45results about How to "Guaranteed sterility requirements" patented technology

The invention discloses a fresh-air air purification process. The fresh-air air purification process mainly includes the process steps of fresh air, primary filtration, gas storage disinfection, gas storage, high temperature deodorization, water bath impurity-removing and deodorization, refrigeration dehumidification, secondary filtration, detection, tertiary filtration, detection and discharge topurify fresh air, and the problems that part of bacteria which is not removed completely and is carried by fresh air can breed after entering a room, it is difficult to guarantee the bacteria-free requirement of the environment where people are not suitable to leave after entering or in special places where disinfection or sterilization is not easy to use are solved. The fresh air disinfects or sterilizes the air before discharging, so that the part of the bacteria which is not removed completely and is carried by the fresh air is killed before entering the room, the problem that after the fresh air is discharged into the room and bacteria grows in the room is solved, and the bacteria-free requirement of the environment where people are not suitable to leave after entering or in the special places where disinfection or sterilization is not easy to use is guaranteed.

The invention relates to a high-barrier medical film which is prepared from five layers of resin materials through coextrusion, wherein the first layer is a heat sealing layer as an inner layer A and comprises the components of high-melting-point metallocene polypropylene and ethylene-octene copolymer (EOC) through mixing, and the addition quantity of the EOC in the mixture is 10%-30%; the second layer is a barrier layer as a secondary inner layer B and comprises the component of cycloolefin copolymer; the third layer is a core layer as an intermediate layer C and comprises the components of polypropylene and styrene-ethylene-butylene-styrene (SEBS) through mixing, and the addition quantity of the SEBS in the mixture is 20%-40%; the fourth layer is an adhesion layer as a secondary outer layer D and comprises the component of anhydride modified polypropylene copolymer; and the fifth layer is a weather-proof layer as an outer layer E and comprises the component of a segmented copolymer of polyethylene naphthalate and polyethylene terephthalate. A soft bag made of the medical film has good barrier performance, optical performance and safety performance, and is especially suitable for being used as a packaging material of therapeutic transfusions, nutrition transfusions, powder injections and small-volume injections.

The invention discloses a fresh air purification process, which mainly includes fresh air, primary filtration, gas storage disinfection, gas storage, high temperature deodorization, water bath impurity and deodorization, refrigeration and dehumidification, secondary filtration, detection, tertiary filtration, detection, Discharge several process steps to purify the fresh air. Some of the bacteria carried by the fresh air can multiply after entering the room. It is not suitable for some personnel to leave the room after entering or in a special place where it is not easy to use disinfection or sterilization. The aseptic requirements of the environment are difficult to guarantee. The fresh air disinfects or sterilizes the air before it is discharged, so that some of the bacteria carried by the fresh air that have not been eliminated are killed before entering the room, so there is no need to worry about the fresh air being discharged into the room. The room regrets the growth of bacteria in the room, which ensures the aseptic requirements for the environment in rooms where some personnel are not suitable to leave after entering or in special places where it is not easy to use disinfection or sterilization.

The invention relates to a three-layer coextrusion film for medical infusion, which is low in cost, nontoxic, good in bonding property, air barrier property, flexibility and weatherability, high in heat-seal strength and transparency and easy to process, and comprises an inner layer A, a bonding layer B and an outer layer C, wherein the inner layer A is made from polypropylene random copolymer that is good in heat sealability and flexibility and high in transparency; the bonding layer B is made from ethylene-vinyl acetate copolymer containing 10%-40% of vinyl acetate; the outer layer C is a weather-proof layer and is made from PVC (polyvinyl chloride) resin that is low in cost, weather-proof, transparent and soft; and the mass of a plasticizer accounts for 30%-60% of that of the outer layer C. A three-layer coextrusion casting unit is the main production equipment of the film, the interface instability due to unmatched rheology in multilayer coextrusion is effectively avoided by controlling the processing temperature and processing flowability of all layers of resin materials, and the production efficiency and product quality are greatly improved.