351results about "Coatings without pigments" patented technology

The present invention relates to compositions and methods for forming substantially bio-based barrier coatings suitable for application on paper and paperboard substrates, as well as paper and paperboard substrates to which one or more such substantially bio-based barrier coatings are applied. The bio-based barrier coatings of the present invention comprise a bio-wax emulsion comprising one or more bio-waxes, such as castor oil wax, formed by hydrogenation of a bio-based oil, such as castor oil. The barrier coating composition is formed by dispersing a bio-wax emulsion into a polyhydroxyalkanoate (PHA) dispersion and can be applied as a coating at ambient temperature, for example, to paper or paperboard, such as paper or paperboard consisting of regenerated fibers, using conventional industrial processes.

The paper sheet material includes a paper substrate having a uniform coating layer on at least one face thereof, the coating layer having a composition with silica and / or a silicone product to impart to the paper material a plastic-like tactile effect and in addition a polymeric component and a mineral component, wherein the polymeric component includes a polyurethane-based polymeric material and a styrene acrylic-based polymeric material, and the mineral component includes kaolin and precipitated calcium carbonate.

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 provides a flexible temperature sensor based on aerosol jet printing and a preparation method and application thereof, and belongs to the technical field of novel materials. The preparation method of the flexible temperature sensor comprises the following steps: (1) mixing polyimide with N, N-dimethylformamide to obtain a PI solution; coating paper with the PI solution, and drying to obtain a PI / paper-based composite material substrate; (2) preparing graphene and deionized water into a solution, and adding a dispersing agent to obtain conductive printing ink; and (3) taking the PI / paper-based composite material as a substrate, printing conductive printing ink on the PI / paper-based composite material substrate through aerosol jet printing, and drying to obtain the flexible temperature sensor. The flexible temperature sensor provided by the invention is mainly used for monitoring the internal temperature of a heat-sensitive food package. Through the improvement and innovation of materials and processes, the overall performance (such as stability, accurate monitoring performance, good bending adaptability, quick response and the like) and environmental protection performance of the sensor are improved, so that the sensor can be used for monitoring the internal temperature of a heat-sensitive food package.

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.

The present application relates to an organosilicon polymer and a use thereof. The organosilicon polymer comprises a repeating unit generated by a silicon-containing monomer I-1 and an optional silicon-containing monomer I-2 and a repeating unit generated by a monomer II. The polymer or a treating agent containing the polymer can be used for treating various articles such as textiles, paper products, and stones, and provides the articles with an oil and water repelling function.

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.

The invention relates to the technical field of neutral glue for papermaking, and discloses high-performance environment-friendly neutral glue for papermaking, which is prepared from 8 to 15 parts of alkyl ketene dimer, 0.3 to 1.0 part of cationized carboxylated nano cellulose, 5 to 15 parts of starch emulsifier and 1 to 5 parts of auxiliary component, wherein the cationized carboxylated nanocellulose is modified by grafting a cationic polymer, and the cationized carboxylated nanocellulose is adsorbed on an alkyl ketene dimer liquid droplet interface as a solid particle emulsifier in a Pickering emulsifier to form a composite emulsion. A cationic polymer is grafted on the surface of carboxylated nano-cellulose, so that the carboxylated nano-cellulose has cationic electrostatic adsorption and carboxyl interface activity, cationic groups are electrostatically combined with negative electricity fibers, the binding force between the fibers is enhanced, the tensile strength of paper is improved, meanwhile, nano-scale carboxyl adsorbs alkyl ketene dimer liquid drops to form a stable interface film, and the tensile strength of the paper is improved. The sizing efficiency of the neutral glue and the mechanical property of paper are improved.

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 present invention is directed to a process for manufacturing a film or coating comprising high amounts of cellulosic nanomaterial. According to the present invention, a screen printing press, such as a rotary screen press, is used to create a film or coating comprising cellulosic nanomaterial. One benefit of the present process is that the suspension used in the printing process has a high dry content and high viscosity, thereby facilitating the process for manufacturing a film or coating comprising high amounts of cellulosic nanomaterial.

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.

A coating composition contains the following components: (a) alkenyl-functional siloxane polymer with an average of at least two silicon-bonded alkenyl groups per molecule; (b) SiH-functional siloxane polymer containing an average of at least two SiH functionalities per molecule; (c) optionally, a non-reactive siloxane polymer; (d) hydrosilylation catalyst; (e) optionally, hydrosilylation reaction inhibitor; (f) surfactant; (g) an acid / base buffer that maintains a coating composition pH of less than 7; (h) alkyl and / or alkenyl succinic anhydride-modified starch; (i) water; (j) optionally, biocide; and (k) optionally, antifoam; where the molar ratio of SiH from component (b) to alkenyl groups from component (a) is in a range of 1.2 to 3.0.

Provided is an alkyl ketone dimer emulsion and the preparation thereof. More particularly, described is a 3-component emulsion, which is easy to prepare using low emulsification ability - high shear speed capability equipment to prepare the AKD emulsion with excellent quality, high efficiency, and less preparation time.

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).

Surface-modified fibers including fibers, and a surface-modifying layer covering at least a part of a surface of the fibers. The surface-modifying layer contains a compound having a hydrogen bonding functional group, and an amount of the surface-modifying layer is 0.01 to 2.5 parts by mass with respect to 100 parts by mass of the fibers used as a raw material.

The present invention provides a biodegradable article comprising a cellulosic film that is coated with a natural wax composition on one surface and is laminated to a support layer comprising a paperbased substrate on the opposite surface.

To provide a pollution prevention agent composition sufficiently excellent in pollution prevention effect and its long-lasting property.SOLUTION: The invention relates to a pollution prevention agent composition used in applying to a dry part D of a papermaking process and comprises an emulsion composed of a silicone-based oil which is liquid at an ordinary temperature, an aqueous medium which is liquid at an ordinary temperature, and a dispersant for dispersing the silicone-based oil in the aqueous medium, wherein the aqueous medium is composed of water and a polyhydric alcohol dissolved in water, a boiling point of the polyhydric alcohol is higher than 100°C, a blending ratio of the silicone-based oil to 1 pt.mass of the polyhydric alcohol is 0.5-50 pts.mass, a blending ratio of water to 1 pt.mass of the polyhydric alcohol is 25-300 pts.mass, and a blending ratio of the dispersant to 1 pt.mass of the polyhydric alcohol is 0.1-50 pts.mass.SELECTED DRAWING: Figure 1

The invention provides release paper, release paper backing paper and a preparation method of the release paper backing paper. The preparation method comprises the following steps: making raw paper with pulp, adding super-fine grinding fibers into the pulp, and enabling the specific surface area of the super-fine grinding fibers to be 50m < 2 > / g-100m < 2 > / g; carrying out surface sizing on the raw paper; and carrying out calendaring treatment on the glued paper. According to the preparation method of the base paper of the release paper, provided by the embodiment of the invention, the interlayer bonding strength of the paper reaches 1.5 N or above, and meanwhile, the paper also has proper surface smoothness, excellent PE bonding strength and proper moisture and whole-width uniformity; and the film spraying and silicon coating process of downstream customers can be met, and the processing efficiency is remarkably improved.

A base composition for forming a release coating composition is disclosed. The base composition comprises (A) a silicate resin that is liquid at 25°C in the absence of any solvent. (A) The silicate resin contains an average of at least one silicon-bonded ethylenically unsaturated group per molecule. The composition further comprises (B) an organopolysiloxane containing an average of at least two silicon-bonded ethylenically unsaturated groups per molecule. Methods for preparing the base composition and the release coating composition are also disclosed.

The present invention relates to a coated cellulose foam material having a density in the range of from 10 to 80 kg / m3, and a method for coating a cellulose foam. Said coated cellulose foam material is formed by applying at least one coating layer of at least one coating composition on at least one outer surface of a cellulose foam.

To provide a sheet containing fine cellulose fibers that can be easily produced using a general-purpose paper machine or coating machine and that exhibits an excellent visible light transmittance and / or gas barrier property.SOLUTION: There is provided a sheet, containing fine cellulose fibers and a cationic polymer, wherein the fine cellulose fibers and cationic polymer are aggregated in the sheet, a molecular weight of the cationic polymer is 100,000 to 1,000,000, and a content of the cationic polymer is 10 wt.% to 60 wt.% based on the fine cellulose.SELECTED DRAWING: Figure 3

Provided are a bacterial nanocellulose transparent film, a manufacturing method thereof, and a packaging material including a food packaging material or an electronic product packaging material using the same capable of newly manufacturing a bacterial nanocellulose transparent film with an oxygen barrier property, a moisture barrier property, or a UV barrier property by performing electron beam irradiation and a film process on bacterial cellulose.

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 barrier red algae fiber, a method for preparing the same, and a barrier coated paper and a barrier sheet comprising the same. The barrier coated paper according to the present invention not only has better oxygen barrier properties and dehydration properties during a coating process than conventional wood derived nanocellulose, but is also environmentally friendly because it has biodegradable properties.

The application discloses a kind of light and thin solvent-free silicone oil release paper manufacturing process, belong to release paper manufacturing technical field, package following steps: paper selection, primer, drying primer, spraying release agent, scanning and scraping release layer, flatten release layer, drying release layer, water recovery, release paper winding, select low, thin base paper of grammage, then lower coating dry weight is used to primer to base paper is carried out primer and drying is formed to form film layer to obtain intermediate paper, when spraying release agent, atomizer will release agent atomization into particle and be sprayed to the surface of film layer of intermediate paper, let release agent particle be evenly attached to the surface of film layer of intermediate paper, then through scraper and two flatten rollers destroy the surface tension of release agent particle, let all release agent particles be fused together, the particle size of release agent particle after atomization is smaller, can reduce the thickness of release layer, then release layer is dried, water recovery is obtained after getting light and thin release paper of low grammage, low thickness.

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.