To Clients:

We are capable and happy to provide complete machine assembly services to our customers. In order to provide you with a complete machine assembly quotation more efficiently and accurately, you need to provide complete and detailed assembly instructions or two complete samples, and clearly indicate which parts need to be produced by us and which parts must be supplied by you. In order to better control the quantity of the complete machine assembly, detailed test documents must be provided.

Our range of services includes:

  • Complete Electro-Mechanical Assembly
    • Conformal Coating
    • Various Testing Options

    • Static Packaging and Shockproof Treatment

  • 24-hour Customer Service + After-Sales Service + Repair Service

PCBA Coating Process


PCBA glue filling is often used on the motherboard of washing machines and circuit boards that need to work in humid and corrosive environments. It has a very good waterproof effect. When performing the glue filling process in the PCBA process, you need to pay attention to the following matters.. When performing the glue filling process in the PCBA process, you need to pay attention to the following：


1. Choose a suitable glue: silicone and epoxy potting glue are commonly used. , at least understand the "operation c window time" and "curing time" parameters.
2. The temperature of PCBA before filling the glue tank needs to be approximately the same as the temperature of the glue.
3. The PCB that needs to be sealed must first be heated in a baking tunnel and baked to 50°C.
4. Excessive flux residue needs to be cleaned to keep the PCBA board surface clean.
5. It is best to inject glue into the glue box first, and then put the PCBA in it.
6. The ratio of polyurethane potting glue must be accurate. The two commonly used ratio methods are 100:50 and 100:74, which are all based on the performance of the glue.

When filling glue, it is easy to produce bubbles, which is a problem that needs to be paid attention to when filling PCBA glue.


There are three ways to fill PCBA glue:


1. Semi-automatic glue filling

When filling the PCBA with glue, place it next to the assembly line, manually put the PCBA under the glue outlet, turn on the switch, and the machine will automatically fill the glue, and stop automatically after filling. Then the operator can put the filled PCBA on the assembly line. The semi-automatic glue filling machine is suitable for all types of PCBA, regardless of size.


2. Equipped with a three-axis robot glue filling machine for filling

If there are mostly small PCBA°, the glue filling method is also very simple. Put the PCBA into a jig, then put the jig on the table of the glue filling machine, press start, and the machine will start filling the glue. After it is finished, it automatically stops, and then the operator takes the jig off the table, then puts the jig on another board to install the PCBA, press start, and this cycle, all the operator has to do is to put the jig. Press Start.


3. Fully automatic glue filling line

Place the entire jig equipped with PCBA on the conveyor line, and the machine will automatically fill the glue and automatically feed the material to the oven, saving manual processes and achieving high efficiency.

Reliable packaging is an essential step

What are the materials of anti-static bags (shielding bags, aluminum foil bags, vacuum bags) used in packaging electronic components, PCBA boards, computer motherboards, graphics cards, hard drives, memory and other electronic products? What are its characteristics? ?

Product features: anti-static, moisture-proof, waterproof. Translucent, it is a composite product.

First product structure:
There are two types: APET/CPP and APET/PE.

Material characteristics:
CPE: Chlorinated polyethylene, produced by chlorination of high-density polyethylene (HDPE). Chemically stable, aging resistance, flame resistance, cold resistance, weather resistance, free coloring, chemical resistance, ozone resistance properties and electrical insulation as well as good compatibility and processability.
APET: Amorphous Polyethylene Terephthalate, chemical name: amorphous polyethylene terephthalate, is a blister material. Its low-temperature toughness (impact resistance and tear resistance) and heat resistance are better than other materials Excellent, with higher transparency in appearance. It can be used in packaging in cosmetics, food, electronics, toys, printing and other industries.

The main parameters:
Surface resistance: 106 --- 1011Ω/sq
Inner layer resistance: 106 --- 1011Ω/sq
Thickness: 0.06mm~0.18mm, regular thickness 0.12mm
Anti-static value: 1*10 8Ω-9*10 10Ω
Water vapor transmission rate (WVTR): ≤0.31g/m2·24h
Electrostatic shielding residual voltage: ≤30V
Electromagnetic interference attenuation (EMI): ≥25db
Test method: ASTM F1249-13, ASTM D3985-2005(2010)e1
Product Standards:
Comply with RoHS standards, environmentally friendly, pollution-free, recyclable, and in line with anti-static industry standards.
Product Usage:
It is widely used in anti-static and moisture-proof packaging of various PC boards, computer motherboards, sound cards, graphics cards, communications, optics, optoelectronics, network cards and static-sensitive high-tech electronic products. Such as PCBA boards, PCB boards, and IC integrated circuits in the electronics industry , chips, optical drives, hard drives, electronic components, etc.