摘要:
The invention relates to a method for directly or indirectly applying a liquid or pasty application medium (2) onto one or both sides of a continuous surface (4), wherein the application medium (2) is applied to the surface (4) in a plurality of single application regions by means of a plurality of single application nozzles (12) spaced apart from one another side by side and/or in succession in the direction of width (B) and/or longitudinal direction of the surface (4) and clearly distanced (D) from the surface (4), the application medium (2) emerging from each of these nozzles, wherein adjacent single application regions each intersect (U) at least in part in their respective edge regions, causing a layer of application medium to be produced across substantially the entire width (B) of the surface (4) to be coated. The invention also relates to an apparatus for performing this method.
摘要:
The invention relates to a method for directly or indirectly applying a liquid or pasty application medium (2) onto one or both sides of a continuous surface (4), wherein the application medium (2) is applied to the surface (4) in a plurality of single application regions by means of a plurality of single application nozzles (12) spaced apart from one another side by side and/or in succession in the direction of width (B) and/or longitudinal direction of the surface (4) and clearly distanced (D) from the surface (4), the application medium (2) emerging from each of these nozzles, wherein adjacent single application regions each intersect (U) at least in part in their respective edge regions, causing a layer of application medium to be produced across substantially the entire width (B) of the surface (4) to be coated. The invention also relates to an apparatus for performing this method.
摘要:
The invention relates to a method for directly or indirectly applying a liquid or pasty application medium (2) onto one or both sides of a continuous surface (4), wherein the application medium (2) is applied to the surface (4) in a plurality of single application regions by means of a plurality of single application nozzles (12) spaced apart from one another side by side and/or in succession in the direction of width (B) and/or longitudinal direction of the surface (4) and clearly distanced (D) from the surface (4), the application medium (2) emerging from each of these nozzles, wherein adjacent single application regions each intersect (U) at least in part in their respective edge regions, causing a layer of application medium to be produced across substantially the entire width (B) of the surface (4) to be coated. The invention also relates to an apparatus for performing this method.
摘要:
A device for direct or indirect application of liquid or viscous coating medium by way of an application system onto a material web, especially a paper or cardboard web, including a weakening device for weakening the boundary layer of air that is carried along by the application surface. The weakening device is located prior to the applicator device viewed in direction of travel of the application surface. The weakening device includes a blowing device and a suction device. The blowing device is located prior to the applicator device when viewed in direction of travel of the application surface and produces an air flow in opposite direction to the direction of travel. The suction device is located prior to the blowing device when viewed in direction of travel of the application surface and sucks off at least a portion of the air flow that is produced by the blowing device, as well as at least a portion of the boundary layer of air that is carried along by the application surface.
摘要:
A method for operating a machine for single or double sided application of a liquid or viscous coating medium by way of at least one applicator unit onto the surface of a mating material web, especially a paper or cardboard web is provided. The coating medium collecting unit is cleaned prior to, during or after an application process of the machine, by way of supplying cleaning liquid via the supply line. The valve arrangement can be switched to the second valve condition for clean-up and to the third valve condition for the collection of coating medium in the medium collecting device. The medium collecting unit can be cleaned after start of the application process, during coating, through elements of supplying cleaning liquid via the supply line.
摘要:
The present invention provides a doctor device for metering and/or equalizing a liquid-to-pasty medium applied to a running surface, wherein in the case of direct application the surface is a running paper web, paperboard web or other fibrous web and in the case of indirect application a transfer element which transfers the application medium to the fibrous web. The doctor device has a holder arranged on a support beam for accommodating a doctor element used for the metering and/or equalizing. The holder has a first fixed support face bar and a second moving support face bar, wherein to open and close the holder the second support face bar is displaceable respectively away from the first support face bar or toward it such that in the closed state of the holder the doctor element is fixed from the outside and in the open state of the holder it is released.
摘要:
A machine for single or double sided application of a liquid or viscous coating medium by way of at least one applicator unit onto the surface of a mating material web, especially a paper or cardboard web. A medium collecting device that is allocated to the applicator unit or to a dispensing component of the applicator unit which includes the dispensing openings, is equipped with a receiving and release component which is allocated to the medium collecting device and which is or can be mounted detachably on same. During the start of the application process the component releases the curtain or veil due to a common adjustment with the medium collecting device or of a section component of same relative to the curtain or veil from a rim extending across the moving background or from an edge extending across the moving background.
摘要:
The invention relates to a method for applying a multiple layer directly to a paper, board or other moving web of fibrous material during the production and/or finishing thereof, the individual layers of the multiple layer being formed of a plurality of liquid to pasty application media or liquid streams (Q1-Qn), in particular aqueous pigment suspensions. The individual application media or liquid streams (Q1-Qn) are discharged onto the fibrous web without respective previous drying, without excess quantities, without mixing with one another, and without contact. The application medium which has a lower specific weight (p1 to pn) and/or a lower viscosity (η1 to ηn) and/or a lower surface tension (δ1 to δn) than the next following application medium or the next following layer is applied to an application medium or a layer having a higher specific weight (p1 to pn) and/or a higher viscosity (η1 to ηn) and/or a higher surface tension (δ1 to δn), so that on the fibrous web the first layer or underlayer is that application medium which has the highest values and the top layer is that application medium which has the lowest values.
摘要翻译:本发明涉及在生产和/或整理期间将多层直接施加到纸,纸板或其它移动的纤维材料纤维网上的方法,所述多层的各层由多个液体到糊状应用形成 介质或液体流(Q 1 -Q N n),特别是水性颜料悬浮液。 单独的施用介质或液体流(Q 1 -Q N n N)被排出到纤维幅材上,而不用先前的干燥而没有多余的量,而不会彼此混合,以及 没有联系。 具有较低比重(p <1> sub>至p n n n)的应用介质和/或较低粘度(eta <1> sub> eta 和/或比下一个下一个施加介质的下表面张力(δ1 SUB)到下一个下一层应用于 应用介质或具有较高比重(p> 1至p n n n)的层和/或较高的粘度(ηη1 / 和/或较高的表面张力(ΔL1至N 3),使得在纤维网上,第一层或下层是该纤维网 具有最高值的应用介质和顶层是具有最低值的应用介质。
摘要:
A gravure paper and a method of manufacturing gravure paper having a maximal roughness depth of approximately 1.40 &mgr;m. The method utilizes a paper machine including a forming system, a first press section, and a drying section, and includes producing a stock suspension including a stock having a freeness of greater than or equal to approximately 50 ml CSF, forming an unfinished fibrous material web from the stock suspension, and applying at least one of a pigment and a filler slurry to the unfinished fibrous material web between a beginning of the forming system and a position at which the dry matter content of the unfinished fibrous material web is approximately ≦90%.