Patent ID: 6332488
Filing Date: 2001-12-25
Classification: B32B,B65D,Y10T

Abstract:
Apparatus for forming a laminate of materials for use in forming a plurality of individual carton blanks to substantially eliminate any curl in each of the individual carton blanks comprising:a first laminating roll mounted at a fixed location for rotational movement;a second laminating roll mounted adjacent to said first laminating roll so as to form a nip therebetween and also mounted for rotational movement;drive apparatus for rotating at least one of said first and second laminating rolls so as to rotate both of said first and second laminating rolls;a plurality of spaced apart guides for guiding a plurality of continuous strips of material each of said plurality of spaced apart guides having a guiding surface for guiding at least one of said plurality of continuous strips of material so that adjacent continuous strips of material have facing surfaces;apparatus for applying an adhesive coating material on at least portions of one of said facing surfaces wherein said adhesive coating material is tacky at temperatures between about 60.degree. F. and 110.degree. F.;at least one of said continuous strips of material comprising a relatively rigid material;at least another of said continuous strips of material comprising a relatively flexible, fluid impervious material;all of said plurality of guiding surfaces being at locations spaced from one side of a plane tangent to said first and second laminating rolls at said nip so that all of said continuous strips of material enter said nip only from said one side of said plane tangent to said first and second laminating rolls at said nip to secure said continuous strips of material together;cutting and creasing apparatus for forming cut and fold lines in said continuous sheet of a relatively rigid material and for cutting said laminated continuous strips into a plurality of individual carton blanks; andstacking apparatus for superposing and stacking each of said plurality of individual carton blanks wherein each of said plurality of individual carton blanks has substantially no curl.