51results about How to "Improve composite fastness" patented technology

This invention relates to electricity materials technique field and to one silve to copper double compound band process method, which comprises the following steps: firstly grinding the silver metal oxidation with one thin siver band to form silver metal oxidation or silver compound materials; grinding silver metal oxidation and silver compound band through its top silver band layer and copper band heat grinding through heat compound band for annealing.

The invention discloses a preparation method of a titanium dioxide/polysiloxane photocatalytic composite film, which comprises the following steps: adding vinyl-terminated silicone oil, hydrogen-containing silicone oil and titanium sol into a film-forming solvent, uniformly mixing, adding a reinforcing agent silicon dioxide, uniformly mixing, adding a platinum catalyst to initiate silicon hydrogen addition reaction, pouring into a mold, and gradually forming the film along with the solvent volatilization and silicon hydrogen addition reaction, thereby obtaining the titanium dioxide/polysiloxane photocatalytic composite film. The method is simple in technique and easy to implement; the crosslinking level of the stereoscopic network structure of the composite film is controllable, and silicon dioxide granules can be uniformly and stably dispersed in the composite film in the form of primary particles and can be easily enriched and embedded in the surface layer of the composite film; and the composite film has the advantages of favorable mechanical strength and obvious ultraviolet shielding effect, has excellent photocatalytic functions of resisting bacteria, degrading organic substances and the like, and can be used in the fields of textiles, paints, buildings, cosmetics, sanitation, medicine and the like.

The invention discloses a manufacturing method of an inner pressure pipe type multilayer composite film. The manufacturing method comprises: a, uniformly mixing a film forming polymer, a film forming diluent, a film forming penetrant, a film forming pore forming agent and a film forming additive according to a certain mass percentage ratio, heating to a temperature of 130-390 DEG C with an extrusion molding machine through a thermally induced phase separation method, melting, uniformly mixing, extruding with a pipe type film inner film mold, and cooling to obtain the inner layer film of a pipe type film; b, weaving a warp and weft mesh pipe outside the inner layer film by using a warp and weft weaving machine, wherein it is ensured that the warp and weft mesh pipe is tightly attached to the surface of the inner layer film; c, coating the inner layer film outer layer attached to the warp and weft mesh pipe with a layer of an outer layer film; and d, extracting the prepared inner pressure pipe type multilayer composite film semi-finished product by using ethanol or isopropanol to obtain the inner pressure pipe type multilayer composite film finished product. According to the present invention, the inner pressure pipe type multilayer composite film has advantages of good separation performance, good compounding fastness and good mechanical property, the area of the effective filtration membrane can be increased, and the breaking of the film pipe and the damage caused by the separating and the layering between the filtration membrane layer and the support layer can be effectively avoided, such that the use efficiency and the service life of the film can be improved.

The invention relates to a preparation method of an anti-pollution and high-strength hollow fiber nanofiltration membrane. The technical solution of the present invention is to design a new spinning process (see Figure 1 and Figure 2), which uses polyethersulfone (PES), sulfonated polyethersulfone (SPES) or a blend of the two As the body material, the electrospinning technology is combined with the traditional non-solvent phase inversion spinning process. When the hollow fiber casting solution is extruded from the spinneret, the solution ejected from the electrospinning needle just enters the hollow fiber membrane wall. The two fall into the coagulation bath together to undergo phase inversion, and after rinsing, winding and other processes, a hollow fiber nanofiltration membrane with functionalized beaded fibers or superfine fiber bundles as reinforcements is obtained. Multiple beaded fibers or superfine fiber bundles form reinforcing ribs firmly embedded in the hollow fiber nanofiltration membrane (see Figure 3, Figure 4), which is difficult to peel off. The reinforcing rib is a high-strength resin mixed with inorganic particles, which endows the hollow fiber nanofiltration membrane with Higher strength and stain resistance. The process of the invention is simple and advanced, and is suitable for large-scale production of hollow fiber membrane plants.

The invention discloses a digital pre-coating film which comprises a hot melt adhesive layer, a primer coating layer and a substrate film layer which are arranged in sequence, wherein the hot melt adhesive layer is a mixture of an ethylene-vinyl acetate polymer and a tackifier; the content of vinyl acetate is 28wt%; the primer coating layer is polyethyleneimine; the substrate film layer is a biaxially oriented polypropylene film or a biaxially oriented polyester film. The digital pre-coating film has the benefits that the flowability of the ethylene-vinyl acetate polymer is improved by regulating the content of the vinyl acetate in the ethylene-vinyl acetate polymer, meanwhile, the softening point of the ethylene-vinyl acetate polymer is reduced, and the adhesion property of the ethylene-vinyl acetate polymer is improved; the tackifier is added into the hot melt adhesive layer, so that the wetting capability and the adhesion property of a hot melt adhesive to a substrate can be improved through the tackifier, and furthermore, the bonding strength of the pre-coating film can be improved.

The invention relates to a milk machine aseptic packaging bag. The packaging bag is composed of an outer layer composite film and an inner layer PE film, wherein the outer layer composite film and theinner layer PE film are superposed, then the periphery of the outer layer composite film and the inner layer PE film are heat-sealed, and an air interlayer is formed between the outer layer compositefilm and the inner layer PE film. The formula of a first PE film, a second PE film and the inner layer PE film is optimally designed, the glue with good toughness is selected and used, after the produced outer composite film and the inner layer PE film are used for bagging, the heat sealing strength can reach 50N/15mm, after the bag is used for packaging 10 liters of liquid milk, the bag can resist positive pressure of 65kg and cannot break after dropping from a 1meter high place, and the defective rate is reduced from 0.1% to 0.05%.

The invention relates to the field of the processing of fish products and discloses a fine processing method of fish oil. The fine processing method of fish oil comprises the following steps: a, washing fish guts, removing giblets, pounding the fish guts to prepare a blank material; b, adding the blank material into an enzymolysis solution containing an immobilized magnetic composite enzyme for carrying out enzymolysis, and recycling the immobilized magnetic composite enzyme by using a magnet after carrying out enzymolysis; c, filtering the enzymolysis solution to remove residues, then standing and layering, and separating to obtain upper fish oil and lower oil-water mixed solution; d, transferring the oil-water mixed solution to a foam separating column, aerating the bottom of the foam separating column, generating a foam layer on the upper layer of the oil-water mixed solution, and separating the foam layer from the liquid in time; e, carrying out centrifugal separation on the oil-water mixed solution to obtain upper fish oil; f, mixing the upper fish oil obtained in step c with the upper fish oil obtained in step e to prepare the fish oil. The processing method of the fish oil is simple in the process and high in the extraction efficiency and the extraction rate; the processed fish oil is high in purity, free of fishy smell and pure in color.

The invention discloses a magic tape and a manufacturing method thereof. The magic tape comprises an inner non-woven fabric layer, a surface non-woven fabric layer and a thin film interlayer, wherein an oil ink layer is printed on the thin film interlayer; the surface non-woven fabric layer and the inner non-woven fabric layer are hot-pressed and laminated on two surfaces of the thin film interlayer; a plurality of air cushion areas and fixed areas are formed between the surface non-woven fabric layer and the thin film interlayer; and each fixed area is located between every two adjacent air cushion areas. According to the magic tape disclosed by the invention, the three layers of materials are molded and combined through hot-pressing, so that the magic tape is lower in using temperature, higher in speed, softer and higher in combining fastness; oil ink can be printed on the thin film layer by virtue of normal equipment, so that a printing effect is fuller and clearer and the utilization rate of the oil ink is reduced, and subsequently, overall manufacturing cost is reduced; and meanwhile, properties are improved and efficiency is improved.

The invention discloses a polyester composite film applied to extrusion coating type packaging bags. The polyester composite film comprises a base material layer, a cross-linking agent layer and a hot melt glue layer, wherein the base material layer is integrally laminated with the hot melt glue layer by virtue of the cross-linking agent layer; the base material layer is made of a biaxially oriented polyester film; the cross-linking agent layer is made of an aqueous prime coating and curing cross-linking agent; the hot melt glue layer is made of high-density polyethylene; the aqueous prime coating and curing cross-linking agent is an aqueous solution with the pH value being 8-11; the effective component of the aqueous prime coating and curing cross-linking agent is polyethyleneimine with the molecular weight being 7500-10000; the content of polyethyleneimine in the mass of the aqueous prime coating and curing cross-linking agent is 1-5%. Hot melt layers formed by the biaxially oriented polyester film and the high-density polyethylene are laminated as a whole body by virtue of the cross-linking agent layer, so that the compounding fastness of the hot melt layers cannot be stripped and can be greater than or equal to 4.0N per 15mm; the polyester composite film is low in raw material consumption and low in production cost.

The invention discloses a primer-free double-faced adhesive tape layer polypropylene pre-coated film and a preparation method thereof. The pre-coated film comprises a first hot melt adhesive layer, abase material film layer and a second hot melt adhesive layer which are arranged in sequence. Raw materials of the first hot melt adhesive layer and the second hot melt adhesive layer comprise an ethylene-vinyl acetate polymer, an antioxidant, a plasticizer and a tackifier, and the base material film layer is a biaxially oriented polypropylene film. The primer-free pre-coated film prepared by theinvention can be used for well bonding two materials with different properties, and has the advantages of high bonding composite fastness, stable product performance after bonding, no cracking and nodemolding.

The invention discloses a low temperature resistance dual-surface coating polyester aluminum laminated film, which is made from polyester base materials by coating on two surfaces, wherein one surface is coated with a polymethyl methacrylate (PMMA) composite coating, the other surface is coated with a polyurethane composite coating, the polyurethane composite coating is made from raw materials with parts by weight: aqueous polyurethane emulsion 30-40, water-epoxy resin emulsion 10-15, glycerol 2-4, rosins 2-4, acyclic acids 2-4, epoxidized soybean oil 1-2, turkey red oil 0.3-0.5, nano talcum powder 2-4, nanometer titania 1-2 and water 40-50. The low temperature resistance dual-surface coating polyester aluminum plating film can effectively an adhesion phenomenon, is excellent in barrier property and high in peel strength, has excellent acid and alkali resistance, improves compound fastness of the back surface of aluminum laminated films, is excellent in use performance, has excellent low temperature resistance simultaneously, is suitable to be used in low temperature cold environment, and is wide in appliance range and high in practical value.

The invention discloses a bag printing technology adopting environment-friendly water-based ink and belongs to the technical field of printing. The technology is characterized by comprising the following operation steps that a laminating film is unreeled, and one side of the laminating film is coated with at least one environment-friendly water-based ink layer through a printer; a fan is adopted for initial acceleration drying for 5-30 minutes; the side, away from the laminating film, of the environment-friendly water-based ink layer continues to be coated with a gloss oil layer, the fan is adopted for secondary acceleration drying for 5-30 minutes, after drying is performed, the laminating film rolls a wind-up roll, and after the laminating film is qualified via detection, a hot press film covering mode is adopted for attaching the laminating film to a shell of a bag. According to the bag printing technology adopting environment-friendly water-based ink, the arrangement positions of the environment-friendly water-based ink and the laminating film in the technology are improved, so that the laminating film is coated with the environment-friendly water-based ink first and then adheres to the shell of the bag through the hot press film covering mode, the situation that the laminating film is separated from the shell of the bag is reduced, the connection strength between the laminating film and the shell of the bag is improved, and thus the bag has good hardness and wear and scratch resistance.

The invention discloses a two-way easy-to-tear film. The two-way easy-to-tear film is three layers, including an outer layer, a middle layer and an inner layer. The outer layer comprises high-pressurelow-density polyethylene, low-pressure high-density polyethylene, linear low-density polyethylene and an ethylene-acrylic copolymer; the middle layer includes low-density polyethylene, metallocene medium-density polyethylene, an ethylene-methacrylic acid copolymer, and an ionomer or ethylene-norborneol dilute copolymer; and the inner layer comprises high pressure low density polyethylene, metallocene low density polyethylene, linear low density polyethylene, an ethylene-octene copolymer and functional master batch. The two-way easy-to-tear film has characteristics of good compound fastness, good customer experience and low cost, and is easy to tear in straight line in two directions.

The invention relates to a composite non-woven fabric and a printing pressing method thereof, wherein the composite non-woven fabric comprises a non-woven fabric surface layer and a printing substratelayer, a plurality of ink regions are printed on the top surface of the printing substrate layer, and are arranged at intervals, the non-woven fabric surface layer is compounded on the top surface ofthe printing substrate layer, and forms pressing regions with the top surface of the printing substrate layer, and the pressing regions and the ink regions are overlapped each other. According to thepresent invention, the composite non-woven fabric can ensure the clarity uniformity of the patterns in the ink regions, is beautiful, and has the improved compounding fastness.

The invention relates to a polypropylene film for a cold mounting composite film, a preparation method of the polypropylene film and the cold mounting composite film. The polypropylene film for the cold laminating composite film comprises a first surface layer, a core layer and a second surface layer which are sequentially arranged, the first surface layer comprises a polymethylpentene copolymer, the polymethylpentene copolymer is an olefin copolymer based on 4-methyl-1-pentene, the content of 4-methyl-1-pentene is 95-100 wt%, and the content of 4-methyl-1-pentene is 20-30 wt%. The surface tension of the first surface layer is less than 29mN/m, and the surface of the second surface layer is subjected to corona or flame treatment. The invention further provides a preparation method of the polypropylene film for the cold mounting composite film and the cold mounting composite film. The polypropylene film for the cold mounting composite film is easy to unroll, the preparation method is simple, and the prepared cold mounting composite film does not need release backing paper and is easy to unroll.