JPH0737121B2 - Sheet for forming firing pattern and label for firing - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Field of the Invention The present invention has a heat-resistant ink pattern in a laminated structure of a glass powder-containing layer, an adhesive layer, and a flammable substrate layer, and has excellent damage resistance. The present invention relates to a baking pattern forming sheet and a baking label made of the same.

Conventional technology Amid the transition of the production system to high-mix low-volume production, products made of metal, glass, or fired ceramics, or fired ceramics, metal, or enamels used as identification labels for managing semi-finished products or parts When using a substrate type consisting of a body, etc., there are problems such as fixing work due to screwing etc., problem of lack of curved surface fixability due to rigidity, problem of lack of flexibility in forming identification label due to patterning at the site etc. Therefore, a firing pattern forming sheet has been proposed in which glass powder is used as a sheet using a wax binder. This is one in which the fired body is fixed to the adherend by firing, and it has flexibility and a flexible label forming property, and the fired body is excellent in scratch resistance, heat resistance, and chemical resistance.

Problems to be Solved by the Invention However, such a fired pattern forming sheet has poor adhesion to an adherend, and it is necessary to temporarily use a pressure-sensitive adhesive or an adhesive separately, which is inferior in simple adhesion. was there. Further, there is a practically fatal problem that it is easily damaged, and cracks or chips occur during pattern formation or temporary attachment to an adherend, resulting in poor handleability.

Means for Solving the Problems The present inventors have conducted extensive studies in order to overcome the above-mentioned problems in the sheet for forming a fired pattern, and as a result, by providing an adhesive layer and reinforcing the layer by adding a flammable substrate layer. The inventors have found that the object can be achieved and completed the present invention.

In the conventional method of attaching the adhesive etc. at the time of temporary attachment, it was often experienced that the fired sheet was deformed due to the combustion of the attached adhesive etc. at the time of firing. It was unexpected that the firing did not cause any trouble.

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

The sheet for forming a firing pattern is composed of a laminated structure of a glass powder-containing layer having a glass powder and a resin binder and a thickness of 50 μm or more, an adhesive layer, and a non-heat-shrinkable flammable substrate layer, The flammable substrate layer is present on the surface of and / or inside the glass powder-containing layer in the laminated structure, and has a pattern made of heat-resistant ink on the visible side of the label rather than the glass powder-containing layer. A sheet for forming a firing pattern by firing, wherein the label for firing comprises a punched form of the sheet for forming a firing pattern described above. Is a heat-resistant ink, engraving of holes or irregularities, and a pattern or morphology given as punching is preserved and made into a fired body, at which time the molten glass component is an adhesive. Automatically securing the firing function member to an adherend by. When the baking pattern forming sheet contains a baking residual component other than the glass powder, it is incorporated into the baking body to form a baking pattern having excellent heat resistance, abrasion resistance and chemical resistance. Even when a pattern of the heat-resistant ink is formed on the flammable base material layer provided on the outer surface of the glass powder-containing layer, a fired body that preserves the pattern can be obtained.

On the other hand, the baking pattern forming sheet is flexible or flexible, 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 an identification form can be arbitrarily given by an engraving method, a punching method, an appropriate printing method such as a thermal transfer printer, or the like. Furthermore, it is reinforced with a flammable base material layer and has excellent damage resistance, and cracks and chips are unlikely to occur at the time of applying a pattern or form or during temporary attachment, and is excellent in handleability.

Examples of constituent elements of the invention: The sheet for forming a firing pattern of the present invention comprises a glass powder-containing layer, an adhesive layer, and a non-heat-shrinkable flammable base material layer laminated structure provided with a pattern made of a heat-resistant ink. Consists of forming a label for firing. First structural example
~ Shown in FIG. However, in FIGS. 1, 2, and 4, the pattern layer made of the heat-resistant ink is omitted because it is provided on the flammable substrate layer 1 or the glass powder-containing layer 2 on the surface of the sheet. 1 is a flammable substrate layer, 2 is a glass powder containing layer, and 3 is an adhesive layer. In addition, 4 is the adhesive layer 3
And 5 is a pattern layer made of heat resistant ink. The separator 4 is peeled off when the firing pattern forming sheet is temporarily attached to an adherend.

The flammable base material layer 1 is formed of a non-heat-shrinkable material that burns off during firing, and is usually a flammable film, woven fabric, non-woven fabric,
It is formed of paper, a coating layer, or the like. The non-heat-shrinkable combustible forming material is not particularly limited. Generally, hydrocarbon-based resins, vinyl-based or styrene-based resins, acetal-based resins, butyral-based resins, acrylic-based resins, polyester-based resins, urethane-based resins, fibrin-based resins and the like are used. The thickness of the flammable substrate layer is 5 to that of the glass powder-containing layer.
200%, especially 10-50% is suitable. If it is too thin, the reinforcing effect is poor, and if it is too thick, firing problems such as poor appearance of the fired product are induced.

Arrangement of the flammable base material layer 1 in the laminated structure is performed by the outer surface of the glass powder containing layer 2 (FIGS. 1 and 3) with or without the pattern layer 5 made of heat resistant ink, or the glass powder containing layer. 2 and the adhesive layer 3 (FIG. 2), or at least one place inside the glass powder-containing layer 2 (FIG. 4), and if necessary, at two or more places. Even when a pattern made of heat-resistant ink is formed on the flammable substrate layer 1 arranged on the outer surface of the glass powder-containing layer 2, it is possible to obtain a fired body that preserves the pattern.

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

As the glass powder, one that is softened or melted at a predetermined firing temperature and fixed to an adherend is used. Therefore, any known glass powder can be used. The firing temperature may be appropriately determined depending on the heat resistance of the adherend. Generally, when the firing temperature is 400 to 600 ° C., a lead glass type is preferably used. In the case of 500 to 1000 ° C., lead borosilicate glass type and soda glass type are preferably used. When the temperature is 900 ° C. or higher, especially when the temperature is 1000 to 1200 ° C., a silicate glass type or a quartz glass type is preferably used.

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

The composition of the baking residual component may be appropriately determined according to the purpose of use. When the firing temperature is low, or when a fired body having a smooth surface is desired, it is preferable to use glass powder having a low melting point frequently.
When the firing temperature is high or when the smoothness of the surface of the fired body is not required, firing residual components other than glass powder may be used in large amounts. Generally, 1 to 100% by weight of glass powder, especially 1
To 97% by weight, preferably 10 to 95% by weight, other baking residual components 99 to 0% by weight, especially 99 to 3% by weight, preferably 90
~ 5% by weight. Each of the firing residual components used may be of one type or of two or more types. The size is generally powder having a particle size of 0.1 to 20 μm and fibers having the same diameter and a length of 100 μm or less, but the size is not limited to this.

A coloring agent may be used when a good contrast with the adherend is desired, such as when the intended purpose is an identification label. Pigments or fillers are suitable as colorants.

Examples of commonly used pigments or fillers include whitening materials such as silica, calcium carbonate, titanium oxide, zinc oxide, zirconia, calcium oxide, alumina, carbonates and nitrates which are oxidized to such oxides at a firing temperature or lower. ,
White materials such as metal compounds such as sulfates, iron, chromium, copper,
Gold, containing metal ions such as selenium, for example, manganese oxide / alumina, chromium oxide / tin oxide, iron oxide, cadmium oxide / red materials such as selenium sulfide, copper, manganese, cobalt, containing metal ions such as iron, for example, Blue matter such as cobalt oxide, zirconia / vanadium oxide, chromium oxide / divanadium pentoxide, and metal ions such as iron, copper, manganese, chromium, and cobalt, such as chromium oxide / cobalt oxide / iron oxide / manganese oxide Examples include black ones.

On the other hand, as the resin binder used for agglomeration of the residual components of baking, hydrocarbon-based resin, vinyl-based or styrene-based resin,
Examples of the flammable resin include acetal resin, butyral resin, acrylic resin, polyester resin, urethane resin and fibrin resin. Hydrocarbon-based resins, acetal-based resins, acrylic-based resins, and fibrin-based resins are preferably used from the viewpoint of calcination processability due to good flammability or thermal decomposability. Above all, acrylic resins are preferred. When the characteristics such as the thermal decomposition temperature of the resin binder and the flammable base material layer are significantly different, appearance defects such as foaming and deformation are likely to occur in the fired body, and from this point the resin binder and the flammable base material layer are of the same type. It is preferably made of resin. The amount of the resin binder used may be appropriately determined depending on the specific gravity, particle size, etc. of the residual component of baking such as glass powder to be used. In general,
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 a plasticizer and a dispersant may be blended as necessary.

The glass powder-containing layer can be formed by, for example, a method of mixing the forming components with a solvent such as a ball mill, and spreading the mixed solution on a supporting base material such as a separator in an appropriate manner and drying it. . When a material for forming a flammable substrate layer such as a flammable film is used as the supporting substrate, there is an advantage that the step of laminating the flammable substrate layer and the glass powder containing layer by a laminating method can be omitted. The development method is preferably a doctor blade method from the viewpoint of layer thickness control accuracy.
It is preferable to perform a sufficient defoaming treatment so that air bubbles do not remain in the spreading layer by using an antifoaming agent together. The thickness of the glass powder-containing layer is 50 μm or more from the viewpoint of obtaining a label for firing, and is usually 5 mm or less. If the thickness is less than 50 μm, as will be described later, when the label for firing is fired, a difference in color tone between the sheet material as the fired body of the glass powder-containing layer and the firing pattern of the heat-resistant ink is unlikely to occur. It is said that
The flammable base material layer may be formed by applying a resin liquid or the like onto the glass powder-containing layer that has been formed in advance.

Adhesive layer 3 in the sheet for forming a baked pattern of the present invention
Are formed so as to be burned off during firing. Therefore, the adhesive layer forming agent used has an adhesive force capable of being temporarily attached to an adherend,
Any material can be used as long as it can be burned off by thermal decomposition at a firing temperature or lower. Generally, rubber-based adhesives, acrylic-based adhesives,
A vinyl alkyl ether-based adhesive or the like is used. Among them, natural rubber (synthetic natural rubber), butyl rubber, polyisoprene rubber, styrene / butadiene rubber, styrene / isoprene / styrene block copolymer rubber, styrene /
A rubber-based adhesive made of a polymer such as butadiene / styrene block copolymer rubber, or 100 parts by weight of such a polymer, petroleum-based resin, terpene-based resin, rosin-based resin, xylene-based resin, coumarone-indene-based resin 10 to 300 parts by weight of a tackifying resin such as the above, a rubber-based adhesive obtained by adding other compounding agents such as a softening agent, an antioxidant, a colorant, and a filler, and a polymer of an alkyl ester of acrylic acid or methacrylic acid. Acrylic adhesive or the like which is the main component is used. The adhesive layer can be attached by, for example, a method of attaching an adhesive layer provided on a separator or a method of applying an adhesive layer forming material on a glass powder-containing layer or a flammable substrate layer. The thickness of the adhesive layer may be appropriately determined according to the purpose of use. Generally, it is set to 1 to 500 μm.

The fired pattern forming sheet of the present invention is used for the purpose of temporarily adhering to an adherend and firing it, and fixing the fired body consisting of the remaining components to the adherend under firing. In the case of forming a label for firing, in this case, an adherend is attached to a sheet for forming a firing pattern, and this is fired to attach the adhered matter through the fired body of the sheet for forming a firing pattern. You can also take a method of sticking to the body. Firing may be performed under appropriate heating conditions depending on the glass powder used and the like.

The sheet for forming a fired pattern of the present invention comprises a fireproof label having a pattern made of a heat-resistant ink on the side closer to the viewer than the glass powder-containing layer. On the other hand, the firing label is formed by punching out the sheet, and if necessary, engraved with a pattern of holes or irregularities. The pattern made of the heat-resistant ink can be applied to the punched body of the sheet, and therefore the firing label can be obtained as the punched body of the sheet for forming a fired pattern, or before the application of the heat-resistant ink pattern. It is also possible to punch a sheet and apply a heat-resistant ink pattern to the punched body to obtain a label for firing.
Hereinafter, the sheet or the punched body before applying the pattern of the heat resistant ink is referred to as a baking sheet.

As the heat-resistant ink for imparting a pattern to the baking sheet, for example, a paste-like ink obtained by mixing an optional component such as glass powder and an inorganic pigment with a binder,
A direct coating method such as a conventional screen printing method or a method of transferring a coating pattern formed on a transfer paper can be used. Further, like the above-mentioned forming agent for the glass powder-containing layer, the one formed by using the residual component of baking such as glass powder may be used. In that case, the mixed composition is 0-95% by weight of glass powder, and 100-
5% by weight, a binder used as required: 5 to 50% by weight of the total components remaining in the firing are suitable.

The pattern formation method using heat-resistant ink is arbitrary,
The pattern to be formed is also arbitrary. Print pattern, transfer pattern, pattern pattern, barcode pattern, etc. by an appropriate pattern forming method such as a handwriting method, a coating portion method through a pattern forming mask, a method of transferring a pattern provided on a transfer paper, a forming method by a printer, etc. Any pattern may be formed on the glass powder-containing layer 2 in the firing pattern forming sheet or on the flammable base layer 1 arranged thereon. Printers such as XY plotters, ink dots such as printing ribbons, which are necessary when forming patterns by wire dot type or thermal transfer type or impact type, can be used by applying heat-resistant ink from film or cloth by coating method, impregnation method, etc. It can be formed by holding it on a supporting substrate. The pattern forming method using a printer has an advantage that an appropriate pattern can be formed accurately and efficiently.

When forming an identification label, etc., a heat-resistant ink formed by a baking residual component such as a pigment different from the baking sheet is used, and the sheet material and the pattern have good contrast or color difference in the baked body. It is preferable that the combination is such that The expression of the difference in color tone between the sheet material and the pattern in the fired body is greatly improved by setting the thickness of the glass powder-containing layer to 50 μm or more as described above.

A method for forming a baking label, which is formed by engraving a pattern having holes or irregularities on the baking pattern forming sheet or the baking sheet, is also arbitrary. The pattern to be formed is also arbitrary. In the hole pattern, as shown in FIG. 5, the hole portion 6 in the baking pattern forming sheet S represents the display content, and as shown in FIG. 6, the hole portion in the baking pattern forming sheet S. A method of expressing any display content, such as a method in which the remaining sheet portion 7 other than 6 represents the display content, may be adopted. Furthermore, as illustrated in FIG.
A method is adopted in which a hole-line pattern 8 is formed on the firing pattern forming sheet S, and finally, only the inner portion (hatched portion) of the hole-line pattern 8 is left on the adherend. Good. This method can be preferably applied to the formation of a bar code pattern, a picture pattern, or the like. In addition to the case of the decoration purpose, the pattern having the unevenness can be used for forming an identification label such as a bar code pattern applied to a reflected light amount detection type recognition device.

The step of forming a pattern or form on the baking sheet or the baking pattern forming sheet to form the above-mentioned baking label may be performed before or after temporarily attaching the baking sheet or the baking pattern forming sheet to an adherend. It may be.
In the former case, the label for firing is formed in advance, and there is an advantage that a fine pattern can be applied by using an appropriate device. In the latter case, the baking sheet or the baking pattern forming sheet temporarily adhered to the adherend is processed to form the baking label, and the concavo-convex pattern can be provided under the temporary adhesion process to improve the processing effect. There is an advantage that it is excellent in the preservation of the pattern such that it is possible to prevent deformation of the uneven pattern due to temporary attachment.

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

Therefore, such a baking label can be preferably used for painting on ceramics, glass products, enamel, etc., and for providing an identification label. In addition, products made of glass, ceramics, metal, etc., or transportation pallets, especially heat-resistant substrates such as ceramics and prototypes, etc., company name, lot number, product name, delivery destination, export country, other arbitrary identification symbol, coloring or color It can be preferably used for giving an identification label composed of another pattern, a bar code or the like.

When the adherend is made of unfired ceramic, the firing of the firing pattern forming sheet or the firing label may be combined with the firing or heat treatment of the adherend.

EFFECTS OF THE INVENTION According to the firing pattern forming sheet of the present invention, since the flammable base material layer is provided and reinforced, the fired body to be formed is prevented from foaming or deformation, and is accompanied by damage such as cracking or chipping. It is possible to apply a pattern by an ink imprinting method, an engraving method, a punching method, and the like, and it can be temporarily attached to an adherend, and is excellent in handleability. Further, since it has an adhesive layer in advance, it is excellent in the ease of temporary attachment to the adherend.

Further, it is easy to adhere the curved surface to the curved surface and the like, and the pattern can be added arbitrarily. In addition, the pattern retainability during firing is excellent, and the fired body is also excellent in scratch resistance, heat resistance, chemical resistance, and adhesion to adhesion resistance.

Examples Example 1 80 parts of lead borosilicate glass-based powder (weight part, the same applies hereinafter), 20 parts of zirconia powder, and polyisobutyl methacrylate 15
Parts, 2 parts of dibutyl phthalate and 40 parts of toluene are uniformly mixed in a ball mill to obtain a slurry, which is coated on a polyester film treated with a release agent and dried to form a glass powder containing layer having a thickness of about 100 μm. Formed.

Next, a 20 μm-thick polyisobutyl methacrylate film was placed on the glass powder-containing layer and passed through a roll heated to 80 ° C. to be laminated.

Then, the polyester film as it was adhered to the glass powder-containing layer was peeled off, and an acrylic pressure-sensitive adhesive having a thickness of about 20 μm attached on the separator was adhered to the exposed surface of the glass powder-containing layer to obtain a baking sheet. .

Next, a sheet of a predetermined size is cut out from the sheet for firing, and a predetermined bar code pattern is formed on the surface of the polyisobutyl methacrylate film through a thermal transfer printer and an ink sheet, and a label for firing (a firing pattern A forming sheet) was obtained. The ink sheet is
A polyester film was coated with a heat-resistant ink composed of a mixed paste of 20 parts of chromium oxide / iron oxide / cobalt oxide black pigment, 20 parts of paraffin wax, and 60 parts of toluene, and dried and held.

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

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

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

This product generated a large number of cracks when a pattern was applied by a thermal transfer method, which became a large crack when the separator was peeled off from the adhesive layer, and the bar code pattern had already collapsed before firing.

Example 2 An acrylic pressure-sensitive adhesive having a thickness of about 15 μm attached to a separator was adhered on the surface of the polyisobutyl methacrylate film in the laminate of the glass powder-containing layer and the polyisobutyl methacrylate film formed according to Example 1. A sheet for firing was obtained.

Next, a sheet piece of a predetermined size is cut out from the above-mentioned sheet for firing, and a bar code pattern made of a heat-resistant ink is printed on the surface of the glass powder-containing layer through a mask to produce a label for firing (formation of a firing pattern). Sheet). The heat-resistant ink is 20 parts of chromium oxide / iron oxide / cobalt oxide black pigment and polyisobutyl methacrylate.
It consists of a mixed paste of 20 parts and 60 parts of toluene.

The separate was peeled off from the above-mentioned label for baking, it was temporarily attached to a glass plate through the exposed adhesive layer, and baked at 500 ° C. for 30 minutes. The organic component was burned off by the firing.

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

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

This product cracked when the separate was peeled from the adhesive layer, and the bar code in the fired body was displaced.

Example 3 A firing pattern forming sheet 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 firing was cut out from this. The label was baked. The organic component was burned off by the firing.

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

Reference Example 1 A sheet having a predetermined concavo-convex pattern was pressed on a sheet piece (30 mm x 50 mm) cut out from the sheet for firing obtained in Example 1 to obtain a label for firing.

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

As described above, a glass plate was obtained in which the white fired body, in which the pressing pattern was well preserved, was firmly fixed.

Comparative Example 3 A firing label was obtained and fired according to Example 4 except that the firing sheet obtained in Comparative Example 1 was used instead of the firing sheet obtained in Example 1.

This product broke at a large concave portion of the concavo-convex pattern when the separator was peeled off from the adhesive layer.

Example 4 The sheet for forming a baking pattern obtained in Example 3 was punched in a label unit to obtain a baking label, and the baking label was processed according to Example 2.

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

Comparative Example 4 A burning label was punched out in the same manner as in Example 5 except that the burning sheet obtained in Comparative Example 3 was used in place of the burning sheet obtained in Example 3, and the sheet was subjected to a burning treatment.

Since this product was fractured at the edge portion during punching, several cracks were found at the peripheral edge of the fired body.

Reference Example 2 A 20 μm-thick polyisobutyl methacrylate film was placed on a glass powder-containing layer having a thickness of about 50 μm formed according to Example 1, and a glass powder-containing layer having a thickness of about 50 μm was further formed thereon. It was placed and passed through a roll heated to about 100 ° C. for lamination. Then, the polyester film adhering to the glass powder containing layer was peeled off, and an acrylic adhesive having a thickness of about 20 μm was adhered to the surface of the glass powder containing layer to obtain a baking sheet.

The above-mentioned sheet for firing is punched into a predetermined shape, the separate is peeled off from the label for firing obtained from the punched product, and the film is temporarily attached to the glass plate via the adhesive layer, and the polyester film remains on the outer surface of the glass powder-containing layer. Peel off 500
It was baked for 30 minutes at ℃.

As described above, a glass plate in which a white fired body having a well-preserved shape was firmly fixed was obtained.

Reference Example 3 A sheet piece (30 mm × 50 mm) cut out from the baking sheet obtained in Example 1 was temporarily attached to a glass plate, and then a mark having a predetermined concavo-convex pattern was pressed on the glass plate to obtain a baking label.

Then, it was fired according to Example 4 to obtain a glass plate to which a white fired body in which the pressing pattern was well preserved was firmly fixed.

[Brief description of drawings]

1, FIG. 2, FIG. 3, and FIG. 4 are cross-sectional views of a structural example of a sheet for forming a baking pattern, and FIGS. 5, 6, and 7 are explanatory views of an example of forming a hole pattern. 1: Flammable substrate layer, 2: Glass powder-containing layer 3: Adhesive layer, 4: Separator 5: Pattern layer made of heat-resistant ink S: Firing pattern forming sheet 6: Hole portion, 7: Sheet remaining portion 8: Hole line pattern

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Megumi Ashida 1-2 1-2 Shimohozumi, Ibaraki City, Osaka Prefecture Nitto Denko Corporation (56) Reference JP-A-63-151694 (JP, A) JP-A-SHO 63-185875 (JP, A) Japanese Patent Publication Sho 55-16080 (JP, B2)

Claims (5)

[Claims] 1. A laminated structure comprising a glass powder-containing layer containing glass powder and a resin binder and having a thickness of 50 μm or more, an adhesive layer, and a non-heat-shrinkable flammable base material layer. For firing, wherein the base material layer is present on the surface and / or inside of the glass powder-containing layer in the laminated structure, and has a pattern made of heat-resistant ink on the visible side of the label rather than the glass powder-containing layer. A firing pattern forming sheet for forming a label. 2. A pattern comprising a heat resistant ink is provided on a glass powder-containing layer, and a flammable substrate layer is present on the glass powder-containing layer having the pattern layer. A sheet for forming a firing pattern. 3. The baking pattern forming sheet according to claim 1, wherein the pattern made of the heat resistant ink is a thermal transfer pattern. 4. A firing label comprising the punched form of the firing pattern forming sheet according to claim 1. 5. The firing label according to claim 4, which has a pattern of holes or irregularities.