JP3126987U - 3D flexible hook-and-loop fastener - Google Patents

Abstract

Provided is a hook-and-loop fastener having not only planar flexibility but also three-dimensional flexibility.
A hook-and-loop fastener tape is spirally wound around a flexible linear core, and the hook-and-loop fastener tape is formed by joining the linear core and the hook-and-loop fastener tape. A three-dimensional flexible hook-and-loop fastener that is spirally wound around the body.
[Selection] Figure 2

Description

  The present invention relates to a hook-and-loop fastener, and more particularly to a hook-and-loop fastener that is excellent in three-dimensional flexibility, that is, flexibility.

A hook-and-loop fastener is widely used as a locking member, but is often used in the form of a small piece or a tape. These surface fasteners are flexible in plan, but cannot have three-dimensional flexibility.
As hook-and-loop fasteners are used in many applications, there is an increasing demand to follow and lock complicated shapes such as clothing and automobile seat covers. When a hook-and-loop fastener is used as a long linear locking member, not as a substitute for a button in clothing or a seat cover, a hook-and-loop fastener with three-dimensional flexibility that can follow a complicated shape is required. ing.

  Such a three-dimensional flexible hook-and-loop fastener is disclosed in Japanese Patent Application Laid-Open No. 7-186160. That is, a rod-like object or a tube-like object having a circular cross section or a shape close thereto is used as a core material, The hook-and-loop fastener tapes are obtained by arranging them in a spiral shape or in the longitudinal direction of the core material or by arranging them in the circumferential direction. In the structure described in the publication, in which a surface fastener tape is spirally wound around a core body, the spiral surface fastener tape to be wound is wound without a gap. The hook-and-loop fastener obtained by the above technique has considerable flexibility, but does not yet have sufficient three-dimensional flexibility.

JP-A-7-186160 (paragraph 0016 and FIG. 3)

  The present invention relates to a hook-and-loop fastener particularly excellent in three-dimensional flexibility that can be used for many applications, and has three-dimensional flexibility and a certain degree of stretchability. Thus, it is possible to provide a new locking member for a field where it is required to follow and lock a complicated shape, such as clothing, a seat cover, or the bundling field where simple and elastic properties are required.

  That is, the present invention is a surface fastener formed by spirally winding a surface fastener tape around a flexible linear core, and joining the linear core and the surface fastener tape. It is a three-dimensional flexible hook-and-loop fastener made of plastics having a JIS hardness of A90 or less, and the hook-and-loop fastener tape is spirally wound around the linear core with a gap.

  Preferably, the linear core is made of plastics having a JIS hardness of A90 or less, and in the three-dimensional flexible surface fastener, the area of the gap portion between the spirals of the surface fastener tape and This is the case where the area ratio of the hook-and-loop fastener tape is in the range of 1: 1 to 1:10, and the bending resistance of the linear core is 2N or less as measured by the handle ohm method. The hook-and-loop fastener tape wound around the linear core is one or more hook-and-loop fastener tapes selected from the group consisting of hook hook-and-loop fasteners, loop hook-and-loop fasteners and hook-and-loop mixed hook-and-loop fasteners. This is a case where the linear core has a hollow portion and a cable is inserted through the hollow portion.

  The hook-and-loop fastener according to the present invention is more flexible than the hook-and-loop fastener having the three-dimensional flexibility described in the above-mentioned prior art and has a rod-like shape. For example, the hook-and-loop fastener of the present invention having hook hook-and-loop fasteners on the surface as a hook-and-loop fastener is locked in an arbitrary shape on a cloth-covered wall functioning as a loop member, a carpet floor, etc. For example, a loop surface fastener integrated with a back surface such as a decorative member or a display member can be locked. Even if the decorative member or the display member has a circular shape or a complicated shape, the hook-and-loop fastener of the present invention can be bent and arranged in accordance with the shape, so that the attachment member can be easily and sufficiently locked. it can. With conventional tape-shaped surface fasteners and small surface fasteners, many tape-shaped surface fasteners are attached to match the contours of the complex-shaped attachment members, which is laborious and inconvenient. The inconvenience is eliminated by the hook-and-loop fastener of the present invention.

  When used as a locking member for an automobile seat cover, if the seat cushion has a three-dimensionally complicated shape, the conventional tape-shaped surface fastener member does not have three-dimensional flexibility. The cushion cover material could not be brought into close contact with the cushion and locked. The hook-and-loop fastener of the present invention is soft and has three-dimensional flexibility, so it is possible to easily prepare a cover member corresponding to a locking member provided on the cushion side of a complicated shape, and it has excellent design. High quality sheets can be produced.

Furthermore, if the hook and loop loop fasteners are combined with the hook and loop hook fasteners of the present invention, the hook and loop mixed type hook fasteners will be self-engaged if the hook and loop surface fasteners of the present invention are bent and brought into contact with each other. It can also be used as an elastic bundle.
Furthermore, when a linear core having a hollow portion is used, when a cable or the like is inserted into the hollow portion and a hook surface fastener is wound, the position of the cable on the indoor loop carpet can be easily fixed. it can. Further, by providing the hollow portion, it is possible to reduce the feeling of rolling of the surface fastener of the present invention.

The present invention will be described below with reference to the drawings.
FIG. 1 is a plan view of a hook-and-loop fastener showing an example of the present invention. In the surface fastener 1 according to the present invention, a surface fastener tape 3 is spirally wound around the surface of a flexible linear core 2, and both are joined by adhesion or fusion. The hook-and-loop fastener tape 3 is wound spirally on the core body 2 with an interval (4 shown in FIG. 1). In the flexible rod-shaped surface fastener described in Patent Document 1 above, the surface fastener tape is wound around the core body without any gaps. Therefore, when the surface fastener is bent, it is harder than the core body. Smooth hook-and-loop tape provides resistance and its flexibility is very low.
FIG. 2 is a plan view showing a state where the hook-and-loop fastener of FIG. 1 is bent round. As shown in FIG. 2, the hook-and-loop fastener 1 of the present invention has a gap 4 between the helical hook-and-loop fastener tapes of the core, so that the hook-and-loop fastener tape 3 does not become a resistance when bent and the core is flexible. It shows sufficient flexibility depending on the nature. The hook-and-loop fastener is not limited to two-dimensional bending, and can be bent three-dimensionally. The hook-and-loop fastener shown in Patent Document 1 has no gap between the hook-and-loop hook-and-loop fastener tapes, so that it is difficult to bend it planarly as shown in FIG. In addition, FIG. 2 is a case where a loop surface fastener and a hook surface fastener are alternately arranged as a surface fastener wound in a spiral shape. Both the case having only the hook surface and the case having only the loop surface can be dealt with.

  As the flexible linear core material constituting the present invention, all flexible flexible plastics such as thermoplastic elastomer and crosslinked rubber are used as a material. For example, olefin / styrene elastomer, polyurethane elastomer, polyamide elastomer, polyester elastomer, polyether elastomer, acrylic elastomer, plasticized vinyl chloride resin, natural rubber, synthetic rubber and the like are preferable examples. When the core body and the hook-and-loop fastener tape are efficiently and collectively formed, it is desirable to join the hook-and-loop tape to the core body by fusion using the heat at the time of melt-extrusion. The material of the core. Furthermore, it is also possible to use a linear foamed resin. Softness and flexibility can be obtained by foaming.

  The cross-sectional shape of the core used in the present invention includes a circle, an ellipse, a square, a rectangle, a polygon, a trapezoid, or a hollow shape (tube) thereof. In addition, it is necessary to select the ratio of the long side to the short piece in a range where the cross-sectional shape is an ellipse or a rectangle without impairing the three-dimensional flexibility. When the cross-sectional shape approaches flat, the flexibility of the core body decreases.

  When the cross-sectional shape of the core used in the present invention is a hollow type, a floor surface or wall surface having a loop function can be obtained by inserting an optical fiber cable or the like through the hollow portion of the three-dimensional flexible hook surface fastener. Thus, it is possible to arrange and fix arbitrarily and easily without damaging the cable or the like. It is also possible to integrate a cable or the like when manufacturing the hollow core. In addition, by providing the hollow portion, as described above, the feeling of the core material is reduced, and for example, the feeling of foreign matter when used for clothing or the like is reduced. Furthermore, it can also be used as a member for floor heating or floor cooling by allowing a heat medium or a cooling medium to flow through the hollow portion as necessary.

The core preferably has a JIS hardness A90 or less. A material having a hardness of A80 or less is more preferable. It is difficult to produce a sufficient three-dimensional flexible surface fastener with a core having a hardness of A90 or higher. The core hardness is measured with a JIS A hardness meter for the core material used in the present invention.
The core preferably has a bending resistance of 2N or less. More preferably, it is 1N or less. If it is 2N or more, it will not be a surface fastener with a high degree of flexibility. The core bending resistance is measured using a handle ohmmeter type tester described in JIS L 1096 with a slot width of 60 mm. Since the bending resistance by the handle ohmmeter type tester is measured in the form of the core used, it is preferable when evaluating the flexibility of the actual surface fastener. on the other hand. JIS hardness is an important factor in selecting a core plastic material to be used.

  The thickness of the core can be appropriately selected as necessary, but in the case of a circular cross section, a diameter of about 1 mm to 10 mm can be suitably used. If the diameter is 1 mm or less, the winding work efficiency of the hook-and-loop fastener is poor, and if it is 10 mm or more, the JIS hardness is A90 or more and it is difficult to obtain appropriate flexibility. More preferably, the diameter is in the range of 2 mm to 8 mm. The cross-sectional area of the hollow part is preferably 5 to 80% of the cross-sectional area of the core body. Of course, it does not matter if one hollow portion is present in the cross section of the core material or two or more multi-hollow portions. When the cross-sectional shape of the core body is other than circular, a cross-sectional area corresponding to the cross-sectional area of the circular cross-section is a preferable range.

  The surface fastener tape constituting the present invention includes either a molded surface fastener in which an engagement element is erected integrally on a substrate, or a cloth surface fastener in which an engagement element is erected on a knitted base fabric. But you can use it. The hook-and-loop fastener can be used by combining one or more hook hook-and-loop fasteners, loop hook-and-loop fasteners, and hook-and-loop mixed hook-and-loop fasteners. The hook hook-and-loop fastener is a hook-and-loop fastener in which a hook-shaped engagement element, a mushroom-type engagement element, an arrowhead-type engagement element, and the like are erected. The loop surface fastener includes a cloth loop surface fastener in which loop-like fibers are erected on a base fabric, a napped non-woven fabric, a molded loop surface fastener in which a wavy fiber bundle is bonded to a substrate, and the like. A hook / loop mixed surface fastener is a surface fastener having both a hook-like engaging element and a loop-like engaging element on the same base fabric, and the hook-like engaging element is substantially the same height as the loop-like engaging element, Alternatively, a hook-and-loop fastener having a structure in which the hook-like engaging element is slightly lower than the loop-like engaging element is preferably used. The shape, density, and the like of each engagement element are appropriately selected according to the purpose. These surface fastener tapes can be easily obtained from commercial products.

As a suitable example of a material combination of a flexible linear core and a hook-and-loop fastener tape, a combination of a hook-and-loop fastener tape made of olefin resin typified by polypropylene and polyethylene is fused with a flexible core made of olefin / styrene elastomer. It is mentioned from the aspect of wearability and versatility. Furthermore, in the case of further improving the engagement durability and the tensile strength, a combination of a hook-and-loop fastener tape made of polyamide resin is preferable for the flexible core made of polyurethane elastomer.
Further, when using a surface fastener tape made of general-purpose polyester fiber as a fiber material, it is an appropriate integration technique to provide a modified polyolefin hot melt layer or a modified polyester hot melt layer on the outer layer of the flexible core. .
Moreover, in this invention, as a width | variety of the hook_and_loop | surface fastener wound helically around a core body, the range of 2-6 mm is preferable. When the width is less than 2 mm, it is difficult to wind the zipper with the fastener face outward, while when the width exceeds 6 mm, the number of intervals provided is inevitably reduced, and uniform posability is possible. Flexibility cannot be obtained.

  As shown in FIG. 1 and FIG. 2, the surface fastener of the present invention is formed by spirally winding a surface fastener tape 3 on a core body 2 with a gap 4 provided. The area ratio of the surface fastener tape is preferably in the range of 1: 1 to 1:10, more preferably in the range of 1: 3 to 1: 8. If the area ratio is less than 1: 1, the surface fastener of the present invention is excellent in flexibility, but the area of the surface fastener tape, that is, the engagement element region is small, and sufficient engagement force cannot be obtained. When the area ratio exceeds 1:10, the engaging force of the surface fastener is high, but sufficient three-dimensional flexibility cannot be obtained due to the small gap.

In the present invention, the area ratio is measured by the following method.
The three-dimensional flexible hook-and-loop fastener of the present invention is arranged in a straight line in a tensionless state, photographed from directly above, the area of the hook-and-loop fastener part and the area of the gap part are measured, and the area ratio is measured.

The hook-and-loop fastener of the present invention is supplied sequentially from a bobbin or the like in a direction along the drawing direction after the linear core discharged from the extruder is drawn in the take-off direction to have a predetermined cross-sectional shape. However, it can be manufactured by a method in which the core body is wound spirally around the outer peripheral surface of the core body, and then fused or bonded while applying an adhesive. The gap on the core body can be adjusted by the winding spiral angle of the surface fastener tape.

Next, the present invention will be described with reference to examples, but the present invention is not limited to these examples.

Example 1
The core diameter is 3 mm, the JISA hardness is 70 degrees, and the width of the styrenic thermoplastic elastomer (hydrogenated triblock copolymer made of polystyrene-polyisoprene-polystyrene) is wider than the linear core with a circular cross section. A hook hook-and-loop fastener tape made of 3 mm all PP (substrate thickness 50 microns) was spirally wound and fused while providing a gap of 0.5 mm when the core was extruded to obtain a hook hook-and-loop fastener engaging member. The area ratio of the gap to the surface fastener tape was 1: 5.

Comparative Example 1
A hook hook-and-loop fastener engaging member was produced in the same manner as in Example 1 except that when the core was extruded, the spiral winding was performed without any gap and the melt was fused.

  When the minimum bending radius of the hook surface fastener engaging member of Example 1 and Comparative Example 1 is measured, the engaging member of Example 1 is 2.0 mm, and the engaging member of Comparative Example 1 is 18.3 mm. It can be seen that the example 1 is flexible and far superior to the comparative example.

The top view of the hook_and_loop | surface fastener which shows an example of this invention. The top view which shows the state which bent the hook_and_loop | surface fastener of FIG. 1 roundly.

Explanation of symbols

1: Hook fastener 2: Core body 3: Hook fastener tape 4: Gap

Claims (6)

  A hook-and-loop fastener is formed by spirally winding a hook-and-loop fastener tape around a flexible linear core, and joining the linear core and the hook-and-loop fastener tape. A three-dimensional flexible hook-and-loop fastener that is wound in a spiral with an opening.   The three-dimensional flexible hook-and-loop fastener according to claim 1, wherein the linear core body is made of plastics having a JIS hardness A90 or less.   The three-dimensional flexible hook-and-loop fastener according to claim 1 or 2, wherein an area ratio of a gap portion between the spirals of the hook-and-loop fastener tape and an area ratio of the hook-and-loop fastener tape is in a range of 1: 1 to 1:10.   The three-dimensional flexible hook-and-loop fastener according to any one of claims 1 to 3, wherein the bending resistance of the linear core is 2N or less as measured by a handle ohm method.   2. The surface fastener tape wound around the linear core is one or more surface fastener tapes selected from the group consisting of hook surface fasteners, loop surface fasteners, and hook / loop mixed surface fasteners. The three-dimensional flexible hook-and-loop fastener in any one of thru | or 4. The three-dimensional flexible hook-and-loop fastener according to any one of claims 1 to 5, wherein the linear core body has a hollow portion, and a cable is inserted into the hollow portion.

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