Unit for laminating a first web onto a second web in a laminating machine and method for manufacturing a multi-layer composite
First Claim
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1. A laminating unit to manufacture a multi-layer composite, including a first web and a second web, in a laminating machine, comprising:
- a laminating rotating roll, conveying the first web and laminating the first web onto the second web;
driving means, rotating the laminating rotating roll;
gripping means, maintaining the first web in contact with the laminating rotating roll;
first detection means emitting first detection signals in accordance with detected longitudinal positions of the first web;
second detection means emitting second detection signals in accordance with detected longitudinal positions of the second web; and
control means, configured to increase or decrease a rotational speed of the driving means and of the laminating rotating roll as a function of the first and second detection signals, as required to correct a longitudinal position of the first web relative to the second web, and to cause the laminating rotating roll to laminate the first web onto the second web, such that the first web is laminated onto the second web in register with the second web, the laminating rotating roll being configured to remain in a position such that the first web is in contact with the second web, while registration of the first web with the second web occurs.
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Abstract
A laminating unit to manufacture a multi-layer composite (2) in a laminating machine (1), comprising a laminating rotating roll (16), laminating a first web (3) onto a second web (4), is characterized in that it further comprises:
- driving means (42), rotating (R) the roll (16);
- gripping means (39, 41), maintaining the first web (3) in contact with the roll (16);
- first detection means (43, 46) emitting first detection signals (44, 47) in accordance with detected longitudinal positions of the first web (3);
- second detection means (48, 51) emitting second detection signals (49, 52) in accordance with detected longitudinal positions of the second web (4); and
- control means (53), regulating a rotation speed of the driving means (42) and of the roll (16) as a function of the first and second signals (44, 47, 49, 52), to convey, correct longitudinally positions of the first web (3), and laminate the first web (3) in register onto the second web (4).
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Citations
15 Claims
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1. A laminating unit to manufacture a multi-layer composite, including a first web and a second web, in a laminating machine, comprising:
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a laminating rotating roll, conveying the first web and laminating the first web onto the second web; driving means, rotating the laminating rotating roll; gripping means, maintaining the first web in contact with the laminating rotating roll; first detection means emitting first detection signals in accordance with detected longitudinal positions of the first web; second detection means emitting second detection signals in accordance with detected longitudinal positions of the second web; and control means, configured to increase or decrease a rotational speed of the driving means and of the laminating rotating roll as a function of the first and second detection signals, as required to correct a longitudinal position of the first web relative to the second web, and to cause the laminating rotating roll to laminate the first web onto the second web, such that the first web is laminated onto the second web in register with the second web, the laminating rotating roll being configured to remain in a position such that the first web is in contact with the second web, while registration of the first web with the second web occurs. - View Dependent Claims (2, 3, 5, 6, 7, 8, 9, 10, 11, 12)
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4. A laminating unit to manufacture a multi-layer composite, including a first web and a second web, in a laminating machine, comprising:
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a laminating rotating roll, conveying the first web and laminating the first web onto the second web; driving means, rotating the laminating rotating roll; gripping means, maintaining the first web in contact with the laminating rotating roll; first detection means emitting first detection signals in accordance with detected longitudinal positions of the first web; second detection means emitting second detection signals in accordance with detected longitudinal positions of the second web; and control means, varying a rotational speed of the driving means and of the laminating rotating roll as a function of the first and second detection signals, to convey the first web, to correct longitudinal positions of the first web, and to cause the laminating rotating roll to laminate the first web onto the second web, such that the first web is laminated onto the second web in register with the second web, the laminating rotating roll being configured to remain in a position such that the first web is in contact with the second web, while registration of the first web with the second web occurs, wherein the gripping means are in the form of at least one suction opening, drilled through an outer wall of the laminating rotating roll and being in connection with a vacuum source.
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13. A method for manufacturing a multi-layer composite by laminating a first web onto a second web in a laminating machine, comprising the steps of:
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conveying the first web in a longitudinal direction; conveying the second web in the longitudinal direction; laminating the first web onto the second web, such that the first web is laminated onto the second web in register with the second web by increasing or decreasing a rotational speed of a laminating rotating roll, which laminates the first web onto the second web, as required to cause the laminating rotating roll to laminate the first web onto the second web, such that the first web is laminated onto the second web in register with the second web; detecting longitudinal positions of the first web; detecting longitudinal positions of the second web; and correcting a longitudinal position of the first web relative to the second web, in accordance with the detected longitudinal positions of the first and second webs. - View Dependent Claims (14, 15)
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Specification