Containers
OwnerWayne Harrisoninventor
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Abstract
The present invention relates to a method of forming a laminated material comprising the steps of corrugating a paper sheet, and applying a liner to one or both sides of the corrugated sheet, wherein the liner is a pre-made laminate of a paper backing and plastic film which is metalized on one side and corona or chemically treated on the other side. A laminating apparatus for use in the above method is also described herein, which includes a means for feeding out a paper sheet and a liner to a set of corrugating rollers, the liner being a pre-formed laminate of paper and plastics film, and means for uniting the paper sheet and liner immediately subsequently to the corrugation of the paper sheet.
Claims9
A method of forming a laminated material on a continuous basis comprising the steps of:
- (a) corrugating a paper sheet at a temperature of approximately 130° C. to approximately 170° C. and,
- (b) within approximately 5 minutes of formation of the corrugated paper sheet, applying a liner laminate to one side of the corrugated paper sheet on a continuous basis;
- the liner laminate comprising a substrate paper layer, a metalized layer and a polyester film which is on the exterior of the laminated material;
- and,
- opposed sides which are each pre-treated from one of a chemical treatment and a corona treatment;
- the pre-treatment of the sides of the polyester film being adapted to impart an increased melting point and increased adhesion properties to the polyester film.
A method of forming a laminated material on a continuous basis comprising the steps of:
- (a) corrugating a paper sheet at a temperature of approximately 130° C. to approximately 170° C. and,
- (b) within approximately 5 minutes of formation of the corrugated paper sheet, applying a liner laminate to one side of the corrugated paper sheet on a continuous basis;
- the liner laminate comprising a substrate paper layer, a metalized layer and a polyester film which is on the exterior of the laminated material;
- and,
- opposed sides which are each pre-treated from one of a chemical treatment and a corona treatment;
- the pre-treatment of the sides of the polyester film being adapted to impart an altered surface tension to the liner laminate allowing residual heat to dissipate more uniformly.
A method of forming a laminated material on a continuous basis comprising the steps of:
- (a) corrugating a paper sheet at a temperature of approximately 130° C. to approximately 170° C. and,
- (b) within approximately 5 minutes of formation of the corrugated paper sheet, applying a liner laminate to one side of the corrugated paper sheet on a continuous basis;
- the liner laminate comprising a substrate paper layer, a metalized layer and a polyester film which is on the exterior of the laminated material;
- and,
- opposed sides which are each pre-treated from one of a chemical treatment and a corona treatment;
- the pre-treatment of the sides of the polyester film being adapted to impart increased adhesion properties to the polyester film.
Dependencies are inferred from the claim text.