发明名称 |
MULTI-LAYER RESIN FILM, METAL PLATE COATED WITH RESIN, METHOD FOR PRODUCING MULTI-LAYER RESIN FILM, AND METHOD FOR PRODUCING METAL SHEET COATED WITH RESIN |
摘要 |
<p>A method for producing a multi-layer resin film, wherein a plurality of molten resins being different in the melt viscosity are laminated on the surface of a film containing at least one resin containing a coloring component without formation of irregularities; and a method for producing a metal sheet having a resin coating film which comprises laminating said film on a metal sheet. The above method for producing a multi-layer resin film comprises keeping the temperatures of an extruder, a manifold and a dye portion adjacent to the manifold for the pass of a resin having a higher melt viscosity at a level higher than those of the temperatures of an extruder, a manifold and a dye portion adjacent to the manifold for the pass of a resin having a lower melt viscosity, to thereby reduce the difference in the melt viscosities of adjacent resin layers to 3000 poise or less at a shear rate of 20 to 500 sec<-1>, and laminating respective molten resins while adjusting a resin containing a coloring component so as to have 0.5g <= Tm <= 1.0 g, wherein Tm represents a melt strength, and a thickness of one half of the total thickness or more or having Tm >= 1.0 g and a thickness of one third of the total thickness or more, to thereby form a multi-layer film.</p> |
申请公布号 |
WO2005046989(A1) |
申请公布日期 |
2005.05.26 |
申请号 |
WO2004JP12087 |
申请日期 |
2004.08.24 |
申请人 |
TOYO KOHAN CO., LTD.;MATSUBARA, YASUHIRO;MAIDA, NORIMASA;NAKAMURA, TAKUJI;INAZAWA, HIROSHI;KOJO, HARUNORI |
发明人 |
MATSUBARA, YASUHIRO;MAIDA, NORIMASA;NAKAMURA, TAKUJI;INAZAWA, HIROSHI;KOJO, HARUNORI |
分类号 |
B32B27/20;B29C47/04;B29C47/14;B29C47/92;B29K101/12;B29L7/00;B29L9/00;B32B15/08;B32B27/08;(IPC1-7):B32B27/20 |
主分类号 |
B32B27/20 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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