摘要:
Sheet-like products are disclosed containing an additive composition. In accordance with the present disclosure, the additive composition is applied to a creping surface. The additive composition includes at least an aqueous dispersion containing a thermoplastic polymer. A base sheet is then pressed against the creping surface for contact with the additive composition. The base sheet is then creped from the creping surface causing the additive composition to transfer to the base sheet. In particular, the additive composition is transferred to the base sheet in amounts greater than about 1% by weight, such as from about 2% to about 50% by weight. The additive composition may further include a lotion, a debonder, a softener, or mixtures thereof.
摘要:
This invention relates to a gypsum board coating comprising cardboard with a water-repellent treatment, containing a treatment agent which prevents the growth of micro-organisms. This invention also relates to a gypsum board comprising such a coating and a method for producing the cardboard-coated gypsum board.
摘要:
An intermediate laminate product includes a first paper layer including lignocellulose fibres, and a dry coating layer applied to one surface of the first paper layer, the coating including expandable microspheres having an expansion temperature (TE), at least one polysaccharide, and a plasticizing additive which is capable of forming a thermoplastic blend with the polysaccharide. An expanded laminate structure includes the intermediate laminate product and a second paper layer comprising lignocellulose fibres, which is attached to the dry coating by heat lamination. A liquid packaging board includes the expanded laminate structure and a liquid barrier layer. A process for forming the expanded laminate structure includes applying a second paper layer to the coating of the intermediate product at a second temperature (T2), which is above the expansion temperature (TE) of the microspheres, whereby the microspheres expand, and at which the plasticizing additive causes plasticizing of the polysaccharide, to form a thermoplastic blend.
摘要:
Provided is greaseproof paper that, when folded, shows little reduction in grease resistance at the folded portion. The greaseproof paper includes a paper base and a greaseproof layer provided on at least one surface of the paper base, wherein the greaseproof layer includes an ethylene-vinyl alcohol-vinyl ester copolymer (A) and a fatty acid derivative (B), contains 1 to 100 parts by mass of the component (B) per 100 parts by mass of the component (A), and is in an amount of 0.5 to 5.0 g/m 2 in terms of dry mass. In the greaseproof paper, the ethylene-vinyl alcohol-vinyl ester copolymer (A) has a content of ethylene units of 1 to 15 mol%, has a total content of vinyl alcohol units and vinyl ester units of 85 to 99 mol%, and has a degree of polymerization of 300 to 2000. In the greaseproof paper, the fatty acid derivative (B) is a fatty acid amide compound.
摘要:
Described is paper or cardboard packaging produced from mineral oil contaminated, (e.g., recycled) paper, wherein the packaging includes a barrier layer obtainable by applying an aqueous polymer dispersion comprising a copolymer obtainable by emulsion polymerization of C1-C4 alkyl (meth)acrylates, acid monomers, e.g., acrylic acid or methacrylic acid, 0-20 wt % of acrylonitrile and 0 to 10 wt % of further monomers in an aqueous medium in the presence of a carbohydrate compound, preferably in the form of a degraded starch, wherein the glass transition temperature of the copolymer is in the range from +10 to +45° C. The barrier layer may be situated on one of the surfaces of the packaging or form one of multiple layers of a multilayered packaging coating or be situated as a coating on one side of an inner bag situated within the packaging.
摘要:
A cellulosic fiber-based adhesive tape substrate, at least one side of which is coated with an aqueous mixture of: a) at least one organic polymer having pendant groups with at least one vinyl function; b) at least one polysiloxane comprising at least one hydrogenosiloxane monomer —(O—SiR1H)—, wherein R1 is a linear or branched and/or cyclic hydrocarbon chain which may contain heteroatoms; c) at least one hydrosilylation catalyst.
摘要:
This invention relates to a silicone release coating composition and a low release force emulsion silicone release coating for films and papers having cured release coating, providing a silicone release coating composition,comprising: (A) 100 weight parts of an organopolysiloxane fluid having a viscosity at 25℃ of 50 to 10,000 mPa·sand alkenyl content of 0.10 to 3.0wt%; (B) 0.5-40 weight parts of a diorganopolysiloxane represented by the average structural formula (1),having a viscosity at 25℃ of 5,000 to 150,000 mPa ·s and alkenyl content of 0.05 to 0.80 wt%: Rc 3SiO(RbRcSiO2/2)n1(Rc 2SiO2/2)n2SiRc 3 (1) wherein Rb is alkenyl having 2 to 8 carbon atoms; Rc is alkyl group having 1 to 8 carbon atoms or phenyl;n1 is a number that provides alkenyl content of 0.05 to 0.80 wt%;n2 is a number with a value of at least 1; and n1 + n2 is a number that provides this component with a viscosity at 25℃ of 5,000 to 150,000 mPa ·s; (C) an organohydrogenpolysiloxane that has a viscosity at 25℃ of 1 to 1,000 mPa ·s and that has at least two silicon-bonded hydrogen atoms in each molecule,and has alkyl group having 1 to 8 carbon atoms or phenyl group for its silicon-bonded organic groups, in an amount sufficient to provide a value of 0.8:1 to 5 :1 for the molar ratio of silicon- bonded hydrogen atoms in this organohydrogenpolysiloxane to the alkenyl groups in components (A) and (B); (D) a hydrosilylation reaction catalyst in a catalytic amount; (E) surfactant; (F) water; and (G) inhibitor.
摘要:
The invention relates to an aqueous coating composition of nano cellulose (e.g., microfibrillated cellulose), characterized in that has a dry matter concentration of 2%-12% of nano cellulose and comprises at least one cationic surfactant, which may be chosen among Hexadecyltrimethyl-ammonium bromide, Octadecyltrimethyl-ammonium bromide, Hexadecylpyridinium chloride and Tetradecyl trimethyl-ammonium bromide, Dodecyl pyridinium chloride. The invention also pertains to use of the composition as a coating layer and as an oxygen barrier layer. Further it relates to substrates, e.g., board, cardboard or paper coated with the composition. Moreover, the invention pertains to a process for preparing the coating composition.
摘要:
The present invention addresses the problem of providing a composite paper which exhibits excellent oil resistance, water vapor permeability, and water resistance even when hot and oily food is wrapped therein. The above problem can be solved by using a composite paper comprising an oil-resistant layer formed on at least one surface of a base paper, wherein the oil-resistant layer comprises a vinyl alcohol polymer (A) having a content of ethylene units of 2 to 10 mol%, a viscosity-average degree of polymerization of 300 to 2000, a saponification degree of 95 to 99.5 mol%, a total content of carboxyl groups and lactone rings of 0.02 to 3 mol%, a melting point of 180 to 230 °C, a content of 1,2-glycol bonds of 1.2 to 2 mol%, and a molar fraction of central hydroxyl groups in chains of three consecutive hydroxyls by a triad expression relative to vinyl alcohol units of 65 to 98 mol%, the base paper has an air permeability resistance of 1000 seconds or less and a bulk density of 0.5 to 1.0 g/cm 3 , and the oil-resistant layer is formed in an amount of 0.1 to 10.0 g/m 2 in terms of dry mass. The oil-resistant layer may also contain a fluorine compound (B), a layered inorganic compound (C) having an average aspect ratio of 20 to 1000, a fatty acid sizing agent (D), or a cross-linking agent (E).