JPH0345745A - Cloth for bedding - Google Patents

Abstract

PURPOSE:To provide a bedding cloth composed mainly of a polyester fiber containing specific amounts of a polyoxyalkylene glycol and a metal sulfonate derivative, capable of keeping its original water-absorption even after repeated washing and having excellent water-absorption, sweat-absorption, durability and heat-insulation. CONSTITUTION:The objective bedding cloth is composed mainly of a polyester fiber containing 0.2-10wt.% of a polyoxyalkylene glycol having an average molecular weight of >=800 (e.g. polyoxyethylene glycol or polyoxyethylene- polyoxypropylene block copolymer) and 0.1-5wt.% of a metal sulfonate derivative [e.g. the compound of formula l to IV (M is alkali metal; R is >=8C alkyl)].

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to nightwear that does not lose its water absorbency even after repeated washing and has excellent water and sweat absorption properties with excellent durability. The present invention also relates to a nightwear material that has heat retention properties in addition to the above properties.

[Conventional technology]

Conventionally, fabrics for nightwear such as futon side fabrics, duvet covers, sheets, nightwear, and pajamas have been widely used in terms of sweat and water absorption properties, such as woven and knitted fabrics made mainly of cotton and regenerated cellulose fibers. It is used. In addition, bedding containing far-infrared radioactive materials has been proposed, for example, in Japanese Patent Application Laid-Open No. 61-1999. -217112 Publication, Utility Model Application No. 621423
No. 60 discloses that fibers containing far-infrared radioactive substances are used for underwear,
Japanese Patent Application Publication No. 63-92720 is used for futons, mattresses, etc.
JP-A No. 63-182444, and a flocked cloth has been proposed in JP-A No. 64-78828.

[Problem to be solved by the invention]

Conventional bedclothes were fabrics made mainly of cellulose fibers, but when used for bedridden elderly people, sick people, children, etc., or when used by people with multi-faceted skin, they are moldy. There were problems when using the product, such as the generation of water and a feeling of dampness due to sweat. In response to these problems, conventional nightwear made of synthetic fibers does not have sufficient sweat or water absorption properties and is therefore unfavorable from a sanitary standpoint. Furthermore, when producing dyed products, there are problems in producing products with high color fastness, particularly washing fastness and light fastness, using cellulose fiber fabrics. The present invention has high water absorbency and high absorbency, and can be used repeatedly.
There is no drop in water absorption effect against U, and it has high heat retention.
Another object of the present invention is to provide a nightwear material that can be dyed vividly and is made of fibers mainly composed of polyester fibers that have excellent color fastness.

[Means to solve the problem]

The present invention provides nightwear fabrics whose main constituent fibers are polyester fibers containing 0.2 to 10% by weight of polyokine alkylene glycol and 0.1 to 5% by weight of sulfonic acid metal salt derivatives, each having an average molecular weight of at least 800. be. The present invention is characterized in that durable water-absorbing polyester fibers are used as the main fibers constituting the nightwear. That is, the water-absorbing polyester fibers used in the present invention are produced by spinning polyesters such as polyethylene terephthalate, polybutylene terephthalate, copolymers containing 80 mol% or more of ethylene terephthalate, and polyhexamethylene terephthalate. , an average molecular weight of at least 800, preferably 2. ．． 00
It is important to blend 0 or more polyoxyalkylene glycol in a proportion of 0.2 to 10% by weight based on polyether, and further blend a sulfonic acid metal salt derivative in a proportion of 0.1 to 5% by weight. . The polyoxyalkylene glycol having an average molecular weight of at least 800 is selected from, for example, polyoxyethylene glycol, polyoxyethylene-polyoquinopropylene block copolymers, copolymers containing 50 mol% or more of polyquinoethylene, etc. Polyoquine alkylene glycols can be used. If the content of polyoxyalkylene glycol in the polyester polymer is less than 0.2% by weight, the desired water absorption is insufficient. If it exceeds 10% by weight, spinnability will be poor, so it is preferable. Further, an antioxidant may be included in the polyoxyalkylene glycol. especially,
When using a polymer with a high melting point such as polyethylene terephthalate, the spinning temperature becomes high and the polyoxoalkylene glycol tends to undergo oxidative decomposition and thermal decomposition. To prevent this, a hindered phenol-based antioxidant is added. It is effective to make it into fibers. On the other hand, the sulfonic acid metal salt derivative used in combination with the polyoxyalkylene glycol has surface active properties that have at least one hydrophilic group of the sulfonic acid metal salt and an appropriate hydrophobic group such as an alkyl group in one molecule. Compounds are preferred. For example, the structure shown below is exemplified, but of course the structure is not limited to these. (1) R now so, fox, (2) R◇餠5031A,
(5) R-CON-5O,M, (6) RO
SO, Ml(7) R-0(C,I(,0)nSO,
M. (8) R-@-0(Ctl(,O), SO3M. (9) RCONH-OSO,ll where M represents an alkali metal, usually sodium, potassium, or lithium, with sodium being particularly preferred.R has 8 carbons
The above alkyl groups are preferred. In the case of an alkyl group having 7 or less carbon atoms, the compatibility with polyester becomes slightly poor. n is an integer of 20 or less. Also, a mixture of the above compounds may be used. If the content of the sulfonic acid metal salt derivative in the polyester polymer is less than 0.1% by weight, the desired water absorption is insufficient. Moreover, if it exceeds 5% by weight, the stringiness during spinning will be poor, single yarn breakage and yarn breakage will increase, resulting in undesirable over-rolling and yarn breakage.
The stretchability is also poor, and since the draw ratio is low, the yarn has low strength, which is not preferable. In addition, regarding the abundance ratio of polyoquine alkylene glycol and sulfonic acid metal salt derivative, it is found that polyester, polyoquinoalkylene glycol, and sulfonate metal salt derivative are more abundant in polyoquine alkylene glycol than in sulfonate metal salt derivative. This is preferable because it has good compatibility and forms a stable dispersion state in the form of micro-sea islands, allowing stable spinning. Preferably, the ratio of the polyoquine alkylene glycol to the sulfonic acid metal salt derivative is in the range of 6:4 to 7:3, also from the viewpoint of the desired water absorption performance. When the abundance ratio of sulfonic acid metal salt derivative increases,
The dispersion state in the polyester becomes non-uniform, resulting in poor process properties such as spinnability and stretchability. In the present invention, a polyester polymer containing the above-mentioned compound is melt-spun, subjected to ordinary processing steps such as stretching, shrinking, and heat treatment, to obtain a polyester stable fiber having a single fiber fineness in the range of 1 to tO denier. It can be a fiber or filament. In addition, in order to obtain high water absorption as underwear, w&X
The cross-sectional shape of t is preferably an irregular cross-section rather than a round cross-section. Particularly preferable cross-sectional shapes of the fibers include, for example, flat fibers having a specific degree of flatness (see FIG. 1) or irregular cross-sectional fibers having recesses of a specific shape (see FIG. 2). Examples of flat fibers having a specific flatness include:
As shown in Figure 1, if the maximum length of the fiber structural surface is W and the maximum width is W, then the value expressed by L/W is the flatness,
The flatness is in the range of 1.5 to 15, preferably 2.5 to 8.
．． Flat fibers in the range of O are preferred. If the flatness is too large, spinnability and stretchability will deteriorate, which is not preferable. In addition, irregular cross-section fibers having a concave part of a specific shape satisfy d/12≦2, where d is the shortest distance connecting both ends of the entrance and Q is the distance to the deepest part of the concave part. However, if the recess is just a dent, it will have little effect. The number of recesses is about 1 to 5. By using such a fiber with an irregular cross section, a synergistic effect can be exerted between the water absorption kneading agent in the fiber and the capillary phenomenon. In the present invention, the above-mentioned water-absorbing polyester fibers may be combined with other fibers such as cotton, hemp, regenerated cellulose fibers, polyvinyl alcohol fibers, polyolefin fibers, polyamide fibers, polyester fibers, and acrylic fibers, if necessary. They are blended or blended into spun yarns or filament yarns, which are then used to make various types of fabrics such as woven and knitted fabrics using normal methods, and these are used as nightwear fabrics. or,
Even in the case of non-woven fabrics, for example, water-absorbing polyester fibers are used as stable fibers, and if necessary, heat-binder fibers, heat-shrinkable fibers, and other cotton, linen, recycled fibers, etc. It can be produced by mixing it with fibers such as cellulose fibers, polyvinyl alcohol fibers, polyamide fibers, polyolefin fibers, polyester fibers, and acrylic fibers by a conventional dry method or wet method. The nightwear fabric of the present invention is composed of these fabrics such as woven fabrics, knitted fabrics, non-woven fabrics, etc., and the water-absorbing polyester fibers constitute at least 60% by weight of the fibers constituting these fabrics.
From the viewpoint of water absorption performance, it is desirable to use the above amount. Furthermore, it is also preferable that the nightwear fabric of the present invention is finished with a treatment agent such as an antibacterial agent, deodorant, aromatic agent, cationic activator, or softener, if necessary. In addition, during the production of fibers, we use metal oxides, ceramics, far-infrared emitting materials such as titanium dioxide, silica, alumina, magnesia, mullite, zirconia, zircon sand, spinel, ferrite, cornlite, zirconium carbide, zirconium oxide, and carbon. Noya Aimono,
20% by weight or less of near- and mid-infrared radioactive substances that emit well near- and mid-infrared rays, such as Photon Ceramic #101 #102 (manufactured by Photon Ceramics Co., Ltd.) alone or in combination;
It is preferable to add 3 to 20% by weight from the viewpoint of heat retention. Furthermore, fabrics for nightwear and other purposes are subjected to dyeing, printing, and other finishing treatments to produce products. The nightwear fabric made using the water-absorbing polyester AT of the present invention has high water absorption and drying properties, does not lose its water absorption effect even after repeated washing, can be dyed brightly, and has high color fastness. It is a fabric mainly made of crushed polyester fibers, and is suitable for fabrics for nightwear such as futon side fabrics, duvet covers, sheets, nightwear, pajamas, and blankets.

【Example】

Next, embodiments of the present invention will be explained using specific examples, but the present invention is not limited to these examples. In addition, parts and % in the examples are lfr l) unless otherwise noted.
It's about weight. Further, the intrinsic viscosity was determined by measurement at 30° C. in a mixed solution of equal amounts of phenol/tetrachloroethane. Examples 1 to 4, Comparative Example I A melt of polyethylene terephthalate having an intrinsic viscosity [η] = 0.62 was added with 8% polyoxyethylene glycol having an average molecular ffi of 11.000, 4% sodium dodecylbenzenesulfonate, and a binder. After adding 0.5% of dophenol-based antioxidant and mixing through a static mixer, undrawn fibers with various cross-sectional shapes were spun at a spinning temperature of 285°C using spinnerets with various nozzle shapes. Obtained. This fiber was stretched 3.5 times in hot water at 75°C, applied with a fiber oil containing an ethylene oxide adduct of phosphoric acid ester as a main component, mechanically crimped, heat-set, and dried. Thereafter, a water-absorbing polyester av1 having a single yarn fineness of 2 denier was obtained. This fiber has a fiber length of 51111Ql.
The fibers were cut into stable fibers, spun into yarn, and woven in a conventional manner to produce plain woven fabrics (Examples 1 to 4). For comparison, ordinary polyethylene terephthalate fibers were used to make a plain woven fabric in the same manner as above (Comparative Example 1). For these fabrics, a test piece with a - side of 5 cm,
It was placed on the water surface, and the time taken for water to spread over the entire surface, that is, the water absorption rate, was measured. As a result, as shown in Table 1, the practical fabric had extremely good water absorption performance. In addition, when the fabric obtained in the example was sewn into nightwear, it had good sweat absorption even for people with multi-layered skin, and it did not feel wet and felt good to the touch. The moisture diffusion area in the table is calculated using raw cotton obtained in each case to form a web with a density of 0.02 g/am', and under standard conditions (20°C, 65% RH), a red ink aqueous solution of 0.35 g/am' is used.
This is the spread area of the solution after 10 minutes of lowering mQa. In addition, after 10 washes, it was carried out in accordance with JIS LO217-103 method, in which synthetic detergent for clothing was added and dissolved at a ratio of 2g to 1i2 of water at a liquid temperature of 40°C to make a washing liquid, and this washing Washing is started by immersing the sample and, if necessary, the load cloth into the solution at a bath ratio of 1:30. and,
After processing for 5 minutes, stop the operation, dehydrate the sample and the loaded cloth in a dehydrator, then change the washing liquid to fresh water at room temperature, rinse for 2 minutes at the same bath ratio as above, and then dehydrate. Rinse again for 2 minutes and air dry. Do the above 10 operations
A measurement sample was obtained after repeating the test 10 times. Example 5 Ethylene oxide/propylene oxide (75:25) random copolymer with an average molecular weight of 115,000 was mixed with polybutylene terephthalate having an intrinsic viscosity [η] = 0.72.
After adding 0% sodium alkyl sulfonate, 1% higher sodium alkyl sulfonate, and 0.2% hindered phenolic antioxidant, and mixing through a static mixer, the fibers were spun at a spinning temperature of 270°C to form the concave portion shown in Fig. 2 (1). A fiber having the following properties was obtained. This 'a' is made into a single fineness of 2.5 through the process of stretching, crimp and heat setting.
Denier polyester staple fiber (cut length 51
mm) was obtained. The cross-sectional shape of this fiber is d/Q=0.7
It was 5. This fiber was spun into yarn, and a woven fabric was made using a conventional weaving method. The water absorption performance of this fabric is initially determined by the diffusion area.
70mm'' and 69mm' after 10 washes,
The fabric had good water absorption performance with a water absorption rate of 38 seconds. When this fabric was treated with a fiber-binding bactericide and used as side material for a patient's futon and for a child's futon, it had a cotton-like texture and feel, and was highly sweat-absorbing. The futon side fabric was not mold-resistant. Also,
water'/&? After repeated use, there was almost no decrease in water absorption performance. Example 6 Ethylene oxide/propylene oxide (75:25) random copolymer with an average molecular weight of 15,000 and polybutylene terephthalate with intrinsic viscosity [η] = 0.72 4.0
%, sodium high alkyl sulfonate 2%, and hindered phenolic antioxidant 0.2% were added, mixed through a static mixer, and then spun at a spinning temperature of 270°C to obtain the flat fiber shown in Figure 1 (3). Obtained. This fiber was subjected to a process such as drawing to obtain a polyester stable fiber with a single denier of 2 denyl. This fiber was spun into yarn, and a woven fabric was made using a conventional weaving method. Regarding the water absorption performance of this fabric, the initial value of the diffusion area was 73 mm, and after 1?1alo cycles, it was 71.5 m, and the water absorption speed was 3.3 seconds, indicating that the fabric had good water absorption performance. When this fabric was treated with a fiber-binding disinfectant and used as sheets for patients and children, it had a cotton-like texture and feel, had good sweat absorption, and was not damp like cotton.
The sheets were mold-resistant. Further, even after repeated washing and repeated use, there was almost no decrease in water absorption performance. Example 7 A melt of polyethylene terephthalate with an intrinsic viscosity [η] = 0.68 was added with 4% polyquine ethylene glycol having an average molecular weight of 26,000, 2% sodium dodecylbenzenesulfonate, and 0 hindered phenolic antioxidant. .5% and 6% of mullite (hQto3/5102 series ceramic fine powder) were added, mixed through a static mixer, and then spun at a spinning temperature of 285°C to obtain the result shown in Figure 1 (
A fiber having the cross-sectional shape of 2) was obtained. The fibers were drawn in hot water at 75°C, applied with a fiber oil mainly composed of ethylene oxide adducts of phosphoric acid esters, mechanically crimped, heat-set and dried, resulting in a single yarn fineness of 2 denier. Polyester fibers were obtained. This fiber was made into staple fiber, spun into yarn, and the resulting woven fabric was dyed to make a nightwear material. When this nightwear material was sewn into a futon cover and a futon cover, it was found to have high moisture retention and sweat absorption properties (it is non-moist, comfortable to use, and can be used repeatedly after washing). There was no decrease in water absorption performance, and the change in dyeing showed that it was as good as regular polyester fibers.The water absorption performance of this fabric was determined by the initial diffusion area of 63m.
m', 61.9 mm' after 10 washes, water absorption speed of 3 seconds, and good water absorption performance. [Effects of the invention] The nightwear fabric made using the water-absorbing polyester fiber of the present invention has high water absorption and sweat absorption properties, does not lose its water absorption effect even after repeated washing, and can be dyed vividly. It is a fabric mainly made of polyester fibers with excellent color fastness, and it also has heat retention properties and can be used as a futon geodesic and futon cover.
Suitable for fabrics for nightwear such as nightwear, pajamas, sheets, and blankets.

[Brief explanation of drawings]

1 and 2 are schematic diagrams illustrating the fiber cross-sectional shape of the water-absorbing polyester fibers constituting the nightwear of the present invention, and FIG. 1 is a schematic diagram of the width cross-sectional shape. In the figure, L indicates the maximum length of the cross section, and W indicates the maximum width. Moreover, FIG. 2 is a schematic diagram of an irregular cross-sectional shape having a recessed part, where d indicates the shortest distance connecting both ends of the opening of the recessed part, and Q indicates the distance from the opening to the deepest part of the recessed part. . Figure ( ) (2) 2nd rEJ (I) (2) (3) (4) (5)

Claims (1)

[Claims] (1) Nightwear whose main constituent fibers are polyester fibers containing 0.2 to 10% by weight of polyoxyalkylene glycol and 0.1 to 5% by weight of a sulfonic acid metal salt derivative, each having an average molecular weight of at least 800.