JP2007137040A - Wooden plywood and method for manufacturing and using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To execute visual consideration (easy recognition of dangerous places) in a wooden living space in particular in a living space for the older without deteriorating the characteristic of the wooden living space and to provide a method for manufacturing and using a material suitable for the same. <P>SOLUTION: A wooden plywood whose grain density is different stepwise is used. To obtain a raw material of the wooden plywood, a treetop part of a raw wood or a thinned-out wood or used, and a cutting criterion suitable for obtaining the same is established. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

The present invention mainly relates to a wood-based plywood that is characterized by visibility among wood-based plywood suitable for interior materials, its manufacturing method (especially suitable for the use of thinned wood), and its usage (especially for elderly living spaces). Suitable for the configuration of the above).

It has long been known from experience that a living space made of wood gives a resident a mental and physical comfort that is difficult to obtain in a living space made of inorganic materials. Sciences such as the physiological sedation of terpenes contained in fragrances of wood, the cerebral stimulation by tactile sensation on the wood surface, the reduction of glare by moderate light scattering on the wood surface, the rest of nerves given by the moderate fluctuation of visual stimulation by the grain Supportive evidence is gradually accumulating. In addition to this, with the increase in the number of elderly people, there is a growing number of living space configurations such as barrier-free that are compatible with this. Therefore, it is indispensable to pay attention to danger points that are unavoidable in terms of construction, that is, stairs, corners, corners at the bottom of the shelf, and the like. However, there is no further improvement on this point, and there is no particular note that is suitable for the woody environment and the calm feeling given by the wood.

On the other hand, in terms of the raw material of wood, when cutting the raw wood, the scale (cutting length) is 2m, 3m and 4m as a standard, and further long items are collected by special order. Are not suitable for timber and are discarded in the mountains. In addition, so-called thinned wood that is cut for thinning according to the growth of the tree cannot be used as timber because of its small diameter, and most of it remains discarded in the mountains. These wastes are not only a waste of resources, but have become unfavorable for the forest environment as the accumulation increases.
Masuda: Journal of the Japan Wood Society vol. 38, p. 1075 (1987) Masuda: Kyoto University Faculty of Agriculture Forest Report no. 59, p. 273 (1987) Hirama: News from Forest Products Trial (Hokkaido) May 2003

In the present invention, in order to carry out visual considerations in the above wood-based living space, particularly a living space for elderly people, without impairing the characteristics of the wood-based material, a material suitable for it and a method for producing and using the same are developed. To do.

The present inventor has endeavored to disseminate a high-quality structure at a low cost for a wood-based living space, particularly a living space using Japanese cypress for many years (Japanese Patent Application No. 2004-238915, Japanese Patent Application No. 2005-280754). In order to solve the problem, the following invention was made.
(1) In wood-based plywood, the density of knots existing on the surface is controlled step by step, and a difference in visual stimulus is given between plywoods with different density steps or between different density steps within the same plywood. Wood-based plywood (hereinafter referred to as visibility plywood).
(2) A manufacturing method characterized in that, in the visibility plywood, a 65 cm length is used for cutting the raw wood.
(3) A manufacturing method characterized by using thinned wood, particularly preferably Japanese cypress thinned wood, as the raw wood described in (2).
(4) When using the visibility plywood, use the visibility plywood with a higher density of nodes than the surroundings, especially in places where attention is required to prevent danger such as steps, corners, and the bottom of the shelf. How to use the visibility plywood.
(5) In the use of the visibility plywood, the visibility plywood having a knot density as low as possible is used in a desirable living space in a quiet environment such as a living room.

According to the present invention, a visual danger avoidance means suitable for a wooden living space can be obtained, and further widespread use of high-quality living spaces can be expected. Further, by effectively utilizing unused resources, cost reduction and forest environment can be achieved. Is improved.

First Embodiment: The first embodiment relates to a wood-based plywood used for the purpose of the present invention, as described in (1). In other words, it is a wood-based plywood that uses the same quality wood with no discomfort to the surroundings and uses the fact that the knots attract attention, so that the knot density is controlled step by step, and the difference in ease of visual recognition is provided. The density may be uniform over the entire surface of the plywood, or it may be one in which only necessary portions are enhanced by utilizing the characteristics of the plywood. Specific milestone density for catching attention, depends milestone gray-magnitude, and certain hard but so also is affected by the surrounding environment, two approximately to 10 cm ² when the turning point of about 2cm diameter guide It is considered to be.

Second Embodiment: As described in (2) and (3), the second embodiment relates to the acquisition of raw materials in the method for manufacturing a visible plywood. In the visibility plywood of the present invention, it is necessary to control the knot density at a necessary portion of the surface, and it is a precondition that raw material wood having a desired knot density is supplied reliably. For this reason, it is effective to use raw wood with a high knot density, that is, the treetop portion of raw wood that has been discarded in the past, and for that purpose, when cutting the raw wood, a shorter scale than the conventional reference scale is used. It must be applied where necessary. According to the inventor's experience, 65 cm (actually used portion 60 cm) is the most convenient as the scale, and it is proposed to standardize this numerical value. Also, the effective use of thinned wood, especially cypress thinned wood, as a plywood has been advocated by the inventor for some time, but it is particularly suitable as a raw material for the present invention because it has various node densities. On the other hand, a 65 cm scale can be applied over the entire length.

Third Embodiment: The third embodiment relates to a method for using the visibility plywood as described in (4) and (5). Visibility plywood is intended to be applied to places that need attention, and is also useful as an accent in interior design, but the main target is dangerous places in living spaces, steps, corners, shelf bottom, etc. This is a place where an appropriate corresponding operation is required, and a visibility plywood with a high knot density or a visibility plywood with a partially increased knot density is applied to the location. At this time, it is necessary to pay attention to the contrast with the surrounding environment, and attention must be paid to being sufficiently conspicuous and not being too conspicuous to cause a sense of incongruity.

Conversely, according to the inventor's experience, residents are more likely to obtain peace of mind in a woody space with a low knot density that does not interfere with the appropriate fluctuations in the knot, so that the knot density is as much as possible for this purpose. Use low visibility plywood. Even if there is a place to call attention to the view in the living space composed of visibility plywood with low knot density, if visibility plywood with high knot density is used, it is essentially the same wood It is thought that there is less sense of incongruity than with different materials, and the degree to which the rest is disturbed is small.

The present invention provides a risk location display method suitable for a wood-based living space to improve the convenience of a wooden interior house, and provides an effective use means of a raw wood portion or thinned wood that has been regarded as waste material in the past. It contributes to reduction and improvement of the forest environment, and is expected to be widely used in relations.

Claims (5)

In wood-based plywood, the density of knots existing on the surface is controlled step by step to give a difference to visual stimuli between plywoods with different density steps or between different parts of density steps within the same plywood System plywood (hereinafter referred to as visibility plywood). In a visibility plywood, a manufacturing method characterized by using a 65 cm scale for the cutting of the raw wood. A thinning material, particularly preferably a hinoki thinning material, is used as the raw wood according to claim 2. Visibility plywood, which uses attentional plywood with higher knot density than the surroundings, especially in places where attention should be paid to prevent danger such as steps, corners, shelf bottom, etc. How to use sex plywood. A method for using a visibility plywood, comprising using a visibility plywood with a node density as low as possible in a desired living space in a quiet environment such as a living room.