公开(公告)号：US06447925B1

公开(公告)日：2002-09-10

申请号：US09678384

申请日：2000-10-03

申请人： Norimi Tabota ,  Masatoshi Hashimoto ,  Seizo Takabayashi ,  Hiroshi Nagano ,  Atsuhiko Ohtsuka

发明人： Norimi Tabota ,  Masatoshi Hashimoto ,  Seizo Takabayashi ,  Hiroshi Nagano ,  Atsuhiko Ohtsuka

IPC分类号： B32B2736

CPC分类号： C08J5/18 ,  B29D7/01 ,  B29K2067/00 ,  B29K2995/0049 ,  C08J2367/02 ,  Y10S428/91 ,  Y10T428/1328 ,  Y10T428/31786

摘要： A heat-shrinkable polyester film having a shrinkability in hot water (hereinafter referred to as a hot-water shrinkability) at 95° C. for 10 seconds ranging from 30% to 50% in at least one direction (hereinafter referred to as direction (A)) and ranging from 25% to 45% in a direction (hereinafter referred to as direction (B)) perpendicular to said at least one direction, wherein a difference &Dgr;HS between the hot-water shrinkability in direction (A) and the hot-water shrinkability in direction (B) (ie., &Dgr;HS=|hot-water shrinkability in direction (A)—hot-water shrinkability in direction (B)|) is 10% or smaller, is useful as a wrapping material, mainly as a covering material for the openings of vessels used for packing noodles, puddings, salads, and other foods.

摘要翻译： 在95℃下在至少一个方向上在30％至50％范围内（以下称为方向（以下称为方向性（以下称为热收缩性） （A）），并且在垂直于所述至少一个方向的方向（以下称为方向（B））为25％至45％，其中方向（A）的热水收缩率与热 方向（B）（即DELTAHS = |方向（A） - 热收缩方向（B）|的热水收缩率）方向（B）的水收缩率为10％以下，主要用作包装材料 作为用于包装面条，布丁，沙拉和其他食品的容器开口的覆盖材料。