JPS5935390Y2 - Insulation material with feathers - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a feather-containing heat insulating material suitable as a futon or cold protection material.

Down comforters and winter clothing have long been used as high-grade thermal insulation materials because of their excellent heat retention, tactile feel, and light weight.However, on the other hand, the terminal fibers of the feathers filled inside are extremely delicate. The problem is that the feathers tend to pull out from the side fabric (exterior fabric), and this tendency is more pronounced with feathers that have a high proportion of down.

In order to prevent the feathers from coming out, methods are used to prevent the side fabric from shifting and to reduce the size of the weave.Mechanical and chemical methods are used for this purpose.

The mechanical method involves heating and compressing with hot rolls, but the process is complicated and special equipment is required, resulting in high costs.

Also, as a chemical method, the side fabric is treated with resin, but this method tends to give the side fabric a hard texture.

The present invention provides a heat insulating material containing feathers that prevents feathers from being pulled out without relying on the above-mentioned method of preventing feathers from pulling out, and an example thereof is shown in the drawings. As such, the high melting point synthetic resin polymer component and about 2
A composite fiber in which a low melting point synthetic polymer having a melting point lower than 0°C is composited in a dorsal-ventral type or a sheath-core type, and in which the low melting point component is exposed continuously in the length direction at least in part of the fiber surface. A nonwoven fabric 1 containing about 30% or more and in which the contact portions of the constituent fibers are bonded by fusion of the low melting point component in the composite fiber is interposed between the knitted fabric side fabric 2 and the inner feathers 3. By the interposition of the nonwoven fabric 1, the fluff 3 is prevented from coming out through the side fabric 2.

The high melting point synthetic polymer component and the low melting point synthetic polymer component constituting the composite fibers may be selected from among polyolefins such as polypropylene and polyethylene, ethylene copolymers, polyesters such as polyethylene terephthalate, polyamides such as nylon 6, polyethylene, etc. Although they can be selected and used, the most preferable combination in terms of the heating temperature required to melt the low melting point component, the adhesiveness of the low melting point component, the price, etc. is one in which the high melting point component is polypropylene and the low melting point component is polypropylene. This is the case with polyethylene or ethylene-vinyl acetate copolymer.

Since the low melting point component in the conjugate fiber acts as a fusion bond between the fibers, it must constitute at least a part of the conjugate fiber and continuously exist on the surface in the length direction of the fiber. .

Such composite fibers are dorsal-ventral type in which two components are combined into a bimetallic shape using a known spinning method, and a low melting point component is used.
It can be easily obtained as a composite sheath-core type.

In order to melt only the low melting point components without affecting the high melting point components, it is important that the difference between the melting points of the low melting point components and the high melting point components is 20°C or more. be.

The single fiber fineness of the composite fibers described above is desirably 10 denier or less, and if it exceeds 10 denier, the texture of the resulting nonwoven fabric becomes rough and stiff.

The nonwoven fabric 1 may be formed of only the above composite fibers, or may be formed of the composite fibers and other fibers, such as natural fibers such as cotton, pulp, and hemp, recycled fibers such as rayon, semi-synthetic fibers such as acetate, or polyamide, polyacrylonitrile, etc.
It is formed by mixing it with synthetic fibers such as polyester.

In the case of this mixture, it goes without saying that the melting point of the fibers to be mixed must be about 20'C or more higher than the melting point of the low melting point component of the composite fiber.

It is necessary that the above-mentioned conjugate fibers be present in the nonwoven fabric in an amount of about 30% by weight or more, so that the bonding effect between the fibers due to the fusion of the low melting point components in the conjugate fibers can be made sufficient.

The nonwoven fabric can be formed using either wet or dry methods, and the weight per unit area of the nonwoven fabric is determined by considering the maintenance of durability and the texture of the side fabric as a heat insulating material for clothing, futons, etc. should be within the range of approximately Log/m2 to 100 g 7m2.

In addition, the low melting point component of the composite fibers in the nonwoven fabric is heated to a temperature above its melting point and below the melting point of the high melting point component, and preferably under mild pressure to melt the low melting point component and fuse the fibers together. Join.

The nonwoven fabric obtained in this way has a large bonding force because the fiber contact points, especially the intersection points, are fused and bonded.
It has the advantage of being extremely soft and breathable.

The above-mentioned non-woven fabric is laminated in advance on the inner surface of a knitted fabric side fabric, cut and sewn to form a bag shape, and feathers are blown into the bag-shaped side fabric using an air flow.Finally, a quilting finish is applied. wood is obtained.

Example warp is 40 count cotton, density is 83 threads/inch, weft is 40 cotton
Made of 5-ply satin fabric with a count and density of 127 pieces/inch.
Sewn side fabric (size 27.5cm long, 22.0cm wide)
) was filled with 60 g of feathers consisting of 40% by weight of down and 60% by weight of feathers to prepare a small futon.

A load plate weighing 1 kg (size: 25 cm long, 15 cm wide) was placed on this futon, and the futon was rubbed back and forth with the load plate at a speed of 45 times per minute. Plucking of feathers was allowed.

Next, a wet-laid nonwoven fabric is made of 100% dorsoventral composite fibers (monofilament fineness 3 denier) containing polypropylene as a high melting point component and polyethylene as a low melting point component, and the fiber contact points are bonded by melting the polyethylene bones. (Weight per unit area: 32 g/m2) A small futon of the same size as above was made by interposing the feather between the side material and the feathers, and the same test as above was repeated for 30 minutes. Only four feathers were exposed to the ground.

In this way, the feather-containing insulation material according to the present invention has a high melting point component and a low melting point component having a melting point lower than the high melting point component by about 20°C or more lower than the high melting point component in a dorsal-ventral type or sheath-core type, and the low melting point component is on the fiber surface. A nonwoven fabric containing about 30% or more of conjugate fibers, at least a portion of which is continuously exposed in the length direction, and in which the contact portions of the constituent fibers are bonded by fusion of the low melting point component in the conjugate fibers, is placed on the textile side. Since it is interposed between the ground and the inner feathers, the above-mentioned problem of the inner feathers coming out onto the side ground surface can be greatly improved.

Moreover, since the nonwoven fabric is thin and flexible, there is almost no roughening or stiffness of the texture of the heat insulating material due to the presence of the nonwoven fabric, and since the nonwoven fabric is bonded by the fusion of the synthetic polymer components in the composite fibers, it can be easily removed by dry cleaning. However, there is no elution of synthetic polymer components, and the effect of suppressing feather plucking can be maintained for a long period of time.

In addition, the nonwoven fabric has good air circulation, so it dissipates sweat during use without impairing the breathability of the down insulation material, and is hygienic, making it suitable as a material for comforters, cold-weather clothing, bedding, etc. suitable.

[Brief explanation of drawings] The drawing is a partial cross-section showing an embodiment of the present invention. 1 is nonwoven fabric, 2 is side fabric, and 3 is feather.

Claims (1)

[Scope of utility model registration request] A high melting point synthetic polymer component and a low melting point synthetic polymer having a melting point lower than the high melting point polymer component by about 20°C or more are combined in a dorsal-ventral type or a sheath-core type, and the low melting point component has at least a portion of the fiber surface in the longitudinal direction. A thin nonwoven fabric containing about 30% or more of continuously exposed composite fibers, and in which the contact portions of the constituent fibers are bonded by fusion of the low melting point component in the composite fibers, is combined with the knitted side fabric and the inner feathers. A heat insulating material containing feathers, characterized by being interposed between the layers.