8281 results about "Mold removal" patented technology

A method of making a composite material part, in particular a wind turbine blade of great length, consists in placing a thickness of a cloth made up of threads comprising a mixture of polypropylene threads or fibers and of glass fibers or threads in two mold portions having the shape of the part that is to be made, placing an inflatable envelope on the cloth inside one of the mold portions, in closing the mold, in placing it in an enclosure fed with hot gas under pressure to melt the polypropylene of the cloth, thereby embedding the glass fibers or threads, then in allowing it to cool, and in unmolding.

The invention discloses a formula of a composite material for an automobile interior part. The formula consists of the following materials in percentage by weight: 40 to 60 percent of polylactic acid fiber and 40 to 60 percent of natural fiber. The production method of the invention comprises the following steps: uniformly mixing the raw materials; putting the mixture into an opener for opening, combing and shaping the obtained product, feeding the product into a lapping machine for cross lapping and feeding the cross-lapped product into a needling machine for needling to form a felt; immersing the fiber felt into a processing slurry; drying the immersed coiled material through hot blast and cutting the dried material into pieces of required size; placing the cut material into a mould for curing and shaping by heating; demoulding the material to form a composite plate; and softening the composite plate by flat panel heating, covering the plate with a surface decorative layer and performing cold molding on the plate through a product mould to manufacture the finished product finally; or softening the cut fiber felt by the flat panel heating directly, covering the plate with the surface decorative layer and performing the cold molding to manufacture the finished product finally. The composite material for the automobile interior part of the invention has the advantages of no toxicity, no pollution, simple processing technique, small energy consumption and high environment protection performance.

An indirect solid free form scaffold manufacturing technique is provided. More particularly, the present invention provides a set of molds, casting methods, mold removals, and surface modification techniques that are compatible with image-based design methods and with solvent, melt, and slurry casting of polymers and ceramics.

The invention discloses a method for manufacturing dentate special-shaped ceramic components by injection molding, belonging to the technical field of high-performance ceramic preparation. The methodcomprises the following steps: evenly mixing 81wt% to 90wt% of ceramic powder and 10wt% to 19wt% of organic binders by weight percentage to obtain an injection-molding mixture, injection-molding the injection-molding mixture on an injection-molding machine with the injection temperature being 175 to 195 DEG C, to obtain a green body, and de-molding within 2 minutes after the injection, so as to obtain a molded green body; and then, subjecting the molded green body to water-extraction degreasing and thermal degreasing, sintering the degreased green body at 1,350 to 1,550 DEG C, holding for 1 to4 hours and furnace-cooling to obtain the ceramic components. The invention has the advantages of high automation degree, high molding and degreasing efficiencies, even green body, high dimensional accuracy and surface smoothness of sintered products, and environment-friendly and energy-saving manufacture.

The invention discloses a vacuum assisted molding system of a composite, which comprises an open shaping mold comprising an upper mold and a lower mold, wherein a vacuum bag-pressing system is connected on the lower mold in a sealing manner; and a mold-pressing heating system is connected outside the mold. The invention also discloses a method for shaping a composite article by vacuum assisted molding, which comprises the following steps: preparing the open shaping mold and placing a prepreg on the lower mold, paving an isolating film, a piece of mold releasing cloth, and a breathable felt in turns, connecting a vacuum bag film in a sealing manner, and communicating a formed vacuum bag-pressing cavity with a vacuum pump; connecting the upper mold and the lower mold to the mold-pressing heating system; assembling the upper mold and the lower mold under a condition of keeping a vacuum bag pressing status, molding and pressing the prepreg by the mold-pressing heating system and heating the upper mold and the lower mold at the same time, and carrying out curing treatment after reaching a curing temperature; and after finishing the curing reaction, molding to obtain the composite article. According to the invention, the process cost is low, the generality is high, the consumption of auxiliary materials is little, and the use performance of the product can be improved.

Provided is an ablation-resistant lightweight integrated composite material with a thermal insulation function. The composite material is of a sandwich structure, the middle layer adopts a chopped fiber as a reinforcing body, phenolic resin as a substrate and hollow microbeads as thermal insulation fillers, upper and lower surface layers are bonded to each other by a fiber cloth pre-impregnation material, and the three layers are cured to improve the bearing capacity and the anti-scouring capacity. The preparation method of the composite material comprises eight steps including ceramic powdertreatment, pretreatment of the chopped fiber and a fiber cloth, mixing, drying, slurry preparation, brushing or impregnation, mold filling, curing formation and demolding. The composite material can be applied to the ablation working condition of medium and low heat flux density; the composite material is formed at one time, so that the preparation cycle is short, and the cost is low; a stable ablation-resistant ceramic layer can be formed on the surface in a temperature range from 800 DEG C to 1,300 DEG C, and meanwhile, low-density fillers such as the hollow microspheres achieve a thermal insulation function. In this way, the integrated thermal insulation function under the conditions of medium and low heat flux density and oxidation is achieved.

The invention provides a microneedles array, a method for manufacturing the microneedles array and a die for manufacturing the microneedles array. The microneedles array comprises a base and a plurality of microneedles which are integrated with the base, wherein a liquid storage cavity is arranged in the base, and each microneedle are provided with micro-pinholes which are communicated with the liquid storage cavity; the microneedles array is made of plastics, composite materials, and ceramics or metal materials by injection molding; and each microneedle has at least one inclined surface which is inclined towards the central line of the microneedle, and the outlet of each micro-pinhole is positioned on at least one inclined surface, so that the end of the outlet of the microneedle forms a pinnacle part. The die specialized for the invention comprises an upper die, a middle die and a lower die, wherein the middle die and the lower die are provided with cavities for forming the microneedles; and the upper die and the middle die are provided with grooves for forming the base. The three-plate die of the invention can be used for conveniently manufacturing the microneedles array with the pinnacles. Since the stripping process in the injection molding method is carried out step by step, the method has the advantages of small die drawing resistance and low manufacturing cost.

A method of decorating a molded article is provided in which a mold insert, the mold insert, comprising a plurality of flock fibers, a heat resistant release sheet, a release adhesive, a permanent adhesive layer, and a forming film is thermoformed. During thermoforming, the heat resistant release sheet is positioned between a surface of a forming mold and the flock fibers to protect the flock fibers from overheating.

A method for automatically shaping the load-bearing hollow brick includes such steps as preparing concrete, stirring, filling in mould, inserting core mould while vibrating, hydraulic pressing, and demoulding. Its apparatus is composed of electric power control box, control mechanism, motor, concrete preparing system, shaping system, feeding unit, and discharging unit.

The invention relates to a feed for lambs. The feed comprises the following components in parts by weight: 250-350 parts of corn, 150-300 parts of bean pulp, 20-50 parts of wheat bran, 50-80 parts of fish powder, 30-60 parts of milk powder, 80-150 parts of flour, 20-40 parts of protein powder, 30-80 parts of soybean oil, 20-50 parts of table salt, 50-120 parts of mold removal agent, 30-80 parts of traditional Chinese medicine additive, 20-50 parts of additive for sheep, 10-30 parts of complex acid and 5-20 parts of feeding attractant. The feed has the following beneficial effects: the immunities of the lambs can be improved; and the feed can resist mycotoxin attack and satisfy the nutrient requirements and energy supply in the lamb growth and development process.

The invention provides a pair of anti-slip breathable operating gloves and a preparation method thereof. The preparation method comprises the steps that 1, macromolecular emulsion is prepared; 2, a mold is sleeved with an inner container of each glove, the inner container of each glove is immersed into the prepared macromolecular emulsion to form a macromolecular coating after pretreatment; 3, water-soluble granular crystals are sprayed on the surface of the unsolidified macromolecular coating, then drying treatment is performed, and the water-soluble granular crystals on the surface of the unsolidified macromolecular coating are dissolved with water; 4, the inner containers of the gloves treated in the step 3 are subjected to coating drying, vulcanization and demoulding treatment to obtain glove products. The macromolecular coating is formed on the inner container of each glove, the water-soluble granular crystals are sprayed on the surface of the unsolidified macromolecular coating, the water-soluble granular crystals are dissolved with water after the macromolecular coating solidifies, accordingly a large amount of micropores are formed on the macromolecular coating so as to form a concave-convex structure, and the gloves have an excellent anti-slip effect, good breathability, softness and abrasion resistance.

The invention belongs to a magnesium alloy wheel multi-directional forming method and a die. The method is characterized by comprising the working procedures of blanking, upsetting, multi-directional extrusion, forward extrusion, flaring, heat treatment, machining and surface treatment, in the working procedures of the multi-directional extrusion, the forward extrusion and the flaring, axial pressure is applied to an axial male die so as to complete the forming of a magnesium alloy wheel, and lateral pressure drives a lateral male die to be connected with a split female die so as to complete the clamping and splitting of the split female die. The method solves the problems of forming and demoulding of a round wheel with small middle part and two large ends, has the advantages of simplifying the technical processes, improving the production efficiency, preventing the generation of burr flash, having high forming precision and the like.

The invention relates to a method for preparing a carbon fiber grid based on the SQRTM molding process of a water-soluble core. The method first prepares a grid core with a soluble material, and lays carbon fiber prepreg on it, and adopts SQRTM molding The process is to solidify the part, and in the later stage, the water-soluble mandrel is dissolved by tap water under a certain pressure, and the grille part is obtained by demoulding. This method solves the demoulding problem of complex parts with high curvature of the grid. The SQRTM process adopted, combined with the prepreg process and liquid RTM molding technology, effectively reduces the manufacturing cost and guarantees The high performance requirements of the parts are met. This invention can provide a feasible solution for composite aviation complex curvature parts.

The invention relates to a jig for manufacturing components of aerodynes and wind turbines and a manufacturing process for these components, the jig comprising a base (10), on which at least one rigid part (7) like a flange is arranged in the upper edge of at least one of the sides, which rigid part is connected to the base (10) through an elastic hinge (8), which can driven to pivot between a raised closed position and a lowered open position, for the molding and demolding of the components to be manufactured by means of incorporating fiber strip layers on the surface that they determine between the base (10) and the flange or flanges (7).

The invention discloses a production technology for a glass reinforced plastic hand washer and a face washing cabinet. A method comprising the steps of split pasting, cutting, polishing and then assembling is mainly adopted. The production technology comprises the following steps: (1) manufacturing a hand washer/face washing cabinet wood mould: firstly selecting materials, dividing the product into three parts, namely, a hand washer/face washing cabinet platform, a vertical surface and a check surface, according to the dimension of the product, respectively manufacturing the wood mould, coating putty and polishing; (2) manufacturing a glass reinforced plastic mould: coating release agent and gel coat, and then pasting; (3) treating the surface of the glass reinforced plastic mould: performing water sand grinding and surface polishing; (4) pasting; (5) de-molding; and (6) cutting and assembling. The production technology is low in production cost and shorter in production period. The produced glass reinforced plastic hand washer and face washing cabinet are highly polished.

The invention provides a construction method of railway tunnel lining side wall concrete. Firstly concrete for an inverted arch and the inner part of the inverted arch is constructed, then sleepers are placed, and a lining trolley traveling track is laid; a lining trolley is moved to a place to be lined, molding boards are connected to the top of a gantry, and end of hydraulic oil cylinders and jacks at two sides; the side hydraulic oil cylinders at two sides are started to regulate the molding boards at two sides of the lining trolley to the design positions, and all side jacks are locked to fix the side molding boards; short side wall molding boards at two sides of a tunnel are respectively mounted, the upper end heads of the short side wall molding boards are connected with the lower ends of arc-shaped molding boards at two sides to form a molding board assembly, and the molding board assembly is mounted at one end of the jack on a water groove side wall to be mounted with one side of the short side wall molding board; and then the concrete is cast and lined, and the cast lined concrete is dismounted with the mold after reaching the strength of mold removal. The construction method reduces procedures and shortens the erection time, saves the construction cost, and enhances the structure of the tunnel lining side wall and improves the external quality.

A plant officinal hollow capsule comprises following components by weight percentage composition: 50% to 70% of arrowroot part zymolyte, 20% to 45% of a reinforcing agent, 0% to 6% of gelata, 0% to 10% of a plasticizing agent, 0% to 1% of a coagulant agent, 0% to 1% of a dispersing agent, 0% to 0.1% of food colorant and the balance water. The preparation method comprises the steps of (1) mixing the arrowroot part zymolyte with the reinforcing agent, the plasticizing agent and the food colorant; (2) adding the gelata into deionized water, boiling until the gelata completely melts, and adding the coagulant agent; (3) mixing two parts of the step (1) and the step (2) when the two parts are hot, adding the dispersing agent, stirring evenly, standing and removing air bubbles to achieve mixed liquid; (4) preparing the capsule through a capsule mold in a mold dipping method; and (5) demolding to obtain the plant officinal hollow capsule. The capsule can meet index standards of officinal capsules, can be used for accommodating powder, oil-shaped liquid, semisolid and paste, cannot be soft and deform in summer due to high temperature or be fragile in winter due to coldness and dry.

The invention discloses a mold removal agent for feed and a preparation method and a feed additive thereof, belonging to the field of feed additives. The mold removal agent contains modified montmorillonite, yeast cell walls, chitosan, citric acid and Chinese herbal medicinal ingredients, wherein the Chinese herbal medicinal ingredients are prepared from poria cocos, rhizoma alismatis, grifola, cinnamomum cassia, rhizoma atractylodis macrocephalae and rhizoma imperatae. The mold removal agent can be used for removing mold for feed raw materials such as corn and grains and compound feed polluted by mycotoxin so as to prevent livestock and poultry from having various diseases as the livestock and poultry eat the feed polluted by the mycotoxin. The mold removal agent can reduce the absorption of the mycotoxin in the bodies of animals and meanwhile enhances the detoxification ability and the self regulating function of the bodies of animals, achieves the purpose of treating both symptoms and root causes. The mold removal agent has the characteristics of significant curative effect, safety in use, specific effect, stable preparation, controllable quality and simple preparation process, is suitable for industrial production and is convenient to feed.

An imprint method of transferring a pattern formed on a mold onto a resin on a substrate. The substrate is held on a holding surface in a holding step. A shape of a substrate-side pattern area where the pattern is formed on the substrate is deformed in a deforming step. A resin on the deformed substrate-side pattern area is brought into contact with the mold in a contacting step. The resin is cured in a curing step, and the mold is released from the resin in contact with the mold in a mold-releasing step. In the deforming step, a deformation force, which is greater than a maximum static frictional force acting between a rear surface of the substrate corresponding to the substrate-side pattern area and the holding surface, is applied to the substrate in a direction along the surface thereof.

The invention relates to a micro closed-cell light-weight corundum refractory aggregate and a preparation method thereof. The technical scheme is as follows: the preparation method comprises the following steps: by using 45-65 wt% of gamma-Al2O3 fine powder, 30-50 wt% of alpha-Al2O3 micropowder and 1-10 wt% of nano aluminum oxide micropowder as raw materials, adding water accounting for 40-80 wt% of the raw materials, and carrying out wet milling with a planet ball mill for 0.5-3 hours; putting the slurry subjected to wet milling in a mold, standing at room temperature for 12-24 hours, and stripping; and drying at 110-200 DEG C for 12-36 hours, and keeping the temperature at 1750-1900 DEG C for 1-8 hours to obtain the micro closed-cell light-weight corundum refractory aggregate. The micro closed-cell light-weight corundum refractory aggregate has the characteristics of low apparent porosity, high closed porosity, low volume density, small average pore size, lower heat conductivity and high molten slag erosion resistance.