US3448470A - Jig dyeing - Google Patents

Description

C. NENTON JIG DYEING June 10, i969 mvENToR; CLIFFORD NEWTON *paul/IAM PM ATTORNEYS June l0, 1969 c. NEWTON 3,448,470

JIG DYEING Filed May 29, 1957 sheet 2 of 2 INVENTOR:

CLIFFORD NEWTON BY PLM/m1, #Pm

ATTORNEYS 'United States Patent O 3,448,470 JIG DYEING Clifford Newton, Stockport, England, assignor to F. Smith & Co. (Whitworth) Limited, Whitworth, Rochdale, England Filed May 29, 1967, Ser. No. 642,088 Int. Cl. D06c 1/00; D06f 35/00 U.S. Cl. 8-151 12 'Claims ABSTRACT OF THE DISCLOSURE The invention concerns the dyeing of textile materials.

In the dyeing of textile materials it is import-ant that the temperature of the material under processing be maintained at a predetermined level thus to avoid dyeing faults, but difficulty is frequently experienced in this regard. For example, if Va textile material under processing is wound onto a cold roller, the temperature of the material immediately Afalls thus to give rise subsequently to a dyeing fault in the fabric, it being -appreciated that the iixation of some conventional dyestuffs, for example, re- -active dyestutf is very sensitive to temperature variations. A similar effect obtains in the selvedge regions of -a fabric where such regions are lfrequently of a lighter shade than the body of the fabric due to cooling of the sides of the fabric whilst on the roller.

It is the primary object of the present invention to provide a method of and a means for avoiding or reducing the occurrence of the abovementioned diiiiculty.

Thus, according to the presen-t invention, in lthe dyeing of textile materials in -a dye jig we -apply heat to those regions of the material wound on a support roller which are subject to heat losses so as to maintain the temperature of the material sensibly constant lthroughout both its wid-th and length.

The invention also includes apparatus for practicing the method aforesaid vand having a heater means whereby the part of the fabric on a roller subject to heat loss is heated thereby to maintain the temperature thereof at -a substantially constant level. Usually the heater means will be such as to raise the temperature of the roll upon which the -fabric is wound and also Ito provide a source of heat in closely adjacent disposition relative to the cloth selvedge.

The heater means, as applied to the roller itself, feeds heating fluid to the interior of the roller, whilst the selvedge region of the wound fabric which is normally subjected to heat losses is maintained at a required temperature by heated plates disposed adjacent the said regions, or by spraying the heated dye liquor onto the selvedges.

The invention will now be described further, by way of example only with reference -to the accompanying drawings illustrating three embodiments thereof and in which:

FIG. l shows, diagrammatically, a -roller arrangement constructed in accordance with the invention;

FIG. 2 is a vertical section taken through a closed dye jig constructed according to the invention;

FIG. 3 is a section on line III- III of FIG. 2;

FIG. 4 is a side elevation of an alternative structure; and

FIG. 5 is a section on line V-V of FIG. 4.

Referring now to the drawings and in particular to FIG. 1 thereof, the rollers 11 of a dye jig are each arranged to receive a heating medium thereby to maintain the roller surface at or about a predetermined temperature level. The heating medium, in the form of a fluid, is taken from and returned to a heating circuit v12, the said circuit including avheat-exchange 12a and a pump 12b whereby the medium is circulated.

Each roller ,11 has a hollow spindle 11a at one end thereof, the bore 11a of the said spindle defining a passageway through which the heating medium return conduit 12C passes, the heating medium inlet 12d being constituted by the annular space between the return conduit 12e and the bore 11a'.

In operation, a heating medium is continuously -applied to the interior of the rollers 11 through the respective hollow spindle 11a and is taken therefrom by the return conduits 12e, the latter having an end portion extending radially outwardly of the roller and terminating closely adjacent the inner wall thereof.

In an alternative arrangement, see now FIGS. 2 and 3, -a closed dye jig 20 is provided with a means 21 whereby the selvedges of the material on the rollers is continuously sprayed with dye liquor taken from the jig and, therefore, at the same temperature thereas. The `means for applying dye liquor comprises a closed circuit system formed by the jig bath 21a, feed conduits 2lb extending one on either side of the jig 20 Iand passing from the bottom of the jig to a position above the rollers 22, the said conduits 2lb each terminating in a horizontally disposed spray member 21C having perfor-ations 21d in that side thereof facing the roller.

In use, dye liquor is caused to flow from the dye bath 21a through the fed conduits 2lb to be sprayed onto the selvedge 23a of the material 23 wound on the roller 22. From the material, excess liquor falls into the dye bath to be recirculated in due course. A heating medium will be caused to pass through the rollers, and the arrangement of FIG. l could be utilized for this purpose.

As an alternative to applying heat to the selvedge region by spraying dye liquor taken from the dye bath onto such regions, a hollow cheek piece 40 may be provided at each side of the jig in the manner shown in FIGS. 4 and 5, the pieces being positioned at the level of the rollers 41 and having openings 40a therein to receive the ends of the said rollers 41 so as to allow the adjustment of each cheek piece axially of the roller to a position closely adjacent the respective selvedge 42a of a fabric 42, irrespective of the width of the fabric under processing. Inlet and outlet openings 40b, 40a` respectively are provided in the underside of each cheek piece 40, and a heating medium is applied to the said pieces in any convenient manner, for example by a pump 24.

It will readily be appreciated that, by utilising the arrangements as above described, it will be possible to maintain at a requisite level the temperature of the fabric on a roller, the optimum advantage being obtained when both the body of the fabric (from the roller) and the selvedges (from the cheeks or sprays) are heated.

The invention is not restricted to the particular features of the embodiment hereinbefore described since alternatives will readily present themselves to one skilled in the art. Thus, for example, the nature of the heating medium may be selected to suit particular requirements. Although in the embodiment shown in FIGS. 4 and 5 a single cheek piece is provided at each side of the rollers and extends so as to cover the selvedge of fabric wound on each of the two spaced rollers, individual cheek pieces could be provided for each roller and, subject to the provision of a suitable rotating seal, each individual cheek piece could rotate with its respective roller.

What we claim is:

i1. A method of dyeing textile materials in a dye jig which includes the step of applying heat to the selvedge regions of a material wound on a support roller, which regions are normally subjected to heat losses, so as to maintain the temperature of the material sensibly constant in the region of such potential heat loss.

2. 'Ihe method as claimed in claim 1 wherein said heat applying step includes the step of applying a heated uid to the selvedge regions of the wound material, the temperature of the -uid being substantially equal to that of the material.

3. The method as claimed in claim 2 wherein the heated dluid is taken from the dye bath.

4. The method as claimed in claim 2 wherein the uid is sprayed onto the said selvedge regions.

5. Textile dyeing apparatus including a heated roller upon which the material being dyed is wound, and a heater means disposed radially outwardly of the roller and adapted to maintain substantially constant the temperature in the selvedge regions of the material wound on such roller.

6. Textile dyeing apparatus as claimed in claim 5 wherein the heated roller is hollow, said roller is adapted to receive a heating uid and said apparatus includes a separate heat source for said heating lluid.

7. Textile dyeing apparatus as claimed in claim 5 wherein the said heater means comprises one or more cheek pieces disposed adjacent the said selvedge regions.

8. Textile dyeing apparatus as claimed in claim 7 wherein the said cheek pieces are elongated and are adapted and arranged to apply heat to material wound on spaced parallel rollers.

9. Textile dyeing apparatus as claimed in claim 7 wherein the said cheek piecesfare'hollow and have inlet and outlet opening for the heating medium. l

10. Textile dyeing apparatus asclaimed fin' claim 5 wherein the said heater means comprises a spraytube through which a heating medium is applicable to the'selvedge regions. f $11. Textile `dyeing apparatus as vclaimed -in 'claim 5 wherein the heater means is adjustable longitudinally of the rollers. v t t" 12. Textile dyeing apparatusvof the type in which' a web 'of fabric's wound from one roll to another roll 'While a stretch is festooned in a dye bath, said apparatus comprising: f l f f heater`means,rins ide of said rolls for heatingthvpfahric wound thereon from vinside the conyolu'tionsftheireof at a predetermined'v temperature, and l v l heater means, outside of said Tolls, for heating "the sel 'vedge portions of the'fabric wound thereon, :"fro'm outside the yconvolutions thereof, to'`rIain'tai'rrthe 20 I same at a constant predetermined temperatu 1je'.k 1

References vCited A UNITEDsTATEs PATENTS 25 263,540 8/1882 Landry v ',l00-93 1,167,036 l/19l'6 Witham et al. xe l00+-93 i lFOREIGN PATENTS 'l 377,770 7/17964 Switzerland.

30 WILLIAM I. P11-TOE, Primary Examffie'r.

1 Us. c1. xn'. 68-*180

Images