166results about "Coatings without pigments" patented technology

A biodegradable composition is disclosed. The biodegradable composition includes (i) a biodegradable polymer and (ii) a cellulose ester. Films that include or are formed from the biodegradable composition, as well as articles that include a substrate and a layer of the biodegradable composition on a surface thereof, are also described.

In a release paper consisting of a backing paper layer coated on at least one side with PVOH and a silicone coating on at least one side, in which the backing paper layer coated on at least one side with PVOH consists of bleached kraft paper, containing at least up to 30 wt. % softwood and hardwood with a total freeness between 30 °SR and 42 °SR, preferably between 33 °SR and 38 °SR, and processing aids, and also a release layer which is applied at least on one side to the PVOH-coated side of the backing paper layer and consists of 0.5 to 5 g / m2 of a silicone, and wherein the release paper coated at least on one side with PVOH and silicone has a density between 850 and 990 kg / m3, preferably between 900 and 970 kg / m3, and a method for producing a release paper.

The invention discloses nano cellulose with high lignin content, a preparation method thereof and application of a barrier coating. The preparation method comprises the following steps: mixing a lignocellulose raw material with dilute sulphuric acid for acid pretreatment, and selectively depolymerizing hemicellulose to obtain lignin-rich residues of which the relative content of lignin is higher than that of the raw material; and carrying out mechanical nano fibrillation treatment to obtain the high-lignin-content nano cellulose with the lignin content of 29-60%. The prepared nano cellulose with high lignin content has excellent thermal stability, hydrophobicity and organic compatibility. The surface of paper is coated with the coating material, after hot pressing treatment, the Cobb value of the coated paper is as low as 3.3 g / m < 2 >, the water vapor permeability is only 12.1 g / (m < 2 >. D), grease permeation can be completely blocked, and the coating material has wide application prospects in the field of food packaging.

A process includes the steps: (a) providing a base emulsion; (b) providing a catalyst emulsion; (c) providing a stabilizer selected from silicone polyethers, alkyl alkoxylates, olefinic alkoxylates and polyvinyl alcohols; and (d) combining the base emulsion, catalyst emulsion and stabilizer together to form a curable silicone emulsion.

Silicone release coating emulsions can be dried and cured to form a silicone release coating on both paper and plastic substrates. The coated substrates can be used in a variety of end-use applications, including (opto)electronic device fabrication and food contact applications.

The present invention relates to surface-foamed paper and paperboard coated with a thermosensitive micro-foaming agent and, more specifically, to surface-foamed paper and paperboard that exhibit excellent shock absorption and buffering performance by coating the surface of paper with a foaming mixture comprising a micro-foaming agent and starch, and then foaming the micro-foaming agent through high-temperature drying. In addition, the present invention relates to eco-friendly surface-foamed paper and paperboard using a foam material that can volumetrically expand on the surface of paper and paperboard.

To provide an aerosol generating article that includes a wrapper that does not swell up by absorbing water or compounds contained in an aerosol generating substrate.SOLUTION: An aerosol generating article 10 includes an aerosol generating substrate 12 comprising nicotine, and a wrapper 50 disposed about the aerosol generating substrate. The wrapper includes a paper layer having a thickness / grammage of about 1.2 micrometers / gsm or less, the paper layer including a surface treatment including polyvinyl alcohol or siloxane.SELECTED DRAWING: Figure 1

The application relates to the field of decorative materials, in particular to a wear-resistant decorative paper and a preparation method thereof. The preparation method of the wear-resistant decorative paper comprises the following steps: coating wear-resistant paint on the surface of base paper to form a wear-resistant coating layer through drying treatment, so that the wear-resistant decorative paper is prepared; the wear-resistant paint is prepared by using acrylic acid hydroxy ester, ethyl acrylate and methyl methacrylate, so that the wear-resistant paint has good adhesion; the wear-resistant paint is prepared by using divinylbenzene and styrene, so that the hardness and strength of the film layer formed by the wear-resistant paint are improved; the wear-resistant paint is prepared by using vinyl silicone oil, so that the flexibility and water / oil repellency of the film layer formed by the wear-resistant paint are improved; the wear-resistant paint is prepared by using acrylic acid hydroxy ester, ethyl acrylate, methyl methacrylate, divinylbenzene, styrene and vinyl silicone oil, so that the prepared wear-resistant decorative paper has excellent wear resistance.

The present invention relates to A method for manufacturing a paper or paperboard based packaging laminate, said method comprising: a) providing a paper or paperboard substrate having a grammage of at least 80 g / m2, a density below 800 kg / m3, and a bending resistance in the machine direction as measured according to ISO 2493 (L&W, 15°) above 80 mN, b) providing a transfer coating substrate comprising a vacuum coating layer and a backing layer separated by a release layer, and c) transferring the vacuum coating layer from the backing layer to the paper or paperboard substrate by a transfer coating process using an adhesive layer applied on the paper or paperboard substrate and / or the vacuum coating layer to obtain a paper or paperboard based packaging laminate.

The invention relates to a method for producing a packaging material (10). The method comprises at least the steps of providing a substrate (12) which has a base material made of cellulose and a basis weight of at most 100 g / m². 2 The invention comprises coating at least one side of the substrate with a solvent-based pre-coating agent to produce at least one pre-coating (16) on the substrate (12) and coating at least one side of the substrate with an aqueous coating agent to produce at least one water vapor barrier layer (18), wherein the packaging material (10) has a maximum wet strength content of 100 g / t. The invention further relates to a corresponding packaging material (10) with a layer system (14) as well as a blank and packaging made from such packaging material (10).

The present invention relates to a method for producing a barrier-coated substrate web (10; 25a) coated with a first layer (12a) of a reducing agent and a water-dispersible polymer and a second layer (13a) of reduced graphene oxide. The present invention further relates to a laminate packaging material (20a) comprising the barrier-coated substrate web (10), in particular intended for liquid carton food packaging, and to a liquid carton packaging container made of this laminate packaging material.

The present invention relates to a packaging material in the form of a laminate comprising a paper or paperboard substrate and a barrier film. The barrier film is based on microfibrillated cellulose. The laminate comprises a paper or paperboard substrate in contact with a first adhesive layer, which is in contact with a second adhesive layer, which is in contact with the barrier film. The present invention also relates to a method for producing such a laminate.

The present invention relates to a method of producing a coated molded fiber-based product comprising filling at least one recess of a molded fiber-based product with a liquid water-based coating composition and removing excess coating composition to obtain a wet coating film, followed by curing the wet coating film. The invention also relates to a coated molded fiber-based product produced by said method and to the use thereof as a food container.

To provide a contamination preventing agent composition having a sufficiently excellent contamination preventing effect and its durability. The present invention is a contamination preventing agent composition to be applied to a dry part D of a papermaking process, wherein the composition is an emulsion comprising a silicone-based oil that is liquid at room temperature, an aqueous medium that is liquid at room temperature, and a dispersant for dispersing the silicone-based oil in the aqueous medium, the aqueous medium comprises water and a polyhydric alcohol dissolved in the water, the boiling point of the polyhydric alcohol is greater than 100°C, the blending ratio of the silicone-based oil to 1 part by mass of the polyhydric alcohol is 0.5 to 50 parts by mass, the blending ratio of the water to 1 part by mass of the polyhydric alcohol is 25 to 300 parts by mass, and the blending ratio of the dispersant to 1 part by mass of the polyhydric alcohol is 0.1 to 50 parts by mass.

The present invention is directed to a film or coating comprising a fiber material, wherein at least 60% by weight of said fiber material is microfibrillated cellulose, said film or coating also comprising at least 1% by weight of extractives from wood bark or cork wood. The invention is also directed to products, such as packaging materials, using or incorporating said film or coating. Such packaging materials are for example laminates or multi-layer structures. The films or coatings according to the present invention having advantageous barrier properties and are therefore particularly suitable for sensitive objects that need to be packaged in a controlled or modified atmosphere. The present invention is also directed to a composition comprising a fiber material, wherein at least 60% by weight of said fiber material is microfibrillated cellulose, said composition also comprising at least 1% by weight of extractives from wood bark or cork wood. The composition is useful for example in the preparation of the film or coating.

The invention provides a nanocellulose styrene composite emulsion and application thereof in air filter paper, and relates to the technical field of functional paper preparation. According to the method, a nanocellulose solution is introduced into an oil phase containing styrene to be emulsified, the high-stability nanocellulose styrene composite emulsion is prepared, and the stability of the nanocellulose styrene composite emulsion is improved from two aspects: firstly, nanocellulose forms a compact covering layer on the surface of a liquid drop, so that demulsification fusion is prevented; and 2, a complex three-dimensional network structure in which fibers and liquid drops are mutually crosslinked is constructed by regulating and controlling the volume ratio of a water phase to an oil phase. After the emulsion is coated on the surface of the filtering base paper and is dried, styrene is subjected to in-situ polymerization in the drying process to form polystyrene microspheres, and firm bonding is generated between fibers and nano cellulose, so that the bonding force between a coating layer and the base paper is remarkably enhanced. The dry / wet tensile strength and bursting strength of the air filter paper prepared by the method are remarkably improved, and the overall stability is excellent.

This oil repellent composition contains at least one of the following copolymer A and copolymer B.　Copolymer A: A copolymer which includes a unit based on a monomer represented by formula 1 and a unit based on a nonionic monomer that has a solubility of 1 g / 100 mL or more with respect to water at 20°C.　Copolymer B: A copolymer which includes a unit based on a monomer represented by formula 1 and units based on ionic monomers each having an ion-donating group, and in which the units based on ionic monomers include a unit based on a monomer having a cation-donating group and a unit based on a monomer having an anion-donating group.　In formula 1, X1 represents a monovalent polymerizable reactive group, A1 represents a divalent organic group, and B1 represents a monovalent organic group having at least one trialkylsilyl group.　Formula 1: X1-A1-B1

An aerosol generating article (10) includes an aerosol generating substrate (12) comprising nicotine and a first paper layer (50) disposed about the aerosol generating substrate. The first paper layer has a first thickness / grammage value. A second paper layer (20) is disposed about the first paper layer. The second paper layer has a second thickness / grammage value. The first thickness / grammage value is less than the second thickness / grammage value.

The application provides a preparation method of fluorine-free antibacterial paper and application thereof, and the preparation method is characterized in that: a first coating liquid containing hydrophobic cellulose nanocrystals and cationic starch modified AKD is coated on raw paper in a step-by-step coating manner, then a second coating liquid containing hydrophobic cellulose nanocrystals and polyvinyl alcohol is coated, and the content of each component in the first coating liquid and the second coating liquid is controlled, so that the packaging paper with high physical strength, good oil resistance and water resistance is finally prepared. Since no fluorine-containing raw materials are used in the above preparation process, the packaging paper can be further made into food packaging paper.

The application relates to the papermaking technical field, in particular to a high-barrier food packaging paper and a production process thereof. The application aims to solve the problem of how to reduce the cost while improving the barrier performance of the packaging paper. To this end, the production process of the high-barrier food packaging paper can reduce the fiber size, improve the fiber dispersion uniformity, strengthen the internal structure of the packaging paper and improve the barrier performance of the packaging paper by homogenizing the primary fiber slurry. In addition, the secondary fiber slurry, sodium alginate sol, alkyd resin and talcum powder are used as raw materials, the production cost is reduced, the barrier performance of the food packaging paper is improved, the oil resistance of the packaging paper is improved, and the tensile strength and breaking strength of the packaging paper are also improved.

The present invention relates to the field of the adhesive tape industry, and more particularly, to a base paper for adhesive tapes and adhesive tapes for packaging and office / stationery use. According to one particular embodiment, the adhesive tape of the present invention may be based on transparent paper, one side of the paper being coated with a release agent and the other side being optionally coated with a primer coating. The present invention also relates to a method of producing the adhesive tape base paper and the adhesive tape, and their use as packaging or office / stationery tapes.

The present invention relates to a paper or cardboard-based packaging laminate comprising a paper or cardboard base layer and a gas barrier layer, wherein the gas barrier layer comprises i) a barrier coating layer containing polyvinyl alcohol (PVOH) or a polysaccharide, and ii) an extruded coating polymer layer containing ethylene vinyl alcohol (EVOH).

A repulpable release liner and a combined composition for preparing the same are disclosed. The combined composition comprises (A) a first formulation comprising a vinyl-functionalized polysiloxane, a non-vinyl polysiloxane, and a noble metal- siloxane complex catalyst; (B) a second formulation comprising at least one olefin copolymer and at least one olefin- (meth) acrylic copolymer. The first formulation is independent of the second formulation. The release liner prepared with the combined composition exhibits superior repulpability, rub resistance, coatability of release coating with desired release force and the like.

The invention relates to a preparation method of novel anti-counterfeiting directly-plated paper, belongs to the technical field of packaging materials, and is realized by mainly depending on the interaction of a prime coating and a printing coating. According to the key point of the technical scheme, the coating comprises the following components in parts by weight: a primer coating comprises the following components in percentage by weight: 20-22% of epoxy acrylic resin; 28 to 30% of TPGDA (Thermoplastic Glycol 20%-21% of TMPTA (trimethylolpropane 28.5%-29.5% of HDDA (High Density And 0.5 to 1% of BYK333. The printing coating comprises the following components in percentage by weight: 20-24% of pure acrylic resin; 5% of epoxy acrylic acid; 35.8% to 39.8% of TPGDA (Thermoplastic 20%-22% of TMPTA (Trimethoprim Poly 13 to 15% of HDDA (Hexamethylene Diamine Diamine And 0.2%-0.5% of BYK333. The invention aims to provide the coating for prime coat and the coating for printing, which are used for producing a high-quality positioning anti-counterfeiting product, a high-brightness effect and a matte effect of a mirror surface are formed on the same printed matter through a cohesion reaction between the prime coat layer and the printing layer, high contrast of local images and texts is visually realized, and the anti-counterfeiting effect of the printed matter is improved. And the three-dimensional convex feeling and the cold ironing effect are achieved at the same time, the double requirements for counterfeiting prevention and attractiveness are met, and the requirements of the novel high-end packaging industry and the decorative material market are met.

The present invention relates to a process for producing a fibrous material with improved dewatering behavior. The fibrous material produced according to the present invention is useful in the preparation of for example films and coatings. The fibrous material can be produced from a suspension comprising MFC or highly refined pulp, from which a part of the solids is removed, followed by heat treatment carried out on the suspension and / or on a wet web formed from the suspension.

A multilayer product is disclosed. The multi-layer product may include a cellulose fiber-based base layer and a barrier layer. The barrier layer may include at least 10% (w / w) of hydrolysed cellulose fibers.

To provide a paper coating agent that forms a coating layer with excellent oil resistance even after folding, and coated paper using the paper coating agent. [Solution] A paper coating agent and coated paper using the paper coating agent, comprising an amorphous polyester resin, a hydrophobic compound A consisting of one or more selected from wax and silicone, polyvinyl alcohol, and an aqueous medium.

Disclosed is an aqueous coating agent comprising: (A) a copolymer of ethylene with a carboxylic acid derivative having an ethylenic double bond; (B) a basic material; and (C) particles having melting point of 100° C. or more, and is further a paper substrate coated with the aqueous coating agent.

The present invention relates to a method for producing a barrier substrate comprising a microfibrillated cellulose (MFC) film and a polymer film. The method comprises providing a suspension comprising between 50 and 100% MFC by weight, based on the total dry weight, and having a dry content of 1 to 40% by weight. A wet MFC film is formed from the suspension by casting it onto a non-porous support, and the wet MFC film positioned on the support is dehydrated and / or dried to a dry MFC film having a moisture content of 20% by weight or less. A polymer film is applied onto the dry MFC film positioned on the support to form an intermediate substrate, which is pressed in at least one nip to form a barrier substrate. The present invention also relates to the barrier substrate obtained by this method, a laminate comprising the barrier substrate and a paper or paperboard substrate, and a packaging material comprising the barrier substrate or laminate.

The invention relates to a composition for providing barrier properties for a cellulosic fibre web, such as paper, board or the like. The coating composition comprises microfibrillated non-wood biomass, having a particle size D90<250 μm and particle size D50<100 μm, which microfibrillated non-wood biomass comprises at least 5 weight-% of a hemicellulose fraction and / or pectin, calculated from the dry weight of the microfibrillated non-wood biomass; an auxiliary agent comprising at least one cellulose derivative, and / or a synthetic binding agent, such as polyvinyl alcohol or polystyrene acrylate copolymer.