Food or edible material: processes – compositions – and products – Measuring – testing – or controlling by inanimate means
Patent
1995-03-24
1998-02-03
Yeung, George
Food or edible material: processes, compositions, and products
Measuring, testing, or controlling by inanimate means
264 401, 425144, 425149, 426516, A23N 1700, A23P 100
Patent
active
057141878
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to a process for controlling the quality of a feedstuff product which is kneaded and formed under pressure.
2. Discussion of the Background of the Invention and Material Information
A device of this type is known from the European Patent Application with the Publication Number 0 428 978 A1 which is also assigned to the assignee of this invention.
Measures are primarily described therein in order firstly to obtain moldings or formed feedstuff products which are better than those obtained in the prior art referred to therein, and secondly to fashion parts subject to wear so that these pans subject to wear can be replaced efficiently and economically.
The underlying object of this invention is to fashion a device of this type so that means are provided in order to match the state and/or the properties of the product to predetermined values.
SUMMARY OF THE INVENTION
Means are proposed according to the invention in order to achieve this object. In principle, the aforementioned EP 0 428 978 A1 forms an integral component of this invention.
Specifically, this invention pertains to a process for controlling the quality of a feedstuff product which is kneaded and formed under pressure in at least one device for producing the feedstuff product, the process comprising: measuring at least one of the following properties of the final feedstuff product, and, depending on the degree of the deviations of the feedstuff product outside a predetermined set value range and; altering the adjustment parameters on the at least one device producing the feedstuff product until the properties fall within the set value range, wherein the properties include:
The process of this invention includes measuring the properties in a laboratory; and measuring the properties both on-line and automatically after the entering of the feedstuff product from the at least one device for producing the feedstuff product.
The process of this invention also includes altering of the adjustment parameters by manual alterations, based upon the indication of the adjustment parameters, by the "trial and error" principle; and automatically altering of the adjustment parameters, based on an empirically determined and statistically evaluated recipe. Preferably, the process also includes measuring the abrasion resistance by means of an abrasion apparatus.
In another embodiment of the process of this invention, the at least one device includes a screw extruder or an expander, and wherein the adjustment parameters comprise at least one of the following possible adjustments: the one of the screw extruder and expander and/or into a feeder device for the feedstuff input product; screw extruder and expander; the feedstuff product, in order to heat the feedstuff product situated in one of the screw extruder and expander;
adjustment of the feedstuff product length. Preferably, the at least one device includes a pellet press, with an additional adjustment parameter on the pellet press being the distance between rolls and a mold thereof.
A further embodiment of the process of this invention includes electro-optically measuring at least one of the following properties by means of wavelengths which lie in the proximity of the infrared region, the properties including:
protein content of the feedstuff product. Preferably this embodiment also includes making the measuring on one of diverted portions and continuously on-line, as well as cooling the product to be measured.
This invention also pertains to a screw extruder or expander for carrying out a process of this invention wherein the screw extruder or expander includes a kneading and compaction screw disposed in a housing so the it can be rotatably driven; and an extrusion head attached to the housing, wherein the feedstuff product can be extruded into a predetermined shape, with the extrusion head including: a back-pressure element; and an annular body, with the annular body adjoining the housing and at least partially surrounding the back-p
REFERENCES:
patent: 3255220 (1966-06-01), Baer et al.
patent: 4700310 (1987-10-01), Volk, Jr.
patent: 4700622 (1987-10-01), Satake
patent: 4721448 (1988-01-01), Irish et al.
patent: 4725958 (1988-02-01), Volk, Jr.
patent: 4742463 (1988-05-01), Volk, Jr.
patent: 4764874 (1988-08-01), Volk, Jr.
patent: 4767301 (1988-08-01), Volk, Jr.
patent: 4779970 (1988-10-01), Irish et al.
patent: 4882105 (1989-11-01), Volk, Jr.
patent: 5271728 (1993-12-01), Froidevaux et al.
Brochure, in the German language pertaining to the quality control system NIRVIS.
Brochure, in the German language pertaining to a pellet press KUBEX.
Brochure, in the German language pertaining to the quality control system NIRDAS.
Froidevaux Pierre Alain
Rutishauser Stefan
Wetzel Willi
Buhler AG
Yeung George
LandOfFree
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