DD139634A1 - SELF-ADHESIVE CORROSION PROTECTION AT BITUMEN BASIS - Google Patents

Abstract

The self-adhesive corrosion protection bandage can be used for Corrosion protection of buried pipelines, tanks and steel components. It can be used to protect buildings against moisture, as well as for vibration and noise damping. It is still can be used for sealing joints, eg. at Industrial glazing. They are used for post-insulation free assembly seam zones of outer bituminized pipes. The The goal was the development of a self-adhesive Bitumen-based corrosion protection bandage, self-adhesive works well with high mechanical stability has thermal resistance. The proposed self-adhesive Korrosiönsschutzbinde has a loose set non-rotatable textile carrier fabric, preferably glass fiber blended fabric, the one-sided with a bitumen, rubber, flexibility-enhancing additives and fillers existing basic bitumen is coated. One side of the Basic bitumen layer is made with a glue from one Bitumen-rubber combination with viscosity-lowering oils or resins, the other side is from a PE foil covered, which is preferred for sunshine may be colored white, - Fig.1 -

Description

2007 30

Title of the invention

Self-adhesive bitumen-based corrosion protection bandage

Field of application of the invention

The self-adhesive, bitumen-based corrosion protection bandage can be used for the corrosion protection of buried pipelines, tanks and steel components. It can be used to protect buildings against moisture, for vibration and noise damping. It also finds application for sealing joints, z. For example, in industrial glazings. This self-adhesive anti-corrosion bandage is preferably used for ITachisoliereh the free Montahahtzonen bituminous pipelines ·

Characteristic of the known technical solutions. Bitumen-based corrosion protection bandages are known which, however, have no self-adhesive effect. For example, in DT-OS 1525599 Kl. 4-7 f 1 58/00 a corrosion protection bandage is described whose backing material is coated with a corrosion protection compound and covered with a film over it. The in DT-OS 234-34-88 KL. F 16 1 58/00 described bitumen or plastic corrosion protection bandage is surrounded with, an external impact and pressure resistant chemical fiber fleece. In DT-AS 1302738 Kl. F 16 1 59 / 14- a corrosion protection bandage is described, which attempts to act self-adhesive bitumen-based. But even with this bandage it is' necessary, as well as for applying the aforementioned bandages, to heat them. In the bandage described in DT-AS 1302738 Kl. F 16 59 / 14- the heating of the same up to about 130 ⁰ C is required to the superimposed plastic layer

₂ 20 & 730

to soften. The remnants of the plastic layer should be applied to the heated adhesive. The adhesive receives its adhesion only after performing these steps and cooling. A disadvantage of all bindings described so far is the required heating of the bituminous layer and the associated burden of fitters in isolation with these binders. Mostly the bandages are hot to apply or require a warming line. There are also corrosive protective tape η known, which act self-adhesive and are applied in a cold process, wherein, such as. B. in DT-OS 2324898 Cl. P 16 1 described 58/00, flexible elastic plastic film strip on both sides of a plastic coating with synthetic rubber contains · In DT-OS 2149239 is a covered with adhesive plastic tape for coating pipes for the purpose of corrosion protection described '.

Object of the invention.

It is a self-adhesive bitumen-based corrosion protection binder to develop, which acts as a self-adhesive and with high mechanical stability has a good thermal resistance.

Explanation of the essence of the invention

The known bitumen-based corrosion protection bandages are primarily not self-adhesive or require extensive preparatory work to achieve the adhesive effect. The adhesive tapes are preferably adhesive coated plastic tapes but not bitumen based. They are to be melted and thus cause additional operations and risk of accidents.

It is presented a self-adhesive bitumen-based corrosion protection bandage, which has a non-rotatable, roughly adjusted textile carrier material, preferably glass fiber blended fabric which is well soaked and coated on both sides with a base bitumen _o On this Grundbitumenschicht one side, an adhesive, also based on bitumen, applied.

3 200730

The other side is coated with a film, which is preferably colored white for solar radiation. "Another variant of the binding structure consists of coating the base bitumen-coated textile carrier fabric on both sides with film and applying the adhesive surface on one side to the film.

The base bitumen used to coat the support material preferably has a composition of

- Bitumen, preferably blown and / or distillate bitumen

Rubber, preferably oil-extended butadiene-styrene rubber or cryogenic caustic

- flexibility enhancing additives, preferably one

in the vacuum distillation of atmospheric petroleum residue resulting oil having a viscosity of 5-11 cSt at 100 ⁰ C and / or incurred in the extraction of petroleum residues resin and / or Paraffinkompounds and

- Fillers, preferably asbestos flour.

embodiment

The proposed bandage preferably contains, as a textile carrier material 1, a non-rotatable coarsely adjusted glass fiber blended fabric in order to achieve a good penetration of the carrier material with the base bitumen 2

 The basic bitumen was in a composition of

60% blown bitumen 8 % Buildical W extra

12 % vacuum distillate and

20 % asbestos flour 7 / 4-50 used.

The adhesive 3 to be applied on one side of the base bitumen layer in this example had a composition of 90 % Buildical W extra and 10 % vacuum distillate. The layer thickness of the applied adhesive 3 is 0.1-0.3 mm. A compound of the adhesive 3 with the basic bitumen 2 is achieved by the application method. The side of the bandage opposite the adhesive layer 3 is covered with a preferably 0.02 mm thick foil 4, which is white for the purpose of heat radiation.

20873

can be colored · '

To transport the bandage, the adhesive layer 3 is covered with a release material, preferably a siliconized release material, which is easy to remove during assembly of the bandages.

In order to enable wallpapering with this bandage in the assembly process, the adhesive 3 of the same composition in the dissolved state (solvent) can also be applied separately. This variant has the same parameters of adhesive strength and self-adhesive effect0. ,

The bandage is applied to the steel parts to be isolated after removal of the release material in several layers without further preparation. ·.

Claims (4)

730 claims Bitumen-based self-adhesive corrosion protection bandage for corrosion protection of buried conduits, containers and steel components, characterized in that preferably a non-rotatable, coarsely adjusted fiberglass blended fabric is impregnated and coated on both sides with a base bitumen (2) ) is coated with a bitumen-based adhesive (3), the other side of the bituminous layer (2) carrying a polyethylene foil (4) which is preferably colored white. 2. Self-adhesive corrosion protection bandage according to item 1, characterized in that the bitumen layer (2) is coated on both sides with a PE film (4) and on one side of the film (4) of the adhesive (3) is applied " 3 «Self-adhesive anti-corrosion bandage according to items 1 and 2,. characterized in that the base bitumen (2) is a composition of - Bitumen, preferably blown and / or distillation bitumen - Rubber, preferably oil-extended butadiene-styrene rubber or low-temperature rubber flexibility enhancing additives, preferably an oil obtained from the vacuum distillation of atmospheric petroleum residue having a viscosity of 5-11 cSt at 100 ^° C. and / or a resin and / or paraffin compounds obtained in the extraction of petroleum residues; - has fillers, preferably asbestos flour « 4. Self-adhesive corrosion protection bandage according to item 1 and 2, characterized in that the adhesive (3) consists of a bitumen-rubber combination and viscosity-reducing oils and / or Harzeη.