JPH048226B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a laminator attached to a gravure printing machine. Specifically, the present invention relates to a laminator attached to a gravure printing machine, and more specifically, a laminating material such as a plastic film is applied to a printing film printed by a gravure printing machine using a solvent-free adhesive. This is related to the laminator that is used to attach the materials.

Conventionally, a film printed by a single-roll multicolor gravure printing machine was wound up, and then this rolled up printed film was wound up in the next step and a laminate material was attached.

Since printing and lamination are performed in separate processes in this way, the installation area of the printing machine and laminator becomes large, and a large number of workers are required to manage each process.

Furthermore, semi-finished products that were only printed were generated during the manufacturing process, and there were problems with their management and storage.

If this printing process and lamination process are combined, it is possible to produce a one-step printed laminate film, but the tension during film printing and the tension during lamination must be performed under different conditions. , it is impossible to laminate the printed film at the laminate section with the same tension.

Therefore, it is necessary to adjust the tension between the printing process and the laminating process, and this adjustment has been difficult and has not been put to practical use until now.

The present invention is a laminator attached to a printing machine that allows adjustment of film tension between the printing process and the laminating process.

In detail, we developed a printing machine that uses four dancer rolls and controls each nip roll based on the tension detected by these dancer rolls, allowing the tension of the substrate to be lowered and stabilized during lamination, from the printing state. It has an attached laminator.

The present invention will be described in detail below with reference to the drawings.

Printed by a printing machine 1 as shown in FIG.
After passing through the outfeed section 3, the adhesive applicator 4
The base material 2 to which adhesive is applied through the process and the adherend material 6 fed out from the adherend supply section 5 are passed through a laminating section 7 consisting of a pair of laminating rolls rotating in opposite directions to laminate them. In the laminator, an adhesive applicator and a laminating unit 7 are provided between the printing press 1 and the outfeed unit 3, between the outfeed unit 3 and the adhesive applicator 4, and between the outfeed unit 3 and the adhesive applicator 4.
Dancer rolls 9, 10, 11, and 12 are provided between the adhesive supply section 5 and the laminating section 7, and the tension is detected by the dancer rolls 9, 10, 11, and 12, and the outfeed section 3 and the adhesive supply section 7 are connected to each other. This is a laminator attached to a printing machine in which the circumferential speeds of the rolls in the section 4, the adherend supply section 5, and the laminating section 7 can be automatically controlled.

Here, the outfeed section 3 consists of three rolls, and urges the base material 2 printed on the center in a direction of tension, and detects the tension of the base material 2 passing through the outfeed section 3 via the dancer roll 9. , by controlling the DC motor 31, the Nipprol 32
The circumferential speed is automatically controlled.

That is, as shown in FIG.
When the nip roll 32 moves from the neutral position in the direction A in the figure, the circumferential speed of the nip roll 32 increases, and conversely, when the nip roll 32 moves from the neutral position in the B direction, the circumferential speed of the nip roll 32 slows down.

The adhesive applicator 4 uses a four-roll coating method to pass the base material 2 between a back-up roll 41 and a nip roll 42 and apply the adhesive stored between a pick-up roll 43 and a metal roll 44 to the nip roll 42. It is made to transfer and coat one side of the base material 2.

The adhesive used is a solvent-free adhesive, such as a two-component adhesive consisting of a base agent and a curing agent.

Similarly to the outfeed section 3, a DC motor 45 is controlled by the tension detected via the dancer roll 10, and the circumferential speed of the nip roll 42 is automatically controlled.

The adherend supply section 5 controls a DC motor 51 based on the tension detected via the dancer roll 11, and automatically controls the circumferential speed of the supply roll 52.

The laminate section 7 consists of a pair of rolls 71 and 72 that rotate in opposite directions, and includes a dancer roll 12.
The DC motor 73 is controlled by the tension detected through the roller 72, and the circumferential speed of the roll 72 is automatically controlled.

The above-mentioned control methods using the dancer rolls in the adhesive supply device, the adherend supply section, and the laminating section are performed in the same manner as the control in the outfeed section shown in FIG.

Next, regarding the tension control method of the laminator of the present invention, the line reference signal from the printing cylinder is input to the nip rolls 32, 42, 72 and the supply roll 52, and after the line reference signals are combined, the tension setting of each part is performed. Signals from the dancer roll are input to and controlled by the four rolls. In this way, the high tension during printing can be reduced to the low and stable tension during lamination, making it possible to produce with an integrated system from printing to lamination.

Further, it goes without saying that the laminator of the present invention can be used in the same way as a conventional laminator without being passed through a printing machine.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram showing an outline of the laminator of the present invention, and FIG. 2 is an explanatory diagram of the operation of a dancer roll in an outfeed section. DESCRIPTION OF SYMBOLS 1... Printing machine, 2... Base material, 3... Outfeed part, 4... Adhesive application device, 5... Adherent supply part, 6... Adherent material, 7... Lamination part, 9,
10, 11, 12... Dancer role, 32, 4
2,72...Nippro roll, 52...Supply roll.

Claims (1)

[Claims] 1 A pair of substrates that are printed by a printing machine, pass through an outfeed section, and are coated with adhesive via an adhesive applicator, and an adherend that is fed out from an adherend supply section and rotate in opposite directions to each other. In the laminator, the laminator is configured to laminate through a laminate section consisting of a laminate roll, between the printing machine and the outfeed section, between the outfeed section and the adhesive applicator, between the adhesive applicator and the laminate section, and at the adherend supply section. A dancer roll is provided between the outfeed part and the laminate part, and the tension is detected by the dancer roll.
A laminator attached to a printing machine that can automatically control the circumferential speed of the rolls installed in the adhesive supply section, adherend supply section, and lamination section.