JPH02116522A - Laminated heat insulation sheet and its manufacture and manufacturing device - Google Patents

Abstract

PURPOSE:To obtain a laminated heat insulation sheet superior in insect control effect, by a method wherein a back material is bent to a surface material side along the both side fringes of a heat insulation material running parallel with a longitudinal direction of a laminated heat insulation sheet, joined to an end surface of the heat insulation material to cover the end surface. CONSTITUTION:A surface material 1 is comprised of a corrugated sheet of a zinc plated steel sheet and possesses a groove of a corrugated sheet in a longitudinal direction. A heat insulation material 2 is comprised, for example, of a hard polyurethane foam and a back material 3 is comprised by laminating an aluminum foil to one side of craft paper. At the time of building of the surface material as a roof material by a method wherein the heat insulation material is not provided on a fixed width running along the one side fringe out of both the side fringes which are parallel to the groove of the corrugated sheet of the surface material and the back is left behind as it is in a corrugated form as a piled-up part 4, it is good to superpose the piled-up part 4 upon a laminated heat insulation sheet adjoining to the piled-up part 4. In this instance, an end of a bending part 6 of the back material 3 is removed at a position where it abuts against the surface material 1, in a side end where the heat insulation material 2 is provided up to an end of the surface material 1. However, the bent part 6 of a piled-up part 4 side of the back material 3 is bent along the corrugated sheet of the surface material 1 after abutting against the surface material 1 and joined to the surface material 1 by superposing directly upon the surface material 1.

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention is characterized in that both sides of a synthetic resin foam are sandwiched between two plate-like or sheet-like facing materials, and both sides of the synthetic resin foam are sandwiched between two facing materials. The present invention relates to a laminated heat insulating board coated with the same, and a method and apparatus for manufacturing the same.

[Conventional technology]

BACKGROUND ART Conventionally, laminated heat insulating boards made by injecting a foamable urethane resin liquid between a front face material and a back face material made of corrugated steel plates to form foam have been used as heat insulating roofing materials, wall materials, and the like. The polyurethane foam of these laminated heat insulating boards is exposed at the end faces of their peripheries.

As a method for covering the end faces of a synthetic resin foam sandwiched between two surface materials, as shown in JP-A-49-107371, adhesive tape is attached to the end faces after forming a laminated heat insulating board. or a method of coating the end face with a non-foaming synthetic resin liquid to form a coating film, Japanese Patent Publication No. 46-46
As shown in Publication No. 71 or Japanese Patent Application Laid-Open No. 185612/1983, when foam-molding a laminated heat insulating board, a tape-shaped or narrow plate-shaped covering material other than the surface material is placed on the end surface of the laminated heat insulating board. A method of foam bonding is known.

[Problem that the invention seeks to solve]

A laminated insulation board made by sandwiching insulation material made of polyurethane foam etc. between the conventional corrugated steel sheet and other surface material is used for livestock barns,
When used as a roofing material or wall material for a poultry house, etc., if the end surfaces of the insulation material are exposed, pests such as the larvae of the snail beetle will invade through the end surfaces and damage the insulation material made of foamed resin. There is a problem in that the inside of the insulation material becomes almost hollow due to a large amount of propagation, and the insulation properties deteriorate.

In order to prevent this, the method of pasting adhesive tape or the like on the end face is poor in durability and may peel off during long-term use, and simply coating the end face with paint does not have a complete insect repellent effect. Furthermore, when manufacturing a laminated heat insulating board, the method of placing a covering material on the end face and integrally foaming and bonding the board has the disadvantage that the process is complicated and the manufacturing cost increases.

Therefore, the present invention provides a laminated heat insulating board in which a synthetic resin foam is sandwiched between two face materials. The object of the present invention is to provide a heat insulating board, a simple manufacturing method thereof, and an apparatus used for manufacturing the same.

[Means for solving problems]

In order to achieve the above object, the inventors of the present invention have conducted extensive research, and have found that by bending the ends of the back material that constitutes the laminated heat insulating board and bringing it into contact with the surface material, synthetic resin is We discovered that by foaming, it is possible to easily obtain a laminated insulation board with excellent insect repellent effect that covers the end face of the insulation material.
The present invention has now been completed.

That is, the present invention provides a laminated heat insulating board comprising a surface material made of a metal plate or a synthetic resin plate, a heat insulating material made of a synthetic resin foam, and a sheet-like back material made of metal, synthetic resin, or paper. Both sides of the insulation material (
The gist of the present invention is a laminated heat insulating board characterized in that the back material is bent toward the surface material along the edge of the heat insulating material and bonded to the end surface of the heat insulating material to cover the end surface of the heat insulating material.

Another aspect of the present invention includes a step of continuously spraying a foamable synthetic resin liquid onto the long surface material while keeping the long surface material horizontally and conveying it along its longitudinal direction; a step of continuously bending both ends of the backing material downward by a certain width, and continuously overlapping the backing material on the synthetic resin that is foaming on the surface material; The sandwiched face material and back material are held under pressure from above and below to a constant thickness, and the folded portions on both sides of the back material are held at the foaming curing temperature of the foamable synthetic resin liquid while being pressed from both sides, and conveyed. The gist of this paper is a continuous manufacturing method for a laminated heat insulating board comprising:

Still another aspect of the present invention includes a conveying means for keeping the plate-shaped surface material horizontally and conveying it along its longitudinal direction, and a means for spraying or applying a foamable synthetic resin liquid on the upper surface of the surface material being conveyed. Both sides of the long sheet-like backing material are
A bending means for continuously bending at approximately right angles at a certain distance from each other, and a backing material which is superimposed on the top surface material on which a foaming synthetic resin liquid has been sprayed or applied, and is conveyed while being pressed from above and below. A pressure conveying means, a pressing means for simultaneously pressing the folded portion of the backing material from both sides in the conveying direction during the press conveyance, and a press means for simultaneously pressing the folded portion of the backing material from both sides in the conveyance direction; The gist of the present invention is an apparatus for manufacturing a laminated heat insulating board, which is equipped with a heating means for heating.

In the laminated insulation board of the present invention, the surface material is a surface of a known laminated insulation board such as a metal plate such as a steel plate, a galvanized steel plate, or an aluminum plate, a synthetic resin board, a glass fiber reinforced synthetic resin board, a gypsum board, or a flame-retardant paperboard. Any plate material used as the material can be used. The surface material may be in the form of a flat plate, but a corrugated plate with a corrugated cross section, a corrugated folded plate, or the like may also be used.

Paper, synthetic resin film, metal foil, etc. can be used as the backing material, and sheet materials made by laminating these materials can also be used.

As the synthetic resin foam used as the heat insulating material, thermosetting resin foams such as polyurethane foam, phenol resin foam, urea resin foam, and melamine resin foam are preferably used, and hard synthetic resin foams are particularly preferably used. Polystyrene foam, polyethylene foam and other thermoplastic synthetic resin foams can also be used.

There is no particular limit to the thickness of the synthetic resin foam, but it is between 10 and 5
A thickness of 0now is commonly used.

The heat insulating material may be provided up to the end of the surface material, but a portion of a constant width along one side or two adjacent sides of the surface material may be provided with only the surface material without providing any heat insulating material.

〔Example〕

Next, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view of an example of a laminated heat insulating board of the present invention.

(11 is a surface material made of a corrugated galvanized steel plate, and has corrugated grooves in the longitudinal direction.

(2) is a heat insulating material made of rigid polyurethane foam, (
3) is a backing material made by laminating aluminum foil on one side of kraft paper.

As shown in Figure 1, a heat insulating material is provided along a certain width (width of 1 to 3 crests of the corrugated sheet) along one edge of both edges parallel to the grooves of the corrugated sheet of the surface material. The overlapping part (
4), and when installing it as a roofing material, etc., as shown in Figure 2, this overlapped part (4) is left as an adjacent laminated heat insulating board (5).
) on top of each other. In this case, the surface material (1)
At the side edge where the insulation material (2) is provided up to the edge of the back material (3)
The end of the bent part (6) is cut off at the position where it contacts the facing material (1), but the bent part (6) on the overlapping part (4) side of the backing material (3) is cut off at the position where it contacts the facing material (1). ), it is bent along the corrugated plate of the surface material (11) and is directly overlapped and bonded to the surface material (1).

A constant width (approximately 50 to 100 mm) at one longitudinal end of the laminated heat insulating board (5) is obtained by cutting out most of the backing material (3) and the heat insulating material (2). This is to prevent rainwater from penetrating into the insulation material (2) through the insulation material on the back side of the eaves when the laminated insulation board is used as a roofing material.

FIG. 3 is a front view schematically showing an example of the laminated WT hot plate manufacturing apparatus of the present invention. (7) is a coil of zinc-aluminum-plated steel sheet, which is the raw material for the surface material f1>, and (8) is a roll former that forms the steel sheet (9) pulled out from the coil (7) into a corrugated shape by passing it between a number of rolls. -, and 00 is a preheater for preheating the surface material (11) made of a corrugated steel plate that has exited the roll former (8).

αB is a nozzle that sprays the foamable urethane resin reaction liquid onto the surface material (1), and sprays the foamable urethane reaction liquid while reciprocating in a direction perpendicular to the conveyance direction of the surface material (1). .

α is a backing material roll, and the backing material (3) pulled out from it is bent at right angles at positions of a certain width from both ends by the folding roll αmi. The folding roll 0 beauty, for example, as shown in Fig. 4, consists of a pair of stepped rolls of different diameters that are transferred in contact with each other, and by passing the side edge of the backing material (3) between them, the side edge can be bent downward at a right angle.

0 is a curing chamber, the interior of which is maintained at the curing temperature of polyurethane foam (for example, 60° C.), and is equipped with a double conveyor O5+ consisting of a pair of conveyors vertically spaced apart from each other. The lower conveyor αυ consists of a slat conveyor, and the upper conveyor 0η consists of drive rolls (2
It consists of a belt conveyor equipped with an endless rubber sheet al wound and suspended between a guide roll I2z and a large number of pressure rolls αψ. Endless rubber sheet Ql of upper conveyor αη
Rubber belts r2LI21' having different cross-sectional shapes are wound around the outer periphery of both ends of the rubber belt r2LI21'. One rubber belt (21 has a rectangular cross section, but the other rubber belt I
The cross section of 21' is horizontally long, and the lower surface has a waveform shape that matches the waveform of the surface material (1). These two rubber bells) (2,
(21° is endless and is attached closely to the outer periphery of both ends of the endless rubber sheet α of the upper conveyor OD, and rotates together with the endless rubber sheet 01. Rubber belt (2LC! Φ1
As shown in the cross-sectional view of FIG. 5, they move at the same speed in close contact with the outside of the bent portion (6) of the backing material (3). rubber bell) f2m, C! Bent part (6) of back material (3) of lft'
A plurality of pushers (5) made of elongated metal pieces are arranged along both sides of the part that comes into close contact with the part, and are pushed inward as shown by arrow a by an air cylinder (not shown) or the like. .

The rubber belt C2 (2Φ° moves while being pressed inward while sliding violently with the pusher).

If the backing material (3) is perforated at the bending position before being passed through the folding roll θ hot water, it will be easier to bend it at the specified position and also make it easier to discharge the gas generated when the insulation material (2) is foamed. can do.

(2) is a cross cutter, which is composed of a rotating disk saw, and its rotating shaft moves in the direction of conveyance of the laminated heat insulating board (5) at the same speed as the conveyance speed; traverses the laminated heat insulating board (5) and cuts it to a predetermined length.

A large number of cutting disc saws (manufactured by Co., Ltd.) with the same diameter and smaller diameter are stacked on top of the cutting rotary IM saw of the cross cutter (2) so as to have a constant thickness. When rotated as one unit, laminated I! At the same time as cutting the fr hot plate (5), the back material (3) of a certain width at the end of the laminated heat insulating board (5)
and the insulation material (2) can be removed by cutting.

[Effect]

In order to manufacture a laminated heat insulating board (5) using the apparatus of the embodiment of the present invention, a steel plate (9) pulled out from a steel plate coil (7) is passed through a roll former (8) to form a corrugated plate having grooves in the longitudinal direction. A steel plate is formed and preheated to about 40°C by passing it through a 60-80°C preheater 0ω. Preheated corrugated steel plate (9)
On the top, a foaming urethane reaction liquid made by mixing polyol, polyisocyanate, liquid fluorocarbon gas, etc. is applied to the nozzle α.
When spraying uniformly from υ and forming a superimposed part (4) without the insulation material (2) on one side of the laminated insulation board (5), leave a certain width on one side on the surface material (1). Then, spray the foaming urethane reaction solution.

The foaming urethane reaction liquid is composed of the same components as the reaction liquid for producing known rigid polyurethane foam, and is a mixed liquid of polyol, polyisocyanate, blowing agents such as liquid fluorocarbon gas, reaction accelerators, crosslinking agents, and other necessary additives. The three components, the polyol component, the polyisocyanate component, and the blowing agent component, are mixed immediately before spraying from the nozzle αυ.

The sprayed urethane reaction solution immediately begins to react while foaming.

On the other hand, the backing material (3
), its both sides are passed between a pair of folding rolls 01, and the required constant width portions of the sides are bent downward at approximately right angles. When forming the overlapping part (4), the left and right bending widths are not the same, and the surface material (1) is a fold of the laminated heat insulating board (5) made of corrugated sheet on the side forming the overlapping part (4). Increase the width of section (6).

The back material (3) with the bent portion (6) formed thereon was placed on top of the polyurethane foam that was being foamed with the surface material (1), and the double-conhair 0Sl was placed in the curing chamber 04) kept at the curing temperature. Send in between. It is pressed from above and below between the double conveyor αω to maintain a constant thickness, and two rubber bells) Qφ, 12
1 and a pusher on the outside thereof, it is pressed inward and moved while being heated to the curing temperature.

When forming the overlapping part (4), the rubber belt oIll' on that side further bends the end of the wide bent part (6) of the backing material (3) along the facing material (11), Surface material (
It is preferable to overlap and adhere to 1). This allows the urethane reaction liquid to slightly penetrate between the surface material (1) and the back material (3), and the self-adhesive force of the urethane reaction liquid to react and harden the edges of the surface material (1) and the back material (3). The parts are bonded securely.

Also at the side end of the facing material fl) opposite to the M spine (4), the width of the bent part (6) of the backing material (3) is made slightly larger than the thickness of the heat insulating material (2), If the end of the bent part (6) is bent as shown in Fig. 5 and moved between the rubber bell iω and the lower conveyor αυ, the front material (1) and the back material (3 ) The urethane reaction liquid can be prevented from seeping out from between the lower ends of the bent portion (6) and contaminating the rubber belt QΦ. In this case, after leaving the curing chamber (1 (+), the end of the bent part (6) that protrudes from the edge of the surface material (1) is cut off with a cutter (A).

The surface material (1) and back material (3) are pressed from the top, bottom, left and right, and the urethane foams and hardens while maintaining constant dimensions. It can be finished to a certain size without having to do anything.

Since both ends of the laminated heat insulating board (5) are sealed by the bent parts (6), the expanded urethane foam does not contaminate the device made up of the end faces, and there is no need to cut off the protruding urethane foam. Nor. Also, laminated insulation board (
5) As a result of the foaming pressure of the urethane foam becoming uniform inside, the density of the urethane foam becomes uniform.

After the curing of the urethane foam insulation material (2) is completed, the long laminated insulation board (5) is carried out from the curing room θgen.
is cut into a predetermined length by a cross cutter. At the same time, if necessary, back material (3) and IIIT heat material (2) of a certain width part of one end adjacent to the cut surface.
is cut by a cutting disc saw (Co., Ltd.).

LFR thermal material (
The area of the end face of the 2-inch is small, and by applying a synthetic resin paint containing an insecticide, it can be completely covered with insect repellent.

〔Effect of the invention〕

Is this invention a fault? ! According to the board and its manufacturing method, the end face parallel to the longitudinal direction of the laminated heat insulating board (5) of the heat insulating material (2) made of synthetic resin foam is not exposed at all, resulting in damage caused by pests.
There is no reduction in the insulation effect. The heat insulating material (2) is filled uniformly, there is no protrusion of the foam, and there is no contamination of the manufacturing equipment during foaming. The end face of the heat insulating material (2) of the laminated heat insulating board (5) is integrally covered with the bent portion (6) of the back surface material (3), and no special covering material is required, making it easy and inexpensive to manufacture. The bent portion (6) is in complete contact with the synthetic resin foam, and exhibits extremely remarkable effects such as no risk of peeling off during use.

[Brief Description of the Drawings] Fig. 1 is a perspective view of an example of the laminated heat insulating board of the present invention, Fig. 3 is a perspective view showing an example of the laminated heat insulating board of the present invention in use, and Fig. 3 is a perspective view of an example of the laminated heat insulating board of the present invention. FIG. 4 is a front view schematically showing an example of a manufacturing device for a laminated heat insulating board; FIG. 4 is a cross-sectional view of a folding roll of the same manufacturing device;
FIG. 5 is a sectional view along line AA in FIG. 3. (1) - Surface material, (3) - Back material, (5) - Laminated heat insulating board, (7) - Coil, (91 - Steel plate, OD - Nozzle, 03L - Single folded roll, α - Double Conveyor, +2)-insulation material, (4)-・M spine, +61-m-bending portion, (81-m-roll former αω-preheater, Q2+-・-back material roll, a4J-curing chamber , Oe-lower conveyor, αη-upper conveyor, al-endless rubber sheet, Q-toe/drive roll, (to)-cross cutter 4-pso-shear press roll, C!Φ1--rubber belt, guide roll, cutting circumference m saw , Cutter Patent Applicant Toyo Rubber Industries Co., Ltd. Agent Patent Attorney Yoshiyuki Koyama Surface Material Back Material Laminated Insulation Board Coil Steel Plate Nozzle Bending Roll Double Conveyor Upper Conveyor Endless Rubber Note Drive Roll Cross Cuffter Butcher Insulation Overlapping Section Bending section roll former - Preheater back material roll Curing chamber lower part Conhair press roll Q@1 - Rubber belt guide roll Disc saw cutter for cutting Fig. 4

Claims (5)

[Claims] (1) In a laminated heat insulating board formed by laminating a surface material made of a metal plate or a synthetic resin plate, a heat insulating material made of a synthetic resin foam, and a sheet-like back material made of metal, synthetic resin, or paper,
A laminated insulation board characterized in that the back material is bent toward the surface material along both side edges of the insulation material parallel to the longitudinal direction of the laminated insulation board, and bonded to the end surface of the insulation material to cover the end surface. Board. (2) The synthetic resin foam is a thermosetting synthetic resin foam, and the adhesive force of the synthetic resin foam when foaming and curing allows the folded portion of the heat insulating material and the backing material to be bonded to the heat insulating material and the backing material. The laminated heat insulating board according to claim 1, which is bonded to the surface material. (3) Claim 1, wherein the surface material has a corrugated cross section.
Laminated insulation board as described. (4) A step of continuously spraying a foamable synthetic resin liquid onto the long surface material while keeping it horizontal and conveying it along its longitudinal direction, and a back material made of a long sheet. Continuously bending both ends downward by a certain width each to continuously overlap the backing material onto the synthetic resin that is foaming on the surface material, and the surface sandwiching the foamable synthetic resin. The step of holding the material and the backing material to a constant thickness by pressing from above and below, and pressing the bent portions on both sides of the backing material from both sides while maintaining the foaming and curing temperature of the foamable synthetic resin liquid and transporting the material. Continuous manufacturing method for laminated insulation boards. (5) A conveying means for keeping the plate-shaped surface material horizontal and conveying it along its longitudinal direction, a means for spraying or applying a foamable synthetic resin liquid on the upper surface of the surface material being conveyed, and a long sheet-like bending means for continuously bending the backing material at substantially right angles at positions a certain distance from both ends of the backing material; and overlapping the backing material on the top surface material on which a foamable synthetic resin liquid has been sprayed or applied. A pressing means for conveying while pressing from above and below; a pressing means for simultaneously pressing the folded part of the backing material from both sides in the conveying direction during the pressing conveyance; A manufacturing apparatus for a laminated heat insulating board, comprising a heating means for heating a synthetic resin liquid to a foaming curing temperature.