Method of adhesively bonding a strip of flexible fabric to a substrate
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B32B-037/10
C09J-005/06
B32B-037/12
B32B-038/00
B32B-038/16
출원번호
US-0085263
(2006-11-17)
등록번호
US-8906189
(2014-12-09)
우선권정보
FR-05 11721 (2005-11-18)
국제출원번호
PCT/FR2006/051187
(2006-11-17)
§371/§102 date
20090401
(20090401)
국제공개번호
WO2007/057614
(2007-05-24)
발명자
/ 주소
Mercier, Pascale
Lanvin, Pascal
Lenhardt, Edouard
출원인 / 주소
Chantiers de l'Atlantique
대리인 / 주소
Abelman, Frayne & Frayne
인용정보
피인용 횟수 :
0인용 특허 :
3
초록▼
The invention relates to a method of bonding a strip of flexible sheet onto at least one flexible or rigid support, said sheet and said support including at least one continuous fine metal foil sandwiched and bonded between two fiberglass fabrics. In accordance with the invention, the method include
The invention relates to a method of bonding a strip of flexible sheet onto at least one flexible or rigid support, said sheet and said support including at least one continuous fine metal foil sandwiched and bonded between two fiberglass fabrics. In accordance with the invention, the method includes a step of pressing said strip of flexible sheet against the support by means of a press while simultaneously heating said strip for at least a portion of the duration over which pressure is applied.
대표청구항▼
1. A method of bonding a strip of flexible sheet on at least one rigid support, said strip of flexible sheet constituting a part of a sealing membrane for a wall of an insulated tank for confining a liquefied gas, integrated into a load-carrying structure of a ship, said sheet and said support compr
1. A method of bonding a strip of flexible sheet on at least one rigid support, said strip of flexible sheet constituting a part of a sealing membrane for a wall of an insulated tank for confining a liquefied gas, integrated into a load-carrying structure of a ship, said sheet and said support comprising at least one continuous thin metal foil, bonded in a sandwich between two glass fiber fabrics, said insulated tank wall being formed by assembling a plurality of prefabricated panels each of which comprises a seal membrane inserted between two thermally-insulating barriers, said strip of flexible sheet providing continuity of sealing of said sealing membrane at a junction between two prefabricated panels; the method comprising the following successive steps of: de-dusting a bonding zone;depositing a uniform film of polymerizable adhesive on at least one of the two surfaces of the flexible sheet and of the support that are to be bonded together;smoothing said film of adhesive;placing the strip of flexible sheet on the support;roller-pressing the deposited flexible sheet so as to eliminate any residual bubbles; andplacing on said flexible sheet a film to provide protection against adhesive overflowing around said flexible sheet, the protective film being of dimensions greater than those of the flexible sheet;the method comprising subsequently:a step of applying pressure on said strip of flexible sheet against the support by means of a press, and of simultaneously heating said strip for at least part of the time during which pressure is applied, said pressure and said heating being simultaneously applied to the whole strip. 2. The method of bonding according to claim 1, wherein after the de-dusting step and before the step of depositing the adhesive, protective adhesive tapes are put into place on the support around the bonding zone to be bonded to the strip of flexible sheet, in order to protect the support from any excessive overflow of adhesive. 3. The method of bonding according to claim 2, wherein the bonding zone is subjected to plasma treatment prior to the step of depositing adhesive and after the protective adhesive tapes have been put into place. 4. The method of bonding according to claim 3, wherein the step of depositing adhesive is performed within a maximum period of 3 h after the beginning of the plasma treatment. 5. The method of bonding according to claim 4, wherein the step of depositing adhesive is performed within a maximum period of 90 min after the beginning of the plasma treatment. 6. The method of bonding according to claim 5, wherein the method is performed under controlled ambient temperature lying in the range 20° C. to 25° C. 7. The method of bonding according to claim 6, wherein the method is performed in a controlled atmosphere in which relative humidity is no more than 60%. 8. The method of bonding according to claim 7, wherein the method is performed while maintaining the temperature of the adhesive at the moment of its application in the range 25° C. to 30° C. 9. The method of bonding according to claim 1, wherein the pressure applied during heating lies in the range about 50 mbar to 200 mbar, in that the temperature to which the bonded strip is raised lies in the range about 50° C. to 70° C., and in that the duration of the heating lies in the range about 1 h to 7 h. 10. The method of bonding according to claim 9, wherein pressure applied is about 100 mbar, in that the temperature to which the bonded strip is heated is about 60° C., and in that the duration of heating lies in the range 3 h to 4 h. 11. The method of bonding according to claim 1, wherein the bonding is performed using a two-component epoxy adhesive, the step of applying pressure and of heating the strip of flexible sheet is performed no more than 45 min after said adhesive has been deposited. 12. The method of bonding according to claim 1 wherein the bonding is performed using a polyurethane adhesive, the step of applying pressure and heating the strip of flexible sheet is performed no more than 15 min after said adhesive has been deposited. 13. The method of bonding according to claim 1, wherein the heating of the bonded strip of flexible sheet is stopped at least 30 min before ceasing to apply pressure. 14. The method of bonding according to claim 1, wherein the strip of flexible sheet is applied over two adjacent supports, pressure is applied while applying additional continuous pressure on the zone of said strip that is situated over a junction line between the two supports, so as to create in said line a deformation of the strip that penetrates into a junction zone and thus absorbs wrinkles that appear over the length of said strip of flexible sheet. 15. A method of bonding a strip of flexible sheet on at least one rigid support, said strip of flexible sheet constituting a part of a sealing membrane for a wall of an insulated tank for confining a liquefied gas, integrated into a load-carrying structure of a ship, said sheet and said support comprising at least one continuous thin metal foil, bonded in a sandwich between two glass fiber fabrics, said insulated tank wall being formed by assembling a plurality of prefabricated panels each of which comprises a seal membrane inserted between two thermally-insulating barriers, said strip of flexible sheet providing continuity of sealing of said sealing membrane at a junction between two prefabricated panels; the method comprising the following successive steps of: de-dusting a bonding zone;depositing a uniform film of polymerizable adhesive on at least one of the two surfaces of the flexible sheet and of the support that are to be bonded together;smoothing said film of adhesive;placing the strip of flexible sheet on the support;roller-pressing the deposited flexible sheet so as to eliminate any residual bubbles; andplacing on said flexible sheet a film to provide protection against adhesive overflowing around said flexible sheet, the protective film being of dimensions greater than those of the flexible sheet;the method comprising subsequently:a step of applying pressure on said whole strip of flexible sheet against the support by means of a press, and of simultaneously heating said whole strip for at least part of the time during which pressure is applied, said pressure and said heating being simultaneously applied to the whole strip, wherein the duration of the heating lies in the range about 1 hour to 7 hours. 16. The method of bonding according to claim 15, wherein the duration of heating lies in the range 3 hours to 4 hours. 17. The method of bonding according to claim 15, wherein the temperature to which the bonded strip is heated is between 50° C. and 70° C. 18. A method of bonding a strip of flexible sheet on at least one rigid support, said strip of flexible sheet constituting a part of a sealing membrane for a wall of an insulated tank for confining a liquefied gas, integrated into a load-carrying structure of a ship, said sheet and said support comprising at least one continuous thin metal foil, bonded in a sandwich between two glass fiber fabrics, said insulated tank wall being formed by assembling a plurality of prefabricated panels each of which comprises a seal membrane inserted between two thermally-insulating barriers, said strip of flexible sheet providing continuity of sealing of said sealing membrane at a junction between two prefabricated panels; the method comprising the following successive steps of: de-dusting a bonding zone;depositing a uniform film of polymerizable adhesive on at least one of the two surfaces of the flexible sheet and of the support that are to be bonded together;smoothing said film of adhesive;placing the strip of flexible sheet on the support;roller-pressing the deposited flexible sheet so as to eliminate any residual bubbles; andplacing on said flexible sheet a film to provide protection against adhesive overflowing around said flexible sheet, the protective film being of dimensions greater than those of the flexible sheet;the method comprising subsequently:a step of applying pressure on said whole strip of flexible sheet against the support by means of a press, and of simultaneously heating said whole strip for at least part of the time during which pressure is applied, said pressure and said heating being simultaneously applied to the whole strip, wherein the heating of the bonded strip of flexible sheet is stopped at least 30 minutes before ceasing to apply pressure.
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이 특허에 인용된 특허 (3)
Dhellemmes Jacques,FRX ; Jean Pierre,FRX, Impermeable and thermally insulating tank comprising prefabricated panels.
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