A substance constructed of polymer plastic film is called shrink film. It shrinks tightly over whatever it is covering when heat is applied. Shrink wrap and shrink film can be used for many different things. Shrink wrap is frequently used to wrap items like food, gift baskets, boxes, toys, books, soaps, etc. Here is a comparison of the two most popular kinds of shrink.
Shrink wrap that may be used for a number of purposes is PVC shrink film. PVC is an abbreviation for polyvinyl chloride. The third most produced plastic in the world is polyvinyl chloride. Prior to being supplanted by polyolefin (POF) shrink wrap a few years ago, PVC shrink wrap was the most often used shrink film.
Common Applications for PVC Shrink Film - PVC shrink wrap is frequently used to package non-edible goods such tiny canisters, CD and DVD packaging, and software.
PVC shrink film has a few downsides, including poor sealing strength, storage problems, and sealing byproducts. The PVC shrink wrap's plasticizer causes the seal's and the plastic's strength to be compromised because it hardens in cold temperatures and softens in heat. PVC shrink wrap also causes carbon buildup on the sealer and minute amounts of hydrogen chloride to be released into the atmosphere. When sealing PVC shrink wrap, adequate ventilation is necessary.
Shrink wrap known as polyolefin shrink film has emerged as the material of choice for packaging both culinary and non-edible goods. For a number of reasons, polyolefin shrink wrap is chosen, including its stronger seal, less odor when sealed, and more adaptable storage. Because there is no chlorine in polyolefin shrink films, they don't form hydrogen chloride gas. Since polyolefin shrink wrap lacks plasticizers, temperature is not a concern. Because it doesn't harden and soften in various settings like PVC shrink film does, polyolefin may be stored in a wide range of temperatures.
Common Applications for Polyolefin Shrink Film - Polyolefin shrink film can be utilized in practically any situation. Toys, athletic items, printed wrap, foods, stationery, and cards are just a few examples of applications.
Standard polyolefin shrink film is irradiated to make it tougher and better able to form seals. This results in cross-linked polyolefin shrink film. The FDA has approved cross-linked shrink film for direct food contact and it is sterile. It provides outstanding clarity for packaged goods to be displayed. View our blog post titled What is cross-linked shrink film to learn more in-depth about its creation and history.
Additionally, cross-linked shrink film leaves less residue on sealers, extending the life of the sealing wire or blade. Shrink film that has been cross-linked is designed to be used with fast machines and high production processes.
Cross-linked shrink film is employed with the same goods as regular polyolefin shrink film in many different applications. It is common practice to employ the cross-linked film in high output procedures. Additionally, it can be utilized to package heavier products that traditional polyolefin shrink film is unable to adequately wrap.
Cross-linked shrink film needs greater seal and shrink temperatures than regular polyolefin shrink film, which is one of its drawbacks. Heat-sensitive items can be damaged and deformed by higher temperatures. higher shrink and seal temperatures. also demand more expensive energy.