Claims
- 1. A method of making blanks for forming gas impermeable folding cartons, the method including the steps of (1) continuously applying spaced apart coatings of abhesive along one surface adjacent one edge of a running web of indefinite length, (2) continuously die cutting spaced apart gaps along said one web edge, said one web edge between said gaps forming end closure panels for a carton, (3) continuously laminating or extruding a gas impermeable barrier film on said one surface of said web so that said barrier film covers said one surface and spans said gaps, (4) continuously die cutting carton blanks from said web and said extruded or laminated barrier film thereon, said barrier film spanning said gaps of said die cut blanks.
- 2. The method of claim 1 including the additional step of stacking said carton blanks.
- 3. The method of claim 1 including the additional step of applying printed graphics to the other side of said web.
- 4. The method of claim 1 including the step of providing the web with score lines, said score lines adapted to border panels for a carton.
- 5. The method of claim 4 wherein said score lines are provided to the web simultaneously with step (2).
- 6. The method of claim 1 wherein less than all of said end closure panels formed by said gaps have said abhesive coatings thereon.
- 7. The method of claim 1 wherein said spaced apart abhesive coatings are substantially triangular.
- 8. The method of claim 1 wherein less than substantially the entire area of each of said abhesively coated end closure panels is covered by said abhesive coatings.
Parent Case Info
This is a divisional of copending application Ser. No. 07/970,551 filed on Nov. 2, 1992 now U.S. Pat. No. 5,289,939 issued Mar. 1, 1994.
US Referenced Citations (16)
Foreign Referenced Citations (1)
Number |
Date |
Country |
454095 |
Jan 1949 |
CAX |
Divisions (1)
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Number |
Date |
Country |
Parent |
970551 |
Nov 1992 |
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