FR2607110A1 - Package for a perishable product and its manufacturing method - Google Patents

Package for a perishable product and its manufacturing method Download PDF

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Publication number
FR2607110A1
FR2607110A1 FR8616230A FR8616230A FR2607110A1 FR 2607110 A1 FR2607110 A1 FR 2607110A1 FR 8616230 A FR8616230 A FR 8616230A FR 8616230 A FR8616230 A FR 8616230A FR 2607110 A1 FR2607110 A1 FR 2607110A1
Authority
FR
France
Prior art keywords
packaging
container
sheet
aluminum
plastic
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.)
Pending
Application number
FR8616230A
Other languages
French (fr)
Inventor
Michel Corbel
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.)
CELATOSE IND
Original Assignee
CELATOSE IND
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 CELATOSE IND filed Critical CELATOSE IND
Priority to FR8616230A priority Critical patent/FR2607110A1/en
Publication of FR2607110A1 publication Critical patent/FR2607110A1/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/1418Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure
    • B29C45/14221Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure by tools, e.g. cutting means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D1/00Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
    • B65D1/22Boxes or like containers with side walls of substantial depth for enclosing contents
    • B65D1/26Thin-walled containers, e.g. formed by deep-drawing operations
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D1/00Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
    • B65D1/22Boxes or like containers with side walls of substantial depth for enclosing contents
    • B65D1/26Thin-walled containers, e.g. formed by deep-drawing operations
    • B65D1/28Thin-walled containers, e.g. formed by deep-drawing operations formed of laminated material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/1418Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure
    • B29C2045/14237Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure the inserts being deformed or preformed outside the mould or mould cavity

Abstract

<P> PACKAGING FOR PERISHABLE PRODUCT, CHARACTERIZED IN THAT IT CONSISTS OF A RIGID CONTAINER 1 IN PLASTIC MATERIAL, WITH A COVERED ALUMINUM SHEET IN THE SHEET OF 2. </P>

Description

 The invention relates to a packaging for a perishable product and its manufacturing process.

 Aluminum, despite its high cost price, is used for the production of packaging for perishable products and, in particular, food products, because of its barrier properties which make the packaging oxygen-tight, water vapor, carbon dioxide, ultraviolet rays. In addition, these aluminum packaging can withstand without disadvantage the sterilization treatments required by the product contained in the packaging and all these advantages allow the production of packaging ensuring a long conservation of the product contained.

 It is thus known to produce long-term packaging in the form of flexible aluminum bags. However, to have sufficient mechanical strength and not to burst during handling and storage, the aluminum sheet must be relatively thick and be combined with plastic films forming, with the aluminum sheet, a multilayer complex .

 This type of packaging, however, has several drawbacks and, in particular, the aluminum foil of the complex can crack, as a result of the folding of the pocket, which results in the permeability of this packaging to harmful agents and, in particular, to ultraviolet radiation. .

 Also, these flexible bags are not suitable for the packaging of certain products and, in particular, of food products, because of their mode of presentation considered aesthetically not very commercial. Finally, the most important drawback of these flexible pockets lies in their very difficult opening and this due to the fact that they are flexible and that they must have a very solid closure allowing it to withstand the significant mechanical pressures which can s exercise on the packaging during handling and storage.

 To overcome the drawbacks of these flexible bags, some packaging is produced in the form of trays obtained by shaping by pleating an aluminum sheet, this sheet being, in this case, thicker in order to allow the realization of packaging which is, at least, semi-rigid. However, in practice, for the production of these trays, we are forced to make a compromise between reducing the thickness of the aluminum sheet which makes it possible to reduce the cost and increasing the thickness of this sheet. sheet, which increases the rigidity of the tray and, therefore, facilitate its handling, storage and opening by removal of a heat-sealed seal.

 The present invention aims in particular to remedy these drawbacks and for this purpose relates to a packaging for a perishable product, characterized in that it consists of a rigid plastic container, the internal face of which is covered with a sheet. aluminum formed by pleating.

 According to another characteristic of the invention, the rigid container has a peripheral rim leading to the internal face of this container, this rim being covered by the pleated edge of the shaped aluminum sheet, a cover being heat-sealed on this edge. aluminum foil.

 The invention also relates to the method for producing this packaging, a method characterized in that the forming is carried out by pleating an aluminum sheet on a punch and the shaped sheet is introduced into a mold comprising a male part and female part so that the male part is capped with the pleated aluminum sheet and the plastic is injected into the mold through the female part, so as to overmold the plastic container on the shaped aluminum foil.

The invention is shown by way of nonlimiting examples in the accompanying drawings in which
FIG. 1 is a view in axial half-section of a container according to the invention,
FIG. 2 represents the container of FIG. 1 closed by a cover,
FIG. 3 is a drawing illustrating the process of the invention, the deformable and injection mold being open,
- Figure 4 is a drawing corresponding to that of Figure 3, the mold being in the closed position.

 The object of the present invention is therefore to produce a packaging for a perishable product and, in particular, for a food product, which is inexpensive, which makes it possible to obtain a long shelf life, which makes it possible to sterilize the products which it contains, which can receive an impression of decoration and which is rigid, in order to be able to be handled and stored without risk of deterioration and in order to be able to be easily opened by removal of a heat-sealed cover.

 These results are obtained by making this packaging by the combination of a plastic container 1 (see FIG. 1), the internal face of which is covered with an aluminum sheet 2 shaped by pleating, this arrangement making it possible to works a thin and therefore inexpensive aluminum sheet, the thickness of which may be between 10 and # 50 microns.

This small thickness makes it possible to form by pleating without the folds constituting notable extra thicknesses visible to the naked eye, the multitude of coated folds formed giving the aluminum foil, seen from inside the container, a simple appearance. striated from the side walls. This absence of total rigidity of the aluminum foil is replaced by the rigidity of the plastic container 1, the wall thickness of which may however be very small, given the small local excess thickness which can be created by the coated folds of the thin aluminum foil.

This packaging may, if it must contain a food product, be used as a plate or beaker without fear that the spoons, forks or knives will catch on the folds of the aluminum foil and this taking into account its small thickness, combined with the rigidity of the outer plastic container
The plastic material used to produce the external container will be chosen from those capable of withstanding the temperatures necessary to sterilize the product contained in the packaging, the presence of this plastic material and its rigidity further making it possible to carry out its external decoration. by print.

 The plastic container 1 has, at the periphery of its opening, a flat rim 3 which terminates by its internal edge on the internal lateral wall of the container and the edge of the shaped aluminum element 2 is folded down on this flat rim 3. This arrangement allows later to fix by welding or heat sealing a cover 4 on this rim 21, the rim 3 of the rigid container 1 serving, in this case, as an intermediate support.

 The outer edge of this rim 3 has a curved extension 5 forming a latching device for a cover 6 whose periphery 61 has a shape complementary to this extension 5.

 The element 2 produced from the pleated aluminum sheet is fixed by gluing or heat-bonding to the internal face of the container 1, so that it cannot dissociate, for example when the cover is removed and also to avoid tearing the aluminum foil when using items from a table service such as a knife or fork and the packaging is used as a plate, cup, etc.

 The folds formed on the side wall of the element 2 are folds folded regularly distributed over the periphery of the element. Furthermore, the aluminum foil used comprises on its external face, coming into contact with the container 2, a lacquer or a varnish of a fusible material, which has the purpose of sticking together, by their external face, the coated folds of the aluminum sheet as well as tightly securing the external face of the pleated element 2 to the internal face of the rigid plastic container 1.

 The internal face of the aluminum foil used will include a film of heat-sealable plastic, the nature of which will be determined according to the product to be packaged, this film having the purpose of ensuring the fixing, by heat-sealing, of the cover. 4 on the rim as well as fixing the lying folds of the side wall of the element and of the rim 21 to each other.

 In the case of a packaging intended to contain a food product, the film will be made of a plastic material which is not likely to react with the food product, for example by oxidation. This film will thus preferably be made of polyester.

 Furthermore, the plastic materials used to make the container 1 and the films covering the faces of the aluminum sheet will be chosen so. to be able to withstand temperatures of around 130O so that the packaging containing its food product can be sterilized without undergoing deformation or deterioration.

 In Figures 3 and 4, there is illustrated a method for producing the packaging according to the invention.

 In this case, use is made of a barrel injection molding machine comprising two plates 7 and 8, one of which, 7, is mounted for rotation along its axis 9 and comprises punches or male parts 10 intended to cooperate with two types of housings 11 and 12 provided on the plate 8 and one of which, 11, is made of a shape and dimensions such that it is capable of cooperating with a punch 10 to ensure the forming by pleating of a complex aluminum 13. By cons, the other housing 12 is made of a shape and dimensions such that it is capable of cooperating with the punch 12 capped with the shaped aluminum element 2 from the sheet 13, in order to overmold on this element 2 the plastic material injected through the channel 14.

 This process has many advantages and, in particular, it allows the production of coated folds and it avoids the manipulations necessary for the transfer of the element 2 to the injection mold, which avoids the inevitable deformation of this element taking into account its small wall thickness.

 Also, the production of the container 1 by injection molding on the element 2 allows, taking into account the temperature and the pressure of the plastic material injected, to ensure the heat-bonding and the heat-sealing of the coated plies of the aluminum sheet. and ensuring the bonding of the external face of the element 2 to the plastic material injected to make the container 1. In addition, due to the injection pressure of the plastic material, the aluminum foil is applied strongly against the male part or punch 10, so that the folded folds of this sheet which could project inside the container, are transferred to the external side of this sheet, that is to say on the side of the container 1, so that these folds no longer form any excess thickness inside the container, these then appearing only in the form of fine striations. Also, because of this embodiment, and taking into account the small thickness of the sheet aluminum used ( for example 40 microns), the inner film of heat-sealable plastic (the thickness of which is 10 to 15 microns) forms a continuous film on the internal lateral wall of the element 2 as well as on the upper face of the rim 21. The internal face of the element 2 is therefore practically smooth, which, for the rim 21, facilitates the heat-sealing operation.

 In the embodiment shown in Figures 3 and 4, the punches 10 which cooperate successively with the hollow parts 11 and 12, are provided with ejector devices 15 which allow the ejection of the packaging after overmolding of the plastic container 2.

 Thus, each time the mold is closed (FIG. 4), the first step is the forming by pleating of the aluminum sheet and the second step, the overmolding of the container 2 on the pleated aluminum sheet shaped previous stage, while at each opening of the mold (Figure 3), an aluminum foil 13 is placed on a punch 10, while the other punch ejects, by the device 15, the packaging produced.

 Furthermore, according to an alternative embodiment, it will be possible to carry out the overmolding of the plastic material so that it covers over a small thickness the upper face of the rim the cover 4 thereafter thermosealing on this covering. This arrangement will in particular have the effect of avoiding the tearing of the aluminum sheet forming the internal face of the container during the removal of the cover, without thereby harming the barrier properties of the container taking into account the width of this rim 21 on which this covering is formed.

 Also, if this is deemed desirable, in particular for aesthetic or palatability reasons in the case of a food product, the internal face of the container may be subjected to a second overmolding operation in order to form this internal face a coating or a plastic lining. of the same or different nature from that of container 1.

Claims (7)

 1) Packaging for perishable product, characterized in that it consists of a rigid container (1) of plastic material, the internal face of which is covered with aluminum foil (2) shaped by pleating.
 2) Packaging according to claim 1, characterized in that the rigid container (1) has a peripheral rim (3) leading to the internal face of this container, this rim being covered by the pleated edge of the aluminum foil put shaped (2), a cover (4) being heat sealed on this edge of the aluminum sheet.
 3) Packaging according to claims 1 and 2, characterized in that the outer edge of the peripheral rim (3) is extended by a second rim (5) latching a cover (6).
 4) Packaging according to any one of the preceding claims, characterized in that the aluminum sheet (1) has a thickness of less than 50 microns.
 5) Packaging according to any one of the preceding claims, characterized in that the aluminum foil (2, 13) has on its outer face a heat-bonding varnish and on its inner side, a heat-sealable film.
 6) A method for producing the packaging according to any one of the preceding claims, characterized in that the forming is carried out by pleating an aluminum sheet (13) on a punch (10) and introduces the shaped sheet into a mold (7, 8) comprising a male part (10) and a female part (12) so that the male part is capped with the pleated aluminum sheet and the plastic is injected into the mold via the female part (12) so as to overmold the plastic container (1) on the shaped aluminum foil (2).
 7) A method according to claim 6, characterized in that the punch (10) for forming the aluminum sheet constitutes the male part of the injection mold, the punch capped with the pleated sheet being associated with the male part ( 12) to constitute the overmolding injection mold.
FR8616230A 1986-11-21 1986-11-21 Package for a perishable product and its manufacturing method Pending FR2607110A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8616230A FR2607110A1 (en) 1986-11-21 1986-11-21 Package for a perishable product and its manufacturing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8616230A FR2607110A1 (en) 1986-11-21 1986-11-21 Package for a perishable product and its manufacturing method

Publications (1)

Publication Number Publication Date
FR2607110A1 true FR2607110A1 (en) 1988-05-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
FR8616230A Pending FR2607110A1 (en) 1986-11-21 1986-11-21 Package for a perishable product and its manufacturing method

Country Status (1)

Country Link
FR (1) FR2607110A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2620076A1 (en) * 1987-03-31 1989-03-10 Celatose Ind Process for the production of a package, such as a packaging tray for foodstuffs
FR2777497A1 (en) * 1998-04-16 1999-10-22 Fenec Sa Machine for making items such as skates for fixing under the feet of furniture
ITMO20090017A1 (en) * 2009-01-27 2010-07-28 Claudio Chiari Container plastic barrier
WO2016207826A3 (en) * 2015-06-24 2017-02-02 E-Wenco S.R.L. Tub-like container for the containment and packaging of food, made of multilayer sheet material and related method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2210504A1 (en) * 1972-12-18 1974-07-12 Cerbo Ab
EP0132468A1 (en) * 1983-07-29 1985-02-13 Toyo Seikan Kaisha Limited Container body
EP0140282A2 (en) * 1983-10-17 1985-05-08 Showa Denko Kabushiki Kaisha Can-like container and method for manufacturing same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2210504A1 (en) * 1972-12-18 1974-07-12 Cerbo Ab
EP0132468A1 (en) * 1983-07-29 1985-02-13 Toyo Seikan Kaisha Limited Container body
EP0140282A2 (en) * 1983-10-17 1985-05-08 Showa Denko Kabushiki Kaisha Can-like container and method for manufacturing same

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2620076A1 (en) * 1987-03-31 1989-03-10 Celatose Ind Process for the production of a package, such as a packaging tray for foodstuffs
FR2777497A1 (en) * 1998-04-16 1999-10-22 Fenec Sa Machine for making items such as skates for fixing under the feet of furniture
ITMO20090017A1 (en) * 2009-01-27 2010-07-28 Claudio Chiari Container plastic barrier
WO2010086274A3 (en) * 2009-01-27 2010-11-04 Claudio Chiari Barrier-type container made of plastics
RU2515322C2 (en) * 2009-01-27 2014-05-10 Клаудио КЬЯРИ Barrier-type container made of plastic
WO2016207826A3 (en) * 2015-06-24 2017-02-02 E-Wenco S.R.L. Tub-like container for the containment and packaging of food, made of multilayer sheet material and related method

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