Polyolefin fiber roll and method of making the same
Acid- and caustic- resistant rolls are prepared by forming a nonwoven web of randomly laid entangled polyolefin fibers, stacking a multiplicity of segments of the web into a pile, compacting the pile under a compaction force equivalent to a room temperature compaction force of about 20 x 10 to 55 x...
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Format: | Patent |
Sprache: | eng ; fre ; ger |
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Zusammenfassung: | Acid- and caustic- resistant rolls are prepared by forming a nonwoven web of randomly laid entangled polyolefin fibers, stacking a multiplicity of segments of the web into a pile, compacting the pile under a compaction force equivalent to a room temperature compaction force of about 20 x 10 to 55 x 10 Pa, restraining the pile on its compacted configuration, and, if needed, dressing the sides of the compacted pile to form a smooth cylindrical surface. The preferred polyolefin fibers are formed of polyethylene, polypropylene or polybutylene. |
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