초록 ▼

Method for manufacturing paper or cardboard in one or more plies in order to achieve a paper or cardboard product with an even quality. The method comprises determining a fiber composition of a broke paper or cardboard waste broke, fractionating the broke; and conveying at least one fiber fraction o

Method for manufacturing paper or cardboard in one or more plies in order to achieve a paper or cardboard product with an even quality. The method comprises determining a fiber composition of a broke paper or cardboard waste broke, fractionating the broke; and conveying at least one fiber fraction obtained thereby to a given ply in the paper or cardboard. In this way the fractionating is controlled so that the fiber composition in the fiber fraction obtained corresponds to a fiber composition in the input paper pulp for the given ply.

대표청구항 ▼

Method for manufacturing paper or cardboard in one or more plies in order to achieve a paper or cardboard product with an even quality. The method comprises determining a fiber composition of a broke paper or cardboard waste broke, fractionating the broke; and conveying at least one fiber fraction o

Method for manufacturing paper or cardboard in one or more plies in order to achieve a paper or cardboard product with an even quality. The method comprises determining a fiber composition of a broke paper or cardboard waste broke, fractionating the broke; and conveying at least one fiber fraction obtained thereby to a given ply in the paper or cardboard. In this way the fractionating is controlled so that the fiber composition in the fiber fraction obtained corresponds to a fiber composition in the input paper pulp for the given ply. eating a sheet of material; positioning the sheet in proximity to a substrate in a mold; drawing a vacuum on the sheet to pull the sheet against the substrate; measuring the vacuum applied to the sheet; and repeating all of the previous steps for a subsequent sheet, and selectively altering said heating step in view of prior vacuum measurements taken from at least one of the previous sheets. 12. The process of claim 11 further comprising the step of measuring the temperature of at least one earlier sheet and wherein said adjusting step is further based on said measured temperature. 13. The process of claim 12 further comprising the step of comparing the measured temperature to a set temperature. 14. The process of claim 13 wherein the temperature comparing step is carried out by one from an operator and a processing unit. 15. The process of claim 13 further comprising the step of decreasing a parameter chosen from the level of vacuum, a period of heating time and a period of vacuum draw when the measured temperature is more than the set temperature. 16. The process of claim 13 further comprising the step of increasing a parameter chosen from the level of vacuum, a period of heating time, and a period of vacuum draw when the measured temperature is less than the set temperature. 17. The process of claim 13 further comprising the step of decreasing a parameter chosen from the period of heating time and the period of vacuum draw when the measured vacuum is more than the set vacuum. 18. The process of claim 13 further comprising the step of increasing a parameter chosen from the period of heating time and the period of vacuum draw when the measured vacuum is less than the set vacuum. 19. The process of claim 12 further comprising the step of comparing the measured vacuum to a set vacuum. 20. The process of claim 19 wherein the vacuum comparing step is carried out by one from an operator and a processing unit. 21. The process of claim 19 further comprising the step of increasing the vacuum level when the measured vacuum is less than the set vacuum. 22. The process of claim 19 further comprising the step of decreasing the vacuum level when the measured vacuum is more than the set vacuum. 23. A method for vacuum forming a sheet comprising the steps of: heating the sheet; placing the sheet in a vacuum mold; measuring the temperature of the sheet; vacuum drawing the sheet in the mold; and adjusting the vacuum drawing step as a function of the temperature of the sheet measured in said measuring step. 24. The process of claim 23 further comprising the step of measuring the vacuum drawn. 25. The process of claim 24 further comprising the step of comparing the measured temperature of the sheet to a preferred temperature. 26. The process of claim 25 further comprising the step of comparing the measured vacuum to a preferred vacuum. 27. The process of claim 26 wherein the vacuum comparing step is carried out by one from an operator and a processing unit. 28. The process of claim 25 wherein the temperature comparing step is carried out by one from an operator and a processing unit. 29. A vacuum forming process comprising the step of: positioning a sheet in proximity to a vacuum mold; heating the sheet; vacuum drawing the sheet in the mold with at least one vacuum level; measuring the vacuum drawn on the sheet; repeating the proceeding steps; and adjusting the heating step as a function of the vacuum measured on at least one previous sheet. 30. The process of claim 29 further comprising the step of comparing the measured vacuum to a set vacuum. 31. The process of claim 30 wherein said vacuum comparing step is carried out by one from an operator and the processing unit. 32. The process of claim 30 further comprising the step of increasing the vacuum level when the measured vacuum level is less than the set vacuum level. 33. The process of claim 30 further comprising the step of decreasing the vacuum level when the measu