B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
B29C 65/52 (2006.01) G11B 7/26 (2006.01) B32B 31/12 (2000.01)
Patent
CA 2299255
The invention relates to a method for sticking two halves (23, 24) of a dvd (digital versatile disc). Said halves are held at a distance from each other so that a gap forms between them. The adhesive (36) is then introduced into said gap and is spread over both halves. The invention is characterised in that the adhesive is introduced via the central hole in the DVD by means of e.g., L-shaped metering needles (63) which are pivotably guided in a central pin, said pin dipping into the central hole (51), or flexible plastic needles which are guided in a guiding tube in such a way that they can move. Introducing the adhesive via the central hole means that the adhesive can flow freely out of the metering needle as the DVD halves (23, 24) turn. There is no build-up of adhesive in front of the metering needle and the sticking process can continue until the spinning process is complete, without any interruption of the application of adhesive.
L'invention concerne un procédé permettant de coller deux moitiés (23, 24) d'un DVD - digital versatile disc -. Ces deux moitiés sont maintenues à une certaine distance l'une de l'autre de manière à former un espace entre elles. La colle (36) est introduite dans cet espace puis répartie sur les deux moitiés. L'invention est caractérisée en ce que la colle est introduite par le trou central du DVD. Pour ce faire, il faut par exemple des aiguilles de dosage (63) en L introduites de manière pivotante dans un boulon de centrage (51) inséré dans le trou central, ou bien des aiguilles plastique flexibles introduites de manière coulissante dans un tube de guidage. L'introduction de la colle par le trou central permet à la colle de s'évacuer vers l'extérieur sans gêner l'aiguille de dosage quand les deux moitiés (23, 24) du DVD tournent. La colle ne s'accumule pas devant l'aiguille de dosage. Ce processus de collage peut être exécuté sans interruption de l'application jusqu'à la fin du séchage centrifuge.
Fetherstonhaugh & Co.
Krauss-Maffei Kunststofftechnik Gmbh
LandOfFree
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