Dec. 16, 2021
Heat shrink packaging machine is highly automated equipment. The product is widely used in the pharmaceutical, food and beverage, and household chemical industries. The application of shrink film packaging machines can greatly reduce the cost of materials and labor in the use of packaging.
Shrink wrap is a plastic film that can be stretched over awkwardly shaped items and heated to shrink to tightly fit its contours and crevices as if stuck to it – all without any kind of adhesive.
So, when was shrink wrap invented? The process of heating and stretching polythene sheets and cooling them and then reversing the process was first trialed in the US as a potential packaging process in the 1960s. It was then refined and had its first commercial use in 1981 in the US.
As to who invented shrink wrap, its provenance is murky. It is claimed that the process was actually invented in the 1960’s at WR Grace and company, by Robert D. Lowry, John Dreyfuss, and John W. Harrison of Winchester Massachusetts in the US. The process was then refined and rolled out for industrial use by Global Wrap LLC in the US in 1981.
As we have seen, heating pre-stretched polymer sheets allows the ordered molecules to move about and re-order themselves as a tangle of molecules, occupying a much smaller volume and causing the sheet to shrink.
In practice, this means that putting, say, a shrink-wrap pallet cover over a pallet, and heating it the cover will start to contract and pull tight over the goods.
How to use heat shrink wrap involves the following steps:
place goods on the pallet and loosely cover with a shrink-wrap pallet cover
make sure it covers everything
gently heat to ensure even shrinkage
when tight, stop and allow to cool.
As you begin your search, you will need to keep a variety of questions in mind. You do not want to pay an arm and a leg to discover you purchased a machine that won’t accommodate your needs.
What do you plan on wrapping? How many varieties of sizes will you have? Is there the possibility of a new larger product being introduced in the future?
How fast do you need your products wrapped? Each machine should have a product per minute rating. The best way to be absolutely sure it will meet the speed requirements is with pre-purchase testing.
What does your current packaging system look like, and what do you hope it will look like in five or ten years? Ask yourself what shrink wrap machine will integrate smoothly into your current system or which one you’re willing to purchase and move into the future.
Look at your workspace carefully before you make a purchase. Make sure the machine will fit into your current space. If you do not have real estate, consider a smaller line or a smaller combo machine.
We are a shrink wrap machine supplier, please contact us if you need them!