The surface of our products is even, smooth, without damage, nicks, bubbles, cracks, or visible foreign inclusions.
The glossiness is achieved by precise settings of production process parameters during sheet extrusion and the special grades of raw materials used.
The precision of the gravimetric dosing system ensures the consistency of the distribution of colour within the extrudate. We use dyes with a lightfastness of 8 points.
Our sheets do not degrade when exposed to UV light and retain their physical and mechanical properties (tensile and flexural strength, impact resistance, etc.) over a long period of time due to the high quality, correct dosage and dispersal of the additives used in the sheet extrusion process.
The protective film protects the product against mechanical damage. The film can be applied on one or both sides of the sheet.
We use domestic and imported virgin raw materials and high-quality dyes with carefully selected characteristics to produce our sheets.
Precisely calibrated technical equipment with correctly adjusted cooling mode and speed of the production process guarantees minimal deviation from nominal thickness, length, width and rectangularity tolerances.
The conformity of the finished products with the specified nominal parameters is checked in accordance with the regulations by the quality control department during the production.
Why don't we use "secondary raw materials"?
Such sheet does not meet the requirements of Russian Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing and cannot be used in contact with drinking water and food.
The use of low quality or secondary raw materials and unnecessary additives deteriorate polymer key parameters, such as strength and technological properties, thermal stability, UV-resistance, chemical resistance, etc.
Low quality sheet is more easily deformed, harder to work with, brittle, fragile and difficult to weld. Due to the presence of impurities some harmful substances may be emitted during the welding process.
Our sheets may be used for the manufacturing of products intended to be in contact with food, potable water and in domestic drinking water supply systems.
Polypropylene and polyethylene ROSTR® sheets meet the requirements of Chapter II of the Uniform Sanitary and Epidemiological and Hygienic Requirements for Goods Subject to Sanitary and Epidemiological Supervision (Control), approved by Decision of the Commission of the Customs Union No 299 of 28.05.2010 (Section 16 "Requirements for plastic materials and articles intended to come into contact with food and in food production" and 3 "Requirements for materials, reagents, equipment used for water treatment and water purification"), as verified by the Russian Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing conclusion No 2764.
Each sheet is labelled with a detailed product information sticker with:
- name of the manufacturer;
- type of material used;
- dimensions;
- serial number;
- batch number;
- production date.
This provides necessary production information of each sheet for effective complaint handling.
The certificate of quality is issued for each product batch and lists the actual values of the product parameters, states and guarantees their conformity with the requirements of technical documentation.
The sheets are palletised, cushioned and sealed with a sturdy, thick protective film to ensure best protection against weathering and to keep them safe during transportation.
The quality of our sheets is confirmed by declarations of conformity registered in the GOST R system, issued by the Federal Agency for Technical Regulation and Metrology.
ROSTR® sheets comply with DIN EN ISO 14632 Extruded sheets of polyethylene (PE-HD) - Requirements and test methods, DIN EN ISO 15013 Plastics - Extruded Sheets of Polypropylene (PP) and are exported to the European Union.
Automatic machine welded joints of ROSTR® sheets show high tensile and flexural strength according to DVS 2203–1, 2, 4, 5 Prüfen von Schweißverbindungen an Tafeln und Rohren aus thermoplastischen Kunststoffen - Prüfverfahren - Anforderungen and GOST R 55142–2012 "Welded joints of thermoplastics sheets and pipes. Test methods".
Our sheets can be welded together by extrusion welding, heated plate welding, hot gas welding in accordance with DVS 2207–1, 3, 4, 11 "Welding of Thermoplastics. Extrusion welding of pipes, piping parts and panels. Processes and requirements" and GOST R 56155–2014 "Welding of polymeric materials. Extrusion welding of pipes, piping parts and panels". The excellent weldability of ROSTR® sheets and the consistency of welding mode parameters from batch to batch is ensured using carefully selected 100% pure raw materials without additives such as secondary materials, talc and chalk.
The warranty period for exploitation 12 months from the sale date.
The warranty period for storage 12 months from the shipment date.
Inspection checklist for plastic sheets
- Inspection of product integrity.
- Verification of labelling and correct marking.
- Inspection of the quality of the packaging.
- Inspection of external appearance, shape and surface quality.
- Verfication of product dimensions.
