IPC분류정보
| 국가/구분 |
United States(US) Patent
등록
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| 국제특허분류(IPC7판) |
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| 출원번호 |
US-0040255
(1987-04-20)
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발명자
/ 주소 |
- Prater Donald R. (Beaverton OR)
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| 출원인 / 주소 |
- Ridgeway Packaging Corp. (Redmond WA 02)
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| 인용정보 |
피인용 횟수 :
65 인용 특허 :
0 |
초록
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A container that is filled with a product through an open end and which is suitable for use in a microwave or conventional oven to hold the product while it is heated. The container is formed of a paperboard blank coated with polyethylene (microwavable) or polyester (microwavable and ovenable), and
A container that is filled with a product through an open end and which is suitable for use in a microwave or conventional oven to hold the product while it is heated. The container is formed of a paperboard blank coated with polyethylene (microwavable) or polyester (microwavable and ovenable), and is folded, filled and thermally sealed on a slightly modified, but generally conventional machine that is otherwise used to assemble and fill prior art end filled containers. The blank includes a first panel having two end walls, front and rear sidewalls, and four gusset corners, and a second panel connected to the rear sidewall along a fold line having two end flaps, and a front flap. A tear-open access flap is defined on the second panel by partially die cut lines. In a first embodiment, the first panel is imprinted with graphics and the second panel with cooking instructions. As displayed for sale, the graphics on the top of the container are visible, while during the heating process, the container is inverted, making the instructions readily visible. A novel design enables tight reclosure of the access flap by insertion of a reclosure tab into a slotted receiver; an interference fit between the access flap and front fold line “shoulders”, and between the tap and the slot holds the access flap tightly closed. In a second embodiment, the graphics are on the top of the container as it is oriented for both sale and for heating the products. In addition, the access flap cannot be tightly reclosed. However, both embodiments permit direct heating in an oven, a benefit only previously available in top filled containers.
대표청구항
▼
container that is filled with a product through one end prior to being sealed, and which is made with a waterproof material suitable for holding the product while it is heated in an oven, comprising: a first panel having four edges, each defined by a fold line; a second panel having four edges, each
container that is filled with a product through one end prior to being sealed, and which is made with a waterproof material suitable for holding the product while it is heated in an oven, comprising: a first panel having four edges, each defined by a fold line; a second panel having four edges, each defined by a fold line; a front sidewall; a rear sidewall; a first and a second end wall; a first and a second end flap; a front flap; the first panel being connected along fold lines at opposite edges to the front sidewall and the rear sidewall, and along fold lines at two other edges to the first and the second end wall, respectively, the front and rear sidewalls and the first and second end walls all being connected by four gusseted corners; the second panel being connected along fold lines at opposite edges to the rear sidewall and the front flap, and along fold lines at two other edges to the first and the second end flap, respectively, the second panel including a tear-open access flap defined by a first pair of partially die cut lines and by a second pair of partially die cut lines, extending generally parallel to and offset from each other toward one of the front flap and the first and second end flaps and terminating at a perforation line that defines a reclosure tab disposed on the one flap; the front sidewall being folded to overlie the front flap and being adherently secured and sealed thereto; one of the first end flap and the first end wall being folded to overlie the other and being adherently secured and sealed to the other, one of the second end flap and the second end wall being folded to overlie the other and being adherently secured and sealed to the other after the container is filled with the product; a tab receiver disposed on one of the front sidewall and the end walls, defined by a pair of perforated lines, the tab receiver including a slot disposed in overlying relationship to the reclosure tab; and the first panel, the first and the second end walls, the front and the rear sidewalls, and the four gusseted corners together defining a generally integral leakproof tray to hold the food product for heating in the oven.
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