JPS6012305B2 - How to glaze ceramics - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for forming and forming ceramic frames using special pongee paper.

Recently, in the ceramics industry, in order to prevent the color change of yuzu over time and the dust of heavy metal oxides when applying yuzu, ``for example, sheets made of fibrous material made of heat-melting synthetic fibers and cellulose pulp combined with yuzu. It has been proposed to use pongee paper (pongee paper).

However, the main purpose of this method was to incorporate a large amount of medicine into the sheet, and it did not have sufficient strength as pongee medicine paper. The inventors stated, ``When we fired ceramics made with this medicinal paper, a reduction phenomenon due to organic pulp was observed, and we were unable to produce a stable color tone. The main surface of ceramic raw materials (
It was discovered that when the paper was pasted onto a ceramic base (ceramic base) and dried, wrinkles formed on the surface due to the difference in shrinkage rates between the cuff paper and the ceramic raw material, making it unusable for pongee binding on damp ceramic bases.
On the other hand, other methods are known, such as printing on Japanese paper using pongee or pigment ink and transferring this onto a ceramic base, or directly printing and applying it on a ceramic base like a mimeograph. This is called underglaze or overglaze, and is applied after the ceramic base has been dried or a white base has been fired.

In addition to the above-mentioned drying and baking steps, this method required a step to remove only the paper components. The inventors
In view of these circumstances, after careful consideration, we found that by dispersing yuzu medicine in an aqueous dispersion of mountain bark and using the yuzu medicine made by paper-shaping it, the yuzu medicine paper and the wet ceramic base will be almost completely separated when dry. They found that the ceramic material shrinks at a similar rate and does not cause wrinkles on the surface of the ceramic material.

We also discovered that by using such a minutely thick cuff paper, it is possible to shape the surface of a ceramic base with a minute pressure. Moreover, all the ingredients in the Yuyaku paper can be pure medicine, so
It was discovered that there was no need for a process to remove just the paper component. The present invention is based on such knowledge.

That is, the present invention involves dispersing yuzu medicine in an aqueous dispersion of mountain bark, and making yuzu paper from the dispersion into a paper form and attaching it to the main surface of the ceramic raw material during or after the molding. This is a distinctive method of pongee-laying ceramics.

The mountain bark used in the present invention is a clay mineral having a large number of hydroxyl groups on its surface, and includes hydrated magnesium silicate (sepiolite) and hydrated magnesium aluminum silicate. (hydrousmagne
Attapulgiite (another name: palygorskite) of -slumaluminmmsilica).

Commonly known as mountain cork
, mountain leather
), is a general term for minerals called mountain rocks, and meerschaum in Japan is also a type of this mineral. The aqueous dispersion of mountain bark used in the present invention is, for example, a dispersion in which the concentration of mountain bark is 0.05 to 5% by weight, preferably 0.1 to 1% by weight. This aqueous dispersion, like other clays, can be obtained by simply placing mountain bark in water and mixing it with a suitable method. When making this aqueous dispersion, dispersion can be made easier if, for example, hydrogen peroxide, glycols, glycerin, polyhydric alcohols such as sugar are applied to the mountain bark in advance. Furthermore, alcohols such as methanol and ethanol, ketones such as acetone, and esters such as ethyl acetate may be added to water in advance. Dispersion of mountain bark can also be promoted by using hot water instead of water.
Any dispersion method may be used for dispersion, but a dispersion having a concentration of mountain bark of about 1% by weight or less can be dispersed, for example, by a high-speed mixer. For highly concentrated dispersions, a method such as a three-roll method can be used, for example. For dispersions of 1 to 5% by weight, a dispersion method in which mixing and kneading are carried out simultaneously, such as using a dispersing machine for papermaking clay, is preferred.

For dispersion, dispersion aids and adhesives such as sodium polyphosphate, ammonium polyphosphate, alumina sol, silica sol, polyvinyl alcohol, CMC, synthetic rubber latex, Tsunomata, Funori, Toruro Aoshi, Konniyaku, Utsugi, etc. may be added.

Further, inorganic fibers or organic fibers other than mountain bark may be co-dispersed.

Examples of inorganic fibers include glass fiber, rock wool, ore,
Examples include wire, kaolin fiber, boron fiber, carbon fiber, ceramic fiber, quartz fiber, and fused silica fiber. Examples of organic fibers include pulp obtained from coniferous trees such as Japanese pine and Japanese pine, long fibers for Japanese paper such as mitsumata, kozo, and ganbi, fibers of hemp, cotton, and the like. When mixing and dispersing long fibers, it is preferable to use an agitator-type retainer. The pongee medicine used in the present invention may be any pongee medicine that is generally used in the field of ceramics and the like.

Specifically, for example, a High fire rate Yuzu (SK 8-10), Kawatetsu Yuzuume Yuzu (SK 8-9 Misaki), Tetsusasode (SK 9-1 F
, RF), Soba Sode (SK 9 Misaki), Irabo Yuzu (SK 9 Misaki), Vermilion Sode (SK 9 valence), Kiseto Yuzu (SK 8-9 valence)
■ Kotsumugi Shikibu Yuzu (SK8~9 Misaki), Aoshikibu Yuzu (SK8~9
price), uniform kiln pongee (SK 9 to 1 plate F'31 matte Tsumugi cinnabar yuzu (SK 9 to 1 plate F), white matte yuzu (SK 8
- 9 Misaki), white matte yuzu (SK 8-9 valence), golden brown matt sleeve (SK 9 valence), dark blue matte yuzu (SK 9 valence) [4
- Crystal pongee Titanium crystal pongee (SK9 sail), Cobalt crystal pongee (SK9 sail), Manganese crystal pongee (SK 8-9 Misaki), Zinc crystal pongee (
SK 9 valence), {51 white cloudy yuzu white hagitsumugi (SK 8-9 cape), Shino yuzu (SK 8-9 valence),
Opalescent yuzu (SK 8-9 valence) '6} Others Ruri Tsumugi (SK9 Misaki), Satsuma Yuzu (SK8 Misaki), b, low-temperature pongee (SKOI umbrella ~ SKO $) '1) Tsumugi antimony using standard frit Yellow sleeves (830-850 p.m.), manganese Tsumugi (830-85 p.o.), steel green pongee (800-830 p.m.)
, iron yellow yuzu (830~850℃), chrome red pongee (800~
Total oqo), Turkish blue pongee (850~87℃), uranium mulberry (850~87pi0)■ Other selenium red yuzu (810~840℃), uranium vermilion thin 85
0 to 870°C), Turkish blue yuzu (950 to 0°C), and chrome yellow pongee (970 to 99 pi○).

In addition to the above-mentioned yuzu medicine, other components of pongee medicine may be added separately, and powders of mountain bark, metal, etc. may also be added.

The shape of Tsumugi medicine may be in the form of a fine powder with an average particle size of about 10 to 0.25, and more preferably, an average particle size of about 0.5.
It may be grain-sized particles of rice grains on the rib side to 2.5 sides. The ratio of pongee medicine to mountain bark varies depending on the type of pongee medicine used and the various fiber components mixed into the dispersion, but the dry weight ratio of pongee medicine to mountain bark is approximately 0.01 to 500. , preferably about 0.1 to 100 kHz, more preferably about 0.1 to 5 MB.

Tsumugi medicine is usually made using a common method such as a fly frame stick or a ball mill.
Disperse it in an aqueous dispersion of mountain bark using the method described in the article.

Next, this dispersion is processed in an appropriate manner (e.g., until it becomes paper-like).
Dehydrate by natural furnace heating, vacuum furnace filtration, etc.). The paper thus obtained may be dried if necessary. In the present invention, the pongee medicine paper thus obtained is attached to the main surface of the ceramic raw material during or after molding.

Ceramic raw materials include, for example, porcelain Western tableware, ceramic Western tableware, sanitary ware, porcelain toys, ornaments, glass, insulators, spark plug insulators, high frequency insulating materials, dielectric materials, porcelain for physics and chemistry, acid-resistant porcelain, acid-resistant bricks, and tiles. , terracotta clinker bricks, pavement bricks, red bricks, clay tiles, etc. are used as base materials for ceramics. Examples of molding methods for ceramic raw materials include coin molding, potter's wheel molding, extrusion molding, mold raising molding, press molding, and extrusion molding. A method of compressing and molding using a molding machine (press molding method) is preferred.

Citrus paper is attached to the main surface of the ceramic raw material thus formed.

The ceramic raw material may be one obtained by kneading and hardening the ceramic material and molding it into a certain shape. Alternatively, this molded product may be scaled at an appropriate temperature (eg, about 700 to 900°C). Thus, in the present invention, the main surface of the ceramic raw material may be wet, dry, or unglazed. When attaching pongee paper to ceramic raw materials during molding, for example, (i) a method of molding while pasting pongee paper onto the moist kneaded clay that comes out of the shikneading machine, (ii)
A method is to cut and shape the soil that comes out of the gypsum mold, and then paste pongee paper directly onto the wet molded material. Pour this fluid ceramic clay,
After absorbing the water with a sedge, the remaining mud is poured out and the pongee is tied at the same time as the coin is formed, and another method is to press soft kneaded soil onto the double yuzu paper and tie the pongee at the same time as the dents are formed. When attaching pure medicinal paper to the main surface of a ceramic raw material, it may be attached to the main surface using water, or it may be attached using a known adhesive or the like.

Although it is difficult to generalize about such adhesives due to the type of pongee and the influence on the main surface of the ceramic raw material, for example, natural or synthetic adhesives such as starch paste, CMC, rubber latex, and F/IJ are available. , pine resin, wax, resins such as synthetic resins, water glass, silicic acid sol, alumina sol, inorganic adhesives such as aluminum phosphate, etc. may be used. In addition, when attaching pongee medicine paper to the main surface of ceramic raw materials, (i) cut the pongee medicine paper into small pieces and sprinkle or spray it with water or adhesive, (ii) after pasting the pongee medicine paper , roll crimping, press crimping, centrifugal crimping, vacuum operation, etc. may be used for attachment.

It is also possible to use two or more layers of pongee medicine paper.

In this case, various patterns can be created by overlapping them. When layers of the same type of medicinal paper are stacked on top of each other, a superior effect appears. By layering different types of pongee paper, you can eliminate the need for double layering. For example, Shigaraki's famous sea cucumber pongee can be obtained by layering Shirohagiyuzu paper and Tetsutsumugi paper. The pigment-containing paper and the pongee paper of the present invention may be overlapped. By layering paper containing carbonated steel and paper obtained using the above-mentioned Oribe yuzu with the oxidized steel removed, Oribe produces shades of green and partially green. You can make yuzu. It is also possible to create unique patterns by applying techniques such as kirigami, origami, and imari to pongee paper, and layering pongee paper of different colors on top of this. Furthermore,
It is also possible to create a pongee by making a plurality of sodeyaku ingredients into paper shapes and stacking them and firing them to react with the pongee medicine ingredients.

This method is particularly effective in the case of crystalline yuzu.
Paper that uses metal as a pongee medicine component requires oxygen during firing, so it can produce the color of the reduced pure medicine even in an oxygen atmosphere. Also, a combination of sleeve medicine paper and regular yuzu medicine may be used. First, you can apply pongee by using yuyaku paper first, then pouring regular yuyaku on it, spraying it, dipping it, etc., or use yuyaku paper on the item that has already been coated with pongee. You can also sprinkle, spray, apply, or paste. The pongee making method of the present invention does not require any special pongeeing equipment or means, ■ produces products with less uneven color than the conventional pongee method, and ■ eliminates dust and pure chemicals in the process of manufacturing cuff paper. ■ There is no risk of pollution due to the scattering of materials, ■ By using patterned pongee paper, it is possible to express various patterns on the main surface of ceramic raw materials. ■ In particular, ceramic raw materials can be molded using a compression molding machine. When molding by compression, sleeves can be applied at the same time as molding by simply attaching pongee paper to the main surface (e.g., top, bottom, side, etc.) of the ceramic raw material filled in a metal mold or wooden mold.

It has the following advantages. Next, the present invention will be specifically explained with reference to Examples.

Example 1 Composition 1 obtained by removing magnesite from Fuume Tsumugi 0.5
In addition to 600% mountain bark dispersion, mix well with a household mixer and make into 6 skin x 2 skin pongee paper.

After removing talc from Shirohagi Tsumugi, add 1 shipload of the composition to 600ml of 0.5% mountain bark dispersion, mix thoroughly with a household mixer, and then print on 6 skins x 2 skins of citrus paper. .

On the other hand, a continuous L-shaped tile base (1 skin thick, 6 arcs outside of L) is kneaded by the Shiren machine, and one side is covered with white Hagi Tsumugi paper, and the other side is covered with Fuume Tsumugi paper. When crimped continuously with a roll, a long L-shaped tile base coated with two colors is created. This is perpendicular to the L-shaped tiles, cut into threads every 10 steps, allowed to dry in an upright position, and then gradually heated to 1250 qo (while still standing) to form an L-shaped tile. No dripping of Tsumugi medicine occurred.
In the normal method, the L-shaped base material comes out from the kneading machine.
Cut into pieces, dry in the sun, and then fire unglazed.
After covering one side of the L shape with paper, spray white Hagi Tsumugi.
dry. After covering the white hagi-sode with paper again so as not to peel it off, spray the other sides with fume-sode and let it dry. The smooth side of the yuzu medicine is held vertically, the uneven side is placed horizontally, and it is gradually heated in the oven to 1250 oo, so there are two drying steps and two steps of covering it with paper, which saves you the trouble of replacing it after each step. . Example 2 The two types of yuzu medicine used in Example 1 were wrapped alternately in a bandage-like manner or as a paper tube on a wet cylindrical base with a diameter of 8 skins that had been kneaded using a clay kneading machine. The tube was placed in a mold with a diameter of 8 arcs and a length of 30 mm, and the tube was rotated at high speed around the center of the tube to press and mold it using a far-D force.

After drying well in the sun, it was fired to 1250°C to obtain a ceramic tube with a black and white spiral pattern on its surface.

Example 3 Cut the Fuume Tsumugi paper from Example 1 in half lengthwise, and stack two sheets of Shirohagiyuzu paper on top of each other.

A continuous tile base with a thickness of 1 inch and a medium size of 6 mm is taken out of the tile machine, and the above-mentioned citrus paper is layered and crimped. This was cut into every 10 skins, dried and heated to 1,250 qo, resulting in a sea cucumber tile with a depression in the middle equal to the thickness of the paper and a white yuzu edge. A molding method that takes advantage of paper thickness is possible.

Example 4 Let's strain the mold into a centrifuge with 10 pieces on the circumference (moisture 60
% of tile base mud) and rotated at 1000 revolutions, an L-shaped tile base with a moisture content of about 30% is created.

Claims (1)

[Claims] 1. A ceramic product characterized in that a glaze is dispersed in an aqueous dispersion of mountain bark, and the dispersion is made into paper, and the resulting glaze paper is attached to the main surface of the ceramic raw material during or after the molding. Glazing method.