Chem-T rend Product Increases Curing Envelope Life Situation: A tire retreading customer was experiencing difficulties in removing the envelopes from the outside of finished retreaded tires after removing them from the autoclave. The average life of their envelopes was 50-60 retreaded tires. The typical failure of the envelopes came from tearing at the thin edges of the envelope caused by forceful removal of the envelope from the finis

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