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    • 9. 发明授权
    • Two-layered packaging material for foodstuffs one layer of which
comprises a polymer blend
    • 用于食品的两层包装材料,其一层包含聚合物共混物
    • US4525418A
    • 1985-06-25
    • US444723
    • 1982-11-26
    • Horst DinklageHerbert FinkHans-Peter Wolf
    • Horst DinklageHerbert FinkHans-Peter Wolf
    • A22C13/00B32B27/12B32B27/36
    • A22C13/0013A22C2013/0053A22C2013/0093Y10T442/2525
    • 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.
    • 所公开的是用于食品的直接接触包装的双层包装材料,所述材料包括涂布有柔软的第一丙烯酸酯乳液聚合物的布,其包含:(a)基于 总共第一聚合物,包含丙烯酸和/或甲基丙烯酸的酯与低级链烷醇的亲脂性单体组分和基于所述亲脂性组分的0至10重量%的另一共聚单体,甲基丙烯酸甲酯含量 所述亲脂性组分不超过所述总第一聚合物的40重量% (b)基于总第一聚合物,具有0至5重量%的具有酸性的亲水单体组分; 和(c)基于总第一聚合物的量为0至7重量%的交联单体组分。 乳液聚合物可以与配制成比所述第一聚合物更硬的丙烯酸树脂的第二乳液聚合物和/或用作干燥剂的第三乳液聚合物组合使用。