JP2002253305A - Loop material for surface fastener and its knitting method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a loop material for a surface fastener which is easily hooked and exhibits a high fastening strength. SOLUTION: The loop material has a grand chain stitch consisting of multiple chain stitches (B, E, H) running in parallel with the warp direction. A number of pile loops formed in a loop shape with both of their yarn ends fixed to each of the chain stitch are formed by pulling out the yarns from each of the chain stitch to the left and right alternately in the weft direction. Loop piles formed on the two mutually adjacent chain stitches are connected with mutually facing pile loops and also connected in the form of a chain along the loop chain. Mutually facing pile loops support each other in a standing attitude because they are connected with each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a female member forming a loop of a hook-and-loop fastener, and more particularly to a female member of a hook-and-loop fastener and a knitting method thereof.

[0002]

2. Description of the Related Art FIG. 4 is a point diagram schematically and partially showing the driving of a guide bar when knitting a pile fabric constituting a conventional hook-and-loop fastener female material by a Raschel knitting machine. Here, for convenience of explanation, the state of the conventional pile fabric knitting will be described by partially showing the ground chain stitches with four rows (four rows) of chain stitches. Alphabet letters A to H shown in the figure indicate rows of knitting needles mounted on the needle bed. The numbers 1 to 8 are
The stitches are shown. The warp drawn out from each bobbin (not shown) is supplied to each knitting needle by a guide bar (not shown). The guide bar forms a pile loop with a guide bar (hereinafter, referred to as a first guide bar) that moves so as to supply the warp only to each of the knitting needles A, C, E, and G forming the grand chain stitch. And a guide bar that moves in the weft direction (hereinafter referred to as a second guide bar).

The first guide bar supplies a warp to each of the knitting needles A, C, E and G, and the warp is knitted in a chain stitch by the knitting needles A, C, E and G. The first guide bar always supplies a warp to the same needle.

The second guide bar moves so as to form a pile loop, and the knitting needles A, C, E, and G, B, D, and
While moving between the knitting needles F and H, a yarn is hung on these needles. For example, after the yarn is wound around the needle A in the first stage, the yarn is wound in the second stage with the needle D (ie, the needle beyond one of the needles C forming the chain stitch next to the chain stitch formed by the needle A). Pull to the position D) and wind the thread around the needle D. Further, at the third stage, the thread returns to the position of the needle A again and winds the thread around the needle A. Since the needle A forms a chain stitch with the thread supplied by the first guide bar,
The yarn supplied to the needle A by the second guide bar is fastened to this chain stitch (at the first and third stages),
Since the needle D wound in the step does not form a chain stitch at that position, this thread becomes a free end after the needle D comes off. That is, the needle A,
The yarn supplied to the needle D and the needle A in order forms a pile loop having both ends fastened to the first and third stages. First
The yarn having both ends fastened to the step and the third step to form a pile loop further forms a pile loop having both ends fastened to the third and fifth steps, and the pile loop is successively successively arranged in the warp direction. Is formed.

Similarly, another second guide bar, for example, winds a thread around the needle C in the first stage, and then passes the thread to the needle F in the second stage.
And wind the thread around the needle F. In the third stage, the thread returns to the position of the needle C, winds the thread around the needle C, and the needle F comes off the thread. In this way, the yarns sequentially supplied to the needle C, the needle F, and the needle C by the second guide bar form a pile loop having both ends fastened to the first and third stages, and further to the third and fifth stages. The pile loops are formed successively in the longitudinal direction, such as a pile loop having both ends fastened to each other, and a pile loop having both ends fastened to the fifth and seventh stages.

[0006] Similar chain stitches have needles A, C, E,
G is formed continuously and parallel in the warp direction, and a pile loop is formed in the same weft direction from the position of the same step of each chain stitch, thereby knitting the pile cloth developed in a plane.

When the conventional pile material formed as described above is used as a female member of a hook-and-loop fastener, as shown in FIG. 5, each of the pile materials formed along the adjacent chain stitches A, C, E, and G is used. Each row of pile loops is formed in the same weft direction.
As shown in (1), although it is slightly upright, it falls down almost in the same direction as if stroked, so that the hook as a male member of the hook-and-loop fastener is hardly caught when pressed. FIG. 5 is a diagram showing the shape of each pile loop as viewed in plan, and FIG. 6 is a diagram showing FIG. 5 as viewed in the direction of arrow X. In FIG. 5, each chain stitch A,
C, E, and G are schematically represented by extremely thick straight lines.

Further, in the conventional pile fabric formed as described above, individual pile loops are formed continuously in the longitudinal direction along the chain stitch of each strip, and adjacent loops are independent of each other. It is formed. When the hook of the hook-and-loop fastener is hooked on the pile loop formed in this manner, the peeling resistance generated between the hooks is supported by the individual loops independently. That is, the peeling resistance between adjacent loops does not cooperate with each other and is not dispersed, and the resistance to peeling that supports each loop is not so large. Since the adhesive strength of the hook-and-loop fastener is the sum of the peeling resistance between each hook and the loop, the adhesive strength of the hook-and-loop fastener itself is not so large.

As described above, in the conventional pile cloth, the pile loops are generally inclined in the same direction as described above. However, each of the pile loops is formed so that the hook as a male member of the hook-and-loop fastener is easily caught when pressed. Some pile loops stand almost upright. However, when viewed from above, that is, when viewed from the direction in which the hook of the hook-and-loop fastener is pressed, the upright pile loop has a larger surface area (the shape of each loop) than the case where the pile loop has fallen. Is projected downward, the area of the shape) becomes smaller,
The area of the area where the male hook can be hooked (the area where the pile exists when the hook comes down) becomes small. As a result, the number of hooks hooked on the pile in a unit area is reduced, and the adhesive strength is reduced.

Even when each pile loop is relatively upright, the inclination of each pile loop is all in the same direction, and when the hook of the hook-and-loop fastener is pressed, all the pile loops are in the same direction. Since the hook-and-loop fastener is attached to the male member, the male member may be shifted in a direction in which the pile loop falls from a position where the male member is intended to be attached.

[0011]

SUMMARY OF THE INVENTION The object of the present invention is to provide a female hook-and-loop fastener which can be easily hooked and has a strong adhesive force as compared with the conventional female hook-and-loop fastener as described above. It is.

[0012]

The female surface fastener according to the present invention has the following characteristic structure in order to achieve the above-mentioned object. That is, a ground chain stitch consisting of a number of chain stitches parallel to each other in the warp direction is provided, and a pile loop formed by fixing both ends of the yarn to the chain stitch of each line in a loop shape is formed from each chain stitch. Left and right are drawn alternately in the weft direction. Further, the pile loops formed on the two adjacent chain stitches are connected to the pile loops facing each other, are connected in a chain along the chain stitches, and face each other. Preferably, the mated pile loops are supported so that they are connected to each other and stand upright.

The method for knitting a female surface fastener according to the present invention is a knitting method using a Raschel knitting machine. On a needle bed of a Raschel knitting machine, a plurality of knitting needles are arranged in a row at substantially equal intervals, and the knitting needles are arranged between every two first needles and two between the first knitting needles. The second knitting needle is used. A first warp is supplied to the first knitting needle by a first warp supply means, and is turned into a chain stitch. A second warp is supplied by a second warp supply means, and is fixed to the chain stitch. Then, after the second warp supplied by the second warp supply means is temporarily hooked and held on the second knitting needle,
The second knitting needle is removed from the warp to form a pile loop.

In the above method, the second warp supplying means moves in the weft direction each time the knitting advances by one stitch of the chain stitch, and the second knitting needle moves the second knitting needle to the first knitting needle.
After supplying the warp yarn, the second warp yarn is supplied to a second knitting needle arranged next to one side of the first knitting needle arranged next to the first knitting needle, and further to the original first knitting needle. Returning the first knitting needle to the second knitting thread, thereby fastening the first knitting needle to a chain stitch formed by the first knitting needle to form a first pile loop on one side of the chain stitch. Further, following the first step, the second warp supply means may further include a second knitting needle disposed next to one of the first knitting needles disposed in front of the first knitting needle. 2 Warp yarns are supplied, and the first
Returning the knitting needle to supply the second warp yarn to the first knitting needle, thereby fastening the chain stitch formed by the first knitting needle to form a second pile loop on the other side of the chain stitch By performing these two steps, the first pile loop and the second pile loop facing each other and formed by being fastened to two adjacent chain stitches, respectively, are connected in a chain. Is preferred.

[0015]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a point diagram schematically and partially showing the drive of a guide bar when knitting a pile material constituting a female surface fastener according to the present invention with a Raschel knitting machine. In the prior art, knitting needles forming a ground chain stitch and knitting needles for hooking and pulling a thread to form a pile loop were alternately arranged one by one in a row. A characteristic feature is that two rows of knitting needles are provided between the knitting needles for hooking and pulling out a yarn to form a pile loop. Here, for convenience of explanation, the state of pile fabric knitting will be described by partially showing the ground chain stitches with three rows (three rows) of chain stitches. Alphabet letters A to I shown in the figure represent rows of knitting needles attached to the needle bed,
Numbers 1 to 6 indicate stitches.

The warp drawn from each bobbin (not shown) is supplied to each knitting needle by a guide bar (not shown). The guide bar moves so as to supply the warp only to each of the knitting needles B, E, and H forming the grand chain stitch (hereinafter, referred to as a first guide bar).
And a guide bar that moves in the weft direction so as to form a pile loop (hereinafter, referred to as a second guide bar).

The first guide bar supplies a warp to the knitting needles B, E, and H, and the warp is knitted into a chain stitch by the knitting needles B, E, and H. The first guide bar always supplies a warp to the same needle. Hereinafter, the chain stitches formed by the needles will be referred to as chain stitches B, E, and H with the same reference numerals as those needles.

The second guide bar hangs a yarn on each of the knitting needles while moving between the knitting needles so as to form a pile loop. Specifically, after the yarn is wound around the needle E in the first stage, the yarn is wound in the second stage with the needle A (that is, one of the needles B forming the chain stitch B adjacent to the left of the chain stitch E). Pull to the position of the needle A) and wind the thread around the needle A. Further, in the third stage, the thread returns to the position of the needle E again and winds the thread around the needle E. Since the needle E forms the chain stitch E with the thread supplied by the first guide bar, the thread supplied to the needle E by the second guide bar is fastened to the chain stitch E (first and second stages). However, since the needle A wound in the second step does not form a chain stitch at that position, the thread is free after the needle A comes off. That is, the yarns sequentially supplied to the needle E, the needle A, and the needle E by the second guide bar form a pile loop having both ends fastened to the first and third stages of the chain stitch E. The yarn having both ends fastened to the first and third stages to form a pile loop further forms a pile loop having both ends fastened to the third and fifth stages,
A pile loop is formed continuously in the longitudinal direction along the chain stitch E.

Further, the second guide bar, in which the thread is wound around the needle E in the second stage, applies the thread to the needle I (that is, the needle H forming the chain stitch H to the right of the chain stitch E) in the third stage. And pull it over to needle I)
Wind the thread around needle I. Further, at the fourth stage, the thread returns to the position of the needle E again and winds the thread around the needle E. Since the needle E forms the chain stitch E with the thread supplied by the first guide bar, the thread supplied to the needle E by the second guide bar is fastened to this chain stitch E (second stage and second stage). 4 steps)
However, since the needle I wound in the third step does not form a chain stitch at that position, this thread becomes a free end after the needle I comes off. That is, the yarns sequentially supplied to the needle E, the needle I, and the needle E by the second guide bar form a pile loop having both ends fastened to the second and fourth stages of the chain stitch E. The yarn having both ends fastened to the second and fourth stages to form a pile loop further forms a pile loop having both ends fastened to the fourth and sixth stages, and runs along the chain stitch E. A pile loop is formed continuously in the direction.

As described above, the yarn wound around the needle E by the second guide bar is such that the yarn fastened to the odd-numbered steps of the chain stitch E and the yarn fastened to the even-numbered steps of the chain stitch E alternately to the left and right. It has been drawn out.
This is not fully illustrated in the figures for the sake of simplicity, but the chain stitch B formed by the needles B and H
The same is true for H and H, and for still another chain stitch not shown. Although an actual knitting has an insertion thread for connecting each chain stitch, it is not shown because it does not relate to the content of the present invention.

And, for example, the second of the chain stitch B
A pile loop (extended to the right in the figure) with both ends fastened to the step and the fourth step, and a pile loop (left in the figure) with both ends fastened to the third and fifth steps of the chain stitch E Are connected to each other in the form of a chain. In this way, the pile loops that are drawn out to the chain stitch side of each other between the adjacent chain stitches are connected to each other in a chain shape as shown in FIG. 2, and therefore, as shown in FIG. The pile loops are standing up in support of each other's fall. FIG. 2 is a diagram showing a plan view of the shape of each pile loop, and FIG.
FIG. In FIG. 2, each chain stitch B, E, H is schematically represented by a very thick straight line.

In the thus-constructed female material of the hook-and-loop fastener, the adjacent pile loops are intertwined in a chain, and the intertwined pile loops stand up so as to mutually support the fall of the opponent. Therefore, when the hook of the hook-and-loop fastener material is pressed against the pile loop of the hook-and-loop fastener female material, the tip of the hook easily enters the loop, and the hook and the loop are securely caught.

When the female member and the male member of the hook-and-loop fastener are to be peeled while the hook and the loop are engaged with each other, one hook hooked on one loop is pulled from the loop. The peeling force is also shared by the neighboring loops that are entangled in the loop, and a large number of tangled loops exhibit strong peeling resistance (that is, adhesion) against the peeling force. be able to.

As described above, the adjacent pile loops are preferably intertwined in a chain. However, even if each of the pile loops is used alone, it is necessary that the adjacent loops support each other's fall. , And the hook can be securely hooked on the loop.

[Brief description of the drawings]

FIG. 1 is a point diagram schematically and partially showing the drive of a guide bar when knitting a pile material constituting a female surface fastener material according to the present invention with a Raschel knitting machine.

FIG. 2 is a plan view showing the shape of each pile loop of the female surface fastener material according to the present invention.

FIG. 3 is a diagram showing FIG. 2 as viewed in the direction of arrow X;

FIG. 4 is a point diagram schematically and partially showing the drive of a guide bar when knitting a pile material constituting a conventional hook-and-loop fastener female material with a Raschel knitting machine.

FIG. 5 is a diagram showing a plan view of the shape of each pile loop of a conventional surface fastener female member.

FIG. 6 is a diagram showing FIG. 5 as viewed in the direction of arrow X.

Claims (4)

[Claims] 1. A chain loop comprising a plurality of chain stitches parallel to each other in a warp direction, and a pile loop formed by fixing both ends of a yarn to the chain stitches of each line in a loop shape. A hook-and-loop fastener female material that is drawn out alternately from left to right in the weft direction. 2. The hook-and-loop fastener female material according to claim 1, wherein
The pile loops formed on the two adjacent chain stitches are connected to the pile loops facing each other and are connected in a chain along the chain stitches, and the pile loops face each other. A hook-and-loop fastener female material characterized in that pile loops support each other by being connected to each other so as to stand upright. 3. A method for knitting a surface fanner female material using a Raschel knitting machine, comprising a plurality of knitting needles arranged in a row at substantially equal intervals on a needle bed, and the knitting needles being arranged at intervals of two. A first knitting needle and two second knitting needles arranged between the first knitting needles; a first warp is supplied to the first knitting needle by a first warp supply means to form a chain stitch; and a second warp supply means is provided. The second warp supplied by the second warp supply means is once hooked and held on the second knitting needle, and then the second knitting needle is supplied from the second warp to the second knitting needle. A knitting method for a female hook-and-loop fastener material, wherein a pile loop is formed by pulling out a loop. 4. The second warp supplying means moves in the weft direction each time the knitting advances by one stitch of the chain stitch, and supplies the second warp to the first knitting needle. The second warp is supplied to a second knitting needle disposed next to one side of the first knitting needle disposed next to the knitting needle, and the second knitting needle is returned to the original first knitting needle, and the second knitting needle is supplied to the second knitting needle. A first step of forming a first pile loop on one side of the chain stitch by being fastened to a chain stitch formed by the first knitting needle by supplying a warp; Following the first step, the second knitting needle disposed next to one of the first knitting needles disposed in front of the first knitting needle, and
By supplying the warp, and further returning to the original first knitting needle and supplying the second knitting to the first knitting needle, it is fastened to the chain stitch formed by the first knitting needle, and the other side of the chain stitch is The second forming the second pile loop
4. The method according to claim 3, further comprising a step of connecting the first pile loop and the second pile loop, which are formed by being fastened to two adjacent chain stitches and face each other, in a chain.
A method for knitting the hook-and-loop fastener female material described in the above.