Patent DE-102009049386-A1 (DE)
Title: Method for flat gluing of contact surfaces of two objects, comprises applying a defined adhesive volume per unit of area on one of the contact surfaces and joining both contact surfaces and pressing against each other
Inventor: SCHEUGENPFLUG ERICH
IPC: B05C9/08
Filed: 2009-10-14
Abstract: The method for flat gluing of contact surfaces of two objects (1a, 1b), comprises applying a defined adhesive volume per unit of area on one of the contact surfaces (2a, 2b), joining both contact surfaces and pressing against each other over a defined time and with a defined joining pressure and hardening the adhesive in joining condition of both objects. Low pressure such as vacuum is used on the adhesive position during gluing. The application with low pressure is retained during joining and also during pressing. The method for flat gluing of contact surfaces of two objects (1a, 1b), comprises applying a defined adhesive volume per unit of area on one of the contact surfaces (2a, 2b), joining both contact surfaces and pressing against each other over a defined time and with a defined joining pressure and hardening the adhesive in joining condition of both objects. Low pressure such as vacuum is used on the adhesive position during gluing. The application with low pressure is retained during joining and also during pressing in which the environment of the objects to be glued is subjected with vacuum, and/or the application with low pressure is concluded so that the adhesive distributes itself to a gapless area during the joining, and an additional joining pressure ejects over the net weight of the object during carrying out the application, and/or the low pressure (7) application is carried out during applying the joining pressure and hardening. The application with lower pressure is started during application of a sealing liquid between two housing parts. The application with ultrasound is carried out during application of the adhesive. The application of the adhesive (4) with point-forming dosing nozzle (3) is carried out by defined application quantity per time and defined processing speed of the dosing nozzle. The application of the adhesive is carried out in the form of adhesive beads between which the edges of the adhesive surface are present in open adhesive bags. The adhesive bead is formed in zigzag manner and has a star shape. The adhesive bead comprises a uniform cross-section or a cross-section from the base of the adhesive bead to open side of the adhesive bead. The adhesive is applied in the form of adhesive bead that is arranged in zigzag manner and passes in longitudinal direction and also in transverse direction, and/or the adhesive bead comprises a closed contour connecting the adhesive surface to external edge. The adhesive bead is spiral by which the contour of the adhesive surface is adapted in spiral form, whose external wall is connected at the end with the wall. The adhesive is a two-component adhesive or multi-component adhesive that is mixed directly before the application over the dosing nozzle automatically in a dosing unit. The adhesive is used that consists of filling material in the form of solid material, whose grain size corresponds to the desired thickness of the adhesive layer after the hardening. The adhesive bead is subjected by the dosing nozzle spaced in length-wise direction of the dosing nozzle, where the actual layer thickness of the adhesive exists after hardening the adhesive. An independent claim is included for a device for flat gluing contact surfaces of two objects against each other.