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
  • D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
  • D21H13/10—Organic non-cellulose 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
  • D21H19/00—Coated paper; Coating material
  • D21H19/36—Coatings with pigments
  • D21H19/38—Coatings with pigments characterised by the 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
  • D21H19/80—Paper comprising more than one coating
  • D21H19/84—Paper comprising more than one coating on both sides of the 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
  • D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
  • D21H25/08—Rearranging applied substances, e.g. metering, smoothing; Removing excess material
  • D21H25/12—Rearranging applied substances, e.g. metering, smoothing; Removing excess material with an essentially cylindrical body, e.g. roll or rod
  • D21H25/14—Rearranging applied substances, e.g. metering, smoothing; Removing excess material with an essentially cylindrical body, e.g. roll or rod the body being a casting drum, a heated roll or a calender
• • 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
  • D21H27/30—Multi-ply
  • D21H27/38—Multi-ply at least one of the sheets having a fibrous composition differing from that of other sheets

Definitions

• the invention relates to a wallpaper substrate for a dry peelable wallpaper with minimal wet stretch.
• This consists of a multilayer web with an underside facing the wall when using the wallpaper and a top facing the room when the wallpaper is used.
• a fibrous cellulosic fibrous base layer and synthetic fibers In between, in the bottom-to-top direction, there are disposed a fibrous cellulosic fibrous base layer and synthetic fibers and a fibrous top layer of a cellulosic non-fiber synthetic pulp mixture.
• the invention also relates to a method for producing a wallpaper substrate for a dry peelable wallpaper with minimal wet stretch, in which a multilayer web is formed with an underside facing the wall when the wallpaper is used and an upper side facing the room when the wallpaper is used.
• a fibrous lower layer composed of a pulp mixture of cellulose and synthetic fibers and a fibrous upper layer of a synthetic fiber-free cellulose fiber mixture are connected to one another.
• a wallpaper substrate and a process for its preparation which consists of a lower layer, in addition to cellulose fibers and thermoplastic Synthetic fibers contains and an upper layer containing only cellulose fibers known. Both layers are glued together by lamination using glue. In addition, the process is conducted in such a way that the synthesis fibers fuse together. This solution is aimed primarily at a good connection of the layers and a good removability of the wallpaper in the case of renovation. Direct printing of this wallpaper substrate is not provided.
• a method and a wallpaper substrate of the aforementioned type is also known from EP 0118 221 Bl.
• a lower phase containing both cellulose and synthetic fibers and an upper cellulosic fiber-containing upper phase are bonded together.
• Direct printing of the substrate is not provided here. Rather, a vinyl layer is applied to the top, which is to serve the subsequent printing.
• the composition of the upper phase serves here for better adhesion of this vinyl layer.
• the object of the invention is now to provide a wallpaper substrate and a method for its production, with a direct, almost error-free printing of the top in good quality in particular by means of direct printing and in this case in particular by intaglio is possible and which is inexpensive to produce.
• a printability should be achieved by minimizing the number of imperfections, so-called missing dots, in the printout.
• the problem is solved on the arrangement side, that the lower layer and the upper layer are matted together by Gautschen, and the upper surface satin and is formed by direct printing, especially for gravure, with a maximum of 1 missing dot per cm 2 printable.
• a multi-layered wallpaper substrate which from a bottom, the bottom facing the wall, consisting of a cellulose and synthetic fiber blend, and an upper facing in the space top, consisting of a cellulose fiber layer, with an applied on the top pigment coating, which was satin finished, and in this way and Way an advantageous surface structure is created, ensures a very good printability in gravure printing with a small number of defects.
• a lower functional layer is applied to the underside.
• this functional layer for example, a curling of the wallpaper can be prevented.
• a further embodiment according to the invention provides that the fibers based on cellulose consist of 50 to 100% of chemically produced fibers and may contain 0 to 50% of mechanically treated fibers and / or 0 to 50% of recovered paper fibers in each case in a supplementary proportion.
• the possibility of adding mechanically processed fibers and / or recovered paper fibers on the one hand improves the range of variation in the structure and, on the other hand, enables cost-effective production.
• a pigment coating forming the upper side is applied to the upper layer.
• the pigment coating contains inorganic, in particular mineral constituents, since these constituents bring about further smoothing with uniform roughness and good ink coverage.
• Preferred mineral materials for the pigment coating are mixed or individually represented by caolins, titanium dioxide, carbonates, talc and special pigments.
• the functional layer has a grammage of 0 to 5 g / m 2
• the upper layer has a grammage of 5 to 40 g / m 2
• the pigment coating a grammage of 5 to 35 g / m 2
• the lower layer has a grammage corresponding to the total grammage of the substrate to be adjusted minus the grammages of the functional layer, the upper layer and the pigment stroke.
• the wallpaper substrate has a total grammage of 60 to 180 g / m 2 .
• the process-side solution of the problem provides that the lower and upper layers, preferably by means of wires, each made of a cellulosic suspension or a cellulosic suspension with admixing synthetic fibers for the lower layer, are formed and then joined together by Gautschen and the top by means of satin with a high print quality suitable for a direct printing, in particular a gravure printing is created and that all processes are carried out at a temperature below the melting temperature of the synthetic fibers.
• the adjustment of the temperature prevents crosslinking of the synthetic fibers, so that the wallpaper substrate retains its flexible basic structure.
• the satin finish for which the pure cellulose structure of the top is very well suited, achieves a very even surface, which helps avoid the creation of missing dots in direct printing.
• the adhesion and processing properties of the wallpaper can be influenced.
• it can be used to prevent curling.
• a pigment coat is applied in situ, which serves on the one hand pre-inking of the wallpaper and on the other hand further improves the surface structure.
• This pigment coating can expediently be applied directly during the production, since an additional treatment step which would require additional handling of the wallpaper substrate rolls is thus avoided.
• a pigment coating forming the upper side is applied separately to the side of the upper layer facing the surface.
• the composite is able to withdraw liquid from the pigment coating very quickly, as a result of which it more quickly reaches a dry state.
• the satinization may be carried out in situ or separately and in both cases by means of a calender.
• the wallpaper substrate 1 according to the invention has a underside 2 facing the wall when the wallpaper is used and an upper side 3 pointing into the room when the wallpaper is used.
• a lower functional layer 4 In between, a lower functional layer 4, a fibrous lower layer 5 of a pulp mixture of cellulose and synthetic fibers and a fibrous upper layer 6 of a synthetic fiber-free cellulose fiber mixture are arranged.
• the lower The layer 5 and the upper layer 6 are matted together by Gautschen.
• a top 3 forming pigment coating 7 On the upper layer 6 a top 3 forming pigment coating 7 is applied.
• the upper side 3 is satined and designed for printing by virtually direct printing, in particular for gravure printing, almost error-free.
• the wallpaper substrate according to the invention is produced on a duplex slow motion machine. It is quite common to produce both layers 5 and 6 from the same pulp mixture of cellulose and synthetic fibers. In contrast, according to the invention, the synthetic fibers are not dosed in the upper layer 6.
• the upper layer 6 is the position which shows after wallpapering the finished wallpaper to the inside of the room.
• the surface 3 produced in this way has a structure which is required for the almost perfect printability in gravure printing, in particular for the small number of imperfections, so-called missing dots.
• a functional layer 4 can be applied to the underside of the lower layer to maintain certain properties, such as, for example, anti-curling, fiber adhesion and the like.
• a wallpaper substrate 1 is specified, which satisfies the highest demands made by the gravure printing.
• This wallpaper substrate 1 thus has properties as it has provided for a gravure conventional wallpaper paper.
• the wallpaper substrate 1 according to the invention was in a Gram maturity range of 130 g / m 2 produced.
• the upper layer was made of 100% cellulose fibers and had a grammage of 35 g / m 2.
• the lower web consisted of a nonwoven wallpaper (cellulose and synthetic fiber mixture) corresponding to the state of the art with a surface weight of 73 g / m 2 .
• starch was applied in a basis weight range of 0.3 g / m 2 for anticurling treatment.
• the inorganic pigment sting was applied in a basis weight range of 22 g / m 2 .
• the wallpaper substrate 1 according to the invention has a surface roughness measured according to Parker Print Surf (DIN ISO 8791-4) of ⁇ 2.0 ⁇ m, in particular ⁇ 1.7 ⁇ m.
• Papers which are currently used in rotogravure for the particular application in question usually have a Parker Print Surf value of ⁇ 1.7 ⁇ m.
• test print in the gravure printing process carried out under industrial conditions showed a closed print image without defects (missing dots).

Landscapes

• Paper (AREA)
• Laminated Bodies (AREA)

Priority Applications (1)

Applications Claiming Priority (3)

Publications (2)

Family

ID=38947384

Family Applications (1)

Country Status (8)

Families Citing this family (5)

Family Cites Families (10)

• 2006
  • 2006-12-12 DE DE102006058929A patent/DE102006058929B4/de not_active Revoked
• 2007
  • 2007-09-18 EP EP07803541A patent/EP2066842B1/fr not_active Revoked
  • 2007-09-18 UA UAA200903959A patent/UA93738C2/uk unknown
  • 2007-09-18 WO PCT/EP2007/059838 patent/WO2008040635A1/fr not_active Ceased
  • 2007-09-18 ES ES07803541T patent/ES2366928T3/es active Active
  • 2007-09-18 AT AT07803541T patent/ATE510963T1/de active
  • 2007-09-18 PL PL07803541T patent/PL2066842T3/pl unknown
  • 2007-09-18 RU RU2009113685/12A patent/RU2428537C2/ru not_active IP Right Cessation

Non-Patent Citations (1)

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