Bruckner Maschinenbau Gmbh & Co. Kg

Bruckner Maschinenbau Gmbh

Tobias Häusl

Anthimos Giapoulis

Michael Baumeister

Markus Unterreiner

Emmerich Kulinyak

Georg Murner

Werner Bamberger

Martin Swoboda

Wolfram Aumeier

Sebastian Kraus

An improved nozzle box is disclosed having side walls spaced apart from each other, a base and a ventilation wall spaced apart from it, thereby forming an interior space. A plurality of ventilation openings arranged offset to each other is provided in the ventilation wall, the nozzle box is provided on its ventilation wall with a plurality of protrusions that are raised by at least a height (H) in relation to the sections of ventilation wall or the top side or surface of the ventilation wall the sections being located adjacent to the protrusions, the ventilation openings are configured raised in the region of the protrusions in relation to the top side or surface of the ventilation wall and/or the ventilation wall includes in the transverse direction (Q) of the nozzle box opposing side flanges that overlap the side walls of the nozzle box outside the interior space of the nozzle box.

Nozzle box as well as a stretching unit comprising a corresponding nozzle box

The invention relates to a ventilation module for a film stretching system at least one first outlet nozzle arrangement having an outlet nozzle, wherein the at least one outlet nozzle extends with its longitudinal direction transverse or perpendicular to the withdrawal direction of a plastic film web and is oriented in parallel to the transport plane. A first return system is provided with at least two extraction channels, each having an intake region. The at least two intake regions are spaced apart from one another in the withdrawal direction and oriented in parallel to the transport plane. The at least one outlet nozzle of the at least one first outlet nozzle arrangement is arranged between the first and the second intake region. The at least two intake regions are arranged exclusively before and/or after the at least one first outlet nozzle arrangement in the withdrawal direction of the plastic film web.

Ventilation module for a film stretching system and film stretching system of this type

The invention relates to a sliding element, in particular for a stretching installation and/or a conveyor chain, comprising graphite or electrographite, wherein the sliding element has pores which have an open pore size of &#x2265;7.5% by volume, and wherein the particle size of the graphite particles used as a starting material for the sliding elements is between 3 &#x3bc;m and 15 &#x3bc;m.

Sliding element, in particular for a stretching installation and/or conveyor chain, and associated stretching installation or conveyor chain

An improved guide rail in particular for a transport device or stretching unit is distinguished inter alia by the following features&#x2014;the cooling device comprises at least one cooling duct which extends in a zigzag shape inside the guide rail and which is formed by connected transverse bores, and/or&#x2014;the guide rail comprises at least two half-shells or halves between which a flexible tube is arranged in a sandwich-like manner to form at least one cooling duct, and/or&#x2014;at least one cooling duct is arranged outside the guide rail so as to extend parallel thereto, and, in the longitudinal direction of the guide rail, in each case bores extending transversely thereto are made, into which bores outwardly projecting heat lines and/or heat pipes are inserted.

Lateral guide rail for a transport system, in particular a stretching unit

The invention relates to an improved transport system, in particular for a stretching system, characterized amongst other things, by the following characteristics: a support rail and/or a guide rail, over which a conveyor chain with clip chain units can be displaced, are provided, said units subdividing into a clip part and a chain part, said support rail or the guide rail or the support rail and the guide rail is/are provided with a channel which transverses in the longitudinal direction at least in one of the partial lengths of the support rail and the guide rail. The support rail running surface comprises a plurality of outlet openings through which the compressed air can be guided on the channel for generating an airbag between the support rail running surface and an air bearing cushion plate on the clip-chain unit and/or the running rail running surfaces comprise a plurality of outlet openings through which the compressed air can be guided on the channel by generating an air bag between the respective guide rail running surfaces and a bearing device on the clip chain unit.

Transport system, in particular transverse stretching systems

The invention relates to an improved stretching unit characterized, amongst other things by the following: the clip-chain unit is designed such that the forces which are exerted are decoupled and applied in a tilting-free and torque-free manner to the clip-chain unit in order to prevent an increase of the surface pressure between the clip-chain unit and the supporting rail.

Growing community of inventors

Traunstein, Germany

Tobias Häusl