Stretchable thermoplastic labels for cryogenic storage containers
US5836618A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 6, 1996 |
| Grant date | Nov 17, 1998 |
| Priority date | — |
| Expiry date | Nov 6, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09F3/04
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for specimen identification is described, employing marking or printing of a label for placing on a cryogenic storage vial or other container which must withstand contact with the liquid and/or vapor phases of liquid nitrogen at a temperature of approximately -196.degree. C. The marking or printing also resists the ice and moisture which condenses on the container when it is removed from the liquid nitrogen. The method includes the steps of providing a sized portion of a pressure-sensitive adhesive label having a waterproof thermoplastic facestock material with a markable and print-retaining waterproof upper surface and a waterproof adhesive-coated lower surface. The facestock material is capable of being stretched at room temperature at least 10% in the machine direction and at least 10% in the transverse direction without breaking, whereby the facestock and the adhesive can remain united, and also bonded to the container during and after contact with the liquid nitrogen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.