JP2016054800A - Cinerary urn and its manufacturing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cinerary urn that can be easily manufactured at low cost without using a biodegradable material.SOLUTION: A cinerary urn 1 is configured to be naturally collapsed by moisture absorption operation and returned to soil. The cinerary urn includes an urn body 4 and a lid 5 covered on an upper end opening part 3 of the urn body. Each of the urn body 4 and the lid 5 is a member in the unfired state while a china clay is formed and dried. The china clay maintains a self-shape retention in the room of a general house, and includes hygroscopicity of absorbing the moisture in the soil and losing the self-shape retention when buried in the soil. The lid 5 functions as a weight to crush the urn body 4 in which the self-shape retention is decreased by the moisture absorption.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an urn, and more particularly to an urn that naturally collapses due to moisture and returns to the soil when placed in a tomb ossuary and a method for producing the same.

  The urn is generally made of earthenware. Pottery urns remain semi-permanently after being placed in the grave ossuary (underground). When the ossuary site becomes narrow, etc., it is necessary to dispose of the bone by crushing it.

  In order to eliminate such inconvenience, Patent Document 1 proposes an urn made of biodegradable plastic as a raw material. In Patent Document 2, it is proposed that the outer peripheral portion other than the bottom surface of the urn made from a biodegradable raw material is covered with Japanese paper. Since these urns are decomposed by microorganisms or the like in the soil after being put in the grave, it is possible to eliminate inconveniences such as troubles in the location of the urns.

Japanese Patent Laid-Open No. 10-165463 Japanese Patent No. 5404868

  The biodegradable urn needs to be manufactured using a biodegradable material, which is difficult to manufacture compared to a general ceramic urn, and has a problem of high manufacturing cost. In particular, as described in Patent Document 2, when the outer periphery of the urn made from a biodegradable raw material is coated with Japanese paper, the production takes time and the manufacturing cost increases. End up.

  In addition, depending on the bereaved family, there is a case where it is desired that the original state is maintained without being disassembled during a predetermined period after bone delivery. In antiques made of biodegradable materials, decomposition proceeds by microorganisms in the soil, so the period of time until they are decomposed and returned to the soil is indefinite.

  In view of these points, an object of the present invention is to propose an urn that can be easily and inexpensively manufactured without using a biodegradable material and a method for manufacturing the same.

In order to solve the above problems, the present invention is an urn that naturally collapses due to moisture absorption and returns to the soil,
A casket body and a lid that covers the upper end opening of the casket body,
Each of the cocoon body and the lid is a member in an unfired state in which the clay is molded and dried.
The porcelain clay maintains its self-holding property in a humidity state lower than the first humidity in a room of a general house and is left in a humidity state higher than the first humidity in the soil for a predetermined period or more. And has a hygroscopic property that absorbs moisture and loses its self-holding property,
The lid is characterized in that it is a weight for crushing the bag main body whose self-shape retaining property has been lowered due to moisture absorption.

In the present invention, porcelain clay is used as a material for producing an urn as in the prior art, but it is used in an unfired state after being dried after molding. An unfired porcelain urn having a predetermined hygroscopicity absorbs moisture and becomes brittle when buried in the soil, and gradually loses its self-holding property and collapses. In general, the humidity in the grave ossuary, etc. is higher than the indoor humidity of ordinary houses, and its fluctuation is small. Therefore, if the hygroscopicity of the unfired porcelain urns is set appropriately, the self-retaining property will be maintained until the predetermined period has elapsed (the original shape is maintained without collapse), and the period has elapsed. After that, it gradually collapses and returns to the soil.

  In the present invention, the lid placed on the upper end of the bag body is caused to function as a weight having a predetermined weight. That is, a lid having a weight twice or more is used, for example, compared to a lid of a general ceramic antique of the same shape and size. As a result, when the self-retaining property of the bag main body decreases to some extent due to moisture absorption, the bag main body starts to collapse before the cover due to the weight of the cover. Specifically, the lower part facing the soil in the main body absorbs moisture earlier than the other parts and starts to collapse from the bottom side. In this way, the lid is covered on the main body of the heel and the remains in it that gradually collapse from the lower part. In this state, moisture absorption and natural collapse of the bag main body and the lid proceed, and decomposition of the remains proceeds in a state covered with the lid. Therefore, it is avoided that the remains are exposed from the urn that has collapsed in the ossuary.

  Furthermore, by appropriately setting the hygroscopicity of the heel and the weight of the lid, it is possible to adjust to some extent the time when the urn collapses.

It is the perspective view and sectional drawing which show an example of the urn to which this invention is applied.

  Embodiments of an urn to which the present invention is applied and a method for manufacturing the same will be described below with reference to the drawings.

  Fig.1 (a) is a perspective view which shows the urn based on Embodiment, FIG.1 (b) is the longitudinal cross-sectional view. The urn 1 has a shape similar to that of a general urn, and a heel body 4 in which the upper end of a cylindrical body 2 with a bottom 2 a is a circular upper end opening 3, and the heel body 4 It has a circular shallow dish-shaped lid 5 that covers the upper end opening 3 and seals the upper end opening 3.

  The cocoon body 4 and the lid 5 are unfired members obtained by molding and drying ceramic clay. As porcelain clay, if it is buried in the soil for a period exceeding a predetermined period, it uses porcelain clay that absorbs moisture in the soil and loses its self-holding property. Further, as the lid 5, a heavy and thick one that functions as a weight capable of crushing the heel body 4 whose self-holding property has decreased due to moisture absorption is used.

  As the clay, for example, Shigaraki white clay can be used. You may use porcelain other than Shigaraki white clay. For example, ceramic clay with a moisture absorption equivalent to or better than Shigaraki white clay is used. Or in order to adjust the required period until the hygroscopic state of the main body 4 progresses and the self-shape retaining property is lost and begins to collapse, the porosity of the clay may be adjusted to increase or decrease the hygroscopic property. For example, the hygroscopicity can be lowered by using ceramic clay with relatively fine meshes, and the hygroscopicity can be increased by using ceramic clay with relatively coarse meshes. Alternatively, the hygroscopicity can be changed by mixing the granular material with the clay and adjusting the porosity of the clay. On the other hand, for example, red clay containing a large amount of iron can be used as the clay. When using porcelain containing a lot of iron, the bone reacts with the iron contained in the porcelain, so that the bone can be decomposed and returned to the soil more quickly than when using porcelain with less iron.

In order to increase the weight of the lid 5, the thickness of the lid 5 may be increased. As the porcelain clay, the porcelain body porcelain used for the production of the main body 4 (first porcelain) and the lid porcelain used for the production of the lid 5 (second porcelain) may be different types. In this case, the unit volume weight of the porcelain for the lid is made larger than the unit volume weight of the clay for the main body. As a result, the heavy lid 5 can be manufactured, so that the lid 5 can effectively function as a weight. Further, a heavy weight portion is integrally formed on the lid 5, or a weight member such as a stone functioning as a weight is mixed with the lid 5, or a weight member such as a stone is placed on the lid 5. You may do it.

  Also, when different porcelain is used as the porcelain clay for the lid body 5 and the porcelain clay for the lid 5, the moisture absorption rate of the clay for the lid body is compared with the moisture absorption rate of the clay for the lid. Can be made larger. Conversely, the moisture absorption rate of the porcelain clay can be made smaller than the moisture absorption rate of the lid clay.

  Furthermore, if the lid 5 is a lid having an outer diameter larger than that of the heel body 4, the state in which the heel body 4 that starts to collapse first and the remains inside thereof can be surely covered with the lid 5 can be formed.

  In the above example, the shape of the urn 1 is a commonly used cylindrical shape, but the shape of the urn can be various shapes such as a polygonal shape.

1 urn 2 body 2a bottom 3 upper end opening 4 heel body 5 lid

Claims (7)

An antique that naturally collapses due to moisture absorption and returns to the soil.
A casket body and a lid that covers the upper end opening of the casket body,
Each of the cocoon main body and the lid is an unfired member formed by molding and drying ceramic clay,
The porcelain clay maintains its self-holding property in a humidity state lower than the first humidity in a room of a general house and is left in a humidity state higher than the first humidity in the soil for a predetermined period or more. And has a hygroscopic property that absorbs moisture and loses its self-holding property,
The urn according to claim 1, wherein the lid is a weight for crushing the body of the heel whose self-holding property has decreased due to moisture absorption.   The antique according to claim 1, wherein the porcelain clay is Shigaraki white clay or porcelain clay having a hygroscopicity equal to or higher than the Shigaraki white clay.   The urn according to claim 1 or 2, wherein the porcelain is mixed with a granular material for adjusting the porosity of the porcelain to increase or decrease the hygroscopicity. The gutter body is made from a first porcelain and the lid is made from a second porcelain;
The urn according to claim 1, 2 or 3, wherein the unit volume weight of the second porcelain is larger than the unit volume weight of the first porcelain. The gutter body is made from a first porcelain and the lid is made from a second porcelain;
The urn according to any one of claims 1 to 4, wherein the first porcelain clay and the second porcelain clay have mutually different moisture absorption rates.   The urn according to any one of claims 1 to 5, wherein a weight member is mixed or attached to the lid. A method for producing an urn that has been stored in the ossuary so that the urn is naturally destroyed by the hygroscopic action of the urn and returned to the soil.
The said urn is the urn according to any one of claims 1 to 6,
Based on the humidity in the ossuary that houses the urn, adjust at least one of the hygroscopicity of the urn body and the weight of the lid,
A method for producing an urn comprising adjusting the time when the urn body of the urn stored in the ossuary starts to be crushed by the weight of the lid.

Images