JP2000170276A - Heat insulating panel and its manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat insulating panel capable of reducing the production cost and maintenance cost, preferable for environment protection, and capable of suppressing the reduction of its heat insulating property, and provide its manufacturing method. SOLUTION: Both side sections of a first face member 1 are folded at two positions in the width direction of the first face member 1 respectively to form erect side walls 18 folded to the horizontal inside of the first face member 1 on the free end side. A hard polyurethane foam material is foamed on the first face member 1, both end sides in the width direction of a second face member 2 are received from above on folded sections 18A on the free end side of the erect side walls 18, and a hard polyurethane foam body 14 is stuck to the first and second face members 1, 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a heat insulating panel and a method for manufacturing the same.

[0002]

2. Description of the Related Art A conventional heat insulating panel is formed by foaming a rigid polyurethane foam material between a lower first face member and an upper second face member, and manufactured by the following method. .

That is, a rigid polyurethane foam material is supplied onto the first face material and foamed while the lower first face material and the upper second face material are fed out in the longitudinal direction, and the rigid polyurethane foam is formed. A sandwich material adhered to the first and second face materials is continuously formed, and both sides of the sandwich material are cut along a longitudinal direction with a side cutter to set the width of the sandwich material, and the sandwich material is cut to a predetermined length. To obtain a heat insulating panel.

As described above, the width of the sandwich material is set by cutting the both sides of the sandwich material along the longitudinal direction because the width of the sandwich material is simply increased while the rigid polyurethane foam material is foamed. This is because each sandwich material varies, and in the conventional method, a cutting step using a side cutter is indispensable.

[0005]

However, the above-mentioned prior art has the following problems.

[A] Since the width of the sandwich material is set by cutting both sides of the sandwich material along its longitudinal direction, (a1) waste material comes out as industrial waste and the cost of processing the waste material is high. . Disposing of waste materials is also undesirable from the viewpoint of environmental protection. (A2) A side cutter mechanism is required, and the production or purchase of the mechanism is costly. Further, maintenance of the side cutter mechanism is required, such as replacement of the cutter when the life of the side cutter reaches the end of its life. (A3) A dust collector for collecting dust generated by cutting is required.

[B] Since both sides of the sandwich material are kept cut by the side cutter along the longitudinal direction, (b1) the foaming gas forming the cells of the rigid polyurethane foam is outside the cut surface. It is easy to get out to one side. (B2) Therefore, the thickness of the rigid polyurethane foam between the first face material and the second face material on the end side may be reduced (shrinkage phenomenon). Due to the above (b1) and (b2), the heat insulating property is reduced.

[C] The rigid polyurethane foam between the first face material and the second face material has both ends in the width direction exposed. (C1) Both ends in the width direction exposed to the rigid polyurethane foam Insects stick from. When used in pig houses, poultry houses, and other livestock houses, such insect damage is particularly likely to occur. (C2) At the time of packing / transportation, other objects may interfere with both ends in the width direction of the rigid polyurethane foam, and the foam may be chipped.

[0009] Due to the above (c1) and (c2), the heat insulating property is reduced as in the case of the above [B].

As a second conventional technique, there is the following manufacturing method.

The lower first face material and the upper second face material are fed out in the longitudinal direction, and the rigid polyurethane foam material is supplied and foamed on the first face material while feeding the side paper in a vertical position. Then, a sandwich material in which the rigid polyurethane foam is bonded to the first and second face materials / side paper is continuously formed, and the sandwich material is cut into a predetermined length to obtain a heat insulating panel.

However, in this manufacturing method, the first and the second
It is difficult to position the side paper with respect to the face material, and there is a manufacturing error that the first and second face materials are separated from the upper and lower ends of the side paper, and the rigid polyurethane foam material may leak out from between them. Was. In such a case, the hard polyurethane foam that has leaked out and hardened must be cut, and the above problems [A] to [C] cannot be solved.

[0013] Even if the above-mentioned positioning is accurately performed, the first and second face materials and the side paper are separate because the first and second face materials are separate from the side paper. In some cases, the rigid polyurethane foam material leaks out from between the upper and lower ends and solidifies.
The problem [C] cannot be solved.

The present invention has been made in view of the above circumstances, and its object is to reduce manufacturing costs and maintenance costs, which is preferable in terms of environmental protection, to improve the yield, and to reduce heat insulation. It is an object of the present invention to provide a heat-insulating panel capable of suppressing the occurrence of heat and a method for manufacturing the same.

[0015]

The constitution, operation and effect of the invention according to claim 1 are as follows.

[Structure] Each of both side portions of the first face material is bent at two places in the width direction of the first face material, and the free end side is bent to the laterally inward side of the first face material to form a rising side wall. Forming and foaming the rigid polyurethane foam material on the first face material, and the width direction both ends of the second face material,
A heat insulation panel in which a rigid polyurethane foam is adhered to the first and second face members by being received from below by a bent portion on the free end side of the rising side wall.

[Action] [I] The heat insulating panel according to the above-described configuration is characterized in that both sides of the first and second face members and the rigid polyurethane foam foamed therebetween and adhered to the two face members are arranged in the longitudinal direction. Since it is not cut along, (a) the waste material does not come out as industrial waste, and therefore, the cost for processing the waste material can be reduced to zero and the natural environment does not deteriorate.

(B) The step of cutting both sides of the sandwich material by the side cutter, which was required in the prior art, can be omitted, and the side cutter mechanism is not required, and the cutter can be used when the cutter reaches the end of its life. Maintenance such as replacement becomes unnecessary. Further, a dust collector for collecting cutting dust is not required.

[II] Since both sides of the rigid polyurethane foam between the first and second face members are received by the rising side walls, (c) highly heat-insulating foam forming cells of the rigid polyurethane foam Gas can be prevented from leaking out to the lateral outside of the rigid polyurethane foam.

(D) As a result, it is possible to prevent the thickness of the rigid polyurethane foam from decreasing at the end.

[III] Since the rigid polyurethane foam between the first and second face members rises at both ends in the width direction and is covered with the side wall, (e) the hard polyurethane foam is less likely to stick to insects. When used in pig houses, poultry houses, and other livestock houses, it is advantageous because it can prevent insect damage.

(F) It is possible to prevent chipping of the foam due to interference of other objects with both ends in the width direction of the rigid polyurethane foam during packing and transportation.

[Effect] Accordingly, it is possible to provide a heat insulating panel which can reduce the manufacturing cost and the maintenance cost, which is preferable in terms of environmental protection, can improve the yield, and can suppress a decrease in the heat insulating property. .

The structure, operation and effect of the invention according to claim 2 are as follows.

[Structure] Each of both side portions of the first face material is bent at two places in the width direction of the first face material, and a free end side is bent to a laterally inward side of the first face material to form a rising side wall. Forming and foaming the rigid polyurethane foam material on the first face material, and the width direction both ends of the second face material,
A rigid polyurethane foam is adhered to the first and second face members by being received from above from a bent portion on the free end side of the rising side wall.

[Operation] In addition to the same operation as the operation according to the first aspect, the both ends in the width direction of the second face member are connected to the bent portion on the free end side of the rising side wall from above. Since it is received, the heat insulation panel can be manufactured as follows, for example.

The rigid polyurethane foam material is supplied onto the lower first face material, and the upper second face material is disposed below the bent portion and placed on the liquid rigid polyurethane foam material, and the second face material is placed on the lower surface. The material is raised by the foaming force of the rigid polyurethane foam material, and both ends in the width direction of the second face material are received by the bent portions from above.

In this case, the rigid polyurethane foam material is received by the rising side wall and the bent portion, and hardly leaks from the peripheral portions of the first and second face materials.

Thus, the rigid polyurethane foam becomes the first
And a state of being adhered to the second face material.

In other words, according to the second aspect of the present invention, the rigid polyurethane foam material can be brought into contact with the first and second face materials at an early stage of the reaction during the production. Since the foam material can be leveled with the second face material, the foaming state can be easily made uniform, and the adhesive force to the first face material and the second face material can be easily strengthened.

[Effect] Accordingly, it is possible to provide a heat insulating panel which can reduce the manufacturing cost and the maintenance cost, which is preferable from the viewpoint of environmental protection, can improve the yield, and can further suppress the deterioration of the heat insulating property. Was.

The structure, operation and effect of the invention according to claim 3 are as follows.

[Structure] While the lower first face material and the upper second face material are fed out in the longitudinal direction thereof, each of both side portions of the first face material is divided into two in the width direction of the first face material. Bending at a location, the upper end side forms a rising side wall which is bent inward of the first face material, and a rigid polyurethane foam material is supplied and foamed on the first face material being fed, and the first face material is foamed. The width-direction both ends of the two-faced material are received by the bent portion on the upper end side of the rising side wall from below, and a rigid polyurethane foam is continuously formed with the sandwich material adhered to the first and second face materials, The sandwich material is cut into a predetermined length in the longitudinal direction to obtain a heat insulating panel.

[Operation] While the lower first face material and the upper second face material are fed out in the longitudinal direction thereof, each of both side portions of the first face material is placed at two positions in the width direction of the first face material. And bend at
The upper end forms a rising side wall which is bent inward in the horizontal inward direction of the first face material.

Then, the rigid polyurethane foam material is supplied and foamed on the first face material being fed, and both ends in the width direction of the second face material are received by the bent portion from below. In this case, the rigid polyurethane foam material is received by the rising side wall and the bent portion, and hardly leaks from the peripheral portions of the first and second face materials.

Thus, a sandwich material in which the rigid polyurethane foam adheres to the upper and lower face materials is continuously formed.

Next, the sandwich material is cut into a predetermined length in the longitudinal direction to obtain a heat insulating panel. In other words, according to the configuration of claim 3, since both sides of the sandwich material are not cut along the longitudinal direction, the same operation as the operations (a) and (b) by the configuration of claim 1 can be achieved. it can.

Further, since both sides of the rigid polyurethane foam between the first and second face members are received by the rising side walls, the same effects as the functions (c) and (d) according to the first aspect are obtained. be able to.

Further, the rigid polyurethane foam between the first and second face members has both ends in the width direction rising and covered with the side walls, so that the function (e) according to the first aspect of the present invention can be obtained.
The same operation as (f) can be achieved.

[Effect] Accordingly, it is possible to provide a method of manufacturing a heat insulating panel which can reduce the manufacturing cost and the maintenance cost, which is preferable in terms of environmental protection, can improve the yield, and can suppress the deterioration of the heat insulating property. did it.

The structure, operation and effect of the invention according to claim 4 are as follows.

[Structure] While the lower first face material and the upper second face material are fed out in the longitudinal direction thereof, each of both side portions of the first face material is divided into two in the width direction of the first face material. At the location, the upper end side forms a rising side wall bent inward of the first face material, and supplies a rigid polyurethane foam material onto the first face material being fed, and the second face material The rigid polyurethane foam material is foamed in a state where it is positioned below the bent portion on the upper end side of the rising side wall, and both ends in the width direction of the second face material are received by the bent portion from above,
A sandwich material in which a rigid polyurethane foam is adhered to the first and second face members is continuously formed, and the sandwich material is cut into a predetermined length in a longitudinal direction to obtain a heat insulating panel.

[Operation] While the lower first face material and the upper second face material are fed out in the longitudinal direction, both sides of the first face material are respectively placed at two positions in the width direction of the first face material. And bend at
The upper end forms a rising side wall which is bent inward in the horizontal inward direction of the first face material.

The rigid polyurethane foam material is supplied onto the lower first face material, and the upper second face material is disposed below the bent portion and placed on the liquid rigid polyurethane foam material. The two-faced material is raised by the foaming force of the rigid polyurethane foam material, and both ends in the width direction of the second faced material are received by the bent portions from above. The rigid polyurethane foam material is received by the rising side wall and the bent portion, and hardly leaks from the peripheral portions of the first and second face materials.

Thus, the rigid polyurethane foam becomes the first
And adhere to the second face material.

Next, the sandwich material is cut into a predetermined length in the longitudinal direction to obtain a heat insulating panel. That is, according to the configuration of claim 4, since both sides of the sandwich material are not cut along the longitudinal direction, the same operation as the operation (a) or (b) by the configuration of claim 1 can be achieved. .

Since both sides of the rigid polyurethane foam between the first and second face members are received by the rising side walls, the same effects as the operations (c) and (d) according to the first aspect are obtained. be able to.

Further, the rigid polyurethane foam between the first and second face members has both ends in the width direction rising and covered with the side walls, so that the function (e) according to the first aspect of the present invention can be obtained.
The same operation as (f) can be achieved.

In addition, during manufacture, the rigid polyurethane foam material can be brought into contact with the first and second face materials at an early stage of the reaction, and the rigid polyurethane foam material is leveled with the second face material as described above. This makes it easier to make the foaming state uniform and to make the adhesive strength to the first face material and the second face material easy.

[Effect] Accordingly, it is possible to provide a method of manufacturing a heat insulating panel which can reduce the manufacturing cost and the maintenance cost, is preferable in terms of environmental protection, can improve the yield, and can further suppress the deterioration of the heat insulating property. Was completed.

The structure, operation and effect of the invention according to claim 5 are as follows.

[Structure] In the structure according to the third or fourth aspect of the present invention, a hole for foaming gas is formed at the upper end of the rising side wall.

[Operation] In addition to providing the same operation as the operation according to the third or fourth aspect, foaming gas emitted from the rigid polyurethane foam material can be prevented from accumulating at the upper end of the side wall.

[Effects] Therefore, in addition to the effects similar to the effects obtained by the configuration of claim 3 or 4,
The rigid polyurethane foam can be prevented from being easily deformed and defective products can be prevented from appearing.

[0055]

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 and 2, a first and a second feeding roller 3 for respectively feeding a lower first face material 1 and an upper second face material 2 each made of paper in the longitudinal direction thereof. , 4 are provided, and while each of the first and second face materials 1 and 2 is being fed, each of both sides of the first face material 1 is bent at two places in the width direction of the first face material 1 so that the upper end is the first side material. A hard polyurethane foam material in which a foaming agent or the like is blended on the first face material 1 being fed is provided with a bending mechanism 5 that forms a bent rising side wall 18 (see FIG. 7) on the lateral inner side of the face material 1. And a double conveyor 7 for pressing and supporting the double-sided materials 1 and 2 from above and below against the foaming pressure of the rigid polyurethane foam material, and a dividing device (not shown) for manufacturing heat insulating panels. Is configured.

The folding mechanism 5 is provided with a first roller mechanism 8 on the upper side and a second roller mechanism 9 on the lower side in the conveying direction of the first and second face materials 1 and 2.

As shown in FIG. 3, the first roller mechanism 8 bends both sides of the first face material 1 upward to form a bent portion 18A on the upper end side of the rising side wall 18, and the second roller mechanism 8 In FIG. 9, as shown in FIG. 4, the side wall of the first face material 1 is further bent to form the rising side wall 18.

The first and second roller mechanisms 8 and 9 respectively include upper and lower rollers 10 and 11 with respect to both ends of the first face material 1 and face material portions protruding from the upper and lower rollers 10 and 11 respectively. Frustum-shaped lateral roller 1 that presses from the lateral outer side as the first and second face materials 1 and 2 are fed out
2

Although not shown, a tape attaching mechanism for attaching a double-sided tape to both ends in the width direction of the second face material 2 is provided, and both ends in the width direction of the second face material 2 are connected via the double-sided tape. Along with being configured to adhere to the bent portion 18,
At the upper end of the rising side wall 18, a hole is formed by a drilling mechanism in a lateral direction for the foaming gas.

As shown in FIG. 1, the supply device 6 is disposed below the second face material 2, and as shown in FIG. The first mixing head 16 corresponding to the left half and the second mixing head 16 corresponding to the right half
And a mixing head 17. Then, the hard polyurethane resin material is supplied onto the first face material 1 while the first mixing head 16 and the second mixing head 7 are reciprocated in the width direction in the corresponding areas. .

First and second mixing heads 16 and 17
Are operated so that the pattern of the rigid polyurethane foam material for the first face materials 1 becomes the pattern shown in FIG. In other words, the peak of the waveform pattern on the first mixing head 16 side and the second injection mixing head 17
The operation is performed so that the valleys of the side wave pattern are adjacent to each other in the width direction of the first face material 1. Further, the strokes of the horizontal reciprocating movement of the first and second mixing heads 16 and 17 can be changed and adjusted.

As shown in FIG. 6, the rising side wall 18 is moved in the horizontal direction so that the rising side wall 18 of the first face material 1 is held in the rising position against the foaming pressure of the rigid polyurethane foam material. Side belt 15 facing
Is configured to receive and support from the lateral outside side.

Since the rising side wall 18 is received and supported by the side belt 15 from the lateral outer side, for example, it is easy to accurately set the right angle of the rising side wall 18 with respect to the lower surface of the first face member 1 and the panel width. In addition, it is easy to prevent a production error from occurring.

In the transport direction of the first and second face materials 1 and 2, on the lower side of the first and second mixing heads 16 and 17,
An ironing roller 13 (see FIG. 1) is provided to apply an ironing action to the rigid polyurethane foam material supplied from the first and second mixing heads 16 and 17 onto the first face material 1.

Next, a method of manufacturing a heat insulating panel by the present facility will be described.

1) While the first and second members 21 and 22 are being fed out in the longitudinal direction by the feeding rollers 3 and 4, both side portions of the first face material 1 are bent upward by the first roller mechanism 8 to form the rising side wall 18. Bend 18A at the upper end
(See FIGS. 3 and 7 (a) and (b)), and the side portion of the first face material 1 is further bent by the second roller mechanism 9 to form the rising side wall 18 in an upright posture (FIGS. 4 and 4). 7
(C)).

2) A double-sided tape is adhered to both widthwise ends of the lower surface of the second face material 2 by a tape adhering mechanism, and holes for foaming gas are formed at the upper end of the rising side wall 18 by a perforating mechanism. .

3) The rigid polyurethane foam material is supplied from the first and second mixing heads 16 and 17 onto the first face material 1 being fed, and the second face material 1 is raised and bent at the upper end of the side wall 18. The rigid polyurethane foam material is foamed while being positioned below 18A (see FIG. 7 (d)).

4) The second face material 2 is placed on the liquid rigid polyurethane foam material, the second face material 2 is raised by the foaming force of the hard polyurethane foam material, and both ends in the width direction of the second face material 2 are bent. The part 18A is received from above (see FIG. 7 (e)).

5) The first and second mixing heads 16,
The rigid polyurethane foam material supplied from 17 onto the first face material 1 is subjected to an ironing action from an ironing roller 13.

6) Both ends in the width direction of the second face material 2 are adhered to the bent portion 18A via the double-sided tape to continuously form a sandwich material.

7) The heat insulating panel A is obtained by dividing the sandwich material into a predetermined length in the longitudinal direction.

That is, the heat insulating panel A is shown in FIG.
As shown in the figure, each of both side portions of the first face material 1 is bent at two places in the width direction of the first face material 1 so that the free end side is bent to the laterally inward side of the first face material 1 and the rising side wall 18A Is formed, and the rigid polyurethane foam material is foamed on the first face material 1, and both ends in the width direction of the second face material 2 are received by the bent portion 18 A on the free end side of the rising side wall 18 from above, The rigid polyurethane foam 14 is formed by bonding to the first and second face materials 1 and 2.

As described in 6), the bent portion 18A
The both ends in the width direction of the upper second face material 2 received on the upper surface are adhered to the bent portion 18A, so that the unity of the first face material 1 and the second face material 2 can be improved, and the rigid polyurethane foam The airtightness of the foam 14 can be improved, and foreign matter and insects can be easily prevented from entering the rigid polyurethane foam 14 from between the bent portion 18A and the upper face material.

For example, the means for supplying the rigid polyurethane foam material onto the first face material 1 while reciprocating and laterally moving one mixing head over the entire width of the first face material 1 uses the forward and return paths of the first face material 1. Each move takes time. For this reason, the interval between the rigid polyurethane foam material supplied in the forward path and the rigid polyurethane foam material supplied in the return path (the interval in the longitudinal direction of the first face material 1) tends to be too large, and the rigid polyurethane foam material is transferred to the first face material. 1, it becomes difficult to make it uniform.

On the other hand, the first mixing head 16
And the second mixing head 17 as described above.
Since the rigid polyurethane foam material is supplied onto the face material 1, the time required for the first face material 1 to move in the forward and backward directions can be reduced, and the rigid polyurethane foam material can be made uniform on the first face material 1. It is easy to make the foaming state uniform.

For example, when manufacturing a plurality of types of rigid polyurethane foams having different thicknesses, in the second conventional technique, a plurality of types of side papers having different widths must be prepared. Although there is a problem that the operability is reduced due to the necessity, the supply method using the first and second mixing heads 16 and 17 can easily change and adjust the supply width of the rigid polyurethane foam material, It can easily respond to changes in panel width standards.

As a result, when a plurality of types of rigid polyurethane foams having different thicknesses are manufactured, for example, the first and second mixing may be performed easily. Head 16, 1
By changing and adjusting the supply width of the rigid polyurethane foam material according to 7, step change can be omitted, and workability can be improved.

[0080]

DESCRIPTION OF THE PREFERRED EMBODIMENTS When the thickness of the first and second face materials 1 and 2 is 100 microns and the width of the heat insulating panel A is 900 mm, the length of the rising wall 18 is 70 mm (the length of the bent portion 18A). Was set to 20 mm). That is, when manufacturing the heat insulating panel A of this size, the width of the lower face material 2 is 900 + 50 + 50 + 20 + 20 = 1040 (mm).
It is. The length of the bent portion 18A may be about 15 mm. The hole diameter of the foaming gas is 0.3.

In this type of heat insulation panel A, the first and second
The thickness of the face materials 1 and 2 is generally 50 to 500 microns, but preferably 100 to 200 microns in consideration of the self-sustainability and cost of the paper. The hole diameter of the foaming gas is generally from 0.1 mm to 1.0 mm, preferably from 0.3 mm to 0.7 mm.

The above numerical values are merely examples, and the present invention is not limited to these numerical values.

[Alternative Embodiment] The rigid polyurethane foam material is supplied from the first and second mixing heads 16 and 17 onto the first face material 1 being fed, and the second face material 1 is supplied to the first face material 1.
The hard polyurethane foam material is foamed in a state in which the face material 2 is located above the bent portion 18A on the upper end side of the rising side wall 18A, and both ends in the width direction of the second face material 2 are placed on the bent portion 18 at the lower side. , And both ends in the width direction of the second face material 2 may be adhered to the bent portion 18A via the double-sided tape to continuously form the sandwich material.

FIG. 8 shows a heat insulating panel A manufactured by this method.

That is, the heat insulating panel A is made of the first face material 1
Are bent at two places in the width direction of the first face material 1 to form a rising side wall 18A whose free end is bent inward of the first face material 1 in a laterally inward direction. While foaming the rigid polyurethane foam material,
Both ends in the width direction of the second face member 2 are received by the bent portion 18A on the free end side of the rising side wall 18 from below,
The rigid polyurethane foam 14 is divided into the first and second face materials 1,
2 is formed by bonding.

The first and second roller mechanisms 8 and 9 are
9 (a), 9 (b), and 9 (c), the second face materials 1 and 2 are configured so as to be capable of changing the position in the width direction. A plurality of types of heat insulating panels A having different thicknesses can be formed.

The first roller mechanism 8 and the second roller mechanism 9
Are provided in a plurality of steps in the feeding direction of the first and second face materials 1 and 2, respectively, so that the lower the side in the feeding direction, the more the rising wall 18 of the lower face material 2 rises and the last step. May be configured to be set at a right angle.

The bent portion 18A of the first face material 1 may be bonded to both ends in the width direction of the second face material 2 with an adhesive. After the double-sided tape is bonded to the bent portion 18A, both ends in the width direction of the second face material 2 may be bonded to the double-sided tape. Further, the bonding of both ends in the width direction of the second face material 2 to the bent portion 18A of the first face material 1 may be performed by a hot melt method.

The bonding may be omitted only by receiving both ends in the width direction of the second face material 2 by the bent portion 18A.

The supply device 6 is not limited to the one having the above-described structure. For example, the rigid polyurethane resin material is supplied to the first face material 1 by using one fixed-position or reciprocating-type mixing head. It may be configured as follows.

In order to improve the water resistance, a resin material may be laminated on the outer surfaces of the first and second face materials 1 and 2.

The first and second face materials 1 and 2 may be made of a thin metal plate or a resin film other than paper.

A preliminary mixing head is provided for each of the first mixing head 16 and the second mixing head 17, and when the rigid polyurethane foam material on the first mixing head 16 and the second mixing head 17 side is no longer supplied, Subsequently, a rigid polyurethane foam material may be supplied to the first face material 1 from the preliminary mixing head.

[Brief description of the drawings]

FIG. 1 is a schematic side view of a facility for manufacturing an insulating panel.

FIG. 2 is a schematic plan view of a heat insulation panel manufacturing facility.

FIG. 3 is a longitudinal sectional front view showing a first roller mechanism.

FIG. 4 is a longitudinal sectional front view showing a second roller mechanism.

FIG. 5 is a view showing a method of injecting a rigid polyurethane foam material by first and second mixing heads.

FIG. 6 is a front view of a cutting tree showing an operation state of a side belt.

FIG. 7 is a schematic perspective view showing a method of manufacturing a heat insulating panel.

FIG. 8 is a longitudinal sectional front view of a heat insulating panel manufactured by a method according to another embodiment.

FIG. 9 is a longitudinal sectional front view of another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 1st face material 2 2nd face material 14 Rigid polyurethane foam 16 1st mixing head 17 2nd mixing head 18 Rising side wall 18A Bent part

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (Reference) E04C 2/26 E04C 2/26 VF term (Reference) 2E001 DD01 DH13 FA26 GA11 GA82 HD03 2E162 CD02 4F100 AK51B BA03 BA06 BA10A BA10C BA13 DB07A DG10A DG10C DJ01B EH112 EJ022 GB07 JJ02 JK12B JL02 4F213 AA42 AD06 AE02 AG03 AG20 AH46 WA02 WA52 WA72 WA89 WB01 WB13

Claims (5)

[Claims] 1. The first face material is provided on both sides of the first face material by the first face material.
It is bent at two places in the width direction of the face material, and the free end is the first material.
A bent rising side wall is formed on the laterally inward side of the face material, and a rigid polyurethane foam material is foamed on the first face material, and both ends in the width direction of the second face material are connected to the free end side of the rising side wall. A heat insulating panel in which a rigid polyurethane foam is adhered to the first and second face members by receiving the bent portion from below. 2. A method according to claim 1, wherein each of both sides of the first face material is the first material.
It is bent at two places in the width direction of the face material, and the free end is the first material.
A bent rising side wall is formed on the laterally inward side of the face material, and a rigid polyurethane foam material is foamed on the first face material, and both ends in the width direction of the second face material are connected to the free end side of the rising side wall. A heat insulation panel in which a rigid polyurethane foam is adhered to the first and second face members by being received by a bent portion from above. 3. A first lower surface material and an upper second surface material are fed out in the longitudinal direction thereof, and each of both side portions of the first lower surface material is set in two widthwise directions of the first lower surface material. At the place, the upper end side forms a rising side wall which is bent inward in the laterally inward side of the first face material. The rigid polyurethane foam material is supplied and foamed on the first face material being fed, and the second foam material is foamed. The width direction both ends of the face material are received by the bent portion on the upper end side of the rising side wall from below, and a rigid polyurethane foam is continuously formed with the sandwich material adhered to the first and second face materials. A method for manufacturing a heat insulating panel in which a material is cut into a predetermined length in a longitudinal direction to obtain a heat insulating panel. 4. A first lower surface material and an upper second surface material are fed out in the longitudinal direction thereof, and each of both side portions of the first surface material is separated by two in the width direction of the first surface material. At the place, the upper end side forms a rising side wall which is bent to the laterally inward side of the first face material, and while supplying the rigid polyurethane foam material on the first face material being fed, the second face material is The rigid polyurethane foam material is foamed in a state where the rigid polyurethane foam material is located below the bent portion on the upper end side of the rising side wall, and both ends in the width direction of the second face material are received by the bent portion from the upper side. A method of manufacturing a heat insulating panel, wherein a sandwich material in which a foam is adhered to the first and second face materials is continuously formed, and the sandwich material is cut into a predetermined length in a longitudinal direction to obtain a heat insulating panel. 5. The method for manufacturing a heat insulating panel according to claim 3, wherein a through hole for a foaming gas is formed at an upper end portion of the rising side wall.