Method of and apparatus for producing plastic bags
First Claim
Patent Images
1. A method of producing plastic bags, the method comprising the steps of:
- folding a web of plastic to form an elongate folded web having free ends;
securing closer tape to the free ends of the elongate folded web;
forming end stops in the closer tape at spaced locations thereof, such step including the step of creating an indicia in each of the end stops; and
simultaneously severing and sealing the elongate folded web at each of the spaced locations to produce individual bags.
1 Assignment
0 Petitions
Accused Products
Abstract
A method of and apparatus for producing plastic bags are disclosed. A web of plastic is folded to form an elongate folded web having free ends and closer tape is secured to the free ends of the elongate folded web. End stops are formed in the closer tape at spaced locations thereof and an indicia is formed in the end stops. The elongate folded web is simultaneously severed and sealed at the spaced locations to produce individual bags.
10 Citations
86 Claims
-
1. A method of producing plastic bags, the method comprising the steps of:
-
folding a web of plastic to form an elongate folded web having free ends;
securing closer tape to the free ends of the elongate folded web;
forming end stops in the closer tape at spaced locations thereof, such step including the step of creating an indicia in each of the end stops; and
simultaneously severing and sealing the elongate folded web at each of the spaced locations to produce individual bags. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73)
-
-
19. A method of producing a plastic bag, the method comprising the steps of:
-
folding a web of plastic to form an elongate folded web having free ends;
securing closer tape to the free ends of the elongate folded web;
forming first and second end stops in the closer tape at spaced locations thereof, such step including the steps of welding portions of at least one of the closer tape and the folded web together at first and second areas adjacent the first and second end stops, respectively, and creating an indicia in at least one of the first and second areas and the first and second end stops; and
simultaneously severing and sealing the elongate folded web at each of the spaced locations to produce a bag.
-
-
37. In an apparatus for producing plastic bags from an elongate web of folded plastic having closer tape secured to free ends of the elongate plastic web, the improvement comprising:
apparatus that forms end stops in the closer tape at spaced locations thereof, the apparatus including a surface that creates an indicia when each end stop is formed.
-
58. Apparatus for producing plastic bags from an elongate folded web of plastic having closer tape secured to free ends of the elongate folded web, comprising:
-
means for forming end stops in the closer tape, the forming means including means for creating an indicia in one of the closer tape and the folded web of plastic; and
means for separating and sealing the elongate folded web at spaced locations thereof to produce individual bags.
-
-
74. Apparatus for producing plastic bags from an elongate folded web of plastic having closer tape secured to free ends of the elongate folded web, comprising:
-
an ultrasonic welding device operable to form end stops in the closer tape, the ultrasonic welding device including at least one removable button that creates an indicia; and
a hot knife that separates and seals the elongate folded web at spaced locations thereof to produce individual bags. - View Dependent Claims (75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86)
-
Specification