In one embodiment, an apparatus and a method of manufacturing a paperboard tray therewith is provided. In particular, a hub is configured to rotate about a shaft. On the hub, a plurality of first molds are formed in the hub. Conversely, a plurality of second molds are each disposed above each of the plurality of first molds respectively and rotate above the first molds. In this configuration, the plurality of second molds are configured to move in unison with the plurality of first molds as the hub and second molds rotate and to move orthogonally towards and then away from the first molds as the second molds rotate.

The invention relates to a method for the production of form parts from multi-component reactive plastic material, especially from polyurethane, wherein a plurality of moulds are moved by means of mould carriages (1) at least temporarily along a closed, preferably oval, production line (2). To allow a simple and quick import and export of mould carriages in the respectively out of the production line the invention proposes that the mould carriages (1) are provided with rolls (3) and are moved on a stationary ground (4) by the same and that a plurality of supply carriages (6) are arranged along the closed production line (2) at a conveying element (5), which supply carriages (6) are moved by means of the conveying elements (5), wherein a mould carriage (1) is approached to a not occupied supply carriage (6) and is coupled with the same to introduce the mould carriage (1) into the production line (2), wherein for the movement along the production line (2) the mould carriage (1) is guided and moved by the supply carriage (6) in a coupled state between the mould carriage (1) and the supply carriage (6) and wherein the mould carriage (1) is decoupled from the supply carriage (6) and is moved away from the production line (2) for taking the mould carriage (1) out of the production line (2), wherein here the mould carriage (1) is moved with its roils (3) on the stationary ground (4). Furthermore, the invention relates to a respective device.

The invention relates to a method for the production of form parts from multi-component reactive plastic material, especially from polyurethane, wherein a plurality of moulds are moved by means of mould carriages (1) at least temporarily along a closed, preferably oval, production line (2). To allow a simple and quick import and export of mould carriages in the respectively out of the production line the invention proposes that the mould carriages (1) are provided with rolls (3) and are moved on a stationary ground (4) by the same and that a plurality of supply carriages (6) are arranged along the closed production line (2) at a conveying element (5), which supply carriages (6) are moved by means of the conveying elements (5), wherein a mould carriage (1) is approached to a not occupied supply carriage (6) and is coupled with the same to introduce the mould carriage (1) into the production line (2), wherein for the movement along the production line (2) the mould carriage (1) is guided and moved by the supply carriage (6) in a coupled state between the mould carriage (1) and the supply carriage (6) and wherein the mould carriage (1) is decoupled from the supply carriage (6) and is moved away from the production line (2) for taking the mould carriage (1) out of the production line (2), wherein here the mould carriage (1) is moved with its roils (3) on the stationary ground (4). Furthermore, the invention relates to a respective device.

Pipe corrugators having opposed series of pushed mold blocks forming a moving mold tunnel are subject to significant thermal expansion and are designed with a thermal expansion gap. The present invention provides a method and apparatus for measuring changes in this expansion gap and preferably recognizing potential thermal issues before serious problems occur. A sensor is provided adjacent a mold block drive that preferably detects a time duration between sensing a trailing portion of a lead mold block and a leading edge of a following mold block separated from the lead mold block by the thermal expansion gap. This time duration in combination with a speed of the pushed mold blocks is used to calculate the size of the thermal expansion gap.

In order to provide a manufacturing method of an elongated foam sheet capable of manufacturing the elongated foam sheet with highly-precise thickness without being limited by the material and thickness of foam material, a method of manufacturing an elongated foam sheet includes performing a slice process in which a foam sheet is created by slicing a foam block and a sheet pasting process in which a large number of foam sheets are arranged and pasted onto one side of an elongated base material sheet to manufacture the elongated foam sheet where the large number of foam sheets are lined up in a longitudinal direction of the base material sheet.

In order to provide a manufacturing method of an elongated foam sheet capable of manufacturing the elongated foam sheet with highly-precise thickness without being limited by the material and thickness of foam material, a method of manufacturing an elongated foam sheet includes performing a slice process in which a foam sheet is created by slicing a foam block and a sheet pasting process in which a large number of foam sheets are arranged and pasted onto one side of an elongated base material sheet to manufacture the elongated foam sheet where the large number of foam sheets are lined up in a longitudinal direction of the base material sheet.