JPH01250201A - Manufacturing method of hook-and-loop fastener - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a method for manufacturing a highly functional hook-and-loop fastener, and is particularly useful as a method for manufacturing a male hook-and-loop fastener.

(Prior Art) Conventionally, hook-and-loop fasteners mainly utilize woven tapes, but these have the drawbacks of low productivity and high cost. In addition, in recent years, continuous extrusion molding methods (for example, Japanese Patent Publication No. 53-2
2889, Japanese Patent Publication No. 51-19386, etc.) or continuous injection molding method (Japanese Patent Publication No. 48-22768, etc.), groups of mushroom-shaped or hook-shaped protrusions (engaging elements, hereinafter referred to as ribs) are formed. A method of manufacturing a sheet for hook-and-loop fasteners has been proposed.

(Problems to be Solved by the Invention) In the former continuous extrusion molding method, the engaging element is formed by making longitudinally spaced cuts in a molded strip having longitudinal ribs, so that the head of the engaging element is formed. The shape is 2
It becomes a dimensional shape. Therefore, it is difficult to obtain a rib shape with a high engagement function.

On the other hand, in the latter continuous injection molding method, it is required that the material can be easily separated from the mold (peelability). Therefore, a mold with a strong engaging force and a large engaging element head shape is not suitable, and there are also restrictions on the material of the resin used.

A first object of the present invention is to provide a method for manufacturing a hook-and-loop fastener member using a low-cost molding method with high functionality and high productivity.

Another object of the present invention is to provide a method for manufacturing a hook-and-loop fastener member using a molding method capable of having three-dimensionally shaped engaging elements. Other objects of the present invention will become clear from the following description.

(Means for Solving Problem yA) The above object is to provide a resin molded body A having a column group without a rib head serving as a column for an engagement rib on at least one base material surface, and Prepare a continuous resin molded body B,
After arranging the molded body B so as to be in contact with the tip of the column group of the resin molded body A, and joining or bonding the A and B at the tip of the column group to integrate them, the parts between the columns of the resin molded body B are This is achieved by a method for manufacturing a hook-and-loop fastener or a hook-and-loop fastener member, which comprises cutting or cutting out a continuous portion to form a rib head.

The resin molded body A used in the present invention is shown in FIG. 9, for example. The resin molded body A is formed by a known molding method such as injection molding, press molding, or extrusion molding.
It has good precision and can usually be made by hand as an integral molding. The resin molded body A has a large number of struts (2) without rib heads, which serve as struts for engaging ribs, on at least one surface of a base material (1), which form a group and are usually arranged almost perpendicularly on the base material. It is formed in a columnar group. The tips of the columnar groups are provided with a resin molded body B, which will be described later, placed thereon and can be integrated by bonding or bonding, and are preferably located generally approximately horizontally with respect to the base material surface. The shapes of the base material (1) and the pillars that constitute the resin molded body A are arbitrary.

The resin molded body B is a sheet-like, fibrous, or string-like material that is continuous in at least one horizontal direction, and is essentially joined or combined at the tip of the column group of the resin molded body A to be integrated, The continuous portion between the struts is cut or removed to form the rib head (3) of the engagement member.

The material constituting molded body A or B is arbitrary.

Polypropylene, polyamide, polyethylene, polyvinyl chloride, polyethylene terephthalate, acrylic resin,
Thermoplastic or thermosetting resins such as polyester, polystyrene, epoxy resin, polycarbonate, polyurethane, various elastomers, and rubber are preferably used. These resins can be used alone or in combination, and various additives, reinforcing fillers, etc. can also be blended.

In the hook-and-loop fastener obtained according to the present invention, if the resin molded body A is a flat sheet, the head of the hook-and-loop fastener obtained is in the shape of a square flat plate. Further, if the resin molded product A is made of fibers or string-like, a hook-like rib head can be obtained.

In the present invention, conventional injection molding methods and extrusion molding methods
In addition to solving the problem that it is difficult to manufacture hook-and-loop fasteners that have a group of ribs with a highly functional rib shape, we also developed hook-and-loop fasteners with different rib shapes, rib hardness, and rib materials that have different functionality and good engagement. It provides a manufacturing method.

(Example) A detailed explanation will be given below with reference to side views. First, one example of a typical hook-and-loop fastener obtained by the basic manufacturing method of the present invention is shown in the first example.
As shown in the figure. The base material (1) of the hook-and-loop fastener has a large number of rib groups on at least one surface. The rib consists of a rib support (2) that is perpendicular to the base material surface and a square flat rib head (3) that is horizontal to the base material surface at the tip of the rib support. Strut (2) tip and rib, head (3)
are joined at the joint (4). Such hook-and-loop fasteners have good flexibility in the rib head and can provide smooth retention.

Next, FIG. 2 shows an example of a method for manufacturing the hook-and-loop fastener according to the present invention. A rib of a resin molded body A with resin supports, which has no rib head on at least one base material (1) surface, and has many rib supports (2) that are perpendicular to the base material (1) surface. After arranging the resin sheet-like material (3°) which is the resin molded body B so as to be in contact with the tip of the rib support (2), place the part (4) where the tip of the rib support (2) and the sheet-like material (3°) are in contact with each other. Glue and
After that, the continuous part (5) of the sheet-like material between the pillars is
The rib head (3) is formed by cutting or cutting into a square or oblique shape along the dashed line in the figure or in FIG.

The rib heads (3) may be in contact with each other, but if the continuous portion is cut out, there will be a space. Moreover, the rib head space can also be formed by stretching the base material (1) after cutting.

In addition, various resins can be applied to the resin sheet-like material (3') that becomes the rib head, as well as the base material, such as Nobeoki sheet-like material,
Sponge-like materials, net-like materials, etc. are also applicable. Joint (4)
Bonding methods include bonding with adhesives and heat fusion, as well as bonding and pressure bonding using hot air, infrared rays, high frequencies, lasers, ultrasonic waves, etc. The adhesive area may be expanded by crushing the tips of the rib supports.

FIG. 3 shows an example of a continuous manufacturing method and apparatus for a hook-and-loop fastener according to an example of the present invention. Base material (1) and rib support (2)
The resin molded body A consisting of
), and the preheating device f (12) mainly preheats the tips of the rib supports. The processing device t (10) transfers intermittently or continuously. The resin molded body B is heated by a preheating device (13) while the sheet-like material (3') is supplied to a hot pressure bonding roll (11). The molded body ASB is heated by a heating device (
The composite body whose surface is rapidly heated by step 14) and is pressed with each surface in a molten state is cooled by a cooling roll (15). After cooling and fixing, the sheet material (3°) is cut or removed perpendicularly or obliquely to the flow direction using a transverse cutting device (16) and a longitudinal cutting device (17) to form a rib head (3), and then transferred to a take-up roll. (18). It is also possible to stretch the base material after cutting in this apparatus.

An example of the fastener and manufacturing method of the present invention has been described above, and below, application examples included in the present invention will be further described with reference to the same drawing.

FIG. 4 is a diagram explaining the manufacturing steps of the example in FIG. 1, and is an example in which the sheet-like material (3'), which is the molded body B, is divided into multiple rows in the longitudinal direction, and each row is divided into multiple rows as shown in the figure. However, the sheets may be divided into two or more rows, and the divided sheets may be made of different materials, dimensions, etc.

Figure 5 shows the application of the continuous body, which is molded body B, to at least one or more fiber threads (3'), including rib supports (2).
The joint part (4) has a notched structure to improve the bonding properties, and the yarn material (3゛) is made of multifilament fiber, etc., and is curled by anisotropic yarn heating treatment or hook-like. Fig. 6 is a plan view showing an example of the application of the rib support and the rib head. Fig. 6(a) shows the addition of processing.
Figure 6(b) is an example in which the rib support (2) is made into a prismatic shape.
This is an example in which the rib head (3) is diamond-shaped.

FIG. 7 is a sectional view showing various application examples of the rib. Figure 7
(a) is an example in which a fiber sheet-like material in which fibers (6) are bound with resin is used as the material for the rib head (3). This is an example of improvement. FIG. 7(b) is an example in which the support column (2) is improved to have a tapered shape. FIG. 7(c) is an example in which a multilayer sheet including at least two layers of coating or laminate is applied to the molded body B.

Melting point, hardness, heat shrinkage rate, coefficient of friction, Young's modulus of the composition,
By changing the color, heat resistance, etc., it is possible to obtain a product with better engagement and functionality that suits the purpose.Especially when combining materials with different degrees of crystallinity and heat shrinkage, it is possible to As shown in the figure, the hook-and-loop fastener can be deformed into an umbrella shape, making it possible to improve the engagement properties. Figure 7(d) is an example of a lance-shaped or umbrella-shaped rib head (3) obtained by using a curved tape-like material or by bending it by heat treatment or the like. 7(e) and 7(f) are not sheet strips.

(Effects of the invention) As explained above, according to the manufacturing method of the present invention, highly functional hook-and-loop fasteners can be obtained, including wide hook-and-loop fasteners,
A hook-and-loop fastener having a rib head with good inter-engaging properties, particularly allowing male parts to engage with each other, is easily provided.

[Brief explanation of the drawing]

FIG. 1 is an external view showing a hook-and-loop fastener based on an embodiment, FIGS. 2, 4, and 5 are external views for explaining cut parts based on another embodiment, and FIG. 3 is an external view showing a hook-and-loop fastener according to another embodiment. The same figure showing an example of the continuous manufacturing method and device for hook-and-loop fasteners used in the example,
Figure 6 is a plan view showing an example of application of the rib head and strut;
The figure is a sectional view showing an example of the application of the rib, FIG. 8 is an external view showing an example of the application of the rib head, and FIG. 9 is an external view showing an example of the resin molded body. 1 Base material 10 Fastener transfer processing device 2
Rib support 11 Pressing roll 3 Rib head 12 Preheating device 3° molded body B 13 〃 4 Joint portion 14 Heating device 5 Cutting or excision portion 15 Cooling roll 16 Transverse cutting device 17 Vertical cutting device 18 Take-up roll Patent applicant Co., Ltd. Figure 1: Base material 2: Rib support 3, Rib head 4: Joint part 3 Figure 1: Base material 14. Heating device 11, pressure roll 12 Preheating device 13 Fig. 4 Fig. 6 Fig. 5 Fig. 7 (○l N)) IC) (d)
(e) (f) Figure 8 Figure 9

Claims (1)

[Claims] Prepare a resin molded body A having a column group without a rib head that serves as a support for an engagement rib on at least one base material surface, and a resin molded body B continuous in at least one direction, and prepare a resin molded body B that is continuous in at least one direction. While molded body B is arranged so as to be in contact with the tip of the column group, molded bodies A and B are joined or combined at the tip of the column group to integrate them, and then the continuous portion between the columns of molded body B is cut or A method for manufacturing a hook-and-loop fastener, characterized by forming a rib head by cutting.