Oliver Rubber debuts envelope spreader for up to 58-inch retreads

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Oliver Rubber recently introduced a new envelope spreader for use in the retreading process, which helps mechanically facilitate enveloping prior to curing. The company says that with a push of the foot pedal, its 1137 Envelope Expander uses preset adjustments to mechanically stretch the envelope to the optimum diameter, thus reliably minimizing envelope stretch and in turn increasing envelope life. The new Oliver spreader was developed and manufactured by the company’s Salisbury machinery division in Salisbury, N.C.

“This robust, reliable machine should extend envelope life, improve throughput and help lighten the load on the operator,” says Bill Guzick, president of Greeneville, S.C.-based Oliver Rubber Co. “We fully expect this new spreader to help make our customers to be more productive, allowing them to finish more retreads in less time. The response we’ve gotten so far has been overwhelmingly positive.”

Oliver says the new spreader features:

  • Installation under the monorail;
  • Robust frame and mechanism;
  • Synchronized arm movement;
  • Manually adjustable height and tilt;
  • Single cylinder actuation;
  • Double-sided envelope fingers and dual footvalves for easy access and operation from either side;
  • Easily removed doors for cylinder and mechanism maintenance;
  • Manually selected, quick adjust, five-position stretcher arm design; and
  • Operation diameter range from 16-inch minimum (fully retracted) to 58-inch maximum (fully expanded).