228results about How to "Avoid flaws" patented technology

The production method of filament of nanofibers is a simply and high efficiency way. It adopts spinning trunk (3). There are two lines of nozzles (1) whose spout are opposite at the height of the top of the trunk. There are several group of pare of thread guide roller (2) in the trunk.. The distance between thread guide roller and nozzles are equal. The material process is: 1) Transport high polymer solution to nozzles in the trunk of filament of nanofibers; 2) Bring high-voltage DC of opposite polarity to bear to the nozzles. 3) High polymer solution at the top of the nozzles is stretched and whipping responded to form nanofibers which contain electric charge. The opposite nozzle spray nanofibers contains contrary electric charge. They are allure and collide in the air and form nanofibers. The nanofibers are stretched and towed by nozzle and filament of nanofibers comes into being. The operation is simple, highly effective and has no losing of nanofibers.

A decorative part and a process for producing the decorative part. A first nitride layer containing at least one metal selected among hafnium, titanium, and zirconium is formed on the surface of a decorative part comprising a soft base made of a material selected among stainless steel, titanium and titanium alloys, brass, etc., and a second nitride layer containing at least one metal which is selected among hafnium, titanium, and zirconium and is different from that in the first nitride layer is formed on the first nitride layer to thereby form a primer layer. A multilayered hardened layer including a gold alloy layer is further formed as a finish layer on the primer layer.

The production method of filament of nanofibers is a simply and high efficiency way. It adopts spinning trunk (3). There are two lines of nozzles (1) whose spout are opposite at the height of the top of the trunk. There are several group of pare of thread guide roller (2) in the trunk.. The distance between thread guide roller and nozzles are equal. The material process is: 1) Transport high polymer solution to nozzles in the trunk of filament of nanofibers; 2) Bring high-voltage DC of opposite polarity to bear to the nozzles. 3) High polymer solution at the top of the nozzles is stretched and whipping responded to form nanofibers which contain electric charge. The opposite nozzle spray nanofibers contains contrary electric charge. They are allure and collide in the air and form nanofibers. The nanofibers are stretched and towed by nozzle and filament of nanofibers comes into being. The operation is simple, highly effective and has no losing of nanofibers.

The invention relates to a high-temperature resistance wear-resistant BOPP film used for cigarettes, and a preparation method thereof. The high-temperature resistance wear-resistant BOPP film used for cigarettes is prepared via direct co-extrusion combination of three structures including an upper surface layer, a core layer, and a lower surface layer; the upper surface layer is mainly prepared from a polypropylene copolymer, the core layer is mainly prepared from a polypropylene homopolymer, and the lower surface layer is mainly prepared from the polypropylene copolymer; 100 weight parts of the upper surface layer comprises, by weight, 86 to 93 parts of copolymer polypropylene, 6 to 10 parts of a slipping agent master batch, and 1 to 4 parts of an antisticking agent master batch; the core layer is prepared from 71 to 83 parts of the homopolymer polypropylene, 15 to 25 parts of a stiffening agent master batch, and 2 to 4 parts of an electrostatic agent master batch; and the lower surface layer is prepared from 100 weight parts of copolymer polypropylene; the slipping agent master batch possesses an organic round ball structure, is capable of reducing upper surface layer friction factor and improving surface high temperature resistance. The high-temperature resistance wear-resistant BOPP film possesses wear resistance and high temperature resistance, and is capable of resisting whitening and wearing.

The invention discloses an automatic reaming device for the center hole of a disc saw blade, and belongs to the technical field of metal saw blade processing machinery. The automatic reaming device comprises a base, a vertical drilling machine, a material feeding mechanical arm translation driving mechanism, a material receiving mechanical arm translation driving mechanism, a material feeding lifting mechanism, a material receiving lifting mechanism, a reaming saw blade carrying mechanism, a material feeding mechanical arm and a material receiving mechanical arm. The vertical drilling machine is provided with a drilling machine worktable and a reamer; the material feeding mechanical arm translation driving mechanism and the material receiving mechanical arm translation driving mechanism are arranged on the base and on the left end and the right end of the base in the length direction; the material feeding lifting mechanism and the material receiving lifting mechanism are arranged on the back side of the left end of the base and the back side of the right end of the base; the reaming saw blade carrying mechanism is arranged on the drilling machine worktable; the material feeding mechanical arm is in sliding fit with the upper part of the left end of the base and is in connection with the material feeding mechanical arm translation driving mechanism; the material receiving mechanical arm is in sliding fit with the upper part of the right end of the base and is in connection with the material receiving mechanical arm translation driving mechanism. The equipment input quantity is reduced, and the labor resource is saved; the operation safety of workers is ensured; the operation intensity is reduced; the reaming quality of the center hole of the disc saw blade is ensured, and flaws are eradicated; mechanized automatic reaming is realized, the environment of a workplace where the workers work is standard and orderly.

The invention discloses a pattern type powder coating and a preparation method thereof. The preparation method comprises the following steps: step (1) of evenly mixing a polyester resin, an epoxy resin, a curing agent, a pigment filler, an antifoaming agent and a pigment; step (2) of extruding the evenly mixed materials from an extruder, and performing cooling, pressed into pieces and smashing; step (3) of adding a leveling agent in the smashed materials, evenly mixing the materials and grinding the materials. The pattern type powder coating can be prepared without adding a pattern agent and can be completed under existing production conditions, and there is no need to add any device; existing overall production processes are not changed; and the powder spray curing conditions of the pattern type powder coating do not need to be changed. The novel process for preparing the pattern type powder coating is low in cost and good in effect.

The invention discloses a mist spray humidifying device of an opener. The mist spray humidifying device comprises a nozzle, a high-pressure pump and a nozzle fixing pipe, wherein the water inlet end of the nozzle fixing pipe is connected with the high-pressure pump through a high-pressure pipe, the water outlet end of the nozzle fixing pipe is connected with the nozzle, a water inlet of the high-pressure pump is connected with a water outlet of a water box through a water inlet pipe, a water outlet of the high-pressure pump is provided with a filter, and the high-pressure pipe is provided with a pressure gage. The mist spray humidifying device is characterized in that the nozzle fixing pipe is arranged on a fixed pipe support which comprises two side stand columns, the two side stand columns are connected with each other through an upper transverse beam, the nozzle fixing pipe is connected with the transverse beam, the nozzle is arranged above opening fibers, a switch valve is arranged between the nozzle and the nozzle fixing pipe, the water inlet end of the nozzle fixing pipe is higher than the water outlet end of the nozzle fixing pipe, and the tail end of the nozzle fixing pipe is provided with a screwed plug. The mist spray humidifying device is simple in structure and good in humidification uniformity, mist spray quantity is convenient to regulate, assembly, disassembly and maintenance are convenient, flaws of the fibers caused by long-time accumulation of water in a water pipe are avoided, and the mist spray humidifying device meets the requirement for scale production.

The invention relates to continuous paper-feeding, scanning method and continuous paper-feeding device. The continuous paper-feeding device and scanning device are employed in the inventive method. A paper-picking roller and paper-separating roller of continuous paper-feeding device rotates forward, paper-picking roller picks scanning piece from stacked paper and paper is separated by paper-separating roller; when front end of scanning piece gets to scanning device, paper-picking roller stops rotating, paper-separating roller continues to rotate forward, scanning roller of scanning device rotates to pick paper and scan; when scanning module completes scanning for the scanning piece, scanning roller stops rotating. The inventive continuous paper-feeding device can effectively avoid paper jam and scanning image defect during continuous paper-feeding, and prevent scratch and protect delicate scanning piece such as photo, accomplish good butt with portable scanner and automatic continuous paper-feeding, properly extend function of portable scanner, provide convenience for portable scanner to process scanning image.

The invention provides laser marking equipment. One end of a feeding device is a feeding opening; the other end of the feeding device is a first transferring opening; a laser marking device is arranged behind the first transferring opening; a connecting and shunting device is arranged behind the laser marking device; a positioning rotary table and a conveying device for conveying products from the first transferring opening to the positioning rotary table and then conveying the products to the laser marking device are arranged between the first transferring opening and the laser marking device; and a product identification device is arranged on the side of the positioning rotary table. The laser marking equipment has the advantages that the products are thoroughly protected, the safety is high, the orientations of the products are automatically adjusted by recognizing the shapes and the pattern orientations of the products, the laser marking equipment is used for marking according to the patterns and the orientations, and the marking efficiency is improved.