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Tear-off horizontal perforations at page top/bottom are exactly in-between standard perforations, at whatever regular interval is used for that particular paper. When the perforated edges of the paper are manufactured so that they tear off the pages in strips, those strips are known as "perfory."
Perforation is used in ways to separate loose leaf (or even a form of graph paper from a ringed binder). A fine perforation next to the rings allows the page to be separated from the book with no confetti. Screwcaps on glass or plastic bottles are sealed with a ring at the bottom of the cap attached by perforation. Twisting the cap has the ...
English: Tearing a sheet off a roll of toilet paper. Like most toilet paper, it is perforated and thin, making it easy to tear one or more sheets off. Like most toilet paper, it is perforated and thin, making it easy to tear one or more sheets off.
Two small paper bags – Bottom: flat gusseted bag. Top: square bottom, self-opening. Paper shopping bags, brown paper bags, grocery bags, paper bread bags and other light duty bags have a single layer of paper. A variety of constructions and designs are available. Many are printed with the names of stores and brands. Paper bags are not ...
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The bottom and sides are heat-sealed together to form the pouch, and the product is loaded from the top. The pouch with the loaded product then advances downwards; the top is sealed and the pouch is cut off. The sealing of the top of the pouch forms the bottom of the next pouch. During this process a tear notch may be punched.