JPS6024235B2 - Transfer printing method and equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a transfer printing method that has great versatility in the material of the transfer target and the dye, and has simple equipment and manufacturing steps, and an equipment used in this method.

Conventional transfer printing methods are broadly divided into two methods commonly referred to as dry transfer printing methods and wet transfer printing methods.

The dry transfer printing method consists of a transfer paper made of base paper printed with ink containing sublimable disperse dyes or sublimable cationic dyes as a main component, and synthetic fibers such as polyester fibers and acrylic fibers that are in contact with the ink surface of this transfer paper. Transfer printing is performed by heating and pressurizing a fabric to be transferred at a temperature of around 200 oo for a predetermined period of time to cause the dye to sublimate and migrate into the transfer object. This dry method has the advantage of a simple process, but has the disadvantage that the dye and the material of the object to be transferred are limited to specific ones, as mentioned above. In addition, this method has a problem in that the dye is more likely to stain the surface because the dye has less penetration into the fabric than the direct printing method that does not use transfer paper. The green transfer printing method heats and presses a laminate consisting of a transfer paper and an object to be transferred to instantly transfer ink from the transfer paper to the fabric surface, and then performs steam heating treatment (steaming) or thermosol treatment to transfer the ink to the surface of the fabric. The dye is fixed onto the fabric.

Therefore, in this wet method, various dyes can be used in addition to sublimation dyes as in the dry method.
Various fabric materials can be selected that are compatible with these dyes. However, because it is necessary to physically attach the ink layer from the transfer paper to the fabric surface during transfer, it is necessary to interpose a transfer resin layer between the base paper of the transfer paper and the ink layer on the surface. It adheres to the fabric together with the ink layer. Therefore, it is necessary to remove the resin and undyed dye by adding soaping treatment and water washing treatment after the steam heating process, which makes the process that much more complicated. In addition, as a unique transfer printing method, sheets with ground-dyed or printed patterns are layered on top of each other and introduced into a high-pressure, high-temperature steamer, where they are instantly transferred by a pair of press rollers installed immediately after the introduction port. A method of developing and fixing color within the same steamer is also known.

However, since this method uses a sealed high-pressure steamer, special equipment must be applied to the inlet and outlet of the sheet and fabric so as not to change the pressure inside the steamer. Furthermore, since the transfer is done virtually instantaneously by a pair of press rollers, if a transfer paper with a dry printed pattern without a transfer varnish layer is used, it may not be possible to obtain transfer with sufficient density. This is the reality. The present invention was made based on the above circumstances, and it is possible to expand the versatility of dyes for transfer paper and materials for transfer objects, and to provide a transfer printing method with simple equipment and processes, and a transfer printing method using this method. Regarding the equipment used. That is, the transfer printing method of the present invention is characterized in that the object to be transferred, which has been brought into contact with an ink layer that does not have a transfer resin layer, is pressed for a certain period of time in a steam atmosphere at normal pressure and high temperature, or is heated at the same time as the pressing. .

Therefore, the transfer printing apparatus of the present invention is an apparatus characterized by comprising a steam heating chamber at normal pressure and high temperature, and a means provided in this chamber for pressing the transfer paper and the object to be transferred for a certain period of time or for heating simultaneously with the pressing. be. ), high temperature is 1000
0 or more, and as the steam heating chamber, a steamer that applies steam at a normal pressure of 100 °C, known as a normal pressure steamer, or an HT steamer that applies superheated steam at normal pressure, etc. can be used. The steam heating chamber does not necessarily have to be sealed. The means for pressing the laminate consisting of the transfer paper and the object to be transferred, or for further heating at the same time as pressing, is, for example, a flat press machine conventionally used in the dry transfer printing method, or a combination of a roll and an endless belt. It's okay.
A specific example of the apparatus of the present invention will be described below with reference to FIG.

In the figure, 1 indicates a steam heating chamber, and this chamber can carry out normal pressure steaming from 100 oo to 25,000 oo over superheated steam steaming at normal pressure.

Such steam heating chambers are known as normal pressure steamers, HT steamers, etc., and methods for applying the necessary steam to this chamber are also known. This chamber does not necessarily have to be kept airtight; for example, it is allowed for some steam to leak outside from the inlet and outlet of the transfer material 3, the transfer paper 4 that does not have a transfer resin layer, etc. . This chamber is provided with a metal loaf 2 that presses the laminate consisting of the transfer paper 4 and the transfer object 3 for a certain period of time or heats it simultaneously with the pressing, and an endless belt 5 made of a heat-resistant and moisture-resistant nonwoven fabric. . The laminate consisting of the transfer paper 4 and the object to be transferred 3 is pressed between the metal roller 2 and the endless belt 5 for a predetermined period of time, or is heated at the same time as the pressing, and the necessary thermal energy and pressure are obtained to complete the transfer. . The pressure must not be instantaneous.
This is because the necessary thermal energy and pressure are insufficient, and sufficient printing cannot be obtained. After the transfer, the transfer paper 4 and the fabric 3 are separated. 6 shows the base paper of the transfer paper after peeling.

7 is a hanging bar for hanging the fabric after peeling
This is a conveyor chain that moves 8.

The hanging bar 8 lifts the dyed fabric while rising along with the movement of the compare chain 7, and places it on the rail 9 for transportation. Hanging bar on rail 9
8 are successively pushed towards the outlet section 12 of the fabric. After the fabric has been transported, the hanging bar 8 is again held at a predetermined interval by the compare chain 7 at the outlet, moves together with the compare chain 7, and is used again to form a fabric loop. This is a piece of fabric suspended from a hanging bar 8.

Note that the device consisting of the compare chain 7, the hanging bar 8, and the rail 9 is for more firmly fixing the dye to the fabric after transfer, and is not essential to the present invention.
In the transfer printing apparatus configured as described above, the ink layer of the transfer paper is made of a sublimable disperse dye, the cloth of the transfer target is made of polyester fiber, and
As a result of carrying out transfer printing by filling the cloth with superheated steam at normal pressure of 190q0, it was possible to obtain a dyed fabric with good internal permeability, which could not be obtained by the conventional dry transfer printing method.

The effects of the present invention will be better understood by the following examples.

EXAMPLE Using the above-described transfer printing apparatus shown in the figure, polyester smooth was applied to the ink surface of transfer paper for sublimation transfer printing (manufactured by Toppan Printing Co., Ltd.).
While applying pressure by contacting with sujiage (manufactured by Toray Industries),
When these were steam-heated at 170° C. for 3 minutes, a beautiful dyed cloth with good internal permeability was obtained.

[Brief explanation of the drawing]

The drawing is an explanatory diagram showing an example of a transfer printing apparatus of the present invention. 1... Steam heating chamber, 2... Metal roll for heating and pressing, 3... Transferred object, 4...
Transfer paper.

Claims (1)

[Scope of Claims] 1. A transfer material that is brought into contact with an ink layer of a transfer paper that does not have a transfer resin layer is pressed for a certain period of time in a steam atmosphere at normal pressure and high temperature, or is heated at the same time as the pressing. Transfer printing method. 2. A transfer printing and dyeing device consisting of a steam heating chamber at normal pressure and high temperature, and a means provided in this chamber for pressing the transfer paper and the object to be transferred for a certain period of time. 3. The device according to claim 2, wherein heating means is added to the pressing means.