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Title:
寸法安定性のある不織繊維状ウェブの作成方法および装置
Document Type and Number:
Japanese Patent JP4202601
Kind Code:
B2
Abstract:
A method and apparatus for tentering nonwoven webs during annealing. The nonwoven web of thermoplastic fibers is restrained on a tentering structure at a plurality of tentering points distributed across an interior portion of the web, rather than just along its edges. The nonwoven web is annealed while restrained on the tentering structure to form a dimensionally stable nonwoven fibrous web, dimensionally stable up to at least the heatsetting temperature. The annealed nonwoven fibrous web is then removed from the tentering structure. In one embodiment, the tentering structure restrains the nonwoven fibrous web in a non-planar configuration during the annealing process. The tentering structure includes a plurality of tentering points projecting distally from a tentering support. The tentering points are positioned to be engaged with an interior portion of the web, thus restraining the web during annealing.

Inventors:
Thompson, Delton Earl.
Olson, David A.
Percha, Pamela A.
Application Number:
JP2000538070A
Publication Date:
December 24, 2008
Filing Date:
August 20, 1998
Export Citation:
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Assignee:
3M COMPANY
International Classes:
D06C3/02; D04H1/72; D04H3/03; D04H3/08; D04H3/14; D04H3/16; D04H5/08; D06C3/00; D06C3/10
Domestic Patent References:
JP5011111A
JP8509786A
JP62097825A
JP59106556A
Foreign References:
US4741941
US5788804
Attorney, Agent or Firm:
Takashi Ishida
Jun Tsuruta
Masaya Nishiyama
Higuchi Souji