Composite prepreg application device

Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – Indefinite or running length flexible strand – rod – tube – or...

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156166, 156169, 156175, 156425, 156433, 156498, 156574, B65H 8100

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active

055870414

ABSTRACT:
A heated shoe and cooled pressure roller assembly for composite prepreg application is provided. The shoe assembly includes a heated forward contact surface having a curved pressure surface. The following cooled roller provides a continuous pressure to the thermoplastic while reducing the temperature to approximately 5.degree. C. below glass transition temperature. Electric heating coils inside the forward portion of the shoe heat a thermoplastic workpiece to approximately 100.degree. C. above the glass transition. Immediately following the heated contact surface, a cooled roller cools the work. The end sharpened shape of the heated shoe trailing edge tends to prevent slag buildup and maintain a uniform, relaxed stress fabrication.

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patent: 4990213 (1991-02-01), Brown et al.
patent: 4992133 (1991-02-01), Border
patent: 5045147 (1991-09-01), Benson et al.
Ermert, W, et al, "Ru Reinforcing Plastics with robots?" Plastics Engineering, May 1981, pp. 37-46.
Klein, Allen, "Automated tape laying", Advanced Composites, Jan./Feb. 1989, pp. 44-52.

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