JPS59184645A - Laminated embossed metallic plate - 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 provides a laminated plate in which a synthetic resin layer is interposed between two metal plates in a sandwich-like manner and fused or bonded together, and at least one of the metal plates is provided with an uneven pattern. The present invention relates to a laminated embossed metal plate having excellent soundproofing properties and design, which is characterized by having an air layer inside the convex portion.

Conventionally, the following methods have been employed to manufacture embossed metal plates with various uneven patterns on the surface of the metal plate. In other words, there is a roll forming method in which a metal plate is passed between a set of iron embossing rolls with an uneven pattern, and a metal plate is sandwiched between a mold and a flat rubber plate. Manufacturing methods include press molding, engraving, electrolytic etching, and chemical etching.

There are two types of embossed metal plates: when the plate thickness is relatively thick, there are so-called single-sided embossed metal plates, which have an uneven pattern on only one side of the metal plate, and when the plate thickness is relatively thin, there are two types of embossed metal plates: There are double-sided embossed metal plates on both the front and back sides, which are embossed in the forward and reverse directions. Embossed metal plates such as these are used in various ways depending on the purpose because of their excellent design and strong rigidity. For example, the board thickness is 0.
Even with a thin material of about 27 mTl, when both sides are embossed, the bending rigidity is improved by about 20% compared to a material without embossment.

Secondary products made from thin embossed metal sheets that have such strong rigidity include sizing and shutters. This embossed sizing is widely used for the walls of ordinary houses and factories, as well as door panels for thick materials. However, even if the rigidity is strong, if the plate thickness is thin, the so-called soundproofing performance in transmitting outdoor noise indoors or vice versa is poor. In order to prevent the transmission of noise, there are products that have embossed sizing with plasterboard or urethane foam pasted on the back side.

Among the shutters using Ushida embossed metal plates, the embossed metal plates for the outside of the building and the embossed metal plates for the inside of the building are the ones that maintain the soundproofing purpose and design on both the outside and inside of the building. Some also have a soundproofing material such as urethane foam interposed between them. however,
All such secondary processed products of embossed metal plates have the disadvantage of being expensive.

Another use of embossed patterns from the standpoint of design is embossed shunters for entrances and exits of buildings, which are embossed on both sides of a painted metal plate.

In addition, the embossed shutters mentioned above and general shutters that are not embossed are both made of a single metal plate, so they currently generate a considerable amount of noise when opening and closing and due to wind pressure. .

The present invention proposes an inexpensive laminated embossed metal plate in order to eliminate the above-mentioned drawbacks.

The laminated embossed metal plate of the present invention consists of two base materials each having an uneven pattern (hereinafter referred to as embossed metal plate), or one of which is an embossed metal plate and the other is a non-embossed metal plate. An air layer is provided between the inner sides of the convex portions of the two metal plates and the synthetic resin sheet layer, and the synthetic resin sheet layer is interposed between the two metal plates and fused or bonded.

Hereinafter, the present invention will be explained in detail with reference to Examples.

FIG. 1 is an enlarged sectional view of one example of a laminated embossed metal plate according to the present invention, in which 1 and 1'' are embossed metal plates, and 2 is an embossed metal plate.
It is a synthetic resin sheet layer located between the embossed metal plates 1 and 1°, and is usually formed of a synthetic resin film. 3 indicates a concave portion of the embossed metal plate, 4 indicates a convex portion of the embossed metal plate, and 5 indicates an air layer.

The laminated embossed metal plates used in the present invention include cold-rolled steel plates and various plated steel plates (Zn, 'A4, Zn-A
4 alloy, Fe Z11 alloy), or stainless steel plate, and the thickness of the embossed metal plate is 0.6 p.
It is preferable that when nI11 or less, the depth of the unevenness is 0.5qnrn or less. In addition, the metal plate may be colored appropriately depending on the purpose of use, and even better effects can be achieved in terms of design.

Although polypropylene is suitable as the synthetic resin film used in the product of the present invention, it is not necessarily limited to polypropylene, and any synthetic resin that can be fused to the embossed metal plate can be used. Furthermore, the synthetic resin may be bonded to the embossed metal plate under pressure using an adhesive instead of being fused to form a laminated embossed metal plate. Furthermore, the synthetic resin film does not necessarily need to be fused or adhered to each of the two embossed metal plates before being laminated, and when the two embossed metal plates are laminated, As long as the film or sheet has an air layer inside the convex portion, the synthetic resin layer may be fused and bonded to only one side of the embossed metal plate.

An example of an actual manufacturing method for obtaining the product of the present invention will be described below. A hot-dip galvanized steel plate with a plate thickness of 0.27111111 and a metal weight of 108 g/m" on one side was made with an embossed pattern with a difference in unevenness, that is, an emboss depth of 0.2 inch, and an air layer was created inside the convex part of the embossed pattern. A polypropylene film with a thickness of 300 μm was laminated in the same manner, and then the two laminate plates were stacked so that the film surfaces faced each other, and the temperature of the plates was set to 19[]”C, and the pressure was 5.
A laminated embossed metal plate coil was obtained by pressure welding at k1710ytf or less.

In order to measure the noise of the laminated embossed metal plate according to the present invention, the laminated embossed metal plate was formed into a test specimen having the shape and dimensions shown in FIG. From the height of 9.5 mmφ1 weight 6,
A 5g steel ball was placed continuously (l) on the top surface of the test object.
An indicating sound level meter [trade name,
It was measured using the A characteristic of Rion NA-OP type, manufactured by Rion Co., Ltd., and expressed in db.

As a comparative example, two non-embossed metal plates not according to the present invention with a thickness of 27 tnm were laminated, and a hot-dip galvanized steel plate with a thickness of 06III11 and an aluminium-plated steel plate were used, respectively, so that the plate thicknesses roughly corresponded to The noise of test specimens made of steel sheets, stainless steel sheets, and cold-rolled steel sheets each embossed and molded in the same manner as the test specimen made of the product of the present invention was measured, and the results are shown in the table below.

In the above table, the noise level of the laminated embossed metal plate according to the present invention is 56 to 6 decibels (db), and in particular, the noise level of the galvanized steel plate and the aluminized steel plate, which are used for profiteering, is the lowest db. The noise was a bit noisy, but it was enough to have a normal conversation. In the case of stainless steel plates, db is slightly higher, but this is thought to be because stainless steel is generally hard. The noise level was similar to that of a crowded city.

On the other hand, in a comparative example not based on the present invention, the noise level was 1
The noise level is about 02 to 105 db, which is about twice as high as in the case of the present invention, and the noise level is such that it is impossible to have a conversation with the person in front of you and makes you want to cover your ears. That is, the noise level is about the same level as when waiting for a train to pass under a guard or in a noisy factory, and it can be seen that the laminated embossed metal plate of the present invention has excellent soundproofing properties. Tests 1 to 5 are similar to the present invention, and although they are similar to the present invention in terms of noise, they are lacking in design because they do not have embossing.

Therefore, the laminated embossed metal plate of the present invention can omit the complicated process of pasting gypsum board or foamed urethane on the back side of the conventional embossed sizing of a single plate, and the pressurizing force is simple with less than 5 to ν. Since an air layer is provided between the two metal plates, the amount of synthetic resin film used can be reduced by approximately 25% compared to when no air layer is provided. Because it is thin, it is suitable for items that require workability, such as rain door materials and shutters, and its strength can be improved by embossing.
Not only is it effective for soundproofing, but it also has an excellent design, so it can be widely used as a building material and for other purposes.In addition to its excellent soundproofing properties, it also has many other features, making it of great industrial value. .

[Brief explanation of the drawing]

FIG. 1 is an enlarged sectional view of a laminated embossed metal plate, and FIG. 2 is a diagram of the shape and dimensions of the test specimen. In the figure, 1,1°: Embossed metal plate 2: Synthetic resin layer 5: Four parts of metal plate 4: Convex portion of metal plate 5: Air layer

Claims (1)

[Scope of Claims] 1. A synthetic resin sheet layer is interposed between two metal plates, at least one of which is embossed in a concave-convex pattern, and the convex pattern on the embossed surface and the synthetic resin sheet layer A laminated enphos metal plate having an air layer between the metal plate and the concave pattern portion and flat plate portion of the metal plate are fused or adhered to a synthetic resin sheet layer.