JP2004166858A - Padding, and futon and cushion - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve cleanness and comfortableness. <P>SOLUTION: A padding (1) contains cellulosic fibers and the generation amount of anions is defined as 1,000 pieces/cc or more as the absolute value of a negative number by measurement by an Ebert's ion counter of parallel planar shapes per 2g. Also, the padding (2) contains the cellulosic fibers and a bacteriostatic activity value by JIS L 1902 is 2.2 or higher. Further, the padding (3) contains the cellulosic fibers, a moisture absorption rate at 30°C×90%RH of the cellulosic fibers is 18% or higher and a moisture absorption and release rate difference (ΔMR) is 9% or higher, where ΔMR(%)=MR<SB>2</SB>-MR<SB>1</SB>MR<SB>2</SB>is the moisture absorption rate at 30°C×90%RH and the MR<SB>1</SB>is the moisture absorption rate at 20°C×65%RH. In this case, the moisture absorption rate is based on the "moisture percentage" of JIS L 1074. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to batting.
[0002]
[Prior art]
In recent years, environmental issues such as global warming and acid rain have been widely taken up. Among them, especially in the daily life in urban areas, as a result of the increase of positive ions in the air and the decrease of negative ions due to exhaust gas etc., adverse effects such as oxidative rot, internal abnormalities and aging on our bodies, and environmental It is said that adverse effects have also occurred. Now, our body, environment, plants, and even water are weakly acidified, creating insufficient negative ions to reduce the weakly acidic human body and environment to neutral and alkaline states. This is the negative ion effect. Negative ions occur abundantly in forests, waterholes, and shorelines with a lot of water in nature, and have a healing effect that calms people's hearts. Tourmaline ore and bamboo charcoal have been found to generate such negative ions, but tourmaline ore is a substance that is also called tourmaline and has permanent spontaneous electric polarization. Generates negative ions. For example, an electret fiber in which finely divided tourmaline is fixed or contained in an organic fiber is disclosed (see Patent Document 1). However, originally, the negative ions emitted by tourmaline itself are weak, and when attaching finely divided particles to fibers, the amount of adhesion is as small as 3-4%, so that the negative ion effect cannot be expected so much. was there.
[0003]
In addition, as batting, products that generate several negative ions have been developed so far, but most of them only generate negative ions, and they are used as antibacterial to give a feeling of cleanliness and as futon. Heretofore, there has not been a batting that simultaneously has an appropriate moisture absorption / release property for feeling comfortable.
[0004]
On the other hand, although the yarn containing cellulose rayon fiber using bamboo as a raw material is disclosed in Patent Document 2 below, as an application example, only jackets, dresses, blouses, pants, coats, and underwear are described. No application to batting is disclosed. Also, there is no disclosure about negative ions.
[0005]
[Patent Document 1]
Japanese Patent Publication No. 6-104926
[Patent Document 2]
JP 2001-115347 A
[Problems to be solved by the invention]
The present invention aims to provide a batting excellent in comfort.
[0008]
[Means for Solving the Problems]
That is, the present invention is a batting containing a cellulosic fiber and having an amount of generation of negative ions of not less than 1000 / cc as an absolute value of a negative number per 2 g as measured by a parallel plate Ebelt ion counter (first). invention).
[0009]
Further, the present invention is a batting containing a cellulosic fiber and having a bacteriostatic activity value of 2.2 or more according to JIS L 1902 (second invention).
[0010]
Further, the present invention is a batting comprising a cellulosic fiber, wherein the cellulosic fiber has a moisture absorption at 30 ° C. × 90% RH of 18% or more and a difference in moisture absorption / desorption (ΔMR) of 9% or more (No. 3 invention).
However,
ΔMR (%) = MR ₂ −MR ₁
MR ₂ : moisture absorption at 30 ° C. × 90% RH.
MR ₁ : moisture absorption at 20 ° C. × 65% RH.
The moisture absorption rate conforms to “moisture content” of JIS L 1074.
[0011]
The present invention is also a futon including the batting of any of the first to third inventions.
[0012]
The present invention is a cushion including the batting of any of the first to third inventions.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
All batting of the present invention contains cellulosic fibers.
[0014]
In particular, it is preferable to use regenerated cellulose fibers.
[0015]
As a raw material of the regenerated cellulosic fiber, at least one selected from bamboo, wood pulp, linter pulp and cotton linter is preferable.
[0016]
Among them, regenerated cellulose fibers made of bamboo as a raw material (hereinafter also referred to as bamboo fibers) are particularly advantageous in that they generate the most negative ions. Furthermore, it has the highest hygroscopicity compared to other raw materials, and has antibacterial properties.
[0017]
For bamboo fiber, filament yarn or spun yarn can be produced using bamboo as a raw material by the same means as other regenerated cellulosic fibers. For example, in the case of the viscose method, bamboo is produced by reacting bamboo with alkali and diversion carbon, dissolving it in caustic soda as an alkali dentate, spinning, and coagulating and regenerating cellulose.
[0018]
Fibers made from bamboo can also be produced as semi-synthetic fibers such as a copper-ammonia method, a direct melting method, and acetate as other production methods.
[0019]
As a place of origin of bamboo, it is spread all over the world, mainly in Asia, but Chinese bamboo is particularly preferably used.
[0020]
As other cellulosic fibers that generate negative ions, natural fibers such as moon peach, kenaf, flax (linen), ramie (ramie), and fibers made of hemp are also preferably used. Also, wool, cashmere, alpaca, mohair, angora, and the like can be preferably used as animal fibers.
[0021]
The batting of the present invention also preferably has a form mixed with polyester fibers in order to obtain bulkiness. The mixing ratio is preferably cellulose fiber: polyester fiber = 1: 9 to 7: 3. When the content of the cellulosic fiber is 10% or more, sufficient generation of negative ions, moisture absorption / release properties, or antibacterial properties can be obtained. By setting the content of the cellulosic fiber to 70% or less, bulkiness as a batting can be obtained.
[0022]
The batting of the present invention can be obtained by laying raw cotton on a card and setting the obtained web to a predetermined basis weight with a cross wrapper.
[0023]
(1) First invention The batting of the present invention (first invention) can generate negative ions. The amount of generated negative ions is 1000 / cc or more as an absolute value of a negative number per 2 g of batting as measured by a parallel plate type Ebelt ion counter.
[0024]
The measurement of the amount of negative ions generated by the parallel plate type Ebelt ion counter is performed by flowing air containing ions between three parallel plates (parallel plate type) in the measuring apparatus. The distance between the outer plate and the center plate is 4 mm each, the two outer plates have a polarization potential (+ or-), and the polarization electric field is 1000 V / m. The center plate is a linear detection plate, charged to a constant potential. It is expressed by the number of ions per unit volume generated by a potential difference after a certain time (here, 10 seconds) has passed after air was flowed into this.
[0025]
When a negative ion is generated, a negative value is indicated, and when a positive ion is generated, a positive value is indicated. The sum (difference in absolute value) of a negative value and a positive value is obtained, and the absolute value of the negative number is defined as the number of negative ions generated.
[0026]
(2) Second invention The batting (second invention) of the present invention has a bacteriostatic activity value of 2.2 or more in an antibacterial test according to JIS L 1902 method. If it is less than 2.2, sufficient antibacterial and deodorant properties cannot be obtained.
[0027]
(3) Third invention The batting of the present invention (third invention) is characterized in that the bamboo fiber has a moisture absorption rate at 30 ° C. × 90% RH of 18% or more and a moisture absorption / desorption rate difference (ΔMR) of 9% or more. is there. By doing so, it is possible to obtain good moisture absorption / release properties even as batting, futons and cushions using the batting. ΔMR is defined as follows.
ΔMR (%) = MR ₂ −MR ₁
MR ₂ : moisture absorption at 30 ° C. × 90% RH.
MR ₁ : moisture absorption at 20 ° C. × 65% RH.
The moisture absorption rate conforms to “moisture content” of JIS L 1096.
[0028]
It can be said that the higher the ΔMR value, the more comfortable. Generally, the ΔMR of polyester is said to be 0%, 2% for nylon, 4% for cotton, and 6% for wool.
[0029]
After laminating the batting of the present invention, the batting can be packed into the side ground to form a futon or cushion.
[0030]
【Example】
Hereinafter, the present invention will be described in more detail with reference to Examples, but the present invention is not limited to these Examples.
[0031]
<Evaluation method>
Quality evaluation in the examples was performed according to the following method.
[0032]
[Ion generation amount]
Measuring device: AIR ION COUNTER IC-1000 (manufactured by Alpha LAB (USA))
Measurement conditions: room temperature 20 ± 1 ° C., humidity 50 ± 3%, room size 3 m × 5 m × 5 m, suction volume 12 L / min.
T / C Broad 65/35 Woven Fabric (Shikibo Co., Ltd., # M2000, Vertical 45'S (cotton count), Horizontal 45'S (cotton count), width 115cm, density Vertical: 136 pieces / 2.54 cm, horizontal: 72 pieces / 2.54 cm, basis weight 114 g / cm ² ), sewn into a bag of 5 cm × 15 cm, put 2 g of batting in this and wrap it The sample was beaten with both hands simultaneously for 10 seconds at a sample vibration cycle of 3 times / second so as to sink to about half the thickness of the futon.
The sum of the negative value and the positive value of the measured value (pieces / cc) of the ion generation amount after 10 seconds of tapping is determined, the absolute value of the negative number is regarded as the negative ion generation amount, and 1000 ions / cc or more are passed. And
[0033]
[Hygroscopicity (ΔMR)]
ΔMR (%) = MR ₂ −MR ₁
MR ₁ : Moisture absorption (%) when left in a 20 ° C. × 65% RH atmosphere for 24 hours from a completely dry state.
MR ₂ : Moisture absorption (%) when allowed to stand for 24 hours in a 30 ° C. × 90% RH atmosphere from a completely dry state.
The moisture absorption rate conformed to “moisture content” of JIS L 1074.
[0034]
[Antibacterial]
The measurement was performed according to JIS L1902. The unified test method was adopted as the evaluation method, and the test cells used were Staphylococcus aureus clinical isolates. The test method was as follows: the test bacteria were poured into a sterilized test cloth, the number of viable bacteria after culturing for 18 hours was counted, and the number of bacteria relative to the number of cultured bacteria was determined.
[0035]
Under the condition of log (B / A)> 1.5, log (B / C) was regarded as a bacteriostatic activity value, and 2.2 or more was regarded as acceptable. Here, A represents the number of bacteria dispersed and collected immediately after inoculation on the nylon cloth, B represents the number of bacteria dispersed and collected after culturing on the nylon cloth for 18 hours, and C represents the number of bacteria dispersed and collected after culturing the sample for 18 hours.
[0036]
(Example 1)
Using bamboo produced in China as a raw material, regenerated cellulose-based short fibers (single yarn fineness: 3.3 dtex, fiber length: 51 mm) were produced by a viscose method. The moisture absorption of the bamboo fiber at 30 ° C. × 90% RH was 20.1%, and ΔMR was 9.2%.
[0037]
The bamboo fiber was mixed with 50% by weight and polyethylene terephthalate fiber (single yarn fineness: 6.7 dtex, fiber length: 51 mm) by 50% by weight to prepare a batting. The amount of anions generated in the batting was 2500 negative / cc as an absolute value of a negative number, and the bacteriostatic activity value was 3.0.
[0038]
Using the batting and the side lining of 100% polyethylene terephthalate plain woven fabric, the batting was sewn into a bag having a size of 200 cm × 150 cm to form a futon. This futon had a high relaxing effect due to the generation of negative ions, and was excellent in cleanliness.
[0039]
(Example 2)
Using the same batting as that made in Example 1 and a woven fabric made of 50% polyethylene terephthalate and 50% cotton by weight and sewn in a bag shape with a size of 50 cm × 50 cm, a cushion was formed. Produced.
[0040]
This cushion had a high relaxing effect due to the generation of negative ions and was excellent in cleanliness.
[0041]
(Comparative Example 1)
A cotton fiber (single yarn fineness: 3.3 dtex, fiber length: 51 mm) as a natural cellulosic fiber was prepared. The moisture absorption of the cotton fiber at 30 ° C. × 90% RH was 7.8%, and ΔMR was 4.0%.
[0042]
50% by weight of the cotton fiber and 50% by weight of polyethylene terephthalate fiber (single yarn fineness: 6.7 dtex, fiber length: 51 mm) were mixed to prepare a batting. The amount of ions generated from the batting was 150 / cc as a positive number, and the bacteriostatic activity value was 0.3.
[0043]
A futon was prepared using the batting and the same side material as used in Example 1. Positive ions were generated more frequently than negative ions, resulting in poor sleep comfort and poor cleanliness.
[0044]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, batting, a comforter, and a cushion excellent in comfort are obtained.

Claims (9)

A batting containing cellulosic fibers, wherein the amount of generated negative ions per 2 g is not less than 1000 / cc as a negative absolute value as measured by a parallel plate type Ebelt ion counter. Filling containing cellulosic fibers and having a bacteriostatic activity value of 2.2 or more according to JIS L 1902. A batting comprising a cellulosic fiber, wherein the cellulosic fiber has a moisture absorption at 30 ° C. × 90% RH of 18% or more and a moisture absorption / desorption rate difference (ΔMR) of 9% or more.
However,
ΔMR (%) = MR ₂ −MR ₁
MR ₂ : moisture absorption at 30 ° C. × 90% RH.
MR ₁ : moisture absorption at 20 ° C. × 65% RH.
The moisture absorption rate conforms to “Moisture percentage” of JIS L 1074. The batting according to any one of claims 1 to 3, wherein the cellulosic fiber comprises a regenerated cellulose fiber. The batting according to claim 4, wherein the raw material of the regenerated cellulose fiber is at least one selected from bamboo, wood pulp, linter pulp and cotton linter. The batting according to claim 5, wherein the raw material of the regenerated cellulose fiber is bamboo. The batting according to any one of claims 1 to 6, further comprising a polyester fiber. A futon comprising the batting according to any one of claims 1 to 7. A cushion comprising the batting according to any one of claims 1 to 7.