JPH0634503U - Molded surface fastener - Google Patents

Abstract

(57) [Summary] [Structure] A molded surface fastener in which a large number of engaging elements each having a columnar section and a bulge head mounted on the tip of the columnar section are erected on at least one surface of the substrate section. A molding surface characterized by providing at least one kind of row selected from a row of protrusions, a row of grooves and a row of staggered rows on at least one surface selected from the surface, the surface of the columnar portion of the engaging element and the surface of the bulging portion. fastener. [Effect] The present invention suppresses the plastic feeling (glare and gloss) found in conventional molded surface fasteners, and the molded surface fasteners are matte and soft, and have a good appearance and a good-looking appearance that is easy on the eyes. It has the effect of giving a surface feel.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a molded surface fastener, and more particularly to a molded surface fastener having a soft and high-grade appearance feeling with a suppressed plastic feeling (glistening) on the surface.

[0002]

[Prior art]

 Conventionally, a molded surface fastener has a hook-shaped, umbrella-shaped, or blunt-shaped end portion of an engaging element, and has a mechanism for engaging with a loop-shaped engaging element or a mechanism for engaging with each other. Proposals have been made in which compound element rows are arranged (for example, Japanese Patent Publication No. Sho 48-22768, Japanese Patent Publication No. 53-22889, and Japanese Patent Laid-Open No. 2-5947).

[0003]

[Problems to be solved by the device]

 Conventional molded surface fasteners are molded by extrusion molding or injection molding by melting a flexible thermoplastic polymer, but they have a smoother surface and a more plastic feel than woven surface fasteners. The object of the present invention is to improve the gloss of the surface by providing a large number of minute projection rows, groove rows and / or step rows on the surface of the base material of the molded surface fastener or the bulge or column of the engaging element. The goal is to provide molded surface fasteners that have a soft, high-class appearance with a soft plastic appearance and a good appearance.

[0004]

[Means for Solving the Problems]

 The above-mentioned object is a molded surface fastener in which a large number of engaging elements each having a columnar portion and a bulge head mounted on the tip of the columnar portion are erected on at least one surface of the base material portion. This is achieved by providing at least one kind of row selected from a row of protrusions, a row of grooves, and a row of steps on at least one surface selected from the surface of the columnar portion of the element and the surface of the bulging portion of the engaging element.

The molded surface fastener of the present invention is typically obtained by the following method. A flexible thermoplastic polymer having a melting temperature of 110 to 320 ° C., for example, at least one kind of flexible selected from the group consisting of olefin polymers such as polyethylene and propylene, polyvinyl chloride, polyester, polyamide and polyurethane. Of thermoplastic thermoplastic polymer by melt molding. Next, a molded body having a plurality of rows of strips in which a columnar portion having a bulging head is erected on the base material portion is formed, and then cuts are made in the strip portion of the molded body at predetermined intervals in the width direction of the strip portion. After that, the molded body is heated and stretched in the lengthwise direction to widen the gap between the cut portions of the strip portion, and a plurality of independent columnar bodies and bulging heads mounted on the columnar bodies are formed. Make the fastener material you have. At this time, in order to obtain a molded surface fastener having a row of protrusions, a row of grooves, and / or a stepped row, which is the object of the present invention, at least a part of the periphery of the extrusion hole of the extrusion die or the cooling sizing die surface. It is necessary to form by forming minute grooves, protrusions and / or steps on the. Further, a method of injection molding or extrusion molding using a mold surface having protrusions, grooves and / or steps is also included. The raw material for molding is molded and processed as a composition containing an inorganic filler such as silica, mica, or talc, an organic filler, a colorant, various stabilizers, etc., or a blend with other resins. Of course, you can do it.

This molded surface fastener is such that at least one surface selected from the surface of the fastener base material and the surface of the engaging element consisting of the columnar portion and the bulge head which are erected on the base material surface has minute projection rows and grooves. Since it has the rows and / or the different rows, it has a uniform and soft high-grade appearance without a plastic feeling, and has a tack-free (non-greasy), smooth surface feel. The provision of the surface pattern in the form of minute streaks or rows composed of minute rows of protrusions, rows of grooves, and / or rows of irregular steps has a remarkable effect particularly on the surface of the substrate. Such a molded surface fastener has a soft appearance and a soft touch, and gives a high-class feeling, and thus has a feeling of harmony with people, and can be used for underwear and other clothing and personal items.

The molded surface fastener of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view schematically showing an embodiment of the molded surface fastener of the present invention, in which 1 is a base material portion of the molded surface fastener, 2 is an engaging element provided upright on the base material portion 3, Is a columnar portion thereof, 4 is a bulging portion provided at the tip of the columnar portion 3, and 5 and 6 are surface patterns of minute streaks or rows formed on the surface of the base material portion and the surface of the coupling element, respectively. (Rows of protrusions, rows of grooves, and / or rows of different steps). FIG. 2 is a partially enlarged view showing a state of the surface of the fastener of the present invention when minute projection rows are formed on the surface of the engaging element 2 and the surface of the base member 1. B is the surface of the base material, b (and the back of b) and c (and the back of c) are the surface of the columnar part of the engaging element, d (and the back of d) and e are the surfaces of the bulge of the engaging element. is there.

In the present invention, it is necessary to form the streaky or row-like surface pattern on at least one surface selected from these surfaces. For the purpose of achieving the object of the present invention, the preferred surface selected as the at least one surface is the surface of the base material or the surface of the bulging surface, but the selection of a is preferable. When the molded surface fastener is visually inspected, of the fastener surfaces (a to e) shown in Fig. 2, the ratio of the area that can be seen is a large amount because it has a large amount of a and h, and the appearance feel of the molded surface fastener is strongly affected. is there. As a more preferable embodiment, when a plurality of surfaces are selected, it is preferable to select at least a and e, and if desired, other surfaces may be added to the selection in addition to a and e. FIG. 3 is an enlarged cross-sectional view of a row of minute projections, a row of grooves, and a row of different steps. FIG. 3 (1) is a cross-sectional view of an example of the projection portion, and FIG. 3 (2) is a cross-sectional view of an example of the groove portion. ) Shows an example cross-sectional view of the staggered row, and also shows the width (B), arrangement interval (P), and height or depth (H) of each row. In addition, the projection row, the groove row, or the step row formed on the surface of the base material portion and / or the surface of the engaging element is formed on the same fastener by any one of the projection row, the groove row, or the step row. It is needless to say that these may be formed in a mixed state.

The width B of the protrusion row, the groove row, or the step row in the present invention shown in the above figure is preferably 200 μm or less, and when it exceeds 200 μm, the striving feeling is strong and the soft feeling is lost, which is not preferable. Further, the height or depth H of the row of protrusions or the rows of grooves is preferably 100 μm or less, and when it exceeds 100 μm, the change in the thickness of the base material becomes large, and the base material is easily torn or hardened, which is not preferable. . Furthermore, it is preferable that the interval between the projection row, the groove row and / or the step difference row is 1.5 mm or less, and if the distance is wider than this, it is not a soft and high-grade fastener from the viewpoint of appearance and touch. Not preferable.

[0010]

【Example】

 Next, the embodiments of the present invention will be described with reference to specific examples. Example 1 A polyolefin-based elastomer was melt-extruded at a temperature of 240 ° C. by using an extrusion molding apparatus in which a large number of minute grooves were formed in a part of the periphery of a die, and the polyolefin elastomer was melted at a temperature of about 1 at a right angle to a flat substrate surface. A molded body was formed in which 10 rows of strips each having a columnar portion protruding to a height of 0.5 mm and a bulge were formed. On the surface of each strip of this molded body, a large number of rows of protrusions extending in the lengthwise direction were formed. The strips of this molded body were cut at appropriate intervals in the width direction thereof, and then stretched three times, and finally arranged in 10 rows at a pitch of about 2 mm on a substrate surface having a width of 25 mm. A molded surface fastener material having a composite element group was obtained. A protrusion row as shown in FIG. 1 was formed on the base material surface of the molding surface fastener and the bulging head surface of the engaging element, and the protrusion row had a width of 40 μm, a height of 15 μm, and an interval of 0.25 mm. . The surface of this molded surface fastener has less glare and luster, has a uniform soft feel, and has a high-class appearance that is less plastic and has a human-friendly appearance. Furthermore, this was a molded surface fastener that had a soft hand feel and a less sticky feel, and had no problems in terms of engagement.

[0011]

[Effect of device]

 The present invention suppresses the plastic feeling (glare and gloss) found in conventional molded surface fasteners, and the molded surface fasteners are matte and soft, and have a visually appealing, high-class appearance and a good surface finish. Has the effect of exhibiting a touch.

[Brief description of drawings]

FIG. 1 is a perspective view schematically showing an example of a molded surface fastener of the present invention.

FIG. 2 is a partially enlarged view showing the surface state of the engaging surface of the molded surface fastener of the present invention and the surface state of the minute projection row formed on the surface of the base material portion.

FIG. 3 (1) is an enlarged cross-sectional view of a fine convex protrusion,
(2) is an enlarged sectional view of a fine concave groove, and (3) is an enlarged sectional view of a fine staggered row.

[Explanation of symbols]

1 Base Material of Molded Surface Fastener 2 Engagement Element 3 Columnar Part of Engagement Element 4 Expansion Head of Engagement Element 5 Projection Row, Groove Row and / or Stepped Row 6 Formed on Base Material Surface 6 Engagement Element Rows of protrusions, grooves and / or staggered rows formed on the surface of the bulging head of a. Base material surface b and c

Claims (1)

[Scope of utility model registration request] 1. A molded surface fastener in which a large number of engaging elements each having a columnar portion and a bulge head mounted on the tip of the columnar portion are erected on at least one surface of the base material portion. Molding characterized by providing at least one kind of row selected from a row of protrusions, a row of grooves and a row of staggered rows on at least one surface selected from the surface of the columnar portion of the coupling element and the surface of the bulging portion of the engagement element. Hook-and-loop fastener.