Title:
【発明の名称】製品の真空包装に使用されるクロージャおよび該クロージャの加圧作動ボタンに可視指示器を装着する方法
Document Type and Number:
Japanese Patent JP3129766
Kind Code:
B2
Abstract:
A vacuum identifying button (26) of a closure (16) for containers (10) has encapsulated microcapsules (30) containing a suitable dye. While the button (26) is in its depressed, concave configuration, a coating (28) surrounding the microcapsules (30) is cured and caused to bond to the microcapsules (30). When the button (26) everts to project upwardly and have a convex configuration, the coating (28) is tensioned causing the microcapsules (30) to rupture and release the color forming dye materials thereof. Evidence of button flipping or tampering can be simply forming a colored area, such as a stripe. However, colored areas may be in a design to present a warning or message.
Inventors:
H. Darrel Allah
Application Number:
JP17803491A
Publication Date:
January 31, 2001
Filing Date:
July 18, 1991
Export Citation:
Assignee:
Continental White Cap Incorporated
International Classes:
B65D55/02; B65D79/00; B65D81/20; B65D25/20; (IPC1-7): B65D55/02; B65D25/20; B65D81/20
Domestic Patent References:
| JP6228338A | ||||
| JP62284830A |
Other References:
【文献】米国特許3736899(US,A)
Attorney, Agent or Firm:
Kazuo Shamoto (4 outside)