摘要:
For the evacuation of a low-vacuum chamber (4) and of a high-vacuum chamber (5), two pump trains (6, 7) are provided, each consisting of a vacuum pump unit (8, 9) and a forepump unit (10, 11). The forepump unit (11) of the pump train (7) of the high-vacuum chamber (5) can draw selectively from the vacuum pump unit (9) of the high-vacuum chamber (5) or from a high-vacuum pump unit (12) connected likewise to the high-vacuum chamber (5). The vacuum pump unit (9) can aspirate either from the highvacuum chamber (5) or from the low-vacuum chamber (4) and discharge to the forepump unit (10) of pump train (6) or to the forepump unit (11) of pump train (7).
摘要:
The invention relates to a substrate carrier comprising two vertical plates and two horizontal plates. In order for the substrate during its transport through a sputter unit to be coated uniformly in its margin regions, a lever arrangement is provided between the two vertical plates. The lever arrangement comprises at least one horizontal web which under the effect of heat expands to a lesser degree than the horizontal plates.
摘要:
The invention relates to a method and device for the determination of the gas permeability of a container, for example, a PET bottle. Said container is enclosed by a sheath, which hermetically seals the container from the environment. The intermediate space, between the container and the sheath, has only a very small volume in comparison to the volume of the container. The determination of the gas permeability is begun by bringing said intermediate space to, for example, atmospheric pressure, whilst the container is filled with a test gas by means of a special feed, until the container is at an overpressure relative to the intermediate space. The pressure in the intermediate space increases by means of the resulting diffusion of the test gas through the wall of the container into said intermediate space. The increase in pressure per unit time is a measure of the permeability of the container.