Soluble manufacturing aid

Patent metadata

Field	Value
Publication number	US-10099403-B2
Application number	US-201615012099-A
Country	US
Kind code	B2
Filing date	Feb 1, 2016
Priority date	Feb 1, 2016
Publication date	Oct 16, 2018
Grant date	Oct 16, 2018

Abstract

Provided is a method of forming a shaped structure. The method includes coupling a first section of a mold to a second section of the mold such that a mold cavity is defined, wherein a cross-sectional shape of the mold cavity corresponds to a cross-sectional shape of the shaped structure and wherein at least one of the first section of the mold and the second section of the mold comprise a soluble material; at least partially filling the mold cavity with a curable polymer; and curing the curable polymer in the mold cavity to make the shaped structure.

First claim

What is claimed is:

1. A method of forming a shaped structure, comprising:
coupling a first section of a mold to a second section of the mold such that a mold cavity is defined,
wherein a cross-sectional shape of the mold cavity corresponds to a cross-sectional shape of the shaped structure, and
wherein the first section of the mold and the second section of the mold comprise a soluble material;
at least partially filling the mold cavity with an uncured curable polymer;
curing the uncured curable polymer in the mold cavity to make the shaped structures;
removing the first section and the second section of the mold to expose the shaped structure,
wherein removing of the first section and second section of the mold comprises dissolving the soluble material with a solvent; and
attaching the shaped structure to a substrate comprising a discontinuity, wherein the shaped structure functions as a seal at the discontinuity.

2. The method of claim 1 , wherein the solvent comprises water.

3. The method of claim 1 , wherein the solvent comprises an organic solvent.

4. The method of claim 1 , wherein the soluble material comprises a starch.

5. The method of claim 1 , wherein the soluble material comprises a foam.

6. The method of claim 1 , wherein the soluble material comprises a starch component selected from unmodified and modified corn, potato, wheat, rice, tapioca, waxy maize, high amylase corn starch, or combinations thereof.

7. The method of claim 1 , wherein the substrate comprises wherein the substrate comprises a first structural member having an outer surface, a second structural member having an outer surface and an edge surface, and the discontinuity is defined between the first structural member and the second structural member.

8. The method of claim 1 , wherein at least one of the first continuous section of the mold and the second continuous section of the mold comprises a plurality of access conduits, and wherein the at least partially filling of the mold cavity with the curable polymer comprises introducing the curable polymer into the cavity through at least one of the plurality of access conduits.

9. The method of claim 8 , wherein the method further comprises plugging closed at least one of the plurality of access conduits to prevent the uncured curable polymer from flowing out of the cavity.

10. A method of forming a shaped structure, comprising:
coupling a mold comprising a body portion and a cavity surface to a substrate such that a mold cavity is defined between the cavity surface and the substrate,
wherein the substrate comprises a first structural member having an outer surface, a second structural member having an outer surface and an edge surface, and a discontinuity between the first structural member and the second structural member,
wherein a cross-sectional shape of the cavity corresponds to a cross-sectional shape of the shaped structure, and
wherein the body portion comprises a soluble material;
depositing a curable polymer into the cavity through at least one opening in the mold and onto the discontinuity;
curing the curable polymer to form a cured polymer, wherein at least a portion of the curable polymer contacts the outer surface of the first structural member and the outer surface of the second structural member; and
removing at least some of the body portion of the mold to expose the cured polymer,
wherein the removing of at least some of the body portion of the mold comprises dissolving the soluble material with a solvent.

11. The method of claim 10 , wherein the solvent comprises water.

12. The method of claim 10 , wherein the solvent comprises an organic solvent.

13. The method of claim 10 , wherein the soluble material comprises a starch.

14. The method of claim 10 , wherein the soluble material comprises a foam.

15. The method of claim 10 , wherein the soluble material comprises unmodified and modified corn, potato, wheat, rice, tapioca, waxy maize, high amylase corn starch, or combinations thereof.

16. The method of claim 10 , wherein the at least a portion of the cured polymer further contacts the edge surface of the second structural member.

17. The method of claim 10 , wherein the at least one opening comprises a plurality of access conduits extending through the body portion.

18. A method of forming a shaped structure, comprising:
coupling a mold comprising a body portion and a cavity surface to a substrate such that a mold cavity is defined between the cavity surface and the substrate, wherein a cross-sectional shape of the cavity corresponds to a cross-sectional shape of the shaped structure, wherein the body portion comprising a soluble material, wherein the soluble material comprises unmodified and modified wheat, tapioca, waxy maize, high amylase corn starch, or combinations thereof;
depositing an uncured curable polymer into the cavity through an opening in the mold; and
curing the uncured curable polymer to form the shaped structure,
exposing the shaped structure by dissolving a portion of the mold with a solvent and removing a portion of the mold by mechanical force.

Assignees

• Boeing Co

Inventors

• Zavada Andrew M
• Booth Brandon D
• Cardona Isbelia D

Classifications

• B29C35/0805

  using electromagnetic radiation · CPC title

• B29C39/006

  Monomers or prepolymers (by reaction injection moulding B29C67/246) · CPC title

• B29C39/02

  for making articles of definite length, i.e. discrete articles · CPC title

• F16B11/006

  by gluing (gluing of plastics material B29C65/48) · CPC title

• B29C33/40

  Plastics, e.g. foam or rubber · CPC title