Patent DE-102013001794-A1 (DE)
Title: Making multi-layer composite structure by applying triangular shaped media beads between surface of first substrate and center axis of nozzle of application unit in X-shaped or strip shaped arrangements, and forming protection barrier
Inventor: SCHULENBURG MATTHIAS
IPC: B05C1/02
Filed: 2013-01-24
Abstract: The method comprises simultaneously applying triangular shaped media beads (5) under an application angle of 45-90[deg] between a surface (7) of a first substrate (2) and a center axis of a nozzle of an application unit in X-shaped (6) or strip shaped arrangements applied to the first substrate, forming a protection barrier against influence of external media pressure acting on adhesive strength in the media beads, applying a second substrate (3) to the first substrate in the beads, and pressing the substrates against one another under pressure. The method comprises simultaneously applying triangular shaped media beads (5) under an application angle of 45-90[deg] between a surface (7) of a first substrate (2) and a center axis of a nozzle of an application unit in X-shaped (6) or strip shaped arrangements applied to the first substrate, forming a protection barrier against influence of external media pressure acting on adhesive strength in the media beads, applying a second substrate (3) to the first substrate in the beads, and pressing the substrates against one another under pressure. The X-shaped arrangements are positioned one another. The beads are laterally positioned opposite to one another in the X-shaped arrangement. The first and second substrates are placed one another in the X-shaped arrangement. The X-shaped arrangement is superimposed on the beads during the compression of the X-arrangement, forms a high strength adhesive layer. The beads include cold or heat-curable adhesives or sealants, which have a higher viscosity than the adhesive layer and are pressed outwards simultaneously. The protection barrier is applied on the adhesive layer when the substrates are joined to each other. The beads have same or different adhesive strengths. The nozzle of the application unit is located on or is robot-controlled in a linear guide, a linear table or on a manually operable gun device. The application of the bead is performed based on the viscosity of media of beads with identical or different pressures. A distance between the nozzle of the application unit and the first substrates is constant with respect to a projection surface of a cross-section of the nozzle during bead application step. The beads are applied side by side in the form of strips. The beads are formed with identical or different widths in the two strip-shaped arrangement, and are completely enclosed with an adhesive agent. The external media include air, UV radiation, chemicals, salt, water, and oil. The bead is optimized and a sufficient adhesion of the bead is generated in a cycle time of a composite structure production process during compression of the adhesive agent. The composite structure is formed from two substrates and multiple layers of media. The method further comprises applying a layered arrangement on the first substrate. The layered arrangement includes an intermediate layer formed of different adhesives between two layers of the agent. The nozzle is comprised in chambers for receiving media, and has rectangular orifices. The chambers are regulated by a stored computerized algorithm in a computer. A discharge rate of the media is determined based on a height of the orifices of nozzle, the application angle, the speed and/or direction between the first substrate and the nozzle of the application unit. An electrically conductive adhesive layer is formed during compression of the X-arrangement, and ensures a contact between the two substrates. The protection barrier is formed as the electrically conductive adhesive layer and a sealing-material-layer. An independent claim is included for an application unit.