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Hot Runners (3559-HR)

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Hot Runners (3559-hr)

Overview of Hot Runners (3559-HR)

— A hot runner system is an assembly of heated components used in plastic injection molds that inject molten plastic into the cavities of the mold. (The cavities are the part of the mold shaped like the parts to be produced.) In hot runner mold generally used pinpoint gate. By contrast, a cold runner is simply a channel formed between the two halves of the mold, for the purpose of carrying plastic from the injection molding machine nozzle to the cavities. Each time the mold opens to eject the newly formed plastic parts, the material in the runner is ejected as well, resulting in waste. A hot runner system usually includes a heated manifold and a number of heated nozzles. The main task of the manifold is to distribute the plastic entering the mold to the various nozzles which then meter it precisely to the injection points in the cavities.
Hot runner advantages: Shorter cycle time: No runner controlling the cooling time. Easier to start: Without runners to remove, and auto cycle occurs faster and more frequently. Less sink marks and under-filled parts: Unlike when plastic flows through a cold runner and loses heat to mold plates. Design flexibility: Can locate the gate at many points on the part. Balanced melt flow: Separate melt channels are in externally heated manifolds that are insulated from mold plates surrounding them.

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Professional Plastics supplies plastic sheets, rods, tubing, films and fabricated parts to all major metro areas in the USA including: Albuquerque, Atlanta, Austin, Bakersfield, Baltimore, Birmingham, Boise, Boston, Buffalo, Charlotte, Chicago, Cincinnati, Cleveland, Colorado Springs, Columbus, Dallas, Denver, Des Moines, Detroit, El Paso, Fort Worth, Fresno, Hartford, Houston, Indianapolis, Jacksonville, Kansas City, Los Angeles, Las Vegas, Long Beach, Louisville, Memphis, Mesa, Miami, Milwaukee, Minneapolis, Nashville, Newark, New Orleans, New York, Oakland, Oklahoma City, Omaha, Orlando, Philadelphia, Phoenix, Pittsburgh, Portland, Providence, Raleigh, Richmond, Riverside, Rochester NY, Rockford IL, Sacramento, Salt Lake City, San Antonio, San Diego, San Francisco, San Jose, Seattle, St. Louis, Tallahassee, Tampa, Tucson, Tulsa, Virginia Beach, Washington DC, and Wichita.

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