4results about How to "Realize customized production" patented technology

The invention relates to the technical field of regenerated fiber manufacturing, in particular to a method for preparing filament fibers from waste PET (polyethylene terephthalate) materials, which comprises the following steps: raw material pretreatment, ultrasonic-assisted depolymerization, continuous polymerization and functional modification, melt direct spinning, grinding of waste yarns in a chemical fiber factory, crushing of waste PET bottles, grinding after cleaning, and obtaining of PET powder; the method comprises the following steps: mixing PET powder with ethylene glycol according to a molar ratio, generating BHET under the action of ultrasonic waves, sequentially carrying out esterification, pre-polycondensation and final polycondensation on the BHET to obtain a regenerated PET melt, adding a modified additive in the esterification reaction, spinning the regenerated PET melt by adopting a one-step process, cooling by cooling air, and winding to obtain the filament fiber. The problems that traditional regenerated PET fibers are single in raw material, complex in process and insufficient in performance are solved, low-cost and high-efficiency preparation of semi-dull, flame-retardant, cationic dyeable and other multifunctional products is achieved, and high-value utilization of waste PET is improved.

The invention discloses a preparation process of a skin-friendly thin film of a special skin drawing. The process comprises the steps of preparation of a gauze braided fabric, shaping of the braided fabric, fixing of a frame, accurate alignment, alignment calibration, primary polymer permeation, silk screen sleeve printing, curing forming, multi-round circulation and forming of a skin-friendly layer. The base layer is prepared from a modified polydimethylsiloxane elastic polymer, the skin-friendly layer is formed by a special modified polydimethylsiloxane superelastic polymer, and functions and skin-friendly performance are both considered; and by combining multi-machine-head silk-screen printing, multi-temperature-section curing and multi-round process circulation, customization of the number of layers, the thickness and the function of the thin film is achieved. The method has the advantages of whole-course numerical control automation, stable production, high efficiency, low cost, suitability for industrial batch production, stable film structure, long service life and good use experience.

This invention discloses a goal-oriented method for the targeted cultivation of selenium-enriched shiitake mushrooms, belonging to the technical field of edible fungi cultivation and functional foods. The method includes the following steps: adding exogenous selenium to the cultivation substrate during the fruiting body cultivation stage of shiitake mushrooms; the exogenous selenium is selected from nano-selenium or sodium selenite; different selenium sources are selected according to the target selenium enrichment requirements: (a) when the goal is to increase the yield of shiitake mushroom fruiting bodies, nano-selenium is selected; (b) when the goal is to increase the total selenium content or bioavailability of selenium in shiitake mushroom fruiting bodies, sodium selenite is selected. This invention provides clear selenium source selection schemes for three different commercial needs: "high yield," "high selenium," and "high absorption," filling a technological gap in the shiitake mushroom field. Producers can flexibly choose according to market demand, realizing precise and customized production of selenium-enriched shiitake mushrooms.

The utility model discloses a tool switching mechanism for multi-vehicle type production, which comprises two symmetrically arranged long mounting plates, a plurality of first three-axis heavy-load NCs are arranged on the long mounting plate on one side, a plurality of second three-axis heavy-load NCs are arranged on the long mounting plate on the other side, positioning mechanisms are arranged at the tail ends of the first three-axis heavy-load NCs, and a plurality of second three-axis heavy-load NCs are arranged at the tail ends of the second three-axis heavy-load NCs. A replaceable clamp mechanism is arranged on the positioning mechanism; an air cylinder clamp assembly is arranged at the tail end of the second three-axis heavy load NC; when vehicle types are switched, only corresponding clamp mechanisms need to be replaced, a large number of clamps do not need to be manually disassembled and installed one by one, the tool switching time is greatly shortened, the production efficiency is improved, the problems that traditional tool switching is inconvenient and time-consuming are effectively solved, and the efficient production requirement for collinear production of multiple vehicle types is met.