EP0831996A1 - Verpackungsmaterial - Google Patents
VerpackungsmaterialInfo
- Publication number
- EP0831996A1 EP0831996A1 EP96909186A EP96909186A EP0831996A1 EP 0831996 A1 EP0831996 A1 EP 0831996A1 EP 96909186 A EP96909186 A EP 96909186A EP 96909186 A EP96909186 A EP 96909186A EP 0831996 A1 EP0831996 A1 EP 0831996A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- layer
- packaging material
- plastic
- packaging
- material according
- 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.)
- Ceased
Links
- 239000005022 packaging material Substances 0.000 title claims abstract description 56
- 229920000704 biodegradable plastic Polymers 0.000 claims abstract description 29
- 229920003023 plastic Polymers 0.000 claims abstract description 24
- 239000004033 plastic Substances 0.000 claims abstract description 24
- 239000000463 material Substances 0.000 claims abstract description 21
- 238000004806 packaging method and process Methods 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 230000004888 barrier function Effects 0.000 claims description 20
- 239000011084 greaseproof paper Substances 0.000 claims description 16
- 239000000123 paper Substances 0.000 claims description 11
- 229920000747 poly(lactic acid) Polymers 0.000 claims description 9
- 229920002678 cellulose Polymers 0.000 claims description 5
- 239000005014 poly(hydroxyalkanoate) Substances 0.000 claims description 4
- 229920000903 polyhydroxyalkanoate Polymers 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- SJZRECIVHVDYJC-UHFFFAOYSA-M 4-hydroxybutyrate Chemical compound OCCCC([O-])=O SJZRECIVHVDYJC-UHFFFAOYSA-M 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims description 2
- 229920000728 polyester Polymers 0.000 claims description 2
- 239000004626 polylactic acid Substances 0.000 claims description 2
- 238000004513 sizing Methods 0.000 claims description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 11
- 239000001301 oxygen Substances 0.000 abstract description 11
- 229910052760 oxygen Inorganic materials 0.000 abstract description 11
- 239000004519 grease Substances 0.000 abstract description 10
- -1 aroma Substances 0.000 abstract description 8
- 235000013305 food Nutrition 0.000 abstract description 8
- 239000007789 gas Substances 0.000 abstract description 7
- 239000010410 layer Substances 0.000 description 88
- 239000000047 product Substances 0.000 description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 5
- 239000011888 foil Substances 0.000 description 5
- 229920000642 polymer Polymers 0.000 description 5
- 238000003475 lamination Methods 0.000 description 4
- 229920000331 Polyhydroxybutyrate Polymers 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 239000011087 paperboard Substances 0.000 description 3
- 239000005015 poly(hydroxybutyrate) Substances 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000012790 adhesive layer Substances 0.000 description 2
- 238000010009 beating Methods 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 239000002361 compost Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000004715 ethylene vinyl alcohol Substances 0.000 description 2
- 239000002650 laminated plastic Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920001610 polycaprolactone Polymers 0.000 description 2
- 239000004632 polycaprolactone Substances 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 239000002861 polymer material Substances 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 235000011888 snacks Nutrition 0.000 description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 2
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- 229920000219 Ethylene vinyl alcohol Polymers 0.000 description 1
- 241000218657 Picea Species 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 240000007591 Tilia tomentosa Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229920000229 biodegradable polyester Polymers 0.000 description 1
- 239000004622 biodegradable polyester Substances 0.000 description 1
- 235000014121 butter Nutrition 0.000 description 1
- 238000003490 calendering Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000002301 combined effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000005003 food packaging material Substances 0.000 description 1
- RZXDTJIXPSCHCI-UHFFFAOYSA-N hexa-1,5-diene-2,5-diol Chemical compound OC(=C)CCC(O)=C RZXDTJIXPSCHCI-UHFFFAOYSA-N 0.000 description 1
- 239000012263 liquid product Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 235000013310 margarine Nutrition 0.000 description 1
- 239000003264 margarine Substances 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 235000019684 potato crisps Nutrition 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 235000014347 soups Nutrition 0.000 description 1
- 235000013599 spices Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 229910021653 sulphate ion Inorganic materials 0.000 description 1
- 229920001059 synthetic polymer Polymers 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
- B32B29/00—Layered products comprising a layer of paper or cardboard
- B32B29/06—Layered products comprising a layer of paper or cardboard specially treated, e.g. surfaced, parchmentised
-
- 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
- B65D65/46—Applications of disintegrable, dissolvable or edible materials
- B65D65/466—Bio- or photodegradable packaging materials
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/80—Paper comprising more than one coating
- D21H19/82—Paper comprising more than one coating superposed
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
- D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
- D21H19/24—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H19/30—Polyamides; Polyimides
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
- D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
- D21H19/34—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising cellulose or derivatives thereof
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
Definitions
- the invention relates to packaging material comprising a basic layer of greaseproof paper coated with a layer of plastic material.
- the invention is intended especially for use as a packaging material for food products.
- Food packaging materials are required good barrier properties against gas, grease, aroma, water, and water vapour.
- Grease and aroma barriers primarily prevent evaporation of aroma or transmission of grease from the packaged product into surroundings, whereas water vapour barrier ensures that the product will not dry. Gas tightness prevents any influence of oxidation.
- following structures are used for instance in flexible packages for food products:
- the barrier properties of these products against gas, grease, aroma, water and water vapour have usually been optimized by adapting the thickness of the layers, and they usually do operate well in a number of packaging structures in respect to the aforesaid protection requirements.
- creasing and folding on the one hand and aroma tightness in humid conditions on the other form two major problem areas. Creasing may, e.g., cause cracking of the aluminum which immediately results in considerable impairment of the oxygen tight properties.
- Another example is the barrier polymer, ethylene vinyl alcohol (EVOH), nowadays much used in multi layer structures, which considerably loses its oxygen tightness when the relative humidity is high.
- EVOH ethylene vinyl alcohol
- the existing oxygen and aroma barrier structures are almost without exception multi layer laminates whose recycling is practically impossible since it is not economically beneficial either to separate or to screen the laminate layers. This is especially true of products containing aluminum foil.
- the international publication WO 91/15410 introduces a gastight packaging material that provides a barrier against evaporation of aroma or transfer of oxygen, comprising a basic layer of greaseproof paper coated with polyethylene.
- the advantage of this packaging material is said to be gas tightness and good mechanical strength, e.g., when the material is folded in connection to packaging.
- this is also a packaging material which is based on the combined effect of the protective properties of different layers.
- the packaging laminate in question does provide an adequately tight and mechanically strong structure for packaging different kinds of food products, the problem of recyclability remains because of the laminate structure of the package.
- the object of the present invention is to remove these defects and to present a packaging material with excellent barrier properties which, however, can be disposed after usage.
- the packaging material in accordance with the present invention is primarily characterized in that the plastic of the layer covering the basic layer is biodegradable plastic.
- the packaging material Since the basic materials of the packaging material are biodegradable synthetic polymers and greaseproof paper made of naturally decomposing material (cellulose), the packaging material can be composted after usage.
- the packaging material combines two extremely important requirements: on one hand, good barrier properties against oxygen, aroma, grease, and water vapour; and on the other hand, biodegradability and compostability.
- biodegradable plastics whose oxygen tightness is not influenced by growing relative humidity, and who, in connection to lamination, close the small pinholes of greaseproof paper which otherwise would impair oxygen tight properties.
- the invention has a number of embodiments, varying according to the application of the packaging material, and comprising various kinds of layers. These embodiments are described in detail undemeath. A characteristic shared by all these materials in question is that all the layers are biodegradable in appropriate environments after disposal. All the laminate structures described undemeath can be produced by the known methods of coextrusion and/or lamination.
- Fig. 1 shows a cross-sectional view of the basic idea of a packaging material in accordance with the present invention
- Fig. 2 is a second embodiment of the packaging material
- Fig. 3 is a third embodiment of the packaging material
- Fig. 4 is a fourth embodiment of the packaging material
- Fig. 5 is a fifth embodiment of the packaging material
- Fig. 6 is a sixth embodiment of the packaging material
- Fig. 7 is a seventh embodiment of the packaging material
- Fig. 8 shows a schematic diagram of one preferred method for making a packaging material in accordance with the present invention.
- the basic layer of greaseproof paper is marked with a reference number 1
- the layer of biodegradable plastic covering is marked with a reference number 2.
- the plastic layer is comprised of sublayers these have been marked with a reference number 2 and a small letter representing each sublayer.
- the basic layer 1 of the packaging material is greaseproof paper.
- Greaseproof paper is a known wrapping paper for food products and, compared to other papers made of cellulose-based pulp, it provides excellent barrier properties against grease, it is a good oxygen barrier and a gas barrier, and it thus also prevents evaporation of scent and aroma. This is accomplished by a high degree of beating of the fibrous pulp creating a tight structure.
- the above-mentioned properties of paper may have been further improved by calendering and by finishing with naturally decomposing surface sizing chemicals such as carboxymethyl cellulose (CMC) and starch.
- CMC carboxymethyl cellulose
- the basis weight of greaseproof paper may vary but is typically 30 — 100 g/m 2 .
- the raw material used is usually sulphite pulp or sulphate pulp whose degree of beating is high. Spruce sulphite pulp is a traditional raw material because of its excellent beatability properties.
- the degree of tightness (grease tightness) for the paper layer in question, expressed in Linden, may be 30—600 s, preferably 100—600 s.
- the plastic layer 2 covering the basic layer 1 is thinner and improves the gas tightness of the packaging material, and particularly provides a water vapour barrier for the packaging material.
- the plastic layer is noticeably thinner than the basic layer 1 with a basis weight varying below the weight limits of the basic layer 1.
- the basic layer 1 may either be laminated on only one side with a layer 2 of biodegradable plastic, or both sides of the basic layer 1 may be laminated.
- the layer of biodegradable plastic may comprise two or more sublayers with varying properties.
- the packaging material may comprise other layers which are all similarly compostable.
- biodegradable plastic is used for all such plastic materials whose polymer chain degrades as result of microbial activity, that is, it has a chemical structure which is inherently decomposable under suitable conditions, such as in a compost, contrary to e.g. polyethylene which has been blended with suitable materials for breaking its mechanical structure under compost conditions.
- these plastics can be molded when fluid, e.g., by extrusion, into a thin foil of only some micrometers thick.
- Figure 1 presents the simplest form of packaging material.
- the basic layer of greaseproof paper 1 has been coated by coextrusion or lamination with a layer 2 of biodegradable plastic.
- Suitable plastics are polyhydroxybutyrate (PHB), hydroxybutyric/hydroxyvaleric copolymer (HB/HB), that is, generally some polyhydroxyalkanoate containing hydroxybutyrate, as well as polycaprolactone (PCL), polylactic acid i.e. polylactide (PLA), cellulose ester, or some other suitable biodegradable plastic, such as a synthetic polyester, or a combination of these plastics.
- PHB polyhydroxybutyrate
- HB/HB hydroxybutyric/hydroxyvaleric copolymer
- PCL polycaprolactone
- PLA polylactic acid i.e. polylactide
- cellulose ester or some other suitable biodegradable plastic, such as a synthetic polyester, or a combination of these plastics.
- Figure 2 shows a packaging material with a basic layer 1 laminated also on the opposite side with a layer 2 of biodegradable plastic.
- This layer may also be of some of the above-mentioned plastics.
- These plastic layers may be identical or different in their construction.
- Figure 3 presents a packaging material with a layer 2 of biodegradable plastic comprised of two sublayers; layer 2a which is in direct contact with the basic layer 1 and is an adhesive layer; and layer 2b whose primary function is to provide a barrier layer.
- the packaging material also has excellent heat-sealing properties, appropriate friction, and other aforesaid protective properties essential in materials for food product packaging.
- Polylactide is well suitable for layer 2a and hydroxybutyrate based polyhydroxyalkanoate for layer 2b, especially HB/HV.
- Figure 4 shows a packaging material with a basic layer 1 covered with a plastic layer 2 comprised of three sublayers 2a, 2b and 2c made of biodegradable plastic.
- the inner layer 2a is an adhesive layer;
- the middle layer 2b provides an actual barrier layer which prevents transmission of different substances;
- the outer layer 2c which also forms the surface of the packaging material, is mainly chosen according to good surface properties such as heat-sealability, friction etc.
- a good solution is obtained with the combination of inner layer 2a of polylactide, middle layer 2b of polyhydroxyalkanoate, especially HB/HV, and outer layer 2c of polylactide.
- cellulose ester or a synthetic biodegradable polyester can be used.
- layer 2 of biodegradable plastic usually forms the inner product contact layer in the embodiments listed above, we have taken into consideration, when selecting the plastic layer for layer 2 in figure 1 ; plastic layer 2 on the inner surface in figure 2; layer 2b in figure 3; and layer 2c in figure 4, that these layers are in direct contact with the material packaged.
- packaging materials which comprise, in addition to the basic layer 1 and the layer 2 of biodegradable plastic, additional layers chosen primarily on the basis of the quality of the package.
- Figure 5 shows a packaging material suitable for liquid products.
- the inner surface of the basic layer 1 is coated with a layer 2 of biodegradable plastic comprised of two sublayers 2a and 2b, whose properties are chosen mainly according to the properties required of the sublayers presented in figure 3.
- One surface of the basic layer 1 is, through a layer 2 of biodegradable plastic with appropriate adhesive properties, adhered to a paperboard layer 3 which forms the body of the packaging material.
- the paperboard may be of any quality used in liquid package paperboards.
- the basis weight may vary within 100 — 500 g/m 2 .
- Figure 6 presents a packaging material for use as a wrapping paper for butter and margarine, i.e., for use of a flexible package.
- the layer 2 of biodegradable plastic is applied only on one side of the basic layer 1 and, through this plastic material, the basic layer 1 is adhered to a layer 4 which is ordinary packaging paper and improves the strength of the material by being of kraftliner for example. Greaseproof paper is thus in direct contact with the packaged product.
- the quality of the biodegradable plastic is here chosen primarily on the basis of good adhesive properties, but if the water vapour barrier properties are important for the package, these properties can be more important in the choice of plastic.
- Figure 7 shows a material similar to that in figure 6 but with a basic layer 1 of greaseproof paper laminated also on the inner surface with a layer 2 of biodegradable plastic.
- Such packaging material can be utilized in flexible packages, e.g., in packaging of snacks and potato crisps, with the advantage of good heat-sealing properties of the biodegradable plastic on the inner surface.
- One of the layers can be of PHB or HB/HV and the other of PLA.
- the purpose of layer 4 of ordinary packaging paper is to add strength to the material and provide protection from light.
- the outer surface of this layer provides an excellent printing surface.
- the paper can be for example
- the flexible package we have described can well be used to replace, e.g., aluminum foil packages.
- Coextruder 5 comprises a known feed block 6 in which melted polymer material A, B, C, which will form the different layers, is fed.
- the polymer material is biodegradable plastic.
- Feed block 6 then organizes the material into layers one upon another in desired order after which the forming die 7 spreads the layers into a foil of full width which forms the layer 2 of biodegradable plastic described above.
- Greaseproof paper is deposited from its own roll into the nip between the compactor roll 8 and support roll 9, into which nip also the foil from the extruder is led.
- layer 2 of biodegradable plastic adheres to the surface of the basic layer 1 and the completed material is guided along the surface of the support roll 9 for further preparation, e.g., reeling, or lamination on the other surface with similar equipment.
- a product in accordance with figure 6 can be produced by depositing the web which forms the additional layer 4 from its own roll 10 between the compactor roll 8 and the support roll 9, as illustrated with a broken line in the diagram.
- the packaging material exhibits excellent oxygen barrier properties.
- the OTR - values (oxygen transmission rate) of the greaseproof paper representing these properties may be above 1000 cm 3 /m 2 , 24h, 1 bar.
- the OTR - values are accordingly 100 — 1000 expressed in the same standard units.
- the OTR - values for a layered product consisting of the basic layer and a biodegradable plastic layer are as low as 10 at the most, for example in the range of 1 — 10. This proves that, in addition to compostability, a packaging material in accordance with the present invention has at least as good properties as the packaging materials we already know.
- the packaging material according to the present invention is particularly suitable for packaging of food products. These packages may be, depending on the quality of the material, various kinds of consumer or large-scale consumer packages. Suitable materials to be packaged include powders which contain grease - such as dry soups - as well as spices, snacks and liquids, in addition to food products, the packaging material may be utilized in packaging of pharmaceutics, cosmetics and toiletries, such as soap.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wrappers (AREA)
- Laminated Bodies (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI951637A FI951637A (fi) | 1995-04-06 | 1995-04-06 | Pakkausmateriaali |
FI951637 | 1995-04-06 | ||
PCT/FI1996/000184 WO1996031303A1 (en) | 1995-04-06 | 1996-04-04 | Packaging material |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0831996A1 true EP0831996A1 (de) | 1998-04-01 |
Family
ID=8543194
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96909186A Ceased EP0831996A1 (de) | 1995-04-06 | 1996-04-04 | Verpackungsmaterial |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0831996A1 (de) |
JP (1) | JPH11509142A (de) |
AU (1) | AU5277696A (de) |
FI (1) | FI951637A (de) |
WO (1) | WO1996031303A1 (de) |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI99268C (fi) * | 1996-04-04 | 1998-02-25 | Upm Kymmene Oy | Kerrosmateriaali |
FI110413B (fi) * | 1997-06-19 | 2003-01-31 | Upm Kymmene Oy | Pakkauslaminaatti |
FI112624B (fi) * | 1998-07-07 | 2003-12-31 | Enso Oyj | Kompostoituva pinnoitettu paperi tai kartonki, menetelmä sen valmistamiseksi sekä siitä saatuja tuotteita |
FI105018B (fi) * | 1998-07-20 | 2000-05-31 | Upm Kymmene Corp | Elintarvikepakkauksen kansirakenne |
JP2001192478A (ja) * | 2000-01-12 | 2001-07-17 | Mitsubishi Plastics Ind Ltd | 生分解性フィルム |
GB2406305B (en) * | 2003-09-29 | 2006-04-19 | Mars Inc | Compostable packaging materials and methods |
US8637126B2 (en) * | 2006-02-06 | 2014-01-28 | International Paper Co. | Biodegradable paper-based laminate with oxygen and moisture barrier properties and method for making biodegradable paper-based laminate |
US7943218B2 (en) * | 2006-08-14 | 2011-05-17 | Frito-Lay North America, Inc. | Environmentally-friendly multi-layer flexible film having barrier properties |
GB2455599B (en) * | 2007-02-27 | 2010-10-20 | Wagg Foods Ltd | A compostable plastic and paper laminate packaging bag |
EP2497636A1 (de) * | 2011-03-11 | 2012-09-12 | Deutsche SiSi-Werke Betriebs GmbH | Verbessertes Verbundsystem für Verpackungen |
EP2734362B1 (de) * | 2011-07-20 | 2015-09-16 | Walki Group Oy | Beschichtetes papier oder karton |
US9040120B2 (en) | 2011-08-05 | 2015-05-26 | Frito-Lay North America, Inc. | Inorganic nanocoating primed organic film |
US9267011B2 (en) | 2012-03-20 | 2016-02-23 | Frito-Lay North America, Inc. | Composition and method for making a cavitated bio-based film |
US9162421B2 (en) | 2012-04-25 | 2015-10-20 | Frito-Lay North America, Inc. | Film with compostable heat seal layer |
FI125255B (fi) * | 2012-06-08 | 2015-08-14 | Upm Kymmene Corp | Menetelmä ja järjestelmä pakkausmateriaalin valmistamiseksi sekä pakkausmateriaali ja pakkaus |
CN104395493B (zh) | 2012-06-23 | 2017-08-25 | 福瑞托-雷北美有限公司 | 超薄无机氧化物涂层在包装上的沉积 |
US9090021B2 (en) | 2012-08-02 | 2015-07-28 | Frito-Lay North America, Inc. | Ultrasonic sealing of packages |
US9149980B2 (en) | 2012-08-02 | 2015-10-06 | Frito-Lay North America, Inc. | Ultrasonic sealing of packages |
WO2019060694A1 (en) * | 2017-09-22 | 2019-03-28 | Acetate International Llc | SUBSTRATE HAVING CELLULOSE ACETATE COATING |
SE543458C2 (en) * | 2019-04-12 | 2021-02-23 | Carl Henrik Fernandi Med Firma Fernandi Musik | Sealed package comprising parchment paper |
NL2025240B1 (en) * | 2020-01-20 | 2021-09-08 | Huhtamaki Molded Fiber Tech Bv | Biodegradable multi-layer packaging element, such as a foil or wrap, for a food product, packaging unit with such packaging element, and method for manufacturing such packaging element |
WO2024149939A1 (en) * | 2023-01-10 | 2024-07-18 | Upm-Kymmene Corporation | Oxygen barrier material |
WO2024149938A1 (en) * | 2023-01-10 | 2024-07-18 | Upm-Kymmene Corporation | Oxygen barrier material |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NO166359C (no) * | 1987-10-21 | 1993-04-14 | Polycoat As | Emballasjeemne, for bruk til lufttette beholdere saerlig for matvareprodukter. |
CA2068368A1 (en) * | 1991-05-13 | 1992-11-14 | Masanobu Ajioka | Degradable laminate composition |
US5409772A (en) * | 1991-09-27 | 1995-04-25 | Toppan Printing Co., Ltd. | Composite laminate |
IL107275A (en) * | 1992-10-16 | 1997-07-13 | Leonard Pearlstein | Compostable paperboard container and method for the preparation thereof |
DE4244000A1 (de) * | 1992-12-23 | 1994-06-30 | Buck Chem Tech Werke | Biologisch abbaubarer Verpackungswerkstoff |
-
1995
- 1995-04-06 FI FI951637A patent/FI951637A/fi unknown
-
1996
- 1996-04-04 EP EP96909186A patent/EP0831996A1/de not_active Ceased
- 1996-04-04 AU AU52776/96A patent/AU5277696A/en not_active Abandoned
- 1996-04-04 WO PCT/FI1996/000184 patent/WO1996031303A1/en not_active Application Discontinuation
- 1996-04-04 JP JP53001996A patent/JPH11509142A/ja active Pending
Non-Patent Citations (1)
Title |
---|
See references of WO9631303A1 * |
Also Published As
Publication number | Publication date |
---|---|
JPH11509142A (ja) | 1999-08-17 |
FI951637A0 (fi) | 1995-04-06 |
FI951637A (fi) | 1996-10-07 |
WO1996031303A1 (en) | 1996-10-10 |
AU5277696A (en) | 1996-10-23 |
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