JP2019034420A - Manufacturing method of processed wood, and processed wood obtained by the same - Google Patents

Abstract

The present invention provides a method for producing processed wood capable of increasing the scent and extending the duration of the scent, and the processed wood obtained thereby.
This method of manufacturing processed wood compresses raw wood made of aromatic wood or fragrant wood. First, the dried raw wood is impregnated with a pretreatment solution containing at least one member selected from the group consisting of straw, shellac, and lignin (step S101; pretreatment step), and then the raw wood is heated. Compress (step S102; heating compression process). By performing preprocessing, the compressed state can be maintained, and the effect of compression can be maintained.
[Selection] Figure 1

Description

  The present invention relates to a method for producing processed wood for compressing wood and processed wood obtained thereby.

  Wood having a fragrance such as cedar or cypress is often used for applications utilizing the action of the scent component, such as sedation or bactericidal action. Therefore, if this scent can be further increased or the duration of the scent can be increased, a higher effect can be obtained and the use can be expanded. In addition, there is a fragrant wood as a wood for enjoying the fragrance, but the fragrant wood is rare and expensive, so it is difficult to use it, and it is preferable if the fragrance can be increased or the duration of the fragrance can be increased.

JP-A-11-255631

  The present invention has been made on the basis of such problems, and provides a method for producing a processed wood capable of enhancing the scent and extending the duration of the scent and the processed wood obtained thereby. Objective.

  Patent Document 1 describes that aromaticity is improved by applying an electromagnetic field to a scent. However, the present invention improves the aromaticity by compressing, and the specific means are completely different.

  The method for producing processed wood according to the present invention is a method for processing raw wood made of fragrant wood or fragrant wood, and the dried raw wood is made of at least one of the group consisting of persimmon astringent, shellac and lignin. It includes a pretreatment step for impregnating a pretreatment solution containing one kind and a heat compression step for heating and compressing the raw material wood after this pretreatment step.

  The processed wood of the present invention is obtained by the processed wood manufacturing method of the present invention.

  According to the present invention, since the raw material wood is heated and compressed, the components contained in the raw material wood are condensed, the scent is increased, and the duration of the scent can be lengthened. The action and bactericidal action can be enhanced. In addition, the strength can be improved, and the eyes can be clogged to enhance the sense of quality. Furthermore, in the case of a fragrant wood, a high scent can be obtained without burning, and the duration of the scent can be increased, so that it is economical and can be applied to various uses.

  In addition, since the pretreatment solution containing at least one of the group consisting of persimmon astringent, shellac and lignin is impregnated before heat compression, compression is performed by the adhesive action of persimmon astringent, shellac or lignin. It is possible to maintain the state, and the strength can be improved. In addition, if the persimmon astringent is used, formaldehyde can be adsorbed, so that the processed wood can improve the health damage caused by formaldehyde.

  Furthermore, if a beeswax treatment process in which beeswax is applied or an oil treatment process in which oil is impregnated or oil is applied is included, the scent can be maintained for a longer period of time.

It is a flowchart showing the process of the manufacturing method of the processed wood which concerns on one embodiment of this invention. It is a figure showing 1 process of the manufacturing method of the processed wood shown in FIG.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 shows a flow of a method for manufacturing a processed wood according to an embodiment of the present invention, and FIG. 2 shows one process thereof. The manufacturing method of the processed wood which concerns on this Embodiment compresses the raw material wood which consists of a tree which has a fragrance, or an incense tree. As raw material wood, if it is a conifer, for example, cedar, cypress or hiba will be mentioned. These include sedative and bactericidal effects. In the case of broad-leaved trees, camphor trees, camellias, or cherry trees can be mentioned. The camphor tree has an insect repellent effect and is called a “medicine tree” because it is used as a fragrance, insecticide, preservative and the like. Cherry blossoms are burned as chips, and the scent is used for smoking to preserve them. Examples of incense trees include mandala / sunk water fragrance trees and sandalwood. Mandala has a faint aroma, probably because it contains temper alcohol.

  First, the dried raw wood is impregnated with a pretreatment solution containing at least one member selected from the group consisting of persimmon astringent, shellac, and lignin (step S101; pretreatment step). The compressed wood compressed by the heating and compressing step described later expands when it absorbs moisture, and the effect of compression is reduced. However, at least one member selected from the group consisting of raw amber, shellac, and lignin. By impregnating the pretreatment solution containing, the compressed state can be maintained even when water is applied by the adhesive action of persimmon, shrack, or lignin, and the strength can be improved. Moreover, since the formaldehyde can be adsorbed by using amber astringent, the health damage caused by formaldehyde can be improved.

  In addition, persimmon astringent is the liquid which fermented and filtered the juice squeezed from the young fruit of a persimmon, for example. Shellac is a resinous substance obtained by purifying a larval body cover secreted by Laccifer lacaci and several closely related scale insects, and is also called shellac. For example, the shellac can be dissolved in alcohol to form a solution. Lignin is a polymer compound present in a plant in combination with cellulose or the like, and is used as an aqueous solution, for example.

  Any method may be used for impregnation of the raw material wood. For example, the raw material wood may be immersed in a pretreatment solution or may be applied. When applying, it is preferable to apply from the side of the mouth and soak into the conduit. Similarly, in the case of pickling, it is preferable that the side of the culvert is sucked into the persimmon astringent, and for example, it is preferable to carry out both culverts for about 6 hours.

  After the pretreatment process, for example, the raw wood is heated and compressed (step S102; heating compression process). It is because the component contained in raw material wood is condensed by compressing and it can raise a fragrance and can lengthen the duration of a fragrance. In the heat compression step, the raw material wood may be heated and then compressed, or may be compressed while being heated. For example, the raw material wood may be dielectrically heated by a high frequency such as a microwave and then compressed by a cold press or the like at a predetermined temperature or higher, or the raw material wood may be hot pressed at a predetermined temperature or higher. Good. Although heating temperature changes with kinds of raw material wood, it is preferable to set it as 80 degreeC or more within the range of the temperature which does not carbonize, for example, it is preferable to set it as 80 to 165 degreeC. This is because a higher effect can be obtained.

  Specifically, for example, it is preferable that the raw material wood is induction-heated to 80 ° C. or higher and 90 ° C. or lower and then compressed while being heated by a hot press or the like at a temperature of 16 ° C. or higher and 170 ° C. or lower. The temperature at the time of compression is preferably such that the temperature at the time of compression is within the range of 160 ° C. or more and 170 ° C. or less, and it is increased stepwise until compression to the target size. You may make it compress while heating. After compressing to the target size, it is preferable to stop the heating of the apparatus and continue the pressure compression while lowering the temperature to the normal temperature by natural heat dissipation.

  When compressing, for example, it is preferable to apply pressure not only in the vertical direction but also in the horizontal direction. For example, as shown in FIG. 2, an upper recess 11A is provided on the inner side of the upper press member 11, and a lower recess 12A is provided on the inner side of the lower brace member 12 so as to face the upper recess 11A. It is preferable to press the upper press member 11 and the lower press member 12 close to each other with M interposed therebetween. In this way, pressure can be applied not only in the vertical direction but also in the lateral direction by the side of the lower recess 12A or the side of the upper recess 11A, so that the pressure can be applied uniformly with a simple device. Because you can. At this time, the inner surface of the upper recess 11A of the upper press member 11 is positioned outside the outer surface of the lower recess 12A of the lower press member 12 so as to cover at least a part of the outer surface of the lower recess 12A. It is more preferable.

  After the heat compression process, for example, if necessary, the compressed wood compressed by the heat compression process is impregnated with oil or coated with oil (step S103; oil treatment process). This is because the volatilization of the scent is delayed, the compressed wood after compression is prevented from absorbing moisture, and the compressed state can be maintained for a longer period. As the oil to be impregnated, for example, non-drying oil is preferable. This is because the oil does not harden, so that the scent can be drawn out and it is difficult to volatilize, so that the duration of the scent can be increased. Non-drying oil refers to, for example, a vegetable oil having an iodine value of 100 or less, and specifically includes camellia oil, olive oil, grape cider or castor oil with a high content of oleic acid, linoleic acid and the like. .

  Finally, for example, it is preferable to finish by applying beeswax to compressed wood (step S104; beeswax treatment step). It is because it is coated with beeswax and the scent is maintained.

  Thereby, the processed wood which concerns on this Embodiment is obtained. Since this processed wood has improved fragrance of the raw material wood, it can be used for various applications utilizing its action. Examples of those using the bactericidal action include cutting boards of hiba and cypress, and examples of things to be stored include bento boxes, bent wrinkle containers, wooden utensils, or sake barrels. As a thing using a sedative effect, a Buddhist image sculpture and a figurine of camphor tree are mentioned, for example. As a thing using a fragrance, a bathtub, a fragrance | flavor, or a mandala incense stick (incense tract) is mentioned, for example. Examples of hygiene tools include a comb for relaxation effect or a wooden brush.

  Thus, according to the present embodiment, since the raw material wood is heated and compressed, the components contained in the raw material wood are condensed, the fragrance is increased, and the duration of the fragrance can be increased, The sedative action and bactericidal action of the raw material wood can be enhanced. In addition, the strength can be improved, and the eyes can be clogged to enhance the sense of quality. Furthermore, in the case of a fragrant wood, a high scent can be obtained without burning, and the duration of the scent can be increased, so that it is economical and can be applied to various uses.

  In addition, since the pretreatment solution containing at least one of the group consisting of persimmon astringent, shellac and lignin is impregnated before heat compression, compression is performed by the adhesive action of persimmon astringent, shellac or lignin. It is possible to maintain the state, and the strength can be improved. In addition, if the persimmon astringent is used, formaldehyde can be adsorbed, so that the processed wood can improve the health damage caused by formaldehyde.

  Furthermore, if a beeswax treatment process in which beeswax is applied or an oil treatment process in which oil is impregnated or oil is applied is included, the scent can be maintained for a longer period of time.

Example 1
As raw material wood, Hiba, Japanese cedar and cherry wood pieces were prepared. The size of each piece of wood was 20 cm long × 10.5 cm wide × 10.5 cm thick. Next, each raw material wood was soaked in persimmon astringent (step S101; pretreatment step). Subsequently, each raw material wood was heated in a microwave for 5 minutes to bring the temperature of the raw material wood to 80 ° C. or higher and 90 ° C. or lower, and then compressed with a heated 10-ton pot press machine. The thickness was 4 cm (step S102; heating compression process). In the compression, the temperature at the start of compression is set to 80 ° C. or more and 90 ° C. or less, and compression is performed while increasing the temperature stepwise. It was made to become below ° C. After compressing the raw wood to the desired thickness of 4 cm, heating of the hot press machine was stopped, and compression was continued with the hot press machine until the temperature reached room temperature by natural heat dissipation. Thereby, each processed wood was obtained for each raw material wood. After that, when each processed wood obtained was allowed to stand at room temperature and normal pressure for 1 week, the thickness of each processed wood was 4 cm unchanged.

(Example 2)
In the pretreatment step, each processed wood was obtained in the same manner as in Example 1 except that each raw wood was dipped in a solution in which shellac was dissolved in ethanol instead of straw. When each processed wood obtained was allowed to stand at room temperature and normal pressure for 1 week, the thickness of each processed wood remained unchanged at 4 cm.

(Comparative Example 1)
The same raw material wood as in Example 1 was prepared, and without performing the pretreatment step, the heat compression step (Step S102) was performed in the same manner as in Example 1, and the thickness of each raw material wood was set to 4 cm. After that, when each processed wood obtained was allowed to stand at room temperature and normal pressure for 1 week, the thickness of the central part did not change, but both the mouth ends swelled to 4.5 cm.

(Comparative Example 2)
The same raw material wood as in Example 1 was prepared, and a compression cold press was performed without performing the pretreatment step and without performing microwave heating. At that time, compression was attempted until the thickness of each raw material wood reached 4 cm, but compression was possible only to 6 cm. After that, when each processed wood obtained was allowed to stand at room temperature and normal pressure for 1 week, the thickness of each processed wood returned to 7 cm.

(Evaluation of Examples 1 and 2 and Comparative Examples 1 and 2)
When the processed woods of Examples 1 and 2 and Comparative Examples 1 and 2 were put on the nose and smelled, the processed woods of Examples 1 and 2 and Comparative Example 1 were changed to the processed woods of Comparative Example 2. I was able to feel a stronger scent. In addition, each processed wood of Examples 1 and 2 and Comparative Examples 1 and 2 was placed on a table, and it was examined whether or not the scent could be confirmed from a position away from the table. As a result, for each processed wood of Examples 1, 2 and Comparative Example 1, the scent could be confirmed, whereas for each processed wood of Comparative Example 2, the scent could not be felt. . In addition, when the fragrance was confirmed about the raw material wood before processing, the fragrance could not be confirmed unless attached to the nose and smelled. Furthermore, each processed wood of Examples 1 and 2 was able to retain a fragrance for a longer time than each processed wood of Comparative Example 1. In the pretreatment step, the same results as in Examples 1 and 2 were obtained even when an aqueous solution containing lignin was used instead of strawberries and shellac.

  That is, if it is heat-compressed, the components contained in the raw material wood are condensed, the fragrance can be enhanced, and the pretreatment solution containing at least one of the group consisting of persimmon astringent, shellac and lignin is impregnated. It was found that if the pretreatment is performed, the compressed state can be maintained, and the higher effect can be obtained while maintaining the compression effect.

  Although the present invention has been described with reference to the embodiments and examples, the present invention is not limited to the above embodiments and examples, and various modifications can be made. For example, in the above-described embodiment, the manufacturing process has been specifically described. However, all the processes may not be included, and other processes may be included.

  DESCRIPTION OF SYMBOLS 11 ... Upper press member, 11A ... Upper recessed part, 12 ... Lower press member, 11A ... Lower recessed part, M ... Raw material wood

Claims (4)

A method for producing processed wood that compresses raw wood made of aromatic wood or fragrant wood,
A pretreatment step of impregnating the dried raw material wood with a pretreatment solution containing at least one member selected from the group consisting of straw, shellac, and lignin;
A heating and compressing step of heating and compressing the raw material wood after the pretreatment step.   The method for producing processed wood according to claim 1, further comprising a beeswax treatment step of applying beeswax after the heat compression step.   The method for producing a processed wood according to claim 1 or 2, further comprising an oil treatment step of impregnating or applying oil after the heat compression step.   A processed wood obtained by the method for producing a processed wood according to any one of claims 1 to 3.

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