Stock material or miscellaneous articles – Sheet – web – or layer weakened to permit separation through...
Patent
1995-09-18
1997-11-04
Choi, Kathleen
Stock material or miscellaneous articles
Sheet, web, or layer weakened to permit separation through...
428167, 428171, 4282984, 4282997, 442352, B32B 330
Patent
active
056837771
ABSTRACT:
The invention relates to a multiple width fiber strip consisting of crimped interlaced filaments and having several zones extending in longitudinal direction of the fiber strip as Well as at least one predetermined tear line (4) extending in longitudinal direction of the fiber strip, wherein the tear strength (daN) of the fiber strip, referred to the total denier (dtex) is at least about 1.7.times.10.sup.-4 daN/dtex. Further it relates to a method for producing one or several such fiber strips, with several separate bands (1, 2) being formed of substantially parallelly extending filaments and the formed bands being crimped jointly to produce one or several crimped fiber strips. The apparatus for carrying out this method is characterized by a pair of transport rolls (8, 9) for jointly transporting the supplied bands (1, 2) and a crimping chamber (10.1, 10.2, 11, 12, 13, 14) which is arranged after the pair of transport rolls (8, 9), for crimping the bands (1, 2) leaving the pair of transport rolls. The invention makes possible, in the case of the production of a multiple width fiber strip with the predetermined tear line referred to, processing on a double skein filter rod machine with a single (individual) treatment section.
REFERENCES:
patent: 4189511 (1980-02-01), Levers et al.
patent: 4259769 (1981-04-01), Greve et al.
Choi Kathleen
Rhone-Poulenc Rhodia AG
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