RU2335589C2 - Method of wallpapers manufacture and wallpapers manufactured by this method - Google Patents

Abstract

FIELD: technological processes.

SUBSTANCE: method includes application of acrylic foam paint on fibrous base, subsequent preliminary drying of applied layer at the temperature of 80-120°C and foaming of acrylic foam paint layer by means of drying at the temperature of 120- 160°C. Prior to application of acrylic foam paint on fibrous base printed pattern is applied, and prior to foaming 25-30% aqueous solution is applied onto layer of acrylic foam paint, at that solution contains binding agent on the basis of polyvinyl acetate copolymer and decorative material at their ratio accordingly from 1:1 to 1:0.2 in amount of 8-10% from foam paint mass. At that application of foam paint is carried out with mass of dry coating of 10-25 g/m². In suggested method decorative material is material selected from group that contains polyethylene terephthalate and aluminium foil with particle size of 0.1-0.5 mm. As binding agent on the basis of polyvinyl acetate copolymer composition is used that contains dispersion of polyvinyl acetate copolymer dispersion, defoaming agent, biocide and water.

EFFECT: expansion of foamed wallpapers assortment.

4 cl, 2 ex

Description

The invention relates to the production of wallpapers and relates to a method for manufacturing wallpapers using foams, as well as wallpapers made by this method.

Currently, in the wallpaper industry, much attention is paid to the development of wallpapers with improved decorative properties and the expansion of the range of these products due to increased demand.

The use of foam paints makes it possible to obtain wallpapers with highly decorative properties due to the use of blowing agents in the composition of paints, which make it possible to obtain a significant increase in the height of the coating level as a result of heat treatment of the canvas.

Thus, using foams, relief structures are obtained on paper and non-woven materials, which are considered as decorative decoration of wallpaper.

The following types of embossed wallpaper obtained using foam are known:

vinyl-foamed wallpaper;

vinyl foam wallpaper and

acrylic foam wallpaper with foam acrylic coatings.

An example of a method for producing vinyl foamed wallpaper is a method for manufacturing a wallpaper by applying a foam paint to a base paper consisting of plastisols based on polyvinyl chloride (PVC), a plasticizer and a foaming agent (see DE 2625051 B2, publ. 07.12.1978).

Dioxyl phthalate, diisooctyl phthalate or dibutyl phthalate are used as a plasticizer, and azodicarbonamide is used as an agent.

The known method has the following negative features:

- the composition of the foam contains chlorine-containing organic compounds and plasticizers;

- the composition of the foam makes it necessary to install in the production of vinyl foamed wallpaper an expensive system of afterburning ventilation emissions from the drying channel.

Accordingly, the methods for producing foamed wallpaper based on acrylic do not have these negative features.

A known method for the manufacture of wallpaper by applying foam paper to a base paper in the form of a water-polymer dispersion of the brand Folco-Alcantoresraum FQ 5608 containing microcapsules and subsequent heat treatment of the coated material at a temperature of 120-150 ° C (see RU 2259434 B2, D21H 27/20 published on August 27, 2005).

In this case, acrylic foam is applied to the surface of the paper by intaglio printing using a shaft, in which 40% of the engraving area has a lineature of 30 lines / cm and a screening depth of 68 μm, and 60% of the area is a lineature of 40 lines / cm and a screening depth of 57 μm.

Embossed acrylic wallpaper obtained in a known manner, have an elastic and transparent coating with a decorative effect "suede".

This effect is obtained by applying an acrylic coating with two levels.

Consumer properties of wallpaper are constantly undergoing changes due to changing consumer demand.

The closest analogue of the proposed method for making wallpapers is a method for making wallpapers by applying acrylic foam onto the fibrous base, then pre-drying the applied layer at a temperature of 80-120 ° C and foaming the foam layer by drying at a temperature of 120-165 ° C (see US 5360826, cl D21H 19/70, publ. 1994).

In the known method using 40-70% aqueous composition containing the following components (dry, in wt.%):

acrylic copolymer 30-90 blowing agent 1.0-8.0 mineral pigment 2.0-30 rheological modifier 0.001-2.0

In this case, a copolymer obtained by copolymerizing an ethylenically unsaturated carboxylic acid selected from the group consisting of acrylic acid, methacrylic acid, crotonic acid, fumaric acid or a mixture thereof, and a monoethylenically unsaturated monomer selected from the group consisting of ethylene, butadiene, butyl methacrylate is used as an acrylic copolymer. , butyl methacrylate, methacryamide or a mixture thereof.

The acrylic copolymer used in the known method comprises from 0.1 to 10 wt.% Of the first monomer (ethylenically unsaturated carboxylic acid) and from 90.0 to 99.9 wt.% Of the second monomer (monoethylenically unsaturated monomer) and may be a mixture of polymers with a molecular weight of 20,000 to 500,000

In the known method, microcapsules with a shell of a thermoplastic resin, for example, based on acrylate monomer, are used as a blowing agent, and base paper or non-woven material is used as a fibrous base.

During the heat treatment of the material coated in a known manner, the maximum possible expansion of the microcapsules occurs. As a result of this, as well as a greater mass of dry coating, a greater height of the coating level is achieved and the pattern looks highly relief.

However, the resulting coating has a lack of decorativeness to date. To increase the decorativeness of the wall material (wallpaper), additional technological techniques are needed.

A new technical result from the use of the present invention is to increase the decorativeness of acrylic foamed wallpaper by giving them the effect of "sparkles" while expanding the range of wallpapers on existing technological equipment in one process.

The technical result is achieved in that in the proposed method for the manufacture of wallpaper, including applying to the fibrous base acrylic foam, subsequent preliminary drying of the applied layer at a temperature of 80-120 ° C and foaming of the foam layer by drying at a temperature of 120-160 ° C, before applying acrylic foams are printed on a fibrous base, and before foaming, a 25-30% aqueous composition is applied to the foam layer containing a binder based on a polyvinyl acetate copolymer and a decorative material ial with their ratio, respectively, from 1: 1 to 1: 0.2 in the amount of 8-10% by weight of the foam, while the application of the foam is carried out with a dry coating weight of 10-25 g / m ² .

In the proposed method, as a decorative material using a material selected from the group comprising particles of polyethylene terephthalate (gold, silver and color) and aluminum foil, with a particle size of 0.1-0.5 mm (0.1 × 0.1 - 0, 5 × 0.5). In this case, the configuration of particles can be square, rhombic, hexagonal and other.

The base paper or non-woven material is used as the fibrous base, and a composition containing the following components (wt.%) Is used as a binder based on a polyvinyl acetate copolymer:

polyvinyl acetate copolymer dispersion 60 antifoam 0.4 biocide 0.1 water rest.

The application of foam on a fibrous base, as well as the application of 25-30% of an aqueous composition containing a binder on a copolymer of polyvinyl acetate and decorative material, is carried out by an intaglio roll on a printing machine.

Foaming is carried out in a drying chamber (tunnel) at t = 120-160 ° C for 30-60 seconds.

In the proposed method, 50-70% dispersion printing acrylic of the brand Folco-Foamcoat FQ 3153 or FQ 3137 is used as acrylic foam; 50-56% dispersion printing ink of the OFT 322-LT brand of the Veika company or of the 15 TPV brand of the Belflexofarb company.

Also, acrylic dispersion paints containing 1-7% polyurethane (SOFT-TOUCH paint from Veika company, FQ 5608 from FOLLMANN company) can be used as acrylic foam in the proposed method.

As a binder of an aqueous composition containing a decorative material, the proposed method can be used binder brand 994005X company "SiEGWERK ink packaging" or a binder brand SOLTA 104 manufactured by LLC Svan.

Wallpaper made in a known manner, have high decorative properties, including optical decorative properties due to the use of paint containing decorative material that gives the wallpaper optical properties, and due to the use of the foaming effect, the wallpaper has a relief surface.

The authors of the present invention, it was found that the application on the surface of dried acrylic foam applied to a fibrous base 25-30% of the specified aqueous composition containing a binder and decorative material from 1: 1 to 1: 0.2 in an amount of 8-10% (by weight foams) leads to a significant increase in the decorative properties of the resulting wallpaper.

The achieved effect is ensured by the fact that in the process of heat treatment (t = 120-160 ° C) of the obtained material, along with the process of expanding the microcapsules and obtaining the expanded surface of the material, a parallel process of fixing the decorative material on the outer surface of the foam coating is carried out.

The location of the decorative material on the outer surface of the foam coating is due to both the quality of the decorative material (light specific gravity of the particle) and its size (particle size 0.1-0.5 mm), and the fixing of the decorative material is carried out through the use of a certain type of binder.

The invention is illustrated by the following examples of its implementation:

Example 1. A method of manufacturing wallpaper is as follows:

A printed pattern is applied to the base paper weighing 110 g / m ² , then OFIK 322-LT acrylic foam from Firm Veika (applying weight 25 g / m ² ) is applied and the applied layer is dried at t = 80-120 ° С for ≈10 sec The foaming layer is applied by an intaglio printing roll in the same way as a 25% aqueous composition containing a binder grade 994005X from SiEGWERK and particles of gold colored polyethylene terephthalate (particle size 0.4 × 0.4 mm) at a ratio of 1: 1. The deposit of the above composition is 10% by weight of the foam.

Then the wallpaper enters the drying chamber (tunnel), where for 30-60 seconds at t = 120-160 ° C, the wallpaper is dried, followed by foaming of the paint.

The resulting wallpaper is tested according to GOST 6810 "Wallpaper. Technical conditions. "

Analysis of the quality of the wallpaper shows that the number of abrasions is 6 according to ICB-ZM.

Aesthetic properties are determined visually. Sample attached.

Example 2. A method of manufacturing wallpaper is carried out analogously to example 1 with the only difference that:

- as an acrylic foam paint use paint brand SOFT-TOUCH company "Veika";

- the mass of the deposit of acrylic foam - 10 g / m ² ;

- use a 30% aqueous composition containing a binder based on a polyvinyl acetate copolymer and decorative material with a ratio of 1: 0.2, respectively;

- as a binder use a binder brand 994005X company "SiEGWERK";

- sediment of the above composition - 8% by weight of the foam.

The resulting wallpaper is tested according to GOST 6810 "Wallpaper. Technical conditions. "

The analysis of quality shows that all the requirements of GOST 6810 are fulfilled while achieving high decorative properties.

Aesthetic properties are determined visually.

Claims (4)

1. A method of manufacturing a wallpaper, comprising applying an acrylic foam to a fibrous base, then pre-drying the applied layer at a temperature of 80-120 ° C and foaming the foam layer by drying at a temperature of 120-160 ° C, characterized in that before applying the acrylic foam to the fibrous the base is applied to a printed pattern, and before foaming, a 25-30% aqueous composition is applied to the foam layer containing a binder based on a polyvinyl acetate copolymer and decorative material with a ratio of 1: 1 to 1: 0.2 in an amount of 8-10% by weight of the foam, while the application of the foam is carried out with a dry coating weight of 10-25 g / m ² . 2. The method according to claim 1, characterized in that as a decorative material using a material selected from the group comprising polyethylene terephthalate and aluminum foil, with a particle size of 0.1-0.5 mm 3. The method according to claim 1 or 2, characterized in that as a binder based on a polyvinyl acetate copolymer, a composition is used containing, wt.%: polyvinyl acetate copolymer dispersion 60 antifoam 0.4 biocide 0.1 water rest 4. Wallpaper, characterized in that they are made by the method according to claim 1.