Plastic Welding Services and Applications

Plastic welding is a post-molding process used to join two or more compatible thermoplastic parts together by applying heat, pressure, or friction to create a durable molecular bond. Unlike adhesives or mechanical fasteners, plastic welding offers a clean, strong, and seamless connection that can meet both aesthetic and functional requirements.

At PMC, we offer a wide range of plastic welding services designed to support high-performance applications across multiple industries—including automotive, medical, consumer products, and packaging. Whether your components feature complex geometries or require airtight, watertight, or pressure-resistant joints, our welding capabilities ensure quality, reliability, and precision.

Why Choose Plastic Welding?

Plastic welding is often the preferred joining method for molded plastic parts because it provides:

Strong, permanent bonds without the need for adhesives or fasteners
Improved aesthetics with clean, flush seams
Enhanced durability in high-stress or high-performance environments
Excellent compatibility with complex shapes and tight tolerances
Cost-effective assembly for medium- to high-volume production

When strength, precision, and reliability matter, plastic welding offers a dependable solution that integrates seamlessly with your injection molding project.

Plastic Welding Methods Offered by PMC

PMC offers a variety of plastic welding techniques to match your application’s material, geometry, and performance requirements. Our team evaluates each project and recommends the most effective method to ensure structural integrity and compliance with your specifications.

Our capabilities include:

Ultrasonic Plastic Welding – Uses high-frequency vibrations to weld parts at the joint interface. Ideal for fast, clean welds on smaller or intricate components.
Hot Plate Welding – Heats both parts on a hot surface before joining, used for large or complex components with flat mating surfaces.
Plastic Spin Welding – Rotates one part against another under pressure to generate friction and heat, great for round or cylindrical parts.
Vibration or Friction Welding – Relies on linear motion and pressure to generate heat and form a strong bond.
Laser Welding – Offers highly accurate, contactless welding for sensitive or intricate assemblies.
Contact (Spot) Welding – Direct application of heat and pressure at localized points for quick joins.
High Frequency Plastic Welding – Uses electromagnetic fields to generate heat in polar thermoplastics.
Solvent Welding – Chemically bonds parts using solvents that dissolve and fuse the surfaces together.
Application-Based Welding – Custom techniques and hybrid processes based on your unique part requirements.

Common Plastic Welding Applications

PMC supports a variety of industries and applications through precise plastic welding, including:

Medical devices and diagnostic housings
Consumer product enclosures
Automotive reservoirs, vents, and panels
Packaging components with sealing requirements
Industrial and electrical housings
Fluid and gas handling components

From tight-tolerance parts to high-volume production needs, our plastic welding services help ensure your product performs reliably in the field.

Partner with PMC for Expert Plastic Welding

Plastic Molded Concepts is your full-service partner for high-performance plastic welding solutions. With decades of experience in plastic molding and assembly, our team delivers quality at every step—from material selection to precision welding and inspection.