JP3217165B2 - Hook-and-loop fastener - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hook-and-loop fastener, and more particularly to a mushroom-type hook-and-loop fastener having a remarkably large engaging strength and particularly suitable for industrial use.

[0002]

2. Description of the Related Art A hook-and-loop fastener is used for clothing, shoes, bags,
It is widely used for bags and the like, or for interiors such as fixing of house members and installation of furniture.

[0003] However, for example, there has not been found any hook-and-loop fastener for engaging large-area curtains or sheets, particularly for industrial use, which has a sufficiently large engaging strength. If the engaging force is insufficient, even if the strength of the engaged object itself is high, not only the engagement is disengaged at the engaging portion, the purpose cannot be achieved, but also an accident may be caused. .

[0004]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a hook-and-loop fastener having a large engaging strength which can be sufficiently used for industrial applications.

[0005]

SUMMARY OF THE INVENTION In view of the above circumstances, the present inventors have determined that it is difficult to significantly increase the engaging force of a hook-type hook-and-loop fastener from a structural point of view, and that the hook-type hook-and-loop fastener has a mushroom-type male face. Focusing on the hook-and-loop fastener consisting of a pile-type female surface, which factors of the male and female surfaces and each element of the base material affect the engaging force, and the range of such various factor values As a result of intensive studies on whether the combination improves the engagement force, it was surprisingly found that the selection of specific factors in a specific range significantly improved the engagement force more than the conventional one. They have found and completed the present invention.

That is, the present invention relates to a surface fastener comprising a male surface provided with a mushroom surface and a female surface provided with a pile surface, wherein the strength of the stem portion on the mushroom surface is 1 to 1;
0 kg / piece, the ratio of the diameter of the mushroom part to the diameter of the stem part is 2 to 4, the stem density is 150 to 400 / inch ² ,
Vertical strength of mushroom surface base material is 20kg / cm
The width is not less than the width, the strength in the horizontal direction is not less than 40 kg / cm width, the pile strength on the pile surface is 1-5 kg / pile, the pile density is 200-600 / inch ² , and the vertical strength of the pile surface base material is 20 kg. / Cm width or more, horizontal strength 40kg /
It is intended to provide a hook-and-loop fastener having a width of not less than a cm width.

Hereinafter, a hook-and-loop fastener according to the present invention will be described with reference to the drawings. Referring to FIG. 1, the hook-and-loop fastener (1) of the present invention comprises a male surface (2) of a mushroom type and a female surface (5) of a pile type.

First, the mushroom type male surface (2) will be described. The mushroom-type male surface is composed of a base material (3) and a stem with a mushroom (4). These materials themselves are not different from conventional ones, and as the material of the male base material,
Examples thereof include polyester, Ny (nylon), PP (polypropylene), vinylon, various acrylic types, and high-strength yarn. Also, as a material for the stem with mushroom,
Although mainly PP is used, a filament yarn using a thermoplastic resin such as PET or Ny may be used.

As a factor relating to the engaging force on the male surface, attention has been paid to the strength of the warp yarn and the weft yarn, which are components of the base material. Here, in the present specification, when the engaged objects (8) are engaged with each other as shown in FIG. 2, the boundary between the engaged objects (surface fastener portion (9)) is in the longitudinal direction. The warp yarn (in the direction of arrow Y in FIG. 2) is a warp yarn, and the direction perpendicular to that direction (in the direction of arrow X in FIG. 2)
Is called a weft thread. In particular, strength is required for shearing in the weft direction (arrow X).
While a width of 0 kg / cm or more is required, the strength in the vertical direction may be lower, and a width of 20 kg / cm or more is sufficient.

In the stem (4) with a mushroom, the stem itself must be strong, and the mushroom part (10) and the stem part (11) must be inserted from the viewpoint of insertion into the pile surface or engagement after insertion. Diameter ratio (Fig. 3
In the formula, b / a) must be in an appropriate range. Also,
If the implantation density of the stem is too large or too small, the engaging force is not exerted.

As a result of various studies, the strength of the stem portion was 1 to 10 kg / piece, the ratio of the diameter of the mushroom portion to the diameter of the stem portion (b / a) was 2 to 4, and the stem density was 150 to 150 kg.
A range of 400 / inch ² has been found to be suitable. Here, the thickness of the stem portion is directly related to the thickness if the material is the same, and can be adjusted by the thickness. For example, when using PP, which is a preferred stem material, the range of strength corresponds to a range of 250 to 500 denier.

Next, the pile female surface (5) will be described. The female face of the pile consists of the substrate (6) and the pile (7) planted on the substrate. The material itself for the pile female surface is not different from the conventional one, and as the material of the base material,
Ny, PET, PP and the like. Moreover, as a pile material, Ny, PET, PP, etc. are mentioned.

As a factor related to the engaging force on the female surface, in the base material, attention is paid to the strengths of the warp yarn and the weft yarn, which are constituent elements of the base material, as described above.
0kg / cm width or more, horizontal strength 40kg / cm
It has been found that a range greater than the width is appropriate.

[0014] Further, regarding the pile, the pile strength 1 to
5kg / pile range, pile density 200-600 / inch ²
Was found to be appropriate. The pile strength can be adjusted by the thickness in the same manner as described above. For example, when using a preferred material, Ny, the strength range corresponds to a range of 300 to 500 denier.

Further, the engaging force is also affected by the relative relationship between the male surface and the female surface, so that the density of the female surface pile is about 1.5 times the density of the male surface stem, and the male surface stem is almost engaged with the female surface pile. It is designed to match.

When the various factor values are within the ranges described above, the balance is maintained, the engaging force is significantly improved, and
When evaluated with a shear strength of x5 cm area, the conventional hook type is about 50 kg, and the conventional mushroom type is 80 kg.
The engaging force of about kg is improved to about 150 to 250 kg / 5 × 5 cm in the hook-and-loop fastener of the present invention.

The manufacturing method of such a hook-and-loop fastener itself does not differ from the conventional hook-and-loop fastener,
For example, the male surface can be manufactured by a tie double weaving method, while the female surface can be manufactured by a velvet weaving method or the like.

Since the surface fastener of the present invention thus obtained has a high strength, the surface fastener of a curing curtain or a fall prevention curtain at a building construction site, the surface fastener of ground reinforcement sheets in landfill civil engineering work, etc. It can be suitably used for industrial applications such as the field of civil engineering and construction, or the field of strong ropes for transportation which is tied when packing heavy objects.

[0019]

The present invention will be described in more detail with reference to the following Examples and Comparative Examples. Example 1 Vertical Ny420 ^d , horizontal Ny8
40 ^d, PP350 ^d as stem material, using Ny420 ^d as vertical Ny420 ^d, horizontal Ny840 ^d, pile material as the base material of the female surface, 500 a male face filament tip obtained by knotting double weave method The granules were heated at 600 ° C., granulated, and further backed with a urethane / PVC paint to fix the base material and the stem, and the base material and the pile, to obtain a mushroom-type surface fastener of the present invention. The strength of the stem on the mushroom surface of this hook-and-loop fastener is 2.8k
g / piece, the ratio of the diameter of the mushroom portion to the diameter of the stem portion is three times, the stem density is 210 / inch ² , the vertical strength of the substrate on the mushroom surface is 26 kg / cm, and the horizontal strength is 60 k.
g / cm, pile strength of pile surface is 2.3kg
/ Pile, pile density 310 / inch ² , vertical strength of pile base material 25 kg / cm, horizontal strength 55 kg / cm
When the shear strength in the horizontal direction is measured, 185 k
g / 5 × ⁵ cm ² .

[0020] As Comparative Example 1 control, using the same materials as in Example 1 except for using the weft Ny420 ^d, in the same manner as in Example 1,
A control surface fastener was obtained. The strength of the stem portion on the mushroom surface of this surface fastener is 2.8 kg / piece, the ratio of the diameter of the mushroom portion to the diameter of the stem portion is three times, the stem density is 250 / inch ² , and the base material of the mushroom surface is The vertical strength is 26 kg / cm, the horizontal strength is 25 kg / cm, the pile strength on the pile surface is 2.3 kg / piece, the pile density is 340 / inch ² , and the vertical strength of the base material on the pile surface is 2
The transverse strength was 5 kg / cm, the transverse strength was 55 kg / cm, and the transverse shear strength was 120 kg / 5 × 5 cm ² . In this case, the substrate on the mushroom surface was broken. As described above, it can be understood that the engagement force is significantly reduced when the characteristic value is out of the range of the characteristic value selected in the present invention.

[0021]

[0022]

According to the present invention, the engagement force is significantly improved,
A hook-and-loop fastener suitable for industrial use is provided.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view schematically showing a surface fastener of the present invention.

FIG. 2 is a plan view showing a state where an engaged object is engaged.

FIG. 3 is a sectional view showing a stem with a mushroom.

[Explanation of symbols]

1: hook-and-loop fastener, 2: male mushroom type male surface, 3: base material for male surface, 4: stem with mushroom, 5: pile type female surface, 6: female surface base material, 7: pile, 8: coated Engagement, 9:
Hook-and-loop fastener part, 10: mushroom part, 11: stem part

────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroki Kato 270 Taga-cho, Taga-cho, Inukami-gun, Shiga Prefecture Inside the Shiga Plant of Dynic Corporation (56) References JP-A-4-279103 (JP, A) JP-A-61 −255607 (JP, A) Japanese Utility Model Application 4-46808 (JP, U) Japanese Utility Model Application 2-98152 (JP, U) Japanese Utility Model Application Utility Model 4-115405 (JP, U) (58) Field surveyed (Int. . ^7, DB name) A44B 18/00

Claims (1)

(57) [Claims] 1. A surface fastener comprising a male surface provided with a mushroom surface and a female surface provided with a pile surface, wherein a strength of a stem portion on the mushroom surface is 1 to 10 kg / piece, and a mash with respect to a diameter of the stem portion. The ratio of the diameter of the room part is 2-4,
The stem density is 150 to 400 / inch ² , the base material for the mushroom surface is composed of a warp yarn and a weft yarn, the warp direction strength is 20 kg / cm width or more, and the weft direction strength is 40 k.
g / cm width or more, pile strength on the pile surface is 1 to 5 kg / pile, and pile density is 200 to 600 / inch.
^{2. A} hook-and-loop fastener wherein the pile surface substrate is composed of a warp yarn and a weft yarn, and the warp strength is at least 20 kg / cm width and the weft strength is at least 40 kg / cm width.