JP2805834B2 - Laminated sheet for packaging - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a patterned laminated sheet for packaging.

2. Description of the Related Art Conventionally, a packaging laminate sheet in which the upper surface of a base sheet made of paper or the like is laminated with a transparent synthetic resin film, that is, a so-called laminate sheet is known.

Problems to be Solved by the Invention Printing of a pattern, a pattern, etc. on such a laminate sheet is performed on one or both of a base sheet and a transparent synthetic resin film, but as a printing means, at a relatively low cost. Offset printing, gravure printing, flexo printing, and the like that can be performed are often used.

However, in the case of offset printing, gravure printing, flexographic printing, and the like, the thickness of the printing layer is extremely small, and thus the three-dimensional effect and the volume effect are poor visually or tactilely. Of course, in order to give a three-dimensional or volume effect by printing itself, for example, it is possible to perform silk screen printing, but silk screen printing is more expensive than offset printing, gravure printing, flexographic printing, etc. However, it is difficult to adopt it as a printing means for a packaging sheet.

In addition, as long as printing is used, the purpose is to print a large amount of the same printed material from one block, and in order to manufacture a laminate sheet with even a little pattern and pattern, the block itself must be printed. Must be replaced.

Therefore, it is practically impossible to manufacture a laminated sheet having a slightly different pattern by printing.

The present invention has been made in view of such a problem, and has a sense of three-dimensionalness or volume, both visually and tactilely, and has a delicately different pattern one by one. Moreover, it is an object of the present invention to provide a laminated sheet for packaging that can be mass-produced mechanically and that can be manufactured relatively inexpensively.

Means for Solving the Problems In order to achieve the above object, the present invention provides a method for forming a plurality of pattern forming elements on an upper surface of a base sheet at partial and unspecified positions. The upper surface of a base sheet including elements is laminated with a transparent synthetic resin film.

In other words, the present invention provides a method for forming a plurality of pattern-forming elements formed of a thin material such as a synthetic resin film and a metal foil on a base sheet and formed in small pieces such as scaly and fibrous portions at partial and unspecified positions. And an upper layer of the base sheet including the pattern forming element is laminated with a transparent synthetic resin film.

In this specification, the term "transparent" is used in the sense of having transparency, and includes a so-called translucent film, and a transparent synthetic resin film includes a so-called smoke film.

Embodiments Hereinafter, the present invention will be described based on embodiments shown in the drawings.

As shown in FIG. 1, the laminated sheet according to the present invention has a large number of pattern forming elements (2) (2) on the upper surface of a base sheet (1) made of a sheet material such as paper or a synthetic resin sheet.
Are arranged at partial and unspecified positions, and the upper surface of the base sheet (1) including the pattern forming elements (2) (2)... Is laminated with a transparent synthetic resin film (3). .

The pattern forming element (2) is made of a thin material such as a synthetic resin film or a metal foil, and is formed into a small piece such as a scale, a string, or a fiber. The material of the thin material forming the pattern forming element (2) is not limited to a synthetic resin film or a metal foil, but may be a natural fiber or a synthetic fiber itself. Is a synthetic resin film (a so-called aurora film, a metal foil such as an aluminum foil, etc.) whose color changes depending on the viewing direction by irregularly reflecting light. By forming such a material capable of reflecting light into a scale shape, it is possible to bring out an atmosphere like a raden which is a kind of decoration technique in lacquer crafts.

The thickness of the thin material forming the pattern forming element (2) is arbitrary, but it is not preferable that the thickness is too large with respect to the thickness of the transparent synthetic resin film (3). Pattern forming element (2) for the thickness of the transparent synthetic resin film (3)
When the thickness is too large, as shown in FIG. 2, a gap (4) generated between the base sheet (1) and the transparent synthetic resin film (3) at the periphery of the pattern forming element (2). Is further increased, and the transparent synthetic resin film (3) is easily torn from the void. Also, the size of the pattern forming element (2) is not particularly limited. However, as the size increases, the space (4) at the periphery thereof becomes longer, and the transparent synthetic resin film is easily torn. It is preferable that the target is small.

By the way, in the laminated sheet for packaging of the illustrated embodiment,
The thin material forming the pattern forming element (2) has a thickness of 8 μm, while the transparent synthetic resin film (3) has a thickness of 15 μm.
m, and the pattern forming element (2) is formed in a scale-like small piece of 0.5 mm to 1.4 mm square.

Thus, as shown in FIG. 3, for example, as shown in FIG. 3, a transparent synthetic resin film (3) is attached to the base sheet (1) in the conventional laminate sheet manufacturing process. Before being attached, a number of pattern forming elements (2) (2) are manufactured by being placed on the upper surface of the base sheet (1). That is, the base sheet (1) sucked one by one into the feeder (F)
(1) are sequentially sent to a press roll (P), and are laminated with a transparent synthetic resin film (3) coated with an adhesive on the back surface. Is provided with a pattern forming element dispersing device (M) for dispersing and placing a large number of pattern forming elements (2) (2)... On the base sheet (1).

As shown in FIG. 4, the pattern forming element dispersing device (M) has an opening for sieving out the pattern forming elements (2) (2), that is, a wire mesh having an opening of about 1 mm as a sieve. N), and a large number of pattern forming elements (2), (2)... Are stacked on the wire mesh (N). Then, by vibrating the pattern forming element dispersing device (M) lightly up and down, etc., the base sheet (1) transferred just below the pattern forming elements (2) (2). An appropriate amount of the pattern forming elements (2), (2),... Is sifted on the upper surface, and is scattered and placed at a partial and unspecified position. Thereafter, the transparent synthetic resin film (3) is laminated by pressure bonding on the upper surface including the pattern forming elements (2) (2)... Of the base sheet (1) transferred to the press roll (P). Thus, the desired laminated sheet for packaging is obtained.

Effect of the invention As described above, the laminated sheet for packaging according to the present invention,
On the base sheet (1), a large number of pattern forming elements (2) (2), which are formed of thin materials such as synthetic resin films and metal foils and are formed into small pieces such as scales and fibers, are partially Because it is placed at a specific and unspecified position, it gives a three-dimensional feeling or a sense of volume visually and tactilely,
By changing the arrangement of the pattern-forming elements (2), (2)..., It is possible to provide an interesting packaging laminated sheet in which the patterns are slightly different one by one.

In addition, the placement of the pattern forming elements (2) (2) at partial and unspecified positions can be easily performed during the manufacturing process of the conventional laminate sheet, which impairs the productivity of the conventional laminate sheet. This makes it possible to mechanically mass-produce without the need for such a method, and to provide the above-described interesting laminated sheet for packaging at a relatively low cost.

Moreover, since the upper surface of the base sheet (1) including the pattern forming elements (2) (2) is laminated with the transparent synthetic resin film (3), the pattern forming elements (2) (2).
Have the advantage that there is no danger of peeling off from the base sheet (1) and the durability is excellent.

[Brief description of the drawings]

BRIEF DESCRIPTION OF THE DRAWINGS The drawings show an embodiment of the present invention. FIG. 1 is a partially cutaway perspective view of a laminated sheet for packaging according to the present invention, FIG. 2 is a longitudinal sectional view of the same, and FIG. FIG. 4 is a perspective view of the pattern forming element spraying apparatus. (1) ... substrate sheet, (2) ... pattern forming element,
(3) ... transparent synthetic resin film, (4) ... voids,
(F) ... feeder, (M) ... pattern forming element spraying device, (N) ... wire mesh, (P) ... press roll.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B32B 15/02 B32B 33/00 B65D 65/40

Claims (1)

(57) [Claims] 1. A large number of pattern-forming elements made of a thin material such as a synthetic resin film or a metal foil and formed in small pieces such as scales and fibers are partially and unspecified on a base sheet. A laminated sheet for packaging, comprising a substrate sheet placed thereon and including the pattern forming element, the upper surface of which is laminated with a transparent synthetic resin film.