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具有一定简单形体的工业品及日用品的密封包装,采用塑料袋热合的方式因其热合部位不易平整而影响外观质量。下面介绍的以PVC热缩管膜及压敏胶膜相结合的密封包装法,密封性能优良、外观平整光亮、透明度好,对产品有明显的装饰效果。一、材料(1) PVC热缩管膜是近年来新兴起的包装材料,是由聚氯乙烯树酯为主体加入某些助剂而成。具有耐酸碱、耐腐蚀、防潮、防污、透明光泽等优点,并在受热情况下有良好
Has a simple form of industrial products and daily necessities sealed package, the use of plastic bags heat sealing method because of its heat sealing site is not easy to affect the appearance of quality. The following describes the PVC heat-shrinkable tube film and pressure-sensitive adhesive film combination of sealed packaging, excellent sealing performance, the appearance of flat and bright, good transparency, the product has obvious decorative effect. First, the material (1) PVC heat shrinkable tube film is a new packaging material in recent years, is made of polyvinyl chloride resin as the main part of adding some additives. With acid and alkali, corrosion-resistant, moisture-proof, anti-fouling, transparent and other advantages, and in the case of heat are good