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WO1996015321A1 - Greaseproof and grease-resistant wrapping material - Google Patents

Greaseproof and grease-resistant wrapping material Download PDF

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Publication number
WO1996015321A1
WO1996015321A1 PCT/SE1995/001217 SE9501217W WO9615321A1 WO 1996015321 A1 WO1996015321 A1 WO 1996015321A1 SE 9501217 W SE9501217 W SE 9501217W WO 9615321 A1 WO9615321 A1 WO 9615321A1
Authority
WO
WIPO (PCT)
Prior art keywords
weight
parts
material according
pigment
greaseproof
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
Application number
PCT/SE1995/001217
Other languages
French (fr)
Inventor
Inga-Stina ÅKERBLOM
Lennart Stolpe
Gunnar Johansson
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.)
Peterson Seffle AB
Original Assignee
Peterson Seffle AB
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 Peterson Seffle AB filed Critical Peterson Seffle AB
Priority to AU38844/95A priority Critical patent/AU3884495A/en
Publication of WO1996015321A1 publication Critical patent/WO1996015321A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/10—Packing paper
    • 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
    • D21H19/36—Coatings with 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
    • D21H19/00—Coated paper; Coating material
    • D21H19/36—Coatings with pigments
    • D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
    • D21H19/56—Macromolecular organic compounds or oligomers thereof obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H19/58—Polymers or oligomers of diolefins, aromatic vinyl monomers or unsaturated acids or derivatives thereof
    • 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
    • D21H19/72—Coated paper characterised by the paper substrate
    • 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
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/06—Vegetable or imitation parchment; Glassine paper

Definitions

  • the present invention relates to greaseproof and grease- resistant wrapping material having good printability.
  • Greaseproof and grease-resistant wrapping material for products which contain greases or fats for instance material used to wrap margarine, must be resistant to penetration by greases and fats.
  • Plastic film, metal film and greaseproof and grease-resistant paper fulfil these requirements.
  • the wrapping material will preferably also be gas-impermeable to the greatest possible extent, in order to prevent atmo ⁇ spheric oxygen from turning the fat rancid and also to provide a light barrier, since light also has a negative effect on fats and greases.
  • the wrapping material must also be attractive and have good printability, particularly when the material is to be used to wrap consumer products. This requirement often means that it must be possible to print the wrapping material with high qualitative printing methods, such as deep printing methods, which places high demands on the surface smoothness of the material.
  • the wrapping material must also have a stiffness which will enable it to be used in quick operating packaging machines.
  • Plastic film does not provide a sufficiently effective light barrier, or have sufficient stiffness and gas-imperviousness; metal film does not have sufficient stiffness at economically reasonable thicknesses; and greaseproof paper is normally relatively transparent and has poor printability.
  • laminates comprising two or more of these different materials are used at present, for instance an aluminium foil and paper laminate, or plastic coated paper. Although these laminates fulfil the aforesaid requirements, they are expensive to produce and also difficult to recycle. The ability to recycle such materials has a great and growing significance with regard to the novel concept of recycling packaging materials.
  • the object of the invention is to provide greaseproof and grease-resistant paper which eliminates or substantially reduces the aforesaid problems, by coating the greaseproof and grease-resistant paper with a layer which will impart to the paper an effective light barrier, good surface smooth ⁇ ness, high brightness and high opacity (low transparency), good printing ink absorption, and which will also improve the resistance of the paper to penetration by fat, grease and oils.
  • grease-resistant paper includes:
  • greaseproof paper here all types of grease- resistant papers that are comprised essentially of chemical pulp, where grease-resistance is brought about by beating the pulp.
  • vegetable parchment is meant a paper which has been treated with sulphuric acid
  • pergamyn paper is meant a supercalendered paper produced from heavily beaten pulp, essentially chemical pulp. All of these types of paper are included by the present invention and are hereinafter included in the designation greaseproof and grease-resistant paper(s).
  • the resistance of the paper to penetration oils and greases can also be achieved by treating paper with a surface tension modifying agent, for instance scotchban ® from 3M.
  • Such papers are not included by the invention, unless the treatment has been effected on one of the aforesaid types of paper.
  • Greaseproof and grease-resistant paper may be sized in a conventional way, using techniques well known to the person skilled in this art, in order to improve the imperviou ⁇ ness of the paper.
  • Surface sizing may include treatment with CMC (carboxymethyl cellulose), polyvinyl alcohol, starch or alginate or combinations thereof.
  • Greaseproof and grease-resistant paper may also be stock- sized with a hydrophobizing agent to improve the surface properties of the paper, preferably its water-repelling properties, with the aid of known techniques.
  • Greaseproof and grease-resistant paper may also include a filler, such as titanium dioxide, calcium carbonate, talc, kaolin and aluminium silicate.
  • Greaseproof paper may also be surface-treated, by calendaring and/or by glazing.
  • Greaseproof and grease-resistant paper treated or untreated, for instance in accordance with the aforegoing, having weights per unit area within the range of 20 to 120 g/m 2 , preferably 30 to 80 g/m 2 and suitably 40 to 70 g/m 2 will preferably constitute the starting material which, in accordance with the present invention, is coated with a layer that contains pigment, binder, viscosity regulating agent, lubricant and dispersion medium.
  • the pigment functions to provide the coated paper with an effective light barrier, good surface smoothness, high brightness, high opacity, and good printing-ink absorption properties.
  • the pigment also contains at least one of the substances taken from the group kaolin, calcium carbonate, talc, titanium dioxide and aluminium silicate.
  • titanium dioxide is also active in preventing the opacity of the coating being affected by any grease or fat that may penetrate the layer.
  • kaolin also provides the coated paper with a high surface lustre in a possible calendaring or glazing process.
  • Calcium carbonate is a pigment which imparts high brightness to the coated paper. Titanium dioxide is suitably present in the pigment in an amount corresponding to 1-30 parts by weight of the total amount of pigment used.
  • the dispersion medium in the coating may be anionic, cationic or nonionic.
  • the most suitable dispersion medium is an anionic dispersion medium in an amount corresponding to 0-0.5 parts by weight for each 100 parts by weight pigment.
  • the binder present in the coating will contain at least one of the substances, prefera ⁇ bly polymers, taken from the group acrylate polymers, acrylonitrile, styrene, butadiene, styrene-butadiene polymers or vinyl acetate polymers, or copolymers or mixtures thereof.
  • a binder which contains polyacrylates or copolymers with polyacrylates is present in the coating in an amount corresponding from 9 to 25 parts by weight, preferably from 12 to 20 parts by weight and most suitably from 13 to 17 parts by weight per 100 parts by weight pigment.
  • the viscosity regulating agent may include CMC (carboxymethyl cellulose), starch or synthetic water-swelling agents, such as copolymers of acrylic ethyl ester and carboxylic acids.
  • the viscosity regulating agent is present in the coating in an amount corresponding from 0.5 to 3, preferably from 1 to 2 parts by weight per 100 parts by weight pigment.
  • the lubricant in the coating may, for instance, include calcium stearate in an amount corresponding from 0 to 2 parts by weight per 100 parts by weight pigment.
  • the aforedescribed coating has a weight per unit area of from 8 to 25 g/m 2 , preferably from 13 to 18 g/m 2 , and most suitably from 13 to 15 g/m 2 , calculated as an air-dry coating.
  • the present invention has been found to provide a greaseproof paper that has very good printing properties.
  • the surface roughness according to Bendtsen (ISO 5636/3) has been improved to about 20 ml/min. (150 mm wp) , which corre ⁇ sponds to the surface roughness of coated magazine paper or supercalendered paper (sc-paper) .
  • Brightness and opacity have also been markedly improved, and printing tests have given very good results.
  • Grease impenetratability determined indirectly by measuring air permeance (SCAN P-26), has also been reduced by more than a power of ten.
  • the preferred embodiment is a greaseproof paper coated with a layer containing pigment, binder, viscosity regulator and dispersion medium.
  • the greaseproof paper has a weight per unit area of 50 g/m 2 and is comprised essentially of heavily beaten, ozone- bleached and peroxide-treated pulp and contains 3 percent by weight titanium dioxide.
  • the paper is surface-sized and has, among other things, the properties set forth in Table 1 below.
  • the pigment in the coating layer includes 90 percent by weight kaolin having a grain size where 80% is smaller than 2 ⁇ m, and 10 percent by weight titanium dioxide.
  • the kaolin used was SPS clay from ECC, and the titanium dioxide used was Rutil RL 68 ® from Rh ⁇ ne-Poulenc.
  • the dispersion medium contained 0.15 parts by weight per 100 parts by weight pigment of an anionic dispersion medium, Polysalz S ® from BASF.
  • the binder in the coating layer included 15 parts by weight per 100 parts by weight pigment of a copolymer of styrene and N-butyl acrylate retailed under the trademark Acronal S-728 ® from BASF.
  • the viscosity regulator in the coating layer includes 1.5 parts by weight per 100 parts by weight pigment CMC retailed under the trademark Finnfix 5 ® from Metsa-Serla OY.
  • the coating layer had a weight per unit area of 14 g/m 2 , calculated as an air-dry coating.
  • the coating layer was glazed in an after-treatment process, wherewith the paper obtained the very good properties disclosed in Table 1 below. Table 1
  • Ozone-bleached paper aftertreated with peroxide with no titanium dioxide addition.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Paper (AREA)

Abstract

The invention relates to a greaseproof and grease-resistant wrapping material having good printability. The inventive material is characterized in that it is comprised of a greaseproof and grease-resistant paper that has been coated with a layer containing pigment and binder.

Description

GREASEPROOF AND GREASE-RESISTANT WRAPPING MATERIAL
TECHNICAL FIELD
The present invention relates to greaseproof and grease- resistant wrapping material having good printability.
BACKGROUND OF THE INVENTION
Greaseproof and grease-resistant wrapping material for products which contain greases or fats, for instance material used to wrap margarine, must be resistant to penetration by greases and fats. Plastic film, metal film and greaseproof and grease-resistant paper fulfil these requirements.
The wrapping material will preferably also be gas-impermeable to the greatest possible extent, in order to prevent atmo¬ spheric oxygen from turning the fat rancid and also to provide a light barrier, since light also has a negative effect on fats and greases. The wrapping material must also be attractive and have good printability, particularly when the material is to be used to wrap consumer products. This requirement often means that it must be possible to print the wrapping material with high qualitative printing methods, such as deep printing methods, which places high demands on the surface smoothness of the material.
The wrapping material must also have a stiffness which will enable it to be used in quick operating packaging machines.
Neither plastic film, metal film nor greaseproof paper fulfil all of these requirements alone.
Plastic film does not provide a sufficiently effective light barrier, or have sufficient stiffness and gas-imperviousness; metal film does not have sufficient stiffness at economically reasonable thicknesses; and greaseproof paper is normally relatively transparent and has poor printability. Consequent¬ ly, laminates comprising two or more of these different materials are used at present, for instance an aluminium foil and paper laminate, or plastic coated paper. Although these laminates fulfil the aforesaid requirements, they are expensive to produce and also difficult to recycle. The ability to recycle such materials has a great and growing significance with regard to the novel concept of recycling packaging materials.
SUMMARY OF THE INVENTION
The object of the invention is to provide greaseproof and grease-resistant paper which eliminates or substantially reduces the aforesaid problems, by coating the greaseproof and grease-resistant paper with a layer which will impart to the paper an effective light barrier, good surface smooth¬ ness, high brightness and high opacity (low transparency), good printing ink absorption, and which will also improve the resistance of the paper to penetration by fat, grease and oils.
These and other objects of the invention are achieved with a material having the characteristic features set forth in the characterizing clause of the following Claim 1.
According to the present invention, grease-resistant paper includes:
Greaseproof paper.
Vegetable parchment. Pergamyn paper.
By greaseproof paper is meant here all types of grease- resistant papers that are comprised essentially of chemical pulp, where grease-resistance is brought about by beating the pulp. By vegetable parchment is meant a paper which has been treated with sulphuric acid, and by pergamyn paper is meant a supercalendered paper produced from heavily beaten pulp, essentially chemical pulp. All of these types of paper are included by the present invention and are hereinafter included in the designation greaseproof and grease-resistant paper(s). The resistance of the paper to penetration oils and greases can also be achieved by treating paper with a surface tension modifying agent, for instance scotchban® from 3M. Such papers are not included by the invention, unless the treatment has been effected on one of the aforesaid types of paper.
Greaseproof and grease-resistant paper may be sized in a conventional way, using techniques well known to the person skilled in this art, in order to improve the imperviouεness of the paper. Surface sizing may include treatment with CMC (carboxymethyl cellulose), polyvinyl alcohol, starch or alginate or combinations thereof.
Greaseproof and grease-resistant paper may also be stock- sized with a hydrophobizing agent to improve the surface properties of the paper, preferably its water-repelling properties, with the aid of known techniques.
Greaseproof and grease-resistant paper may also include a filler, such as titanium dioxide, calcium carbonate, talc, kaolin and aluminium silicate.
Greaseproof paper may also be surface-treated, by calendaring and/or by glazing.
Greaseproof and grease-resistant paper, treated or untreated, for instance in accordance with the aforegoing, having weights per unit area within the range of 20 to 120 g/m2, preferably 30 to 80 g/m2 and suitably 40 to 70 g/m2 will preferably constitute the starting material which, in accordance with the present invention, is coated with a layer that contains pigment, binder, viscosity regulating agent, lubricant and dispersion medium.
The pigment functions to provide the coated paper with an effective light barrier, good surface smoothness, high brightness, high opacity, and good printing-ink absorption properties. According to the present invention, the pigment also contains at least one of the substances taken from the group kaolin, calcium carbonate, talc, titanium dioxide and aluminium silicate. In addition to providing other proper¬ ties, titanium dioxide is also active in preventing the opacity of the coating being affected by any grease or fat that may penetrate the layer. In addition to other proper¬ ties, kaolin also provides the coated paper with a high surface lustre in a possible calendaring or glazing process. Calcium carbonate is a pigment which imparts high brightness to the coated paper. Titanium dioxide is suitably present in the pigment in an amount corresponding to 1-30 parts by weight of the total amount of pigment used.
According to the present invention, the dispersion medium in the coating may be anionic, cationic or nonionic. The most suitable dispersion medium is an anionic dispersion medium in an amount corresponding to 0-0.5 parts by weight for each 100 parts by weight pigment.
According to the present invention, the binder present in the coating will contain at least one of the substances, prefera¬ bly polymers, taken from the group acrylate polymers, acrylonitrile, styrene, butadiene, styrene-butadiene polymers or vinyl acetate polymers, or copolymers or mixtures thereof. There is preferred a binder which contains polyacrylates or copolymers with polyacrylates. The binder is present in the coating in an amount corresponding from 9 to 25 parts by weight, preferably from 12 to 20 parts by weight and most suitably from 13 to 17 parts by weight per 100 parts by weight pigment. According to the present invention, the viscosity regulating agent may include CMC (carboxymethyl cellulose), starch or synthetic water-swelling agents, such as copolymers of acrylic ethyl ester and carboxylic acids. The viscosity regulating agent is present in the coating in an amount corresponding from 0.5 to 3, preferably from 1 to 2 parts by weight per 100 parts by weight pigment.
According to the present invention, the lubricant in the coating may, for instance, include calcium stearate in an amount corresponding from 0 to 2 parts by weight per 100 parts by weight pigment.
The aforedescribed coating has a weight per unit area of from 8 to 25 g/m2, preferably from 13 to 18 g/m2, and most suitably from 13 to 15 g/m2, calculated as an air-dry coating.
The present invention has been found to provide a greaseproof paper that has very good printing properties. For instance, the surface roughness according to Bendtsen (ISO 5636/3) has been improved to about 20 ml/min. (150 mm wp) , which corre¬ sponds to the surface roughness of coated magazine paper or supercalendered paper (sc-paper) . Brightness and opacity have also been markedly improved, and printing tests have given very good results. Grease impenetratability, determined indirectly by measuring air permeance (SCAN P-26), has also been reduced by more than a power of ten.
Other characteristic features and aspects of the invention and advantages afforded thereby will be apparent from the following Claims and also from the following description of a conceivable embodiment of the invention.
DETAILED DESCRIPTION OF AN EMBODIMENT OF THE INVENTION
The preferred embodiment is a greaseproof paper coated with a layer containing pigment, binder, viscosity regulator and dispersion medium.
The greaseproof paper has a weight per unit area of 50 g/m2 and is comprised essentially of heavily beaten, ozone- bleached and peroxide-treated pulp and contains 3 percent by weight titanium dioxide. The paper is surface-sized and has, among other things, the properties set forth in Table 1 below.
The pigment in the coating layer includes 90 percent by weight kaolin having a grain size where 80% is smaller than 2 μm, and 10 percent by weight titanium dioxide. The kaolin used was SPS clay from ECC, and the titanium dioxide used was Rutil RL 68® from Rhόne-Poulenc.
The dispersion medium contained 0.15 parts by weight per 100 parts by weight pigment of an anionic dispersion medium, Polysalz S® from BASF.
The binder in the coating layer included 15 parts by weight per 100 parts by weight pigment of a copolymer of styrene and N-butyl acrylate retailed under the trademark Acronal S-728® from BASF.
The viscosity regulator in the coating layer includes 1.5 parts by weight per 100 parts by weight pigment CMC retailed under the trademark Finnfix 5® from Metsa-Serla OY.
The coating layer had a weight per unit area of 14 g/m2, calculated as an air-dry coating.
The coating layer was glazed in an after-treatment process, wherewith the paper obtained the very good properties disclosed in Table 1 below. Table 1
Prior to After coating coating and glazing
Air permeance (nm/Pas)* Ca 0.1 <0.05 Cobb60 (g/m2)** Ca 30 13 Surface roughness
Bendtsen (ml/rain)*** Ca 400 Ca 20 Brightness ISO % (ISO2470) Ca 77**** >80 Opacity ISO % (IS02471) Ca 63**** Ca 83 Test printing result in deep print press Acceptable Very good
SCAN P-26
ISO 535 (60 sec. )
ISO 5636/3, 150 mm wp
Ozone-bleached paper, aftertreated with peroxide with no titanium dioxide addition.

Claims

1. A greaseproof and grease-resistant wrapping material having good printability, characterized in that the material is comprised of a greaseproof and grease-resistant paper that has been coated with a layer containing pigment and binder.
2. A material according to Claim 1, characterized in that the greaseproof and grease-resistant paper is comprised of one of the paper types taken from the group greaseproof paper, vegetable parchment and pergamyn paper.
3. A material according to Claim 1 and Claim 2, character¬ ized in that prior to coating the greaseproof and grease- resistant paper had a weight per unit area of 20-120 g/m2, preferably 30-80 g/m2 and most suitably 40-70 g/m2.
4. A material according to any one of Claims 1 to 3, characterized in that the greaseproof and grease-resistant paper has been surface-sized or stock-sized prior to applying the coating.
5. A material according to any one of Claims 1 to 4, characterized in that prior to being coated the greaseproof and grease-resistant paper contained at least one of the substances taken from the group titanium dioxide, calcium carbonate, talc, kaolin and aluminium silicate.
6. A material according to any one of Claims 1 to 5, characterized in that the greaseproof paper and grease- resistant paper has been surface-treated by glazing or calendaring prior to applying said coating.
7. A material according to any one of the preceding Claims, characterized in that the pigment includes at least one of the substances taken from the group kaolin, talc, calcium carbonate, titanium dioxide and aluminium silicate.
8. A material according to Claim 7, characterized in that the pigment contains titanium dioxide in an amount corre¬ sponding to between 0 and 100 percent by weight titanium dioxide, preferably 0 to 30 percent by weight, and most suitably 1 to 30 percent by weight.
9. A material according to Claim 7 and Claim 8, character¬ ized in that the pigment contains between 0 and 100 percent by weight kaolin.
10. A material according to any one of Claims 7 to 9, characterized in that the pigment contains between 0 to 100 percent by weight talc.
11. A material according to any one of Claims 7 to 10, characterized in that the pigment contains between 0 and 100 percent by weight calcium carbonate.
12. A material according to any one of the preceding Claims, characterized in that the coating also includes dispersion medium in an amount corresponding to 0-0.5 parts by weight per 100 parts by weight pigment.
13. A material according to any one of the preceding Claims, characterized in that the binder contains at least one of the substances, preferably polymers which include acrylate polymers, acrylonitrile, styrene, butadiene, styrene-buta- diene polymers or vinyl acetate polymers, or copolymers or mixtures thereof, in an amount corresponding from 9 to 25 parts by weight, preferably 12 to 20 parts by weight and most suitably from 13 to 17 parts by weight per 100 parts by weight pigment.
14. A material according to Claim 13, characterized in that the binder is comprised essentially of polyacrylates in an amount corresponding from 9 to 25 parts by weight, preferably from 12 to 20 parts by weight and most suitably from 13 to 17 parts by weight per 100 parts by weight pigment.
15. A material according to Claim 13, characterized in that the binder is comprised essentially of copolymers of styrene and butadiene in an amount of 9 to 25 parts by weight, preferably from 12 to 20 and most suitably from 13 to 17 parts by weight per 100 parts by weight pigment.
16. A material according to Claim 13, characterized in that the binder is comprised essentially of polyvinyl acetate in an amount corresponding from 9 to 25 parts by weight, preferably from 12 to 20 and most suitably from 13 to 17 parts by weight per 100 parts by weight pigment.
17. A material according to any one of the preceding Claims, characterized in that the coating also contains a viscosity regulator, such as CMC (carboxymethyl cellulose), starch or some other synthetic polymer, or in mixture in an amount corresponding from 0.5 to 3, preferably from 1 to 2 parts by weight per 100 parts by weight pigment.
18. A material according to any one of the preceding Claims, characterized in that the coating also contains a lubricant, preferably calcium stearate, in an amount corresponding to from 0-2 parts by weight per 100 parts by weight pigment.
19. A material according to any one of the preceding Claims, characterized in that the coating has a weight per unit area of 8 to 25 g/m2, preferably 13 to 18 g/m2 and most suitably 13 to 15 g/m2, calculated as an air-dry coating.
20. A material according to any one of the preceding Claims, characterized in that the coating has been surface-treated by glazing or calendaring.
PCT/SE1995/001217 1994-11-10 1995-10-18 Greaseproof and grease-resistant wrapping material Ceased WO1996015321A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU38844/95A AU3884495A (en) 1994-11-10 1995-10-18 Greaseproof and grease-resistant wrapping material

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9403857-7 1994-11-10
SE9403857A SE9403857L (en) 1994-11-10 1994-11-10 Fat-dense and fat-resistant cover material

Publications (1)

Publication Number Publication Date
WO1996015321A1 true WO1996015321A1 (en) 1996-05-23

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ID=20395915

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1995/001217 Ceased WO1996015321A1 (en) 1994-11-10 1995-10-18 Greaseproof and grease-resistant wrapping material

Country Status (3)

Country Link
AU (1) AU3884495A (en)
SE (1) SE9403857L (en)
WO (1) WO1996015321A1 (en)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998006900A1 (en) * 1996-08-09 1998-02-19 The West Carrollton Parchment Company Decorative sheet and method of making the same
WO1998054410A1 (en) * 1997-05-28 1998-12-03 Stora Enso Oyj Coated board, a process for its manufacture, and containers and packaging formed therefrom
WO1998054409A1 (en) * 1997-05-28 1998-12-03 Raisio Chemicals Oy Method of forming a transparent and gas-permeability decreasing coating to a paper or board web and a coat formulation for the method
WO1999044909A1 (en) * 1998-03-04 1999-09-10 Peterson Scanproof Aktiebolag Material for trays or packagings
FR2777297A1 (en) * 1998-02-26 1999-10-15 Thibierge Et Comar Transparent or translucent tracing paper for architects, with excellent printing and drawing characteristics
US5968853A (en) * 1997-03-10 1999-10-19 The Procter & Gamble Company Tissue with a moisture barrier
JP2004524857A (en) * 2001-05-17 2004-08-19 メツエ ティッスエ オーワイジェー Baking paper
US7208039B2 (en) 2001-09-07 2007-04-24 Imerys Pigments, Inc. Hyperplaty clays and their use in paper coating and filling, methods for making same, and paper products having improved brightness
WO2007002896A3 (en) * 2005-06-29 2007-07-12 Graphic Packaging Int Inc Packaging material for food items containing permeating oils
WO2008003025A3 (en) * 2006-06-29 2008-03-27 Graphic Packaging Int Inc Packaging material for food items containing permeating oils
US7413601B2 (en) 2000-08-17 2008-08-19 Imerys Pigments, Inc. Kaolin products and their use
US7442281B2 (en) 2000-08-17 2008-10-28 Imerys Minerals Limited Kaolin products and their production
US7915183B2 (en) 2007-07-16 2011-03-29 Luzenac America, Inc. Wax coatings, methods of making coated articles and coated articles therefrom
US8753012B2 (en) 2006-06-29 2014-06-17 Graphic Flexible Packaging, Llc High strength packages and packaging materials
US8826959B2 (en) 2006-06-29 2014-09-09 Graphic Packaging International, Inc. Heat sealing systems and methods, and related articles and materials
EP2940211A1 (en) * 2014-05-02 2015-11-04 Munksjö Oyj Twisting paper
WO2016102094A1 (en) * 2014-12-23 2016-06-30 Delfortgroup Ag Environment-friendly packaging paper for food
WO2016145732A1 (en) * 2015-03-17 2016-09-22 云南中烟工业有限责任公司 High light-transmittance fibre glass surface paper and preparation method therefor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE439509B (en) * 1979-10-10 1985-06-17 Peterson & Son As M SET TO MAKE GREASE PREPARATION RESPECTIVE GREASE PAPER

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE439509B (en) * 1979-10-10 1985-06-17 Peterson & Son As M SET TO MAKE GREASE PREPARATION RESPECTIVE GREASE PAPER

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
SVENSK PAPPERSTIDNING 70, Nr. 20, 31 October 1967, pages 673-682, EINAR BOEHMER, "Paper Roughness as Influenced by Blade and Air Knife Coating". *
YRKESBOK Y-308, SVERIGES INDUSTRIFOERBUND, 1974, page 5. *

Cited By (30)

* Cited by examiner, † Cited by third party
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WO1998006900A1 (en) * 1996-08-09 1998-02-19 The West Carrollton Parchment Company Decorative sheet and method of making the same
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