Abstract: Embodiments of the present disclosure relate to a method of preparing polyethylene compositions comprising polymerizing ethylene in a first gas-phase reactor and polymerizing ethylene in a second gas-phase reactor in the presence of hydrogen; wherein at least one of the first or second gas-phase reactors comprises a first and second polymerization zone; wherein a hydrogen pressure of the first and second polymerization zones are different such that at least a portion of the second ethylene cycles through the first and second polymerization zones and a gas mixture of each polymerization zone is partially or totally prevented from entering the other zone.

Abstract: A securing device for securing the locking of a locking element including a locking element that moves from a first locking position into a second locking position. The locking element produces locking in the second locking position. The securing device further includes an indicator element for indicating an item of information. In the first locking position, the indicator element is visible and is not concealed. The indicator element has one or more orientation elements for marking a position of the indicator element. The indicator element can be detected via the one or more orientation elements. In the first locking position, the one or more orientation elements are made at least partially unidentifiable, such that the indicator element cannot be detected. In the second locking position of the locking element, the one or more orientation elements are made identifiable, such that the indicator element can be detected.

Abstract: A securing device for securing a lock of a locking element. The securing device includes a locking element, which can be moved from a first locking position into a second locking position. The locking element produces locking in the second locking position. The securing device further includes an indicator element having an identifying feature for indicating an item of information; and a contrasting element having a contrasting surface which forms a contrast in relation to the identifying feature, such that the identifying feature is discernible when the identifying device is placed above the contrasting surface and is not discernible when the identifying device is not placed above the contrasting surface. In the first locking position, the identifying feature is not placed above the contrasting surface and is not discernible. In the second locking position, the identifying feature is placed above the contrasting surface and is discernible.

Abstract: A securing device for securing the locking of a locking element, including a locking element, which can be moved from a first locking position into a second locking position. The locking element produces locking in the second locking position. The securing device further includes a flap element including an identifying feature and a concealing feature, which are placed in an absolute position relative to one another on the flap element. The flap element may be moved from a first flap position, in which the concealing feature conceals the identifying feature, into a second flap position, in which the identifying feature is visible, when the locking element is in the second locking position. The identifying feature indicates an item of information.

Abstract: A securing device for securing the locking of a locking element includes a locking element, which can be moved from a first locking position into a second locking position. The locking element produces locking in the second locking position. The securing device further includes an indicator element having an identifying feature for indicating an item of information. In the first locking position of the locking element, the identifying feature is part of a second identifying feature, and therefore the identifying feature cannot be discerned separately. In the second locking position of the locking element, the identifying feature is not part of the second identifying feature, and therefore the identifying feature can be discerned separately.

Abstract: A securing device for securing the locking of a locking element including a locking element, which can be moved from a first locking position into a second locking position. The locking element produces locking in the second locking position. The securing device further includes an indicator element including an identifying feature for indicating an item of information. In the first locking position of the locking element, the identifying feature is visible within a first field of view. In the second locking position of the locking element, the identifying feature is visible within a second field of view.

Abstract: A securing device for securing the locking of a locking element includes a locking element, which can be moved from a first locking position into a second locking position. The locking element produces locking in the second locking position. The securing device further includes an indicator element for indicating an item of information and an optically modifying element. In the first locking position of the locking element, the optically modifying element optically modifies a representation of the indicator element such that the indicator element is not able to indicate an item of information. In the second locking position of the locking element, the optically modifying element does not optically modify the representation of the indicator element such that the indicator element indicates an item of information.

Abstract: A polyethylene composition particularly suited for producing blow-molded hollow articles, having the following features: 1) density from 0.948 to 0.955 g/cm3; 2) ratio MIF/MIE from 60 to 120; 3) MIF from 15 to 45 g/10 min.; 4) ER values from 2 to 5.0; said composition being obtainable by contacting a precursor polyethylene composition with a radical initiator.

Abstract: A polyethylene composition particularly suited for producing blow-molded hollow articles, having the following features: 1) density from 0.948 to 0.960 g/cm3; 2) ratio MIF/MIE greater than 125; 3) MIF from 20 to 40 g/10 min.; 4) ER values from 5 to 10.

Abstract: A polyethylene composition particularly suited for producing blow-molded hollow articles, having the following features: 1) density from more than 0.955 to 0.965 g/cm3; 2) ratio MIF/MIE from 60 to 125; 3) MIF from 15 to 40 g/10 min.; 4) ER values from 3.0 to 5.5; 5) 110.02 equal to or lower than 150,000 Pa·s.

Abstract: A sheet-fed printing machine contains a printing unit, a drier, and a sheet handling device for transporting or guiding print sheets. The sheet handling device has an opening disposed downstream of the drier in the direction of transport. A humidification device for rehumidifying the print sheets is disposed in such a way that it rehumidifies the print sheets through the opening. The sheet handling device may contain a guide plate or several guide plates.

Abstract: A sheet-fed printing machine contains a printing unit, a drier, and a sheet handling device for transporting or guiding print sheets. The sheet handling device has an opening disposed downstream of the drier in the direction of transport. A humidification device for rehumidifying the print sheets is disposed in such a way that it rehumidifies the print sheets through the opening. The sheet handling device may contain a guide plate or several guide plates.

Abstract: A method for depositing wet printed sheets and forming a sheet stack in a delivery of a printing machine. An auxiliary stack which is separate from the sheet stack has sheet-shaped intermediate layers that are usable as moisture barriers in the sheet stack. A plurality of sheets are stacked on top of one another to form a first section of the sheet stack. Then an intermediate layer is moved from the auxiliary stack onto the section of the sheet stack. A plurality of sheets are stacked on top of one another and on the intermediate layer to form a further section. The intermediate layer is thus arranged in the sheet stack between the first section and the further section. The placement of the intermediate layers provides a way of reducing or even eliminating quality losses in sheets and/or sheet stacks caused by moisture and moisture exchange.