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47results about How to "Accurate Uniformity" patented technology

Quantitative gluing amount control device

The invention discloses a quantitative gluing amount control device. The control device comprises a coating roller and auxiliary rollers arranged at two sides of the coating roller, wherein the coating roller is provided with a displacement sensor. The control device also comprises a scraper component arranged below the coating roller, wherein the scraper component is composed of a front scraper, a back scraper and a scraper holder; a feeding groove is formed between the front scraper and the back scraper; a feeding cavity is formed among the front scraper, the back scraper and the coating roller; a glue groove is formed inside the scraper holder; the upper part of the glue groove is communicated with the feeding groove through a glue solution channel, and the lower part of the glue groove is connected with a glue storage tank via a feeding pump through a feeding pipe; a substrate to be coated is placed in the feeding cavity so as to be coated, and the gap between the front scraper and the coating roller, and the gap between the back scraper and the coating roller are adjusted by the front scraper and the back scraper moving along the vertical direction. The control device is capable of accurately controlling the gluing amount and the gluing uniformity, and automatically adjusting the feeding flow according to the change of the gluing amount or the speed of a production line.
Owner:苏州市益维高机器制造有限公司

Recombinant human alanine aminotransferase protein standard, recombinant human aspartate aminotransferase protein standard, and preparation methods thereof

The invention relates to preparation of standards, and particularly relates to a recombinant human alanine aminotransferase protein standard, a recombinant human aspartate aminotransferase protein standard, and preparation methods thereof. A nucleotide sequence of encoding the recombinant human alanine aminotransferase protein standard is shown in SEQ ID NO:3; the nucleotide sequence of encoding the recombinant human aspartate aminotransferase protein standard is shown in SEQ ID NO:6. The invention also relates to the preparation method of the recombinant human alanine aminotransferase protein standard or the recombinant human aspartate aminotransferase protein standard. The preparation method comprises the following steps: obtaining a target gene; building a gene expression strain; expressing and purifying target protein; processing matrix serum, evaluating the standard, and evaluating a constant value and the uncertainty of the standard. The recombinant human alanine aminotransferase protein standard and the recombinant human aspartate aminotransferase protein standard prepared by adopting a gene recombination technique disclosed by the invention can be applied to clinical test of a laboratory and mass control of a kit.
Owner:NAT INST FOR FOOD & DRUG CONTROL

Nicotine transdermal preparation and production method thereof

The present invention provides a production method of a nicotine transdermal preparation, which is capable of producing a nicotine transdermal preparation conveniently and economically, while maintaining highly precise content uniformity, which is capable of producing a preparation simultaneously achieving fixedness and a soft feeling during adhesion, associated with reduced skin irritation upon peeling off and superior in adhesive property. The present invention provides a nicotine transdermal preparation superior in content uniformity, simultaneously achieving fixedness and a soft feeling during adhesion, and showing reduced skin irritation upon peeling off. The present invention provides a method of producing a preparation containing a support and an adhesive layer formed thereon, which adhesive layer containing nicotine and a liquid ingredient compatible with the adhesive, which method includes (1) providing the adhesive layer wherein a contact angle of nicotine with the adhesive layer before containing nicotine is 20-60°, and (2) applying nicotine to the adhesive layer to allow absorption of nicotine into the adhesive layer, as well as a preparation containing a support and an adhesive layer formed thereon, which adhesive layer including nicotine and a liquid ingredient compatible with the adhesive, wherein a contact angle of nicotine with the adhesive layer before containing nicotine is 20-60°.
Owner:NITTO DENKO CORP

Tracer agent addition device with continuous mixing machine

The invention relates to the technical field of materials, and particularly relates to a continuous mixing tracer agent addition method for testing uniformity. The tracer agent addition device comprises the continuous mixing machine, wherein a tracer agent addition port is arranged in the side wall of a feeding port of the mixing machine and is provided with an atomizing nozzle which is sequentially connected with an infusion pump and a stirring device through a pipeline, wherein a flowmeter and a pressure detecting element are aslo arranged on the pipeline, and a regulating valve is arranged on the atomizing nozzle. When mixing uniformity is determined, after the mixing machine normally works, a tracer agent solution with certain concentration is mixed in a stirring tank and then is added to the mixing machine at a certain flow speed through the atomizing nozzle according to the capacity of the mixing machine, a sample is drawn from a discharging hole of the mixing machine, and the mixing uniformity of the sample is determined according to a national standard GB/T5918-2008 feed-product mixing uniformity determination method. The tracer agent addition device solves the problem that the uniformity indicator of the continuous mixing machine in the prior art cannot be accurately and really detected.
Owner:牧羊有限公司
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