WO2022102546A1

WO2022102546A1 - Male molded hook-and-loop fastener

Info

Publication number: WO2022102546A1
Application number: PCT/JP2021/040848
Authority: WO
Inventors: 一則高▲くわ▼; 悟小野; 佳克藤澤; 圭司竹原
Original assignee: クラレファスニング株式会社
Priority date: 2020-11-10
Filing date: 2021-11-05
Publication date: 2022-05-19
Also published as: JPWO2022102546A1

Abstract

Provided is a male molded hook-and-loop fastener including a resin sheet-like substrate, an engaging element region in which a plurality of male engaging elements made from the same resin and rising from the surface of the substrate are present, and, on either side of the engaging element region, wall regions in which walls that are made from the same resin, rise from the surface of the substrate, and extend parallel to the engaging element region are present at fixed intervals in a plurality of parallel rows, wherein conditions (1) to (3) described in the specification are satisfied. With this male molded hook-and-loop fastener, when the male molded hook-and-loop fastener is being bonded to the rear surface of an automotive interior decorating material using an adhesive, there are almost no problems of the adhesive liquid protruding from the edge portions of the male molded hook-and-loop fastener, the protruded adhesive liquid covering the engaging element surface of the male molded hook-and-loop fastener, or the adhesive hardening as high lumps, thereby causing a deterioration in the engagement capability of the engaging elements.

Description

Male molded surface fastener

The present invention relates to a male molded surface fastener suitable for attaching an automobile interior material to a vehicle body. Specifically, when attaching the male molded surface fastener to the back surface of the interior material for automobiles with an adhesive, the adhesive used protrudes from the end of the male molded surface fastener, and the protruding adhesive is the male molded surface fastener. Male-molded hook-and-loop fasteners and male-molded hook-and-loop fasteners that invade the engaging element surface on the surface side of the The present invention relates to an automobile interior material to which is attached by an adhesive, and a vehicle body to which the interior material is fixed.

Conventionally, as one of the means for attaching an object to the surface of an object, a male hook-and-loop fastener having a male engaging element substituted by a hook type is fixed to the surface of either the object or the object. The surface of the object, by fixing a female hook-and-loop fastener with a loop-type hook-and-loop element to the other surface, and overlapping the engaging element surfaces of both hook-and-loop fasteners to engage both engaging elements. A method of attaching an object to an object is used.

Also in the field of automobiles, a combination of male and female hook-and-loop fasteners is used as a means for attaching and fixing interior materials for ceilings and flooring to the main body of the vehicle body. Specifically, a male hook-and-loop fastener is attached to the back surface of the interior material such as ceiling material and floor material, and a female hook-and-loop fastener is attached to the vehicle body side, and the interior material is attached to the vehicle body by engaging both surface fasteners. The fixing method is widely used.

As one of the male type surface fasteners constituting this combination of surface fasteners, a male type surface fastener in which a hook-shaped monofilament is fixed on the surface of a base cloth made of a woven fabric is known. Male woven hook-and-loop fasteners have the advantage that the engaging force does not decrease even after repeated engagement / peeling, but on the other hand, the engagement force itself is low and high engagement force is required for automobile interiors. Not suitable as a male hook-and-loop fastener for fixing materials. Therefore, a male molded surface fastener that can obtain a high engaging force is preferable for fixing an interior material for an automobile.

For this reason, a method of using a male molded surface fastener as a means for fixing an automobile interior material to a vehicle body has been proposed. For example, Patent Document 1 describes that a male molded surface fastener is attached to the back surface of an automobile ceiling material with an adhesive. However, when the adhesive is attached using an adhesive, the adhesive has a problem that the adhesive strength decreases as the temperature of the vehicle body rises. Especially in the case of automobiles, the temperature of the car body becomes high due to the strong summer sun, which greatly reduces the adhesive strength, and in some cases, it may cause major problems such as peeling of the ceiling material. Have.

Instead of the method of using such an adhesive, Patent Document 2 describes a male molded surface fastener in which a hot melt adhesive is applied to a predetermined position on the back surface of a mold in advance, and the element surface is on the mold surface side. Then, insert the sheet for interior materials for automobiles into the mold, heat and pressurize it to form it into a predetermined shape, cool it, and then remove it from the mold to place the male mold surface fastener in the predetermined position. It describes how to make a fixed automotive interior material.
By using this method of attaching with a hot melt adhesive, an automobile interior material in which a male molded surface fastener is fixed at a predetermined position on the back surface can be obtained at once. On the other hand, since it is necessary to match the heat molding temperature with the hot melt temperature of the hot melt adhesive, the molding conditions are limited, and there is a problem that it can be carried out only in a factory for molding interior materials for automobiles.

If a solvent-based, emulsion-based, or curable adhesive is used instead of such an adhesive or a hot-melt adhesive, the above-mentioned problem of deterioration of adhesive strength at high temperature, molding conditions, and implementation location can be used. The problem of limitation is solved.

The present inventors have conducted research on a technique for attaching a male molded surface fastener to the back surface of an automobile interior material with an adhesive as described above, and found that the back surface of the automobile interior material is covered with a non-woven fabric, foamed resin, or the like. Therefore, when the amount of the adhesive liquid used is small, the adhesive liquid is absorbed in the non-woven fabric or the foamed resin and does not stay on the essential adhesive surface, so that sufficient adhesive strength cannot be obtained. Was found to occur. In order to firmly attach the hook-and-loop fastener to the back surface of such an interior material with an adhesive, it is necessary to use a large amount of adhesive liquid. However, the adhesive liquid used squeezed out from the end of the hook-and-loop fastener at the time of bonding, and the squeezed adhesive liquid invaded the surface side of the surface fastener and covered the surface of the engaging element or swelled on the surface of the engaging element. It has been found that a new problem arises in which the engaging element is hindered from engaging with the engaging element and the engaging ability is lowered due to the presence of a large lump.

The male molded surface fastener described in Patent Document 3 is known as a male molded surface fastener that prevents the adhesive liquid from flowing into the engaging element surface. The male-molded surface fastener described in Patent Document 3 is a male-molded surface fastener used for fixing a skin material covering the surface of a foam-molded body such as a seat cushion to the surface of a seat-shaped foam-molded body. It is a hook-and-loop fastener. Specifically, the male mold surface fastener is set in advance in the mold for foam molding the foam molded body, and in this state, the foamed resin liquid is injected into the mold to form the male mold surface fastener on the surface. It is a male-molded surface fastener used for so-called mold-in molding, which manufactures a foam-molded body to which is fixed.

Patent Document 3 describes a male molded surface fastener provided with resin intrusion prevention walls at both ends of the engaging element region. As described in paragraph 0045 of Patent Document 3, in order to prevent the foamed resin liquid from invading the engaging element region and losing the engaging ability of the engaging element during mold-in molding, engagement is performed. Resin intrusion prevention walls having the same height as the engaging element or higher than the engaging element are provided at both ends of the element region to eliminate the gap between the wall and the mold during molding. It prevents the foamed resin liquid from entering the engaging element region through the gap. Further, Patent Document 3 also describes that a cut is made in the wall so that the wall can be easily curved along the shape of the mold and can be brought into close contact with the mold. This cut has a so-called wedge shape and a narrow gap, which becomes narrower toward the base.

The present inventors conducted a test of attaching the male-shaped molded surface fastener described in Patent Document 3 to the back surface of an automobile interior material with an adhesive, and found that the adhesive liquid protruding from the back surface was found. Overcoming the resin intrusion prevention wall of the male molded surface fastener, reaching the engaging element area and covering the engaging element surface, and further solidifying in the form of a lump of adhesive that rises high at the point where the wall is overcome, the engaging force is increased. It turned out to reduce. After all, when the male molded surface fastener is attached to the back surface of the interior material for automobiles with an adhesive, a technique for preventing the adhesive liquid that has squeezed out from entering the engaging element region is described in Patent Document 3. It was found that the male-molded hook-and-loop fastener cannot be used.

Japanese Unexamined Patent Publication No. 11-179813 Japanese Unexamined Patent Publication No. 2017-1555 Japanese Unexamined Patent Publication No. 2010-162339

The present invention has the above-mentioned problem, that is, when the male molded surface fastener is attached to the back surface of the interior material for automobiles with an adhesive, the adhesive liquid used protrudes from the end portion of the male molded surface fastener and protrudes. The adhesive liquid invades the engaging element surface on the surface side of the male molded surface fastener and covers the engaging element surface, or the adhesive rises and hardens in a lump, and as a result, the engaging ability of the engaging element decreases. It is an object of the present invention to provide a male-molded hook-and-loop fastener that hardly causes a problem of causing the male-shaped molded surface fastener and an interior material for an automobile in which such a male-shaped molded surface fastener is fixed to the back surface by an adhesive.

That is, the present invention
Resin sheet-like substrate,
An engaging element region in which a plurality of male engaging elements made of the same resin rising from the surface of the sheet-shaped substrate exists, and rising from the surface of the sheet-shaped substrate and extending in parallel along the engaging element region. In the male molded surface fastener in which wall regions made of the same resin exist in parallel in a plurality of rows at regular intervals on both sides of the engaging element region, the following conditions (1) to (3). ) Is a male-molded hook-and-loop fastener.
(1) In each wall, a plurality of cuts penetrating the wall in the thickness direction and extending from the lower part to the top of the wall are arranged at equal intervals (error is 5% or less), and the cuts are used. The wall is divided into a plurality of wall divisions (A), and the walls form a row of wall divisions (A).
(2) The height of the wall dividing body (A) is 0.25 to 0.7 times the height of the male engaging element.
(3) The part corresponding to the position where the cut portion of one wall exists is the wall surface of the wall dividing body (A) in the adjacent wall.

In a preferred embodiment of the present invention, the length of each cut portion (4) existing at both ends of the wall split body (A) in the wall length direction is the wall split body (A) sandwiched between the cut portions. It is 0.3 to 0.7 times the length in the wall length direction.

In another preferred embodiment of the present invention, in each wall region, five or more rows of walls are present in parallel along the engaging element region.

In another preferred embodiment of the present invention, the length of the cut portion in the wall length direction is the same length from the base to the top (with an error of 5% or less) and is orthogonal to the wall surface of the cut portion. The shape of the cut portion seen from the direction is a quadrilateral.

In another preferred embodiment of the present invention, the length of the wall dividing body (A) in the wall length direction is 2 to 6 times the height of the wall dividing body (A).

In another preferred embodiment of the present invention, the thickness of the wall dividing body (A) is 0.1 to 0.3 mm, and the height of the wall dividing body (A) is 0.3 to 0.8 mm. ..

In another preferred embodiment of the present invention, the engaging element region has a plurality of rows of engaging element rows in which a plurality of male engaging elements are arranged in a row parallel to the wall region, and the engagement elements are adjacent to each other. There is a wall divider (B) between the element trains. In order to distinguish it from the wall dividing body (A) existing in the wall region, the wall dividing body existing in the engaging element region is referred to as a wall dividing body (B).

In another preferred embodiment of the present invention, a plurality of engaging element rows (B) in which a plurality of male engaging elements are arranged in a row in a direction perpendicular to the engaging element row direction are present in parallel. One row of the five rows of engaging element rows (B) is a row in which the wall splitting body (B) exists between two adjacent male engaging elements in the row, and the other 1 to 1 to The four rows are rows in which the wall dividing body (B) does not exist between two adjacent male engaging elements in the row, and the plurality of wall dividing bodies (B) are the engaging element rows. They are lined up in a row in the direction.

In another preferred embodiment of the present invention, a protrusion rising from the back surface of the substrate and having a height of 0.5 to 5 times the thickness of the substrate is present on the back surface side of the substrate.

In another preferred embodiment of the present invention, the resin constituting the male molded surface fastener is a semi-aromatic polyamide.

In another preferred embodiment of the invention, the semi-aromatic polyamide is a semi-aromatic polyamide obtained from a diamine component containing 1,9-nonanediamine and 2-methyl-1,8-octanediamine and a dicarboxylic acid component containing terephthalic acid. Is.

The present invention further provides an automobile interior material in which the back surface of the male molded surface fastener is attached to the back surface of the automobile interior material with an adhesive.

In another preferred embodiment of the present invention, the adhesive is an ethyl cyanoacrylate-based instant adhesive.

The present invention further relates to an automobile for an automobile in which a male engaging element of the male molded surface fastener attached to the back surface of an automobile interior material and a loop-shaped engaging element of a loop surface fastener attached to a vehicle body are engaged. Provides a car body with fixed interior materials.

As described above, the male molded surface fastener of the present invention includes an engaging element region in which a plurality of resin male engaging elements are present and two wall regions existing so as to sandwich the engaging element region. .. In each wall region, a plurality of rows of walls made of the same resin extending in parallel along the engaging element region exist at regular intervals. The height of each wall is lower than the height of the male engaging element, and each wall is divided into a plurality of wall divisions (A) by a cut portion to form a row of wall divisions (A). The cut portion of one wall and the cut portion of the adjacent wall are formed so as to be displaced in the length direction.

By having such a wall area, when the male molded surface fastener is attached to the back surface of the automobile interior material with an adhesive, the used adhesive liquid is superimposed on the automobile interior material and the male mold. Even if it squeezes out from the widthwise end of the molded surface fastener, the squeezed out adhesive liquid flows along the outermost wall dividing body (A) in the widthwise direction of the wall region. A part of the flow penetrates into the inside of the wall from the cuts existing at both ends of the wall dividing body (A), and enters the wall surface of the wall dividing body (A) in the inner row existing in front of the intrusion direction. collide. Therefore, the momentum of the flow is slowed down and the flow is divided into both sides and flows along the wall dividing body (A). A part of the divided flow penetrates into the gap between the cut portion at the end of the same wall division (A) and the wall of the inner row, and the wall division of the inner row existing in front of the intrusion direction. It collides with the wall surface of the body (A), further loses momentum, and flows along the wall dividing body (A).

While repeating such a flow, the adhesive liquid is forced to diffuse widely toward the wall along the wall, and as a result, the adhesive liquid hardly reaches the engaging element region. Therefore, the adhesive liquid penetrates to the engaging element on the surface side of the male molded hook-and-loop fastener and covers the engaging element, or the invading adhesive liquid solidifies in a lumpy and raised state, and as a result, the engaging element is engaged. There is almost no problem of hindering the mating and reducing the engaging ability.

In the male molded surface fastener of the present invention, as described above, the height of the wall dividing body (A) is 0.25 to 0.7 times the height of the male engaging element, that is, the wall dividing body (A). ) Is considerably lower than the height of the male engaging element. Even if the adhesive liquid gets over the outermost wall partition (A), it spreads along the wall in the wall length direction, so that the hardened adhesive mass is low, and therefore the hardened adhesive is male. It hardly interferes with the engagement of the engaging element. Further, even if a part of the adhesive liquid is solidified in a state of being lumped on the wall dividing body (A), the height of the wall dividing body (A) is considerably lower than the height of the male engaging element. , The solidified material raised on the wall splitting body hardly interferes with the engagement of the male engaging element.

It is a perspective view schematically showing an example of the arrangement of the engagement element region and the wall region of the male molded surface fastener of this invention. It is an example of a male molded surface fastener of the present invention, and is a perspective view schematically showing an enlarged portion surrounded by a dotted line shown in FIG. 1. 2 is a side view of the male molded surface fastener shown in FIG. 2 as viewed from the X direction shown in FIG. 2. 2 is a side view of the male molded surface fastener shown in FIG. 2 as viewed from the Y direction shown in FIG. 2. It is another example of the male type molded surface fastener of this invention, and is the side view seen from the same direction as FIG. It is a schematic diagram when the engaging element region is seen from the top of another example of the male molded surface fastener of this invention.

Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 is a diagram schematically showing an arrangement relationship between an engaging element region (1) and a wall region (2) of the male molded surface fastener of the present invention. The male engaging element (1f) existing in the engaging element region (1) and the wall dividing body (A) (2w) existing in the wall region (2) are omitted. As shown in FIG. 1, in the male molded surface fastener of the present invention, the engaging element region (1) and the two wall regions (2) exist side by side along the length direction thereof, and the engaging element is present. Wall regions (2) exist on both sides of the region (1).

FIG. 2 is a perspective view schematically showing an example of the portion surrounded by the dotted line shown in FIG. 1, that is, the vicinity of the boundary between the engaging element region (1) and the wall region (2) of the male molded surface fastener of the present invention. be. In this figure, the front is the wall region (2), and the other side of the wall region (2) is the engaging element region (1). As is clear from this figure, in the male molded surface fastener of the present invention, the rows of the plurality of wall dividing bodies (A) (2w) constituting the wall region (2) are arranged in the length direction of the wall (simply "length"). It is lined up in parallel in multiple rows along the "direction"). The engaging element region (1) exists inside the wall region (2) in the direction orthogonal to the length direction of the wall dividing body (A) (2w) (sometimes simply referred to as the “width direction”). ..

FIG. 3 is a side view seen from the X direction shown in FIG. 2, and FIG. 4 is a side view seen from the Y direction shown in FIG. In addition, in FIG. 3, in order to make it easy to understand the relationship between the wall dividing body (A) (2w) and the male engaging element (1f), the frontmost row of the wall dividing body (A) (2w) and the first hand Only the row of the previous male engaging element (1f) is described.

As shown in FIGS. 2 to 4, in the wall region (2), a plurality of rows of walls (wall divided body (A)) having a constant height made of the same resin rising vertically from the surface of the substrate (3) made of the resin. (2w) columns) exist in parallel with each other at regular intervals. Each wall is arranged on the surface of the substrate (3) in parallel with the engaging element region (1). In each wall, a plurality of cut portions (4) penetrating the wall in the thickness direction and extending from the lower part to the top of the wall are present at equal intervals (error is 5% or less). The wall is divided into a plurality of wall dividing bodies (A) (2w) by the cut portion (4), and the walls form a row of wall dividing bodies (A) (2w). It is preferable in terms of manufacturing and strength that the wall divided bodies (A) and (2w) have the same thickness (error is 5% or less) from the base to the top. Further, in order to diffuse the adhesive lower in the wall length direction than in the male engaging element, the cut portion (4) has a shape in which the length in the wall length direction is considerably longer than the height. ..

As shown in FIG. 2, the portion corresponding to the position where the cut portion (4) of one wall exists is the wall surface of the wall dividing body (A) (2w) in the adjacent wall. That is, the portion corresponding to the position where the cut portion (4) of one row exists is present in the direction perpendicular to the wall surface (width direction), and in the adjacent row, the wall surface of the wall dividing body (A) (2w). It has become. That is, the position in the wall length direction in which the cut portion (4) of one row exists and the position in the wall length direction in which the cut portion (4) in the adjacent row exists are different. As shown in FIG. 2, the portion corresponding to the position where the cut portion (4) of one row exists is the wall dividing body (A) (2w) in the adjacent row existing in the direction perpendicular to the wall surface. It is preferable that it is the central portion in the length direction of. In this case, as described above, the adhesive liquid that has penetrated into the inside of the wall splitting body (A) (2w) from the cut portion (4) exists in front of the wall splitting body (A) (2w) in the intrusion direction. ), The momentum of the flow is reduced and the flow flows between the walls along the wall dividing bodies (A) and (2w), so that the effect of the present invention can be most easily obtained.

Regarding the cut portion (4), in the present invention, it is described that "from the lower part of the wall to the upper part", but the "lower part of the wall" here means the root part of the wall, and the root part is the substrate. In the case of the surface or when there is a raised portion slightly above the surface of the substrate, it may be a raised portion. Further, the "row of the wall divided bodies (A) (2w)" referred to in the present invention is a straight line while keeping the distance from the adjacent wall constant without the wall divided bodies (A) (2w) shifting laterally. It means that they are lined up in a row. Further, FIGS. 3 and 4 show a protrusion (5) rising from the back surface of the substrate (3).

In the male molded surface fastener of the present invention, as shown in FIG. 2, a male engaging element (1f) and a wall split body (A) (2w) made of the same resin are placed on the surface of the resin substrate (3). ) Are lined up in a row. The thickness of the substrate (3) is preferably in the range of 0.1 to 0.3 mm in terms of ease of bending, strength of the male molded surface fastener, and the like.
Further, since the male molded surface fastener of the present invention is used for attaching to the back surface of the interior material with an adhesive, the back surface side of the substrate (3) has irregularities and ridges in consideration of the adhesive force with the back surface of the interior material. There may be protrusions, groove-shaped depressions, and the like. Particularly preferred are ridge-shaped protrusions and spot-shaped protrusions.

FIGS. 3 and 4 describe a case where a protrusion (5) is present on the back surface of the substrate (3). When such a protrusion (5) is present on the back surface of the substrate, in addition to enhancing the adhesive force between the back surface of the male molded hook-and-loop fastener and the back surface of the interior material, the excessively used adhesive liquid is applied to the back surface side of the substrate. It is preferable because it can be fastened to prevent a large amount of the adhesive liquid from flowing into the surface side of the substrate, and the flexibility of the substrate is not significantly impaired.

Such protrusions may be ridge-shaped ridges that are uniformly present on the back surface of the substrate parallel to the row of male engaging elements, or spot-shaped protrusions on the back surface of the substrate as shown in FIGS. 3 and 4. It may be independently and evenly scattered. The height of the protrusion (5) is preferably about 0.5 to 5 times the thickness of the substrate, more preferably about 0.5 to 4 times the thickness of the substrate, and further preferably about 0.5 to 3 times. be. In the case of ridge-shaped protrusions, the density is one per 0.3 to 1.5 cm in the width of the substrate, and in the case of scattered spots, the density is one per 0.1 to 1 cm ² on the back surface of the substrate. It is preferable that it exists in. In the case of spot-shaped protrusions, the protrusions rise from the back surface of the substrate and bend in one direction toward the tip, which gives the adhesive strength and the adhesive liquid retained on the back surface of the male molded hook-and-loop fastener. It is preferable because it can efficiently prevent the flow to the surface side.

As described above, the male molded surface fastener of the present invention has an engaging element region (1) and an engaging element region (1) in which a plurality of male engaging elements (1f) rising from the surface of the substrate (3) are present. It has two wall regions (2) that exist so as to sandwich 1) from both sides in the width direction. In the wall region (2), a plurality of rows of walls (rows of wall divided bodies (A) and (2w)) rising from the surface of the substrate (3) and extending in parallel along the engaging element region (1) are constant. They exist in parallel at intervals. The presence of such a wall region (2) highly prevents the adhesive liquid from flowing into the engaging element region (1).

Next, a wall region (2) in which a plurality of rows of the wall divided bodies (A) and (2w) exist in parallel will be described. Figure: As shown in 3, the height (h ₂ ) of the wall splitting body (A) (2w) is 0.25 to 0.7 times the height (h ₁ ) of the male engaging element (1f). It is necessary. That is, the height (h ₂ ) of the wall dividing body (A) (2w) is 0.25 to 0.7 times the height (h ₁ ) of the male engaging element (1f), so that the substrate surface side The adhesive liquid that has flowed into the wall splitting body (A) (2W) can be widely diffused along the wall dividing body (A) (2W). Further, even if a part of the adhesive liquid is not sufficiently diffused along the wall-divided body (A) (2w) and gets over the wall-divided body (A) (2w) to form a massive solidified product, it is also formed. Since the height of the agglomerated solidified material is not high enough to hinder the engagement of the male engaging element, the engagement of the male engaging element is hardly lowered.

When the height (h ₂ ) of the wall dividing body (A) is less than 0.25 times the height (h ₁ ) of the male engaging element (1), the effect of blocking the adhesive liquid is small. On the contrary, when it exceeds 0.7 times, the amount of the adhesive liquid overcoming the wall-divided body (A) (2w) is small, but the adhesive liquid overcoming a part of the wall-divided body is lumpy on the wall-divided body at the overcoming point. Form an adhesive solidified product. Since this massive solidified material interferes with the engagement of the male engaging element, the engaging force of the male engaging element is reduced. In addition, such raised lumps of adhesive make it look unattractive. The height (h ₂ ) of the wall dividing body (A) (2w) is preferably in the range of 0.3 to 0.6 times the height (h ₁ ) of the male engaging element (1f), more preferably 0. It is in the range of .35 to 0.55 times.

The height (h ₂ ) of the wall dividing body (A) (2w) is preferably in the range of 0.3 to 0.8 mm, more preferably in the range of 0.35 to 0.7 mm, and further preferably in the range of 0.4 to 0.4 mm. The range is 0.6 mm. As shown in FIGS. 3 and 4, the height (h ₂ ) of the wall dividing body (A) in the present invention is the height from the root to the top of the wall dividing body (A) (2w). Further, the height (h ₁ ) of the male engaging element means the height from the root portion to the highest portion of the male engaging element (1f), respectively.

In the male molded surface fastener of the present invention, as shown in FIG. 2, the portion corresponding to the position where the cut portion (4) of the wall of one row exists is the wall splitting body (the wall of the adjacent row). In the wall of the adjacent row where the wall surface of A), that is, the position corresponding to the position where the cut portion (4) exists, exists in the direction perpendicular to the wall surface, the wall division body (A) ( It is necessary that the wall surface is 2w). As described above, the position of the cut portion (4) is displaced in the wall length direction between the walls of the adjacent rows, so that the adhesive liquid spreads widely in the wall direction along the wall as described above. The adhesive is highly prevented from entering the combined element region (1).

Further, in the male molded surface fastener of the present invention, the length (L ₄ ) of each cut portion (4) existing at both ends of the wall split body (A) (2w) in the wall length direction is the same cut. It is preferably 0.3 to 0.7 times the length (L ₂ ) of the wall divided body (A) (2w) sandwiched between the portions (4) in the wall length direction, and more preferably. The range is 0.32 to 0.65 times, more preferably 0.35 to 0.6 times. Within the above range, the adhesive liquid can be guided between the walls and spread widely along the walls.

The length (L ₄ ) of the cut portion (4) in the wall length direction is the same length from the base to the top (error is 5% or less), and the cut portion (4) is orthogonal to the wall surface. It is preferable that the shape of the cut portion (4) seen from the direction (X direction in FIG. 2) is a quadrilateral. In FIGS. 2 and 3, the shape of the cut portion (4) is a parallelogram. In addition to the parallelogram, it may be a rectangle or a square. That is, it is preferable that the shape of the base is wide so that the adhesive liquid can be spread widely in the wall region, which is lower than the height of the male engaging element (1f). Of course, as long as the base of the cut portion (4) is wide, a trapezoidal shape may be used. The shape of the side piece of the cut portion (4), that is, the shape of the cut portion side of the wall dividing body (A) (2w) may be a straight line or a curved line.

Further, in the male molded surface fastener of the present invention, the length (L ₂ ) of the wall dividing body (A) (2w) in the wall length direction is the height (h ₂ ) of the wall dividing body (A) (2w). It is preferably 2 to 6 times, more preferably 2.5 to 5 times, and even more preferably 2.8 to 4.5 times. By having such a horizontally long shape, the adhesive liquid easily penetrates into the wall from the cut portion (4), and is formed in the gap between the walls along the wall dividing body (A) (2w). It becomes easy to spread widely.

The length (L ₂ ) of the wall divided bodies (A) and (2w) in the wall length direction is preferably in the range of 0.8 to 4 mm, more preferably in the range of 1 to 2.5 mm. In the present invention, the length (L _{4) of the cut portion (4) in the wall length direction and the length (L 2} ₎ of the wall divided body (A) (2w) in the wall length direction are both shown in FIG. As shown in, it means a length measured at a height of _one -third of the height (h1) of the male engaging element (1f).

In the male molded surface fastener of the present invention, the thickness of the wall dividing body (A) (2w), that is, in the direction orthogonal to the wall length direction of the wall dividing body (A) (2w) as shown in FIG. The width (w ₂ ) is preferably in the range of 0.1 to 0.3 mm because the wall-divided body (A) does not easily fall down due to the pressing of the adhesive liquid. More preferably, it is in the range of 0.15 to 0.25 mm.

In the male molded surface fastener of the present invention, the distance (b ₂ ) from the adjacent wall is 0.5 to 4 times the thickness (w ₂ ) of the wall divided bodies (A) and (2w), which is the adhesion. It is preferable because the agent solution can be widely spread between the walls, and a range of 1 to 3 times is particularly preferable. The wall-divided body (A) (2w) stands upright from the substrate (3) while maintaining a constant thickness without changing the thickness (w ₂ ) from the base to the tip of the substrate as described above. preferable.

In the male molded surface fastener of the present invention, it is preferable that five or more rows of walls exist in parallel along the length direction in each wall region (2) (five rows in FIG. 2). The presence of the plurality of rows of walls allows the adhesive liquid to spread widely over the wall region (2) and prevent the adhesive liquid from reaching the engaging element region (1). It is more preferably 6 to 15 rows, and even more preferably 8 to 12 rows.

In the male molded surface fastener of the present invention, the width of the wall region (2) in the direction orthogonal to the length direction is preferably in the range of 2 to 10 mm, more preferably in the range of 3 to 8 mm, and even more preferably 3. The range is 5 to 6 mm. Within the above range, it is possible to prevent the width of the engaging element region (1) from becoming relatively narrow, and it is possible to prevent a decrease in the engaging force. Further, the spread of the adhesive liquid to the wall region (2) is not hindered. The density of the wall divided bodies (A) (2w) in the wall region (2) is preferably 60 to 160 pieces / cm ² , and more preferably 80 to 140 pieces / cm ² . Further, it is preferably 0.7 to 1.5 times the density of the male engaging element in the engaging element region (1).

Next, the engaging element region (1) sandwiched between the wall regions (2) described above will be described.

The number of engaging element rows existing in the engaging element region (1) is preferably 15 to 40 rows from the viewpoint of obtaining a high engaging force, and the spacing (b ₁ ) between the engaging element rows is 0.2 to 1.0 mm. Is preferable in that it prevents the adhesive from reaching the engaging element.

As the male type engaging element (1f) forming the engaging element region (1), as shown in FIGS. It rises from the surface and does not branch from the root to the tip, but the thickness (width) in the wall length direction gradually becomes thinner as it gets closer to the tip, bends in the wall length direction from the middle, and the tip becomes a substrate. A hook-shaped engaging element that is bent so as to approach is preferable. In the male molded surface fastener, a male engaging element having a bulging head larger than the shaft such as a T-shaped, a sword-shaped, or a mushroom-shaped fastener at the top is generally used in the same manner as the hook-shaped male engaging element. ing. Compared to an engaging element having such a large bulging head, the hook-shaped engaging element is easier to manufacture, and the head of the engaging element is not broken or torn during engagement peeling. , It is preferable because an excellent engaging force can be obtained. The width (w ₁ ) of the hook-shaped engaging element shown in FIG. 4, that is, the width (w) of the male engaging element (1f) in the directions orthogonal to both the engaging element row direction and the height direction of the engaging element. It is preferable that ₁ ) is the same from the base portion to the tip portion in terms of engaging force and in terms of ease of manufacturing.

Such hook-shaped engaging elements are bent in a hook shape in a direction parallel to the length direction of the wall, and are lined up in a row in the direction in which the hook shape is bent. It is preferable that the hook-shaped engaging elements existing in the same row are bent in the same direction. Further, the hook-shaped engaging elements in all rows may be bent in the same direction. Alternatively, half of the rows of hook-like engaging elements may be bent in the opposite direction. In this case, the bending direction for each row may be opposite, or the bending direction for each of a plurality of rows may be opposite.

Since an excellent engaging force can be obtained, the height (h ₁ ) from the surface to the top of the substrate (3) of the male engaging element is preferably 0.6 to 1.5 mm, more preferably 0. The range is 8 to 1.3 mm. As described above, the height (h ₂ ) of the wall dividing body (A) (2w) needs to be 0.25 to 0.7 times the height (h ₁ ) of the male engaging element.

The width (w ₁ ) of the male engaging element (1f), that is, the width (w ₁ ) of the male engaging element (1f) in the directions orthogonal to both the engaging element row direction and the height direction of the engaging element. Is preferably in the range of 0.15 to 0.5 mm. The width (w ₁ ) of the male engaging element (1f) is 1.0 to 3.0 times the width (w ₂ ) of the wall splitting body (A), but the presence of the wall region is inconspicuous and high. It is preferable because an engaging force can be obtained.

The length of the base of the male engaging element (1f) in the engaging element row direction is preferably 0.7 to 1.5 mm, more preferably 0.8 to 1.3 mm. The length of the base of the male engaging element (1f) in the row direction of the engaging element is preferably 0.6 to 1.2 times the height of the male engaging element (h ₁ ), more preferably 0. It is in the range of .65 to 1.0 times. As for the thickness of the male engaging element (1f) in the wall length direction, as described above, the thick base and the thin tip are the points that the male engaging element is hard to fall down, and the point of the engaging force. Is preferable.

When the male engaging element (1f) is a hook-shaped engaging element, the male engaging element (1f) is gradually moved toward the engaging element row from the vicinity of 1/2 to 3/4 of the engaging element height (h ₁ ) from the base. It is preferable that it starts to bend. The density of the male engaging element in the engaging element region (1) is preferably in the range of 60 to 160 elements / cm ² , and particularly preferably 80 to 140 elements / cm ² .

The width of 5 to 50 mm in the direction orthogonal to the row direction of the wall dividing body (A) (2w) of the engaging element region (1) makes it easy to firmly fix the interior material for automobiles, which is more important in terms of handleability. It is preferable in terms of resultant force, more preferably 10 to 40 mm, still more preferably 15 to 35 mm.

Therefore, in the present invention, it is preferable that the wall regions (2) having a width of 2 to 10 mm exist on both sides of the engaging element region (1) having a width of 5 to 50 mm in the length direction, and the engaging elements having a width of 10 to 40 mm are engaged. It is more preferable that the wall region (2) having a width of 3 to 8 mm exists on both sides of the element region (1) in the length direction, and the width of the engaging element region (1) having a width of 15 to 35 mm is on both sides in the length direction. It is more preferable that a wall region (2) of 3.5 to 6 mm is present. In the male molded surface fastener of the present invention, the ratio of the area of the engaging element region (1) to the total area of the wall regions (2) existing on both sides is preferably in the range of 1.5: 1 to 4: 1. , More preferably in the range of 1.7: 1 to 3: 1.

As described above, by providing the wall regions on both sides of the engaging element region, it is possible to prevent the adhesive liquid from entering the engaging element region from both sides, but the lengthwise end of the engaging element region orthogonal to the wall regions. It is not possible to prevent the adhesive liquid from entering from the portion. In order to prevent the adhesive liquid from entering from the lengthwise end of the engaging element region, as shown in FIGS. 5 and 6, between the engaging element rows at the lengthwise end of the engaging element row. It is preferable that the same wall-divided body (B) (3w) as the wall-divided body (A) also exists. The presence of such a wall splitting body (B) can prevent the adhesive liquid from entering the engaging element region from the lengthwise end portion of the male molded surface fastener. The height, length, and width of the wall dividing body (B) are the same as those of the wall dividing body (A) of the wall region described above.

The wall dividing body (B) may exist parallel to the engaging element row over the entire length of the engaging element row, or may exist only at both ends in the length direction of the male molded surface fastener. You may. If the length of the male molded hook-and-loop fastener is predetermined, the wall splitting body (B) can be present only between the engagement element rows at both ends in the length direction, but otherwise. It is preferable that the wall splitting bodies (B) are interspersed between the engaging element rows over the entire length of the engaging element rows.

It does not matter if the wall splitting body (B) is present only at both ends in the length direction of the male molded surface fastener, but if it is present over the entire length of the engaging element train, it does not matter. The wall split body (B) provided between the rows of engaging elements prevents the loop-shaped engaging element of the engaging partner from entering the hook of the male engaging element, and engages the male molded hook-and-loop fastener. The ability may be reduced. In order to prevent such a situation from occurring, the tip of the male engaging element and the wall divider (B) are provided so that the filament of the loop-shaped engaging element can penetrate into the hook of the male engaging element. It is preferable to provide a sufficient space between the wall divisions (B) arranged in the space or in the row direction.

For example, as shown in FIG. 5, the height of the wall dividing body (B) provided between the rows of engaging elements is made lower than the height ( _h3 ) of the tip of the male engaging element from the substrate surface. It is preferable that the height of the wall splitting body (B) is 0.1 mm or more lower than the height of the male engaging element ( _h3 ). As a result, the filament of the loop-shaped engaging element can freely penetrate into the hook of the male engaging element. In FIG. 5, a line near 2/3 of the height (h ₁ ) from the substrate surface of the male engaging element (1f) indicates the position of the tip of the male engaging element.

Further, the length of the wall dividing body (B) and the length of the gap portion are set so that the wall dividing body (B) does not exist but the gap portion exists on both side surfaces of the tip portion of the male engaging element. The shape of the gap may be adjusted according to the arrangement state of the male engaging elements. Alternatively, a method may be used in which a space is provided in the gap between the wall dividing body (B) and the male engaging element so that the filament of the loop-shaped engaging element can freely penetrate. Sufficiently between the tip of the male engaging element and the wall divider (B) so that the looped engaging element can penetrate into the hook of the male engaging element using one or more of these. It is preferable to provide a space.

As shown in FIG. 6, in order to efficiently prevent the adhesive liquid from entering the engaging element region without significantly impairing the engaging force, as shown in FIG.
A plurality of engagement element rows in which a large number of male engagement elements (1f) are arranged in a row in the direction (P) exist in parallel.
A plurality of engaging element trains (B) in which a plurality of male engaging elements are lined up along the direction (Q) exist in parallel.
One row of the engaging element rows (B) of 2 to 5 rows is a row in which the wall splitting body (B) exists between two adjacent male engaging elements in the row.
The other rows 1 to 4 are rows in which the wall splitting body (B) does not exist between two adjacent male engaging elements in the row, and the plurality of wall splitting bodies (B) are oriented. Engagement element regions arranged in a row in (P) are preferable.

That is, as shown in FIG. 6, the engaging element row (B) in which one row of male engaging elements (1f) and the wall splitting body (B: 3w) alternately exist is the wall splitting body (B). : It is preferable to arrange every 1 to 4 rows of engaging element rows (B) not including 3w) (in FIG. 6, every 2 rows of engaging element rows (B) not including the wall dividing body (B: 3w). One row of engaging element rows (B) in which male engaging elements (1f) and wall splitting bodies (B: 3w) are alternately present is arranged). In such an arrangement, the distance between the two wall dividing bodies (B) adjacent to each other in the direction (P) is longer than the length (L ₄ ) of the cut portion (4) of the wall region (2).

In this way, when the wall splitting body (B) is also arranged in the engaging element region (1) as described above, when the male molded surface fastener is cut to an arbitrary length that is normally used and used. In addition, it is possible to prevent the intrusion of the adhesive liquid from the lengthwise end portion of the engaging element region (that is, the end portion orthogonal to the boundary between the engaging element region and the wall region), and from the entire circumference of the engaging element region. It is possible to highly prevent the adhesive liquid from entering the engaging element region. Since it is possible to prevent the adhesive liquid from entering from both ends of the engaging element region, it is possible to more effectively prevent the engagement ability from being lowered as compared with the case where the wall dividing body (B) is not arranged.

The male molded surface fastener of the present invention is made of an ordinary thermoplastic resin, and examples of such a thermoplastic resin include polyolefin resins such as polyethylene, polypropylene, and ethylene-vinyl alcohol copolymer, polyethylene terephthalate, and polybutylene. In addition to thermoplastic non-epolymer resins such as polyester resins such as terephthalate, polybutylene succinate and polylactic acid, and polyamide resins such as nylon 6, nylon 66 and semi-aromatic polyamide, polyolefin resins and polyester elastomers, Examples thereof include thermoplastic elastomer resins such as polystyrene-based elastomers, polyurethane-based elastomers, polyamide-based elastomers, and soft polyvinyl chlorides, which are used alone or in combination.

Among them, the semi-aromatic polyamide of the male molded surface fastener of the present invention can maintain a high engaging force for a long period of time even under harsh conditions such as automobile interior materials that are exposed for a long time under high temperature conditions. Preferred as a material. Semi-aromatic polyamides are usually obtained from aliphatic diamines and aromatic dicarboxylic acids or derivatives thereof.

Examples of aliphatic diamines forming semi-aromatic polyamides are 1,6-hexanediamine, 1,8-octanediamine, 1,9-nonanediamine, 1,10-decanediamine, 1,11-undecanediamine, 1 , 12-Dodecanediamine, 2-methyl-1,5-pentanediamine, 3-methyl-1,5-pentanediamine, 2,2,4-trimethyl-1,6-hexanediamine, 2,4,4-trimethyl Examples thereof include -1,6-hexanediamine, 2-methyl-1,8-octanediamine, 5-methyl-1,9-nonanediamine and the like. Of these, 1,9-nonanediamine or a combination of 1,9-nonandiamine and 2-methyl-1,8-octanediamine is preferable in terms of retention of engaging force at high temperature and excellent moldability.

When 1,9-nonandiamine and 2-methyl-1,8-octanediamine are used in combination as an aliphatic diamine, the molar ratio of 1,9-nonandiamine: 2-methyl-1,8-octanediamine is 40:60 to A ratio of 95: 5 is preferable in terms of retention of engaging force at high temperature and formability.

As the aromatic dicarboxylic acid, which is the other component forming the semi-aromatic polyamide, an aromatic dicarboxylic acid mainly composed of terephthalic acid is preferable in terms of lodging resistance and moldability at the time of crimping, and also in terms of engaging force. Of these, it is most preferable that the total amount of the aromatic dicarboxylic acid is terephthalic acid.

Semi-aromatic polyamide is an extremely rigid resin. When the male molded surface fastener of the present invention is molded from such a rigid resin by an injection molding method as described later, the male engaging element is cut or engaged when it is pulled out from the cavity during molding. Cracks may occur in the particularly bent part of the element. In order to prevent this, it is preferable to add a small amount of elastomer to such a semi-aromatic polyamide.

The elastomer to be added is a material having elasticity and flexibility like rubber, especially near room temperature, and which can be easily molded by softening at a molding temperature, specifically, a styrene-based elastomer. Examples thereof include vinyl chloride-based, olefin-based, urethane-based, ester-based, and amide-based elastomers.

The elastomer is a polyolefin-based elastomer, particularly a polyolefin-based elastomer modified with maleic anhydride, and the semi-aromatic polyamide has a diamine component (1,9-nonanediamine and 2-methyl-1,8-octanediamine) and a dicarboxylic acid component. In the case of a terminal amino group-containing polyamide obtained from (terephthalic acid), the terminal amino group reacts with a functional group based on maleic anhydride to improve the integrity of the semi-aromatic polyamide and the elastomer, resulting in a male type. Molding surface It is possible to highly prevent the male engaging element from being cut or cracked when the male engaging element is pulled out from the cavity due to phase separation during molding of the fastener.

The amount of the elastomer added to the semi-aromatic polyamide is preferably 2 to 20% by weight based on the weight of the semi-aromatic polyamide. If it is within the above range, the effect of addition can be sufficiently obtained, the viscosity of the blended molten resin does not become too high, it becomes easy to press-fit it into the cavity, and the effect of using a semi-aromatic polyamide can be sufficiently obtained. .. It is more preferably in the range of 4 to 16% by weight, still more preferably in the range of 7 to 13% by weight. Further, other resins, stabilizers, colorants and the like can be added to the semi-aromatic polyamide within a range that does not significantly impair the performance.

In order to reduce the amount of adhesive liquid flowing into the surface side, it is conceivable to thicken the substrate and keep the engaging element surface away from the adhesive liquid application surface (the back surface of the male molded surface fastener). It gets hard. In particular, when it is made of semi-aromatic polyamide, when this method is used, the substrate constituting the hook-and-loop fastener becomes rigid, the bendability is lost, and the problem that the adhesiveness is lowered tends to occur. However, by providing the protrusion on the back surface side of the substrate, the adhesive liquid can be held on the back surface side without significantly impairing the flexibility of the substrate, so that the protrusion reduces the inflow of the adhesive liquid to the front surface side. Preferred above. Further, by providing the protrusion, the back surface of the hook-and-loop fastener is less likely to slip, which facilitates positioning on the back surface of the interior material for automobiles.

Next, a method for manufacturing the male molded surface fastener of the present invention will be described. For example, a metal roll having a wall-divided body (A) -shaped cavity group on both sides of a male engaging element-shaped cavity group is used, and a resin melt is formed into a sheet on the surface. A resin sheet having an engaging element region (1) in the center and wall regions (2) on both sides thereof by being flowed and the melt is press-fitted into the cavity, and after solidification, it is peeled off from the metal roll surface and at the same time pulled out from the cavity. Is used.

An example of a method of pulling out from this cavity will be described in more detail. A ring-shaped mold with a thickness of 0.1 to 0.3 mm in which a large number of cavities in the shape of the wall partition (A) are carved on the outer circumference at equal intervals, and the thickness is the same without carving such cavities. A wall having a large number of cavities for the wall dividing body (A) on the outer peripheral surface by alternately stacking 0.15 to 0.5 mm metal rings so that the position of the wall dividing body (A) is different from that of the adjacent wall. A group of rings is prepared.
A ring-shaped mold with a thickness of 0.15 to 0.5 mm in which an inverted J-shape is carved on the outer circumference, a metal ring of the same diameter without such a shape, and the above-mentioned inverted J-shape. A ring-shaped mold with a thickness of 0.15 to 0.5 mm and the same diameter, with an inverted J-shaped shape bent in the opposite direction carved on the outer circumference, and a metal with the same diameter that does not carve such a shape. For engaging elements that have a large number of inverted J-shaped engaging element-shaped cavities and inverted J-shaped engaging element cavities that are bent in the opposite direction on the outer peripheral surface by stacking the manufactured rings in order. A ring group is prepared and superposed on the wall ring group.
Next, the wall ring group created by the same method as the wall ring group is superposed on the engaging element ring group, and a region having a large number of inverted J-shaped engaging element-shaped cavities on the outer periphery in the central portion. A mold roll having a region having a large number of wall-divided body (A) -shaped cavities on the outer periphery is prepared on both sides thereof.

In the above description, the metal ring 1 in which the cavity is not carved in the ring-shaped mold having the inverted J-shaped cavity facing in the opposite direction to the ring-shaped mold having the inverted J-shaped cavity. Although the case where the sheets are sandwiched and stacked alternately has been described, two or more pieces may be alternately stacked by sandwiching a metal ring in which the cavity is not carved.

On the surface of such a metal roll, cavities for the wall dividing body (A) are arranged in rows in the circumferential direction, and the metal roll width direction is such that such rows form a wall region. There are multiple columns in.
Further, a plurality of inverted J-shaped cavities bent in the circumferential direction of the roll are arranged in a row in the circumferential direction, and the metal roll width direction is such that such rows form an engaging element region. There are multiple columns in. The bending direction of the inverted J-shaped cavity is reversed in units of one row or in units of multiple rows.
The inverted J-shaped cavity becomes thinner from the metal roll surface toward the tip in order to prevent cutting when it is pulled out, and gradually bends in the circumferential direction of the metal roll from the middle, and the tip approaches the metal roll surface. Looking in the direction.

As a specific method for forming a male-molded hook-and-loop fastener by flowing a molten resin on the surface of such a metal roll,
The resin melt is extruded into the gap between the metal roll and another drum roll located opposite to the metal roll and pressed to fill the cavity with the melt and form a sheet having a uniform thickness on the roll surface. ,
While the mold roll is rotating, the refrigerant that constantly circulates in the roll cools and solidifies the melt in the cavity, and the clearance is adjusted so that the substrate of the obtained male molded surface fastener has a uniform thickness. Stretched by the nip roller
The cooled and solidified sheet is peeled off from the surface of the mold roll, and the male engaging element and the wall splitting body (A) are pulled out from the cavity.
As a result, there is an engaging element region (1) in which a large number of male engaging elements are present on the surface, and a wall region (2) having a large number of wall dividers (A) on both sides thereof. The male molded surface fastener sheet of the present invention can be obtained.

In order to provide protrusions on the back surface of the substrate, a recess for protrusions is provided on the surface of the drum roll located at a position facing the metal roll, and the cavity is filled with the resin melt, and at the same time, the resin melt is also filled in the recess. It is preferable to use a method of filling, solidifying, and then peeling from the surface of the drum roll to form protrusions on the back surface of the substrate.

In order to ensure that the wall splitting body (B) also exists in the engaging element region, an inverted J-shape is inserted between the ring-shaped molds in which an inverted J-shaped shape is carved on the outer circumference. Replace the metal ring of the same diameter with no carved mold shape with a ring-shaped mold with the wall split body (B) shape carved on the outer circumference, or replace the wall split body (B) shape on the outer circumference. It is preferable to use a method of replacing such a shape with a combination of a ring-shaped mold carved in a circle and a thin metal ring not carved on the outer circumference.

When inserting a ring-shaped mold with the wall-split body (B) shape carved on the outer circumference between the ring-shaped molds with the inverted J-shaped shape carved on the outer circumference, the ring-shaped mold Even if the wall-divided body (B) shape is carved at intervals on the entire outer circumference of the die, or the wall-divided body (B) shape is formed only in the portion corresponding to the end in the length direction of the male molded surface fastener. May be carved. When the wall dividing body (B) shape is carved on the entire outer circumference of the ring-shaped mold, as described above, the filament of the loop-shaped engaging element is free in the hook of the male engaging element. It is preferable to devise so that it can invade.

For example, as mentioned above
The height of the wall dividing body (B) is set to be lower than the height of the tip of the male engaging element from the substrate surface.
The length of the wall dividing body (B), the length of the cutting part, so that the wall dividing body (B) does not exist but the cut portion exists on both side surfaces of the tip portion of the male type engaging element. And the shape of the cut part is adjusted to the arrangement state of the male engaging element, and the shape and the overlapping state of the ring mold are adjusted.
No cavity is carved on the outer circumference between the ring-shaped mold with the inverted J-shaped shape carved on the outer circumference and the ring-shaped mold with the wall split body (B) shape carved on the outer circumference. A method such as inserting a thin metal ring or setting the spacing of the wall dividing body (B) shape carved on the outer circumference to 1/2 to 1/5 of the spacing of the inverted J-shaped shape is used.

The male molded surface fastener tape obtained in this way is cut to an appropriate length and attached to the back surface of the interior material for automobiles with an adhesive. As such an interior material, a material generally used as a ceiling material or a floor material for an automobile can be used. For example, a sheet obtained by laminating a non-woven fabric, a glass fiber mat, a foamed resin layer, a pile fabric, a woven or knitted fabric, natural or artificial leather, etc., and having a non-woven fabric layer on the back surface side may be mentioned.

The male molded surface fastener of the present invention is attached to the back surface of such an interior material for automobiles with an adhesive. Examples of the adhesive used include solvent-based adhesives, emulsion-based adhesives, hot-melt-based adhesives, and curable adhesives. In particular, moisture-curable instant adhesives have adhesive strength even under high temperature conditions. Since it does not deteriorate and can be cured and bonded in a short period of time, it is preferable in terms of handleability and workability, and further in terms of adhesive strength.

Among them, cyanoacrylate-based instant adhesives are preferable because they have high adhesive strength, excellent adhesive strength does not decrease even under high temperature conditions, curing time is short, and workability is excellent. Especially, ethyl cyanoacrylate-based instant adhesives are preferable. Adhesives are particularly preferred because they provide particularly excellent adhesive strength.

On the other hand, when such an instant adhesive is applied thickly in order to increase the adhesive strength, the adhesive liquid squeezes out from the end of the male molded surface fastener, and it penetrates into the surface fastener surface to engage with the surface fastener. Is likely to cause the problem of lowering. The male molded surface fastener of the present invention is extremely effective in preventing this. The viscosity of the adhesive liquid when used is in the range of 80 to 220 mPa · s at 25 ° C. in terms of adhesive strength, and further, in the wall region (2) existing on both sides of the male molded surface fastener of the present invention. It is preferable because it can sufficiently express its function. Further, the amount of the adhesive applied is preferably 0.0125 to 0.0375 g per 1 ^cm2 of the area to be attached.

The case where the male molded surface fastener of the present invention is attached to the back surface of the interior material for automobiles has been described above. It is also used when attaching the hook-and-loop fastener to the adherend where the adhesive liquid that sticks out from the end flows into the engaging element surface of the hook-and-loop fastener and as a result, the engaging force may decrease. can.

The present invention will be specifically described below with reference to Examples. In the embodiment, the adhesive liquid flows into the engaging element surface of the male molded surface fastener surface by observing the surface of the male molded surface fastener adhered to the back surface of the automobile ceiling material with a loupe and engaging element. It was observed whether or not the adhesive had flowed into the area, and how the adhesive that had flowed into the wall area had solidified.

Further, for the male molded surface fastener attached with an adhesive, the engaging force at room temperature and 110 ° C. was measured according to the method of JIS L3416. A polyphenylene sulfide woven surface fastener (Magic Tape B48000.00 manufactured by Kuraray Fastening Co., Ltd.) was used as a loop-shaped engaging element to be an engaging partner.

Example 1
[Preparation of resin used for molding]
As the semi-aromatic polyamide, a mixed diamine in which 50 mol% of the diamine component is 1,9-nonanediamine and 50 mol% is 2-methyl-1,8-octanediamine is used, and terephthalic acid is used as the aromatic dicarboxylic acid component. Using the terminal amino group-containing semi-aromatic polyamide (semi-aromatic polyamide geneSTA manufactured by Kuraray Co., Ltd., [η] = 1.20 dl / g) obtained as an elastomer, a maleic anhydride-modified polyolefin-based elastomer (manufactured by Mitsui Kagaku Co., Ltd.) Toughmer) was added in a proportion of 10% by weight based on the semi-aromatic polyamide, and carbon black powder was added in an amount of 0.2% by weight based on the total amount of the semi-aromatic polyamide and the elastomer, and the mixture was mixed and pelletized. bottom.

[Preparation of mold used for molding]
Next, as a mold,
A ring-shaped mold with a thickness of 0.2 mm and a diameter of 212 mm, in which the shape of the wall split body (A) is carved on the outer circumference, and a ring-shaped mold with a flat outer peripheral surface having a flat thickness of 0.25 mm and a diameter of 0.25 mm. The position of the wall dividing body (A) is set to the adjacent ring mold so that the center of the wall dividing body (A) is the cut portion at both ends of the wall dividing body (A) on the adjacent wall with the 212 mm metal ring. A mold roll (1) was prepared by staggering and alternately stacking a total of 21 rolls.
Apart from that
A ring-shaped mold with a thickness of 0.30 mm and a diameter of 212 mm, in which the shape of the hook type engaging element is carved on the outer circumference.
A metal ring with a flat outer circumference of 0.30 mm and a diameter of 212 mm that does not have such a shape.
A ring-shaped mold with a thickness of 0.30 mm and a diameter of 212 mm, which has the same shape as the hook-type engaging element but has the hook bent in the opposite direction, carved on the outer circumference. A mold roll (2) was prepared by stacking a total of 70 metal rings having a thickness of 0.30 mm and a diameter of 212 mm having a flat outer peripheral surface without engraving such a shape in this order.
Further, the mold roll (3) was produced in the same manner as the mold roll (1).
The mold roll (1), the mold roll (2), and the mold roll (3) are superposed and integrated in this order, and the cavity of the hook type engaging element shape and the opposite direction are directed to the outer peripheral surface thereof. A mold roll having a width of 20 mm having a large number of hook-shaped engaging element-shaped cavities and a wall region having a width of 4 mm having a large number of wall-divided body (A) -shaped cavities on both sides thereof was produced. ..

[Manufacturing of male molded surface fasteners]
A metal roll by extruding a melt (temperature: 300 ° C.) of a resin pellet obtained by adding the above-mentioned elastomer to the above-mentioned semi-aromatic polyamide into the gap between the above-mentioned mold roll and the drum roll existing at a position opposite to the above-mentioned mold roll and pressing the metal roll. The cavity was filled with the resin melt and a sheet having a uniform thickness was formed on the roll surface. While the mold roll was rotating, the resin in the cavity was cooled and solidified by water constantly circulating in the roll, and then stretched by a nip roll having a gap adjusted so that the substrate thickness was 0.20 mm. The cooled and solidified sheet was peeled off from the surface of the mold roll to produce a black male molded surface fastener tape.

[The shape of the obtained male molded surface fastener]
The obtained male molded surface fastener tape has a shape as shown in FIG. 1, that is, a wall having a width of 4 mm on both sides of an engaging element region (1) having a width of 20 mm in which a large number of male engaging elements are present. The tape had a region (2) parallel to the engaging element region (1).
The male engaging elements (1f) existing in the engaging element region (1) are arranged in a row in the wall length direction to form an engaging element row, and a plurality of engaging element rows are engaged. They were lined up parallel to the direction of the element train. As shown in FIG. 4, the male engaging element had a uniform width in the directions orthogonal to both the wall length direction and the height direction. As shown in FIG. 2, the male engaging element gradually narrows from the root to the tip without branching in the middle or at the tip, and gradually bends in the wall length direction from the middle to the tip. The portion had a shape facing slightly closer to the substrate. Furthermore, a plurality of male engaging elements are lined up in a row in the same direction as the bending direction of the male engaging element, and the male engaging element is bent in a row unit in the opposite direction. It had an inverted J-shape.

The shape of the male engaging element is as shown in FIGS. 2 to 4 (however, the back surface side protrusion does not exist), and the height (h ₁ ) is 1.15 mm from the substrate surface, and the male type is engaged. The lower end of the tip of the combined element approached the substrate by a distance equivalent to 5% of the height of the male engaging element (h ₁ ) with respect to the height of the lower end of the top of the male engaging element. .. The width (w ₁ ) of the male engaging element is 0.30 mm, the spread of the base of the engaging element is 1.0 mm, and the male engaging element is 2/3 of the height of the engaging element from the base. It started to bend gradually from the vicinity. The male engaging elements are lined up in a row, the bending direction of the male engaging elements is the row direction, the density of the male engaging elements is 110 pieces / cm ² , and the thickness of the substrate is 0. The distance between adjacent male engaging elements was .20 mm, and the distance (b ₁ ) was 0.3 mm.

Further, in the wall region (2) existing on both sides so as to sandwich the engaging element region (1), walls extending in parallel along the engaging element region are parallel to each other in 10 rows with an interval of 0.3 mm. It existed. In each wall, cut portions (4) extending from the surface of the substrate to the top were arranged at equal intervals (error of 5% or less) while penetrating the wall in the thickness direction. The wall was divided into a large number of wall-divided bodies (A) (2w) by the cut portion (4) to form a row of wall-divided bodies (A) (2w). The height (h ₂ ) of the wall dividing body (A) is 0.5 mm, and the place where the cut portion (4) of the wall exists is as shown in FIG. 2, and the wall dividing body (A) ( It was the wall surface of 2w). Further, the length (L ₄ ) of each cut portion (4) existing at both ends of the wall divided body (A) (2w) in the wall length direction is 0.65 mm, and is sandwiched between the cut portions (4). The length (L ₂ ) of the existing wall divided bodies (A) and (2w) in the wall length direction was 1.35 mm. The length of the cut portion (4) in the wall length direction is the same from the base to the top (error is 5% or less), and the shape of the cut portion (4) seen from the direction orthogonal to the wall surface is shown in the figure. It was a parallelogram as shown in 2. Further, the thickness (W ₂ ) of the wall divided bodies (A) and (4) was 0.2 mm, and the density of the wall divided bodies (A) and (4) in the wall region was 97 pieces / cm ² . The width of the engaging element region (1) was 20 mm, and the width of the wall region (2) was 4 mm, respectively.

[Attach the obtained male molded surface fastener to the back side of the interior material for automobiles]
Such a male molded surface fastener is cut to 40 mm, and an instant adhesive made of ethyl cyanoacrylate having a viscosity of 150 mPa · s at 20 ° C. is applied to the back surface at a coating amount of 0.03 g / cm ² immediately. The adhesive-coated surface was overlapped on the back surface of the ceiling material for automobiles, and both were strongly pressed to bond them. As a result, both were firmly adhered. In addition, 10% by weight of a titanium oxide-based white pigment was added to the adhesive so that the presence of the used adhesive could be visually observed.

The car ceiling material used was
Both sides of a foamed resin layer having a thickness of 8 mm made of foamed polyurethane were covered with a glass fiber mat (grain: 100 mm / m ² ) impregnated with a thermosetting isocyanate compound.
Further, one side (front surface) is covered with artificial leather, the other side (back surface) is covered with a soft foamed polyurethane layer, and then an entangled non-woven fabric made of polyester fiber.
On the back surface side, on both sides of a polypropylene layer having a thickness of 1 mm, a laminate made of a film made of a hot melt polyolefin layer and an entangled non-woven fabric made of polyester fibers having a thickness of 1 mm is laminated so that the entangled non-woven fabric side is on the outside. It is an integrated product.

[Attachment state and engagement force of male molded surface fastener after attachment]
When the surface of the bonded male molded surface fastener was observed with a loupe, the adhesive protruding from the end flowed widely and low between the walls of the wall area (2) at both ends of the male molded surface fastener. It was confirmed that the material did not flow into the engaging element region (1) at all. Some of the adhesive was agglomerated and existed on the wall partition, but most of the adhesive liquid widely flowed thinly into the gaps between the walls in the wall area (2) and spread between the walls. Was confirmed. As a result of measuring the initial engaging force of this male molded surface fastener at room temperature, the tensile shear strength was 42.0 N / cm ² and the peel strength was 2.8 N / cm.

Comparative Example 1
Example 1 except that the wall regions on both sides do not exist and a male molded surface fastener having a width of 28 mm covered with a male engaging element having the same shape as that of Example 1 is used up to both ends. A male molded hook-and-loop fastener was attached to the back surface of the automobile ceiling material by the same method as in the above.

When the surface of the bonded male molded surface fastener was observed with a loupe in the same manner as in Example 1, the adhesive liquid protruding from the end portion was found between both ends of the male molded surface fastener and between the male engaging elements and the surface. Was flowing into. In particular, the male engaging element near the end was covered with an adhesive, and in the vicinity of the end, there was a place where the adhesive was present in a raised mass on the male engaging element. .. As a result of measuring the initial engaging force of this male molded surface fastener at room temperature, the tensile shear strength was 27.0 N / cm ² and the peeling strength was 1.8 N / cm. It turned out to be inferior in that. Further, the adhesive adhered dirty to the surface of the male engaging element, which greatly reduced the commercial value in terms of appearance.

Examples 2 to 3, Comparative Examples 2 to 4
In the first embodiment, the height (h ₂ ) of the wall dividing body (A) (2w) of the wall region (2) is 0.32 times the height (h ₁ ) of the male engaging element (Example 2). ), 0.62 times (Example 3), 0.21 times (Comparative Example 2), 0.80 times (Comparative Example 3), 1.0 times (Comparative Example 4), but the same as in Example 1. A male molded surface fastener was manufactured. Then, each of the obtained five types of male molded surface fasteners was attached to the back surface of the ceiling material for automobiles by the same method as in Example 1.

When the surface of the bonded male molded surface fastener was observed with a loupe in the same manner as in Example 1, in Example 2, although the spread of the adhesive along the wall partition was inferior to that of Example 1, the adhesive was adhered. The agent hardly penetrated the engaging element region. In Example 3, some spots where the adhesive was present in the form of a lump on the wall splitting body were observed, but the height of the lump was lower than the height of the male engaging element (h ₁ ). Also, the adhesive spread along the wall dividers, and the adhesive hardly penetrated the engaging element region.

On the other hand, in Comparative Example 2, the adhesive does not spread along the wall dividing body but reaches the engaging element region beyond the inner wall dividing body, and the male engaging element near the end is formed by the adhesive. It was observed to be covered. From this, it was confirmed that the inflow of the adhesive cannot be prevented only by the existence of the wall split body that does not satisfy the requirements of the present invention.
In Comparative Example 3, it was confirmed that a small part of the adhesive was lumpy and swelled on the wall splitting body, and as a result, it was inferior to that of Example 1 in terms of engaging force. Further, in Comparative Example 4, as in Comparative Example 3, a small part of the adhesive was lumped and swelled on the wall splitting body higher than that of Comparative Example 3, and as a result, the comparison was made in terms of engaging force. It was confirmed that it was inferior to that of Example 3.

As a result of measuring the initial engaging force of these male molded surface fasteners at room temperature,
In Example 2, the tensile shear strength is 37.0 N / cm ² , the peel strength is 2.5 N / cm, and the peel strength is 2.5 N / cm.
In Example 3, the tensile shear strength is 36.0 N / cm ² and the peel strength is 2.3 N / cm.
It was found that both of them were slightly inferior to those of Example 1 in terms of engaging force. on the other hand,
In Comparative Example 2, the tensile shear strength is 23.0 N / cm ² , the peel strength is 1.5 N / cm, and
In Comparative Example 3, the tensile shear strength is 30.0 N / cm ² , the peel strength is 2.0 N / cm, and
In Comparative Example 4, the tensile shear strength is 28.0 N / cm ² and the peel strength is 1.8 N / cm.
It was found that it was significantly inferior to that of Example 1.

Comparative Example 5
In the first embodiment, a male molded surface having a wall region in the same manner as in the first embodiment except that the wall existing in the wall region (2) is made into a continuous wall without a cut. A fastener was manufactured and attached to the back surface of an automobile ceiling material in the same manner as in Example 1.

When the surface of the bonded male molded hook-and-loop fastener was observed with a loupe in the same manner as in Example 1, although the wall was present, the adhesive hardly spread along the wall and overcame the upper surface of the wall in many places. It was observed that the male engaging element near the end was covered with an adhesive. As a result of measuring the initial engaging force of this male molded surface fastener at room temperature, the tensile shear strength was 30.0 N / cm ² and the peel strength was 2.0 N / cm, which were compared with those of Example 1. It was significantly inferior.

Examples 4-5
In the first embodiment, the height (h ₁ ) of the male engaging element is changed to 1.5 mm, and the height (h ₂ ) of the wall splitting body (A) is also changed to 0.7 mm accordingly. Manufactured a male molded surface fastener in the same manner as in Example 1, and attached it to the back surface of an automobile ceiling material in the same manner as in Example 1 (Example 4).
Further, the number of rows of the wall dividing body in which the wall region (2) exists was reduced to 7 rows, and the height (h ₂ ) of the wall dividing body (A) was increased as it approached the engaging element region (1). .. That is, the height (h ₂ ) of the wall dividing body (A) in the fourth row is the same as that of the first embodiment, and the height (h ₂ ) of the wall dividing body (A) in the outermost row is set to four rows. Male molding in the same manner as in Example 1 except that the height (h ₂ ) of the wall dividing body (A) in the row closest to the engaging element region is 10% higher than that in the fourth row. A surface fastener was manufactured and attached to the back surface of an automobile ceiling material in the same manner as in Example 1 (Example 5).

When the surface of the male molded surface fastener bonded in Examples 4 and 5 was observed with a loupe in the same manner as in Example 1, the adhesive was applied to the wall regions (2) at both ends of the male molded surface fastener. ), It flowed widely and thinly between the walls, and did not flow into the engaging element region (1) at all. Furthermore, it can be confirmed that the adhesive that has flowed into the wall area (2) does not solidify in one place and does not form a raised lump, but flows thinly into the gaps between the walls of the wall area (2) and spreads between the walls. rice field.

As a result of measuring the initial engaging force of this male molded surface fastener at room temperature,
In Example 4, the tensile shear strength is 39.0 N / cm ² , the peel strength is 2.6 N / cm, and the peel strength is 2.6 N / cm.
In Example 5, the tensile shear strength is 40.0 N / cm ² and the peel strength is 2.7 N / cm.
Both were excellent, almost comparable to those of Example 1.

Example 6
In Example 1 above, the shape of the male engaging element is carved on the outer circumference and inserted between ring-shaped molds with a thickness of 0.30 mm, and the outer circumference has a flat thickness of 0.30 mm. The metal ring was replaced with the following ring-shaped mold and metal ring combination. That is, it is a ring-shaped mold similar to the ring-shaped mold having a thickness of 0.2 mm and a diameter of 212 mm in which the shape of the wall-divided body (A) used in Example 1 is carved on the outer circumference, but is male. A ring-shaped mold in which the shape of one wall-divided body (B) is carved for three mold engaging elements, and a flat outer peripheral surface having a thickness of 0.05 mm on both sides of which the shape is not carved. A male molded surface fastener was manufactured in the same manner as in Example 1 except that the combination was replaced with a combination sandwiched between metal rings having a diameter of 212 mm.

In the obtained male molded surface fastener, a row of wall splitting bodies (B) was present between the rows of engaging elements in the engaging element region. The height of the wall dividing body (B) existing between the engaging elements is 0.18 mm lower than the height (h ₃ ) of the tip of the male engaging element from the substrate surface, and further, the male engaging element is engaged. Both sides of the element coincided with the cut. Further, there is a gap between the male engaging element row and the wall splitting body row, which allows the loop-shaped engaging element to easily enter the hook of the male engaging element. ..

As shown in FIG. 6, as in the first embodiment, a plurality of male engaging elements are arranged in the direction (Q) to form a plurality of parallel engaging element trains. Male engaging elements (1f) and wall dividers (3w) are alternately present in one row with respect to the three rows of engaging element rows extending along this direction (Q), and in the other two rows. Did not have a wall divider (3w). That is, it was the same as that of the first embodiment except that the engagement element row including the wall dividing body (3w) was present at a ratio of one row to the three engagement element rows. It was cut into a length of 40 mm in the same manner as in Example 1 and attached to the back surface of the ceiling material for automobiles.

When the surface of the bonded male molded surface fastener was observed with a loupe, the adhesive protruding from both ends in the width direction of the surface fastener was observed in the wall region of both ends of the male molded surface fastener as in Example 1. It flowed widely and thinly between the walls, but did not flow into the engaging element area at all. Furthermore, the adhesive that flowed into the wall area was wide and thin and spread in the gaps between the walls. Further, the adhesive protruding from the end portion in the length direction of the male molded surface fastener was blocked by the outermost wall dividing body (B) and the cut portion in the length direction, and hardly penetrated into the inside thereof. .. In this respect, the invasion of the adhesive liquid was completely blocked as compared with that of Example 1.
As a result of measuring the initial engaging force of this male molded surface fastener at room temperature, the tensile shear strength was 42.4 N / cm ² and the peel strength was 3.0 N / cm, which were slightly lower than those of Example 1. Although it had excellent engagement force.

Example 7
In the first embodiment, the surface of the drum roll to be attached at a position facing the metal roll has a recess for protrusion (height 1.0 mm, width 0.5 mm, and is bent in one direction from the roll surface to the bottom of the recess. ) Was present at a density of 1 on the roll surface of 0.25 cm ² , and the same as in Example 1 except that when the resin melt was filled in the cavity of the metal roll, it was also filled in the recess for protrusion of the drum roll. And manufactured a male molded surface fastener. When the obtained male molded surface fastener and the male molded surface fastener of Example 1 were similarly bent in the width direction and the length direction, there was no difference in bendability. The obtained male molded surface fastener was attached to the back surface of the ceiling material for automobiles by the same method as in Example 1. However, the amount of the adhesive liquid applied was increased by 20% as compared with the case of Example 1.

When the surface of the bonded male molded surface fastener was observed with a loupe in the same manner as in Example 1, the adhesive reached the engagement element region even though the amount of the adhesive liquid applied was larger than that of Example 1. The amount of invasion was less than that of Example 1. From this, if the protrusion on the back surface side is present, even if the amount of the adhesive liquid used is large, it is possible to prevent the adhesive liquid from flowing into the engaging element region even more than in the case of the first embodiment. It was confirmed that it was good, and it was confirmed that it was excellent in terms of appearance. As a result of measuring the initial engaging force of this male molded surface fastener at room temperature, the tensile shear strength was 43.5 N / cm ² and the peel strength was 2.8 N / cm.

1: Engagement element region 2: Wall region 1f: Male engagement element 2w: Wall split body (A)
3w: Wall split body (B) provided between the engagement element rows
3: Substrate 4: Cut portion 5: Back surface side protrusion 6: Engagement element row (B)
h ₁ : Height of the male engaging element h ₂ : Height of the wall dividing body (A) h ₃ : Height of the tip of the male engaging element from the substrate surface L ₂ : Wall of the wall dividing body (A) Directional length L ₄ : Length of the cut in the direction of the wall

Claims

Resin sheet-like substrate,
An engaging element region in which a plurality of male engaging elements made of the same resin rising from the surface of the sheet-shaped substrate exists, and rising from the surface of the sheet-shaped substrate and extending in parallel along the engaging element region. In the male molded surface fastener in which wall regions made of the same resin exist in parallel in a plurality of rows at regular intervals on both sides of the engaging element region, the following conditions (1) to (3). ) Is satisfied with the male molded surface fastener.
(1) In each wall, a plurality of cuts penetrating the wall in the thickness direction and extending from the lower part to the top of the wall are arranged at equal intervals, and the wall is divided into a plurality of walls by the cuts. Divided into (A), the walls form a row of wall dividers (A),
(2) The height of the wall dividing body (A) is 0.25 to 0.7 times the height of the male engaging element.
(3) The part corresponding to the position where the cut portion of one wall exists is the wall surface of the wall dividing body (A) in the adjacent wall.
The length in the wall length direction of each cut portion existing at both ends of the wall division body (A) is 0 of the length in the wall length direction of the wall division body (A) sandwiched between the cut portions. The male molded surface fastener according to claim 1, which is 3 to 0.7 times.
The male molded surface fastener according to claim 1 or 2, wherein five or more rows of walls exist in parallel along the engaging element region in each wall region.
Any of claims 1 to 3, wherein the length of the cut portion in the wall length direction is the same from the base to the top, and the shape of the cut portion viewed from the direction orthogonal to the wall surface is a quadrilateral. The male molded surface fastener according to item 1.
The male molded surface fastener according to any one of claims 1 to 4, wherein the length of the wall split body (A) in the wall length direction is 2 to 6 times the height of the wall split body (A).
According to any one of claims 1 to 5, the thickness of the wall dividing body (A) is 0.1 to 0.3 mm, and the height of the wall dividing body (A) is 0.3 to 0.8 mm. The male molded surface fastener described.
In the engagement element region, there are a plurality of engagement element rows in which a plurality of male engagement elements are arranged in a row parallel to the wall region, and the wall is divided between adjacent engagement element rows. The male molded surface fastener according to any one of claims 1 to 6, wherein the body (B) is present.
A plurality of engagement element rows (B) in which a plurality of male engagement elements are arranged in a direction perpendicular to the engagement element row direction exist in parallel, and the engagement element rows (B) of 2 to 5 rows are present. One row is a row in which a wall dividing body (B) is present between two adjacent male engaging elements in the row, and the other 1 to 4 rows are two adjacent male engaging elements in the row. 7 is a row in which the wall splitting body (B) does not exist between the male engaging elements of the above, and a plurality of wall splitting bodies (B) are lined up in a row in the engaging element row direction. Male molded surface fastener described in.
The male molded surface fastener according to any one of claims 1 to 8, wherein a protrusion rising from the back surface of the substrate and having a height of 0.5 to 5 times the thickness of the substrate is present on the back surface side of the substrate.
The male molded surface fastener according to any one of claims 1 to 9, wherein the resin constituting the male molded surface fastener is a semi-aromatic polyamide.
The male molding according to claim 10, wherein the semi-aromatic polyamide is a semi-aromatic polyamide obtained by containing 1,9-nonanediamine and 2-methyl-1,8-octanediamine as diamine components and terephthalic acid as a dicarboxylic acid component. Hook-and-loop fastener.
An automobile interior material to which the back surface of the male molded surface fastener according to any one of claims 1 to 11 is attached to the back surface of the automobile interior material with an adhesive.
The automobile interior material according to claim 12, wherein the adhesive is an ethyl cyanoacrylate-based instant adhesive.
By engaging the male engaging element of the male molded surface fastener attached to the back surface of the automobile interior material according to claim 12 or 13, and the loop-shaped engaging element of the loop surface fastener attached to the vehicle body. , The car body to which the interior materials for automobiles are fixed.