KR20060037867A - Laminated wallpaper that can be embossed on one side by laminating thin paper and non-woven fabric by coating adhesive on wallpaper base - Google Patents

Abstract

The present invention relates to an adhesive layer and a laminated wallpaper in the cross-sectional embossing when bonding the laminated wallpaper.

Thin paper, non-woven fabric, acrylic inlay, lightweight microcell, pulp powder

Description

Laminated wallpaper that can be laminated with thin paper and non-woven by coating adhesive on the base paper wallpaper

1 is a cross-sectional view of the laminated wallpaper

-Code description for main parts of drawing-

1: Base portion of laminated wallpaper base paper 2: Aqueous adhesive layer

3: laminated paper and nonwoven fabric of laminated upper limbs 4: printed layer on upper limbs

5: surface top coating layer

The existing laminated wallpaper is coated with the gravure printing copper plate on the lower part of the wallpaper base (plain weight 80-100g / ㎡) and coated with adhesive of 20-40g / ㎡, and then the wallpaper base paper portion printed on the other part (printing part) of the wallpaper machine. After lamination, it is embossed.

At this time, the supporting roll of the embossing roller uses a paper roll, in order to engrave the pattern of the engraving roll on the paper roll when the idling roll and the paper roll are idling.

형태의 엠보가 성형된다) 형성되면 건조시켜 포장된다.In this way, when the embossed work is carried out by passing the wallpaper paper laminated in the above state while the same pattern is engraved and embossed on the engraving roll and the paper roll, the laminated wallpaper paper has two patterns (front and back unevenness).

Once the emboss is shaped), it is dried and packaged.

The laminated wallpaper produced in this way causes the embossed pattern to collapse due to shrinkage of starch as the grass dries when the grass is painted during wallpaper construction, or shrinkage of the wallpaper paper due to moisture.

Because of these drawbacks, some choose a three-ply paper lamination method, after which embossing is applied to the back of the wallpaper paper again, but it does not fundamentally solve the above-mentioned problems and also improves the adhesion of the seams during the construction of the wallpaper. In order to press the spatula and the roll, the embossing pattern sits or the embossed pattern is caused by the moisture released from the interior wall after wallpaper construction.

To solve this problem fundamentally, it cannot be solved without filling the space to be embossed.

In the present invention, by applying an adhesive about 50 ~ 300g / ㎡ with a comma kota and a rotary screen to the base portion of the wallpaper base to be laminated, the adhesive layer is dried about 80 to 90% in a drying oven, and then laminated the upper portion of the wallpaper base Post-printing-Top coating-Secondary drying-Embossing-Forming in the order of packing or laminating the upper part of the wallpaper base paper where the adhesive layer is 80-90% dry in the drying oven-Embossing-Wye the surface coating After coating with ping method, etc.-2nd drying-can be in the order of packing.                         

In this way, the properties of the aqueous adhesive layer should be

1) It should be breathable.

2) The adhesive strength should be good when laminating the upper part of the wallpaper base paper with the applied adhesive layer dried at 80 ~ 90%.

3) The embossing formability of the adhesive layer should be good because it cannot use the paper rolls used for general paper wallpaper work and the rubber rolls, silicon rolls and paper rolls used for PVC wallpaper production. In other words, the ordinary synthetic resin, etc., the adhesive strength drops sharply even in the 80 to 90% dried state. In addition, the resin part has a weak embossing formation in the cured state, and the conventional PVC wallpaper sol has a ductility like jelly at high temperature, but has a hard surface hardness at room temperature. Thus, the laminated wallpaper adhesive layer should have a property that can be cured at room temperature and ductile at high temperature.

DETAILED DESCRIPTION In order to solve the problems described above and the accompanying drawings of the present invention will be described in detail.

As shown in FIG. 1, the aqueous adhesive layer may be formed in various ways, such as an aqueous polyester resin, an acrylic resin, an EVA resin, a water soluble rosin paper, a polyethylene resin, and the like. At this time, TG (resin curing temperature at room temperature) of resin is used differently. For example, when TG of acrylic resin is -50 ℃, TG of polyethylene resin is 0 ℃ and TG of EVA resin is -10 ℃. The TG deviation of was changed differently, and the adhesive strength was increased when laminating the adhesive layer after drying. The resin of the polystyrene resin and the resin of the water-soluble rosin system has softness like jelly when given a high temperature again in the dried state. In addition, the reason why TG uses different resins is that embossing may collapse if the resin of the adhesive layer is too soft during embossing after lamination, and when the hardness of the resin is high (when connecting the joint with a spatula and roller) The expressiveness of the roll is poor and when the finished wallpaper is folded, it leaves a crack on the surface of the wallpaper.

For the same reason as above, when TG is dried using a different resin, the hardness and ductility after drying should be adjusted differently.

Conventional synthetic resins are poor in moisture permeability after drying.

In the present invention, in order to solve such problems, pulp powder, wood powder, microcapsule-type lightweight agent (powder foamed with an aqueous foaming agent), aqueous, foaming agent, and lightweight microcells (a type of inorganic filter is formed into a fine particle spherical shape and low specific gravity and Commonly used as a viscosity synergist) or may be used by mixing at a predetermined ratio.

Usually, pulp powder, wood flour, light microcells or the like is used, but an aqueous foaming agent and a microcapsule type lightening agent may be used to prevent shrinkage of the adhesive layer due to moisture.

When using an aqueous foaming agent, caution should be noted that when the aqueous foaming agent is added, moisture such as water contained in the adhesive and water used when the adhesive is mixed, when the adhesive layer evaporates in a drying oven, the aqueous foaming agent is unfoamed and semi-foamed (gelling state in the primary oven). When in the state and subjected to high temperature in the secondary oven, when foaming occurs, the pre-embossed glyphs in the secondary 5 minutes will collapse in the secondary oven.

In addition, paper-printing-secondary drying-embossing may also cause problems. In this case, the water-based foaming agent foams to form a foam bubble on the bonding surface of the paper, thereby degrading the adhesive force, thereby making the paper poor. In order to solve such a problem, a foaming agent foamed at a low temperature, that is, 80 to 100 ° C., or a microcapsule type lightweight agent may be used.

It is also possible to improve the embossing efficiency by transferring heat (electrically between 80 and 200 ° C) to the electric and thermal oils on the embossed engraving rolls, wherein the paper rolls use wool paper rolls (fibers).

In addition, pulp powder, lightweight microcell, wood flour, etc. act as a kind of capillary when mixed in the adhesive layer, which can improve the air permeability and moisture permeability than the unadded adhesive layer, and increases the embossing effect during embossing.

In this way, the resin mixing ratio of the adhesive layer is 2 to 4 kinds of resins having different resins and TGs among resins of an aqueous acrylic resin, an EVA resin, a biodegradable acrylic resin, and a water-soluble rosin resin. At a certain ratio (e.g., polyethylene 1, acrylic resin 2, EVA resin 1, water soluble rosin 1 and polyethylene resin TG is 0 ° C, EVA resin TG -10 ° C, TG -50 ° C and + 5 ° C in acrylic resin, etc.) 30 to 50% by weight, 3 to 10% by weight of water, 0.1 to 0.3% by weight of dispersant, 10 to 30% by weight of CaCO ₃ , 1 to 5% by weight of pulp, powder and wood powder, 3 to 5% by weight of talc 1 to 5% by weight of the cell and microcapsule type lightweight agent, and 3 to 10% by weight of any one of far-infrared radiation materials such as jade, elvan, charcoal powder, ocher, germanium, and illite can be used to add functionality. It can be used by adding 2-5% by weight of the aqueous foaming agent. .

At the time of lamination, the upper part of the wallpaper paper is made of thin paper, nonwoven fabric, etc. At this time, the basis weight of the upper part of the paper is used between 10 and 30 g / m 2 (the normal area of the upper wall of paper is 80 to 100 g / m 2). If the basis weight of the upper limb is high basis weight or no ductility, folding it after lamination will leave a fold after wallpaper construction.

The top coating layer is used to protect the printed film after printing and to improve the scratchability on the surface. At this time, the top coating agent may be used either or mixed with an aqueous urethane resin and an acrylic resin. 1 to 5% by weight of the photocatalyst may be used to impart 1 to 5% by weight of alcohol or 5 to 20% by weight of alcohol, PE, silicone, carnava wax, or the like to give functionality.

Mixing as described above is applied to about 10 ~ 30g / ㎡ by gravure method or wiping method to form a surface top coating layer.

In addition, when applying the flame retardancy of the wallpaper, the base and upper limbs of the flame-retardant wallpaper base paper are applied, and the flame retardant used in the aqueous adhesive layer may use an inorganic flame retardant of aluminum hydroxide, or a phosphate or fluorine-based flame retardant. .

At this time, the mixing ratio is 30 to 30% by mixing 2 to 4 kinds of resins having different TGs and resins such as polystyrene resin, acrylic resin, EVA resin, biodegradable acrylic resin, and water-soluble rosin resin. 50% by weight, water 3-10% by weight dispersant 0.1-0.3% by weight, pulp powder and wood powder 1-5% by weight, lightweight microcell and microcapsule-type lightweight agent 1-5% by weight, wood, rock, loess, 3 to 10% by weight of any one of far-infrared radiation materials such as germanium and illite charcoal powder, phosphate, aluminum hydroxide, fluorine-based flame retardant or mixed 10 to 30% by weight, TiO _{2 2 to} 5% by weight By mixing or adding 2 to 5% by weight of the aqueous foaming agent can be made of flame-retardant laminated wallpaper.

At this time, the upper limb portion of the wallpaper base paper can be used non-flammable foil, non-woven fabric if the adhesive layer has excellent flame retardancy.

It is to provide a laminated wallpaper that can be embossed on one side like a conventional PVC wallpaper.

Claims (6)

Apply adhesive to 50 ~ 300g / m² on the base of the wallpaper using comma-cota, rotary screen, etc., and then dry it by 80 ~ 90% in the first drying oven, then lamination of thin paper, non-woven fabric, etc.-Top coating -2 Tea drying-Embossing-Packing or embossing-Top coating-Secondary drying-Packaging paper that can be produced in packing order after being laminated. After coating 50 ~ 300 g / ㎡ of adhesive on the base of the wallpaper,-Drying-Laminating-Printing-Top coating-Secondary drying-Embossing-In order of packing, heat is transferred to the engraving rolls by electric heating and heating oil. Laminated wallpaper that can be embossed. The adhesive layer is composed of 30 to 50 wt% of a mixture of 2 to 4 kinds of resins having different TGs, such as polyethylene resin, acrylic resin, EVA resin, biodegradable acrylic resin, and water-soluble rosin resin. %, 3 to 10% by weight of water, 0.1 to 0 to 3% by weight of dispersant, 10 to 30% by weight of CaCo ₃ , 1 to 5% by weight of pulp powder and wood powder, 1 to 5% by weight of lightweight microcell and microcapsules , 3 to 5% by weight of talc, 3 to 10% by weight of any one of the luminescent materials such as jade, ganban stone, germanium, ocher, charcoal powder, illite for imparting functionality, or 2 to 5% by weight aqueous foaming agent Adhesive of single-sided embossable laminated wallpaper that can be added and used in%. Flame-retardant wallpaper base paper coated with flame retardant, comma-cotta, rotary screen, etc., about 50-300g / ㎡, dried 80-90% in primary drying oven, and then flame-retardant leaf paper, non-woven fabric After lamination, printing-Top coating-Secondary drying-Embossing-Packing order or flame-retardant cross section that can be produced in order of embossing-Top coating Secondary drying-Packing order after laminating laminated paper or non-woven fabric The wallpaper which is embossed. The adhesive layer of the laminated wallpaper to be flame-retardant is water-based polyethylene resin, acrylic resin, EVA-based resin, biodegradable acrylic-based resin, water-soluble rosin-based resin, and 2-4 kinds of resins having different TG. 30-50% by weight, 3-10% by weight of water, 0.1-0.3% by weight of dispersant, 1-5% by weight of pulp powder and wood powder, 1-5% by weight of light microcell and microcapsule type far-infrared radiation material such as 5% by weight, phosphate, aluminum hydroxide, any one or a mixture selected from 10 to 30% by weight of a flame retardant system of fluorine, 2~5% by weight of TiO ₂ oxide, quartz porphyry, loess, germanium, illite, charcoal minutes Adhesive of a flame-retardant laminated wallpaper which can be used by mixing any one of 3-10 wt% or adding an aqueous blowing agent at 2-5 wt%. 50 to 80% by weight of any one of aqueous urethane resins and acrylic resins or mixed, water or methanol, 5 to 20% by weight of ethyl alcohol, PE, silicon, carnava based wax or mixed 1 to 5 wt%, or 1 to 5 wt% of the photocatalyst in order to impart functionality, the surface top coating agent is applied to about 10-30g / ㎡ by gravure roll method and wiping method.

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