3539680

Information

• Patent Grant
• 3539680

• References
• Source

• Patent Number

  3,539,680

• Date Filed

  Not available

• Date Issued

  Tuesday, November 10, 1970
  54 years ago

• CPC

  • D02J1/228 - Stretching in two or more steps, with or without intermediate steps
  • D01D5/16 - using rollers, or like mechanical devices
  • D01F6/62 - from polyesters
  • D02J1/22 - Stretching or tensioning, shrinking or relaxing
  • D02J1/224 - Selection or control of the temperature during stretching
  • D02J1/225 - Mechanical characteristics of stretching apparatus
  • D02J1/227 - Control of the stretching tension; Localisation of the stretching neck; Draw-pins

• US Classifications

  • 264 - Plastic and nonmetallic article shaping or treating: processes
  • 425 - Plastic article or earthenware shaping or treating: apparatus