Use of polymer film for packaging a culture medium

Patent metadata

Field	Value
Publication number	US-2016355778-A1
Application number	US-201415103135-A
Country	US
Kind code	A1
Filing date	Dec 19, 2014
Priority date	Dec 20, 2013
Publication date	Dec 8, 2016
Grant date	—

Abstract

A polymer film for packaging at least one microorganism culture medium includes at least one layer of polystyrene and at least one heat-sealing layer. The polymer film has an average water vapour permeability of between 30.0 g/m 2 ×24 hours and 140.0 g/m 2 ×24 hours, preferentially between 70.0 g/m 2 ×24 hours and 120.0 g/m 2 ×24 hours.

First claim

1 . A polymer film for packaging at least one microorganism culture medium, said film comprising at least one layer of polystyrene and at least one heat-sealing layer, said film having an average water vapour permeability of between 30.0 g/m 2 ×24 hours and 140.0 g/m 2 ×24 hours.

2 . The polymer film according to claim 1 , wherein at least one layer is microperforated.

3 . The polymer film according to claim 1 , wherein the film has a thickness of between 20 and 80 μm.

4 . A sachet for the packaging of at least one microorganism culture medium produced from the polymer film according to claim 1 .

5 . A process for packaging at least one culture medium, comprising:
placing the culture medium or media on a film according to claim 1 , on the heat-sealing layer of said film; covering the culture medium or media with a portion, which has remained free, of said film or with another film, such that the heat-sealing layers are facing one another; and securing the edges of the film or of the two films, such that the culture medium or media is or are trapped in the sachet thus formed.

6 . The packaging process according to claim 5 , wherein the film(s) is (are) presterilized.

7 . The packaging process according to claim 6 , wherein the sterilization method is irradiation with radiation selected from the group consisting of gamma-rays and beta-rays.

8 . The packaging process according to claim 5 , wherein the securing step is a heat-sealing step at a temperature of between 100 and 170° C.

9 . The packaging process according to claim 5 , further comprising:
placing the sachet thus obtained inside a second sachet; and sealing said second sachet.

10 . The packaging process according to claim 9 , further comprising:
placing the second sachet thus obtained inside a third sachet; and sealing said third sachet.

11 . The packaging process according to claim 5 , wherein said second and/or third sachets are made from a material selected from the group consisting of cellophane, polyolefins and polyamides.

Assignees

• Biomerieux Sa

Inventors

• Tetart Bruno
• Simon Nathalie

Classifications

• B65B55/08

  by irradiation · CPC title

• B32B27/302

  comprising aromatic vinyl (co)polymers, e.g. styrenic (co)polymers · CPC title

• C12N1/04

  Preserving or maintaining viable microorganisms (immobilised microorganisms C12N11/00) · CPC title

• B65B2220/20

  the primary packaging being bags, the secondary packaging being further bags, the primary bags being either finished or formed concurrently with the secondary bags · CPC title

• B65D65/42

  Applications of coated or impregnated materials · CPC title