JPH0691672A - Continuous production of siding board by vacuum foam molding - Google Patents

Abstract

PURPOSE:To continuously produce a siding board by molding a continuously sent-out surface plate having a required width into a predetermined shape and supplying a foamable material to the back of the molded plate and continusouly supplying a back plate to fix the same to the back of the surface plate and subsequently foaming the obtained uncompleted product in a vacuum area. CONSTITUTION:A surface plate 1 with a predetermined width composed of a copper plate whose surface is subjected to anticorrosion processing is continuously sent out by a guide roller 3 to be molded into a predetermined shape by a molding machine 4. A predetermined amt. of a foamable material 6 is supplied to the back 1a of the surface plate 1 by a synthetic resin foamable material emitting device 5 and a back plate 7 is continuously supplied to the back 1a of the surface plate 1 from an emitting device 7 to be appropriately fixed thereto to form a continuous uncompleted product 9. Next, the uncompleted product 9 is sent to a vacuum area 10 and the foamable material 6 is foamed and cured to form a continuous completed product 9 which is, in turn, cut by a cutter 12 to obtain a single completed product 9a. Therefore, a siding board can be efficiently and continuously produced at low cost.

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 synthetic resin foam material and inorganic material can be foamed in a short time and hardened, filled and fixed, and a siding board with high fire resistance, heat insulation and high mechanical strength can be continuously produced in large quantities with extremely high productivity. The present invention relates to a continuous manufacturing method of a siding board that can be manufactured as follows.

[0002]

2. Description of the Related Art Conventionally, as a continuous manufacturing method of this type of siding board, as shown in, for example, JP-A-55-37306, (a) the inner surface of a surface material whose right and left ends are slightly bent inward. A first step of pouring the expandable synthetic resin stock solution into (2), and (b) a second step of bringing a back surface material wider than the surface portion of the surface material into contact with the expandable synthetic resin stock solution.
(C) A 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 expandable synthetic resin stock solution, and (d) There is a continuous manufacturing method of a siding board, which comprises a fourth step of bending the end portion further inward to a predetermined angle.

[0003]

By the way, in such a continuous manufacturing method of a siding board, in the third step, the left and right ends of the backing material are covered with the surface material while foaming the expandable synthetic resin stock solution. Since it is folded inside the left and right ends, it takes time for the foamable synthetic resin stock solution to be filled between the surface material and the back surface material, and due to this foaming time, the adhesion is poor and the back surface of the siding board Is vulnerable to fire and fire resistance because the voids are easily generated and the joint is imperfect, and it lacks heat insulation and has drawbacks such as waterproofness and vibration resistance. It was also a serious obstacle to the quality and productivity.

[0004]

SUMMARY OF THE INVENTION In order to solve the above problems, the method for continuously producing a siding board by vacuum foam molding of the present invention has a surface plate and a back plate coated with a colored zinc iron plate and vinyl chloride. A steel plate, tin plate, galvanized iron plate, aluminum plate whose surface is anticorrosive or coated with synthetic resin, steel plate, etc. Then, 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 that has been appropriately molded into a predetermined shape, and is continuously sent out. The back plate is fixed to the synthetic resin foam material side or the mixed material side, and both the front plate, the back plate and the synthetic resin foam material or the mixed material are fed into a decompression region of a required temperature, and in this decompression region, The synthetic resin foam material or the mixed 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 by foaming the synthetic resin foam material or the mixed material. 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 artificial inorganic hollow particles. , Shirasu balloon, vermiculite, borax, sodium metaborate, sodium carbonate, aluminum hydroxide, ammonium polyphosphate, halogen-based flame retardants, fibrous materials and the like.

[0005]

1 to 6 are views showing a preferred embodiment of a continuous production method of a siding board by vacuum foam molding of the present invention, and FIG. 1 is a schematic configuration showing the steps of the continuous production method of the present invention. Fig. 2 is a cross-sectional view showing the first step, FIG. 3 is a cross-sectional view showing the second step, FIG. 4 is a cross-sectional view showing the third step, and FIG. 5 is a fourth step in the decompression region of the required temperature. FIG. 6 is a sectional view showing the siding board manufactured by the method for continuously manufacturing a siding board by vacuum foam molding according to the present invention.

A method for continuously manufacturing a siding board by vacuum foam molding of the present invention will be described with reference to FIGS. In FIG. 1, reference numeral 1 denotes a siding material which is continuously fed by a feeder 2 and is conveyed by a guide roller 3 and which has a predetermined width and is made of, for example, a metal plate, and 4 is a siding which is continuously fed by the guide roller 3. This is a molding machine for appropriately molding the material 1 into a predetermined shape as shown in FIG. 2 (first step). The siding material 1 serves as a surface plate, and is, for example, 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. Etc. The thickness is preferably about 0.2 mm to 1 mm. As the synthetic resin foam material 2, for example, continuous or independent foaming polyurethane foam, polyisocyanurate foam, urea foam, phenol foam, epoxy foam or the like is used.

Next, the siding material 1 which is a surface plate that has been appropriately formed into a predetermined shape in the first step is intermittently or continuously conveyed by the guide roller 3, and as shown in FIG. The synthetic resin foam material discharger 5 supplies an appropriate predetermined amount of synthetic resin foam material 6 to the back surface 1a side of No. 1 (second step). Further, on the siding material 1 to which the synthetic resin foam material 6 has been supplied, a back surface plate 8 having a required width which is continuously fed from the back surface 1a side of the siding material 1 by a feeder 7 is continuously provided in the longitudinal direction. Non-finished product 9 of a continuous body, which is fixed as appropriate, as shown in FIG.
Are formed (third step).

The synthetic resin foam material 6 is generally made of a hard resin such as polyurethane, polyisocyanurate, polyimide, phenol or epoxy, but may be semi-hard or soft. As a means for fixing the back plate 8 to both sides 1b, 1c of the siding material 1, both may be fixed by an adhesive, or the end of the siding material 1 may be folded inward together with the end of the back plate 8. Both may be fixed. The back plate 8 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, the surface of which is anticorrosive or coated with a synthetic resin. Aluminum plate, steel plate, etc. are used.

Next, an unfinished product 9 of a continuous body as shown in FIG. 4 in which a back plate 8 is fixed to a siding material 1 serving as a front plate to which the synthetic resin foam material 6 is supplied is shown in FIG. As shown, the pressure is continuously fed to the decompression region 10 at an appropriate required temperature, and the synthetic resin foam material 6 is foamed in this decompression region 10 to thereby form the back surface 1a of the siding material 1 and the back surface of the back plate 8. The synthetic resin foam material 6 is foamed and hardened and filled in the space 11 with the space 8a in a short time to form a finished product 9a as a continuous body (fourth step). The finished product 9a of the continuous body is continuously sent out from the decompression region 10 of the required temperature, and the siding material 1 and the back plate 8 are simultaneously cut by a cutting machine 12 arranged outside the decompression region 10, The finished product 9a of a single siding board as shown in FIG. 6 is manufactured. Reference numeral 13 is a decompression pump connected to the decompression region 10 of the required temperature, and the decompression degree of the decompression region 10 of the required temperature can be adjusted appropriately. In this embodiment, the degree of pressure reduction is approximately 576 mmHg to approximately 504 mmHg.

As described above, when the non-finished product 9 is put in the depressurized area 10 at the required temperature, the foaming rate increases regardless of the kind of the synthetic resin foam material 6 and the shape of the siding material 1 serving as the surface plate. However, since every corner of the siding material 1 is uniformly foam-hardened and filled, the siding material 1, the synthetic resin foam material 6 and the back plate 8 can be formed in an extremely short time (about 20 to 30% compared to the conventional method). A siding board that is integrally molded with good adhesion and good quality can be efficiently manufactured continuously in large quantities at low cost. The front plate 1 and the rear plate 8 may be made of the same material, but needless to say, they may be made of different materials if necessary.

Next, a method for continuously producing a siding board by vacuum foam molding of the present invention will be described. First,
The siding material 1 which becomes a surface plate having a required width and which is continuously fed is molded into a predetermined shape by a molding machine 4, and the rear surface 1a side of the siding material 1 molded into the predetermined shape is appropriately processed. After the synthetic resin foam material discharger 5 supplies a predetermined amount of the synthetic resin foam material 6 to the synthetic resin foam material 6, the back plate 8 that is continuously fed is supplied and fixed to the synthetic resin foam material 6 side. The siding material 1 and the back plate 8 are continuously fed into a decompression region 10 at a required temperature, and the synthetic resin foam material 6 is foamed in the decompression region 10 to obtain the siding material. A finished product 9a of a continuous body is formed by filling the space 11 between the back surface 1a of 1 and the back surface 8a of the back plate 8 with the synthetic resin foam material 6 by foaming and hardening. The finished product 9a of the continuum is continuously and sequentially sent out from the decompression region 10 at the required temperature, and the siding material 1 and the back plate 8 are simultaneously cut by the cutting machine 12 outside the decompression region 10 to obtain the present invention. To manufacture a finished product 9a of a single siding board.

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 continuously producing a siding board by vacuum foam molding of the present invention, the front plate and the rear plate are colored zinc iron plate, a steel plate coated with vinyl chloride, a tin plate, a galvanized iron plate, and the surface is anticorrosion. Synthetic resin foam material only on the back side of the surface plate, which is made of an aluminum plate, steel plate, etc. that has been processed or coated with synthetic resin, and has a required width that is continuously fed Or a mixed material of a synthetic resin foam material and an inorganic material is supplied, and a back plate continuously fed to the synthetic resin foam material side or the mixed material side is fixed, and these front surface plate, back surface plate and synthetic resin are fixed. Both the foam material and the mixed material are fed into a decompression region of a required temperature, and the synthetic resin foam material or the mixed material is foamed in this decompression region, so that the space between the back surface of the front plate and the back surface of the back plate is emptied. Since only the synthetic resin foam material or the mixed material of the synthetic resin foam material and the inorganic material is foam-hardened and filled in the part, the synthetic resin foam material alone or the synthetic resin foam material of the mixed material is used. Regardless of the type of inorganic material and the shape of the front plate and the back plate, only the synthetic resin foam material and the mixed material are filled evenly in every corner of the front plate and the back plate in a short time. The synthetic resin foam material or the mixed material and the back plate have good adhesion in a very short time and are integrally molded with high mechanical strength, and the siding board of good quality with excellent fire resistance and heat insulation effect can be manufactured in a short time and at low cost. Thus, it has an effect that it can be efficiently mass-produced continuously.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing steps in a preferred embodiment of a continuous siding board manufacturing method by vacuum foam molding according to the present invention.

FIG. 2 is a cross-sectional view showing the first step.

FIG. 3 is a sectional view showing the second step.

FIG. 4 is a cross-sectional view showing the third step.

FIG. 5 is a cross-sectional view showing the fourth step.

FIG. 6 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 1b, 1c Both sides of siding material 2 Feeder 3 Guide roller 4 Molding machine 5 Synthetic resin foam material discharge machine 6 Synthetic resin foam material 7 Delivery machine 8 Back plate 8a The back surface of the back plate 8 9 An unfinished product of a continuum 9a A finished product of a siding board 10 A decompression area 11 A space part 12 A cutting machine 13 A decompression pump

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Internal reference number FI Technical display area B29K 105: 16 B29L 9:00 4F 31:10 4F (72) Inventor Yuji Nomura Matsubara, Soka City, Saitama Prefecture 3-chome 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 surface plate having a required width that is continuously sent out is molded into a predetermined shape as appropriate, and the synthetic resin foam material is supplied to the back surface side of the surface plate that is molded into the predetermined shape. The back plate that is continuously sent out is supplied and fixed to the synthetic resin foam material side, and both the front plate and the back plate to which the synthetic resin foam material is supplied are sent to the decompression region of the required temperature, and in this decompression region. And a synthetic resin foam material is foamed to fill the space between the back surface of the front surface plate and the back surface of the back surface plate with the synthetic resin foam material. Continuous board manufacturing method. 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. Continuous manufacturing method. 3. 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 steel plate, an aluminum plate whose surface is anticorrosive or coated with a synthetic resin, and a steel plate. In addition, a front surface plate having a required width that is continuously fed is molded into a predetermined shape as appropriate, and a synthetic resin foam material is made of an inorganic material on the back surface side of the surface plate molded into the proper shape. Is mixed and supplied, and the back plate that is continuously fed is fixedly supplied and fixed to the mixed material side of the synthetic resin foam material and the inorganic material, and both the front surface plate and the back surface plate to which the mixed material is supplied are supplied. The mixed material was sent to a decompression region of a required temperature, and the mixed material was foamed in this decompressed region so that the space between the back surface of the front plate and the back surface of the back plate was foam-hardened and filled. Reduced pressure foaming characterized by Continuous siding board manufacturing method by molding. 4. The synthetic resin foam material in the mixed material is a continuous or independent foamed polyurethane foam, polyisocyanurate foam, urea foam, phenol foam, epoxy foam or the like, and the inorganic material is obsidian,
Pearlite, artificial perlite, continuous or independent artificial inorganic hollow particles, shirasu balloon, vermiculite, borax, sodium metaborate, sodium carbonate, aluminum hydroxide, ammonium polyphosphate, halogen-based flame retardants, fibrous materials, etc. The method for continuously producing a siding board by vacuum foam molding according to claim 3, wherein