JP4681986B2 - Down-proof fabric - Google Patents

Description

  The present invention relates to a down-proof fabric mainly used as a side of a product formed by stuffing feathers or batting such as a futon, a jacket for cold protection, and a sleeping bag.

In products that are filled with fillings such as feathers and padding, such as futons, winter jackets, sleeping bags, etc., the fabric used as the side fabric has the ability to prevent the feathers and fillings from slipping out (hereinafter abbreviated as “down-proof”). ) And air permeability. Methods for achieving both fabric down-proofing and breathability include increasing the fabric weaving density to reduce the gap between yarns, and compressing the fibers by calendering to reduce the gap between yarns. There are known a method of reducing the size, a method of combining a film having continuous fine pores and a fabric by full-surface coating or lamination (see Patent Documents 1 to 3).
Japanese Patent Laid-Open No. 3-241078 Japanese Patent Laid-Open No. 5-176732 JP 2003-251088 A

  However, the method of reducing the gap between yarns by increasing the density of the woven fabric to prevent the fabric from coming down is likely to increase the weight of the fabric or make the texture harder. Even if the proof property is obtained, the gap between the yarns increases with time due to the application of friction, bending, expansion and contraction in daily use such as folding and washing, and the down proof property tends to be lowered.

  In addition, the method of calendering the fabric and heat compressing the fibers to reduce the gaps between the yarns and prevent the yarn from coming down can suppress the movement of the fibers without extremely increasing the density of the woven fabric. The gap of the is difficult to expand. However, the texture is likely to be hard, and, similarly to the above, when a force such as friction, bending, and expansion / contraction is applied, the gap between the yarns is widened and the down-proof property is likely to be significantly reduced.

  Therefore, in these methods, since it is necessary to design the initial performance in anticipation of a decrease in down-proof property, the fabric density / calendar conditions in the initial state are made higher than necessary and the conditions for strong calendering are changed to the current conditions. It is. As a result, the texture and breathability of the fabric is greatly impaired. If the breathability of the fabric is low, it is easy to swell in the shape of a balloon when it is made into a futon or jacket, it is difficult to fit along the body, it is not comfortable to wear, it is not cold resistant, and it is difficult to fold, so it becomes a product that lacks storage properties is there.

  On the other hand, in the method of combining a membrane having continuous micropores with a fabric, the micropores are too small to obtain air permeability, or because the microporous membrane is structurally fragile, It is necessary to provide a protective layer separately, which causes a problem that the fabric becomes thick and the original texture of the fabric is impaired or the fabric becomes heavy.

  The present invention has been made in view of the above, and provides a down-proof fabric that is excellent not only in initial down-proof property but also in which deterioration with time is suppressed and excellent in lightness, texture and breathability. With the goal.

  As a result of diligent study, the present inventor has found that the gap between the yarns of the fabric is wider than the feather root diameter from the beginning, or when some force is applied to the fabric and the gap between the threads spreads beyond the feather root diameter. Paying attention to the point that occurs, if the gap between the yarns is narrowed by the polymer compound and the gap is fixed and the gap is kept smaller than the maximum value of the thickness of the filling such as the feather root length, the down-proof property It came to the idea that the decline could be suppressed.

That down proof resistant fabrics of the present invention, there is provided a down-proof resistant fabric having a function of preventing the escape of filling of feathers and cotton, etc., and a woven fabric, one side of the woven fabric front surface coverage 50-95 %, And the polymer compound penetrates between the yarns constituting the woven fabric, and the penetrated polymer compound is cured between the yarns to form the polymer compound. The gap between the yarns is reduced and the gap between the yarns is fixed to prevent the gap between the yarns from spreading. The polymer compound is a moisture-permeable polyurethane having a continuous fine pore structure, and the air permeability as a fabric Is 1 cc / cm ² / s or more according to the JIS L 1096 A method , and the moisture permeability is 10,000 g / m ² · 24 hr or more according to the JIS L 1099 B-2 method .

  According to the present invention, even in a fabric having a lower density than conventional down-proof fabrics, without impairing the original thickness and texture of the fabric, it is lightweight and has good air permeability and excellent down-proof property, washing and friction, It is possible to provide a down-proofing fabric with less deterioration in down-proofing due to bending, shrinkage and the like.

  Therefore, it is possible to commercialize a comforter and clothing with batting which is more comfortable than the conventional one. In addition, a low-density fabric that has been difficult to use because of its low down-proof property can be used as a base material. In general, a low-density fabric is lighter and softer than a high-density fabric, and the production of the fabric is easy. Therefore, according to the present invention, it is possible to provide a product that is cheaper and has a better texture than before.

  In the fabric of the present invention, at least one side of the fabric is partially covered with a polymer compound. As a result, the gap between the yarns is reduced, the gap between the yarns is fixed, and the gap between the yarns is prevented from widening over time. However, if both the front and back surfaces are coated with a polymer compound, the touch tends to deteriorate. Therefore, depending on the application, usually only one side needs to be coated with the polymer compound.

  The surface coverage on the polymer compound-coated surface is 50% to 95%. When the coverage is greater than 95%, the downproof property is excellent, but the air permeability and moisture permeability are remarkably lowered, which is not preferable. On the other hand, when the coverage with the polymer compound is less than 50%, the air permeability is further improved, but sufficient down-proof property cannot be obtained. Examples of the method of partially covering the fabric with the polymer compound include a floating knife coating method, a gravure method, and a spray method, but are not limited thereto.

  In order to fix the space between the yarns with the polymer compound in the present invention, it is preferable that the polymer compound penetrates between the fibers so as not to pass to the back surface. Examples of the method for suppressing the permeation of the polymer compound into the fabric include a method of water-repellent treatment of the fabric and a method of water padding, but are not limited thereto.

  In the present invention, the adhesion amount of the polymer compound is preferably 1% by weight to 20% by weight with respect to the weight of the substrate. Although it depends on the use of the fabric, if it exceeds 20% by weight, the fabric is heavy and the texture becomes hard, which is usually not preferred.

  Examples of the polymer compound used in the present invention include polyurethane resins, acrylic resins, vinyl chloride resins, fluorine resins, polyethylene resins, polyamide resins and the like, and are not particularly limited. However, a polymer compound containing a polyurethane resin as a main component is preferable because it is flexible and does not impair the texture of the fabric when processed. Among these, carbonate polyurethane resins that are less susceptible to ultraviolet deterioration due to sun-drying are particularly preferred examples.

The fabric of the present invention preferably has an air permeability of 1 cc / cm ² / s or more. If the air permeability is lower than this, when it is made into a futon or jacket, it becomes easy to swell in a balloon shape, and the feeling of use such as comfort is bad, and a gap is easily formed between the product and the body, and it is lacking in cold protection. . Further, it is not preferable because the product is difficult to compress when folded or stored, or it is difficult to restore the original state from the compressed state.

  Since the fabric of the present invention is not a full surface coating, even if the polymer compound itself does not have moisture permeability, the fabric has a certain level of moisture permeability. Therefore, a more comfortable fabric can be obtained. As a method for imparting moisture permeability to the polymer compound, a method using a hydrophilic polymer or a method using a polymer having a continuous fine pore structure may be considered, and these may be used in combination.

  Hereinafter, the present invention will be described in detail by way of examples.

[Example 1]
The mixed solution of the following formulation was stirred with a mixer and defoamed, and the warp / weft 45th blend yarn (65% polyester / 35% cotton) with a weaving density of 140 warps / inch, A gravure coating was applied to one side of a base fabric of 70 horizontal / inch with a gravure roll having an engraved area of 80%. This was immersed in 30 ° C. water for 5 minutes to solidify, washed with warm water at 50 ° C., and then dried with hot air at 120 ° C. for 5 minutes to obtain the fabric of the present invention.

Polyurethane resin (Dainippon Ink Co., Ltd., trade name Krisbon MP-120) 100 parts Crosslinking agent (Dainippon Ink Co., Ltd., trade name Krisbon CL-10) 1 part Solvent (DMF) 70 parts

[Example 2]
The cloth of the present invention was obtained by processing under the same conditions as in Example 1 except that the mixed liquid having the following moisture-permeable formulation was used.

Polyurethane resin (Dainippon Ink Co., Ltd., trade name: Chrisbon MP-829) 100 parts Colorant (Dirac L-6626) 5 parts Crosslinking agent (Dainippon Ink Co., Ltd., trade name: Crisbon CL-10) 1 part Film-forming aid (Dainippon Ink Co., Ltd., trade name: Crisbon Assister SD-17B) 5 parts Solvent (DMF) 30 parts

[Comparative Example 1]
The adjustment liquid of the formulation of Example 1 is a knife on one side of a base fabric having a warp / weft 45th blend yarn (65% polyester / 35% cotton) and a weaving density of 140 pieces / inch and width 70 pieces / inch. After coating with a coating thickness of 0.1 mm by a coating method, it was immersed in 30 ° C. water for 5 minutes to solidify, washed with warm water at 50 ° C., and then dried with hot air at 120 ° C. for 5 minutes.

[Comparative Example 2]
Both warp and weft yarns are 45th-mixed yarn (65% polyester / 35% cotton) and have a weaving density of 140 yarns / inch and width 70 yarns / inch. Roll temperature is 170 ° C and roll pressure is 30 kg / cm ² I made a calendar.

[Comparative Example 3]
A base fabric having 84d polyester for both warps and wefts, a weave density of 190 pieces / inch, and a width of 100 pieces / inch was calendered under conditions of a roll temperature of 150 ° C. and a roll pressure of 30 kg / cm ² .

  The surface coverage, mass, air permeability, moisture permeability, texture, and down-proof property of the fabric obtained as described above were measured and evaluated. The results are shown in Table 1.

  In addition, as a measurement / evaluation method, mass: mass per JIS L 1096 unit area, thickness: JIS L 1096 thickness, air permeability: JIS L 1096 air permeability A method (Fragile method), moisture permeability: JIS L 1099 It conformed to another method (method B-2) of the potassium acetate method.

  The surface coverage was measured by a digital microscope (VHX-200 / 100F manufactured by Keyence Corporation) and measured by an automatic area measurement function.

The texture was subjected to a two-step sensory evaluation based on the following criteria based on tactile sensation.
○: Soft, ×: Hard

As for the down-proof property, a 12 cm × 12 cm miniature duvet filled with 5 g of feathers was produced from the fabric obtained by the above processing (sealing was sealed with resin), and this sample was treated with JIS L 1096 pilling. Based on the test A method, put it in an ICI tester with three hard rubber balls (diameter 4cm, weight 45g), and run 3 sets repeatedly at 60rpm for 1 hour. (Number) was examined. Further, the fabrics washed 10 times based on JIS L 0217-103 were similarly evaluated for the down-proof property after one set. The evaluation criteria for the down-proof property are as follows.
Grade 5: 3 or less Grade 4: 4 to 10 Grade 3: 11 to 30 Grade 2: 31 to 50 Grade 1: 51 or more

  Comparing Examples 1 and 2 with Comparative Example 3, it can be seen that the product of the present invention has less deterioration in down-proof property despite its higher air permeability than high-density fabrics. The product of the present invention was light in weight and good in texture.

  In addition, when Examples 1 and 2 are compared with Comparative Example 2, the product of the present invention is superior not only in the initial down-proof property but also in the durability against the decrease in the down-proof property, compared to the fabric obtained by calendering the fabric. Results were obtained.

  Further, when Examples 1 and 2 were compared with Comparative Example 1, the product of the present invention was much better in breathability and moisture permeability than the fabric coated on the entire surface (surface coverage with resin was 100%).

  Furthermore, in Example 2 using the polymer compound having moisture permeability, it was confirmed that better moisture permeability was obtained than in Example 1 using the polymer compound having no moisture permeability.

The down-proof fabric of the present invention is suitably used for side fabrics such as futons and sleeping bags, or clothing such as cold protection jackets.

Claims (1)

A down-proof fabric having a function to prevent the filling of fillings such as feathers and batting,
And woven fabric, made on one side of the fabric and a polymer compound partially coated as the front surface coverage is 50% to 95%,
The polymer compound penetrates between the yarns constituting the woven fabric, and the penetrated polymer compound is cured between the yarns to reduce the gaps between the yarns and to fix the yarns between the yarns. Prevents the gap between the threads from spreading ,
The polymer compound is a moisture-permeable polyurethane having a continuous microporous structure,
The air permeability as a fabric is 1 cc / cm ² / s or more according to JIS L 1096 A method , and the moisture permeability is 10,000 g / m ² · 24 hr or more according to JIS L 1099 B-2 method. Down-proof fabric.