It is reported that the export products produced by Hangzhou Wahaha Group Co., Ltd. use colored heat shrinkable packaging films. This color film is a three-layer extruded composite film - PEPR. This PEPR color film is a new member of POF shrink film. The company began to use POF heat shrink film instead of PVC heat shrink film in 1998, and in recent years began to use colored PEPR heat shrink film on export products. At present, there are not many products in China that use color film for heat shrinkage, but abroad, this method has become very common. In order to adapt to market demand, Wahaha has also introduced this method. While PEPR color film plays a clustering role, its shelf display effect is far better than that of transparent shrink film. In addition, traditional PVC film is easy to produce odor during the heat shrinkage process, and the cuticle after heat shrinkage is hard and can easily hurt consumers. In contrast, PEPR is highly flexible, produces no odor during heat shrinkage, and leaves no residue or corrosive substances on the cutter.

The color film used by Hangzhou Wahaha Group is provided by Zhejiang Chengxin Packaging Materials Co., Ltd. This kind of PEPR color film not only has the excellent characteristics of ordinary POF heat shrinkable film, but also has the following characteristics: it can be printed in multiple colors, achieving the dual functions of trademark paper and outer packaging paper, economical and practical; it can be used on high-speed automatic packaging lines , good machine performance; especially suitable for skin-fitting packaging of irregular items; has high toughness and puncture resistance. In addition, this product also has good cold resistance and can not break at -20°C. Therefore, it is also suitable for frozen food packaging.