JPH069804A - Sheet-like molding - Google Patents

Abstract

PURPOSE:To obtain a sheet-like molding suitable for exterior case, etc., of VTR tape capable of remarkably expressing difference between the surface of a sheet body and a character and design displaying part by providing a mirror surface-like character and design displaying part by printing at a prescribed position of the sheet body. CONSTITUTION:A synthetic resin melt (e.g. polypropylene) fed continuously in a sheet-like form is rolled by an emboss roll, etc., provided with unevenness for squeeze pattern formation and then cooled and solidified to form a squeeze pattern 2 having roughness satisfying the formulas 3mum<=Rt<=15mum, 3mum<=Rz. D<=15mum and [Rt-Rz.D]<=4mum (Rt is maximum height of roughness curve and Rz.D is ten point average roughness of roughness curve) on at least either one surface among both surfaces la and 1b of a sheet-like body. Then a transparent coating having gloss is applied to an arbitrary position of squeezing surface of the sheet body 1 to provide a mirror surface-like character and design displaying part 3. Thereby, the objective sheet-like molding A remarkable in the difference between the character and design displaying part 3 improved in specular glass and the surface of the sheet body 1 having non-gloss surface can be obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention prints desired characters on desired positions on the outer surface. The present invention relates to a sheet-shaped molded article provided with a design display portion, for example, a sheet-shaped molded article for forming an outer case for VTR tapes, stationery or cosmetics, or a hard case for books.

[0002]

2. Description of the Related Art Conventionally, a sheet-shaped molded product of this type has a trademark name, a quality indication, a book name or a design, etc., which is formed by offset printing at a predetermined position of a sheet body formed of a synthetic resin into a sheet having a desired thickness. Desired character of. It is made by printing the design display part. In order to improve the adhesion of the coating material forming the design display portion, the surface of the sheet body is subjected to a desired drawing treatment, and the sheet-shaped molded product formed as described above is bent and molded into a desired shape. The outer case for VTR tape was formed.

[0003]

However, the above-mentioned characters in the conventional sheet-shaped molded product are. The design display part has a squeeze pattern of the sheet body (base) on its surface and has no gloss, that is, characters. Since the design display part was not a mirror-like one, the characters. The trademark name, quality indication, etc., which is the design display part, was not clearly expressed, especially the color of the seat body and the characters. When the color of the design display part is represented by the same color system, the problem is remarkable, and the functions such as the trademark and the quality display have not been effectively achieved. Also, the desired character can be printed. In addition to this type of sheet-shaped molded product provided with a design display part,
For example, characters are drawn with a squeeze roll that has a gloss difference (mirror surface part and squeezing part). Some designs have a design display on the sheet in a mirror-like shape, but after printing letters, etc., cooling and standard length cuts occur, so the range of synchronization is narrow due to expansion and contraction.
In addition, it is almost impossible to use the same squeeze roll to shrink and warp the product according to the wishes of different users, and the above problems cannot be solved as a practical problem.

The present invention has been made in view of the above problems of the prior art, and an object of the present invention is to print a specular character on a predetermined position of a sheet body by printing. A design display portion is provided, and the surface of the sheet body and the characters. It is an object of the present invention to provide a sheet-shaped molded product that can significantly show the difference from the design display portion.

[0005]

In order to achieve the above-mentioned object, the technical means of the present invention is that a sheet is formed into a squeezing pattern having a roughness satisfying at least one of the inner and outer surfaces of the following formula. The main body is formed, and a glossy transparent paint is applied to an arbitrary position on the squeezing surface of the sheet main body to give a mirror-like character. The design display section is provided. 3 μm ≦ R _t ≦ 15 μm 3 μm ≦ R _z . D ≦ 15 μm and | R _t −R _z . D | ≦ 4 μm R _t ... Maximum height of roughness curve R _z . D: ten-point average roughness of roughness curve

[0006]

EXAMPLE An example of the present invention will be described below.

In the figure, A indicates a sheet-shaped molded product, and the sheet-shaped molded product A is a sheet main body 1 in which an outer surface 1b is formed in a squeeze pattern having a predetermined roughness, and a character provided on the outer surface 1b.
It is composed of the design display part 3 and, for example, a VTR as shown in the figure.
Assemble and form the exterior case B for use. In this embodiment, the VTR outer case B is assembled and formed, but the sheet-shaped molded product A of the present invention is not limited to this.
In addition, an outer case for stationery or cosmetics, a hard case for books, etc. are assembled and formed.

The sheet body 1 is made of a synthetic resin, such as polypropylene, polyethylene, or ethylene vinyl acetate, which is continuously supplied in the form of a sheet, and a predetermined embossing roll (not shown) provided with projections and depressions for forming a drawn pattern. )
According to the conventional method, it is rolled and then cooled and solidified to form the outer surface 1b of the sheet body 1 into a drawn pattern 2 having a surface roughness satisfying the following formula. 3 μm ≦ R _t ≦ 15 μm 3 μm ≦ R _z . D ≦ 15 μm | R _t −R _z . D | ≦ 4 μm R _t ... Maximum height of roughness curve R _z . D: ten-point average roughness of roughness curve

Table 1 shows the surface roughness. By Tokyo Seimitsu Co., Ltd. surface roughness profile measuring instrument "Surfcom".

[0010]

[Table 1]

As the surface roughness, R _t , R _z . D is 15
If it exceeds 3 μm, the color developability of the ink is inferior, and if it is less than 3 μm, the ink adhesion varies. It is preferably 3 μm to 12 μm. R _t , R _z . The difference in D indicates the uniformity of the surface roughness, and the more uniform it is, the better the ink spreadability and ink adhesion are. The absolute value of the difference is 4 μm or less. preferable.

The seat body 1 has inner and outer surfaces 1a, 1
At least one of the surfaces b may be the drawing surface (both the inner surface 1a and the outer surface 1b may be the drawing surface), and the roughness of the drawing pattern 2 satisfies the above formula. It can be arbitrarily changed as long as it is within the range, and the diaphragm shape is also a conventionally known concavo-convex shape. The sheet body 1 may be transparent, semi-transparent or opaque.

Character. The design display section 3 is the seat body 1
A desired glossy transparent paint, for example, a well-known UV-curable paint (such as Seika Beam 2937 manufactured by Dainichiseika Seika) is applied on a predetermined portion (on a predetermined squeezed portion) of the outer surface 1b of the above by a well-known technique. As a result of the work, the roughness of the squeeze pattern becomes smooth, and a desired trademark name, quality indication, or desired pattern is formed on the surface of the sheet body 1 in a mirror-like shape.

Explaining a concrete example, a pair of embossing rolls (not shown) provided with a polypropylene melt 1'which is continuously supplied in a sheet form and having irregularities for forming a drawing pattern 2 on the surface of one embossing roll. ) And cooled to solidify to form an outer surface 1b with R _t 9 μm, R _z . A sheet body 1 formed into a squeezing pattern 2 having a D5 μm roughness is obtained, and then an ultraviolet curable coating material (Seika Beam 2937 manufactured by Dainichiseika Seika) is applied to a predetermined portion of the sheet body 1, that is, a location where a trademark or the like is provided.
RI tester or silk screen printing to print desired characters. As a result of providing the design display portion 3 in a mirror-like shape, the roughness of the squeeze pattern becomes smooth and the above-mentioned character. The specular gloss of the design display part 3 is improved, and the sheet main body 1 and the letters. The difference from the design display portion 3 was remarkable.

Then, the sheet-shaped molded product A formed as described above.
When the desired outer case B for VTR is obtained by a conventionally known method, such as punching out into a desired shape and assembling and forming,
Characters such as trademarks are displayed on the surface of the case B at predetermined locations. The design display portion 3 clearly appeared, which was very preferable in distinguishing it from other products.

[0016]

According to the present invention, at least either one of the inner and outer surfaces is 3 μm ≦ R _t ≦ 15 μm 3 μm ≦ R _z . D ≦ 15 μm and | R _t −R _z . D | ≦ 4 μm R _t ... Maximum height of roughness curve R _z . D ... A sheet body is formed in a diaphragm pattern having a roughness that satisfies the ten-point average roughness of the roughness curve, and a glossy transparent paint is applied to an arbitrary position on the sheet body so as to form a mirror-like character. ． Since it is a sheet-shaped molded product with a design display part, the texture of the squeezed pattern is smooth and the characters. The mirror surface glossiness of the design name such as the trademark name and the quality display is improved, and the difference from the sheet body which is a non-glossy surface is clearly expressed by the squeeze pattern, even if the color of the sheet body and the characters. Even when the color of the design display portion is represented by the same color system, the difference becomes clear.

In addition, the sheet-shaped molded product of the present invention has the above-mentioned structure, so that it can be printed on a desired position of the diaphragm sheet by printing a mirror-like character. It is possible to provide a design display portion, which is formed by another method, for example, a mirror-like character at the same time as being squeezed by a squeezing roll having a gloss difference (mirror surface portion and squeezing portion). Since no design display part is provided, the same squeezing rolls cannot be used in order to limit the synchronizable range, and to accommodate contraction and warpage that are desired by different users, different squeezing rolls can be used. The above effect can be easily obtained without causing inconveniences such as necessity.

Therefore, if a predetermined product, such as an outer case for VTR or an outer case for cosmetics, is formed from the sheet-shaped molded product of the present invention, the characters on the surface of the case are marked. It is possible to provide a product with a very good commercial value that clearly shows the trademark name, quality display, etc., which is the design display part, and can be effectively distinguished from other products and have a clear quality display.

[Brief description of drawings]

FIG. 1 is a process drawing showing an example of the sheet-shaped molded product of the present invention.

FIG. 2 is a vertical sectional side view showing an enlarged main part.

[Explanation of symbols]

 A: Sheet-shaped molded product 1: Sheet body 1a: Inner surface 1b: Outer surface 2: Stroke pattern 3: Characters. Design display section B: Exterior case for VTR

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁵ Identification code Internal reference number FI Technical display location G09F 3/02 C 7028-5G B29L 7:00 4F

Claims (1)

[Claims] 1. At least one of the inner and outer surfaces is 3 μm ≦ R _t ≦ 15 μm 3 μm ≦ R _z . D ≦ 15 μm and | R _t −R _z . D | ≦ 4 μm R _t ... Maximum height of roughness curve R _z . D ... A sheet body is formed in a diaphragm pattern having a roughness that satisfies the ten-point average roughness of the roughness curve, and a glossy transparent paint is applied to an arbitrary position on the sheet body so as to form a mirror-like character. ． A sheet-shaped molded product having a design display portion.