Herstellung absorbierender Mehrschichtfolien.

摘要

Conventionally absorbent sheets for meat packaging are made of absorbent cellulose laminations 18 with a cover sheet 14 of polyethylene. The laminations are compression bonded by means of a serrated wheel which forms a series of indentations along one or more lines. When moisture is absorbed the sheet 14 tends to delaminate. To prevent this a thermo-setting material such as a wax is applied along the line of indentations. A wax rivet 24 is thus formed which provides additional mechanical bonding and prevents access of moisture to the immediate region of the compression bond 22 by reason of the absorbed wax 24A.