JP2003027359A - Method for producing slat for vertical blind - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a warp knit slat for a vertical blind without a twist or bend by knitting a wide warp knitted fabric so as to be separated to multiple rows of slats and separating by arranging it in parallel to the arrangement of stitches forming a line in the wale direction. SOLUTION: In this process for knitting multiple slat textures 11, 11 for the vertical blind at the same time by arranging them in parallel in their longitudinal direction, the method is provided by arranging a linking knit yarn 24 between the slat texture 11 and the slat texture 11 forming lines as adjacent in parallel, knitting the linking knit yarn 24 in the adjacent slat textures 11, 11 for linking the adjacent slat textures 11, 11 via the linking knit yarn 24, knitting the multiple slat textures 11, 11 as one piece knitted fabric, setting the shape of the knitted fabric by imparting a binder or heating, then breaking the linking knit yarns by straining, and separating the one piece warp knitted fabric into the multiple slats 20.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to warp knitted slats used for vertical blinds.

[0002]

BACKGROUND OF THE INVENTION Slats, whether for vertical (vertical) blinds or for venetian (horizontal) blinds, have been made of sheet steel. However, since the steel plate slat gives a hard and cold impression due to its material, recently, a fiber slat that gives a soft and mild impression has been used. For the fiber slats, any fabric such as woven fabric, knitted fabric, and non-woven fabric can be used.

However, in the fiber slats, unlike the steel plate slats, the tension applied in the manufacturing process.
Is accumulated inside the fiber as latent stress, which manifests itself during use and causes the fiber to expand and contract, which tends to cause twisting or warping of the slat. Therefore, the cloth, which is the material of the fiber slats, is impregnated with a binder resin to bond the fibers, or the front and back of the cloth are covered with a resin film for reinforcement,
A setting process for fixing the shape of the cloth is performed, for example, by heating and setting the cloth using a thermoplastic synthetic fiber (particularly polyester fiber).

Among the fabrics, the warp knitted fabric forms a stitch in which the knitting yarn is bent in a ring shape, and even if the latent stress accumulated in the knitting yarn is manifested, the stretching stress caused by the latent stress is dispersed in all directions. However, it does not act in a specific direction such as the length direction or the width direction of the slat, and is less likely to be twisted or warped as compared with a woven fabric or a non-woven fabric, and thus is most suitable for the slat.

[0005]

The warp knitted fabric for slats is knitted in a tape shape in accordance with the width of the slats and a narrow warp knitted fabric so that it can be cut and divided into a plurality of slats. There is a wide warp knitted fabric. In the narrow warp knitted fabric, the left and right side edges are bound by the selvage, which makes it difficult to understand, and the side edges feel good, but because of the small width, the production efficiency is low compared to the wide warp knitted fabric, and the binder is used. When applying or heating to set the shape, it is difficult to apply a uniform tension, and due to the variation in the tension, twisting or warping is likely to occur during use as a slat.

The wide-width warp knitted fabric can be knitted more efficiently than the narrow-width warp knitted fabric, and has an advantage in that tension can be applied uniformly during setting. However, in order to prevent loosening at the side edge, an ultrasonic cutter that can fuse the cutting edge at the same time as the cutting is used for cutting, and the fibers are fused at the cutting edge and the side edge of the steel plate slat is cut. It has sharp side edges as well as, and its structure gives a hard impression.

On the warp knitting machine, although the stitches are aligned along the course direction and the wale direction, the warp knitted fabric removed from the warp knitting machine is set by applying a binder or heating. However, the arrangement of the stitches is rarely aligned straight along the course direction and the wale direction, and becomes a slanted or curved shape with respect to the side edges cut straight, which may cause twisting or warping of the slat. Become.

[0008]

SUMMARY OF THE INVENTION Therefore, according to the present invention, a wide warp knitted fabric is knitted so that it can be divided into a plurality of slats, and the knitted fabric is divided in parallel with the arrangement of the stitches arranged in the wale direction so that there is no twist or warp. The objective is to efficiently obtain warp knitted slats for blinds. Another object of the present invention is to provide a side edge of a warp knit slat obtained by dividing a wide warp knitted fabric into a plurality of threads,
It is to be soft and comfortable like the side edges of a narrow warp knitted fabric bound with selvage.

[0009]

According to the present invention, (a) in the process of arranging a plurality of vertical blind slat cloths 11 in parallel in the longitudinal direction and knitting them at the same time,
Slat cloth 11 and slat cloth 1 that are next to each other in parallel
The connecting knitting yarn 24 is arranged between the two, and (b) the connecting knitting yarn 24 is knitted into the adjacent slat material 11 and the slat material 11 and locked to the knitting yarn of each slat material 11, c) Plural slat cloths 11 are formed by connecting adjacent slat cloths 11 and 11 via the connecting knitting yarn 24.
・ 11 is knitted as one warp knitted fabric, and (d) the shape of the warp knitted fabric is set by applying a binder or heating.
(E) Then, the connecting knitting yarn 24 is tensioned and broken,
The first feature is that the one warp knitted fabric is divided into a plurality of slats 20.

A second feature of the present invention is that, in addition to the above first feature, (f) the connecting knitting yarn 24 and the connecting knitting yarn 2 are
4 is to use a yarn having a lower tensile strength than the knitting yarn of the slat material 11 that locks No.

A third feature of the present invention is that, in addition to the above first or second feature, (g) the connecting knitting yarn 24 is
(H) The knitting yarn 24 for connection is used together with other knitting yarns 21, 22, 23, 25 and the adjacent slat material 1
1 and the slat cloth 11 and (i) the connecting knitting yarn 24 and the other knitting yarns 21, 22, 23, and 25 are used to connect the connecting knitted fabric 12 to the adjacent slat cloth 11 and slat cloth 11. (J) Two or more knitting yarns 24 for connection are knitted in between, and the adjacent slat cloth 11 and slat cloth 11
And knitting separately to connect the connecting knitted fabric 12 and the slat fabric 11, and (k) connect the adjacent slat fabrics 11 and 11 via the connecting knitted fabric 12.

A fourth feature of the present invention is, in addition to the thirteenth feature, a slat cloth 11 for locking the connecting knitting yarn 24.
The number of knitting yarns of the connecting knitting fabric 1 for locking the connecting knitting yarn 24
The number of knitting yarns is less than 2.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION The warp knitted fabric can be dyed after knitting and subjected to flameproofing treatment, deodorizing treatment, antibacterial treatment, antistatic treatment and the like to impart required functionality. The shape of the warp knitted fabric (structure of knitting and knitting structure) is set by utilizing the adhesiveness of the functional agent imparted in the post-processing, or by the binder resin imparted together with the functional agent
Alternatively, the heat treatment accompanying the post-processing can also be performed. However, when heating and setting the structure of the stitch or knitting structure at the end, the warp knitted fabric is unwound, that is, the latent stress accumulated inside the fiber is passed through a tumbler before that. A pretreatment is carried out to reveal and diverge.

For the knitting yarn, a thermoplastic synthetic fiber capable of heat setting, particularly a polyester fiber excellent in strength is used.
Since the connecting knitting yarn 24 is to be removed, it is not necessary to set the stitch, and the warp knitted fabric is divided between the adjacent slat fabrics 11 by slicing the stitches. A yarn having a lower tensile strength than the knitting yarn (hereinafter referred to as a slat knitting yarn) forming the slat material 11 is used for the connecting knitting yarn 24. Therefore, a rayon fiber having no heat setting property may be used for the connecting knitting yarn 24. When the polyester fiber is used for the knitting yarn of the slat cloth 11, the connecting knitting yarn 24 should be finer than the knitting yarn. Good.

The number of connecting knitting yarns 24 arranged between the slat cloths 11 and 11 may be one or plural. In the case of using a plurality of connecting knitting yarns, the different connecting knitting yarns may be divided into left and right parts, and may be knitted so as to be caught and locked by the chain stitch rows 13 of the separate slat fabrics adjacent to each other on the left and right sides.
More preferably, the plurality of connecting knitted fabrics 24, 24
However, an extremely thin connecting knitted fabric 12 is knitted between the adjacent slat materials 11. When the knitted fabric 12 for connection is knitted in this manner, a plurality of slats of cloth 11
In the state where one warp knitted fabric in which 11 is connected to the connecting knitting yarn 24 is wound up in a roll shape, the connecting knitted fabric 12
By pulling the end of the above, the slat material 11 is divided into a plurality of slats in a rolled state, and the slat 20 obtained by dividing the slat 20 is not required to be rolled one by one. Since the warp knitted fabric wound in a roll is not bulky, the dividing work can be efficiently performed even in a small work space.

[0016]

SPECIFIC EXAMPLE FIG. 1 shows a chain stitch sequence 13 in which a reciprocating motion is introduced into the first reed of [0022] and continues straight in the wale direction 19.
The first knitting yarn 21 forming the second knitting yarn 21 and the second knitting yarn 22 introduced into the second reed of [0660] to connect the chain stitch rows 13 and 13 and the reciprocating

The third knitting yarn 2 introduced into the third reed of [0000] every other row of the chain stitch row 13 and continuing in a straight line (parallel) in the wale direction without forming stitches.
3 and the slat cloth 11 and the slat cloth 11 adjacent to each other in the warp knitted fabric formed by introducing the reciprocating movement into the fifth reed of the [0440] and knitting by the fifth knitting yarn 25 connecting the chain stitch rows 13 and 13 described above. The connecting point with is shown. Numbers 0-8 in the figure
Is the position of the gap between the needles of the warp knitting machine, and the position of the reeds passage through which the reeds for guiding the knitting yarn introduced into the reed (the guide hole for inserting the knitting yarn) can move and pass. Indicates.

The needle gauge of the warp knitting machine for knitting the warp knitted fabric shown in FIG. 1 is set to 18 wales / inch, and the stitch gauge at the time of knitting is set to 36 courses / inch. The number of wales of the slat cloth 11 is 18 (wale), and the connecting portion 12 between the adjacent slat cloths 11 and 12
The number of wales is set to 4 wales. Adjacent chain stitch rows 13a between each slat material 11 and the connecting portion 12
Between 13b, the second knitting yarn 22 and the fifth knitting yarn 25 are not connected, and instead of those knitting yarns 22 and 25, the reed swing is introduced to the fourth reed of [0088] The knitting yarns, which are knitting yarns, are connected.

That is, between the adjacent slat materials 11 and 11, the three adjacent chain stitch rows 13b, 13c and 13d, which are the three first knitting threads 21, have the second knitting thread 22 and the fifth knitting thread, respectively. Knitting yarn 2
The knitted fabric 12 for joining, which is joined at 5, is knitted. The chain stitch row 13d at one end of the connecting knitted fabric 12 is connected to the chain stitch row 13a at one end of the slat cloth 11 adjacent to the other end on the opposite side thereof by the connecting knitting yarn (fourth knitting yarn) 24. Be connected. In addition, in the knitted fabric 12 for connection shown in FIG.
Each adjacent chain stitch row 13b / 13c and chain stitch row 13c of the strip
Between each of 3d and 13d, a total of 2 third knitting yarns (23 ・ 23)
Are connected by.

The first knitting yarn is 82.5 dtex / 36f polyester multifilament yarn, the second knitting yarn is 165 dtex / 75f polyester multifilament yarn, and the third and fifth knitting yarns are 330 dtex /
The polyester multifilament yarn of 96f is a 22dtex / 2f polyester monofilament yarn (11dtex x 2) for the connecting knitting yarn 24 (fourth knitting yarn).
Is used. In this way, the connecting knitting yarn (fourth knitting yarn)
Since 24 is thinner than the other knitting yarns 21, 22, 23, 25 (particularly the first knitting yarn 21), if the connecting knitting fabric 12 is pulled, the connecting knitting yarn 24 will be slatted with the connecting knitting fabric 12 and the slats. Dough 1
Slat dough 11.11 adjacent to each other that is torn apart between 1
The knitted fabric 12 for connection is removed from between. As a result, 1
The warp knitted fabric is divided into several slats (11, 11).

In this case, the connecting knitting yarn 24 is formed on the slat material 11 which is adjacent to the chain stitch row 13d at one end of the three chain stitch rows 13b, 13c and 13d of the knitting fabric 12 at the other end. The chain stitch rows 13d are connected to each other. That is,
In the slat cloth 11, the connecting knitting yarn 24 is gripped and locked only on one chain stitch row 13a at one end,
In the connecting knitted fabric 12, the chain stitches 13b, 13c, 13d having a total of three strands at both ends and in the middle are gripped and locked.
Therefore, when tension is applied to the connecting knitting yarn 24 by pulling the connecting knitted fabric 12, the tension is (1)
In 2), it is dispersed in three chain stitch rows 13b, 13c, 13d, but on the slat material side (11), it is concentrated only in one chain stitch row 13a. For this reason, the connecting knitting yarn 24 is broken at the engagement position with the chain stitch row 13a of the slat material 11 where the tension concentrates, and the connecting knitted fabric 12
It will be pulled away from the slat cloth 11 while being gripped and locked by. Therefore, the broken waste of the connecting knitting yarn 24 is not left on the slat material 11.

At the time of the break, the slat cloth 11
Since tension acts from the connecting knitting yarn 24 on the chain stitch row 13a of the chain stitch, the needle loop 18 forming the chain stitch row 13a is grasped by the connecting knitting thread 24, and as a result, the side of the slat fabric 11 The rim provides a soft feel due to the slight relief of the needle loop 18 (FIG. 2). In this way, the number of the knitting yarns (13a) of the slat material with which the connecting knitting yarns 24 engage is determined by
When the number of the knitting yarns 13b, 13c, 13d of the connecting knitted fabric which are engaged with is smaller than the number of the knitting yarns 13b, 13c, 13d, the slat 20 is finished neatly without any broken waste of the connecting knitting yarn 24.

[0022]

According to the present invention (Claim 1), since the slats are knitted and set as one wide warp knitted fabric in which a plurality of slats are connected, the slats are evenly formed on the slats 11 in the setting process. Tension can be easily applied, and twisting and warping of the slat 20 in use can be suppressed by suspending it vertically. Further, since it is possible to wind the wide warp knitted fabric into a roll and then break the connecting knitting yarn to divide it into several slats, it is possible to save the trouble of winding the slats one by one.

According to the present invention (claim 2), when the connecting knitting yarn 24 is broken, the knitting yarn (21) of the slat 20 is not torn off and the side edges of the slat 20 are not released.

According to the present invention (Claim 3), the connecting knitted fabric 12 can be obtained without pulling the thin connecting knitting yarns 24 one by one.
By grasping and pulling, the connecting knitting yarn 24 held by the slat material 11 is broken, so that one warp knitted fabric is easily divided into a plurality of slats 20.

According to the present invention (claim 4), the broken pieces of the broken connecting knitting yarn 24 are not left behind on the slats 20, and the needle loops 18 on the side edges of the slats 20 protrude to form fine irregularities. Because it can be done, the slat 20 with a good feel is finished.

[Brief description of drawings]

FIG. 1 is a surface view showing a connected state between adjacent slat materials of a warp knitted fabric according to the present invention.

FIG. 2 is a surface view showing a state in which the warp knitted fabric according to the present invention is divided into a plurality of slats.

[Explanation of symbols]

11 slat fabric 12 Connected knitted fabric 13 ・ 13a ・ 13b ・ 13c ・ 13d Chain stitch row 18 needle loop 19 wale direction 20 slats 21 First knitting yarn 22 Second knitting yarn 23 Third yarn 24 Knitting yarn for connection (4th knitting yarn) 25 5th knitting yarn

Claims (4)

[Claims] 1. (a) In the process of arranging a plurality of vertical slats for vertical blinds (11, 11) in parallel in the length direction and knitting them at the same time, adjacent slats (11) and slats ( 11), the connecting knitting yarn (24) is arranged between (11) and (b) the connecting knitting yarn (2)
4) is knitted into the adjacent slat material (11) and the adjacent slat material (11) and locked to the knitting yarn of each slat material (11), and (c) the knitting yarns (24) for connection are used to adjoin. Slat fabrics (11/11) that fit together are knitted, and a plurality of slat fabrics (11/11) are knitted as one warp knitted fabric. (D) The shape of the warp knitted fabric is a binder for the warp knitted fabric. Or set by heating the warp knitted fabric,
(E) Thereafter, the knitting yarn for connection (24) is tensioned and ruptured, and the one warp knitted fabric is divided into a plurality of slats (20) to produce a slat for a vertical blind. (F) The tensile strength of the connecting knitting yarn (24) according to claim 1 is weaker than the knitting yarn of the slat material (11) for locking the connecting knitting yarn (24). The method for producing a slat for a vertical blind according to claim 1, which uses a yarn. 3. (g) Two or more knitting yarns 24 for connection according to claim 2 above, and (h) the knitting yarn for connection (24).
At the same time, the other knitting yarns (21, 22, 23, 25) are arranged between the adjacent slat materials (11) and (1), and (i) the knitting yarns (24) for connection and other With the knitting yarns (21, 22, 23, 25), the knitting fabric for connection (1
2) Adjacent slat cloth (11) and slat cloth (1)
Knitting between (1), (j) two or more connecting knitting yarns (2
4) is knitted by dividing it into the adjacent slat material (11) and slat material (11) to connect the connecting knitted fabric (12) and the slat material (11), and (k) connecting knitted fabric (12) ), The adjoining slat fabric (11/11)
The method for producing a slat for a vertical blind according to claim 2, wherein the slats are connected to each other. 4. (l) The number of knitting yarns of the slat material (11) that locks the connecting knitting yarn (24) according to claim 3, the number of connecting yarns that locks the connecting knitting yarn (24). Knitted fabric (12)
The method for producing a slat for a vertical blind according to claim 3, wherein the number of knitting yarns is less than the number of knitting yarns.