FI64912B - SAETT ATT FRAMSTAELLA VAEDERBESTAENDIG HALKSKYDDAD YTBELAGD OC PROFILERAD PLAOT - Google Patents

Description

rB] {1 ADVERTISEMENT * aq * 0 JMTa lJ '* UTLÄGGN I NGSSKRIFT 04 ?! ^ c («):’ -j en 1934 v - ^ (51) Kv.ik.Va. 3 B 32 B 27/1 15/04 FINLAND I —FI N LAND (21) Ptwnttlhulcemu · - p * t * nttn * öknln | 771659 (22) HakemlipllH - Am »knlng« d «c 2k. 05.77 (23) AlkupWvt - Glltifhrtsda 21.05.77 (41) Become public - Bllvlt offentllj 01.12.77

National Board of Patents and Registration (Nihttrlksip ^ |. Heard | ulkeUun pvm.-

Patent · och registrstyrelsen 'AntBkan utlijd oeh utl.skrlften publlcerid 31.10.83 (32) (33) (31) Pyydetty etuoikeus —Begird prlorltet 31.05.76

Sweden-Sweden (SE) 76θ6θ93-8 (71) SSAB Svenskt St & l Aktiebolag, S-78l 81 Borlänge, Sweden-Sverige (SE) (72) Gösta Inge Bäck, Borlänge, Sweden-Sverige (SE) (7l) Berggren Oy Ab (5I) A process for the production of a weatherproof, non-slip, surface-coated and profiled sheet wherein the plate is coated by a continuous process with a colored layer of 0.01 to 0.3 mm thick organic matter mixed with finely ground solid particles completely surrounded by the organic substance, and after coating, the layer is thermoset and the plate and its layers are profiled. The plate may be a steel plate coated with a surface layer of zinc, aluminum or some other metal, or aluminum and its alloys.

Among the accidents that occur in modern society, slip accidents have unfortunately become more widespread. Attempts have been made to reduce the hazards in many different ways, for example by taping strips with frictional properties at certain points, obtaining a suitable material and structure for the soles of the shoes, etc. Of course, conditions in slippery accidents when driving on sloping roofs are very difficult. This problem has been noticed by the Occupational Safety and Health Board, the Construction Agency, the Department of Construction, where the relevant department managers have discussed the problem of providing a non-slip sheet at low cost by inviting industry to form a non-slip committee.

Covering the water roof with a surface-coated board has won the industry in recent years. This coating is characterized by low weight, is quick and easy to install, can be manufactured at a relatively low cost and can be made aesthetically pleasing thanks to a virtually unlimited range of colors. Compared to previously used roofing materials, it can hardly be said that the risk of slipping has increased with the use of this new roofing material. Nor has it helped reduce the risk of an accident.

There is now a requirement to substantially reduce accidents in connection with work on the roof. To date, no roofing sheet has been present which, with suitable footwear, would increase the friction between it and the sole of the shoe to such an extent that it would be safer to walk on the roof, while maintaining a substantially unchanged appearance, simple and inexpensive manufacturing without compromising weather resistance. One must also think of the large surfaces which are at issue here and which must be identical throughout in terms of non-slip.

The invention described below, the main features of which appear from claim 1, thus includes a method of manufacturing a surface-coated, bent sheet in which the entire surface is non-slip by mixing finely ground solid plastic particles with an organic coating during surface coating. The normal way to coat and profile a sheet is to start with a heat-galvanized, chemically pre-treated and base-painted sheet strip. The pigmented organic surface coating in liquid form, for example silicone polyester, is applied to the sheet surface by continuous roll coating, after which the sheet strip is introduced into an oven for drying and curing. After this heat treatment, the sheet strip goes to the profiling roll plant for shaping into the desired profile and is then cut to the desired dimensions.

After long-term experiments, it has been decided to produce a non-slip coated sheet by adding finely ground plastic particles to the organic coating. In the continuous roll coating, the particles are completely immersed in the organic surface layer and, after treatment in a thermal furnace, a non-slip surface layer is obtained which has the same weather resistance as without the addition. The plate with this surface layer is then profiled in the usual way without the layer being damaged or the tool wear of the profiling plant being significantly altered. In order to demonstrate the friction-saving effect, the risk of slipping has been compared when transported on plates with and without plastic particles in the organic layer. The plates are mounted on an inclined plane, the angle of inclination of which may have been changed. Both itchy and water-cast surfaces have been tested. In this case, it has been found that the plate surfaces to which these plastic particles have been added to the organic layer to prevent slipping have been completely superior. The surface is then transported with footwear which is normally worn by persons working on a slab roof.

Working Example

The hot-dip galvanized steel strip, 0.7 mm thick and 1.2 m wide, underwent the usual pre-treatment, i.e. degreasing, cleaning and chemical surface modification, as well as priming. The sheet was then surface treated with a continuous roll coating. The organic surface coating used in this case consisted of silicone polyester to which 5% by weight of polypropylene particles of the order of 0.15 mm had been added. The sheet strip was then allowed to pass through a heat treatment furnace where the maximum surface temperature of the sheet was measured to be 230 ° C. The thickness of the silicone polyester layer was measured to be 0.030 mm. After the tape was profiled with trapezoidal waves, the tape was cut into sheets.

The plates were then allowed to undergo a series of experiments.

First, their anti-slip ability was tested. The experiment was performed on a roof with a slope of 25 ° to the horizontal. First, the roof was tested in a dry place. The roof was pretty dusty. The experiment was later performed on a wet roof. Water was brought in with buckets. The experiment was performed by several individuals with rubber-soled shoes. The experiment showed that the part of the roof covered with the above plates could also pass unimpeded, but that those parts of the roof covered with similarly prepared plates could not pass upwards, but with the difference that no plastic balls were mixed into the organic layer.

4,64912 Weather resistance was studied in four different experiments.

One specimen for the test according to SIS 18490 was placed in a salt spray chamber for 1000 hours with no noticeable difference compared to the experiment performed without the addition of anti-slip.

One specimen was sent to the Corrosion Institute's research station, Bohus Malmö. The specimen was exposed to air and wind for 8 months from August 1975, and no difference was observed without the anti-slip supplement.

One specimen was sent to Florida, USA, where an experiment similar to the one described above was performed (Bohus Malmön). The trial period was 18 months and no difference could be observed compared to the trial performed without the anti-slip supplement.

One specimen was tested according to ASTM D 3361-74. This is an accelerated test with light and water to determine weather resistance. The test time was 150 hours, and no difference was observed without the non-slip supplement compared to the test performed.

Adhesion during deformation has also been studied with a combination of the test methods "SIS 184172 adhesion assessment" and "SIS 184177 elongation determination", whereby SIS 184177 printing to a depth of 8 mm was performed on SIS 184172 drawings. The attachment was then ignored.

The plastic particles are approximately spherical on the order of 2-6 times the thickness of the organic layer, which is usually 0.01-0.3 mm. The amount of plastic particles should be 1-20% by weight of the organic layer after curing.

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Claims (3)

6491 2 1. For use in the manufacture of light-colored products, in the case of metal plates, in the case of metal plates, in the case of solid-state gaskets, inland finishing of the fleece, the fleece of the flesh of the organic material, the fleece of the flesh of the fleece or the flesh of the flesh of the flesh of the organic fleece . A process for the production of a weatherproof, non-slip and surface-coated sheet, preferably a metal sheet, intended in particular for use as a roof covering, wherein the sheet is coated by a continuous process with a 0.01 to 0.3 mm thick colored layer of finely mixed organic matter ground solid particles completely surrounded by organic matter, and after coating the layer is thermoset and the sheet with layers is profiled, characterized in that the particles are plastic material and their outer dimensions are 2-6 times the thickness of the organic layer. 2. For the purposes of paragraph 1, the headings of the headings of the headings are shown in aluminum, aluminum or metal. A method according to claim 1, characterized in that the plate is made of steel coated with zinc, aluminum or some other metal. Method according to Claim 1, characterized in that the plate is made of aluminum or its alloys. Method according to one of the preceding claims, characterized in that the plastic balls form 1 to 20% by weight of the organic coating layer after curing. 3. For the purposes of paragraph 1, the reference to the plate is made of aluminum or alloy.