JPH0387250A - Roofing board - Google Patents

Abstract

PURPOSE:To prevent sliding during work while securing safety and waterproofness by coating the surface of a wooden base material with a composition based on a thermosetting resin and a thermoplastic resin and incorporating a filler not dissolved in both resins. CONSTITUTION:A composition based on a thermosetting resin and a thermoplastic resin and containing an org. or inorg. filler not dissolved at least in the thermosetting resin or thermoplastic resin is applied to the surface of a wooden base material selected from plywood or particleboard or the thermosetting resin and the thermoplastic resin are preliminarily applied to the surface of said base material and a composition composed of the org. or inorg. filler not dissolved at least in the thermosetting resin or thermoplastic resin is scattered thereon. As the inorg. filler, calcium carbonate, clay, bentonite, talc, kaolin silica sand or sirasu are designated and, as the org. filler, wood flour, hulls, processed sugar, bamboo flour, bagasse, sunflower seed flour, walnut powder, palm powder or animal bone meal are designated.

Description

Detailed Description of the Invention [Industrial Application Field] The present invention provides an ffl [J base material] which has a non-slip property (hereinafter referred to as non-slip property) on the surface of plywood and particle board suitable as building structural members. This relates to wood field boards.

[Problems to be Solved by the Prior Art and the Invention] Generally, shingles, plywood, particle boards, and other sheathing boards are used as roof base materials. In ordinary residential buildings, these roof boards are constructed at an angle of 30 to 45 degrees, waterproofed with asphalt roofing or waterproof paper such as asphalt felt, and roof tiles are placed on top. Boat fishing. However, in today's shops and general residences, there has been an increasing trend toward Western-style architecture, and as a result, the slope of roofs has become larger, creating an increased risk of falls for carpenters, roof tile contractors, etc. is increasing, and safety is becoming more important. Furthermore, as prefabricated buildings are becoming more popular, there is a demand for roofing boards that are waterproof and do not use the above-mentioned asphalt roofing or asphalt felt, which is not only safe but also shortens the construction period. As described above, with conventional roof boards, workers such as carpenters may slip and fall on the boards installed, and because they are not waterproof, they require a lot of work as described above and are dangerous. Improvements were required.

The present inventors have found that even if these plywood and particle boards are used as field boards, safety and asphalt roofing can be ensured, and waterproofness is sufficiently ensured without using asphalt felt, and there is no possibility of slipping during work. The surface has been treated to eliminate any scratches.

[Means to solve problems]

As a result of intensive studies to ensure the safety and waterproofness of roofing boards, the inventors of the present invention have found that the surface of wood base materials such as plywood and particle board is filled with a specific resin and an organic or inorganic material. The agent is mixed and applied or sprayed to form unevenness on the wood base material, or the resin is applied in advance and an organic or inorganic filler is sprinkled on the resin. , which aims to ensure safety and waterproofness.

That is, on the surface of a wood-based base material selected from plywood and particle board, an organic or amorphous material containing at least a thermosetting resin or a thermoplastic resin as a main component and not soluble in the thermosetting resin or thermoplastic resin is applied. Apply a composition consisting of a filler, or apply the thermosetting resin and thermoplastic resin in advance, and remove at least an organic or inorganic filler that does not dissolve in the thermosetting resin or thermoplastic resin. The present invention relates to a field board characterized by being formed by spraying a composition.

[Specific Conditions for Carrying Out the Invention] The present invention will be explained in more detail.

The field board used in the present invention is used as a base for roof tiles.

Commercially available plywood and particle board are sufficient for use in the present invention. Plywood and particle board with a length of about 9 to 15 m+ are used. The plywood and particle board must be strong enough to withstand even when roof tiles are placed on top. usually,
Plywood has higher bending strength than particle board, for example, 15mm plywood and 15mm+ particle board
When compared, they have the same or about twice the strength, so plywood is used with a thickness of about 9 to 12 mm+, and particle board is used with a thickness of about 12 to 15 mm.

The thermosetting resin used in the present invention includes urea resin, Melac resin, phenol resin, epoxy resin, etc.
Generally, melamine resin or urea melamine cocondensation resin is often used due to cost and water resistance. Melagon resin is a mixture of formaldehyde (F) and melamine (M) with a molar ratio of F/M of 2.0 to 3.5, and urea melamine resin is a mixture of formaldehyde, urea, and melagone. Cocondensation may be used, or the urea resin and melamine resin may be simply mixed and used.

The mixing ratio is urea resin: melamine resin - 0 to 4:
About 1 to 6 is preferable.

Phenol resins, epoxy resins, etc. are not particularly specified, and generally commercially available ones may be used.

Epoxy resins can be used as regular curing resins by selecting amine-based curing agents.

Further, it is preferable that these resins be modified using a modifier such as polyvinyl alcohol, carboxylmethyl cellulose, or hydroxyethyl cellulose. By modifying the resin, a resin with appropriate viscosity and adhesiveness can be obtained, which improves the adhesion and compatibility with organic or inorganic fillers, which is preferable.

Since thermosetting resins have little flexibility due to their nature, they tend to crack during long-term use, so it is preferable to add 30 to 70% thermoplastic resin. Adding a thermoplastic resin is preferred because it prevents cracking and reduces costs.

The thermoplastic resin is one or more polymers or copolymers of styrene-butadiene latex, acrylic, vinyl acetate, polyolefin, vinyl chloride, vinylidene chloride, polyester, polyurethane, and alkyd. is used.

These materials are manufactured by generally known polymerization methods.

Examples of inorganic fillers include calcium carbonate, tare, bentonite, talc, kaolin, silica sand, and shirasu, but iron oxide pigments can also be used as colorants for paints.

The amount added to thermosetting resins and thermoplastic resins is
Although it cannot be said unconditionally depending on the type of filler, calcium carbonate is preferably used because of its good non-slip properties and low cost.It is usually added in an amount of 10 to 300%, preferably 20 to 200%. It is. If it is less than 10%, the desired safety non-slip effect will not be fully exhibited. If it exceeds 300%, there are problems such as insufficient compatibility with the resin and the inability to apply uniformly. Furthermore, when atomizing with a spray or the like, it is not preferable because it causes clogging.

Examples of organic fillers include wood flour, rice hulls, processed sugar, bamboo flour, bagasse, sunflower seed flour, corn flour, coconut flour, and animal bone meal.

Although the amount added to thermosetting resins and thermoplastic resins cannot be determined unconditionally depending on the type of filler, as with inorganic fillers, it is usually added in an amount of 5 to 35%, preferably 10 to 25%. If it is less than 5%, the desired safety and anti-slip effect will not be sufficiently exhibited.

If it exceeds 35%, there are problems such as insufficient compatibility with the resin and the inability to apply uniformly. Furthermore, spraying with a spray or the like is not preferable because it causes clogging, and it is also possible to use an arbitrary mixture of inorganic fillers and organic fillers within the above range.

The particle size of inorganic and organic fillers varies greatly depending on the method of application. That is, when applying with a sizing machine (spreader), or when applying a hardening resin and spreading it using a spreader, the particle size may be relatively large, and usually 10 to 600 μm. Available for use. However, when spraying, the nozzle may become clogged, which greatly affects workability, so
It is preferable to carry out at m.

Therefore, it cannot be clearly limited depending on the type of non-Japanese filler and 81-carbon filler used, but it is usually 0.5 to 600.
It is used in micrometers, preferably 3 to 500 micrometers. For example, when using wood flour as an organic filler and applying it with a sizing machine (spreader), the thickness is preferably 150 to 400 μm.

Thermosetting resin or thermoplastic resin is organic or free of organic substances.
In addition to general fillers, dispersants, antifoaming agents, pigments, thickeners, etc. can also be added in appropriate amounts to improve workability, application amount, and even product value. is preferred.

Generally known dispersants, antifoaming agents, pigments, thickeners, etc. can be used.

The coating amount may be such that the organic or inorganic filler applied to the surface of the plywood or particle board is sufficiently impregnated with the resin and is sufficiently fixed onto the surface of the board. Plywood and particle board have different properties on the board surface, so the amount of coating will also differ.

In other words, the board surface of plywood has a relatively large absorption of resin, the unevenness is larger than that of particle board, and the coating amount is 120%.
~250g/m'', but particle board has a smooth board surface that absorbs resin and has small irregularities, so it is around 90~250g/m''.
Approximately 200 g/m'' is preferable.

If the coating amount is too small, the desired non-slip property may not be achieved, and if it is too large, the next drying process may take a long time, and the coated surface may be prone to cracking, resulting in waterproofing. It is not very desirable because it causes disadvantages such as loss of sexual effects.

The present invention can also be produced by a method in which an organic or inorganic filler that does not dissolve in the thermosetting resin or thermoplastic resin is sprayed. That is, by pre-coating the thermosetting resin or thermoplastic resin, at least on the thermosetting resin or thermoplastic resin? It is manufactured by spraying a composition consisting of an organic or inorganic filler that does not dissolve in water.

The amount of the organic or inorganic filler to be sprayed may be approximately the same as when the organic or inorganic filler is mixed into the resin and applied.

In this way, it is applied to plywood and particle board,
Alternatively, those coated with a resin and sprinkled with an organic or inorganic filler are dried using a drying device.

Drying is carried out using a conventional box-type dryer, tunnel-type dryer, band-type dryer, high-frequency dryer, or the like.

Drying temperature is usually 60 to 15 when using thermosetting resin.
At 0°C, and when using thermoplastic resin, 50 to 80
Drying is carried out at °C.

The drying time varies depending on the drying temperature, the length of the drying equipment, the type of resin, the amount of coating, etc., so it cannot be determined with certainty, but drying for a long time at high temperatures will cause the painted surface to overdry, causing cracks in the painted surface. The tentacles may become sticky or brittle, so choose an appropriate amount of time to avoid the tentacles becoming sticky.

[Examples and Comparative Examples] The present invention will be specifically described below using Examples and Comparative Examples. In addition, all parts below indicate parts by weight unless otherwise specified.

Implementation/Example 1 A 2N polyethylene container is equipped with a stirrer, and 430 parts of Almatex E-269 (manufactured by Mitsui Toatsu Chemical Co., Ltd.) is put therein, and while stirring, Poise 530 (manufactured by Kao Co., Ltd.) is added as a dispersant.
6 parts, 1.5 parts of Nopco 8034L (manufactured by San Nopco ■) as an antifoaming agent, 275 parts of general calcium bicarbonate (manufactured by Maruo Calcium), 35 parts of iron oxide (manufactured by Nippon Bengara ■), wood powder (18 (1~ 355 pm), 2 parts of 14% ammonia water, and 65.5 parts of water as adjustment water were successively added and stirred for about 15 minutes to obtain Formulation 1. Stirring was continued to prepare the thickener Aron B- 300 (manufactured by Toagosei ■) was added little by little to measure the viscosity, and the viscosity of Formulation 1 was successively added until the viscosity reached 40 poise.9 parts of Aron B-300 were needed to reach 40 poise. This was designated as Formulation 2. Next, 12+am thick plywood and 15m thick plywood
Formulation 2 was applied to particle board No. m using a sizing machine (spreader). The coating weight was 160 g/m for plywood and 120 g/m for particle board.

Next, it was dried for 15 minutes in a dryer at 60°C to obtain a floor board 1 (plywood) and a floor board 2 (particle board).

These results are shown in Table 1.

Example 2 A field board 3 was obtained in the same manner as in Example 1 by adding crushed sunflower seeds (0.5 to 200 μm) instead of wood flour. .

These results are shown in Table 1.

Example 3 The same method as in Example 1, except that Structbond 5R-1051 (Styrene-Butadiene Latenx manufactured by Mitsui Toatsu Chemical Co., Ltd.) was used instead of Almatex E-269. So, I got 4 field boards.

These results are shown in Table 1.

Example 4 A polyethylene container No. 21 was equipped with a stirrer, and 600 parts of Niroid 350 (manufactured by Mitsui Toatsu Chemical Co., Ltd., urea-melamine co-condensation resin) was added thereto while stirring. butadiene latex) 400 parts, wheat flour (Nissin Akaaka) 100 parts, processed sugar (Matsugen Seimugi) 200 parts, wood flour (180-355 μm)
200 parts, 300 parts of adjusted water, and finally 5 parts of powdered ammonium chloride (N114CI) as a hardening agent, approx.
Stir for a minute. The viscosity was 120 poise/25'C.

Next, 170 g/m'' of the adhesive was applied to a plywood board with a thickness of 12III11 using a glue spreader, and the mixture was dried in a dryer at 100°C for 10 minutes to obtain a roofing board 5.

These results are shown in Table 1.

Example 5 A 2N polyethylene container was equipped with a stirrer, and 670 parts of Almatex E-269 (Mitsui Toatsu Chemical ■!pA) was added thereto, while stirring, 9 parts of Boyz 530 (manufactured by Kao ■) as a dispersant and an antifoaming agent were added. 2 parts of Nopco 8034L (manufactured by San Nobuko ■), 200 parts of iron oxide (manufactured by Nippon Bengara ■),
3 parts of 14% ammonia water, 103 parts of water as adjustment water, and Aron B-300 (manufactured by Toagosei ■) as a thickener were added little by little until the viscosity reached 30 poise/25°C. Aron B- required to reach this viscosity
300 was 13 parts.

This formulation was applied to 12mm thick plywood and 15mm+ particleboard using a gluing machine. Plywood is 170g/m
The particle board had a coating weight of 130 g/m.

Wood powder (
A particle size of 300 to 400 μm) was uniformly sprinkled at 13 g/m'' each.Next, it was dried for 15 minutes in a dryer at 60°C to obtain a floor board 6 (plywood) and a floor board 7 (particle board).

These results are shown in Table 1.

Comparative Example 1 Comparative Example 1 was an untreated plywood board with a thickness of 12 mm.

These results are shown in Table 1.

Comparative Example 2 The same operation as in Example 1 was carried out using the same method as in Example 1, except that -board calcium carbonate, iron oxide, and wood flour were removed.

Namely, Almatex E-269430 part, Boyz 53
06 parts, 1.5 parts of Nobuco 8034L, 2 parts of 14% aqueous ammonia, and 65.5 parts of water were added sequentially, stirred for about 15 minutes, and continued to stir until the viscosity of Aron B-300 reached 40 poise. Added up to. 20 parts of Aron B-300 were required to reach 40 poise.

Thereafter, in the same manner as in Example 1, painted plywood and particle board panels 1 and 2 were obtained.

These results are shown in Table 1.

As mentioned above, roof boards 1 to 7 obtained in Examples 1 to 5 and comparative example 1
Table 1 shows the results of measuring the static friction resistance and water permeability of the untreated field boards and the field boards without organic or inorganic fillers obtained in Comparative Example 2 (coated products 1 to 2). As a result, although the flooring boards 1 to 7 have the same water permeability as the coated products, there is a large difference in static friction resistance, and non-sliding properties are obtained.

In addition, the untreated field of Comparative Example 1 The measured values are very poor even in terms of geothermal conditions.

〔Effect of the invention〕

As explained in detail above, the present invention is a method of applying a mixture of a specific resin and an organic or inorganic filler to the surface of a wood base material such as plywood or particle board currently used as a roofing board, or A specific resin is coated and an organic or inorganic filler is sprinkled on the resin to ensure safety and waterproofness.

As described above, the present invention involves coating plywood, particle board, etc. with a mixture of a specific resin and an organic or non-aeration filler, or by coating a specific resin and then spraying an organic or non-aerosol filler. This is a simple method that makes plywood and particle board non-slip and waterproof.

The present invention is expected to have a great influence on the construction industry in the future, as it will provide safety, waterproofness, and shortened construction period as Western architecture and prefabricated construction become more and more popular in the future.

Claims (1)

[Scope of Claims] 1) The surface of a wood base material selected from plywood and particle board is coated with a thermosetting resin and a thermoplastic resin, or a mixture thereof, as a main component, and at least the thermosetting resin or A roof board characterized by being coated with a composition comprising an organic or inorganic filler that does not dissolve in a thermoplastic resin. 2) A thermosetting resin and a thermoplastic resin are applied to the surface of a wood base material selected from plywood and particle board, and at least an organic or inorganic filler that does not dissolve in the thermosetting resin or thermoplastic resin is used. A field board characterized by being formed by spraying a composition consisting of. 3) The method according to claim 1 or 2, wherein the thermosetting resin comprises a urea resin, a melamine resin, a phenol resin, an epoxy resin, or a cocondensate resin of one or more of these resins. 4) The thermoplastic resin is one or more polymers of styrene-butadiene latex, acrylic vinyl acetate, polyolefin, vinyl chloride, vinylidene chloride, polyester, polyurethane, and alkyd, or a copolymer. The method according to claim 1 or 2, which is a polymer.