A Guide to Heat Shrink Film

Shrink Film – a material made up of polymer plastic film. When heat is applied, it shrinks tightly over no matter it is covering. There are a variety of uses for Shrink wrap and shrink film. Some typical applications of shrink wrap are for wrapping meals, present baskets, boxes, toys, books, soaps, etc. Below is a breakdown of the 2 most commonly used types of shrink.

PVC Shrink Film – A type of shrink wrap used for a variety of applications. The PVC stands for Polyvinyl chloride. Polyvinyl chloride is the third most-produced plastic within the world. PVC shrink wrap was the most commonly used shrink film until replaced a number of years ago by polyolefin (POF) shrink wrap.

Widespread Uses of PVC Shrink Film – PVC shrink wrap uses embody packaging boxes, CD and DVD packaging, software, small canisters, and different non-edible items.

Drawbacks of PVC Shrink Film – Sealing Strength, storage issues, and sealing by-products are widespread drawbacks of PVC Shrink Wrap. The plasticizer in PVC Shrink wrap hardens in cold conditions and softens under hot conditions, therefore compromising the strength of the seal and the plastic. PVC shrink wrap also releases small quantities of hydrogen chloride into the air and carbon deposits onto the sealer. Proper air flow is required when sealing PVC shrink wrap.

Polyolefin Shrink Film – A type of shrink wrap that has become the favorred selection for packaging products, both edible and non-edible. Polyolefin Shrink wrap is wantred for quite a lot of reasons, including fewer odors when sealed, stronger seal, and more versatile storage. Polyolefin shrink films would not have any chlorine; due to this fact, they don’t produce hydrogen chloride gas. Polyolefin shrink wrap doesn’t have any plasticizers, so the temperature is not an issue. Polyolefin could be stored in a wide range of temperatures and does not harden and soften in different environments like PVC shrink film.

Common Makes use of of Polyolefin Shrink Film – Polyolefin shrink film is used for nearly each kind of application. Applications embody toys, sporting goods, printed wrap, foods, stationery, and cards, just to name a few.

Drawbacks of Polyolefin Shrink Film – Cost and machine compatibility are the 2 significant drawbacks of Polyolefin shrink film. Polyolefin is commonly more expensive than PVC shrink wrap. Many packagers desire PVC because of this reason. There are types of polyolefin shrink wrap which might be more suitable with machines, however Polyolefin machine compatibility has been a difficulty of packagers.

Cross-Linked Polyolefin Shrink Film – Irradiation is utilized to straightforward polyolefin shrink film to make the film stronger, and capable of higher seal strength. Cross-linked shrink film is sterile, and FDA approved for direct food contact. It presents glorious clarity to display packaged products. To view intimately about making and the history of cross-linked shrink film view, our blog put up titled What’s cross-linked shrink film.

Cross-linked shrink film also leaves less residue on sealers, promoting longer sealing blade or wire life. Cross-linked shrink film is made for use with high-speed machines and high output operations.

Widespread Uses of Cross-Linked Polyolefin Shrink Film – Cross-linked shrink film is used with the same products as standard polyolefin shrink film. The cross-linked film is usually utilized in high output operations. It can be used for heavier products; a standard polyolefin shrink film cannot accurately package.

Drawbacks of Cross-Linked Polyolefin Shrink Film – Cross-linked shrink film requires higher seal and shrink temps than a standard polyolefin shrink film. Higher temps can damage and deform products sensitive to heat. Higher seal and shrink temps. also, require higher energy costs.

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