Vacuum pressure defrosting oven, also known as positive and negative pressure defrosting oven, vacuum defrosting machine, etc., is a device that uses vacuum and pressure, i.e. positive and negative pressure alternately, to eliminate the bubbles or holes in the chip bonding, substrate bonding surface or dispensing potting glue coating glue, which can effectively remove the bubbles from the product without damaging the surface integrity of the product.

Vacuum pressure defoaming oven is suitable for baking and defoaming of various materials, such as metal, plastic, glass, composite materials, etc. It is often used in chip bonding (DAF), screen bonding (OCA), Underfill, Potting or Printing coating (Printing) and other processes in semiconductor, new energy, automotive electronics, 5G communications, consumer electronics, MiniLED, aerospace and military industries.

Because in the above laminating or dispensing process, the product's laminating surface, glue or silver paste will inevitably appear bubbles or holes problems which not only affect the appearance of the product, the most important thing is that it will lead to poor product sealing and heat loss, seriously affect product performance and reliability, reduce product yield, and even cause quality accidents, safety risks. The best way to solve this problem is to use a vacuum pressure defoaming oven to eliminate cavities or bubbles. Today, we will take a closer look at this amazing defoamer from Haobao Technology.

1. The appearance of Haobao vacuum pressure defoaming oven

 Haobao vacuum pressure defoaming oven with positive and negative pressure and defoam fast.

2. Working principle of vacuum pressure defoaming oven

 The working principle of the vacuum pressure defoaming oven is to use the vacuum to form the pressure difference between the inside and outside of the bubble, so that the gas pressure in the bubble becomes larger and expands and breaks, while in the vacuum environment, the boiling point of water is reduced, and it is easier to form steam overflow after heating, so as to effectively reduce the void. At the same time, for some products, by filling nitrogen to give positive pressure, and repeatedly adjust the pressure change, can simulate how the material is subjected to pressure during actual use, making it easier for bubbles to extrude from the inside of the material and discharge.

 Each pressure tank of Haobao vacuum pressure oven has passed the national standard safety test

In general, vacuuming is to prevent adhesive materials such as glue from being heated and oxidized and causing bubbles to expand and overflow, while nitrogen pressurization is to remove the bubbles in the adhesive surface or adhesive to avoid the harm of bubble holes.

What should I do if there are bubbles when I fit, dispense or apply glue?

3.The advantages of vacuum pressure defoaming oven

The vacuum pressure defoaming oven developed by Haobao technology has five advantages, which are fast defoaming, high efficiency, wide adaptation, easy operation and safer, as follows:

1.Fast defoaming: The use of positive and negative pressure switching operation, effectively remove bubbles or holes, improve product quality, performance and reliability;

2.High efficiency:The oven heating andcooling speedare fast, single chamber, double chamber, three chamber and four chamberanda variety of chamberscan bechoosed,withhigh efficiency, large capacity, can greatly shorten the defoaming time andreduce production costs;

3,Wide adaptation: Haobao vacuum pressure oven adopts multiple filtration system, the chamber is made of stainless steel, high cleanliness, pressure, temperature and time can be adjusted according to demand, to adapt to various fields of defoaming process, whether it is metal, plastic, glue, glass or composite materials, vacuum pressure defoaming oven can be easily solved.

4, easy to operate: the use of Haobao self-developed operating system and industrial computer, screen display and operation tips are simple and clear, temperature and pressure curves can be seen in real time, easy to operate, easy to manage and maintain.

5. Safer: vacuum pressure defrosting oven uses electric energy to work, does not produce any emissions polluting the environment, each pressure vessel has passed the strict national standard safety testing, equipment equipped with multiple protection devices and alarm system, more safe and environmental protection.

4. The application scenario or range of vacuum pressure defoaming oven.

Vacuum pressure defoaming oven can be used in semiconductor, automotive, 3C and other fields

1,Semiconductor: in the semiconductor chip bonding (DAF) process, the generation of bubbles will lead to subsequent stress, thermal resistance and other problems, so that the semiconductor chip and sheet are damaged by greater stress in the subsequent reflow packaging process. Vacuum pressure debubbling can effectively eliminate chip bonding and packaging problems.

2,Electronics industry: In the electronics industry, the bubbles generated by product printing or glue coating will affect its electrical conductivity, thermal conductivity and aesthetics. The use of vacuum pressure defrosting ovens can quickly and effectively remove these bubbles and improve product quality.

3. Automotive industry: Bubbles in automotive parts such as PI polymer materials will affect their strength and durability, and IGBT power modules at the car gauge level will also produce bubbles when the border sealant or silicone gel is injected. Through the application of vacuum pressure defoaming oven, the performance of the above auto parts can be ensured to achieve the optimal state, greatly improving the reliability.

4,Aerospace: aerospace material requirements are extremely strict, the existence of bubbles will seriously affect the performance of the material. The use of vacuum pressure defrosting ovens can ensure the quality of materials and provide a solid guarantee for the development of the aerospace industry.

5,Mobile phone and 3C: mobile phone and 3C field of screen fitting, product packaging, it is inevitable to produce bubbles, affecting product beauty and performance and reliability, the use of Haobao vacuum pressure defoaming oven, can effectively eliminate bubbles or holes.

6,Other industries: In addition to the above industries, vacuum pressure defoaming oven is also in Mini LED, display panel, construction, packaging, printing and other fields have a wide range of applications.

 Haobao vacuum pressure defoaming oven main application process

Vacuum pressure defrosting oven is a kind of precision control equipment, comprehensive use of heating and baking, vacuum, positive pressure and atmosphere control technology, often used in semiconductor, 5G communications, new energy, automotive electronics, consumer electronics, aerospace military and other fields to solve the bubble problem, is to eliminate the bubble hole, improve product quality, reliability and aesthetics of the choice. We welcome relevant manufacturers to know about the vacuum pressure defoaming oven, and make better use of this equipment to solve the bad problems in the production process and enhance the competitiveness of products and enterprises in the market.