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Since 1989
How to Use a Shrink Wrapping Machine
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M-Pak Systems, Inc, PO Box 13544, Greensboro, NC  27415Ph:  336.378.6036 Fx:  336.378.6037Email:
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M-Pak Systems Inc
Since 1989
Shrink wrap packaging involves the use of thermoplastic or thermosetting films that shrink when heat is applied to them.

The film is first wrapped/sealed around the product to be packaged -- forming a loose bag or envelope. Heat is applied and the film shrinks tightly to the contour of the product.                            

Usually the shrink wrap process uses centerfolded shrink film - film that has been folded in half and wound into a roll.  The package is formed by sliding the product to be wrapped between the center folds of shrink film.

Using either an I-Bar sealer or a L-Sealer the package is then sealed on three sides to form the loose envelope of film around the product.  In a matter of seconds, the film is sealed and cut simultaneously.

With the I-Bar type sealer, one seal is made at a time.  The package is then turned to seal and cut the open side of the film envelope/bag just made. 

The L-Sealer is faster. It makes two simultaneous seals at right angles to each other and it is not necessary to turn the package.

The film envelope/bag is then shrunk around the product using a heat gun of shrink tunnel to shrink . This requires several seconds depending on the package size.

Shrink Wrapping and How to Use a Shrink Wrapping Machine?