Finishing roll sleeve for extruded thermoplastic film

This invention relates to an improved finishing roll sleeve and method for extruding thermoplastic articles and, more particularly, relates to an improved method for providing smooth upper and lower surfaces to a thermoplastic substrate such that said substrate is particularly useful in optical medi...

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Hauptverfasser:	LILLY, KENNETH LEE, MORROW, ROBERT JAMES, JR, BLAYLOCK, GERALD DEE
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM PERFORMING OPERATIONS PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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creator	LILLY, KENNETH LEE MORROW, ROBERT JAMES, JR BLAYLOCK, GERALD DEE
description	This invention relates to an improved finishing roll sleeve and method for extruding thermoplastic articles and, more particularly, relates to an improved method for providing smooth upper and lower surfaces to a thermoplastic substrate such that said substrate is particularly useful in optical media applications, such as CD-ROM cards. Such applications require the use of substrates having polished surfaces on both sides and a birefringence of less than twenty-five (25) nm. Further requirements for optical media applications include abrasion, chemical and UV resistance, substrate thickness consistency, thermal shrinkage and barrier resistance to water vapor.
format	Patent
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Such applications require the use of substrates having polished surfaces on both sides and a birefringence of less than twenty-five (25) nm. 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Such applications require the use of substrates having polished surfaces on both sides and a birefringence of less than twenty-five (25) nm. Further requirements for optical media applications include abrasion, chemical and UV resistance, substrate thickness consistency, thermal shrinkage and barrier resistance to water vapor.</abstract><edition>6</edition><oa>free_for_read</oa></addata></record>
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language	eng ; fre ; ger
recordid	cdi_epo_espacenet_EP0916475A1
source	esp@cenet
subjects	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM PERFORMING OPERATIONS PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
title	Finishing roll sleeve for extruded thermoplastic film
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