JPS63139505A - Ceramic roll body for forming wristwatch band and band formed - Google Patents

Abstract

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

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a ceramic piece used for manufacturing a wrist watch band and a ceramic watch band constructed from the piece.

[Conventional technology]

Conventionally, materials such as metal, leather, and plastic have been used for wristwatch bands.

In particular, the piece bodies, which are connected in a chain to form a band, are generally made from metal materials, but they can only be made in a certain shape and color. That is, it is desired to be able to accommodate various designs such as shapes and colors.

[Problems to be Solved by the Invention] The present invention focuses on the above-mentioned problems and makes use of the texture and luxury of ceramic to fully meet the diversifying tastes of users by making the watch band piece from ceramic material. To provide an excellent piece for a wristwatch band and a wristwatch band constructed from the piece.

[Means for Solving the Problems] As a result of the inventors' attempts to produce various watch band pieces, the present inventors have found pieces of various shapes and colors that are made of ceramic material and have a high quality feel and feel. The present invention was achieved based on the discovery that it is possible to produce a

That is, the watch band piece of the present invention is characterized in that it is made of a ceramic material consisting of alumina, zirconia, silicon carbide, or silicon nitride. Generally, such ceramic materials are ground into a fine powder to an average particle size in the range of about 0.05 to IO μm, particularly in the range of about 0.1 to 0.5 μm, and the ceramic powder is combined with a suitable binder such as polyvinyl alcohol, polyethylene oxide, etc. etc. to make a ceramic compound. The formulation may further contain suitable coloring agents such as chromium oxide, nickel oxide, cobalt oxide, manganese oxide, etc., singly or in a mixture, to produce any desired color, i.e., a single color, a mixed color or a variety of colors. It is done by making pieces colored in colored patterns.

The ceramic compound prepared by blending as described above is pressure-molded using an appropriate pressure machine to give an appropriate shape, e.g.
A ceramic piece product is obtained by forming an elliptical molded body of the Hitotsubashi example shown in the figure and firing this molded body at a temperature of about 1300 to 1900°C. Connecting pin insertion holes 2 for connecting the pieces to each other are provided in this piece 1 near both ends of the piece 1 so as to pass through the piece body. These insertion holes 2 can be formed by suitable machining after molding the bridge body, but it is preferable to form them at the same time when the bridge body is press-molded.

The piece body is not limited to an elliptical shape, but can be extremely easily made into any arbitrary shape such as a plate shape or a wavy shape by pressure molding.

The piece bodies of the present invention formed in this way are connected to each other using pins (for example, metal bottles) to connect the pieces together, as shown in FIG.
It can be connected in a band shape to form a watch band using commonly known conventional connecting means.

Furthermore, the ceramic piece made as described above is combined with a metal piece, that is, the ceramic piece is connected to each other such that the ceramic piece is placed on the inside and the metal piece is placed on the outside. A composite watch band can be produced by combining them.

Furthermore, in addition to simple oxides such as terconia, composite oxides such as zircon, spinel, and mullite can be advantageously used as ceramic materials. You can use the money you spent to obtain pieces with unusual designs.

[Effects of the Invention] As described above, the present invention is capable of pressurizing various pieces that have arbitrary shapes and colors and that take advantage of the luxurious feel of ceramic by making watch band pieces from ceramic materials. It can be manufactured extremely easily and inexpensively by molding, and by using this ceramic piece, it was possible to manufacture an excellent watch band that adapts to the user's preferences.

[Example 1] 2% polyvinyl alcohol was added as a binder to ittria partially stabilized zirconia having an average particle size of 0.5 μm, and the mixture was wet-mixed uniformly to prepare a ceramic compound, which was then granulated. This granulated material was pressurized using a cam press at a pressure of 1 ton/C1 m<2> to form an elliptical molded piece shown in FIG. This molded body was fired in air at 1450°C for 1 hour. This fired body was rotated in a bot mill for 1 hour with alumina particles of 0.5+nm to impart gloss to the surface, thereby obtaining a piece product of the present invention.

A ceramic watch band was manufactured by connecting the thus obtained ceramic pieces together in a band shape using a metal bottle using a common connecting means.

[Example 2] To alumina powder with an average particle size of 0.1 μm, 0.05% of magnesium sulfate was added as a particle growth inhibitor in terms of magnesia, and 4% of polyethylene oxide was added as a binder to this and mixed in a wet method. A ceramic blend was prepared using the same method, and this was appropriately granulated.

This granulated powder was pressed using a cam press at a pressure of 1 ton/CIn2 to form an elliptical molded body as shown in FIG. This molded body was calcined in air at 900°C for 1 hour, and then fired in vacuum at 1800°C for 2 hours to obtain a translucent alumina ceramic piece.

The ceramic pieces thus obtained were connected and assembled in the same manner as in Example 1 to produce a ceramic watch band.

Example 3 Four identical ceramic formulations were made as in Example 2. 1% each of chromium oxide, nickel oxide, cobalt oxide and manganese oxide as coloring agents, and alumina and powder were mixed into each of these formulations,
Various colored alumina powders were obtained by firing at 1400°C.

This alumina powder was mixed with the translucent alumina ceramic made in Example 2, pressure-molded in the same manner as in Example 1, and colored by heating at 1700°C in air for 2 hours to form translucent alumina ceramic pieces. I got a body. In this case, chromium was colored red, nickel green, cobalt blue and manganese maroon.

As in Example 1, the ceramic pieces colored in each color obtained in this way are combined with each other using metal pins to create a sense of color, and to create a luxurious impression made of gemstones with a good texture. We made a watch band that was designed to fit the needs of our customers.

[Brief explanation of the drawing]

1 is a perspective view of the ceramic piece body of the present invention, and FIG. 2 is an explanatory diagram showing the connected state of the ceramic piece body shown in FIG. 1. 1...Ceramic piece body 2...Connecting pin insertion hole 3
・・・Metal pin

Claims (2)

[Claims] (1) A ceramic piece for forming a wristwatch band, characterized in that it is made of a ceramic material selected from the group consisting of alumina, zirconia, silicon carbide, and silicon nitride. (2) A ceramic watch band characterized in that it is constructed by interconnecting ceramic pieces formed from a ceramic material selected from the group consisting of alumina, zirconia, silicon carbide, and silicon nitride.