JPH04279103A - Formed touch-and-close type fastener - Google Patents

Abstract

PURPOSE:To obtain a strongly formed touch-and-close type fastener, of which the engagement elements are in high density and in high engagement, by a method wherein the basic member of a second formed touch-and-close type fastener is secured, at least on part of the substantially flat range provided on a first formed touch-and-close type fastener. CONSTITUTION:Engagement elements forming a unit engagement element line 8 for a first formed touch-and-close type fastener 7 are inserted into openings 6 provided on the intermediate line of an interval 2L between unit engagement element lines 5 for a second formed touch-and-close type fastener 4, usually on the line of an interval L, and two formed touch-and-close type fasteners 4, 7 are integrally combined. Each opening formed between the unit engagement element lines for the second formed touch-and-close type fastener may be the opening into which one engagement element is inserted or may be a slit opening into which plural engagement elements are inserted. Furthermore, the number of the unit engagement element line may be one line or a plurality of lines.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molded hook-and-loop fastener with high engagement and strength in which the density of engagement elements is increased.

0002

[Prior Art] Molded hook-and-loop fasteners have heretofore been known in which a large number of independent engaging elements each having a tip shaped like a bulging head, a hook, or a mushroom are arranged in multiple stages on at least one surface of a base material. Hook and loop fasteners are usually manufactured using melt extrusion methods (e.g.
(Japanese Patent Publication No. 51-19386, etc.) or injection molding method (For example, Japanese Patent Publication No. 48-22768, etc.).

0003

[Problems to be Solved by the Invention] However, in the conventional method of manufacturing molded surface fasteners using the melt extrusion method, engaging elements are formed by making cuts in a molded body having ribs in the longitudinal direction and then stretching it. Therefore, there are restrictions on the density of the engaging elements and the accuracy of the shape of the engaging elements, making it difficult to increase the strength of engagement. In addition, the method of manufacturing molded surface fasteners using the injection molding method has some drawbacks in terms of mold accuracy and mold release.
There are restrictions on the shape, density, etc. of the engagement elements, and it is difficult to increase the engagement force. Furthermore, the injection molding method described above cannot produce a large or small hook-and-loop fastener, and it has not been possible to provide a hook-and-loop fastener with an optimal size depending on the application.

[0004] Accordingly, an object of the present invention is to provide a molded surface fastener with high engagement strength and increased density of engagement elements. A further object of the present invention is to provide a molded surface fastener that can easily be molded into a molded surface fastener of an optimal size depending on the intended use.

[0005]

[Means for Solving the Problems] That is, the present invention arranges at least one row of unit engaging elements each consisting of a large number of engaging elements in multiple stages on the surface of a base material, and also provides space between adjacent rows of unit engaging elements. A first molded hook and loop fastener provided with a substantially flat area, at least one row of unit engagement elements each consisting of a large number of engagement elements arranged in multiple stages on the surface of a base material, and adjacent unit engagement elements a second molded surface fastener having an opening formed in the base material between the rows through which the engaging element provided on the first molded surface fastener is inserted; The engagement element provided on the first molded hook-and-loop fastener is inserted through the opening formed in the molded hook-and-loop fastener, so that the base material of the second molded hook-and-loop fastener is attached to at least a portion of the substantially flat area of the first molded hook-and-loop fastener. This is a molded hook-and-loop fastener that is fixed.

[0006]

[Function] The present invention provides an engaging element of a first molded surface fastener in which a substantially flat area is provided between the unit engaging element rows, and an opening is provided in the base material between the unit engaging element rows. A second molded hook and loop fastener is inserted through the aperture of the second molded hook and loop fastener to form a second
By fixing the base material of the molded hook-and-loop fastener, a hook-and-loop fastener with a dense row of engaging elements or a hook-and-loop fastener of any size can be easily obtained.

[0007]

[Embodiment] An embodiment of the molded surface fastener of the present invention will be explained below with reference to the drawings. FIG. 1 is a sectional view of a molded surface fastener 1 of the present invention in which engaging element rows 2 are arranged in multiple stages on the surface of a base material 3, and L is the interval between the engaging element rows. 2 and 3 are cross-sectional views illustrating the method for manufacturing a molded surface fastener of the present invention, and FIG. 2 is an example of a molded surface fastener in which the interval between engagement element rows is L, and A unit engaging element row 5 (one row in FIG. 1) of a hook-and-loop fastener 4 has a unit engaging element row 5 (one row in FIG. 1) in which a first molded hook-and-loop fastener 7 is inserted into an opening 6 formed at an interval of 2L, usually centered at the position L. The two molded surface fasteners 4 and 7 are combined and integrated by inserting the engaging elements forming a mating element row 8 (one row in FIG. 1). Figure 3 shows 3
This is an example of a molded surface fastener consisting of a combination of molded surface fasteners 9, 10, and 11. Engagement elements forming a unit engagement element row (one row in FIG. 3) provided in the first (B) molded surface fastener 10 are inserted into the holes, and the first (A) molded surface fastener 9 is inserted into the hole. The first molded surface fastener 4 is formed by fitting and fixing the base material into the recesses provided between the rows of unit engaging elements of the first molded surface fastener 10 (B). 1st (A) above
The unit engagement of the second molded surface fastener 11 is inserted into the opening provided between the two rows of unit engagement element rows of the first molded surface fastener 4 consisting of the molded surface fastener and the first (B) molded surface fastener. The base material of the first molded hook-and-loop fastener 4 is inserted between the unit engagement element rows of the second molded hook-and-loop fastener 11 by inserting the engaging elements forming a mating element row (one row in FIG. 3). The two molded surface fasteners are integrated by fitting into the recess.

FIG. 4 is a plan view of the second molded surface fastener constituting the molded surface fastener of the present invention, and shows 13 rows (one row in FIG. 4) of unit engagement elements of the second molded surface fastener 12. An opening 14 through which the engaging element of the first molded surface fastener is inserted is provided centered at the middle part of the interval 2L.

FIG. 5 is a perspective view illustrating another embodiment of the molded surface fastener of the present invention. The unit engagement element rows of the first molded surface fastener 17 having an elongated recess between the unit engagement element rows (two rows in FIG. 5) are inserted into the elongated openings to form the second molded surface fastener. This is a molded surface fastener in which the base material of the first molded surface fastener is fitted into a recessed portion of the first molded surface fastener. In the present invention, the second
Although the openings formed between the unit engagement element rows of the molded surface fastener are for inserting one engagement element as shown in FIGS. It may be an elongated opening. Alternatively, it may be an opening through which a unit engagement element row shown in FIG. 5 is inserted. Further, the unit engagement element row may be one row or multiple rows. Moreover, the shapes of the engaging elements provided on the first molded surface fastener and the second molded surface fastener may be the same shape or may be different shapes.

The molded hook-and-loop fastener of the present invention can be made of, for example, polyolefins such as polypropylene and polyethylene, polyesters such as polyethylene terephthalate and polybutylene terephthalate, 6-nylon, 66-nylon, 610-nylon, 11-nylon, 12-nylon, etc. selected from thermoplastic resins such as polyamide, vinyl chloride resin, acrylic resin, polycarbonate, polystyrene, polyester elastomer, polyamide elastomer, polyurethane elastomer, thermosetting resin such as epoxy resin, melamine resin, urethane resin, or rubber. The first molded hook-and-loop fastener and the second molded hook-and-loop fastener are molded using a cast molding method such as melt extrusion molding or injection molding using a resin composition to which fillers, colorants, and various stabilizers are added as necessary. Molding Molding hook-and-loop fasteners. Further, the first and second molded surface fasteners may be made of the same material or may be made of different materials. The molded surface fastener may be subjected to surface treatment such as primer corona treatment, or heat treatment to the material.

[0011] The second molded hook-and-loop fastener has unit engaging element rows corresponding to intervals of 1 to 5 integral multiples of the interval L between the unit engaging element rows of a product molded hook-and-loop fastener in which a large number of engaging elements are normally provided. are thinned out, and openings are provided in portions corresponding to the thinned out unit engagement element rows. Similarly, a first molded surface fastener having engaging elements inserted into openings provided between rows of unit engaging elements of the second molded surface fastener is made in the same manner as the second molded surface fastener, and the first molded surface fastener is The engagement element of the first molded hook-and-loop fastener is inserted through the aperture of the second molded hook-and-loop fastener to engage the substantially flat area of the base of the first molded hook-and-loop fastener on the base material of the second molded hook-and-loop fastener. are laminated and at least a portion thereof is fixed using a fixing means such as adhesive, laser, high frequency, or ultrasonic waves. The substantially flat region of the first molded surface fastener may be flat enough to allow the base material of the second molded surface fastener to be laminated and integrated;
It may have a recessed portion as shown in FIG. Further, when two molded surface fasteners are fixed together by ultrasonic waves, the flat region may be in line contact or point contact with the base material of the second molded surface fastener.

As shown in FIG. 5, when a recess into which the base material of the second molded surface fastener is fitted is provided between the rows of unit engaging elements of the first molded surface fastener, the first molded surface fastener and This is preferable because positioning of the second molded surface fastener is easy.

[0013]

Effects of the Invention The molded surface fastener of the present invention has a molded surface fastener with closely spaced engagement element rows, which makes it possible to obtain a molded surface fastener with high engagement and strength, and which can be of any size. A molded hook-and-loop fastener with a shape corresponding to the shape can be easily obtained. The molded surface fastener of the present invention is suitable for a molded surface fastener having an engaging element of a bulging head type, such as a mushroom shape, which has an undercut mold structure.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a molded surface fastener of the present invention.

FIG. 2 is a sectional view of a molded surface fastener illustrating a combination of a first molded surface fastener and a second molded surface fastener.

FIG. 3 is a sectional view of a molded surface fastener illustrating a combination of a second molded surface fastener and a first molded surface fastener, which are two molded surface fasteners.

FIG. 4 is a plan view of the second molded surface fastener.

FIG. 5 is a perspective view of a molded surface fastener in which a first molded surface fastener and a second molded surface fastener each having a plurality of engagement element rows are combined.

[Explanation of symbols]

1 Molded surface fastener, 2 Engagement element row, 3 Base material, 4 Second molded surface fastener, 5 Unit engagement element row, 6 Opening, 7 First molded surface fastener,
8 unit engagement element row, 9 first (A) molded surface fastener, 10 first (B) molded surface fastener, 11
Second molded surface fastener, 12 Second molded surface fastener, 13 Engagement element, 14 Opening, 17
First molded surface fastener, 18 Second molded surface fastener, L engagement element row spacing.

Claims (1)

[Claims] Claim 1: At least one unit engagement element row consisting of a large number of engagement elements is arranged in multiple stages on the surface of a base material, and a substantially flat area is provided between adjacent unit engagement element rows. A first molded hook-and-loop fastener, and at least one row of unit engaging elements consisting of a large number of engaging elements are arranged in multiple stages on the surface of a base material, and the base material between adjacent rows of unit engaging elements is arranged in multiple stages. a second molded surface fastener having an opening through which the engaging element provided in the first molded surface fastener is inserted; A molded surface characterized in that the base material of the second molded surface fastener is fixed to at least a portion of the substantially flat area of the first molded surface fastener by passing through an engagement element provided on the fastener. fastener.