SK6693Y1 - Six layers tube with inner layer of polybutylene for heating systems - Google Patents

Abstract

Six layers tube with an inner layer of polybutylene for heating systems comprises six layers, and that are an inner layer (1), made of highly flexible and heat-stabilized polybutylene, an adhesive layer (2), which is used to interconnection between the inner layer of polybutylene and another layer, an aluminium layer (3), which forms again a oxygen barrier, an adhesive layer (4) between the aluminium layer (3) and the other layer, a layer of polyester fibres (5) and a outer layer (6) of high quality polyethylene.

Description

The technical solution concerns a six-layer pipe with an inner layer of polybutylene for heating systems.

BACKGROUND OF THE INVENTION

Pipes are the most important part of floor heating and radiate connections. When choosing them, it is important to take into account that the pipe is placed in the floor or in the perimeter structure during its lifetime, and any failure of the pipe would result in damage to the perimeter structure or removal of the floor and subsequent repair. It is therefore very important to take particular account of the quality of pipes for heating systems. From the thermo-technical point of view and heat transfer, copper is the most suitable material for use in heating systems, but its use is cost-intensive and is therefore in most cases replaced by plastic pipes.

In the prior art, plastic pipes are used for underfloor heating and radiate body connections, in which, at high flow rates of the heat transfer medium, air permeability from the medium is increased. On contact of oxygen with the metal components present in the heating system, a chemical reaction occurs, resulting in the formation of iron oxide, which in turn flows in the heating system and causes the formation of deposits. These loose deposits cause the walls of the plastic pipes to be abraded, which are thinned and can be thinned so much that the entire heating system can be opened and destroyed. That is why not all plastic pipes are suitable for use in heating systems.

The basic characteristics that pipes for heating systems must fulfill are oxygen diffusion resistance, heat resistance, pressure resistance, minimum extensibility and abrasion resistance.

The essence of the technical solution

These drawbacks are overcome by a six-layer polybutylene inner layer pipe for heating systems.

The six-layer polybutylene inner layer for heating systems comprises six layers, an inner layer made of a highly flexible and thermally stabilized polybutylene, an adhesive layer that serves to bond between the inner polybutylene layer and another layer, an aluminum-opposing aluminum layer. a barrier layer, an adhesive layer between the aluminum layer and the next layer, a polyester fiber layer, and an outer layer of high-quality polyethylene.

The inner layer of the tube made of highly flexible and thermally stabilized polybutylene is resistant to abrasion and abrasion by loose iron oxide deposits found in the heating system. The wet abrasion test showed up to three times higher abrasion resistance compared to PE-X type plastic pipes (SKZ Wurzburg ASTM No. D 638), which do not have an oxygen barrier.

The aluminum layer forms an oxygen diffusion barrier that completely prevents air oxygen from entering the heat transfer medium.

The polyester fiber layer increases the pipe's high pressure resistance.

The outer layer of high-quality polyethylene is designed to protect the pipe against external damage. It is resistant to cracks under mechanical stress, is flexible and resistant to rapid crack propagation. The 6-layer polybutylene inner layer pipe for heating systems has excellent abrasion resistance, minimum extensibility, very good flexibility, high temperature and pressure resistance and strength stability with increasing temperature.

BRIEF DESCRIPTION OF THE DRAWINGS

The technical solution of the six-layer pipe with an inner layer of polybutylene for heating systems is explained in more detail in the figure.

The figure shows a six-layer pipe with an inner layer of polybutylene for heating systems and its individual layers.

SK 6693 Υ1

EXAMPLES

A six-layer pipe with an inner layer of polybutylene for heating systems (fig) consisting of an inner layer 1 made of highly flexible and thermally stabilized polybutylene, an adhesive layer 2 that serves to connect between the inner layer of polybutylene and another layer, The aluminum 3 forming the antioxidant barrier, the adhesive layer 4 between the aluminum layer and the next layer, the polyester fiber layer 5 and the outer layer of high-quality polyethylene 6, are connected to the heating system by screw connection.

Industrial usability

The six-layer polybutylene inner layer pipe for the heating systems according to the present invention can be used wherever there is a requirement for oxygen impermeability and to prevent the formation of iron oxide. It is particularly suitable for underfloor heating systems and radiator connections in municipal buildings, industrial production, individual family houses and apartment buildings.

PROTECTION REQUIREMENTS

Claims (1)

A six-layer pipe with a polybutylene inner layer for heating systems, characterized in that it consists of six layers, an inner layer (1) made of highly flexible and thermally stabilized polybutylene, an adhesive layer (2) interconnecting the inner layer (1) of polybutylene and another layer. , an aluminum layer (3) forming an oxygen barrier, an adhesive layer (4) between the aluminum layer (3) and the next layer, a polyester fiber layer (5) and an outer layer (6) of high quality polyethylene.