Method for preparing a tension member, in particular a carbon tension member, in the production of a belt

Patent metadata

Field	Value
Publication number	US-10442147-B2
Application number	US-201414268231-A
Country	US
Kind code	B2
Filing date	May 2, 2014
Priority date	Nov 2, 2011
Publication date	Oct 15, 2019
Grant date	Oct 15, 2019

Abstract

A method for treating a tension member in the production of a belt. The belt includes at least a belt body made of a polymer material having elastic properties, a cover layer as a belt backing, and a substructure having a force-transmission zone. The tension member has a ribbed design and is embedded in the belt body. The tension member is treated with an overall treatment mixture which forms a cross-linked polymer that on the one hand enters into a mechanical connection with the tension member and on the other hand forms an adhesive connection with the belt body.

First claim

What is claimed is:

1. A method of treating a tensile member for fabricating a belt comprising:
wetting a tensile member having voids and being in cord construction with an overall treatment mixture including at least a prepolymer, a crosslinker, and at least one of an inert solvent or dispersant in a single treatment stage, thereby filling at least some of the tensile member voids with the overall treatment mixture to form a treated tensile member;
drying the treated tensile member to form a dried tensile member; and,
embedding the dried tensile member in a belt body composed of a polymeric material having elastic properties;
the belt body having a top ply as belt backing and a substructure having a power transmission zone; and,
the overall treatment mixture forming a crosslinked polymer having both a mechanical attachment to the tensile member and an adherent bond with the belt body,
wherein a partial crosslinking reaction occurs while the overall treatment mixture is penetrating into the tensile member voids;
wherein before the treatment of the tensile member is started, the individual components of the overall treatment mixture are initially dissolved and/or dispersed independently of each other in a solvent or dispersant, respectively, which may be the same or different, and are then combined at the start of the treatment of the tensile member to form a still low-viscosity overall treatment mixture.

2. The method as claimed in claim 1 , wherein the tensile member is wetted such that, after drying, the crosslinked polymer fills at least 20% of the tensile member voids.

3. The method as claimed in claim 1 , wherein a diol is used to crosslink the prepolymer.

4. The method as claimed in claim 3 , wherein a butanediol is used to crosslink the prepolymer.

5. The method as claimed in claim 1 , wherein a polyurethane prepolymer is employed.

6. The method as claimed in claim 1 , wherein the tensile member comprises a fibrous material.

7. The method as claimed in claim 6 , wherein the fibrous material is selected from the group consisting of carbon fibers, glass fibers, aramid fibers, and basalt fibers or a mixture thereof.

8. The method as claimed in claim 7 , wherein the fibrous material consists of carbon fibers.

Assignees

• Contitech Antriebssysteme Gmbh

Inventors

• Brocke Stephan
• Goeser Hubert
• Kucharczyk Andre

Classifications

• F16G5/08

  with textile reinforcement · CPC title

• F16G1/10

  with textile reinforcement · CPC title

• B29B15/122

  with a matrix in liquid form, e.g. as melt, solution or latex · CPC title

• D06M15/564

  Polyureas, polyurethanes or other polymers having ureide or urethane links; Precondensation products forming them · CPC title

• F16G5/20

  with a contact surface of special shape, e.g. toothed · CPC title