JPS60172688A - Method of packaging long-sized panel - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for packaging long panels whose core material is made of synthetic resin foam.

Generally, male and female connecting parts are provided on the side edges of a surface material made of a thin metal plate shaped like a gutter, as shown in Figure 1, and the gutter-shaped part is filled with synthetic resin foam B, and the back side is sealed. A long panel coated with the monolithic material C has a problem of uneven warping at the point where the width becomes wider. To explain further, when producing this type of panel on a normal continuous line,
The curing time of the synthetic resin foam B is about 1 to 3 minutes. However, since the reaction and foaming of the synthetic resin foam 13 takes about 24 hours, it is clear that the reaction and foaming will not be completed within the above time, and the decorative surface will have an uneven appearance depending on the packaging state. became.

The present invention utilizes the reaction and foaming properties described above in packaging to eliminate warpage on decorative surfaces during packaging, and also provides a long panel in which the synthetic resin foam is cured under heat retention in the packaged state. This provides a packaging method for The present invention will be described in detail below using the drawings. Figure 2 ta+,
(bl is a cross-sectional view for explaining the packing method according to the above invention and an explanatory diagram showing the packing order. In the figure, 1 is a long panel, which is the same as in FIG. 1, and is a long panel immediately after manufacturing. The temperature of the panel itself is 30 to 70 DEG C. 2 is a spacer made of one or more of paper, cardboard, synthetic resin film, or a laminate of these.

Note that the width W1 of the spacer 2 is a length corresponding to the length of the long panel 1 to be stored, since W1≧W2, where W2 is the width of the decorative surface 3 of the long panel 1. 4 is a case made of material such as cardboard or synthetic resin, and its cross-sectional area is
The length is set according to the length and number of long panels 1 to be stored. Therefore, in order to package the long panel 1 as shown in Figure +81, first, immediately after manufacturing, the temperature of the long panel 1 is 3.
When the temperature is 0 to 70°C, the number of long panels 1 for one pack is divided into 2 groups), and the decorative surfaces 3 are directed downward and upward as shown in figure (b), respectively. Place the spacer 2 on the decorative surface 3- of the group of long panels located below, and place the group on the second side with the group facing downward, so that the cross section is +8
Pack it in Case 4 as shown in Figure 1. Further, the same process may be performed when the number of long panels 1 in one pack is 6 or 8.

If the packaging is done in the manner described above, the unreacted synthetic resin foam B will gradually react and foam after packaging, heading toward completion, and the reaction heat will cause the inside of the case 4 to become synthetic resin foam. The temperature is gradually increased from a temperature higher than the curing temperature of body B. At this time, the two groups of long panels 5-1-bright whose decorative surfaces are packaged and overlapped are stacked facing each other, and the long panels 1 are pressed into their original shape in the case 4. Because of the fact that the decorative surface 3 is foamed,
The trough-like formation during cooling is mutually corrected, and there is an effect that warping does not occur.

Next, in order to clarify the effects of the present invention, Examples and Comparative Examples will be compared.

<Example> Long panel I Length 10 sheets Temperature 45°C Sushi surface width 356 Number of sheets 10 Packing form As shown in Figure 2 (a) <Comparative example> Long panel I Length 10 sheets Temperature 18° C (room temperature) Decorative surface width: 356 mm Number of sheets: 10 Packing form: After packaging the example and comparative example described in Figure 3, they were left at room temperature for two days and nights, and then case 4 was unpacked, and as shown in Figure 4. When the elongated panel 1 was placed facing downward on a horizontal table 70 made of inorganic material as shown in , and the gap Δh between the panel and the table 7 was measured, the following results were obtained.

(Δh: [dragon], σ1: standard deviation, R: range of variation [dragon]) As described above, according to the method of packaging long panels according to the present invention, This has the advantage that warpage in the shape of the product is naturally corrected during the packaging, inventory, and distribution processes, resulting in virtually no warping. ■Since the long panel is divided into two groups and the groups face each other, and spacers are interposed in the areas where the decorative surfaces contact each other, there is no i14 scratches on the decorative surfaces.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view of a long panel, Figure 2 (81, (bl
3 is a cross-sectional view and a stacking process diagram for explaining the method of packing long panels according to the present invention, FIG. 3 is a cross-sectional view showing a packing form of a comparative example, and FIG. 4 is an explanation showing a method for measuring warpage. It is a diagram. ■... Long panel, 2... Spacer, 4... Case. Patent Applicant IG Technology Research Institute Co., Ltd. Part 1 Part 2 Part 4 Part 4

Claims (1)

[Claims] (1) A rectangular surface material made of a thin metal plate is formed into a gutter shape, and male and female connecting structures are formed on both sides of the surface material, and the gutter-shaped portion is filled with synthetic resin foam, and the back surface In this method, the temperature of the long panels is 30 to 70°C, and the long panels to be packed in one bank are The panel group is divided into two groups, the long panels constituting each group are stacked in the same direction, the two groups are brought into contact with each other with the decorative surfaces of the long panels facing each other, and a spacer is interposed between the contact surfaces between the two groups. A method of packaging long panels characterized by the following.