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Copper clad laminate hot press is mainly based on press functionality, reliability, service and price to evaluate and select. The function and performance of copper clad laminate hot press and heating equipment on the market are also mixed, so how to correctly purchase the right copper clad laminate hot press and heating equipment has become a prerequisite for understanding.

Heating equipment of copper clad laminate hot press

1. Comparison of heating methods

The traditional heating methods are steam heating and electric heating. Steam heating temperature rise fast, but need to configure pressure boiler, pipeline pressure is high, steam easy to condense into water caused by uneven plate temperature; electric heating has the characteristics of fast heating, high heating temperature, easy control, etc., but the power consumption is large, high operating costs.

PCB circuit board and FPC flexible circuit board thermocompression bonding machine heating methods currently mainly steam, heat transfer oil two ways. At present, most of the customers contacted by Europe can use oil circulation temperature control machine and heat transfer oil heating method.

(1) Steam heating

Steam is sent directly from the steam boiler to the laminator. Steam temperature is proportional to steam pressure, as long as the control of steam pressure, can achieve the purpose of temperature control. When steam is used as heat source, the temperature difference of laminator fluctuates greatly. Hot platen cooling can be directly cooled with cold water. Steam heating equipment is relatively simple and less investment, so it is still used by many copper clad laminate factories.

(2) Oil circulation temperature control machine heating

The heating mode of oil circulation temperature control machine is realized by heat conduction oil circulation. The hot plate itself has a thermal cycle. When the temperature of the hot plate is lower than the set value, the oil cycle temperature control machine starts heating to maintain the temperature of the hot plate within the set range. Usually, the temperature difference can be controlled within the range of ±1℃ to meet the production requirements of copper clad laminate.

heat oil of that hot press plate is circulate through one or more heat exchangers to gradually cool down the hot oil to realize the purpose of gradually cool down the hot press plate. Because the cooling process has a certain impact on the warpage and size stability of the product, there are various forms of cooling design for the laminating machine. It should not only adapt to the requirements of slow first and then fast cooling, but also to the product quality, without making the production cycle too long, and at the same time, it should be conducive to energy saving. Due to its high temperature control accuracy, if higher heating temperature is required in production, it can also be realized, because the thermal decomposition temperature of synthetic hot oil is above 310 ° C, while steam and superheated water cannot be reached, and many copper clad laminate factories in China have adopted oil heating systems. The advantages of oil circulation temperature control machine heating are: high heat capacity, uniform temperature, can be heated to a very high temperature under normal pressure, low heat loss.

2, hot plate performance

The hot platen is thin and easy to preheat and control the temperature, but the requirements for the machined parts are high. The heating channel of hot medium flowing in hot platen is generally not paid attention to by furniture industry insiders. The correct circuit design should be conducive to the flow of heat medium, conducive to uniform temperature rise of the plate surface, and reduce the leakage of heat medium.

3. Connection and sealing

The connection pipeline of the hot press plate is basically dominated by flexible pipes, and the main domestic metal hoses are mainly used. Gasket material traditional use of asbestos rubber sheet, new materials such as PTFE, winding graphite, etc., its sealing effect is more ideal.