tube

Abstract

To provide a tube that can be used for a ventilation filter and gas liquid separation application including degasification and supply air and has excellent ventilation characteristic.SOLUTION: A porous structure tube including a communication hole in a radial direction includes: a main lumen; and at least one sub lumen extending in an axial direction in a thick wall part. The tube preferably has ventilation characteristic in both of the radial direction and the axial direction.SELECTED DRAWING: Figure 1

Claims

1. A tube made of PTFE with a porous structure having radially connecting holes, used for waterproof and dustproof ventilation filters, air supply, degassing, and gas separation applications, The tube comprises a main lumen and at least one sub-lumen extending axially in the thickened portion. Furthermore, the tube is characterized by sealing at least the entire axial end face of the tube.

2. The main lumen is sealed, The tube according to claim 1.

3. The tube is characterized by having air permeability in both the radial and axial directions. The tube according to claim 1 or 2.

4. The main lumen is characterized by extending along the central axis and being positioned approximately at the center of the tube. A tube according to any one of claims 1 to 3.

5. In a cross-section perpendicular to the axial direction, the sub-flumen are arranged point-symmetrically with respect to the central axis of the tube, A tube according to any one of claims 1 to 4.

6. The porous structure is characterized by having a porosity of 20 to 70%. A tube according to any one of claims 1 to 5.

7. The communication holes are characterized by being arranged along the entire length in the axial direction and throughout the entire thickness of the wall portion. A tube according to any one of claims 1 to 6.

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