IPC分类号：
B44C1/165 | B41M3/12 | B44C1/175 | C08F299/06 | C08F299/00 | C09D11/10 | B32B3/18 | B44C1/16
国民经济行业分类号：
C2438 | C2436 | C2435 | C2434 | C2433 | C2432 | C2431 | C3076 | C3075 | C2439
当前申请(专利权)人：
REED, KENNETH J. | LYTHGOE, ALAN L.
原始申请(专利权)人：
REED, KENNETH J. | LYTHGOE, ALAN L.
当前申请(专利权)人地址：
London, S.W.3, GB | Hythe, Kent, GB
发明人：
REED, KENNETH J. | LYTHGOE, ALAN L.
代理机构：
JACKSON, WILLIAM E.
摘要：
A method of manufacturing a water-release transfer is disclosed in which a design in a photopolymerizable ink is applied to a substrate having a water-soluble release coating and the design is subjected to photopolymerizing radiation, e.g. ultra-violet light, to cause the ink to polymerize to a solid state. Preferably the ink comprises a mixture of a liquid unsaturated monomer and a viscous or solid prepolymer, and one or both of the monomer and prepolymer contain acryloyl or methacryloyl groups. The invention includes water-release transfers manufactured using photopolymerizable inks.
技术功效语段：
Photopolymerisable inks consist of ethylenically unsaturated materials and, tensile strength, stretch resistance and flexibility are partly controlled by the crosslink density of the photopolymerised ink. The greater the cross-link density, the higher the tensile strength and stretch resistance and the lower the flexibility.
Certain pigments such as carbon black and titanium dioxide reduce the rate of photopolymerisation so the concentration of these in the inks is limited and extra layers are applied when necessary each with exposure to polymerisation radiation. Alternatively pigments are used which have less effect on rate of photopolymerisation for example black iron oxide, finely powdered aluminium and, zinc sulphide, barium sulphate, lithopone and antimony oxide. For decoration and marking of ceramics, vitreous enamels, glass and similar substrates, frits, powdered glazes and inorganic pigments are dispersed in the photopolymerisable liquid ink medium and after printing and photopolymerisation of the colour layers a clear layer is overprinted and photopolymerised to increase film strength required for a water-slide transfer. After transfer and allowing the water to evaporate, the substrate is fired to burn away the organic constituents and fire the colour onto or with the substrate.
权利要求：
We claim:
1. A water-release transfer which comprises a transferable design formed in a photopolymerized ink supported on a flexible water-permeable carrier substrate and having an intervening water-soluble release layer, which provides a surface capable of being wetted by said ink while in its unpolymerized state, between the substrate and the design, said design comprising a solid film of flexible and stretch-resisting, cross-linked polymer produced by photopolymerization of a liquid ink printed on the substrate and consisting essentially of a blend of rapidly photopolymerized, ethylenically unsaturated monomer and prepolymer containing pendant or terminal acryloyl or methacryloyl groups wherein the prepolymer has about 2 to 6 acryloyl or methacryloyl groups per molecule whereby on photopolymerization a cross-linked and flexible film is produced.
2. A transfer according to claim 1 wherein the liquid ink contains at least one photopolymerizable monomer the main component of which contains 2 acryloyl or methacryloyl groups per molecule.
3. A transfer according to claim 1 wherein the ink includes a prepolymer which is an acrylated or methacrylated urethane prepolymer which contains about 2 to 6 acryloyl or methacryloyl groups per molecule.
4. A transfer according to claim 1 wherein the ink contains a monomer which is a mono or poly acrylate.
5. A transfer according to claim 1 wherein the ink contains one or more prepolymers having a molecular weight of 250 to 5000.
6. A transfer according to claim 1 wherein the ink comprises a mixture of a high viscosity liquid or solid photopolymerisable prepolymer and a low viscosity liquid monomer or low molecular weight prepolymer.
7. A transfer according to claim 1 wherein the design consists essentially of a plurality of layers including a cross-linked, photopolymerised layer and one or more additional layers.
8. A transfer according to claim 7 wherein all of the individual layers making up the design are photopolymerized.
9. A transfer according to claim 1 in which said liquid ink contains a photoinitiator and is photopolymerized by exposure to ultra-violet light.
10. A transfer according to claim 1 wherein the liquid ink is photopolymerised by exposure to electron beam radiation.
11. A transfer according to claim 1 in which the design layer is coloured by pigments or dyes which do not inhibit fast photopolymerisation when exposed to actinic radiation.
12. A transfer according to claim 11 wherein the design layer contains a pigment selected from zinc sulfide, barium sulfate, black iron oxide, finely powdered aluminium and antimony oxide and mixtures of two or more of such pigments.
13. A transfer according to claim 1 wherein the design layer is from 8 to 50 micrometers thick.
14. A transfer according to claim 1 wherein the design is coated with an adhesive.
15. A transfer according to claim 1 wherein the photopolymerized design has a elongation at break between 0.5 and 20%.