JPS60956A - Anti-contamination processing method of protective sheet-shaped article for construction work - 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 The present invention provides protection against soil, dust, mineral oil, sewage, etc. of synthetic fibers covered with vinyl chloride wood used in protective sheets for construction work, or fabrics woven from such synthetic fibers. The present invention relates to an antifouling processing method aimed at preventing various types of contamination.

Conventionally, synthetic fibers such as nylon and polyester fibers were immersed in a vinyl chloride resin molten bath to coat the surface of the synthetic fibers with vinyl chloride and vinyl resin. dipping type (DiPpiny)
Since the cross-section of ``type (type) fiber'' is uneven, it is easy for dirt, dust, etc. to adhere to it, and once it is attached, it is difficult to fall off. Therefore, dipping type fibers or fabrics are easily contaminated, and furthermore, such fibers or fabrics are easily contaminated during use. The plasticizer in the coated PVC resin migrates to the surface of the fiber or fabric upon exposure to sunlight, especially ultraviolet light, and thus
Another drawback is that the synthetic resin layer on the surface of the fabric is viscous, making it easy for dust to adhere to it.

In addition, synthetic resin fiber bundles are first treated with a powdery thermoplastic compound (sealing resin) that is solid at room temperature, and then processed with an extruder (Extruder).
vinyl chloride resin-coated synthetic fibers manufactured by heating and melting the thermoplastic resin adhered to the surface of the synthetic fiber bundle to uniformly adhere and coat the surface of the synthetic fiber bundle with molten vinyl chloride resin [ This is called extruder W- (Extruder type) fiber.

] Or the vinyl chloride resin-coated fabric manufactured by weaving this has a fiber cross-sectional shape closer to a circular shape than the above-mentioned dipping type fiber, and it is relatively easy to absorb dust, etc., and even dust that has adhered once falls off. However, as mentioned above, the plasticizer of the vinyl chloride resin is transferred to the surface of the extruder type fiber by heat, light, especially ultraviolet rays, and the disadvantage is that it is easily contaminated by dust etc. as in the case of dipping type fibers or textiles5. In the past, the washing process was extremely difficult due to the large amount of contaminated synthetic cotton (oil-coated woven cloth) used and the heavy contamination, so washing ZM required significantly more manpower and cost. It was necessary to do this.

In view of the above, the present inventor has developed a method for preventing dirt, dust, etc. from adhering to the above-mentioned dipping type or extruder type fibers used in construction work protection sheets or fabrics obtained by weaving the same. As a result of extensive research, we have developed highly non-viscous fluorine-based, melamine-based, or silicone products with the aim of reducing adhesion as much as possible, reducing the number of washings, and making it easier for dirt, dust, etc. to fall off during washing. By using an aqueous suspension of a synthetic resin of the same type, the objective was achieved and the present invention was completed.

Examples of the fluorine-based synthetic resin used in the present invention include perfluoroalkyl group-containing acrylic copolymer or perfluoroalkyl group-containing urethane adduct; examples of the melamine-based synthetic resin include hexamethylol melamine resin; An aqueous suspension of methyl/-hydrodiene polysiloformic acid is suitable as a catalyst, and contains a dispersion of a fatty acid zinc salt used as a catalyst. The fabric or dipping type fiber obtained by weaving or the fabric obtained by weaving the dipping type fiber is treated with an aqueous suspension of the above synthetic resin at 1 to 20 weights = d/) and dried. This provides a method for antifouling treatment of vinyl chloride resin-coated fibers or fabrics, and in the case of fabrics, heat treatment may be applied to prevent fabrics from shifting before antifouling treatment. It may be necessary to fuse the eyes.

In the present invention, the powdery thermoplastic synthetic resin adhesive which is solid at room temperature and is used to produce the extruder-type fiber for bending is as follows:
[thermoplastic synthesis in powder form at room temperature] (Any fat can be used, such as polystyrene, polyvinyl chloride, polyvinyl alcohol, polyethylene, polypropylene, etc., but thermoplastic copolymerized polyesters are mainly used.) Hot melt adhesive with a melting point of 115~tz
5”c, t3s~1501C or 160~175”C
'% Powderness Compound stable at room temperature with a particle size of 1 to 200μ,
For example, it is preferable to use the product names PES, -120F, -140F, or -170p (manufactured by Toagosei Kagaku Co., Ltd.).

Both the dipping type fibers, extruder type fibers, and fabrics woven from them obtained by the present invention have low adhesion to contaminants such as dirt and dust, and have excellent antifouling effects. The synthetic resin used in the present invention, which has the ability to prevent migration to the coated fiber surface, uniformly adheres and coats the fiber surface, and the cross-section of the fiber is nearly circular; (a) dirt, dust, etc. 0(0) is difficult to adhere to, making it durable for long-term use as a protective sheet at construction sites.The plasticizer in the coated vinyl chloride resin is prevented from transferring to the fiber surface by heat and light, and the fiber K(0)
1° The surface does not become viscous, making it difficult for dirt, dust, etc. to accumulate on the surface of the fabric.

(c) Furthermore, even if dirt, dust, etc. adhere to the surface of the fabric, it is easily removed by washing, making washing simple and easy.

There are many advantages.

Next, the present invention will be explained by examples.

Example 1 A nylon untwisted fiber bundle with 288 single yarns of tgqof=--le was supplied to a powdered thermoplastic synthetic resin adhesive at room temperature to adhere the powdered thermoplastic synthetic resin adhesive to the surface of the nylon fiber bundle. The nylon fiber bundle is heated and supplied to an extruder to uniformly weld the adhesive onto the surface of the nylon fiber bundle, and then immersed in a molten vinyl chloride resin bath to produce an extruder-type fiber. An antifouling treatment produced by passing a perfluoroalkyl group-containing acrylic copolymer through an aqueous suspension bath of a synthetic resin for antifouling treatment and further coating the surface of the coated vinyl chloride resin with the above synthetic resin for antifouling treatment. The fibers were used to weave a fabric with a number of battings of 8×8/inch.

A staining test was conducted using this fabric. This is designated as sample 1.

In this case, PVA was used as the thermoplastic synthetic resin adhesive for the thermoplastic synthetic resin bath, but polystyrene,
Polyethylene resin powder or the above pES-120F
can be used as well.

Example 2 In Example 1, the same nylon untwisted fiber bundle as in Example 1 was used as the synthetic resin-coated fiber fabric used as the raw material, and the dipped type fiber was immediately immersed in a vinyl chloride melt bath. The fibers treated with an aqueous suspension of 10% by weight hexamethylolmelamine resin were woven into a fabric with the same number of stitches as in Example 1, and a staining test was conducted in the same manner. is Document 2.

Example 3 In exactly the same manner as in Example 1, 1 was prepared as a synthetic resin for antifouling treatment.
A contamination test was conducted using a fabric manufactured with the only change being the use of an aqueous suspension of 0% by weight methylhydrodiene polysiloxic acid, which is referred to as Document 3.

Comparative Example Extruder-type fibers and dipping-type fibers were woven as they were without the antifouling treatment of the present invention, and a contamination test was conducted by weaving the same fabric as in Example 1. This was used as a comparative material. It was set to 1.2.

Table 1 shows the results of the contamination test for materials t, z, 3 and comparative sample 1.2.

◎ Here, there is significantly less dust pollution.

○ Less contamination due to dust.

△ Severe pollution from dust, ×　Contamination by dust is extremely large. It is.

Patent applicant Izumi Co., Ltd.

Claims (1)

[Claims] l A synthetic fiber bundle is treated with a powdery thermoplastic synthetic resin adhesive that is solid at room temperature, and the synthetic fiber bundle is first treated with a powdery thermoplastic synthetic resin adhesive. A vinyl chloride resin-coated fiber (hereinafter referred to as extruder type fiber) produced by heating and melting a resin adhesive to adhere it to the surface of the fiber bundle, and then adhesively coating it with molten vinyl chloride;-4 (jt IIf9), or The fabric or synthetic fiber bundle obtained by weaving the extruder type fiber is immediately immersed in a molten vinyl chloride resin bath.
Vinyl chloride resin-coated fibers produced by dipping treatment (hereinafter referred to as dipping type fibers). ] or the woven fabric obtained by weaving the dipping type fibers, respectively.
A method for antifouling processing of a protective sheet for construction work made of synthetic fiber or fabric coated with vinyl chloride resin, characterized in that it is produced by treating it with an aqueous tM'rlljf solution of ~20% by weight and drying.