Views: 56 Author: Site Editor Publish Time: 2022-03-24 Origin: Site
The use of silicone dispenser machine requires a special glue to be applied to the position on the PCB board where the patch is required to fix the patch component, and then undergo wave soldering after curing. Dispensing is performed automatically according to the program.
What is the difference between one-component and two-component silicone machine printing, which one is better?
How are the parts of the silicone dispenser machine cleaned specifically?
What is the reason for choosing silicone dispenser machine?
The silicone machine printing can be divided into one-component silica gel and two-component silica gel, and the two-component silica gel is divided into 10:1 according to the mixing ratio.
, 100:2, 1:1.
One-component silica gel is mostly used for glue dispensing, curing at room temperature, because it is not suitable for color matching and poor environmental performance, if environmental protection requirements are high, it will basically not work;
1:1 two-component silica gel is not suitable for color mixing, only RG-1550 is used as a transparent glue for printing processes with special requirements;
The 100:2 two-component silica gel is the most used two-component silica gel, which can be applied to various fabrics to make a variety of different printing effects. Long operation time, no layering, suitable for silicone machine printing;
The 10:1 two-component silica gel is more convenient to operate and easy to layer. It is difficult to dry when the curing agent is added less and more.
1. Dispensing needle of silicone dispenser machine: The bending or abrasion of needle and stopper may have a vital influence on the quality of dispensing. If the temperature is high or if it is not cleaned for a long time, the patch glue may also be solidified or semi-cured on the inner surface of the needle to cause blockage. Regularly check the dispensing needle and clean up if contamination is found. Immersion of the needle in a compatible solvent is a common method. It is too inefficient to remove all uncured materials by soaking. The high-pressure spray with compatible solvent can be used to blow the glue out of the inner hole of the needle, and then use dry compressed air. Inside the hole, let the needle dry.
2. Metal template of silicone dispenser machine: In order to avoid the erosion of the template and the patch glue of the screen by the cleaning agent, first use the pre-cleaning process, and then use a stronger cleaning agent, manual operation, to avoid the cleaning agent and the patch glue Contact, and then use ordinary cleaning agent to clean the template.
3. Plastic template of silicone dispenser machine: During the cleaning of the plastic template, electrostatic discharge may occur. So use a special anti-static cleaner to avoid this phenomenon.
Silica gel is a kind of multifunctional sealant with the widest operating temperature range (-76°F to 600°F). The one-component silica gel cures with moisture to form a tough solid. It is a very good general-purpose sealant with good weather resistance, abrasion resistance, moisture resistance and ozone resistance. Silicone sealants are generally easy to be extruded and easy to handle. At the same time, silicone dispenser machines are mostly single-component, with good adhesion and extensibility. It is a non-corrosive and flexible product, can bond many substrates, still has good performance in a wide temperature range, and is resistant to most chemicals and various climatic environments.
Dong Guan Do Hearts Technology Co.,Ltd has focused on the development and production of silicone dispenser machines for several years. And it commits to provide perfect service for every customer from all over the world.