IPC分类号：
B44C1/17 | B41M3/12 | B32B3/00 | B44C1/16 | D06Q1/00
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：
PHOTO-LITH INTERNATIONAL
原始申请(专利权)人：
PHOTO-LITH INTERNATIONAL
当前申请(专利权)人地址：
Stanton, CA
代理机构：
KNOBBE,MARTENS,OLSON,HUBBARD & BEAR
摘要：
The first layer of elastomeric synthetic resin transparent ink is screened onto a transfer sheet and is fused. One or more layers of compatible ink are deposited thereon and dried to form an image. Next, an elastomeric adhesive protective layer is applied and fused. The intermediate article thus produced by this process is a transfer sheet carrying a transfer lamination which is applicable to fabric. The adhesive layer is applied against the fabric with pressure, and the entire structure is heated. During this heating, the elastomeric adhesive is absorbed into the fabric and is cured in place to become thermoplastic. At the same time, the first layer against the transfer sheet becomes plastic and the transfer sheet is removed.
技术问题语段：
As discussed below, the usual printing methods are not well suited to directly applying an image onto a fabric, and particularly a stretchable fabric.|Several photographic or electrostatic printing processes are also known, but are not economically feasible to apply an image to a stretchable fabric in mass quantities.|Letterpress utilizes a raised surface impression and is limited to single sheet feed.|However, due to the elasticity of the rubber plate, fine half-tone screens or close color registration is impractical.|However, the ink transfered cannot be controlled closely enough to allow full color or fine monochrome halftones.|The high cost of gravure printing plates has caused many textile printers to abandon this method for textile printing.|The rigidity or flexibility of the material being printed is unimportant, as it normally does not move during the printing process.|The mimeograph process also falls in this category, but is impractical for textile type applications.|Coarse mesh screens will allow heavy deposits of more viscous inks, but do not allow fine detail.|However, the halftone screen mesh and the actual silk-screen mesh are conflicting, and fine definition of the halftone is not possible.|Thus, very fine monochromatic halftones are impractical.|Furthermore, precise deposits of ink are necessary for full color printing to make full color silk-screen printing impractical.|These materials are useful for the purpose, but it has been found that when the transfer sheet is a larger dimension in order to accommodate larger images, the oven drying of subsequent layers causes dimensional changes in the transfer sheet.|When viscosity is lowered by increasing the plasticizer content, the resultant surface of the fused first layer 12 does not work well in accepting the process inks used in the following printing steps.|Aromatic hydrocarbons as diluents are undesirable, because they reduce the elastomeric qualities of the finished fused film, and such reduction is contrary to the desired ultimate results.|The long baking at lower temperatures cannot be substituted for the required temperature, because the vinyl chloride resin does not soften for fusing until about 350.degree. F.|For example, standard yellow process ink has a tendency to spread during the thermal treatment, resulting in yellow dominance in a multi-color halftone image.
技术功效语段：
Accordingly, it is an object of this invention to provide a transfer printing process by which an image can be transferred from a sheet to a substrate. It is another object to provide a transfer printing process by which an image can be applied to an elastic surface, such as a woven or knitted textile fabric. It is a further object to provide a transfer printing process by which an image formed by surface-to-surface printing methods can be transferred onto a textile material. It is another object to provide a transfer lamination mounted upon a transfer sheet which can be attached to an elastomeric substrate, such as a fabric. It is another object to utilize the speed, accuracy, and definition of standard high speed surface-to-surface printing processes to print images which can be subsequently transferred to other substrates. It is a further object to provide a transfer lamination by which an image can be transferred onto any one of a plurality of different substrates, such as textiles, apparel, apparel accessories, labels, leather, elastics and the like. It is another object to provide an image carrying transfer lamination which can be applied to an elastic or flexible material. It is a further object to economically and accurately apply a fine quality monochrome or multicolor image to an elastic or flexible material.
权利要求：
What is claimed is:
1. A transfer lamination having transfer layers for the application of an image onto fabric substrate, said transfer layers consisting of:
a transparent first layer which forms a tough rubbery film which has a high degree of thermal stability and is resistent to yellowing;
at least one image-carrying layer printed on the back of said first layer by a surface-to-surface printing method; and
an adhesive layer forming the back layer of said transfer lamination for adhesive attachment of said transfer lamination to a resilient substrate said adhesive layer forming a tough rubbery film which has a high degree of thermal stability and is resistent to yellowing.
2. The transfer lamination of claim 1 wherein
said first layer and said adhesive layer are formed of heat resistant thermal elastic stretch ink.
3. The transfer lamination of claim 2 wherein
said adhesive layer is pigmented to be opaque.
4. The transfer lamination of claim 3 wherein
said adhesive is adhesively secured to a fabric substrate.
5. The transfer lamination of claim 4 wherein
said adhesive layer is a thermally cured adhesive and is thermally bonded to said fabric substrate.
6. The transfer lamination of claim 1 further consisting of:
a transfer sheet to which said first layer is secured for the support of said first layer during the application of said image layer, and said adhesive layer, for handling said transfer lamination.
7. The transfer lamination of claim 6 wherein
said first layer and said adhesive layer are formed of heat resistant thermal elastic stretch ink.
8. The transfer lamination of claim 7 wherein
said adhesive layer is pigmented to be opaque.
9. In a process for producing a transfer lamination employed to apply an image to a flexible substrate which comprises the steps of forming a first transparent layer, printing an image layer onto the first layer, applying an adhesive layer to the image layer so that the three layers form a transfer lamination which can be adhesively applied to a flexible substrate, and drying and curing said layers, the improvement wherein:
the first transparent layer is formed on a transfer sheet by applying a layer of transparent polyvinyl chloride plastisol heat resistant thermal elastic stretch ink to a release surface of the transfer sheet and partially curing said layer by infrared heating; the image layer is formed on the first layer so as to be visible through the first layer by lithographically printing heat resistant ink which is compatible with the first layer on to said first layer; and the adhesive layer is formed by applying a polyvinyl chloride plastisol heat resistant thermal elastic stretch ink over the first layer and the image layer; said layers being partially cured such that the first layer and adhesive layers are not tacky at room temperature.