JPS6233634A - Composite fabric - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention is applicable to sportswear for skiers and other athletes active in cold environments, or to fillings for bedding, cushions, etc. This relates to a composite faplitter.

[Conventional technology]

During the competition, the clothing worn by the competitors must be
Athletes engage in intense physical activity, which can have a negative impact on their performance.

7 The ivy of clothing adapts to the wearer's body to a greater or lesser extent and is interposed between the body and the outside air, so the inherent properties of the fabric allow it to effectively act as a heat exchanger or insulation layer. There is.

The present invention relates to clothing, bedding, bedding such as futons, padding for cushions, etc. for skiers and skiers who are active outdoors in cold, windy and rainy weather. It is something. The main performance requirements of such composite fabrics are to keep the user warm and dry, lightweight and not excessively bulky, especially when used as clothing. You must make sure that it does not interfere with your sports activities.

To some extent, these two requirements are mutually exclusive. In other words, warmth can usually be obtained by clothing filled with a lot of padding, but this type of clothing 1'!
- Not suitable for athletes in sports. Ideal clothing for athletes playing sports in cold environments is lightweight and low bulk. Such clothing does not restrict freedom of movement, provides thermal protection for the wearer, and keeps the wearer warm and dry.

It is also desirable for clothing to be effectively waterproof, so as to protect the wearer from the effects of rain or snow, and to trap and trap vapors emitted by body perspiration. It is desirable that the garment be vapor permeable so as not to give the wearer a sticky and uncomfortable feeling.

[Problem that the invention seeks to solve]

In extremely cold environments where the outside air temperature is much lower than 0°C, the difference between the outside air temperature and the human body temperature is quite large. Such a large temperature difference speeds up heat transfer between the body and the outside air.

Therefore, in order to provide sportswear that has effective thermal insulation, yet is lightweight and not bulky, it can act as a waterproof windbreaker in ski jackets and other clothing intended to be worn in cold climate conditions. However, it has been practiced to use a thin outer layer of nylon fabric or Voretex which is vapor permeable. This thin outer layer provides little warmth, so
Usually, this outer layer is lined with a thin nonwoven fabric made of hollow fibers, and this nonwoven fabric has the effect of trapping air and reducing heat loss due to convection.

For example, although the hollow fiber nonwoven layer or similar thereof that lines the outer layer of a ski jacket reduces convective heat loss from the body, heat absorbed from the body into the hollow fiber nonwoven layer This radiation, which is radiated from the layer and accounts for a significant portion of the heat loss, is not significantly impeded by the outer layer of the jacket. Therefore, although a typical ski jacket lined with a hollow fiber nonwoven layer is lightweight, very warm and not bulky, it does not fully meet the needs of skiers in extreme (cold weather) weather.

The effectiveness of ski jackets using hollow fiber nonwoven fabrics is insufficient. That is, when the wearer is active very strenuously and the body generates a lot of heat, the jacket warms up moderately, but when the skier goes up the slope on a ski lift or stops doing activities for other reasons, the amount of heat generated by the jacket increases. The thermal protection effect will be inadequate.

The present invention has been achieved in consideration of the matters described above.

That is, the present invention can be used to create sportswear that is suitable for cold weather, even in windy and wet weather, or can be used to create sportswear that does not cause heat loss even in cold weather. The purpose is to provide a composite fabric that can be used as bedding, cushions, etc., and is lightweight and not excessively bulky. Used to keep you comfortable.

[Means for solving problems]

formed by a thin core layer sandwiched between the inner and outer skin layers and formed by hollow fibers acting as a heat insulating layer laminated to both skin layers by needle punching;
Consisting of a laminate layer that is vapor permeable, the inner and outer surfaces of the inner skin layer and the inner surface of the outer skin layer are metallized to provide reflective properties, and the outer surface of the outer skin layer is colored black. The inner and outer skin layers further include an inner scrim of mesh fabric fixed to the inner and outer skin layers, thereby absorbing infrared radiation emitted from the surface of the body. Heat is reflected back to the body by the outer surface of the inner skin layer, convective heat from the body passes through the inner skin layer and is absorbed by the core layer, and heat from the black colored coating is also absorbed by the core layer; The infrared heat of the core layer is retained in the core layer by being re-reflected from the inner surface of the skin layer disposed on both sides of the core layer.

[For production]

The composite fabric consists of a vapor permeable laminate layer formed by a hollow fiber core layer that acts as an insulating blanket sandwiched between two inner and outer skin layers. A metallized layer is provided on both sides of the inner skin layer and on the inner surface of the outer skin layer to provide reflective properties, and the outer surface of the outer skin layer is colored black to absorb solar energy. When the garment is worn, radiant heat from the body is returned to the body by the reflective outer surface of the inner skin layer, while convective heat from the wearer's body passes by conduction through the inner skin layer of the laminate layer to the core layer. absorbed into. At the same time, solar heat absorbed by the black colored surface passes through the outer skin layer and is absorbed by the core layer. Infrared energy loss from the core layer is minimized by being internally reflected by the reflective interior surfaces of both skin layers.

〔Example〕

Ski jackets, windbreakers, coats and other outerwear and bedding suitable for cold climates using composite fabrics according to the invention.

You can make bedding such as futons, cushions, etc.

An example of implementation is shown in FIGS. 1 and 2. Reference numeral 1 denotes an inner mesh scrim, and this scrim 1 is preferably made of absorbent fibers such as polypropylene, nylon, or other synthetic fibers that have been crimped or otherwise processed to impart water absorption properties.

The composite fabric of the present invention comprises an inner skin layer 2. Outer skin layer 3. and a core layer 4, and has a vapor permeable laminate layer 6 having a structure in which the core layer 4 is sandwiched between both skin layers 1 and 2. The core layer 4 is formed of hollow synthetic fibers, preferably of synthetic plastic material, which has the effect of trapping air and reducing heat loss by convection. Although the core layer 4 is thin, it thus functions as an effective thermal blanket for its intended purpose.

The inner and outer skin layers 2, 3 may be porous non-woven fabrics made of polyester or other synthetic fibers, or thin film materials such as Mylar and Tyvek (0.05
~0.125 mm).

The inner and outer skin layers 2, 3 are laminated to the core layer 4 by needle bunching, and the laminate layer 5 formed by laminating in this manner is perforated and porous, through which steam can pass. Movement becomes possible. When normally impermeable films are used for the inner and outer skin layers 2 and 3, porosity is imparted by needle punching.

The inner surface 6 and the outer surface 7 of the inner skin layer 2 and the inner surface 8 of the outer skin layer 3 are metallized with aluminum or other reflective metals by vacuum deposition or other known metallization methods, such as sputtering, and are coated with molecular Apply a thick coating. The outer surface 9 of the outer skin layer 3 is provided with a flat black coating,
To efficiently absorb solar energy.

The structure of the outer protective mesh fabric, that is, the outer mesh scrim 10, may be the same as the inner mesh scrim 1. In other words, a fine nylon mesh may be used (i.e., the black color of the outer skin layer 3 of the laminate layer 5). It is disposed in contact with a colored outer surface 9. The outermost layer is provided with an outer fabric layer 11, made of a material such as nylon that is transparent to solar radiation and water vapor, yet is substantially waterproof. woven or otherwise made fabric.Vortex is a suitable material for this purpose.

When a contestant wears clothing using the composite 7-application fabric of the present invention, the inner mesh scrim 1 is in contact with the wearer's body 12, as shown in FIG. 2, and the outer fabric layer 11 is exposed to sunlight. It becomes a state where

Since the inner mesh scrim 1 has a mesh-like structure, the laminate layer 6 constituted by the core layer 3 is exposed, and the inner and outer skin layers 2.3 are exposed to radiant and convective heat, making it difficult to wear. exposed to sweat or water vapor transpiration from the surface of the person's body.

Since the laminate layer 6 is permeable, water vapor moves through the laminate layer 5 without being hindered.

The outer surface 7 of the inner skin layer 2 of the laminate layer 5 serves to return infrared energy emitted by the wearer, thereby reducing heat loss. However, some of the convective or conducted heat from the body is not reflected, but is instead conducted through the inner skin layer 2 to the core layer 4 and absorbed therein.

At the same time, the solar radiation that has passed through the outer fabric layer 11 and the outer mesh scrim 10 is incident on the black colored outer surface 9 of the outer skin layer 3 and heats this surface. The thermal energy thus generated passes through the outer skin layer 3 and is absorbed by the core layer 4.

In this way, the core layer 4 receives and takes away heat both from the wearer's body and from the sun to which the wearer is exposed. The infrared radiation emitted from the inner surface of the core layer 4 heated in this way is reflected back into the core layer 4 by the inner surface 6 of the inner skin layer 2, while the infrared radiation emitted from the outside of the core layer 4 The radiation is reflected back into the core layer 4 by the internally reflective surfaces of the outer skin layer 3 of the laminate layer 5.

This laminate layer 5 thus acts as a two-way heat transfer trap with respect to heat generated by the wearer and heat generated from solar energy. This effect is similar to the infinite reflection of a visible image between two mirrors placed opposite each other. Therefore, the trapped heat is reflected indefinitely between the two aluminum films facing each other. On the other hand, this laminate layer 5 does not act as a trap for the water vapor generated from the wearer's skin, and this water vapor passes through the outer fabric layer 11 and is released into the atmosphere, and the outer fabric layer 11 traps rain and water vapor. It only acts as a waterproof layer against snow.

Instead of an outer layer of Voretex fabric or similar waterproof fabric, a fabric made of acrylic or other fibers that transmit ultraviolet light but not infrared light may be used. Since the outer layer is separated from the outer skin layer 3 of the laminate layer 6 by the outer mesh scrim 1Q, the acrylic outer layer effectively exhibits the function of glass that exhibits a greenhouse effect, and the outer skin layer 3 is colored black. Reduces the loss of infrared energy from the outer surface 9.

Although preferred embodiments of the cold climate sports fabric according to the present invention have been illustrated and described above, various changes can be made without departing from the essential spirit of the invention.

〔effect〕

The inner and outer surfaces of the inner skin layer and the inner surface of the outer skin layer are metallized to give them reflective properties, and a black colored coating layer is provided on the outer surface of the outer skin layer to absorb solar energy. As a result, infrared radiation heat emitted from the body surface is reflected back to the body by the outer surface of the inner skin layer, and convective heat from the body passes through the inner skin layer and is absorbed by the core layer. , heat from the black-colored coating is also absorbed by this core layer, and infrared heat from the core layer is retained in the core layer by re-reflection from the inner surface of the skin layer disposed on both sides of the core layer. As such, the present composite 7 ablator functions as a two-way heat transfer trap for both convective heat dissipated from the wearer and heat from solar energy.

Therefore, even though the composite fabric according to the invention is relatively thin and not excessively bulky, it acts to keep body heat dissipation low, even under very harsh environmental conditions, allowing it to gain heat from the sun. It is very effective in cold environments as it keeps the wearer warm (and dry) and comfortable.

[Brief explanation of the drawing]

FIG. 1 is an exploded view of the various components forming the composite fabric of the present invention. FIG. 2 is an exploded view of the components of the fabric. 2...Inner skin layer, 3...Outer skin layer, 4...
・Core layer, 6... Laminate layer Patent applicant
Patent attorney for Anmin Kogyo Co., Ltd. Katsu Ohno Reiko Yasukano

Claims (1)

[Claims] It consists of a laminate layer formed by a thin core layer sandwiched between the inner and outer skin layers and laminated to both skin layers, which acts as a heat insulating layer, and the inner and outer surfaces of the inner skin layer and the inner surface of the outer skin layer. is metallized to give it reflective properties, and a black colored coating layer is provided on the outer surface of the outer skin layer to make it absorbent of solar energy. Infrared radiation heat emitted from the surface is reflected back to the body by the outer surface of the inner skin layer, and convective heat from the body passes through the inner skin layer and is absorbed by the core layer, which is also colored black. The heat from the coating is also absorbed by this core layer, and the infrared heat of the core layer is retained in the core layer by re-reflection from the inner surface of the skin layer disposed across the core layer. composite fabric.