Alois Gruber Gmbh

Chemiefaser Lenzing Aktiengesellschaft

Alfred Plammer

Johann Bloo

Bruno Mistlberger

Hermann Weiss

Johann Sch/o/ Nberger

Adolf Schachinger

An apparatus for the continuous and nondestructive production of plastic panels which are provided with undercut anchoring studs, web profiles or other forms of attachment () on one or both surfaces comprises a temperature-controlled chill roll (), which has peripheral cooling bores () in the roll body (). The roll body () is formed at the circumference as a polygon with flat supporting surfaces (), against which the molding/demolding strips () are placed or from which they are lifted. The molding/demolding strips () are moved by means of piston/cylinder arrangements () and piston rods (). The piston rods () move through transverse bores through the roll body (). The melt is filled into molds () of the molding/demolding strips () by the counterpressure between the shaping roll () and a counterroll () and is cooled down. During the filling of the molds (), the molding/demolding strips () are pressed against the flat faces of the roll body (). After cooling down, the plastic panel () produced, with anchoring studs () or other forms, is released in a nondestructive manner by opening the molding/demolding strips (). A plastic panel produced on such a calender () has undercut attachments (), which are formed integrally with the plastic panel ().

Apparatus for producing plastic panels with undercut

An apparatus for the continuous and nondestructive production of plastic panels which are provided with undercut anchoring studs, web profiles or other forms of attachments () on one or both surfaces comprises a temperature-controlled chill roll (), which has peripheral cooling bores () in the roll body (). The roll body () is formed at the circumference as a polygon with flat supporting surfaces (), against which the molding/demolding strips () are placed or from which they are lifted. The molding/demolding strips () are moved by means of piston/cylinder arrangements () and piston rods (). The piston rods () move through transverse bores through the roll body (). The melt is filled into molds () of the molding/demolding strips () by the counterpressure between the shaping roll () and a counterroll () and is cooled down. During the filling of the molds (), the molding/demolding strips () are pressed against the flat faces of the roll body (). After cooling down, the plastic panel () produced, with anchoring studs () or other forms, is released in a nondestructive manner by opening the molding/demolding strips (). A plastic panel produced on such a calender () has undercut attachments (), which are formed integrally with the plastic panel ().

Method and device for producing synthetic panels with undercut, one-piece extensions and a synthetic panel of this type

In a circular loom a reed and at least one shuttle are arranged between an upper and a lower running ring of a machine frame. A rotor driving the shuttle, a harness arranged in a concentric circle about the rotor for shedding the warp threads, and tensioning means for the warp threads also are provided. A wave-like extending groove is provided in the outer side of the rotor and catch elements engage therein. The catch elements are connected with flexible bands or cords carrying thread guiding organs arranged at a distance from one another. The bands or cords are deflected at least about upper deflection pulleys, the thread guiding organs coming to lie on opposite sides of the deflection pulley and the upper deflection pulley being at the height of the upper running ring. The distance between the upper and the lower running rings, as well as the maximum distance between the thread guiding organs at the deflected flexible band or cord, are dimensioned such that the shedding angle is sufficiently large to prevent a contact of the warp threads with the shuttle.

Growing community of inventors

Seewalchen, Austria

Alfred Plammer