HU193254B - Dimensionally stable p.v.c floor of decorative surface and method for producing same - Google Patents

Abstract

The product of the present invention is produced by laminating glass flakes on two sides with a soft PVC foil and laminating a soft PVC film foaming on one side, the laminate being printed on the surface of the foaming foil with an inhibitor-containing paint, then a transparent foil over the foam layer, and on the opposite side a waste PVC. laminate, laminate and cool. The entire floor is suspended in suspension or in bulk based on PVC. No.1 ab -1

Description

BACKGROUND OF THE INVENTION The present invention relates to a decorative, dimensionally stable PVC floor, which is color printed and has a surface embossing pattern that has a special layer structure that provides particularly advantageous quality properties to the floor, while providing an economical method for producing productive calendering, lamination and color printing technologies. a combination that allows the use of low-cost suspension PVC or slurry PVC in bulk throughout the process.

It is known from U.S. Pat.

These floor coverings are soft so they have poor abrasion resistance, are fragile and have a high residual impression; furniture, chairs, tables and cabinet feet therefore leave traces left on them, which undermines the aesthetic effect of the floor covering. Such a layer structure can only be produced using fresh (waste-free) PVC blends, resulting in an expensive product. The backing of the non-woven fleece is particularly disadvantageous in terms of application because, depending on the type of fleece, different adhesives are required to attach to the floor and standard PVC floor adhesives are generally not usable. If the fleece is made of glass, then hand-smoothing, which is inevitable when laying, is dangerous, as the cut glass fibers damage the fingers and palms.

Japanese Patent No. 55-45,000 discloses a PVC flooring having a topcoat, a color printed foam structure, a paper layer and a base layer.

This PVC flooring has the disadvantages of a methodological process in particular, because the paper can only be bonded to the PVC layers by the use of cumbersome bonding technology. In use, paper absorbs water, changing its size because it swells and tends to rot.

An excellent summary of the production technology of decorative surface chemically embossed PVC coatings is given in Helmut Bölle's article "Rubber-Asbest-Kunstsoffe", pp. 546-552, September 1981, entitled "Schaumförmige thermoplastische Kunststoffe mit reliefartig gemusterten Oberflache-Chemisches Prague". side. The article only mentions lubrication procedures using plastic soles, PVC pastes. UK 2,007,673. registration number UK 1,439,952. and U.S. Pat. No. 4,198,456. U.S. Patent Nos. 4,309, 6,119, 6,114, 6,119 and 6,114, are directed to the manufacture of chemical-embossed, reinforced, PVC floor coverings having a decorative surface, applied to a plastic-bearing layer, by a lubricating knife or by roller application2. The disadvantage of these processes is that only the more expensive emulsion PVC powder can be used for both the plastic sol and the paste, and the lubrication process is relatively slow and its productivity is less than that of the calendering. A further disadvantage is that it is not possible to recycle gelled PVC waste in the paste of plastics.

The present invention has overcome these disadvantages. We have developed a PVC floor construction that combines the good qualities of solid and foam PVC flooring. Thus, the PVC floor has a decorative surface which can be achieved by proper chemical treatment of the foam layer. Dimensionally stable thanks to the glass fleece layer inside. Knock-on sound, warm feeling, heat-insulating, which is also the result of the foam layer. Hard, abrasion resistant, with a slight residual impression, which is a feature of compact PVC floors. It lays itself well on the subfloor, which makes installation easier. This is also a feature of filled solid floors. It is made using completely inexpensive PVC suspension powder. Its solid layers may also contain recycled soft PVC waste, which further increases economy and results in a product that recycles waste. Product production is productive because the layers are created using calendering technology.

These advantages have been achieved with a PVC floor characterized by a transparent, abrasion-resistant topcoat, a walking surface that comes into contact with a foam layer with a color printed pattern, which is treated with a soft, compact PVC layer containing glass fleece reinforcement, optionally waste (PVC waste). t) may contain, finally, the floor is sealed with a filled, solid base layer containing PVC waste.

We have developed a process for producing the product of the present invention which is characterized by watering, drying and laminating the glass flake with PVC solution, or by laminating two sides without soft pre-treatment with 200% to 500% of one side of this laminate. foam bleaching foam and kicker-containing soft PVC film or paste and paste the previous foam foil on one side of the watered fleece, and then printing the foil with a color imprint of transparent ink on the surface of the foam foil, film, and on the opposite side, foil containing waste PVC, foaming and cooling. Only suspension PVC is used throughout the process.

The product of the present invention is based on the surprising discovery that the combination of dense soft PVC layers and soft PVC foam according to an embodiment of the present invention results in a PVC floor having only the advantageous properties of PVC foam and solid floors. Thus, reinforced, foamed PVC floors have a decorative surface, dimensionally stable, knock-on sound, warm feel, but at the same time, solid PVC floors have a hard, abrasion-resistant, low-impact finish, are well-suited to standard PVC floor adhesives and .

In the process of the present invention, it is surprising that a reinforced, chemically embossed, foam-containing PVC product is made exclusively or predominantly from low-cost suspension PVC. The reinforcing glass foil can be watered with suspension PVC, but with the precise control of the technology, it can be laminated with soft PVC film without watering so that the soft PVC completely overflows the flute and thus is firmly embedded to provide adequate adhesion. Adequate PVC adhesion to untreated glass flasks is an entirely new solution in itself. Another novelty of the process is to cover the glass flake, which is soaked with solution or untreated, on both sides with soft PVC film. In this way, the foam layer is bonded to the fleece, thereby eliminating blistering upon foaming at the foam-to-fissure contact surface, which occurs in all cases when the foaming layer is in direct contact with the fleece; forming bubbles which continue to exist and cause an inhomogeneous surface. The two layers of soft PVC film of the present invention have sufficient strength to retain the air contained in the fleece without the formation of bladder. And the foaming layer can be laminated to the soft PVC foil without air. The soft PVC foil on the opposite side also plays an important role as it always provides a good adhesion between the debris backing layer and the reinforcing fleece as a transition layer. Otherwise, the adhesion of the glass fleece to the waste backing layer would greatly depend on the quality of the waste material contained therein, so in fact this soft PVC film layer allows the use of a wide variety of waste materials in the backing layer. The nearly constant hardness of the base layer is provided by adding the appropriate amount of chalk filler to the waste. Alternatively, the fleece is impregnated with PVC paste, whereby a thin film layer is formed on both sides of the fleece, which eliminates the need to use two wrapping PVC films.

As stated above, the dimensionally stable PVC flooring having a laminate construction and a decorative surface according to the invention has excellent properties that would not be expected from foamed PVC floors. In addition, the construction of the layers and the production of the finished floor are easy, fast, productive and inexpensive.

An embodiment of the dimensionally stable PVC flooring according to the invention is illustrated in FIG. Figure 1, where: 1. the transparent topcoat or abrasion layer or the running surface,

2. foam layer, 3. soft PVC solid layer, 4. glass fleece, 5. waste base layer.

The following examples illustrate the embodiment of the product according to the invention.

Example 1 sr 46 S-PVC PVC 46 is dissolved in a mixture of 38.5 sr of tetrahydrofuran, 54.8 sr of methylethylketone and 11.5 sr of DOP with 0.23 sr of Ca-Zn stabilizer with stirring at room temperature. This solution is poured into a drinking trough and passed through a solution of glass flour weighing 30-40 g / m ² , 0.20 mm thick and having a tensile strength of at least 50 N / 50 mm in both directions. The soaked flour was dried at 100-130 ° C. The dry matter applied was 30 ± 10 g. We prepare the following soft PVC mixture:

S PVC K == 64 100 sr

DOP 39 _sr epoxidized soybean oil 3 sr

Ca stearate J, 2 sr

Zn stearate 0.4 sr stearin 0.2 sr chalk 50 ' _sr

The mixture is exposed in an extruder or internal mixer and a 0.12 mm thick film is calendered at 140-170 ° C. The resulting film is laminated on both sides of the watered fleece at 150-190 ° C with a roll pressure of 20-30 N / cm at a speed of 15-25 m / min.

We prepare the following soft PVC foamable mixture:

S-PVC K = 64 100 sr

DOP 46.7 sr epoxidized soybean oil 3 sr

Ca stearate 1.5 sr chalk 16 sr

TiO ₂ 6 sr paste 7.9 sr

The paste has the following composition: DOP 2.8 sr dispersant 0.1 sr base PbSO ₄ 0.2 sr azodicarboxylic acid amide 4.3 sr

Zn stearate 0.5 sr

The mixture is decomposed in an extruder or internal mixer and the mixture is calendered at a thickness of 0.3 mm at 140-160 ° C. The foaming ability of the foil is 200-500% at 220 ° C after 3 minutes. The resulting film is laminated to one side of the previously obtained non-woven reinforced soft PVC film at 100-170 ° C with a roll pressure of 2030 N / cm at a speed of 15-25 m / min.

Prepare the following inhibitor printing ink:

-3193254

Solvic 550 GA 5.5 sr Paraloid K 120 N 2.0 sr Mikrolithgelb 2RK 0.3 sr Microlithbord RK 0.3 sr Microlithrot BRK 0.3 sr Mikrolithschwarz CK 0.07 sr Mikrolithweiss RK 5.0 sr methyl ethyl ketone 46.5 sr ethyl acetate 46.5 sr trimellitsavanhid- anhydride 14.0 sr

The laminate obtained above is color-printed on the surface of the foaming film in a manner known per se with the required pattern.

We prepare the following soft PVC mixture:

S-PVC K = 70 100 sr DOP 31 sr epoxidized soybean oil 3 sr Ba-Cd stabilizer 3 sr al kil-ar il-cook t it 0.5 sr stearin 0.3 sr UV absorber 0.16 sr

The mixture was exposed to an extruder and the mixture was calendered at a temperature of 0.27 mm at 140-170 ° C. The resulting film is laminated to the printed side of a color printed laminate at 120-150 ° C with a pressure of 10-30 N / cm at a speed of 5-15 m / min. Prepare the following soft PVC mixture: PVC floor waste 100 sr chalk 45 sr stearin 0.5 _sr

The PVC mixture was exposed in an internal mixer and a film of 0.4 mm thick was calendered at 140-170 ° C. The film thus obtained is laminated to the previously produced laminate, the back side thereof, i.e. the non-fleece soft PVC film side, which lies on the side opposite to the color printing, at 120-150 ° C and a pressure of 10-15 N / cm 5-15 m / min speed.

The resulting laminate is foamed and cooled in a foaming tunnel at 170-235 ° C at 5-15 m / min.

Example 2

Example 1 The glass flake of Example 1 is laminated with the soft PVC film of Example 1 at 170-190 ° C without watering. Hereinafter referred to as

Example 1 was followed.

Example # 3

The same procedure as in Example 1 or 2 is followed, except that the glass foil is laminated in one step with the two soft PVC films and the foaming soft PVC film. In this case, the temperature of the foamed foil must not exceed 170 ° C.

Example # 4

The same procedure as in Example 1 or 2 is followed, except that the compact soft PVC film is laminated to the calender during calendering with the foamed soft PVC film 4 and further described in FIG. follow the example.

Example 5

The procedure of Examples 1 or 2, or 3 or 4 is followed, except that the transparent top foil and the waste base foil are laminated in one step to the color printed and rested laminate.

Example 6

The procedure of Examples 1 or 2, or 3, or 4, or 5 is followed except that the lamination, foaming and cooling of the topsheet and base layer are carried out in one step.

Example 7

1 or 2 or 3 or 4 or 5 or

The procedure of Example 6 is followed, with the difference that the composition of the base waste film is as follows:

PVC floor waste 75 sr soft PVC film waste 25 sr chalk 45 sr stearin 0.5 sr

Example 8

We make PVC paste with the following ingredients:

of merchandise: emulsion PVC K 67 == 100 sr C ₇ -C ₉ alcoholic frog phthalate 40 sr diizodeci 1 drink over 40 sr epex softener 2 sr Br Zn stabilizer 2 sr alkylaryl-based Kose Drink Reducer 3 sr

The PVC paste is rolled onto the fleece. The paste is gelled at 160 ° C. The amount of paste applied is 180-250 g / m ² . The paste has a viscosity of 900-1100 rnPa. 1. Example 1, except that 0.12 mm thick film forming and lamination is absent.

Claims (2)

PATENT CLAIMS 1. Decorative surface, dimensionally stable PVC floor, which is color printed and a. The surface embossing pattern follows the color print, consisting entirely or principally of suspension PVC with a transparent top layer (1), a colored foam layer (2), a glass fleece-dense soft PVC layer (3,4) and a waste base layer (5). ). 2. A process for the production of dimensionally stable PVC flooring having a decorative surface, comprising the use of suspension or bulk suspension PVC during the entire production of the floor by watering and drying with a glass solution with a PVC solution and either laminated on both sides with a soft PVC foil and laminated to a soft PVC foil containing foam blowing agent and kraft onto 200500% foam or PVC paste, then the resulting laminate is dyed with a color printing agent acting as a foaming inhibitor on the surface of the foaming foil; then laminating a transparent soft PVC film to the color printed foam layer of the laminate, and to the opposite side a waste PVC-containing film, then foaming and cooling the laminate.