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How to choose the thickness and width of vacuum packaging film for circuit board reasonably?


How to choose the width and thickness of vacuum packaging film       for circuit board reasonably? I believe that all circuit board factories pay more attention to this problem, because this problem involves the actual effect of vacuum packaging of circuit boards and the problem of reducing the cost of packaging materials. Today, the editor of Fengyuan Packaging Information Department has nearly 20 years of practical experience in circuit board packaging, making a brick to attract jade.

 

 

     Video of vacuum packaging film for circuit board: 
    

 

   

    First, according to the width of the vacuum packaging film of the circuit board , the commonly used widths are 450 mm, 510 mm, 610 mm, 650 mm, 780 mm, 880 mm and so on. This is mainly based on the type of vacuum skin packaging machine for circuit boards. The vacuum packaging film width of the 4560 skin vacuum packaging machine is 510mm. The width of the directly heated 5540 semi-automatic and 5580 automatic vacuum skin packaging machines is 610 mm. The TB-390 instant vacuum packaging machine is 450 mm wide. The principle of determining the width of the packaging film is to add 6-7cm to the width of the packaging area of ​​the machine, so that the film clamping frame can accommodate the PE vacuum film. When buying a printed circuit board, there is one issue to be aware of. There are some vacuum assemblers on the market. The width of the required packaging film is about 10 cm wider than the width of the packaging machine's packaging table, which causes waste of vacuum packaging polyethylene film, and the width is about 3-4 cm. It is not recommended to buy this kind of vacuum packaging equipment to avoid long-term invisible packaging material waste. The vacuum packaging machine for printed circuit boards produced by our company will not cause the waste of packaging film. In the long run, it can save printed circuit board manufacturers significant material costs. Therefore, circuit board factories must pay attention to this detail when purchasing equipment.


    

    Secondly, in terms of the thickness of the vacuum packaging film for circuit boards, the standard thicknesses are 0.20mm, 0.18mm, 0.23mm, 0.25mm, 0.30mm, 0.35mm, etc. Since the circuit board is a stacked packing, generally each piece has a thickness of 1.6mm, which is generally a stack of 30 pieces (stack height 48 mm) or 50 pieces (stack height 80 mm), and is placed in the vacuum chamber of a vacuum packaging machine for vacuum suction. Plastic packaging. Thickness selection principle: According to the layer height of the circuit board, a thicker vacuum packaging film is required. 20 pieces are 0.18mm thick, 30 pieces are 0.20-0.22mm thick, and 50 pieces are 0.30mm-0.35mm thick. In this way, we can make a real choice according to the needs, eliminate waste of materials, and ensure the vacuum body fit packaging effect of the circuit board (PCB). The following are the effects of different thicknesses of polyethylene vacuum packaging films on printed circuit boards.

 

    

    Picture of vacuum packaging film for circuit board:

 Road board vacuum packaging film

    
   

 

     Picture of circuit board vacuum packaging film using different thickness PE vacuum packaging film:

 Picture of circuit board vacuum packaging film using different thickness PE vacuum packaging film:

 

    Third, there is one thing worth noting, that is the distance between the stack and the stack of the circuit board. In theory, the distance is twice the stack height to ensure that the vacuum tightens the packaging effect. But in practice, this distance is often smaller, because circuit board manufacturers want to invest more products at a time to reduce the cost of packaging materials. So this distance is usually less than two storeys high and two storeys high. The smaller the stacking distance, the thicker the vacuum packaging film of the circuit board PE, so as to ensure the packaging effect.

 

   

    Schematic diagram of stack height and stack distance of printed circuit board vacuum packaging:

 Schematic of stack height and stack distance of printed circuit board vacuum packaging

    
    

 

    Dongguan Zhongtang Fengyuan Packaging Products Factory, specializing in the production of vacuum circuit packaging films for various circuit boards , produces and controls product quality in full accordance with national plastic packaging film standards, reasonable prices and prompt delivery. For product details, please contact the company Manager Tang Yue, Senior PCB Packaging Consultant, National Free Consultation Hotline: Enterprise QQ: 2850670788,
 

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