METHOD FOR PRODUCING A PLASTIC PACKAGING CONTAINER, AND PLASTIC PACKAGING CONTAINER
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United States of America Patent
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Aug 6, 2015
app pub date -
Jul 17, 2013
filing date -
Jul 17, 2012
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Abstract
A method for producing a plastic packaging container (10) in which a plastic packaging container (10) is formed by injection moulding, deep drawing and/or blow moulding, wherein the plastic packaging container (10) is coated and/or able to be coated with a barrier layer (40), and is produced with a cavity (12) suitable for accommodating a filling material, in particular a food product, and having a sealing zone (20), wherein in order to improve sealability with a sealing material, the surface of the sealing zone (20) is produced in such manner that an area of at least 50% of the surface thereof has a greater average surface roughness Ra according to DIN EN ISO 4288:1998 than the average surface roughness Ra according to DIN EN ISO 4288:1998 of an area of at least 50% of the inner surface (14) of cavity (12), and/or an area of at least 50% of the outer surface, particularly the lateral surface, of the plastic packaging container, and wherein the sealing zone (20) is produced having an average surface roughness Ra according to DIN EN ISO 4288:1998 of at least 200 nm.
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