Abstract:
The present invention provides a separation unit for separating a web material along preformed lines of weakness. The separation unit has a width direction and comprises a first roller having a rotational axis extending in the width direction and a web width extending in the width direction, and a second roller having a rotational axis extending parallel with the rotational axis of the first roller and a web width extending in the width direction. The second roller is positioned at a distance from the first roller, the distance extending in a direction perpendicular to the width direction. Each of the first and the second rollers is provided with a plurality of protrusion elements being spaced along the rotational axes and protruding perpendicular from the axes. Each of the protrusion elements has a maximum width in the width direction, a maximum radial extension from the rotational axes, an inner portion adjacent to the rotational axes, and an outer portion remote from the rotational axes. The outer portions of the protrusion elements on the first roller are arranged in a staggered relationship with the outer portions of the protrusion elements on the second roller such that the outer portions of the protrusion elements on the first roller are partially overlapping with the outer portions of the protrusion elements on the second roller with a radial overlap length, thus forming an undulating passage for a web material between the rollers. Each protrusion element has a maximum width along the width direction within the overlap length, and the sum of the maximum widths within the overlap length of all protrusion elements on one of the rollers is between 5-30%, preferably 12-20% of the web width of that roller.
Abstract:
The present invention provides a separation unit for separating a web material along preformed lines of weakness. The separation unit has a width direction and comprises at least a first roller having a rotational axis extending in the width direction and a web width extending in the width direction, and at least a second roller having a rotational axis extending parallel with the rotational axis of the first roller and a web width extending in the width direction. The second roller is positioned at a distance from the first roller, the distance extending in a direction perpendicular to the width direction. Each of the first and the second rollers is provided with at least one protrusion element extending perpendicularly from the axes. Each of the protrusion elements has a maximum width in the width direction, a maximum radial extension from the rotational axes, an inner portion adjacent to the rotational axes, and an outer portion remote from the rotational axes. The outer portions of the protrusion elements on the first roller are arranged in a staggered relationship with the outer portions of the protrusion elements on the second roller such that the outer portions of the protrusion elements on the first roller are partially overlapping with the outer portions of the protrusion elements on the second roller with a radial overlap length, thus forming an undulating passage for a web material between the rollers. The radial overlap length is between 2-40 mm, preferably 2-20 mm, more preferably 3-12 mm, or most preferably between 4-10 mm.
Abstract:
A dispensing mechanism for a liquid container is arranged in liquid communication with an outlet mechanism. The dispensing mechanism is adapted to translate a user force applied to a user operated portion into a transfer force applied from a user lever to an actuation part. A relationship between a first length and a second length forms a lever ratio. The first length extends from a first pivot axis to a user operated portion and the second length extends from the first pivot axis to a point of action of the transfer force on the actuation part. The lever ratio is adapted to increase from a non-actuated position over at least the first 50% of a dispensing stroke of the actuation part such that the transfer force increases over the at least first 50% of the dispensing stroke when a constant force is applied to the user operated portion.
Abstract:
A separation unit for separating a web material along preformed lines of weakness. The separation unit has a width direction and includes at least a first roller having a rotational axis extending in the width direction and a web width extending in the width direction, and at least a second roller having a rotational axis extending parallel with the rotational axis of the first roller and a web width extending in the width direction. The second roller is positioned at a distance from the first roller. Each of the first and the second rollers is provided with at least one protrusion element extending perpendicularly from the axes. Each of the protrusion elements has a maximum width in the width direction, a maximum radial extension from the rotational axes, an inner portion adjacent to the rotational axes, and an outer portion remote from the rotational axes.
Abstract:
A separation unit for separating a web material along preformed lines of weakness. The separation unit has a width direction and includes a first roller having a rotational axis extending in the width direction and a web width extending in the width direction, and a second roller having a rotational axis extending parallel with the rotational axis of the first roller and a web width extending in the width direction. The second roller is positioned at a distance from the first roller. Each of the first and the second rollers is provided with a plurality of protrusion elements being spaced along the rotational axes and protruding perpendicular from the axes. Each of the protrusion elements has a maximum width in the width direction, a maximum radial extension from the rotational axes, an inner portion adjacent to the rotational axes, and an outer portion remote from the rotational axes.
Abstract:
A dispensing mechanism for a liquid container includes a hollow flexible dispensing portion and a dispenser. The dispensing mechanism includes a first lever arranged to pivot about a first pivot axis and a second lever arranged to pivot about a second pivot axis and includes a user operated portion. The first lever includes a first sliding surface and the second lever includes a second sliding surface. The first and second sliding surfaces bear in sliding abutment against each other at an abutment point. The first and second pivot axes are substantially parallel to each other, and a first plane extends through the first and second pivot axes. In a non-actuated position of the dispensing mechanism, the user operated portion of the second lever and the abutment point are arranged on a first side of the first plane. The first sliding surface at least at the abutment point, is convex and the abutment point remains on the first side of the first plane over at least a first ⅔ of a dispensing stroke of the first lever.
Abstract:
A retention mechanism (1) in a dispenser for retaining an exchangeable roll of material, the retention mechanism (1) comprises a housing (2) including a front wall (21), wherein an insertion slot (4) for a bearing pin (80) of an end plug (5) of the exchangeable roll extends along the front wall (21). A cam lock (6) is arranged in the housing (2) so as to be rotatable in a plane which is parallel to the front wall (21) and to the direction of extension of the insertion slot (4). The cam lock (6) includes a retaining means (12) which is movable between an open position and a locked position by rotating the cam lock (6). When the retaining means (12) are in the open position, the bearing pin (80) can be inserted into the insertion slot (4), and when the retaining means (12) are in the closed position, the bearing pin (80) is retained in a locking section of the insertion slot (4).
Abstract:
A dispensing mechanism (4) for a liquid container (10) arranged in liquid communication with an outlet mechanism for a liquid is provided. The dispensing mechanism (4) is adapted to translate a user force applied to a user operated portion (22) into a transfer force applied from a user lever (20) to an actuation part (18). A relationship between a first length and a second length forms a lever ratio. The first length extends from a first pivot axis (30) to a user operated portion (22) and the second length extends from the first pivot axis (30) to a point of action of the transfer force on the actuation part (18). The lever ratio is adapted to increase from a non-actuated position over at least the first 50% of a dispensing stroke of the actuation part (18) such that the transfer force increases over the at least first 50 % of the dispensing stroke when a constant force is applied to the user operated portion (22). A dispenser (2) for a liquid comprising a dispensing mechanism (4) is further provided.