2
APPARATUS FOR APPLYING TEXTILE AUXILIARY SUBSTANCES ON YARN V. I. Shlyakhov~ A. I. Savelov, UDC 67~.494.002.56:677.O21.12 and N. Vo Kulagin Laboratory tests are an important factor in the development of new textile auxi- liary substances (TAS) for synthetic fibres. The usefulness of information obtained in the laboratory about the properties of the substance depends on the precision and repro- ducibility of the method whereby the preparation is deposited on the yarn. The American concern ~Precision Machines' produces a finish applicator with which the substance concerned can be applied to the yarn with a high degree of precision in laboratory conditions for the purpose of determinin~ the functional and electrophysical properties of the substance. The present writers have developed apparatus for this pur- pose which can be easily constructed in any research laboratory. The apparatus is shown in schematic presentation in Fig.1. It consists of a winder unit A and a proportioner B. The latter consists of a DSD-2P-1 electric motor 1 with reducing gear~ a change pulley 2~ a weighted cord 3. a medical syringe 4~ and a capil- ary tube 5. The winder unit is taken from the ~Polikon ~ machine. When the motor is star- ted the weighted cord begins to unwind from the pulley. The weight is rigidly connected with the plunger of the syringe and in ~escending at constant speed expresses the pre- paration through the tube. The yarn passes through a guide and is wound on a bobbin 8 at constant speed. The rate at which the preparation is applied depends on the speed of the motor and the diameter of the syringe~ i.e. W~ 4 I 1 I I I t , I 1,1 i, Ji ', --I J I i/ I I Fi~.1. The apparatus for applying TAS on yarn. All-Union Scientific Research Institute for Synthetic Fibres. Translated from Khimicheskie Volokna, No.2, pp. 72 - ~3~ March - April, 19 ~. Original article submitted April 15, 1974. ©1976 Plenum Publishing Corporation, 227 West 17th Street, New York, N. Y. 10011. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, microfilming, recording or otherwise, without written permission of the publisher. A copy of this article is available from the publisher for $15.00. 225

Apparatus for applying textile auxiliary substances on yarn

Embed Size (px)

Citation preview

Page 1: Apparatus for applying textile auxiliary substances on yarn

APPARATUS FOR APPLYING TEXTILE AUXILIARY SUBSTANCES ON YARN

V. I. Shlyakhov~ A. I. Savelov, UDC 67~.494.002.56:677.O21.12

and N. Vo Kulagin

Laboratory tests are an important factor in the development of new textile auxi- liary substances (TAS) for synthetic fibres. The usefulness of information obtained in the laboratory about the properties of the substance depends on the precision and repro- ducibility of the method whereby the preparation is deposited on the yarn.

The American concern ~Precision Machines' produces a finish applicator with which the substance concerned can be applied to the yarn with a high degree of precision in laboratory conditions for the purpose of determinin~ the functional and electrophysical properties of the substance. The present writers have developed apparatus for this pur- pose which can be easily constructed in any research laboratory.

The apparatus is shown in schematic presentation in Fig.1. It consists of a winder unit A and a proportioner B. The latter consists of a DSD-2P-1 electric motor 1 with reducing gear~ a change pulley 2~ a weighted cord 3. a medical syringe 4~ and a capil- ary tube 5. The winder unit is taken from the ~Polikon ~ machine. When the motor is star- ted the weighted cord begins to unwind from the pulley. The weight is rigidly connected with the plunger of the syringe and in ~escending at constant speed expresses the pre- paration through the tube. The yarn passes through a guide and is wound on a bobbin 8 at constant speed. The rate at which the preparation is applied depends on the speed of the motor and the diameter of the syringe~ i.e.

W~ 4

I 1 I I I t

, I

1,1 i, Ji ', - - I J I i / I I

Fi~.1. The apparatus for applying TAS on yarn.

All-Union Scientific Research Institute for Synthetic Fibres. Translated from Khimicheskie Volokna, No.2, pp. 72 - ~3~ March - April, 19 ~. Original article submitted April 15, 1974.

©1976 Plenum Publishing Corporation, 227 West 17th Street, New York, N. Y. 10011. No part o f this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, microfilming, recording or otherwise, without written permission o f the publisher. A copy o f this article is available from the publisher for $15.00.

225

Page 2: Apparatus for applying textile auxiliary substances on yarn

TABLE I

Samp~ No.

Percent preparation on yam when applied . . . .

. from a ~/o from a ;r/o emutsiot~ ema]at(m

I 2 3 4 5 6 7 8

Mean measured ealeulated

0.30 0,29 0,30 0,31 0,29 0,28 0,30 0,31

0,2") 0,30

0,50 0,49 0,47 0,48 0,50 0,48 0,48 0,50

0,48 0,49

In the foregoing equation ~ is the flow rate of the preparation (cm3/min), D 1 is the diameter of the change pulley (cm), D 2 is the diameter of the second pulley (cm), and ~ is the motor speed (rpm).

The motor also drives the winder which pulls the yarn at constant speed through the applicator tube. The feed rate and concentration of the preparation are so arranged that the yarn absorbs the preparation completely.

The percent preparation on the yarn depends on the feed rate~ concentration and density of the emulsion and on the yarn speed and tex, i e.

B == --~T~c--. 10 ~

where B is the percent preparation on the yarn, T is the yarn rex, p is the density of the preparation (kg/m3), [ is its concentration (%), and X is the yarn speed (m/min).

The output shaft of the reducing gear rotates at I/4 rpm. The diameter of the change pulley is 2 cm, the weight suspended from the cord is 200 g, the inside diameter of the syringe is 0.7 cm, and the diameter of the capillary tube I mm.

In trial applications of a given amount of a preparation on 29.~ tex Capron yarn first washed in carbon tetrachloride the percent preparation on the yarn was determined by extraction with CCI h followed by the vaporization of an aliquot part of solvent. The preparation was applied in the form of 3% and 5% emulsions. In each experiment the pre- paration was applied to an 800 m long length of yarn from which eight 100 m long speci- mens were cut for the determination of the percent retained preparation. The results are set out in Table I.

The apparatus permits the precise application of an amount of the preparation slightly below that required for the complete impregnation of the yarn so that process of determining the deposited amount can be dispensed with and comparative investigations of the friction and electrophysical properties of yarns treated with various composi- tions can be conducted with a high degree of precision.

226