JPS6215383A - Treatment agent for perlok spinning - 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 treatment agent for cutting and spinning for treating tow made of synthetic fibers in advance when the tow is subjected to cutting and spinning.

(Prior Art) A spinning oil agent for synthetic fibers is widely known for imparting smoothness and antistatic properties to fibers in a normal spinning process using short fibers of synthetic fibers as a raw material.

For example, a spinning lubricant for synthetic fibers (see Japanese Patent Publication No. 31999/1983) has been proposed whose main component is a metal salt of an alkyl phosphate ester whose alkyl group has an average carbon number of 12 to 15. However, the thick sliver obtained by cutting the tow, which is made by bundling long synthetic fibers spun from a large number of spinnerets using a cutting machine, is processed through processes such as gilling, roving or boviner, and spinning. In kenkiri spinning, which produces spun yarn, in the kenkiri machine, the uniformity of the sliver is deteriorated due to collective cutting of fibers due to poor separation of the supplied tow, and friction between fibers. There are problems such as roller wrapping due to the generation of static electricity, and various countermeasures are being considered to address these problems, such as changing the composition of fiber raw materials, improving cutting equipment, and changing processing agents. However, no fundamental solution has been reached in either case.

(Problem to be solved) When the above-mentioned general spinning oil containing the alkali metal salt of an alkyl phosphate ester as a main component is used as a processing agent for cutting spinning, the temperature rises due to the operation of the cutting machine.80 High heat of ~90°C reduces the cutting property and makes it impossible to obtain a uniform sliver. In addition, when using nonionic activators such as alkyl esters, higher alcohols, or ethylene oxide adducts of fatty acids, which are conventionally used as spinning oils, they have great focusing properties even at normal temperature and humidity, and Not only does this lead to a decline in sex, but there are also problems such as scum accumulation and shedding.

(Means for Solving the Problems) The present invention solves the above problems by using a specially formulated processing agent.

That is, this invention provides (a) an alkyl phosphate potassium salt in which the average number of carbon atoms in the alkyl group is in the range of 12 to 18, and (b) a fatty acid alkali metal salt in which the average number of carbon atoms in the alkyl group is in the range from 8 to 18. This is a processing agent for cutting spinning, characterized in that it contains 40% or more of the total amount of processing agent.

The alkyl group of the alkyl phosphate potassium salt (a) in this invention has an average carbon number of 12 to 18, and examples thereof include a lauryl group, a cetyl group, and a stearyl group.

The alkyl group of the alkali metal salt of fatty acid (b) has an average carbon number of 8 to 18, and this alkyl group may be saturated, unsaturated, branched, or unbranched. Examples of fatty acids include capric acid, lauric acid, myristic acid, palmitic acid, oleic acid, lysyllic acid, stearic acid, and isostearic acid.

In addition to the above-mentioned components (a) and (b), the treatment agent of the present invention contains a commonly used nonionic oil agent and a cationic activator, and the nonionic oil agent includes mineral oil, mineral oil, Preferred examples of the cationic activator include aliphatic alcohols, ethylene oxide adducts of fatty acids, and ethylene oxide/propylene oxide copolymers, as well as quaternary ammonium salt type cationic compounds and amine salt type cationic activators.

The above (a) alkyl phosphate-1 ~ potassium salt and (b)
The total blending amount of the fatty acid alkali metal salt is 40% by weight or more, preferably 50 to 80% by weight, based on the total treatment agent. If it is less than 40% by weight, the splitting property between fibers decreases and it is difficult to cut the fibers. The uniformity of the sliver will be poor, and the sliver will become more likely to wrap around the rollers of the cutting machine. Note that the above (,) components and (
The blending ratio with component b) is preferably in the range of 2:8 to 8:2.

The processing agent of this invention is used as a water-soluble emulsion with a concentration of 0.3 to 15% by weight, and is processed into tow by a dipping method, an oiling roller method, a spray method, or the like. The total solid content based on the tow is 0.08 to 0.3% by weight, preferably 0.1 to 0.2% by weight.

The treatment agent of the present invention can be applied to tow of synthetic fibers made of polyamide, polyester, polyacrylonitrile, etc.

(Example) 450 made of single yarn 1.4 denier polyester fiber
000 denier tow was treated with a 2% by weight water-soluble emulsion of each treatment agent shown in the table below by spraying to obtain solid bone-in JLO tow with a concentration of 15% by weight. The treated tow is fed to a TR-W5 type cutting machine (manufactured by OM Seisakusho) and taken off at a speed of 220 m/min, and the sliver is gilled, roved,
A 60 count spun yarn made of polyester was produced through each spinning process. The following table shows the roller winding state, unevenness of the sliver, strength and unevenness of the spun yarn during the above-mentioned cutting.

(Blank below) Of the treatment agents in the table above, (a) is lauryl phosphate potassium salt, (a') is lauryl sulfate sodium salt, (
b) is potassium laurate, (c) is nonionic oil,
(d) shows a quaternary ammonium salt type cationic compound.

The state of the roller wrapping during towing is determined by average judgment based on observation; O indicates best, O indicates good, Δ indicates somewhat poor, and × indicates poor. The unevenness (U%) of the sliver and spun yarn was measured using a Worcester tester (manufactured by Zellweger Worcester) at a yarn speed of 2.
00 m/min, M constant length 1000 mm, 20℃, 60
%R+ (value measured below).

As can be seen in the above table, in each of the examples, there was little roller wrapping during towing, and the unevenness of the sliver and spun yarn was small and the uniformity was excellent. On the other hand, (b
) Comparative Example 1 without adding potassium laurate, and (
a) In Comparative Example 2, in which sodium lauryl sulfate salt was added instead of potassium lauryl phosphate salt, the roller wrapping condition during towing was somewhat poor, and the unevenness of the sliver and spun yarn was also somewhat large. In Comparative Example 3, in which the ratio of agents (a) + (b) was 40% by weight or less, there was a lot of roller wrapping during towing, and the unevenness of the sliver and spun yarn became large, and the strength of the spun yarn was poor.

(Effects of the invention) The tow treated with the treatment agent of the present invention has good fiber separation properties, less roller wrapping during towing, and improved quality of the sliver and spun yarn at the tow joint. . In addition, not only the tow cutting performance is improved, but also the occurrence of roller wrapping and falling off materials is reduced in processes such as gilling, roving, and spinning of sliver.

Patent applicant: Toyobo Co., Ltd. Agent: Patent Attorney Takehiro Sakano Yoshi 1) Tsukasa Tsukasa

Claims (1)

[Scope of Claims] [1] (a) an alkyl phosphate potassium salt whose alkyl group has an average carbon number of 12 to 18; and (b) a fatty acid whose alkyl group has an average carbon number of 8 to 18. A processing agent for cutting spinning, characterized in that it contains an alkali metal salt in an amount of 40% by weight or more based on the total amount of the processing agent.