Methods for detecting section shape and radial profile degree of cellulose acetate fibers

Abstract

The invention discloses methods for detecting a section shape and a radial profile degree of cellulose acetate fibers. The methods comprise two steps of sample prefabrication and sample detection; fiber bundle prefabrication of a sample is completed by a sampler; the sampler is composed of a base body, a thread pressing plate, a front positioning check block and a back positioning check block; several thread fixing grooves and ribbon fixing grooves are formed on the base body of the sampler; the base body of the sampler is connected with the thread pressing plate by a compression bolt; the front positioning check block and the back positioning check block are respectively arranged on two sides of a tail end of the base body of the sampler; a prefabricated sample can be obtained by a sampler for the fiber bundle prefabrication; a cross section of the prefabricated sample can be detected by a laser scanning microscope; a circumcircle radius and an incircle radius of a fiber cross section can be measured, and then a measurement result of the radial profile degree of each fiber can be obtained, thus, radial profile degree detection of a single fiber bundle can be achieved. The methods achieve automatic and quick detection of radial profile degrees of the whole thread and the whole bundle. The sample is prefabricated and detected in 2 hours; an operation is simple and testing accuracy is high.

Description

Technical field [0001] The invention relates to the technical field of fiber detection, in particular to a detection method of acetate fiber cross-sectional shape and radial irregularity. Background technique [0002] The cross-sectional shape is the basic parameter that characterizes the fiber quality characteristics, and the radial profile degree is a quantitative parameter that describes the differentiation characteristics of the profiled fiber cross-sectional shape. With the continuous enhancement of national requirements for cigarette tar reduction and harm reduction, tobacco companies have continuously improved the filtering performance and stability requirements of cigarette filters, and the quantitative detection of the cross-sectional shape of cigarette tows has increased. The size of the tow cross-sectional profile is directly related to the yield of the tow and the filtering performance of the tobacco filter rod. Therefore, the tobacco industry revised and promulgated ...

AI Technical Summary

Problems solved by technology

It can continuously and quickly detect the radial irregularity of the entire single filament strand (hundreds of filaments in a spinneret), the entire tow belt (tens of thousands of filaments), and effectively solve the problem of existing tow cross-section The problems of low efficiency and data representativeness in the test method of shape and radial irregularity

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