Common quality problems
In recent years, the common unqualified items in the national supervision and inspection of cashmere sweater product quality have, in addition to fiber composition and content, pH value, and color fastness, -
Dichloromethane Soluble Methylene Chloride Soluble substance is widely used in the production of wool and cashmere knitwear. This substance reflects the components contained in the knitwear that can be extracted by methylene chloride solvent, including natural wool grease. Various additives added in the process, such as spinning oils, detergents, softeners, etc., can increase the softness of the product and make it feel better. The content of methylene chloride soluble is too high, easy to make the product odor, feel sticky, so the national standard is limited to dichloromethane-soluble substances.
Relaxation Size Change Rate The slackness change rate reflects the wearing performance of cashmere sweaters and also reflects the quality of raw materials and the level of production technology. If the production enterprise can not strictly control the weaving process and the ironing process, it will result in loose product density or ironing of small-size products into large-size products. After washing, the size of the products will be greatly deformed and affect normal wear and damage the interests of consumers.
The burst strength of the bursting strength reflects the firmness of the cashmere knitwear. The strength of the bursting strength is related to the thickness of the yarn and the density of the weaving. The higher the burst strength, the longer the service life of the product. Due to the fineness of cashmere fibers, cashmere knitwear has lower strength than ordinary wool knitwear.
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