Device for grooving rubber material

Details Device for grooving rubber material Device for grooving rubber material

1985-08-08

1986-05-20

Flint, Jr., J. Howard

Plastic article or earthenware shaping or treating: apparatus

Press forming means, press reshaping means, or vulcanizing...

Means corrugating a preform

425363, B29C 1500

Patent

active

045898340

ABSTRACT:
Device for striating laterally or diagonally an unvulcanized rubber strip at equal intervals to create air escapes comprises a pleat roll having a plurality of rollers, each of which presses the rubber strip to the pleat roll independently and which have gaps between roller of the first pressing member. A second pressing member includes a plurality of roller, each of which presses the rubber strip to the pleat roll independently and which have the widths greater than the gaps between rollers of the first pressing and the gaps between rollers of the second pressing member narrower than the widths of the rollers of the first pressing member. The second pressing member is positioned to connect the discontinuous striae of the rubber strip in the lateral or diagonal direction, which are striatec with the first pressing member and the ridges of the roll. A transfer device is positioned interpose to the rubber strip between the pleat roll and the first and second members.

REFERENCES:
patent: 3197536 (1965-07-01), French
patent: 4033709 (1977-07-01), Kroyer
patent: 4245975 (1981-01-01), Hattori

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