| 摘要 |
What is disclosed is a two-layered packaging material for the direct contact packing of food products, said material comprising cloth coated with a first acrylate emulsion polymer, formulated to be soft, comprising: (a) at least 90 weight percent, based on the total first polymer, of a lipophilic monomer component comprising an ester of acrylic acid and/or of methacrylic acid with a lower alkanol, and from 0 to 10 weight percent, based on said lipophilic component, of a further comonomer, the methyl methacrylate content of said lipophilic component not exceeding 40 weight percent of said total first polymer; (b) a hydrophilic monomer component having acidic properties, in an amount from 0 to 5 weight percent, based on the total first polymer; and (c) a crosslinking monomer component, in an amount from 0 to 7 weight percent, based on the total first polymer. The emulsion polymer may be used in combination with a second emulsion polymer which is an acrylic resin formulated to be harder than said first polymer, and/or with a third emulsion polymer which acts as a drying agent.
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