Handheld plasma cleaning machines, with their core advantages of portability, flexibility, ease of operation, and no dead zones, address the surface cleaning and activation needs that traditional stationary equipment struggles to cover. They are widely used in various industries such as electronics, healthcare, automotive, printing, aerospace, and more.
Below are specific application scenarios and value demonstrations:
1. Electronics and 3C industry: addressing local cleaning and precision activation needs
In the electronics industry, a large number of workpieces have requirements such as "local contamination", "fine structures" (such as gaps, solder joints), or "non-batch processing". Handheld devices can precisely target specific areas, avoiding efficiency waste or damage caused by overall processing.
Local cleaning of PCB circuit boards and components
Scenario: Residual flux (rosin, resin), oxidation layer on solder joints, or oil/dust on connector pins after PCB soldering can easily lead to poor contact and signal attenuation.
Application: Align the handheld nozzle (with an inner diameter of 2-6mm) to the solder joint, pin, or connector interface. Through argon gas + a small amount of oxygen plasma (physical bombardment + chemical oxidation), remove flux residue (carbon content reduced from 15% to less than 3%), oxide layer (thickness < 5nm), and enhance conductivity reliability.
Case: During the repair of a mobile phone motherboard, a handheld device was used to clean the SIM card slot contacts, resulting in a reduction of contact resistance from 10Ω to below 0.5Ω, thereby resolving the "No Service" issue.
Surface activation of small electronic components
Scenario: Plastic casings (made of PP/ABS material) for micro sensors (such as temperature and humidity sensors) and Bluetooth modules require labeling or application of waterproof adhesive, but the original surface is hydrophobic (contact angle > 90°), making it prone to label detachment and adhesive layer cracking.
Application: Treat the shell bonding area (diameter 5-10mm) with oxygen plasma, reducing the surface contact angle to below 30° within 30 seconds, increasing the surface energy to above 60mN/m, elevating the label adhesion from "Level 1 (easy to peel off)" to "Level 5 (no peeling off)", and enhancing the waterproof sealability of the adhesive by 3 times.
Local repair of screens and panels
Scenario: Before the lamination of a mobile phone/tablet screen, residual fingerprint oils and dust on the frame gaps can easily lead to bubbles after lamination; or contamination from oxide layers on the flexible circuit board (FPC) of an OLED screen before soldering.
Application: Use a handheld fine nozzle (inner diameter 1-3mm) to penetrate into frame gaps (width < 1mm) and remove grease with **air plasma** (removal rate > 95%), or activate the FPC solder joint area, resulting in an increase in soldering yield from 85% to 99%.
II. Medical industry: local modification and disinfection needs of adaptive devices
The medical industry has extremely high requirements for "biocompatibility" and "sterility", and most devices have "irregular structures" (such as catheters, joints, and gaps). Handheld devices can achieve "precise modification + low-temperature disinfection", avoiding chemical disinfection residues or high-temperature damage.
Surface modification of medical catheters and minimally invasive devices
Scenario: Disposable infusion catheters (made of PVC) and metal jaws of endoscopic biopsy forceps require improvement in biocompatibility (to reduce cell adhesion) or anti-fouling properties (to prevent blood residue).
Application: The inner wall of the catheter (penetrated with a slender nozzle) or the surface of the forceps jaw is treated with nitrogen + oxygen plasma, introducing polar groups such as hydroxyl (-OH) and carboxyl (-COOH), reducing the contact angle of the catheter's inner wall from 80° to 20°, and decreasing blood residue by 70%. The corrosion resistance of the metal forceps jaw is enhanced, and its service life is extended by 2 times after sterilization.
Activation of medical consumables before pasting
Scenario: The non-woven fabric substrate (made of polypropylene) of medical adhesive bandages and band-aids needs to be combined with medical adhesive, but the inherent surface inertness makes the adhesive layer prone to detachment.
Application: Using a handheld device to perform oxygen plasma treatment on a localized area (10-20mm wide) of nonwoven fabric, the surface energy can be increased from 30mN/m to 65mN/m within 3 seconds, and the peel strength of the adhesive layer can be increased from 5N/25mm to 15N/25mm, thus avoiding adhesive tape detachment during use.
The core commonality of its application scenarios lies in "local processing", "flexible mobility", "discontinuous production", and "complex structure". When workpieces cannot be adapted for batch processing by fixed equipment (such as large parts or parts in small batches), or when they need to be processed in deep and narrow spaces (such as gaps, small holes, or curved surfaces), or when only specific areas (such as welding spots or bonding surfaces) need to be treated, handheld equipment can solve the problem with "low cost and high convenience", while avoiding chemical solvent pollution. It serves as a flexible supplement to traditional surface treatment processes.
