Preparation of photopolymeric gravure printing plates

US6190832A · kind A · utility

Assignee

• BASF SE

Inventors

• Friedrich Goffing · Schifferstadt, DE
• Thomas Loerzer · Bischofswerda, DE
• Hartmut Sandig · Bischofswerda, DE
• Markus Tonnessen · Mutterstadt, DE

Key dates

• Filing date: Oct 28, 1998
• Grant date: Feb 20, 2001
• Expiry date: Oct 28, 2018

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S430/145
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

Photopolymeric gravure printing plates which are to be developed with water or water/alcohol mixtures after imagewise exposure and have, arranged one on top of the other on a dimensionally stable substrate, a layer (A) which may be bonded to the dimensionally stable substrate by an adhesion-promoting layer and is crosslinkable by actinic radiation, a layer (B) which is sensitive to IR radiation and, if required, a parting layer arranged between layer (A) and layer (B), and a peelable protective film applied to the layer (B), are produced by a process in which the layer (A) consists of a mixture of at least one polymeric binder which is soluble or dispersible in water or water/alcohol mixtures, copolymerizable ethylenically unsaturated organic compounds which are compatible with this polymeric binder, a photoinitiator or photoinitiator system and, if required, further assistants, the parting layer which may be arranged between layer (A) and layer (B) is oxygen-permeable and the layer (B) sensitive to IR radiation has an optical density .gtoreq.2.5 in the actinic range and contains a film-forming polymeric binder which is soluble or dispersible in water or water/alcohol mixtures and …