The three-layer five layer co extruded polyolefin environmentally friendly heat shrink film (POF-C3, POF-C5) is a new type of plastic packaging material developed in Italy in the 1990s, with international advanced level. It is made by plasticizing and extruding linear low-density polyethylene (LLDPE) and copolymer polypropylene through three or five extruders, and then processing them through special processes such as die forming and film bubble blowing. The product is non-toxic and environmentally friendly, meets the standards of the US FDA and USDA, does not release toxic gases during heat sealing, has recyclable waste, high transparency, high shrinkage rate, good heat sealing performance, high surface glossiness, good toughness, high tear resistance, uniform heat shrinkage, and is suitable for fully automatic high-speed packaging. It is a replacement product for traditional PVC heat shrink film and is currently widely used in the outer packaging of food and beverage, pharmaceutical, alcoholic beverage, electrical and electronic products, toys, stationery, books, audiovisual products, cosmetics, handicrafts, daily necessities and other products. Especially its excellent shrinkage characteristics make it the preferred product for collective packaging. Complete specifications, thickness of 13-30 microns, width and length can be customized according to customer requirements; According to product requirements, we can produce shrink wrap bags, shrink film bags, cylindrical films, sheets, rolls, etc. with matching specifications.

1, Main characteristics of POF-C3 series heat shrink packaging film
1. High transparency, good gloss, can clearly display the appearance of the product, improve the exhibition effect, and reflect a higher level of product quality.

2. Good flexibility and easy to use. Due to this flexibility, the packaged items can be cushioned when subjected to external impacts, and packaging for fragile containers can also prevent the containers from shattering and scattering.

3. High shrinkage rate. The maximum shrinkage rate can reach 25%, and the shrinkage force generated by its high shrinkage rate can tightly wrap a group of items to be packaged, playing a good bundling re. It is very suitable for the collective packaging of multiple items, especially for the packaging effect of shaped items. Moreover, the shrinkage force of POF-C3 film processed by special technology is controllable, meeting the requirements of different products for shrinkage force.

4. Good sealing performance, high strength, suitable for manual, semi-automatic, and high-speed fully automatic packaging.

5. Good cold resistance, can maintain flexibility at -50 degrees Celsius without cracking, suitable for storage and transportation of packaged materials in cold environments.

6. Environmentally friendly and non-toxic. The main raw materials for POF-C3 heat shrinkable packaging film include LLDPE, TPP, PPC, and necessary functional additives such as lubricants, anti adhesives, anti-static agents, etc., all of which are non-toxic materials. Compliant with PDA standards in the United States, it can package food.

7. Moisture and dust prevention.

8. Low packaging cost, superior to paper boxes and other materials packaging.

2, The main uses of POF-C3 series heat shrink packaging film

At present, POF-C3 series heat shrinkable packaging film is used for the outer packaging of bowl packaged foods such as noodles; Lactic acid bacteria beverages, jellies, and other packaging materials; The outer packaging or accumulation packaging of drugs and health products; The outer packaging of boxed foods such as biscuits; External packaging or integrated packaging for audiovisual products, telecommunications equipment, stationery, daily necessities, toys, etc.

In addition to being directly used for packaging, POF heat shrink film can also be used for printing after corona treatment, thus meeting the high requirements of product packaging. In addition, new packaging fields and scopes are constantly expanding with market development and consumer practices.

3, Physical properties table

4, Performance comparison of POF (environmentally friendly) heat shrink film
    Environmentally friendly multi-layer co extruded polyolefin (POF) heat shrink film is made by using linear low-density polyethylene (LLDPE) as the intermediate layer and polypropylene (PP) as the inner and outer layers in specialized equipment. The inner, middle, and outer layers are extruded together through a special process to produce a heat shrink film with high transparency, high shrinkage rate, and good heat sealing performance. It combines all the advantages and strengths of polyethylene (PE) and polypropylene (PP), and its outstanding performance is far superior to pure polyethylene (PE) film and polypropylene (PP) film. It is currently widely promoted and used internationally as an environmentally friendly heat shrink packaging material, recognized by the European and American markets. It meets the standards of the US FDA and USDA, and is made entirely of environmentally friendly materials. It is an eco-friendly packaging material that can be recycled and reused. Especially suitable for the pharmaceutical and food industries. The product meets the requirements of "GMP" [note].

Comparison of physical properties between POF, PE, and PVC shrink film

1. The cost POF ratio is 0.92, with a minimum thickness of 0.012mm, resulting in a lower actual unit cost PE has a specific gravity of 0.92 and a thickness of at least 0.03, but the actual unit cost is relatively high PVC has a specific gravity of 1.4 and a minimum thickness of 0.02mm, but the actual unit cost is relatively high  

2. The physical properties of POF are thin and tough, with uniform thickness, good moisture resistance, soft texture, high tensile strength, high tear resistance, and adjustable shrinkage rate. Due to the presence of LLDPE, it has better rub resistance PE is thick and tough, with uniform thickness, good moisture resistance, and soft texture. Its tear resistance is lower than POF, but much higher than PVC, and its adjustable shrinkage rate is poor. Its rub resistance is not as good as POF PVC is thick and brittle, with uneven thickness, poor moisture resistance, hard and brittle texture, low strength, low shrinkage rate, and poor rub resistance  

3. POF has excellent cold resistance and is not hard or brittle at -50 ℃, and is not easy to break. It can be used for frozen food packaging. After shrinking the packaging, it has excellent cold resistance at -50 ℃ -95 ℃. In winter or after freezing, it does not harden or become brittle, so it is not easy to break during transportation. It has static elimination treatment, is not easy to stain dust, and can keep the product clean PVC has extremely poor cold resistance and may become brittle in winter or after freezing, making it prone to breakage during transportation. The longer the shrink packaging is used, the tighter the shrinkage will be, causing deformation of the packaged material. It has no static elimination treatment and is prone to dust contamination, resulting in blurred product contamination  

4. Processing performance POF does not produce moisture or adhere to the sealing rod during the processing, making maintenance and operation easy. Its high toughness, smoothness, and resistance to rubbing make it suitable for automatic packaging on high-speed production lines The PE processing process does not produce moisture and does not stick to the sealing rod, making maintenance and operation easy. It has high toughness and low rub resistance, and can be used for automatic packaging on high-speed production lines The PVC processing process generates volatile matter, which can easily cause mechanical damage and adhere to the sealing rod, making it inconvenient to operate and difficult to maintain  

5. After shrink packaging, the sealing corners of POF are soft, which will not cut hands and is also resistant to rubbing After PE shrink packaging, the sealing corners are soft and will not cut hands After PVC shrink packaging, the corners of the seal are hard and sharp, making it easy to cut and bleed   

6. Environmental hygiene POF is non-toxic and does not produce toxic odors during processing, meeting the standards of the US FDA and USDA. PE is non-toxic and does not produce toxic gases during processing, meeting the standards of the US FDA and USDA PVC is toxic and can produce odors and toxic gases during processing. It is gradually being phased out

Welcome contact us for more information about POF film.

Shenzhen Huajin Packaging Products Co., Ltd.

Eric Huang

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Email: sales@vacuumroll.com