DE8025492U1 - DRIVE OR CONVEYOR - Google Patents

Description

Hi H Ii Il I

It « i i 4 I III

t t t t it I III

ι <ι <ι t < ι ι ι ι ι ι ti

i i ti I I <>

ill «i ii Ii (·

MElRTENS &

Patent attorneys:

6000 Frankfurt / Mayη

company
PETER-BTR
Gummiwerke AG

6450 Hanau 8

HB P 32 K / Pn

"Drive or conveyor belt"

The invention relates to a drive or conveyor belt which is made up of individual partial lengths, e.g. by connecting hooks, can be assembled, the partial lengths at least one with weft threads made of polyamide and warp threads made of polyester has formed, optionally a multi-layer fabric weave exhibiting fabric insert, which is preferably pretreated in this way is that it can be treated essentially free of longitudinal tension during the gumming and then without post-stretching is vulcanizable.

Such a drive or conveyor belt is from DE-AS 22 34 915 known.

For the use of such drive or conveyor belts in underground construction, they have to pass a filter self-rescue test Sufficient main body for the mine rescue service, which assumes that when the conveyor belt material is smoldering given size the amount of the volume resistance

Kt ti H

t I <1) < <i III

I 4 «I t

111 · <i <Il

MERTENSÄ KEIL

PATENT LAWYERS

a test filter impairing visual products Do not exceed the specified dimension * It is known that with drive or conveyor belts of the generic type in particular the polyester content of the reinforcing fabric insert, the suitability with regard to the smoldering behavior is essential co-determined, i.e. the higher the polyester content of the fabric, the less the conveyor belt material can do the prescribed Pass the filter test. On the other hand, for higher strength types of drive or conveyor belts, a stronger one Fabric insert required. For the high strength and low elongation of drive or conveyor belts are in particular determining the polyester threads running in the direction of the warp. When made by increasing the number of warp threads The aim of increasing the strength and low elongation of drive or conveyor belts is polyester With regard to the existing filter self-rescuer test regarding the smoldering behavior, very soon to the given limits. The polyamide threads, which are more favorable in terms of the smoldering behavior, are due to their unfavorable elongation behavior in the In contrast to the low elongation of the polyester threads in the generic drive or conveyor belts so far only used as weft threads. A replacement of warp threads made of polyester with warp threads made of polyamide to increase strength Due to the unfavorable elongation behavior of the polyamide threads, it could not be used in a low-elongation environment Lead drive or conveyor belt of higher strength.

The object of the present invention is to develop a drive or conveyor belt of the generic type so that that it is also suitable for use in underground mining despite its higher strength and low elongation.

According to the invention, this object is achieved in that the warp thread made of polyester is wholly or partly made of polyamide

Ill ί

III I

(Il I

I I I I I I

I I I

lit «I I

It «<

ι It t

Il «I

MERTENS & KEIL

PATENT LAWYERS

Are surrounded or the warp thread made of polyester in the warp direction running polyamide threads are arranged ..

The invention is based on the surprising finding j that with a generic drive or conveyor belt the number of warp threads made of polyester to increase the Strength with high Dehnuhgsarmut, without the suitability for use in underground construction with regard to the to existing filter self-rescuer test can be increased if some or all of the in Allocates a sufficient amount of polyamide to polyester threads running in the direction of the warp in the immediate vicinity, either in that the warp threads made of polyester are completely or partially surrounded by polyamide or in that the warp threads made of polyester are assigned polyamide threads running essentially in the warp direction. Apparently affect the decomposition of the polyester and the immediately adjacent polyamide during the smoldering process in such a way Way that the amount of resulting harmful respiratory filters Smoldering products is reduced. The idea of the invention can therefore find application where either by increased number of polyester threads running in the warp direction nevertheless achieve a passing of the filter self-rescue test or with the same number of polyester threads and thus the same strength of one of the filter self-rescuer test Sufficient belt wants to lower the amount of carbonization products produced even further.

It has been shown that it is advantageous to use some or all of the polyester warp threads in the weave repeat at least one warp thread made of polyester twisted together with at least one polyamide thread, preferably several Warp thread made of polyester with one polyamide thread each.

MERTElNS & KEIL

f = * ATEl N TA N WALTE

But you can also use some or all of the warp threads ! Polyester in the weave repeat at least one warp thread Twist around polyester with at least one polyamide thread, preferably several warp threads made of poly- ^ ester with at least one polyamide thread.

By the number of each twisted with a polyamide thread or twisted and / or polyamide-coated polyester warp threads, the ratio of polyester content to Polyamide content of the threads running in the warp direction can be set to a most favorable value.

A comparison of a conventional belt with one according to the invention Belt with the same strength of 1250 N / mm belt width in the filter self-rescuer test resulted, for example, in the conventional belt an increase in inhalation resistance in a constant air flow of 94 l / min of more than 14 mbar and in the case of the belt according to the invention an increase in inhalation resistance in a constant air flow of 94 l / min of only 1.7 mbar. The inventive measure of assigning polyamide to those running in the warp direction Polyester threads could thus be seen from a belt that was unsuitable for the filter self-rescue test in this respect suitable belt of the same strength can be created.

The single figure shows a schematic section in the Kettrichtüng running thread made of polyester threads and a polyamide thread (hatched) according to the invention.

Claims (5)

I t I? »· ■ <! ■ t | ll ti * I ?! t I)) IS I | t «ail t:? * MERTENS & KEIL PATENTANWÄLTE 6000 Frankfurt / Main 23.9.1980 H 8 P K / Pn Company PETER-BTR Gummiwerke AG 6450 Hanau 8 "Drive or conveyor belt" -t- -rt-t n claims 1. Drive or conveyor belt, which can be put together from individual partial lengths, e.g. by connecting hooks, whereby the partial lengths at least one formed with weft threads made of polyamide and warp threads made of polyester, possibly one has a multi-layer woven fabric insert which is preferably pretreated in such a way that that they can be treated essentially free of longitudinal tension during the rubber coating and then vulcanizable without post-stretching is, characterized in that the warp thread made of polyester is completely or partially surrounded by polyamide or warp threads made of polyester are assigned to polyamide threads running in the warp direction. Il I I I I lit Il Il ■ · · · II. I I I I · · · ■ lit I »I I BBB B 1 ii) || I 111 ·· ■■ » ) I Il IBIBB 111 11 Il ■■ ■ · _ 2 - MERTENS & KEIL PATENT LAWYERS 2. Drive or conveyor belt according to claim 1, characterized in that some or all of the warp threads Polyester at least one warp thread made of polyester is twisted together with at least one polyamide thread, 3. Drive or conveyor belt according to claim 2, characterized in that some or all of the warp threads Polyester several warp threads made of polyester are twisted together with a polyamide thread. 4. drive or conveyor belt according to claim 1, characterized characterized in that of some or all of the polyester warp threads at least one polyester warp thread is twisted by at least one polyamide thread. 5. drive or conveyor belt according to claim 4, characterized characterized in that of some or all of the polyester warp threads in each case several polyester warp threads of are twisted around at least one polyamide thread. • I ft I I I I I I I Il Il t I t r I »I I I I f I I I I ItIIIIII ( I Il I I I I I I I I I I I I ! «III Il Il I · Il IfIIIII I Il III «