摘要:
A web-type composite intermediate is formed from fibers and plastic. The composite intermediate is formed by wet web formation from a substantially homogeneous liquid mixture which contains natural fibers, plastic particles having a diameter of less than approximately 1000 μm, and an agent that improves compatibility between natural fibers and plastic particles. In addition, a method for forming a composite intermediate and the use of the composite intermediate are also described.
摘要:
The invention relates to a novel gas filter structure, a filtering method and a method of producing the filter structure. The structure according to the invention comprises a planar, porous isolation material layer (12) having two opposing surfaces. According to the invention both surfaces of the isolation material layer (12) comprise a porous conductive layer (14, 16) comprising a porous filtering matrix treated with a conductive material. The conductive material consists of a material different from the support matrix. By means of the conductive layers it is possible to create in the isolation material an electric field that considerably improves the filtering efficiency of the isolation material, especially for small particles.
摘要:
A microstructure area (201) providing a first diffractive visual effect is produced on the surface layer (240) of a paper or cardboard substrate (230) of a product (200). In addition, a bulge (206) or a recess (207) having a second microstructure area (202) is produced on the surface layer (240), wherein a doubly curved portion (203) is located between the first (201) and the second (202) microstructure areas. Said combination of the bulge (206)/recess (207), microstructure areas (201, 202) and doubly curved portion (203) makes counterfeiting of the product (200) difficult and provides a special visual effect.
摘要:
A method for manufacturing cellulosic material includes: introducing cellulose fibers as cellulosic raw material to a system, conveying the cellulose fibers to an extruder comprising a mixing part and/or a refining part, dosing at least one chemical to the system before the extruder and/or in the extruder and performing a reaction between the cellulose fibers and the chemical(s) at least partly in the extruder, wherein the reaction is performed at a consistency of at least 40%, and/or dosing at least one chemical to the system before the extruder and/or in the extruder and mixing the cellulose fibers and the chemical(s) in the mixing part of the extruder, wherein the mixing step is performed at a consistency of at least 40%, and/or refining the introduced cellulose fibers at least partly in the refining part of the extruder, wherein the refining step is performed at a consistency of at least 5%.
摘要:
A web-type composite intermediate is formed from fibers and plastic. The composite intermediate is formed by wet web formation from a substantially homogeneous liquid mixture which contains natural fibers, plastic particles having a diameter of less than approximately 1000 μm, and an agent that improves compatibility between natural fibers and plastic particles. In addition, a method for forming a composite intermediate and the use of the composite intermediate are also described.
摘要:
A method for preparing aqueous furnish to be used in paper or paper board manufacturing. Filler and/or fibers are treated with cationic polyelectrolyte and nanofibrillated cellulose. A furnish and a paper or a paper board.
摘要:
The invention relates to an electrical and/or optical temperature detector/indicator based on conductive polymers, said detector/indicator being suitably used in such packages for products, the temperature changes of which need to be monitored.
摘要:
The invention relates to an electrical and/or optical temperature detector/indicator based on conductive polymers, said detector/indicator being suitably used in such packages for products, the temperature changes of which need to be monitored.
摘要:
The invention relates to a method for manufacturing a composite product comprising organic natural fiber material and matrix material, wherein the method comprises mixing the organic natural fiber material with the matrix material in a primary mixing stage to form a mixture. The primary mixing stage comprises a contacting step in which the organic natural fiber material comes in contact with the matrix material that is at least partly in a form of melt, and compression ratio of the organic natural fiber material is less than 8. The method further comprises forming a composite product comprising the mixture. Further, the invention relates to a composite product, a use of the composite product, and a system for manufacturing a composite product.
摘要:
The invention relates to a composite product. According to the invention, the composite product contains a polymer based material and an organic natural fiber material, and the organic natural fiber material has a form, and the form of fibers of the organic natural fiber material is a flake, and the organic natural fiber material in the form of the flakes has been mixed with the polymer based material. Further, the invention relates to a method for manufacturing a composite product, a material component, a use of a composite product and a final product.