AU756741B2

AU756741B2 - Apparatus to aid in fixing dye to fabric

Info

Publication number: AU756741B2
Application number: AU38760/01A
Authority: AU
Inventors: Lewis Matich
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-05-19
Filing date: 2001-04-19
Publication date: 2003-01-23
Anticipated expiration: 2021-04-19
Also published as: AU3876001A

Description

S&FRef: 553195

AUSTRALIA

PATENTS ACT 1990 COMPLETE SPECIFICATION FOR A STANDARD PATENT

ORIGINAL

b.

Name and Address of Applicant: Actual Inventor(s): Address for Service: Lowignr Chic Pty Ltd 7A-46 Mileham Street Windsor New South Wales 2756 Australia Lewis Matich Spruson Ferguson St Martins Tower,Level 31 Market Street Sydney NSW 2000 Apparatus to Aid in Fixing Dye to Fabric Invention Title: ASSOCIATED PROVISIONAL APPLICATION DETAILS [33] Country [31] Applic. No(s) AU PQ7615 [32] Application Date 19 May 2000 The following statement is a full description of this invention, including the best method of performing it known to me/us:- 5815c APPARATUS TO AID IN FIXING DYE TO FABRIC Technical Field The present invention relates to printing machines and in particular to an apparatus having a fabric drive and continuous steaming unit to aid in fixing dye to a fabric.

Background of the Invention It is well known for printing establishments to have and operate ink jet machines that are capable of printing designs and/or patterns onto various compositions, such as, fabrics. In industrial applications these machines are required to print designs onto fabrics having a width from 200 millimetres to over 2 metres and therefore require large and sophisticated machinery.

dri When printing with such a technologically advanced machine problems arise in •drying the dye too quickly, drying the fabric too slowly and/or fixing the dye to the fabric.

To this end, a fabric drive system and steaming unit has been built to control the fabric fed into the ink jet machine for printing then control the fixation of said print to the fabric.

Accordingly, there is a need for a fabric drive and steaming unit for cooperation with a printing machine which fixes the dye to the fabric continuously and consistently to allow for a reliable fixation.

Object of the Invention It is an object of the present invention to overcome or ameliorate some of the disadvantages of the prior art, or at least to provide a useful alternative.

Summary of the Invention There is firstly disclosed herein an apparatus to aid in fixing dye to fabric; said apparatus including: a housing having a portion to receive and support a digital printer to apply dye to the fabric as the fabric passes a predetermined location; a first set of rollers to provide for movement of the fabric through said housing so as to pass said location; [R:\LHLL09448.doc:KEH:CAA:KEH 2 a steamer within said housing and through which the fabric passes after said location, the steamer being adapted to aid in fixing the dye to the fabric; said steamer including: an enclosure member providing a space through which the fabric passes; means to deliver steam to said space; water removal means to remove condensation from said space; wherein said member is shaped to drain condensation collected on said member to said water removal means; wherein said apparatus further includes: a second set of rollers to provide for the passage of the fabric from said predetermined location to said steamer.

Preferably, said apparatus is able to be interconnected between a dispensing and S• return spool each adapted for receipt of a roll of fabric.

••Preferably, said first and second set of rollers define a fabric run within said SIs housing.

S.Preferably, said first set of rollers include locating means for presenting said fabric into said digital printer at a predetermined orientation.

Preferably, said steamer is Bell shaped but not limited to this shape.

S-Preferably, said steamer includes a base having water traps for receipt of said condensation.

Preferably, said steam delivery means is a steam generator.

Preferably, upon operation of said generator the temperature within said steamer increases, the moisture content of said fabric increases and any excess condensed water is retained by said water traps to be reused in conversion back into steam.

There is further disclosed herein a method of fixing dye to fabric, said method including: attaching a digital printer to an apparatus for fixing dye to fabric; said apparatus including: a housing having a portion to receive and support a digital printer to apply dye to the fabric as the fabric passes a predetermined location; a first set of rollers to provide for movement of the fabric through said housing so as to pass said location; a steamer within said housing and through which the fabric passes after said location, the steamer being adapted to aid in fixing the dye to the fabric; [R:\LBLL09448.doc:KEH:CAA:KEH said steamer including: an enclosure member providing a space through which the fabric passes; means to deliver steam to said space; water removal means to remove condensation from said space; wherein said member is shaped to drain condensation collected on said member to said water removal means; wherein said apparatus further includes: a second set of rollers to provide for the passage of the fabric from said predetermined location to said steamer; to connecting said apparatus and digital printer between a dispensing spool and a return spool; connecting a roll of fabric between said dispensing and return spool and a plurality of guide rollers defining a fabric run therebetween; placing said fabric under tension by running said fabric through a 15 predetermined location within said digital printer; .o •o disposing a layer of dye on said fabric in a preselected design or pattern at said predetermined location; air drying said layer of dye and fabric for a predetermined length of o• time; 0. 20 passing said layer of dye and fabric through a steamer unit; steaming said layer of dye and fabric whilst passing through said steamer unit to fix said dye to said fabric; and retrieving said fixed layer of dye and fabric in a roll located at said return spool.

Preferably, the present invention allows fixation and printing of digital printed fabrics in one continuous operation.

Brief Description of the Drawings A preferred form of the present invention will now be described, by way of example only, with reference to the accompanying drawings wherein: Figure 1 is a schematic partial sectional view of an apparatus to aid in fixing dye to fabric according to an embodiment of the present invention; Figure 2 is a schematic partial sectional view of an apparatus to aid in fixing dye to fabric according to an embodiment of the present invention; and [RA\LIBLL09448.do:KEH:CAA:KEH 4 Figure 3 is a plan view of the apparatus as shown in Figure 2.

Detailed Description of the Preferred Embodiments In Figures 1 to 3 of the accompanying drawings, there is schematically depicted an apparatus 10 to aid in fixing dye to fabric. The apparatus 10 includes a housing having a portion 20 to receive and support an ink jet printer 25. The apparatus 10 further includes a dispensing assembly 30 and assembly spool 35 for receipt of a roll of fabric The apparatus 10 may also include a joining mechanism 21 to allow two rolls of fabric to be easily joined. The joining mechanism 21 includes a pin rail 22 which allows two lengths of fabric to be easily held together straight and tight for joining.

The housing 15 includes scroll roll 45 located on the in feed side of the printer and adapted to provide a spreading of the fabric 40 feeding into the printer 25 so that the fabric 40 is flat with no buckles or folds.

•.The ink jet printer 25 applies ink, dye or other printing mediums to the fabric in a preselected design or pattern by digital means. It will be appreciated by those skilled Is in the art that a variety of printers may be used for this application.

The housing 15 further includes a steamer 55 in the form of a bell shaped enclosure 55 located within the housing 15 and through which the fabric 40 passes. The bell shaped enclosure 55 is shaped such that condensation may drain down its internal surfaces 60 into one or more water traps 65 located at the base of the enclosure 55. These water traps 65 can be removable so as to empty water build up. It will be appreciated, however, that they may also be integrally formed with the enclosure 55, including •drainage ports or any other means to collect and then remove or recycle water build-up.

Inside the enclosure 55 is a plurality of rollers 70 around which the fabric 40 passes. A steam generator 75 is located in close proximity to the enclosure 55 and supplis steam into the enclosure 55 thereby increasing the moisture content of the fabric 40, additional super heated steam may be utilised for fixation of synthetic fibres. A steam reheater 76 may also be provided. The steam condenses on the internal surfaces 60 of the enclosure and flows towards water traps 65 thereby eliminating condensation drops on the fabric The unique design of the steamer utilises a suspended inner skin within a second skin, the second skin may be insulated 57 before being encased in a third outer skin 58.

The innermost skin has minimal contact with the second skin allowing the inner skin to rapidly achieve and maintain an equal temperature with the steam, thus eliminating RAcondensate formation. However, it has been noted that if the inner skin was removed the -~condensate formation. However, it has been noted that if the inner skin was removed the [R:\LIBLL]09448.doc:KEH:CAA: KEH steamer would still function. The design of the inner suspended skin combined with the second skin is such that excess steam is directed up in between the two skins for recycling thus preventing the steam escaping from the chamber during fixation. The enclosure can include suitable insulating material to retain heat within the enclosure 55 whilst not affecting other componentry of the apparatus 10. This steaming of the fabric 40 aids in fixing the dye to the fabric The dispensing assembly 30 includes two elongate rollers located parallel and slightly apart to allow a roll of fabric 40 to be positioned therebetween. Upon rotation of the rollers about their longitudinal axis the fabric roll 40 dispenses a length of fabric lo away from the dispensing assembly 30. The dispensing assembly 30 is of such size that the easy loading and unloading of any size roll of fabric 40 is provided for. The end of the assembly 30 can include a set of electronic senses 23 that determine the location of *the edge of the roll of fabric 40 and adjust the feed rollers 30 side to side so as to maintain the edge of the fabric 40 consistently in the same position irrespective of the way the Is fabric 40 has been placed or rolled.

The dispensing assembly 30 in a further embodiment may be integrally formed with the housing 15. The length of fabric departing the dispensing assembly 30 is in communication with a plurality of rollers 85 which apply a precise tension to the fabric oe entering the printer 25. Likewise a similar set of rollers 87 exists on the exit side of the °oo• printer 25 applying a precise tension to the fabric 40 as it leaves the printer 25 irrespective of the weight of the fabric 40 and irrespective of the size of the roll.

9 As described, the apparatus 10 is attached to a printer 25 and connected between the dispensing assembly 30 and return spool 35 connecting a roll of fabric 40 between the assembly/spool 30, 35 over a plurality of guide rollers 70, 85, 87, 90 defining a fabric run therebetween. The dispensing assembly 30 and return spool 35 are then rotated about their longitudinal axis by motor means (not shown). It will be appreciated by those skilled in the art that the motor means may be in any form. The fabric 40 is then run through the scroll roller 45 to ensure the fabric is presented to the printer 25 spread out perfectly flat, thereby preventing ripples forming in the fabric 40 under the printer head (not shown). Once inside the printer 25 the fabric 40 is run passed the predetermined location 50 of the printer 25 such that a layer of dye is deposited on at least one surface of the fabric 40 in a preselected design or pattern. On exiting the printer 25 the fabric 40 is g guided along the series of rollers 87 and 90 thereby tensioning as well as airing the fabric so as to partially dry the dye in the fabric 40. The distance from the printer 25 to [R:\LIBLL]09448.doc:KEH:CAA:KEH 6 steamer 55 is such that the dyes dry on the surface of the fabric 40 but retains the water from the dye absorbed by the fabric 40. This allows the fabric 40 to enter the steamer with a higher moisture content than fully dried fabric which accelerates the fixation of the dyes. The fabric 40 is then passed through the steamer 55 by running the fabric 40 along s the plurality of rollers 70, 90 within the steaming enclosure 55. The fabric 40 has a dwell time within the steamer 55 of 20 to 40 minutes. This ensures fixation of the dye into the fabric 40, which is achieved by raising the temperature of the fabric 40 in a very humid environment. The resultant temperature results in the fabric 40 drying very quickly upon exiting the steamer 55 thereby allowing the fabric 40 to be re-rolled dry on the return 1o spool 3 5 Although the invention has been described with references to specific examples, it would be appreciated by those skilled in the art that the invention may be embodied in many other forms.

*e* *o [R:\LILL]09448.doc:KEH:CAA:KEH

Claims

1. An apparatus to aid in fixing dye to fabric; said apparatus including: a housing having a portion to receive and support a digital printer to apply dye to the fabric as the fabric passes a predetermined location; a first set of rollers to provide for movement of the fabric through said housing so as to pass said location; a steamer within said housing and through which the fabric passes after said location, the steamer being adapted to aid in fixing the dye to the fabric and including; an enclosure member providing a space through which the fabric passes; means to deliver steam to said space; water removal means to remove condensation from said space and wherein said member is shaped to drain condensation collected on said member to said water removal means; and wherein said apparatus further includes: a second set of rollers to provide for the passage of the fabric from said s15 predetermined location to said steamer. 9 •9

2. The apparatus according to claim 1, wherein said apparatus is able to be interconnected between a dispensing and return spool, each adapted for receipt of a roll of fabric. 9 9o

3. The apparatus according to claim 1 or claim 2, wherein said first and •20 second set of rollers define a fabric run within said housing.

4. The apparatus according to any one of claims 1 to 3, wherein said first set of rollers include locating means for presenting said fabric into said digital printer at a predetermined orientation. The apparatus according to any one of claims 1 to 4, wherein said steamer is bell shaped.

6. The apparatus according to any one of claims 1 to 5, wherein said steamer includes a base having water traps for receipt of said condensation.

7. The apparatus according to any one of claims 1 to 6, wherein said steam delivery means is a steam generator. [RA\LIBLL009448.doc:KEH:CAA:KEH 8

8. The apparatus according to claim 7, whereby upon operation of said generator the temperature within said steamer increases, the moisture content of said fabric increases and any excess condensed water is retained by said water traps to be reused in conversion back into steam.

9. A method of fixing dye to fabric, said method including: attaching a digital printer to an apparatus for fixing dye to fabric; said apparatus including: a housing having a portion to receive and support a digital printer to apply dye to the fabric as the fabric passes a predetermined location; 0o a first set of rollers to provide for movement of the fabric through said housing so as to pass said location; a steamer within said housing and through which the fabric passes after said ooo :location, the steamer being adapted to aid in fixing the dye to the fabric and including: an enclosure member providing a space through which the fabric passes; means to deliver S 15 steam to said space; water removal means to remove condensation from said space and wherein said member is shaped to drain condensation collected on said member to said 00 water removal means; and wherein said apparatus further includes: a second set of rollers to provide for the passage of the fabric from said oo00 •20 predetermined location to said steamer; connecting said apparatus and digital printer between a dispensing spool o and a return spool; connecting a roll of fabric between said dispensing and return spool and a plurality of guide rollers defining a fabric run therebetween; placing said fabric under tension by running said fabric through a predetermined location within said digital printer; disposing a layer of dye on said fabric in a preselected design or pattern at said predetermined location; air drying said layer of dye and fabric for a predetermined length of time; passing said layer of dye and fabric through a steamer unit; \RA steaming said layer of dye and fabric whilst passing through said steamer unit to fix said dye to said fabric; and [R:\LBLL]09448.do:KEH:CAA:KEH retrieving said fixed layer of dye and fabric in a roll located at said return spool.

11. An apparatus to aid in fixing dye to fabric, substantially as hereinbefore described with reference to the accompanying drawings.

12. A method of fixing dye to fabric, substantially as hereinbefore described with reference to the accompanying drawings. Dated 8 October, 2002 Lewis Matich Patent Attorneys for the Applicant/Nominated Person SPRUSON FERGUSON 0 0 [R:\LIBLL]09448.doc:KEH:CAA:KEH