Hp-chemie Pelzer Research & Development Ltd.

Clion Ireland Holding Ltd.

Adler Pelzer Holding Gmbh

Hp Pelzer Holding Gmbh

Colm Doris

Norbert Nicolai

Marco Schneider

Reimund Piatkowski

Rod Morris-Kirby

Hans-Peter Keller

Olaf Dohring

Olaf DÖHRING

Olaf Döhring

Frank Temme

The present invention relates to a sound absorber consisting of a first non-woven fabric facing towards the sound-emitting source having a layer thickness within a range of from 2 to 15 mm, a density within a range of from 50 to 500 kg/m, a weight per surface area within a range of from 0.1 to 2.5 kg/m, and a flow resistance within a range of from 50 to 1000 kNs/m, and a second non-woven fabric facing away from the sound-emitting source has a layer thickness within a range of from 10 to 28 mm, a density within a range of from 20 to 100 kg/m, a weight per surface area within a range of from 0.4 to 1 kg/m, and a flow resistance within a range of from 10 to 40 kNs/m.

Sound absorbers

The present invention describes a device for the discontinuous manufacture of shaped composite articles and an appropriate process. The device comprises means (1) for the mixing of fibrous and/or granulated material with a thermoplastic and/or thermosetting binder, means (2) for conveying the mixture to a mat forming chamber (3), the mat forming chamber (3) being a sealed unit made of a lower half (4) and a movable upper half (5) comprising an outer hood and a rotatable drum (6) with a part template (7) having a perforated pattern of the desired article on the circumferential surface of the drum (6), means (8) to adjust the pressure at the surface of the drum (6) and providing a closed loop air circuit via the perforated pattern, skim rollers (9) for detection of the height of said articles, means (10) for the opening of the mat forming chamber (3) allowing the continuation of rotation and/or sucking during the movement of the drum (6) to a drop position (11), second means (12) for conveying the preformed article from drop position (11) to a molding and/or curing station (13).

Apparatus and method for discontinuous manufacture of shaped composite

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Waterford, Ireland

Colm Doris