JP2008290829A - Printed film for laminate and its taking-up method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem wherein a printed film to be laminated to a resin sheet, etc. has to be taken up not to generate misalignment. <P>SOLUTION: When patterns and characters are printed on the film 10 for laminate, misalignment preventing printing 24 is performed for a lug region 21 at least on one end side of the film 10. By making the misalignment preventing printing 24 as a guide, the printed film 10 for laminate is taken up. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a laminate film laminated on a resin sheet or the like, and particularly relates to a laminate film on which a pattern, a character, or the like is printed.

Some packaging containers (for example, food storage containers) obtained by forming a resin sheet into a sheet are laminated with a film on which an arbitrary pattern or character is printed on the outer surface or the inner surface. (For example, see Patent Document 1)
The film to be laminated on the packaging container is pre-printed with images and letters on the surface of the film by gravure printing, etc., and the printed film (printed film) is wound up in a roll shape to form a film roll for laminating Be prepared.

By the way, when a pattern or character is printed on a laminating film and the printed film is wound up in a roll shape, winding deviation may occur due to the content of the printed pattern, fluctuation in the winding tension during winding, or the like. is there. That is, the printed film to be wound may be wound while being shifted from side to side in the axial direction of the roll.
When laminating a printed film fed from a film roll that has caused winding slip to a resin sheet, there is a problem that the printed film to be laminated meanders and protrudes from the resin sheet, resulting in film waste.

In addition, when performing so-called fixed position molding in which it is necessary to match a container mold formed with a resin sheet with a pattern printed on a film, there is a problem in that a defective product is generated in which the pattern is displaced.
Design Registration No. 1202837

Due to the technical background described above, there has been a problem that a printed film to be laminated on a resin sheet or the like has to be wound up so as not to cause winding deviation.
The present invention has been made to solve the above-described problems, and provides a method for winding a printed film in a roll shape so as not to cause winding deviation, and a printed film that hardly causes winding deviation. Is the main purpose.

  The invention according to claim 1 is a method of printing on a laminating film and winding the printed laminating film in a roll shape, and at least one end of the film at the time of printing a pattern or a character on the laminating film. Winding the printed laminating film, comprising: a step of performing anti-winding printing on the side ear region, and a step of winding the printed laminating film using the anti-winding printing as a guide. It is a taking method.

According to a second aspect of the present invention, the anti-winding printing is printed on at least three virtual straight lines parallel to each other extending in the winding direction, and the predetermined thickness appears intermittently along the winding direction. The method for winding a printed laminate film according to claim 1, wherein the method includes a plurality of line segments having a predetermined length.
According to a third aspect of the present invention, line segments appear to form a pair simultaneously on the virtual lines on both sides of the three virtual lines, and on the virtual lines on both sides on the virtual line in the center. The winding of the printed film for laminate according to claim 1 or 2, wherein the winding deviation prevention printing is performed so that the line segment appears in a position that does not overlap with the line segment in the winding direction. It is a taking method.

According to a fourth aspect of the present invention, when the length of each line segment is L, the line segment on the imaginary straight line on both sides and the line segment on the center imaginary straight line are 0.2 L in the winding direction. It is the winding method of the film for printed laminates in any one of Claims 1-3 characterized by having the above space | interval.
The invention according to claim 5 is characterized in that when the thickness of each line segment is T, the interval between the paired line segments appearing on the imaginary straight line on both sides is 1.5T or more. It is a winding method of the film for printed laminates in any one of 1-4.

  A sixth aspect of the present invention is a film for laminating, wherein the anti-winding printing according to any one of the first to fifth aspects is applied.

  According to the first aspect of the present invention, when the desired film or character is printed, the laminating film is separately provided in the ear region (the end region at both ends in the width direction of the film). On the other hand, anti-winding printing is performed. Since the thickness of the ink layer of the pattern or character is added to the laminating film on which the pattern or character or the like is printed, the film may be unwound depending on the content of the pattern or the like when it is rolled up. For example, when the film to be wound is viewed in the width direction and a pattern is printed only on one side in the width direction, the area on which the pattern is printed becomes thick, and the winding diameter of the film is not uniform. Prone to slippage.

Moreover, when the tension adjustment at the time of film winding is inadequate, the film wound up is easy to produce winding | winding deviation.
Therefore, in the present invention, winding slip prevention printing is performed. The roll-off prevention printing is applied to the ear region on at least one end side of the film, and therefore does not hinder the lamination of the film. This is because the ear region of the film is cut out and not used at the time of laminating, so that the anti-winding printing does not interfere with the laminating or interfere with the original picture or character.

Winding prevention printing functions as a winding guide that prevents the film itself from being wound when the printed laminate film is wound. Therefore, the laminating film to be wound is prevented from being unwound.
That is, when roll-off prevention printing is performed, the thickness of the ink for prevention printing is such that the film is smoothly wound in the winding direction and the film is not shifted in the crossing direction in the winding direction. Since it works as a guide, it is possible to prevent winding slippage.

  As described in claim 2, the winding prevention printing is printed on at least three virtual straight lines parallel to each other, and includes a large number of line segments that appear intermittently along the winding direction. Since the film is wound so that these many line segments are alternately overlapped, it is possible to prevent the film wound in a roll shape from being shifted in the axial direction of the roll.

  As for a large number of line segments printed on three virtual straight lines, as shown in claims 3 and 4, a line segment appears to form a pair on the virtual line on both sides, and on both virtual lines on the center virtual line. By making the line segments appear at positions that do not overlap with the line segments on the virtual line, the film is wound so that the line segments on the three virtual lines are alternately stacked. Thereby, the winding slip of a film can be prevented favorably.

When the length of each line segment is L and the thickness is T, it is preferable that the interval of each line segment as viewed in the winding direction is an interval of (0.2 L) or more. Further, as described in claim 5, it is preferable that an interval of each line segment viewed in a direction orthogonal to the winding direction is (0.5 T / 2) or more.
According to the printed film for laminating according to claim 6, it is possible to provide a laminating film capable of preventing the winding deviation that the film is displaced in the winding axis direction at the time of winding.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a diagram schematically illustrating an example of a mechanism for winding a printed laminate film according to an embodiment of the present invention into a roll.
The laminating film 10 may be produced and output from, for example, the film production machine 1 and supplied to the gravure printing machine 3 by the transport roller 2 or the like. Alternatively, the film is not directly supplied from the film manufacturing machine 1, but the laminating film 10 is fed out from the roll 4 wound in a roll shape, guided to the conveyance roller 2, and supplied to the gravure printing machine 3. It is good also as a structure to be.

In the gravure printing machine 3, the gravure printing mentioned later is performed with respect to the supplied film 10 for lamination. The gravure printing includes an original pattern printing including a desired pattern, characters, numbers, and the like required for the laminating film 10 and an anti-rolling printing performed to prevent winding misalignment.
The printed laminating film 10 that has been subjected to gravure printing is guided in the form of a transport roller 2 and wound in a roll around the circumferential surface of the roll shaft 11 while the tension is adjusted by a tension roller 12 for tension adjustment during winding. Taken.

FIG. 2 is a partial plan view of the laminating film 10, showing a part of the laminating film 10 extending in the winding direction (printing direction) indicated by the arrow A1.
The laminating film 10 has a width (dimension perpendicular to the winding direction A1) W, for example, a dimension of about 630 to 1040 mm. The laminating film 10 is, for example, a transparent body having a thickness of, for example, about 25 μm. The laminating film 10 is made of, for example, polystyrene or polypropylene.

The laminating film 10 is printed with an arbitrary pattern, character, or the like in a region 22 (hereinafter referred to as “main region”) excluding the ear regions 21 on both sides when viewed in the width W direction. The pattern or the like printed on the main region 22 is a pattern or the like necessary for a packaging container formed by a resin sheet on which the laminating film 10 is laminated.
The pattern or the like printed on the main area 22 is applied by the gravure printing machine 3 by gravure printing.

In this embodiment, the gravure printing machine 3 performs an anti-winding print 24 on the edge region 21 that is not originally printed, in addition to printing a pattern or the like on the main region 22.
In this embodiment, the winding slip prevention print 24 is a print as shown in FIG.
Referring to FIG. 3, the winding slip prevention print 24 has a large number of line segments 25, 26 printed on three virtual straight lines L 1, L 2, L 3 extending in parallel to each other in the winding direction A 1 of the laminating film 10. , 27 are included. Each line segment 25, 26, 27 is printed so as to appear intermittently along the winding direction A1 of the laminating film 10.

  Line segments 25 and 27 printed on the virtual straight lines L1 and L3 on both sides are paired and printed so as to appear at the same position when viewed in the winding direction A1 of the laminating film 10. On the other hand, the line segments 25 and 27 appear so that the line segment 26 printed on the central virtual straight line L2 does not overlap with the line segments 25 and 27 when viewed in the winding direction A1 of the laminating film 10. Printed to appear at no position.

  As an example, when the length of each of the line segments 25, 26, and 27 is L, the line segments 25 and 27 and the line segment 26 have an interval S1 of S1 = 0.2L or more when viewed in the winding direction A1. Printed as follows. The thickness T of each line segment 25, 26, 27 is, for example, T = 1.0 mm, and in this case, the interval S2 between the line segments 25 and 27 is S2 = 1.5 mm or more. That is, the interval S2 between the line segments 25 and 27 is set so as to satisfy the relationship of S2 ≧ 1.5T with respect to the thickness T of each line segment.

By configuring the anti-winding print 24 to include the line segments 25, 26, and 27 having the above-described relationship, the line segments 25 that form pairs on both sides are formed depending on the thickness of the ink representing each line segment 25, 26, and 27. 27, the central line segment 26 is wound so as to be accommodated, and the laminating film 10 is wound in a roll shape without causing winding deviation.
More specifically, as shown in FIG. 4, in the printed laminating film 10 wound up in a roll shape, in the winding part of the ear region 21, a pair is formed as shown in the enlarged view of the A part. The line segments 25 and 27 on both sides are stacked, and the line segment 26 is stacked so as not to overlap the line segments 25 and 27, and the thickness of the ink representing the line segments 25, 26, and 27 is This prevents the wound laminating film 10 from shifting in the roll axis direction. That is, the printed laminating film 10 is satisfactorily wound so as not to be displaced in the roll axis direction using the anti-winding print 24 as a guide.

In the embodiment of the present invention, the example in which the anti-winding print 24 is applied to the ear regions 21 existing on both sides in the width W direction of the laminating film 10 has been described.
However, the winding prevention print 24 may be applied only to one of the ear regions 21 without being applied to the ear regions 21 on both sides.
Further, the winding prevention print 24 may be configured to use line segments printed on four or more virtual straight lines instead of line segments printed on the three parallel virtual straight lines L1, L2, and L3. Good.

  Furthermore, the winding prevention printing is not limited to the film ear region (the end portion in the direction intersecting the film length direction) as in the above-described embodiment, When a picture is printed and a blank area exists between the pictures, the anti-winding printing may be performed on the blank area (area where the picture generated in the main area is not printed).

  The present invention is not limited to the above-described embodiment, and various modifications can be made within the scope of the claims.

It is the figure which represented the example of a mechanism for winding up the printed film for lamination concerning one Embodiment of this invention in roll shape. 1 is a partial plan view of a laminating film 10. FIG. FIG. 6 is a diagram illustrating an example of winding slip prevention printing 24. It is a figure for demonstrating the reason that winding slippage is prevented by winding slip prevention printing 24.

Explanation of symbols

10 Laminating film 21 Ear area 22 Main area 24 Winding prevention printing 25, 26, 27 Line segment L1, L2, L3 Virtual straight line

Claims (6)

A method of printing on a laminating film and winding the printed laminating film into a roll,
A step of performing anti-winding printing on the ear region on at least one end side of the film at the time of printing a pattern or characters on the film for laminating;
Winding the printed laminating film using the winding prevention printing as a guide, and a method for winding the printed laminating film.   The winding prevention printing is printed on at least three imaginary straight lines extending in parallel to each other in the winding direction, and has a predetermined thickness and a predetermined length that appear intermittently along the winding direction. The method for winding a printed laminate film according to claim 1, comprising:   Of the three virtual straight lines, a line segment appears on the virtual line on both sides in a pair at the same time, and on the virtual line in the center, the line segment on the virtual line on both sides and the winding direction The method for winding a printed laminate film according to claim 1 or 2, wherein the winding slip prevention printing is performed so that a line segment appears at a position that is shifted and not overlapped.   When the length of each line segment is L, the line segment on the imaginary straight line on both sides and the line segment on the center imaginary straight line have an interval of 0.2 L or more in the winding direction. The winding method of the film for printed laminates in any one of Claims 1-3.   The interval between line segments forming a pair appearing on the imaginary straight line on both sides when the thickness of each line segment is T is 1.5 T or more. Winding method for printed laminate film.   A film for laminating, wherein the winding prevention printing according to any one of claims 1 to 5 is performed.

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