Since September 1, 2007, our country will be carried out formally new issuance GB1103-2007 " pily medium staple cotton " national mandatory standard () of new standard of the following abbreviation. The new standard after revising is right opposite sex fiber (common calls “ 3 ”) examined to be revised greatly again. Agree inside course of study think, new standard is right reduce “ 3 ” content, raise pily quality to will have positive effect. 3 are the quality that shows interfuse cotton reachs textile to cotton the fiber of the sex that be not cotton such as the chemical thread that has serious effect, silk, hemp, hair, plastic rope or lubricious fibrous a general designation.
Current, mix in homebred cotton have 3 silk is serious, according to our country
Spin enterprise is mirrorred, 3 interfuse quantity amounts to northward inland cotton 20 grams / ton. The pecuniary loss that 3 interfuse brings to enterprise of our country spin is inestimable, according to statistic, enterprise of a medium-sized cotton spinning, should use 300 ～ everyday cotton of 400 people choose 3, salary of the member that what want the disbursement person that use worker worker is as high as 2 million yuan / year. Anqing cotton textile mills only choose amounted to 70 thousand 3 tiny bits with labour 2000, throw many yuan 300, winkle 3 27.2 kilogram.
To reduce a loss, shandong of our country's biggest cotton spinning enterprise saves limited company of spin of bridge of the Kingdom of Wei to must give high price to purchase ginned cotton, the 3 normal content in purchasing ginned cotton is 3 grams / ton, every reduce 3 content 1 gram increases price 100 yuan, every more than 1 gram depreciates 100 yuan, if achieve 6 grams,give return money. The window with new the oldest standard quantified 3 namely. Chinese fiber inspection bereau concerns chief introduction, new standard makes clear a regulation in quality requirement, buy in “ , when machining cotton, discovery is mixed etc of stone of metal, brick endangers a gender sundry, must choose is clean and rear can buy, treatment ” , accordingly, the level is not right the content that purchase seed cotton and set range of 3 check proved recipe to becoming wrapping cotton only.
3 content introduced in new standard this quality index, undertake dividing shelf to becoming 3 content in wrapping cotton, made clear cotton to process an unit to becoming wrapping cotton 3 content examine sample, law of check proved recipe and the requirement that quality marks. When cotton trades, the requirement trades to batch wrapping cotton undertakes ration 3 tiny bits or qualitative examine, but by trade to talk things over about the respect affirmatory and specific sampling means and sampling amount. 3 ” content divides “ of new bid brigadier into “ to not have, low, medium, tall ” 4 archives, express with code name “N, L, M, H” respectively. Every tons of lint embodies 3 range to be less than 0.1 grams are mixed be more than 0.8 grams between. When cotton machines an enterprise to brush Ma in a bale of cotton, the regulation should brush code name of on 3 content.
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