JPH0839670A - Lamination of running film - Google Patents

Abstract

PURPOSE:To laminate a base material such as release paper to a running film of which the surface is coated with printing ink by a simple mechanism utilizing only the untreated surface of the running film while applying tension to the running film without generating wrinkles in the film. CONSTITUTION:In a running film laminating method, a porous plate is arranged to the untreated surface of a running film 6 and the running film 6 is sucked under vacuum through the porous plate 1 to be laminated to a base material 2 while tension is applied to the running film 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for laminating a running film, which is useful for laminating a running film with a base material such as release paper to prevent wrinkling.

[0002]

2. Description of the Related Art Conventionally, in the process of sticking a release paper or the like for protecting the printing surface on a printed running film having a thickness of 50 μm or less, wrinkles are not generated especially on a film containing a metal wire so that the running film will not be wrinkled. In order to prevent the printed surface from breaking and breaking during lamination due to the above, the process is performed while applying an appropriate tension. Printing ink is applied on one side (hereinafter, this side is called the front side, the other side is called the back side,
In order to apply tension to the film so that wrinkles do not occur, the method shown in FIG. 5, for example, has been often used. That is, the pinch roll c is provided above the guide roll b that supports the running film a from the back surface, and the printing ink or the adhesive of the running film a is applied to the pinch roll c by its own weight (or by applying a load thereto). The running film a is pinched by being pressed against the guide roll b over the portions on both ends (the portions on both sides of P) that are not open, and contact resistance is generated by the frictional force. A brake d is provided on the guide roll b to adjust the contact resistance. On the other hand,
When the traveling film a is clamped by the air chuck e and the driving part f is operated to move the air chuck e forward in front of the traveling film a in the traveling direction (the direction of the arrow), tension is applied at the hatched portion in FIG. Occurs. At this time, in order to control the generation of wrinkles, the load of the pinch roll c is adjusted and the contact resistance of the guide roll b is controlled. In addition,
In the figure, g is a release paper, h is its guide roll, and i is a portion where the release paper g is attached to the running film a.

[0003]

However, in this method, it is necessary to provide a portion on the surface of which printing ink is not applied, and there is a restriction that this must be considered from the stage of product design. Further, the brake d as shown in FIG. 5 is required, resulting in an increase in cost. Furthermore, the element that gives tension without generating wrinkles,
1) Diameter of guide roll b and pinch roll c, 2)
The material of the guide roll b and the pinch roll c, 3) the pressing pressure of the pinch roll c, and 4) the strength of the brake were various and complicated. Therefore, the object of the present invention is to provide tension to a running film coated with printing ink on its surface without causing wrinkles by a simple mechanism that uses only the non-treated surface of the running film, such as release paper. A method of laminating with a substrate is provided.

[0004]

The running film laminating method according to the present invention comprises a porous plate disposed on the non-treated surface of the running film, and the running film is vacuum-adsorbed through the porous plate to apply tension. It is characterized by being laminated on a base material while being applied.

1 to 4 illustrating the method of the present invention.
It will be described in detail based on. FIG. 1 is a vertical cross-sectional view showing an example of an apparatus for carrying out the method of the present invention, FIG. 2 is a perspective view of an essential part thereof, and FIG. 3 shows a state of carrying out the method of the present invention using this apparatus. It is a perspective view. In each of the above drawings, 1 is a porous plate, 2 is a supporting frame for supporting the porous plate, 3 is a vacuum box for forming an air reservoir, 4 is a suction blower, 5 is piping, and 6 is a running film. In FIG. 1, when the suction blower 4 is operated, air flows through the porous plate 1 from the vacuum box 3 to the pipe 5 according to the arrow.
In FIG. 3, when the suction blower 4 is operated by placing the device shown in FIG. 1 on the lower surface which is the non-processed side of the running film 6, the running film 6 is evenly adsorbed by the porous plate 1 with the suction of air. It Tension is generated in the shaded area due to contact friction with the porous plate 1, resulting in uniform tension.
Wrinkles disappear.

There are two methods of adjusting the tension: a method of adjusting the vacuum suction force by changing the air volume of the suction blower 4 and a method of adjusting the vacuum suction force by changing the suction area of the porous plate 1. . That is, in the method of the present invention, the tension of the running film 6 can be adjusted only by controlling two factors, that is, the air volume of the suction blower 4 and the adsorption area of the porous plate 1. In any case, the vacuum suction force is 0.6 to 2.0k
gW is preferred. The porous plate 1 having holes with a diameter of about 10 to 15 μm on the entire surface is optimal for adsorption with a uniform force, but instead, a porous plate with a diameter of about 1 mm is drilled on an aluminum plate. It can also be adsorbed uniformly by using a material. As the material of the porous plate 1, a sintered material or a foamed material of an inorganic material such as glass or an organic material such as various plastics can be used, but plastic is suitable because it is light, easy to handle and low in cost. The arrangement of the porous plate 1 with respect to the running film 6 is not limited to the lower side as shown in the figure and may be provided on the upper side as long as it is on the non-treated surface side of the running film 6.

[0007]

EXAMPLE Next, a specific embodiment of the method of the present invention will be described with reference to FIG. FIG. 4 shows a step of attaching a release paper 12 as a base material to a film 11 having only one surface printed. In this case, it is necessary to give tension to both the film 11 and the release paper 12 so that there is no wrinkle or tarmi. In order to give a tension to the release paper 12 as a base material, as shown in the area A, both surfaces of the release paper 12 are alternately applied to the guide rolls 13, 14, 15, 16 to generate the contact resistance. When the drive unit 17 is activated, tension is generated in the shaded area in the figure. On the other hand, film 11 is
Further, when the drive portion 17 is guided through the guide roll 19 onto the porous plate 21 having the vacuum suction means 20 and the vacuum suction is performed, the tension is similarly generated in the shaded portion in the figure. Therefore, the film 11 and the release paper 12 are laminated and laminated in the running state in the laminating unit 22 in a state where there are no wrinkles or tarmi to which tension is applied.

[0008]

As is apparent from the above examples, according to the method of the present invention, the running film can be easily wrinkled simply by applying the porous plate provided with the vacuum suction means to the non-treated surface of the running film. It is possible to give tension in the state without. In addition, since the method of the present invention does not have any relation to the processing side, there are no restrictions when designing a product, and the tension control can be performed in a wrinkle-free state with a simplified overall structure. Furthermore, the method of the present invention can be used as a work stage or the like at the same time as applying tension to the film without wrinkles. For example, if an inspection camera is installed in the area B of FIG. 4, it can be used as an inspection stage for printing.

[Brief description of drawings]

1 is a longitudinal sectional view showing an example of an apparatus for carrying out the method of the present invention.

FIG. 2 is an exploded perspective view of a main part of the apparatus shown in FIG.

3 is a perspective view showing a state in which the method of the present invention is carried out using the apparatus shown in FIG. 1. FIG.

FIG. 4 is a schematic explanatory view showing an apparatus used in Examples.

FIG. 5 is a perspective view showing a conventional method.

[Explanation of symbols]

1, 21 ... Porous plate, 2 ... Support frame, 3 ...
Vacuum box, 4 ... Suction blower, 5 ... Piping, 6 ... Traveling film, 11 ... Film,
12 ... Substrate, 13, 14, 15, 16, 19 ... Guide roll,
17 ... Drive unit, 18 ... Printing machine 20 ... Vacuum suction means
22 ... Laminating section. a ... running film, b ... guide roll, c ... pinch roll, d ... brake,
e ... Air chuck, f ... Drive unit. g ... Release paper,
h ... Guide roll, i ... Laminating section.

Claims (1)

[Claims] Claims: 1. A running film characterized in that a porous plate is arranged on the non-treated surface of the running film, and the running film is vacuum-adsorbed through the porous plate and laminated on a substrate while applying tension. Method of laminating films.