JPH039469B2 - - Google Patents

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to an integrated display product in which a metal plate on which characters, figures, patterns, etc. are displayed is encapsulated in a transparent hard material, and the display integrated product. Regarding manufacturing methods.

(Conventional technology) Conventionally, characters,
Display metal plates with arbitrary markings such as figures and patterns are used as plate numbers for automobiles, advertising display boards, etc. However, they are generally relatively thin and do not bend due to impact or cause damage to the human body. Due to the risk of damage and from the standpoint of increasing the decorative effect, transparent hard synthetic resin molded plates such as acrylic resin are laminated into one body on both sides of the display metal plate by insert molding etc. It is conceivable to provide an integrated product for display.

(Problem to be Solved by the Invention) The above-mentioned combined product is subject to temperature changes (-40°C to +80°C) in the natural environment, and the display metal plate and the hard synthetic resin molded plate are combined together. Because there is a significant difference in the coefficient of thermal expansion of aluminum (for example, the coefficient of thermal expansion of aluminum material is about 2.6 to 3.6 times that of acrylic resin material), repeated expansion and contraction of the two materials may eventually lead to delamination between the two materials and hard synthetic resin materials. Cracks occur in the resin molded plate.

(Means for Solving the Problems) The present invention solves the above-mentioned drawbacks and provides a stable and robust combined product for display purposes. A metal plate is housed in a state in which at least the front side of the metal plate is interposed between the metal plate and the container and covered with an adhesive covering layer which is a transparent layer.

(Example) Embodiments of the present invention will be described based on the accompanying drawings.

1 and 2 show an example of the present invention, in which 1 consists of a lower container 1a and an upper lid 1b made of transparent hard synthetic resin such as acrylic resin or polycarbonate resin. Both 1
A hard envelope container 1c is shown in which the joints of parts a and 1b are airtightly bound by adhesive or heat welding, and the inside of the envelope container 1 is colored gold in advance and subjected to oxidation-resistant coating treatment. A display metal plate 2 made of aluminum on which a suitable display 2a such as letters or figures is printed or etched on the surface of the metal plate 2.
This is an integrated product for display, which is housed with a transparent adhesive enveloping layer 3 interposed between the enveloping container 1 and the enveloping container 1. The lower container 1a may be opaque. The adhesive enveloping layer 3 covers the lower surface of the metal plate 2 and the lower container 1.
a lower coating layer 3a adhesively interposed on the inner bottom surface of a;
It consists of a circumferential side coating layer 3b adhesively interposed between the circumferential side surface of the metal plate 2 and the circumferential side surface of the lower container 1a on the outer periphery thereof, and an upper coating layer 3c adhesively interposed between the upper surface of the metal plate 2 and the upper lid 1b. If the lower container 1a is made of an opaque material, only the upper coating layer 3c on the front side of the metal plate 2 may be made of a transparent adhesive, and the rest may be made of an opaque adhesive. The integrated product for display of the present invention can be seen through the transparent lid 1b, which is the front wall, and the transparent upper adhesive coating layer 3c, and the display 2a of the display metal plate 2 is
It can be applied as a so-called decorative display board, and when the display metal plate 2 repeatedly expands or contracts in response to large changes in the environmental temperature during its use, the display metal plate 2 is covered in its entirety. Since the flexibility of the adhesive enveloping layer 3 is present between the container 1 and the container 1, the adhesive enveloping layer 3 absorbs the expansion of the metal plate 2, allows its contraction, and reduces its adhesion. This allows the metal plate 2 to be fixed and held in a good condition at a predetermined position at all times, and when the metal plate 2 expands, the container 1 is prevented from being deformed or deformed by pressing the peripheral wall surface from the inside. Cracks are prevented from forming.
In addition, the space between the metal plate 2 and the envelope container 1 is filled with the envelope adhesive 3, eliminating any voids.
There is no fear of peeling of the seal portion 1c due to air expansion due to heat, and a stable and robust combined product for display is provided. As the adhesive, any of various conventional adhesives can be used, but in particular,
It is preferable to use a material that is initially liquid, but then hardens at room temperature or by heating to become a sticky gel-like material. For example, Toray Silicone Co., Ltd.
When using liquid transparent silicone resin CX52-267A and liquid cross-linking agent CX52-267B, mix equal amounts and pour into the lower container 1a before opening the lid, it will harden as a sticky gel-like material by leaving at room temperature or heating. By forming the adhesive enveloping layer 3, in particular, the void between the metal plate 2 and the lower container 1a can be filled in a liquid state, so that filling and envelopment with the adhesive without voids can be obtained. Good workability and high quality products can be obtained.

This type of silicone resin always maintains a gel-like adhesive property and is stable under operating environmental temperatures that vary from extremely hot to extremely cold.

Although not shown, the surface of the transparent lid 1b may be formed into a curved surface like a convex lens or a concave lens to produce a lens effect. Third
The figure shows a product constructed by insert-molding a box-shaped transparent lid 1b using an injection molding machine, in which the circumferential side of the lower container wall 1a is encased and protected, and the lid 1c is heat-fused and bonded into one body. show.

One example of the manufacturing method of the above-mentioned combined display product of the present invention is to inject an adhesive into the inner bottom surface of the lower container 1a, form a lower coating layer 3a with an appropriate thickness on the inner bottom surface, and cover the upper surface of the layer 3a with an adhesive. The display metal plate 2 is placed with a space between the circumferential side and the inner circumferential side of the lower container 1a, and then an adhesive is applied to the outer circumferential side of the metal plate 2 and the upper space of the lower container 1a. After the container 1a is filled up to the upper end of its periphery, a lid 1b is placed on its upper surface, and its periphery is hermetically tied to the upper periphery of the lower container 1a.

Instead of the above manufacturing method, as a more rapid manufacturing method, a double-sided adhesive sheet material is used as follows.

The embodiment will be explained based on FIGS. 4 and 6.

As shown in FIGS. 4 and 5, a lower container 1a made of opaque hard synthetic resin is prepared, and any commercially available double-sided pressure-sensitive adhesive sheet material 4 prepared in advance is applied to the inner bottom surface of the container 1a as a base material 4a. Adhesive layer 3 on the bottom of
A predetermined display metal plate 2 is attached to the surface of the adhesive coating layer 3a on the upper surface of the base material 4a, with a small amount of space between the circumferential side and the inner circumferential side of the lower container 1a. There is a four-circumferential space 5, and the adhesive is attached to the central surface of the space 5.

Next, the above-mentioned transparent curable adhesive liquid is filled into the cavity 5 and covered with the upper surface of the metal plate 2 to an appropriate thickness, and then a transparent lid is placed on the upper surface. 1b is adhered to the filled adhesive surface, and the joint 1c between the lid 1b and the upper edge of the lower container wall 1a is airtightly bonded using an adhesive or high-frequency heating.

Over time, the adhesive liquid hardens and becomes a sticky gel-like substance in about 24 hours, and the peripheral side coating layer 3b and the upper coating layer adhere to the inner surface of the envelope container 1 and the circumferential surface of the metal plate 2. A product of the present invention filled with an adhesive coating layer consisting of 3c can be obtained quickly and easily (FIG. 6). In the drawings, when the lid 1b is provided with an engaging protrusion 1b' that bites into and engages the adhesive layer 3 at its lower part, the adhesion between the two can be improved.

The metal plate 2 can be replaced with any other metal plate such as copper, brass, stainless steel, or iron, in addition to being made of aluminum. Further, a transparent filler such as a suitable transparent synthetic resin may be interposed between the upper surface of the adhesive enveloping layer 3 and the lid 2.

Furthermore, when the display metal plate has a display on both sides, it goes without saying that the adhesive on the back side and the lower container should be made of a transparent material. Furthermore, the product of the present invention can be manufactured by the following method in order to ensure that the adhesive is tightly packed in the hard envelope container without any trace of air remaining inside the container. preferable.

That is, FIGS. 7 and 8 show examples thereof,
As the lower container 1a, small holes 6,
A double-sided adhesive sheet 4 is attached to the inner bottom surface of the container 1a, and a display metal plate 2 is attached to the upper surface of the container 1a via the adhesive layer 3a. A lid 1b is applied and its periphery is attached to the lower container 1.
After forming a hard enveloping container 1 by airtightly bonding 1c to the upper periphery of the upper part a with adhesive or heat melting, the enveloping container 1 is positioned above and below the small holes 6, 6 as shown in FIG. Hold it in an upright position and open its lower small hole 6.
is used as the injection hole to inject the adhesive through the injection pipe 7. During this time, the air inside the container 1 is exhausted from the upper small hole 6 as it is injected, until the internal space is completely filled with the adhesive. Let's do it. In this case, preferably, if the above-mentioned gelatinous adhesive is injected, it will gel after injection, so that even if the injection tube 7 is removed, the adhesive inside will not flow in and a good filling state can be maintained inside. maintain. Next, these small holes 6, 6 are closed with a suitable sealant such as a curable resin (not shown). In this way, a combined product is obtained which has a well-tightly packed adhesive encapsulation layer with no residual air inside.

(Effects of the Invention) According to the present invention, a display metal plate is placed inside a hard envelope container with at least a transparent front wall, and at least the front side of the display metal plate is interposed between the metal plate and the container. Since the combined display product is made of a transparent adhesive coated product, even if the metal plate expands or contracts due to changes in the environmental temperature during use, the outer periphery of the metal plate will not be covered. The enveloping adhesive enveloping layer absorbs the expansion and allows the contraction, so the rigid enveloping container is not deformed or cracked by being pressed from the inside by the expansion, and can withstand changes in temperature. It is stable against
In addition, due to its adhesiveness, the display metal plate is fixedly held in a predetermined position, and a combined display product can be provided satisfactorily. It has the effect of eliminating inconveniences such as peeling from the body, deformation of hard synthetic resin containers due to expansion of metal plates, and cracks.
In addition, in the manufacturing method, an adhesive is injected into a lower container, a display metal plate housed in the lower container is adhered to the center surface of the adhesive layer, and an adhesive is applied to the circumferential side and upper surface of the metal plate for display. Since the air inside the lower container can be expelled to the outside, the upper surface of the lower container is then airtightly sealed with a lid to form a hard envelope container.
It is possible to obtain a high-quality combined display product in which the display metal plate is held at a predetermined position in the container by the adhesive covering layer from its entire circumference. In this case, the display metal plate is adhesively fixed to a predetermined position on the inner bottom surface of the lower container via a pressure-sensitive double-sided adhesive sheet, which has the effect of improving production efficiency.

Furthermore, as the manufacturing method of the present invention, a metal plate for display is pasted on the inner bottom surface of the lower container through an adhesive layer in the central area thereof, and a lid is applied to create a hard envelope container. One side to inject the transparent adhesive liquid inside,
When the air inside the container is removed by suction, it is possible to reliably obtain an integrated display product filled with a high-quality adhesive enveloping layer in which no air remains inside.

[Brief explanation of drawings]

Fig. 1 is a top view of an example of the product of the present invention, Fig. 2 is a sectional view thereof, Fig. 3 is a sectional view of a modified example, and Figs. 4 to 6 show an example of the manufacturing method of the present invention. , FIG. 4 is a cross-sectional view of the stage of housing and fixing the display metal plate;
FIG. 5 is an enlarged sectional view of a part thereof, FIG. 6 is a sectional view of the final product, and FIGS. 7 and 8 show modified examples of the manufacturing method. 1...Hard envelope container, 1a...Lower container, 1b
... Lid, 1c ... Airtight binding, 2 ... Metal plate for display, 3 ... Adhesive enveloping layer, 3a ... Lower coating layer,
3b...peripheral coating layer, 3c...upper coating layer, 4...
...Double-sided adhesive sheet material, 6,6...Small hole.

Claims (1)

[Claims] 1. A display metal plate is placed in a hard envelope container with at least a transparent front wall, and a display metal plate is interposed between the metal plate and the container, and at least the front side of the metal plate is covered with a transparent layer. An integrated product for display, which is housed in a state of being covered with an adhesive covering layer. 2. A lower coating layer of an adhesive is formed on the inner bottom surface of the lower hard container wall, and then a metal plate for display is placed on the upper surface of the lower coating layer, and a space is left between the peripheral side of the metal plate and the inner peripheral side surface of the container. Then, a transparent adhesive is injected into the space on the circumferential side and the upper surface of the metal plate to fill the upper covering surface along the circumferential side, and then a transparent hard lid is placed on the upper surface. A method for producing a combined product for display, characterized in that the abutting portion of the lid and the lower container wall is airtightly bonded by adhesive or heat melting to form a hard enveloped container. 3. A double-sided pressure-sensitive adhesive sheet material is attached to the inner bottom surface of the lower rigid container wall, and then a display metal plate is attached to the pressure-sensitive adhesive layer surface on the upper surface of the sheet material, on the circumferential side thereof and on the inner circumferential side surface of the container. Then, a transparent adhesive is injected into the space on the circumferential side of the metal plate as well as on the top surface, and an upper coating layer is filled and formed on the circumferential side. A combined product for display, characterized in that a transparent hard lid is applied to the upper surface of the lid, and the abutting part of the lid and the lower container wall is airtightly bonded by adhesive or heat melting to form a hard envelope container. Manufacturing method. 4. A display metal plate is attached to the inner bottom surface of the lower hard container wall via an adhesive layer, leaving a space between the peripheral side thereof and the inner peripheral surface of the container, and then a transparent hard lid is attached. After airtightly binding to form a hard encapsulating container, a transparent adhesive is injected through an injection hole provided in the wall of the hard container, while the air inside is exhausted through an exhaust hole, and the encapsulating container is sealed. A method for manufacturing a combined product for display, characterized in that the space inside the container is filled with an adhesive. 5. The manufacturing method according to any one of claims 2 to 4, wherein the transparent adhesive to be filled is a curable silicone resin that is initially liquid but then hardens to become a gel adhesive.