Apparatus for forming the carton blank

• US 6,352,096 B1
• Filed: 10/01/1999
• Issued: 03/05/2002
• Est. Priority Date: 12/21/1992
• Status: Expired due to Fees

• Current Assignee: Graphic Packaging Corporation
• Original Assignee: Graphic Packaging Corporation
• Inventors: Walsh, Joseph C.
• Primary Examiner(s): YAO, SAMCHUAN CUA
• Application Number:
  US09/410,677
• Time in Patent Office: 886 Days
• Field of Search: 156/547, 156/549, 156/554, 156/578, 156/324, 493/335, 493/337
• US Class Current: 156/549
• CPC Class Codes: B31B 2105/001 made from laminated webs, e.g. including laminating the webs
• CPC Class Codes: B32B 37/12 characterised by using adhesives
• CPC Class Codes: B32B 37/1292 selectively, e.g. in stripes, in patterns B32B37/0076 takes precedence
• CPC Class Codes: B65D 5/563 Laminated linings; Coatings
• CPC Class Codes: Y10T 156/1095 Opposed laminae are running length webs
• CPC Class Codes: Y10T 156/1098 Feeding of discrete laminae from separate sources
• CPC Class Codes: Y10T 156/1727 Plural indefinite length or running length workpieces
• CPC Class Codes: Y10T 156/1739 Webs of different width, longitudinally aligned
• CPC Class Codes: Y10T 156/1741 Progressive continuous bonding press [e.g., roll couples]
• CPC Class Codes: Y10T 156/1798 with liquid adhesive or adhesive activator applying means

Abstract

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.

Claims

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.

2. A system as in claim 1 wherein:

said continuous strips of a relatively flexible material comprising paper; and

said strip of relatively rigid material comprising paperboard.

3. A system as in claim 1 and further comprising:

a continuous film of a relatively flexible plastic material;

third feeding apparatus which feed said continuous film of a relatively flexible plastic material into said nip so that said plastic coating material secures said continuous film of a relatively flexible plastic material to said coated surfaces of said plurality of spaced apart continuous strips of a relatively flexible material and said coated surface of said continuous strip of a relatively rigid material.

4. A system as in claim 3 wherein:

said continuous strips of a relatively flexible material comprising paper;

said continuous strip of a relatively rigid material comprising paperboard.

5. A system as in claim 1 wherein:

said continuous strip of a relatively rigid material having opposite edge portions as said continuous strip of a relatively rigid material moves into said nip and said opposite edge portions defining a width of said relatively rigid material;

each of said plurality of continuous strips having opposite edge portions as said plurality of continuous strips of a relatively flexible material moves into said nip and said opposite edge portions defining a width of each of said plurality of continuous strips of a relatively flexible material;

said second feeding apparatus being located so that at least one of said opposite edge portions of one of said plurality of continuous strips of a relatively flexible material is superposed over and substantially coincides with one of said opposite edge portions of said continuous strip of a relatively rigid material and at least one of said opposite edge portions of another one of said plurality of continuous strips of a relatively flexible material is superposed over and substantially coincides with the other of said opposite side portions of said continuous strip of a relatively rigid material;

said width of each of said plurality of continuous strips of a relatively flexible material is substantially less then said width of said continuous strip of a relatively rigid material.

6. A system as in claim 5 and further comprising:

continuous film of a relatively flexible plastic material;

third feeding apparatus which feed said continuous film of a relatively flexible plastic material into said nip so that said plastic coating material secures said continuous film of a relatively flexible plastic material to said coated surfaces of said spaced apart continuous strips of relatively flexible material and said coated surface of said continuous strip of relatively rigid material;

said continuous film of a relatively flexible plastic material having opposite side portions as said continuous film of a relatively flexible plastic material moves into said nip and said opposite side portions defining a width of said continuous film of a relatively flexible plastic material;

said third feeding apparatus being located so that one of said opposite edge portions of said continuous film of a relatively flexible plastic material is superposed over and substantially coincides with said at least one of said opposite side edge portions of one of said plurality of continuous strips of a relatively flexible material and the other of said opposite edge portions of said continuous film of a relatively flexible plastic material is superposed over and substantially coincides with said at least one of said opposite edge portions of said another one of said plurality of continuous strips of a relatively flexible material; and

said continuous film of a relatively flexible material having a width that is substantially the same as said width of said continuous strip of a relatively rigid material.