JPH058Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to an airtight and waterproof slide fastener that is attached to the opening and closing openings of diving suits, water life preservers, and the like.

Conventional technology The waterproof tape conventionally used for airtight and waterproof slide fasteners is made by impregnating a wide fiber base cloth with adhesive in consideration of productivity, then coating it with synthetic rubber, etc., and then cutting it into appropriate dimensions. It was manufactured by cutting with a slitter. (See Figure 6) Problems that the invention aims to solve Conventional waterproof tapes use a high-density base fabric to obtain tape strength.
In addition, because it is woven using warp threads of the same diameter across the entire width, coating materials such as adhesives and synthetic rubber used for waterproofing do not penetrate into the inside of the base fabric, so it is difficult to cut it with a slitter. This has been a problem because the end portions come into sliding contact when the slider is opened and closed, and the warp threads become frayed due to hand contact, which can impede the operation of the slider and lead to a decline in product quality.

Therefore, the present invention aims to solve the conventional problems and provide an airtight waterproof slide fastener that prevents the base fabric from fraying without reducing the strength of the waterproof tape. .

Means for Solving the Problems This invention aims to solve the conventional problems by first
As shown in the figure, a pair of fasteners is constructed by bending one side edge of a waterproof tape 2 made by coating a textile base fabric 3 with an elastic waterproof layer 8, and attaching a fastener 14 to the bent part 10. In an airtight and waterproof slide fastener comprising stringers 1, 1 and a slider 17 that disengages the opposing interlocking teeth 14 and closely separates the opposing upper and lower bent portions 11, 12 from each other, the waterproof tape 2 is folded upward. By changing the thread density or thread thickness of the base fabric 3 at the end 9 of the curved portion 11 to create a coarser texture, the fraying of the base fabric at the end can be prevented without reducing the strength of the waterproof tape. It is designed to prevent this.

Embodiments Hereinafter, embodiments of the airtight and waterproof slide fastener of the present invention will be described based on drawings.

FIG. 1 shows a state in which an airtight and waterproof slide fastener (hereinafter simply referred to as slide fastener) according to an embodiment of the present invention is partially opened by a slider, and shows a pair of fastener stringers 1, 1.
is constituted by a waterproof tape 2, one side edge of the waterproof tape 2 is bent, and a hook 14 is attached to the bent portion 10 by being clamped by a hook clamp element 16. and slider 1
7 to mesh the fastening teeth 14, and at the same time press and seal the opposing upper and lower bending parts 11 and 12 of the tape bending part 10, thereby imparting airtight and waterproof properties to the slide fastener.

FIG. 2 shows a cross section of the fastener stringer 1 in a state in which the fastener stringers 1 are meshed together. It is coated with polyvinyl chloride resin, polyurethane resin, etc. to provide waterproof properties, and one side edge facing each other is bent upward to form a horizontal Ω-shape. A waterproof tape 2 that forms the fastening tooth holding portion 13 by holding the fastening tooth 14 in this fastening tooth holding portion 13 such that its interlocking head 15 protrudes.
A fastening tooth 14 is attached by being clamped by a fastening tooth clamping element 16 from the outside. When the interlocking teeth 14 are engaged, the upper and lower bent portions 11 and 12 are pressed and sealed together to form an airtight and waterproof state.

The slide fastener is opened and closed by guiding the bending part 10 to which the fastening teeth 14 are attached by the guiding path 18 of the slider 17. Since there are parts 11 and 12, the slider guideway 18
has an upper bent portion 11 at its top as shown in FIG.
A guide hole 19 is formed through which the end of the guide hole 19 passes, and a slit is formed at the bottom thereof through which the lower bent portion 12 passes. The bent portion 10 is brought into sliding contact with the guide path 18 of the slider each time the slide fastener is opened and closed. In particular, the end portion 9 of the upper bent portion 11 is connected to the warp threads constituting the base fabric 3 of the waterproof tape 2. 4. Since the weft yarn 5 is exposed, it is likely to come into sliding contact with the guide hole 19 each time the slider 17 is operated and become frayed. The slider 17 can be operated by making the density of the warp threads 4 of the cloth coarse, or by using thin warp threads only in that part to reduce the exposed warp threads 4, and by improving the penetration of the adhesive 7 and coating material 8 to prevent fraying. This is to ensure that there is no hindrance.

Next, the end 9 of the upper bent part of the waterproof tape of the present invention
To explain the structure of the 4th part through its manufacturing method,
Figures A to D show the manufacturing process of the waterproof tape. When weaving the base fabric 3 constituting the waterproof tape 2, the upper folded part 11 is cut in advance using a slitter or heat seal. The base fabric 3 is woven using warp threads 4a that are thinner than the warp threads 4 of other parts of the base fabric 3, as shown in FIG.
Next, as shown in FIG. 4B, an adhesive 7 is impregnated as a pretreatment. At this time, the area 6a where the thin warp threads 4a are used has a rough texture, so that the adhesive 7 penetrates better than other parts, and the thread is bonded to the core. Next, as shown in FIG. 4C, both sides of the base fabric 3 are coated with a coating material 8 such as synthetic rubber, polyvinyl chloride resin, polyurethane resin, or the like. Since the portion 6a using the thin warp threads 4a has a rough texture, the synthetic rubber or resin coating material 8 also penetrates into the interior, forming a thick coating layer. Next, as shown in FIG. 4D, the waterproof tape 2 for fastener stringers is completed by cutting by a slitter or heat sealing at the portion 6a using the thin warp threads 4a. The cut end portion 9 of the waterproof tape 2 manufactured in this way has the adhesive 7 and the coating material 8 well penetrated into the base fabric 3, and the coating layer is formed thickly. Warp 4 exposed from the cut of section 9
In addition, the fibers of the thread are hardened with adhesive 7, and the structure is such that it does not easily fray even if it is slid into contact with the guide hole 19 of the slider. As another example, instead of weaving the part that will become the end part 9 of the upper bent part 11 using the thin warp threads 4a, the warp threads 4 of the same thickness as the other parts are used to reduce the number of warp threads to increase the density. Even if it is roughened, the same effect can be obtained. In addition, as shown in FIG. 5, the warp threads 4 are not arranged in the portion 6b of the upper bent portion 11 that becomes the end 9, and after processing with the adhesive 7 and coating material 8, the portion 6b is woven with a slitter. It may also be cut.

As described above, the present invention uses warp threads 4a that are thinner than other parts at the end part 9 of the upper bent part 11 of the waterproof tape 2, but by reducing or eliminating the number of warp threads, the end part 9 By reducing the number of threads exposed from the cut end and by allowing the adhesive 7 and coating material 8 to easily penetrate into the threads in the area, the occurrence of fraying of the warp threads is prevented without reducing the strength of the waterproof tape. It was designed to do so. The present invention can also be applied to knitted fabrics in addition to woven base fabrics consisting of warp and weft yarns.

Effects of the invention The present invention has the above-mentioned structure, and only the end of the upper bent part where no tension is applied to the waterproof tape.
Because the density or thickness of the threads in the base fabric is changed and the fabric is coarsely woven, there are fewer threads exposed from the ends, and the adhesive and coating material are applied to the threads of the base fabric at the ends to the inside. Since it can be penetrated well, it has an excellent practical effect of preventing threads from fraying without reducing the strength of the waterproof tape itself.

[Brief explanation of drawings]

Fig. 1 is a perspective view of the airtight and waterproof slide fastener of the present invention, Fig. 2 is a sectional view taken along the - line in Fig. 3, Fig. 3 is also a plan view, and Fig. 4 A to D are waterproof properties of the present invention. A cross-sectional view showing the manufacturing process of the tape, FIG. 5 is a cross-sectional view of another embodiment of the waterproof tape, and FIG.
The figure is a sectional view of a known waterproof tape. 1... Fastener stringer, 2... Waterproof tape, 3... Base fabric, 4, 4a... Warp, 5...
Weft thread, 9... End portion, 10... Bent portion, 14... Hook tooth, 16... Hook tooth clamp element, 17... Slider, 19... Guide hole.

Claims (1)

[Scope of utility model registration request] Bend one side edge of the waterproof tape 2, which is made of a textile base fabric 3 and coated with an elastic waterproof layer 8.
A pair of fastener stringers 1, 1 with fastening teeth 14 attached to the bent portions 10, and the opposing upper and lower bent portions 11, while disengaging the opposing fitting teeth 14,
12 and a slider 17 that closely separates them from each other.
An airtight waterproof slide fastener characterized in that the thread density or thread thickness of the base fabric 3 at the end 9 of the upper folded part 11 of the waterproof tape 2 is changed to have a rough texture.