Table Low Pressure Conservation Paint with heat

Low-pressure table for the conservation and restoration of paint with a patented temperature regulation system.

All the usual processes of reintegration, flattening, etc. They can be performed on this table.

The table has a completely flat design to work with very large paintings.

The electronic temperature control is variable and has a regulator that is separated from the table. The regulator is very simple to use with independent control elements. The electrical supply cable for the heating element table can be plugged in behind the control unit. The control box and table can be easily moved around the studio.

The low pressure control can be adjusted with a potentiometer, thus adjusting the amount of suction we want to have. This control can be plugged in at the back of our control box.

The control unit has a 5 m long cable.

The control unit measures 35 cm wide x 70 cm high x 30 deep. Weight 60 kg.

The table has a structure of anodized aluminum profiles and 4 wheels with brakes, the height can be customized depending on the client's request.

The technology of heating the table is very important in this type of table, we must work with the correct temperature to treat our paintings on the canvas. It is therefore important to ensure stable and evenly distributed heating and to apply heat in a controlled and precisely dosed manner to the object to achieve an optimal result.

This heat emission system is different and better than other tables on the market, unlike other conventional tables that provide indirect heat by having a perforated surface and an element that emits heat separated from it. In our table the perforated surface is directly heated and is the element that emits the heat with which the element or surface of the table is in direct contact with the material to be restored. The heat is transmitted directly to the object, thus having a more exact and direct control of these temperatures.

Due to the thickness of the heating element, the heating and cooling times are very short.

In Figure 1: temperature / time diagram. Measurements were taken on the table surface without any objects

We turned on the thermostat at 20ºC for heating and went to 50ºC in a time of 50 seconds. The cooling was immediate by turning off the heating after reaching 50ºC

A = heating time

B= cooling phase

Due to the low mass of the heat emitting element, it is possible to precisely control the application of heat during our treatments. The time in which an object is subjected to heat during our treatment can be minimal if we wish. With this patented system, rapid and abrupt temperature changes are possible if we need it in our process.

In this way we avoid overheating and excessive subjection to heat due to system response. The temperature / time diagram shows us the short times necessary for the system to heat up, for example, 30ºC or cool down 30ºC.

In addition, we achieve a uniform distribution of heat as shown in the image of figure 2, the temperature difference is measured on a work surface of 1500mm x 1500mm and is only +/- 1.5 pc. This constant and precise distribution of heat over a work surface we also achieve with larger work surfaces of up to 2 x 3m and within the entire range of possible temperatures.

The temperature is controlled by a heat sensor that is connected directly to the heating element and is controlled electronically. If the preset temperature is exceeded or if there is a sensor failure, the sensor registers this and the heating element will automatically switch off and the error will be displayed on the digital display.

Figure 2: The thermographic image of the controller is shown, (measurements were taken on the top of the uncovered table) The color temperature varies on the work surface, which in this case is (1500mmx 1500mm) shows the maximum of 42.5ºC (white) and the minimum of 39.2 ºC (red)

This table represents a great advance in the restoration of paintings since the control of the temperature and its times are more exact and precise.

The pressure control unit is adjustable from or to the maximum, the pressure will depend on the object that we place on top and the work system, but it may be about 170mbar

The maximum temperature is 70ºC, variable from 20 to 70 ºC with digital control of tenth of a degree.

Loudness measured at a distance of 3 meters of 64 db/A

1500 x1100mm surface area size

Table weight 80 kg.

Consumption of the heat emitting element, 4 KW.