POLYOLEFINIC MULTIPLE-LAYER SHEET WITH BIAXIAL ORIENTATION, WHICH SEALS AT LOW TEMPERATURE, PROCESS FOR ITS MANUFACTURING AND EMPLOYMENT.

摘要

The present invention refers to a polyolefinic and sealable multiple-layer sheet, with 3 layers B2D as minimum, from which D is a polyolefin base layer, Z is an intermediate layer, and D is a finishing layer applied upon preceding layer. Finishing layer contains at least 75 percent by weight of a sealable polyolefin. Finishing layer sealable polyolefin has a minimum sealing temperature of at least 100 degree C. Intermediate layer contains at least 75 percent by weight of a sealable polyolefin. Finishing layer polyolefin sealing minimum temperature is higher than intermediate layer polyolefin minimum sealing temperature. Finishing layer thickness is lower than 0,4 (m.