Method for the continuous high speed rotary application of stamping foil
US6491780B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 30, 2001 |
| Grant date | Dec 10, 2002 |
| Priority date | — |
| Expiry date | Jul 30, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1705
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A technique for transferring discrete areas of material, such as hot stamping foil, from a carrier onto positions spaced apart along a substrate, such as paper. The carrier is dispensed at a rate that is much less than the speed of movement of the substrate. During transfer, a segment of the carrier is moved at the same speed as the substrate while, in between such material transfers, the speed of the carrier is sharply reduced and even reversed in direction in order to maintain the average speed of this carrier segment equal to the reduced speed at which the carrier is being dispensed. This is accomplished by a shuttle mechanism that is moved by its own motor, under control of a microprocessor-based motor control system, in synchronism with the speed of the substrate and transfer operations. This significantly improves the utilization of the material on the carrier, with an improved flexibility to adapt to various substrate speeds and ease of implementation in machinery.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.