GB2245220A - Multi-layered transfer sheet - Google Patents

Multi-layered transfer sheet Download PDF

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Publication number
GB2245220A
GB2245220A GB9013936A GB9013936A GB2245220A GB 2245220 A GB2245220 A GB 2245220A GB 9013936 A GB9013936 A GB 9013936A GB 9013936 A GB9013936 A GB 9013936A GB 2245220 A GB2245220 A GB 2245220A
Authority
GB
United Kingdom
Prior art keywords
transfer sheet
adhesive
sheet
design
granules
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB9013936A
Other versions
GB9013936D0 (en
GB2245220B (en
Inventor
Christopher Kay
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Electroscope Ltd
Original Assignee
Electroscope Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Electroscope Ltd filed Critical Electroscope Ltd
Priority to GB9013936A priority Critical patent/GB2245220B/en
Priority to BE9000698A priority patent/BE1002243A7/en
Publication of GB9013936D0 publication Critical patent/GB9013936D0/en
Publication of GB2245220A publication Critical patent/GB2245220A/en
Application granted granted Critical
Publication of GB2245220B publication Critical patent/GB2245220B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06QDECORATING TEXTILES
    • D06Q1/00Decorating textiles
    • D06Q1/12Decorating textiles by transferring a chemical agent or a metallic or non-metallic material in particulate or other form, from a solid temporary carrier to the textile
    • D06Q1/14Decorating textiles by transferring a chemical agent or a metallic or non-metallic material in particulate or other form, from a solid temporary carrier to the textile by transferring fibres, or adhesives for fibres, to the textile
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B44DECORATIVE ARTS
    • B44CPRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C1/00Processes, not specifically provided for elsewhere, for producing decorative surface effects
    • B44C1/16Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like
    • B44C1/165Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like for decalcomanias; sheet material therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B44DECORATIVE ARTS
    • B44CPRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C1/00Processes, not specifically provided for elsewhere, for producing decorative surface effects
    • B44C1/16Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like
    • B44C1/165Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like for decalcomanias; sheet material therefor
    • B44C1/17Dry transfer
    • B44C1/1712Decalcomanias applied under heat and pressure, e.g. provided with a heat activable adhesive

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Decoration By Transfer Pictures (AREA)
  • Decoration Of Textiles (AREA)
  • Laminated Bodies (AREA)

Abstract

A multi-layered transfer sheet for imparting a design onto a fabric such as clothing, bags and the like. The transfer sheet (1) comprises a base peel-off sheet (2) having rayon fibres (5) releasably flocked on the base peel-off sheet (2) by a glue (6). An adhesive layer (7) forming a design is fixed to outer ends of some of the fibres (5). The adhesive layer (7) comprises a mixture of a water based acrylic polymer emulsion, sodium sesquicarbonate, hydroxyethyl cellulose and ammonia. A top layer of granules (15) is fixed on the adhesive layer (7). <IMAGE>

Description

"A Transfer Sheet" This invention relates to a process for manufacturing a transfer sheet for imparting a design onto a fabric such as clothing, bags and the like articles.
It is known to provide a transfer sheet for transferring a design onto a fabric comprising a base sheet of paper on which short fibres are releasably flocked. A design is formed on the fibres and a heat sensitive adhesive layer is applied to free ends of the fibres. When the transfer sheet is placed on the fabric such as for example a T-shirt with the heat sensitive adhesive layer against the T-shirt and heat and pressure are applied to the transfer sheet, the heat sensitive adhesive layer penetrates and bonds with the T-shirt fabric.
The base sheet can then be peeled off to leave the design on the T-shirt. Transfer sheets of this type are described in U.S. Patent specification No. 4,201,810 and 4,142,929.
A problem with these transfer sheets arises due to deterioration of the design caused by repeated laundering and folding of the clothing item which may for example give a cracked appearance to the design.
The present invention is directed towards overcoming this problem.
According to the invention there is provided a multi-layered transfer sheet for imparting a design onto a fabric, the transfer sheet comprising a base peel-off sheet, flocked fibres on the peel-off sheet, an adhesive layer fixed to outer ends of at least portion of the flocked fibres forming the shape of the design, the adhesive layer comprising a mixture of a water based acrylic polymer emulsion, sodium sesquicarbonate and hydroxyethyl cellulose, and a top layer of granules of a thermoplastic material.
In a particularly preferred embodiment of the invention the adhesive mixture further includes ammonia, and the adhesive contains acrylic polymer emulsion, sodium sesquicarbonate, hydroxyethyl cellulose and ammonia in the weight ratio 100:4:0.5:1.5.
It will be noted that the acrylic polymer emulsion retains good elasticity when dried. However on its own it is not very wash resistant and the design would deteriorate rapidly even after a few washes. Sodium sesquicarbonate advantageously improves the wash resistance of the adhesive enabling the design to be repeatedly washed without noticeable deterioration of the design. Hydroxyethyl cellulose is added to thicken the adhesive to enable it to be screen printed.
The ammonia advantageously retards drying of the adhesive.
Generally when screen printing adhesive a printing run must be done continuously because if one stops in the middle of a run of printing even for a relatively short period the adhesive quickly dries on the screen which can not subsequently be used. The addition of ammonia to the adhesive overcomes this problem by preventing the adhesive setting on the screen and this enables printing to be stopped for a period if interrupted for some reason and then later printing can be resumed with the same screen.
In a further embodiment the thermoplastic material comprises a mixture of nylon, polyester and polyethylene in powder form mixed in the weight ratio 7:2:1. Ideally the powder is in granules sized between 200 and 300 microns.
It has been found that if nylon granules are used alone it will lead to the cracking of the design as the nylon does not match the elasticity of the adhesive. By adding polyethylene the elasticity of the granule mix is improved to match the elasticity of the adhesive. Polyester is added to improve the hardness of the granule mix giving improved wear resistance.
The relatively small granule size enables more detailed and/or complicated designs to be achieved.
In another embodiment the base peel-off sheet is of translucent polyester material. This enables the design to be seen while it is still on the base peel-off sheet prior to imparting the design onto a fabric. So a user can readily see what the design will look like when applied to the fabric.
In alternative arrangement the base peel-off sheet is formed by cellulose paper.
In a further embodiment an ink design is formed on the flocked fibres in one or more colours, the adhesive design covering at least portion of the ink design.
According to another aspect of the invention there is provided a process for producing a transfer sheet for transferring a design onto a garment or the like, comprising the steps of: (a) preparing an adhesive by mixing together a water based acrylic polymer emulsion, sodium sesquicarbonate, hydroxyethyl cellulose and ammonia in the weight ratio 100:4:0.5:1.5, (b) applying a quantity of the adhesive in a preset design onto a base peel-off sheet supporting a plurality of releasably flocked fibres, the adhesive covering at least portion of the fibres, (c) covering at least the adhesive design with a layer of granules of a thermoplastic material, the thermoplastic material formed by mixing together nylon, polyester and polyethylene granules sized between 200 and 300 microns in the weight ratio 7:2::1, (d) drying the transfer sheet to remove the water content from the adhesive, (e) removing excess thermoplastic granules from the transfer sheet, and (f) baking the transfer sheet at approximately 1600C to sinter the thermoplastic granules to fix the thermoplastic granules to the adhesive layer.
In a preferred embodiment the granules are applied to the base peel-off sheet by dipping the backing sheet in a granule bath.
In a further embodiment the process includes the step of dying with ink in a number of colours at least portion of the flocked fibres on the backing sheet prior to applying the adhesive to the backing sheet, the ink being applied to the fibres in blocks in a desired pattern or design.
The invention will be more clearly understood by the following description of some embodiments thereof, given by way of example only, with reference to the accompanying drawings, in which: Fig. 1 is a plan view of a transfer sheet according to the invention, Fig. 2 is a sectional view of the transfer sheet taken along the line II-II of Fig. 1, Fig. 3 and Fig. 4 are side elevational views illustrating how a design carried by the transfer sheet is imparted to a garment, Fig. 5 is a front elevational view of the garment carrying the design imparted from the transfer sheet, Fig. 6 is a plan view of another transfer sheet, Fig. 7 is a plan view of a base peel-off sheet portion of the transfer sheet of Fig. 6 carrying an ink design, Fig. 8 is a view similar to Fig. 5 of a garment carrying a design imparted from the transfer sheet of Fig. 6, Fig. 9 is a plan view of another transfer sheet, Fig. 10 is an underneath plan view of a further type of transfer sheet, and Fig. 11 is an elevational view of the transfer sheet of Fig. 10.
Referring to the drawings and initially to Figs. 1 to 5 thereof, there is illustrated a transfer sheet according to the invention indicated generally by the reference numeral 1.
The transfer sheet 1 comprises a cellulose paper base peel-off sheet 2 having a top face 3 and bottom face 4. A plurality of short rayon fibres 5 are releasably flocked on the top face 3 by a glue 6 which covers the top face 3. A layer of adhesive 7 forming the shape of a design, in this case three spacedapart discs 10, 11, 12, is fixed to free outer ends of some of the fibres 5. The adhesive comprises a mixture of a water based acrylic emulsion, sodium sesquicarbonate, hydroxyethyl cellulose and ammonia. An outer surface of the adhesive layer 7 is coated with a top layer of thermoplastic granules 15 supported on and bonded to the adhesive layer 7 the granules 15 comprising a mixture of nylon, polyester and polyethylene.
To manufacture the transfer sheet 1 first the adhesive is prepared by mixing together the water based acrylic emulsion, sodium sesquicarbonate, hydroxyethyl cellulose and ammonia in the weight ratio 100:4:0.5:1.5. The water based acrylic emulsion is of high solids content (approximately 60%) and is self cross-linking. It will also cure at low temperature.
100 parts by weight of the acrylic emulsion is agitated for example by a mixer in a mixing container. To the emulsion is added 4 parts by weight of sodium sesquicarbonate. Prior to adding the sodium sesquicarbonate which is in powder form it is dissolved as a 25% solution in warm water. To the adhesive mixture is added 0.5 parts by weight of hydroxyethyl cellulose. The hydroxyethyl cellulose is also in powder form and is dissolved in the weight ratio 1:4 with hot water. The adhesive mixture is then stirred for approximately 25 minutes to thicken the adhesive mixture. Then 1.5 parts by weight of industrial strength (approximately 88%) ammonia is added to the adhesive mixture, first being diluted to half strength with water. The adhesive mixture is then stirred for a further five minutes.
The adhesive mixture Is then screen printed in the desired design onto the fibres 5 of the base peel-off sheet 2, in this case forming the three discs 10, 11, 12. Next the backing sheet 2 with the adhesive design is dipped in a granule bath to coat the outer ends of the fibres 5 with the granules 15.
The granules 15 are sized between 200 and 300 microns and are 70% nylon, 20% polyester and 10% polyethylene. Then the transfer sheet 1 is delivered t O an oven to force dry at approximately 75"C the adhesive. The adhesive could alternatively be dried at room tempeisture, however, obviously this would take much longer. After drying the granules 15 will be loosely stuck to the adhesive layer 7 and any excess granules not on the adhesive layer 7 are brushed off the fibres 5. While the granules 15 on the adhesive layer 7 are loosely stuck to the adhesive layer 7 rubbing the upper surface of the transfer sheet 1 will remove some of the granules 15.To fix the granules 15 to the adhesive layer 7 the transfer sheet 1 is baked in an oven for approximately one minute at about 1600C to sinter the granules onto the adhesive layer. This baking also advantageously speeds up the cross linking of the adhesive.
Referring now in particular to Figs. 3 to 5, to transfer the design onto a T-shirt 20 the granule layer 15 is placed against an outer surface 21 of the T-shirt 20 and heat and pressure is applied to the bottom face 4 of the base peel-off sheet 2 such as with a domestic iron for example. The granules 15 melt and seep into the fabric of the T-shirt 20 fixing the design, in this case the discs 10, 11, 12 to the surface 21 of the T-shirt. The transfer 1 is allowed to cool and then the base peel-off sheet 4 is peeled away leaving the three discs 10, 11, 12 on the T-shirt 20 as shown in Fig. 5.
It will be appreciated that the flock 5 may be in any suitable colour. To colour match the flock 5 with a particular garment a suitable ink may be prepared and the flock 5 dyed prior to applying the adhesive design.
It will be appreciated that the adhesive used has good elasticity and is very washable and is therefore resistant to deterioration in use by laundering the clothing item.
Referring now to Figs. 6 to 8 there is illustrated another transfer sheet 40 substantially similar to the transfer sheet described with reference to Figs. 1 to 5 and like parts are assigned the same reference numerals. The only difference between this and the previously described transfer sheet is that in this case each of the discs 10, 11, 12 forming the design is made in a different colour. To achieve this, prior to applying the adhesive design, portions of the flocked fibres 5 are coloured by screen printing different coloured inks onto the fibres 5 such that the base peel-off sheet 2 has a white undyed area 41 a red area 42 and a blue area 43 (see Fig. 7). Then the base peel-off sheet 2 is dried in an oven to set the ink. Thereafter the transfer sheet 40 is prepared and used in similar fashion to the transfer sheet described previously with reference to Figs. 1 to 5.It will noted from Fig. 8 that when the design is imparted to the T-shirt 20 instead of three discs 10, 11, 12 all of the same colour in this case the disc 10 will be white, the disc 11 red and the disc 12 blue.
Fig.9 shows a transfer sheet 50 with an alternative design 51 formed in like manner to the transfer sheet described previously with reference to Figs. 6 to 8 and like parts are assigned the same reference numerals. In this case three coloured areas are screen printed onto the fibres 5 of the base peel-off sheet 2 giving a blue area 52, green area 53 and red area 54 in the configurations shown. The adhesive design 51 is then screen printed onto the ink design as shown.
Preparation and use of the transfer sheet 50 is similar to that for the transfer sheet described with reference to Figs.
6 to 8.
Referring now to Fig. 10 and Fig. 11 there is illustrated another transfer sheet 60 formed in similar fashion to the transfer sheet described with reference to Figs. 6 to 8 and like parts are assigned the same reference numerals. In this case a base peel-off sheet 2 is provided which comprises a translucent polyester sheet which allows a user to readily see a design 63 on the transfer sheet 60 prior to transferring the design 63 onto a T-shirt or the like. Obviously the glue 6 holding the flocked fibres 5 must also be translucent. In this case also substantially all of the reverse side of the design 63 is covered with the adhesive 6. The transfer 60 is applied to a garment or the like in similar fashion to the transfer described with reference to Figs. 6 to 8.

Claims (12)

1. A multi-layered transfer sheet for imparting a design onto a fabric, the transfer sheet comprising a base peel off sheet, flocked fibres on the base peel-off sheet, an adhesive layer fixed to outer ends of at least portion of the flocked fibres forming the shape of the design, the adhesive layer comprising a mixture of a water based acrylic polymer emulsion, sodium sesquicarbonate and hydroxyethyl cellulose, and a top layer of granules of a thermoplastic material.
2. A transfer sheet as claimed in claim 1 wherein the adhesive also contains ammonia and the adhesive contains acrylic polymer emulsion, sodium sesquicarbonate, hydroxyethyl cellulose and ammonia in the weight ratio 100:4:0.5:1.5.
3. A transfer sheet as claimed in any preceding claim wherein the thermoplastic material comprises a mixture of nylon, polyester and polyethylene in powder form, mixed in the weight ratio 7:2:1.
4. A transfer sheet as claimed in any preceding claim wherein the granules are sized between 200 and 300 microns.
5. A transfer sheet as claimed in any preceding claim wherein the base peel-off sheet is translucent polyester material.
6. A transfer sheet as claimed in any of claims 1 to 4 wherein the base peel-off sheet is cellulose paper.
7. A transfer sheet as claimed in any preceding claim wherein an ink design is formed on the flocked fibres in one or more colours, the adhesive design covering at least portion of the ink design.
8. A process for manufacturing a transfer sheet as claimed in any preceding claim, the process comprising the steps of: (a) preparing an adhesive by mixing together a water based acrylic polymer emulsion, sodium sesquicarbonate, hydroxyethyl cellulose and ammonia in the weight ratio 100:4:0.5:1.5, (b) applying a quantity of the adhesive in a preset design onto a base peel-off sheet supporting a plurality of releasably flocked fibres the adhesive covering at least portion of the fibres, (c) covering at least the adhesive design with a layer of granules of a thermoplastic material, the thermoplastic material formed by mixing together nylon, polyester and polyethylene granules sized between 200 and 300 microns in the weight ratio 7:2: :1, (d) drying the transfer sheet to remove the water content of the adhesive, (e) removing excess thermoplastic granules from the transfer sheet, and (f) baking the transfer sheet at approximately 1600C to sinter the thermoplastic granules to fix the thermoplastic granules to the adhesive layer.
9. A process as claimed in claim 8 including the step of dying with ink in one or more colours at least portion of the flocked fibres to form an ink design on the fibres prior to applying the adhesive layer.
10. A transfer sheet whenever produced by the process of claim 8 or 9.
11. A transfer sheet substantially as hereinbefore described with reference to the drawings.
12. A process substantially as hereinbefore described with reference to the drawings.
GB9013936A 1990-06-22 1990-06-22 A transfer sheet Expired - Lifetime GB2245220B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB9013936A GB2245220B (en) 1990-06-22 1990-06-22 A transfer sheet
BE9000698A BE1002243A7 (en) 1990-06-22 1990-07-09 TRANSFER SHEET.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9013936A GB2245220B (en) 1990-06-22 1990-06-22 A transfer sheet

Publications (3)

Publication Number Publication Date
GB9013936D0 GB9013936D0 (en) 1990-08-15
GB2245220A true GB2245220A (en) 1992-01-02
GB2245220B GB2245220B (en) 1993-11-03

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ID=10678033

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9013936A Expired - Lifetime GB2245220B (en) 1990-06-22 1990-06-22 A transfer sheet

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BE (1) BE1002243A7 (en)
GB (1) GB2245220B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994019530A1 (en) * 1993-02-22 1994-09-01 Hiweld Limited A laminated article
WO2010075436A1 (en) 2008-12-22 2010-07-01 Illinois Tool Works, Inc. Applying a design on a textile
WO2012035505A3 (en) * 2010-09-15 2012-05-10 Itw Ireland Applications of designs to garments

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2061188A (en) * 1979-08-09 1981-05-13 Tokyo Horaisha Co Transferable flocked fiber design or material
GB2126951A (en) * 1982-09-21 1984-04-04 Trans Worth Systems Sa Flock transfer
GB2211143A (en) * 1987-10-22 1989-06-28 Beitlich R Chem Fab Transfers for applying designs to textiles

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2061188A (en) * 1979-08-09 1981-05-13 Tokyo Horaisha Co Transferable flocked fiber design or material
GB2126951A (en) * 1982-09-21 1984-04-04 Trans Worth Systems Sa Flock transfer
GB2211143A (en) * 1987-10-22 1989-06-28 Beitlich R Chem Fab Transfers for applying designs to textiles

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994019530A1 (en) * 1993-02-22 1994-09-01 Hiweld Limited A laminated article
WO2010075436A1 (en) 2008-12-22 2010-07-01 Illinois Tool Works, Inc. Applying a design on a textile
WO2012035505A3 (en) * 2010-09-15 2012-05-10 Itw Ireland Applications of designs to garments
CN103119216A (en) * 2010-09-15 2013-05-22 Itw爱尔兰 Applications of designs to garments
CN103119216B (en) * 2010-09-15 2015-09-16 Itw爱尔兰 The pattern of clothes prints additional

Also Published As

Publication number Publication date
GB9013936D0 (en) 1990-08-15
BE1002243A7 (en) 1990-10-30
GB2245220B (en) 1993-11-03

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732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PE20 Patent expired after termination of 20 years

Expiry date: 20100621