Among many packaging films, the heat shrinkable film has good flexibility, can resist impact and is not easy to be destroyed, and its gloss is relatively good from the appearance. However, we will find that some heat shrinkable film products on the market are not transparent enough to meet customer expectations, so why is this? As a professional heat shrinkable film manufacturer, we will analyze the reasons for the lack of transparency of the heat shrinkable film.

1. When some manufacturers produce heat shrinkable film, the inlet temperature of the drying tunnel is too high or there is no temperature gradient. The temperature at the entrance of the drying tunnel is too high and the drying is too fast, so that the solvent on the surface of the glue layer evaporates quickly and the surface crusts. Then, when the heat penetrates into the glue layer, the solvent under the film vaporizes, breaking through the film to form a volcanic vent. The ring, one by one, also makes the heat shrinkable film opaque.

2, there is a problem with the rubber roller or scraper, it cannot be pressed at a certain point, forming a neutral position and opaque.

3. There is too much dust in the air of the production environment, and there is dust in the hot air blowing into the drying tunnel after gluing.

4. The amount of heat shrinkable film is insufficient, there is a blank space, and small air bubbles are trapped, causing variegated or opaque. The amount of glue should be checked to make it sufficient and uniform.

The above is the analysis of the reasons for the lack of transparency of heat shrinkable films, which are mainly the four reasons mentioned above. Generally speaking, this phenomenon is caused by the failure to meet the standards during production or due to irregular operation. In view of the above reasons, our company has optimized and adjusted all aspects of the production process of heat shrinkable film. The products produced are highly transparent. Welcome everyone to come and consult.