公开(公告)号：US20090233024A1

公开(公告)日：2009-09-17

申请号：US11909124

申请日：2007-05-14

Applicant: Otis J. Ballard ,  Kevin M. Bickett ,  Bruce L. Atcher ,  Minoru Hasegawa

Inventor： Otis J. Ballard ,  Kevin M. Bickett ,  Bruce L. Atcher ,  Minoru Hasegawa

IPC: B65B53/02 ,  B32B3/00 ,  B32B3/26 ,  B32B5/20

CPC classification number: B32B5/18 ,  B29C44/22 ,  B29C47/0021 ,  B29C47/0026 ,  B29C47/0057 ,  B29C47/06 ,  B29C47/34 ,  B29C47/883 ,  B29C47/8835 ,  B29K2105/04 ,  B29K2995/0049 ,  B29K2995/0072 ,  B29K2995/0073 ,  B29L2007/008 ,  B29L2009/00 ,  B29L2023/001 ,  Y10T428/1328 ,  Y10T428/1376 ,  Y10T428/24355 ,  Y10T428/249978 ,  Y10T428/249979 ,  Y10T428/249987 ,  Y10T428/249988 ,  Y10T428/249989

Abstract: In some preferred embodiments, a heat shrinkable foamed sheet has a foamed layer (2) constituting a core layer, and a non-foamed layer (3) constituting a surface skin layer integrally formed on the formed layer. The non-foamed layer (3) is less than about 1.55 μm in maximum surface smoothness measured in accordance with ISO8791-4. Alternatively, by regulating various dimensions of foam cells formed in the foamed layer (2) so as to fall within predetermined ranges, a heat shrinkable foamed sheet excellent in surface smoothness and printing nature can be obtained.

Abstract translation: 在一些优选的实施方案中，热收缩发泡片材具有构成芯层的发泡层（2）和构成在成形层上一体形成的表皮层的非发泡层（3）。 根据ISO8791-4测量，非发泡层（3）的最大表面平滑度小于约1.55μm。 或者，通过调节在发泡层（2）中形成的发泡体的各种尺寸，使其落入规定范围内，可以得到表面平滑性，印刷性优异的热收缩性发泡片材。