Analysis on the characteristics of PVC shrink film

The economy of pvc shrink film plays a very important role in practical application. The price of pvc shrink film should not be too expensive, otherwise it can't be used in production. Its price depends on two aspects: material and manufacturing process.

Pvc shrink film has the characteristic of shrinking when heated, and it will shrink when heated, so that it is tightly attached to the surface of the packaged goods. At the same time, it has the characteristics of high strength, good transparency, waterproof and moisture-proof.

1. The product has a smooth surface, uniform thickness, no obvious spots, no oil stains, impurities and crease marks;

2. The thermal shrinkage rate is high, the lateral shrinkage rate is 48 3%, and the longitudinal shrinkage rate is 12 3%, which is close to the product. It can be shrunk by a thermal shrinkage machine or a hair dryer.

3. Good flexibility. After the package shrinks, it falls from 1m high to the cement floor from different directions for three times without cracking.

4. After the package shrinks, it will be stored at 30℃ without color change such as fading and discoloration.

Pvc shrink film can be used for insulation packaging of electrical appliances and electronic components (such as outer packaging of dry batteries); General goods packaging and contact food packaging, etc. When it is used as a packaging material, it can not only simplify the packaging process and reduce the packaging volume, but also clearly show the color and shape of the goods because the contracted transparent film tightly wraps the packaged goods.