JP2004306594A - Method for manufacturing sanitary ware - Google Patents
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- JP2004306594A JP2004306594A JP2004065008A JP2004065008A JP2004306594A JP 2004306594 A JP2004306594 A JP 2004306594A JP 2004065008 A JP2004065008 A JP 2004065008A JP 2004065008 A JP2004065008 A JP 2004065008A JP 2004306594 A JP2004306594 A JP 2004306594A
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Abstract
Description
本発明は、大便器、小便器、洗面器などの衛生陶器の製造方法に関するものである。 The present invention relates to a method for manufacturing sanitary ware such as a toilet, a urinal, and a washbasin.
例えば、大便器では、現在最も広く普及している、リム部に設けられた吐水口から洗浄水を吐出することによりボウル面を洗浄するタイプの便器は、便鉢部とリム部をそれぞれ別の成形型により鋳込み成形し、その後に型より取り出して図７に示すように便鉢部１の上周縁の便鉢部接合面１１とそれに相対するリム部４の下面のリム部接合面１２とを接着用泥漿を使用して接合し、接合状態において乾燥し、その後に施釉し焼成して図６のような製品としている（例えば、特許文献１参照）。 For example, in the case of toilet bowls, the most widely used toilet bowl of the type that cleans the bowl surface by discharging washing water from a spout provided in the rim section has a separate toilet bowl section and rim section. The mold is cast-molded with a molding die, then taken out of the mold, and as shown in FIG. 7, the toilet bowl joint surface 11 on the upper peripheral edge of the toilet bowl 1 and the rim joint surface 12 on the lower surface of the rim 4 opposed thereto. Bonding is performed using a bonding slurry, dried in the bonded state, and then glazed and fired to obtain a product as shown in FIG. 6 (for example, see Patent Document 1).
上記のように、便鉢部とリム部はそれぞれ別の成形型で鋳込み成形されるため、便鉢部接合面とリム部接合面は、便鉢部やリム部の他の部分に比べ、素地粒子の配向が異なり、焼成時に収縮のばらつきが生じてしまう。その結果、便鉢部とリム部の接合部に当たる洋風便器の外周面には、焼成後に凸状の段差が発生してしまっていた。便鉢部とリム部との接合部の外周面は、通常の便器使用時によく目に付く場所であって、凸状の段差は外観上の見栄えを阻害していた。 As described above, since the toilet bowl portion and the rim portion are molded by casting with different molds, the toilet bowl portion joining surface and the rim portion joining surface are more solid than the toilet bowl portion and other portions of the rim portion. The orientation of the particles is different, which causes shrinkage variation during firing. As a result, a convex step was generated on the outer peripheral surface of the Western-style toilet bowl, which corresponds to the joint between the toilet bowl and the rim, after firing. The outer peripheral surface of the joint between the toilet bowl portion and the rim portion is a place that is often noticeable when a normal toilet is used, and the convex step hinders the appearance.
そこで、本発明の目的は衛生陶器の接合部外周面に生じる段差を低減することによって、外観上の見栄えの良好な衛生陶器の製造方法を提供することである。 Therefore, an object of the present invention is to provide a method of manufacturing a sanitary ware having a good external appearance by reducing a step generated on an outer peripheral surface of a joint of the sanitary ware.
本発明では、上記課題を解決すべく、焼成前の複数の成形体を接着用泥漿を用いて互いに接合して衛生陶器を製造する方法において、前記接合時に対峙する成形体の少なくともカドを切り欠いていることを特徴とする衛生陶器の製造方法を提供する。 In the present invention, in order to solve the above-mentioned problem, in a method of manufacturing a sanitary ware by bonding a plurality of molded bodies before firing using an adhesive slurry, at least a corner of the molded bodies facing each other at the time of the joining is notched. And a method for manufacturing sanitary ware.
各成形体は、予め種々の成形方法によって成形されるが、各成形体の端面となる接合面は、成形体の他の部分と粒子配向が異なることから収縮挙動が異なってしまう。すなわち、粒子の配向による収縮は、図５の（Ａ）図に示すように粒子が並んだ、図面縦方向に収縮は大きく、横方向に小さくなる。この傾向は、乾燥時及び焼結時も同様である。また、この挙動は、泥漿鋳込み成形でも半乾式加圧成形でも、押出し成形の場合にもあることから、成形方法に依らず認められる現象である。本発明の成形体では、成形体の接合面近傍と成形体の厚み方向とでは、粒子は、概略図５の（Ｂ）のように配向していると推測され、この場合、ａ部の縦方向の収縮、及びｂ部の横方向の収縮が大きく、ｂ部の縦方向の収縮が小さいので、ｂ部が接合面近傍で取り残されることで、凸状に残り、接合部に段差を生じてしまっていたのである。従って、単純には、この配向の異なる部分を全て取り除くことで、解消できることになるが、凸部の大きさを低減する為には、少なくとも接合面を構成する成形体のカドを切り欠くことで、改善される。カドは、製品の外観上に現れる片方のみでもよく、例えば、大便器の便鉢成形体とリム成形体との接合の場合には、ボウル面側でなく外周面に当たるカドを切り欠けば良い。 Each molded article is molded in advance by various molding methods, but the joint surface, which is the end face of each molded article, has a different shrinkage behavior due to a different particle orientation from the other parts of the molded article. In other words, the shrinkage due to the orientation of the particles is such that the particles are arranged as shown in FIG. This tendency is the same during drying and sintering. In addition, this behavior is a phenomenon that is recognized regardless of the molding method, because it may be in the case of slip casting, semi-dry pressure molding, or extrusion molding. In the molded article of the present invention, it is presumed that the particles are oriented roughly as shown in FIG. 5B in the vicinity of the joint surface of the molded article and in the thickness direction of the molded article. Direction shrinkage, and the b-part shrinkage in the horizontal direction is large, and the b-part shrinkage in the vertical direction is small, so that the b-part is left behind in the vicinity of the joining surface, so that the b-part remains in a convex shape, causing a step in the joining part. It was gone. Therefore, the problem can be solved simply by removing all the portions having different orientations.However, in order to reduce the size of the convex portion, at least by cutting out the corners of the molded body constituting the joint surface. , Will be improved. Only one of the corners appearing on the appearance of the product may be used. For example, in the case of joining a toilet bowl molded body and a rim molded body of a toilet bowl, the corners not hitting the bowl surface but the outer peripheral surface may be cut off.
本発明によれば、上記の知見に基き接合時に対峙する成形体の少なくともカドを切り欠くことで、接合面に見られた段差を低減することができるものである。 According to the present invention, it is possible to reduce the step seen on the joint surface by cutting out at least the corners of the molded body facing each other at the time of joining based on the above findings.
また、上記カド部の切り欠き方としては、面取りや丸み付けが、成形後の成形体から切除する場合には、作業上、また、自動化する上で望ましい。 Further, as the method of notching the corner portion, chamfering or rounding is desirable in terms of work and automation when cutting off the molded body after molding.
更に、カド部の切り欠きを、予め成形型で構成することで、切り欠きの形状、寸法が精度良く成形でき、成形後の切り欠き作業が必要無く、工数を低減できるので、望ましい。また、予め、成形型で面取りや丸み付けをした部分では、接合面の大部分を占める粒子の配向に比べ、配向が乱れる傾向にあり、これによって、成形体の厚み方向から接合面への粒子の大きな配向の変化を緩和し、接合面側と成形体厚み方向との収縮挙動の差を緩和させる方向に働くため、接合部での凸状の段差の低減につながることになる。 Furthermore, it is desirable to form the notch of the corner portion with a molding die in advance so that the shape and the size of the notch can be formed with high accuracy, the notch operation after the molding is not required, and the number of steps can be reduced. In addition, in a portion that has been chamfered or rounded in advance with a molding die, the orientation tends to be more disordered than the orientation of particles that occupy most of the joint surface, and as a result, particles from the thickness direction of the molded body to the joint surface In the direction of reducing the difference in the shrinkage behavior between the joining surface side and the thickness direction of the molded body, a large change in the orientation is reduced, which leads to a reduction in the convex step at the joining portion.
本発明の好ましい態様においては、成形型の面取りされた形状または丸みの付いた形状に当たる部分には、半透水性の被膜が形成されているようにする。
成形型の表面に半透水性の被膜が形成された部分は、それ以外の部分と比較して吸水性が悪くなるので、素地原料の着肉速度が遅くなる傾向にある。そのため、所定の時間で鋳込み成形により得られた成形体は、成形型に半透水性の被膜を形成しておいた部分の粒子の配向が乱れ、接合面側と成形体厚み方向との収縮挙動の差を緩和させる方向に働くため、接合部での凸状の段差の低減につながることになる。
In a preferred embodiment of the present invention, a semi-permeable coating is formed on a portion corresponding to a chamfered shape or a rounded shape of the mold.
The part where the semi-permeable film is formed on the surface of the mold has a lower water absorption than the other parts, so that the deposition rate of the raw material tends to be lower. For this reason, in the molded product obtained by casting for a predetermined time, the orientation of the particles in the portion where the semi-permeable film was formed on the molding die is disturbed, and the shrinkage behavior between the joining surface side and the thickness direction of the molded product is reduced. Work in a direction to reduce the difference between the two, which leads to a reduction in a convex step at the joint.
本発明の好ましい態様においては、半透水性の被膜は、ワセリン又は低濃度の素地泥漿により形成するようにする。
成形型の表面にワセリン被膜を形成しておくことにより、素地泥漿内の水はワセリン被膜が抵抗になって型側へ移動できる量が減少する。そのため、この部分の素地原料粒子の配向が乱れやすくなり、接合面側と成形体厚み方向との収縮挙動の差を緩和させる方向に働くため、接合部での凸状の段差を低減することができるようになる。また、ワセリン自体は撥水性のため、脱型時に成形体側に移行することがなく、好適である。低濃度の素地泥漿を用いて成形型の表面に予め素地の薄い被膜を形成しておいた場合も、この部分の吸水速度が減少することにより、同様の効果が得られることになる。
In a preferred embodiment of the invention, the semi-permeable coating is formed from petrolatum or a low concentration of the base slurry.
By forming a petrolatum coating on the surface of the mold, the amount of water in the base slurry that can move to the mold side due to the resistance of the petrolatum coating decreases. Therefore, the orientation of the raw material particles in this portion is easily disturbed, and works in a direction to reduce the difference in shrinkage behavior between the joining surface side and the thickness direction of the molded body, so that it is possible to reduce the convex step at the joining portion. become able to. Further, since petrolatum itself is water-repellent, it does not migrate to the molded body side at the time of demolding, which is preferable. Even when a thin film of the base material is previously formed on the surface of the mold using low-concentration base slurry, the same effect can be obtained by reducing the water absorption rate in this portion.
本発明の好ましい態様においては、前記面取りされた形状または丸みの付いた形状は、便鉢部およびリム部成形後に形成するようにする。
面取りされた形状または丸みの付いた形状を便鉢部およびリム部の鋳込み成形後に形成するようにすることにより、素地原料の組成を変更したりした際に焼成時の収縮率が変わることによって、面取りまたは丸みの大きさを変更する必要性が生じた場合、適宜変更することが可能となるので好適である。
In a preferred aspect of the present invention, the chamfered shape or the rounded shape is formed after forming the toilet bowl and the rim.
By forming the chamfered shape or the rounded shape after the casting of the toilet bowl and the rim, the shrinkage ratio during firing changes when the composition of the base material is changed, If the necessity of changing the size of the chamfer or roundness arises, it is possible to change it appropriately, which is preferable.
本発明の好ましい態様においては、前記面取りされた形状において面取りする寸法は、素地厚み方向の面取り長さをＴ、接合面から成形体方向の面取り長さをＬとしたとき、ＴまたはＬが２ｍｍ以上且つＬ≧Ｔであるようにする。
成形体の粒子の配向は、上述したように接合部分で大きく異なってくることから、その部分を切除することで、接合部での粒子の配向は、成形体の厚み方向の配向と略同じになり、その為、接合部での収縮挙動も成形体と略同じになるが、凸部の低減には、少なくともＴ及びＬが２ｍｍ以上あれば、粒子の配向による収縮挙動を緩和できる。尚、凸部を形成する主要因となる粒子の配向は、接合面から成形体方向の面取り長さＬ方向にあるので、Ｌの方を長く取ることが良い。また、Ｔが大きくなると接着用泥漿を多く塗布することになるため、２〜５ｍｍが望ましい。
この傾向は、面取り部分を型に予め構成した場合でも同様であり、粒子の配向を乱して、接合面での大きな配向の変化を緩和するためには、Ｔ、Ｌは２ｍｍ以上で、Ｌ≧Ｔとする。
In a preferred aspect of the present invention, the chamfered dimension in the chamfered shape is such that T or L is 2 mm, where T is the chamfer length in the substrate thickness direction and L is the chamfer length in the direction of the compact from the joining surface. Above and L ≧ T.
As described above, since the orientation of the particles of the molded body greatly differs at the joint portion as described above, by removing the portion, the orientation of the particles at the joint is substantially the same as the orientation in the thickness direction of the molded body. Therefore, although the shrinkage behavior at the joint is almost the same as that of the molded body, the shrinkage behavior due to the orientation of the particles can be reduced if at least T and L are 2 mm or more. In addition, since the orientation of the particles which is a main factor for forming the convex portion is in the direction of the chamfering length L from the joint surface to the molded body, it is preferable that L is longer. Further, when T is large, a large amount of adhesive slurry is applied, so that 2 to 5 mm is desirable.
This tendency is the same even when the chamfered portion is previously formed in a mold. In order to disturb the orientation of the particles and reduce a large change in orientation at the joint surface, T and L are 2 mm or more and L Let ≧ T.
本発明の好ましい態様においては、前記丸みの付いた形状における丸みの半径は、２ｍｍ以上であるようにする。
丸み付けの場合も、面取りの場合と同様に半径２ｍｍ以上あれば、凸部の低減になる。なお、曲率半径Ｒが大きくなると接着用泥漿を多く塗布することになるため、半径２〜５ｍｍが望ましい。
In a preferred aspect of the present invention, the radius of the roundness in the rounded shape is 2 mm or more.
In the case of rounding, as in the case of chamfering, if the radius is 2 mm or more, the number of convex portions is reduced. If the radius of curvature R is large, a large amount of adhesive slurry is applied, so that a radius of 2 to 5 mm is desirable.
本発明の好ましい態様においては、前記接着用泥漿にはＡｌ２Ｏ３成分が２０重量％以上４０重量％以下含有されているようにする。
成形体接着後の切り欠いた接合面には、従来よりも多くの接着用泥漿が存在するため、接着用泥漿の収縮挙動についても、調整しておくことが望ましい。無添加の接着用泥漿は、成形体に比べ、若干大きな収縮をすることから、それを緩和させるために、Ａｌ２Ｏ３を添加することが望ましい。
接着用泥漿にＡｌ２Ｏ３粉末等を添加して、接着用泥漿中のＡｌ２Ｏ３成分を通常よりも多い２０重量％以上含有させることにより、接着用泥漿部分の焼成時における収縮率を小さくすることができ、面取りまたは丸み形状を変更せずに接合部の外周面側に生じてしまっていた凹状の段差を無くすことができるので好適である。また、接着用泥漿中のＡｌ２Ｏ３成分が４０重量％を超えてしまうと、接着用泥漿部分が焼成時に焼き締まらず、強度や外観を大きく阻害することになってしまうので不適である。
In a preferred aspect of the present invention, the bonding slurry contains an Al 2 O 3 component in an amount of 20% by weight or more and 40% by weight or less.
Since more bonding mud is present on the cut-off joint surface after the molded body is bonded, it is desirable to adjust the shrinkage behavior of the bonding slurry as well. Since the additive-free adhesive slurry slightly shrinks as compared with the molded body, it is desirable to add Al 2 O 3 to alleviate the shrinkage.
By adding Al 2 O 3 powder and the like to the bonding slurry to contain 20% by weight or more of the Al 2 O 3 component in the bonding slurry more than usual, the shrinkage rate of the bonding slurry portion during firing is reduced. This is preferable because it is possible to reduce the size and to eliminate the concave step formed on the outer peripheral surface side of the joint without changing the chamfer or the rounded shape. On the other hand, if the Al 2 O 3 component in the bonding slurry exceeds 40% by weight, the bonding slurry portion is not compacted at the time of firing, which is unfavorably impaired in strength and appearance.
本発明の好ましい態様においては、前記接着用泥漿には、硫酸マグネシウム、塩化マグネシウム、炭酸ナトリウム、ドロマイトの少なくとも１種が含有されているようにする。
成形体接着後の切り欠いた接合面には、従来よりも多くの接着用泥漿が存在するため、接着用泥漿の収縮挙動についても、調整しておくことが望ましい。無添加の接着用泥漿は、成形体とは異なった収縮となることが多いため、それを調節するために、硫酸マグネシウム、塩化マグネシウム、炭酸ナトリウム、ドロマイトの少なくとも１種を含有するようにすることが望ましい。
In a preferred aspect of the present invention, the bonding slurry contains at least one of magnesium sulfate, magnesium chloride, sodium carbonate, and dolomite.
Since more bonding mud is present on the cut-off joint surface after the molded body is bonded, it is desirable to adjust the shrinkage behavior of the bonding slurry as well. Since the additive-free adhesive slurry often shrinks differently from the molded body, it should contain at least one of magnesium sulfate, magnesium chloride, sodium carbonate, and dolomite to control the shrinkage. Is desirable.
本発明によれば、成形体の接合部外周面に生じる段差を低減することができ、外観上の見栄えの良好な衛生陶器を製造することができるようになる。 ADVANTAGE OF THE INVENTION According to this invention, the step which arises in the outer peripheral surface of the joining part of a molded object can be reduced, and it becomes possible to manufacture a sanitary ware having a good external appearance.
図１は、便鉢部１の成形後の状態を示す図、図２は、リム部４の成形後の状態を示す図で、参照符号３、６は、それぞれの接合面を示す。 FIG. 1 is a view showing a state of the toilet bowl part 1 after molding, FIG. 2 is a view showing a state of the rim part 4 after molding, and reference numerals 3 and 6 indicate respective joining surfaces.
本発明では、以下、大便器の便鉢部とリム部の接着の実施例に基づき更に詳細に説明するが、本発明は、実施例に限定されることなく、全ての衛生陶器の接合面に適用できるものである。
大便器を製造する方法は、原料を湿式粉砕して衛生陶器用素地泥漿を準備する工程、前記衛生陶器用素地泥漿を大便器の便鉢部およびリム部の成形素地とする工程、前記便鉢部とリム部の成形素地を接着用泥漿を用いて接合する工程、接合した成形素地を乾燥する工程、釉薬原料を湿式粉砕して釉薬泥漿を準備する工程、前記釉薬泥漿を成形素地上に適用して釉薬層を形成する工程、焼成する工程、を経て行う。
In the present invention, hereinafter, the present invention will be described in more detail based on an embodiment of the adhesion of the toilet bowl portion and the rim portion of the toilet bowl, but the present invention is not limited to the embodiment, and all the joint surfaces of sanitary ware Applicable.
A method of manufacturing a toilet bowl, a step of preparing a base slurry for sanitary ware by wet grinding the raw material, a step of forming the base slurry for sanitary ware into a forming base for a toilet bowl portion and a rim portion of a toilet bowl, Joining the molded body of the rim and the rim using gluing slurry, drying the joined molded body, wet-grinding the glaze raw material to prepare the glaze slurry, applying the glaze slurry to the molding substrate Through a step of forming a glaze layer and a step of firing.
衛生陶器用素地泥漿を調製する方法は、好ましい粒径分布の粉体を入手することができれば、それらを混合・撹拌するだけで良い。この方法は各成分の粒径分布を独立してコントロールできるため、最も簡便な方法である。一方、好ましい粒径分布の粉体原料が入手できない時（陶石等の石塊状の原料を用いる場合等）には、ボールミル等を用いた素地原料の粉砕工程を設ける。この場合には、全原料を一括して粉砕する方が工程としては簡単であるが、場合によっては一部の原料を除いて粉砕し、粉砕終了後にその原料を添加する方が好ましい場合もある。衛生陶器用素地泥漿を大便器の便鉢部およびリム部の成形体とする方法は、鋳込み成形、押し出し成形、ろくろ成形、プレス成形等、特に制限はないが、衛生陶器等の大型・複雑形状品には通常、鋳込み成形が用いられる。 As a method for preparing a sanitary ware body slurry, it is only necessary to mix and stir the powder if a powder having a preferable particle size distribution can be obtained. This method is the simplest method since the particle size distribution of each component can be controlled independently. On the other hand, when a powder raw material having a preferable particle size distribution is not available (for example, when using a raw material in the form of a block of stone such as pottery stone), a step of pulverizing the raw material using a ball mill or the like is provided. In this case, it is simpler as a process to pulverize all the raw materials at once, but in some cases, it may be preferable to pulverize by removing some raw materials and to add the raw materials after the completion of the pulverization. . The method of forming the sanitary ware body slurry into a molded body for the toilet bowl and rim of the toilet bowl is not particularly limited, such as casting, extrusion, potter's wheel molding, and press molding. Usually, casting is used for the product.
成形体の一部分に面取りまたは丸みの形状を持たせるための方法は、鋳込み成形用の石膏型や樹脂型等を作製する段階において、面取りまたは丸み形状を持たせるべき場所に予め加工しておくことができれば、成形型に素地泥漿の流し込みを行って所定の素地厚みが着肉後、脱型するだけでよい。一方、鋳込み成形用の石膏型や樹脂型を予め加工しておかない場合には、脱型した成形体の面取りまたは丸みを持たせたい部分にゲージ等を当て、成形体の一部を切り取ることによる。 The method for imparting a chamfered or rounded shape to a part of the molded body should be preliminarily processed at a place where the chamfered or rounded shape should be provided at the stage of producing a plaster mold or a resin mold for cast molding. If it is possible, it is only necessary to pour the base slurry into the forming mold and remove the mold after the predetermined base thickness has been reached. On the other hand, if the gypsum mold or resin mold for cast molding is not pre-processed, apply a gauge or the like to the chamfered or rounded portion of the removed molded body, and cut off a part of the molded body. by.
図３、図４は、面取り加工及び丸み付けを施した後の成形体を示す図であり、リム部４の接合面６と便鉢部１に接合面３が対峙するカドの便器の外表面に当たる側を面取り７、８、丸み付け９、１０している。また、図３において、Ｔを素地厚み方向の面取り長さ、Ｌを接合面から成形体方向の面取り長さとしている。 FIG. 3 and FIG. 4 are views showing the molded body after the chamfering and rounding, and the outer surface of the toilet bowl of the KADO in which the joining surface 6 of the rim portion 4 and the joining surface 3 face the toilet bowl portion 1. Are chamfered 7, 8 and rounded 9, 9. In FIG. 3, T is the chamfer length in the thickness direction of the substrate, and L is the chamfer length in the direction from the joining surface to the formed body.
成形型の面取りされた形状または丸みの付いた形状に当たる部分に半透水性の被膜を形成するための方法は、成形型を構成する石膏や樹脂の目的とする表面に薄くワセリンを塗布したり、タルクのスラリーを塗布して乾燥させたりすることによる。または、片面に粘着層が設けられたセロハン、不織布等の半透水性シートを、成形型を構成する石膏や樹脂の目的とする表面に直接貼り付けることによっても可能である。 A method for forming a semi-permeable film on a portion corresponding to a chamfered shape or a rounded shape of a mold is to apply a thin vaseline to a target surface of gypsum or resin constituting the mold, By applying a slurry of talc and drying it. Alternatively, a semi-permeable sheet such as a cellophane or a nonwoven fabric having an adhesive layer on one side can be directly attached to a target surface of gypsum or resin constituting a molding die.
接着用泥漿を調製する方法は、衛生陶器素地泥漿に対して固形分濃度を若干高めに調節して所定の粒度に粉砕し、接着時の泥漿の垂れ防止として粘度を増加させるため、素地乾重に対して糊剤を０．０１〜５％程度加えることによる。好ましい糊剤は有機高分子系のものであり、例としてはカルボキシルメチルセルロースナトリウム、トラガガントゴム、アラビアゴム、ポリビニルアルコール、アルギン酸ナトリウム、カゼイン、酢酸セルロース、デキストリン、メチルセルロース、ペプトン、溶性デンプン、ヒドロキシプロピルセルロース、ゼラチン、各種ニグニン抽出物、各種エマルジョン系バインダー等を挙げることができる。更に、接着用泥漿の収縮率を成形体の収縮率に近似させるための、成形体の粒子径と略同じ、平均粒径１μｍ〜１０μｍのアルミナ（Ａｌ２Ｏ３）や硫酸マグネシウム、塩化マグネシウム、炭酸ナトリウム、ドロマイトといった成分を加えても良い。添加量は、Ａｌ２Ｏ３では、２０重量％以上４０重量％以下とする。 The method of preparing the bonding slurry is to adjust the solid content of the sanitary ware body slurry to a slightly higher level and pulverize it to a predetermined particle size, and to increase the viscosity to prevent dripping of the slurry at the time of bonding. About 0.01 to 5% of a paste. Preferred sizing agents are of organic polymer type, such as sodium carboxymethylcellulose, tragacanth gum, gum arabic, polyvinyl alcohol, sodium alginate, casein, cellulose acetate, dextrin, methylcellulose, peptone, soluble starch, hydroxypropylcellulose, gelatin. , Various lignin extracts, various emulsion binders and the like. Furthermore, in order to approximate the shrinkage rate of the bonding slurry to the shrinkage rate of the molded article, alumina (Al 2 O 3 ), magnesium sulfate, magnesium chloride, and the like having an average particle diameter of about 1 μm to 10 μm, which is substantially the same as the particle diameter of the molded article, Components such as sodium carbonate and dolomite may be added. The amount of Al 2 O 3 is 20% by weight or more and 40% by weight or less.
便鉢部とリム部の成形素地を接合する方法は、上記の如く成形して脱型された便鉢部とリム部の生素地とを互いに接合しやすい位置におき、リム部生素地のみ手で持ち上げられる程度まで乾燥して硬化させ、便鉢部の接合面に上記接着用泥漿を塗布し、リム部生素地を持ち上げて空中で１８０度回転させながら便鉢部生素地に沿うようにしてリム部生素地を便鉢部生素地の上に置き、リム部生素地と便鉢部生素地とが完全に重なり合うことを確認した後、接着面を手で上下から押さえ込むことにより行う。 The method of joining the molded body of the toilet bowl part and the rim part is as follows. The toilet bowl part and the green body of the rim part that have been molded and removed as described above are placed at a position where they can be easily joined to each other. Dry and harden to the extent that it can be lifted up, apply the above-mentioned adhesive slurry to the joint surface of the toilet bowl part, lift the rim part green body, rotate it 180 degrees in the air, and along the toilet bowl part green body The rim part green body is placed on the stool part green body, and after confirming that the rim part green body and the stool part green body completely overlap, the bonding surface is pressed down by hand from above and below.
釉薬泥漿を調製する方法は、好ましい粒径分布の粉体を入手することができれば、それらを混合・撹拌するだけで良い。この方法は各成分の粒径分布を独立してコントロールできるため、最も簡便な方法である。一方、好ましい粒径分布の粉体原料が入手できない時には、ボールミル等を用いた釉薬原料の粉砕工程を設ける。この場合には、全原料を一括して粉砕する方が工程としては簡単であるが、場合によっては一部の原料を除いて粉砕し、粉砕終了後にその原料を添加する方が好ましい場合もある。釉薬泥漿を成形素地に適用する方法は、スプレーコーティング、ディップコーティング、スピンコーティング、ロールコーティング等の一般的な方法が利用できる。 As a method of preparing the glaze slurry, it is only necessary to mix and stir the powder if a powder having a preferable particle size distribution can be obtained. This method is the simplest method since the particle size distribution of each component can be controlled independently. On the other hand, when a powder material having a preferable particle size distribution cannot be obtained, a step of pulverizing the glaze material using a ball mill or the like is provided. In this case, it is simpler as a process to pulverize all the raw materials at once, but in some cases, it may be preferable to pulverize by removing some raw materials and to add the raw materials after the completion of the pulverization. . General methods such as spray coating, dip coating, spin coating, and roll coating can be used for applying the glaze slurry to the molding base.
焼成温度は成形素地を予め焼結させておくか否かにより異なる。成形素地を予め焼結させておかない場合は、成形素地が焼結し、かつ釉薬が軟化する１０００℃以上の温度で焼成する。成形素地を予め焼結させておく場合は、釉薬が軟化可能である４００℃以上の温度で焼成する。 The firing temperature differs depending on whether or not the green body is sintered in advance. If the green body is not sintered in advance, it is fired at a temperature of 1000 ° C. or higher at which the green body is sintered and the glaze softens. When the green body is sintered in advance, it is fired at a temperature of 400 ° C. or more at which the glaze can be softened.
（実施例１）
表１の組成から成る釉薬原料２Ｋｇと水１Ｋｇ及び球石４Ｋｇを、容積６リットルの陶器製ポット中に入れ、ボールミルにより約１８時間粉砕した。レーザー回折式粒度分布計を用いて、粉砕後に得られた釉薬スラリーの粒径を測定したところ、１０μｍ以下が６５％、５０％平均粒径（Ｄ５０）が６．０μｍであった。
(Example 1)
2 kg of a glaze raw material having the composition shown in Table 1, 1 kg of water, and 4 kg of sphere were placed in a 6-liter pottery pot, and ground by a ball mill for about 18 hours. The particle size of the glaze slurry obtained after the pulverization was measured using a laser diffraction type particle size distribution analyzer. As a result, 65% was found to be 10 μm or less, and the 50% average particle size (D 50 ) was found to be 6.0 μm.
次に、表２に示す衛生陶器素地原料２Ｋｇと水１Ｋｇ及び球石４Ｋｇを、容積６リットルの陶器製ポットに入れ、ボールミルにより約１３時間粉砕した。レーザー回折式粒度分布計を用いて、粉砕後に得られた衛生陶器素地泥漿の粒径を測定したところ、１０μｍ以下が５６％、５０％平均粒径（Ｄ５０）が６．２μｍであった。 Next, 2 kg of the sanitary ware base material shown in Table 2, 1 kg of water, and 4 kg of cobblestone were put into a pot made of ceramic having a volume of 6 liters and ground by a ball mill for about 13 hours. The particle size of the slurry of the sanitary ware body obtained after the pulverization was measured using a laser diffraction type particle size distribution meter, and found to be 56% for 10 μm or less and 6.2 μm for 50% average particle size (D 50 ).
更に、表２と同じ組成で固形分濃度が約５％高い衛生陶器素地泥漿を準備し、これに糊剤としてカルボキシメチルセルロース（ＣＭＣ）を０．０２重量％添加することにより、接着用泥漿を調製した。
前記の如くして得られた衛生陶器素地泥漿を石膏型に流し込んで鋳込み成形を行い、縦×横×厚み＝１００×１００×１０ｍｍの成形体を２枚作製し、接合面側を２ｍｍ、４ｍｍ、６ｍｍ切除し、前記接着用泥漿を用いて前記成形体の面取り部が相対するように接合し、接合部が同一面となるように修正した。次に、５５℃で一晩乾燥し、再度接合部が同一面となるように修正した後、上記の如くして得られた釉薬スラリーを前記接合した成形体の表面にスプレーコーティング法により塗布し、室温で乾燥させた。続いて、この乾燥した成形体を接合面が床面と平行になるように保持したまま、１１００〜１２００℃で焼成することにより試料を得た。
尚、泥漿の注入、排出、焼成条件などは、実際の大便器のリム部や便鉢部と同様にしている。
Further, a sanitary ware body slurry having the same composition as in Table 2 and having a high solid content of about 5% was prepared, and 0.02% by weight of carboxymethylcellulose (CMC) was added as a sizing agent to prepare an adhesive slurry. did.
The thus-obtained sanitary ware body slurry is poured into a gypsum mold and cast and molded, and two molded bodies having a length, width, and thickness of 100 × 100 × 10 mm are produced, and the joint surface side is 2 mm, 4 mm. , 6 mm were cut off, and the molded bodies were joined so that the chamfered parts of the molded bodies were opposed to each other using the adhesive slurry, and the joints were corrected so as to be on the same plane. Next, after drying at 55 ° C. overnight and correcting again the joint so that the joint becomes the same surface, the glaze slurry obtained as described above is applied to the surface of the joined molded body by a spray coating method. And dried at room temperature. Subsequently, a sample was obtained by firing the dried molded body at 1100 to 1200 ° C. while keeping the joining surface parallel to the floor surface.
The conditions for injecting, discharging, and baking the slurry are the same as those of the rim portion and the toilet bowl portion of the actual toilet.
得られた試料について、接合部の近傍３ｃｍにおける釉薬表面の断面曲線を（株）ミツトヨ製サーフテストＳＶ−６２４により測定し、接合部の凹凸状態を評価した。その結果、接合部の最大段差を表３に示す。 About the obtained sample, the cross-sectional curve of the glaze surface in 3 cm vicinity of a joining part was measured by the surf test SV-624 made by Mitutoyo Corporation, and the unevenness state of the joining part was evaluated. As a result, Table 3 shows the maximum step at the joint.
（実施例２）
実施例１で調製した衛生陶器素地用泥漿を石膏型に流し込んで鋳込み成形を行い、縦×横×厚み＝１００×１００×１０ｍｍの成形体を２枚作製し、接合面側に半径３ｍｍの丸みを付ける加工をし、実施例１で調製した接着用泥漿を用いて前記成形体の丸み部が相対するように接合し、接合部が同一面となるように修正した後、５５℃で一晩乾燥し、実施例１で調製した釉薬スラリーを前記接合した成形体の表面にスプレーコーティング法により塗布し、室温で乾燥させた。続いて、この乾燥した成形体を接合面が床面と平行になるように保持したまま、１１００〜１２００℃で焼成することにより試料を得た。
(Example 2)
The slurry for sanitary ware body prepared in Example 1 was poured into a gypsum mold and cast and molded to produce two molded products having a length × width × thickness = 100 × 100 × 10 mm, with a radius of 3 mm on the joining surface side. The molded body was joined using the adhesive slurry prepared in Example 1 so that the rounded portions of the molded body were opposed to each other, and the joint was corrected so as to be on the same surface, and then overnight at 55 ° C. After drying, the glaze slurry prepared in Example 1 was applied to the surface of the joined molded body by a spray coating method, and dried at room temperature. Subsequently, a sample was obtained by firing the dried molded body at 1100 to 1200 ° C. while keeping the joining surface parallel to the floor surface.
得られた試料について実施例１と同様に評価した。接合部の最大段差を表３に示す。 The obtained sample was evaluated in the same manner as in Example 1. Table 3 shows the maximum step at the joint.
（実施例３）
実施例１で調製した衛生陶器素地用泥漿を、接合面に当たるカドを面取りした石膏型に流し込んで鋳込み成形を行い、縦×横×厚み＝１００×１００×１０ｍｍ（カド面取り）の成形体２枚作製し、実施例１で調製した接着用泥漿を用いて前記成形体の面取り部が相対するように接合し、接合部が同一面となるように修正した後、５５℃で一晩乾燥し、実施例１で調製した釉薬スラリーを前記接合した成形体の表面にスプレーコーティング法により塗布し、室温で乾燥させた。続いて、この乾燥した成形体を接合面が床面と平行になるように保持したまま、１１００〜１２００℃で焼成することにより試料を得た。面取り寸法は、成形体の厚み方向、接合面方向とも２ｍｍ（２Ｃと称す）、３ｍｍ（３Ｃと称す）、４ｍｍ（４Ｃと称す）、５ｍｍ（５Ｃと称す）、６ｍｍ（６Ｃと称す）とした。
(Example 3)
The slurry for sanitary ware body prepared in Example 1 was poured into a plaster mold having a chamfered bead on the joint surface and cast and formed, and two molded products of length × width × thickness = 100 × 100 × 10 mm (kad chamfering) were formed. The molded body was bonded using the adhesive slurry prepared in Example 1 so that the chamfered portions of the molded body were opposed to each other, and corrected so that the bonded portion became the same surface, and dried at 55 ° C. overnight. The glaze slurry prepared in Example 1 was applied to the surface of the bonded body by a spray coating method, and dried at room temperature. Subsequently, a sample was obtained by firing the dried molded body at 1100 to 1200 ° C. while keeping the joining surface parallel to the floor surface. The chamfer dimensions were 2 mm (referred to as 2C), 3 mm (referred to as 3C), 4 mm (referred to as 4C), 5 mm (referred to as 5C), and 6 mm (referred to as 6C) in both the thickness direction and the joining surface direction of the molded body. .
得られた試料について実施例１と同様に評価した。接合部の最大段差を表３に示す。 The obtained sample was evaluated in the same manner as in Example 1. Table 3 shows the maximum step at the joint.
（実施例４）
実施例１で調製した衛生陶器素地用泥漿を、接合面に当たるカドを丸み付けした石膏型に流し込んで鋳込み成形を行い、縦×横×厚み＝１００×１００×１０ｍｍ（カド丸み付け）の成形体２枚作製し、実施例１で調製した接着用泥漿を用いて前記成形体の丸み部が相対するように接合し、接合部が同一面となるように修正した後、５５℃で一晩乾燥し、実施例１で調製した釉薬スラリーを前記接合した成形体の表面にスプレーコーティング法により塗布し、室温で乾燥させた。続いて、この乾燥した成形体を接合面が床面と平行になるように保持したまま、１１００〜１２００℃で焼成することにより試料を得た。丸み付け寸法は、半径２ｍｍ（２Ｒと称す）、３ｍｍ（３Ｒと称す）、４ｍｍ（４Ｒと称す）、５ｍｍ（５Ｒと称す）、６ｍｍ（６Ｒと称す）とした。
(Example 4)
The slurry for sanitary ware body prepared in Example 1 was poured into a plaster mold having rounded cad hits on the joint surface and cast and formed, and a vertical x horizontal x thickness = 100 x 100 x 10 mm (quad rounded). Two sheets were prepared and joined using the adhesive slurry prepared in Example 1 so that the rounded portions of the molded bodies were opposed to each other, modified so that the joined portions became the same surface, and then dried at 55 ° C. overnight. Then, the glaze slurry prepared in Example 1 was applied to the surface of the joined molded body by a spray coating method, and dried at room temperature. Subsequently, a sample was obtained by firing the dried molded body at 1100 to 1200 ° C. while keeping the joining surface parallel to the floor surface. The rounding dimensions were a radius of 2 mm (referred to as 2R), 3 mm (referred to as 3R), 4 mm (referred to as 4R), 5 mm (referred to as 5R), and 6 mm (referred to as 6R).
得られた試料について実施例１と同様に評価した。接合部の最大段差を表３に示す。 The obtained sample was evaluated in the same manner as in Example 1. Table 3 shows the maximum step at the joint.
（実施例５）
実施例１で調製した衛生陶器素地用泥漿を接合面に当たるカドを丸み付けした石膏型に流し込んで鋳込み成形を行い、縦×横×厚み＝１００×１００×１０ｍｍ且つ一辺に半径３ｍｍの丸みが付けられた成形体を２枚作製し、実施例１よりもＡｌ２Ｏ３量を増加させて２５重量％とした接着用泥漿を用いて前記成形体の丸み部が相対するように接合し、室温で１時間放置した後、接合部が同一面となるように修正した。次に、５５℃で一晩乾燥し、再度接合部が同一面となるように修正した後、実施例１で調製した釉薬スラリーを前記接合した成形体の表面にスプレーコーティング法により塗布し、室温で乾燥させた。続いて、この乾燥した成形体を接合面が床面と平行になるように保持したまま、１１００〜１２００℃で焼成することにより試料を得た。
(Example 5)
The slurry for sanitary ware body prepared in Example 1 was poured into a plaster mold with rounded cad to hit the joint surface and cast and molded, and the length × width × thickness = 100 × 100 × 10 mm and a radius of 3 mm on each side. Two pieces of the obtained molded body were produced, and they were joined so that the rounded portions of the molded bodies were opposed to each other using an adhesive slurry in which the amount of Al 2 O 3 was increased to 25% by weight as compared with Example 1, and room temperature was applied. And then left for 1 hour to correct the joints so that they were on the same plane. Next, after drying at 55 ° C. overnight and correcting again so that the joint portion becomes the same surface, the glaze slurry prepared in Example 1 was applied to the surface of the joined molded body by a spray coating method, And dried. Subsequently, a sample was obtained by firing the dried molded body at 1100 to 1200 ° C. while keeping the joining surface parallel to the floor surface.
得られた試料について実施例１と同様に評価した。接合部の最大段差を表３に示す。 The obtained sample was evaluated in the same manner as in Example 1. Table 3 shows the maximum step at the joint.
（実施例６）
便鉢部およびリム部の外周面側に半径３ｍｍの丸みが形成されるようにした石膏型において、予め前記丸み部分に白色ワセリンを塗布しておくことにより、石膏型の丸み部分のみ吸水性が低下するようにした。実施例１で調製した衛生陶器素地用泥漿を前記石膏型に流し込んで鋳込み成形を行い、縦×横×厚み＝１００×１００×１０ｍｍ（カド丸み付け）の成形体を２枚作製し、実施例１で調製した接着用泥漿を用いて前記成形体の丸み部が相対するように接合し、室温で１時間放置した後、接合部が同一面となるように修正した。次に、５５℃で一晩乾燥し、再度接合部が同一面となるように修正した後、実施例１で調製した釉薬スラリーを前記接合した成形体の表面にスプレーコーティング法により塗布し、室温で乾燥させた。続いて、この乾燥した成形体を接合面が床面と平行になるように保持したまま、１１００〜１２００℃で焼成することにより試料を得た。
(Example 6)
In a gypsum mold in which roundness having a radius of 3 mm is formed on the outer peripheral surface side of the toilet bowl portion and the rim portion, white petrolatum is applied to the rounded portion in advance, so that only the rounded portion of the gypsum mold has water absorbency. It was made to fall. The slurry for sanitary ware body prepared in Example 1 was poured into the plaster mold and cast-molded to prepare two molded articles of length × width × thickness = 100 × 100 × 10 mm (rounded with a quad). Using the adhesive slurry prepared in 1 above, the molded bodies were joined so that the rounded portions faced each other, left at room temperature for 1 hour, and then modified so that the joints became the same surface. Next, after drying at 55 ° C. overnight and correcting again so that the joint portion becomes the same surface, the glaze slurry prepared in Example 1 was applied to the surface of the joined molded body by a spray coating method, And dried. Subsequently, a sample was obtained by firing the dried molded body at 1100 to 1200 ° C. while keeping the joining surface parallel to the floor surface.
得られた試料について実施例１と同様に評価した。接合部の最大段差を表３に示す。 The obtained sample was evaluated in the same manner as in Example 1. Table 3 shows the maximum step at the joint.
（実施例７）
実施例１で調製した衛生陶器素地用泥漿を接合面に当たるカドを丸み付けした石膏型に流し込んで鋳込み成形を行い、縦×横×厚み＝１００×１００×１０ｍｍ且つ一辺に半径２ｍｍの丸みが付けられた成形体を２枚作製し、そのうち１枚の接着面の略中央にφ１ｍｍの溝を後加工により形成した。実施例１で調製した接着用泥漿に炭酸ナトリウム２．５重量％を外添加した泥漿を用いて前記成形体の丸み部が相対するように接合し、室温で１時間放置した後、接合部が同一面となるように修正した。次に、５５℃で一晩乾燥し、再度接合部が同一面となるように修正した後、実施例１で調製した釉薬スラリーを前記接合した成形体の表面にスプレーコーティング法により塗布し、室温で乾燥させた。続いて、この乾燥した成形体を接合面が床面と平行になるように保持したまま、１１００〜１２００℃で焼成することにより試料を得た。
(Example 7)
The slurry for sanitary ware body prepared in Example 1 was poured into a plaster mold having a rounded cad to hit the joint surface and cast and molded, and the length × width × thickness = 100 × 100 × 10 mm and a radius of 2 mm on each side. Two molded articles were produced, and a groove having a diameter of 1 mm was formed at the approximate center of one of the bonded surfaces by post-processing. Using a slurry prepared by externally adding 2.5% by weight of sodium carbonate to the bonding slurry prepared in Example 1, the molded bodies were joined so that the rounded portions faced each other, and left at room temperature for 1 hour. Modified to be the same plane. Next, after drying at 55 ° C. overnight and correcting again so that the joint portion becomes the same surface, the glaze slurry prepared in Example 1 was applied to the surface of the joined molded body by a spray coating method, And dried. Subsequently, a sample was obtained by firing the dried molded body at 1100 to 1200 ° C. while keeping the joining surface parallel to the floor surface.
得られた試料について実施例１と同様に評価した。接合部の最大段差を表３に示す。 The obtained sample was evaluated in the same manner as in Example 1. Table 3 shows the maximum step at the joint.
（実施例８）
実施例１で調製した衛生陶器素地用泥漿を接合面に当たるカドを丸み付けした石膏型に流し込んで鋳込み成形を行い、縦×横×厚み＝１００×１００×１０ｍｍ且つ一辺に半径２ｍｍの丸みが付けられた成形体を２枚作製し、そのうち１枚の接着面の略中央にφ１ｍｍの溝を後加工により形成した。実施例１で調製した接着用泥漿にドロマイトを３．５重量％を外添加した泥漿を用いて前記成形体の丸み部が相対するように接合し、室温で１時間放置した後、接合部が同一面となるように修正した。次に、５５℃で一晩乾燥し、再度接合部が同一面となるように修正した後、実施例１で調製した釉薬スラリーを前記接合した成形体の表面にスプレーコーティング法により塗布し、室温で乾燥させた。続いて、この乾燥した成形体を接合面が床面と平行になるように保持したまま、１１００〜１２００℃で焼成することにより試料を得た。
(Example 8)
The slurry for sanitary ware body prepared in Example 1 was poured into a plaster mold having a rounded cad to hit the joint surface and cast and molded, and the length × width × thickness = 100 × 100 × 10 mm and a radius of 2 mm on each side. Two molded articles were produced, and a groove having a diameter of 1 mm was formed at the approximate center of one of the bonded surfaces by post-processing. Using a slurry obtained by externally adding 3.5% by weight of dolomite to the bonding slurry prepared in Example 1, the molded bodies were joined so that the rounded portions face each other. Modified to be the same plane. Next, after drying at 55 ° C. overnight and correcting again so that the joint portion becomes the same surface, the glaze slurry prepared in Example 1 was applied to the surface of the joined molded body by a spray coating method, And dried. Subsequently, a sample was obtained by firing the dried molded body at 1100 to 1200 ° C. while keeping the joining surface parallel to the floor surface.
得られた試料について実施例１と同様に評価した。接合部の最大段差を表３に示す。 The obtained sample was evaluated in the same manner as in Example 1. Table 3 shows the maximum step at the joint.
（実施例９）
実施例１で調製した衛生陶器素地用泥漿を接合面に当たるカドを丸み付けした石膏型に流し込んで鋳込み成形を行い、縦×横×厚み＝１００×１００×１０ｍｍ且つ一辺に半径２ｍｍの丸みが付けられた成形体を２枚作製し、そのうち１枚の接着面の略中央にφ１ｍｍの溝を後加工により形成した。実施例１で調製した接着用泥漿に塩化マグネシウム１０重量％を外添加した泥漿を用いて前記成形体の丸み部が相対するように接合し、室温で１時間放置した後、接合部が同一面となるように修正した。次に、５５℃で一晩乾燥し、再度接合部が同一面となるように修正した後、実施例１で調製した釉薬スラリーを前記接合した成形体の表面にスプレーコーティング法により塗布し、室温で乾燥させた。続いて、この乾燥した成形体を接合面が床面と平行になるように保持したまま、１１００〜１２００℃で焼成することにより試料を得た。
(Example 9)
The slurry for sanitary ware body prepared in Example 1 was poured into a plaster mold with a rounded cad to hit the joint surface and cast and molded, and the length × width × thickness = 100 × 100 × 10 mm and a radius of 2 mm on each side. Two molded articles were produced, and a groove having a diameter of 1 mm was formed at the approximate center of one of the bonded surfaces by post-processing. The molded body was bonded to the bonding slurry prepared in Example 1 using a slurry obtained by externally adding 10% by weight of magnesium chloride so that the rounded portions of the formed bodies were opposed to each other, and allowed to stand at room temperature for 1 hour. It was corrected to become. Next, after drying at 55 ° C. overnight and correcting again so that the joint portion becomes the same surface, the glaze slurry prepared in Example 1 was applied to the surface of the joined molded body by a spray coating method, And dried. Subsequently, a sample was obtained by firing the dried molded body at 1100 to 1200 ° C. while keeping the joining surface parallel to the floor surface.
得られた試料について実施例１と同様に評価した。接合部の最大段差を表３に示す。 The obtained sample was evaluated in the same manner as in Example 1. Table 3 shows the maximum step at the joint.
（実施例１０）
実施例１で調製した衛生陶器素地用泥漿を接着面に加工を施した石膏型に流し込んで鋳込み成形を行い、縦×横×厚み＝１００×１００×１０ｍｍ且つ一辺が長手方向に３ｍｍ、厚み方向に３ｍｍ突出した成形体を２枚作製し、そのうち１枚の接着面の略中央にφ１ｍｍの溝を後加工により形成した。実施例９で使用した接着用泥漿を用いて前記成形体の突出部が相対するように接合し、室温で１時間放置した後、接合部が同一面となるように修正した。次に、５５℃で一晩乾燥し、再度接合部が同一面となるように修正した後、実施例１で調製した釉薬スラリーを前記接合した成形体の表面にスプレーコーティング法により塗布し、室温で乾燥させた。続いて、この乾燥した成形体を接合面が床面と平行になるように保持したまま、１１００〜１２００℃で焼成することにより試料を得た。
(Example 10)
The slurry for sanitary ware body prepared in Example 1 was poured into a gypsum mold having a processed adhesive surface, and cast and molded. Length × width × thickness = 100 × 100 × 10 mm, one side being 3 mm in the longitudinal direction, and the thickness direction. In this case, two molded articles protruding by 3 mm were prepared, and a groove of φ1 mm was formed at the approximate center of one of the bonded surfaces by post-processing. Using the bonding slurry used in Example 9, the moldings were joined so that the protruding portions faced each other, left at room temperature for 1 hour, and then modified so that the joining portions became the same surface. Next, after drying at 55 ° C. overnight and correcting again so that the joint portion becomes the same surface, the glaze slurry prepared in Example 1 was applied to the surface of the joined molded body by a spray coating method, And dried. Subsequently, a sample was obtained by firing the dried molded body at 1100 to 1200 ° C. while keeping the joining surface parallel to the floor surface.
得られた試料について実施例１と同様に評価した。接合部の最大段差を表３に示す。 The obtained sample was evaluated in the same manner as in Example 1. Table 3 shows the maximum step at the joint.
（実施例１１）
便鉢部およびリム部の外周面側に半径２ｍｍの丸みが形成されるようにした石膏型において、予め前記丸み部分にＡｌ２Ｏ３量を３０％に調整した低濃度泥漿を塗布しておくことにより、得られる成形体の丸み部分付近の焼成収縮が小さくなるようにした。実施例１で調製した衛生陶器素地用泥漿を石膏型に流し込んで鋳込み成形を行い、縦×横×厚み＝１００×１００×１０ｍｍ且つ一辺に半径２ｍｍの丸みが付けられた成形体を２枚作製し、そのうち１枚の接着面の略中央にφ１ｍｍの溝を後加工により形成した。実施例９で使用した接着用泥漿を用いて前記成形体の丸み部が相対するように接合し、室温で１時間放置した後、接合部が同一面となるように修正した。次に、５５℃で一晩乾燥し、再度接合部が同一面となるように修正した後、実施例１で調製した釉薬スラリーを前記接合した成形体の表面にスプレーコーティング法により塗布し、室温で乾燥させた。続いて、この乾燥した成形体を接合面が床面と平行になるように保持したまま、１１００〜１２００℃で焼成することにより試料を得た。
(Example 11)
In a gypsum mold in which roundness having a radius of 2 mm is formed on the outer peripheral surface side of the toilet bowl portion and the rim portion, low-concentration slurry in which the amount of Al 2 O 3 is adjusted to 30% is previously applied to the rounded portion. Thereby, the firing shrinkage in the vicinity of the round portion of the obtained molded article was reduced. The slurry for sanitary ware body prepared in Example 1 was poured into a gypsum mold and cast and molded to produce two molded bodies having a length × width × thickness = 100 × 100 × 10 mm and a radius of 2 mm on each side. A groove having a diameter of 1 mm was formed at the approximate center of one of the adhesive surfaces by post-processing. Using the bonding slurry used in Example 9, the moldings were joined so that the rounded portions faced each other, left at room temperature for 1 hour, and then modified so that the joints became the same surface. Next, after drying at 55 ° C. overnight and correcting again so that the joint portion becomes the same surface, the glaze slurry prepared in Example 1 was applied to the surface of the joined molded body by a spray coating method, And dried. Subsequently, a sample was obtained by firing the dried molded body at 1100 to 1200 ° C. while keeping the joining surface parallel to the floor surface.
得られた試料について実施例１と同様に評価した。接合部の最大段差を表３に示す。 The obtained sample was evaluated in the same manner as in Example 1. Table 3 shows the maximum step at the joint.
（比較例１）
実施例１で調製した衛生陶器素地用泥漿を石膏型に流し込んで鋳込み成形を行い、縦×横×厚み＝１００×１００×１０ｍｍの成形体を２枚作製し、実施例１で調製した接着用泥漿を用いて前記成形体の一辺が相対するように接合し、室温で１時間放置した後、接合部が同一面となるように修正した。次に、５５℃で一晩乾燥し、再度接合部が同一面となるように修正した後、実施例１で調製した釉薬スラリーを前記接合した成形体の表面にスプレーコーティング法により塗布し、室温で乾燥させた。続いて、この乾燥した成形体を接合面が床面と平行になるように保持したまま、１１００〜１２００℃で焼成することにより試料を得た。
(Comparative Example 1)
The slurry for sanitary ware body prepared in Example 1 was poured into a gypsum mold and cast and molded to produce two molded articles having a length × width × thickness = 100 × 100 × 10 mm. Using a slurry, the molded bodies were joined so that one side faces each other, left at room temperature for 1 hour, and then modified so that the joints became the same surface. Next, after drying at 55 ° C. overnight and correcting again so that the joint portion becomes the same surface, the glaze slurry prepared in Example 1 was applied to the surface of the joined molded body by a spray coating method, And dried. Subsequently, a sample was obtained by firing the dried molded body at 1100 to 1200 ° C. while keeping the joining surface parallel to the floor surface.
得られた試料について実施例１と同様に評価した。接合部の最大段差を表３に示す。 The obtained sample was evaluated in the same manner as in Example 1. Table 3 shows the maximum step at the joint.
表３から、試験片の接合部の切除、カドを面取りまたは丸み形状とし、切り欠くこと、更には接着用泥漿を改良することによって、焼成後に生じる接合部の凸状の段差を従来よりも小さくできることが分かる。従って、本発明の面取りおよび丸み形状ないし改良した接着用泥漿を大便器に適用することにより、便鉢部とリム部の接合部外周面に生じる段差を低減することができ、外観上の見栄えの良好な衛生陶器を製造することができるようになると考えられる。 From Table 3, it can be seen that by removing the joint of the test piece, chamfering or rounding the corners, notching, and further improving the adhesive slurry, the convex step of the joint after firing is made smaller than before. You can see what you can do. Therefore, by applying the chamfered and rounded or improved adhesive slurry of the present invention to a toilet bowl, it is possible to reduce the level difference generated on the outer peripheral surface of the joint portion between the toilet bowl portion and the rim portion. It is thought that good sanitary ware can be manufactured.
１…便鉢部
３…便鉢部の上周縁の接合面
４…リム部
６…リム部の下面の接合面
７…便鉢部接合面の面取り形成部
８…リム部接合面の面取り形成部
９…便鉢部接合面の丸み形成部
１０…リム部接合部の丸み形成部
１１…便鉢部接合部の外周面
１２…リム部接合部の外周面
DESCRIPTION OF SYMBOLS 1 ... Toilet bowl part 3 ... Joint surface of upper peripheral edge of toilet bowl part 4 ... Rim part 6 ... Joint surface of lower surface of rim part 7 ... Chamfer formation part of toilet bowl joint surface 8 ... Chamfer formation part of rim joint surface 9: roundness forming part of stool joint part 10 ... roundness forming part of rim part joint part 11 ... outer peripheral surface of stool part joint part 12 ... outer peripheral surface of rim part joint part
Claims (11)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004065008A JP2004306594A (en) | 2003-03-27 | 2004-03-09 | Method for manufacturing sanitary ware |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003088781 | 2003-03-27 | ||
| JP2004065008A JP2004306594A (en) | 2003-03-27 | 2004-03-09 | Method for manufacturing sanitary ware |
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| JP2004306594A true JP2004306594A (en) | 2004-11-04 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012010580A1 (en) * | 2012-05-18 | 2013-11-21 | Duravit Aktiengesellschaft | Free standing toilet with cast cistern |
| CN111633782A (en) * | 2020-05-21 | 2020-09-08 | 佛山市鸣门卫浴科技有限公司 | High-pressure slip casting production method for sanitary ware and sanitary ware |
-
2004
- 2004-03-09 JP JP2004065008A patent/JP2004306594A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012010580A1 (en) * | 2012-05-18 | 2013-11-21 | Duravit Aktiengesellschaft | Free standing toilet with cast cistern |
| DE102012010580B4 (en) * | 2012-05-18 | 2016-08-18 | Duravit Aktiengesellschaft | Free standing toilet with cast cistern |
| US9481992B2 (en) | 2012-05-18 | 2016-11-01 | Duravit Aktiengesellschaft | Freestanding toilet with cast-on toilet tank |
| CN111633782A (en) * | 2020-05-21 | 2020-09-08 | 佛山市鸣门卫浴科技有限公司 | High-pressure slip casting production method for sanitary ware and sanitary ware |
| CN111633782B (en) * | 2020-05-21 | 2021-11-02 | 佛山市鸣门卫浴科技有限公司 | High-pressure slip casting production method for sanitary ware and sanitary ware |
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