Composite foil

Details Composite foil Composite foil

B - Operations, Transporting

29

C

154/108, 18/783

B29C 47/06 (2006.01) B32B 27/10 (2006.01)

Patent

CA 1190014

ABSTRACT OF THE DISCLOSURE The invention relates to a composite foil or sheet, in which at least one outer cover layer, normally insoluble in water, is connected to a water-soluble at least single-layer reaction layer, which contains a dissolving intermediary for the cover layer. To achieve complete sealing- tightness, at least the cover layer is constructed free from pores by the extrusion of a foil of a thermoplastic material. As a sheet the foil is constructed self-supporting or rigid. Components can have fertilizing properties and/or properties useful for water purifying. The composite foil is mainly used for packing purposes and can take the form, for instance, of a box.

406873

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