Plastics-based manufactured article and process for forming
AssigneeEovations, LLC
InventorsBrett Birchmeier, Richard McBride
Life of this patent
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Abstract
An oriented plastic composition (OPC) shaped article having a length, width and thickness dimension in which the width and thickness dimensions are less than that of the length dimension, having at least one surface that can be machined so that a portion of the OPC shaped article is reduced in the width or thickness dimension along at least a portion of the length of the article and a process for making and machining an OPC shaped article.
Claims23
An article formed from an oriented polymer composition (OPC) throughout its entire volume and having length, width and thickness dimensions in which the width and thickness dimensions are less than that of the length dimension, wherein at least one surface has been machined so that a portion of the article is reduced in at least one of the width or thickness dimension along at least a portion of the length dimension of the article and wherein a density of the article is between about 0.5 g/cc and 1.0 g/cc.
A process for making a machine-shaped article from an oriented polymer composition (OPC), the machine-shaped article being formed from the OPC throughout its entire volume, the process comprising:
- (a) providing a temperature conditioned extruded polymer composition to a solid state drawing die;
- (b) drawing the polymer composition at a linear draw ratio less than 7.0 to produce an OPC work piece;
- (c) providing the OPC work piece to a machining device comprising one or more machine tools;
- and
- (d) machining the OPC work piece to produce a surface that has been reduced in thickness by removal of material using machining tools to produce an OPC machine-shaped article.
The process of claim 15 in which the polymer composition is die drawn so that the linear draw ratio is between 2.5 and 6.5.
Dependencies are inferred from the claim text.