JPH076339B2 - Vertical blinds - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention is a large number of vertically arranged at equal intervals for the purpose of shading, blindfolding, energy saving, decoration, etc. in openings of office buildings, factories, houses, hotels, etc. The present invention relates to vertical blinds used side by side.

(Prior Art) Conventionally, as a raw material of a glass cloth for vertical blinds, a twisted one has been used in order to prevent fluff and to balance the yarn.

Therefore, there is a large residual torque in the raw thread even after being woven, and further after being processed and slit with resin. Therefore, for example, a rectangular vertical with a width (horizontal direction) of 10 cm and a length (vertical direction) of 5 m. When the blind was hung vertically with the long direction up and down, a large twist was seen where the angle at which the upper and lower edges intersect when viewed from above exceeded 20 degrees. Moreover, the twist became larger as it went down. Vertical blinds are usually arranged at regular intervals as rectangular slats with a width of a few cm to 20 cm and a length of 0.5 to 20 m, so if such a large twist exceeding 20 degrees is present, it is very unsightly and shading.・ The essential performances of vertical blinds such as blinds and decorations were also insufficient.

(Problems to be Solved by the Invention) The present invention is awkward due to a large twist, and is a vertical blind of a conventional glass cloth base cloth that does not sufficiently exhibit essential performances such as light shielding, blinding, energy saving, and decoration. The problem of is solved all at once.

(Means and Actions for Solving the Problems) The present invention provides a vertical blind having a smaller twist than the conventional product, whereby the above-mentioned various problems can be solved at once.

In the present invention, after the warp and the weft are both woven with the single yarn glass yarn of the same count, in the resin-processed glass cloth, all the warp and weft contained in the unit area have the same twist direction. The gist of the vertical blind is that the total number of twists of the weft yarn is 0.80 to 1.40 times the total number of twists of the warp yarn.

Conventionally, the twist is woven with warp 1z (1 time / 25mm, left twist) and weft 1z, and the density is 44 warp / 25mm, 31 weft
/ 25mm glass cloth (in this case, the total number of twists of the weft included per unit area is 0.70 times the total number of twists of the warp), warp 0.7z, weft 0.7z,
In addition, glass cloth with a density of 42 warps / 25 mm and 33 wefts / 25 mm (in this case, the total number of twists in the weft contained per unit area is 0.79 times the total number of twists in the warp) is resin-processed These materials are used as vertical blinds, but these are rectangular vertical blinds with a width of 10 cm and a length of 5 m, and when hung with the long direction up and down, the angle at which the upper and lower ends intersect when viewed from above is 20. It was far beyond the limit.

Then, the present inventor found that various torques that the twist of the warp and the weft of the glass cloth try to return to the original are the cause of the twist of the vertical blind as a result of making and testing various samples, and the width (width) When a rectangular vertical blind of 10 cm in length) and 5 m in length (vertical direction) is hung with the long direction up and down, we found a method to make the angle at which the upper and lower ends intersect when viewed from above 20 degrees or less. It is a thing.

That is, in the method, after the warp and the weft are all woven with the same number of single yarn glass yarns, and in the resin-processed glass cloth, the warp and weft contained in the unit area have the same twisting direction, Moreover, the total number of twists of the weft is 0.80 to 1.40 times the total number of twists of the warp.

The total number of twists referred to here is a value obtained by adding the number of twists of each of the used yarns included in the unit area.

Conventionally, both single warp and weft yarns of the same count are usually used for the vertical blind, but both warp and weft yarns are of the same count. The reason for this is that it is cheaper than using plied yarn and / or glass cloth of different counts, and The reason is that the moire pattern that occurs in the glass cloth using the twisted yarn does not occur in the case of using the single yarn.

Therefore, the present invention is not novel in terms of using the same count and single yarn.

In the present invention, it is appropriate that the unit area of the glass cloth is defined as a form in which ten or more warps and wefts are included in order to reduce the error in the total number of twists. Also, the fact that all the warps and wefts contained in the area have the same twisting direction means that the twist caused by the torque of the warp expands when the wefts have the opposite twisting direction, but Cases are necessary to be mitigated and appropriate to increase productivity. In addition, when the total number of twists of the weft is less than 0.80 times or more than 1.40 times the total number of twists of the warp, a rectangular vertical blind with a width of 10 cm and a length of 5 m is hung with its long side up and down. When viewed from above, the angle at which the upper and lower ends intersect exceeds 20 degrees, which is not desirable.

The glass thread of the present invention is usually ECG75-1 / 0 (however, E is E glass composition, C is long fiber, G is 9 microns, and 75 is weight 6 per 1000 m.
7.5 g, ie 67.5 tex, 1/0 means single yarn. )
However, in the present invention, C glass fiber or S glass fiber may be used, and the diameter of filament may be 7 microns, 6 microns, 5 microns, 3 microns or the like other than 9 microns. No problem, the count is 135, 33.7, and 2 in addition to 67.5.
Even if 2.5 tex etc. are used, if the warp and the weft are all of the same count, the torque ratio at which the twist of the warp and the weft is about to return to the original should not change, and there is no problem. Although the glass filament used in the present invention is generally a glass filament yarn, the same effect can be obtained by using a glass bulky yarn such as glass bulky yarn or glass sliver yarn.

The glass cloth is woven by using the glass raw yarn for warp and weft. Usually, to install a vertical blind, the glass cloth is heat cleaned → treated with a coupling agent → prepared with urethane resin → with vinyl chloride resin. Laminating → Slitting to a specified size → Mounting brackets →
Although a construction process is performed, a method may be used in which the spinning binder is a plastic size binder and the heat cleaning and the coupling agent treatment are omitted.

The weave of the glass cloth is usually plain weave, but the use of twill weave and satin weave as well as various pattern weaves does not depart from the spirit of the present invention.

(Example) Example 1 Glass yarn ECG75-1 / 0-0.5z for warp (twist number 0.5 times / 25 mm,
The twist direction is left twist), the weft is glass yarn ECG75-1 / 0-0.8z
(The number of twists is 0.8 twists / 25mm, the twisting direction is left twist) is set on the air-jet loom, and the warp yarn is 44 / 25mm, the weft yarn is 31 / 25mm,
A plain weave glass cloth having a width of 1270 mm was obtained. In this case, the total number of twists of the weft threads contained in the 25 mm square was 24.8, which was 1.13 times the total number of twists of the warp threads, 22.0.

This cloth was heat-cleaned, treated with epoxysilane, then pretreated with urethane resin, and laminated with vinyl chloride resin to obtain a sheet having a thickness of 0.3 mm.

When a rectangular piece with a width (horizontal direction) of 10 cm and a length (5 m in the vertical direction) was cut out from this sheet and hung with the long direction up and down, the angle at which the upper and lower ends intersected was 7 degrees when viewed from above. .

Example 2 Glass yarn CCG75-1 / 0-0.7z (C glass composition) was used as a warp, and glass yarn CCG75-1 / 0-0.7z was used as a weft in a shuttle loom, and 44 warps / 25 mm, 31 wefts / A plain weave glass cloth with a width of 25 mm and a width of 1270 mm was obtained. In this case, since the weft was twisted by tube winding, it was 1.0 z, and the total number of twists of the weft contained in the 25 mm square was 31.0, which was 1.01 times the total number of twists of the warp, which was 30.8.

The cloth was heat-cleaned, treated with aminosilane, then pretreated with urethane resin, and laminated with vinyl chloride resin to obtain a sheet having a thickness of 0.3 mm.

When a rectangular piece with a width of 10 cm and a length of 5 m was cut out from this sheet and hung with the long direction up and down, the angle at which the upper end and the lower end intersect when viewed from above was 9 degrees.

(Effects of the Invention) According to the present invention, the vertical blind of the conventional glass cloth base cloth which is unsatisfactory due to a large twist and does not sufficiently exhibit essential performances such as light shielding, blinding, energy saving, and decoration. The problem is that all the warps and wefts contained in the unit area of the glass cloth have the same twist direction, and the total number of twists of the weft is 0.80 to 1.40 times the total number of twists of the warp. By reducing the twist, it becomes possible to solve all at once.

Claims (1)

[Claims] 1. A warp and a weft are all woven with a single-strength glass yarn of the same count, and then in a resin-processed glass cloth, all warps and wefts included in a unit area have the same twist direction. A vertical blind characterized in that the total number of twists of the weft is 0.80 to 1.40 times the total number of twists of the warp.