JP2011127409A - Method for manufacturing slat material for vertical blind - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To establish a manufacturing method for completing a plurality of strips of vertical blind slats as one sheet of knit material and subsequently dividing the knit material into a plurality of strips without breaking of yarn. <P>SOLUTION: The manufacturing method for a slat material comprises as follows. Connecting insertion yarns 3 are provided on right and left of each slat, and an unravelling chain stitch yarn 4 are arranged between the connecting insertion yarns 3, so as to form the slat material having a plurality of strips as one sheet of warp knit material. After being subjected to finishing heat-treatment, the one sheet of the warp knit material is divided into a plurality of slats by removing the unravelling chain stitch yarn 4. In the knitting, a chain stitch warp 1 and an insertion yarn 2 are applied with speed correlation tension by active delivery or passive delivery through individual beams. The connecting insertion yarn 3 and the unravelling chain stitch yarn 4 are discharged through the respective yarn stands. The tension of the connecting insertion yarn 3 is regulated by a tension-regulation roller by a brake 1, and the tension of the unravelling chain stitch yarn 4 is regulated by a friction brake 2, so that the tension of the connecting insertion yarn 3 is increased while the tension of the chain stitch yarn 4 is relaxed, whereby knitting is carried out while establishing an optimal tension relationship among four types of yarns. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a knitted slat used for a vertical blind.

General curtains have drape-like wrinkles on the curtains to improve aesthetics, but space is required for storage, and delicate adjustment of lighting is impossible. The vertical blind is composed of a plurality of vertically long strips called slats, but by changing the angle of the slats, it is possible to adjust the light and line of sight from the outside, and the slat members can be stored on both sides. It is possible to make it compact. Therefore, in recent years, this vertical blind curtain has been widely used. Resinous slats were used for this vertical blind. In recent years, however, fiber slats have been demanded for needs such as color patterns, texture, translucency, and permeability.

Patent Document 1 Patent No. 3586833
Patent Document 2 Japanese Patent Application No. 2006-184907
There is the above-mentioned patent as a prior art regarding fiber slats.

Japanese Patent No. 3586833 of Patent Document 1 which is a conventional technique has the following drawbacks.
1) When connecting strip-shaped slat fabrics with multiple vertical blinds, a tear thread with a lower tensile strength than slat fabrics is used, so there is a risk of tearing if the fabric is tensioned in the subsequent process after knitting. If it breaks, it will interfere with the subsequent processes. FIG. 1 shown in Patent Document 1 as a conventional technique is shown as FIG. 8 as a conventional technique in the present application. Although the detailed description of the prior art is omitted, the connecting knitting yarn 24 shown in FIG. 8 is torn when a single warp knitted fabric is divided into a plurality of slats, and corresponds to the above-mentioned split yarn having a low tensile strength. To do.
2) After knitting a plurality of slat fabrics as a knitted fabric through one sheet, the connecting knitting yarn is tension broken and split into multiple slats. There was a problem in the appearance due to the irregularities of the yarn at the broken end.
3) Since the method of dividing into multiple slats is due to breakage, there is a possibility of giving stress to the fabric and damaging the slat body.
Japanese Patent Application No. 2006-184907 of Patent Document 2 which is a prior art was the invention of the same person as the inventor of the present application, but had the following drawbacks.
1) Chain knitting warp and insertion yarns for knitting vertical slats, right and left connecting insertion yarns for vertical slats, and tension applying method and control between unraveled braid yarns provided between each slat fabric The method was not shown, and the appropriate tension relationship of each yarn was unclear, so it was difficult to maintain a uniform quality that was inexpensive and free from product-to-product variation.
2) Correlation between the sizes of chain warp and insertion yarns for knitting vertical slats, and the size of each yarn of unfolded chain knitting yarn provided between the left and right connecting insertion yarns and each slat fabric of vertical slats The amount of the four yarns used is not optimal, and it is difficult to maintain a uniform quality that is inexpensive and free from variation among products.

「手段３」
手段１において、鎖編み糸▲１▼と解し鎖編み糸▲４▼は全く同一な編み組織によって編成され、その使用量は解し鎖編み糸▲４▼が鎖編み糸▲１▼に比べ、数倍以上と格段に多くしたことを手段とするバーチカルブラインド用スラット生地の製法。
「手段４」
手段１において、連結用挿入糸▲３▼は生地経て方向編成長に対して１〜１．３倍の使用量としたことを手段とするバーチカルブラインド用スラット生地の製法。The present invention is realized by the following means.
"Means 1"
In the process of knitting multiple slat fabrics for vertical blinds parallel to each other in the length direction, the slat fabrics adjacent to each other in parallel are knitted from chain warp yarn (1) and insertion yarn (2). Separate insertion thread (3) is provided on the left and right sides of the knitted fabric, and unraveled knitting yarn (4) is placed between the connection insertion threads (3). The yarn is locked with the chain yarn 4 and then knitted as a single warp knitted fabric, and after finishing heat treatment, the strand yarn 4 is removed. In the manufacturing method of the slat fabric for vertical blinds in which one warp knitted fabric is divided into a plurality of slats, at the time of knitting, the chain knitting warp yarn (1) and the insertion yarn (2) are velocity-correlated tensions by individual beams, Insert the connecting thread ▲ 3 ▼ and chain knit (4) is ejected from each yarn stand, and the tension is adjusted by a tension adjusting device, so that the tension of the connecting insertion thread (3) is increased and the tension of the chain stitch thread (4) is relaxed. A method for producing a slat fabric for a vertical blind, which comprises knitting while establishing tension relationships among four types of yarns.
"Means 2"
In means 1, the thickness of the chain knitting warp yarn (1), the insertion yarn (2), the connecting insertion yarn (3) and the unraveling chain yarn (4) is the number of chain knitting warp yarns (1) per inch. A method for producing a slat fabric for a vertical blind using the following table as a means. However, D means denier, and 1 denier is the thickness of a thread when a 1 g weight of thread material is stretched to 9000 m.

"Means 3"
In means 1, the chain knitting yarn 1 and the chain knitting yarn 4 are knitted by the same knitting structure, and the amount of the knitting yarn 4 is compared with the chain knitting yarn 1. The manufacturing method of the slat fabric for vertical blinds by means of having made it a lot more than several times.
"Means 4"
A method for producing a slat fabric for vertical blind, wherein the connecting insertion thread (3) in the means 1 is used in an amount of 1 to 1.3 times the direction knitting growth through the fabric.

1) Since the unraveled yarns arranged between the slat fabrics that are arranged side by side in parallel and the connecting insertion yarns arranged on the left and right sides thereof do not have to use particularly weak yarns, It will not tear when tension is applied to the fabric in the subsequent process.
2) In order to divide and generate a plurality of slats, the yarn is not broken simply by unraveling the yarn. Further, the aesthetic appearance is improved because the connecting insertion thread does not protrude from the slat fabric due to the effect of increasing the tension of the connecting insertion thread at the split ends after being divided into a plurality of strips.
3) Since there is no breakage of the yarn when divided into a plurality of strips, the generation of yarn waste is suppressed.
4) Since splitting into multiple strips is done by unwinding the yarn, compared to the conventional tearing method, there is less stress on the fabric part and stability can be improved.
5) The chain knitting warp and the insertion yarn are uniformly controlled by the speed correlation tension of the individual beams, and the tension of the yarn is uniformly controlled. Thus, the tension of the yarn is controlled over a wide range. For this reason, the tension of the connecting insertion thread is increased and the tension of the untwisted yarn is relaxed to establish the optimum four types of thread tension, so that the quality is stable and inexpensive.
6) The thickness of the chain knitting warp, the insertion yarn, the connecting insertion yarn and the unlocked chain knitting yarn is set to the optimum value disclosed for the number of chain knitting warp yarns per inch. Inexpensive.
7) The chain knitting yarn and the chain knitting yarn are knitted with the same knitting structure, and the amount of use is increased. Stable and inexpensive.
8) Since the connecting insertion yarn is used in an amount of 1 to 1.3 times the direction knitting growth through the fabric, the quality can be further stabilized and inexpensive.

The figure which shows the whole structure of this invention 1 is a detailed partial configuration diagram of FIG. 1 when the tension relationship of the present invention is not applied. 1 is a detailed partial configuration diagram of FIG. 1 when the tension relationship of the present invention is applied. Diagram of the process of unwinding the knitting yarn from the state of FIG. 3 of the present invention The figure after unraveling the knitting yarn from the state of FIG. 4 of the present invention The figure which the division | segmentation after having unwound by the means of this invention and unwound was completed Explanatory drawing of tension control of each thread of the present invention Diagram showing the configuration of the prior art

  This will be described below with reference to the drawings.

  FIG. 1 is an overall configuration diagram according to the present invention, showing a configuration of the present invention in which a plurality of vertical blind slat fabrics are knitted as a single warp knitted fabric. Both end portions represent the end portions, and each slat portion is connected by a connecting portion which is a later-described chain-knitting yarn. In FIG. 1, one connecting portion is indicated by an arrow, but all other boundary portions between the slats are also connecting portions, but the arrow indication is omitted. After finishing the knitting, after finishing, the scraping portions and the slat fabric portions on both sides are unwound and the chain knitting yarn is unwound to form a plurality of vertical blinds.

FIG. 2 is a detailed partial configuration diagram when the tension relationship of the present invention is not applied, and the configuration is as follows. The slat fabric for a plurality of vertical blinds is knitted in parallel with the length direction using the slat fabric constituting chain knitting yarn (1), and knitted simultaneously using the slat fabric constituting insertion yarn (2). . In that process, unraveled chain knitting yarns (4) are placed between the slat fabrics that are arranged side by side in parallel, and connecting insertion threads (3) are provided on the left and right sides of each slat fabric, and they are separated from the slat fabrics. The chain knitting yarn (4) is locked to form one knitted fabric. In this case, when the tensions of the four types of yarns are knitted in a normal tension relationship, the result is as shown in FIG.
The part numbers {circle around (1)} to {circle around (4)} used in the description relating to the present invention apply to FIGS. 2 to 7 and are irrelevant to the part numbers of FIG. In FIG. 8 shown as the prior art described above, only the part number 24 described therein is used for the description in the present specification.

On the other hand, in FIG. 3, in the knitting process of FIG. 2, the tension of the unwound chain knitting yarn (4) is relaxed and at the same time, the tension of the two connecting insertion yarns (3) arranged on the left and right of each slat fabric is reduced. It is a figure in the case of strengthening. By doing so, the shape of the unwound chain knitting yarn {circle around (4)} is greatly deformed from the shape shown in FIG. 2 to the shape shown in FIG. 3. In this way, the purpose of increasing the tension of the connecting insertion thread (3) is that the untwisted chain knitting thread (4) is greatly deformed in the transverse direction to increase the tension of the connecting insertion thread (3). This is to prevent the insertion thread (3) from protruding from the slat fabric and to make it easier to unleash the disentangled yarn (4). The method of knitting the chain knitting yarn (4) is exactly the same as that of the chain knitting yarn (1), but the knitting chain knitting yarn (4) can be easily deformed in the horizontal direction as a single continuous thread. Can be solved.

After the desired fabric is knitted, finish processing is performed, and as shown in FIG. 4, the connecting insertion yarn (3) is broken without breaking the yarn from the knitting end portion of the chain-knitting yarn (4). The fabrics on both sides of the unwound chain knitting yarn (4) can be divided. Because of the so-called chain knitting structure, it can be pulled out as a single continuous thread by pulling the end of the knitting. FIG. 5 shows a state where the unwound chain knitting yarn {circle around (4)} is removed and the fabric is divided, and the unraveled unwound chain yarn {circle around (4)} is shown by a dotted line. At this time, by increasing the tension of the connecting insertion thread (3) and relaxing the unwound chain yarn (4), the unwound chain thread (4) is greatly deformed in the lateral direction. The insertion thread {circle around (3)} approaches the straight line in the direction, and does not protrude from the slat fabric. FIG. 6 is a view in which the knitted slat part is completed after the unwound chain knitting yarn {circle around (4)} is removed, the division of the slat fabric part is finished, and used for the target vertical blind.

Next, an optimum method for applying tension to each yarn according to the present invention will be described with reference to FIG.
The chain warp yarn (1) and the insertion yarn (2) supply each yarn from individual beams. A beam is a bobbin-shaped part wound with a thread usually made of aluminum or the like. When the knitting machine is driven, the yarn is drawn into the knitting machine, so that tension is generated, thereby rotating the beam and supplying the yarn from the beam. At this time, an appropriate brake such as friction is applied to the beam, and the beam is controlled to an appropriate tension. Tension is applied to the yarn by the correlation between the rotation of the beam accompanied by such a brake and the yarn drawing force correlated with the speed of the knitting machine, and the tension value is also controlled. In addition, the yarn is tensioned at the correlation speed between the beam and the knitting machine by driving the beam at a speed related to the appropriate knitting machine speed, and the value is also controlled. These tensions are defined for convenience as velocity correlation tensions. The chain knitting warp {circle around (1)} and the insertion yarn {circle around (2)} in FIG. 7 control the speed correlation tension to an optimum tension value. The plurality of yarns {circle around (1)} are all adjusted to the same tension with the tension that is the speed correlation tension described above. The same applies to the thread (2).
On the other hand, the connecting insertion thread (3) and chain knitting thread (4) in FIG. 7 are drawn from the respective thread stands to the knitting machine and discharged, and the connecting insertion thread (3) is between the yarn stand and the knitting machine. The tension of the untwisted yarn 4 is adjusted by the friction brake 2 provided between the yarn stand and the knitting machine. For the sake of convenience, these brakes 1 and 2 are defined as an external independent brake device. Thus, by providing an external independent brake device between the yarn stand and the knitting machine, it is possible to control with a braking force that gives a wide range of desired yarn tension values. The tension of the thread {circle around (4)} is relaxed so that knitting can be performed while establishing the optimum tension relation of the four kinds of threads. For this reason, the connecting insertion thread {circle around (3)} does not jump out from the side surface of each slat, and the disentangled yarn {circle around (4)} is easy to remove. As described above, according to the present invention, the tensions of the four types of yarns are applied and controlled to optimum values.

Each vertical blind has an industry standard of 80, 100, and 127 mm. The slat fabrics are standardized with 9, 18, 24 and 28 chain knitting warps per inch. In this case, the relative thickness of the chain knitting warp yarn (1), the insertion yarn (2), the connecting insertion yarn (3) and the untwisting chain yarn (4) is as follows: It has been experimentally found that when the present invention is applied to a relationship satisfying the following table with respect to the number of ▼, a good quality slat fabric for vertical blinds is obtained. However, D in the table means denier, and 1 denier is the thickness of the yarn when a 1 g weight yarn material is stretched to 9000 m.

A vertical blind slat that is divided into strips in the vertical direction can be obtained by finishing after knitting and dividing into a set width. In FIG. 4, the portion where the chain knitting yarn {circle around (4)} is pulled out and removed is the slat fabric knitting end portion, which is the upper end portion of FIG.
FIG. 5 and FIG. 6 are views after the division of FIG. 4, and thus a vertical blind slat divided in a strip shape in the direction through a plurality of strips is obtained.

A further feature of the present invention is the difference in the amount of use of the four types of yarn. By maintaining the amount of this yarn used at an optimum ratio, the yarn is of high quality and has a low defect rate. The chain knitting yarn (1) and the chain knitting yarn (4) are knitted by the same knitting structure, but the amount of the knitting yarn knitting yarn (4) is several times that of the chain knitting yarn (1). The insertion thread for connecting (3) is 1 to 1.3 times the amount of knitting growth through the fabric, so that there is less meandering on the side and it is close to a straight line in the direction. Because of its shape, the quality can be further stabilized and inexpensive. This relationship is illustrated in FIG.

  The vertical blind slats made according to the present invention have practicality, grace, uniformity of quality, and low cost, and thus are expected to make a significant industrial contribution.

(1): Slat fabric constituting chain knitting yarn (2): Slat fabric constituting insertion yarn (3): Linking insertion yarn (4): Unchained yarn 24: Linking knitting yarn

Claims (4)

In the process of knitting multiple slat fabrics for vertical blinds parallel to each other in the length direction and knitting simultaneously, adjacent slat fabrics are knitted from chain warp and insertion yarn, and each slat has a separate A connecting insertion thread is provided, and an unchained yarn is disposed between the connecting insertion threads, and the slat fabrics are unfastened via the connecting insertion thread and locked with the chain stitching yarn, so that a plurality of slats are formed. In the manufacturing method of slat fabric for vertical blinds, where the fabric is knitted as a single warp knitted fabric, and after finishing heat treatment, the warp knitted fabric is removed and the single warp knitted fabric is divided into a plurality of slats. When knitting, the chain warp and the insert yarn are applied and controlled by the speed correlation tension created by the individual beam and knitting machine, and the chain insert yarn is released from each yarn stand. The vertical blind slat fabric is knitted by applying and adjusting tension by an external independent brake device, thereby increasing the tension of the connecting insertion thread and relaxing the tension of the chain stitch thread. Manufacturing method. The thickness of the chain knitting warp yarn, the insertion yarn, the connecting insertion yarn, and the unlocked chain knitting yarn according to claim 1 satisfies the following table with respect to the number of chain knitting warp yarns per inch of slat fabric. A method of making slat fabrics for vertical blinds. However, D means denier.

In claim 1, the chain knitting yarn and the unraveling chain knitting yarn are knitted by the same knitting structure, and the amount of the unraveling chain knitting yarn is more than several times that of the chain knitting yarn. The manufacturing method of the characteristic slat cloth for vertical blinds. The method for producing a slat fabric for vertical blinds according to claim 1, wherein the connecting insertion yarn is used in an amount of 1 to 1.3 times the direction knitting growth through the fabric.

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