TH33385C3 - A process control method for the production of cellulose-containing products - Google Patents

Abstract

DC60 (23/04/55) Process control method for the manufacture of cellulose-containing products, during which at least two substances have a significant influence on the homogeneous properties of the said products. Then, in coherence with the relationships between them, are added to the process, here a calibration model is built by linking the values of the properties for reference. And corresponding reference relationships by mathematical functions And that method will Included Using a calibration model on a true relationship to predict To the value of the treasure By comparing the values of the predicted properties with that of the target properties. Desired and if the predicted value mentioned above is not significantly equal to the target value. As mentioned The true correlation will be adjusted according to the predetermined method and will be repeated according to these operations until the foresaid predicted values are equal. Significantly with the target values mentioned above Process control methods for the production of cellulose-containing products, during which at least two substances have a great influence on the homogeneous properties of the said products. In accordance with the relationship between them, they are added to the process, whereby a calibration set is created by associating the values of the properties for reference. And the corresponding reference relations by using mathematical functions And that method will Included Using sets for calibration on a true relationship In order to predict To the word of the treasure By comparing the predicted value of the predicted property with the desired target value, if the predicted value was not truly equal to the target value As mentioned The true correlation will be adjusted according to the predetermined method and will be repeated according to these operations until the foresaid predicted values are equal. Truly with the target values mentioned above

Claims (8)

1.Process control methods for producing cellulose-containing products from cellulose-containing raw materials During the process, at least two different substances were added. Will have a significant influence on the same properties of the above products. In consistency And the relationship between the substances mentioned above Which has the characteristics that Calibration model Will have been built By means of which include Associating values for known references For the properties of the products mentioned above And relationship For a known reference Between substances By using mathematical functions And the peculiarities that the method includes the steps of i) the use of a calibration model on the intrinsic relationships between substances in order to predict the values for the properties of the aforementioned products; ii) Comparing the predicted values for the properties of the aforementioned products. Then with the target value required for the properties of the aforementioned products and if the predicted value as mentioned above is not significantly equal to the target value mentioned. The true correlation between substances is adjusted in a predetermined method. Iii) Repetition of steps I and II until the foretold predicted values are equal. Are significantly combined with the target values mentioned above 2. Method for claim 1, which has the characteristics that The calibration model is given Generation based on multivariate analysis 3. Method according to claim 2, which has the characteristics that The multivariate analysis results in Been promoted from Analysis of the main components The partial least squares regression value and the regression value for the main component 4. The method of claim 1, which has the characteristics that Products containing cellulose fibers are Wooden panel 5. Method according to claim 4, which has the characteristics that That non-wooden radiance It consists of two layers and one substance is significantly added during those stages. 6. Methods according to claim 4 or 5, which are characterized by that One substance will be added to To be contained in one of those classes significantly. 7. The method of claim 4, which has the characteristics that The wooden panel, then the wood plate. 8. Method according to claim 7, which has the characteristics that That wood is veneer. 9. Method of claim 1, which has the characteristics that Each substance is an amino-based adhesive. The resins, wherein they differ when considering the amount of formaldehyde 1 0. The method of claim 1, which is characterized by that The properties of the aforementioned products are primitive density of density. Internal bond strength, thickness expansion, absorption value, permeability value, porosity value, rupture modulus, VOC elastic modulus or diffusion value. Number 1 1. Method for claim 1, which has the characteristics that Two substances have a significant influence. Important to the properties mentioned above In accordance with the amount of the substance being mixed that has been added And the calibration model involves associating the known values mentioned above. For the properties of the products mentioned above With the amount of mixed substance with known corresponding values. That has been filled And the corresponding relationship between the substances in the above quantities, and the characteristics that the use of the calibration model relate to the Between substances And the corresponding relationship between substances in the above quantities in order to Anticipate the intrinsic values for the properties of the aforementioned products 1 2. Method of claim 1, which is characterized by that The calibration model will get Been built By means of which include Raw material analysis for reference By using the method For that analysis In order to provide sample data for reference. And link sample data For the reference mentioned above With known values for the properties of the products mentioned above. And the corresponding known relationship between substances By using the mathematical functions mentioned above and the peculiarities that the method of addition is included. Raw material analysis procedure By relying on the analysis methods mentioned above In order to provide sample data And characteristics that That the implementation of the calibration model It involves linking sample data with Relationship between substances In order to predict the true values for the properties of the aforementioned products 1 3. The method of claim 12, which is characterized by that The sample data will be transferred. Enter the panel variable Before it gets linked to the target value And the characteristics that the sample data For reference, it will be transmitted into the latent variable. Before being coupled to a known value Value already mentioned 1 4. Method for claim 12, which has the characteristics that The method of analysis is a method. Spectrum measurement form 1 5. Method according to claim 14, which has the characteristics that Use sample data as well as information. The reference sample will be processed in order to reduce the noise and it will be adjusted to Diffused and diffused light 1 6. Method for Claim 14, which has the characteristics that The method of measuring the spectrum is that Spectral measurement methods for absorption, reflection, diffusion, or transmission 1. 7. Method for claim 14, which has the characteristics that The method of measuring the spectrum is that NIR 1 spectral measurement method 8. Method for claim 15, which has the characteristics that Products containing cellulose fibers that have been produced are The veneer that is assembled with One core layer and two surface layers, whereby the raw materials containing cellulose fibers Will be included Sawdust, Cutting Scraps, Chunks or Residues from Wood Cutting Or a combination of these Product properties Density, density beauty profile Internal bond strength Thick expansion, adsorption value, permeability, porosity or chamber diffusion values of these substances. Is the glue obtained From the mix of Formaldehyde, urea, and other suitable components may be chosen, and those adhesives differ when considering the ratio between formaldehyde and urea. Grip in the ratio between Formaldehyde And urea higher than the second type of glue