Spin Welding Machine

Typical applications
Spin welding is widely used in round plastic parts that require high-strength sealing, such as:
• Filter element‌: household water purifier filter element, industrial filter element, activated carbon filter element.
• ‌Automotive parts‌: oil cup, air duct, carburetor, etc.
• ‌Daily necessities‌: double-layer cup, thermos cup, float, dehydration container, etc.
Equipment type
According to needs, you can choose a positioning spin welding machine or a non-positioning spin welding machine. The former uses a servo motor to achieve high-precision angle control, which is suitable for complex alignment scenarios.

Consult

Features
Technical Indicators
Overall Dimension

Core Principles 1. Frictional Heating and Fusion Two round plastic workpieces rotate at high speed under pressure and rub. The contact surface heats up to the melting point or glass transition temperature of the material due to frictional heat, causing the surface to melt. Subsequently, the molten material is driven by external force to fuse and form a permanent connection after cooling. 2. Process Stages The spin melting welding process can be divided into four stages: o Frictional Heating: Interface friction generates heat and reaches the melting point of the plastic (0.5-2.0 seconds). o Melt Extrusion: The material begins to melt, and part of the melt forms flash due to pressure. o Dynamic Balance: The melting rate is balanced with the flash extrusion rate, and the rotation stops (0.5-2.0 seconds). o Cooling and Solidification: Maintain pressure until the joint solidifies (1-2 seconds). Technical Features • Applicable Materials: Mainly used for thermoplastics such as PE, PP, nylon, PET, etc., and some dissimilar plastics can also be welded. •‌ High-efficiency sealing‌: The welding time is short (usually only a few seconds), the joint strength is high and the sealing is good, which is suitable for products with watertight and airtight requirements. • ‌Positioning control‌: Through the positioning spin melting technology, the rotation angle and stop position can be accurately set to meet specific alignment requirements.