Hot foil stamping press

Patent metadata

Field	Value
Publication number	US-12291012-B2
Application number	US-201917593350-A
Country	US
Kind code	B2
Filing date	Mar 20, 2019
Priority date	Mar 20, 2019
Publication date	May 6, 2025
Grant date	May 6, 2025

Abstract

A hot foil stamping press with a pressing table ( 10 ) on which a sheet can be advanced, a pressing system ( 20 ) for pressing a foil ( 14 ) onto the sheet, a guiding system ( 18 ) for guiding the foil ( 14 ) over the sheet, the guiding system ( 18 ) defining a foil transportation path which extends across the path along which the sheet is being advanced, a holder ( 11 ) for receiving a supply ( 12 ) of foil, and a discarding system ( 22 ) for the used foil, the holder being arranged at an operator side of the press.

First claim

The invention claimed is:

1. A hot foil stamping press comprising:
a pressing table on which a sheet can be advanced in a feed direction;
a pressing system for pressing foil onto the sheet;
a guiding system for guiding foil over the sheet, the guiding system defining a foil transportation path which extends across a path along which the sheet is being advanced in a direction that is transverse to the feed direction;
a first holder for receiving a first supply of the foil to be supplied to the guiding system;
a second holder for receiving a second supply of the foil;
a discarding system for discarding used foil without rewinding the used foil; and
a blower for separating used foil from the sheet,
wherein the first holder and the second holder are arranged at an operator side of the hot foil stamping press with the second holder being parallel to the first holder and at a greater height relative to the pressing table than the first holder,
the discarding system is arranged at a backside of the hot foil stamping press opposite to the operator side, and the pressing table is arranged between the backside and the operator side,
the blower is arranged at the backside of the hot foil stamping press, between the discarding system and the pressing table, and the blower directs an air stream into a gap between the sheet and the used foil such that the air stream acts on the used foil and not on new foil on the sheet, to separate the used foil from the sheet, and
the operator side including one or more control elements used for adjusting settings of the hot foil stamping press.

2. The hot foil stamping press of claim 1 , wherein the discarding system comprises a brush system for removing the used foil from the hot foil stamping press.

3. The hot foil stamping press of claim 1 , wherein the discarding system comprises a waste foil container.

4. The hot foil stamping press of claim 1 ,
wherein settings of the blower are much less critical than with a prior art layout of the blower where the blower acts on the new foil.

5. The hot foil stamping press of claim 1 , wherein the pressing system comprises a platen press.

6. A hot foil stamping press comprising:
a pressing table on which a sheet can be advanced in a feed direction;
a pressing system for pressing a foil onto the sheet;
a guiding system for guiding the foil over the sheet along a foil transportation path, the foil transportation path extending across and transverse to the feed direction;
a holder for receiving a supply of the foil;
a blower for separating used foil from the sheet; and
a discarding system for used foil, wherein
the holder is arranged at an operator side of the hot foil stamping press and above the pressing table,
the guiding system is configured to guide the foil in a direction opposite the pressing table after exiting the pressing system,
the blower and the discarding system are arranged at a side of the hot foil stamping press opposite the operator side, the blower being arranged between the discarding system and the pressing table,
and the blower is configured to blow air in a direction that is transverse to the feed direction and into a gap between the used foil and the sheet, such that the air acts on the used foil and not on new foil on the sheet, to separate the used foil from the sheet.

7. The hot foil stamping press of claim 6 , wherein the discarding system comprises a brush system for removing the used foil from the hot foil stamping press.

8. The hot foil stamping press of claim 7 , wherein the discarding system comprises a waste container and a plurality of brushes that are disposed above the waste container.

9. The hot foil stamping press of claim 8 , wherein the discarding system does not rewind used foil.

10. The hot foil stamping press of claim 6 , wherein settings of the blower are much less critical than with a prior art layout of the blower where the blower acts on the new foil.

11. The hot foil stamping press of claim 6 , wherein the pressing system comprises a platen press.

12. The hot foil stamping press of claim 6 , wherein the foil is a thin foil from plastic which has been metallized, or a thin metal foil.

13. The hot foil stamping press of claim 6 , wherein the foil transportation path extends over the pressing table of the pressing system.

14. A hot foil stamping press comprising:
a pressing table on which a sheet can be advanced in a feed direction;
a pressing system for pressing a first foil and a second foil onto the sheet;
a guiding system for guiding the first foil and the second foil over the sheet along a foil transportation path, the foil transportation path extending across and transverse to the feed direction;
a first holder for receiving a supply of the first foil and a second holder for received a supply of the second foil;
a discarding system for used foil comprising a waste container; and
a blower for separating used portions of the first foil and used portions of the second foil from the sheet, wherein
the first holder and the second holder are arranged at an operator side of the hot foil stamping press, the supply of the first foil and the supply of the second foil are on an opposite side of the pressing table as the waste container,
the first foil and the second foil travel on the foil transportation path with the first foil between the second foil and the sheet, and
the blower is arranged at a backside of the hot foil stamping press opposite the operator side, between the discarding system and the pressing system, and directs an air stream into a gap between the sheet and the used portions of the first foil and the second foil, such that the air stream acts on the used portions of the first foil and the second foil and not on new foil on the sheet, to separate the used portions of the first foil and the second foil from the sheet.

15. The hot foil stamping press of claim 14 , wherein the discarding system comprises a brush system for removing the used foil from the hot foil stamping press.

16. The hot foil stamping press of claim 15 , wherein the discarding system comprises a plurality of brushes that are disposed above the waste container.

17. The hot foil stamping press of claim 16 , wherein the discarding system does not rewind used foil.

18. The hot foil stamping press of claim 14 , wherein either or both of the first foil and the second foil are a thin foil from plastic which has been metallized, or a thin metal foil.

19. The hot foil stamping press of claim 14 , wherein the foil transportation path extends over the pressing table of the pressing system.

20. The hot foil stamping press of claim 14 , wherein settings of the blower are much less critical than with a prior art layout of blower where the blower acts on the new foil.

Assignees

• Bobst Mex Sa

Inventors

• De Gaillande Christophe
• Vollmer Christoph
• Song Haoming

Classifications

• B32B2255/205

  Metallic coating · CPC title

• B32B2255/10

  on synthetic resin layer or on natural or synthetic rubber layer · CPC title

• B32B37/0046

  characterised by constructional aspects of the apparatus · CPC title

• B32B27/10

  of paper or cardboard · CPC title

• B41F16/006

  Arrangements for moving, supporting or positioning the printing foil or band · CPC title