JPS5927711B2 - Card laminating equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a card laminating device, more specifically, a laminating device that laminates a transparent film on one or both sides of cards such as driver's licenses, membership cards, and identification cards (hereinafter simply referred to as "cards"). It is related to.

Various types of laminating apparatuses of this type have been developed and put into practical use.

However, in conventional devices, when the card is sent to the heater section by the transport roller, air enters between the laminated film and the card after passing through the transport roller, and becomes trapped as air bubbles. I had a problem with it. This is because the laminated film and card may be partially separated between the transport roller at the entrance of the laminating device and the heater section behind it, allowing air to enter between them. Due to this phenomenon, air bubbles were trapped between the laminated film and the card at a rate of one in every card. SUMMARY OF THE INVENTION An object of the present invention is to solve these problems and provide a card laminating device that prevents air bubbles from being trapped in laminated cards.

The laminating device according to the present invention is a well-known laminating device that includes a conveying roller, a heater, and a laminating roller arranged in this order, so that when the card passes through the conveying roller, the film and the card are temporarily bonded on the entire surface.
It is characterized in that the conveyance roller is used as a sub-heater for preheating.

In other words, the transport roller is a roller that performs preheating and pressing at the same time as the transport (hereinafter referred to as "preheating and pressing roller"), and when the film and card pass through this roller, they are heated and pressurized to release air. The entire surface is lightly adhered while being extruded, and then air bubbles are not trapped when the adhesive is heated by a heater and then adhered by a laminating roller.Also, Furthermore, in the laminating apparatus according to the preferred embodiment of the present invention, the film and card, which are temporarily bonded on their entire surfaces and sent between the preheating roller and the laminating roller, are prevented from sagging due to heating by the heater and coming into contact with the heater. So that there is no
The rotational speed of the laminating roller is made slightly higher than the rotational speed of the preheated pressure bonding roller, and this preheated pressure bonding roller is heated by the radiant heat of the heater to not only save energy but also to adjust the width of the lamination roller to an appropriate width. It is characterized by being heated.

Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings. The laminating device of the present invention includes a guide plate 1 that guides the feeding of films and cards, and a pair of rollers that are made of an elastic and heat-resistant material such as silicone resin and that rotate while contacting each other. A preheated pressure bonding roller 10 consisting of 11 and 12, a laminating roller 20 consisting of a pair of rollers 21 and 22 having exactly the same structure as the preheated pressure bonding roller 10, and a cartridge heater 31.
, 41 are closely attached with heat conductors 32, 42 made of aluminum, cast metal, etc., and the length is 3 to 4 mm between the preheated pressure roller 10 and the laminating roller 20, which serves as a passage for the card.
a pair of heaters 30 and 40 located above and below, facing each other with an interval of 51 and a holding plate 52 made of a thermal conductor that is placed in contact with the guide plate 51, has a front end 52a locked to the guide plate 51 at both ends, and presses the card from above with its own weight. 50
It is made up of

The four rollers 11, 12, 21, 22 are made by covering metal roller cores 11a, 12a, 21a, 22a with a heat-resistant elastic material such as silicone resin.
1a, 12a, 21a, 22a and metallic rotating shafts 11b, 12b. Each rotates in the direction of the arrow around 21b and 22b.

Each of the rollers 11 and 12 of the preheated pressure bonding roller 10 is rotated by a motor (not shown) through a rotation transmission mechanism of a known structure in opposite directions to each other at the same rotation speed as shown by the arrows. The film and card inserted into the machine are fed to the left in the figure. Laminating roller 20
is purchased in exactly the same way as the preheated pressure bonding roller 10, and is configured to rotate at a slightly higher speed than the preheated pressure bonding roller 10, and the film and card bonded on the plate surface are held between both rollers. This prevents it from sagging due to heating. The first heater 30 is a cartridge heater 31 with a thermal conductor 32 made of a good thermal conductor such as aluminum or cast iron closely attached to the periphery of the cartridge heater 31.
The end of the second preheated pressure bonding roller 10 side forms a recessed portion 33 having a substantially semicircular cross section, and the recessed portion 33 extends over approximately half of the circumference of one roller 11 of the preheated pressure bonding roller 10. They face each other at an interval of 0.5 mm to 1 mm. The second heater 40 has exactly the same structure as the first heater 30, and its recess 43 is connected to the preheated pressure roller 10.
It faces the surface of the other rollers 12 at similar intervals.

The opposing end surfaces 34, 44 of both heaters 30, 40 are 3
The film and the card are designed to pass between them with a distance d of ~4.

Further, the end surfaces 34, 44 are heated to around 130°C. The surfaces of the rollers 11 and 12 of the preheated pressure bonding roller 10 are heated to around 100°C (60 to 180°C) by radiant heat from the recesses 33 and 43 of the heaters 30 and 40. The upper roller 11 of the preheated pressure bonding roller 10 and the upper roller 2 of the laminating roller 20
The rotating shafts 11b and 21b of 1 are each supported at both ends by two arms (not shown), and these two arms similarly support the rotating shafts 1 of the lower rollers 12 and 22.
2b. The rollers 11 and 21 and the rollers 12 and 2 are connected in parallel to two arms (not shown) that pivotally support both ends of the roller 22b, and are connected in parallel with long bolts and nuts (not shown), respectively.
2 are brought into pressure contact from above and below, respectively.

The tightening position of this bolt is closer to the laminating roller 20 than the preheated pressure bonding roller 10, and the lamination roller 20 is closer to the preheated pressure bonding roller 10.
They are now in contact with each other at a higher pressure. In the apparatus of the present invention configured as described above, a card sandwiched between a film coated with a heat-sensitive adhesive on the inner surface is moved from the guide 1 to the pair of rollers 11 and 12 of the preheated pressure bonding roller 10.
When inserted between the cards, the card is sent backward (to the left in the figure) along with the film by the rotation of rollers 11 and 12.

At this time, the film and card are temporarily bonded over the entire surface by the heat of both rollers 11 and 12 and relatively weak pressure. On this occasion,
Since both are adhered while being gradually pressurized from the front by the roller 10, air bubbles are not trapped between the two. Further, even after passing through the preheated pressure bonding roller 10, the card and film are temporarily bonded to each other on the entire surface, so that no air can enter between them. After the film and card pass through a preheated pressure roller 10, they are heated to a heater 3.
The heat-sensitive adhesive on the inner surface of the film becomes strong enough to completely adhere the film and the card due to the radiant heat.

A pair of rollers 21 of the laminating roller 20
, 22, and the film and card are completely adhered by the relatively large pressure. The thus formed laminated card has a flat surface.
The card is passed between the shaping plate 50 consisting of the holding plate 52 and the holding plate 52, where it is pressed flat by the weight of the holding plate 52, and the card is shaped into a flat shape before warping occurs, and heat is removed and the card is cooled. be done. The distance between the axes of the preheated pressure roller 10 and the laminating roller 20 is smaller than the length of the film and the card. It is becoming narrower and laminated.

At this time, since the rotational speed of the laminating roller 20 is slightly faster than the rotational speed of the preheated pressure bonding roller 10 as described above, the card is fed without being bent while being subjected to some tension.

Therefore, during this time, there is no risk that the card will bend and air will enter between the film and the card, and air bubbles are effectively prevented from entering. In addition, the preheated pressure roller 10
Various conventionally known heating means can be used as a means for applying preheating heat to the surface of the surface of the surface of the surface of the surface of the surface of the surface of the surface of the surface of the surface.
Not only can heaters be saved, but the preheated pressure roller can be heated in a short time.

In addition, if the roller is heated from the surface, the vorticity required to heat the roller is low, and therefore the degree of heat received by the roller itself is lower overall than when heating is performed from the inside. Therefore, it is particularly advantageous in terms of roller life. In other words, heating a resilient silicone roller or other roller from the inside to bring the surface temperature to the desired temperature requires a considerable amount of heat, and the internal width must be made considerably large. The lifespan of the heating element is shortened and the rise time is naturally longer than that of heating from the surface. As explained in detail above, according to the apparatus of the present invention, the film and the card are temporarily bonded on the entire surface while expelling the air between them before being heated for the final time, so air bubbles do not get trapped between the card and the film. This allows you to create more beautiful laminated cards.

[Brief explanation of the drawing]

The drawing is a side sectional view showing one embodiment of the present invention. 10...Preheated pressure roller 20...
... Laminating roller 30, 40 ... Heater, 50 ... Shaping board.

Claims (1)

[Scope of Claims] 1. A preheated pressure roller that overlays a transparent film and cards, presses them together, conveys them, and simultaneously preheats them to temporarily bond the entire surface; A card laminating device comprising a heater for heating both the films sent by the preheated pressure bonding roller and a laminating roller for pressurizing and laminating the film and cards that have passed through the heater in this order. . 2. A preheated pressure bonding roller that superimposes a transparent film and a card, presses them together, conveys them, and at the same time preheats them to temporarily bond the entire surface.This preheated pressure bonding roller is heated by radiant heat and the entire surface is temporarily bonded. A heater that heats the film and cards sent by the preheated pressure roller to adhere the film and cards, and a laminate roller that presses and laminates the film and cards that have passed through this heater in this order. 1. A card laminating device, characterized in that the laminating roller has a feeding speed higher than that of the preheated pressure bonding roller.