JP2904423B2 - Curtain place - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a curtain and a car.
It relates to curtains manufactured from ten fabric . More specifically, the present invention relates to a curtain fabric and a curtain which is thin, nevertheless cannot be seen through from the outside, is capable of softly lighting by blocking direct sunlight, and is excellent in sound insulation and heat retention.

[0002]

2. Description of the Related Art For windows and glass doors, curtains for thin or lace fabrics or curtains for thick fabrics made of a woven fabric for the purpose of shading, sound insulation, heat insulation and the like have been widely used. However, the conventional curtain made of a woven fabric of a thin fabric or a lace fabric has a drawback that an indoor scene can be seen from the outside through the curtain, privacy cannot be sufficiently protected, and heat insulation and sound insulation are low. On the other hand, a curtain made of a thick woven fabric is excellent in heat insulation, sound insulation, protection of privacy, and the like. However, when the curtain is closed, the lighting is insufficient or almost blocked, and the room becomes dark.

[0003]

SUMMARY OF THE INVENTION In view of the foregoing, the inventor has determined that a gentle daylighting with both the characteristics of a conventional thin or lace fabric curtain and the characteristics of a thick fabric curtain is possible. Research has been conducted with the aim of developing thin curtains that can protect privacy without being seen through from the outside, and are also excellent in sound insulation and heat insulation.
As a result, when the curtain fabric is produced from fine fibers obtained by dividing and splitting splittable conjugate fibers composed of two or more incompatible polymers, particularly when the curtain fabric is produced from the nonwoven fabric composed of the ultrafine fibers, The inventors have found that the object can be achieved and completed the present invention. Therefore, the present invention provides a nonwoven fabric composed of splittable conjugate fibers formed from two or more incompatible polymers having a weight of 50 to 500 g / m ² obtained by splitting and splitting the splittable conjugate fibers. A curtain fabric made of fine fiber nonwoven fabric. Further, the present invention includes a curtain manufactured from the curtain material.

[0004] In the present invention, the term "split conjugate fiber formed from two or more incompatible polymers" means that when cut at a right angle to the length direction of the fiber, the cross section is two or more. A plurality of incompatible polymers are regularly or irregularly in contact with each other, and by subjecting the composite fiber to an appropriate treatment, splitting or peeling (split / split) occurs at the joint. ) To form a fine fiber of small fineness composed of each polymer.

In the present invention, the term “ split type composite fiber”
Obtained by dividing and splitting the splittable conjugate fiber of the resulting nonwoven fabric
The term " curtain fabric made of a fine fiber nonwoven fabric " means a curtain fabric made of a nonwoven fabric in which at least one or both surface portions or the vicinity of the curtain fabric is formed of the fine fibers by the above-described splitting and splitting. Therefore,
The curtain fabric of the present invention has one or both surface portions or only the vicinity thereof formed of fine fibers by the splitting and splitting, and is formed by fine fibers split and split to a specific thickness portion of the curtain material. Or the entire curtain fabric is formed from the fine fibers by the splitting and splitting. In the former two cases, the remaining portion not formed by the fine fibers is undivided. May be formed of the above-mentioned splittable conjugate fiber, or may be formed of another fiber or cloth.

[0006] In the splittable conjugate fiber used in the present invention, all of the fine fibers formed by splitting and splitting rarely have a circular cross-sectional shape. Are formed together with the fine fibers having a circular cross-sectional shape in some cases. In the present invention, it is desirable to use a conjugate fiber in which at least half of the fine fibers formed by splitting and splitting have a non-circular cross-sectional shape. The conjugate form of the splittable conjugate fiber and the number and type of polymers forming the conjugate fiber are not particularly limited as long as they are as defined above.

An example of a splittable conjugate fiber used in the present invention and a state of splitting and splitting the splittable conjugate fiber will be specifically described with reference to schematic diagrams. FIG. 1 shows two incompatible polymers A
2 shows a splittable conjugate fiber in which the fibers and the polymer B are joined and arranged in parallel with each other. When the splittable conjugate fiber is split and split, the aggregate is made up of fine fibers as shown in FIG. FIG.
FIG. 4 shows a splittable conjugate fiber in which different types of polymers A, B and C are joined and arranged in a radial direction. When this conjugate fiber is split and split, a substantially triangular fine fiber as shown in FIG. Becomes an aggregate. FIG. 5 is a view showing a conjugate fiber in which islands made of polymer A are arranged side by side so as to be easily divided and split in polymer B. As shown in FIG. 6, a large number of flat fine fibers are aggregated.

Further, the plurality of polymers may not be regularly or linearly joined, for example, as shown in FIG.
The composite fibers may be intertwined and irregularly joined, and when the composite fiber is split or split, as shown in FIG. 8, an aggregate of irregular and different fineness fine fibers is obtained. In the split / split conjugate fiber, it is not always necessary that the split / split conjugate fiber is completely split / split into fine fibers over the entire length direction. For example, see FIG. 2, FIG. 4, and FIG. As such, a plurality of polymer portions may remain joined in an undivided state at the lower portion.

The conjugate fiber shown in the figure is an example of a splittable conjugate fiber that can be used in the present invention, and is not limited thereto, as described above. For example, the splittable conjugate fiber may be formed from four or more polymers. Furthermore,
The splittable conjugate fiber may be composed of one type of splittable conjugate fiber, or a plurality of splittable conjugate fibers having different conjugate forms may be mixed. For example, the composite fiber shown in FIG. 1 and the composite fiber shown in FIG. 3 is mixed, the composite fiber shown in FIG. 5 and the composite fiber shown in FIG. 7 are mixed, or another mixed fiber is used. can do.

[0010] The splittable conjugate fiber is a combination of two or more mutually incompatible polymers selected from thermoplastic polymers such as polyester, polyamide, polyolefin, polyvinyl chloride and other vinyl polymers. It can be manufactured by compound spinning using a joining spinning method, a special mixed spinning method, or the like. Examples of the combination of polymers in the splittable composite fiber include polyester / modified polyester, polyester / polyamide, polyester /
Examples include polyolefins, vinyl polymers other than polyamide / polyolefin, polyester / polyolefin, vinyl polymers other than polyamide / polyolefin, and vinyl polymers other than polyolefin / polyolefin. Among them, combinations of polyester / polyamide, polyester / polyolefin, and polyamide / polyolefin are desirable.

The polyester used in the conjugate fiber of the present invention includes terephthalic acid, isophthalic acid, naphthalene-2,6-dicarboxylic acid, phthalic acid, α, β- (4-
Carboxyphenoxy) ethane, aromatic dicarboxylic acids such as 4,4-dicarboxydiphenyl and 5-sodium sulfoisophthalic acid; aliphatic dicarboxylic acids such as adipic acid and sebacic acid; and acid components such as esters thereof. , Ethylene glycol, diethylene glycol, 1,
4-butanediol, neopentyl glycol, 1,6
Fiber-forming polyesters formed from diol compounds such as -hexanediol, cyclohexane-1,4-dimethanol, polyethylene glycol and polytetramethylene glycol. Among them, polyethylene terephthalate, polybutylene terephthalate, and ethylene terephthalate copolymer in which 90 mol% or more of the constituent units of the polyester are composed of polyethylene terephthalate units and / or polybutylene terephthalate units are desirable.

As the polyamide, nylon 6,
Nylon 66, meta-xylene diamine nylon, nylon 12, and these nylons containing a small amount of a third component can be mentioned. Further, typical examples of polyolefins include:
Examples include polyethylene, polypropylene, polybutene, and ethylene-propylene copolymer. The polymer forming the splittable conjugate fiber is a stabilizer, an ultraviolet absorber,
If necessary, additives such as a fluorescent whitening agent, other modifiers, coloring agents, and pigments may be contained.

[0013] The splittable conjugate fiber before splitting / splitting preferably has a denier of about 1 to 8 denier after passing through processes such as spinning, drawing, heat treatment, and crimping. The fine fibers obtained by splitting and splitting are about 0.0
It is desirable to have a fineness of 5 to 0.5 denier. In the curtain fabric of the present invention, the splittable conjugate fiber can be used as a continuous filament. However, a fiber length of about 2
Form short fibers of 0 to 120 mm and use these short fibers
It is desirable to produce curtain fabrics made of nonwoven fabric .

A curtain fabric made of non-woven fabric is manufactured by using a short fiber of splittable conjugate fiber to produce a dry web such as a random web, a parallel web, a cross web, or a wet web by a papermaking method. Then, the web is processed by a needle punch method, a high-pressure jet water flow method, or the like, thereby performing entanglement of the fibers and division / split into fine fibers. Entangling of the fibers and division and splitting into fine fibers are preferably performed by a high-pressure jet water flow method from the viewpoint of promoting splitting and splitting and increasing fabric strength. In that case, the water temperature of the jet water flow is set to a normal temperature to
C. and a water pressure of 10 to 200 kg / cm ²
It is good to select appropriately from the range. The treatment with the high-pressure jet water flow is preferably performed in multiple stages (usually 2 to 12 steps), whereby the conjugate fibers located at least on the surface portion of the nonwoven fabric are divided and split into fine fibers, and the fine fibers having a non-circular cross section are obtained. A fiber occupies more than half, and a nonwoven fabric in which fine fibers are closely entangled is obtained. In order to facilitate entangling, splitting and splitting into fine fibers, a surfactant or one of a plurality of polymers forming composite fibers is added to a high-pressure jet stream with a swelling agent. You may keep it.

The division / split into fine fibers and the entanglement treatment of the fibers by a needle punch, a high-pressure jet water stream or the like may be performed uniformly over the entire surface of the nonwoven fabric, or may be performed only on a specific portion, or a difference in strength. May be provided so as to perform unevenness. When the treatment is partially or unevenly performed, the patterning on the nonwoven fabric can be performed simultaneously with the division and splitting into fine fibers and the entanglement treatment.

Further, in order to increase the strength of the nonwoven fabric, it is preferable to bond the fine fibers to each other and / or the fine fibers and the undivided conjugate fibers in the nonwoven fabric. As a method of performing such bonding, there is a method of performing a bonding process by applying an appropriate binder to the nonwoven fabric after being subjected to splitting / cleaving into fine fibers and entanglement processing, A method in which polymer short fibers having a lower melting point are blended with short fibers made of a type composite fiber, and after the splitting, splitting and entanglement treatments, the low melting point fibers are melted to bond the fibers. be able to. As the binder in the former method, an acrylic resin liquid, a urethane resin liquid, or the like can be used. Further, as the low-melting short fiber in the latter method, a thermoplastic polymer fiber having a melting point lower by about 30 to 130 ° C. than the melting point of the fine fiber formed from the splittable conjugate fiber is desirable. The melting point fiber is preferably selected as appropriate according to the type of splittable conjugate fiber used. The amount of the binder and the low-melting-point fiber used can be appropriately selected according to the feeling of the intended curtain material and the like, but is usually preferably about 10 to 200% by weight of the base fiber.

Further, in order to increase the strength of the nonwoven fabric, a woven fabric may be laminated and integrated on the middle or one surface of the nonwoven fabric. And, for the nonwoven fabric produced as described above, if necessary, further heat treatment bonding and fixing between fibers,
The surface is flattened by ironing, patterned by heating embossing, colored by dyeing or printing, flame-retardant treatment, resin processing, softening processing, etc., to give a curtain material.

[0018] The curtain fabric made of a non-woven fabric may contain other natural fibers or synthetic fibers in an amount of about 50% by weight, if necessary, in addition to the above-mentioned splittable conjugate fibers during the production of the curtain fabric.
Can be mixed to the extent. When the weight (thickness) of the curtain material is usually about 50 to 500 g / m ² , the weight (thickness) is thin, and despite that, there is a sense of volume, and it blocks off direct sunlight and provides gentle lighting. A possible curtain is obtained. And when the weight per square meter is the same, the nonwoven fabric curtain is superior to the woven fabric curtain in the above points.

[0019]

EXAMPLES Example 1 Polyethylene Terephthalate (Intrinsic Viscosity [η] = 0.7)
2) and 6-nylon (intrinsic viscosity [η] = 1.16) were melted in separate melting devices, and the molten polymers were combined at a spinning head at a volume ratio of 1: 1 to perform bonding-separation of 2; After repeating this process, the fiber was spun at 290 ° C. to produce a laminated conjugate fiber having a cross-sectional shape shown in FIG. This composite fiber was drawn, heat-set, crimped, and cut by a conventional method to obtain a short fiber having a denier of 2 denier and a fiber length of 38 mm. This short fiber is passed through a card and a random webber, and has an average weight of 35 g / m.
^Two fiber webs were produced. The three webs were laminated and subjected to a needle punching process of 30 / cm ² with a # 40 needle, and then placed on a moving wire mesh support to have a hole diameter of 0.1.
From a high-pressure jet water nozzle having 5 mm nozzles arranged in a line, a water pressure of 70 kg / m ² was initially applied to a final pressure of 150 kg.
/ M ² in three stages while increasing the water pressure to a water pressure of
The treatment was performed by jetting a columnar water stream at a temperature of 20 ° C.

As a result, the average fineness of the fine fibers formed by splitting and splitting is 0.34 denier, and the depth of splitting and splitting differs in the thickness direction of the nonwoven fabric.
As a result, an entangled nonwoven fabric having an average weight of 114 g / m ² and an apparent density of 0.18 g / cm ³ consisting of fine fibers having a flat cross-sectional shape shown in Fig. 7 was obtained. In this entangled nonwoven fabric, fine fibers having a flat cross-sectional shape are densely entangled on the front surface, and a slight undivided portion exists on the back surface, and the undivided portion and the divided fine fiber portion are also dense. Was confounded.
This nonwoven fabric was treated with an acrylic resin solution (Dick Nal E-8310, manufactured by Dai Nippon Ink Co., Ltd.) to give 12 g / m2.
² and then a cationic surfactant (manufactured by Sanyo Chemical Co., Ltd .: Saphanol 503-D) was applied to soften. Next, when the surface was smoothed by calendering, a soft non-woven fabric with drapability was obtained. When this non-woven fabric was used as a curtain, compared to a woven curtain made of rayon spun yarn of the same weight, the light seen through the curtain was tight and excellent in shielding against direct sunlight. Daylight could be obtained and sound insulation was excellent.

Example 2 A polyethylene terephthalate copolymer (intrinsic viscosity [η] = 0.64; melting point 246 ° C.) obtained by copolymerizing 5 mol% of 5-sodium sulfoisophthalic acid and 6-nylon (intrinsic viscosity [η] = 1.16) were combined at the spinning head at a volume ratio of 1: 1 in the same manner as in Example 1 and bonding-separation was repeated twice, and then spun at 290 ° C. to have the cross-sectional shape shown in FIG. A laminated composite fiber was manufactured. This was stretched, heat-set, crimped, and cut by a conventional method to obtain a splittable conjugate short fiber having a single denier of 2.5 denier and a fiber length of 38 mm. A core-in-sheath type composite comprising a polyethylene terephthalate (intrinsic viscosity [η] = 0.66) as a core component and a polyethylene terephthalate copolymer (melting point 136 ° C.) obtained by copolymerizing hexamethylene terephthalate with 50 mol% of hexamethylene terephthalate. Short fibers for a thermal binder having a denier of 3 deniers and a fiber length of 38 mm were prepared using fibers. 85 parts by weight of the short fibers of the splittable conjugate fiber obtained above and 15 parts by weight of the short fibers for a heat binder were mixed and passed through a card and a random weber to produce a fiber web having an average weight of 50 g / m ² . The three webs were laminated and subjected to needle punching treatment and high-pressure jet water flow treatment in the same manner as in Example 1. As a result, the average weight of fine fibers having a flat cross-sectional shape formed by splitting and splitting was 164 g /
An entangled nonwoven fabric having m ² and an apparent density of 0.17 g / cm ³ was obtained. In this entangled nonwoven fabric, fibers mainly composed of the fine fibers having the flat cross-sectional shape are densely entangled on the surface, and a small number of undivided fibers are present on the back surface. And the heat binder fibers were closely entangled.

The nonwoven fabric is heat-treated at 150 ° C. to fix the fibers between the sheath portions of the thermal binder fiber, and further dyed with a cationic dye (Kayakuriru ED manufactured by Nippon Kayaku), soaped, and treated with a cationic surfactant ( Made by Nichika Chemical Co., Ltd .: Sansoflon TK-07) for softening. Next, when the surface was smoothed by calendering, a soft non-woven fabric with drapability was obtained. When this non-woven fabric was used as a curtain, compared to a woven curtain made of the same weight of polyester spun yarn, when viewed from the outside, the indoor scene could not be seen through and the privacy could be maintained. The light entering the room through the curtain was tight and excellent in direct sunlight, could be taken in a calm state, and was excellent in sound insulation and heat insulation.

[0023]

The curtain fabric according to the present invention is thin, and nevertheless it is not seen through from the outside, which is effective for protecting privacy. In addition, the curtain fabric of the present invention can block strong direct sunlight, and can provide soft and gentle lighting indoors. Further, the curtain fabric of the present invention is excellent in sound insulation and heat retention. Further, the curtain material of the present invention is:
There is a sense of volume and drape even when thin. The above-mentioned excellent effects are particularly remarkable in the curtain fabric of the present invention formed into a nonwoven fabric, and such effects of the present invention cannot be expected from the conventional curtain fabric made of a woven fabric.

[Brief description of the drawings]

FIG. 1 is a diagram showing an example of a cross-sectional shape of a splittable conjugate fiber used for producing a curtain fabric of the present invention.

FIG. 2 is a view showing a state in which a splittable conjugate fiber having the cross-sectional shape of FIG. 1 is divided and split into fine fibers.

FIG. 3 is a diagram showing another example of the cross-sectional shape of the splittable conjugate fiber used for producing the curtain fabric of the present invention.

4 is a view showing a state in which a splittable conjugate fiber having the cross-sectional shape of FIG. 3 is divided and split into fine fibrous shapes.

FIG. 5 is a view showing still another example of the sectional shape of the splittable conjugate fiber used for producing the curtain fabric of the present invention.

FIG. 6 is a view showing a state in which a splittable conjugate fiber having the cross-sectional shape of FIG. 5 is divided and split into fine fiber shapes.

FIG. 7 is a view showing still another example of the sectional shape of the splittable conjugate fiber used for producing the curtain fabric of the present invention.

8 is a view showing a state in which the splittable conjugate fiber having the cross-sectional shape of FIG. 7 is divided and split into fine fibers.

[Explanation of symbols]

 A polymer AB polymer B C polymer C

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-55-98953 (JP, A) JP-A-1-291814 (JP, A) JP-A-60-168000 (JP, A) JP-A-62 268861 (JP, A) JP-A-62-41375 (JP, A) JP-A-2-99993 (JP, U) JP-A-58-55885 (JP, U)

Claims (2)

(57) [Claims] 1. A nonwoven fabric comprising a splittable conjugate fiber formed from two or more incompatible polymers having a weight of 50 to 500 g / m ² obtained by splitting and splitting the splittable conjugate fiber.
Curtain area consisting of a fine-fiber nonwoven fabric. 2. A curtain manufactured using the curtain material according to claim 1.