Heat shrink films for packaging are films belonging to a class of plastics known as thermoplastic. They soften and melt when heated. The long polymer molecules in heat shrink films are in a tangled up configuration. When the film is made, it is stretched while hot, which lengthens the molecules. They stay frozen when the film is cooled. Again, when enough heat is applied, they freely move and go back to the tangled state, and thus get shorter, shrinking the film.

Shrink-wrapping is a simple, attractive and inexpensive packaging solution. It displays and protects the product, is clean and tamper evident. Shrink-wrapping is an investment in the appearance and appeal of any product.

They are tough, durable and highly versatile. Impact is perfect for a wide range of applications. They offer superior clarity, gloss, and sheen and are puncture resistant. They are capable of using a wide range of materials.

Materials Used For Making Films
Polyvinyl Chloride
PVC is a rigid and a versatile polymer and for several of its applications must be compounded with plasticizing agents. The most commonly used plasticizer is di (2-ethylhexyl) adipate. PVC films have excellent thermo-formability, good chemical resistance and optimized protection and because of this they are a world standard in pharmaceutical packaging. They have been a major contributor to food safety, both protecting and preserving food.

Polyolefin
Polyolefin films are the workhorses of the packaging and agricultural industries. Their good mechanical and durability properties as well as their excellent cost and performance ratio drive their omnipresence.

Polypropylene
Polypropylene is one of the most versatile polymers that serve both as a plastic and as a fiber the most important property of polypropylene is its versatility. Polypropylene films for packing are produced using the latest technology and are particularly clear and glossy. They have high mechanical properties, attractive appearance, and can store products for a prolonged period of time. These are heat sealable films for flexible packing and have high tensile strength.

Polyester
Polyesters are made from chemical substances found mainly in petroleum and are manufactured in fibers, films, and plastics. The excellent combination of optical, physical, mechanical, thermal and chemical properties of the polyester films is driving the growth of the specialty films market. Superior dielectric properties make it the preferred film for use in larger capacitors and also support its use in wire and cable insulation and electric assembly.

Applications: Heat shrink films and packaging
Typical applications include terminating, environmental protection, corrosion protection, moisture sealing, mechanical protection, splicing, color-coding, and strain relief. Leading beverage, dairy, pharmaceutical, food, cosmetic and chemical manufacturers uses these films.

It is used for outer packaging of a number of products including cooked foods, books, magazines, stationery, office supplies, soaps, aerosol cans, detergent bars, video tapes, CD, DVD, phones, calculators, etc. Also used for covering electrical connectors. Ideal for multiple packaging of vitamins, medicines, puddings, jellies, juice, fats food, pastries and sweets. These films are ideal to make packaging pouches, bags, food packaging laminates, dairy packaging, cosmetic packaging materials etc.