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 packing.
• 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 packing.
• 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 days -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 atmosphere -1 , said oxygen permeability 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 atmosphere -1 , said permeability to carbon dioxide being measured at 25 ° C. with a relative humidity of 75%.
• permeability to carbon dioxide depends on the area of microperforations. 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 packing.
• 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 packing.
• a perforation step is carried out in the element packaging, to allow the packaged product (s) to breathe.
• 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.
• 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 packing. 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 resistance (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)
• 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)
• Containers And Plastic Fillers For Packaging (AREA)
• Wrappers (AREA)

Applications Claiming Priority (2)

Publications (2)

Family

ID=9531058

Family Applications (1)

Country Status (8)

Cited By (1)

Families Citing this family (10)

Citations (6)

• 1998
  • 1998-09-28 FR FR9812265A patent/FR2783738B1/fr not_active Expired - Fee Related
• 1999
  • 1999-09-15 DE DE69901477T patent/DE69901477T2/de not_active Expired - Fee Related
  • 1999-09-15 AU AU56288/99A patent/AU5628899A/en not_active Abandoned
  • 1999-09-15 WO PCT/FR1999/002198 patent/WO2000018656A1/fr active Application Filing
  • 1999-09-15 EP EP99460055A patent/EP0997395B1/de not_active Revoked
  • 1999-09-15 ES ES99460055T patent/ES2177210T3/es not_active Expired - Lifetime
  • 1999-09-15 AT AT99460055T patent/ATE217592T1/de active
• 2001
  • 2001-03-20 ZA ZA200102304A patent/ZA200102304B/en unknown

Patent Citations (6)

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