JPH0691674A - Production of siding board by vacuum foam molding - Google Patents

Abstract

PURPOSE:To inexpensively and efficiently produce a siding board of high quality enhanced in fire resistance, heat insulating effect and mechanical strength within a short time with high productivity. CONSTITUTION:Each of surface plate 1 and a back plate 3 is constituted of a colored zinc iron plate, a steel plate, tinplate sheet or gulvanized iron plate coated with a vinyl chloride resin and an aluminum or steel plate subjected to surface anticorrosion processing or coated with a synthetic resin. Only a synthetric resin foamable material 2 or a mixed material of the synthetic resin foamable material 2 and an inorg. material is supplied to the back of the surface plate processed into an appropriate predetermined shape and the back plate 3 is fixed to the synthetic resin foamable material or the mixed material. Then, the surface plate 2, the back plate 3 and the synthetic resin foamable material 2 or the mixed material are introduced into a vacuum area held to required temp. and the synthetic resin foamable material 2 or the mixed material is foamed and cured in the vacuum area to fill the space part between the back of the surface plate and the back 3a of the back plate.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a siding board useful as an exterior material for buildings and structures, and in particular, only a synthetic resin foam material for heat insulation or sound insulation is provided on the back surface of a siding material which is a surface plate. Alternatively, a mixed material of a synthetic resin foam material and an inorganic material can be foamed in a short time to be hardened, filled and fixed, and a siding board with high fire resistance, heat insulation and mechanical strength can be manufactured with extremely high productivity. The present invention relates to a method of manufacturing a siding board that can be used.

[0002]

2. Description of the Related Art Conventionally, as a method for manufacturing a siding board of this kind, as shown in, for example, Japanese Patent Laid-Open No. 55-37306, (a) foaming is applied to the inner surface of a surface material whose right and left ends are slightly bent inward. First step of pouring a synthetic resin stock solution,
(B) a second step of bringing a back surface material wider than the front surface portion of the surface material into contact with the foamable synthetic resin stock solution, and (c)
Third step of folding the left and right end portions of the back surface material inside the left and right end portions of the surface material while foaming the foamable synthetic resin stock solution
And a fourth step of bending the left and right end portions of the surface material further inward to a predetermined angle (d).

[0003]

By the way, in such a method for manufacturing a siding board, in the third step, the left and right ends of the back surface material are left and right of the surface material while foaming the expandable synthetic resin stock solution. It takes time to fill the foamable synthetic resin undiluted solution between the surface material and the back surface material because it is folded inside the end of the, and the adhesion is poor due to the relationship of this foaming time. Voids are likely to occur, and because the bonding is incomplete, it is brittle against fire and fire resistance, and lacks heat insulation.
It has drawbacks such as waterproofness and vibration resistance, and significantly impairs the quality and productivity of the siding board.

[0004]

The method for producing a siding board by vacuum foam molding of the present invention aims to solve the above-mentioned problems, and the front plate and the back plate are coated with a colored zinc iron plate and vinyl chloride. Steel plate, tin plate, galvanized iron plate, aluminum plate whose surface is anticorrosion processed or coated with synthetic resin, steel plate, etc. Only, or a mixed material of synthetic resin foam material and inorganic material is supplied, the back plate is fixed to the synthetic resin foam material side or the mixed material side, and these front surface plate, back surface plate and synthetic resin foam material or mixed material Material and a synthetic resin foam material or mixed material in the reduced pressure area of the required temperature, and the synthetic resin foam material or the mixed material is foamed in the reduced pressure area, thereby forming a synthetic resin in the space between the back surface of the front plate and the back surface of the back plate. Foaming Alternatively, it is characterized in that the mixed material is foamed and hardened and filled, and the synthetic resin foamed material is a continuous or independent foamed polyurethane foam, polyisocyanurate foam, urea foam, phenol foam, epoxy foam or the like, and an inorganic material The obsidian, pearlite, artificial perlite, continuous or independent artificial inorganic hollow particles, shirasu balloon, vermiculite, borax,
Sodium metaborate, sodium carbonate, aluminum hydroxide,
It is characterized in that it is made of ammonium polyphosphate, a halogen-based flame retardant, a fibrous material, or the like.

[0005]

1 to 4 are views showing a preferred embodiment of a method for producing a siding board by vacuum foam molding according to the present invention, and FIG. 1 is a cross section showing a first step in the production method according to the present invention. FIG. 2, FIG. 2 is a cross-sectional view showing the second step, FIG. 3 is an explanatory view showing the third step in the decompression region of the required temperature, and FIG.
FIG. 3 is a cross-sectional view of a siding board manufactured by the method for manufacturing a siding board by vacuum foam molding of the present invention.

In the first step of the manufacturing method of the present invention shown in FIG. 1, a predetermined amount of an organic material is synthesized on the back surface 1a side of a siding material 1 which is a surface plate which is previously processed into a predetermined shape. The resin foam material 2 is supplied. The siding material 1 is composed of, for example, a colored zinc iron plate, a vinyl chloride-coated mesh plate, a tin plate, a galvanized iron plate, an aluminum plate whose surface is anticorrosive, or a synthetic resin, and a steel plate. Examples of the synthetic resin foam material 2 include continuous or independent foaming polyurethane foam, polyisocyanurate foam, urea foam,
A phenol foam, an epoxy foam or the like is used.

Next, in a second step shown in FIG. 2, a siding material 1 serving as a surface board to which the synthetic resin foam material 2 has been supplied is provided with a back surface plate 3 from the back surface 1a side of the siding material 1 as appropriate. It is fixed by attaching means. The back plate 3 is made of the same material as the siding material 1 to be the front plate, for example, a colored zinc iron plate, a steel plate coated with vinyl chloride, a tin plate, a galvanized iron plate, or a surface coated with a synthetic resin or a synthetic resin. Aluminum plate, steel plate, etc. are used.

Next, in a third step shown in FIG. 3, a non-finished product 4 consisting of the siding material 1 and the synthetic resin foam material 2 which will be the surface plate shown in FIG. Backside 1a of the siding material 1 by foaming the synthetic resin foam material 2 in the depressurized area 5.
The synthetic resin foam material 2 is foamed and hardened and filled in the space 6 between the back surface 3a of the back plate 3 and the back surface 3a of the back plate 3, and the finished product 4a of the siding board as shown in FIG. It is taken out from the reduced pressure area 5. Reference numeral 7 is a decompression pump connected to the decompression region 5 of the required temperature, and the decompression degree of the decompression region 5 of the required temperature can be adjusted appropriately. In this embodiment, the degree of pressure reduction is set to about 57.
6 mmHg to approximately 504 mmHg.

As described above, when the non-finished product 4 is put in the decompression region 5 of the required temperature, foaming occurs regardless of the kind of the synthetic resin foam material 2 and the material and shape of the siding material 1 serving as the surface plate. Since the rate increases and every corner of the siding material 1 is uniformly foamed and hardened and filled in a short time, the siding material 1, the synthetic resin foam material 2 and the back plate 3 have extremely good adhesion and high. It is possible to efficiently manufacture a siding board which is integrally molded with mechanical strength and has good quality in a short time (about 20 to 30% faster than the conventional method) at low cost.

If, for example, the decompression region 5 having a large volume and a required temperature is used, many unfinished products 4 can be decompressed at one time, and high quality siding boards can be mass-produced at the same time with extremely high productivity. It can be manufactured. The front plate 1 and the rear plate 3 may be made of the same material, but needless to say, they may be made of different materials if necessary.

Next, a method of manufacturing a siding board by vacuum foam molding of the present invention will be described. First, after supplying the synthetic resin foam material 2 to the back surface 1a side of the siding material 1 which becomes the front surface plate appropriately processed into a predetermined shape, the synthetic resin foam material 2 side is provided with the back surface plate 3 and unfinished. Product 4, these siding material 1 and synthetic resin foam material 2
The unfinished product 4 including the back plate 3 and the back plate 3 is introduced into the decompression region 5 at the required temperature, and the synthetic resin foam material 2 is foamed in the decompression region 5, whereby the back surface 1a of the siding material 1 is formed. The synthetic resin foam material 2 is foam-hardened and filled in a space 6 between the back surface 3a and the back surface 3a of the back plate 3 in a short time to integrally form a finished product 4a of the siding board,
The finished product 4a is taken out from the reduced pressure area 5 at the required temperature.

Further, instead of only the synthetic resin foam material 2, a mixed material of a synthetic resin foam material and an inorganic material may be used. Examples of the mixed material include synthetic resin foam materials such as continuous or independent foamed polyurethane foams, polyisocyanurate foams, urea foams, phenol foams, and epoxy foams, for example, obsidian, pearlite, artificial perlite, continuous or independent populations. Inorganic hollow particles, shirasu balloon, vermiculite, borax, sodium metaborate, sodium carbonate, aluminum hydroxide, ammonium polyphosphate, halogen-based flame retardants, there is a mixture of inorganic materials such as fibrous materials, but appropriate It is possible to make it hard, semi-hard, or soft by combining the above.

In this case, the siding material serving as the front plate, the mixed material, and the back plate have extremely good adhesion, and are integrally molded with high mechanical strength to provide a good quality siding board excellent in fire resistance and heat insulation. Obtainable.

[0014]

According to the method for producing a siding board by vacuum foam molding of the present invention, the front plate and the back plate are colored zinc iron plates, vinyl chloride coated steel plates, tin plates,
It is composed of galvanized iron plate, aluminum plate whose surface is anticorrosion processed or coated with synthetic resin, steel plate, etc.
Only the synthetic resin foam material or the mixed material of the synthetic resin foam material and the inorganic material is supplied to the back surface side of the front plate which is appropriately processed into a predetermined shape, and the synthetic resin foam material side or the mixed material side is provided with a back surface. By fixing the face plate, the front plate and the back plate and the synthetic resin foam material or the mixed material are put into a reduced pressure region of a required temperature, and by foaming the synthetic resin foam material or the mixed material in the reduced pressure region, The synthetic resin foam material alone or the mixed material of the synthetic resin foam material and the inorganic material is foamed and hardened and filled in the space between the back surface of the front plate and the back surface of the back plate. Regardless of the type of synthetic resin foam and inorganic material and the shape of the front plate and back plate, only the synthetic resin foam material and mixed material Fill evenly in a short time until the surface plate and synthetic resin The foam material or mixed material and the back plate have extremely good adhesion, are integrally molded with high mechanical strength, and are excellent in fire resistance and heat insulation. A siding board of good quality is manufactured efficiently in a short time at low cost. It has the effect of being able to.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a first step in a preferred embodiment of a method for producing a siding board by vacuum foam molding of the present invention.

FIG. 2 is a sectional view showing the second step.

FIG. 3 is an explanatory view showing the third step.

FIG. 4 is a cross-sectional view of a siding board manufactured by the manufacturing method of the present invention.

[Explanation of symbols]

 1 Siding material to be a front plate 1a Back surface of siding material 2 Synthetic resin foam material 3 Back plate 3a Back surface of back plate 4 Unfinished product of siding board 4a Finished product of siding board 5 Decompression area 6 Space 7 Decompression pump

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yuji Nomura 3-22 Matsubara, Soka-shi, Saitama C-22-401

Claims (4)

[Claims] 1. The front plate and the back plate are composed of a colored zinc iron plate, a vinyl chloride-coated steel plate, a tin plate, a galvanized iron plate, an aluminum plate whose surface is anticorrosive or coated with a synthetic resin, and a steel plate. The synthetic resin foam material is supplied to the back surface side of the front surface plate that has been appropriately processed into a predetermined shape, and the back surface plate is fixed to the synthetic resin foam material side. Are placed in a depressurized area at a required temperature, and the synthetic resin foamed material is foamed in this depressurized area, so that the synthetic resin foamed material is foamed in the space between the back surface of the front plate and the back surface of the back plate. A method for producing a siding board by vacuum foam molding, characterized in that the filling is carried out by curing. 2. A siding board by vacuum foam molding according to claim 1, wherein the synthetic resin foam material is polyurethane foam, polyisocyanurate foam, urea foam, phenol foam, epoxy foam or the like which is continuous or independent foam. Manufacturing method. 3. The front plate and the back plate are composed of a colored zinc iron plate, a steel plate coated with vinyl chloride, a tin plate, a galvanized iron plate, an aluminum plate whose surface is anticorrosive or coated with a synthetic resin, a steel plate, and the like. The synthetic resin foam material is mixed with the inorganic material and supplied to the back surface side of the front plate that has been appropriately processed into a predetermined shape, and the mixed material side of the synthetic resin foam material and the inorganic material material is backed. By fixing the face plate, the front plate, the mixed material, and the back plate are both put in a depressurized region of a required temperature, and the mixed material is foamed in this depressurized region, whereby the back surface of the front plate and the back plate A method for producing a siding board by vacuum foam molding, wherein the mixed material is foamed and hardened and filled in a space with the back surface of the. 4. The synthetic resin foam material is continuous or independent foamed polyurethane foam, polyisocyanurate foam, urea foam, phenol foam, epoxy foam, etc., and the inorganic material is obsidian, pearlite, artificial perlite, continuous or independent foam. The artificial inorganic hollow particles, shirasu balloon, vermiculite, borax, sodium metaborate, sodium carbonate, aluminum hydroxide, ammonium polyphosphate, halogen-based flame retardants, fibrous materials, etc. A method for producing a siding board by vacuum foam molding.