System and corresponding method for hot application of an adhesive composition

Patent metadata

Field	Value
Publication number	US-2018334591-A1
Application number	US-201816049440-A
Country	US
Kind code	A1
Filing date	Jul 30, 2018
Priority date	Nov 29, 2013
Publication date	Nov 22, 2018
Grant date	—

Abstract

A system for hot application of an adhesive composition, comprising an in-line heating device and a corresponding method for hot application of the adhesive composition. The system comprises:
an application nozzle for applying the adhesive composition; a supply line for supplying the nozzle with the adhesive composition to be applied in fluid form; a in-line heating device for heating of the adhesive composition to an application temperature, the heating device comprising:
a static mixture including an electrically conducting material, and an inductive cable surrounding the static mixer.

First claim

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12 . A method for hot application of an adhesive composition on a support, the method comprising:
providing an application system for hot application of an adhesive composition on a support, the system comprising: an application nozzle applying the adhesive composition; a supply line supplying the nozzle with the adhesive composition to be applied in fluid form; an in-line heating device heating the adhesive composition to an application temperature, the heating device comprising:
a static mixer including an electrically conducting material, and
an inductive cable surrounding the static mixer;
providing a storage reservoir comprising the adhesive composition to be applied and connected to the supply line of the application nozzle; circulating the adhesive composition from the storage reservoir to the in-line heating device; heating the pumped adhesive composition to the application temperature, by the supply of electric power to the inductive cable of the heating device; hot application of the adhesive composition on a support by means of the application nozzle.

13 . The hot application method according to claim 12 , wherein the adhesive composition is applied with a viscosity of 15 Pa·s±5 Pa·s.

14 . The hot application method according to claim 13 , wherein the application system comprising a pump for circulating the adhesive composition in the supply line, the pump being able to circulate an adhesive composition having a viscosity of 1,000 Pa·s.

15 . The hot application method according to claim 12 , wherein the adhesive composition is applied at a temperature of 50° C. to 140° C.

16 . The hot application method according to claim 12 , wherein the static mixer of the heating device comprises:
a sheath forming a portion of the supply line for supplying the adhesive composition, the sheath being made in an electrically insulating material, and a mixing element having deflective surfaces for deflecting the adhesive composition circulating in the sheath, the mixing element being made in an electrically conducting material and positioned in the sheath.

17 . The hot application method according to claim 16 , wherein the mixing element positioned in the sheath has a heat exchange surface density greater than or equal to 5*10 3 m −1 .

18 . A method for hot application of an adhesive composition on a support, the method comprising:
providing a support; applying an adhesive composition onto the support by means of a method for hot application of an adhesive composition on a support, the method comprising:
providing an application system for hot application of an adhesive composition on a support, the system comprising:
an application nozzle for applying the adhesive composition;
a supply line for supplying the nozzle with the adhesive composition to be applied in fluid form;
an in-line heating device for heating the adhesive composition to an application temperature, the heating device comprising:
a static mixer including an electrically conducting material, and
an inductive cable surrounding the static mixer;

providing a storage reservoir comprising the adhesive composition to be applied and connected to the supply line of the application nozzle;
circulating the adhesive composition from the storage reservoir to the in-line heating device;
heating the pumped adhesive composition to the application temperature, by the supply of electric power to the inductive cable of the heating device;
hot application of the adhesive composition on a support by means of the application nozzle;
crosslinking the adhesive composition applied at a temperature of 50° C. to 200° C.

19 . The method hot application method according to claim 18 , wherein the static mixer of the heating device comprises:
a sheath forming a portion of the supply line for supplying the adhesive composition, the sheath being made in an electrically insulating material, and a mixing element having deflective surfaces for deflecting the adhesive composition circulating in the sheath, the mixing element being made in an electrically conducting material and positioned in the sheath.

20 . The method for producing a crosslinked adhesive support according to claim 19 , wherein the mixing element positioned in the sheath has a heat exchange surface density greater than or equal to 5*10 3 m −1 .

21 . The hot application method according to claim 16 , wherein the sheath is glass or polymer without any conductive fillers.

22 . The hot application method according to claim 19 , wherein the sheath is glass or polymer without any conductive fillers.

Assignees

• Bostik Sa

Inventors

• Chartrel Jean Francois

Classifications

• B01F3/2284

  Operations & Transport · mapped topic

• B05D1/02

  performed by spraying · CPC title

• B05B15/20

  Arrangements for agitating the material to be sprayed, e.g. for stirring, mixing or homogenising · CPC title

• B29B13/022

  Melting the material to be shaped · CPC title

• B01F2015/062

  Operations & Transport · mapped topic