FIELD: process engineering.
SUBSTANCE: this invention relates to shrinkable sandwiched films including multiple micro layers. Proposed shrinkable film comprises basic layer and microlayer part with multiple microlayers. Note here that said microlayer part comprises at least 10 microlayers. Note also that every microlayer and basic layer feature thickness while depth of whatever microlayer and that of basic layer relate as 1:2 to 1:40.
EFFECT: higher strength, depth of at least 0,7 mil and breaking point of at least 10 g (ASTM D1922-06a) measured in at least one direction over film length or width.
14 cl, 8 dwg, 14 tbl, 81 ex
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