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US 2025/0153154 A1Published application
Ptfe and active particle compositions
AssigneeDonaldson Company, Inc.
InventorsShane Lawson, Elena T. Ewaldz, Andrew J. Reuter, Yehya A. Elsayed, Joe A. Jaye, Andrew J. Schmitz, Mikayla A. Yoder
Life of this patent
Estimating the term…
Abstract
Tapes, expanded tapes, and methods of making the same. The tapes and expanded tapes include long-strand PTFE fibrils, short-strand PTFE fibrils, and an oriented network. The oriented network includes nodes. The nodes include active particles and short-strand PTFE fibrils distributed among the active particles.
Claims20
A tape comprising:
- a machined matrix having a machined direction, the machined matrix comprising:
- long-strand PTFE fibrils forming an oriented network comprising the long-strand PTFE fibrils, the long-strand PTFE fibrils defining a longitudinal direction;
- and
- nodes distributed among the oriented network, the nodes comprising active particles and short-strand PTFE fibrils distributed among the active particles.
1 more element
An expanded tape comprising:
- an expanded matrix having an expanded direction, the expanded matrix comprising:
- long-strand PTFE fibrils forming an oriented network comprising the long-strand PTFE fibrils, the long-strand PTFE fibrils defining a longitudinal direction;
- and
- nodes distributed among the oriented network, the nodes comprising active particles and short-strand PTFE fibrils distributed among the active particles.
1 more element
An expanded tape comprising:
- an expanded matrix having an expanded direction, the expanded matrix comprising:
- long-strand PTFE fibrils forming an oriented network comprising the long-strand PTFE fibrils, the long-strand PTFE fibrils defining a longitudinal direction;
- and
- nodes distributed among the oriented network, the nodes comprising short-strand PTFE fibrils and active particles distributed among the short-strand PTFE fibrils;
- the expanded matrix having been formed by a method comprising:
- machining a fibrous matrix in a machined direction to form a machined matrix, the fibrous matrix comprising:
- short-strand PTFE fibrils;
- long-strand PTFE fibrils;
- and
- active particles;
- the machined matrix comprising an oriented network comprising the long-strand PTFE fibrils, the long-strand PTFE fibrils defining the longitudinal direction;
- and nodes distributed among the oriented network, the nodes comprising the short-strand PTFE fibrils and the active particles distributed among the short-strand PTFE fibrils;
- and
- expanding the machined matrix in an expanded direction to form an expanded matrix.
11 more elements
Dependencies are inferred from the claim text.