JPH02102042A - Sheet for forming fired pattern and label for firing - Google Patents

Abstract

PURPOSE:To provide curved surface adhesive properties, easily temporary adherence to a material to be coated and simple adhesive properties by composing of a laminated structure of a glass powder-containing layer, an adhesive layer and a combustible base material layer, and allowing the base material layer to be present on the surface or/and the interior of the glass powder-containing layer of the structure. CONSTITUTION:A polyester film is coated, for example, with slurry obtained by uniformly mixing lead borosilicate glass powder, zirconia powder, polyisobutylmethacrylate, dibutylphthalate, toluene in a ball mill, dried to form a glass powder-containing layer 2, and a polyisobutylmethacrylate film 1 is laminated thereon. Then, the film is peeled, acrylic adhesive 3 adhered onto a separator 4 adheres to the exposed glass powder-containing layer, thereby obtaining a sheet for forming a fired pattern. A sheet segment having a predetermined size is cut out from the sheet, a predetermined bar code pattern is formed through a heat transfer type printer and an ink sheet, thereby obtaining a label for firing.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a sheet for forming a fired pattern, which is composed of a laminated structure of a glass powder-containing layer, an adhesive layer, and a combustible base material layer, and has excellent damage resistance, and the like. Regarding the firing label.

Conventional technology As the production system changes to high-mix, low-volume production, the conventional fired ceramics and metals are no longer used as identification labels used to manage products made of metal, glass, fired ceramics, semi-finished products, parts, etc. When using a substrate type made of a hollow body, there are problems such as the problem of time required for fixing with screws, etc., the problem of lack of adhesion to curved surfaces due to rigidity, the problem of lack of flexibility in forming identification labels due to patterning on site, etc. Because of this, a fired pattern forming sheet has been proposed in which glass powder is made into a sheet using a wax-based binder. This is made so that the fired body adheres to the adherend by firing, and has flexibility and flexible label forming properties, and the fired body has excellent scratch resistance, heat resistance, and chemical resistance.

Problems to be Solved by the Invention However, such fired pattern forming sheets have poor adhesion to adherends, and require temporary attachment using a separate adhesive or adhesive, resulting in poor adhesive properties. was there. In addition, it is easily damaged and cracks or chips occur during pattern formation or temporary attachment to an adherend, resulting in poor handling, which is a fatal problem in practical terms.

Means for Solving the Problems As a result of extensive research in order to overcome the above-mentioned problems in baked pattern forming sheets, the present inventors have found that by adding an adhesive layer and a combustible base material layer for reinforcement. The inventors have found a way to achieve this objective and have come up with the present invention.

In the conventional method of attaching adhesive, etc. during temporary attachment, we have experienced many cases in which the fired sheet was deformed due to combustion of the attached adhesive, etc. during firing, so it is difficult to further add such a flammable base material layer. It was unexpected that this did not cause any trouble in firing.

An object of the present invention is to provide a sheet for forming a fired pattern and a label for firing using the same.

The fired pattern forming sheet includes a glass powder-containing layer containing glass powder and a resin binder, an adhesive layer,
It consists of a laminated structure of combustible base material layers, and the combustible base material layer is the surface of the glass powder-containing layer in the laminated structure, or/
and in the case where the glass powder-containing layer has a pattern made of heat-resistant ink, a combustible base material layer is present on the glass powder-containing layer having the pattern. .

On the other hand, the firing label is characterized by forming a heat-resistant ink or a pattern consisting of holes or irregularities on the above-mentioned sheet for forming a firing pattern, or punching out the sheet for forming a firing pattern. .

By action firing, the sheet for forming a fired pattern is turned into a fired body while preserving the pattern or form imparted to it by heat-resistant ink, holes or uneven engraving, and punching, and the molten glass component functions as an adhesive and is fired. Automatically fixes the body to the adherend. When the sheet for forming a fired pattern contains components remaining after firing other than glass powder, it is incorporated into the fired body to form a fired pattern with excellent heat resistance, scratch resistance, and chemical resistance. Even when a pattern of heat-resistant ink is formed on the combustible base material layer provided on the outer surface of the glass powder-containing layer, it is possible to obtain a fired body in which the pattern is preserved.

On the other hand, the baked pattern forming sheet is soft or flexible and has curved surface adhesiveness, and can be easily temporarily attached to an adherend based on the adhesive layer, and has simple adhesiveness. In addition, a pattern or identification form can be applied as needed by an appropriate printing method such as an engraving method, a punching method, or a thermal transfer printer.

Furthermore, it is reinforced with a combustible base material layer and has excellent breakage resistance, and is difficult to crack or chip when applying a pattern or shape or temporarily attaching, and is excellent in handling.

Exemplification of Constituent Elements of the Invention The fired pattern forming sheet of the present invention comprises a laminated structure of a glass powder-containing layer, an adhesive layer, and a combustible base material layer. Examples of its structure are shown in FIGS. 1-4.

1 is a combustible base material layer, 2 is a glass powder-containing layer, and 3 is an adhesive layer. Note that 4 is a separator that covers and protects the outer surface of the adhesive layer 3, and 5 is a pattern layer made of heat-resistant ink. The separator 4 is peeled off when the fired pattern forming sheet is temporarily attached to an adherend.

The combustible base material layer 1 is formed so as to be burnt out during firing, and is usually formed of a combustible film, woven fabric, nonwoven fabric, paper, coating layer, or the like. There are no particular limitations on the combustible bottom material. Generally, hydrocarbon resins, vinyl or styrene resins, acetal resins, butyral resins, acrylic resins, polyester resins, urethane resins,
Cellulose resin or the like is used. The thickness of the combustible base material layer is 5 to 200%, particularly 1O to 50%, of the glass powder-containing layer.
is appropriate. If it is too thin, the reinforcing effect will be poor, and if it is too thick, it will cause firing problems such as poor appearance of the fired product.

The arrangement of the combustible base material layer 1 in the laminated structure is based on the outer surface of the glass powder-containing layer 2 with or without the pattern layer 5 made of heat-resistant ink (see FIGS. 1 and 3), or on the outer surface of the glass powder-containing layer 2 (see FIGS. 2 and the adhesive layer 3 (FIG. 2) or inside the glass powder-containing layer 2 (FIG. 4). Even when a pattern made of heat-resistant ink is formed on the combustible base layer 1 disposed on the outer surface of the combustible base material layer 1, a fired body that preserves the pattern can be obtained.

The glass powder-containing layer 2 is formed by containing glass powder so that its residue is fixed to the adherend by firing.

The glass powder used is one that softens or melts at a predetermined firing temperature and adheres to the adherend.

Therefore, any known glass powder can be used. The firing temperature may be determined as appropriate depending on the heat resistance of the adherend. Generally, when the firing temperature is 400 to 600°C, lead glass-based materials are preferably used. 500
When the temperature is between 1000°C and 1000°C, lead borosilicate glass or soda glass is preferably used. When the temperature is 900°C or higher, particularly from 1000 to 1200°C, silicate glass or quartz glass is preferably used.

The glass powder-containing layer is formed as an agglomerated layer of a resin binder of components remaining after firing, such as glass powder. The firing residual component used may be only glass powder. In general,
Other ingredients are used in combination. Other components used are generally inorganic powders and fibers made of ceramics, metals, alloys, oxides thereof, and the like. During firing, components remaining after firing other than the glass powder are retained in the softened or molten glass powder and incorporated into the fired body.

The composition of the firing residual component may be determined as appropriate depending on the purpose of use. When the firing temperature is low or when a fired product with a smooth surface is desired, it is preferable to use a large amount of glass powder with a low melting point.

When the firing temperature is high or when the surface smoothness of the fired body is not required, a large amount of firing residual components other than glass powder may be used. Generally, 1 to 100% by weight of glass powder, especially 1 to 97% by weight, preferably 10 to 95% by weight, 99 to 0% by weight of other firing residual components, especially 99 to 3% by weight,
Preferably it is 90 to 5% by weight. Each firing residual component used may be one type, or two or more types may be used. The size of the particles is generally powder with a particle size of 0.1 to 20 νm, and fibers with the same diameter and length of 1001701 mm or less, but are not limited to these.

Note that a coloring agent may be used when a good contrast with the adherend is desired, such as when the intended use is an identification label. Pigments or fillers are suitable as coloring agents.

Examples of commonly used pigments or fillers include whitened substances such as silica, calcium carbonate, titanium oxide, zinc white, zirconia, calcium oxide, alumina, carbonates and nitrates that become oxides when oxidized below the firing temperature. , white substances such as metal compounds such as sulfates, metal ions such as iron, chromium, steel, gold, and selenium, such as manganese oxide,
Red materials such as alumina, chromium oxide, tin oxide, iron oxide, cadmium sulfide, selenium sulfide, copper, manganese, cobalt,
Blue substances containing metal ions such as iron, such as cobalt oxide, zirconia/vanadium oxide, chromium oxide, divanadium pentoxide, etc.; containing metal ions such as iron, copper, manganese, chromium, and cobalt, such as chromium oxide and oxide. Examples include black substances such as cobalt, iron oxide, and manganese oxide.

On the other hand, the resin binders used for agglomerating the residual components after firing include hydrocarbon resins, vinyl-based or styrene-based resins,
Examples of flammable resins include acetal resins, butyral resins, acrylic resins, polyester resins, urethane resins, and cellulose resins. Hydrocarbon resins,
Acetal resins, acrylic resins, and cellulose resins are preferably used. Among these, acrylic resins are preferred.

If the resin binder and the combustible base material layer have significantly different properties such as thermal decomposition temperature, the fired product is likely to suffer from poor appearance such as foaming or deformation. Preferably, it is made of resin. The amount of the resin binder used may be appropriately determined depending on the specific gravity and particle size of the components remaining after firing, such as the glass powder used. Generally, 5 to 50 parts by weight per 100 parts by weight of glass powder is suitable.

In addition, when forming the glass powder-containing layer, appropriate additives such as plasticizers and dispersants may be added as necessary.

The glass powder-containing layer can be formed, for example, by mixing the forming components using a solvent or the like in a ball mill, spreading the mixed solution in an appropriate manner on a support base material such as a separator, and drying it. .

When a combustible base material layer forming material such as a combustible film is used as the supporting base material, there is an advantage that the step of laminating the combustible base material layer and the glass powder-containing layer by a lamination method or the like can be omitted. As for the developing method, the doctor blade method is preferable in terms of layer thickness control accuracy. It is preferable to perform a sufficient defoaming treatment such as by using an antifoaming agent in combination so that no air bubbles remain in the spreading layer. The thickness of the glass powder-containing layer may be determined as appropriate depending on the intended use. Generally, 1OUIIl to 5
It is assumed to be mm. Note that the combustible base material layer may be formed by coating a resin liquid or the like on a glass powder-containing layer formed in advance.

The adhesive layer 3 in the baking pattern forming sheet of the present invention is formed so as to be burned away during baking.

Therefore, the adhesive layer-forming agent to be used may be one that has adhesive strength that allows temporary attachment to the adherend and is burnt out by thermal decomposition or the like at a temperature below the firing temperature. Generally, rubber-based adhesives, acrylic-based adhesives, 1-nylalkyl-ester-based adhesives, etc. are used. Among them, natural rubber (synthetic natural rubber), butyl rubber, polyisoprene rubber, styrene-butadiene rubber,
A rubber-based adhesive consisting of a single polymer such as styrene/isoprene/styrene block copolymer rubber or styrene/butadiene/styrene block copolymer rubber, or 100 parts by weight of such polymer, petroleum-based resin, terpene-based resin, 10 to 300 parts by weight of a tackifier resin such as rosin resin, xylene resin, coumaron indene resin,
In addition, rubber-based adhesives containing additives such as softeners, anti-aging agents, colorants, and fillers, and acrylic adhesives containing polymers of alkyl esters of acrylic acid or methacrylic acid as a main ingredient, are used. The adhesive layer can be attached by, for example, a method of adhering an adhesive layer provided on a separator, a method of applying an adhesive layer forming agent on the glass powder-containing layer or the combustible base material layer, or the like. The thickness of the adhesive layer may be determined as appropriate depending on the intended use. Generally, 1 to 5
It is assumed to be 00-.

The fired pattern forming sheet of the present invention is used for temporarily adhering to an adherend and firing it, and then fixing the fired body made of the residual component to the adherend during firing.

In that case, a method may also be used in which the object to be adhered is attached to the sheet for forming a fired pattern, and the object is then fired and the object to be adhered is fixed to the object through the fired body of the sheet for forming the fired pattern. Firing may be performed under appropriate heating conditions depending on the glass powder used.

The firing label of the present invention is made of the above-described firing pattern forming sheet provided with a pattern made of heat-resistant ink. Another type of baking label is made of a baking pattern forming sheet with a pattern made of holes or irregularities engraved thereon.

Yet another type of firing label is made by punching out a firing pattern forming sheet into a predetermined shape. Of course, a firing label may be a combination of two or more of the above forms.

As a heat-resistant ink for imparting a pattern to a fired pattern forming sheet, for example, a paste-like ink made by mixing arbitrary components such as glass powder and inorganic pigments with a binder can be directly applied using a conventional screen printing method. It is possible to use a method that has been used for a method or a method for transferring a coating pattern formed on a transfer paper. Furthermore, like the above-mentioned glass powder-containing layer forming agent, one formed using a residual component after firing such as glass powder can also be used. In that case, the appropriate mixed composition is 0 to 95% by weight of glass powder, 100 to 5% by weight of other components remaining after firing, and a binder used as necessary: 5 to 50% by weight of the total components remaining after firing.

The pattern formation method using heat-resistant ink is arbitrary.
The pattern to be formed is also arbitrary. Printed patterns, transfer patterns, picture patterns, barcode patterns, etc. can be created using an appropriate pattern forming method, such as handwriting, coating through a pattern forming mask, transferring a pattern on transfer paper, or using a printer. Any pattern may be formed on the glass powder-containing layer 2 or the combustible base material layer 1 disposed thereon in the fired pattern forming sheet. An ink sheet such as a printing nobon, which is necessary when forming a pattern using a printer such as an XY plotter, wire dot type, thermal transfer type, or impact type, is made of a film, cloth, etc., and is coated with heat-resistant ink using a coating method, an impregnation method, etc. It can be formed by holding it on a supporting base material. The pattern forming method using a printer has the advantage of being able to form appropriate patterns accurately and efficiently.

In addition, when forming identification labels, etc., use a heat-resistant ink made from residual components after firing, such as pigments different from those used in the fired pattern forming sheet, to ensure that the sheet material and pattern have good contrast or color tone in the fired product. It is preferable to use a combination such that a difference is formed.

The method of forming the firing label by engraving a pattern consisting of holes or irregularities on the firing pattern forming sheet is also arbitrary. Moreover, the pattern to be formed is also arbitrary. In addition, regarding the hole pattern, as illustrated in FIG. 5, the hole portion 6 of the sheet S for forming a fired pattern represents the display content, and as illustrated in FIG. Any method may be adopted to represent the display content, such as a method in which the remaining sheet portion 7 other than 6 represents the display content.

Furthermore, as illustrated in FIG. 7, a perforation pattern 8 in the form of a punch is formed on the fired pattern forming sheet S, and finally only the inner portion (shaded area) of the perforation pattern 8 is formed on the adherend. It is also possible to adopt a method in which the This method can be preferably applied, for example, to the formation of barcode patterns, picture patterns, and the like. It is also advantageous in cases where it is difficult to handle it as a punched body because it is easily damaged. It should be noted that the pattern consisting of unevenness can also be used for decorative purposes as well as for forming identification labels such as barcode patterns applied to recognition devices that detect the amount of reflected light.

The step of forming the above-mentioned baking label by imparting a pattern or shape to the baking pattern forming sheet may be performed either before or after the baking pattern forming sheet is temporarily attached to an adherend. In the former case, the label for firing is formed in advance, and there is an advantage that a fine pattern can be applied using an appropriate device. In the latter case, the firing label is formed by processing the firing pattern forming sheet temporarily adhered to the adherend, which has the advantage of being able to provide a concavo-convex pattern during the temporary adhesion process, resulting in excellent processing efficiency, or It has the advantage of excellent pattern preservation, such as being able to prevent deformation of the concavo-convex pattern due to temporary attachment.

The firing label temporarily attached to the adherend is baked at a predetermined temperature to be fixed to the adherend as a fired product with its pattern preserved.

Therefore, such firing labels can be preferably used for painting ceramics, glass products, floating bodies, etc., and for attaching identification labels. In addition, products made of glass, ceramic, metal, etc., transport pallets, especially heat-resistant substrates such as ceramics, prototypes, etc., may be marked with company name, lot number, product name, destination of delivery, country of export, or any other identification symbol, coloring or coloring. It can be preferably used for attaching an identification label consisting of a different pattern, bar code, etc.

In addition, when the adherend is made of unfired ceramic, the firing of the sheet for forming the fired pattern or the label for firing may be combined with the firing or heat treatment of the adherend.

Effects of the Invention According to the fired pattern forming sheet of the present invention, since the combustible base material layer is provided and reinforced, the fired body to be formed is prevented from foaming or deformation, and damage such as cracks and chips is prevented. A pattern can be applied by an ink stamping method, an engraving method, a punching method, etc., without the need for attachment, and it can be temporarily attached to an adherend, making it easy to handle. Moreover, since it has an adhesive layer in advance, it is easy to temporarily attach it to an adherend.

Furthermore, curved adhesion to curved surfaces is easy, and patterns can be applied as needed. In addition, the pattern is excellent in preservation during firing, and the fired product has excellent abrasion resistance, heat resistance, chemical resistance, and excellent adhesion to adherends.

Examples Example 1 80 parts (parts by weight, same hereinafter) of lead borosilicate glass powder,
20 parts of zirconia powder, 15 parts of polyisobutyl methacrylate, 2 parts of dibutyl phthalate, and 40 parts of toluene were uniformly mixed in a ball mill to obtain a slurry, which was coated on a polyester film treated with a release agent and dried to form a thick layer. A glass powder-containing layer having a thickness of approximately 100 μI was formed.

Next, a polyisobutyl methacrylate film having a thickness of 2 On was placed on the glass powder-containing layer, and the film was laminated by passing through a roll heated to 80°C.

Next, the polyester film still adhered to the glass powder-containing layer was peeled off, and an acrylic adhesive with a thickness of about 20 νm attached to the separator was adhered onto the exposed surface of the glass powder-containing layer, and a fired pattern forming sheet was attached. Obtained.

Next, a sheet piece of a predetermined size is cut out from the sheet for forming a baking pattern, a predetermined barcode pattern is formed on the surface of the polyisobutyl methacrylate film using a thermal transfer printer and an ink sheet, and a label for baking is attached. Obtained. The ink sheet is made by coating a polyester film with a heat-resistant ink consisting of a mixed paste of 20 parts of chromium oxide, iron oxide, and cobalt oxide black pigment, 20 parts of paraffin wax, and 60 parts of toluene, and keeping it dry. It is.

The separator was peeled off from the baking label, temporarily attached to an alumina substrate via the exposed adhesive layer, and baked at 500° C. for 30 minutes. Organic components such as polyisobutyl methacrylate and acrylic adhesive were burned out by baking.

As a result of the above, an alumina substrate on which a fired body having a clear black barcode pattern was firmly fixed on a white background was obtained.

Comparative Example 1 Example 1 except that a fired pattern forming sheet was formed without laminating a polyisobutyl methacrylate film, and a barcode pattern was directly formed on the glass powder-containing layer.
A label for firing was obtained according to the method.

When this product was patterned using a thermal transfer method, many cracks were generated, which turned into large cracks when the separator was peeled off from the adhesive layer, and the barcode pattern had already collapsed before firing.

Example 2 An acrylic adhesive with a thickness of approximately 1 hm attached to a separator was adhered onto the surface of the polyisobutyl methacrylate film in a laminate of a glass powder-containing layer and a polyisobutyl methacrylate film formed according to Example 1. A fired pattern forming sheet was obtained.

Next, a sheet piece of a predetermined size is cut out from the sheet for forming a firing pattern, and a barcode pattern made of heat-resistant ink is printed on the surface of the glass powder-containing layer through a mask to obtain a label for firing. Ta. The heat-resistant ink contains chromium oxide, iron oxide, and cobalt oxide black pigments.
20 parts of polyisobutyl methacrylate and 6 parts of toluene
Consisting of 0 parts of mixed paste.

The separator was peeled off from the baking label, temporarily attached to a glass plate via the exposed adhesive layer, and baked at 500° C. for 30 minutes. The organic components were burned out by firing.

As a result of the above process, a glass plate was obtained in which a fired body having a clear pattern of a fired body having a clear pattern of a black barcode pattern firmly adhered to a white background was firmly adhered to the glass plate.
I got a lath board.

Comparative Example 2 Example 2 except that a fired pattern forming sheet was formed without laminating a polyisobutyl methacrylate film, and a barcode pattern was printed directly on the glass powder-containing layer.
A label for firing was obtained according to the method.

In this product, cracks occurred when the separator was peeled off from the adhesive layer, and the bar code on the fired product was misaligned.

Example 3 A sheet for forming a firing pattern having a laminated structure having a polyisobutyl methacrylate film was formed on the pattern-printed glass powder-containing layer of the firing label of Comparative Example 2 according to Example 2, and a fired pattern sheet cut out from this sheet was formed according to Example 2. The label was fired. The organic components were burned out by firing.

As described above, a black barcode pattern 4 was formed on a white background.A mark having a predetermined uneven pattern was pressed on a sheet piece (30 m + 5 x 50 mm) cut out from the baking pattern forming sheet obtained in Example 1 to form a baking label. I got it.

The separator was peeled off from the baking label, temporarily attached to a glass plate via the exposed adhesive layer, and baked at 500° C. for 30 minutes.

As a result of the above process, a glass plate was obtained in which a white fired body with a suppressed pattern well preserved was firmly fixed.

Comparative Example 3 A firing label was obtained and fired in the same manner as in Example 4, except that the sheet for forming a firing pattern obtained in Comparative Example 1 was used in place of the sheet for forming a firing pattern obtained in Example 1.

In this case, when the separator was peeled off from the adhesive layer, it broke at the large depression part of the concavo-convex pattern.

Example 5 The sheet for forming a firing pattern obtained in Example 3 was punched out into labels to obtain labels for firing, and the sheets were fired in accordance with Example 2.

As a result, a glass plate was obtained in which a fired body having a clear black barcode pattern on a white background was firmly fixed.

Comparative Example 4 A firing label was punched out according to Example 5, except that the firing pattern forming sheet obtained in Comparative Example 3 was used instead of the firing pattern forming sheet obtained in Example 3, and it was fired. .

Due to breakage at the edges that occurred during punching, several nicks were observed on the peripheral edges of the fired product.

Example 6 A 2 hm thick polyisobutyl methacrylate film was placed on the glass powder-containing layer with a thickness of about 50 ua+ formed according to Example 1, and a polyisobutyl methacrylate film with a thickness of about 50 μ-
A glass powder-containing layer of 100% was placed and laminated by passing through a roll heated to about 100°C. Next, the polyester film adhered to the glass powder-containing layer was peeled off, and an acrylic pressure-sensitive adhesive having a thickness of about 20 μm was adhered onto the surface of the glass powder-containing layer to obtain a fired pattern forming sheet.

Punching the sheet for forming a fired pattern into a predetermined shape,
The separator was peeled off from the baking label made of the obtained punched body and temporarily attached to a glass plate via the adhesive layer, the polyester film remaining on the outer surface of the glass powder-containing layer was peeled off, and the label was baked at 500° C. for 30 minutes.

As a result of the above process, a glass plate was obtained in which the white fired body was firmly fixed while preserving its shape well.

Example 7 A sheet piece (30sa x 50+m) cut out from the baking pattern forming sheet obtained in Example 1 was temporarily attached to a glass plate, and then a mark having a predetermined uneven pattern was pressed thereon to obtain a baking label.

Subsequently, the glass plate was fired in accordance with Example 4, and a white fired body with the suppressed pattern well preserved was firmly adhered to the glass plate.

[Brief explanation of the drawing]

1, 2, 3, and 4 are cross-sectional views of structural examples of sheets for forming fired patterns, and FIGS. 5, 6, and 7 are explanatory views of examples of hole pattern formation. 1: Flammable base material layer 2 Glass powder-containing layer 3: Adhesive layer 4: Separator 5: Pattern layer made of heat-resistant ink S: Sintered pattern forming sheet 6: Hole portion 7: Sheet remaining portion 8: Perforation line pattern patent Applicant Nitto Denko Corporation

Claims (1)

[Claims] 1. Consisting of a laminate structure including a glass powder-containing layer containing glass powder and a resin binder, an adhesive layer, and a combustible base material layer, the combustible base layer is A fired pattern forming sheet characterized by being present on the surface and/or inside of a glass powder-containing layer. 2. A label for firing, characterized in that the sheet for forming a firing pattern according to claim 1 is provided with a pattern made of heat-resistant ink. 3. A label for firing, characterized in that the sheet for forming a firing pattern according to claim 1 is provided with a pattern consisting of holes or irregularities. 4. A label for firing, comprising a punched body of the sheet for forming a firing pattern according to claim 1. 5. Consisting of a laminated structure of a glass powder-containing layer containing glass powder and a resin binder, an adhesive layer, and a combustible base layer, the glass powder-containing layer having a pattern made of heat-resistant ink; A sheet for forming a fired pattern, characterized in that a combustible base material layer exists on a glass powder-containing layer. 6. A label for firing comprising a punched body of the sheet for forming a firing pattern according to claim 5.