发明名称 Container for light-sensitive strip materials having improved light sealing means
摘要 In a container for a roll of a light-sensitive strip material having a core on which the light-sensitive strip material is coiled to form a roll, an opening for drawing out the light-sensitive strip material and a teremp cloth provided on the above opening for shielding from light, wherein a filling layer formed of polyolefin copolymer resin usable as the adhesive layer for fixing the teremp cloth on the container body is provided at the ground fabric of the teremp cloth, and/or a multilayer coextruded film is laminated under the ground fabric of the teremp cloth, and the multilayer coextruded film has a tensile strength of more than 500 g/15 mm width and comprises an adhesive layer of an ethylene copolymer resin having a comonomer content of 5 to 36 % for fixing said teremp cloth on the container body and a thermoplastic resin base layer having a melting point of higher than the ethylene copolymer resin adhesive layer by 10 degrees C. or more and a Young's modulus of more than 15 kg/mm2. In this container, the filling material does not so deeply permeate into pile yarns, even though the ground fabric is not so dense. Adhesion of pile yarn dust hardly occurs, and troubles in exposure and development caused by the pile yarn dust are solved. By incorporating the multilayer coextruded film, the thickness of the adhesive layer for fixing teremp cloth on the container body is made uniform and various problems caused by non-uniformity in the thickness of the adhesive layer are solved.
申请公布号 US5275283(A) 申请公布日期 1994.01.04
申请号 US19900579281 申请日期 1990.09.06
申请人 FUJI PHOTO FILM CO., LTD. 发明人 AKAO, MUTSUO
分类号 B65D81/30;B65D85/672;G03C3/00;(IPC1-7):B65D85/67;B65H16/06 主分类号 B65D81/30
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