JP2583893Y2 - Tertiary curved surface display - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cubic curved display panel, and more particularly, to a cubic curved display panel having a switch display unit and the like integrally provided on a tertiary curved surface.

[0002]

2. Description of the Related Art Conventionally, in the case of a soft letter board for a keyboard, a display panel, a name plate or the like used in electronic equipment, when the display plate is attached to a molded product, if the attachment portion is not flat, a so-called floating is used. Comes out and can not be used, because of this design,
From the point of decoration formation, there are also restrictions.

[0003]

[Problem to be Solved by the Invention] Therefore, when it is necessary to design a secondary curved surface or a cubic curved surface and form a decoration,
Recently, a molding method called in-mold molding has been adopted. However, in the in-mold molding, the minimum number of production lots is large. For example, depending on the product, it is necessary to arrange for more than half a year, and there are difficulties in terms of operability and cost. There is a problem that the cost is almost three times as much as that of a normal molding die, and a positioning device and the like are complicated and expensive. In the case of hot bending, for example, emboss molding has a problem in terms of cost at present. In the case of in-mold molding, the need for a separate switch portion and the disadvantages such as waterproofness are clear.
However, since the resin is thin (70-250 μm), when it is attached to a molded product, irregularities on the molded product are picked up, so that there is a problem that the appearance is lower than that of embossed or in-mold molding. The present invention is intended to solve the above-described problems, and screens for characters, symbols, figures, and the like on the surface.
A double-sided adhesive tape or an adhesive layer is applied to the lower surface of the printed layer of the plastic sheet base material of the desired shape printed and displayed by a printing method or the like, and the outer shape is left slightly larger than the product size, leaving a peripheral portion. The punched sheet base material is pressed and molded into a cubic curved shape in a concave molding frame or integrated, or a plastic sheet or a metal material such as aluminum is integrally attached to the upper or lower surface of the printing layer. It is an object of the present invention to provide a cubic curved surface display panel characterized in that a support member layer is provided and formed.

[0004]

In order to solve the above-mentioned problems, the present inventor and the like have a simple alternative to the conventional in-mold molding and are inexpensive in terms of cost without being restricted by mass production restrictions. We have studied the display board with cubic curved surface processing which can be provided well and arrived at the present invention. In the present invention, the plastic sheet substrate is suitably made of a polyester resin or a polycarbonate resin, and the thickness thereof is preferably 50 μm to 0.35 mm.
The double-sided adhesive tape to be attached to the back surface of the plastic sheet base material preferably has a thickness of 100 to 500 μm, and the adhesive layer deposition treatment preferably has a thickness of 20 to 60 μm. The average thickness is 0.1 to 0.6 mm for a plastic sheet supporting member integrally attached to the upper or lower surface of the printing layer, and 0.1 to 1.0 mm for a metal supporting member such as aluminum. Is appropriate.

[0005]

The cubic curved display board having the above-mentioned structure can eliminate floating and design restrictions when the display board is pasted on a molded product whose pasting portion is not flat. work. Also, when a metal support member such as a plastic sheet or aluminum is integrally attached to the upper surface or the lower surface of the print layer, it is possible to solve the problem that the unevenness of the molded product is conventionally picked up with a thin resin base material and the appearance is impaired. Work on. Further, in the case of resin processing with a thicker plate, heat processing is generally performed. However, depending on cost requirements, it is possible to perform normal cold pressing without the need for heat processing.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a plan view showing one embodiment of a cubic curved surface display panel according to the present invention, and FIG. 2 is an enlarged sectional view taken along line AA of FIG. In FIGS. 1 and 2, a plastic sheet base material 2 is a sheet of a polyester resin material having a thickness of 0.10 mm, a nonwoven fabric as a core material is provided on the back surface, and an adhesive layer is provided on both sides thereof. A double-sided adhesive tape 3 on the outside of which a release paper 7 also made of a polyester-based resin film is layered is formed integrally with the plastic sheet base material 2 so as to be bonded together. Reference numeral 4 denotes a base printing unit, 5 denotes a printing layer, and 6 denotes a character / symbol display unit.

In the cubic curved display panel of the present invention,
First, a base screen is applied to a polyester resin plastic sheet base material 2 by a silk screen printing machine, and after printing, a double-sided adhesive tape 3 is attached from the back surface. In this case, heat resistance is also taken into consideration. A polyester resin film is used for the release paper 7. Next, the sheet base material 2 on which the double-sided adhesive tape 3 is integrally adhered is punched out along a press-cutting line 8 having an outer contour which is slightly larger than a finished product size and has a width of about 2 to 5 mm. After that, the convex molding part is heated to a temperature of 120 to 250 ° C. in advance and is inserted into one concave molding part (not shown) at a predetermined pressure and time for 3 to 20 seconds. 2 is subjected to hot bending press forming, and as shown in FIG. 3, a curved surface form is formed by hot bending by heat forming. After the hot bending press forming, the product in the concave forming portion is taken out, and the press punching line 8 and the product edging line 9 leaving the slightly large peripheral portion are taken out.
The extending portion 10 up to this is cut in accordance with the product size, and in this case, the protrusion of the adhesive on the double-sided adhesive tape 3 can be removed at the same time. Further, a finishing process such as an embossing process is performed. In the case of hot forming, when the drawing depth of the forming is deep, for example, 10 mm or more, it is necessary to finish the drawn end portion unevenly, so that it is necessary to finish it evenly. Must be trimmed.

FIGS. 4 to 6 are enlarged sectional explanatory views showing one embodiment of a cubic curved display panel according to the present invention. In FIG. 4, a printing layer 5 is provided on the back surface of a plastic sheet base material 2 made of a polyester resin material, and a double-sided adhesive tape 3 is layered on the printing layer 5 and a plastic layer is formed on the lower surface thereof. A support member layer 12 on which a sheet 13 is bonded is provided, and a double-sided adhesive tape 3 and a release paper 7 also made of a polyester resin film are layered on the outside thereof, and these are integrally bonded. State is formed. Reference numeral 6 denotes a character / symbol display portion,
The base material 2 has an embossed portion 15 and a transparent window portion 16.
Is provided.

FIG. 5 shows a printed sheet 5 provided on the back surface of a plastic sheet base 2 also made of a polyester resin material, and 6 is a character / symbol display area. A double-sided adhesive tape 3 is layered on the print layer 5 and a thickness of 0.18
A support member layer 12 in which a transparent plastic sheet 11 having a thickness of about 0.6 mm is integrally attached is provided. Further, a double-sided adhesive tape 3 and a release paper 7 also made of a polyester resin film are layered on the outside thereof. In the case of the plastic sheet base material 2 having a relatively small thickness, the strength of the transparent window portion 16 is thereby improved.

In FIG. 6, a transparent plastic sheet 1 is placed on a plastic sheet substrate 2 via a double-sided adhesive tape 3.
1 (thickness: 0.18 to 0.6 mm) is affixed, and an embossed portion 15 and a transparent window 16 are formed. Reference numeral 6 denotes a character / symbol display unit. For this reason, even from the visual recognition of the printing, the plastic layer becomes two layers on the upper surface of the printing and the depth of the printing is evident, the appearance and quality are greatly improved, and the strength of the transparent window 16 can be improved. .

In FIG. 4, a plastic sheet 13 is adopted as the support member layer 12, and in FIGS. 5 and 6, a transparent plastic sheet 11 is adopted. 12 may be provided.

Further, in the configuration in which the support member layer 12 in which the metal material 14 or the like is bonded to the lower surface of the print layer 5 is provided, ordinary cold pressing can be performed. Further, when the sheet base material 2 is pressed in the concave molding frame, the outer shape may be punched out while leaving the peripheral portion slightly larger than the product size, or the outer shape may be punched without leaving the peripheral portion. Furthermore, in the case of the support member layer 12 in which the metal such as aluminum is integrally bonded, either the outer shape is punched out, leaving the peripheral portion slightly larger than the product size, or the shape is punched out without leaving the peripheral portion as necessary. Good.

When the nameplate is used instead of the double-sided adhesive tape 3 or when peel strength is not so required, a peeling operation using an adhesive layer formed by applying an adhesive or the like is provided. A simple configuration can also be used. Further, for example, a glue may be used instead of the double-sided adhesive tape 3 to be layered on the upper surface or the lower surface of the printing layer 5.
Further, at the time of the above-mentioned hot bending press forming, it is also possible to adopt a configuration in which the switch portion can be simultaneously subjected to the convex press forming, and a display plate forming process accompanying the curved surface forming process can be appropriately combined and adopted. . Although the embodiment according to the present invention has been described in detail with reference to the drawings, the specific configuration is not limited to this embodiment, and even if there is a design change within the scope of the present invention, the present invention can be applied to the present invention. included.

[0014]

[Effects of the Invention] The present invention solves the problem that the present invention was configured as described above, so that when a display panel was pasted on a molded product in which the pasting portion was not flat, there was a floating or a constraint on the design. Can be. In addition, there is an effect that a complicated apparatus and mechanism for the molding are not required, and the apparatus can be provided at a low cost because of its simple configuration. In addition, in the configuration of the support member layer in which a plastic sheet or the like is integrally bonded, it is possible to prevent the appearance and quality from picking up irregularities in the molding.
Further, in a configuration in which a support member made of a metal such as aluminum is bonded, normal cold press molding is also possible, which leads to a reduction in processing steps and a reduction in cost.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of the present invention.

FIG. 2 is an enlarged sectional view taken on line AA of FIG. 1 showing one embodiment of the present invention;

FIG. 3 is a perspective view showing a hot-bending form according to the present invention.

FIG. 4 is an enlarged sectional explanatory view showing an embodiment of the present invention.

FIG. 5 is an enlarged sectional explanatory view showing an embodiment of the present invention.

FIG. 6 is an enlarged sectional explanatory view showing an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tertiary curved display board 2 Plastic sheet base material 3 Double-sided adhesive tape 4 Base printing 5 Print layer 6 Character and symbol display part 7 Release paper 8 Press blanking line 9 Product border line 10 Extension part 11 Transparent plastic sheet G 12 Support member layer 13 Plastic sheet 14 Metal material 15 Embossed part 16 Transparent window part

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) G09F 7/18 G09F 7/12

Claims (3)

(57) [Scope of request for utility model registration] 1. A double-sided adhesive tape is attached to the lower surface of a printing layer of a plastic sheet base material having a desired shape on which characters, symbols, figures, etc. are printed and displayed by a screen printing method or the like, or an adhesive layer. A tertiary curved surface formed by press-molding the sheet base material, which has been punched out, leaving a peripheral portion slightly larger than the product dimension, in a concave molding frame, and integrating the same. Board. 2. The cubic curved surface display panel according to claim 1, wherein said sheet substrate is subjected to convex pressing of a switch portion in a concave molding frame. 3. A cubic curved surface display panel, wherein a support member layer in which a metal material such as a plastic sheet or aluminum is integrally adhered is provided on an upper surface or a lower surface of the printing layer, and is formed.