JPH07184766A - Curtain - Google Patents

Abstract

PURPOSE:To provide a lightweight and strong product which possesses the high heat shielding performance, by forming a curtain from the cloth member which is formed by drilling a number of fine holes on the hollow thread which consists of a polymeric film and has the outside diameter and film thickness in each prescribed range. CONSTITUTION:A hollow thread 3 used for the cloth material for a curtain 1 which is constituted of the hollow thread consisting of a polymeric film has an outside diameter of 0.1-3mm and the film thickness of 7mum-1mm, and has a hollow part 5 formed. The diameter of a ventilating fine hole formed on the hollow thread 3 is set to 0.05-200mum, and the aperture rate is set to 10-80%. The cloth member consists of the woven fabric formed through the plain weaving, satin weaving, twill weaving, etc., of the hollow threads or the collected body of the hollow threads, and is worked to the shape, dimension, and thickness corresponding to usage. Further, one end of the curtain 1 is sealed by the polyurethane resin 2, and a suction device outside the system is connected at the other end through a polyurethane resin 2, and the inside of the hollow thread 3 is decompressed. Accordingly, the high strength and the reduction of weight are achieved, and the sound shielding performance is improved, and the dust in the atomophere can be sucked.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a novel curtain made of a cloth material composed of hollow fibers.

More specifically, the present invention relates to a curtain which has a high strength and a light weight due to the hollow structure of hollow fibers and has a high heat insulation performance by having a hollow layer.

More specifically, the present invention is a combination of a curtain (a porous hollow fiber curtain) made of a cloth material formed by using a hollow fiber made of a polymer membrane having a large number of fine holes, and a suction device outside the system. The present invention relates to a curtain capable of newly exhibiting a fine particle component removing function and / or a sound insulating function by suctioning and / or depressurizing the inside of the hollow fiber of the cloth material by combining them.

[0004]

2. Description of the Related Art Usually, a curtain is a filament solid thread (a solid thread corresponds to a hollow fiber, and has a cross-section of a thread, such as a so-called circle, ellipse, rectangle, triangle or quadrangle. The inner part of the cross section is filled with a constituent material such as a polymer). The functions of the solid yarn curtain are well known such as a function of blocking light such as direct sunlight, a private protection function of keeping the room from being seen from the outside, a heat retaining function and a function as an interior. .

However, as a function of the conventional solid yarn curtain, it is a so-called sound insulation function or a fine particle component in the atmosphere that prevents outside noise from entering the room and sound inside the room from leaking outside. Up to now, there is no known one having a function of removing fine particle components such as indoor and outdoor dust and soot caused by automobile exhaust gas or cigarette smoke.

On the other hand, research and development utilizing hollow fibers, particularly hollow fibers composed of polymer membranes having a large number of fine pores, are now actively conducted in a wide field, and many of these research and development have been advanced to date. The products used in the technical field have been created. For example, as a material used in the medical field, particularly as a material for artificial organs, many examples of use in dialysis machines such as heart-lung machines and artificial kidneys have been reported, and some of them have already been put into practical use. Further, many examples of using it in a filter as a material used as a filtering material for filtering impurities for purification of pure water or ultrapure water used for cleaning electronic parts such as IC are reported. Some have already been put to practical use.

The use of such a hollow fiber is made of a porous polymer membrane having a pore size intermediate between the sizes of the desired substance and the impurities, paying attention to the difference in size of the particles of the desired substance and the impurities. The desired substance and impurities were separated and filtered using a hollow fiber.

However, the present invention does not use such a hollow fiber as a conventional separating / filtering material, but rather as a curtain constructed of a cloth material, and is an example reported in the field of application to date. There was no.

[0009]

SUMMARY OF THE INVENTION An object of the present invention is to provide a curtain capable of exhibiting a sound insulation function.

It is another object of the present invention to provide a curtain having a function of removing fine particle components in the atmosphere.

A further object of the present invention is to provide a curtain having high heat insulation performance, high strength and light weight.

[0012]

Means for Solving the Problems As a result of earnest studies on a curtain which solves the above problems, the present inventor has focused on a cloth material formed by using a hollow fiber made of a polymer film, It was found that the above object can be achieved by producing a curtain using the same, and the present invention has been completed based on this finding.

Further, the present invention focuses on a cloth material formed by using hollow fibers made of a polymer membrane having a large number of fine pores,
It was found that the above object can be achieved by producing a curtain using the cloth material and sucking and depressurizing the inside of the hollow fiber with an external suction device, and based on this finding, the present invention has been completed.

That is, the present invention can be achieved by a curtain characterized in that it is made of a cloth material formed by using hollow fibers made of a polymer film.

Further, according to the present invention, in a cloth material constituted by using a hollow fiber made of a polymer membrane having a large number of fine holes through which a gas can permeate, the peripheral part of the cloth material is connected to a suction device outside the system, and suction is performed. By doing so, the inside of the hollow fiber of the cloth material is depressurized to form a sound insulation layer, which can be achieved by a curtain.

Further, according to the present invention, in a cloth material constituted by using a hollow fiber made of a polymer film having a large number of fine pores through which fine particle components in the atmosphere can pass, the peripheral portion of the cloth material is connected to a suction device outside the system. Then, by suction, the fine particle component is sucked into the hollow portion through the fine pores of each hollow fiber of the cloth material,
This can be achieved by a curtain characterized in that it can be removed to the outside of the system through the internal passage of the hollow portion.

[0017]

The present invention will be described in detail below.

First, the material of the hollow fiber made of the polymer membrane used in the present invention is not particularly limited, and examples thereof include acrylonitrile-butadiene-styrene copolymer resin, acrylonitrile-styrene copolymer resin,
Ethylene-vinyl acetate copolymer, polyamide, polycarbonate, polyethylene, polyethylene-terephthalate, polybutylene-terephthalate, methacrylic resin, polyacetal, polypropylene, polystyrene,
Polyvinyl chloride, fluororesin, cellulose acetate, polydimethylcyclosiloxane-polycarbonate block copolymer, acrylonitrile copolymer, regenerated cellulose, polymethyl methacrylate, polyacrylonitrile, polysulfone, ethylene-vinyl alcohol copolymer and the like. To be

Next, in the hollow fiber made of the polymer membrane used in the present invention, as a method for producing a large number of fine pores in the hollow fiber, for example, (1) drawing method: from the polymer membrane using the above material Hollow fiber is annealed at high temperature,
After stretching, a heat treatment is performed to form a membrane having a large number of fine pores, or (2) solvent extraction method: when a hollow fiber made of a polymer membrane made of the above material is molded, a filler is added in advance. A method of forming a membrane having a large number of fine pores by performing extraction and separation using a solvent or the like capable of dissolving only the filler and the like after molding, and the like.
A polymer film having a large number of fine pores having a pore size described later can be arbitrarily prepared.

The outer diameter of the hollow fiber used in the present invention is not particularly limited, but it is determined to have a unique size depending on its use, such as strength, bending resistance and elasticity. However, it is usually 0.1 to 3 mm, preferably 0.2 to 2.8 mm, more preferably 0.3.
.About.2 mm .mu.m, and in the case of a porous polymer membrane, the size is determined in consideration of the permeation (passage) rate and pressure resistance controlled by the size and the number (openness) of the pore diameter. However, for gas permeation, it is usually 0.05 to 200 μm, preferably 0.1 to 180 μm.
m, more preferably 0.3 to 150 μm, and for passing fine particle components, usually 0.35 to 150 μm, preferably 0.4 to 100 μm, more preferably 0.5 to
It is 80 μm.

Similarly, the thickness of the hollow fiber is usually 7 μm.
˜1 mm, preferably 10 μm to 0.9 mm, more preferably 20 μm to 0.8 mm, for gas permeation:
Usually μm to 1 mm, preferably 10 μm to 0.9 mm,
More preferably 20 μm to 0.8 mm, and for passing fine particle components, usually 8 μm to 1 mm, preferably 1
0 μm to 0.9 mm, more preferably 10 μm to 0.
It is 8 mm.

Next, as the hollow fiber cloth material used in the present invention, for example, a plain weave using a hollow fiber or a hollow fiber aggregate, a woven fabric using a woven weave, a twill weave and the like can be mentioned. . If necessary, these may be three-dimensionally laminated or multi-woven. The cloth material may be knitted cloth.
Further, the cloth material thus obtained can be processed into a required shape, size and thickness depending on the application.

As the suction device that can be used in combination with the porous hollow fiber cloth material used in the present invention, for example, a centrifugal fan, a propeller fan or the like may be used. In addition, the peripheral portion of the cloth material or a part of the suction device has a suction tube which can be connected to both,
If necessary, the suction pipe may be provided with a check valve.

Next, the method for connecting the peripheral portion of the porous hollow fiber cloth material and the suction device with the suction pipe is not particularly limited, and any method may be used as long as the connection portion is sealed. A known method similar to that used for connecting hollow fiber bundles such as a dialysis machine for artificial organs or a filter for ultrapure water may be used. For example, chemical bonding utilizing potting of urethane resin or the like. It can be performed using a method or the like.

[0025]

EXAMPLES Next, the present invention will be described in more detail with reference to Examples, but it goes without saying that the present invention is not limited to these Examples.

Example 1 Polyethylene outer diameter 1.45 to 1.5 mm, film thickness 10
Hollow fibers (non-porous) having a diameter of 0 to 105 μm were plain-woven to form a cloth material, which was cut into a rectangular shape having a long side of 200 cm and a short side of 190 cm to prepare a curtain. The weight in this case was 335 g.

Then, a commercially available curtain rail is installed on the ceiling of the laboratory (the height from the floor of the laboratory to the ceiling is 200 cm (the long side of the curtain) and the width of the laboratory is divided into two so as to divide the laboratory into two equal parts. It was installed at 180 cm (which is the short side of the curtain), and the obtained curtain was attached thereto by metal fittings. We tried to open and close the curtain in this case, that is, we opened and closed the curtain along the rails, but it was confirmed that it has excellent bending resistance and elasticity and that it has the flexibility to be used even if it is repeatedly bent or bent. It was

Next, the temperature on one side of the laboratory completely partitioned by the curtain is adjusted from the room temperature (25 ° C.) to 0 ° C. in about 10 minutes by adjusting the temperature from the outside to 0 ° C. The temperature change on the other side of the laboratory, which was partitioned by the curtain, was measured corresponding to the temperature change when maintained. The temperature measurement position was at the center of each partitioned space. As a result, after the temperature on one side reached 0 ° C, 1,
The respective temperatures on the other side after 5 and 10 hours were 25, 26 and 24 ° C. in the order of aging.

Comparative Example 1 A solid material made of polyethylene and having a diameter of 1.5 to 1.55 mm is plain-woven to form a cloth material, which is cut into a rectangular shape having a long side of 200 cm and a short side of 190 cm. Then, a curtain was produced. The weight in this case was 2680 g, and it was confirmed that the hollow fiber product of Example 1 could be made lighter.

Subsequently, as in Example 1, the curtain rail was installed on the ceiling so as to divide the test room into two equal parts, and the obtained curtain was attached by metal fittings. The operability of the curtain in this case, that is, the curtain was opened and closed along the rails, but the bending resistance and elasticity are lower than in Example 1, and the flexibility that can be used even when repeatedly bent or curved is low. It could be confirmed.

Then, in the same manner as in Example 1, the temperature change in the laboratory partitioned by the curtain was measured. As a result, the temperatures on the other side after the lapse of 1, 5 and 10 hours after the temperature on one side became 0 ° C. were 23, 15 and 8 ° C. in the order of aging, respectively. It was confirmed that the thread-made product was superior in heat insulation (heat retention function).

Example 2 FIG. 1 is a schematic sectional view of a curtain for removing fine particle components made of a porous hollow fiber according to the present invention, showing a state of a section of the curtain portion and a connecting portion between the curtain portion and a suction device outside the system. Is shown. The circles (◯) in the enlarged cross-sectional view of FIG. 1 schematically show the state of fine particle components passing through the fine pores.

The fine particle component removing curtain will be described below in more detail based on one embodiment of the present invention (FIG. 1). The suction device is a device that uses a commercially available centrifugal fan and is used with a suction tube attached. did.

The peripheral portion of the curtain 1 of the present invention is potted with a polyurethane resin 2 having flexibility, which has the bending resistance and elasticity necessary for opening and closing the curtain, and enhances the workability at the time of connection. In addition, the hollow fiber 3 made of a polymer membrane having a large number of fine pores can be held without blocking the hollow inside. Further, the peripheral portion of the curtain 1 is adhesively fixed and connected to a polycarbonate suction tube of a suction device outside the system.

The curtain 1 has a hollow fiber 3 made of polyethylene and having an outer diameter of 1.45 to 1.5 mm and a film thickness of 100 to 105 .mu.m, which has a hole diameter of 50 .mu.m and an opening ratio of 40% by a solvent extraction method.
After forming the fine pores 4 of 1., the hollow fiber 3 is plain-woven to form a cloth material, which is cut into a rectangular shape having a long side of 200 cm and a short side of 190 cm.

Further, as for the method of connecting the peripheral portion of the curtain 1 and the suction pipe, the entire periphery (4 sides) of the peripheral portion of the curtain 1 is potted and fixed by the polyurethane resin 2 over a constant width (2 to 10 cm) (in this case, Further, the hollow portion 5 of the hollow fiber 3 in the peripheral portion of the curtain 1 was completely covered up to about half or less of the width potted with the polyurethane resin 2). Regarding the side to be sucked after the polyurethane resin 2 is solidified (in this embodiment, there are a total of two sides, one long side and one short side, which are adjacent to the rectangle. Usually, this is the most preferable one). , The polyurethane resin 2 in the hollow portion 5 of the hollow fiber 3 at the portion solidified with the polyurethane resin 2
By cutting in parallel along the cutting edge at a position (1 to 5 cm) in which is not inserted, the cutting edge in the peripheral portion of the curtain 1 is aligned, and the hollow portion 5 of the hollow fiber 3 of the cut surface is formed.
Was obtained which had an opening surface without being blocked by the resin 2. The cut sides (two sides) thus obtained could be easily connected without inserting and fixing the hollow fiber bundles by inserting and fixing the lumps of the resin 2 into the suction tube as they were. As a result, the open surface of the hollow portion 5 of the hollow fiber 3 was smoothly connected to the suction tube without any sealing, and the connecting portion could be completely sealed.

In the same manner as in Example 1, a curtain rail was installed on the ceiling so as to divide the laboratory room into two equal parts, and the obtained curtain 1 was attached thereto by a metal fitting. The operability of the curtain in this case, that is, the curtain was opened and closed along the rails, but has the same bending resistance and elasticity as in Example 1,
It was confirmed that it has flexibility that can be used even if it is repeatedly bent or bent.

Next, as in Example 1, three people were allowed to smoke on each side of the laboratory, which was partitioned by the curtain 1. At the same time as smoking, can the suction device be operated and sucked, and through the fine holes 4 of the hollow fiber 3 constituting the curtain 1, the smoke of the indoor cigarette can be sucked into the hollow portion 5 of the hollow fiber 3 to remove the smoke of the cigarette. As a result of the measurement, it was confirmed that the smoke was sufficiently sucked from both sides by visual inspection and the degree of contamination of the filter attached to the suction device.

Example 3 Polyethylene outer diameter 1.45 to 1.5 mm, film thickness 10
Hollow fibers of 0 to 105 μm were used with a solvent extraction method to have a pore size of 30.
After forming micropores having a pore size of 40 μm and a porosity of 40%, the hollow fiber was plain-woven to form a cloth material, which was cut into a rectangular shape having a long side of 200 cm and a short side of 190 cm. The same operation as in Example 2 was carried out except that a curtain (curtain weight was 400 g) was used, and the curtain was connected to the suction device.

In the same manner as in Example 1, the curtain rail was installed on the ceiling so as to divide the laboratory room into two equal parts, and the obtained curtain was attached by metal fittings. The operability of the curtain in this case, that is, the curtain was opened and closed along the rails, but has the same bending resistance and elasticity as in Example 1, and has the flexibility to be used even when repeatedly bent or curved. It could be confirmed.

Next, while operating the suction device, the sound of the frequency in the audible range is output from one side of the laboratory partitioned by the curtain while sequentially increasing the frequency within a certain time, and the other side outputs the sound. The sound pressure of the sound was measured. Subsequently, the same measurement was carried out using the solid yarn curtain of Comparative Example 1, and as a result, the hollow fiber curtain was able to insulate almost the entire audible range compared to the solid yarn curtain. It was confirmed that it has an excellent sound insulation effect. Therefore, it was confirmed that it effectively acts on external noise and sound leakage from the room.

[0042]

INDUSTRIAL APPLICABILITY A curtain made of a cloth material formed by using a hollow fiber made of a polymer membrane used in the present invention has high strength and light weight due to the hollow structure of the hollow fiber, and has good operability (flexibility and elasticity). ) And having a high heat insulating property (heat retaining function) due to having a hollow layer, it can be used in a wide range of applications.

Further, in a curtain made of a cloth material formed by using a hollow fiber made of a polymer membrane having a large number of fine pores, which is used in the present invention, the fine pores and hollow internal paths of the porous hollow fiber are utilized to make a system. By combining with an external suction device, suction and / or decompression of the inside of the hollow fiber of the cloth material can newly exhibit the fine particle component removing function and / or the sound insulating function. It can be effectively used in the present situation where living environment (including noise caused by transportation and exhaust gas) (noise, air pollution, etc.) is getting worse.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view showing a cross-sectional state of the curtain portion of the porous hollow fiber curtain for removing fine particle components of the present invention and a connecting portion between the curtain portion and a suction device outside the system.

[Explanation of symbols]

1 ... Curtain, 2 ... Polyurethane resin for potting, 3 ... Hollow fiber made of polymer film,
4 ... Micropores, 5 ... Hollow part of hollow fiber.

Claims (13)

[Claims] 1. A curtain made of a cloth material formed by using hollow fibers made of a polymer film. 2. The curtain according to claim 1, wherein the hollow fiber has an outer diameter in the range of 0.1 to 3 mm. 3. The curtain according to claim 1, wherein the film thickness of the hollow fibers is in the range of 7 μm to 1 mm. 4. A cloth material formed by using hollow fibers made of a polymer membrane having a large number of fine pores permeable to gas,
A curtain characterized in that a peripheral part of the cloth material is connected to a suction device outside the system, and the inside of the hollow fiber of the cloth material is depressurized by suction to form a sound insulation layer. 5. The curtain according to claim 4, wherein the hollow fiber has an outer diameter in the range of 0.1 to 3 mm. 6. The curtain according to claim 4, wherein the film thickness of the hollow fibers is in the range of 7 μm to 1 mm. 7. The diameter of the fine holes is 0.05 to 200 μm.
The curtain according to claim 4, which has a range of m. 8. The open ratio of the fine pores of the hollow fiber is 10-8.
The curtain according to claim 4, wherein the range is 0%. 9. A cloth material constituted by using a hollow fiber made of a polymer membrane having a large number of fine pores through which fine particle components in the atmosphere can pass, and the peripheral portion of the cloth material is connected to a suction device outside the system to suck the material. By doing so, the fine particle component can be sucked into the inside of the hollow portion through the fine pores of each hollow fiber of the cloth material, and can be removed to the outside of the system through the internal path of the hollow portion. 10. The curtain according to claim 9, wherein the outer diameter of the hollow fiber is in the range of 0.1 to 3 mm. 11. The curtain according to claim 9, wherein the film thickness of the hollow fibers is in the range of 7 μm to 1 mm. 12. The diameter of the fine holes is 0.05 to 200.
The curtain according to claim 9, which is in the range of μm. 13. The open ratio of the fine pores of the hollow fiber is 10 to 10.
The curtain according to claim 9, which is in the range of 80%.