DE1910476A1 - Receipts for sports facilities - Google Patents

Description

Badische Anilin- & Soda-Fabrik A.G

Our reference: O.Z. 26 047 HWz / Km *

6700 Ludwigshafen, February 28th / February 1969 Coverings for sports facilities

The present invention relates to sheet or plate-shaped Ber would be for sports facilities.

Conventional sports facility coverings generally exist from (1) water-bound inorganic ceilings, e.g. Rotgrand, Röthe-Erde or tuff sand ceilings (especially in outdoor areas),

(2) asphalt or cement ceilings, (3) wooden ceilings (in particular

in roofed systems) or (4) linoleum or polyvinyl chloride ceilings (especially in covered areas).

The above-mentioned coverings are known to have a number of disadvantages on. Water-bound inorganic blankets (1) are e.g. sensitive to weather, maintenance-intensive and only slightly elastic. Asphalt or For example, cement ceilings (2) are too hard; it lacks the desired spring and elasticity properties. Wood ceilings

(3) are e.g. expensive * maintenance-intensive and not elastic enough. Linoleum or polyvinyl chloride ceilings (4), for example, have practically no elasticity.

More recently, attempts have been made to address the disadvantages described eliminate by using coverings made of plastic (plastic ceilings). This type of topping can be essentially divided into two Divide into groups: (I) volume elastic, self-resilient monolithic Ceilings, e.g. those based on polyurethane, and (II) ceilings in which relatively finely divided volumetric materials such as rubber or cork are bonded with plastic binders such as vinyl chloride, Acrylic ester or isobutylene polyacrylates, are connected to one another.

The. The above-mentioned plastic coverings differ from conventional ones As is known, toppings have a number of advantages. You let "But in some properties there is still something to be desired. This applies to a considerable extent Dimensions, e.g. insofar as a reduction in hardness (i.e. a

24/69 - 2 -

00983 8 / Q074

- O.Z. 26 047

increasing reversible deformability or resilience or depth of penetration) and thus a growing loss of energy, in particular in the case of briefly intermittent stressful objects, such as people walking. Another disadvantage is, for example, that any damage to the coverings can only be repaired in a cumbersome manner. ^:

The present invention was based on the object of showing coverings, which are not burdened with the disadvantages described, or are burdened to a significantly lesser extent.

It has been found that this object can be achieved if the coverings have a specially structured structure and are made of special materials are made. ··

The present invention accordingly relates to sheet-like or plate-like coverings for sports facilities. The invention Coverings are characterized in that they are composed of an upper layer (a) and a lower layer (b), where is

a) the top layer is a 3 to 12 mm thick sheet or plate; a thermoplastic molding compound, which has an average elongation at break of 400 to 800 % , a modulus of elasticity of 6o to 100 kg / cm and is composed of Ca ₁ ) 100 parts by weight of bitumen, Ca ₂ ) 50 to 120 parts by weight of an ethylene polymer and - optionally - ( a,) up to 100 parts by weight of a filler, and.

b) the lower layer is a 1 to 10 mm thick sheet or plate

made of elastic foam that is practically fully

■ 2

and a modulus of elasticity of 0.5 to 10 kg / cm

Has.
The following should be said in detail about the structure of the coverings:

With increasing thickness of the upper layer (a) - with the same lower layer (b) in each case - there is an increase in hardness and at the same time an increase in the elasticity of the covering

009838/0074

- 5 <- - ' OZ 26 047

lower layer (b) - with the same upper layer (a) an increase in thickness a decrease in hardness and a decrease in elasticity. .

From the facts presented it can be seen that the invention Coverings can easily be of practically any hardness by a suitable choice of the dimensions of their structural elements and elasticity can be given. ■ .'.._.

The relationships described can be illustrated, for example on surfaces where - under otherwise identical conditions - the peaks of the upper or lower layer (a) or (b) was varied (see table below, in which mean a = thickness of the upper layer in mm, b = thickness of the lower Layer in mm and the measured values = the impact elasticity S in percent according to DIN 53 512).

b-> a
<v Ul 7.5 10 ]
I. * 5 - 16.0 18.9 20th , 0 4, 3 29.5 35.0 39 , 0 6, 0 35.0 36.5 40 > ° 10 , 0 38.0 41.5 38

The upper layer (a) of the coverings according to the invention consists of a certain thermoplastic. Molding compound. Molding compositions of this type are known per se and are described, for example, in the Italian patient publications 707 289 and 779 373 as well as the English patent specification 1 042 303 and the published documents of the Belgian patent 694 900. As has been shown, molding compositions which are composed are particularly suitable from (a ₁ ) 100 parts by weight of bitumen with a penetration (according to DIN 1 995) of 10 to 210 and (a ₂ ) 80 to 100 parts by weight of an ethylene polymer which contains 3 to 70 parts by weight of the n-butyl ester of acrylic acid polymerized into 100 parts by weight of ethylene. The upper layer (a) can be produced by methods and working procedures such as are customary for the thermoplastic molding compositions concerned. The upper layer (a) can be expediently

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. O.Z. 26 047

ßigerweise for example by unpressurized casting ( ^{heated to temperatures of about 200 to 280 0} C) molding compounds in appropriate horizontally lying molds (production of plate-shaped layers) or by extruding the molding compounds (at working temperatures of about 100 to 160 ° C) through slot nozzles (production sheet-like layers).

The lower layer (b) of the coverings according to the invention is a web or plate, which has a certain thickness and made of a certain Foam is made. Tracks or plates of this type are known per se and in the. Commercially available, so see details superfluous .. As has been shown, are particularly suitable Sheets or panels made of a foam that is manufactured ) from polymers of styrene, ethylene or propylene; .

The production of the covering itself from the two layers (a) ' and (b) can be carried out according to methods and working methods as they '■ are customary for the thermoplastic molding compositions concerned in the upper layer (a), in particular by gluing or bonding / ".; λ welding.

Suitable substrates for the coverings according to the invention are hard, surfaces that are as flat as possible, especially those made of bituminous or cement-bound materials.

The coverings can be applied to the substrate after "Methods and working methods that are common for synthetic surfaces are, e.g. by simply laying on or gluing.

.Beschädigungen encountered on the upper layer (a) of the pads according to the invention can be solved in a simple manner in place by the surface of the coatings on temperature, doors of about 180 to 24O ⁰ C heated (in this case, the material is plastically) and - if necessary with the addition of heated new thermoplastic molding compound - smooth out "" ■

The attached drawing shows a covering according to the invention with the upper layer Ca) ″ and the lower layer -Cb) ₀

0-09838 / 0.07.4 =

Claims (1)

• - 51 - O.Z. 26,047 £ -1910A76 Claim Track-like or plate-like coverings for sports facilities, characterized in that they are made up of an upper layer (a) and a lower layer (b), where is a) the upper layer mm has a 3 Isis 12 thick sheet or plate made of a thermoplastic molding composition which eine.mittlere elongation at break of ¹ IOO to 800%, has a modulus of elasticity of 60 to 100 kg / cm and is composed of Ca ₁₎ Bitumen represents 100 parts by weight, (a ₂ ) 50 to 120 parts by weight of an ethylene polymer and - optionally - (a,) up to 100 parts by weight of a filler, and b) the lower layer is a 1 to 10 mm thick sheet or plate an elastic foam that is practically fully resilient ρ and has a modulus of elasticity of 0.5 to 10 kg / cm. Sign. Badische Anilin- & Soda-Fabrik AG 00S 838700t4 Blank page