EP3260597A1 - Produit en fibres multicouches ayant un taux de migration inhibe d'hydrocarbures aromatiques ou satures et son procede de production - Google Patents

Produit en fibres multicouches ayant un taux de migration inhibe d'hydrocarbures aromatiques ou satures et son procede de production Download PDF

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Publication number
EP3260597A1
EP3260597A1 EP16175642.4A EP16175642A EP3260597A1 EP 3260597 A1 EP3260597 A1 EP 3260597A1 EP 16175642 A EP16175642 A EP 16175642A EP 3260597 A1 EP3260597 A1 EP 3260597A1
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EP
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Prior art keywords
filter material
fibrous
mineral
food
hydrocarbons
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EP16175642.4A
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German (de)
English (en)
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EP3260597B1 (fr
Inventor
Josua LEONHARDT
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Buchmann GmbH
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Buchmann GmbH
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Application filed by Buchmann GmbH filed Critical Buchmann GmbH
Priority to PL16175642T priority Critical patent/PL3260597T3/pl
Priority to EP16175642.4A priority patent/EP3260597B1/fr
Priority to ES16175642T priority patent/ES2744317T3/es
Priority to SI201630342T priority patent/SI3260597T1/sl
Publication of EP3260597A1 publication Critical patent/EP3260597A1/fr
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    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
    • D21F11/02—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines of the Fourdrinier type
    • D21F11/04—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines of the Fourdrinier type paper or board consisting on two or more layers
    • 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
    • D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
    • D21H11/14—Secondary fibres
    • 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
    • D21H17/68—Water-insoluble compounds, e.g. fillers, pigments siliceous, e.g. clays

Definitions

  • the present invention relates to a process for the production of a multi-ply fiber product, in particular a foodstuff packaging, with a compared to recycled fibers based fiber products reduced migration behavior of aromatic hydrocarbons, in particular aromatic mineral oil hydrocarbons (MOAH) and / or saturated hydrocarbons, in particular saturated mineral oil hydrocarbons (MOSH ), in which two or more fibrous layers are produced from a pulp suspension.
  • aromatic hydrocarbons in particular aromatic mineral oil hydrocarbons (MOAH) and / or saturated hydrocarbons, in particular saturated mineral oil hydrocarbons (MOSH ), in which two or more fibrous layers are produced from a pulp suspension.
  • the inventive method is characterized in that in at least one fibrous layer of the fiber product, a mineral filter material selected from the group of bentonites and / or saponites is added.
  • the pulp product of the present invention has an inhibited migration rate, i. the migration of MOAH and / or MOSH compounds from the pulp product (e.g., cardboard or paper) to the food is
  • Food packaging often consists of cardboard or paper and thus of vegetable fibers. These fibers can be obtained mechanically or chemically from plants or as so-called “secondary fibers" from waste paper.
  • the food comes into direct contact with the product packaging, which is particularly problematic if the food packaging contains mineral oils that can migrate into the food. These include, in particular, saturated mineral oil hydrocarbons (MOSH) and aromatic mineral oil hydrocarbons (MOAH). Even small amounts of these substances can lead to health problems in the consumption of foodstuffs, up to serious diseases such as cancer.
  • MOSH saturated mineral oil hydrocarbons
  • MOAH aromatic mineral oil hydrocarbons
  • Particularly susceptible to the transfer of mineral oil components of recycled packaging are durable foods, such as pasta or rice. Particularly vulnerable are recycled fiber-containing and / or printed folding cartons or recycled corrugated cardboard.
  • a major cause and significant source of mineral oil constituents in the food chain is the use of mineral oil-containing newspaper inks, which pass through the recycling cycle in food packaging from secondary pulps.
  • There are other entry paths of MOSH / MOAH in the manufacturing and processing process for example due to the use of lubricants in primary production.
  • the migration of MOAH and MOSH into foodstuffs to be packaged does not only occur in fiber products made from recycled fibers, but also in virgin fibers, which are stored or transported in recycled packaging.
  • MOSH and MOAH compounds While short-chain MOSH and MOAH compounds generally do not pose a problem because they evaporate in the drying process of paper and board making, the long-chain compounds are very migratory and therefore remain permanently in the fiber product.
  • MOSH and MOAH which do not evaporate due to the molecular weight in the drying process of paper or board production, but remain in the fiber product but are still capable of migration.
  • secondary fibrous cartons having a gray backside with a volume of between 1.3 and 1.45 cm 3 / g contents of 50 to 500 ppm MOSH and / or MOAH can be detected.
  • the extent to which migration of MOSH and MOAH compounds from the packaging to the food actually takes place depends on a large number of influencing factors.
  • packaging design in particular the ratio of mass of the packaging to mass of the food, the starting content of MOSH and MOAH in the packaging material, the storage temperature, the storage life, the particle size or specific surface of the food to be packaged, the polarity of the food and the Presence of diffusion-tight intermediate packaging.
  • activated carbon as filter material has significant disadvantages. This includes, for example, the entry of deep black pigments in the manufacturing process and ultimately the final product. Furthermore, a blackening of the circulating waters within the manufacturing process by unretained, i. particles retained on the forming screen. The black coloration of the pulp layer caused by the activated carbon is therefore undesirable, even if the layer is not visible from the outside. For example, when the cardboard is torn, fine carbon dust could be released, even if the filter material is part of an inner fibrous layer.
  • the migration value or rate indicates the amount (expressed in mg) that migrates within 10 days at a defined temperature (for example, from 40 ° or 60 ° C) to one kilogram of food.
  • a defined temperature for example, from 40 ° or 60 ° C.
  • the determination of mineral oil levels in food is considered to be extremely demanding, as it is a complex mixture that must be quantified as the sum of all components. In most cases, gas chromatographic analyzes are used, but they give very broad signals.
  • the simplest method for determining MOSH and MOAH involves the use of liquid chromatography gas chromatography flame ionization detection, LC-GC-FID (Federal Institute for Risk Assessment, BfR, determination of hydrocarbons from mineral oil (MOSH or MOAH) or plastics (POSH, PAO) in Packaging materials and dry foods by means of solid phase extraction and GC-FID, www.bfr.bund.de).
  • LC-GC-FID Frderal Institute for Risk Assessment, BfR, determination of hydrocarbons from mineral oil (MOSH or MOAH) or plastics (POSH, PAO) in Packaging materials and dry foods by means of solid phase extraction and GC-FID, www.bfr.bund.de).
  • An HPLC separation of MOSH and MOAH fractions can be carried out by means of normal phase chromatography, wherein the fractions are further separated by GC and detected with a FID.
  • the content of mineral oil components correlates with the proportion of recycled fibers in the packaging carton, wherein cardboard packaging with a high mineral oil content does not necessarily lead to increased loads in the food.
  • cardboard packaging with a high mineral oil content does not necessarily lead to increased loads in the food.
  • barriers used in children's nutritional products eg inner bags
  • Conspicuously high loads are, however, to be demonstrated, for example, in cereal bar, biscuit and biscuit packagings ( F. Armellini, Institute for Environmental and Food Safety of Vorarlberg; Mineral oil components in food (2012 )).
  • Bentonite is also used for impurity binding or Störstoffmaskleiter.
  • EP 0 760 406 A2 a method for masking dye particles in papermaking by retention of adherent particles on the cellulose fibers.
  • bentonite for impurity binding is also part of the DE 10 2005 039 850 A1 as well as the DE 10 2004 060 587 A1 .
  • Bentonite is added to the paper pulp or fiber pulp in order to achieve bonding of the impurities to the bentonite. By adding bentonite, adhesive substances are so wetted that they are no longer sticky and no longer tend to adhere to process machines (contaminant masking).
  • the inventive method is directed to the production of a migration-inhibiting multilayer fiber product, in particular a food packaging, with respect to a recycling fiber-based fiber product reduced migration behavior of aromatic hydrocarbons, especially aromatic mineral oil hydrocarbons (MOAH) and / or saturated hydrocarbons, in particular saturated mineral oil hydrocarbons (MOSH), in which two or more fiber layers are produced from a pulp suspension.
  • aromatic hydrocarbons especially aromatic mineral oil hydrocarbons (MOAH) and / or saturated hydrocarbons, in particular saturated mineral oil hydrocarbons (MOSH), in which two or more fiber layers are produced from a pulp suspension.
  • MOAH aromatic mineral oil hydrocarbons
  • MOSH saturated mineral oil hydrocarbons
  • a filter material based on a modified montmorillonite is used as the bentonite component.
  • the mineral filter material can be registered in different ways in the fiber product or applied to the fiber product.
  • the pulp suspension is added before the formation of the pulp layers.
  • the pulp suspension is added depending on the particular individual layer of the fibrous product (eg folding carton) 3 to 25 wt .-% filter material, based on the oven-dry pulp.
  • the mineral filter material is added as a dry product or as a pigment suspension, preferably with a solids content of 3 to 40 wt .-%, preferably between 3 to 25 wt .-%, added.
  • at least 20% by weight of mineral filter material, based on the dry weight are admixed.
  • not more than 25% by weight, preferably not more than 40% by weight, of mineral filter material, ie bentonite and / or saponite is added to the fibrous layer or introduced into the fibrous product.
  • the entry of the mineral filter material can take place in one or more fibrous layers. In this case, the dosage in the individual or in all layers be different from the fiber product.
  • An intermediate layer denotes an additional layer which is inserted during the production process and which is arranged between two fibrous layers of the fibrous product and which comprises mineral filter material.
  • the mineral filter material is incorporated into one or more fibrous layers or into a single intermediate layer facing the food to be packaged of the finished product package.
  • the addition of the mineral filter material of the invention to the food-attractant pulp layer has been found to be the most effective method of reducing the migration behavior of mineral oil hydrocarbons (MOAH) and / or saturated mineral oil hydrocarbons (MOSH).
  • food-grade sheet is the cardboard backside of a carton box.
  • the entry of the mineral filter material is therefore preferably in a fibrous layer, which faces the food to be packaged, while other fibrous layers of the fibrous products do not contain the mineral filter material. It is preferably provided that at least one fibrous layer of the fibrous product contains no mineral filter material or only in such amounts as are present anyway during the production process (for example for the removal of contaminants).
  • a polyacrylamide for concentrating the mineral filter material in the fiber structure of the fibrous layer preferably a polyacrylamide, a polyethyleneimine or a polyvinylamine are added to the pulp suspension in addition.
  • polyacrylamide is added at a weight fraction of 0.005 to 0.05% and / or a polyethyleneimine and / or a polyvinylamine, in each case preferably with a weight fraction of 0.025 to 0.2%.
  • the addition of the mineral filter material in the pulp suspension can be done between each process stage of pulp processing or within the constant part of a paper or board machine. It must be ensured that a sufficient concentration of the filter material is present in the finished fiber product so that the migration value for MOSH is less than 2 mg / kg of food and / or the migration value for MOAH is less than 0.5 mg / kg of food.
  • the mineral filter material is metered between the individual fiber layers of the multilayer fiber product.
  • the mineral filter material is preferably sprayed into the sheet-forming zone of the at least one fibrous layer. This preferably takes place with the aid of a spray tube of the sheet-forming zone of the paper or board machine, preferably bentonite and / or saponite suspensions having a solids content of from 3 to 40% being used.
  • the pulp suspension is sprayed between the individual layers before Vergautschung.
  • cone jet nozzles are used, which enable a homogeneous distribution of the mineral filter material over the transverse profile of the fiber product.
  • the mineral filter material is applied directly to the surface of the at least one fibrous layer of the fiber product. This can be done for example as an application in the form of a coating color.
  • the mineral filter material is present as a coating color pigment, with pigment fractions of 20 to 60% have proved advantageous, since these are easier to handle due to their rheological properties.
  • starch or polymer dispersions it is also possible to use starch or polymer dispersions. Binder proportions of between 10 and 20%, based on the oven-dried pigment, are preferably used.
  • the filter material may be applied as a "coating color" to a food-facing side of the fiber product by means of a roller blade, a doctor blade, an air brush or a curtain coater, i. the cardboard or paper.
  • the present invention also relates to a migration-inhibiting multilayer fiber product produced by the process according to the invention, in particular a food packaging, having a reduced migration behavior of aromatic hydrocarbons, in particular aromatic mineral oil hydrocarbons (MOAH) and / or saturated hydrocarbons, for a fibrous product to be packaged against recycled fiber-based fiber products , in particular saturated mineral oil hydrocarbons (MOSH), wherein the fiber product consists of two or more fibrous layers.
  • the fibrous product according to the invention is characterized in that at least one fibrous layer of the multilayer fibrous product comprises a mineral filter material selected from the group of bentonites and / or saponites.
  • the entry or application of the mineral filter material preferably takes place at the food-attracting fibrous layer of the fibrous product, ie at the inside of the foodstuff packaging.
  • an intermediate layer which comprises the mineral material according to the invention is arranged between two fibrous material layers of the production process.
  • the fibrous layer of the multi-ply fiber product contains mineral filter material with a migration value for MOSH less than 2 mg / kg of food and / or a migration value for MOAH less than 0.5 mg / kg of food.
  • the migration inhibition is so strong that the migration value for MOSH is less than 1 mg / kg of food and / or the migration value for MOAH is less than 0.25 mg / kg of food.
  • the mineral filter material is preferably present in the fibrous layer at a weight fraction of from 3 to 40% by weight.
  • the use of a modified montmorillonite as bentonite has proven to be particularly advantageous for the migration behavior.
  • a variant of the fiber product according to the invention provides that the mineral filter material is contained in at least one, preferably several fibrous layers.
  • the invention further relates to the use of such a multilayer fiber product, in particular a food package, for reducing the migration of aromatic hydrocarbons, in particular aromatic mineral oil hydrocarbons (MOAH) and / or saturated hydrocarbons, in particular saturated mineral oil hydrocarbons (MOSH), in a to be packaged Foods.
  • aromatic hydrocarbons in particular aromatic mineral oil hydrocarbons (MOAH) and / or saturated hydrocarbons, in particular saturated mineral oil hydrocarbons (MOSH)
  • the entry or application of the mineral filter material on the food-facing side offers significant advantages, since the material is fully recyclable and the introduction of the filter material is parallel to the production of the paper or cardboard. As a result, no further value creation step is required.
  • a variant embodiment provides for a four-ply cardboard in which the mineral filter material is applied or incorporated in one or more fibrous layers.
  • a box consists of an insert, a back with a backsize, a protective layer and a cover layer with top coat.
  • the protective layer is missing, so that it consists of a cover layer with top coat, an insert and a back with backside stroke.
  • the mineral filter material can thus be located in the fiber structure of the insert or the back.
  • the reverse side coat of the back can also be provided with a coating pigment which contains a bentonite and / or saponite.
  • the filter material according to the invention can also be integrated between the insert and the back in the fiber structure.
  • two layers of a four-ply paperboard were spiked with a modified montmorillonite-based bentonite. Depending on the individual layer, 5 to 15% of bentonite, based on the oven-dry fiber mass, was added to the pulp suspension.
  • the migration behavior was analyzed analytically. In this case, the cardboard with the filter material and a standard quality without filter material was compared with respect to the migration of MOAH. The migration was tested on the basis of a test food substitute (modified polyphenylene oxide MPPO, Tenax®) after 10 days at a temperature of 60 ° C.
  • Fig. 1 The result of the investigation is in Fig. 1 shown. It can be clearly seen that the MOAH migration (C16-C35) in the filter cardboard samples according to the invention could be reduced almost completely in comparison to conventional folding boxboard.
  • the migration limit is determined on the basis of an EU cube model, which is a cube-shaped Packaging with an edge length of 1 dm, which is filled with 1 kg of food. As a result, according to this model, 6 dm 2 of packaging material faces one kg of food.
  • Fig. 2 a simplified process schematic is shown to show preferred metering points for introducing the mineral filter material of the present invention into the pulp layer in the area of the constant part of a papermaking machine.
  • the introduction of the mineral filter material is therefore preferably in front of the machine chest before the use of white water, before loading the headbox pump, before the pressure sorter or before the headbox.
  • these metering points for the filter material in the process flow are possible.
  • Fig. 3 shows a variant of a multi-ply fiber product 1 in the form of a carton in cross section.
  • the fibrous product 1 comprises a cover layer 3 with an outer cover coat 2, a protective layer 4, an insert 5 and a back 6 with an adjoining backsheet 7.
  • the fibrous product 1 comprises the cover layer 3, the protective layer 4, the insert 5 and / or the back 6 one or more fibrous layers.
  • the back 6 of the fiber product 1 is usually the food-facing fibrous layer and is mixed with a mineral filter material 9 (bentonite) in migration-inhibiting concentrations for MOAH and / or MOSH.
  • the bentonite compound is preferably present with a MOAH and MOSH weight content of 3 to 40 wt .-% in the fibrous layer of the back 6.
  • a further fibrous layer preferably the insert 5, be offset with a filter material 9 in this concentration range, while the remaining fibrous layers contain no or possibly production-related concentrations (eg due to the removal of impurities) of bentonite as a mineral filter material 9.
  • Fig. 4 shows a further variant of a fibrous product 1 (cardboard) in cross-section, which comprises a cover layer 3 with a top coat 2, a protective layer 4, an insert 5 and a back 6 with a backsheet 7.
  • the backside line 7 a mineral filter material 9.
  • the backsheet 7 may be offset with a mineral filter material 9.
  • Fig. 5 shows a further variant of a fibrous product 1 (cardboard) in cross-section, which also has a cover layer 3 with a top coat 2, a protective layer 4, an insert 5 and a back 6 with a backsheet 7.
  • the back 6 is in this Embodiment offset with a mineral filter material 9.
  • a mineral filter material 9 is integrated as an intermediate layer 8 between the insert 5 and the back 6 in the fiber structure.
  • the intermediate layer 8 is preferably located to the food-facing side of the fiber product 1 between two adjacent pulp layers.
  • the intermediate layer 8 contains the mineral filter material (eg bentonite and / or saponite) in migration-inhibiting concentrations, but not the fibrous layers 3, 4, 5, 6.
  • the mineral filter material 9 consists of a modified montmorillonite at a concentration of about 25% by weight.
  • the multi-layer migration-resistant fiber-fabric product according to the invention leads to a significant reduction or even complete reduction of the migration value for MOAH and MOSH under the limit values which are to be evaluated as safe from a health point of view.
  • the fiber product according to the invention is particularly suitable as food packaging, since hazardous mineral oil-containing hydrocarbons and their evaporation are prevented on or in the food by preventing the migration.

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  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Paper (AREA)
  • Wrappers (AREA)
EP16175642.4A 2016-06-22 2016-06-22 Produit en fibres multicouches ayant un taux de migration inhibe d'hydrocarbures aromatiques ou satures et son procede de production Revoked EP3260597B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
PL16175642T PL3260597T3 (pl) 2016-06-22 2016-06-22 Wielowarstwowy wyrób z materiału włóknistego o spowolnionej szybkości migracji węglowodorów aromatycznych lub węglowodorów nasyconych i sposób jego wytwarzania
EP16175642.4A EP3260597B1 (fr) 2016-06-22 2016-06-22 Produit en fibres multicouches ayant un taux de migration inhibe d'hydrocarbures aromatiques ou satures et son procede de production
ES16175642T ES2744317T3 (es) 2016-06-22 2016-06-22 Producto de fibra multicapa con un ritmo de migración inhibido de hidrocarburos aromáticos o saturados y procedimiento para su fabricación
SI201630342T SI3260597T1 (sl) 2016-06-22 2016-06-22 Večplastni izdelek iz vlaken z zavrto hitrostjo migracije aromatskih ali nasičenih ogljikovodikov in postopek za njegovo izdelavo

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16175642.4A EP3260597B1 (fr) 2016-06-22 2016-06-22 Produit en fibres multicouches ayant un taux de migration inhibe d'hydrocarbures aromatiques ou satures et son procede de production

Publications (2)

Publication Number Publication Date
EP3260597A1 true EP3260597A1 (fr) 2017-12-27
EP3260597B1 EP3260597B1 (fr) 2019-06-05

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EP16175642.4A Revoked EP3260597B1 (fr) 2016-06-22 2016-06-22 Produit en fibres multicouches ayant un taux de migration inhibe d'hydrocarbures aromatiques ou satures et son procede de production

Country Status (4)

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EP (1) EP3260597B1 (fr)
ES (1) ES2744317T3 (fr)
PL (1) PL3260597T3 (fr)
SI (1) SI3260597T1 (fr)

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US3052595A (en) 1955-05-11 1962-09-04 Dow Chemical Co Method for increasing filler retention in paper
DE3541163A1 (de) 1985-11-21 1987-05-27 Basf Ag Verfahren zur herstellung von papier und karton
EP0017353B2 (fr) 1979-03-28 1992-04-29 Ciba Specialty Chemicals Water Treatments Limited Production de papier et de carton
EP0760406A2 (fr) 1995-08-24 1997-03-05 Nalco Canada, Inc. Combinaison d'un poly(dadmac/acrylamide)et d'une bentonite pourle control de la poix dans des procédés de fabrication de papier
EP0235893B2 (fr) 1986-01-29 1998-03-25 Ciba Specialty Chemicals Water Treatments Limited Production de papier et carton
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DE69534985T2 (de) 1994-06-01 2006-11-02 Ciba Speciality Chemicals Water Treatments Ltd., Bradford Papierherstellung
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EP2395148A1 (fr) * 2010-06-11 2011-12-14 Voith Patent GmbH Procédé de fabrication d'un papier rayé
DE102011001617A1 (de) 2011-03-29 2012-10-04 Papierfabrik Hamburger Rieger GmbH & Co. KG Vorrichtung und Verfahren zur Herstellung eines mehrlagigen Verpackungspapiers
WO2012175309A1 (fr) 2011-06-24 2012-12-27 Smurfit Kappa Hoya Papier Und Karton Gmbh Produit à base de fibres pour emballages
WO2014108844A1 (fr) * 2013-01-11 2014-07-17 Basf Se Procédé pour la fabrication de papier et de carton
WO2015040134A1 (fr) * 2013-09-18 2015-03-26 Innogel Ag Matériau d'emballage comportant un revêtement barrière à base d'amidon, matière de revêtement et procédé de fabrication correspondant

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DE102006034602A1 (de) 2006-05-30 2007-12-06 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren zur Erhöhung der Haltbarkeit von Ethylen produzierenden landwirtschaftlichen Erzeugnissen bei Transport, Verkauf, Präsentation und/oder Lagerung
PL2532706T3 (pl) 2011-06-10 2023-06-12 Mayr-Melnhof Karton Ag Sposób wytwarzania powlekanego materiału opakowaniowego oraz materiał opakowaniowy z co najmniej jedną warstwą barierową dla związków hydrofobowych
EP3178648A1 (fr) 2015-12-09 2017-06-14 Cargill, Incorporated Revêtements de protection

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US3052595A (en) 1955-05-11 1962-09-04 Dow Chemical Co Method for increasing filler retention in paper
EP0017353B2 (fr) 1979-03-28 1992-04-29 Ciba Specialty Chemicals Water Treatments Limited Production de papier et de carton
DE3541163A1 (de) 1985-11-21 1987-05-27 Basf Ag Verfahren zur herstellung von papier und karton
EP0235893B2 (fr) 1986-01-29 1998-03-25 Ciba Specialty Chemicals Water Treatments Limited Production de papier et carton
DE69534985T2 (de) 1994-06-01 2006-11-02 Ciba Speciality Chemicals Water Treatments Ltd., Bradford Papierherstellung
EP0760406A2 (fr) 1995-08-24 1997-03-05 Nalco Canada, Inc. Combinaison d'un poly(dadmac/acrylamide)et d'une bentonite pourle control de la poix dans des procédés de fabrication de papier
DE102004060587A1 (de) 2004-12-16 2006-07-06 Süd-Chemie AG Bentonite zur Störstoffbindung in der Papierherstellung
DE102005039850A1 (de) 2005-08-23 2007-03-08 Süd-Chemie AG Stevensit- und/oder Kerolith-haltige Adsorbentien zur Störstoffbindung in der Papierherstellung
WO2008052970A1 (fr) * 2006-10-31 2008-05-08 Basf Se Procédé pour la fabrication d'une bande de matière fibreuse multicouche à partir de fibres cellulosiques
EP2395148A1 (fr) * 2010-06-11 2011-12-14 Voith Patent GmbH Procédé de fabrication d'un papier rayé
DE102011001617A1 (de) 2011-03-29 2012-10-04 Papierfabrik Hamburger Rieger GmbH & Co. KG Vorrichtung und Verfahren zur Herstellung eines mehrlagigen Verpackungspapiers
WO2012175309A1 (fr) 2011-06-24 2012-12-27 Smurfit Kappa Hoya Papier Und Karton Gmbh Produit à base de fibres pour emballages
WO2014108844A1 (fr) * 2013-01-11 2014-07-17 Basf Se Procédé pour la fabrication de papier et de carton
WO2015040134A1 (fr) * 2013-09-18 2015-03-26 Innogel Ag Matériau d'emballage comportant un revêtement barrière à base d'amidon, matière de revêtement et procédé de fabrication correspondant

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Title
JÜRGEN FALBE, MANFRED REGITZ: "Römpp Chemie Lexokon., 9 Auflage", 1995, GEORG THIEME VERLAG, article "Montmorillonite", pages: 2850, 2851, 1pp, XP055480142

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