Molding Foam with a Smooth Surface
Three lines of Yizumi HPM presses are new adapted for the U.S. market. A large, two-platen model is molding MuCell foam with a hot/cold mold process.
Yizumi HPM recently revised several lines of machines specifically for the North American market, with appropriate safeties, UL certification, U.S. platen-mounting patterns, Bosch Rexroth hydraulics, and new KEBA touchscreen controls that maintain a uniform format across different machine lines. NPE features three machines with “N” (for North American) designation:
• A 1200-ton, 240-oz DP-N series two-platen, servo-hydraulic model in a series from 550 to 3500 tons. It uses Trexel’s MuCell foam technology to mold a protective briefcase in an aluminum mold. Yizumi FoamPro technology combines MuCell with rapid-heat/cool mold technology, using a TCU from Single. This produces a range of surface textures, from leather-grain to high gloss.
• A 360-ton, 34-oz A5-N series servo-hydraulic toggle in a line from 65 to 1125 tons. It is molding a 2.5-gal pail using the HPM Double-Wave screw technology for rapid recovery with excellent melt quality.
• A 65-ton, 2-oz model from the firm’s newest all-electric FE-N series (65 to 290 tons). This machine is running a small medical part.
Related Content
-
Understanding the Effect of Pressure Losses on Injection Molded Parts
The compressibility of plastics as a class of materials means the pressure punched into the machine control and the pressure the melt experiences at the end of fill within the mold will be very different. What does this difference mean for process consistency and part quality?
-
What to Look for in High-Speed Automation for Pipette Production
Automation is a must-have for molders of pipettes. Make sure your supplier provides assurances of throughput and output, manpower utilization, floor space consumption and payback period.
-
A Systematic Approach to Process Development
The path to a no-baby-sitting injection molding process is paved with data and can be found by following certain steps.