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Practical Application of Pretreatment Process in Changshu Nonwovens Factory

2017-12-6

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  Róngbùshìróng lèi zhīwùzhòng zhǔyào pǐnzhǒng zhīyī,yǔdēngxīn róng jípíngróng jùyǒu bùtóng zhīchù.Róngbùshìjiāng zhīwùde wěishāzàiqǐróng jīshàng yòng zhēn gǔn lāqǐbùfèn xiānwéi,xíngchéng róngmáo,shǐzhīwùjùyǒu bǎoài xìng hǎo,xīshīxìng gāo,zhídìróuruǎn hòushíděng tèdiǎn.

  Qián chǔlǐgōngyìyǔróngbùzhìliàng guānxìmìqiè.Wèile fāngbiàn qǐróng,róngbùde qián chǔlǐyāoqiúshìqùjiāng,qùzá,bìngqiěyǒu yīdìng de báisèyǔshèntòu xìngnéng,dàn yào jǐn kěnéng bǎocún mián xiānwéi de làzhì.Yīncǐzhěnggèqián chǔlǐgōngyìyāoqiúshìzhòng tuìjiǎng,qīng zhǔliàn huòbùzhǔliàn,zhòng piǎobái.

  Róngbùqián chǔlǐgōngyìliúchéng dàzhìrúxiàzhǔnbèi→(shāo máo)→tuìjiāng→(zhǔliàn)→piǎobái→jìn yàróuruǎn jì→qǐróng→xǐróng.Yěyǒu xiān qǐróng hòu jìnxíng qián chǔlǐde gōngyì,pībùhán làduōshí,róngyìqǐróng,qiěkějiǎnshǎo hòu liàn piào shíde hōng zào cìshù.Róngbùzài yībān qíngkuàng xiàbùshāo máo,yǒushídān miàn róng de bùqǐróng yīmiàn yěkěshāo máo.

  Tuìjiāng shìróngbùqián chǔlǐde zhòngyào gōngxù,tuìjiāng gōngyìliúchéng rúxiàyàjiǎn→duīzhì→yàjiǎn→duīzhì→shuǐxǐ.Dìyīcìyàjiǎn nóngdùwèi shāojiǎn 18~25g/L,rùn shījìshìliàng,yú90~95℃yàjiǎn,bǎochí70~75℃duīzhì1.5H;dìèr cìyàjiǎn yènóngdùkāichēshíwèi dìyīcìyàcáo yòngliàng de 70%,qíyútiáojiàn xiāngtóng.

  Piǎobái yěshìwèile qùchúsèsùjímiánzǐké.Mián róngbùyībān cǎiyòng lǜpiào,piào yèhán yǒuxiào lǜ2~3g/L,pH zhí9.5~10.5,Yàyèhòu yú20~30℃duīzhì45~60min.Piào hòu bìxūjīng shuǐxǐ,tuōlǜchǔlǐ.Piǎobái róngbùyòng yíngguāng zēng bái jìzēng bái,hōng gān hòu qǐróng.

  Rǎnsèróngbùzài rǎnsèhòu yàfēi lízǐxíng róuruǎn jìzài qǐróng.Qǐróng zhìliàng yāoqiúduǎn mìjūnyún,qiánglìsǔnshīxiǎo,bùfúkòngzhìzài guīdìng yāoqiú.Yìnhuāróng pībùzài qǐróng hòu yìnhuāqián yào jīngguò1~2 gépíng xǐ,xǐqùbiǎomiàn fùzhuóde duǎn róng,jiǎnshǎo yìnhuācībìng.

  Flannel fabric is one of the major varieties,and corduroy and velveteen are different.Flannel is the fabric of the weft yarn in the pile up with the needle roller pull up part of the fiber,forming fluff,so that the fabric has a good warm,hygroscopic,soft and thick texture and so on.

  Pretreatment process and flannel quality are closely related.In order to facilitate the nap,flannel pre-treatment requirements are to pulp,to miscellaneous,and have a certain white and permeability,but as far as possible to preserve the waxy cotton fiber.Therefore,the entire pre-treatment process requires re-paddle,light scouring or not scouring,heavy bleach.

  Flannel pre-treatment process is as follows Preparation→(singeing)→desizing→(scouring)→bleach→padding softener→fleece→wash down.There are also first before the velvet after the pretreatment process,fabric wax for a long time,easy to fleece,and can reduce the number of drying after bleaching.Flannel in general does not singeing,sometimes single cashmere can not be velvet side can also be singed.

  Desizing is an important process of flannel pre-treatment,desizing process as follows Caustic→stacking→caustic→stacking→washing.The first caustic soda concentration of caustic soda 18~25g/L,amount of wetting agent,soda at 90~95℃,kept at 70~75℃for 1.5h;the second time caustic soda concentration driving the first time Slot amount of 70%,the rest of the same conditions.

  Bleaching is also to remove pigment and cotton seed hulls.Cotton velvet general use of chlorine bleach,bleaching solution containing available chlorine 2~3g/L,pH 9.5~10.5,after the liquid 20~30℃stacked 45~60min.After the drift must be washed,dechlorination treatment.Bleached velvet whitening with optical brightener,after drying up.