JP5361829B2 - How to make a 3D specimen - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for easily preparing a sample with nice appearance when peeling off soil of the surface layer of remains using a silicone resin, fixing the soil to the surface of a resin molding and preparing a three-dimensional peeled sample of the remains. <P>SOLUTION: The silicone resin whose color after hardening is similar to that of the surface soil 101 of remains 10 is used as a liquid silicone resin to be applied to the surface of the remains 10. Thereby, when the silicone layer 12 covering over a molded resin layer 14 to which the surface soil 101 of the remains 10 is fixed is removed therefrom, even if the silicone resin entering among particles of sand is torn without being pulled out and remained as dots on the surface of the molding, the residual silicone resin is inconspicuous. The method can thus easily prepare the three-dimensional peeled sample with nice appearance. <P>COPYRIGHT: (C)2012,JPO&amp;INPIT

Description

  The present invention relates to a method for moving a remains found in excavation from a excavation site to a museum or the like.

  Remains such as dwellings, kilns, and graveholes built by humans in the past are valuable historical materials that show the traces of human activities at the time, and are cultural assets that are very useful for the development of archaeological and historical studies. It is. It is desirable to preserve such remains as academic materials while maintaining the original shape when excavated. It is also desirable to display it as an educational material that can be seen by many people.

  When the remains found in excavations are to be stored or displayed at the excavation site for a long period of time, a structure is required to protect the remains from wind and rain. However, due to factors such as the construction cost of the building and the intentions of the land owner, it is often difficult to realize it. Therefore, it has been conventionally performed that the remains are moved from the excavation site to a museum or the like and stored or displayed for a long time at the relocation site.

  As a method for relocating the remains, there is a method in which the ground soil constituting the remains is divided into blocks to be cut out and transported to a museum, where each block is restored and the structure is reproduced (Patent Document) 1). However, this method requires heavy equipment such as a crane to cut out and carry out the soil, which is very expensive. In addition, since the soil block is easily collapsed when it is cut out or moved, the excavated remains may not be faithfully reproduced at the relocation destination.

Another method for relocating the remains is as follows. First, a liquid silicone resin is applied to the surface of the remains at the excavation site and cured to mold the three-dimensional shape of the surface of the remains with the silicone resin. Next, the mold is removed from the remains, and the mold surface is coated with a synthetic resin and molded. Thereby, the replica which reproduced the three-dimensional shape of the remains surface with the synthetic resin is obtained.
However, this replica is a model in which the real remains made of soil are replaced with synthetic resin, and cannot be handled as the primary material of the excavated remains. In order to display in a museum, it is important to have not only the shape but also the color of reality. For this purpose, the surface of the model must be colored in the same color as the actual remains.

Other methods than the above are as follows. First, similarly to the above method, the remains of the excavation site are covered with silicone resin. Next, the silicone resin is peeled off from the remains. At this time, soil on the surface of the remains is adhered to the surface of the silicone resin. Thereby, the soil of the remains surface layer moves to the silicone resin side. At this time, the relics such as earthenware pieces, bones, tools, etc. appearing on the surface of the remains will be peeled off together with the soil on the remains, or they will be cured with tin foil etc. so that they will not adhere to the silicone resin. Two choices are possible. Particularly in the former case, it is desirable to use a silicone resin having a large physical strength at the time of solidification in order to make it easier to peel off the relics. Of course, such a silicone resin can also be expected to have an effect of easily stripping off soil particles, so it is used in the latter case (when the structure is cured with tin foil, etc.) or when the surface of the structure is covered only with soil. May be. Next, a silicone resin covered with the peeled soil is used as a mold, and a molding resin (for example, a polyester resin or an epoxy resin) having better adhesion to the soil particles than the silicone resin is applied thereto. Then, after the molding resin is cured, the silicone resin is removed. At this time, the soil particles (and relics) leave the silicone resin and remain on the surface of the molding resin having excellent adhesion. As a result, a three-dimensionally stripped specimen that is a molded product whose surface is covered with soil of the surface structure is obtained (see Non-Patent Documents 1 to 3).
In this method, the surface of the molded product is covered with the real soil that constitutes the surface layer of the remains, and furthermore, the positional relationship between the particles and relics of the soil is maintained in the state of the excavation site. It is possible to reproduce the remains more faithfully than the above method, and it is possible that the reproduced ones can be handled as the primary material of the remains. In addition, if the three-dimensional stripped specimen prepared by this method is displayed in a museum or the like, the visitor can enjoy the realism of the excavation site more than that produced by the other methods described above.

JP 2000-096548

Shinji Saito, Kei Masuda “3D Peeling and Replication of Remains Using Silicone” Abstracts of the 22nd Annual Conference of the Cultural Properties Conservation and Restoration Society, 2000, pp.130-131 Shinji Saito, Kenji Hata, Narunori Kanno, Kenki Nogami “Sculpture and Duplication of Remains Using Silicone 2” Proceedings of the 24th Annual Meeting of the Cultural Properties Conservation and Restoration Society, 2002, pp.164-165 Shigenori Kanno, Kenji Sugo, Atsushi Nishida “Utilization and Preservation of Three-Dimensional Peeling and Reproduction of Remains Using Silicone” Abstracts of the 24th Annual Meeting of the Japan Cultural Property Science Society, 2007, pp.334-335

  When the molding resin is applied to the silicone mold covered with soil on the surface of the remains by the above-mentioned peeling method, and the silicone resin is removed from the solidified molding resin, the silicone resin that has entered between the sand grains (on the molding resin surface) May be pulled out without being pulled out, and may remain in the form of dots on the surface of the molded product. In general, since the color of the silicone resin for molding is white or pink, especially when the earth is dark, the remaining silicone resin is easily noticeable, and the appearance when displayed is impaired. Thus, conventionally, the silicone resin remaining in the form of dots has been removed one by one by hand, but this operation is very laborious. Further, if a piece of silicone resin remains in the back of the gap between sand grains, it may be visible from the outside but cannot be removed by human hands.

  The present invention has been made in view of the above points, and the object of the present invention is to peel off the soil of the surface layer using silicone resin as described above and fix the soil to the surface of the resin molded product. Thus, an object of the present invention is to provide a method capable of easily producing a good-looking material when producing a three-dimensional specimen of a remains.

The method for producing a three-dimensional stripped specimen according to the present invention made to solve the above problems is as follows.
a) a step of applying a liquid silicone resin having a color similar to that of the soil of the surface layer of the remains on the surface of the remains to be cured, and curing;
b) removing the cured silicone resin from the remains, attaching the surface soil of the remains to the surface of the silicone resin,
c) The silicone resin is used as a silicone mold having a surface to which the soil is attached as a mold surface, and a molding resin having better adhesion to the particles constituting the soil than the silicone resin is used as the mold surface of the silicone mold. Applying and curing, and
d) removing the silicone resin from the molding resin while leaving the soil on the surface of the cured molding resin.

  In the method for producing a three-dimensional peeled specimen according to the present invention, when removing the silicone resin that covers the top surface of the resin molded product having the soil surface layer fixed on the surface, the silicone resin that has entered between the sand grains is not pulled out. Even if it tears and remains on the surface of the molded article, the remaining silicone resin is not noticeable because the color after curing of the silicone resin is similar to the soil surface soil. Therefore, it is possible to easily produce a three-dimensionally stripped specimen having a good appearance.

The figure which shows the process of the preparation method of the three-dimensional exfoliation specimen which is one Embodiment of this invention. Sectional drawing of the remains after pre-processing. Sectional drawing of the remains after silicone layer formation. Sectional drawing of the remains after backup layer formation. Cross-sectional view of the remains and the silicone mold after the stripping process. Sectional drawing of the silicone type | mold inverted up and down after the peeling process. Sectional drawing of the silicone type | mold after molding resin layer formation. Sectional drawing of the molding resin layer after demolding, a silicone layer, and a polyester layer.

  Hereinafter, a method for producing a three-dimensionally stripped specimen of a surface structure as an embodiment of the present invention will be described with reference to the drawings. The remains that are the subject of the present invention are those whose surface is mainly covered with soil, for example, remains such as dwellings, kilns, and grave holes. In addition, relics such as earthenware pieces, bones, tools, etc. may appear on a part of the surface of the remains.

  When stripping, first, the area and shape of the stripped portion are confirmed at the excavation site, and the amount of resin to be used, the number of mold divisions, etc. are determined (preliminary work step 1).

  Next, as shown in FIG. 2, a surface treatment agent 11 for improving the adhesion between the soil of the surface layer of the remains 10 and the silicone resin is applied to the surface of the remains 10 (pretreatment step 2). The surface treatment agent 11 is easy to chemically bond to both the inorganic soil particles and the organic silicone resin, and improves the adhesion between them. As such a thing, the silane coupling agent etc. which use a silicate ester as an active ingredient can be used, for example. In addition, if the remains of earthenware pieces, bones, tools, etc. appear on the surface of the remains 10 and leave them on the surface of the remains without peeling off, the surface of the remains is covered with tin foil and cured, and then the silicone resin Avoid sticking.

  Next, as shown in FIG. 3, a liquid silicone resin is applied to the surface of the remains 10 and cured to form a silicone layer 12 (silicone layer forming step 3). Here, a silicone resin having a color similar to that of the surface soil of the remains 10 (for example, a dark brown one) is used as the silicone resin. Further, when relics appear on the surface of the remains 10 and they are peeled off together with the soil of the surface of the remains, it is desirable to use a silicone resin having a large physical strength when solidified. Of course, such a silicone resin can also be expected to have an effect of facilitating the removal of soil particles, so if there are no relics appearing on the remains, or curing the remains appearing on the remains, only the surrounding soil is peeled off. It may be used in some cases. When the application area is large, the silicone resin is applied using a sprayer such as a mortar gun for spraying concrete.

  After the silicone resin is cured, as shown in FIG. 4, a resin such as polyester is applied onto the silicone layer 12 and cured, thereby forming a backup layer 13 for maintaining the shape of the silicone layer 12 ( Backup layer forming step 4). Further, a reinforcing frame (not shown) is attached thereon using square bars, steel frames, or the like.

  Next, the silicone layer 12 and the backup layer 13 are divided into sizes suitable for transportation, and they are removed from the remains 10 (see FIG. 5). At this time, the surface soil 101 of the remains 10 is attached to the surface of the silicone layer 12 and peeled off (stripping process 5). In the present embodiment, the surface soil 101 easily adheres to the silicone layer 12 and is easily peeled off by the action of the base treatment material 11 interposed between the surface soil 101 of the remains 10 and the silicone layer 12. In addition, since the silicone layer 12 and the backup layer 13 are in a state of being easily peeled off, in the peeling process 5, the backup layer 13 is first removed from the silicone layer 12 on the remains 10 and then the silicone layer 12 is removed from the remains 10. remove.

  Next, the silicone layer 12 (hereinafter referred to as the silicone mold 20) having the surface soil 101 adhered to the surface and the backup layer 13 are taken out from the excavation site and carried to the molding work site. At this time, a necessary amount of soil at the excavation site is collected and brought back for the finishing process 8 described later.

  In the molding work place, the divided backup layers 13 are arranged in a state of being inverted upside down from the state at the excavation site, and the silicone mold 20 is placed thereon (see FIG. 6). Since the silicone mold 20 is flexible, the shape at the excavation site cannot be maintained by itself, but by being placed on the backup layer 13 produced as described above at the excavation site, The shape is faithfully reproduced.

  Next, as shown in FIG. 7, a molding resin is applied to the mold surface of the silicone mold 20 (the surface covered with the surface soil 101) and cured to form a molding resin layer 14 (molding resin layer forming step 6). ). The molding resin used here has better adhesion to the particles constituting the surface soil 101 than the silicone resin, and is, for example, a polyester resin or an epoxy resin. Further, a reinforcing framework (not shown) is attached to the upper surface of the molded resin layer 14 using square bars, steel frames, or the like. Thereafter, the molded resin layer 14 is divided into sizes suitable for transportation and storage. The molded resin layer 14 may be a laminate of resin and glass fiber in order to improve the strength.

  Next, the entire laminate composed of the molded resin layer 14 and the like is turned upside down, and the silicone layer 12 and the backup layer 13 are removed from the molded resin layer 14 as shown in FIG. 8 (demolding step 7). At this time, the surface soil 101 is separated from the silicone layer 12 and remains on the surface of the molded resin layer 14 having excellent adhesion. As a result, a three-dimensional stripped specimen 30 whose surface is covered with the surface soil 101 of the remains 10 is obtained.

  In the demolding step, the silicone resin that has entered between the particles of the surface soil 101 may be torn off without being pulled out and may remain in the form of dots on the surface of the molded product. However, in this embodiment, since the color of the silicone resin after curing is the same color as the surface soil 101, the remaining silicone resin is not conspicuous.

  If there is a portion of the surface of the molded resin layer 14 that is not covered with the soil of the remains 10, the soil brought back from the excavation site is attached to the portion and corrected. Further, in order to prevent the soil on the surface of the molded resin layer 14 from peeling off, a transparent resin is sprayed on the surface, and the entire surface is covered with a resin coating. By these finishing steps 8, the three-dimensionally stripped specimen 30 is completed. The completed three-dimensional stripped specimen 30 is displayed in a museum or stored for a long time as academic material.

DESCRIPTION OF SYMBOLS 1 ... Prior work process 2 ... Pre-processing process 3 ... Silicone layer formation process 4 ... Backup layer formation process 5 ... Stripping process 6 ... Molding resin layer formation process 7 ... Demolding process 8 ... Finishing process 10 ... Remains 101 ... Surface soil DESCRIPTION OF SYMBOLS 11 ... Base-treatment agent 12 ... Silicone layer 13 ... Backup layer 14 ... Molding resin layer 20 ... Silicone type | mold 30 ... Three-dimensional exfoliation specimen

Claims (2)

a) a step of applying a liquid silicone resin having a color similar to that of the soil of the surface layer of the remains on the surface of the remains to be cured, and curing;
b) removing the cured silicone resin from the remains, attaching the surface soil of the remains to the surface of the silicone resin,
c) The silicone resin is used as a silicone mold having a surface to which the soil is attached as a mold surface, and a molding resin having better adhesion to the particles constituting the soil than the silicone resin is used as the mold surface of the silicone mold. Applying and curing, and
and d) removing the silicone resin from the molded resin while leaving the soil on the surface of the cured molded resin.   2. The method according to claim 1, further comprising a step of applying a surface treatment agent for improving adhesion between the silicone resin and the particles to the surface of the remains before the silicone resin is applied to the surfaces of the remains. A method for producing the described three-dimensional stripped specimen.

Images