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AAA MOULD - Plastic Injection Mould Manufacturer for custom mold design, precision processing, and plastic molding solutions.

Secondary Processing

AAA MOULD has established 3 pad printing lines, 2 assembly lines, and 1 automatic screen printing line in its clean workshop.

Add Value to Your Products: Professional Secondary Finishing Services

Provide secondary processing services such as polishing, painting, and screen printing to reprocess injection-molded parts.
Improve product appearance and enhance product functions and performance.
Transform ordinary injection-molded parts into exquisite finished products, presenting high-quality results.
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Secondary Processing Advantages

Functional Expansion: Composite processing technologies (such as insert molding and overmolding) endow plastic parts with functions like conductivity, heat dissipation, and load-bearing capacity.


Aesthetic Upgrade: Processes like spraying and electroplating can simulate textures of metal, wood grain, etc., to meet diverse design requirements.


Cost Optimization: Some secondary processing methods (e.g., ultrasonic welding) can replace traditional screw assembly, reducing the number of components and assembly time.


Performance Enhancement: Heat treatment, chemical treatment, etc., can improve the aging resistance and surface adhesion of plastic parts.

Customized Online 3D Printing Service

Secondary processing services cover processes such as polishing, painting, and screen printing. Through fine processing of injection-molded parts, the appearance texture and practical performance of products are comprehensively improved.

Mobile phone casings achieve a metallic texture through spraying, keyboard keys are labeled with characters via screen printing, and charger casings are sealed by ultrasonic welding.
Instrument panel surfaces are enhanced in aesthetics through electroplating, and door handles integrate metal skeletons via insert molding.
Syringe casings are marked with traceability codes by laser marking, and medical catheters achieve rigid-soft rubber connection through overmolding.
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Surface Treatment

Spraying
Process: Uniformly applying paint, coatings, etc., onto the surface of plastic parts through a spray gun to achieve effects such as coloring, rust prevention, and wear resistance.
Applications: Household appliance casings (e.g., TVs, air conditioners), automotive interior parts (e.g., instrument panels), toy exterior components.
Advantages: Rich color options, can cover surface defects to enhance aesthetics; some coatings can improve weather resistance.
Electroplating
Process: Depositing metal layers (such as chromium, nickel) on the surface of plastic parts through electrochemical methods to simulate metallic texture.
Applications: Automotive decorative parts (e.g., grilles, door handles), 3C products (e.g., mobile phone middle frames, laptop hinges).
Advantages: Enhances product texture and grade, improves electrical conductivity or corrosion resistance.
Screen Printing / Pad Printing
Process: Printing patterns and text onto the surface of plastic parts via a screen mesh or pad printing head.
Applications: Characters on keyboard keys, markings on electronic device operation panels, toy patterns.
Advantages: Low cost, suitable for small-batch customization; high pattern precision.
Laser Marking
Process: Using laser to burn permanent marks (such as logos, serial numbers) on the surface of plastic parts.
Applications: Medical devices (traceability codes), automotive components (model markings), high-end electronic products.
Advantages: Permanent and clear markings, environmentally friendly (no consumables), high precision.
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Structural Enhancement Processing

Insert Molding
Process: Embedding metal parts, electronic components, etc., into the mold for one-time integration with plastic during molding.
Applications: Automotive connectors (metal terminals + plastic housings), plastic parts with threaded inserts.
Advantages: Improves the strength and functionality of plastic parts while reducing assembly procedures.
Overmolding (Cladding Molding / 2K Molding)
Process: Secondary injection molding of another material (such as soft rubber or metal) onto the primary molded plastic part.
Applications: Tool handles (hard plastic + soft rubber anti-slip layer), two-color buttons (e.g., keyboard letters and background colors).
Advantages: Achieves material combination (such as rigid-flexible integration) to enhance functionality and appearance; reduces assembly steps.
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Functional Processing

Heat Treatment
Process: Heating or cooling plastic parts to improve internal stress distribution or crystallinity.
Applications: High-precision gears, aerospace structural components.
Advantages: Enhances dimensional stability and mechanical strength.
Chemical Treatment
Process: Modifying the surface polarity of plastic parts via solvents (e.g., flame treatment, plasma treatment) to improve adhesion.
Applications: Pretreatment for plastic parts requiring painting or bonding (e.g., surface activation of PP materials).
Advantages: Improves the reliability of subsequent processes (such as painting).
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Assembly and Composite Processing

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Ultrasonic Welding
Process: Using high-frequency vibration to melt and bond the contact surfaces of plastic parts for assembly. Applications: Electronic device casings (e.g., mobile phone battery covers), automotive filters. Advantages: Fast welding speed, high strength, and no need for additional adhesives.
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Hot/Cold Press Assembly
Process: Assembling multiple plastic parts or accessories together through heating or pressure (e.g., pressing in nuts, snap connections). Applications: Furniture hardware, toy assembly. Advantages: Simple process, suitable for mass production.
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AAA MOULD Your one-stop expert for custom mold design, precision processing, and plastic molding solutions.
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