HU197369B - Method for producing laminated material applicable for sports purposes - Google Patents

Abstract

Laminated materials for use in sporting activities as soil cloths and coverings for gliders, and long-gliders. Suitably washed and opt. coloured pref. polyester or polyamide textile base cloth of 40-600 g/m2 wt. is heat treated at 200 deg.C min. and proofed at least twice on both sides. The proofing consists of Base (A) Covering (B) and intermediate (C, optional) layer(s). All pts.wt.: (A) 100 aromatic polyurethane in soln. or dispn. at 25-50 wt.% solids, 2-6 blocked isocyanate, 0-25 pigment paste and 0-15 filler. (B) 100 aliphatic polyurethane soln. or dispn. (25-50 wt.% solids), 0-25 pigment paste, 0-3 thickener 0-4 silicone polymer soln. or emulsion, 0-2 stabiliser, 0-4 polyethylene amine, and (C) 100 mixed aliphatic and aromatic polyurethane soln. as emulsion (25-50 wt.% solids), 0-6 blocked isocyanate, 0-25 pigment paste 0-15 filler, 0-3 thickener, 0-4 silicone polymer soln. or dispn., 0-2 stabiliser and 0-4 polyethylene amine. Individual proofing layers are applied at 50-150 deg.C drying temp. and calendered at 20-130 deg.C.

Description

FIELD OF THE INVENTION The present invention relates to a process for the production of a laminate material suitable for use as a coating material for sports jet aircraft or as a sail material for hang gliders or other sports equipment.

A very serious problem is the production of a material based on a textile based polymer having a relatively low weight per surface, high tear resistance, good resistance to cracking, good water and chemical resistance, and long lasting good form stability.

Known associated materials generally do not meet the above complex set of requirements.

In our experiments, we have found that this problem can be solved by properly pre-treating the fabric carrier of the associated system and applying at least two layers of polyurethane-based composition on one or both sides of the system.

As a primer on a pre-treated textile carrier, a composition comprising 100 parts by weight of a 25 to 50 weight percent solution or dispersion of aromatic polyurethane, 2 to 6 parts by weight of blocked isocyanate, 0 to 25 parts by weight of pigment paste is applied.

The primer is applied by applying one or two coats on both sides of the substrate. The composition is applied by lubrication and layered by drying at 50-150 ° C. The resulting layer adheres well to the textile substrate. The chemical bond formed between the layer and the substrate during the drying process further improves adhesion.

One or two coats are applied as the base coat.

After application of the base coat (s), at least one layer of 25 parts by weight of 100 parts by weight of aliphatic polyurethane is applied to one or both sides to ensure the system is light, weather, chemical or water resistant. 0-25 parts by weight of a pigment paste, 0-3 parts by weight of a thickening agent, preferably an inorganic silicon compound, 0-4 parts by weight of a bis-silicon polymer solution and / or emulsion, 0-2 parts by weight of a stabilizer and 0-4 parts by weight of a polyaziridine.

The topcoat is also formed by drying at 50-150 ° C.

The topcoat is formed by applying at least one, but preferably 2-5, layers.

The top coat adheres well to the base coat. To achieve perfect air tightness and to enhance surface smoothness and water resistance, the multi-layered product can be calendered at 50-100 ° C. Preferably, the fabric carrier is a fabric consisting of polyester or polyamide filaments, and the polyamide is polyamide 6 or polyamide 66 filaments. The yarn backbone and the grease are removed from the textile support by washing and, if necessary, the substrate is dyed or patterned by transfer printing or screen printing.

The substrate is then snow-cured at a temperature of at least 200 ° C to ensure shape and size stability.

The invention thus provides a process for preparing a laminate for sports purposes, preferably as a coating for a sports airplane, or for hang gliding or other sailing, characterized in that the textile carrier, preferably polyester or polyamide, having a weight of 40-600 g / m ^{2 is} pre-treated, optionally colored or press and then heat at a temperature of at least 200 ° C, and then apply at least two coating layers on either or both sides of the treated textile support, of which

A) base layers) of a composition comprising from 25 to 50% by weight of a solution or dispersion of 100 parts by weight of aromatic polyurethane, 2 to 6 parts by weight of blocked isocyanate, 0 to 25 parts by weight pigment paste and 0 to 15 parts by weight based on its total weight, and

B) 25-50 weight percent solution or dispersion of 100 parts by weight of aliphatic polyurethane, 0-25 parts by weight pigment paste, 0-15 parts by weight filler, 0-3 parts by weight thickener, 0-4 parts by weight silicone polymer solution, based on the total weight thereof. or an emulsion, from 0 to 2 parts by weight of a stabilizer and from 0 to 4 parts by weight of a polyaziridine, and optionally

C) 25-50% by weight, based on the total weight of the interlayer (s), of a solution or dispersion of 100 parts by weight of a mixture of aliphatic and aromatic polyurethane, 0-6 parts by weight of blocked isocyanate, 0-25 parts by weight of pigment paste, 0-15 parts by weight. -3 parts by weight of a thickener, 0-4 parts by weight of a silicone polymer solution or emulsion, 0-2 parts by weight of a stabilizer and 0-4 parts by weight of a polyaziridine, the layers are formed by drying each at 50-150 ° C. formed laminate is optionally calendered at 20-130 ° C.

If the laminate is formed of more than two layers per surface, the intermediate layers may also comprise a mixture of polyurethane-based compositions A) and B).

Preferably, the layers are applied by direct lubrication.

Advantages of the product according to the invention:

- high strength, cracking, puncture resistance

- good shape stability, which does not change under the influence of moisture, so the aerodynamic properties of the finished product do not change during use

- excellent light, weather, water and chemical resistance,

- perfect breathability.

The process of the present invention is illustrated by the following examples:

Example 1

From 166 dtex polyamide 66 filaments, a woven yarn of 420/10 cm weft and 320/10 cm weft was made.

The yarn skeleton and the Irides are removed by washing and the tissue is anchored at 225 ° C.

A polyurethane-based composition corresponding to composition A) is applied directly to one side of the fabric carrier thus prepared. After drying at 105 ° C, the composition (B) is applied directly to the already dried plastic layer by lubrication, and the applied layer is dried at 105 ° C. After drying, the lubrication procedures described above on the other side of the tissue carrier are repeated.

.The composition is:

aromatic polyurethane solution, by weight, in% solids 100 parts by weight of blocked isocyanate 4 parts by weight of pigment paste 10 parts by weight

Application rate: 15 g / m ² , Composition B 'Aliphatic polyurethane dispersion 100 parts by weight aqueous pigment paste 15 parts by weight aqueous silicone emulsion 4 parts by weight polyaziridine 2 parts by weight pyrogenic silica gel 1 part by weight stabilizer 1 part by weight

Application rate: 10 g / m ² per coat.

The product obtained has the following characteristics:

m ² weight 180 g / m ² breaking force H 1200 N / 5 cm K 1000 N / 5 cm breaking force H 35 N K 30 N waterproof performance 5 speeds lightfastness 5 speeds air flow rate 0 1 / m ² sec

Example 2

550 dtex high-strength polyester weave filamentből 270/10 cm chain density 160/10 cm vetűléksürüségü fabric with a mass m ² 320 g / ^m2.

Washed as described in Example 1, fixed in snow, and layered with the composition A of Example 1 by direct lubrication. After drying at 110 ° C, the composition corresponding to composition B 1 is layered in two layers and dried at 110 ° C. After drying by direct lubrication on the other side of the web carrier, the above described lubrication procedures are repeated. In order to increase air tightness, the lubricated sheet product is calendered on a calender heated to 50-80 ° C.

. Composition B j:

25% solution of aliphatic polyurethane 100 parts pigment paste 15 parts silicone solution 3 parts sodium aluminum silicate 1.8 parts stabilizer 1 part

Application rate: 10 g / m ² per coat.

The product thus obtained has the following characteristics:

m ^z mass 400 tensile force H 2500 N / 5 cm

K 2000 N / 5 cm further breaking force: H 70 N

K 60 N Water Flux 5 Degree Light Resistance 5 Degree Air Transmission 0 1 / m ² sec.

Claims (2)

PATENT CLAIMS A process for producing a laminate for sports purposes, preferably as a coating for sports aircraft, as a sail for a hang glider or other sports equipment, characterized in that the textile support weighing 40-600 g / m ² , preferably polyester or polyamide, is pre-treated or optionally dyed and then heat treated at a temperature of at least 200 ° C, at least two coating layers are applied to one or both sides of the textile substrate so treated, of which A) base layers) 25 to 50% by weight of a solution or dispersion of 100 parts by weight of aromatic polyurethane based on its total weight, 2-6 parts by weight of a composition containing blocked isocyanate, 0-25 parts by weight pigment paste, 0-15 parts by weight filler, and B) topsheet (s) 25% to 50% by weight of a solution or dispersion of 100 parts by weight of aliphatic polyurethane, 0 to 25 parts by weight pigment paste, 0 to 15 parts filler, 0 to 3 parts by weight based on its total weight, 0-4 parts by weight of a composition comprising 0-4 parts by weight of a silicone polymer solution or emulsion, 0-2 parts by weight of a stabilizer and 0-4 10 parts by weight of a polyaziridine; C) intermediate layer (s), based on its total weight, in a 25 to 50 weight percent solution or dispersion of 100 parts by weight of a mixture of aliphatic and aromatic polyurethane, 0 to 6 parts blocked isocyanate, 0 to 25 parts pigment paste, 0 to 15 parts filler; 3 parts by weight of bulking agent, 0-4 parts by weight of silicone polymer solution or emulsion, 0-2 parts by weight of stabilizer. and 0-4 parts by weight of a polyaziridine composition, the layers are formed by drying at 50-150 ° C each, and the resulting laminate is optionally calendered at -20-130 ° C. 2. A process according to claim 1, wherein the heat treatment of the textile support is carried out at 225 ° C.