MULTI LAYER SHEET WHICH IS MADE OF PLASTIC MATERIAL FOR RECIPIENTS MAKING WHICH ARE MEANT TO BE CLOSED WITH A WELDED LITTLE LID AND RECIPIENTS WHICH ARE FORMED FROM THIS SHEET

摘要

PCT No. PCT/FR90/00744 Sec. 371 Date Jun. 18, 1991 Sec. 102(e) Date Jun. 18, 1991 PCT Filed Oct. 10, 1990 PCT Pub. No. WO91/05656 PCT Pub. Date May 2, 1991.Multilayer sheet for making containers with lid closed by sealing. The upper layer 7 is comprised of an heterogeneous mixture of two products having different coefficients of viscosity, the most fluid product being compatible with the lower layer 8 of the lid. Removal of the lid leads to tearing of the upper layer 7 by decohesion.