EP0997395B1 - Procédé de fabrication d'un élément d'emballage pour produits, dispositifs de fabrication, élément d'emballage et emballage correspondants - Google Patents
Procédé de fabrication d'un élément d'emballage pour produits, dispositifs de fabrication, élément d'emballage et emballage correspondants Download PDFInfo
- Publication number
- EP0997395B1 EP0997395B1 EP99460055A EP99460055A EP0997395B1 EP 0997395 B1 EP0997395 B1 EP 0997395B1 EP 99460055 A EP99460055 A EP 99460055A EP 99460055 A EP99460055 A EP 99460055A EP 0997395 B1 EP0997395 B1 EP 0997395B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- packaging element
- products
- packaging
- micro
- approximately
- 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.)
- Revoked
Links
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
- B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D81/24—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants
- B65D81/26—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants with provision for draining away, or absorbing, or removing by ventilation, fluids, e.g. exuded by contents; Applications of corrosion inhibitors or desiccators
- B65D81/263—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants with provision for draining away, or absorbing, or removing by ventilation, fluids, e.g. exuded by contents; Applications of corrosion inhibitors or desiccators for ventilating the contents
-
- 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
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/38—Packaging materials of special type or form
-
- 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
- B65D2565/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D2565/38—Packaging materials of special type or form
- B65D2565/381—Details of packaging materials of special type or form
- B65D2565/388—Materials used for their gas-permeability
Definitions
- the field of the invention is that of the production of elements packaging.
- the invention relates to a method of manufacturing a packaging element for products, a manufacturing device, an element packaging and corresponding packaging.
- fruits and vegetables are displayed at the display without packaging.
- the presentation of fruit and vegetables without packaging is not very interesting. Indeed, fruits and vegetables removed from their natural environment, continue to breathe and exchange certain substances with the atmosphere surrounding. Thus, in high metabolic activity, fruits and vegetables are dry out by decreasing in size, or even degrade relatively quickly. Such drying does not make them more presentable or even unsuitable for consumption. Indeed, drying can even give rise to a deterioration of fruits and vegetables due to the fact that they have consumed their ultimate resources. It is therefore interesting to provide techniques preserving their resources to increase their duration conservation.
- This solution recommends the use of non-perforated polymers for pack fruits and vegetables.
- the polymers used in this solution must imperatively have natural porosity properties, so as to control flows oxygen, carbon dioxide and water vapor.
- a lack of oxygen leads, in packaging, anaerobic metabolism and water vapor retention increases the rate of deterioration of fruits and vegetables, which produces the effect opposite of the one sought.
- the present invention aims in particular to overcome these different disadvantages of the state of the art.
- one of the objectives of the present invention is to provide a method of manufacturing a packaging element allowing the products packed in it to optimize their exchange of substances with the outside, and in particular to allow better permeability to water vapor, without cause in the case of certain products their dehydration.
- An additional objective of the invention is to provide packaging allowing packaged products to increase their shelf life and therefore their shelf life, and more effectively compared to the state of the technical.
- Another objective of the invention is to provide a manufacturing device a packaging element allowing the implementation of the the invention.
- Yet another object of the invention is to provide such a device optimizing the manufacturing costs of a packaging element.
- the general principle of the invention therefore consists in combining two ranges precise on the one hand the average surface of each of the microperforations, and on the other hand the density of microperforations practiced in the packaging element.
- microperforations can occur in any type of geometric shapes as long as their average surface remains understood in the range given above.
- the surface range of the microperforations practiced in the packaging element being medium, certain microperforations may present a surface slightly greater than the upper bound while others may have a surface slightly smaller than the lower bound of this average surface range.
- microperforations practiced in a complex packaging element i.e. consisting of at least two layers
- material (x) pass completely through the packaging element (and not only certain layer (s) of material (s)).
- the material (s) constituting the packaging element can (very) depend in particular on the nature of the product (s) to be packaged and / or of the weight presented by the latter.
- said microperforations have a shape circular, with an average diameter between about 110 ⁇ m and 400 ⁇ m.
- the microperforations are circular and of a diameter minimal facilitates the flow of substances, including that of water vapor, between the packaged product (s) and the outside environment.
- the fact that the microperforations are circular and have a minimum diameter reduces the risk of obstruction, in particular by capillarity of the condensation water.
- mechanical means with spikes are used hot to perform said microperforation step of said element packaging.
- the temperature said hot tips is between about 200 ° C and 700 ° C.
- the temperature of the hot tips is a function in particular of the nature of the packaging element to be perforated. So the temperature of hot tips for perforating for example a polyester complex will be more higher than that required to perforate a polypropylene film.
- said packaging element has a permeability to water vapor of less than 800 gm -2 day -1 , said permeability to water vapor being measured at 25 ° C. with relative humidity. 75%.
- the permeability to water vapor is a function of the area of microperforations as well as the nature of the material (s) constituting the packaging element.
- this vapor permeability of water is selected in close relation to the nature of the product (s) to pack, and the amount of water vapor it should be able to release.
- said packaging element has an oxygen permeability of between approximately 1,000 and 200,000 ml m -2 day -1 bar -1 (atmosphere -1 ), said permeability to oxygen being measured at 25 ° C with a relative humidity of 75%.
- oxygen permeability is dependent on the area of microperforations.
- the oxygen permeability is chosen according to the nature of the product (s) to be packaged, which has (have) a more or less need for breathing important.
- said packaging element has a permeability to carbon dioxide of between approximately 3000 and 200,000 ml m -2 day -1 bar -1 (atmosphere -1 ), said permeability to carbon dioxide measured at 25 ° C with a relative humidity of 75%.
- permeability to carbon dioxide depends on the area of pinholes. This permeability to carbon dioxide is also chosen depending on the nature of the product (s) to be packaged, which has (have) a need for more or less important breathing.
- said method further comprises a step of coating of said packaging element with at least one coating providing at least one characteristic specific to said element packaging.
- the invention more generally applies to the packaging of any type of product having at least one release of a substance to the external environment and / or on the contrary consuming a substance from the outside environment.
- the invention further relates to a packaging element for products produced following the implementation of the process explained above.
- the invention also covers a packaging of products comprising at least one packaging element produced according to the process detailed above
- said packaging also comprises at least one support element.
- the invention therefore relates to a method of manufacturing an element product packaging to extend shelf life of product (s) packaged using, at least in part, a component packaging.
- a perforation step is carried out in the element packaging, to allow the packaged product (s) to breathe (see FR 2345360A and US 5554250A, for example).
- microperforations can be included in ranges slightly lower and / or higher than those data above.
- microperforations have a circular shape, with an average diameter of between about 110 ⁇ m and 400 ⁇ m. This has the advantage of having a better flow of water vapor between the inside and outside of the packaging element and therefore avoids any obstruction of microperforations which could cause drop in permeability to the different "vital" substances of the product (s) packed (s).
- microperforations can be arranged so as to show consistency in the number of microperforations per unit area.
- the packaged product (s) can breathe, evenly, over any its exterior surface (s).
- microperforations are, by example, placed at the intersection of two sets of lines, each set of lines having parallel lines between them, so as to obtain a regularity in the crossing of these two sets of lines.
- the packaging element is intended to wrap, at least in part, the products it contains. Consequently, the permeabilities to different substances given below are understood, when the packaging (consisting of all or part of the packaging element) is closed.
- microperforations may have permeability (s) to water vapor, and / or to oxygen, and / or carbon dioxide which slightly exceeds the ranges above, in order to adapt the one (s) as close as possible to the needs of the product (s) packaged in order to keep it longer.
- water vapor permeability may exceed slightly or even relatively strongly the upper limit of the range of permeability to water vapor indicated above.
- Such ranges on the microperforations further optimize the exchange of substances between the inside and outside of the packaging. Such a optimization of substance exchanges makes it possible to conserve even more the product (s) packaged for a long time using the packaging element.
- the packaging element consists of at least one material, such as by example, the cardboard (s), the paper (s), the polymer (s), the metal (s) ... It is clear that, in the case of metals, the thickness of this (these) is for example less than a few tens of micrometers. It is clear that it can be, in as a packaging element, a combination of several of these materials or others, so that the packaging element has a plurality of layers of materials (possibly linked together by a binding element, such as by example of glue). Note that, in the case of a combination, the microperforations pass through all of the materials in the same way. In in other words, microperforations are not only practiced in certain materials of the packaging element.
- the polymers used in the constitution of the packaging element may be polyolefins of the non-oriented type, or oriented, or bioriented.
- the polymer (s) used (s) present (s) advantageously a characteristic (s) such as, for example, being transparent and / or heat sealable and / or capable of being the subject of at least an impression.
- a characteristic such as, for example, being transparent and / or heat sealable and / or capable of being the subject of at least an impression.
- BOPP bi-oriented polypropylene
- OPA temperature polyamide oriented
- PET polyethylene terephthalate
- the packaging element may have, for example, a thickness between about 5 ⁇ m to 500 ⁇ m. In the event that several polymers are used, the packaging element may have, for example, a thickness between about 25 ⁇ m to 500 ⁇ m.
- the packaging element may be in any form and especially in the form of a film, a sachet, a tray, a box, a semi-rigid element, or rigid element.
- the packaging element can be coated with at least one coating material providing at least one characteristic specific to the packaging element. It can, for example, be a characteristic increasing protection and / or improving the presentation of the element packaging. As a feature increasing the protection provided by the packaging element for the product (s) which the latter contains, there may be mentioned, for example, the Ultra-Violet anti-fog and / or anti-radiation characteristics and / or non-stick. It is clear that the coating material (s) used do not must not influence the permeability of the "vital" substances of the packaged product (s).
- the invention also relates to a device for manufacturing an element packaging for products.
- the temperature of the hot tips can be for example between approximately 200 ° C and 700 ° C. It is clear that the temperature is chosen according to the material (s) constituting the packaging element and may extend beyond, for example, the order of a few degrees from the range given above. To maintain a constant temperature of hot tips to obtain reproducibility regular in the dimensioning of microperforations, hot tips undergo, for example, interior and / or exterior heating by means of resistor (s).
- the invention also relates to the packaging element resulting from the process described above.
- the invention also relates to a packaging made from at least one such packaging element.
- the packaging may also comprise at least one element forming support contributing, at least in part, to preserving the external appearance of the packaged product (s).
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Food Science & Technology (AREA)
- Packages (AREA)
- Auxiliary Devices For And Details Of Packaging Control (AREA)
- Containers And Plastic Fillers For Packaging (AREA)
- Wrappers (AREA)
- Making Paper Articles (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
- Packging For Living Organisms, Food Or Medicinal Products That Are Sensitive To Environmental Conditiond (AREA)
Description
caractérisé en ce que ladite étape de perforation consiste à réaliser dans ledit élément d'emballage des microperforations présentant :
- chacune, une surface moyenne comprise entre environ 9 500µm2 et 125000µm2 ; et
- une densité par unité de surface comprise entre 5 et 250 par m2.
- chacune, une surface moyenne comprise entre environ 17 500µm2 et 96500µm2 ; et
- une densité par unité de surface comprise entre 40 et 160 par m2.
- les cartons ;
- les papiers ;
- les polymères ;
- les métaux.
- les films ;
- les sachets ;
- les barquettes ;
- les boítes ;
- les éléments semi-rigides ;
- les éléments rigides.
- les caractéristiques anti-buées ;
- les caractéristiques anti-rayonnement Ultra Violet ;
- les caractéristiques anti-adhérentes.
- les produits nécessitant une respiration ;
- les produits présentant une microflore ;
- les produits nécessitant un apport d'oxygène ;
- les produits nécessitant une évacuation de vapeur d'eau excédentaire
- les produits nécessitant une diffusion contrôlée d'une substance se présentant sous forme gazeuse et/ou solide et/ou liquide ;
- les produits nécessitant une adhésion dudit élément d'emballage.
- chacune, une surface moyenne comprise entre environ 9 500µm2 et 125000µm2 ; et
- une densité par unité de surface comprise entre 5 et 250 par m2.
- chacune, une surface moyenne comprise entre environ 9 500µm2 et 125000µm2 ; et
- une densité par unité de surface comprise entre environ 5 et 250 par-m2.
- une perméabilité à la vapeur d'eau inférieure à 800 g m-2 jour-1;
- une perméabilité à l'oxygène comprise entre environ 1 000 à 200000 ml m-2 jour-1 bar-1 (atmosphère-1);
- une perméabilité au gaz carbonique comprise entre environ 3 000 à 200 000 ml m-2 jour-1 bar-1 (atmosphère-1).
- nécessitant une respiration, tels que, par exemple, certains produits alimentaires dont les fruits, les légumes, les plats de type quatrième gamme... ;
- présentant une microflore, tels que, par exemple, les fromages, les saucissons ... ;
- nécessitant un apport d'oxygène, tels que, par exemple, les viandes ... ;
- nécessitant une évacuation de vapeur d'eau excédentaire, tels que, par exemple, les produits de panification (pain, brioche etc...), les produits à base de céréales... ;
- nécessitant une diffusion contrôlée d'une substance se présentant sous forme gazeuse et/ou solide et/ou liquide. Une telle substance est, par exemple, un parfum, un produit d'hygiène, un insecticide ...;
- nécessitant une adhésion de l'élément d'emballage tels que, par exemple, des éléments mécaniques graissés, afin notamment d'évacuer l'air excédentaire et/ou d'éviter un contact du(des) produit(s) avec une(des) substance(s) extérieure(s) à l'emballage et/ou d'éviter une contamination de l'environnement extérieur et/ou de réduire les risques de dessèchement du(des) produit(s).
- chacune, une surface moyenne comprise entre environ 17 500µm2 et 96500µm2; et
- une densité par unité de surface comprise entre environ 40 et 160 par m2 ;
- chacune, une surface moyenne comprise entre environ 9 500µm2 et 125000µm2 ; et
- une densité par unité de surface comprise entre 5 et 250 par m2.
Claims (17)
- Procédé de fabrication d'un élément d'emballage pour produits, du type comprenant une étape de perforation dudit élément d'emballage, caractérisé en ce que ladite étape de perforation consiste à réaliser dans ledit élément d'emballage des microperforations présentant :chacune, une surface moyenne comprise entre environ 9 500µm2 et 125000µm2 ; etune densité par unité de surface comprise entre 5 et 250 par m2.
- Procédé selon la revendication 1, caractérisé en ce que lesdites microperforations présentent :chacune, une surface moyenne comprise entre environ 17 500µm2 et 96500µm2 ; etune densité par unité de surface comprise entre 40 et 160 par m2.
- Procédé selon l'une quelconque des revendications 1 et 2, caractérisé en ce que ledit élément d'emballage est constitué d'au moins un matériau appartenant au groupe comprenant :les cartons ;les papiers ;les polymères ;les métaux.
- Procédé selon la revendication 3, caractérisé en ce que ledit élément d'emballage se présente sous une forme appartenant au groupe comprenant :les films;les sachets ;les barquettes ;les boítes ;les éléments semi-rigides ;les éléments rigides.
- Procédé selon l'une quelconque des revendications 1 à 4, caractérisé en ce que lesdites microperforations présentent une forme circulaire, avec un diamètre moyen compris entre environ 110 µm et 400 µm.
- Procédé selon l'une quelconque des revendications 1 à 5, caractérisé en ce qu'on utilise des moyens mécaniques à pointes chaudes pour effectuer ladite étape de microperforation dudit élément d'emballage.
- Procédé selon la revendication 6, caractérisé en ce que la température desdites pointes chaudes est comprise entre environ 200°C et 700°C.
- Procédé selon l'une quelconque des revendications 1 à 7, caractérisé en ce que, après ladite étape de microperforation, ledit élément d'emballage présente une perméabilité à la vapeur d'eau inférieure à 800 g m-2 jour-1, ladite perméabilité à la vapeur d'eau étant mesurée à 25 °C avec une humidité relative de 75 %.
- Procédé selon l'une quelconque des revendications 1 à 8, caractérisé en ce que, après ladite étape de microperforation, ledit élément d'emballage présente une perméabilité à l'oxygène comprise entre environ 1 000 et 200 000 ml m-2 jour-1 bar-1 (atmosphèrè-1), ladite perméabilité à l'oxygène étant mesurée à 25 °C avec une humidité relative de 75 %.
- Procédé selon l'une quelconque des revendications 1 à 9, caractérisé en ce que, après ladite étape de microperforation, ledit élément d'emballage présente une perméabilité au gaz carbonique comprise entre environ 3 000 et 200 000 ml m-2 jour-1 bar-1 (atmosphère-1), ladite perméabilité au gaz carbonique étant mesurée à 25 °C avec une humidité relative de 75 %.
- Procédé selon l'une quelconque des revendications 1 à 10, caractérisé en ce qu'il comprend en outre une étape de revêtement dudit élément d'emballage au moyen d'au moins un matériau de revêtement apportant au moins une caractéristique spécifique audit élément d'emballage.
- Procédé selon la revendication 11, caractérisé en ce que ladite au moins une caractéristique spécifique appartient au groupe comprenantles caractéristiques anti-buées ;les caractéristiques anti-rayonnement Ultra Violet ;les caractéristiques anti-adhérentes.
- Procédé selon l'une quelconque des revendications 1 à 12, caractérisé en ce que lesdits produits appartiennent au groupe comprenant :les produits nécessitant une respiration ;les produits présentant une microflore ;les produits nécessitant un apport d'oxygène ;les produits nécessitant une évacuation de vapeur d'eau excédentaire ;les produits nécessitant une diffusion contrôlée d'une substance se présentant sous forme gazeuse et/ou solide et/ou liquide ;les produits nécessitant une adhésion dudit élément d'emballage.
- Dispositif de fabrication d'un élément d'emballage pour produits, ledit dispositif comprenant des pointes chaudes,
caractérisé en ce que lesdites pointes chaudes permettent d'obtenir des microperforations présentantchacune, une surface moyenne comprise entre environ 9 500µm2 et 125000µm2 ; etune densité par unité de surface comprise entre 5 et 250 par m2. - Elément d'emballage pour produits, ledit élément d'emballage comprenant des perforations,
caractérisé en ce que lesdites perforations sont des microperforations présentant :chacune, une surface moyenne comprise entre environ 9 500µm2 et 125000µm2; etune densité par unité de surface comprise entre 5 et 250 par m2. - Emballage de produits, caractérisé en ce qu'il comprend au moins un élément d'emballage réalisé selon l'une quelconque des revendications 1 à 13.
- Emballage selon la revendication 16, caractérisé en ce qu'il comprend en outre au moins un élément formant support.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9812265A FR2783738B1 (fr) | 1998-09-28 | 1998-09-28 | Procede de fabrication d'un element d'emballage pour produits, dispositifs de fabrication, element d'emballage et emballage correspondants |
FR9812265 | 1998-09-28 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0997395A1 EP0997395A1 (fr) | 2000-05-03 |
EP0997395B1 true EP0997395B1 (fr) | 2002-05-15 |
Family
ID=9531058
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99460055A Revoked EP0997395B1 (fr) | 1998-09-28 | 1999-09-15 | Procédé de fabrication d'un élément d'emballage pour produits, dispositifs de fabrication, élément d'emballage et emballage correspondants |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP0997395B1 (fr) |
AT (1) | ATE217592T1 (fr) |
AU (1) | AU5628899A (fr) |
DE (1) | DE69901477T2 (fr) |
ES (1) | ES2177210T3 (fr) |
FR (1) | FR2783738B1 (fr) |
WO (1) | WO2000018656A1 (fr) |
ZA (1) | ZA200102304B (fr) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2809380B1 (fr) * | 2000-05-24 | 2002-08-23 | Cie Franco Suisse De Faconnage | Materiau d'emballage pour la maturation controlee de produits alimentaires |
GB0123301D0 (en) * | 2001-09-28 | 2001-11-21 | Dolphin Packaging Ltd | Thermo-formed containers |
US8237084B2 (en) | 2006-12-22 | 2012-08-07 | Taylor Fresh Foods, Inc. | Laser microperforated fresh produce trays for modified/controlled atmosphere packaging |
GB2453590A (en) * | 2007-10-12 | 2009-04-15 | Sharp Interpack Ltd | Packaging tray with lid having apertures |
GB0817165D0 (en) | 2008-09-19 | 2008-10-29 | Nature Delivered Ltd | Food delivery packaging and process |
EP2963177A1 (fr) | 2014-07-04 | 2016-01-06 | Danapak Flexibles A/S | Feuille d'emballage pour emballer du fromage, procédés de fabrication et d'emballage associés |
CN114007941A (zh) | 2019-06-12 | 2022-02-01 | 珀弗泰科有限公司 | 用于保存呼吸农产品的包装物和方法 |
NL2024761B1 (en) * | 2019-06-12 | 2021-01-21 | Perfo Tec B V | Package for preserving respiring produce and method |
NL2027105B1 (en) | 2020-12-14 | 2022-07-08 | Perfo Tec B V | Package for preserving respiring produce and method |
NL2027106B1 (en) | 2020-12-14 | 2022-07-08 | Perfo Tec B V | Package comprising a tray for preserving respiring produce and method |
NL2029437B1 (en) | 2021-10-15 | 2023-05-16 | Perfo Tec B V | Package for preserving respiring produce and method |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2205042A5 (en) * | 1972-10-27 | 1974-05-24 | Cellophane Sa | Oven bake plastic food packs - with microperforations to vent the pack without loss of liquid |
FR2345360A1 (fr) * | 1976-03-25 | 1977-10-21 | Cellophane Sa | Emballage complexe pour le conditionnement de produ its pourvus d'une flore microbienne |
NL8600377A (nl) * | 1986-02-14 | 1987-09-01 | Stork Perforated Products | Werkwijze voor het regelen van de milieuomstandigheden in de nabijheid van gewas of oogst met behulp van schermfoelies, schermfoelie voor toepassing bij deze werkwijze alsmede foelie omvattende afscherminrichting. |
FR2609930A1 (fr) * | 1987-01-26 | 1988-07-29 | Richard Laleu Ets | Film plastique permeable pour l'emballage de produits alimentaires et son procede d'obtention |
FR2633547A1 (fr) * | 1988-06-30 | 1990-01-05 | Rhone Poulenc Films | Procede de microperforation de pellicules thermoplastiques par ultrasons |
US5405561A (en) * | 1993-08-31 | 1995-04-11 | Dowbrands L.P. | Process for microperforating zippered film useful for manufacturing a reclosable zippered bag |
-
1998
- 1998-09-28 FR FR9812265A patent/FR2783738B1/fr not_active Expired - Fee Related
-
1999
- 1999-09-15 AU AU56288/99A patent/AU5628899A/en not_active Abandoned
- 1999-09-15 ES ES99460055T patent/ES2177210T3/es not_active Expired - Lifetime
- 1999-09-15 EP EP99460055A patent/EP0997395B1/fr not_active Revoked
- 1999-09-15 WO PCT/FR1999/002198 patent/WO2000018656A1/fr active Application Filing
- 1999-09-15 AT AT99460055T patent/ATE217592T1/de active
- 1999-09-15 DE DE69901477T patent/DE69901477T2/de not_active Expired - Fee Related
-
2001
- 2001-03-20 ZA ZA200102304A patent/ZA200102304B/en unknown
Also Published As
Publication number | Publication date |
---|---|
ES2177210T3 (es) | 2002-12-01 |
AU5628899A (en) | 2000-04-17 |
WO2000018656A1 (fr) | 2000-04-06 |
FR2783738B1 (fr) | 2000-11-24 |
ZA200102304B (en) | 2001-11-06 |
EP0997395A1 (fr) | 2000-05-03 |
FR2783738A1 (fr) | 2000-03-31 |
ATE217592T1 (de) | 2002-06-15 |
DE69901477D1 (de) | 2002-06-20 |
DE69901477T2 (de) | 2003-01-16 |
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