the other tape surface of the tape portion to which the sheet member (15, 55) is attached ( The waterproof slide fastener according to claim 2, wherein the waterproof slide fastener is set smaller than H2).
4. The left and right side edge portions of the sheet member (55) are disposed on the first side edge portion (57a) ridge where the gradually decreasing portion (8) ridge is formed and the end portion on the element row (13) side, The second side edge portion (57b) is formed by reducing the thickness dimension of the member (55) toward the outer side in the tape width direction more rapidly than the first side edge portion (57a). The waterproof slide fastener according to any one of 1 to 3.
5. The fastener (30) is disposed at an end portion on the side in which the slider (20) is slid so as to separate the element row (13), and a part of the fastener element (12) 5. The waterproof slide fastener according to claim 1, wherein the waterproof slide fastener is embedded.
6. The stopper (40) is disposed at an end portion on the side in which the slider (20) is slid so as to close the element row (13), and the slider (20) is brought into contact with the stopper (40). A main body part (43) to be stopped and a slider insertion part (45) arranged from the main body part (43) toward the element row (13) and inserted into the element guide path of the slider (20); The waterproof slide fastener according to any one of claims 1 to 4, comprising:
7. The waterproof slide fastener according to any one of claims 1 to 6, wherein the fastener (30, 40) is fixed to both one end side and the other end side of the element row (13).
8. A second surface of the waterproof slide fastener (1, 2) scissors according to any one of claims 1 to 7 is sewn on the first surface side of the fastener adherend (3) scissors and is sewn. The water-stopping tape (6) 被覆 that covers the needle hole formed by is stuck across at least one tape surface of the waterproof tape (11) and the outer surface of the sheet member (15,55) Waterproof product characterized by

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