JPH0314677A - Processing of polyester-based fiber-structured material - 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 [Industrial Field of Application] The present invention relates to a method for processing polyester fiber structures in which dye fastness, particularly dye migration, is prevented.

[Conventional Technology] Many coating processes have been used to provide water repellency, waterproofness, moisture permeability, and other properties for industrial materials and sports clothing.

The fiber materials used for these coated fabrics are mainly nylon fibers.

However, nylon fibers have essential drawbacks in light resistance, wet fastness, chlorine fastness, etc., as well as mechanical properties such as dimensional stability and wrinkle resistance.

In response to this, there is an increasing trend to use polyester fibers, which have excellent mechanical properties and functions such as wash-and-wear properties, as coating base fabrics.

However, when polyester fibers are coated with acrylic, urethane, vinyl chloride, etc., there is a fatal drawback that the disperse dyes migrate over time into the membrane that is in contact with the fibers, causing contamination.

Therefore, demand has not increased, and as a result, nylon, cotton, or cationically dyeable polyester materials are currently being used even though their performance is inferior.

As a method for preventing migration contamination of coated products, for example, Japanese Patent Application Laid-Open No. 59-82469 and Japanese Patent Application Laid-open No. 62-
There is a publication No. 28484. In these methods, a crosslinked film is formed by steam processing melamine or a melamine derivative, and the crosslinking is further promoted by plasma treatment. There is a change in the

Furthermore, Japanese Patent Application Laid-open No. 61-97467 proposes a method of crosslinking the surface layer of fibers using plasma, but with this method, it is difficult to effectively crosslink the inner layer yarns of the fiber bundle and the interwoven parts of the fabric. However, since the processing takes a long time, there is a problem with productivity.

Furthermore, there are problems such as color changes due to changes in the polymer structure of the fiber surface layer.

Furthermore, Japanese Patent Application Laid-Open No. 62-45784 proposes a method of attaching a fluorine-based gas plasma polymer to the coating surface, but this method does not prevent the transfer to the coating film, but rather This prevents the migrated dye from migrating to other areas, resulting in problems such as decreased moisture permeability and the dye in non-coated areas migrating to other areas.

[Problems to be Solved by the Invention] An object of the present invention is to provide a method for processing a fiber structure that is excellent in preventing migration of disperse dyes.

[Means for Solving the Problems] In order to achieve the above object, the present invention has the following configuration.

(1) Polyester fibers colored with disperse dyes are treated with low-temperature plasma in a polymerizable gas atmosphere to form a polymer film on the fiber surface, and then low-temperature plasma treated in a non-polymerizable gas atmosphere to form a polymer film. A method for processing polyester fiber structures characterized by crosslinking a membrane.

■ Polymerizable gas is a hydrocarbon gas such as ethane, ethylene, acetylene, C2 F4 + C2 F6 p
The polyester fiber structure according to (1) is at least one selected from fluorine-containing gases such as C3 Fe, C3 F+3, and C4 F8, and silane gases such as vinyltrimethoxysilane, methyltriethoxysilane, and methyltrimethoxysilane. A method of processing things.

(3) Non-polymerizable gas is Ar, N2, He, CO, CO
2. The method for processing a polyester fiber structure according to (1), which is at least one selected from O2, air, and water vapor.

The present invention will be explained in detail below.

The polyester fiber structure referred to in the present invention refers to fibers obtained by copolymerizing or blending polyethylene terephthalate, polybutylene terephthalate, or a third component such as isophthalic acid sulfonate, adipic acid, isophthalic acid, polyethylene glycol, etc. ,
This refers to raw cotton made of this fiber, woven or knitted fabrics made of this fiber, nonwoven fabric, etc.

Note that other fibers such as cotton, wool, nylon, etc. may be mixed with the polyester fibers within a range that does not impede the effects of the present invention.

The disperse dye referred to in the present invention is a disperse dye that can be diffused into a known polyester that is normally applied to polyester fibers, and does not need to be a special dye. Further, the method for dyeing polyester fibers with such a disperse dye may be a commonly used method and does not need to be particularly selected.

The gist of the present invention is to form a plasma-polymerized film using low-temperature plasma in a polymerizable gas atmosphere on the surface of polyester fibers colored with a disperse dye, and then perform low-temperature plasma treatment in a non-polymerizable gas atmosphere to form a polymerized film. It bridges the
The thickness of the obtained polymer film is 0.01μ or more, preferably 0.01μ or more
．． 05-10μ.

The low-temperature plasma of the present invention refers to a discharge generated by applying a high voltage to a gas, and there are various forms of such discharge such as spark discharge, corona discharge, and glow discharge. The preferred discharge form for the present invention is glow discharge, which does not damage fibers and provides uniform discharge.

Glow discharge is below 50 Torr, even 20 Torr
Hereinafter, it is particularly preferably generated by applying a high voltage in a gas atmosphere under reduced pressure of 0.01 to 10 Torr.

Plasma polymerization using low-temperature plasma is a process in which a polymerizable gas is polymerized in the gas phase using low-temperature plasma, and a polymer is deposited on the object to be treated (formation of a polymer film).The gases used in the present invention include: There are no particular restrictions as long as it has polymerizability. Hydrocarbon gases such as ethane, ethylene, acetylene, C2F4, C2
At least one of a fluorine-containing gas such as F6, c3 F', C3 F's Ca F8, and a silane gas such as vinyltrimethoxysilane, methyltriethoxysilane, and methyltrimethoxysilane is used. These are preferable from the viewpoint of ease of polymerization and crosslinkability by non-polymerizable gas plasma which is treated later.

The plasma polymerization of the present invention is carried out under a reduced pressure of 0.01 to 10 Torr, preferably 0.1 to 5 Torr, usually for a period of several seconds to several minutes, but is selected for a period of about 5 minutes at most.

The non-polymerizable gas plasma of the present invention is one in which a non-polymerizable gas is turned into plasma under reduced pressure, and examples of the gas include Ar, N2, HeSCO2, CO102, air, and water vapor. Among such gases, Ar
, N2, He, Co, etc. are preferable in terms of crosslinking efficiency.

The non-polymerizable gas plasma is 0. 0 1~5 0To
It is carried out under a reduced pressure of rr, preferably 0.1 to 1Q Torr, and usually for a period of 5 seconds to 180 seconds.

Examples will be described in detail below, but the present invention is not limited thereto.

In addition, the measuring method and coating method in the examples are based on the methods shown below.

[Example] ■ Dye-transfer coated fabric was layered with 100% polyester white taffeta, and a 1 kg load was applied to the fabric at 100°C.
After heat treatment for 48 hours, the degree of dye transfer to white taffeta and staining was evaluated using a gray scale for staining according to JIS-LO805.

■Coating method Coating resin liquid composition Hydran HW-111 80 parts (H
ydoran HW-111) (manufactured by Dainippon Ink ■: water-based urethane resin) hydran
HW- 1 4 0 2 0 (Hydo
ran HW-140) (Made by Dog Nippon Ink ■: Water-based urethane resin) Deck Silicone Softner 500 3 (Die Silico
ne Softnet 500) (manufactured by Dainippon Ink ■:
Silicone softener) Decamine APM
2 (Deckamin APM) (manufactured by Dainippon Ink: water-based melamine resin) Catalyst
376 0.2 (Catarist
376) (Manufactured by Dainippon Ink ■: Catalyst for water-based melamine resin) Voncort V4 (Voncort V) (Manufactured by Dainippon Ink ■: Acrylic thickener) Ammonia water 0. 4 Coat the above resin liquid using a flow coating knife method and heat at 100℃
It was dried for 60 seconds and further heat-treated at 160° C. for 30 seconds. Is the coating amount of coating resin Log/rr?
It is.

Examples 1 to 11, Comparative Examples 1 to 8 Taffeta (fabric weight: 90 g/%) using polyester yarn (manufactured by Toray ■) using 75 denier 36 filaments was dyed at 130° C. for 45 minutes using the following dispersion liquid.

Rizzo IJ '7 Blue FBL 3%o
wl (Resolin Blue FBL) (C,
I. NaBlue-56) Fixer PH 500 0.5g/1(P
H preparation agent) Ionate TD-208 0.5 g/1 (manufactured by Sanyo Kasei ■ Level dyeing agent) After dyeing, reduction cleaning was performed at 80° C. for 20 minutes using the following solution, followed by water washing and drying.

(Composition of reducing cleaning solution) NaOH 0.3 g/A' Sandet G-29 0.5 g/1 (Surfactant manufactured by Sanyo Chemical) Hydrosulfite 1.0 g/A' (Reducing agent) Next, under the following conditions. Polymerizable gas plasma polymerization and non-polymerizable plasma polymerization were performed.

(Polymerizable gas low temperature plasma polymerization) Processing equipment Bell jar type plasma processing equipment Gas Refer to Table 1 Gas amount 60cc/min Pressure 0. 3-0. 5 Torr Processing time 120 seconds Applied power 400-500 W (Non-polymerizable gas low temperature plasma polymerization) Processing device Bell jar type plasma processing device Gas Ar Gas amount 40 cc/min Pressure Q, 6 Torr Processing time 30-60 seconds Applied power 200-400 W The results are shown in Table 1.

As a result of the above, it was confirmed that the product according to the present invention exhibits a high level of disperse dye migration prevention property by further crosslinking the plasma polymerized product with non-polymerizable gas plasma.

[Effect of the invention] According to the present invention, A pot with disperse dye migration prevention properties. A polyester fiber structure can be provided.

claimant east Re KK formula of\ Gozu company

Claims (3)

[Claims] (1) Polyester fibers colored with disperse dyes are treated with low-temperature plasma in a polymerizable gas atmosphere to form a polymer film on the fiber surface, and then subjected to low-temperature plasma treatment in a non-polymerizable gas atmosphere to form the polymer film. A method for processing a polyester fiber structure characterized by crosslinking. (2) The polymerizable gas is a hydrocarbon gas such as ethane, ethylene, acetylene, C_2F_4, C_2F_6, C_
The polyester fiber structure according to claim (1), which is at least one selected from fluorine-containing gases such as 3F_6, C_3F_8, and C_4F_8, and silane gases such as vinyltrimethoxysilane, methyltriethoxysilane, and methyltrimethoxysilane. processing method. (3) Non-polymerizable gas is Ar, N_2, He, CO, C
The method for processing a polyester fiber structure according to claim 1, wherein the polyester fiber structure is at least one selected from O_2, O_2, air, and water vapor.