PURPOSE: To provide a compsn. which is suitable as a heat-sealing agent for lids of convenience noodle caps and is not whitened even when brought into contact with hot steam, by mixing PE, an ethylene/vinyl ester or unsaturated carboxylate ester copolymer and a tackifier.
CONSTITUTION: 20W80wt% PE (i) having a density of 0.91W0.94g/cm3, 15W75wt% copolymer (ii) of ethylene with a vinyl ester such as vinyl acetate or an unsaturated carboxylate ester such as methyl acrylate[in such an amount that α×β=100W400, where α(wt%) is the amount of copolymer (ii) to be added and β(wt%) is the ratio of copolymerized vinyl ester or unsaturated carboxylate ester in copolymer (ii)]and 5W30wt% tackifier (iii) are kneaded together to obtain the titled compsn. For example, an Al foil is laminated an a paper substrate by using molten PE. The surface of Al foil of the laminate is subjected to anchor coating. The surface is extrusion-coated with PE. Then the surface is extrusion-coated with the above compsn. to form a lid material.
HIROSHIGE KUNIE
HIRONAKA YOSHITAKA
| JPS5369792A | 1978-06-21 | |||
| JPS5584659A | 1980-06-26 | |||
| JPS5147928A | 1976-04-24 |
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