公开(公告)号：US20080182053A1

公开(公告)日：2008-07-31

申请号：US11801902

申请日：2007-05-11

申请人： Michael E. Broadus ,  Richard M. Dayrit ,  Brian P. Rivers ,  Roger D. Vrooman ,  Marvin R. Havens ,  Emmet Austin ,  Frank M. Hofmeister ,  Matthew D. Dawe ,  Nathanael R. Miranda ,  Christopher K. Robinson ,  Bryan B. Freeman ,  Josh E. Johnston

发明人： Michael E. Broadus ,  Richard M. Dayrit ,  Brian P. Rivers ,  Roger D. Vrooman ,  Marvin R. Havens ,  Emmet Austin ,  Frank M. Hofmeister ,  Matthew D. Dawe ,  Nathanael R. Miranda ,  Christopher K. Robinson ,  Bryan B. Freeman ,  Josh E. Johnston

IPC分类号： B65B53/02

CPC分类号： B32B27/34 ,  Y10T428/1328 ,  Y10T428/1379 ,  Y10T428/1383 ,  Y10T428/31725 ,  Y10T428/31739

摘要： A multilayer, heat-shrinkable film contains at least one semi-crystalline polyamide selected from the group consisting of polyamide 6, polyamide 66, polyamide 6/66, and polyamide 6/12. The film may have a total semi-crystalline polyamide content of at least 35 volume percent, based on total film volume, and a total free shrink at 185° F. of at least 35 percent. The film may have an FTIR Transmission Absorbance A1199/A1170 ratio of up to 1.65. The film may be a retortable film, capable of being used in a process for preparing a retorted packaged product. A process for making a heat-shrinkable annular film containing the semi-crystalline polyamide comprises extruding an annular extrudate downward from an annular die, quenching the annular extrudate by applying a quenching liquid to the annular extrudate, reheating the extrudate to an orientation temperature, and orienting the reheated annular extrudate while the reheated annular extrudate is in the solid state, the orientation being carried out with a total orientation factor of at least 2, to produce a film having a total free shrink at 185° F. of at least 10 percent.

摘要翻译： 多层热收缩膜含有至少一种选自聚酰胺6，聚酰胺66，聚酰胺6/66和聚酰胺6/12的半结晶聚酰胺。 基于总膜体积，膜可以具有至少35体积％的总半结晶聚酰胺含量，并且在185°F下的总自由收缩率至少为35％。 该胶片可以具有高达1.65的FTIR透射率吸收率1199 / A 1170比。 该膜可以是能够用于制备蒸煮包装产品的方法中的可蒸煮膜。 制造含有半结晶聚酰胺的热收缩性环状膜的方法包括从环形模具向下挤出环形挤出物，通过向环形挤出物施加淬火液淬火环状挤出物，将挤出物再加热至取向温度，以及 在重新加热的环状挤出物处于固态的同时，对再加热的环状挤出物进行定向，所述取向以总取向因子至少为2进行，以产生在185°F下的总自由收缩率为至少10％ 。

公开(公告)号：US07687123B2

公开(公告)日：2010-03-30

申请号：US11801902

申请日：2007-05-11

申请人： Michael E. Broadus ,  Richard M. Dayrit ,  Brian P. Rivers ,  Roger D. Vrooman ,  Marvin R. Havens ,  Emmet Austin ,  Frank M. Hofmeister ,  Matthew D. Dawe ,  Nathanael R. Miranda ,  Christopher K. Robinson ,  Bryan E. Freeman ,  Josh E. Johnston

发明人： Michael E. Broadus ,  Richard M. Dayrit ,  Brian P. Rivers ,  Roger D. Vrooman ,  Marvin R. Havens ,  Emmet Austin ,  Frank M. Hofmeister ,  Matthew D. Dawe ,  Nathanael R. Miranda ,  Christopher K. Robinson ,  Bryan E. Freeman ,  Josh E. Johnston

IPC分类号： B65B53/00 ,  F16B4/00

CPC分类号： B32B27/34 ,  Y10T428/1328 ,  Y10T428/1379 ,  Y10T428/1383 ,  Y10T428/31725 ,  Y10T428/31739

摘要： A multilayer, heat-shrinkable film contains at least one semi-crystalline polyamide selected from the group consisting of polyamide 6, polyamide 66, polyamide 6/66, and polyamide 6/12. The film may have a total semi-crystalline polyamide content of at least 35 volume percent, based on total film volume, and a total free shrink at 185° F. of at least 35 percent. The film may have an FTIR Transmission Absorbance A1199/A1170 ratio of up to 1.65. The film may be a retortable film, capable of being used in a process for preparing a retorted packaged product. A process for making a heat-shrinkable annular film containing the semi-crystalline polyamide comprises extruding an annular extrudate downward from an annular die, quenching the annular extrudate by applying a quenching liquid to the annular extrudate, reheating the extrudate to an orientation temperature, and orienting the reheated annular extrudate while the reheated annular extrudate is in the solid state, the orientation being carried out with a total orientation factor of at least 2, to produce a film having a total free shrink at 185° F. of at least 10 percent.

摘要翻译： 多层热收缩膜含有至少一种选自聚酰胺6，聚酰胺66，聚酰胺6/66和聚酰胺6/12的半结晶聚酰胺。 基于总膜体积，膜可以具有至少35体积％的总半结晶聚酰胺含量，并且在185°F下的总自由收缩率至少为35％。 该片可能具有高达1.65的FTIR透射率吸收比A1199 / A1170。 该膜可以是能够用于制备蒸煮包装产品的方法中的可蒸煮膜。 制造含有半结晶聚酰胺的热收缩性环状膜的方法包括从环形模具向下挤出环形挤出物，通过向环形挤出物施加淬火液淬火环状挤出物，将挤出物再加热至取向温度，以及 在重新加热的环状挤出物处于固态的同时，对再加热的环状挤出物进行定向，所述取向以总取向因子至少为2进行，以产生在185°F下的总自由收缩率为至少10％ 。

公开(公告)号：US20080182052A1

公开(公告)日：2008-07-31

申请号：US11699154

申请日：2007-01-29

申请人： Michael E. Broadus ,  Richard M. Dayrit ,  Bryan E. Freeman ,  Frank M. Hofmeister ,  Brian P. Rivers ,  Christopher K. Robinson ,  Matthew D. Dawe ,  Nathanael R. Miranda

发明人： Michael E. Broadus ,  Richard M. Dayrit ,  Bryan E. Freeman ,  Frank M. Hofmeister ,  Brian P. Rivers ,  Christopher K. Robinson ,  Matthew D. Dawe ,  Nathanael R. Miranda

IPC分类号： B65B53/02 ,  B32B7/02 ,  B32B27/34 ,  B32B27/32

CPC分类号： B32B27/32 ,  B32B7/02 ,  B32B27/34 ,  Y10T428/1328 ,  Y10T428/2495 ,  Y10T428/24992 ,  Y10T428/3175

摘要： A multilayer, heat-shrinkable film has a first layer that is an outer film layer and that serves as a heat seal layer, and a second layer comprising at least one semi-crystalline polyamide. The first layer contains at least one member selected from the group consisting of (i) polyolefin having a density of from 0.88 g/cm3 to 0.917 g/cm3, and (ii) ionomer resin. The second layer contains at least one semi-crystalline polyamide selected from the group consisting of polyamide 6, polyamide 66, polyamide 6/66, and polyamide 6/12, with the semi-crystalline polyamide making up at least 50 weight percent of the second layer. The film has a total free shrink at 185° F. of at least 35 percent. The film has a total semi-crystalline polyamide content of at least 35 volume percent. The multilayer, heat-shrinkable film exhibits a percent haze as measured using ASTM D 1003-00, and a percent transparency as measured using ASTM D 1746-97, in accordance with the following equation: % Transparency≧5.33 (% Haze)−31.5 The multilayer, heat-shrinkable film can be used to make a packaging article.

摘要翻译： 多层热收缩膜具有作为外膜层的第一层，用作热封层，以及包含至少一种半结晶聚酰胺的第二层。 第一层含有选自（i）密度为0.88g / cm 3至0.917g / cm 3的聚烯烃中的至少一种，和 （ii）离聚物树脂。 第二层包含至少一种选自聚酰胺6，聚酰胺66，聚酰胺6/66和聚酰胺6/12的半结晶聚酰胺，半结晶聚酰胺占第二层的至少50重量％ 层。 该膜在185°F下的总自由收缩率至少为35％。 该膜具有至少35体积％的总半结晶聚酰胺含量。 使用ASTM D 1003-00测量的多层热收缩膜表现出雾度百分比，并且使用ASTM D 1746-97测量的透明度百分比根据下列等式：％透明度= 5.33（％雾度） - 31.5多层热收缩膜可用于制作包装制品。