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WRAPPING AND SECURING LOADS ON PALLETS

  • US 3,807,126 A
  • Filed: 02/19/1971
  • Issued: 04/30/1974
  • Est. Priority Date: 06/10/1970
  • Status: Expired due to Term
First Claim
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1. The method of wrapping and securing a load on a pallet comprising applying over the load a wrapper of a heat-shrinkable plastic film, the wrapper having lower end portions adapted to extend downwardly below the pallet, positioning the pallet, with the wrapper in place on the load on the pallet, in an operating position wherein the margin of the bottom surface of the pallet is clear for disposition of the said lower end portions of the wrapper thereunder, causing a flow of heated air downwardly over the wrapper on the outside of the wrapper and changing its direction thence to flow inwardly under the pallet, the air being blown downwardly in a relatively low velocity stream over the wrapper and in a relatively high velocity stream outwardly of the low velocity stream and inwardly under the pallet, the air flowing inwardly under the pallet blowing the lower end portions of the wrapper under the said margin of the bottom surface of the pallet and effecting heat shrinking of said lower end portions of the wrapper underneath the pallet to secure the wrapper to the pallet, the air flowing downwardly over the wrapper effecting heat shrinking of the wrapper on the load, the shrinkage of the lower end portions of the wrapper under the said margin of the bottom surface of the pallet by said inwardly flowing air locking the wrapper in place over the load on the pallet generally before any shrinkage of the main body of the wrapper by the downwardly flowing air takes place.

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