JPS634500B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a laminating device that is capable of continuously attaching a laminating sheet to the surface of a profiled material with complex irregularities, such as aluminum sash.

The applicant of this patent disclosed the structure of a laminating device in Patent Application No. 125684 of 1981, but subsequent research revealed the following drawbacks.

In other words, since the above-mentioned laminating apparatus uses a female die having an inner surface predetermined according to the shape of the profiled material, if the profiled material has dimensional tolerance, especially if it has a negative dimensional tolerance, Air is contained between the surface and the laminate sheet, and there is a risk that the laminate sheet and the profiled material will be partially separated during finishing, reducing the product value.

The present invention eliminates the above-mentioned drawbacks by making the inner wall of the female mold movable according to the dimensional tolerance of the profile, and will be explained in detail below with reference to the accompanying drawings showing an embodiment.

Fig. 1 is a lamination process diagram using the laminating apparatus of the present invention, and 4 in the figure indicates a long, irregularly shaped material made of aluminum, synthetic resin, steel, or wood with a complex uneven surface. It is fed by roller 5.

6 indicates a preheating part for preheating the profiled material 4 to a temperature suitable for lamination, which is usually 60 to 200°C.
Heat the profile 4 until .

Reference numeral 7 indicates a laminate sheet, which is made of a desired material such as a printed sheet made of various synthetic resins, flexible plywood made by laminating a synthetic resin sheet and printed paper, or a waterproof paper sheet. This laminate sheet 7 may have an adhesive adhered to the back surface thereof, and a back paper 8 may be bonded to the back surface with the adhesive surface covered.

Reference numeral 9 indicates a roller for feeding the laminate sheet 7, and 10 indicates a roller for peeling the back paper 8 from the laminate sheet 7 and sending it out to a winding roll 8'.

Reference numeral 11 indicates a laminating device, which is the most important aspect of the present invention, and 12 indicates an auxiliary laminating device, which will be described later, for performing the process of attaching the laminate sheet 7 to the profiled material 4 in areas where air removal and vacuum lamination cannot be performed.
Reference numeral 13 indicates a depressurized chamber surrounding the laminating device 11 and the auxiliary laminating device 12. The pressure inside the chamber is reduced from atmospheric pressure, and the chamber is provided to prevent air bubbles from intervening as much as possible between the laminate sheet 7 and the profiled material 4 during lamination processing. It is something. Reference numeral 14 indicates a cutter for cutting the laminated long profile material 4 to a desired length, and reference numeral 15 indicates a laminated product.

The laminating device 11 has an inner surface as shown in FIG. 3, which has almost the same shape as the profiled material 4 shown in FIG. It consists of a female die 18 having a number of communicating holes or slits for air vents 17, and a vacuum pump 19 communicating with the air reservoir chamber 14.

Here, the inner wall 22 provided with the air vent 17 is constituted by a plurality of plate materials 23, 23... of a predetermined shape, and furthermore, a biasing means for constantly biasing each of the plate materials 23, 23... 24, 24... are provided.

The female mold 18 usually has a length of about 1 m, and its inner surface is coated with Teflon or the like to ensure good sliding with the laminate sheet 7.

The auxiliary laminating device 12 is a device that uses rollers 21 to affix the laminate sheet 7 to the folded portion 20 of the profiled material 4 as shown in FIG. 2, which cannot be laminated under reduced pressure without air removal.

The operation of the laminating process having the above structure is as follows.

The back paper 8 is peeled off from the laminate sheet 7 by the winding roll 8' and the rolls 10, 10, and the surface of the laminate sheet 7 from which the back paper 8 has been peeled off (the surface to which no adhesive is applied) is inside the female mold 18. The laminate sheet 7 is guided into the female mold 18 so as to face the side surface.

When the air in the air reservoir 16 of the female mold 18 is sucked by the vacuum pump 19, the laminate sheet 7 is attracted to the inner surface of the female mold 18.

On the other hand, in order to improve adhesion, the profiled material 4 is passed through the preheating chamber 6 and preheated to 60 to 200°C, and then fed into the female mold 18. Since the side surface is formed so that the shaped material can be inserted, the shaped material 4 comes into contact with the entire bent inner circumference of the laminate sheet 7 sucked into the female die 18.
The adhesive force of the adhesive applied to the laminate sheet 7 is greater than the suction force of the vacuum pump 19, and the laminate sheet 7 is adhered to the outer peripheral surface of the profiled material 4 while being sent to the next process.

Here, each plate material 23, 23 constituting the inner wall 22
... are constantly urged inward by the biasing means 24, 24..., so that even if there are dimensional tolerances in the shaped material, the laminate sheet can be reliably attached to the outer peripheral surface of the shaped material 4. This makes it possible to reliably prevent air from being present between the laminate sheet 7 and the profiled material 4.

As described above, the profiled material 4 is made of the laminate sheet 7
However, depending on the bent shape, the laminate sheet is sent to the auxiliary laminating device 12 and laminated in order to affix the laminate sheet to the three-dimensional folded portion 20, which cannot be laminated by air extraction and vacuum suction alone.

In the auxiliary laminating device 12, the laminate sheet 7 is stuck to the folded portion 20 by a conventionally used roll 21 (see FIG. 2).
The laminate sheet 7 is attached to the entire outer periphery of the deformed material 4, which is fed out and cut into a required length by a cutter 14.

Incidentally, in the above embodiment, an adhesive was applied to the back surface of the laminate sheet 7, but it goes without saying that the adhesive may be applied to the outer surface of the profiled material 4 instead of the laminate sheet 7.

Furthermore, if a coating layer (not shown) made of urethane, sponge, felt, Teflon, nylon, etc. is provided on the inner surface of the plate material 23 so as not to block the air vent, the laminate sheet 7 can be prevented from being damaged. There is no risk of deterioration in product value.

As described above, the present invention absorbs the dimensional tolerances that inevitably exist in irregularly shaped materials, attaches a laminate sheet to the outer surface of the irregularly shaped materials without the presence of air, and increases the product value. It has the unique effect of being able to be maintained.

Further, if a coating layer is provided on the inner surface of the plate material, the laminate sheet will not be damaged, so the product value can be maintained even higher.

[Brief explanation of the drawing]

FIG. 1 shows a process diagram of a laminating process using the laminating apparatus of the present invention, FIG. 2 shows a cross-sectional view of a profiled material, and FIG. 3 shows a cross-sectional view of the laminating apparatus. 4... Deformed material, 6... Heating chamber, 7... Laminating sheet, 11... Laminating device, 12... Auxiliary laminating device, 13... Decompression chamber, 14... Cutter, 15... Product, 18... Female type, 22...
Inner wall, 23...plate material, 24...biasing means.

Claims (1)

[Scope of Claims] 1. An air vent means is provided on the outer wall of the female mold, which has an inner surface into which the irregular shaped material to which the laminate sheet is to be attached can be inserted, and a plurality of air vent holes for suctioning the laminate sheet are provided on the inner wall. The laminating apparatus is characterized in that the inner wall is made up of a plurality of divided plate materials, and a biasing means is provided in the gap between the inner and outer walls to constantly bias each of the plate materials inward. 2. The laminating apparatus according to claim 1, characterized in that a buffer layer is provided on the inner surface.