What is the difference between PE/POF/PETG heat shrink film?

There are significant differences in materials, characteristics and applications of PE, POF and PETG heat shrinkable films. The following is a detailed comparison of these three heat shrinkable films:

1. Materials and production processes
PE heat shrink film
Material: PE heat shrinkable film is mainly made of different grades of polyethylene resin mixed and extruded, and sometimes high-quality tackifiers are added.
Production process: After heating, extrusion, casting, and then cooling by chilling rollers.
POF heat shrinkable film
Material: POF heat shrinkable film stands for multi-layer coextruded polyolefin heat shrinkable film. The middle layer is made of linear low-density polyethylene (LLDPE), and the inner and outer layers are made of copolymerized polypropylene (PP).
Production process: It is plasticized and extruded by three extruders, and then processed through special processes such as mold forming and film bubble inflation.
PETG heat shrink film
Material: PETG heat shrink film is a high-performance shrink film made of PETG raw materials.
Production process: It is prepared through a specific process and has excellent shrinkage performance and environmental protection characteristics.
2. Characteristics
PE heat shrink film
Good flexibility: strong impact resistance, strong tear resistance, not easy to break.
High shrinkage rate: It can effectively prevent product scratches and protect products.
Waterproof and moisture-proof: It can reduce moisture damage caused by rain and other factors to cargo packaging to a certain extent.
Low cost: the use of PE heat shrink film is only about 15% of the original box packaging, about 35% of the heat shrink film, and about 50% of the carton packaging.
Printable: Advertising can be carried out on PE heat shrink film to reflect the product image.
POF heat shrinkable film
Non-toxic and environmentally friendly: meets food safety and environmental protection requirements.
High transparency: Make packaged items clearly visible.
High shrinkage rate: uniform heat shrinkage, suitable for fully automatic high-speed packaging.
Good heat sealing performance: can ensure the sealing of packaging.
High surface gloss: Improves the overall aesthetics of the packaging.
PETG heat shrink film
Ultra-high shrinkage rate: It can achieve a final shrinkage rate of greater than 75% and closely fit products of various shapes.
Environmental protection: It has passed GRS international certification and complies with current environmental protection requirements.
High transparency and gloss: Make packaging products more beautiful.
Easy to print: Not easy to fall off, suitable for various printing needs.
3. Application fields
PE heat shrink film
It is widely used in combination packaging and cluster packaging of liquid foods such as beer, beverages, bottled water, condiments, and edible oils.
It is also widely used in foreign trade export, papermaking, hardware, plastic chemicals, building materials, food and pharmaceutical industries.
POF heat shrinkable film
Mainly used for packaging regular and irregular-shaped products, such as automotive supplies, plastic products, stationery, books, electronics, circuit boards, etc.
It is also suitable for packaging of food, cosmetics, canned beverages, dairy products, pharmaceuticals and other products.
PETG heat shrink film
It is used in shrink packaging of beverage bottles, food and cosmetics, and shrink labels for electronic products, etc.
In developed countries, it has become the most ideal alternative material to replace PVC shrink film, etc.
In summary, PE, POF, and PETG heat shrinkable films each have their own advantages in terms of materials, characteristics, and applications. Users can choose the appropriate heat shrinkable film type according to specific needs.