Improved Shrink Wrap Packaging

Abstract

The present invention provides a shrink wrap sleeve for unitizing two or more items, the sleeve comprising a first film region and a second film region, the first film region having an area less than that of the second film region. The shrink wrap sleeve may be used to package multiple products (such as beverage containers) with a reduction in the amount of shrink wrap packaging material used. Also provided are methods for packaging multiple products.

Description

FIELD OF THE INVENTION[0001]The present invention is directed to the shrink wrapping of multiple items to allow for unitized handling. More particularly, the invention relates to shrink wrap sleeves that facilitate unitized handling of the items and are also more economical to produce.BACKGROUND TO THE INVENTION[0002]Shrink wrapping is a familiar method of packaging goods that has been well used for decades. Generally, a polymer film is arranged about the product(s) to be packaged, and heat applied subsequently by a heat gun or passing through a shrink tunnel or oven. Application of heat causes the film to constrict around the product(s).[0003]Shrink wrap can be supplied in several forms. Flat rollstock can be wrapped around a product, often with heat sealing to tack the film together. Centerfolded film is supplied on a roll with the plastic is folded in half: product is placed in the center portion, the remaining three edges are sealed to form a bag, and the package then heated whi...

AI Technical Summary

Benefits of technology

The present invention provides a shrink wrap sleeve for unitizing two or more items, which includes a first film region and a second film region. The first film region has a smaller area than the second film region. The first and second film regions can be discrete films bonded along at least one edge or about two edges. The length and width of the first film region can be the same or different from that of the second film region. The first film region has greater resistance to mechanical deformation and has a greater thickness than the second film region. The method for unitizing two or more products involves disposing the products between the first and second lengths of film, bonding the edges of the films to form a sleeve, and heating the films to contract about the products. The resulting shrink wrapped product has improved protection and stability during shipment and handling.

Problems solved by technology

A problem arises when the individual containers must be removed, as required when stocking a supermarket shelf, for example.

It is a problem that when unwrapping products unitized by shrink wrapping, it is necessary to cut the wrapping with a knife (or similar instrument) or to tear the film to release the individual items.

This adds time, and slows the throughput of supermarket shelf stocking personnel.

The use of a knife also provides an occupational health and safety hazard.

Unitized shrink wrapped products may also be difficult to lift and carry, especially where multiple beverage products are involved.

This leads to significant strain on the back, and may lead to a work place injury.

A further problem is the cost of shrink wrapping.

While convenient (there is no need to incorporate crates into the supply chain, for example) it is a costly method.

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