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In January 1946, the company registered the YKK trademark. A major technological change came in 1950, when the company purchased a chain machine from the U.S. that allowed the automation of the zipper making process. Previously, YKK zippers were made by hand, and hence had an inferior quality compared to automated zippers from abroad.
Open-ended zippers use a box and pin mechanism to lock the two sides of the zipper into place, often in jackets. Open-ended zippers can be of any of the above described types. Two way open-ended zippers have a puller on each end of the zipper tape instead of having an insertion pin and pin box at the bottom. Someone wearing a garment with this ...
Zippers are often used for closure or for providing a close fit at the wrists and ankles while remaining relatively easy to put on and remove, but they also provide leakage points for water A backing flap reduces leakage but can get caught in the zipper while closing. Jackets may have a full or partial front zipper, or none at all.
A metal zipper is a zipper with its binding edges consisting of individual pieces of metal that are molded into shape and set at regular intervals on the zipper tape. Metal zippers are mainly made of brass , nickel and aluminium , and given their durability, they are mostly used in jeans, work-wear, heavy luggage and heavy-duty garments that ...
The Mechanical Engineering Heritage program was inaugurated in June 2007 in connection with the 110th anniversary of the founding of the JSME. The program recognizes machines, related systems, factories, specification documents, textbooks, and other items that had a significant impact on the development of mechanical engineering.
"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." In the world of baked goods, there are tasty recipes and then there are top-notch, tried-and-true ...
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