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292results about "Wax addition" patented technology

Battery and capacitor diaphragm filter material formed by wet nonwoven fabrics and preparation method of filter material

The invention discloses a battery and capacitor diaphragm filter material formed by wet nonwoven fabrics and a preparation method of the filter material. The fiber materials are as follows in percentage by weight: 0.1%-2.5% of plant fibers and 80%-99.9% of synthetic fibers, inorganic powder being 45%-1000% of the weight of the fiber, organic powder being 0-50% of the weight of the fibers, and strengthening binder being 0.5%-15% of the weight of the fibers. The preparation method of the filter material comprises the following steps of: pulping the plant fiber and the synthetic fibers, respectively; homogenizing and mixing the inorganic powder with the organic powder under high pressure, and forming the mixture into a single layer or a plurality of layers by a mixer; coating, thermally rolling and modifying the mixture, so that various physical and chemical indexes of the diagram are improved, the pore diameter size can be effectively controlled and the uniformity of the pore diameter is improved; moreover, treelike crystals can be prevented from being generated by maze type bent holes; the filtering precision and the efficiency are high; the inner resistance of the diagram is high; the liquid retaining rate and the high temperature resistance of the diagram are improved; the over-temperature closed-cell protection is improved; the dimension deformation is small; the service life is long; and the economic benefits and the social benefits are better.
Owner:吕凯

Formulation for achievement of oil and grease resistance and release paper properties

A formulation, and a process for making same, is disclosed which is useful as a coating or treatment for imparting oil and grease resistance to an underlying substrate. The formulation does not contain any fluorochemicals. At the same time, however, the formulation provides oil and grease resistance properties that are equivalent to known coatings and treatments which contain fluorochemicals, particularly those coatings which are permitted to come into direct contact with food products. Therefore, the formulation of the present invention is ideal for use as a coating for paper and paperboard, including paper packaging such as that utilized in food wrappers, food containers, food receptacles and the like, and for other shaped articles. The formulation is also useful as a coating or treatment for providing release properties to an underlying substrate without the use of silicone. In addition, the present invention relates to the process for making the underlying substrate ideal for holdout of the release coating without excessive fiber refining, as in glassine papers. The formulation is a low solids coating that can be applied on the size press of a paper machine, eliminating the need for a post-machine coating process. The formulation does not include silicone, thereby allowing the release paper to be re-pulped. The wet end additive that provides sheet holdout combines with the release formulation to provide a release paper for pressure sensitive adhesives.
Owner:GLATFELTER CORP

Production process of greaseproof paper

The invention discloses a production process of greaseproof paper. The production process includes: taking a needle pulp board and a nonfluorescent bamboo pulp board, pulping, preparing pulp, slushing, applying glue, papermaking on a screen, pressing, pre-drying, surface-gluing, post-drying, press-polishing, controlling quality, coiling, and packing to obtain the finished paper, wherein weight percent of the needle pulp board and the nonfluorescent bamboo pulp board is 30+ / -5% and 70+ / -5%, preferred ratio of the needle pulp board to the nonfluorescent bamboo pulp board is 30%:70%, speed of papermaking on the screen is 90m / min, mass concentration of the screen is 0.45-0.55%, preferred pulping grinding teeth are 2.2mm in width, 1.9mm in teeth channel width, and 3.6mm in teeth depth, preferred press polishing machine is a four-roller soft press polishing machine with double pressing areas, preferred raw material is food grade, and preferred pipeline is made of 304L type stainless steel. By the production process, potential safety hazard due to larger amount of oil-proofing agent used in the greaseproof paper in traditional production process is avoided, and amount of the oil-proofing agent used in the greaseproof paper is reduced greatly. The greaseproof paper produced by the process has fine gloss, tightness, and oil resistance, and reaches food grade.
Owner:福建省建宁县联丰造纸有限公司

Waterproof flame-retardant paper cone, speaker and preparation method of paper cone

The invention provides a waterproof flame-retardant paper cone, a speaker and a preparation method of the paper cone. The waterproof flame-retardant paper cone is composed of pulp, the front surface of the waterproof flame-retardant paper cone contains a waterproof agent, and the back surface of the paper cone contains a flame retardant. According to the waterproof flame-retardant paper cone provided by the invention, the suitable pulp is selected, so that acoustic performance and tone of the paper cone are ensured; at the same time, the paper cone is subjected to waterproof treatment and flame-retardant treatment, the front surface of the paper cone is coated with the waterproof agent, the back surface is coated with the flame retardant, so that the usage amount of the flame retardant andthe waterproof agent can be reduced, the weight increment of the paper cone can be effectively controlled within 5% without affecting the paper pulp composition of the paper cone, the problem that effects are affected because a mutual reaction exists when the flame retardant and the waterproof agent are mixed for use is avoided, the flame retardant grade can reach V-0, the waterproof grade can reach IPX-7, and the flame-retardant waterproof effects are excellent; and the paper cone has good effects when used in the speaker, and has wide market prospects.
Owner:GUOGUANG ELECTRIC

Surface sizing agent emulsion as well as preparation method and application thereof

The invention provides a preparation method for a surface sizing agent emulsion. The preparation method comprises the following steps: mixing a cationic polymer with water; adding molten AKD (alkyl ketene dimer) wax and paraffin wax at 70-75 DEG C; and then homogenizing in a condition of 10-25 Mpa, cooling, and then adding glyoxal, so as to obtain the surface sizing agent emulsion, wherein the cationic polymer is an aqueous dispersoid copolymerized from a cationic monomer, a (methyl) acrylate monomer and (methyl) styrene, and prepared by taking gelatine as a dispersing agent, taking a cationic and non-ionic compound surfactant as an emulsifying agent, taking 2,2'-azo-bis (amidino-propyl) dihydrochloride as an initiator, and performing free radical emulsion polymerization on the mixed monomers; the surface sizing agent emulsion comprises the following components in parts by weight: 80-90 parts of the AKD wax, 10-20 parts of the paraffin wax, 25-100 parts of the cationic polymer, 1-5 parts of glyoxal, and 270-610 parts of water, wherein the total of the AKD wax and the paraffin wax is100 parts by weight. The surface sizing agent emulsion provided by the invention is capable of obviously improving the hydrophobicity of paper and improving the surface strength of the paper.
Owner:SHANGHAI DONGSHENG NEW MATERIALS

Waterproof and oilproof agent as well as preparation method and application thereof

The invention relates to a waterproof and oilproof agent as well as a preparation method and application thereof. The waterproof and oilproof agent is prepared from the following components in percentage by weight: 30%-50% of styrene acrylic polymer, 5%-10% of beeswax emulsion, 2.5%-4.5% of polyvinyl alcohol, 2%-5.5% of modified starch, 0.5%-2% of plasticizer and 28%-60% of deionized water. The waterproof and oilproof agent is good in film-forming property; beeswax emulsion in a formed coating and the styrene-acrylic acid polymer are combined to form a hydrophobic and oleophobic surface layer;meanwhile, the hydrophobic and oleophobic surface layer is compounded with the modified starch, so that the waterproof and oilproof effects of the waterproof and oilproof coating on food-grade raw paper are obviously improved; the waterproof and oilproof properties of the waterproof and oilproof agent are extremely good; the waterproof and oilproof agent can completely replace traditional waxing,silicon coating and laminating processes; and the paper can directly enter a papermaking pulping system to be recycled when being recycled, the pollution of the laminated paper to the environment isreduced; and therefore, the waterproof and oilproof agent is an environment-friendly material.
Owner:ZHONGSHAN TIAN JIA PAPER PROD
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