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61results about How to "Intrinsic quality is stable" patented technology

Method for processing regenerated polyester staple fiber by using waste polyester textile

The invention relates to a method for producing regenerated polyester staple fibers, in particular to a method for processing regenerated polyester staple fibers through a physical method by using waste polyester textiles. The method for processing regenerated polyester staple fibers by using waste polyester textiles comprises the following steps of: conducting color matching, proportioning and drying to friction materials produced by using the recovered waste polyester textiles; squeezing and fusing the dried friction materials to obtain fusant; primarily filtering the fusant, feeding the fusant into a high-vacuum tempering and viscosity-regulating reaction kettle; filtering the fusant, feeding the fusant into a spinning manifold and metering spinning; and after spun nascent fibers are bundled, conducting oiling through a dipping tank and a drawing tank, steam secondary drawing, overlapping, curling, relaxed heat setting, cutting and packing to obtain the regenerated polyester staple fibers. By adopting the method for processing regenerated polyester staple fiber by using waste polyester textiles, the technical problem of producing high-quality regenerated polyester staple fibers by using the recovered textiles is solved, the cost of raw materials for producing the regenerated polyester staple fibers is decreased and the problem of recovering the waste polyester textiles is solved.
Owner:余姚大发化纤有限公司

Slice control method of vertical slice cutter

The invention discloses a slice control method of a vertical slice cutter, comprising the steps: firstly, making corresponding slice control modes of the prior cigarette packets of various specifications and dimensions according to production requirements; inputting the slice control modes into an automatic control system; automatically identifying the slice control modes of the cigarette packetsafter the cigarette packets of certain specifications enter a production line; and slicing and processing the cigarette packets according to the identified specifications and dimensions by the automatic control system in the corresponding slice control modes. If the cigarette packets of new specifications and dimensions are brought into a factory, the corresponding slice control modes of the cigarette packets of the new specifications and dimensions are made according to the production requirements and are inputted into the automatic control system for realizing the automatic control over thecigarette packets of the new specifications and dimensions. The invention achieves the consistency between slice times and flow rate, avoids the fluctuation of the flow rate and water due to different specifications and dimensions of the cigarette packets, solves the single control mode of processing slices, stabilizes the internal quality of cigarette products, promotes the stable enhancement ofslice processing quality, ensures the internal quality of tobacco in the process of making the tobacco and is suitable for making the slices of the cigarette packets with different tobacco specifications and dimensions.
Owner:HONGTA TOBACCO GRP

Preparation method of silybum marianum total flavonoid as active ingredient of swertia pseudochinensis-silybum marianum liver benefiting product

InactiveCN101721448AImprove leaching effectThe concentration of the extract increasesMetabolism disorderDigestive systemSolventChemistry
The invention discloses a preparation method of silybum marianum total flavonoid as an active ingredient of a swertia pseudochinensis-silybum marianum liver benefiting product. In the method, ordinary percolation used by silybum marianum in an original national pharmaceutical standard is changed into vacuum pressure percolation, namely the method comprises the following steps of: vacuumizing squeezed oil-free silybum marianum powder, then adding 80 percent ethanol in a vacuum state and dipping; then pressurizing and percolating; recovering the ethanol of percolating liquid; and concentrating and drying to obtain the silybum marianum total flavonoid. The pressurizing and percolating method improves the speed of a solvent for immerging plant tissue cells so as to ensure that active ingredients are quickly leached to improve the leaching quantity of the active ingredients, and the percolating process is smoothly carried out. The method ensures that the content of the active ingredient, namely the silybum marianum total flavonoid, in the swertia pseudochinensis-silybum marianum liver benefiting product is obviously improved so as to be beneficial to improving the quality of the swertia pseudochinensis-silybum marianum liver benefiting product and enhancing the clinical treatment effect of the medicament.
Owner:SICHUAN MEDCO PHARML

Method for processing recycled polyester staple fibers from waste polyester textiles

The invention relates to a method for producing regenerated polyester staple fibers, in particular to a method for processing regenerated polyester staple fibers through a physical method by using waste polyester textiles. The method for processing regenerated polyester staple fibers by using waste polyester textiles comprises the following steps of: conducting color matching, proportioning and drying to friction materials produced by using the recovered waste polyester textiles; squeezing and fusing the dried friction materials to obtain fusant; primarily filtering the fusant, feeding the fusant into a high-vacuum tempering and viscosity-regulating reaction kettle; filtering the fusant, feeding the fusant into a spinning manifold and metering spinning; and after spun nascent fibers are bundled, conducting oiling through a dipping tank and a drawing tank, steam secondary drawing, overlapping, curling, relaxed heat setting, cutting and packing to obtain the regenerated polyester staple fibers. By adopting the method for processing regenerated polyester staple fiber by using waste polyester textiles, the technical problem of producing high-quality regenerated polyester staple fibers by using the recovered textiles is solved, the cost of raw materials for producing the regenerated polyester staple fibers is decreased and the problem of recovering the waste polyester textiles is solved.
Owner:余姚大发化纤有限公司

Construction method and detection method of UPLC characteristic chromatogram of lophatherum gracile medicinal material

The invention relates to a construction method and a detection method of a UPLC characteristic chromatogram of a lophatherum gracile medicinal material. The construction method of the characteristic chromatogram comprises the following steps: preparing a reference substance solution of control samples from isoorientin and swertiajaponin as the control samples; preparing a reference substance solution of a control medicinal material from a lophatherum gracile control medicinal material; taking a lophatherum gracile medicinal material and a standard decoction sample respectively, adding an extraction solvent for extraction, carrying out filtering, and taking the obtained filtrate as a test sample solution and a standard decoction test sample solution; sucking the reference substance solutionof the control samples, the test sample solution and the standard decoction test sample solution respectively, and injecting the solutions into an ultra-high performance liquid chromatograph for measurement; and comparing the obtained test sample chromatogram with a standard decoction test sample chromatogram and calibrating characteristic peaks of four water-soluble components to obtain the UPLCcharacteristic chromatogram of the lophatherum gracile medicinal material. The characteristic chromatogram can be used for qualitative and quantitative analysis of the quality of the lophatherum gracile medicinal material, can ensure the quality of a lophatherum gracile traditional decoction prepared from the medicinal material, and is also suitable for detection of other preparations containinglophatherum gracile.
Owner:GUANGDONG YIFANG PHARMA +1

Multi-element low-alloying treatment method for high-strength gray cast iron

PendingCN113403443AStable melting qualityStable control of melting qualityProcess efficiency improvementChemical compositionBloomery
The invention discloses a multi-element low-alloying treatment technical method for high-strength gray cast iron, and belongs to the technical field of casting. The method comprises the following steps of A, determining the components and proportion of furnace charge in a high-strength gray iron casting, a matching method and content range of various alloy elements and a content range of conventional chemical elements according to the requirements of a to-be-produced casting; B, determining a melting process procedure of the high-strength gray iron casting; C, preparing materials, charging, heating and melting according to the requirements of "cast iron melting burdening process sheet"; D, sampling and analyzing the chemical components of an iron liquid in a furnace, and adjusting the chemical components of the iron liquid in the furnace; E, carrying out molten iron treatment and tapping pouring; and F, detecting the material performance of the high-strength gray iron casting. The method provides a simple and feasible chemical component determination, melting burdening and alloy liquid treatment method, so that alloy element matching, cast iron melting burdening and alloying treatment of the high-strength gray cast iron are more accurate and convenient, and cast iron melting operation control is more reasonable and feasible.
Owner:HEBEI HUABEI DIESEL ENGINE
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