Bag for waste with closing string device and closing method and production method of the bag
Bag, particularly a waste bag, with a closing string device and a closing method of the opening of the bag and a production method of the bag, which, in correspondence with the opening border, is provided with a string (200) made of the same material with which the bag is obtained, said string being placed inside or outside one of the two edges defining the opening, with the ends welded at the sides of the bag; the string being wound with a neck around the curled opening, and then laid under the rest portion of the string. Continuous bags production method, in which the biodegradable thermoplastic or plastic material folded film is unwound from the single-folded material coil, along which the string (200) is continuously joined, outside the film or internally between the two edges of the folded film; said string being successively welded to the folded film at the two ends, wherein each welding is carried out at the dividing line between one bag and the contiguous one.
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Published patent application
Disclosure date: 10-02-2007
Publication date: 01-06-2010
Applicant: VIROSAC SRL, IT
Inventor: GRAZIANO VIRAGO MR, IT
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