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Advances in the thermal bonding of cotton/cellulose acetate nonwovens of untreated and aqueous pre-treated webs

Duckett K. E., Bhat G. S., Gao X., Rong H.

Zeszyty Naukowe. Włókiennictwo / Politechnika Łódzka

2000

z. 59

11-16

Discovering new applications for cotton fiber in thermally bonded nonwovens has required the introduction of thermoplastic fibers having low softening temperatures. Finding the appropriate thermoplastic fiber that is both biodegradable/compostable and thermally compatible with cotton is an important consideration. Cellulose acetate is an appropriate choice for this bonding fiber. Our studies indicate that aqueous solutions containing small percentages of acetone lower thermal processing temperatures and significantly enhance properties of thermally calendered nonwovens. More recent studies have investigated the influence of water pretreatment without acetone additive and have shown that thermal processing is positively modified. Comparisons are drawn between the thermal characterization of bond points and with or without pre-treatment of blended webs prior to calendering. Similar comparisons are made on physical properties of the calendered nonwovens fabrics.