ozone post-deposition treatment to remove carbon in a flowable oxide film

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New Developments in the Metal Finishing Field Compiled by Anselm Kuhn, Metal Finishing Information Services Ltd. Recently published patents Methods and Apparatus for Production of Composite- Coated Rigid Flat-Rolled Sheet Metal Substrate WO 2004101839 (Weirton Steel Corp.) Sinsel, J.A.; Loen, M.A., et al. Methods and apparatus for pro- ducing composite-coated rigid flat-rolled sheet metal substrate in which thermoplastic polymer- ic materials are selected and combined for dual-layer molten- film extrusion presenting a first- contracting tie-layer and an externally located finish layer, which are simultaneously extruded for one single substrate surface at a time, in which the tie layer selection includes an ethylene-glycol modified PET, requiring a substrate-surface temperature between 230°F and 300°F, and a maleic-anhydride modified polyethylene free of any substrate surface heating requirement. The tie layer pro- vides sufficient green strength adhesion for a finish layer select- ed from PBT, PET, and a combi- nation of PBT and PET. Each substrate surface is separately activated for desired adhesion and separately polymeric coated. Dual-surface finishing process- ing is carried out by remelting the coated polymeric materials for completing bonding of the dual polymeric layers on each inorganic metallic protectively coated surface of the substrate. Ozone Post-Deposition Treatment to Remove Carbon in a Flowable Oxide Film WO 2004102651 (Micron Tech Inc). Sandhu, G.S.; Li, L. Method of removing residual car- bon deposits from a flowable, insulative material, which com- prises silicon, carbon, and hydro- gen and is a flowable oxide mate- rial or a spin-on, flowable oxide material. The residual carbon i;,'[[~; /-.] :5~.~,,!~., ] C. Plating and Chrome Specialists ChromicAcid:Rake =ChromicAcid Crystal Fume Suppressants Brighteners Testing and Support Cobalt Copper Brass Bronze Nickel Crowns and Rounds Zinc Tin Rec*angtes a~ OvaLs MORE Stars, lng~ and Shot Custom Alloys Custom Anodes Custom Baskets Custom Blends Circle 096 on reader information card or go to www.thru.to/webconnect = =; :R s A:0 ~ e RS { Hot Water On [-~ -,Ai emat u. I/_-E-R" : A ~ COMPANY TRANTER PHE (940) 723-7125 Fax: (940) 723-5131 http://www.trant erphe.corn E-maih [email protected] At the Temperature, in the Volume You Need...with Tranter's Space-efflcient, All-welded SUPERMAX ~ Plate Heat Exchanger Countercurrent flow for smooth thermal performance through startups and load swings High flow rates Fast response Accurate temperature control Scale-retaMant, electropolished plate surfaces Excellent intermixing security for high-purity needs 650530 © 2005 Tranter PHEAnC. . _~,~ ~ '. Circle 098 on reader information card or go to www.thru.to/webconnect 104 www.metalfinishing.com

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New Developments in the Metal Finishing Field Compiled by Anselm Kuhn, Metal Finishing Information Services Ltd.

Recently published patents

M e t h o d s a n d A p p a r a t u s fo r

P r o d u c t i o n o f C o m p o s i t e -

C o a t e d R ig id F l a t - R o l l e d S h e e t

M e t a l S u b s t r a t e

WO 2004101839 (Weirton Steel Corp.) Sinsel, J.A.; Loen, M.A., et al. Methods and apparatus for pro- ducing composite-coated rigid flat-rolled sheet metal substrate in which thermoplastic polymer- ic materials are selected and combined for dual-layer molten- film extrusion presenting a first- contracting tie-layer and an externally located finish layer, which are simultaneously

extruded for one single substrate surface at a time, in which the tie layer selection includes an ethylene-glycol modified PET, requiring a substrate-surface temperature between 230°F and 300°F, and a maleic-anhydride modified polyethylene free of any substrate surface heating requirement. The tie layer pro- vides sufficient green strength adhesion for a finish layer select- ed from PBT, PET, and a combi- nation of PBT and PET. Each substrate surface is separately activated for desired adhesion and separately polymeric coated. Dual-surface finishing process- ing is carried out by remelting

the coated polymeric materials for completing bonding of the dual polymeric layers on each inorganic metallic protectively coated surface of the substrate.

O z o n e P o s t - D e p o s i t i o n T r e a t m e n t to R e m o v e C a r b o n

in a F l o w a b l e O x i d e F i lm

WO 2004102651 (Micron Tech Inc). Sandhu, G.S.; Li, L. Method of removing residual car- bon deposits from a flowable, insulative material, which com- prises silicon, carbon, and hydro- gen and is a flowable oxide mate- rial or a spin-on, flowable oxide material. The residual carbon

i ; , ' [ [ ~ ; /-.] :5~.~,,!~., ] C. P l a t i n g a n d C h r o m e S p e c i a l i s t s

Chromic Acid:Rake =Chromic Acid Crystal

Fume Suppressants Brighteners

Testing and Support

C o b a l t C o p p e r Brass B r o n z e

Nicke l Crowns and Rounds Z inc Tin Rec*angtes a ~ OvaLs M O R E Stars, l n g ~ and Shot

C u s t o m A l loys C u s t o m A n o d e s

C u s t o m B a s k e t s C u s t o m B lends

Circle 096 on reader information card or go to www.thru.to/webconnect

= =; :R s A : 0 ~ e RS {

Hot Water On [-~ -,Ai emat u.

I/_-E-R" : A ~ COMPANY

TRANTER PHE (940) 723-7125

Fax: (940) 723-5131 http://www.trant erphe.corn

E-maih [email protected]

At the Temperature, in the Volume You Need...with Tranter's Space-efflcient, All-welded SUPERMAX ~ Plate Heat Exchanger

Countercurrent flow for smooth thermal performance through startups and load swings High flow rates Fast response Accurate temperature control Scale-retaMant, electropolished plate surfaces Excellent intermixing security for high-purity needs

650530 © 2005 Tranter PHEAnC. . _~,~ ~ '.

Circle 098 on reader information card or go to www.thru.to/webconnect

104 www.metalfinishing.com