System and method for transforming plastic parisons with recovery of blowing air
OwnerFrank Winzinger, Eduard Handschuh +1inventors
InventorsFrank Winzinger, Eduard Handschuh, Katharina Seidenberg
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Abstract
A system (1) for transforming plastic parisons (10) into plastic containers (10a) with a clean room (20), with at least one blow station (8) comprising a blow mold for shaping the plastic parisons (10) by means of at least one process pressure (p1, p2, pi) and with a venting device (3) for venting the process pressure, or a process pressure reduced to recovery pressure (R), into the atmosphere (U), in which the venting device (3) comprises at least one gas pressure changing device (4). According to the invention the gas pressure changing device (4) can adjust and maintain a pressure difference between the clean room (2) and the venting device (3).
Claims16
A system (1) for transforming plastic parisons (10) into plastic containers (10a) with a clean room (20), with at least one blow station (8) comprising a blow mold for shaping the plastic parisons (10) by means of at least one process pressure (p1, p1, p2) and with a venting device (3) for venting the process pressure, or a process pressure reduced to recovery pressure (R), into the atmosphere (U), in which the venting device (3) comprises at least one gas pressure changing device (4), wherein the gas pressure changing device (4) can produce, maintain and in particular also adjust a pressure difference between the clean room (2) and/or a drain conduit (14, 15) connected to the clean room and the venting device (3).
A method for transforming plastic parisons (10) into plastic containers (10a) in a clean room (20) by means of at least one blow station (8) comprising a blow mold in which for the transformation of the plastic parisons (10) these plastic parisons are supplied with at least one process pressure (p1, p2, pi) and the process pressure, or a process pressure reduced to a recovery pressure (R), is vented by means of a venting device (3) into the atmosphere (U), wherein the gas pressure in the venting device (3) is changed at least temporarily by at least one gas pressure changing device (4), wherein the gas pressure changing device (4) produces and/or adjusts and/or maintains a pressure difference between the clean room (2) and/or a drain conduit (14, 15) connected to the clean room and the venting device (3).
Dependencies are inferred from the claim text.