JPH09313323A - Water washable bedding - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a water washable bedding having a deodorizing characteristic by forming all of padding, side fabrics and sewing threads of blanks contg. polyester fibers, specifying the ratios of the fibers to the side fabrics and incorporating deodorant fibers into the padding. SOLUTION: The padding, side fabrics and sewing threads of the bedding are formed by using the polyester fibers which are less changed in the size, bulk, hand and appearance by the rubbing action at the time of washing with water, drying of the bedding, etc., and are high in drying rate. At this time, the fibers of cotton, nylon, etc., may be blended within a range of not impairing the quality of the padding objects. The ratio of the polyester fibers is specified to >=25wt.% and the ratio of using the polyester fibers is specified preferably to >=60wt.% and more preferably to 70 to 100wt.% of the weight over the entire part of the bedding. The deodorant fibers are incorporated into the padding. Free carboxyl groups are preferably incorporated at >=3.2×10<-4> g equiv./ g.fiber by graft polymerization as such fiber into the padding.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a comforter such as a comforter, a bed comforter, a skin comforter, a kotatsu comforter, and a cushion, and more particularly to a comforter that can be washed with water in a home washing machine.

[0002]

2. Description of the Related Art Conventionally, polyester-based synthetic fiber stuffed cotton has been used in many products for the above-mentioned purpose because of its excellent bulkiness, light weight and excellent heat retention. This polyester-based synthetic fiber stuffed cotton is made to have a three-dimensional crimp by composite spinning, asymmetric cooling, or the like to have excellent bulkiness, or, for example, as described in Japanese Patent Publication No. 6-51076, the forward direction. A combination of type three-dimensional crimped fibers and reversal type three-dimensional crimped fibers makes it excellent in bulkiness under no load or under load, has a deformed cross section such as hollow, and has a fineness, a fiber length or an oil agent. It is also seen that the bulkiness and texture have been improved by optimizing. further,
To give a soft texture by adding silicone resin,
For example, Japanese Examined Patent Publication No. 52-28426 and Japanese Utility Model No. 53-
Inventions described in Japanese Patent No. 5353, Japanese Patent Publication No. 34435/1992, and the like are found. However, under the present circumstances, futons using these stuffed cotton are hardly washed or are dry-cleaned in a laundry shop. I solved this problem, at least I could wash it with a home washing machine,
It is desired to develop futons and other futons having deodorant properties.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide a futon which can be washed with water and has deodorant properties.

[0004]

The present invention has the following constitution in order to solve the above problems.

That is, the wadding, the side cloth and the sewing thread are all futons containing polyester fibers, and the ratio of the polyester fibers to the side cloth is 25% by weight or more,
A futon that can be washed with water, characterized in that it contains deodorant fibers in the stuffed cotton and the side cloth and the stuffed cotton are bound together.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below with reference to the accompanying drawings.

Generally, fiber-stuffed objects such as comforters, beddings, skin comforters, kotatsu comforters, and cushions are mainly composed of stuffed cotton and side cloth. Therefore, when washed with water, there is a problem in that the dimensions are reduced, the texture becomes rough and hard, wrinkles are formed on the side ground, and the dye falls off to fade the appearance. In order to solve these problems, the futon of the present invention uses the water, the detergent, and the water flow at the time of washing each of the wadding, the side cloth, and the sewing thread even if they are washed with a household detergent at least in a household washing machine. The polyester fiber contains a polyester fiber which has a very small change in size, a change in bulk, a change in texture, and a change in appearance due to a rubbing action or the drying of a futon wet with water, and has a fast drying rate.

It is preferable that the stuffed cotton, the side cloth and the sewing thread of the futon be composed of 100% polyester fiber, but fibers other than polyester fiber such as cotton and nylon are mixed in the range that does not impair the quality of the stuffed object. It doesn't matter. In particular, it is preferable to mix a small amount of hygroscopic fibers such as cotton in the side fabric from the viewpoint of comfort and touch due to moisture absorption when using a futon. When using fibers that have hygroscopicity, etc., the proportion of polyester fibers used should be 25% by weight in order to reduce changes in size, bulk, texture and appearance, and to speed up the drying rate. It is important to set it to be at least%. The proportion of polyester fibers used is preferably 60% by weight or more, and more preferably 70 to 100% by weight, based on the entire futon.

From the viewpoint of reducing the above-mentioned changes in size, bulk, texture and appearance, the shrinkage factor of the futon after washing with water is 5
% Or less, more preferably 0 to 2%. If it exceeds 5%, wrinkles may occur on the surface of the futon, or the texture may become coarse and hard. The shrinkage ratio is measured by a method described later, and the higher value in the length direction and the width direction is preferably 5% or less. Furthermore, in order to improve the water drainage property and the drying property in the dehydration after washing with water, the quick-drying property described later is preferably 60% or more, and more preferably 65 to 100%. If it is less than 60%, the drying speed is slow, and it takes a long time to use it after washing, which is inconvenient, and at the same time, the state containing a large amount of water tends to cause a dimensional change of the futon.

In the futon of the present invention, it is important that the side cloth and the stuffed cotton are put together and quilted with a quilting sewing machine or bound with a Japanese-style sewing machine. The distance between quilting and binding is preferably 3 to 40 cm, more preferably 3 to 30 cm. If the length is less than 3 cm, the comfort of the futon may be impaired because the binding interval is too narrow, and the sewing thread may be hung when washed with water. May occur. Here, the binding intervals are the shortest and longest distances A _{1 to} Ai and B _{1 to} Bi between the quilting and binding and between the quilting and Japanese binding as shown in FIGS. 1 and 2. It is represented. The stitch pitch of the binding may be appropriately selected depending on the purpose and the purpose of the purpose.

The quilt of the futon is made of polyester fiber 10
It is preferably 0% by weight, but synthetic fibers other than polyester-based fibers such as nylon may be mixed in a range that does not impair the quality of the stuffed object. The fineness is 0.5 to 30 denier and the fiber length is 10 to 100 mm
Is preferably used. If it is thinner than 0.5 denier, the bulkiness of the aggregate required for the wadding tends to be low, and the resilience to compression, the recoverability of bulk, and the drainability after washing with water tend to be lowered. If it is thicker than 30 denier, the texture tends to be coarse and hard. Further, if the fiber length is shorter than 10 mm, the entanglement between the fibers is deteriorated and cotton breakage is likely to occur, and if it is longer than 100 mm, the fiber-opening property and the cotton-making property may be deteriorated.

The crimp may be appropriately selected depending on the intended use, but it improves bulkiness, softness, resilience to compression and recovery, or cotton-making property. Mechanical crimping is preferably applied in order to prevent entanglement, and it is more preferable that asymmetrical cooling treatment is performed at the time of yarn making of the cotton fiber, and each fiber is given a structural difference and three-dimensionally crimped. The number of crimps is preferably 3 to 10 peaks / 25 mm, and the crimp degree is preferably 5 to 30%.

The cross-sectional shape of the quilted cotton of the present invention is not limited to a round shape or a hollow shape, but a modified cross-section such as a polygonal shape or a hollow shape thereof can be used.

In addition to the above, a stuffed cotton to which various antioxidants, anti-coloring agents, light stabilizers, antistatic agents, etc. are added, if necessary, in addition to pigments such as titanium oxide and carbon black are used. be able to.

Next, the deodorant fiber contained in the stuffed cotton will be described. The deodorant fiber used in the present invention may be a fiber in which a deodorant component is kneaded into a polymer as described in JP-A-3-124809, or JP-A-62-6978. As described in Japanese Patent Laid-Open Publication No. JP-A No. 2003-242, it is also possible to use a fiber having a deodorant property imparted by a method of imparting a deodorant component by post-processing. The deodorant fiber can also be obtained by grafting a free acidic group by graft polymerization as a method of applying a deodorant component in a post-process. The acidic group in this method means a carboxyl group or a sulfonic acid group, and the content of the acidic group is 3. to impart durable deodorant performance.
It is preferably 2 × 10 ⁻⁴ gram equivalent / g fiber or more, more preferably 9.3 × 10 ⁻⁴ gram equivalent / g fiber or more. The terminal of the acidic group introduced by the graft polymerization is -COOH or -SO.
_{The one in the 3} H state is the most preferable, but it may be partially substituted with an alkali metal, an alkaline earth metal, a general metal, or an ionic organic substance such as a quaternary ammonium salt. It is preferable to distribute a large amount of acidic groups on the surface of the fiber by such graft polymerization because the malodors such as ammonia, hydrogen sulfide and mercaptans, which are said to be the source of malodor, can be efficiently absorbed.

[0016]

Next, the present invention will be described more specifically with reference to examples and comparative examples. The measuring methods of various characteristics described in the present invention are as follows.

(1) Shrinkage rate The futon is placed on a flat table and the width and length (l ₀ ) of the futon are measured with a ruler. Next, in a commercially available fully automatic washing machine, put a commercially available 0.2% aqueous solution of a neutral detergent in an amount of 4 to 6 times the weight of the futon, put the futon in the aqueous solution, wash for 12 minutes with a normal water stream, and then rinse. It was dehydrated for 2 minutes x 2 times for 6 minutes, placed on a flat wire mesh, and dried in the shade for 24 hours. After the washing and drying were repeated 10 times, the futon was placed on a flat surface, the width and length (l ₁ ) of the futon were measured with a ruler, and the shrinkage ratio was calculated by the following formula. (L ₀ and l ₁ are average values at three points in each of the width and the length direction of the futon, and the shrinkage rate is obtained separately for the width and the length direction of the futon) Shrinkage rate (%) = [(l ₀ −l ₁ ) / l ₀ ] × 100 (2) Quick drying The futon weight (W ₀ ) was measured after the futon was left in a room at 20 ° C. × 65% RH for 24 hours. Next, in a commercially available fully automatic washing machine, put a commercially available 0.2% aqueous solution of neutral detergent 4 to 6 times the weight of the futon, put the futon in the aqueous solution, wash for 12 minutes with a normal water stream, and then rinse. It was dehydrated twice for 2 minutes and twice for 6 minutes. Furthermore, the weight of the futon (W ₁ ) after the dewatering futon was spread on a flat metal net and left for 2 hours was measured, and the quick-drying property was determined by the following formula.

Quick-drying property (%) = [1-{(W ₁ -W ₀ ) /
W ₀ }] × 100 (3) Fineness It was measured according to the method of JIS L1015-7-51A.

(4) Average fiber length (cut length) JIS L1015A method (staple diagram method)
It measured according to.

(5) Number of crimps and degree of crimp The number of crimps and the degree of crimp are JIS L1015-7-12-
1 and the method of JIS L1015-7-12-2.

(6) Appearance of the futon (washing fastness, wrinkle), texture A commercially available fully automatic washing machine is used, and a 0.2% aqueous solution of a neutral detergent is put into the aqueous solution in an amount of 4 to 6 times the weight of the futon. After repeating the process of putting the futon in a normal water flow for 12 minutes and dehydrating for 6 minutes, the futon's appearance (washing fastness, wrinkle), texture and visual feeling before washing are judged by visual and tactile sensation. None (5th grade), almost no difference (4th grade), slightly different (3rd grade)
Grade), difference (2nd grade), and extremely different (1st grade).

(7) Deodorizing Method A: Ammonia gas detector tube method was used to open a glass column with a stuffing of a futon and fill it with 3 g of an arbitrary amount to 1000 p
A gas having an ammonia gas concentration of pm was passed at a flow rate of 3.3 cm / sec, and the breakthrough time and the amount of breakthrough adsorption were measured (the amount of breakthrough adsorption was measured after washing home water in order to exhibit deodorant properties). Is also preferably 12 mg / g or more).

Method B: 3 × 6 cm of about 5% ammonia water
After impregnating 0.25 ml of the filter paper of No. 1 into a glass container of 150 ml, at the same time, 0.5 g of the fiber obtained by opening the stuffing of the futon was put and sealed, and the odor change after left for 4 hours was sensory evaluated (no odor). It is rated in 4 levels: slightly odorous, odorous and strong odor).

However, the laundry is a commercially available household detergent 2 g / l,
It was washed at 40 ° C. for 5 minutes, washed with water, and dried under a condition of a greed ratio of 1:50.

(8) Fiber mixture ratio (fiber composition of the futon) The mixture ratio was measured according to the JIS L1030 fiber mixture ratio test method.

[Examples 1 to 3 and Comparative Examples 1 to 3] As the polyester fiber-stuffed cotton for the futon, chips of ordinary polyethylene terephthalate having a melting point of 255 ° C were used at a spinning temperature of 280 ° C and a take-up speed of 1350 m / min. Asymmetrically cooled undrawn yarn was spun at the exit of the spinneret. Furthermore, this undrawn yarn was drawn at a drawing bath temperature of 80 ° C., mechanical crimping was given by a crimper, cut to a cut length of 64 mm, and heat-treated at 175 ° C. to obtain a fineness of 6 denier and a crimp number of 4.6. / 25m
m, a crimping degree of 27.1%, and a hollow cotton cross-section having a hollow ratio of 30%.

Next, a normal nylon 6 chip (melting point 21
5 densities of 8 denier obtained by melt spinning and drawing
A circular hollow (18% hollow ratio) nylon 6 staple having a cut length of 51 mm was used. Furthermore, this staple was made to have an acrylic acid content of 19% owf, methacrylic acid content of 30% owf, ammonium persulfate of 1% owf, Superlite C (manufactured by Mitsubishi Gas Chemical Co., Inc.) of 3% owf, and a bath ratio of 1:14 from room temperature to 1 ° C. / The temperature was raised to 80 ° C. at a rate of minutes, and graft polymerization was performed at 80 ° C. for 60 minutes to obtain a deodorant fiber.

The graft ratio of methacrylic acid on 100% of this deodorant fiber was determined from the rate of increase in weight, and the amount of carboxyl groups was determined to be 3.27 × 10 ^-2 gram equivalent / gram.
Fiber. The cross section of the fiber was cut, dyed with a cationic dye, and examined for the distribution of carboxyl groups. As a result, it was confirmed that a large amount of carboxyl groups were present on the fiber surface. The deodorant property of 100% of this deodorant fiber was 34.4 mg / g before washing with a breakthrough adsorption amount of Method A and 31.3 after washing.
The mg / g, B method was odorless before and after washing, and showed extremely high deodorant properties. The breakthrough time before washing in method A is 4
It was 9 minutes.

The obtained stuffed cotton was carded by applying it to a roller card, and a card web was laminated with a molding machine to make cotton.

On the other hand, in Example 1 as a quilt side material for skin, warp yarns were made of polyethylene terephthalate 75 denier, 36
Weaving to a plain weave structure using a spun yarn in which 80% by weight of anti-pill polyester staple (2 denier, 51 mm) and 20% by weight of cotton were mixed in the temporary twisted yarn of the filament and the weft yarn, and the dyeing finish calendering was done in pale green. A woven fabric having a basis weight of about 100 g / m ² was used, and a sewing thread was a triple-strand yarn of high-strength type polyester filament yarn, which was used as a futon side. A polyester non-woven fabric is used as a product type and a handling label, 0.6 kg of the cotton stuffed cotton is stuffed in the side fabric, and the stitch is quilted with the sewing thread 6.5.
Co / in and quilting were set at intervals of about 15 cm in each of the width and length directions to give a comforter.

Table 1 shows the characteristics of the skin comforter obtained by changing only the mixing ratio of polyester and cotton in the side fabric, including the use of spun yarn for the side fabric warp and the weft yarn. Since the futons of Examples 1 to 3 have a particularly high proportion of polyester on the lateral side, the shrinkage ratio of the futon by washing with water, which is the aim of the present invention, is 2.5 to 4.8%, and the quick-drying property is 73 to 61%. The appearance was good and the texture was also good. In addition, the deodorant properties of the stuffed cotton of the futon were odorless and good.

On the other hand, in Comparative Example 1, although the stuffed cotton of the futon has a good deodorizing property, the lateral warp yarn is a mixed yarn of polyester and cotton, and the weft yarn is a spun yarn of 100% cotton. It was inferior in terms of shrinkage rate, quick-drying property, appearance and change in texture. In addition, in Comparative Example 2, although the deodorizing property of the quilted cotton of the futon is good, the warp yarns and the weft yarns of the side fabric are spun yarns of 100% cotton, and the shrinkage rate and the quick-drying property by washing with water and the change in the appearance and the texture are improved. It was inferior in terms of aspect. Further, Comparative Example 3 was good in terms of shrinkage rate and quick-drying property after washing with water and changes in appearance and texture, but was inferior in terms of deodorant property because no deodorant fiber was used as the stuffed cotton.

[0033]

[Table 1]

[0034]

According to the present invention, it is possible to obtain a futon which has a small change in appearance and a change in texture due to washing with water, has a high drying speed, and is excellent in deodorizing property.

[Brief description of drawings]

FIG. 1 is a schematic view showing an example of a washable futon of the present invention as a model.

FIG. 2 is a schematic view schematically showing another example of the futon which can be washed with water according to the present invention.

[Explanation of symbols]

1: quilting sewing thread 2: Japanese binding thread A _{1 to} Ai: binding interval B _{1 to} Bi: binding interval

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location D06M 14/14 D06M 14/14

Claims (8)

[Claims] 1. A quilt, a side cloth and a sewing thread each of which is a futon containing a polyester fiber, wherein the ratio of the polyester fiber to the side cloth is 25% by weight or more, and the stuffed cotton contains a deodorant fiber, and A futon that can be washed with water, which is characterized by the binding of the side cloth and the stuffed cotton. 2. The futon capable of being washed with water according to claim 1, wherein the shrinkage factor after washing with water is 5% or less and the quick-drying property is 60% or more. 3. The futon capable of being washed with water according to claim 1 or 2, wherein a binding interval between the side cloth and the stuffed cotton is 3 to 40 cm. 4. The fineness of the fibers constituting the batting is 0.5 to 3
The washable futon according to any one of claims 1 to 3, wherein the denier is 0 denier and the fiber length is 10 to 100 mm. 5. A short fiber having a three-dimensional crimp generated by asymmetrical cooling, and at least 3 fibers constituting the batting.
The washable futon according to any one of claims 1 to 4, which has a number of crimps of 25 mm / mount and a crimp degree of at least 5%. 6. The futon capable of being washed with water according to claim 1, wherein the side material is a mixture of polyester and cotton. 7. The washing with water according to claim 1, wherein the deodorant fiber contains free carboxyl groups by graft polymerization in an amount of 3.2 × 10 ⁻⁴ gram equivalent / g fiber or more. Futon possible. 8. The water-washable futon according to claim 1, wherein the ratio of the deodorant fiber to the stuffed cotton is 40% by weight or more.