Sterilizable package with tear-off indicators
First Claim
1. Sterilizable package comprising a plastic member marginally heat sealed around three sides to a first portion of a paper member so as to leave an opening at one end for inserting the package contents, said paper member being sufficiently porous to permit gas or steam sterilization but impervious to bacteria and having a second portion extending beyond the area to be enclosed by the marginal heat seal when completed, said second portion bearing indicia that changes color upon sterilization and means releasably joining said first and second portions for separating said second portion from said first portion for insertion together with the package contents into the package prior to completing the marginal heat seal and sterilization of the package contents to indicate that the package contents have been subjected to sterilization.
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Accused Products
Abstract
A sterilizable package or pouch is made from a plastic member, generally transparent, which is marginally heat sealed around three sides to a paper member so as to leave an opening at one end for inserting the package contents. The paper member has a portion which extends beyond the area to be enclosed by the marginal heat seal when completed. This portion bears indicia, generally printed on the paper, that changes color upon sterilization (either steam or gas sterilization). The indicia bearing portion is adapted to be separated from the package and inserted therein together with the package contents before the marginal heat seal is completed and the package contents are sterilized.
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Citations
7 Claims
- 1. Sterilizable package comprising a plastic member marginally heat sealed around three sides to a first portion of a paper member so as to leave an opening at one end for inserting the package contents, said paper member being sufficiently porous to permit gas or steam sterilization but impervious to bacteria and having a second portion extending beyond the area to be enclosed by the marginal heat seal when completed, said second portion bearing indicia that changes color upon sterilization and means releasably joining said first and second portions for separating said second portion from said first portion for insertion together with the package contents into the package prior to completing the marginal heat seal and sterilization of the package contents to indicate that the package contents have been subjected to sterilization.
Specification