Barrier package for instant film

• US 5,605,278 A
• Filed: 01/29/1996
• Issued: 02/25/1997
• Est. Priority Date: 08/30/1995
• Status: Expired due to Fees

• Current Assignee: International Paper Company
• Original Assignee: International Paper Company
• Inventors: Jensen, Kurt D.
• Primary Examiner(s): Elkins, Gary E.
• Application Number:
  US08/593,301
• Time in Patent Office: 393 Days
• Field of Search: 229/103.2, 229/138, 229/186, 229/235, 206/424, 206/806
• US Class Current: 229/103.2
• CPC Class Codes: B65D 5/241 and the gussets folds connected to the inside of the container body B65D5/247 and B65D5/248 take precedence
• CPC Class Codes: B65D 5/4208 Means facilitating suspending, lifting, handling, or the like of containers handles B65D5/46
• CPC Class Codes: Y10S 206/806 Suspension

Abstract

A carton for a package of photographic film, such as instant film. The carton is formed of a unitary paperboard blank coated on both sides by a thermoplastic barrier film. The thermoplastic functions as an adhesive when acted upon by heat and pressure, thus sealing portion sof the blank together. Each of four corners of the carton includes a gusset folded in such a manner as not to present a raw paperboard edge to the interior. The construction yields an air tight, liquid tight package with an oxygen barrier, and obviates the requirement of many similar packages that the photographic film be separately wrapped in a protective foil or film prior to being placed in a catron. Three embodiments of the carton are disclosed.

Claims

1. A carton for forming a package for photographic film, said carton fashioned from a unitary blank of paperboard, said blank coated with a thermoplastic barrier coating, said carton having a rear wall, a front wall, a top wall, a bottom wall, and two side walls, said top wall having an integral and upwardly extending extension which is coplanar with said rear wall, said carton having four interior corners each having a folded gusset, two of said corners being lower corners and two of said corners being upper corners, each folded gusset having a raw paperboard edge, said carton having an interior, said gusset raw paperboard edges located outside of said carton interior, said rear wall at least partially defined by partially overlapping panels, a portion of each of said two lower corner gussets being folded against an outer surface portion of said rear wall, a portion of each of said two upper corner gussets folded against an interior surface portion of said rear wall, whereby no raw paperboard edges of said gussets are exposed to the carton interior.

2. A carton for forming a package for photographic film, said carton fashioned from a unitary blank of paperboard, said blank coated with a thermoplastic barrier coating, said carton having a rear wall, a front wall, a top wall, a bottom wall, and two side walls, said carton having an interior, said carton having four interior corners each having a folded gusset, two of said corners being right corners and two of said corners being left corners, each folded gusset having a raw paperboard edge, said gusset raw paperboard edges located outside of said carton interior, said rear wall at least partially defined by partially overlapping panels, a portion of each of said two right corner gussets being folded against an outer surface portion of said rear wall, a portion of each of said two left corner gussets folded against an outer surface portion of said rear wall, whereby no raw paperboard edges of said gussets are exposed to the carton interior.

3. The carton of claim 2 including a tear strip extending vertically across said front and rear walls and across said top and bottom walls.