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US 6,147,319 AGranted
Hole making device for web material
AssigneeJapan Tobacco Inc.
InventorsKiyoshi Imai, Junichi Fukuchi, Michiaki Takatsu
Life of this patent
Estimating the term…
Abstract
A perforating device for web material comprises a plurality of laser heads for emitting pulse laser beams toward the web traveling at constant speed and a plurality of linear actuators for individually supporting the laser heads, moving the laser heads independently in the width direction of the web, and determining positions for the application of the pulse laser beams.
Claims13
A perforating device for web material, comprising:
- running means for continuously running a web material at a constant speed along a predetermined path of travel;
- and
- laser beam generating means for emitting a plurality of pulse laser beams linearly toward the web material on the path of travel, thereby forming a plurality of rows of pores in the web material, said laser beam generating means including a plurality of laser heads for emitting the pulse laser beams, each of the laser heads having a laser generator and a condensing lens, and moving means for linearly moving each laser head independently in a width direction of the web material.
Dependencies are inferred from the claim text.