摘要:
The invention relates to a use of a strength composition for increasing wet dimensional stability of a moulded pulp article. The moulded pulp article is produced by a method which comprises obtaining a fibre slurry and feeding it to a forming tank of a moulding apparatus, forming a moulded pulp article from the fibre slurry, and drying the moulded pulp article. The strength composition comprises at least one permanent wet strength resin and the strength composition is added to the fibre slurry before the forming of the moulded pulp article.
摘要:
Die Erfindung betrifft ein Gewebeband auf dem bei bestimmungsgemäßer Verwendung in einer Maschine zur Herstellung von Spinnvliesbahnen solche Spinnvliesbahnen geformt und transportiert werden, umfassend eine Mehrzahl von im Wesentlichen in einer Bandlängsrichtung (L) verlaufenden Längsfäden (12) und eine Mehrzahl von im Wesentlichen in einer Bandquerrichtung verlaufenden und mit den Längsfäden (12) abbindenden Querfäden (14, 14'), wobei die Längs- und die Querfäden im Wesentlichen aus einem Polymermaterial aufgebaut sind und ein Teil der Längs- und/oder der Querfäden (14') elektrisch leitendes Material umfasst, wobei Längsfäden (12) an der Bahnmaterialkontaktseite konvexe Längsfadenkröpfungen mit einem Scheitelpunkt ausbilden sowie die Querfäden erste Querfäden (14) umfassen, die an der Bahnmaterialkontaktseite konvexe erste Querfadenkröpfungen mit einem Scheitelpunkt ausbilden. Die Erfindung ist dadurch gekennzeichnet, dass der Höhenunterschied zwischen den Scheitelpunkten zumindest einiger der konvexen Längsfadenkröpfungen und den Scheitelpunkten zumindest einiger der ersten konvexen Querfadenkröpfungen an der Bahnmaterialkontaktseite kleiner als 220μm, bevorzugt kleiner als 180μm, besonders bevorzugt kleiner als 150μm ist.
摘要:
A hydrolysis resistant aqueous emulsion includes a hydrolyzable silicon containing compound. This emulsion is formed by a method that includes the step of (A) forming a seed emulsion that includes (1) an emulsifier, (2) water, and (3) a first oil phase. The method also includes the step of (B) adding a second oil phase, including a hydrolyzable silicon containing compound, to the seed emulsion. A weight ratio of the second oil phase including the hydrolyzable silicon containing compound to the first oil phase in the seed emulsion is from 0.5 to 50. Moreover, a total weight of the first and second oil phases in the emulsion is at least 60 weight percent.
摘要:
Embodiments of the present description provide methods for increasing the concentration of carboxymethylcellulose alkali solutions that are particularly suitable for use in a high solids paper coating, barrier materials, etc. Generally described, the method includes dissolving carboxymethylcellulose (CMC) and an alkali salt in water to obtain an alkali solution of CMC. The CMC desirably has a degree of substitution less than about 0.9. The alkali solution of CMC includes CMC in a concentration greater than about 9.8 % by weight, has a pH from about 7.5 to about 11, and is characterized as having a viscosity of less than about 5,000 mPa.
摘要:
A paperboard substrate that can be used to provide a food packaging particle is provided having a water vapor barrier layer comprising HDPE in combination with a nucleating agent which is extruded on to a paperboard substrate. The resulting substrate has sufficiently good water vapor barrier when properties that dry foods such as cereals do not require a bag or inner liner as a separate moisture barrier.
摘要:
A paperboard substrate that can be used to provide a food packaging particle is provided having a water vapor barrier layer comprising HDPE in combination with a nucleating agent which is extruded on to a paperboard substrate. The resulting substrate has sufficiently good water vapor barrier when properties that dry foods such as cereals do not require a bag or inner liner as a separate moisture barrier.
摘要:
The present invention provides a method of powder coating a heat-sensitive item having an edge, which includes sealing the edge against moisture loss from the item, applying powder to a surface of the item, and curing the powder. The present invention also provides another method of powder coating a heat-sensitive item, the method including applying a powder to a surface of the item, heating the surface in a melting stage for between about 60 seconds and about 90 seconds such that the surface has a surface temperature that reaches a maximum that is above a curing temperature to melt the powder, and heating the surface in a curing stage to maintain the surface temperature at the curing temperature for between about 120 seconds and about 180 seconds to cure the powder.
摘要:
An acoustical panel is made by applying a thin, acoustically- transparent coating to an acoustical base mat. A pulp is made from one or more fillers, a fibrous filler, a binder and water. A thickener solution is prepared from a thickener and water. A portion of the pulp and the thickener solution are mixed under high shear conditions to degrade the fibrous filler and form a smooth coating. The coating is applied to and distributed over a base mat and the coated base mat is then cut and dried to form a coated acoustical panel. The panel is free of visible mineral nodules on the surface of the coating. Optionally, the pulp is a portion of a pulp used to make the base mat. Other embodiments include the use of recycled dust or fine particles of the acoustical panel obtained from cutting or shaping the base mat or coated panels.
摘要:
Provided is a ceiling tile coated on at least one surface with an acoustically transparent coating which creates pores at the tile surface and comprises a high Tg polymeric binder, titanium dioxide, and particles selected from the group consisting of void latex particles, hollow glass beads, calcium carbonate, calcium magnesium carbonate, calcined clay and any combination thereof. Compositions for acoustically transparent coatings and methods for making a substrate surface acoustically transparent are provided as well.
摘要:
A paperboard packaging material includes a top layer including non-wood fibers blended with wood fibers, wherein the non-wood fibers are 5% to 100% of the top layer; a back layer including non-wood fibers blended with wood fibers, wherein the non-wood fibers are 5% to 100% of the back layer; and a middle layer disposed between the top and back layers. The middle layer can include 5% to 100% non-wood filler fibers. The non-wood filler fibers can be wheat straw. The non-wood fibers can be bamboo.