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Box of 1 US gallon (3.7 L) Ziploc bags. At that time, plastic bags were being produced in 25 countries at a line speed of 30 feet per minute, but none were being sold to consumers, because they were too expensive to produce. Dow assigned one of their inventors, R. Douglas Behr, to develop a high-speed, efficient process.
A Ziploc-branded storage bag Close-up from a cross section of the sealing mechanism. A zipper storage bag, slider storage bag, zipper bag, ziplock bag, zip-lock bag, ziploc bag, or zippie is an inexpensive flexible rectangular storage bag, usually transparent, made of polyethylene [1] [2] or similar plastic, that can be sealed and opened many times, either by a slider, which works in a similar ...
Tannic acid chemically converts the reddish iron oxides into bluish-black ferric tannate, a more stable material. [2] The second active ingredient is an organic solvent such as 2-butoxyethanol (ethylene glycol monobutyl ether, trade name butyl cellosolve) that acts as a wetting agent and provides a protective primer layer in conjunction with an ...
Demulsifiers, or emulsion breakers, are a class of specialty chemicals used to separate emulsions, for example, water in oil. They are commonly used in the processing of crude oil , which is typically produced along with significant quantities of saline water.
[1] [2] [3] Formulations may be designed to remove a broad range of adhesives or to address a specific bond. [1] Many general purpose removers are intended to remove residue from adhesive tape . [ 1 ] [ 2 ] [ 3 ]
Ziploc and Zip-Pak are manufacturers specializing in these products, the latter employing a slider to open and close the bag. [1] The zip component of the packaging is supplied on a continuous roll, and is inserted between the upper and lower webs of the plastic film provided with the packaging.
For many metal cutting applications the ideal has long been high-pressure, high-volume pumping to force a stream of liquid (usually an oil-water emulsion) directly into the tool-chip interface, with walls around the machine to contain the splatter and a sump to catch, filter, and recirculate the fluid.
The intent of vacuum packing is usually to remove oxygen from the container to extend the shelf life of foods and, with flexible package forms, to reduce the volume of the contents and package. [ 2 ] Vacuum packing reduces atmospheric oxygen, limiting the growth of aerobic bacteria or fungi , and preventing the evaporation of volatile components.