Global Patent Index - EP 0227040 A3

EP 0227040 A3 19880810 - PROCESS AND APPARATUS FOR MAKING A SPIRAL FABRIC

Title (en)

PROCESS AND APPARATUS FOR MAKING A SPIRAL FABRIC

Publication

EP 0227040 A3 19880810 (DE)

Application

EP 86117627 A 19861218

Priority

DE 3545805 A 19851223

Abstract (en)

[origin: US4750253A] The method produces a flat spiral link assembly from at least four synthetic resin monofilament helices wound winding to winding which are simultaneously supplied for meshing engagement. Before being meshed the helices are stretched to at least three times their length and are thermoset in stretched condition. The alternatingly right-hand and left-hand helices are caused to mesh in zipper fashion and are interlocked by pintle wires. In order to facilitate the insertion of the pintle wires the helices are extended by about five percent. The apparatus for performing the method comprises two feed rolls forming a first roll nip through which helices are passed to a heating chamber. Draw-off rolls withdraw the helices from the heating chamber at least at three times the peripheral speed of the feed rolls. The apparatus also comprises a shunt for joining the helices and a device for inserting the pintle wires.

IPC 1-7

D21F 1/00

IPC 8 full level

B29D 29/06 (2006.01); D21F 1/00 (2006.01)

CPC (source: EP US)

D21F 1/0072 (2013.01 - EP US); Y10T 29/49838 (2015.01 - EP US); Y10T 29/53696 (2015.01 - EP US)

Citation (search report)

Designated contracting state (EPC)

AT BE CH DE ES FR GB IT LI NL SE

DOCDB simple family (publication)

EP 0227040 A2 19870701; EP 0227040 A3 19880810; BR 8606380 A 19871013; DE 3545805 A1 19870625; FI 865210 A0 19861219; FI 865210 A 19870624; JP S62158027 A 19870714; NO 865200 D0 19861219; NO 865200 L 19870624; US 4750253 A 19880614; ZA 869619 B 19870826

DOCDB simple family (application)

EP 86117627 A 19861218; BR 8606380 A 19861222; DE 3545805 A 19851223; FI 865210 A 19861219; JP 30618386 A 19861222; NO 865200 A 19861219; US 94411686 A 19861222; ZA 869619 A 19861222