JP3187530B2 - Sheet-like molded product - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for printing a desired character on a desired position on an outer surface by printing. The present invention relates to a sheet-like molded product provided with a design display portion, for example, a sheet-like molded product for forming an outer case for VTR tape, stationery or cosmetics, or a hard case for books and the like.

[0002]

2. Description of the Related Art Conventionally, this type of sheet-like molded product is provided with a trade name, a quality indication, a book name, a design, or the like by offset printing or the like at a predetermined position of a sheet body formed into a sheet having a desired thickness by a synthetic resin. The desired character for. Printed design display area. The surface of the sheet body is subjected to a desired squeezing process in order to improve the adhesion of the paint for forming the design display portion. An outer case for VTR tape was formed.

[0003]

However, the above character in conventional sheet-like molded articles. In the design display portion, the squeezed pattern of the sheet body (base) appears on the surface and is not glossy, that is, the character. Since the design display part was not mirror-like, the characters The trademark name, quality indication, etc., which are the design indicator, were not clearly expressed. When the color of the design display portion 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. In addition, desired characters can be printed. In addition to this type of sheet-shaped molded product provided with a design display section,
For example, characters are drawn by a squeezing roll provided with a gloss difference (mirror portion and squeezed portion). There is a case where the design display part is provided on the sheet in a mirror-like shape, but after marking characters etc., it goes through cooling and fixed size cut, so the tuning range is narrow due to the effect of expansion and contraction,
Further, it is almost impossible to fit the product into shrinkage and warpage desired by different users using the same squeezing roll, and it has not been possible to solve the above problem as a practical problem.

The present invention has been made in view of the above-mentioned problems of the prior art, and an object of the present invention is to provide a mirror-like character by printing on a predetermined position of a sheet body. It is provided with a design display portion, and the surface of the sheet body and the characters. An object of the present invention is to provide a sheet-like molded product that can remarkably express a difference from a design display portion.

[0005]

In order to achieve the above-mentioned object, the present invention provides a technical means in which at least one of both inner and outer surfaces is formed into a drawn pattern having a roughness satisfying the following formula. A main body is formed, and a glossy transparent paint is applied to an arbitrary position of the squeezing surface of the sheet main body to form a mirror-like character. That is, a 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]

An embodiment of the present invention will be described below.

In the figure, A shows a sheet-like molded product. The sheet-like molded product A has a sheet main body 1 having an outer surface 1b formed in a drawn pattern having a predetermined roughness, and a character .A provided on the outer surface 1b.
It is composed of a design display section 3 and, for example, a VTR as shown in the figure.
The outer case B for use is assembled and molded. In this embodiment, a case is described in which the outer case B for a VTR is assembled and formed. However, the sheet-shaped molded product A of the present invention is not limited to this.
In addition, an outer case for stationery or cosmetics or a hard case for books is assembled and formed.

The sheet body 1 is made of a synthetic resin, such as polypropylene, polyethylene, ethylene vinyl acetate, or the like, which is continuously supplied in the form of a sheet, and is made of a predetermined embossing roll (not shown) provided with irregularities for forming a drawn pattern. )
After being rolled as is well known in the art, the sheet is 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 mathematical 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. Based on "Surfcom", a surface roughness profile measuring instrument manufactured by Tokyo Seimitsu Co., Ltd.

[0010]

[Table 1]

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

The seat body 1 has inner and outer surfaces 1a, 1a.
It is sufficient that at least one of the surfaces b is a squeezed surface (the inner surface 1a and the outer surface 1b may be squeezed surfaces, of course), and the roughness of the squeezed pattern 2 satisfies the above formula. It can be changed arbitrarily as long as it is within the range described above, and the constricted shape is also a conventionally known uneven shape. The sheet body 1 may be transparent, translucent, or opaque.

Character. The design display section 3 is provided on the sheet body 1.
A desired glossy transparent paint, for example, a known UV-curable paint (such as Seika Beam 2937 manufactured by Dainichi Seika Co., Ltd.) is applied in a desired amount on a predetermined portion (on a predetermined squeezed portion) of the outer surface 1b of the base material by a conventionally known technique. As a result, the roughness of the squeezed pattern becomes smooth, and a desired brand name, quality indication, or the like, or a desired design, etc., is formed in a mirror-like shape on the surface of the sheet body 1.

A specific example will be described. A melt 1 'of polypropylene continuously supplied in a sheet form is used to form a pair of embossing rolls (not shown) having irregularities forming a drawing pattern 2 on one embossing roll surface. ), And is cooled and solidified to obtain an outer surface 1b of R _t 9 μm, R _z . A sheet body 1 formed in a drawn pattern 2 having a roughness of D5 μm is obtained, and then an ultraviolet curable paint (Seika Beam 2937 manufactured by Dainichi Seika) is applied to a predetermined portion of the sheet body 1, that is, a place where a trademark or the like is provided.
Desired characters printed by RI tester or silk screen method. As a result of providing the design display portion 3 in a mirror-like shape, the roughness of the drawn pattern becomes smooth, and The specular glossiness of the design display section 3 is improved, and the sheet main body 1 and the characters. The difference from the design display part 3 was remarkable.

Then, the formed sheet-like molded product A
When a desired VTR outer case B is obtained by a conventionally known method, such as by punching into a desired shape and assembling and forming,
A letter such as a trademark is placed at a predetermined location on the surface of case B The design display portion 3 clearly appeared, which was very preferable in distinguishing from other commodities.

[0016]

According to the present invention, at least one of the inner and outer surfaces has a thickness of 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 squeezed pattern that satisfies the ten-point average roughness of the roughness curve, and a glossy transparent paint is applied to an arbitrary position on the squeezed surface of the sheet body to obtain a mirror-like character. . Since it is a sheet-shaped molded product provided with a design display part, the roughness of the drawn pattern becomes smooth and the character The specular glossiness of the design display, such as the trademark name and quality indication, is improved, and the difference from the sheet body, which has a non-glossy surface by the drawn pattern, is clearly expressed. Even when the color of the design display section is represented by the same color system, the difference becomes clear.

Further, the sheet-like molded product of the present invention has the above-mentioned structure, and thus, by printing it at an arbitrary position on the squeezed sheet, a mirror-like character can be formed. It is now possible to provide a design display portion, and it is formed by another method, for example, a mirror-shaped character simultaneously with squeezing by a squeezing roll provided with a gloss difference (mirror portion and squeezed portion). Since there is no design indicator, it is not possible to use the same squeezing roll to restrict the tunable range, and to reduce or warp to the shrinkage or warpage of different users. The above effects can be easily obtained without causing any inconvenience such as the necessity.

Therefore, when a predetermined product, for example, an outer case for a VTR or an outer case for a cosmetic is formed by the sheet-like molded product of the present invention, a letter or the like is formed on the surface of the case. It is possible to provide a product with a very high commercial value, in which the name of the trademark or the quality indication, etc., which is the design indication part, is clearly displayed, and the product can be distinguished from other products, the quality indication, etc. can be effectively achieved.

[Brief description of the drawings]

FIG. 1 is a process chart showing one embodiment of a sheet-like molded product of the present invention.

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

[Explanation of symbols]

 A: Sheet-like molded article 1: Sheet body 1a: Inner surface 1b: Outer surface 2: Squeezed pattern 3: Letter. Design display section B: VTR outer case

Claims (1)

(57) [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 squeezed pattern that satisfies the ten-point average roughness of the roughness curve, and a glossy transparent paint is applied to an arbitrary position on the squeezed surface of the sheet body to obtain a mirror-like character. . A sheet-shaped molded article provided with a design display section.