PCB circuit board packaging is a crucial process, but many PCB board companies do not pay much attention to this final process, so a lot of packing work is simply taken, so that the PCB board is not well protected, then It will cause problems such as easy damage or friction on the surface of the PCB circuit board.
1. Process destination
This step of packaging is paid more attention in the PCB factory, and it is usually not as important as the steps in the process. The main reasons are: on the one hand, of course, because it does not generate added value, on the other hand, the Taiwan manufacturing industry has not paid attention to the packaging of products for a long time. The immeasurable benefits that can be brought about, and Japan does this best. Careful observation of some household electronics, daily necessities, and even food in Japan will make people prefer to spend more money to buy Japanese goods.
Therefore, the packaging is specially discussed independently, so that the PCB industry can know that a small improvement may have a great effect. Another example is that the Flexible PCB board is usually a small piece, and the number is very large. The packaging method of Japan company may be specially opened for the shape of a certain product as a packaging container, which is convenient to use and protect.
2. The discussion of packaging, the early packaging methods, see the table outdated shipping packaging methods, and list their missing in detail. There are still some small factories that use these methods for packaging.
The production capacity of domestic PCB board factories is expanding rapidly, and most of them are exported, so the competition is very fierce. Not only the competition between domestic factories, but also the competition with the top two PCB board factories in the United States and Japan, in addition to the technology of the product itself The level and quality are affirmed by customers, and the quality of packaging needs to be satisfied by customers. Almost all electronic factories of a certain scale now require the packaging of PCB board manufacturers to pay attention to the following matters, and some even directly give specifications for the packaging of shipments.
a. It must be vacuum packed; b. The number of boards per stack is limited according to the size too small; c. The weight of each box is limited; d. ;f. Specifications for resistance rate after sealing; g. Specifications for PE film and Air Bubble Sheet; h. Specifications for the tightness of the laminated PE film and the width of margins.
At present, the domestic vacuum skin packaging is similar, the main difference is only the effective working area and the degree of automation.
3. Vacuum Skin Packaging
3.1. Preparation: Position the PE film, manually operate whether the mechanical actions are normal, set the heating temperature of the PE film, vacuum suction time, etc.
3.2. Stacking board: When the number of stacked boards is fixed, the height is also fixed. At this time, it is necessary to consider how to stack them to maximize the output and save materials. The following are several principles:
a. The distance between the outermost plate and the edge must also be at least twice the thickness of the plate.
b. The spacing between each stack of boards depends on the specification (thickness) and (standard is 0.2m/m) of the PE film, using the principle of heating, softening and elongation, while vacuuming, cover the board and paste it with bubble cloth . The spacing is generally at least twice the total thickness of each stack. Too big and waste material; too small, it is difficult to cut and it is very easy to peel off the sticker or not stick at all.
c. If the size of the PANEL is not large, the above packaging method will waste materials and labor. If the quantity is very large, it can also be opened into a container similar to the packaging method of flexible board, and then shrink-wrapped with PE film. There is another way, subject to the consent of the customer, leave no space between each stack of boards, but separate them with cardboard, and take an appropriate number of stacks. There are also cardboard or corrugated paper underneath.
3.3. Start: A. Press start, the heated PE film is led down by the pressing frame to cover the table. B. Then suck in the vacuum pump at the bottom and stick to the circuit board, and paste it with the bubble cloth. C. Raise the outer frame after the heater is removed to cool down. D. After cutting off the PE film, pull open the chassis, and each stack can be cut and separated.
3.4. Packing: The packing method, if specified by the customer, must be in accordance with the packing specification of the customer; if not specified by the customer, the packing specification in the factory must also be formulated in the principle of protecting the board from external damage during transportation. Matters needing attention , as mentioned earlier, especially the packing of exported products should be paid special attention.
3.5. Other notes:
a. Information that must be written on the outside of the box, such as "mouth wheat head", part number (P/N), version, cycle, quantity, important and other information.
b. Attach relevant quality certificates, such as slices, solderability reports, test records, and various test reports required by customers, and place them in the way specified by the customer. Packaging is not a university question, but doing it with heart can save a lot of trouble that should not happen.
PCB board packaging is not a complicated thing. We only need to do the packing of every detail carefully, so as to effectively avoid unnecessary troubles in the later stage. If you want to know more, you can get to know Shenzhen pinban Technology Co., Ltd. through the consultation hotline.
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