IPC분류정보
| 국가/구분 |
United States(US) Patent
등록
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| 국제특허분류(IPC7판) |
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| 출원번호 |
US-0191238
(1994-02-03)
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발명자
/ 주소 |
- Schmidt Edward H. (Cincinnati OH) Mercer Joseph B. (Hickory NC)
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| 출원인 / 주소 |
- The Procter & Gamble Company (Cincinnati OH 02)
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| 인용정보 |
피인용 횟수 :
37 인용 특허 :
0 |
초록
▼
An improved top opening, rectangular flexible bag for containing a stack of highly compressed flexible articles. The bag has front and back panels, two side panels and top and bottom panels, all of which are connected together to form an internal compartment for containing the stack under high compr
An improved top opening, rectangular flexible bag for containing a stack of highly compressed flexible articles. The bag has front and back panels, two side panels and top and bottom panels, all of which are connected together to form an internal compartment for containing the stack under high compression. The stack is arranged within the bag in such a way that the side panels are under tension. The line of weakness defines the entire top portion of the bag which can be easily removed, thus exposing the entire contents of the bag for easy removal. The improvement to the bag is that the line of weakness is applied to the front and back panel of the bag simultaneously, thus providing perfect alignment of the lines of weakness where they intersect the side seals of the bag. The bag is further improved with a notch where the line of weakness intersects the side seal, thus significantly reducing the force to initiate the tear through the bead of plastic created by the side seal. A further improvement is that the line of weakness is applied in the machine direction as the bag is manufactured, thus requiring a simple, inexpensive, rotary cutting tool rather than an expensive, reciprocating die, and without negatively impacting line speeds.
대표청구항
▼
An easy open substantially rectangular flexible bag of compressed flexible articles, said flexible articles being arranged in a stack and held in compression in a direction substantially parallel to their thickness, said bag of articles comprising: (a) a top half, a bottom half, a front and a back p
An easy open substantially rectangular flexible bag of compressed flexible articles, said flexible articles being arranged in a stack and held in compression in a direction substantially parallel to their thickness, said bag of articles comprising: (a) a top half, a bottom half, a front and a back panel connected to one another by a pair of side panels, each of said side panels including a side seal, a bottom panel and a top panel, all of said panels being comprised of flexible material, said front, back, and side panels forming the sides of said bag, wherein said sides define a perimeter of said bag; (b) a stack of compressed flexible articles with top and bottom portions, each of said articles having a pair of opposed, substantially planar surfaces, said articles being oriented so that said substantially planar surfaces are aligned substantially parallel to the side panels of said bag, said side panels and said front and back panels being subject to tension imposed by said stack of compressed flexible articles, said top and bottom panels being in a substantially untensioned condition; and (c) an easy open device comprising a substantially continuous line of weakness located around the perimeter of said bag in the top half of said bag, said line of weakness comprising serrations in said flexible material, said serrations passing completely through said front, back, and side panels, said serrations in said front panel further lying essentially on top of said serrations in said back panel when said bag is flat and unopened before said bag is loaded with said stack of compressed flexible articles, said easy open device further comprising a pair of notches in said side seals to facilitate the opening of said bag at said side seals, said notches passing completely through said side seals and into said side panels, said substantially continuous line of weakness defining a predetermined portion of said top half of said bag to be at least partially separated from the remainder of said bag without releasing the tension in the remainder of said bag, whereby said predetermined portion of said top half is at least partially separated from the remainder of said bag by applying a grasping force to said predetermined portion of said bag to propagate tears along said line of weakness, whereupon the top portion of the stack of articles is exposed for easy dispensing while the bottom portion of said stack coinciding with the remaining tensioned portion of said bag is retained in a substantially compressed condition.
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