| 摘要 |
Thermoplastic polymer fabric article of PVA fibre are disposed of by subjecting the fabric afer use to an aqs. bath to dissolve the fabric. Fibres are formed of PVA homopolymer that has been highly crystallised by post drawing or by heat annealing. PVA fibre is insol. at temps below 37 deg. C., but is water soluble at some temps above 37 deg.C. Fabric article is a drape, towel, cover, overwrap, gown, head cover, fire mask, shoe cover, sponge, dressing, tape, underpad, diaper, wash cloth, sheet, pillowcase or napkin. Pref. fabric can be woven or knitted or nonwoven, e.g. spun-bonded, melt blown, wet laid and hydroentangled, or thermally bonded, after hydroentangling; 30-70 percent of the fabric surface is melted by thermal bonding. Fabric has a weight of 25-80 g/sq.yd. Fibres are pref,. water soluable only at temps. above 50 deg. C., esp above 90 deg.C. Fibre size is 0.5-5.0 denier, pref. 1.0-2.0 denier, esp 1.2-1.5 denier.
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