| Patent Number |
Title Of Patent |
Date Issued |
| 6757065 |
Method of determining an illuminated surface |
June 29, 2004 |
| Method of determining a surface illuminated by incident light. First the intensity (I.sub.1 (x,y)) of light reflected from the surface is recorded in a first image of the surface. After this, the intensity (I.sub.2 (x,y)) of light reflected from the surface is recorded in a second image |
| 6615509 |
Apparatus and a process for drying a paper web |
September 9, 2003 |
| An apparatus for drying a fibre web of paper or paperboard is provided. The apparatus includes an adjustable heated press nip including at least one pressure device. The pressure device includes a roll, supporting one side of the web and at least two pressure shoes opposite the device an |
| 6147750 |
Determination of gloss quality |
November 14, 2000 |
| A method and apparatus for obtaining a basis on which the gloss quality of a sample surface of a sample, such as a paper sheet, can be determined by illuminating the sample surface and registering the intensity of the reflected light. With the intention of enabling several different type |
| 5908535 |
Method for determination of filler content in paper |
June 1, 1999 |
| A method of determining the filler content of paper, wherein the paper stock is examined prior to delivering the stock to the de-watering section of the paper machine, and wherein the volume concentration of particles in the stock that have a size which is greater than the characteristic |
| 5582684 |
Method of determining degree of reduction in a sulfate liquor using IR and UV spectroscopy |
December 10, 1996 |
| The invention relates to a method of determining the concentration of sulfide and optionally also of polysulfide in liquors and solutions of smelt deriving from the sulfate process. According to the method, the concentrations are determined by measuring the light absorption of the li |
| 5361638 |
Arrangement for measuring mechanical properties of a foil material through use of an excitation |
November 8, 1994 |
| An arrangement for measuring mechanical properties of foil material (10), preferably paper. The arrangement includes a material excitation unit (12) and a material sensing detection unit (14). The two units are connected electrically to a common arithmetical unit (18). This unit is inten |
| 5331405 |
Method and apparatus for measuring fibre flexibility |
July 19, 1994 |
| A method for measuring the flexibility of fibers, particularly cellulose fibres, in a flowing suspension. The fibre form of a large number of fibres is registered at two different pictures of suspension flow. A predefined fibre form is calculated for each flow picture, and a relation |
| 5274244 |
Method and apparatus for detecting bark and for determining the degree of barking on wood and ch |
December 28, 1993 |
| The present invention relates to a method and to an apparatus for detecting the presence of bark and for determining the barking degree of wood or chips. Accordingly, the apparatus includes a light source (12) which directs a concentrated light beam (14) onto the measurement object (16), |
| 5007985 |
Method of reducing the energy consumption at the refining of cellulose containing material |
April 16, 1991 |
| Method of reducing the energy consumption at the refining/beating of cellulose-containing material by the addition of alkali to the material for neutralizing acid groups bonded to the fibre wall. According to the invention, the pH-value in the pulp suspension is measured at the refiner |
| 4939929 |
Measurement of the properties of a web in paper production |
July 10, 1990 |
| Variations in the properties of a continuously running web are measured by reciprocating the scanning device across the web. The movement of the scanning device is so time controlled that this movement is out of phase with the variation in the paper properties in the machine direction of |
| 4911025 |
Method and apparatus for preparing a suspension for measurement |
March 27, 1990 |
| Method and apparatus for preparing a suspension for sample taking in a measurement section formed as a gap. The suspension provided with energy in a gap (10) immediately preceding the measurement section (11), which is enabled by the gap (10) being formed between a part (9) of a rotation |
