JPS59163454A - Production of high pile warp knitted article - Google Patents

Abstract

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

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a method for producing a high-thread warp knitted fabric. More specifically, the present invention relates to a special high coil warp knitted fabric knitted by a warp knitting machine suitable for car mats used as automobile interior materials, door trims, carpets for general interiors, hot carpets for heat insulation, etc. Relating to a manufacturing method.

BACKGROUND OF THE INVENTION Conventionally, in the above-mentioned product fields, tufted carpets produced by tufting machines have been the mainstream. However, since tufted carpet requires a primary base fabric, it is very heavy.
It has a high elongation tendency as a fabric, and has problems in processing performance due to tufted loops.9 It cannot be said that the fabric has the performance that should fully satisfy consumers.

In order to eliminate the drawbacks of the conventional tufted carpet, the inventors of the present invention have worked diligently to overcome the drawbacks of the tufted carpet by knitting a special knot structure using a warp knitting machine. We discovered a method for obtaining a pile structure and arrived at the present invention.

On the other hand, it is conventionally known that pile fabrics are manufactured using a warp knitting machine. Conventional pile knitting by this machine is lining/
J? There are piles, circular nosails, and cut piles. The lining/yaile is made by raising the back side of the knitted fabric after knitting to create a pile shape, or by reducing the tension of the fleece reed as much as possible during knitting and loosening the fleece yarn to create a pile shape. It is. Therefore, with fleece pile, the loop length of the pile was very short, making it difficult to adjust the tension, and it was necessary to use thick fleece yarn. Circular piles cannot be knitted without the use of loop drawing devices or point needles. Therefore,
It cannot be knitted with a normal warp knitting machine that is not equipped with such special equipment. In the case of cutting... either, it is manufactured using knife needles, or the pile yarn is knitted on both the front and rear needle beds of a two-row needle bed warp knitting machine and the pile yarn is cut in the center of both needle beds. and manufacture it. Therefore, cut pile cannot be knitted using a normal warp knitting machine.

OBJECTS OF THE INVENTION An object of the invention is to have a pile of desired length.
To provide a manufacturing method for knitting a double warp knitted fabric using a warp knitting machine without using any special equipment.

According to the method of the present invention, when knitting a warp knitted fabric having piles using a warp knitting machine having a row needle bed, the ground yarns forming the ground knitted fabric are spaced at least two stitches apart. As a result, a thin part extending in the wale direction is formed in the ground knitted fabric. The yarn for the pile is connected to the ground knitted fabric by insertion or knitting, and at least two needles of the ground yarn are supplied at an interval of at least one course so as to overlap the knitting needles to form a high pile. That is, the method of the present invention is characterized in that one loop pile is formed with knitting needles that do not knit at least two needles of ground yarn, and when one loop pile is formed with knitting needles that do not knit one needle of ground yarn. The supply of Nikurabe pile yarn is large, and as a result, the pile is high and a product with excellent volume can be obtained. In order to form one loop/pile with knitting needles that do not fully knit the ground threads of at least two buttons, the ground threads that form the ground knitted fabric must be knitted with an interval of at least two stitches, and two or more stitches must be knitted. In that case, it doesn't matter how many stitches. However, if the interval is too large, the wrapping motion of the reed must be increased by VE, which reduces the number of rotations of the knitting machine and increases problems such as yarn breakage.

In the present invention, the interval is preferably from 2 stitches to 4 stitches,
It is preferable to knit the ground yarns at intervals of 2 to 4 stitches to form a ground knitted fabric. /? It is not necessary to form one loop pile with all the knitting needles that do not knit the base yarn.
1 on at least 2 of these knitting needles that do not knit ground yarns.
Just form one loop pile. For example, use 4 ground threads.
It is assumed that a ground knitted fabric is formed by knitting with needles spaced apart. In this case, the knitting needles tend to not knit the ground yarn of 4 needles in the thin part of the ground knitted fabric9, and all 4 of the knitting needles may form one loop pile, and 3 of the knitting needles may form one loop pile. A loop pile may be formed, or two needles may form one loop pile. Also, when forming one loop pile with 3 stitches, even if 3 stitches are used except for the 1st stitch on the left side, the 1st stitch on the right side
There may be three stitches excluding the needle, but it is impossible to exclude the second stitch from the left or the second stitch from the right due to the knitting mechanism of the warp knitting machine.

If you want to form one loop pile with 3 stitches excluding the 2nd stitch from the left or the 2nd stitch from the right, you can remove the needle you want to remove from the needle bed in advance. It is no different from forming two loop piles. Furthermore, when forming one loop/yaile with two hooks, the two adjacent stitches should be two stitches from the left.

There are 3 choices: 2 needles in the center, 2 needles from the right, and 3 choices when removing the needles from the needle bed in advance.

The combination of these needles used to form the loop pile can be selected as appropriate depending on the desired form of the pile surface.
The point is that by forming one loop pile with two or more needles, it is possible to obtain a seaweed pile fabric with a long loop pile.

When knitting a loop twine, a conventional sinker may be used to knit the so-called 2 stitches or 3 stitches at one end.

However, in this case, a strong force is applied to the sinker and the knitting needle at the time of knockover, which may cause damage to the knitting needle or bending of the sinker during high-speed operation. In order to overcome this drawback, a special sinker may be used, for example, a special sinker in which the sinker plate that acts between knitting needles that do not open the ground yarn in the thin part of one ground knitted fabric is removed. If you use this special sinker, even if you supply yarn to two, three, or more knitting needles and overlap them, the force applied to the knitting needles during knockover will be small, and even if you operate at high speeds, the needles and sinkers will not be damaged. There's nothing to do.

In the present invention, the yarn type used may be natural fibers, synthetic fibers, or recycled fibers.

In addition, the yarn form can be spun yarn, bulky processed long fiber yarn,
It may be a long fiber yarn that has not been subjected to bulk processing. There are no particular restrictions on the yarn type or yarn form. There is no restriction on the thickness of the pile yarn used in the present invention, but considering the product fields such as carpets and car mats, it is preferably 800 denier or more.

Furthermore, there is no restriction on the thickness of the ground thread.

In the present invention, the panel yarn may be connected to the ground knitted fabric by either knitting or insertion, but if the pile formed by the moyle yarn remains in a loop shape, connection by insertion is preferable.
The effective pile utilization rate of flat pile yarn is close to 100 piles. Furthermore, when cutting the tip of the loop pile with a knife or the like to form a cut pile, it is preferable to connect it by knitting to prevent the pile from coming off.

The present invention will now be described in detail with reference to the accompanying drawings.

FIG. 1 is a diagram showing the organization chart, threading state, and chain link combinations of a high pile warp knitted fabric in one embodiment of the present invention. The ground yarns 11 and 12 constituting the ground knitted fabric are passed through the front reed Bl and the middle reed B2 in a 1-in, 2-out state, respectively, while forming a loop pile.
3 is threaded into the rear reed B3 in a 1-in, 2-out state.

For the sake of explanation, the knitting needles arranged in the first row of needle beds are marked with symbols a and l).

Knitting needle a is used to knit the base yarns 11 and 12, and knitting needle A is used to form a loop/zoil with the pile yarn 13.

The ground yarn 11 is fed to the knitting needle a, and the wrapping of ■-■/■-■ is repeated to knit a chain stitch (the chain link shown on the right side of Fig. 1 shows the case of 3 tempo). .

The ground yarn 12 is also supplied to the knitting needle a and ■-■/■-
■It is knitted while forming the thin part of the ground knitted fabric. Each course will be explained below.

In the (1)th course, the base yarns 11 and 12 overlap the knitting needle a. At this time, the pile yarn 13 idle swings with respect to the knitting needle a, and is inserted to connect the pile yarn to the ground knitted fabric (■-■).

In the (2) course, the pile yarn 13 overlaps the two adjacent knitting needles seven times, and after the completion of the (2) course knitting, the pile yarn 13 is held in the hooks of the two knitting needles (■ −■).

In the (3) course, the pile yarn 13 idle swings with respect to the knitting needle a, and is inserted to connect the pile yarn to the ground knitted fabric (■-■). In the third course, the pile yarn 13 held in the hooks of the two knitting needles is released from the hooks and forms a loop/gill 14.

In the (4) course, the pile yarn 13 again overlaps the two knitting needles used in the (2) course, and
) For the following courses, repeat the steps (1) to (4).

The sinker used at this time is 2 as shown in Figures 2 and 3.
There is no sinker plate between the knitting needles for loop pile formation, and there is no cutting of the loop pile yarn or damage to the knitting needles during loop pile knitting.

Although FIG. 1 shows an example in which a loop pile is formed using two knitting needles b, a loop pile may be formed using three or more knitting needles as shown in FIG. 4. Furthermore, although an example has been shown in which loop piles 14 are formed every other course, this may be changed as appropriate depending on the desired loop pile shape, and as shown in FIG. However, a loop pile may be formed. FIG. 6 shows an example of a knitting structure in which two adjacent knitting needles among four knitting needles that do not knit the ground yarn form one loop pile. Furthermore, for the Jigumi 1 cord weave, you can select as appropriate, such as 2-ply reed, 3-ply reed, or 9 normal tricot weave.

An experimental example of the knitting method according to the present invention will be shown below.

A warp knitting machine having a one-row needle bed and a number of needles of 12/inch was used to knit the knitting structure shown in FIG. 1. At this time, using the sinker shown in Fig. 2, use a 200d/60f thread for ground threads 11 and 12, and a thread of 44 Hz for 3'.
Using nylon bulky processed yarn of 1800d/i'2of, set the runner length of base yarn 11 to 2400m/rack, the runner length of base yarn 12 to 4100+zi/the runner length f of long glossy yarn 13, and set the driving density to 4200rran/rack. 8.5 courses/cm. The obtained pile warp knitted fabric has a high pile of 6.5 threads on the surface, and is an extremely high quality high pile warp knitted fabric with a rich sense of volume.

Effects of the Invention The high-gile warp knitted fabric obtained by the manufacturing method of the present invention is dimensionally stable because the ground knitted fabric performs the same function as the primary base fabric, even without the use of a primary base fabric like tufted carpets. It has good elasticity and has a very long-lasting pile shoulder. In addition, since it is basically constructed entirely of a warp-knitted loop structure, it has excellent elongation recovery, which is a characteristic of knits, and has a flexible function when used in automobile interior materials that require three-dimensionality, such as car mats and door trims. The molding performance is greatly improved.

In addition, since the pile is held within the loop of the knitted fabric, there is no possibility of the pile being pulled out by external force.

Therefore, the phenomenon of pile removal during the dyeing process is completely eliminated, and the productivity in the dyeing process is dramatically improved.

In addition, in the high pile warp knitted fabric obtained by the manufacturing method of the present invention,
Since a single loop pile is formed with the continuous needles without knitting at least two ground yarns, the pile becomes high and a high pile warp knitted fabric with excellent volume can be obtained. By changing the number of knitting needles that do not knit the ground yarn with which one loop pile is formed, the height of the pile can be changed as desired, resulting in high pile warp knitting with a pile length that meets demand. You can get land.

[Brief explanation of the drawing]

Figures 1, 4, and 5 are diagrams showing examples of the knitting structure of the double-pile warp knitted fabric of the present invention, Figure 2 is a plan view of the special sinker used in the present invention, and Figure 3 is a Figure 2 is an overhead view of the sinker, and Figure 6 is a diagram showing an example of the knitting structure of the high pile warp knitted fabric of the present invention having loop piles formed using the special sinker of the present invention. a...Knitting needle for forming ground knitted fabric, b...Knitting needle for forming loop pile, (1) to (6)...Course display, ■ to [phase]
... Chi, Aen link number, 11.12... ground thread,
13...Pile thread, 14...Loop no gill. Patent Applicant: Asahi Kasei Kogyo Co., Ltd. Patent Attorney Akira Aoki Patent Attorney Kazuyuki Nishidate Patent Attorney Akira Yamaguchi 1111111111 obbabbabba [Phase] ■■■■■■■■■

Claims (1)

[Claims] 1. - When knitting a warp knitted fabric with a high pile using a warp knitting machine with a row needle bed, the ground yarns forming the ground knitted fabric are knitted with a spacing of at least two needles, thereby The knitted fabric has a thin part extending in the wale direction, and the pile yarn is connected to the ground knitted fabric by insertion or knitting, and is knitted with at least two needles with an interval of at least one course. A method for producing a high pile warp knitted fabric, characterized in that the material is fed overlapping knitting needles to form a high pile.