# US 9,517,577 B2 · Method for applying a bladder release agent between a green tire and a bladder in a tire curing machine

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- Number: US 9,517,577 B2
- Document ID: US9517577B2
- Status: Granted
- Kind: B2
- Application number: 15/092,882
- Filed: 2016-04-07
- Published: 2016-08-11
- Granted: 2016-12-13
- Earliest claimed: 2013-08-07
- Assignees: The Goodyear Tire & Rubber Company
- Applicants: The Goodyear Tire & Rubber Company
- Inventors: Roger Allan Mohler; John Michael Maloney; Stephanie Pershern Gebby; Joshua Randall Elsass; Nathan Andrew Hunt
- Web page: https://patentgrep.com/patent/US9517577B2

## CPC

- B29C 33/58: Applying the releasing agents
- B29D 30/0005: {Pretreatment of tyres or parts thereof, e.g. preheating, irradiation, precuring}
- B29D 30/0654: {Flexible cores therefor, e.g. bladders, bags, membranes, diaphragms (elastic cores or mandrels for shaping of plastics B29C33/505; bags for isostatic pressing in compression moulding B29C43/12, B29C43/3642)}
- B29C 37/0067: {Using separating agents during or after moulding; Applying separating agents on preforms or articles, e.g. to prevent sticking to each other (separating agents B29C33/60)}
- B29D 30/0061: {Accessories, details or auxiliary operations not otherwise provided for}
- B29D 2030/0659: {Details or accessories for the flexible cores not otherwise provided for}
- B29K 2105/246: {Uncured, e.g. green}
- B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00)
- B29D: PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE (making granules B29B9/00; making preforms B29B11/00)
- B29K: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR {MOULDS, } REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS

## Abstract

A lubricating system indirectly applies a bladder release agent to a green tire and cures the green tire in a tire curing machine. The system includes a deposition device and a curing bladder. The deposition device directly applies bladder release agent on to a deposition bladder. The deposition bladder is inflated within the green tire in order to deposit the bladder release agent on to an inner surface of the green tire. The curing bladder subsequently receives the green tire with bladder release agent deposited therein and cures the green tire.

## Claims

### Claim 1

A method for indirectly applying bladder release agent to a green tire and curing the green tire, the method comprising the steps of:
directly applying bladder release agent on to a deposition bladder;
inflating the deposition bladder within the green tire in order to deposit the bladder release agent on to an inner surface of the green tire;
providing a pre-cure bladder deposition machine disposed along a conveyor system between a tire building machine and a curing bladder, the deposition bladder being part of the pre-cure bladder deposition machine; and
subsequently curing the green tire with bladder release agent deposited therein.