| 摘要 |
<p>PURPOSE: To provide an oriented polymeric film coated with polyethyleneimine. CONSTITUTION: The polyethyleneimine is coated in-line, i.e., during the film manufacturing method for forming the polymeric film and before heat setting the film. In-line polyethyleneimine coated with polymeric film, when used to make a laminate with other polymer such as polyethylene or ionomer type polymer shows no signs of delamination between the film and the extrusoincoated polymer after 2 hours in water at 121C at 15 psi. In-line coating polyethyleneimine on the polymeric film can occur before any orientation of the polymeric film, during interdraw, with respect to biaxially oriented film, or after orienting the film, so long as the coating occurs before heat setting the film. The preferred film is polyethylene terephthalate.</p> |
