Cores made from unplasticized polyvinyl butyral for wound plastic sheets
OwnerMark Wagnerinventor
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Abstract
The present invention is a shaped article suitable for winding plasticized polyvinyl butyral sheeting to form a roll of said sheeting, wherein the shaped article consists essentially of unplasticized polyvinyl butyral. In another aspect, the present invention is a manufacturing process comprising the step of winding plasticized polyvinyl butyral onto a core of unplasticized polyvinyl butyral.
Claims8
A shaped article suitable for functioning as a core for winding thermoplastic sheeting onto in order to form a roll of said sheeting around said core, wherein the core consists essentially of unplasticized polyvinyl butyral (PVB).
An article comprising a core and thermoplastic sheeting wound around said core, the core consisting essentially of unplasticized polyvinylbutyral.
A process comprising the step of forming an unplasticized PVB core by extrusion of unplasticized PVB to form a shaped article suitable for use as a core for winding PVB sheeting.
Dependencies are inferred from the claim text.