Hot stamping machine

Patent metadata

Field	Value
Publication number	US-9511620-B2
Application number	US-201314435785-A
Country	US
Kind code	B2
Filing date	Oct 22, 2013
Priority date	Oct 24, 2012
Publication date	Dec 6, 2016
Grant date	Dec 6, 2016

Abstract

A hot-stamping device ( 1 ) is described, having a stamping device ( 2 ) for transferring a transfer layer ( 15 u ) disposed on a carrier layer ( 15 t ) of a hot-stamping foil ( 15 ) on to a substrate ( 14 ). The hot-stamping device comprises a heatable stamping roller ( 11 ) and a counter-pressure roller ( 12 ), between which a stamping gap ( 16 ) is realized, and comprising a separating device ( 3 ), disposed downstream, for separating the carrier layer ( 15 t ) from the transfer layer ( 15 u ) transferred on to the substrate ( 14 ). A flat support element ( 18 ) is disposed under the stamped substrate ( 17 ), between the stamping gap ( 16 ) and the separating device ( 3 ), directly adjoining the stamping gap ( 16 ) or at a distance of <1 mm from the stamping gap ( 16 ) or overlapping the stamping gap ( 16 ).

First claim

The invention claimed is:

1. A hot-stamping device having a stamping device for transferring a transfer layer disposed on a carrier layer of a hot-stamping foil on to a flexible substrate, comprising a heatable stamping roller and a counter-pressure roller, between which a stamping gap is realized, and comprising a separating device, disposed downstream, for separating the carrier layer from the transfer layer transferred on to the substrate, wherein a flat support element for the stamped substrate is disposed under the stamped substrate, between the stamping gap and the separating device, directly adjoining the stamping gap or at a distance of <1 mm from the stamping gap or overlapping the stamping gap,
wherein the support element is made of a material having a degree of hardness in the range of from 60° to 95° Shore A and/or a degree of hardness in the range of from 450 HV 10 (HV=Vickers hardness) to 520 HV 10.

2. A hot-stamping device according to claim 1 , wherein the support element is a rigid element, the maximum deflection of which, in the case of appropriate operational loading, is less than 10 μm.

3. A hot-stamping device according to claim 1 , wherein the support element is made of high-grade steel.

4. A hot-stamping device according to claim 1 , wherein the support element is made of silicone, coated rubber, paper, foil, or fiber-reinforced material.

5. A hot-stamping device according to claim 1 , wherein the support element is a support plate.

6. A hot-stamping device according to claim 5 , wherein the end portion of the support plate that faces towards the stamping gap is in the shape of a blade.

7. A hot-stamping device according to claim 1 , wherein the support element is a continuous belt.

8. A hot-stamping device according to claim 7 , wherein the belt is a seamless belt.

9. A hot-stamping device according to claim 8 , wherein the seamless belt has a thickness in the range of from 0.2 mm to 0.5 mm.

10. A hot-stamping device according to claim 7 , wherein the belt is a link belt of plate-type links, wherein adjacent links are connected to each other by a pivot joint, such that, when in the extended state, they form a gap-free support surface.

11. A hot-stamping device according to claim 1 , wherein the stamping roller has a coating of an elastomer having a thickness in the range of from 3 mm to 10 mm.

12. A hot-stamping device according to claim 11 , wherein the elastomer is silicone rubber.

13. A hot-stamping device according to claim 11 , wherein the coating has a degree of hardness in the range of from 60° to 95° Shore A.

14. A hot-stamping device according to claim 1 , wherein the support element is the end face of a sonotrode of an ultrasonic bearing apparatus.

15. A method for hot-stamping a transfer layer from a hot-stamping transfer foil onto a flexible carrier substrate, the method comprising:
feeding a hot-stamping transfer foil together with a flexible carrier substrate to a stamping gap formed between a heated stamping roller and a counter-pressure roller;
hot-stamping a transfer layer from the hot-stamping foil onto the flexible carrier substrate with the heated stamping roller to form a flexible stamped substrate;
supporting the flexible stamped substrate leaving the stamping gap with a flat support element disposed downstream of the stamping gap by a distance of <1 mm;
separating a carrier layer from the transfer layer of the hot-stamping foil in a separating device disposed downstream of the stamping gap, wherein the flat support element terminates at the separating device for supporting the flexible stamped substrate the entire distance between the stamping gap and the separating device.

Assignees

• Leonhard Kurz Stiftung & Co Kg

Inventors

• Triepel Michael
• Bieber Ralph

Classifications

• B41F16/0093

  Attachments or auxiliary devices · CPC title

• B44B5/0047

  by rolling (B44B5/0061 takes precedence) · CPC title

• B44C1/1729

  Hot stamping techniques · CPC title

• B44C1/17

  Dry transfer · CPC title

• B41F16/0026

  with means for applying print under heat and pressure, e.g. using heat activable adhesive · CPC title