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    • 7. 发明授权
    • Polyester film for lamination onto metal sheet for processing of said
sheet, and use thereof
    • 用于层压到金属板上用于加工所述片材的聚酯膜及其用途
    • US5384354A
    • 1995-01-24
    • US119100
    • 1993-09-15
    • Kinji HasegawaTakeo AsaiYoji Murakami
    • Kinji HasegawaTakeo AsaiYoji Murakami
    • B29C55/12B32B15/08C08J5/18C08L67/02C08K3/08C08K3/26C08K3/34
    • C08J5/18B29C55/12B32B15/08C08L67/02B29K2067/00B29K2105/16C08J2367/02Y10T428/31681
    • The present invention provides a polyester film for processing of a metal sheet, which shows excellent molding-processability when it is laminated onto a metal sheet and the laminated metal sheet is made into a can by deep drawing or the like and which is suitable and useful for production of a metal can having excellent heat resistance, impact resistance and flavor-retaining property.A polyester film used for lamination onto a metal sheet for processing of said metal sheet, characterized in that the film is formed from 99 to 60% by weight of a copolyester, as the component A, having an ethylene terephthalate unit as the main recurring unit and having a melting point of 210 to 245.degree. C. and 1 to 40% by weight of a polybutylene terephthalate or a copolyester, as the component B, having a butylene terephthalate unit as the main recurring unit and having a melting point of 180 to 223.degree. C., and further comprising a lubricant having an average particle diameter of 2.5 .mu.m or less; and that the film has a plane orientation coefficient of 0.08 to 0.16, a heat shrinkage at 150.degree. C. of 10% or less and a density of less than 1.385 g/cm.sup.3 : and use thereof.
    • PCT No.PCT / JP93 / 00041 Sec。 371日期:1993年9月15日 102(e)1993年9月15日PCT 1993年1月14日PCT PCT。 出版物WO93 / 14152 日期:1993年7月22日。本发明提供一种金属板的加工用聚酯膜,其在层压在金属板上时成型加工性优异,层压金属板通过深冲制成罐, 并且适用于制造具有优异的耐热性,耐冲击性和香味保持性的金属罐。 一种用于层压在金属片上以用于加工所述金属片的聚酯膜,其特征在于,该膜由共聚酯99重量%至60重量%作为组分A,其具有对苯二甲酸乙二醇酯单元作为主要重复单元 熔点为210〜245℃,1〜40重量%的聚对苯二甲酸丁二醇酯或共聚酯作为成分B,以对苯二甲酸丁二醇酯单元为主要重复单元,熔点为180〜 223℃,还含有平均粒径为2.5μm以下的润滑剂; 该薄膜的平面取向系数为0.08〜0.16,150℃的热收缩率为10%以下,密度为1.385g / cm 3以下。
    • 8. 发明授权
    • Biaxially oriented laminated polyester film for use as film to be bonded
onto metal sheet
    • 双轴取向叠层聚酯薄膜,用作粘结在金属薄片上的薄膜
    • US5618621A
    • 1997-04-08
    • US453476
    • 1995-05-30
    • Kinji HasegawaTakeo AsaiMitsumasa OnoYoji Murakami
    • Kinji HasegawaTakeo AsaiMitsumasa OnoYoji Murakami
    • B32B27/36C09J7/02
    • B32B27/36Y10T428/28Y10T428/2878Y10T428/31786
    • A biaxially oriented laminated polyester film comprising (A) a first layer formed from a first copolyester which is composed of ethylene terephthalate unit as a main recurring unit, and (B) a second layer formed from a polyester composition containing (B1) a second copolyester which is composed of ethylene terephthalate unit as a main recurring unit and (B2) a third (co)polyester which is composed of butylene terephthalate unit as a main recurring unit and is contained in an amount of 1 to 40% by weight or (B3) a filler having an average particle diameter of 2.5 .mu.m or less and is contained in an amount of 5 to 80% by weight in place of the third (co)polyester (B3), the second layer being to constitute a surface to be bonded onto a metal surface when the laminated film is laminated on the metal sheet. This composition can give metal cans, e.g., beverage cans and food cans, excellent in heat resistance, resistance to embrittlement under retort treatment, favor retention, impact resistance and anticorrosive properties.
    • 一种双轴取向叠层聚酯薄膜,包括(A)由作为主要重复单元的对苯二甲酸乙二醇酯单元构成的第一共聚酯形成的第一层和(B)由聚酯组合物形成的第二层,所述聚酯组合物含有(B1)第二共聚酯 由作为主要重复单元的对苯二甲酸乙二醇酯单元构成,(B2)由作为主要重复单元的对苯二甲酸丁二醇酯单元构成的含有1〜40重量%的(B2)的第(共)聚酯, )平均粒径为2.5μm以下的填料,代替第三(共)聚酯(B3)而含有5〜80重量%的填料,第二层构成表面 当层压膜层压在金属板上时,粘合到金属表面上。 该组合物可以给出金属罐,例如饮料罐和食品罐,其耐热性优异,在蒸煮处理下耐脆性,有利于保留,耐冲击性和耐腐蚀性。