The purpose of this article is to allow the reader to understand the principles that relate to the use of an L-sealer in creating a pack enclosed within shrink film.
Shrink wrap requires a pack to be enclosed in shrink film before the pack and film are introduced to a heat source which activates the films memory to produce the desired effect.
There are two ways in which pack may be wrapped the pack may be either wholly enclosed or partially enclosed using a sleeve.
The sleeve is not the concern of this article. Sleeve wrapping generally involves polyethylene material and collations of packs where the medium provides the lowest packaging costs for moving products in bulk.
The total enclosure of a pack allows it to be offered principally for display in a thin material that enhances its appeal.
The issue is then to be able to create a bag around a product.
This is achieved either by an L-sealer or by an automatic machine using one or two rolls of flat film where a variety of alternative sealing methods leads to the same objective the pack is wholly enclosed.
It is impossible to achieve an appropriate shrink result unless the film...
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