METHOD AND APPARATUS FOR CORRECTING OF CURL OF THE
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专利名称:METHOD AND APPARATUS FOR
CORRECTING OF CURL OF THERMOPLASTIC
RESIN FOAMING SHEET
发明人:YAOSHIRO YASUNOBU,SUZUKI KEIJIRO,OKU YOJI
申请号:JP25959189
申请日:19891003
公开号:JPH03120026A
公开日:
19910522
专利内容由知识产权出版社提供
摘要:PURPOSE:To simply and effectively correct a curl such as a winding habit, etc., of a foamable sheet by correcting the curl of the sheet in a state that the sheet is in stretched in a S state over a heating roller while heating the front and rear surfaces of the sheet at a predetermined temperature, and conveying the sheet. CONSTITUTION:A wound thermoplastic rosin foamable sheet S is mounted at a supply roller 21 of a conveyor 2, and the end side of the sheet S is stretched from a driving roller 22 over a heating roller 3, a step roller 23 and a guide roller 24. When the roller 3 is engaged, the sheet S drawn from the roller 21 is engaged with the outside of the heating roller 3a of the side near the roller 21 of the pair of rollers 3, then brought to the outside of the other roller 3b, and fed to the roller 23. The sheet S is engaged in a S stage with the roller 3 as seen from its side. Thus, the roller 3 can be brought into contact with both the front and rear surfaces of the sheet S, and the longitudinal and lateral curls of the sheet S can be effectively corrected together with the heat of the roller 3.
申请人:SEKISUI PLASTICS CO LTD
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