RS-750-800-3 Positive and Negative Pressure Multi-Station Plastic Thermoforming Machine adopts internationally advanced plastic sheet forming technology. It is a plastic sheet forming machine with an integrated mechanical, pneumatic and electrical design. It can automatically complete a full range of processes including loading, feeding, heating, forming, punching, cutting, sta...
RS-750-610-4 Positive and Negative Pressure Multi-Station Plastic Thermoforming Machine
The RS-750-610-4 positive and negative pressure multi-station plastic thermoforming machine adopts internationally advanced plastic sheet forming technology. It is a plastic sheet forming equipment designed with integration of machinery, pneumatics and electricity. It can automat...
RS-650-450-4 Positive and Negative Pressure Multi-Station Plastic Thermoforming Machine
The RS-650-450-4 positive and negative pressure multi-station plastic thermoforming machine adopts internationally advanced plastic sheet forming technology. It is a plastic sheet forming equipment with an integrated mechanical, pneumatic and electrical design. It can automatically complete all pro...
Deep Dive into Servo-Driven Dynamic Stretch Control for PET
2026-02-01
In the highly competitive landscape of the plastic packaging industry, Wenzhou Rayshape Machinery Co., Ltd., a core subsidiary of the Elemotion Group, has redefined the boundaries of precision with its advanced Plastic Thermoforming Machine. At the heart of this innovation lies the Servo-Driven Dynamic Stretch Control system, a technology designed to solve the perennial problem of wall thickness inconsistency in deep-draw PET containers. When producing items such as high-transparency fruit cups or industrial blisters, the material's structural integrity often falters due to uneven stretching during the vacuum phase. Rayshape’s solution integrates high-torque servo motors directly into the plug-assist mechanism. Unlike traditional pneumatic cylinders which offer binary speed control, our servo system allows for a meticulously programmed velocity curve. This means the plug can descend rapidly initially and then slow down progressively to ensure the PET sheet is distributed evenly against the mold walls. This granular control is vital for materials like A-PET and R-PET, which are prone to stress whitening if stretched too abruptly. Furthermore, this mechanical precision is backed by a five-point structural connecting rod system that ensures the clamping force remains uniform across the $730 \times 800$ plate area. By maintaining a tolerance of less than 0.05mm across the mold surface, Rayshape ensures that every product—from the first mold to the one-millionth—meets the highest quality standards. This commitment to mechanical excellence is a hallmark of the Elemotion spirit: "diligence, pragmatism, and self-surpassing excellence." For manufacturers, this translates to reduced material waste, as thinner sheets can be used to achieve the same structural strength, significantly lowering the total cost of ownership. Beyond hardware, the system is managed by a future-oriented PLC that stores up to 90 sets of production data, allowing for rapid changeovers between complex mold sets. Located at No. 19 Pinghai Avenue, Wenzhou, Rayshape is not just a machine supplier but a strategic partner providing high-end automated equipment that guarantees a stable and reliable output for the global market. Our seasoned R&D team continues to push the limits of what is possible in thermoforming, ensuring that our clients stay ahead of the curve in terms of both production speed (up to 45 molds per minute) and energy efficiency.
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