초록 ▼

Apparatus and method for forming a laminate comprising a relatively rigid material having an inner surface with at least one portion thereof comprising a central body portion and wherein the central body portion of a relatively flexible material, preferably fluid impervious, is secured to the centra

Apparatus and method for forming a laminate comprising a relatively rigid material having an inner surface with at least one portion thereof comprising a central body portion and wherein the central body portion of a relatively flexible material, preferably fluid impervious, is secured to the central body portion of the relatively rigid material and the relatively flexible material has opposite edge portions not secured to other portions of the inner surface and to carton blanks formed therefrom. In some instances strips of another relatively flexible material are secured to the opposite edge portions but are not secured to the inner surface.

대표청구항 ▼

1. A system for forming a laminate of materials for use in forming carton blanks comprising:a pair of rolls having facing portions to form a nip therebetween; a continuous strip of a relatively rigid material, first feeding apparatus which feed said continuous strip of a relatively rigid material in

1. A system for forming a laminate of materials for use in forming carton blanks comprising:a pair of rolls having facing portions to form a nip therebetween; a continuous strip of a relatively rigid material, first feeding apparatus which feed said continuous strip of a relatively rigid material into said nip, a plurality of continuous strips of a relatively flexible material in a spaced apart relationship; second feeding apparatus which feed said plurality of continuous strips of a relatively flexible material in spaced apart superposed relationship over portions of said continuous strip of a relatively rigid material into said nip; and coating apparatus for applying a plastic coating material over exposed surfaces of said plurality of continuous strips of a relatively flexible material and said continuous strip of a relatively rigid material prior to the passing thereof through said nip so that said plurality of continuous strips of a relatively flexible material are not secured to any portion of said continuous strip of a relatively rigid material but are held in said spaced apart superposed relationship over portions of said continuous strip of a relatively rigid material by said plastic coating material.