Laminar-flow-coating technique

Belleville P, Bonnin C, Priotton J-J (2000) Room-temperature mirror preparation using sol-gel chemistry and laminar-flow coating technique. J Sol-Gel Sci Technol 19(1—3) 223-226... 

When investigators work with chemicals and nucleic acids, they always wear a suitable lab coat, disposable gloves, and protective goggles. Perform all steps of protocol in a laminar flow cell culture hood using sterile techniques. 

Products to be handled under sterile conditions shall be protected from every risk of contamination by means of suitable techniques, such as for example laminar flow, and by assuring that the personnel wears clean and sterilized lab coats, headcoverings, masks, gloves and overshoes. 

Coextrusion is an important technique for producing a well-bonded, multilayer product as sheet, film, tubing, wire coating, and most of the other forms made by conventional extrusion Such structures can be made to combine the properties of the resin used in each layer (e.g, gas barrier capability, moisture resistance, lower cost, chemical resistance, etc.). Because melt flow downstream of the extruder screw is invariably laminar, if two or more polymer streams can be combined as layers in a suitable die system, it is possible for them to emerge from the die in the same... 

---