JPS6322696A - Heating discharge offset transfer material and method of decorating article by using said material - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] Industrial Application Field The present invention is applicable to decals (decals are techniques for transferring and dyeing patterns written on a special base material to ceramics, glass, wood, metal, etc.) or transfer bodies to articles. Transfer materials used for application to ceramics or glass surfaces, in particular (but not exclusively) transfer materials used to decorate ceramic or glass surfaces by heat emission transfer methods, as well as decals, etc. The present invention relates to a method of applying the method to articles such as ceramics or glass products.

BACKGROUND OF THE INVENTION For many years, direct dye transfer type heat release decals have been considered useful as a supplement to the much older water drop type decals. An important advantage of heat release decals is that they are well suited for use in automated equipment. On the other hand, their drawback is that they cannot be satisfactorily applied to surfaces with complex curves. The reason for this is that the decal has a facing sheet or support. This sheet is attached to the decal when the decal is applied to the object to be decorated, and is later removed. Due to the presence of the backing sheet during application to the article in this manner, it is difficult to successfully apply the shibcurl to the surface of the article. Specific examples of typical direct-use heat-release decals and methods for their use are given in U.S. Pat. Nos. 2.970.076 (Porth); No. 533,822 (Bailey), No. 4,0
No. 68,033 (Meade), No. 4,322,46
No. 7 (Heimbach and Johnson) and No. 4.477,510 (Johnaon and W.
u).

Indirect, i.e., off-dry transfer using a deformable transfer pad to transfer a pattern layer sandwiched between two adhesive layers from its wax-coated support to the article to be decorated. A method is described in US Pat. No. 3,967,021. The two adhesive layers are heat sensitive and tacky over various temperature ranges. Its function is to adhere the printed pattern to the transfer knot 3 and remove it from its support, and then to adhere it to the article to be decorated and remove it from its transfer knot 9.

Since the indirect method uses such a transfer, it is possible to adapt it more flexibly to the shape of the spears of the irises than the direct method.However, this method also has drawbacks. However, since two adhesives having different viscosity temperature ranges are used, the process is time-consuming and is not suitable for mass production.

European patent EP-A-0055393 describes a construction consisting of a support, a thermoplastic I-thermal adhesive layer formed directly on the support, and a pattern layer formed on the adhesive layer. When using this, place the support on a heated platen and press the heated silicone transfer knot 0 in its viscous state onto the pattern layer with the adhesive layer to transfer the adhesive layer) It is made to adhere to the substrate 3 and then peeled off from the support. The transfer pad is then pressed onto the object to be transfer printed to adhere the adhesive layer and also the pattern layer to the object to be decorated. The article is then fired. EP-A-005
The adhesive layer described in No. 5395 is comprised of a complex mixture of wax, oil and thermoplastic release resin.

Such mixtures have very high melt temperatures and high melt viscosities. The inventors of the present invention have found that it is difficult to perform effective transfer suitable for mass production using such a technique. Even a small loss of heat when the transfer knot 9 comes into contact with a cold article becomes a major problem in continuous operation.

This is because the wax t (from the adhesive layer) on the transfer pad increases. If the wax transfers to the unglazed object, wrinkles will appear in the topcoat in the one-time firing system, and pinholes will occur during firing, resulting in overfired deposits, glassy deposits, and darkly colored deposits on the topcoated item. Easy to do.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide an extremely simple transfer material and to develop a system which overcomes the various problems encountered in the use of complex prior art wax-adhesive compositions. The objective is to provide a method that can be operated at low cost.

Means for Solving the Problems The present invention provides a transfer material comprising a support, a pattern layer, a fatty acid ester layer provided between the pattern layer and the support, and an intercalating coating attached to the pattern layer. It is something.

The present invention also uses a heated transfer/jet and a transfer material comprising a support, a pattern layer, a nine fatty acid ester layer disposed between the pattern layer and the support, and a protective coating attached to the pattern layer. The present invention provides a method for use in the decoration of articles, which comprises: (1) separating the pattern layer (a) and at least a portion of the fatty acid ester layer (1) from a support; Temporarily adhere the layer to the transfer pad 0, and at that time, apply that pattern layer to the transfer pad.

and (2) press this fatty acid ester layer onto the article to be decorated to solidify the already molten fatty acid ester layer, thereby transforming the pattern layer into an article. It consists of attaching it to the

Furthermore, the present invention provides a method for using a coated support consisting of a support and a fatty acid ester layer thereon for decorating articles using a heated transfer knot 1, the method comprising: (1) At least a portion of the pattern layer (a) and the fatty acid ester layer provided in advance on the coated support (
1) separating the layers from the coated support and temporarily adhering these layers to the transfer pad such that the pattern layer is located between the transfer layer and the fatty acid ester layer; and (2) It consists of pressing this fatty acid ester layer onto the article to be decorated, solidifying the already molten fatty acid ester layer and thereby adhering the pattern layer to the article.

By providing a fatty acid ester layer between the support and the pattern layer, the pattern layer can be quickly peeled off from the support using a transfer material, and the pattern layer is attached to the article. The transition to is rapid. This is because such a fatty acid ester layer has extremely high heat sensitivity, and therefore, effective peeling and adhesion can be performed even with short contact times in pad-support contact and pad-article contact. Furthermore, the transfer method is economical because it can be carried out by simply heating the transfer pad 0 in most cases. However, in the present invention, heated transfer knots are used.
It is also within the scope of the present invention to heat the transfer material prior to contacting it, such as by using a heated press with the transfer material placed thereon.

Furthermore, the present invention provides a transfer material comprising a support, a pattern layer, a fatty acid ester layer between the support and the pattern layer, and a protective coating attached to the pattern layer, and transfers the heated transfer para-V to the core. The transfer material is brought into contact with the side opposite to the support, the fatty acid ester layer is melted before or during the contacting step, and the transfer material is peeled off from the support to form a protective coating, a pattern layer, and a fatty acid ester layer. the transfer pad to which these layers are attached is pressed onto the article to be decorated, the fatty acid ester layer is solidified, and the pattern layer is attached to the article. , and provides a method for decorating an article, which comprises separating the transfer pad 1 from the article.

In a preferred embodiment of the present invention, it is preferable to heat the transfer pad 0 to a temperature higher than the melting point of the fatty acid ester layer to melt the ester layer during the above-mentioned contact step. In this case,
It is preferred to provide the transfer material with a thermally insulating surface so that heat loss from the transfer nozzle 9 during the contacting step can be minimized.

However, it is also within the scope of this invention to use the transfer material with a heated support surface to reduce heat loss from the transfer pad or to increase the heating effect of the transfer pad.

Specifically, the support is made of clay-covered paper. Also other barrier coated papers such as starch-1PVA-, casei/
- or alkali metal silicate-coated papers may also be used. Further, specifically, the support has a molecular weight of 100 to 200 per unit area.
It has an average weight within the range of 11/m2.

Preferably, the ester layer is made of a fatty acid ester of a monomeric glycol, such as ethylene glycol. The fatty acid is preferably stearic acid, but stearic acid can also be used. Most preferably the fatty acid ester is ethylene glycol monostearate or hasystearate, for example the reaction product of ethylene glycol and stearic acid, or a mixture thereof. Such materials have very low melting points (approximately 60°C) and require less energy to release them from the support. It is very economical to use such materials. Furthermore, these have low melt viscosity and can be quickly and easily peeled off from the support. They do not have adhesive properties when melted, but when cooled they harden rapidly and can be attached to the article to be decorated with very short contact times. The ester layer preferably has an average weight per unit area within the range of 5 to 20 El/m2.

The protective coating may be a conventional coating over the pattern layer, which protects the pattern layer from distortion and retains the print form during the transfer process. The inherent viscosity of such a conventional protective coating when heated is sufficient to temporarily adhere it to a transfer pad, which is usually made of a soft silicone beam. Such transfer para V is slightly sticky to the touch, especially when heated. Typical coatings are typically thermoplastic, such as elastic thermoplastic resins that can completely evaporate during firing.
For example, it is made of acrylic or methacrylic resin). Alternatively or additionally, a similar protective coating may be provided between the pattern layer and the ester layer.

This protective coating is preferably a complete coating that can prevent the fatty acid ester from coming into contact with the transfer pad during use.

Next, the present invention will be explained with reference to the accompanying drawings.

In Figure 1, the transfer material includes a backing sheet or support (1), a fatty acid ester layer (2) formed directly on the support (1), and a pattern layer (3) formed directly on layer (2).
and a Li film covering the pattern layer (3), that is, a storage layer (4).
It consists of

By way of example, the support (1) is composed of a clay-coated paper and the layer (2) is a reaction product of ethylene glycol and stearic acid 1, thus containing a small amount of monostearate moieties. Consists of. Specifically, the ester is Leek Chemi
ca1 company (Leek, 5taffordshire)
) 02+ Ren glycol distearate. Layer (2) can be formed on the support paper by known coating methods, with an average of 8 to 12
It is ti/m2. The pattern layer (3) can be directly formed on the silica fatty acid ester layer (2) by an artistic printing method,
A protective elastic methacrylic resin layer (4) is then provided on the pattern layer. The layer (4) may be formed by covering the outer shell or by covering the whole (that is, the whole),
The ester layer should not come into contact with the transfer pad at all during transfer.

(Figure 2 is for explanation when using), at least 9
A conventional elastic deformable silicone rubber transfer pad (5) heated to 0°C (i.e. substantially above the melting point of the ester) is applied to the transfer material in alignment with layer (4) (Second-b). figure). The heat of the transfer pad (5) removes fat.
Layer (4) when the λ ester melts and lifts the para
Pattern/i (3) A part of the fatty acid ester layer (2) is peeled off from the support (1) (Figure 2-c). At this time, the support (1) is pulled downwards, for example by suction from below, and remains on the perforated platen (7). The platen is made of a heat insulating material in order to minimize heat loss from the platen (5). In this way, the pattern layer (3) is temporarily adhered to the transfer pad' (5) by the adhesiveness of the heated layer (4).

The transfer bag (5) is then pressed onto an unheated article (6) to be decorated with a pattern, for example a ceramic article, a glass article, particularly preferably a primed unglazed article (second step). (Figure 1).The article (6) is fragile) at a low temperature (mostly lower than the melting point of the ester), and the fatty acid ester can be cooled to sufficiently solidify it and be attached to the article (6). As a result, the pattern layer detaches from the transfer head and adheres to the article (6) (Figure 2-e).The transfer vat'' (5) is then reheated to at least 90°C by a suitable method, such as by radiant heating. It is heated and used to pull up the next pattern.

The heating at this time is carried out so that the temperature of the transfer vat (5) during the transfer operation is always higher than the melting point of the fatty acid ester, preferably substantially higher than the melting point of the fatty acid ester. The ester and protective film evaporate and
The pattern layer attached to the article (6) remains.

In another aspect of the present invention, in place of the insertion covering layer,
Alternatively, preferably in addition, a sealant layer similar to the protective trowel coating layer may be provided between the fatty acid ester layer and the pattern layer. A thermoplastic or heat-activatable adhesive layer comprising a suitable thermoplastic resin adhesive, such as those used in direct heat release transfer materials, may be provided over the suppuratoid coating layer.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a transfer material according to the invention. FIG. 2 schematically shows the case where the transfer material of FIG. 1 is used for decoration of ceramic articles. In the figure, (1) is the support, (2) is the fatty acid ester layer, and (3
) is the pattern layer, (4) is the protective coating layer, and (5) is the transfer layer.
Zot 0, (6) is the object to be transferred, (force is a perforated platen. (Other 3 people) 'Otsu' 1° FIGI. f'lG, 2°

Claims (1)

[Claims] 1. Support (1), pattern layer (3), fatty acid ester layer (2) between pattern layer (3) and support (1), and attachment to pattern layer (3) A transfer material comprising a protective coating (4). 2. The transfer material according to claim 1, wherein the ester layer (2) is made of fatty acid ester of glycol. 3. The transfer material according to claim 2, wherein the glycol is ethylene glycol. 4. Claim 1, wherein the fatty acid is stearic acid
The transfer material according to any one of items 1 to 3. 5. The transfer material according to claim 1, wherein the fatty acid ester is ethylene glycol monostearate, distearate, or a mixture thereof. 6. The transfer material according to any one of claims 1 to 5, wherein the protective coating (4) is provided on the pattern layer (3). 7. The transfer material according to any one of claims 1 to 6, wherein the protective coating (4) is a complete coating. 8. A heated transfer pad (
5) A method for decorating an article using (i) (
a) pattern layer (3) previously provided on the coated support (1);
) and (b) at least a portion of the fatty acid ester layer (2) are separated from the support (1) and these layers (2) and (3) are separated from the support (1).
) is temporarily adhered to the transfer pad (5), and at that time, the pattern layer (3
) is placed between the transfer pad (5) and the fatty acid ester layer (2) and (ii) pressing the fatty acid ester layer (2) onto the article to be decorated (6) in its already molten state. A method for decorating an article, comprising solidifying a certain fatty acid ester layer (2) and thereby adhering a pattern layer (3) to the article (6). 9. A support (1), a pattern layer (3), a fatty acid ester layer (2) between the support (1) and the pattern layer (3), and a protective coating (4) attached to the pattern layer. A heated transfer pad (5) is applied to the support of the transfer material (
1), melt the fatty acid ester layer (2) during or during the contacting process, and transfer the transfer pad (
5) is peeled off from the support (1), and the protective coating (4), the pattern layer (3), and at least a part of the fatty acid ester layer (2) are adhered to the pad (5), and then peeled off from the support. Then, the transfer pad (5) to which these layers (2), (3) and (4) are attached is pressed onto the article to be decorated (6) to solidify the fatty acid ester layer (2) and form the pattern layer ( 3)
A method for decorating an article, comprising applying a transfer pad (5) to the article (6) and separating the transfer pad (5) from the article (6). 10. Heat the transfer pad (5) to a temperature equal to or higher than the melting point of the fatty acid ester layer (2) to remove the layer (2) during the contacting step.
9. The method according to claim 9, wherein melting of the material is caused to occur. 11. The method according to claim 9 or 10, wherein the protective coating is provided on the pattern layer. 12. The protective coating (4) is provided over the entire area of the transfer pad (5) to prevent contact between the transfer pad (5) and the ester layer (2). Method.