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US 5,312,052 AGranted
Method for reclaiming fiber reinforcement from a composite
OwnerMichael D. Dellekampinventor
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Abstract
An apparatus and method for reclaiming fiber reinforcement material from cured SMC waste products provides a series of roller mill pairs having a differential speed capacity between paired rollers. The rollers impart a shearing and crushing force to the material which breaks the bond between the reinforcement fiber filaments and the resin binder while preserving the structural integrity of the filaments.
Claims11
A method for reclaiming fiber reinforcement from a cured fiber reinforced plastic waste product, comprising the steps of:
- shearing and crushing said waste product using a roller mill having at least one roller pair which imparts a shearing and crushing force to said waste product sufficient to break the bond between fiber reinforcement filaments and plastic resin in the waste product while minimizing breakage of the reinforcement fiber filaments in the waste product;
- and
- separating the fiber reinforcement filaments from the remainder of the cured fiber reinforced plastic waste product subjected to said shearing and crushing step.
Dependencies are inferred from the claim text.