CN101595044B - A packaging laminate and a method of producing the same - Google Patents
A packaging laminate and a method of producing the same Download PDFInfo
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- CN101595044B CN101595044B CN2007800506172A CN200780050617A CN101595044B CN 101595044 B CN101595044 B CN 101595044B CN 2007800506172 A CN2007800506172 A CN 2007800506172A CN 200780050617 A CN200780050617 A CN 200780050617A CN 101595044 B CN101595044 B CN 101595044B
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- Prior art keywords
- paper
- layer
- packaging laminate
- polyolefin
- cardboard
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Links
- 238000004806 packaging method and process Methods 0.000 title claims abstract description 68
- 238000000034 method Methods 0.000 title claims description 18
- 229920000098 polyolefin Polymers 0.000 claims abstract description 71
- 239000002245 particle Substances 0.000 claims abstract description 61
- 239000011087 paperboard Substances 0.000 claims abstract description 54
- 238000000576 coating method Methods 0.000 claims abstract description 48
- 239000011248 coating agent Substances 0.000 claims abstract description 44
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 28
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 19
- 239000000123 paper Substances 0.000 claims abstract description 19
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000007788 liquid Substances 0.000 claims abstract description 15
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 14
- 235000013365 dairy product Nutrition 0.000 claims abstract description 10
- 239000011111 cardboard Substances 0.000 claims description 39
- 239000008187 granular material Substances 0.000 claims description 29
- 229920001684 low density polyethylene Polymers 0.000 claims description 22
- 239000004702 low-density polyethylene Substances 0.000 claims description 22
- 239000000463 material Substances 0.000 claims description 18
- 230000008033 biological extinction Effects 0.000 claims description 17
- 229920001526 metallocene linear low density polyethylene Polymers 0.000 claims description 14
- 239000004708 Very-low-density polyethylene Substances 0.000 claims description 9
- 230000015572 biosynthetic process Effects 0.000 claims description 9
- 229920001862 ultra low molecular weight polyethylene Polymers 0.000 claims description 9
- 229920001866 very low density polyethylene Polymers 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 150000001721 carbon Chemical class 0.000 claims description 2
- 229920000092 linear low density polyethylene Polymers 0.000 claims 2
- 239000004707 linear low-density polyethylene Substances 0.000 claims 2
- 238000003475 lamination Methods 0.000 abstract description 10
- 230000005855 radiation Effects 0.000 abstract 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 10
- 229920002554 vinyl polymer Polymers 0.000 description 10
- -1 polyethylene Polymers 0.000 description 7
- 229920010126 Linear Low Density Polyethylene (LLDPE) Polymers 0.000 description 6
- 239000004743 Polypropylene Substances 0.000 description 6
- 235000013336 milk Nutrition 0.000 description 6
- 239000008267 milk Substances 0.000 description 6
- 210000004080 milk Anatomy 0.000 description 6
- 238000012856 packing Methods 0.000 description 6
- 229920001155 polypropylene Polymers 0.000 description 6
- 235000021262 sour milk Nutrition 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 238000001125 extrusion Methods 0.000 description 4
- 239000000976 ink Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 241000226585 Antennaria plantaginifolia Species 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000004061 bleaching Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 235000013305 food Nutrition 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000000007 visual effect Effects 0.000 description 3
- 239000003738 black carbon Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 235000021056 liquid food Nutrition 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009459 flexible packaging Methods 0.000 description 1
- 235000015203 fruit juice Nutrition 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000011120 plywood Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 235000020095 red wine Nutrition 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Images
Classifications
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- 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
- B65D65/02—Wrappers or flexible covers
- B65D65/16—Wrappers or flexible covers with provision for excluding or admitting light
- B65D65/20—Wrappers or flexible covers with provision for excluding or admitting light with provision for excluding light of a particular wavelength
-
- 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
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/10—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of paper or cardboard
-
- 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
- B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
-
- 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
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- 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
-
- 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
- B65D65/02—Wrappers or flexible covers
- B65D65/16—Wrappers or flexible covers with provision for excluding or admitting light
-
- 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
- B65D65/40—Applications of laminates for particular packaging purposes
-
- 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
- B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
- B65D75/26—Articles or materials wholly enclosed in laminated sheets or wrapper blanks
-
- 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
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
-
- 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
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
- D21H17/675—Oxides, hydroxides or carbonates
-
- 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
- B65D81/30—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants by excluding light or other outside radiation
-
- 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
- D21H19/20—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Wrappers (AREA)
- Laminated Bodies (AREA)
Abstract
A packaging laminate for a thin-walled packaging container for liquid dairy produce. The laminate (11) includes a thin layer (11) of paper or paperboard and outer, liquid-tight polyolefin coatings (12, 13) of which one (12) contains light -absorbing carbon particles in sufficient quantity to impart to the container adequate tightness properties against light, in particular UV radiation. The particle-containing coating (12) is laminated to the paper- or paperboard layer (11) by means of an extruded lamination layer (14) of polyolefin. To conceal the particle-containing coating (12) and making it invisible through the paper- or paperboard layer (11), the paper- or paperboard layer (11) contains light-reflecting particles, preferably titanium dioxide particles, spread throughout the bulk of the paper- or paperboard layer (11). The quantity of light -reflecting particles in the paper- or paperboard layer (11) lies between 7 and 20 weight%, counted on the total weight of the paper- or paperboard layer (11).
Description
Technical field
The present invention relates to comprise the layer of paper or cardboard formation and the packaging laminate of the close layer of outside polyolefin liquid, one of them polyolefin coating contains the extinction carbon granule.Particularly, the present invention relates to be used for this packaging laminate of packing liquid food (like milk or sour milk).
The invention still further relates to the method for making this packaging laminate.
Background technology
Dairy products, particularly milk and sour milk, very responsive for light, and if be exposed to visible light can be by rapid damage, perhaps rotten.The packaging laminate itself that comprises the layer that paper or cardboard form must have the intrinsic attribute that stops light, and it is enough to get rid of or prevent that this harmful light from passing, and is to be processed by unbleached pulp but require this layer.Yet the problem with packaging laminate of layer that one or more this not bleached papers or cardboard form or bleaching and the not combination of bleached bed (for example, duplex paper) is that they always do not satisfy the requirement of official for recycling aspect defined.For example, in some country, total ban is used unbleached fiber separately or is used in combination with the fiber of bleaching, because paper on these markets or cardboard must not contain unbleached fiber fully, so that satisfy such administration request.On the other hand; Packaging laminate comprises that layer that paper or the cardboard of one or more bleachings form does not have enough block light line attributes and passes to stop harmful visible light, only if utilize at least one extra layer to replenish the light leak tightness with compensation deficiency under the situation of this layer not.For this reason, at least one packaging laminate outer polyethylene coatings that provides known in the art, it usually will be towards the inside of this package, and the extinction carbon granule with q.s is to promote and to keep essential this package barrier properties to visible light.
Have the packaging laminate of the additional airtight attribute of visible light is for example being described among the WO2006/073341.This packaging laminate has the layer of paper or cardboard formation, is provided with the first polyolefin external skin in the one of which side, and at its opposite side, is provided with the second polyolefin external skin, and it comprises the extinction carbon granule in order to increase the light leakproofness.This polyolefin coating that contains particle relies on extruded lamination layer and is laminated to the layer that this paper or cardboard form.For when packaging laminate changes shape and is packing container through folding and forming and sealing, hide the polyolefin coating that contains particle that becomes black, therefore folding by this way this packaging laminate is about to this black coating then towards this package the inside.
If this polyolefin coating that contains particle comprises excessive this extinction particle for some reason; So must with at least one extra layer replenish this packaging laminate and/or to being included in that at least one material layer in this packaging laminate provides visual attribute (visual properties) so that the polyolefin coating of hiding this black, thereby both cannot see from the outside of this package even can not pick out this layer.According to WO2006/073341, the extruded lamination layer between the layer that this paper or cardboard form and the polyolefin coating of this black relies on the reflective white particle compound of titanium dioxide and provides so additional visual attributes.Through the reflective white particle compound in this laminate layers, give this package more " pure " and whiter outward appearance, impressionability of this package decorative pattern etc. is also owing to the contrast of its increase is improved simultaneously.
WO2006/073344 has described the further example according to existing packaging laminate recited above.This existing packaging laminate has the paper of relative thin or the layer that cardboard forms, and is provided with the first polyolefin external skin in the one of which side, and is provided with the second polyolefin external skin at its opposite side, and it comprises the extinction carbon granule in order to increase the light blocking attribute.This polyolefin coating that becomes black that contains particle relies on extruded lamination layer to be laminated to the layer of this paper or cardboard formation.According to WO2006/073344, owing to this polyolefin coating of mentioning at first is supplemented with the polyolefin coating that the titanium dioxide reflective particles is hidden this black.
The another packaging laminate of the above-mentioned type is from the known type of WO2006/073343.This existing packaging laminate comprises the paper of relative thin or the layer that cardboard forms, and has the first polyolefin external skin in the one of which side, and has the second polyolefin external skin at its opposite side, and it comprises the extinction carbon granule in order to increase the light blocking attribute.This polyolefin coating that contains particle relies on extruded lamination layer to be laminated to the layer of this paper or cardboard formation.According to WO2006/073343, this outside polyolefin coating of mentioning at first is supplemented with the titanium dioxide reflective particles with this extruded lamination layer both so that hide the polyolefin coating of this black.
Above-mentioned existing packaging laminate is through the laminating technology manufacturing; Polyolefin film wherein prefabricated, that contain particle relies on the side of laminated polyolefin laminated in paper or paperboard web; This laminate layers is squeezed between this film and this coiled material; And last, the opposite side of this coiled material applies polyolefin coating through extrusion process.
Making in this existing packaging laminate an intrinsic defective and be the polyolefin blend that contains particle requires too accurate process-monitor and complicated extrusion machining equipment to guarantee running through whole lamination and polyolefin layer has the single and uniform distribution of particles respectively.This single particle distributes especially needs the well-mixed thing of polyolefin and particle, the quite difficulty acquisition under the extruder screw situation of application of complex not of this compound.And then thoroughly the viscosity of this polyolefin melt monitored and regulated to mixing need especially so that promote this melt evenly flowing through this extruder.Other solid matter has more increased the risk to the wearing and tearing and the damage of the special sensing unit of process equipment in the poly-mer of granulate mixture and this fusing; Simultaneously, the pretreatment or the compatibility operation that usually also need at least one this independent particle are so that them and relevant compatible polyolefin.
Therefore this area needs a kind of food (particularly liquid dairy products) packaging laminate; It guarantees essential protection to the UV ray that is harmful to product, but it can not require too accurate process-monitor or complicated process equipment through simple laminating technology manufacturing simultaneously.
Summary of the invention
Goal of the invention
Therefore, an object of the present invention is to satisfy the demand of this area above-mentioned.Further purpose of the present invention is to realize the packaging laminate of the above-mentioned type, can make efficiency-cost ratio packing container high, that have essential food (particularly liquid dairy products) quality supervision for arbitration by it.
Another purpose of the present invention is a kind of packaging laminate, and it possesses being harmful to the stronger leakproofness of UV ray of product with flexible pincushion that acts on liquid dairy products (like milk or sour milk) or bag shape packing container.
The further again purpose of the present invention is to realize a kind of straightforward procedure of making packaging laminate, and packaging laminate possesses essential food (particularly liquid dairy products) quality supervision for arbitration as flexible, high efficiency-cost ratio packing container.
According to of the present invention these be through a kind of packaging laminate realization with other targets and advantage; Comprise layer and multilayer outer, liquid-tight layer that paper or cardboard form; One of close layer of this liquid comprises the extinction carbon granule; It is characterized in that the layer that this paper or cardboard form comprises reflective particles, this reflective particles embeds and spreads all over the layer of whole paper or cardboard formation.Also realize through a kind of method; The prefabricated coiled material that wherein comprises the film that the polyolefin of extinction carbon granule forms relies on laminated polyolefin to be pressed on paper or the paperboard web that comprises reflective particles layer by layer; This laminate layers is squeezed between these two said coiled materials, and the uncoated side of this paper or paperboard web is coated with polyolefin film.
Brief summary of the invention
According to one aspect of the invention, therefore realize a kind of layer of paper or cardboard formation and packaging laminate of the close layer of polyolefin liquid of comprising, one of them polyolefin coating comprises the extinction carbon granule.This packaging laminate is characterised in that the layer that this paper or cardboard form comprises reflective particles, its embedding and spread over whole paper or layer that cardboard forms in.
Because this reflective white particle in the layer that this paper or cardboard form; Therefore this fibrage " bears " effect of the polyolefin coating of hiding this black; But has such beneficial effect; Promptly this laminate layers can promptly not have the polyolefin of granulate mixture by the polyolefin extruding of " pure " with this outside polyolefin coating.Because this allocation of duties, thus can be somebody's turn to do according to packaging laminate of the present invention with simple method manufacturing, and do not require higher light leakproofness and can not endanger this packaging laminate " pure " and pale outward appearance.
The amount of the reflective white particle in the layer that this paper or cardboard form can be in the scope inner conversion of broad, but all should be enough big in each independent situation layer invisible fully so that this contains that black carbon particle in the polyolefin coating of particle sees through that this paper or cardboard form.Preferably, this amount also should improve the impressionability of printing-ink enough greatly to give the pale background that this packaging laminate contrast ratio strengthens thus, and this printing ink is in order to decorate and/or to provide the purpose of information to be printed on this packaging laminate.
In fact, if being the 7wt% at least of this fibrage gross weight, verified reflective particles is good, so that give the essential light leakproofness of this packaging laminate and required pale outward appearance and impressionability with good contrast effect.On the other hand, the amount of this reflective particles should be greater than about 20wt% of this fibrage gross weight, because this fibrage becomes more frangible and loses mechanical strength properties gradually along with the increase of this amount.So, in this fibrage reflective particles preferred amount be this fibrage gross weight 7 to 20wt% between.
A preferred exemplary according to the reflective particles of this packaging laminate of the present invention is made up of titanium dioxide granule.
The polyolefinic example that in this this external skin according to packaging laminate of the present invention, adopts is poly-vinyl and polypropylene.Preferably, this polyolefin is chosen from the group that comprises low density polyethylene (LDPE) (LDPE), linear low density polyethylene (LLDPE) and metallocene PE (mPE) in fact.
The polyolefinic example that in this laminate layers according to this packaging laminate of the present invention, adopts is poly-vinyl and polypropylene.Preferably, this polyolefin is chosen from the group that comprises low density polyethylene (LDPE) (LDPE), linear low density polyethylene (LLDPE) and metallocene PE (mPE) in fact.
According to the present invention on the other hand, with realizing a kind of method of making packaging laminate, this ply wood comprises layer and the close layer of outside polyolefin liquid that paper or cardboard form, and one of close layer of this liquid comprises the extinction carbon granule.This method feature is that the polyolefin prefabricated membrane that comprises the extinction carbon granule relies on the side of laminated polyolefin laminated in paper or paperboard web; This laminate layers pushes between this film and this coiled material, and the uncoated side of this coiled material applies polyolefin coating through extrusion process.
Be that according to method benefit of the present invention it is carried out without any need for too accurate process-monitor or complicated extrusion equipment, and only uses simple process equipment to carry out.
The further target of the present invention, advantage and details will become obvious from the present invention's description with reference to the accompanying drawings.
Description of drawings
Fig. 1 schematic illustration is according to the cutaway view of packaging laminate of the present invention; With
Fig. 2 schematic illustration is according to the packaging laminate of method shop drawings 1 of the present invention.
The specific embodiment
Although the present invention will specifically reference will be made to the accompanying drawings, be not it exclusively is restricted to these described embodiment.For it is obvious that in those skilled in the art, shown in the embodiment that describes in single details can the modification down of the guidance at this specification sheets, and do not deviate from inventive concept disclosed herein.Therefore, this inventive concept only is defined by the following claims.
Therefore, Fig. 1 schematic illustration is according to the cutaway view of packaging laminate of the present invention (generalized reference label 10).This packaging laminate 10 has the thin layer 11 and the close coating 12 of outside polyolefin liquid and 13 of paper or cardboard, and one of them coating 12 comprises the extinction carbon granule, and its quantity is enough to give this packaging laminate 10 the essential leakproofness attribute to light (particularly UV ray).This coating 12 that contains particle relies on laminated polyolefin layer 14 to be laminated to the layer 11 of this paper or cardboard formation.
The layer 11 that this paper or cardboard form preferably has about 50-70g/m
2Grammes per square metre or carry heavyly, it can be a craft paper.
This coating 12 that contains particle can comprise the polyolefin that poly-vinyl or polypropylene are formed; Poly-vinyl preferably, it is chosen from the group that comprises low density polyethylene (LDPE) (LDPE), linear low density polyethylene (LLDPE), VLDPE (VLDPE), ultra-low density polyethylene (ULDPE) and metallocene PE (mPE) in fact.Preferably, this contains the about 15-30g/m of coating weight (surface weight) of the coating 12 of particle
2The amount of extinction carbon granule should be positioned at about 0.2-3g/m in this coating 12
2Scope in.
This extruded lamination layer 14 can comprise the polyolefin that poly-vinyl or polypropylene are formed; Poly-vinyl preferably, it is chosen from the group that comprises low density polyethylene (LDPE) (LDPE), linear low density polyethylene (LLDPE), VLDPE (VLDPE), ultra-low density polyethylene (ULDPE) and metallocene PE (mPE) in fact.This laminate layers 14 preferably has 10-30g/m
2Coating weight (surface weight).
This coating 13 that does not contain particle can be similar to this coating 12; Comprise the polyolefin that poly-vinyl or polypropylene are formed; And poly-vinyl preferably, it is chosen from the group that comprises low density polyethylene (LDPE) (LDPE), linear low density polyethylene (LLDPE), VLDPE (VLDPE), ultra-low density polyethylene (ULDPE) and metallocene PE (mPE) in fact.This coating 13 preferably has about 10-20g/m
2Coating weight (surface weight).
Become the coating 12 of black and make it see through the layer 11 that this paper or cardboard form invisible by this carbon granule in order to hide, the layer 11 that this paper or cardboard form comprises the extinction white particle, titanium dioxide granule preferably, and its embedding also spreads in the whole fibrage 11.
The amount of reflective white particle can change in the scope of broad in the layer 11 that this paper or cardboard form; But in each independent situation, should be enough big in fact to see through the layer 11 that this paper or cardboard form invisible fully so that this contains black carbon particle in the polyolefin coating of particle.Preferably, this amount also should be enough greatly giving the pale background of these packaging laminate 10 relative printing-inks increase contrast ratios, for decorate and/or provide information purpose and with this ink printing on this packaging laminate 10.
In fact, the amount of verified reflective white particle is that the 7wt% of this fibrage gross weight is favourable at least, so that give essential light leakproofness of this packaging laminate 10 and required pale outward appearance and the impressionability with good contrast effect.On the other hand, the amount of this reflective white particle should because this fibrage 11 increases along with amount and becomes more and more frangible, and not lose mechanical strength properties greater than about 20wt% of fibrage 11 gross weights gradually.So the preferred amounts of reflective white particle is between the 7wt% and 20wt% of these fibrage 11 gross weights in this fibrage 11.
This packaging laminate 10 is made with the mode of schematic illustration among Fig. 2 among Fig. 1.From the left side of figure, the paper web 20 that comprises reflective particles is launched from holder (magazine reel) (not shown), comprises coiled material that the polyolefin of extinction carbon granule forms or film 21 are expanded to this figure from the holder (not shown) right side simultaneously.The coiled material of this paper web 20 and polyolefin film 21 converges mutually; And be conducted through two together and rotate cooled rollers 22, the roll gap between 23; Between the coiled material of this paper web 20 and polyolefin film 21, push the laminated film 24 of polyolefin composition simultaneously through extruder 25, so that with they laminations each other.After through these two cooled rollers 22, roll gap between 23; The laminated web of paper web of this lamination 20 and polyolefin film 21 is guided to the coating bench board at A place via slewing rollers 26; Wherein these paper web 20 uncoated sides apply the film 27 that polyolefin is formed, and it is squeezed on this coiled material to form the packaging laminate in order to further transmission and processing through extruder 28.
In fact, the reflective particles in this paper web 20 can be a titanium dioxide, and the amount of these titanium dioxide granules must be the 7wt% of these paper web 20 gross weights at least.Yet the amount of titanium dioxide granule should be greater than about 20wt% of these paper web 20 gross weights, because this coiled material 20 can lose mechanical strength properties gradually along with the grain amount increase.Therefore; The scope of the amount of the reality of this reflective particles is from about 7wt% to 20wt%; The black of carbon granule in the polyolefin film 21 below this paper web 20 is hidden effectively in this scope, this reflective particles is given pure pale outward appearance of this packaging laminate and good impressionability simultaneously.
This polyolefin film 21 that contains particle and this laminated film 24 both and this do not contain particulate polyolefin film 27 and can comprise poly-vinyl or polypropylene; But preferably include poly-vinyl, it is chosen from the group that comprises low density polyethylene (LDPE) (LDPE), linear low density polyethylene (LLDPE), VLDPE (VLDPE), ultra-low density polyethylene (ULDPE) and metallocene PE (mPE) in fact.
The preferred coatings amount (surface weight) that is included in material layer in this packaging laminate is obvious from following table:
| Material layer | Coating amount (g/m 2) |
| Do not contain the particulate polyolefin coating | 10-20 |
| Contain the particle ply of paper | 30-100 |
| Laminate layers | 10-30 |
| Contain grain coating | 15-30 |
As mentioned previously, by according to this packaging laminate of the present invention, make flexible, thin-walled package container through this packaging laminate of folding and forming and heat seal in a manner known way, be used for transmitting and storage of liquids dairy products, for example milk and sour milk.
For example,, make this pincushion or bag shape package, promptly at first this coiled material is changed shape for tube, through the longitudinal edge heat seal along this according to following mode for this laminated coiled material.This tube is filled Related product, and repeats the pillow packs that transverse heat seal is divided into filling through the longitudinal axis at this.Afterwards, the tube zone through cutting or shearing transverse sealing separates this pillow packs.
A well known example of this pincushion flexible packaging is
package of before having mentioned, and wherein liquid dairy products (like milk and sour milk) can transport reliably and store and risk that harmful UV ray penetrates.
Although the present invention describes in detail with reference to accompanying drawing, not exclusively to be restricted to the embodiment that these illustrate and describe.To those skilled in the art, under the guidance of describing in front, obviously, can carry out many modifications and change, and not deviate from this inventive concept.Therefore, all such modifications and change all and to be liked enclosed this inventive concept that claim limits and comprise.
Industrial applicability
Be specially adapted to flexibility, thin-walled package container according to this packaging laminate of the present invention, it is used for dairy products, like milk and sour milk, but naturally, also can be used for packing and transporting the liquid food of other types, for example fruit juice, red wine, edible wet goods.
Claims (17)
1. packaging laminate; Comprise layer (11) and multilayer outer, liquid-tight coating (12 that paper or cardboard form; 13); One of the close coating of this liquid (12) comprise the extinction carbon granule, it is characterized in that the layer (11) that this paper or cardboard form comprises reflective particles, and this reflective particles embeds and spread all over the layer (11) of whole paper or cardboard formation.
2. packaging laminate according to claim 1 is characterised in that the amount of this reflective particles in the layer (11) that this paper or cardboard form is enough big, thus make this coating (12) become black by this carbon granule and see through this paper or layer (11) that cardboard forms invisible.
3. packaging laminate according to claim 1 and 2, the amount that is characterised in that the reflective particles in the layer (11) that this paper or cardboard form is enough greatly to give this packaging laminate pale outward appearance.
4. packaging laminate according to claim 1 and 2 is characterised in that the reflective particles in the layer (11) that this paper or cardboard form is made up of titanium dioxide granule.
5. packaging laminate according to claim 4 is characterised in that the amount of reflective titanium dioxide granule in the layer (11) that this paper or cardboard form is the 7wt% at least of this layer (11) gross weight.
6. packaging laminate according to claim 5 is characterised in that the 20wt% of the amount of reflective titanium dioxide granule in the layer (11) that this paper or cardboard form less than this layer (11) gross weight.
7. packaging laminate according to claim 1 and 2 is characterised in that this coating (12) that contains particle relies on laminate layers (14) to be laminated to the layer (11) of this paper or cardboard formation.
8. packaging laminate according to claim 7 is characterised in that these two coatings (12 and 13) and this laminate layers (14) comprise polyolefin.
9. packaging laminate according to claim 8 is characterised in that said polyolefin chooses from the group that comprises low density polyethylene (LDPE), linear low density polyethylene, VLDPE, ultra-low density polyethylene and metallocene PE.
10. packaging laminate according to claim 1 and 2 is characterised in that this coating (12) that contains particle is a blown film.
11. method of making each described packaging laminate of claim 1 to 10; The prefabricated coiled material that is characterised in that the polyolefin film (21) that comprises the extinction carbon granule relies on laminated polyolefin layer (24) to be laminated to paper or the paperboard web (20) that comprises reflective particles; This laminate layers is squeezed between the prefabricated coiled material and this paper or paperboard web (20) of this polyolefin film (21), and the uncoated side of this paper or paperboard web (20) is coated with polyolefin film (27).
12. method according to claim 11 is characterised in that this polyolefin film (27) is extruded.
13., be characterised in that the reflective particles in this paper or the paperboard web (20) is made up of titanium dioxide granule according to claim 11 or 12 described methods.
14. method according to claim 13 is characterised in that in this paper or the paperboard web (20) that the amount of titanium dioxide granule is 7Wt% at least.
15., be characterised in that the polyolefin in two these polyolefin films (21 and 27) and this laminated film (24) is chosen from the group that comprises low density polyethylene (LDPE), linear low density polyethylene and metallocene PE according to claim 11 or 12 described methods.
16., be characterised in that this polyolefin film (21) that contains particle is a blown film according to claim 11 or 12 described methods.
17. flexibility, a form pillow packs container that is used for liquid dairy products is characterized in that it and makes through folding and forming and heat seal such as each described packaging laminate of claim 1 to 10.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE0700191A SE530801C2 (en) | 2007-01-29 | 2007-01-29 | Packaging laminates containing light absorbing particles for protection against UV light and method of making this |
| SE07001910 | 2007-01-29 | ||
| SE0700191-0 | 2007-01-29 | ||
| PCT/SE2007/001035 WO2008094084A1 (en) | 2007-01-29 | 2007-11-26 | A packaging laminate and a method of producing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101595044A CN101595044A (en) | 2009-12-02 |
| CN101595044B true CN101595044B (en) | 2012-11-14 |
Family
ID=39674297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007800506172A Expired - Fee Related CN101595044B (en) | 2007-01-29 | 2007-11-26 | A packaging laminate and a method of producing the same |
Country Status (5)
| Country | Link |
|---|---|
| CN (1) | CN101595044B (en) |
| BR (1) | BRPI0721186B1 (en) |
| RU (1) | RU2445247C2 (en) |
| SE (1) | SE530801C2 (en) |
| WO (1) | WO2008094084A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| UA110221C2 (en) * | 2010-09-28 | 2015-12-10 | Tetra Laval Holdings & Finance | Method for producing packaging materials for packaging, sterilized, packaging materials and packaging |
| CN116160742A (en) * | 2022-12-09 | 2023-05-26 | 上海艾录包装股份有限公司 | PP material cheese composite sheet and preparation method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4521437A (en) * | 1982-06-02 | 1985-06-04 | Du Pont Canada Inc. | Pouches of ethylene/octene-1 copolymer film containing a flowable material |
| EP0240976A2 (en) * | 1986-04-07 | 1987-10-14 | Fuji Photo Film Co., Ltd. | Packaging material |
| EP0512364A1 (en) * | 1991-05-03 | 1992-11-11 | Tetra Laval Holdings & Finance SA | Packaging laminate with sealing and barrier properties and also packaging container manufactured from the packaging laminate |
| WO1997002948A1 (en) * | 1995-07-07 | 1997-01-30 | Tetra Laval Holdings & Finance S.A. | Multilayer film material and pouches made from the material |
| CN1750976A (en) * | 2003-02-21 | 2006-03-22 | 斯托拉恩索公司 | Heat-sealed sterilised product package packaging material for the same and use of the packaging material |
| WO2006073343A1 (en) * | 2005-01-03 | 2006-07-13 | Tetra Laval Holdings & Finance S.A. | A thin packaging laminate and a packaging container formed thereof |
| WO2006073341A1 (en) * | 2005-01-03 | 2006-07-13 | Tetra Laval Holdings & Finance S.A. | A thin packaging laminate and a packaging container formed thereof |
| WO2006073344A1 (en) * | 2005-01-03 | 2006-07-13 | Tetra Laval Holdings & Finance S.A. | A thin packaging laminate and a packaging container formed thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9700433D0 (en) * | 1997-01-10 | 1997-02-26 | Elopak Systems | A packaging laminate |
| US6720046B2 (en) * | 2001-06-14 | 2004-04-13 | Tetra Laval Holdings & Finance, S.A. | Low scalping laminate for packaging material |
| WO2004074130A1 (en) * | 2003-02-21 | 2004-09-02 | Stora Enso Oyj | Heat-sealed sterilised product package packaging material for the same and use of the packaging material |
| CA2613927A1 (en) * | 2005-06-29 | 2007-01-04 | Graphic Packaging International, Inc. | Packaging material for food items containing permeating oils |
-
2007
- 2007-01-29 SE SE0700191A patent/SE530801C2/en unknown
- 2007-11-26 CN CN2007800506172A patent/CN101595044B/en not_active Expired - Fee Related
- 2007-11-26 WO PCT/SE2007/001035 patent/WO2008094084A1/en active Application Filing
- 2007-11-26 RU RU2009132535/12A patent/RU2445247C2/en not_active IP Right Cessation
- 2007-11-26 BR BRPI0721186A patent/BRPI0721186B1/en not_active IP Right Cessation
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4521437A (en) * | 1982-06-02 | 1985-06-04 | Du Pont Canada Inc. | Pouches of ethylene/octene-1 copolymer film containing a flowable material |
| EP0240976A2 (en) * | 1986-04-07 | 1987-10-14 | Fuji Photo Film Co., Ltd. | Packaging material |
| EP0512364A1 (en) * | 1991-05-03 | 1992-11-11 | Tetra Laval Holdings & Finance SA | Packaging laminate with sealing and barrier properties and also packaging container manufactured from the packaging laminate |
| WO1997002948A1 (en) * | 1995-07-07 | 1997-01-30 | Tetra Laval Holdings & Finance S.A. | Multilayer film material and pouches made from the material |
| CN1750976A (en) * | 2003-02-21 | 2006-03-22 | 斯托拉恩索公司 | Heat-sealed sterilised product package packaging material for the same and use of the packaging material |
| WO2006073343A1 (en) * | 2005-01-03 | 2006-07-13 | Tetra Laval Holdings & Finance S.A. | A thin packaging laminate and a packaging container formed thereof |
| WO2006073341A1 (en) * | 2005-01-03 | 2006-07-13 | Tetra Laval Holdings & Finance S.A. | A thin packaging laminate and a packaging container formed thereof |
| WO2006073344A1 (en) * | 2005-01-03 | 2006-07-13 | Tetra Laval Holdings & Finance S.A. | A thin packaging laminate and a packaging container formed thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101595044A (en) | 2009-12-02 |
| WO2008094084A1 (en) | 2008-08-07 |
| SE530801C2 (en) | 2008-09-16 |
| BRPI0721186A2 (en) | 2014-03-18 |
| RU2009132535A (en) | 2011-03-10 |
| RU2445247C2 (en) | 2012-03-20 |
| BRPI0721186B1 (en) | 2018-07-17 |
| WO2008094084A8 (en) | 2009-08-13 |
| SE0700191L (en) | 2008-07-30 |
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