JPH0464520B2 - - Google Patents

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to a slide transfer method for unglazed materials using a transfer sheet in which a sandblasting mask layer or an underpainting pattern layer is formed by screen printing, and since the transfer sheet has high water absorption. Slide transfer is performed using a transfer sheet on which a sandblast mask layer or an underpainting pattern layer is formed by screen printing on the surface of an unglazed object on which slide transfer is not possible.

(Conventional technology) Unglazed objects, which are intermediate products such as tableware, weigh 20
% or more of water by weight, and if the above is converted into volume, the water absorption rate of bisque ceramics is extremely large. For this reason, it is completely impossible to slide the pattern layer of a transfer sheet manufactured by screen printing to a designated position on the bisque by using a sliding means. For this reason, although it is economically advantageous to transfer the sandblasting mask layer, underpainted pattern layer, etc. of the transfer sheet by a sliding means, slide transfer is impossible, so slide transfer is carried out at a specified position on the surface of the bisque. No method has been developed to do so.

(Problems to be Solved by the Invention) As stated in the previous section, it is impossible to slide-transfer a sandblast mask layer or an underpainted pattern layer onto the surface of an unglazed object. For this reason, the sandblast mask layer or the underpainted pattern layer of a transfer sheet produced by screen printing is not used even though it is known to be advantageous because it has fine details and can be mass-produced. Since the present invention uses the above transfer sheet, it is an object of the present invention to develop a method that can overcome the water absorption of unglazed ceramics and enable slide transfer.

(Means for Solving the Problems) The present invention aims to solve the problems stated in the previous section. In order to prevent this from occurring, we created a non-drying and highly slippery film, which is not used in conventional slide transfer methods, through a process of forming a coating film made of a viscous solution dissolved in a non-drying solvent. A sandblast mask layer or an underpainted pattern layer is printed on the water-soluble glue layer of the absorbent base sheet by screen printing, and the transfer sheet with a releasable cover coat is soaked in water to remove excess moisture. The mask layer or the underpainted pattern layer separated from the base sheet by the sliding method together with the cover coat is slid onto the coating film of the unglazed ceramic to a designated position, thereby allowing sliding movement without worrying about the water absorption of the unglazed ceramic. The method is characterized in that it combines the steps of applying a coating film, then removing as much of the coating film as possible with a rubber squeegee, and further peeling off the cover coat to stabilize the mask layer or underpainting pattern layer on the surface of the bisque. The present invention relates to a slide transfer method of transferring a transfer sheet on which a sandblasting mask layer or an underpainted pattern layer is formed by screen printing onto an unglazed object.

(Function) The present invention forms a coating film coated with a viscous solution dissolved in a soluble solvent on the surface of an unglazed object that makes it impossible to slide the pattern layer of the transfer seal and the cover coat layer that supports the pattern layer. Through the process of
To enable a sandblasting mask layer or an underpainting pattern layer and a cover coat of a transfer sheet to be applied in the next step to be slid without being affected by the physical properties of unglazed pottery, which has high water absorption.

In addition, the mask layer or underpainted pattern layer and cover coat of the transfer sheet enable sliding movement by adhesion of water, but this layer can be separated from the water-absorbing sheet of the transfer sheet by a sliding method. The technique is similar to the conventional slide transfer technique for materials such as glazed dishes that can be slid onto the surface of a glaze. It can be applied by After the coating film on the surface of the bisque is slid to the designated position as described above, it is removed as much as possible with a squeegee and the mask layer or underpainted pattern layer is transferred to the surface of the bisque. At that time, a coating film that remains slightly and does not cause slippage is used to create a stable transfer, and when the sanding mask layer is transferred, the three-dimensional engraved pattern on the surface of the unglazed object is created by sanding. There is no problem in calcination at around 800℃ when forming and transferring the underpainted pattern layer.

(Example) 1st step A non-drying solvent prepared by mixing 30 to 60% by weight of a water-soluble glue consisting of dextrin or french to a non-drying solvent, ethylene glycol or glycerin, either alone or in a mixture of equal amounts, and kneading the mixture. A dry adhesive solution is applied by spraying onto the surface of an unglazed object 1 such as a dish cloth, to form a coating film 2 having a coating thickness of about 30 to 50 μm (FIG. 1).

Second step As shown in FIG. 2, a sandblast mask layer or underpainting pattern 13 is printed by screen printing on the water-soluble glue layer (dry) 12 of the water-absorbent sheet 11, and a cover coat with releasability is further applied. The transfer sheet 15 provided with the mask layer 14 is immersed in water to swell the water-soluble glue layer 12 and remove excess adhering moisture. Water absorbent sheet 11
It is separated by a known sliding method and slid onto the coating film 2 of the bisque ware 1. At this time, normally it is almost impossible to accurately transfer the mask layer or pattern layer 13 to the specified position on the bisque 1, but the coating film 2
It can be slid to a designated position by its viscosity (Figure 3).

In the above, when the mask layer 13 is formed by screen printing, APR resin manufactured by Asahi Kasei is used as the ink, and the thickness thereof is approximately 30 to 50 μ.
The ink described above is UV curable.

When forming the underpainted pattern layer 13 by screen printing, a decorative ink is used.

Third step: Slide the mask layer or pattern layer 13 on the coating film 2 to the specified position on the bisque 1 as described above, and then press and rub the coating film 2 with a rubber squeegee from above the cover coat 14. The mask layer or pattern layer 13 is removed from the surface of the bisque 1 as much as possible.
A stabilizing transfer is produced on the surface of the bisque 1 (FIG. 4) and the cover coat 14 is then removed (FIG. 5).

Fourth step: When the transfer is a sandblasting mask layer 13, sandblasting 21 is performed on the mask layer 13 and its outer periphery to form a three-dimensional pattern 16 using the pattern of the mask layer 13 as a protective film. The outer periphery of the contour portion 17 is smoothed by sandblasting 21 to obtain the three-dimensional pattern product shown in FIG. 6 (FIGS. 5 and 6).

When the transfer is the underpainted pattern layer 13, the bisque 1 is calcined in a furnace at 800°C for 70 to 300 minutes to burn off the residue of the coating film 2 and the cover coat 14 and form the pattern. The layer 13 is baked onto the bisque ware 1, and then a transparent glaze is applied and heated to the temperature of main firing to produce an underglaze product.

(Effects) The present invention includes a preparatory step of forming a coating film of an adhesive solution dissolved in a non-drying solvent on the surface of an unglazed object on which slide transfer is not possible, so printing for slide transfer is not possible. In addition to making it easy to slide the sandblasting mask layer or underpainting pattern layer of the transfer sheet produced by the process to a specified position on the surface of the bisque, and since the coating film is non-drying, the application process and the slide movement process are easy. This allows time to be set between the two steps, making it easier to make arrangements for slide movement. In addition, the coating film described above is a kind of impurity when viewed from the proper path of transfer, but after the slide movement to the designated position, most of it is removed as much as possible with a rubber squeegee. Adhesive layer 1
The adhesive property of 2 prevents it from slipping from the designated position, so the process of removing it causes transfer and securing of the transfer position, and a large amount of sliding movement can be performed industrially, making it suitable for the sandblasting method for unglazed ceramics. It has unprecedented effects, such as three-dimensional sculpture by means of sliding means for underpainting on the skin of unglazed pottery.

[Brief explanation of the drawing]

The accompanying drawings illustrate the method of the present invention, in which Fig. 1 is a perspective view showing an example of an unglazed article coated with a coating film, Fig. 2 is a sectional view of the transfer sheet 15, and Fig. 3 is a slide movement. 4 is a sectional view showing the coating film removed as much as possible using a squeegee, FIG. 5 is a sectional view showing the removal of the cover coat, and FIG. FIG. 2 is a perspective view showing an example of an unglazed pottery with a pattern formed thereon. 1 → Unglazed product, 2 → Coating film, 13 → Sandblasting mask or pattern layer with underpainting, 14 → Cover coat, 15 → Transfer sheet.

Claims (1)

[Claims] 1. A step of forming a coating film of a viscous solution dissolved in a non-drying solvent on the surface of an unglazed object having water absorption properties, and sandblasting by screen printing on the water-soluble glue layer of the water-absorbing sheet.・A transfer sheet printed with a mask layer or underpainting pattern layer and further provided with a removable cover coat is soaked in water, excess adhering moisture is removed, and the mask layer or underpainting is separated from the base sheet together with the cover coat by a sliding method. A process of sliding the pattern layer to a designated position on the coating film of the unglazed object, and then removing as much of the coating film as possible from the surface of the unglazed object using a rubber squeegee to remove the mask layer or the underpainted pattern layer. A slide transfer method for transferring a transfer sheet, on which a sandblasting mask layer or an underpainted pattern layer is formed by screen printing, to an unglazed object, which is characterized by stabilizing the surface of the object.