EP4419747A1 - Papier peint à surface minérale et son procédé de fabrication - Google Patents

Papier peint à surface minérale et son procédé de fabrication

Info

Publication number
EP4419747A1
EP4419747A1 EP22808632.8A EP22808632A EP4419747A1 EP 4419747 A1 EP4419747 A1 EP 4419747A1 EP 22808632 A EP22808632 A EP 22808632A EP 4419747 A1 EP4419747 A1 EP 4419747A1
Authority
EP
European Patent Office
Prior art keywords
coating
wallpaper
flexible
layer
printing
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.)
Pending
Application number
EP22808632.8A
Other languages
German (de)
English (en)
Inventor
Christian Dams
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.)
Marburger Tapetenfabrik JB Schaefer & Co Kg GmbH
Original Assignee
Marburger Tapetenfabrik JB Schaefer & Co Kg GmbH
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 Marburger Tapetenfabrik JB Schaefer & Co Kg GmbH filed Critical Marburger Tapetenfabrik JB Schaefer & Co Kg GmbH
Publication of EP4419747A1 publication Critical patent/EP4419747A1/fr
Pending 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
    • D21H27/18—Paper- or board-based structures for surface covering
    • D21H27/20—Flexible structures being applied by the user, e.g. wallpaper
    • 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
    • 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
    • D21H19/38—Coatings with pigments characterised by the pigments
    • D21H19/40—Coatings with pigments characterised by the pigments siliceous, e.g. clays

Definitions

  • the invention relates to a wallpaper with a carrier web and a coating according to claim 1 and a method for producing a wallpaper according to claim 18.
  • the PVC plastisols have various disadvantages. For example, they require relatively high processing temperatures in the range from 180° C. to 230° C. for gelling and foaming. They also reduce the breathability of the walls and are sensitive to nicotine (discoloration).
  • the main disadvantage of PVC plastisols lies in their chemical origin, as they are chlorine-containing compounds that cause environmental problems.
  • the polyvinyl chlorides are essentially non-rotting, which is why their disposal can generally only take place by incineration. In doing so, they separate harmful hydrochloric acid vapors and dioxins, which incidentally also occurs in the event of a fire and can pose a serious risk to people.
  • the PVC plastisols always contain plasticizers, essentially phthalates, some of which are released during processing and require expensive collection and incineration plants.
  • DE 42 10 922 A1 therefore proposes as an alternative to use structuring pastes that are essentially free of PVC and plasticizers. Instead, polymer dispersions of vinyl acetate copolymers and acrylate copolymers are used, which contain fillers or pigments in an aqueous system.
  • a polymer dispersion based on a vinyl acetate-ethylene copolymer (EVA), vinyl acetate-maleic acid di-n-butyl ester, vinyl acetate-acrylic acid ester and acrylate copolymers is stated to be particularly favorable.
  • This wallpaper structure proves to be disadvantageous in the light of the consumer trend towards products of ecological and regional origin.
  • the structure of the material allows water vapor to pass through.
  • the wallpaper as such tends not to function as a water reservoir and room climate regulator by absorbing and releasing moisture, but rather promotes mold growth.
  • a clay coating is known from DE 199 23 803 A1, the dried structuring paste of which consists of powdered clay, sheep's wool and cellulose flocculation, which forms a 3-5 mm thick layer on a carrier plate.
  • the mass is first moistened with steam and allowed to swell. The mass is then made pasty with water and applied to the carrier plate in this way.
  • DE 199 23 803 A1 uses dimensionally stable lightweight clay boards as the carrier board, the formation of cracks in which should remain invisible if the room climate is dry for a long time thanks to the coating on the surface. According to DE 199 23 803 A1, this coating forms a solid coating that is optically equivalent to a wallpapered room and is applied pasty and mechanically like plaster.
  • the disadvantage is that such a coating must either be applied to the semi-finished lightweight clay board in advance, resulting in opening and closing butt joints in the finished building, or must be applied to the wall and ceiling in the form of a paste like plaster.
  • moisture is introduced into the building and the construction time is extended.
  • the object of the invention is therefore to provide a wall covering and a method for its production which overcome the disadvantages of the prior art and provide an ecological wall and ceiling covering that promotes indoor climate with simple means and without large amounts of moisture being introduced.
  • the solution should be capable of being retrofitted and assembled by laypeople, and should have a high-quality surface with as few cracks as possible.
  • the invention relates to a wallpaper with a flexible and diffusion-open backing and at least or exactly one flexible coating applied to the backing that contains mineral particles in the form of loam, silt or clay.
  • the hygroscopic properties of this coating with mineral particles ensure a healthy room climate by stabilizing the room air humidity.
  • the mineral particles contribute in particular to water absorption, water binding and water release.
  • minerals and in particular mineral combinations, such as clay, are able to eliminate pollutants and fine dust in the room air.
  • the resulting open-pored structure allows moisture to be transported through the wallpaper.
  • the wallpaper can be easily attached by wallpapering, by skilled workers or laymen alike. The entry of moisture into the building is minimal.
  • the carrier web covers fine cracks in the background so that they are not visible.
  • Loam is a mixture of sand (grain size > 63 pm), silt (grain size > 2 pm) and clay (grain size ⁇ 2 pm).
  • Silt consists of mineral grains, which predominantly (more than 50%) have grain sizes between 0.002 and 0.063 mm.
  • Clay consists of clay minerals, most of which (more than 50%) are fine-grained (grain size ⁇ 2 pm). The determination of the proportion can be determined, for example, in a sludge process or by means of a sludge analysis. Alternatively, a laser diffraction particle size analysis can also be considered.
  • the carrier web can be a wallpaper base paper, a polymer fleece, a cellulose fiber fleece, a woven fabric, a glass fabric or a textile.
  • This allows the wallpaper to be produced on existing systems. It may be possible that only the coating device and possibly a drying section have to be adapted to the requirements of the coating with mineral particles.
  • the flexible coating contains a filler made of starch, a starch derivative or a sugar, for example potato starch. This improves the elasticity of the coating.
  • the coating has a fiber reinforcement, in particular made of natural fibers or cellulose fibers.
  • the fiber reinforcement should have short fibers in particular.
  • the fiber reinforcement increases flexibility and reduces cracking in the coating with fluctuations in humidity.
  • the coating optionally contains at least one lightweight filler, in particular microbeads and/or hollow microspheres. This allows the volume of the coating to be increased without making the wallpaper too heavy for classic wallpapering methods. This is particularly advantageous when producing textured surfaces with spatial depth that would otherwise be quite heavy. With a low weight, the climatically effective surface can also be increased.
  • the coating contains a polymer dispersion in at least largely bound and/or dried form.
  • the polymer dispersion increases the toughness and flexibility of the wallpaper.
  • the fluid components are at least largely released from the coating during manufacture. It is preferably an aqueous dispersion. This usually never dries out completely under real conditions due to humidity. At the same time, water is ecologically harmless.
  • the polymer dispersion is preferably a natural latex. Such is ecological.
  • the coating should be plasticizer-free and/or PVC-free. The elimination of these hazardous substances is good for health.
  • the polymer dispersion consists of water and vinyl acetate, acrylate or copolymers or mixtures thereof.
  • the proportion of mineral particles is preferably at least 10% by weight of the coating.
  • the proportion of mineral particles favors the climatic effectiveness of the wallpaper.
  • the proportion of mineral particles can also be at least 15% by weight, at least 20% by weight, at least 30% by weight, at least 40% by weight and at least 50% by weight.
  • the carrier web may have an inner surface facing the coating that is less smooth than an opposite outer surface. This achieves a particularly good connection of the coating to the inner surface.
  • the coating forms a smooth outside surface. In this way, a highly smooth surface can be created, which can be compared to spatula surfaces and has the look typical of clay.
  • the coating forms a structure on the outside surface.
  • Comparatively insensitive surfaces can thus be achieved, which can also be adapted to different design tastes.
  • the structure can be a grain structure, for example, which is based on the grain size of components of the coating, in particular the mineral particles. The result is a more or less fine, rough surface that is less susceptible to contact stripes and the like than smooth surfaces.
  • the structure can also be based on an unevenly thick application of the coating, and the unevenly thick application has differences in thickness that are greater than the maximum diameter of the grain size of components of the coating, in particular the mineral particles.
  • Technical structures such as regular patterns, artistic representations and organic representations of plants, for example, can be realized that appeal to different consumers.
  • the structures allow a larger effective volume of the coating and create relaxation zones in thinner areas of the material, so that the elasticity of the wallpaper is greater than with a coating of constant thickness.
  • the contact surface with the room air is increased, which increases the dynamics of moisture absorption and other climatic effectiveness.
  • the outside surface is preferably designed to point in the direction of space after installation, ie not point in the direction of the installation substrate.
  • the coating unfolds its absorbing and moisture-regulating properties close to the room and unhindered.
  • the outside surface is intended to be on the visible side of the wallpaper.
  • the wallpaper is preferably rolled and designed to be able to be unrolled, in particular for carrying out a wallpapering process. This facilitates damage-free transport and problem-free storage. In addition, the length can be individually adjusted to the installation location on site.
  • the coating can be a single- or multi-stage printing layer, preferably a rotary printing layer and/or gravure printing layer and/or screen printing layer and/or digital printing layer and/or flexographic printing layer and/or inkjet printing layer and/or offset printing layer and/or spray coating layer.
  • a pressure allows a dosed and uniform and if desired also inhomogeneous application of the coating.
  • a high level of homogeneity can be achieved during application, which is not the case with other Process due to the tendency to segregate the heavy mineral particles causes difficulties.
  • demixing within the applied coating can be reduced, which promotes adhesion and elasticity.
  • structured surfaces are also possible through printing processes.
  • the coating should be 0.5 g/m 2 to 500 g/m 2 , preferably 1.0 g/m 2 to 200 g/m 2 , and more preferably 25 g/m 2 weigh up to 150 g/m 2 . Because the density depends on the percentage of water stored, these values are based on 25% water percentage.
  • a special feature can be that the coating has at least a first and a second layer, the first layer applied to the carrier web preferably being thinner than the further layers applied to the first layer, including the second layer.
  • the first layer then serves in particular as a primer for the second layer, as a result of which the connection to the carrier web is particularly strong.
  • the first layer can be made of the same material as the second layer, or it can be made of a different material than the second layer. Reverse thickness structures are also possible, in which the first layer is thicker than the second layer.
  • a primer containing mineral particles in the form of loam, silt or clay is applied to the outer surface of the carrier web. This improves the hygroscopic interaction with the mounting base. This makes the wallpaper particularly suitable for application to plaster containing clay, where it can conceal cracks that are particularly unsightly.
  • the back coating should also be flexible. Preferably, the back primer is thinner than the facing coating. In addition, the back primer may include the optionally described components of the coating.
  • the invention also relates to a method for producing a wallpaper, comprising the following steps: a. Applying a pasty mineral coating composition containing mineral particles in the form of loam, silt or clay to a flexible carrier web; b. at least partially drying or curing the applied mineral coating composition to form a flexible coating; c. Rolling the assembly of flexible backing sheet and flexible coating into a roll.
  • This process provides an ecological wallpaper that is easy to install in construction with little moisture input. This is particularly successful in the case of refurbishments.
  • the application takes place by a printing method.
  • a homogeneous application of a well-mixed mass can be achieved with printing processes. This can be achieved in single or multi-layer printing processes.
  • the coating composition containing mineral particles in the form of loam, silt or clay additionally contains the following: a. a filler of starch, a starch derivative or a sugar, e.g. potato starch; and/or b. a fiber reinforcement, in particular made of natural fibers or cellulose fibers; and/or c. a lightweight filler, in particular microbeads and/or hollow microspheres; and/or d. a polymer dispersion, preferably a natural latex.
  • the polymer dispersion can consist, for example, of water and also vinyl acetate, acrylate or copolymers or mixtures thereof.
  • the coating composition is preferably free from plasticizers and/or free from PVC.
  • the rheology is adjusted directly before application, preferably printing. This can be mixing and/or tempering and/or adjusting the amount of fluid (e.g. adding water).
  • the drying or curing can optionally be carried out by heating to 80.degree. C. to 300.degree. C., preferably to 100.degree. C. to 200.degree.
  • the tempering preferably takes place in the continuous process of the carrier web unwinding at the beginning of the production line and the rolling up of the unit composed of flexible carrier web and flexible coating to form a roll.
  • FIG. 1 shows a schematic section through a wallpaper with a coating
  • FIG. 2 shows a schematic section through a wallpaper with a coating comprising a first layer and a second layer
  • FIG. 3 shows a schematic section through a wallpaper with a backing primer
  • FIG. 4 shows a schematic view of a wallpaper with a structure in the surface
  • FIG. 5 shows a schematic view of a wallpaper with an embossed structure on the surface.
  • Fig. 1 shows a wallpaper 1 with a flexible and diffusion-open carrier web 2 and a coating 3.
  • the carrier web 2 has an inner surface 21 pointing in the direction of the coating 3 and an outer surface 22.
  • the former is less smooth than the outer surface 22 lying opposite
  • the carrier web 2 can be a wallpaper base, a polymer fleece, a cellulose fiber fleece, a woven fabric, a glass fabric or a textile.
  • the coating 3 is attached to the carrier web 3 and is also flexible. It contains mineral particles 31 in the form of loam, silt or clay in a proportion of at least 10% by weight.
  • the mineral particles 31 contribute in particular to water absorption, water binding and water release, and thus ensure a healthy room climate by stabilizing the room air humidity.
  • a filler 32 made of starch, a starch derivative, or a sugar
  • a fiber reinforcement 33 in particular made of natural fibers or cellulose fibers
  • a lightweight filler 34 in particular microbeads and/or hollow microspheres
  • a polymer dispersion 35 in at least largely bound and/or dried form, in particular a natural latice.
  • the polymer dispersion 35 can consist in particular of water as well as vinyl acetate, acrylate or copolymers or mixtures thereof.
  • the coating 3 is plasticizer-free and PVC-free.
  • the coating 3 forms a smooth outside surface 36 .
  • the mineral particles 31 are at most on the surface 36, but do not protrude from this.
  • the coating 3 can also form a structure 39 on the outside surface 36 .
  • It can be a grain structure, which on the Grain size of components of the coating 3, in particular the mineral particles 31, is based. Portions of the mineral particles 31 protrude from the surface 36 .
  • the structure can also be based on an unevenly thick application of the coating 3, with the unevenly thick application having differences in thickness that are greater than the maximum diameter of the grain size of components of the coating 3, in particular the mineral particles 31.
  • FIG. 5 also shows an embossed structure 39 .
  • the embossed structure 39 can be produced, for example, by means of an embossing roller, optionally also under the influence of temperature.
  • the coating 3 preferably weighs between 0.5 g/m 2 and 500 g/m 2 , preferably between 1.0 g/m 2 and 200 g/m 2 , and more preferably between 25 g/m 2 and 150 g/m 2 2 .
  • the thickness is between 5 ⁇ m and 3000 ⁇ m, preferably between 50 ⁇ m and 1500 ⁇ m.
  • the wallpaper 1 is preferably packed rolled up and should then also be designed so that it can be unrolled.
  • the coating 3 is a single-stage printing layer, which is, for example, a rotary printing layer and/or gravure printing layer and/or screen printing layer and/or digital printing layer and/or flexographic printing layer and/or inkjet printing layer and/or offset printing layer and/or spray coating layer.
  • the wallpaper according to FIG. 2 differs from the wallpaper 1 according to FIG. 1 in that there is a multi-stage printed layer.
  • the coating 3 has a first 37 and a second layer 38, the first layer 37 applied to the carrier web 2 being thinner than the second layer 38 applied to the first layer 37.
  • the first layer 37 then serves as a primer or Primer and can, for example, be applied in a thinner form and optionally at least partially dried in between.
  • the wallpaper according to FIG. 3 is supplemented by a primer 4 on the back compared to the wallpaper according to FIG.
  • This is as thin as the first layer 37 of the coating 3 and can consist of the same material.
  • Such a rear primer 4 improves the hygroscopic passage to the mounting substrate. This is of particular advantage if this also has loam, silt or clay.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Paper (AREA)
  • Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)

Abstract

L'invention concerne un papier peint (1) comprenant une bande de support (2) flexible ouverte à la diffusion et un revêtement (3) flexible appliqué sur la bande de support (2), ledit revêtement contenant des particules minérales (31) sous forme de limon, de silt ou d'argile. L'invention concerne en outre un procédé de fabrication d'un papier peint (1) consistant notamment à appliquer une matière de revêtement minérale pâteuse contenant des particules minérales (31) sous forme de limon, de silt ou d'argile sur une bande de support (2) flexible, à faire sécher ou durcir au moins partiellement la matière de revêtement minérale appliquée pour obtenir un revêtement (3) flexible, puis à enrouler l'ensemble constitué de la bande de support (2) flexible et du revêtement (3) flexible sous la forme d'un rouleau.
EP22808632.8A 2021-10-18 2022-10-17 Papier peint à surface minérale et son procédé de fabrication Pending EP4419747A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102021126981.4A DE102021126981A1 (de) 2021-10-18 2021-10-18 Tapete mit mineralischer Oberfläche und Verfahren zu deren Herstellung
PCT/EP2022/078880 WO2023066883A1 (fr) 2021-10-18 2022-10-17 Papier peint à surface minérale et son procédé de fabrication

Publications (1)

Publication Number Publication Date
EP4419747A1 true EP4419747A1 (fr) 2024-08-28

Family

ID=84360473

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22808632.8A Pending EP4419747A1 (fr) 2021-10-18 2022-10-17 Papier peint à surface minérale et son procédé de fabrication

Country Status (3)

Country Link
EP (1) EP4419747A1 (fr)
DE (1) DE102021126981A1 (fr)
WO (1) WO2023066883A1 (fr)

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0492087B1 (fr) * 1990-12-04 1995-01-18 OPTIPLAST Gesellschaft für Kunststoffspezialbeschichtungen mbH Composition de revêtement pour papiers peints et papier peints fabriqués avec celles-ci
CA2083068C (fr) * 1991-11-18 2002-08-20 Pentti Rissanen Papier peint
DE4210922A1 (de) 1992-04-02 1993-10-07 Schaefer Marburger Tapeten Verfahren zum Herstellen dreidimensional oberflächenstrukturierter Beläge für Wand- und Bodenflächen und Strukturpaste dafür
JPH0757848B2 (ja) * 1992-04-02 1995-06-21 マールブルガー、タペーテンファブリク、ヨット、ベー、シェーファー、ゲゼルシャフト、ミット、ベシュレンクテル、ハフツング、ウント、コンパニー、コマンディット、ゲゼルシャフト 壁表面および床表面用の立体表面構造化した被覆材の製造方法およびそのための構造ペースト
DE9218170U1 (de) * 1992-04-02 1993-11-11 Marburger Tapetenfabrik J.B. Schaefer GmbH & Co KG, 35274 Kirchhain Oberflächenstrukturierte Beläge für Wand- und Bodenflächen, insbesondere Strukturtapeten
JP2764377B2 (ja) 1994-08-05 1998-06-11 日本製紙株式会社 壁紙原紙
DE19923803A1 (de) 1999-05-19 2000-11-23 Dietrich Baron Von Der Ropp Leichtlehmtapete
DE10052295A1 (de) * 2000-10-20 2002-04-25 Follmann & Co Ges Fuer Chemiew Strukturpaste
US20070287345A1 (en) * 2006-06-09 2007-12-13 Philip Confalone Synthetic nonwoven wallcovering with aqueous ground coating
KR100633243B1 (ko) * 2006-07-24 2006-10-12 주식회사 대동이엔씨 천연복합광물질을 함유하는 기능성 벽지 제조방법
KR101342218B1 (ko) * 2008-10-30 2013-12-16 (주)엘지하우시스 바이오 벽지 및 그 제조방법
KR20140100232A (ko) 2013-02-06 2014-08-14 이종학 천연물 면적 확장형 비코팅 천연 벽지
US9707790B2 (en) * 2014-03-17 2017-07-18 Hewlett-Packard Development Company, L.P. Printable media

Also Published As

Publication number Publication date
DE102021126981A1 (de) 2023-04-20
WO2023066883A1 (fr) 2023-04-27

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