Corrosion-resistant reservoir for an e-vaping device and method of manufacturing thereof

Patent metadata

Field	Value
Publication number	US-11692102-B2
Application number	US-202117339115-A
Country	US
Kind code	B2
Filing date	Jun 4, 2021
Priority date	Jun 12, 2017
Publication date	Jul 4, 2023
Grant date	Jul 4, 2023

Abstract

Example embodiments relate to a method of protecting a surface of an e-vaping device portion from corrosion, the method including preparing a coating mixture configured to protect the surface from corrosion, and coating the surface with a protective coating based on the coating mixture, wherein the coating is performed via one of electrodeposition, dipping, spraying, and vapor deposition, and the coating mixture includes at least one of a silane and a resin.

First claim

What is claimed is:

1. A method of protecting an inside surface of an e-vaping device portion from corrosion, the method comprising:
preparing a coating mixture configured to protect the inside surface from corrosion and a pre-vapor formulation and including a dispersion mixture including a cationic polymer dissolved in a water dispersion that includes about 30% to about 40% of particulate dispersion, the particulate dispersion further including solid polymer particles; and
coating the inside surface with a permanent protective coating based on the coating mixture;
the coating being performed via electrodeposition; and
the coating mixture including a silane, a resin, or both.

2. The method of claim 1 , wherein the preparing the coating mixture further comprises:
preparing a first mixture by dissolving a first polymer, and
preparing a silane mixture by dissolving a silane.

3. The method of claim 2 , wherein the preparing the first mixture comprises:
dissolving the first polymer at a concentration of about 1% to about 5% by weight in water;
adding acetic acid to adjust a pH of the first mixture to be smaller than or equal to 6; and
heating the first mixture to between about 50° C. and about 70° C.

4. The method of claim 3 , further comprising:
adding a filler at a weight ratio of about 10 parts of the first polymer to 1 part of filler.

5. The method of claim 4 , wherein the pH of the first mixture is in the range of about 4 to about 5.

6. The method of claim 4 , wherein the adding the filler comprises adding the filler at a weight ratio of about 100 parts of the first polymer to 1 part of filler.

7. The method of claim 3 , wherein the first polymer includes chitosan.

8. The method of claim 2 , wherein the preparing the silane-mixture comprises:
mixing a solvent with the silane at about 5% to about 20% by weight of the silane;
adding acetic acid to adjust a pH of the silane-mixture to stabilize hydrolyzed silane; and
mixing the silane-mixture via agitation at room temperature for about 10 minutes to about 1 hour.

9. The method of claim 8 , wherein the solvent comprises water, methanol, or both.

10. The method of claim 8 , wherein the silane comprises TEOS, BTSE, or both.

11. The method of claim 2 , wherein the preparing the coating mixture comprises:
combining the dispersion mixture and the silane-mixture at a ratio of about 6 to 1.

12. The method of claim 1 , further comprising:
adding a filler at a weight ratio of about 10 parts of the cationic polymer to 1 part of filler.

13. The method of claim 12 , wherein the adding the filler comprises adding the filler at a weight ratio of about 100 parts of the cationic polymer to 1 part of filler.

14. The method of claim 1 , wherein the coating the inside surface comprises:
filling an electrodeposition vessel with the coating mixture, the electrodeposition vessel including an anode and a cathode;
connecting the cathode with the e-vaping device portion; and
depositing the coating mixture on the inside surface of the e-vaping device portion.

15. The method of claim 1 , wherein the coating mixture further comprises a filler, wherein the filler includes at least one of TiO 2 , clay, ZrO 2 , ZrO 2 Y2O 3 , CeO 2 , Al 2 O 3 , or a combination thereof.

16. A method of protecting an inside surface of an e-vaping device portion from corrosion, the method comprising:
preparing a coating mixture configured to protect the inside surface from corrosion and a pre-vapor formulation and including a dispersion mixture including a cationic polymer dissolved in a water dispersion that includes about 30% to about 40% of particulate dispersion, the particulate dispersion further including solid polymer particles; and
coating the inside surface with a permanent protective coating based on the coating mixture;
the coating being performed via vapor deposition; and
the coating mixture including a silane, a resin, or both.

17. The method of claim 16 , wherein when the coating is performed via vapor deposition, the coating the inside surface includes:
cleaning the inside surface of the e-vaping device portion;
depositing an intermediate adhesive layer on the inside surface of the e-vaping device portion; and
performing vapor deposition to deposit the permanent protective coating on the inside surface of the e-vaping device portion.

18. The method of claim 17 , wherein the cleaning comprises:
one of vapor degreasing, ultrasound cleaning, machine washing, a sub-combination thereof, or a combination thereof, the e-vaping device portion; and
drying the e-vaping device portion.

19. The method of claim 17 , wherein the intermediate adhesive layer comprises one of silane, carboxylic acid, an anhydride group containing one or more polymers, a sub-combination thereof, or a combination thereof.

20. The method of claim 16 , wherein the performing the vapor deposition comprises:
heating parylene at a temperature of equal to or greater than about 600° C. to pyrolize a parylene dimer into a parylene monomer; and
depositing a permanent protective coating including the parylene monomer over metallic portions of the e-vaping device portion at room temperature.

Assignees

• Altria Client Services Llc

Inventors

• Karles Georgios D
• Sundar Rangaraj S

Classifications

• A61M2016/0027

  pressure meter · CPC title

• A61M11/042

  electrical · CPC title

• B05D7/222

  of pipes · CPC title

• A61M2205/8206

  battery-operated · CPC title

• A61M2016/0021

  with a proportional output signal, e.g. from a thermistor · CPC title