Method and apparatus for bonding two halves of a DVD (digital Versatile disc)
AssigneeKrauss-Maffei Kunststofftechnik GmbH
InventorMartin Eichlseder
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AssigneeKrauss-Maffei Kunststofftechnik GmbH
InventorMartin Eichlseder
Estimating the term…
A method for bonding two DVD halves (23, 24) which are so held at a distance as to form a gap therebetween, includes introducing into the gap an adhesive (36) and spreading the adhesive across both disc halves. The invention is characterized by introducing the adhesive via a central opening of the DVD by means of e.g. L-shaped metering needles (63) which are pivotally guided in a central pin that engages the central opening, or flexible plastic needles which are slidably guided in a guide tube. Through introduction of the adhesive via the central opening enables a flow to the outside, without interference from the metering needles, when the DVD halves (23, 24) rotate. There is no buildup of adhesive in front of the metering needle. The bonding process can be carried out without interruption of the application of adhesive until the spin-off has concluded.
Apparatus for introducing fluid between two spaced-apart plates provided with central openings, comprising retention means for holding and moving the plates relative to one another;
Dependencies are inferred from the claim text.