Low energy fuse and method for its manufacture

Details Low energy fuse and method for its manufacture Low energy fuse and method for its manufacture

1997-01-21

1998-12-01

Nelson, Peter A.

Plastic and nonmetallic article shaping or treating: processes

Explosive or propellant article shaping or treating

Extrusion to form sheet or rod

86 2015, 102332, C06B 2100, F42B 300

Patent

active

058443223

ABSTRACT:
A low energy fuse, comprising a plastic tube with a channel, the channel containing a reactive material able upon ignition to sustain a shock wave within the channel, the tube comprising at least two layers of plastic materials, a first plastic layer closer to the channel and a second plastic layer outside the first layer, at least the second layer containing a major amount of draw orientable polymer resin. The polymer in the second layer is axially oriented to an orientation degree (as defined) of more than 25% and less than 90% and that the polymer of the first layer has an axial orientation degree not exceeding 10% orientation degree units more than that of the second layer. The tube can be manufactured by a) forming, by extrusion of the first layer plastic, the first layer in the form of a tube, b) introducing the reactive material in the tube channel, c) limiting stretching of the first layer to give a low degree of orientation, not exceeding 10% (as defined), d) forming, by extrusion of the second layer plastic, the second layer around the first tube, while the first layer have said low degree of orientation, and e) cold-stretching the first and second layers together.

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English translation of opposition document filed on behalf to TEC Harseim S.A.I.C. in the Chilean Patent Office.
English translation of opposition document filed on behalf of The Ensign Bickford Co. in the Chilean Patent Office.
English translation of pp. 14 and 15 of a Technical Manual edited by DENASA.
Encyclopedia of Polymer Science and Engineering, 1988, vol. 14, pp. 542, 564-576, by H F Mark et al.

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