JPH02255331A - Fibrous material having composite layer structure - Google Patents

Abstract

PURPOSE:To obtain fibrous material with excellent water absorptive and drying performance in combination and has a composite-layer structure by arranging only thermally melt-stuck synthetic fiber to the lower layer part made of nonwoven fabric and mutually mixing both the thermally melt-stuck synthetic fiber and water absorptive fiber in a dispersed state to the upper layer part constituting said nonwoven fabric. CONSTITUTION:Nonwoven fabric 1 is formed by superposing a mixed web consisting of the mixture of both cotton of acrylic ester fiber 4 and cotton of thermally melt-stuck polyester fiber 5 on the upper layer side of the web of thermally melt-stuck polyester fiber 3 and thermally melt-sticking it. A hydrophobic layer 1a consisting of only the polyester fiber 3 is arranged to the lower layer part constituting the nonwoven fabric 1, while a water absorptive layer 1b incorporating this acrylic ester fiber 4 is arranged to the upper layer part constituting the nonwoven fabric 1. This acrylic ester fiber 4 is known as a fiber extremely excellent in water absorptive properties. This fiber maintains efficient water absorptive performance and also has drying property.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention is a textile material that can be widely used, for example, in sports outerwear such as a windbreaker, or work clothes or raincoats for workers engaged in work that involves a lot of sweating. Specifically, the present invention relates to a multi-layered fiber material that has both water absorbency and drying properties.

[Conventional technology]

As is well known, the reality is that highly water-absorbent fibers such as acrylic ester fibers are hardly used in general textile products. The reason for this is that when trying to make textiles using superabsorbent fibers, the fibers are bundled and twisted into yarn, so the fibers stick together, and if the superabsorbent fibers absorb water and swell, the adhesion becomes even stronger. This increases the amount of water that is trapped inside the fabric, making it difficult for water to escape inside the fabric, leaving the skin feeling wet and sticky.
This is because it was extremely uncomfortable to wear and was considered unsuitable for general textile products.

[Problem to be solved by the invention]

Therefore, in view of the above circumstances, the inventors of the present invention have conducted research and experiments over many years in order to expand the use of general fiber products made of super absorbent fibers, and have found that they have been able to utilize the characteristics of super absorbent fibers while also having good drying performance. This was a successful development of a new textile material.

[Means to solve the problem]

The present invention, which has been successfully developed, is a nonwoven fabric formed by overlapping and heat-sealing a mixed web of water-absorbing fiber and heat-sealable synthetic fiber on top of a heat-sealable synthetic fiber web. and a synthetic fiber fabric that is partially bonded to the upper layer of the nonwoven fabric and treated with breathable water repellent treatment.

[For production]

In the fiber material according to the present invention, only heat-sealable synthetic fibers are arranged in the lower layer portion constituting the non-woven fabric, and heat-sealable synthetic fibers and water-absorbing fibers are mutually dispersed and mixed in the upper layer portion forming the non-woven fabric. Because the lower layer plays the role of a hydrophobic layer, water is efficiently absorbed by the water-absorbent fibers distributed in the upper layer. Water vapor passes through the synthetic fiber fabric that is bonded together and emanates to the outside. At this time, although the synthetic fiber fabric has been given a breathable and water-repellent finish, it does not interfere with the release of water vapor. Further, the hydrophobic layer fixes and protects the water-absorbing fibers contained in the water-absorbing layer.

〔Example〕

Embodiments of the present invention will be specifically described below with reference to the drawings.

As shown in FIGS. 1 and 2, the fiber material having a multilayer structure according to the present invention includes a nonwoven fabric 1 having a hydrophobic layer 1a and a water absorbing layer 1b, and a nonwoven fabric 1 that is bonded to the upper surface of the nonwoven fabric 1 and treated with an air-permeable water repellent treatment. It is composed of a polyester fiber fabric 2 which has been subjected to

The nonwoven fabric 1 is obtained by overlapping a mixed web of a mixture of acrylic acid ester fiber 4 and heat-fusible polyester fiber 5 on the upper layer side of a heat-fusible polyester fiber 3 web, and then heat-sealing this. A hydrophobic layer 1a made of only heat-sealed polyester fibers 3 is formed in the lower layer portion of the nonwoven fabric 1, and a hydrophobic layer 1a made of only heat-fused polyester fibers 3 is formed in the upper layer portion of the nonwoven fabric 1 (see FIGS. 2 and 3).
It is filled in in the figure. ) are respectively disposed (see FIGS. 2 and 3). Acrylic ester fiber 4 is known as a fiber with extremely excellent water absorbency, but in order for this fiber to maintain efficient water absorption performance and have drying performance, acrylic ester fiber 4 was dispersed and fixed. The heat-sealable polyester fiber 3 is used as a binding material for this fixation.
, 5 was used to make a nonwoven fabric. That is, the heat-fused polyester fibers 3 and 5 are fused and bonded to each other at the contact points by heat-treating the superimposed webs while lightly pressing them with rolls from above and below. At this time, the lower hydrophobic layer 1a protects the acrylic ester fibers 4 of the water absorption layer 1b from coming out.

The polyester fiber fabric 2 is made by dot printing a synthetic resin adhesive on the upper surface of the nonwoven fabric 1 and pasting them together by dot adhesion.Then, a water repellent is sprayed or foamed onto the surface of the fabric 2 and dried. It is heat treated to make it breathable and water repellent. The reason for point adhesion is to prevent the upper surface of the non-woven fabric 1 from being sealed by the adhesive and to allow moisture absorbed by the non-woven fabric 1 to be released as water vapor from the polyester fiber fabric 2. At this time, the fact that the breathable water-repellent finish has been applied does not hinder the release of water vapor.

It goes without saying that the present invention is not limited to the embodiments described above, and includes various modifications within the scope of the invention. For example, instead of the heat-fusible polyester fibers 3 and 5, other heat-fusible synthetic fibers such as polyethylene fibers or polypropylene fibers may be used (also, instead of the polyester fiber fabric 2, other synthetic fibers such as polyethylene fibers or polypropylene fibers may be used). A woven fabric of fibers, such as a woven fabric of nylon fibers, may also be used.Furthermore, as shown in FIG. The nonwoven fabric 1 and the synthetic fiber fabric 2 may be heat-sealed in a net shape by superimposing the three sheets with the body 6 interposed and subjecting them to heat treatment.

〔Effect of the invention〕

As explained above, according to the present invention, only the heat-sealable synthetic fibers serving as a hydrophobic layer are arranged in the lower layer portion constituting the nonwoven fabric, and the water absorbent layer containing dispersed water absorbent fibers is disposed in the upper layer portion constituting the nonwoven fabric. This allows the water absorption layer to efficiently absorb a large amount of water, and the absorbed water is further dispersed as water vapor through the upper layer of synthetic fiber fabric that has been treated with breathable water repellent treatment, resulting in excellent water absorption. It is possible to provide a fiber material with a multi-layer structure that has both high performance and drying performance, and also has a good appearance as the upper layer that appears on the surface is a woven fabric made of synthetic fibers. Therefore, if this fiber material is used for sports outerwear such as windbreakers and golf raincoats, work clothes for workers engaged in work that produces a lot of sweat, or general raincoats, etc.
You can enjoy a comfortable fit without feeling stuffy or sticky to your skin. Furthermore, since there is a hydrophobic layer in the lower layer of the non-woven fabric and the water-absorbing layer does not come in direct contact with the non-woven fabric, it not only does not give a wet feeling when worn, but also protects the water-absorbing fibers.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway perspective view showing an embodiment of the multi-layered fiber material according to the present invention, FIG. 2 is an enlarged view of section A in FIG. 1,
FIG. 3 is an enlarged view of section B in FIG. 1, and FIG. 4 is a perspective view for explaining the present invention in detail. 1... Non-woven fabric, 2... Synthetic fiber fabric, 3... Heat-fused polyester fiber (heat-fused synthetic fiber), 4... Acrylic acid ester fiber (water-absorbing fiber), 5... Heat Fusion-bonded polyester fiber (heat-fused synthetic fiber).

Claims (1)

[Claims] 1. A non-woven fabric ( 1), a synthetic fiber fabric (2) is laminated on top of the nonwoven fabric (1) by partial adhesion, and the fabric (2) is treated to be breathable and water repellent. A fiber material with a multilayer structure.