Easy opening carton for frozen comestible

• US 3,981,434 A
• Filed: 04/10/1975
• Issued: 09/21/1976
• Est. Priority Date: 04/10/1975
• Status: Expired due to Term

• Current Assignee: James River Paper Company, Inc.
• Original Assignee: United States Gypsum Company (GEBR Knauf Verwaltungsgesellschaft KG)
• Inventors: Ramich, Gary Allen
• Primary Examiner(s): Moorhead, Davis T.
• Application Number:
  US05/566,835
• Time in Patent Office: 530 Days
• Field of Search: 229/14 BA, 229/51 TS
• US Class Current: 229/227
• CPC Class Codes: B65D 5/5415 the lines of weakness being provided in one or more closure flaps and in the container body so as to form after rupture a lid hinged to a side edge of the container body
• CPC Class Codes: B65D 5/603 Flexible linings loosely glued to the wall of the container B65D5/0272 takes precedence

Abstract

A trunk-style carton for ice cream and the like which displays greater ease in opening and superior protective properties for the product, after removal of a portion of the carton contents and reclosure of the carton, by virtue of a liner sheet beneath the carton cover which covers the upper surface of the carton contents completely and is adhered at one end to the upper portion of the inner surface of the carton back wall and at the other end to a zipper strip or a bonding portion of the inner surface of the carton front cover panel.

Claims

1. A paperboard carton for ice cream comprising a front wall, a bottom wall, a rear wall, opposed end walls and a top cover panel hingedly attached along one edge to the upper edge of the back wall and having a front cover panel hingedly attached to the opposite edge of said top cover panel and overlapping the upper portion of the front wall when the carton is erected, said front cover panel being separated by a pair of spaced upper and lower weakness lines substantially parallel to the hinge line between said top cover panel and said front cover panel into an upper cover front skirt portion, an intermediate detachable portion and a lower bonding portion adhesively bonded to said front wall,

and a flexible, water-resistant liner sheet adhered along one edge thereof to the interior surface of said back wall, said sheet extending to substantially completely cover the interior surface of said top cover panel and being adhered along the opposite edge thereof to the inner surface of said front cover panel in an area below said upper weakness line.

2. A carton according to claim 1 wherein said liner sheet is adhered to the detachable portion of said front cover panel by an adhesive bond which is readily fracturable at normal frozen food storage temperatures.

3. A carton according to claim 1 wherein said liner sheet is a flexible plastic web.

4. A carton according to claim 3 wherein said liner sheet is polypropylene.

5. A carton comprising a receptacle portion including a receptacle front wall, a bottom wall, a rear wall and opposed receptacle end walls, and a cover assembly including a top cover panel hingedly connected to the upper edge of said receptacle rear wall, a front cover panel hingedly attached to and depending from the edge of said top cover panel remote from its hinge connection to said rear wall, and a pair of cover end skirt panels, each connected by a hinge score line to a respective end edge of said top cover panel, corner glue tabs adhesively connecting said cover front panel with said respective cover end skirt panels to form corners of the cover,

said cover front panel including an upper cover front skirt portion, a lower marginal bonding portion for adhesive connection with said receptacle front wall, and an intermediate, detachable zipper strip portion defined by a pair of fracturable lines of weakness joining said detachable portion to said upper cover front skirt portion and to said lower bonding portion, respectively, of said cover front panel,

a flexible, water-resistant liner sheet substantially covering the inside surface of said top cover panel, the upper portion of said receptacle rear wall, said upper cover front skirt portion and said intermediate detachable portion of said cover front panel and being adhered along a first edge thereof to the interior surface of said rear wall close to the hinge line connection between said rear wall and said top cover panel, and adhered along its opposite edge to the interior surface of said detachable portion of said front cover panel by an adhesive bond which is readily fracturable at normal frozen food storage temperatures.