JPH0986580A - Method for wrapping heat insulation panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent or decrease warpage from occurring on the whole heat insulation panel by piling a plurality of the heat insulation panels in the same direction to make a unit and piling at least a specified number of units so as to make their directions of the upper and the lower ones alternative to wrap integrally them. SOLUTION: Just after a heat insulation panel 1 constituted by forming a synthetic resin foam 1c between a surface material 1a and a back material 1b is manufactured, one heat insulation panel 1 or a plurality of sheets of the heat insulation panel 1 piled so as to make the upper and the lower directions the same are made to be one unit and at least four A, B, C and D are piled so as to make the upper and lower direction alternative and they are integrally wrapped by using a corrugated board for wrapping. In this case, among at least 4 units, at least one unit consisting of a plurality of heat insulation panels is incorporated and the back face of the heat insulation panel 1 of the lowest unit faces downward and the back face of the heat insulation panel 1 of the uppermost unit faces upward. In addition, if necessary, a protective paper 2 is placed between surfaces of heat insulation panels 1 facing each other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for packing a heat insulating panel such as a building exterior material in which a synthetic resin foam layer is formed between a front material and a back material.

[0002]

BACKGROUND ART In general, a heat insulating panel used as a building exterior material is formed by filling a synthetic resin foam layer between a surface material made of metal or the like and a back surface material made of paper, synthetic resin sheet or the like. It is manufactured by Usually, a plurality of heat insulating panels of this type are stacked and collectively packaged immediately after being manufactured.

By the way, in this type of heat insulating panel, the surface material and the back surface material are different. Immediately after the heat insulating panel is manufactured, the heat insulating panel has a high temperature, and heat is stored in the synthetic resin foam layer. Therefore, when rapidly cooled to about room temperature, warping stress that causes deformation or warpage acts on the heat insulating panel due to contraction of the back surface material or the like.

As shown in FIG. 4A, the heat insulating panel 4
When the sheets are sequentially stacked and packed with the same vertical orientation, the warping stress of each heat insulating panel 4 acts in the same direction, so that the warping is promoted. FIG. 4 (A) shows a case where nine heat insulating panels 4 are packed by the packing cardboard 5. In addition, generally, in a mere plate-shaped heat insulation panel,
It is also possible to use a binding band at the time of packaging and to relax the binding band by tightening the binding band strongly. However, in the case of the exterior material for construction, since the fitting piece is projected to the side portion, a strong tension cannot be applied to the binding band, and it cannot be expected to alleviate the warp due to the binding band.

In order to prevent or reduce the above warpage,
As shown in FIG. 4 (B), a method of stacking the heat insulating panels 4 in such a manner that the upper and lower directions are alternately arranged can be considered. In this method, the warp of the heat insulation panels 4 is canceled by the adjacent heat insulation panels 4. In addition, the back surface of the lowermost heat-insulating panel 4 faces downward, the back surface of the uppermost heat-insulating panel 4 faces upward, and the protective paper 6 is inserted into the surface where the surfaces of the respective heat-insulating panels contact each other. The surface of the heat insulating panel 4 is protected. FIG. 4B shows a case where ten heat insulating panels 4 are packed by the packing cardboard 5. However, in this method, it is necessary to stack the heat insulating panels 4 sent out from the manufacturing line by vertically reversing every other sheet. In addition, the protective paper 6 must be inserted into the surfaces of the heat insulating panels that are in contact with each other (that is, every other heat insulating panel). For this reason, there are problems in that the labor required for packaging increases and the material cost of the protective paper 6 increases.

Conventionally, as shown in FIG.
There is also known a method of dividing a large number of heat insulation panels 4 for one package into upper and lower two groups (see Japanese Patent Publication No. 4-46825). In this method, the back surfaces of the lowermost heat insulation panels 4 of the group located on the lower side are oriented downward, and the back surfaces of the heat insulation panels 4 of the group located on the upper side are oriented upward. Figure 4 (C)
Then, using the corrugated cardboard 5 for packing, the nine heat insulation panels 4 are
It shows the case of packing in two groups of four and five.
In this packing method, since the two groups have different vertical directions of the heat insulating panel 4, the warpage is somewhat reduced. Since the back surface of the lowermost heat insulating panel 4 faces downward and the back surface of the uppermost heat insulating panel faces upward, the surfaces of the uppermost and lowermost heat insulating panels 4 are protected. Also in this case, by inserting the protective paper 6 between the group located on the lower side and the group located on the upper side, the heat insulation panel 4 that abuts via the protective paper 6
The surface is protected. However, in this method, although the warpage of the uppermost one or two heat insulating panels 4 of the lower group and the lowermost one or two heat insulating panels 4 of the upper group is alleviated, For other heat insulating panels, the effect of preventing or reducing the warp tends to be insufficient.

In addition, the weight of the package does not work sufficiently on the heat insulating panel above the group located on the upper side in particular, and the correction effect due to the weight of the warp is extremely small. Therefore, the prevention or reduction of the warpage of the heat insulating panel 4 is insufficient.
In particular, when such a warp becomes large, when the surface of the heat insulating panel is embossed, even if the peripheral portion and the central portion of the heat insulating panel have uniform unevenness immediately after the production, When unpacking for construction, there is also the problem that these irregularities are no longer uniform.

[0008]

SUMMARY OF THE INVENTION The present invention has been proposed in order to solve the above problems, and provides a heat insulating panel packing method capable of preventing or reducing warpage of all the heat insulating panels packed. The purpose is to provide. Another object of the present invention is to provide a heat insulating panel packing method capable of uniformly preventing or reducing the warp of all heat insulating panels by considering the warp correction of the packing set due to its own weight. .

[0009]

SUMMARY OF THE INVENTION According to the heat insulating panel packing method of the present invention, a single heat insulating panel or a vertical direction is provided immediately after the production of a heat insulating panel in which a synthetic resin foam layer is formed between a front material and a back material. With a plurality of heat insulating panels stacked so that the same direction is the same as one unit, four or more units are stacked so that the vertical directions alternate. Then, at least one of the four or more units is a unit composed of the plurality of heat insulating panels, and the back surface of the heat insulating panel of the lowest unit among the four or more units packaged in a package is lower. The uppermost unit has a heat-insulating panel with the back surface facing upward.

The heat insulating panel includes those for exterior building materials such as outer wall materials and roof materials. As the surface material, metal,
Synthetic resin, plywood, etc. are used. Also, as the back material,
Paper, synthetic resin, metal foil, or a laminated body of these is used.

In the present invention, (1) the number of units is 4 or more, (2) these units are alternately stacked, (3) the unit must be composed of a plurality of panels, (4) Since the back surface of the heat insulating panel of the lowermost unit faces downward and the back surface of the heat insulating panel of the uppermost unit faces upward, the minimum number of the heat insulating panels included in one packing set is five. In consideration of transportation convenience (size and weight), the maximum number of heat insulating panels included in one packing set is about 30. Usually, it is preferable that the number of heat insulating panels included in one packing set is 7 to 10.

As is clear from the above conditions (1) to (4), the number of units in the present invention is a multiple of 2 which is 4 or more (that is, 4, 6, 8, ...). Therefore, when packing the heat insulating panel, the vertical direction of each unit is changed at least three times during stacking. In the whole package, the number of heat-insulating panels with the surface facing upward and the heat-insulating panel with the surface facing downward is half when the number of all heat-insulating panels is even, and when the number of heat-insulating panels is odd, an approximate number (the number of upward panels is less than the number of downward panels). Can also be one or more). The number of heat insulation panels constituting one unit may be the same in each unit. Further, when the total number of heat insulation panels is not divisible by the number of units, the number of heat insulation panels of each unit is approximate. For example, when the total number of units is 4 and the total number of heat insulating panels is 10, the number of heat insulating panels forming each unit can be 2, 3, 2, 3, respectively.

Further, the number of heat insulating panels constituting each unit can be positively changed. For example, increase the number of heat insulation panels that make up the unit located on the lower side,
It is possible to reduce the number of heat insulating panels forming the unit located on the upper side. The lower the heat insulating panel is, the greater the warp-correcting action due to the weight of the package becomes. Therefore, by adjusting the number of heat insulating panels that make up each unit as described above, the weight of the package as a whole will be above. The warp correction effect due to is synergistic with the warp prevention effect due to the change of the vertical direction of each unit, and it is possible to reduce the warpage of all the heat insulation panels on average.

According to the present invention, since the back surface of the heat insulating panel of the lowermost unit faces downward and the back surface of the heat insulating panel of the uppermost unit faces upward, the surface of these heat insulating panels is protected. To be In addition, a protective paper can be interposed between the units of the packaged units in which the surfaces of the heat insulating panels face each other. As the protective paper, paper, a plastic film, or a laminated sheet of these is suitable.

In the packing method of the present invention, as in the conventional case, the heat-insulating panels can be collectively packed with a packing material such as a cardboard, a synthetic resin film or a wrap. Further, the heat insulating panels thus stacked can be put together by using a binding band in combination with the above cardboard or the like. Further, the heat insulating panels stacked only with the binding band can be collectively packaged without using the cardboard or the like.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION According to the heat insulating panel packing method of the present invention, there is provided the following heat insulating panel packing structure in which face materials are provided on both surfaces of a synthetic resin foam layer. In this heat insulating panel packaging structure, one heat insulating panel or a plurality of heat insulating panels stacked in the same vertical direction is defined as one unit, and four or more units are stacked so that the vertical directions alternate. The four or more units include at least one stacking unit composed of the plurality of panels, and the panel back surface of the highest unit among the packaged units faces upward, It is characterized in that the lower surface of the panel of the lower unit faces downward.

Further, in these packing structures, a protective paper may be interposed between the units of which the surfaces of the heat insulating panels of the units packaged in a package face each other, if necessary. Further, among the face materials provided on both sides of the synthetic resin foam layer, the face material that is the front surface of the panel may be a thin metal plate, and the face material that is the back surface of the panel may be a flexible material. . Further, the synthetic resin foam layer may be formed of a foamable synthetic resin having a self-adhesive property and a density of 25 to 60 kg / m ³ .

[0018]

EXAMPLE An example in which the heat insulating panel packaging method of the present invention is applied to packaging of exterior building materials will be described below. The heat insulation panel 1 shown in FIG. 1 has a length of 3030 mm, a thickness of 15 mm,
A siding material for vertical beams with a width of 360 mm, 0.2
A surface material 1a made of a 7 mm color coated steel plate, a back material 1b made of a laminate of aluminum vapor-deposited synthetic resin film and kraft paper, and a foam layer 1c made of hard isocyanurate foam. Has a fitting piece 11 and a mounting piece 12 for fitting with each other. Immediately after manufacturing, the temperature of the foam layer 1c of the heat insulating panel 1 is as high as 50 ° C., and the warp is fixed after a certain period of time unless proper measures are taken against the warp. Therefore, in the present embodiment, the warp of the heat insulating panel 1 is prevented or reduced as follows.

A case where nine heat insulating panels 1 are stacked and packaged in a batch will be described below with reference to FIG. First, the first to third heat insulating panels (these are units A) immediately after manufacturing are placed on the packaging cardboard 3 with the back surface facing downward. In addition, in the same unit, the directions in the width direction or the length direction of the heat insulation panels 1 may not be the same, but in the unit A and units B to D described later, convenience and packing at the time of packing The left and right directions are the same for the convenience of solving.

Next, place the protective paper 2 on the heat insulation panel 1,
The fourth and fifth heat insulating panels (these become the unit B) are placed on the protective paper 2 with the back surface thereof facing upward. As a result, the surfaces of the third and fourth heat insulating panels are brought into contact with each other via the protective paper 2, and the occurrence of scratches due to rubbing between the surfaces of both panels is prevented. The size of the protective paper 2 is set so that the surface of the third heat insulating panel and the surface of the fourth heat insulating panel do not come into direct contact with each other, and usually the width and length of the decorative surface of the heat insulating panel are substantially the same. , Large ones are used. In this embodiment, paper is used as the protective paper 2.

Further, the sixth and seventh heat insulating panels (these become the unit C) are placed on the fifth heat insulating panel with the back surface thereof facing downward. Then, the protection paper 2 is placed on the heat insulation panel 7, and the eighth and ninth heat insulation panels (these become the unit D) are placed on the protection paper 2 with the back surface facing upward.

After that, the above units A to D are collectively packaged by the packaging cardboard 3. Although not shown, a binding band can be used for packaging. In this embodiment,
Since the unit direction is changed three times, the warp stress is canceled out between the units, and the heat insulating board hardly warps. Further, in this embodiment, in consideration of the effect of correcting the warp due to its own weight, the number of heat insulating panels of only the lowermost unit A is set to be one more than that of the other units B to D. As a result, there is no inconvenience that the prevention or reduction of warpage of each heat insulating panel constituting the unit A becomes insufficient as compared with the heat insulating panels of the units B to D.

The warp that occurs in the width direction of the heat insulating panel is shown in FIG.
The packing structure according to the present invention shown in (A) and the packing structure according to the conventional method shown in FIG. 4 (C) were packed immediately after production and then measured one week later.
In the packaging structure of (A), the average value of the warp (see reference numeral d in FIG. 3) was 0.35 mm for all the heat insulation panels, whereas in the packaging structure of FIG. Three
The warp for the 7th, 8th and 9th heat insulation panels is 0.60
It was as large as mm. In the packaging structure of FIG. 4 (C), the warpage of the first, fifth and sixth heat insulating panels from the bottom was 0.35 mm as in the packaging method of the present invention. Also in the packaging structure of FIG. 4C, the warpage does not occur in the first heat insulating panel from the bottom because the floor surface on which the packaging body is placed is flat.

In the above embodiment, the units A, B,
The number of the heat insulating panels of C and D is 3, 2, 2, and 2, but the number is not limited to this, and various combinations of numbers can be adopted. ，
The number of heat insulating panels C and D can be 3, 3, 2, 1 or 4, 2, 2, 2 or 1.

Further, in the above embodiment, the case where the total number of heat insulation panels of the package is 9 has been described, but other than this, the number is smaller (however, 5 or more) or more (usually, normally). 30 or less).

For example, in the case where the total number of heat insulation panels in the package is 7, the unit A, the unit A, and the unit A, as shown in FIG.
The number of B, C, D heat insulation panels is 2, 2, 2,
The number of the heat insulating panels of the units A, B, C, and D may be three or two, though not shown.
It is also possible to make one sheet, one sheet, and one sheet.

Further, for example, when the total number of heat insulation panels of the package is 10, the number of units A, B, C, D is 3, 3, as shown in FIG. 2 (C). , 2 sheets, or 2 sheets, and although not shown, for example, the number of heat insulating panels of the units A, B, C, D is 3, 2,
The number of sheets can be vertically symmetrical such as two or three.

In this embodiment, the total number of units is 4, but as described above, the total number of units may be an even number such as 6, 8 ,. For example, the total number of heat insulation panels is 1.
If the number of units is 2 and the total number of units is 6 from A to F,
As shown in FIG. 2D, the units A, B, C, D,
The numbers of E and F can be set to 3, 3, 2, 2, 2, 1, and 1.

In the above-mentioned embodiment, the siding material for vertical beam is described as an example of the heat insulating panel, but it goes without saying that the present invention can be applied to a siding material for horizontal beam.

[0030]

As described above, according to the present invention, the following effects can be obtained. In the present invention, since four or more units are stacked so that the vertical directions alternate, it is possible to effectively prevent or reduce the warpage of all the heat insulation panels. Further, in the present invention, since the number of heat insulating panels forming the lower unit and the upper unit can be changed, for example, by increasing the number of heat insulating panels forming the lower unit than the upper unit, The effect of correcting the warp due to its own weight can be effectively exerted. In particular, since the warpage in both the width direction and the length direction is eliminated, it is possible to provide a heat insulating panel with stable quality. Furthermore, since the protective paper need only be provided between the units, the protective paper does not have an excessive cost.

[Brief description of drawings]

FIG. 1 is a diagram showing an example of a heat insulating panel used in the present invention.

FIG. 2 is a diagram showing a packing structure in the present invention,
(A) is a diagram showing an example of a case where nine heat insulating panels are divided into four units and stacked, (B) is a diagram showing an example of a case where seven heat insulating panels are divided into four units and stacked, (C) is a diagram showing an example in the case of stacking 10 heat insulation panels in 4 units, and (D) is a diagram showing an example in the case of stacking 12 heat insulation panels in 6 units. is there.

FIG. 3 is an explanatory diagram of warpage of a heat insulating panel.

FIG. 4 is a diagram showing a conventional packaging structure, FIG. 4A is a diagram showing a case where heat insulating panels are stacked in the same direction,
(B) is a diagram showing a case where the heat insulating panels are alternately stacked one by one so that the same direction is different in the upper and lower directions, and (C) is a diagram showing a case where the heat insulating panels are stacked in two groups.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Insulation panel 1a Surface material 1b Back surface material 1c Synthetic resin foam layer 11 Fitting piece 12 Mounting piece 2 Protective paper 3 Cardboard for packaging A to F unit

Claims (2)

[Claims] 1. Immediately after the production of a heat insulating panel formed by forming a synthetic resin foam layer between a surface material and a back surface material, one heat insulating panel or one heat insulating panel is stacked in the same vertical direction. With a plurality of heat insulation panels as one unit, stack four or more units so that the vertical direction alternates,
A method of packing an insulating panel to be packaged in a lump, wherein at least one unit including the plurality of insulating panels is included in the four or more units, and among the four or more units collectively packaged, A packing method for a heat insulating panel, wherein the back surface of the heat insulating panel of the lowermost unit faces downward and the back surface of the heat insulating panel of the uppermost unit faces upward. 2. The surfaces of the heat insulation panels face each other,
The heat insulating panel packaging method according to claim 1, wherein a protective paper is interposed between the units and the contact surfaces between the units.