Textile sizing yarn elongation testing method and yarn fixed-length interception device used by textile sizing yarn elongation testing method

Abstract

As for the defects that elongation which is obtained when an existing technical method and an existing testing method test the sizing yarn elongation is low in facticity, the invention provides a textile sizing yarn elongation testing method and a yarn fixed-length interception device used by the textile sizing yarn elongation testing method. The method includes the steps of intercepting a fixed amount of sizing yarn samples and warp yarn samples of a fixed length, weighing the sizing yarn samples and the warp yarn samples after being dried, and calculating the elongation of obtained sizing yarn. The yarn fixed-length interception device comprises a gland and a base, a pressure head is arranged on the working surface of the gland, a through groove is formed in the working surface of the base, and the through groove is matched with the pressure head in shape and size. The through groove is connected with the pressure head through a bolt. When the device with the structure is utilized to intercept the yarn, the yarn is carded to be flat and straight and placed in the through hole, the gland is pressed tightly, and then the yarn of a certain length can be intercepted. Secondary stretching for the yarn is not caused, and the objective sizing yarn elongation can be obtained.

Description

technical field [0001] The invention relates to a test method for textile sizing elongation and a used yarn fixed-length cutting device. Background technique [0002] Sizing elongation is one of the three key process parameters in the sizing process. Testing and monitoring it is helpful for process adjustment and improving sizing quality. [0003] The sizing elongation refers to the percentage increase of the length of the sizing yarn after sizing relative to the length of the warp yarn before sizing, expressed as: (Formula 1), where E is the sizing elongation, L 2 is the output length of sizing, L 1 for the warp feed length; or with (Formula 2), where V 2 is the output line speed, and V1 is the input end line speed. The elongation of the sizing is produced by the elongation of the warp yarn by the sizing, drying and warp tension during the sizing process. The elongation directly affects the strength and elasticity of the sizing yarn. Performance, thus affecting the ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a kind of textile sizing elongation that can more truly reflect the elongation of sizing in view of the low authenticity of the elongation obtained when the prior art method and testing device test the elongation of the sizing The test method and the yarn cut-to-length device used

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