| 摘要 |
A heat-sealable coating composition for organic polymeric films such as regenerated cellulose film that provides good runnability properties of the coated films on automatic packaging machines, comprising a conventional heat-sealable vinylidene chloride copolymer coating composition containing from about 0.4 to 1.5% by weight of an alkali metal salt of lauryl sulfate and from about 0.2 to 1.0% by weight of an alkaline earth metal stearate, alkali metal stearate, or ammonium stearate. In addition, the composition may also contain from 0.4 to 1.0% lecithin. The coating composition provides good packaging machine runnability properties in a single coating on organic polymeric films without impairing heat-sealability, and its appearance in response to high relative humidity exposure can be varied in degrees of antifogging characteristics by adjustment of the sulfate and stearate additive concentrations.
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