Lesson 3 The technics of nonwovens fabrics
3.3.1Preparationforwebforming3.3.1.1ProceduresbeforewebformingThefiberswithcertainlengthandlineardensitycanbeformedwebbycarding.Butinordertoachievefavorablecardingeffect,therawmaterialsmustbetreatedbyaseriesofprocessingbeforecarding.Theprocessbeforewebfor ......（共20764字）[阅读本文]>>
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