JPH074918B2 - Water pressure transfer method - Google Patents

Description

The present invention relates to a hydraulic transfer method using a transfer film composed of a water-soluble or water-swellable film.

[Prior Art] In the conventional technology, a transfer film made of a water-soluble or water-swellable film is floated on the water surface so that the transfer layer is the upper surface, and the transfer surface of the transfer target is placed in the water from above the transfer film. In the hydraulic transfer method of pushing in, the transfer film is floated on the water surface one by one, and the transfer objects are pressed one by one to the transfer film, or the transfer film is continuously fed on the water surface, and at the same time, the transfer target is transferred. The surface is fed in a combined direction of the feeding direction of the transfer film and the pushing direction into the water from above, but the transfer film spreads on the water surface, and if the spreading is obstructed, wrinkles occur on the water surface. Therefore, in the case of continuous feeding, the feeding speed on the water surface is made higher than the feeding speed to allow the extension. Then, the horizontal component of the feeding speed of the transfer surface is made equal to the feeding speed of the transfer film.

[Problems to be Solved by the Invention] When each transfer film floats on the water surface, there is little problem because the rate of spread is small, but the transfer operation is not continuous and inefficient.

However, in the case of continuous feeding of the transfer film, the rate of spread is large, and the rate is even higher in transfer during transfer. In such a state, when the transfer film is allowed to spread and the transfer is performed with the horizontal component of the feeding speed of the transfer surface being matched, the transfer pattern is not sharp. In addition, since the feeding speed of the transfer surface becomes faster, the exhaust condition between the transfer surface and the transfer film becomes worse,
Pinholes are likely to occur.

This invention, in continuous feeding of the transfer film, allows transfer of the transfer film while allowing the transfer film to spread, and also keeps the transfer pattern sharp and prevents pinholes from being transferred. Is what you are trying to do.

[Means for Solving Problems] In the present invention, a transfer film made of a water-soluble or water-swellable film is floated on the water surface so that the transfer layer is the upper surface, and the transfer surface of the transfer object is transferred. When the film is pushed into the water from above to perform hydraulic transfer, the transfer film is fed on the water surface, and at the same time, the transfer surface is fed in the composite direction of the transfer film feeding direction and the pushing direction into the water from above. The feeding speed component of the surface to be transferred in the same direction as the feeding direction of the transfer film is slower than the feeding speed of the transfer film.

Embodiment The drawing shows an example of an apparatus for carrying out the method of the present invention.

Water 2 is stored in the transfer tank 1, and guide endless chains 3 and 3 run in parallel along the water surface by rollers 4 and 4, respectively.

Above the transfer tank 1, a transfer endless chain 6 for mounting and conveying the transferred objects 5, 5, ... Is wound around rollers 7, 7, 7, and the running direction of the guide endless chain 3 on the water surface. It is designed to run in the same direction as the above, first descending and then ascending. The transfer endless chain 6 is inclined at an inclination angle θ on the descending side.

Then, an activating device 9 for activating the ink surface of the transfer film 8 made of a water-soluble or water-swellable film and a supply roller 10 for feeding the film 8 onto the water surface are provided.

In order to perform hydraulic transfer with the above-mentioned device, the transfer film 8 is activated through the activation device 9 to activate the ink surface, and is fed onto the water surface by the supply roller 10 with the ink surface facing upward. Then, on the water surface, the endless guide chains 3 and 3 sandwich and feed the transfer film 8 from both side edges.

At the same time, when the transfer endless chain 6 is run, the transferred object 5 attached thereto runs and descends at an inclination angle θ, and the transferred surface pushes the transfer film 8 into the water to transfer it. The ink surface of is pressed against the transferred surface with water pressure.

Then, the transferred surface 5 is transferred onto the transferred surface by the transfer film 8
The ink surface is transferred and rises, and the water-soluble or water-swellable film remains in water.

Transfer film 8 made of water-soluble or water-swellable film
When delivered to the surface, it spreads on the surface.

Therefore, when the feeding speed of the transfer film 8 by the supply roller 10 is Vf, the moving speed Vc of the transfer film 8 on the water surface is Vc> Vf due to the spreading.

Therefore, the speed of the guide endless chains 3 and 3 is set to Vc.

Therefore, a transfer endless chain 6 that conveys the transferred objects 5 and 5
Is Vt, the moving speed component of the surface to be transferred in the horizontal direction is Vt cos θ.

Here, in the method according to the present invention, Vt, Vc, and θ are appropriately selected so that Vtcosθ <Vc.

As an example, θ = 20 ° Vc = 1.2 to 1.4 m / min Vtcos θ = 1.0 to 12 m / min.

By the way, the extension in the width direction is regulated by the guide endless chains on both sides to the extent that inconvenience due to wrinkles does not occur.

[Advantages of the Invention] Since the horizontal moving speed component of the transfer surface is smaller than the moving speed of the transfer film in the horizontal direction, the pattern which is extended and not sharp is not transferred, but is packed and transferred. As a result, the pattern on the transferred surface becomes sharp, and the unevenness for transfer is sufficiently adapted.

In addition, the exhaust is good when the transfer surface and the transfer film are bonded, and pinholes are less likely to occur.

[Brief description of drawings]

The drawing is a longitudinal sectional view of an apparatus for carrying out the hydraulic transfer method according to the present invention. 1 ... Transfer tank, 2 ... Water, 3 ... Guide endless chain, 4
...... Roll, 5 …… Transfer object, 6 …… Transfer endless chain, 7 …… Roller, 8 …… Transfer film, 9 …… Activator, 10 …… Supply roller.

Claims (1)

[Claims] 1. A transfer film made of a water-soluble or water-swellable film is floated on the water surface so that the transfer layer faces upward.
In the hydraulic transfer method in which the transfer surface of the transfer target is pushed into the water from above the transfer film, the transfer film is fed on the water surface, and at the same time, the transfer surface is fed from the transfer film and from above to the water. The method of hydraulic transfer characterized in that the feeding speed component of the surface to be transferred in the same direction as the feeding direction of the transfer film is slower than the feeding speed of the transfer film.