Method of dry transfer printing of synthetic fibrous material with disperse dye and transfer paper

Abstract

A transfer paper which comprises a transfer paper base and a disperse dye ink printed thereon or imparted thereto. The transfer paper is used in a dry transfer printing method in which the transfer paper is pressed against a synthetic fibrous material with heating to thereby transfer the dye (pattern) from the transfer paper to the fibrous material. The transfer paper is characterized in that the transfer paper base has a releasant layer comprising a synthetic resin soluble in organic solvents and an ink-receiving layer made from a mixture comprising a hydrophilic synthetic resin which softens or melts upon heating, a hydrophilic binder, and various aids, the ink-receiving layer being superposed on the releasant layer. With this transfer paper for dry transfer printing, a highly fine pattern can be printed with excellent reproducibility. Furthermore, the transfer paper enables quick delivery by so-called printing without platemaking. The method of dry transfer plating employs this transfer paper.

Description

TECHNICAL FIELD[0001]The present invention relates to a method of dry transfer printing on a synthetic fiber material using a disperse dye, and to a transfer paper.BACKGROUND ART[0002]For drawing a design fast and finely on a cloth with a dye, screen printing, roller printing, rotary screen printing, gravure printing, and transfer printing based on the cited printing techniques have conventionally been known, and also industrially employed. These plate printing techniques have, however, the following drawbacks.[0003]i. The number of applicable colors is limited.[0004]ii. Although printing with pattern frames of decomposed three primary colors can express a multicolor image, it is difficult to adjust the hue and density of the colors composed from the three primary colors.[0005]iii. Reproducibility of the printing effect is prone to be degraded because of forming multiple layers.[0006]Besides, problems of loss and waste of materials have been pointed out, such as the expensive plate ...

AI Technical Summary

Benefits of technology

[0056]The present invention provides various eminently beneficial effects from the viewpoint of cost, quality and ecological benefit, such as enabling quick delivery by the plateless printing and easy production of a sharp, high-density, high-quality and fast design, upgrading the texture of the synthetic fiber product obtained, eliminating the need to prepare surplus paste, and allowing utilization of existing general-purpose equipments. Also, the dry transfer printing method according to the present invention enables executing a small-lot production at a low cost, and yet obtaining a high-quality transfer-printed product. In particular, the present invention not only simplifies the printing technique which has so far been complicated thereby creating an advantage in the industrial production, but also provides a special effect that anybody can choose a favorite design and print the design clearly and fast on various synthetic fiber materials at any convenient place, and obtain excellent texture.

[0057]The present invention provides a dry transfer printing method for a synthetic fiber material that enables expressing a delicate printed design with high reproducibility, which has so far been considered to be quite difficult, and provides a novel technique established against many obstacles. For example, although two properties of the transfer paper, the preservation stability (the ink receiving layer is to be kept from being damaged or peeled off during the storage of the transfer paper) and the transfer performance to the cloth (transferring 100% of the ink receiving layer through the tr

Problems solved by technology

Although printing with pattern frames of decomposed three primary colors can express a multicolor image, it is difficult to adjust the hue and density of the colors composed from the three primary colors.

Reproducibility of the printing effect is prone to be degraded because of forming multiple layers.

Besides, problems of loss and waste of materials have been pointed out, such as the expensive plate making cost in the case of a small-lot production, and necessity of preparing a surplus amount of color paste than is actually necessary for the printing process.

This technique has, however, such drawback that when printing a dye ink in small dots with the inkjet printer on an uncolored transfer paper, uniformity in printing effect among the dots becomes insufficient, and that the dye solution oozes out thus destroying the delicacy.

A drawback of the direct printing process on a cloth is that, as stated in patent documents 1 (JP-A No. 2005-264021, page 9, paragraphs 0047 to 0051) and 2 (JP-B No.

The pretreatment has to be different depending on the type of the woven or knitted fabric (type of weaving or knitting, thickness and twisting type of thread, etc.), which leads not only to complication of the process and an increase in cost, but also to the need of preparing pretreatment facilities and special chemicals, thus resulting in degraded economical efficiency and stability of quality.

Besides, it is difficult to apply the direct printing process to thick fabrics including a three-dimensional woven or knitted fabric or three-dimensional cloth such as velvet and a sewn fabric, as stated in a patent document 3 (JP-A No. 2004-176203).

Further, in the case of direct printing on the cloth the transfer paper cannot be stocked in advance, and therefore quick delivery may become difficult, in view of the printing speed of the inkjet printer.

(1) Because of em