The application process of solvent recovery machines in the electronic product manufacturing industry
I. Main Application Process Steps
The manufacturing of electronic products involves multiple cleaning and processing steps that use solvents:
SMT (Surface Mount Technology) and PCB (Printed Circuit Board) Manufacturing:
Post-weld cleaning: Remove solder paste residues and flux. Common solvents include isopropyl alcohol (IPA), alcohol-ether mixed solvents, and hydrocarbon cleaning agents, etc.
Steel mesh / stencil cleaning: Clean the steel mesh used for printing solder paste. Use dedicated cleaning agents or IPA.
PCB board oil removal and cleaning: Performed before electroplating or soldering.
Semiconductor and Chip Manufacturing:
Wafer cleaning: Ultra-precise cleaning is required before and after processes such as lithography, etching, and deposition. High-purity solvents such as acetone, IPA (isopropyl alcohol), NMP (N-methylpyrrolidone), and PGMEA (propylene glycol monomethyl ether acetate) are used.
Photoresist removal and stripping: Use a dedicated stripping solution (typically containing organic amines, DMSO, etc.).
Cleaning of tools and equipment components: cleaning of valves, chambers, fixtures, etc.
Display panel manufacturing (LCD/OLED):
Glass substrate cleaning: Use IPA, acetone, and dedicated liquid crystal cleaning agent.
Lithography and etching processes: Similar to semiconductor processes, photoresist, developer, and stripper are used.
Coating and printing equipment cleaning:
Production of electronic components and precision parts:
Cleaning and degreasing of magnetic components, connectors, sensors, etc.
II. Core Value and Advantages of Applying Solvent Recovery Machines
Significantly reduce production costs:
Electronic-grade solvents are expensive (especially high-purity solvents). The recycling machine can regenerate 80% to 95% of the used solvents, directly saving the cost of purchasing new solvents.
Typical case: A medium-sized SMT factory uses 1 ton of IPA per month. Through recycling, it can save more than 70% of the solvent procurement cost. The payback period for equipment investment is usually 6 to 18 months.
Comply with environmental protection regulations and achieve green manufacturing:
Strictly reduce the discharge and treatment volume of hazardous waste liquid (waste solvent). The treatment cost of waste solvent is high (as hazardous waste, it is outsourced for disposal), and there are legal risks.
Help enterprises achieve their ESG goals of "circular economy" and "waste reduction and efficiency improvement", and enhance their environmental protection image.
Ensuring production safety and stability:
On-site recycling reduces the storage and transportation of a large amount of hazardous chemicals (waste solvents) within the factory area, lowering the risks of fire and leakage.
The recycling machine can provide a stable and reliable supply of regenerated solvents, reducing production disruptions caused by supply chain issues.
Improving process stability and product quality:
Modern high-end solvent recovery machines (especially distillation type) can effectively separate impurities such as oil, resin, and particles from solvents. The purity of the recovered solvents can reach over 99.5%, meeting or even exceeding the process requirements of electronic cleaning.
Stable solvent quality ensures consistent cleaning performance, which is conducive to maintaining product yield (such as preventing false soldering and ionic contamination).
