摘要:
A machine converts a web of preformed pouches, which are defined by transverse seals extending from a remote edge, into inflated dunnage units. A sealing arrangement is positioned to provide a longitudinal seal intersecting the transverse seals to close the preformed pouches and form a dunnage unit. The sealing arrangement has at least two sealing belts. Each belt is positioned so that respective first sides engage a surface of the web and pull the web through sealing elements positioned on either side of the web. A heating element is on a second side of the first belt not engaging the web. A compliant material is on a second side of the second belt not engaging the web. As the web passes between the heating element and compliant material, imperfections in the web are smoothed by the compliant material and the layers of the web are sealed by the heating element.
摘要:
A method and an apparatus for producing a three-dimensional decoration piece that does not damage the tacky bonding or adhesion strength of the lower layer material of the decoration piece. The method includes putting an upper layer material on a first table operating as cathode; lowering an upper mold operating as anode onto the first table, emitting a high frequency wave for dielectric heating; stopping the high frequency dielectric heating; moving a second table carrying a lower layer material having a tacky bonding property to below the upper mold; and lowering said upper mold onto the second table. In the apparatus, the second table or the lower mold is provided on the top surface thereof with recessed sections that are transversally and inwardly separated from a position where an edge of the first machining means contacts, by 0.2 mm to 1 mm; and a cushion member being arranged in the respective recessed sections.
摘要:
The invention relates to a device for heat sealing a film lid placed on the rim of a glass, the device comprising a deformable and thermally conductive element designed to press against the film lid and the rim and to heat the film lid and the rim. A peripheral portion of the conductive element is arranged to extend beyond the rim. The device has means for hinging and suspending the conductive element, and means for transmitting a pressure force exerted by an actuator to the conductive element, which force transmission means are distinct from the means for hinging and suspending the conductive element.
摘要:
There is described a sonotrode for sealing an opening device onto a hole of a packaging material destined to from a sealed package, comprising: a sealing surface adapted to cooperate with a said packaging material in order to seal the opening device to the packaging material; a cavity bounded by an opening of sealing surface and adapted to receive the opening device; and a ring made in an elastomeric material, partially protruding inside the cavity, and adapted to center a first axis of the opening device on a second axis of the sonotrode.
摘要:
A sealing jaw assembly for a sealing unit, and in particular an arrangement for suspending a sealing jaw in a socket is disclosed. The arrangement is based on a first and a second spring arrangement wherein the action of the first spring arrangement onto the sealing jaw may be activated and deactivated.
摘要:
A compound heat seal structure that, when heat-sealing a bag with a stacked area level difference, reliably seals even a section having different level and that can be easily opened. A compound heat seal structure is provided as a peelable seal in a band shape on a bag and a linear heat seal is added as a peelable seal in that band-shaped peelable heat seal in the longitudinal direction thereof.
摘要:
In an automated machine that forms a vertically positioned and horizontally traversing web of plastic film into bags and fills the bags with material, after the bags are filled, a pair of gripping fingers clampingly grip and pull the bag upper longitudinal edge portions into a sealing gap between a pair of heat seal bars whereat the bag walls are heat fused together and the bag is sealed closed. A pair of clamp bars below the heat seal bars clampingly engage the bag walls after they are pulled into the gap and prior to heat sealing. The filled bags are linked along their longitudinal edge portions with perforations therebetween. The bags are severed from one another at a perforation when the gripping fingers pull the bag walls into the gap. The gripping fingers are carried on and are moved longitudinally with a pair of belts located vertically above the gap.
摘要:
A packaging device, particularly for vacuum packaging, and particularly for packaging trays containing food products, which comprises a heat-sealing and cutting station for heat-sealing a film on the edge of a tray and for cutting the film, the device further comprising a supporting surface that comprises a plurality of receptacles that accommodate a plurality of dies which can have different dimensions and/or formats in order to accommodate trays of different dimensions and/or formats, the supporting surface being actuatable in order to move one of such dies at the heat-sealing and cutting station.
摘要:
Pressure pad for a heat-sealing device in a packaging machine, the heat-sealing device having a heat-sealing jaw and a counter-jaw adapted to seal together two surfaces of a packaging material when the jaws are pressed together. The pressure pad comprises a first portion, adapted to be mounted on the counter-jaw of the heat-sealing device, and a second portion, in use arranged towards the heat-sealing jaw of the heat-sealing device. A cross-section of said second portion, along the extension of the pressure pad, has a substantially constant arc-shape of the outer contact surface in use facing the heat-sealing jaw. The pressure pad is made up of a resilient material, and the cross-section of said arc-shaped outer contact surface has a radius of curvature of 15 mm±5 mm. The invention further relates to a heat-sealing device having such a pressure pad.
摘要:
An apparatus for inflating and sealing packing cushions has a drive mechanism for feeding a preconfigured film material to a sealing mechanism in a flattened state without wrinkles in the sealing region in which a longitudinal seal is formed. A feed mechanism includes a drive mechanism for advancing the film along a path, a first guide member which contacts a first surface of the film material in a first longitudinal region, and a second guide member which contacts the first surface of the film material in a second longitudinal region laterally offset from and parallel to the first longitudinal region. In some embodiments, the first and second guide members are adjacent belts. In other embodiments, the first and second guide members are stationary guide members or “skis.” The sealing mechanism may include a rotary sealing element and opposed backing element, such as a belt or a wheel.