Plastic and nonmetallic article shaping or treating: processes – Direct application of fluid pressure differential to... – Labeling or embossing indicia
Patent
1992-09-09
1995-07-25
Timm, Catherine
Plastic and nonmetallic article shaping or treating: processes
Direct application of fluid pressure differential to...
Labeling or embossing indicia
15624411, 15624416, 15624424, 264171, 2642105, 2642356, B29C 4924
Patent
active
054359635
ABSTRACT:
An oriented polymeric in-mold label film includes a hot-stretched, annealed, linerless self-wound film lamina and has a face layer for printing and a base layer which includes a heat-activatable adhesive. The film may be hot-stretched and annealed at softening and annealing temperatures exceeding the temperature at which the adhesive is activated by passing the film across rolls for imparting heat to and removing heat from the film under controlled time-temperature-direction conditions to heat at least the majority of the thickness of the film to such softening and annealing temperatures without sticking of the adhesive to the rolls. The heat-shrinkability of the film is balanced thickness-wise to minimize curl and allow the film to be printed in conventional label-printing presses. An antistat may be included only in the charge for the base layer which includes the heat-activatable adhesive. In the manufacture of labelled blow-molded containers, sheets and labels formed from the film may be handled at high speeds while maintaining accurate registration and dimensional and positional integrity even in the absence of any reinforcing backing, yet the labels perform well on deformable containers such as shampoo bottles.
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Opticite Label Films-Printing; Dow Chemical U.S.A. Films Group, Form No. 500-1087-1085, pp. 1-16.
Baid Kushalkumar M.
Lloyd Ronald V.
Popely Gerald G.
Rackovan Mitchell J.
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