A top tool and a bottom tool which can be set relative to one another along an axis perpendicular to a workpiece plane are provided in an apparatus for punching and welding plastic parts. A punch die and a sonotrode are fastened to one of the tools.

In an automated machine that forms a vertically positioned and horizontally traversing web of plastic film into bags and fills the bags with material, the apparatus forms the bags sealed side edges as well as aligned perforations whereat the bags are severed from one another after they are filled with material. The web includes a pair of parallel proximate plastic film walls. A vertically positioned heat seal bar is moveable onto the web severing the walls along a separation line and forming the fore and aft sealed side edges of the bags. A perforation knife is aligned with and positioned vertically above the heat seal bar, and is simultaneously moveable onto the web walls with the heat seal bar thereby forming a vertical perforation line at a web longitudinal edge portion. The separation line and perforation line in the web are thereby aligned.

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.

A system for packaging a product into separate bags, including a station for providing a partly closed bag and adding a quantity of the product into the partly closed bag, a closing station for closing the partly closed bag with the quantity of the product therein, a separating station for separating the closed bag from the sheet-shaped material, and an analyzing station for analyzing the closed bag, where the analyzing station is positioned between the closing station and the separating station and where the closed bag hangs from another bag when analyzed.

In an apparatus for mounting a spout 1 on a plastic film 2 fed longitudinally thereof and intermittently, the plastic film 2 is punched by a punch blade 6. An aperture is therefore formed in the plastic film 2. A carriage 8 is moved for a distance L corresponding to a space between the punch blade 6 and a seal head 9 and between a punch receiver 7 and a seal receiver 10. A spout 1 is inserted into the aperture. The spout 2 and the plastic film 2. are heat sealed with each other by the seal head 9.

Provided is a tape pasting mechanism with multiple functions of clutch-type synchronous punching, tape pasting and cutting which belongs to a tape pasting device for foil and includes a linear drive module, a clutch module, and following modules that are moved by the linear drive module: a punching module, a tape pasting module and a cutting module. The punching module includes a punching needle. The clutch module includes a punching bottom die that mates with the punching needle for punching. The clutch module is movable on the linear drive module together with the punching module.