JPH0691614A - Wood meal bonding material - Google Patents

Abstract

PURPOSE:To manufacture a wood meal bonding material demonstrating harmful insect repellency and antifungal properties by making synthetic resin adhered to wood meal of harmful insect repellency or containing an antifungal component, filling the material in a cavity of a mold and heat pressurizing the same. CONSTITUTION:As wood meal, it is preferred that powder of one kind out of hiba arborvitae, sawara cypress, hinoki (white cedar) and Yaku-sugi (Yaku cedar) or mixed powder of two kinds or more is used. Or else, an adsorption material to which volatile oil containing hinokitiol is adsorbed or a material composed of woody crushed powder or the like with which volatile oil containing hinokitiol is blended can be used. As for synthetic resin, thermosetting resin or thermoplastic resin can be used properly. As an example, EVA resin is made to adhere to the wood meal of hiba arborvitae, and the material is heat pressurized to manufacture a sheet-shaped woody meal bonding material. The material is vacuum molded to form an egg packaging container 1 in which eggs are stored and put into a refrigerator. The container thus manufactured is provided with antifungal for a rubber sealing material used in the refrigerator like better than a conventional polyethylene container.

Description

Detailed Description of the Invention

[0001]

[Field of Industrial Application] The present invention uses wood powder containing medicinal components such as hinokitiol having repellent properties against mites and cockroaches, antibacterial properties against Trichophyton, and antifungal properties. The present invention relates to a wood powder binder that exhibits good properties.

[0002]

[Prior Art] In recent years, the heat insulation of apartments and condominiums,
The number of houses that are highly airtight and contain a suitable amount of moisture in concrete is increasing, creating a favorable environment for the outbreak of mites and increasing the damage caused by mites. In order to eliminate this damage, various types of aerosol type, in which a spray can is injected into the tatami mat with a needle, or sheets in which an organic phosphorus chemical is soaked in paper, are developed and marketed.

However, the above-mentioned mite sheet is not subject to the regulations of the Pharmaceutical Affairs Law regarding safety checks, indications of active ingredients and precautions for use, and the consumer has no knowledge whatsoever. Accidents occur in various places that make people feel uncomfortable and have a sore throat by using products without giving them.

[0004]

The present inventors have found that hinoki thiol, which repels mites, etc., is contained in Hiba, sawara, cypress, Yakusugi, etc., and when sawing these woods, a large amount of sawdust is produced. It was found that this sawdust contains a medicinal component that repels the above mites and the like, is harmless to the human body, and gradually evaporates the medicinal component contained for a long period of time.

The present invention was made on the basis of the above findings, is harmless to the human body and is safe, and can be used in any form including sheet form as a pest repellent such as mites, antibacterial agents, antifungal agents and the like. The purpose is to obtain a material that can be used as.

[0006]

[Means for Solving the Problems] The problem is that a synthetic resin is adhered to a wood powder containing a component having pest repellent or antibacterial properties, the synthetic resin is filled in a cavity of a mold, heated and pressed, and This is solved by binding wood powder to form a wood powder binder. The above-mentioned wood powder is typically a powder of Hiba, sawara, cypress or Yakusugi.

[0007]

[Function] Hiba, sawara, cypress or Yakusugi powder contains hinokitiol having pest repellent or antibacterial properties, and this hinokitiol gradually evaporates from the wood powder binder to the outside for a long time. It exerts pest repellent and antibacterial properties, and volatilizes cypress-like aroma.

The wood powder binder of the present invention will be described in detail below. The wood powder binder of the present invention is obtained by adhering a synthetic resin to wood powder containing a component having pest repellent property or antibacterial property, and filling the resin in a cavity of a mold and heating and pressing the wood powder. It is made by binding. The structure of this wood powder binder is porous cork-like, and the medicinal component is gradually vaporized to the outside through these pores. Further, the shape of this wood powder binder can be changed into a sheet shape, a plate shape, by changing the shape of the cavity of the mold.
It can be formed into various shapes such as a tubular shape and a block shape.

The amount of the synthetic resin attached to the wood powder is 20 to 100 parts by weight of the wood powder (absolutely dry state).
It is set to 200 parts by weight. When attaching the synthetic resin to the wood powder, it is preferable that the wood powder contains less water, but it is not particularly necessary to dry it. From this point of view, it is preferable to use an emulsion type synthetic resin. The method of attaching the synthetic resin to the wood powder is performed by using a conventional mixing device equipped with a stirring blade. As the mold, metal, thermosetting synthetic resin, wood, etc. are used, but metal is preferable from the viewpoint of heating efficiency. The heating and pressing conditions vary depending on the shape of the molded product and the type of synthetic resin used, but are usually at a temperature of 50 to 150 ° C. and a time of 2 minutes to 2
The pressure is set to 0 to 50 kg / cm ² for 0 minutes.

As the wood powder, cutting powders (cuts), crushed powders, crushed pieces and the like of Hiba, sawara, cypress, Yakusugi, etc. are used. The essential oil contained is cotton fiber (catch oil), gellalite, activated carbon,
10 to 70% by weight with respect to what is adsorbed on an adsorbent such as silica gel, or the above crushed powder or crushed pieces
It is also possible to use the one blended in the proportion of, and it is preferable to use this one because the volatilization time of the medicinal component can be extended.

The above hinokitiol has a chemical formula of C ₁₀ H ₁₂ O.
Represented by _2, it is a colorless to pale yellow crystal that volatilizes cypress-like aroma and has strong antibacterial properties, and is known to be used in gingival massage creams that prevent the development of periodontal disease pathogens. In addition, it is a component approved as a food additive, and is a drug that is safe without causing chemical damage to humans and animals like synthetic drugs and pesticides and pesticides, and that does not attract mites and fungi.

Examples of synthetic resins include amino resins such as phenol resins and melamine resins, epoxy resins, urethane resins, unsaturated polyester resins, urea resins, thermosetting resins such as silicone resins, vinyl chloride resins, vinyl acetate resins, EVA. Thermosetting resins such as resins and acrylic resins are appropriately used depending on the application.

Further, when the synthetic resin is attached to the wood powder, glass fibers, synthetic fibers or the like are mixed for the purpose of improving flexibility, heat resistance, durability and cost reduction. It is also possible to obtain those that have been worn, and in particular, those that are mixed into a sheet form are easy to process and handle.
Furthermore, in the wood powder binder of the present invention, if necessary, the outer surface can be provided with a pattern or coloring by any printing such as pad printing, screen printing, hot stamping and the like.

As described above, in the wood powder binder of the present invention, the medicinal components such as hinokitiol contained in the wood powder gradually volatilize to the outside, and mites, cockroaches, mosquitoes,
Repels harmful insects such as termites, exhibits antifungal properties, antibacterial properties, etc. and volatilizes a unique cypress-like aroma, and does not harm human bodies, livestock, etc. It can be used in all shapes including shapes. Therefore, the wood powder binder of the present invention can be used for the following wide applications. Interior materials such as tatami mats, mats, carpets, and interior materials such as curtains and wallpapers, furniture, chairs, beds, various storage cabinets, and other bedding materials such as bedding and pillows. , Shoes insoles, interior materials for food factories, hospital room interior materials, lining materials for food storage such as kitchens, electronic devices such as computers, word processors, telephones and keyboards for these electronic devices, and mites can be parasitic. It is used as a repellent material, a packaging material for fresh foods, a packaging material for seedlings, bulbs, etc. Furthermore, by simply placing this wood powder binding material indoors, you can easily enjoy the so-called forest bath.

[0015]

EXAMPLES An example of forming an egg packaging container using the wood powder binder of the present invention will be described below. First, prepare cutting powder of Hiba, attach EVA resin to it, fill it in a mold, heat and pressurize it under the conditions of 120 ° C., 30 kg / cm ² , and 10 minutes, and form a sheet with a thickness of 3 mm. A wood powder binder was obtained.
Then, after taking this out from the cavity, the sheet-like wood powder binder is attached to a vacuum forming die and vacuum formed to obtain an egg packaging container 1 as shown in FIGS. 1 and 2. It was

Egg packaging container 1 obtained as described above
Is folded in half at the folding position 2 which is long in the longitudinal direction,
The upper container 4 covers the lower container 3, and the lower container 3 has a convex portion 3A having a narrow width in the longitudinal direction and a concave portion 3B defined by the convex portion 3A alternately in the longitudinal direction and the width direction. In the upper container 4, concave portions 4A having a narrow width in the longitudinal direction and convex portions 4B defined by the concave portions 4A are arranged alternately in the longitudinal direction and the width direction, and the concave portions 3B and the convex portions 4B are arranged.
It is designed to accommodate eggs one by one in the space between and.

Next, it may be the case that mold spores attached to the shell of the egg may cause mold to easily develop in the rubber sealing material provided inside the door of the refrigerator. Therefore, after accommodating eggs under substantially similar conditions in the egg packaging container 1 of the example and the conventional polyethylene egg packaging container, these containers were placed in separate pre-sterilized refrigerators. A comparative test of antifungal performance was performed. as a result,
Apparently, the refrigerator in which the container for egg packaging of the example is arranged,
The antifungal performance was confirmed.

[0018]

As described above, in the wood powder binder of the present invention, the synthetic resin is adhered to the wood powder containing the component having pest repellent property or antibacterial property, and the resin is placed in the cavity of the mold. It is filled, heated and pressurized, and is made by binding the wood powder, so it is harmless to the human body and safe, and it can be used as a sheet of pest repellent such as mites, antibacterial agents, antifungal agents, etc. There is an advantage that it can be used as any shape. In addition, it is inexpensive because it uses sawdust generated when lumber such as hiba, sawara, cypress, and yaksugi is used. Furthermore, it volatilizes cypress-like aroma over a long period of time.

[Brief description of drawings]

FIG. 1 is a longitudinal side view showing an embodiment of a wood powder binder of the present invention.

FIG. 2 is a side view of the wood powder binder in FIG. 1 in the width direction.

Claims (2)

[Claims] 1. A synthetic resin is attached to wood powder containing a component having pest repellent or antibacterial properties, and the resin is filled in the cavity of a mold and heated and pressed to bind the wood powder. Wood powder binder. 2. The wood powder binder according to claim 1, wherein the wood powder is one kind of hiba, sawara, cypress or yaksu, or a mixed powder of two or more kinds.