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US 2026/0049233 A1Published application
Flexible Metal Polymer Composite
AssigneeTundra Composites, LLC
InventorsAdam Bartel, Scott Bohnen, John Kroll
Life of this patent
Estimating the term…
Abstract
A material comprising a metal particulate having an interfacial modifier coating and a strain hardening thermoplastic polyolefin elastomer. The composite can be extruded into a variety of cross-sectional shapes and can be formed into a flexible adhesive wheel weight that can be used to rotationally balance vehicle wheels.
Claims20
A wheel weight comprising a linear composite extrudate, a layer of adhesive and a release liner adhered thereto, wherein:
- (i) the linear composite extrudate, free of fluoropolymer, comprises 90 to 97 wt. % of a metal particulate coated with 0.05 to 0.4 wt. % an interfacial modifier, the particulate having a particle size of 1 to 400 microns and 3 to 10 wt. % of a strain hardening thermoplastic polyolefin elastomer, the linear composite extrudate having a rectangular cross section, a width of about 10 to 23 mm and a thickness of less than about 8 millimeters, the particulate having a coating thickness of less than 1000 Å;
- (ii)) the adhesive layer providing a 90° peel strength of 3 kg and
- (iii) a release liner having a width of about 1 mm greater than the composite and a thickness of 0.1 to 0.2 mm, the release liner width is at least one millimeter greater than that of the linear extrudate;
- wherein the composite an elongation at break of about 400% (ASTM D638) and a flex modulus (ASTM D790) greater than about 6 MPa and the linear extrudate has a density of greater than 5 g-cm−3 and about 4 to 6 g-cm−1.
1 more element
A wheel weight comprising a linear composite extrudate, a layer of adhesive and a release liner adhered thereto, wherein:
- (i) the linear composite extrudate, free of fluoropolymer, comprises 90 to 97 wt. % of a metal particulate coated with 0.05 to 0.4 wt. % an interfacial modifier, the particulate having a particle. size of 1 to 400 microns and 3 to 10 wt. % of a strain hardening thermoplastic ethylene/octene elastomer, the linear composite extrudate having a rectangular cross section, the particulate having a coating thickness of less than 1000 Å;
- (ii)) the adhesive layer providing a 90° peel strength of greater than 0.5 kg and
- (iii) a release liner having a thickness of 0.1 to 0.2 mm, and the release liner width is at least one millimeter greater than that of the linear extrudate;
- wherein the composite an elongation at break of about 400% (ASTM D638) and a flex modulus (ASTM D790) greater than about 6 MPa and the linear extrudate has a density of greater than 5 g-cm−3 and about 4 to 6 g-cm−1.
1 more element
Dependencies are inferred from the claim text.