Delphi Automotive Systems Case Study

    Md Plastics Incorporated
    CASE HISTORY

  • COMPANY:Delphi Automotive Systems
  • DATE : 11/02/00
  • DESCRIPTION OF PROBLEM: A hot runner mold is used to produce a large part out of nylon 6-6 with a problem of un-melts causing the orifice of the hot tip to block and produce short shots and surface imperfections.
  • MACHINE DATA
  • MAKE: Cincinnati Vista
  • MODEL: VT 600
  • SCREW: 80mm
  • SCREW L/D: 20:1
  • RATED SHOT SIZE: 1701 grams.
  • PROCESS SETUP: BEFORE
  • SHOT SIZE : 1105.64 grams
  • RPM : 100
  • BACK PRESSURE: 10.34 bars.
  • RECOVERY RATE: 22.85 gr./rev.
  • CYCLE TIME: 60 sec.
  • MELT TEMP.: 288 C
  • PRODUCT SOLUTION: A multi-purpose Posi-Melt TM PATENT PENDING design eliminated the un-melts in the melt pool while lowering the melt temperature, RPM and backpressure. The lower melt temperature eliminated the heat induced splay and imperfections.
  • ECONOMIC GAIN: Reduction in scrap due to short shots and splay. Lower RPM and reduced backpressure reduces the likelihood of equipment failure and need for replacement
    and downtime.
  • PRODUCT DESCRIPTION:
    RESIN
  • MFG.: E.I. Dupont
  • TYPE: PA 6-6, Impact modified
  • PROCESS SETUP: AFTER
  • SHOT SIZE : 1105.64 grams
  • RPM : 77
  • BACK PRESSURE: 6.89 bar.
  • RECOVERY RATE: 25.344 gr./rev.
  • CYCLE TIME: 60 sec.
  • MELT TEMP.: 288 C
  • Md Plastics Inc.
    1361 Wardingley Ave., Columbiana, Ohio 44408
    (330) 482-5100 fax- (330) 482-5211 E-mail: mdplastic@msn.com
    Md Plastics Incorporated
    CASE HISTORY

  • COMPANY : Delphi Automotive SystemsDATE : 11/02/00
  • DESCRIPTION OF PROBLEM: A hot runner mold is used to produce a large part out ofnylon 6-6 with a problem of un-melts causing the orifice of the hot tip to block and produceshort shots and surface imperfections.
  • MACHINE DATAMAKE : Cincinnati VistaMODEL: VT 600SCREW : 80mmSCREW L/D: 20:1RATED SHOT SIZE: 1701 grams.
  • PROCESS SETUP: BEFORESHOT SIZE : 1105.64 gramsRPM : 100BACK PRESSURE: 10.34 bars.RECOVERY RATE: 22.85 gr./rev.CYCLE TIME: 60 sec.MELT TEMP.: 288 C
  • PRODUCT SOLUTION: A multi-purpose Posi-Melt TM PATENT PENDING design eliminated the un-melts in the melt pool while lowering the melt temperature, RPM and backpressure. Thelower melt temperature eliminated the heat induced splay and imperfections.
  • ECONOMIC GAIN: Reduction in scrap due to short shots and splay. Lower RPM andreduced backpressure reduces the likelihood of equipment failure and need for replacementand downtime.
  • PRODUCT DESCRIPTION:
  • RESINMFG.: E.I. DupontTYPE: PA 6-6, Impact modified
  • PROCESS SETUP: AFTERSHOT SIZE : 1105.64 gramsRPM : 77BACK PRESSURE: 6.89 bar.RECOVERY RATE: 25.344 gr./rev.CYCLE TIME: 60 sec.MELT TEMP.: 288 C
  • Md Plastics Inc.
    1361 Wardingley Ave., Columbiana, Ohio 44408(330) 482-5100 fax- (330) 482-5211 E-mail: mdplastic@msn.com