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Circuit board vacuum packaging film thickness width selection principle?
As for the correct and reasonable selection of the width and thickness of the vacuum packaging film for PCB boards, it is believed that each circuit board factory pays more attention because this problem involves the actual effect of vacuum packaging on circuit boards and the problem of reducing the cost of product packaging materials. Today, the Xiaobian Packaging News and Information Department Xiaobian, using nearly 20 years of practical experience in the packaging of circuit boards, to do a discussion of jade.
First, from the specifications of vacuum packaging films for PCBs, the commonly used widths are 450mm, 510mm, 610mm, 650mm, 780mm, 880mm. This is mainly determined by the type of circuit board vacuum packaging machine used. The TB-390 Instantaneous Vacuum Packer uses a width of 450mm. Direct heat type 5540 semi-automatic and 5580 automatic vacuum body packaging machine, the width is 610MM. Thermostatic 4560 body-fit vacuum packaging machine with vacuum packaging film width of 510MM. The principle of determining the width of the packaging film is to add 6-7CM to the width of the machine packaging area, so that the clamping frame can clamp the PE vacuum film. There is a problem here that requires the purchase of various circuit board factories. Some of the commercially available PCB-to-vacuum body-fitting machines require a width of the packaging film that is approximately 10 cm wider than the width of the packing table of the packaging machine, resulting in a vacuum package of approximately 3-4 CM in width. PE film waste. It is advisable not to purchase such vacuum packaging equipment in order to avoid wasting of long-term invisible packaging materials.
Secondly, in terms of thickness, the standard thicknesses are 0.18mm, 0.20mm, 0.23mm, 0.25mm, 0.30mm, 0.35mm and so on. Because the circuit board is a stack of packages, generally each sheet thickness is 1.6mm, usually 30 sheets (whole stacking height 48mm) or 50 sheets (all stacking height 80mm) are stacked and placed in the vacuum chamber of the vacuum packaging machine of the circuit board. , Vacuum blister packaging. Thickness selection principle: According to the circuit board stack height to choose, the higher the need to use thicker vacuum packaging film, 20 with 0.18MM thickness, 30 with 0.20-0.22MM, 50 need to use 0.30MM-0.35MM thickness. In this way, it can be truly selected on an as-needed basis to eliminate waste on the material and ensure the vacuum packaging effect of the product.
Third, there is another place worthy of everyone's attention, that is, the distance between the circuit board stack and stack. The theoretical distance is twice the stack height to ensure the vacuum tight packaging effect. However, in practice, this distance will tend to be smaller, because circuit board manufacturers want to put more products at a time to reduce the cost of packaging materials. So this distance is often less than twice the height, more than one fold higher and more points. The smaller the inter-stack spacing, the thicker the point of the circuit board PE vacuum packaging film, in order to ensure the packaging effect.
Dongguan Zhongtang Fengyuan Packing Products Factory, has been specialized in manufacturing all kinds of PCB board vacuum packaging films for nearly 20 years. It completely manufactures and controls product quality according to the national standard of plastic packaging film. The price is reasonable and delivery is timely. If you need to know the product details, please Contact the senior manager of PCB board packaging consultant Tang Yuezhong of the company, mobile phone 13509839987, the national free consultation hotline: 400-889-6006; enterprise QQ: 2850670788, website: www.tietibaozhuang.com.cn; www.skinpack-cn.com.