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Title: Thermoplastic tape compaction device

A device is disclosed for bonding a thermoplastic tape to a substrate to form a fully consolidated composite. This device has an endless chain associated with a frame so as to rotate in a plane that is perpendicular to a long dimension of the tape, the chain having pivotally connected chain links with each of the links carrying a flexible foot member that extends outwardly from the chain. A selected number of the foot members contact the tape, after the heating thereof, to cause the heated tape to bond to the substrate. The foot members are each a thin band of metal oriented transversely to the chain, with a flexibility and width and length to contact the tape so as to cause the tape to conform to the substrate to achieve consolidation of the tape and the substrate. A biased leaf-type spring within the frame bears against an inner surface of the chain to provide the compliant pressure necessary to bond the tape to the substrate. The chain is supported by sprockets on shafts rotatably supported in the frame and, in one embodiment, one of the shafts has a drive unit to produce rotation such that the foot members inmore » contact with the tape move at the same speed as the tape. Cooling jets are positioned along the frame to cool the resultant consolidated composite. 5 figures.« less
Inventors:
Issue Date:
OSTI Identifier:
6661663
Assignee:
Martin Marietta Energy System, Inc., Oak Ridge, TN (United States) PTO; EDB-95-029735
Patent Number(s):
US 5376220; A
Application Number:
PPN: US 8-021876
Contract Number:
AC05-84OR21400
Resource Relation:
Patent File Date: 24 Feb 1993
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; COMPOSITE MATERIALS; FABRICATION; THERMOPLASTICS; BONDING; DESIGN; EQUIPMENT; JOINING; MATERIALS; ORGANIC COMPOUNDS; ORGANIC POLYMERS; PETROCHEMICALS; PETROLEUM PRODUCTS; PLASTICS; POLYMERS; SYNTHETIC MATERIALS 360601* -- Other Materials-- Preparation & Manufacture