USE OF POLYMER FILM FOR PACKAGING A CULTURE MEDIUM

• US 20160355778A1
• Filed: 12/19/2014
• Published: 12/08/2016
• Est. Priority Date: 12/20/2013
• Status: Active Grant

• Current Assignee: Biomerieux B.V. (Compagnie Merieux Alliance SAS)
• Original Assignee: Biomerieux B.V. (Compagnie Merieux Alliance SAS)
• Inventors: TETART, Bruno, SIMON, Nathalie
• Granted Patent: US 10,144,912 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B32B 23/08 of synthetic resin
• CPC Class Codes: B32B 2307/726 Permeability to liquids, absorption
• CPC Class Codes: B32B 27/302 comprising aromatic vinyl (co)polymers, e.g. styrenic (co)polymers
• CPC Class Codes: B32B 3/266 characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
• CPC Class Codes: B65B 11/48 Enclosing articles, or quantities of material, by folding a wrapper, e.g. a pocketed wrapper, and securing its opposed free margins to enclose contents
• CPC Class Codes: B65B 11/50 Enclosing articles, or quantities of material, by disposing contents between two sheets, e.g. pocketed sheets, and securing their opposed free margins apparatus or devices for forming pockets in or from sheets, blanks or webs B65B47/00
• CPC Class Codes: B65B 2220/20 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 Class Codes: B65B 55/08 by irradiation
• CPC Class Codes: B65D 65/42 Applications of coated or impregnated materials
• CPC Class Codes: B65D 77/04 Articles or materials enclosed in two or more containers disposed one within another
• CPC Class Codes: C12N 1/00 Microorganisms, e.g. protozoa; Compositions thereof medicinal preparations containing material from protozoa, bacteria or viruses A61K35/66, from algae A61K36/02, from fungi A61K36/06; preparing medicinal bacterial antigen or antibody compositions, e.g. bacterial vaccines, A61K39/00; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
• CPC Class Codes: C12N 1/04 Preserving or maintaining viable microorganisms immobilised microorganisms C12N11/00

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/m²×24 hours and 140.0 g/m²×24 hours, preferentially between 70.0 g/m²×24 hours and 120.0 g/m²×24 hours.

Claims

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/m²×

24 hours and 140.0 g/m²×

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 μ

m.

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.