Method and device for determining a layer property of a layer in an extrusion process
AssigneeINOEX GmbH
InventorChristoph Nerling
Life of this patent
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Abstract
Method for determining at least one layer property of a layer to be determined, in particular a foam layer, in an extrusion process, where a supply material is at least partially foamed and an extrusion product with the foam layer is put out (in other words, is output). The method has at least the steps of irradiating the extrusion product using electro-magnetic radiation, and electro-magnetically measuring at least one radiation having travelled through the foam layer. Measuring at least one feed-in rate or feed-in volume of the supply material, and determining the at least one material property of the layer to be determined from the measured feed-in volume and the electro-magnetic measurement.
Claims14
A method for determining at least one layer property of a layer to be determined regarding at least one property thereof in an extrusion process, whereby a supply material is mixed or superimposed at least in part and an extrusion, product with the layer to be determined is output, the method comprising at least the following steps:
- a) irradiation of the extrusion product using electro-magnetic radiation;
- b) electro-magnetic measuring of at least one radiation having travelled through the layer to be determined;
- c) carrying out a reflection measurement on at least one boundary layer of the extrusion product;
- d) measuring at least one feed-in rate and/or feed-in volume of the supply material;
- e) determining at least one layer property of the layer to be determined from the measured at least one feed-in rate and/or feed-in volume and the electro-magnetic measurement;
- and
- f) in the extrusion process the extrusion product is made of a plastics material and the at least one layer to be determined is made of mixed plastics comprising at least two substances.
A method for determining at least one layer property of a layer to be determined regarding at least one property thereof in an extrusion process, whereby a supply material is mixed or superimposed at least in part and an extrusion product with the layer to be determined is output, the method comprising at least the following steps:
- a) irradiation of the extrusion product using electro-magnetic radiation;
- b) electro-magnetic measuring of at least one radiation having travelled through the layer to be determined;
- c) carrying out a reflection measurement on at least one boundary layer of the extrusion product;
- d) measuring at least one feed-in rate and/or feed-in volume of the supply material;
- and
- e) determining at least one layer property of the layer to be determined from the measured at least one feed-in rate and/or feed-in volume and the electro-magnetic measurement;
- and
- f) the electro-magnetic radiation is Terahertz radiation in a frequency range between 0.01 and 50 THz.
A method for determining at least one layer property of a layer to be determined regarding at least one property thereof in an extrusion process, whereby a supply material is mixed or superimposed at least in part and an extrusion product with the layer to be determined is output, the method comprising at least the following steps:
- a) irradiation of the extrusion product using electro-magnetic radiation;
- h) electro-magnetic measuring of at least one radiation having travelled through the layer to be determined;
- c) carrying out a reflection measurement on at least one boundary layer of the extrusion product;
- d) measuring at least one feed-in rate and/or feed-in volume of the supply material;
- and
- e) determining at least one layer property of the layer to be determined from the measured at least one feed-in rate and/or feed-in volume and the electro-magnetic measurement;
- and
- f) the feed-in rate is measured gravimetrically and/or involving measurement of a supply mass per time and/or involving measurement of a supply volume per time.
A method for determining at least one layer property of a layer to be determined regarding at least one property thereof in an extrusion process, whereby a supply material is mixed or superimposed at least in part and an extrusion product with the layer to be determined is output, the method comprising at least the following steps:
- a) irradiation of the extrusion product using electro-magnetic radiation;
- g) electro-magnetic measuring of at least one radiation having travelled through the layer to be determined;
- c) carrying out a reflection measurement on at least one boundary layer of the extrusion product;
- d) measuring at least one feed-in rate and/or feed-in volume of the supply material;
- and
- e) determining at least one layer property off the layer to be determined from the measured at least one feed-in rate and/or feed-in volume and the electro-magnetic measurement;
- and
- f) as layer property of the mixed layer, a refraction index and a wall thickness is determined.
Dependencies are inferred from the claim text.