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EP0087031A2 - Boîte de pétri avec médium prêt à l'usage - Google Patents

Boîte de pétri avec médium prêt à l'usage Download PDF

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Publication number
EP0087031A2
EP0087031A2 EP83101087A EP83101087A EP0087031A2 EP 0087031 A2 EP0087031 A2 EP 0087031A2 EP 83101087 A EP83101087 A EP 83101087A EP 83101087 A EP83101087 A EP 83101087A EP 0087031 A2 EP0087031 A2 EP 0087031A2
Authority
EP
European Patent Office
Prior art keywords
dishes
petri dishes
ready
nutrient media
stack
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP83101087A
Other languages
German (de)
English (en)
Other versions
EP0087031A3 (fr
Inventor
Manfred Dr. Kappner
Werner Gunkel
Winfried Trinkaus
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Merck Patent GmbH
Original Assignee
Merck Patent GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Merck Patent GmbH filed Critical Merck Patent GmbH
Publication of EP0087031A2 publication Critical patent/EP0087031A2/fr
Publication of EP0087031A3 publication Critical patent/EP0087031A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D71/00—Bundles of articles held together by packaging elements for convenience of storage or transport, e.g. portable segregating carrier for plural receptacles such as beer cans or pop bottles; Bales of material
    • B65D71/06—Packaging elements holding or encircling completely or almost completely the bundle of articles, e.g. wrappers
    • B65D71/08—Wrappers shrunk by heat or under tension, e.g. stretch films or films tensioned by compressed articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2571/00—Bundles of articles held together by packaging elements for convenience of storage or transport, e.g. portable segregating carrier for plural receptacles such as beer cans, pop bottles; Bales of material
    • B65D2571/00006—Palletisable loads, i.e. loads intended to be transported by means of a fork-lift truck
    • B65D2571/00012—Bundles surrounded by a film
    • B65D2571/00018—Bundles surrounded by a film under tension
    • B65D2571/00024—Mechanical characteristics of the shrink film

Definitions

  • the invention relates to Petri dishes with ready-to-use culture media, wherein several dishes stacked one above the other are packed in shrink films.
  • Petri dishes made of polystyrene which are available in two basic types, with and without ventilation cams on the lid, are used almost exclusively in the industrial production of nutrient media in petri dishes.
  • the nutrient media in the Petri dishes are usually gels with a very high water content.
  • gelling agents such. B. agar-agar, gelatin, carrageenan, agarose or silica gels are used. The most common gelling agent is agar.
  • syneresis water often forms on the gel.
  • Condensed water and since the shells, especially those with ventilation cams, do not close tightly, condensed water or synergistic water can be stored, especially when the shells are temporarily stored on the side, e.g. B. during transport, reach the outside. Any microbiological contamination present in the shell can be carried along with the water.
  • germs can get into the bowl from the outside of the bowl via a water bridge and contaminate the nutrient medium.
  • the type of packaging of Petri dishes with nutrient media thus contributes significantly to the quality of the nutrient media in the Petri dishes; it has to fulfill two main tasks, the contamination protection of the shells and the protection against rapid drying and spoilage of the finished nutrient medium.
  • the individual banding of Petri dishes with nutrient media using a relatively water vapor-tight adhesive tape guarantees, depending on the composition of the nutrient medium, that the products have a good shelf life over several months in cool storage.
  • Microbiological contamination which may be present in a bowl, is limited to this bowl due to the dense banding. Due to the tight-fitting banderole, microbiological contamination cannot come from outside to inside or from inside to outside long. However, removing the banderole before use is very tedious and time-consuming. After removing the banderole, the circumference of the lid and base part of the Petri dish is sticky, which many users find annoying.
  • the durability of the nutrient media can be greatly influenced by the choice of the bag material (e.g. water vapor permeability, gas permeability) and the sealing of the bag.
  • the consumer can remove the Petri dishes with nutrient media directly from the bag without further manipulation of the dishes, but the individual dishes in the bag are not sealed against each other.
  • a strong condensation film often forms on the inside of the bag when the temperature fluctuates. Under unfavorable conditions, this condensed water can transport microbiological contamination present in the bag through the entire bag. Despite extensive precautionary measures in the production of Petri dishes with nutrient media, microbiological contamination in the bag can never be excluded.
  • the Petri dishes with ready-to-use nutrient media in the bag are not sealed against each other as in the case of single banding, microbiological contamination in condensate, syneresis water or air in individual dishes can easily move from dish to dish, which leads to contamination of all ready-made nutrient media in the bag in a short time can.
  • the microbiological risk of contamination is particularly high when packaging bags, e.g. if during transport, the Petri dishes with ready-made nutrient media lie on their side and the lids lift off from the base part a little.
  • the object of the invention was to pack and provide Petri dishes with ready-to-use nutrient media in such a way that the dishes offer significant improvements in quality and handling in addition to the combination of the advantages of the packaging systems described and at the same time eliminating the disadvantages.
  • the invention relates to Petri dishes with ready-to-use nutrient media, which are characterized in that several dishes are packed in shrink films in such a way that the film lies tightly against the edges of the covers which overlap the base parts of the dishes and on the end faces of the stack, so that the individual dishes are firmly fixed in the stack and sealed against each other.
  • Another object of the invention relates to the use of shrink films for packaging stacked Petri dishes with ready-to-use nutrient media.
  • the choice of film material influences the shelf life of the nutrient media in the Petri dishes. Depending on the desired maximum shelf life of the ready-to-use nutrient media, a film with a greater or lesser water vapor permeability is selected.
  • the shelf life of ready-to-use nutrient media in Petri dishes is essentially determined by the shelf life of sensitive ingredients in the ready-to-use culture media and the degree of drying of the gels. The degree of drying of the finished nutrient medium depends on the water vapor permeability of the packaging material and the storage conditions.
  • the shelf life of the finished nutrient media is mainly determined by the durability of the ingredients in the nutrient media; with cool storage it is about 2 - 4 months.
  • the shelf life essentially depends on the degree of drying of the nutrient medium in the Petri dishes. Depending on the choice of packaging material, the shelf life can be between 2 months and 24 months.
  • Suitable shrink films in the sense of the invention are e.g. those made of polyvinyl chloride, polyvinylidene chloride, polyethylene, polypropylene, polyethylene terephthalate or copolymers e.g. from vinyl chloride and vinylidene chloride, vinyl chloride and vinyl acetate, ethylene and vinyl acetate, etc.
  • shrink films made from polyvinyl chloride, polyvinylidene chloride, polyethylene or from a vinyl chloride-vinylidene chloride copolymer are used.
  • the thickness of the foils should be in the range from about 10 to 50 ⁇ m, preferably from about 15 to 35 ⁇ m.
  • a 30 pm thick polyvinyl chloride shrink film for example, a nutrient medium in Petri dishes with agar agar as a gelling agent after 2 - 3 months storage at room temperature or after 6 - 8 months storage at 10 - 14 0 only slight tendencies to dry out.
  • the layer thickness of the gel has only minimally decreased compared to the fresh state.
  • any number of Petri dishes with ready-to-use nutrient media can be packed in a stack, expediently approximately 5 or 10 dishes are packed together.
  • the diameter of the Petri dishes is between 35 and 150 mm, depending on the area of application and design.
  • the diameter of the petri dishes usually used in microbiology is around 90 mm.
  • FIG. 1 shows a view of 5 packed Shells
  • FIG. 2 shows a detail from FIG. 1
  • FIG. 3 shows a top view.
  • the shrink film (1) lies closely on the side of the lid (2) of the trays and on the 'end face (4) of the stack and seals the individual trays in the stack from one another in a relatively liquid-tight and air-tight manner.
  • the conditions of the shrinkage can be chosen so that the film also lies firmly against the side edge of the base part (3); however, this is not absolutely necessary because the individual shells are sealed to one another - already by the film lying tightly against the side edge of the lid (2) and on the end faces (4) of the stack (FIGS. 1, 2).
  • the Petri dishes are packed in a shrink wrap in such a way that the Petri dishes filled with nutrient medium are stacked after the ready-to-use nutrient medium has solidified and are then stacked in 5 or 10 pieces and then fed to a packaging machine adapted to the special requirements.
  • the packaging machine the stacks are first placed between two shrink films pulled off a roll. Welding the two foils creates a piece of tubing that is tight around the stack and open on the end faces.
  • the film is shrunk while rotating the stack of dishes in a hot air stream, whereby it lies close to the surface of the Petri dishes.
  • the short dwell time of less than 3 seconds, there is only a very slight increase in the temperature of the nutrient media in the petri dishes despite a hot air temperature of 150-250 °.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Apparatus Associated With Microorganisms And Enzymes (AREA)
EP83101087A 1982-02-18 1983-02-05 Boíte de pétri avec médium prêt à l'usage Withdrawn EP0087031A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3205756 1982-02-18
DE19823205756 DE3205756A1 (de) 1982-02-18 1982-02-18 Petrischalen mit gebrauchsfertigen naehrboeden

Publications (2)

Publication Number Publication Date
EP0087031A2 true EP0087031A2 (fr) 1983-08-31
EP0087031A3 EP0087031A3 (fr) 1984-08-01

Family

ID=6156040

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83101087A Withdrawn EP0087031A3 (fr) 1982-02-18 1983-02-05 Boíte de pétri avec médium prêt à l'usage

Country Status (3)

Country Link
EP (1) EP0087031A3 (fr)
JP (1) JPS58155080A (fr)
DE (1) DE3205756A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008125763A1 (fr) * 2007-02-27 2008-10-23 bioMérieux Film polyamide enduit pour l'ensachage de produits a duree de conservation prolongee
WO2015092328A1 (fr) * 2013-12-20 2015-06-25 bioMérieux Utilisation de film polymere pour l'emballage de milieu de culture
WO2018015310A1 (fr) * 2016-07-20 2018-01-25 Xebios Diagnostics Gmbh Pack

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4940141A (en) * 1989-01-17 1990-07-10 Terry Philpot Shrinkwrap beverage pack

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1191287B (de) * 1963-07-30 1965-04-15 Forgrove G M B H Verpackungs U Verpackung und Verfahren zum Herstellen derselben
US3410396A (en) * 1965-06-15 1968-11-12 Meyer Geo J Mfg Co Article and tray package
US3664062A (en) * 1970-09-29 1972-05-23 Geo J Ball Inc Plant tray unit and shipping package
US3716133A (en) * 1971-02-10 1973-02-13 Salsbury Lab Package for frangible articles
DE2536267A1 (de) * 1974-08-14 1976-02-26 Bakelite Xylonite Ltd Doppelt eingewickelte packungen und verfahren zu ihrer herstellung
US4054207A (en) * 1976-05-10 1977-10-18 Reynolds Metals Company Package construction
FR2426557A1 (fr) * 1978-05-26 1979-12-21 Thimon Ets Procede et installation pour recouvrir la face externe d'un produit en forme de tore avec un film en matiere plastique thermoretractable

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008125763A1 (fr) * 2007-02-27 2008-10-23 bioMérieux Film polyamide enduit pour l'ensachage de produits a duree de conservation prolongee
US8286407B2 (en) 2007-02-27 2012-10-16 Biomerieux Coated polyamide film for bagging products with extended shelf life
CN101622306B (zh) * 2007-02-27 2012-12-05 生物梅里埃公司 用于包装具有长保存期限的产品的涂层聚酰胺膜
WO2015092328A1 (fr) * 2013-12-20 2015-06-25 bioMérieux Utilisation de film polymere pour l'emballage de milieu de culture
FR3015438A1 (fr) * 2013-12-20 2015-06-26 Biomerieux Sa Utilisation de film polymere pour l'emballage de milieu de culture
EP3450330A1 (fr) * 2013-12-20 2019-03-06 bioMérieux Utilisation de film polymère pour l'emballage de milieu de culture
US10538067B2 (en) 2013-12-20 2020-01-21 Biomerieux Use of polymer film for packaging a culture medium
WO2018015310A1 (fr) * 2016-07-20 2018-01-25 Xebios Diagnostics Gmbh Pack
US11066631B2 (en) 2016-07-20 2021-07-20 Xebios Diagnostics Gmbh Pack

Also Published As

Publication number Publication date
DE3205756A1 (de) 1983-08-25
JPS58155080A (ja) 1983-09-14
EP0087031A3 (fr) 1984-08-01

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

Designated state(s): DE FR GB IT

PUAL Search report despatched

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Ipc: B65D 71/08

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Effective date: 19841208

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18W Application withdrawn

Withdrawal date: 19851023

RIN1 Information on inventor provided before grant (corrected)

Inventor name: GUNKEL, WERNER

Inventor name: KAPPNER, MANFRED, DR.

Inventor name: TRINKAUS, WINFRIED