makes periodic visits to the mills control starts with the first manufacturing step the scouring process raw wall is early clean and prepared for later processing the cleaned well is then carted a process which removes the shorter fibers the material unsuitable for high quality well and and the range of the long vibrators so they can be spun into yarn spinning draw of the world fibers out and twist them into the sturdy yarns required for blanket weaving the spun wall is woven into blanketing material on why below hundreds of them all working at once in a large factory like this the blanket fabric is washed early to remove the dirt and processing on so it will take the dye evenly dying is an essential step in making high quality blanket while the color must remain true through many years of service and on the spot checked by the laboratory had indicated the importance of this chemical treatment and effect millions of tiny air pockets in the net finally the fabric is cut into the proper size and the blankets are bound and folded ready to start on their journey to the retail stores production samples must pass many tests including strength weight shrinkage color fastness all the finished merchandise merits this laboratory tested and approved seal here's how the laboratory tests that most important quality of a blanket its ability to retain more to keep the customer warm the technician establishes the amount of electricity needed to keep the cylinder at body temperature for one the amount of electricity it now takes to keep a cylinder of body temperature for one hour is measured and the difference between the two readings is an accurate measure of the one retaining quality of life must damage is an ever present menace to world the hungry larva of these blind mobs can ruin a blanket damage can be prevented by treatment with an you know one of several tested processes known to be effective these two sample strips of blanket ha exposed to the action of moth larva for the same length of time the nap of the under rated sample has been practically eaten away while the treated sample remained untouched despite the presence of larva like those you see here to make sure that sufficient moth resistant chemical has been used samples from every production lot are tested the samples are dissolved in acid distilled and the resulting distillate analyzed to provide a positive check these tests provide a steady stream of facts and figures which finally take their place on labels like this or the customer's information and protection now let's see what has to be taken into account in producing fuel to meet the just imagine what it takes to make a shoe which can take the treatment it gets from an active growing boy and at the same time children incomes and many occupations providing what the customer one concern of the shoe buyer considers carefully many styles and designs and discusses all the details with the shoe with bacteria are allowed to grow and develop meanwhile let's see how the treated mother resist mold to assemble strips were kept in contact with mold spores  sanitize samples as completely resistant mold growth wildly untreated several shows what would have happened to an untreated shoe subject to the same conditions here are the results of the test made with bacteria know they've grown right up to and under the under rated samples on the left while the treated samples have remained unaffected sanitizes actually created a sort of safety zone a clear circle around each sample where bacteria could not and did not grow this process is especially important in work quality control applies not only to work shoes but to work clothes as well just think of the service they must provide work clothes must be planned or unusually hardware from fabric fasteners reinforced they must be designed for comfort and utility as well each grade requires its special kind of work clothes each workman wants his clothes made so he will have easy access to the tools of his praise them etc work cause is popular and practical for many kinds of jobs colors  passenger must match need appearance depends on proper to ensure proper fit and clothing for men of many builds more than the different patterns are carefully made in graduated size the buyer has and so the work of leverage for testing as a means of quality control continue application of scientific research and analysis to the problems of producing satisfactory merchandise for the customers in continuing job of creating merchandise merchandise to meet precise human needs is made possible by modern methods quality control whether it's hosiery a pair of shoes  or whatever the customer buys it must represent the best possible at the price responsible retailers can offer just such largely because of the part played by quality control