PVC shrinkable film label is a part of the label market. At present, it is in rapid growth and its market share is expanding. It is expected that the annual growth rate will be about 15%, which * * exceeds the annual growth rate of about 5% in the general label market. PVC shrinkable film has great characteristics and development prospects, It has become a bright spot in the label printing industry. It is predicted that the domestic heat shrinkable film market will grow at a rate of more than 20% in the next five years.
The manufacturing of PVC shrink film label has high requirements for process technology, especially when printing PVC shrink film, how to control the drying temperature is very important. For general water-based and solvent based inks, if the drying temperature is too high, the material will shrink; If the temperature is too low, the ink is not dried thoroughly enough, resulting in problems such as adhesion and dirty back. Therefore, the process is quite complex and the scrap rate is high. For the UV curing and drying technology, under the action of UV energy, the ink makes the polymer form network crosslinking in an instant, and the ink solidifies rapidly, which has no effect on the temperature of printing materials. The unique cold curing system is very suitable for the manufacture of thermal material labels.
At present, the production process of * * has three processes. It is made of polyethylene and copolymerized polypropylene as the main raw materials, adding additives and co extrusion blow molding. This process is different from the tradition. Because of the poor melt performance, the double film bubble process is adopted. It is also called prandi process in the world. Its principle is to extrude the raw materials from different machines through the co extrusion die, The product is prepared by quenching after forming, heating and secondary drawing.
We produce PVC shrink film in various specifications, with a general thickness range of 12 μ m～30 μ m. Common thickness is available, and the width specification is determined by the customer. It remains soft under the temperature difference of 150 degrees and is suitable for the storage and transportation of various packages. The raw materials are environmentally friendly and used for food packaging.
1. PVC heat shrinkable film has high strength and large elastic tension. It can wrap goods of any geometry tightly, and can avoid damage to goods caused by bundling. It has good anti loosening, rainproof, dustproof and other effects.
2. PVC heat shrinkable film can use high-performance resin and accessories to meet the needs of different users.
3. PVC heat shrinkable film stretch packaging saves raw materials than shrinkable packaging, and does not need heat shrinkable packaging machine to save energy.
4. The manufacturer of heat shrinkable film reminds you that PVC heat shrinkable film is suitable for the packaging requirements of a variety of products. It can manufacture single-sided viscous products, reduce the noise during winding and stretching, and reduce dust and sand during transportation.
The heat shrinkable film can be used for the transportation of a variety of products, so as to protect the products. Because the shrinkage performance of the heat shrinkable film is relatively good, it is loved by the majority of people. * * the heat shrinkable film manufacturer brings you the inspection standard of the heat shrinkable film. Let's have a look.
1. When inspecting the heat shrinkable film, first look at the surface of the heat shrinkable film to see whether the transparency of the heat shrinkable film is good, whether the color is bright, whether there is any damage, whether it is perforated, etc.
2. The heat shrinkable film manufacturer reminds you not to forget to look at the flatness of the heat shrinkable film. You can take a heat shrinkable film at random to see whether the heat shrinkable film has wrinkles and whether there are signs of shrinkage.
3. Another is to look at the outer packaging of the heat shrinkable film and see whether there is the product name, manufacturer, date, quantity and other information on the surface, and the surface should be smooth, clean and free of dust.
