FR2505251A1 - Packaging foil for soft edible fats - comprises oriented sheet of pref. olefin! (co)polymer contg. solid particles and vacuoles - Google Patents

Packaging foil for soft edible fats - comprises oriented sheet of pref. olefin! (co)polymer contg. solid particles and vacuoles Download PDF

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Publication number
FR2505251A1
FR2505251A1 FR8207961A FR8207961A FR2505251A1 FR 2505251 A1 FR2505251 A1 FR 2505251A1 FR 8207961 A FR8207961 A FR 8207961A FR 8207961 A FR8207961 A FR 8207961A FR 2505251 A1 FR2505251 A1 FR 2505251A1
Authority
FR
France
Prior art keywords
packaging
packaging sheet
sheet according
solid particles
vacuoles
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.)
Granted
Application number
FR8207961A
Other languages
French (fr)
Other versions
FR2505251B3 (en
Inventor
Harald Schenk
Alfred Schad
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.)
Hoechst AG
Original Assignee
Hoechst AG
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 Hoechst AG filed Critical Hoechst AG
Publication of FR2505251A1 publication Critical patent/FR2505251A1/en
Application granted granted Critical
Publication of FR2505251B3 publication Critical patent/FR2505251B3/fr
Granted legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • 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
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/514—Oriented
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2311/00—Metals, their alloys or their compounds
    • B32B2311/24—Aluminium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2439/00—Containers; Receptacles
    • B32B2439/70—Food packaging

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)
  • Wrappers (AREA)

Abstract

Packaging foil for soft edible fats comprises an oriented sheet of synthetic material contg. solid particles which are finely distributed, and vacuoles. Pref. the solid particles are of size 0.2-20 microns and form 1-25wt.% of the synthetic prod. For packaging butter, margarines, lard, etc. The foil adheres weakly to fats, has better tear strength than prior art packaging materials and is easy to fold, the folds being resistant to packaging operations.

Description

L'invention concerne une feuille d'emballage pour graisses alimentaires molles, telles que le beurre, la margarine, le saindoux etc... The invention relates to a packaging sheet for soft edible fats, such as butter, margarine, lard, etc.

Dans la pratique, ces graisses alimentaires sont emballées soit dans des conteneurs ou récipients du type godet en carton portant un revêtement, soit dans des récipients en matière synthétique ou en papier cristal soit encore dans un emballage réalisé à partir d'une feuille d'aluminium mariée à un papier parcheminé. In practice, these edible fats are packaged either in containers or receptacles of the cardboard cup type carrying a coating, or in receptacles made of synthetic material or of crystal paper or else in a packaging produced from aluminum foil. married to a parchment paper.

Ces récipients et conditionnements similaires présentent des touts de fabrication nettement plus élevés que les feuilles d'emballage plates et exigent pour leur gerbage, tant à vide que remplis, une place beaucoup plus importante que celles-ci. These receptacles and similar packaging have a significantly higher manufacturing total than flat packaging sheets and require for their stacking, both empty and filled, a much larger place than these.

L'inconvénient de ces feuilles d'emballage réside dans la grande adhérence qu'elles offrent aux graisses emballées. En effet, lors du déballage, il apparaît qu'une quantité plus ou moins importante de graisse, variant en fonction de la température ambiante et de sa consistance spécifique, reste "collée1, à la feuille d'emballage. The disadvantage of these packaging sheets lies in the great adhesion that they offer to packaged fats. In fact, during unpacking, it appears that a greater or lesser amount of grease, varying according to the ambient temperature and its specific consistency, remains "stuck" on the packaging sheet.

Un autre inconvénient est celui de la faible résistance à la déchirure de cette feuille, ce qui fait que les opérations d'emballage ou de stockage provoquent des déchirures, notamment à la hauteur des angles. Ces déchirures facilitent également la deshydratation du produit emballé au niveau de ces déchirures, notamment du beurre, qui prend alors un goût de rance. Another drawback is that of the low tear resistance of this sheet, which means that the packaging or storage operations cause tears, in particular at the level of the corners. These tears also facilitate the dehydration of the packaged product at the level of these tears, in particular of the butter, which then takes on a rancid taste.

I1 incombe ainsi à l'invention de produire une feuille d'emballage qui offre une faible adhérence aux graisses, qui présente une plus grande résistance aux déchirures que les emballages utilisés Jusqu'à présent et qui se plie facilement. It is therefore incumbent on the invention to produce a packaging sheet which offers poor adhesion to grease, which has greater resistance to tearing than the packaging used up to now and which can be folded easily.

Ce problème est résolu par une feuille d'emballage caractérisée en ce que'elle est constituée d'une feuille orientée en matière synthétique qui comporte des particules solides, finement réparties, ainsi que des vacuoles. This problem is solved by a packaging sheet characterized in that it consists of an oriented sheet of synthetic material which contains solid particles, finely distributed, as well as vacuoles.

Les vacuoles sont des micro-alvéoles qui apparaissent dans la feuille en matière synthétique sots I'effet de certaines conditions d'étirage, notamment en arrêtant le drapage et en ajoutant certains produits insolubles dans les polymères. Vacuoles are micro-cells which appear in the plastic sheet without the effect of certain stretching conditions, in particular by stopping draping and by adding certain products which are insoluble in polymers.

I1 est surprenant de constater que ce sont précisément les feuilles en polyoléfines qui offrent aux graisses emballées une adhérence de loin inférieure à celle de tous les autres embal lages traditionnels utilisés jusqu'à présent. It is surprising to note that it is precisely the polyolefin sheets which offer the packaged fats far less adhesion than that of all the other traditional packaging used up to now.

En utilisant des produits minéraux, tels que des sels de calcium, du TiO2, des silicates etc..., la grosseur des particules se situe entre 0,2 o et 20 e et la quantité du produit ajouté entre 1 et 25% en poids rapporté au poids du produit synthétique. When using mineral products, such as calcium salts, TiO2, silicates, etc., the size of the particles is between 0.2 and 20% and the amount of product added is between 1 and 25% by weight. based on the weight of the synthetic product.

Quoique toutes les feuilles en matière synthétique comportant des vacuoles peuvent être utilisées, il s'est établi, dans la pratique, un avantage très net en faveur de feuilles synthétiques réalisées à partir d'un polymère ou d'un copolymère d'une cyZoléfine contenant 2 à 4 atomes de carbone, voire de copolymères d'α-oléfines contenant de 2 à 4 atomes de carbone et de préférence à partir d'un polymère de propylène et d'éthylène présentant une répartition essentiellement statistique des comonomères. Although all sheets of synthetic material containing vacuoles can be used, there has been established, in practice, a very clear advantage in favor of synthetic sheets made from a polymer or a copolymer of a cyZolefin containing 2 to 4 carbon atoms, or even copolymers of α -olefins containing from 2 to 4 carbon atoms and preferably from a polymer of propylene and ethylene having an essentially statistical distribution of the comonomers.

De préférence, la feuille est soumise à un drapage biaxial, ce qui lui confère une haute résistance dans les deux sens du plan de la feuille. Preferably, the sheet is subjected to a biaxial draping, which gives it a high resistance in both directions of the plane of the sheet.

Pour atténuer encore la force de rappel de la feuille, celleci est collée, selon une forme de réalisation avantageuse, sur une feuille d'aluminium en vue d'améliorer ainsi les qualités de glissement dans les machines à emballer. To further reduce the restoring force of the sheet, this is bonded, according to an advantageous embodiment, on an aluminum sheet in order to thus improve the sliding qualities in the packaging machines.

Pour assurer une protection pratiquement totale contre la lumière, la feuille peut être métallisée. To provide almost total protection against light, the sheet can be metallized.

Les feuilles les plus couramment utilisées présentent une épaisseur de 15 à 50 t et de préférence de 20 à 30 3O/.  The most commonly used sheets have a thickness of 15 to 50 t and preferably from 20 to 30 3O /.

L'invention est commentée plus amplement ci-après en référence au dessin annexé qui en illustre divers exemples de réalisation dépourvus de tout caractère limitatif. Sur ces dessins, sur lesquels l'épaisseur de la feuille et les vacuoles ont été fortement agrandies
- la figure I illustre en coupe verticale un premier exemple
de réalisation d'une feuille d'emballage selon l'invention et
- la figure 2 illustre, également en coupe verticale, un se
cond exemple de réalisation, obtenu à partir du premier.The invention is discussed more fully below with reference to the appended drawing which illustrates various embodiments thereof which are in no way limiting. In these drawings, on which the thickness of the sheet and the vacuoles have been greatly enlarged
- Figure I illustrates in vertical section a first example
production of a packaging sheet according to the invention and
- Figure 2 illustrates, also in vertical section, a se
cond exemplary embodiment, obtained from the first.

Sur la figure 1 on voit en 7 une feuille simple munie de vacuoles 2. In FIG. 1 we see at 7 a simple sheet provided with vacuoles 2.

Sur la variante illustrée par la figure 2, la feuille simple 1 de la figure 2 a été collée sur une feuille d'aluminium 3 à l'aide d'une colle 4.  In the variant illustrated in FIG. 2, the single sheet 1 of FIG. 2 has been glued to an aluminum sheet 3 using an adhesive 4.

Il demeure bien entendu que cette invention n'est pas limitée aux exemples de réalisation décrits et représentés, mais qu'elle en englobe toutes les variantes.  It remains to be understood that this invention is not limited to the embodiments described and shown, but that it encompasses all variants thereof.

Claims (9)

REVENDICATIONS 1.- Feuille d'emballage pour graisses alimentaires molles, caractérisée en ce qu'elle est constituée d'une feuille 1 orientée en matière synthétique qui comporte des particules solides, finement réparties, ainsi que des vacuoles (2). 1.- Packaging sheet for soft edible fats, characterized in that it consists of a sheet 1 oriented in synthetic material which comprises solid particles, finely distributed, as well as vacuoles (2). 2.- Feuille d'emballage selon la revendication 7, caractérisée en ce qu'elle comporte des particules solides finement réparties, d'une granulométrie de 0,2 à 20 f représentant 1 à 25% en poids rapportés au poids du produit synthétique. 2. A packaging sheet according to claim 7, characterized in that it comprises finely distributed solid particles, with a particle size of 0.2 to 20 f representing 1 to 25% by weight relative to the weight of the synthetic product. 3.- Feuille d'emballage selon l'une des revendications 1 ou 2, caractérisée en ce qu'elle se compose d'un polymère ou d'un copolymère d'une y-oléfine contenant de 2 à 6 atomes de carbone. 3.- packaging sheet according to one of claims 1 or 2, characterized in that it consists of a polymer or a copolymer of a y-olefin containing from 2 to 6 carbon atoms. 4.- Feuille d'emballage selon l'une quelconque des revendications 1 à 3, caractérisée en ce qu'elle se compose d'un copolymère d'oC-oléfines contenant de 2 à 4 atomes de carbone. 4. A packaging sheet according to any one of claims 1 to 3, characterized in that it consists of a copolymer of oC-olefins containing from 2 to 4 carbon atoms. 5.- Feuille d'emballage selon la revendication 4, caractérisée en ce qu'elle se compose dtun copolymère de propylène et d'éthylène présentant une répartition essentiellement statistique des comonomères. 5. A packaging sheet according to claim 4, characterized in that it consists of a copolymer of propylene and ethylene having an essentially statistical distribution of the comonomers. 6.- Feuille d'emballage selon l'une quelconque des revendications 1 à 5, caractérisée en ce qu'elle a subi un drapage biaxial.  6. A packaging sheet according to any one of claims 1 to 5, characterized in that it has undergone a biaxial draping. 7.- Feuille d'emballage selon l'une quelconque des revendications 1 à 6, caractérisée en ce qu'elle est collée sur une feuille d'aluminium (3) d l'aide de cire ou à l'aide d'une colle (4). 7.- packaging sheet according to any one of claims 1 to 6, characterized in that it is bonded to an aluminum sheet (3) d using wax or using an adhesive (4). 8.- Feuille d'emballage selon la revendication 7, caractérisée en ce qu'elle se plie facilement et de manière que les plis résistent aux opérations d'emballage. 8. A packaging sheet according to claim 7, characterized in that it folds easily and so that the folds resist the packaging operations. 9.- Feuille d'emballage selon l'une quelconque des revendications 1 9 6, caractérisée en ce que son épaisseur se situe entre 15 et 50/ et de préférence entre 20 et 30 .  9. A packaging sheet according to any one of claims 1 9 6, characterized in that its thickness is between 15 and 50 / and preferably between 20 and 30.
FR8207961A 1981-05-09 1982-05-07 Packaging foil for soft edible fats - comprises oriented sheet of pref. olefin! (co)polymer contg. solid particles and vacuoles Granted FR2505251A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE8113759U DE8113759U1 (en) 1981-05-09 1981-05-09 Wrapping film for edible fats

Publications (2)

Publication Number Publication Date
FR2505251A1 true FR2505251A1 (en) 1982-11-12
FR2505251B3 FR2505251B3 (en) 1984-03-30

Family

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Family Applications (1)

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FR8207961A Granted FR2505251A1 (en) 1981-05-09 1982-05-07 Packaging foil for soft edible fats - comprises oriented sheet of pref. olefin! (co)polymer contg. solid particles and vacuoles

Country Status (4)

Country Link
CH (1) CH664944A5 (en)
DE (1) DE8113759U1 (en)
FR (1) FR2505251A1 (en)
ZA (1) ZA822648B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0206040A1 (en) * 1985-06-14 1986-12-30 Hoechst Aktiengesellschaft Synthetic gift paper
EP0216343A2 (en) * 1985-09-27 1987-04-01 Hoechst Aktiengesellschaft Plastic-metal laminate composite
EP0227037A2 (en) * 1985-12-23 1987-07-01 MITSUI TOATSU CHEMICALS, Inc. Process for producing a porous film
EP0236714A2 (en) * 1986-02-05 1987-09-16 Hoechst Aktiengesellschaft Dielectric polyolefin foil for enveloping cables
WO2014177449A1 (en) * 2013-05-02 2014-11-06 BASF Agro B.V. Packaged rodenticidal bait

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0206040A1 (en) * 1985-06-14 1986-12-30 Hoechst Aktiengesellschaft Synthetic gift paper
EP0216343A2 (en) * 1985-09-27 1987-04-01 Hoechst Aktiengesellschaft Plastic-metal laminate composite
EP0216343A3 (en) * 1985-09-27 1988-09-21 Hoechst Aktiengesellschaft Plastic-metal laminate composite
EP0227037A2 (en) * 1985-12-23 1987-07-01 MITSUI TOATSU CHEMICALS, Inc. Process for producing a porous film
EP0227037A3 (en) * 1985-12-23 1988-07-06 Mitsui Toatsu Chemicals Inc. Process for producing a porous film
US4921652A (en) * 1985-12-23 1990-05-01 Mitsui Toatsu Chemicals, Inc. Process for producing a porous film
EP0236714A2 (en) * 1986-02-05 1987-09-16 Hoechst Aktiengesellschaft Dielectric polyolefin foil for enveloping cables
EP0236714A3 (en) * 1986-02-05 1990-03-21 Hoechst Aktiengesellschaft Dielectric polyolefin foil for enveloping cables
WO2014177449A1 (en) * 2013-05-02 2014-11-06 BASF Agro B.V. Packaged rodenticidal bait
CN105072899A (en) * 2013-05-02 2015-11-18 巴斯夫农业公司 Packaged rodenticidal bait
US9809364B2 (en) 2013-05-02 2017-11-07 BASF Agro B.V. Packaged rodenticidal bait

Also Published As

Publication number Publication date
CH664944A5 (en) 1988-04-15
DE8113759U1 (en) 1981-07-30
FR2505251B3 (en) 1984-03-30
ZA822648B (en) 1983-02-23

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