Back to results
US 12,480,605 B2Granted
Tube, method for producing tube, and method for storing tube
AssigneeDaikin Industries, Ltd.
InventorsHitoshi Imamura, Hiroyuki Hamada, Eri Mukai, Yuuki Kuwajima, Manabu Fujisawa
Life of this patent
Estimating the term…
Abstract
Provided is a tube comprising a tetrafluoroethylene/fluoroalkyl vinyl ether copolymer, wherein the tube inner surface has a surface roughness Ra of 5 nm or less measured by atomic force microscopy (AFM) with an evaluation length set to 3 μm, and the tube has an amount of metals eluted from the tube inner surface of 0.30 ng/cm2 or less.
Claims10
A tube comprising a tetrafluoroethylene/fluoroalkyl vinyl ether copolymer,
- wherein the tube inner surface has a surface roughness Ra of 5 nm or less measured by atomic force microscopy (AFM) with an evaluation length set to 3 μm, and
- the tube has an amount of metals eluted from the tube inner surface of 0.30 ng/cm2 or less.
Dependencies are inferred from the claim text.