B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
B32B 5/26 (2006.01) A41D 13/12 (2006.01) A61F 13/15 (2006.01) B32B 27/12 (2006.01) D04H 13/00 (2006.01)
Patent
CA 2343636
A breathable and liquid-impervious composite sheet l includes a flexible, breathable and liquid-impervious thermoplastic synthetic resin film 2 and heat-sealable nonwoven fabric layers 3A, 3B placed upon opposite surface of the film 2. The film 2 has a basis weight of 0.098 - 0.392 N/m2 and a thermal shrink percentage of 3 - 18 % under 60 °C thermal atmosphere while the nonwoven fabric layers 3A, 3B have a basis weight of 0.049 - 0.294 N/m2. The sheet 1 is formed with plural arrays of heat-sealed regions 4 each extending in transverse direction Y and spaced one from another in longitudinal direction X intersecting the transverse direction Y. Between each pair of the adjacent heat-sealed regions 4, the nonwoven fabric layers 3A, 3B describe circular arcs which are convex outward in a thickness direction of the sheet 1 from the opposite surfaces of the film 2.
Atsuta Yasushi
Matsushita Michiyo
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
Uni-Charm Corporation
LandOfFree
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