Abstract: An apparatus and a method for the processing of semi-finished sacks and a gluing station for semi-finished sacks include a feed element and a guide element. Semi-finished sacks having more complicated shapes, such as tubular pieces having open bottom squares with valve patches inserted therein, tend to be subjected to a partial gluing process or even suffer damage during the process of glue application in the nozzle clearance. Therefore, at least one feed element is provided, which is disposed upstream of a glue-application gap in the transport direction of the semi-finished sacks, and which together with the guide element defines a feed region of the semi-finished sacks to the application head. Components of the semi-finished sacks are guided through the feed region, which tapers in the transport direction of the semi-finished sacks.

Abstract: A bottomer for the production of sacks, preferably cross-bottom valve sacks, includes at least one glue unit that applies glue to the components of the sacks. The glue unit includes a nozzle bar, which has at least one nozzle for extruding glue onto the sack components. The glue unit also includes a counter support, which positions the sack components with a force against the nozzle bar.

Abstract: The invention relates to an apparatus and a method for the further processing of semi-finished sacks and a gluing station for semi-finished sacks. The invention has shown that particularly semi-finished sacks having more complicated shapes—such as tubular pieces comprising open bottom squares and in this case particularly tubular pieces comprising open bottom squares and valve patches inserted therein—tend to be subjected to a partial gluing process or even suffer damages during the process of glue application in the nozzle clearance. This problem is solved in that at least one feed element is provided, which is disposed upstream of the glue-application gap in the transport direction of the semi-finished sacks, and which together with the guide element defines a feed region of the semi-finished sacks to the application head, through which feed region, at least components of the semi-finished sacks can be guided, and which feed region tapers in the transport direction of the semi-finished sacks.

Abstract: The invention describes a bottomer for the production of sacks, preferably cross-bottom valve sacks (18), which bottomer comprises at least one glue unit (1) that applies glue to the components (2) of the sacks. The glue unit (1) comprises a nozzle bar (4), which (4) comprises at least one nozzle for extruding glue onto the sack components (2). It should be emphasized that a counter support (5) is provided, which positions the sack components (2) with a force against the nozzle bar (4).

Abstract: A device for placing a paper bag bottom produces score lines on the ends of tubular segments which are used for producing bags, applies glue layers to the folded bottoms on the extremities of the tubular segments and/or to sheets for gluing them with the bottoms with the aid of gluers and connects and glues the folded bottoms and the sheets. The device has at least one gluer which includes at least one glue reservoir or at least one glue duct, the glue contained in the reservoir or in the duct being exposed to a pressure higher than ambient pressure. The glue reservoir or the glue duct is provided with at least one output orifice for applying the glue to the sheets and/or to the folded bottoms.

Abstract: The present invention relates to a base insert device for crossed base valve bags for the formation of crossed bases in paper bags, by means of folding devices which introduce folds at the ends of the tubular sections from which the bags are produced, with one or more gluing stations, which apply glue to the regions of the folds for gluing and/or the sheets (5) provided for gluing to the base, in the gluing stations and at least one pressing station in which the folded bases and the sheets (5) are brought into contact and glued. The novelty of the present patent application is that at least one gluing station for the sheets and/or bases is provided, comprising glue outlet openings (22) which may be selectively supplied with glue, whereby the selection of the glue outlet openings (22) defines the format of the glue application (6, 7, 8, 9).

Abstract: The present invention relates to a base insert device for crossed base valve bags for the formation of crossed bases in paper bags, by means of folding devices which introduce folds at the ends of the tubular sections from which the bags are produced, with one or more gluing stations, which apply glue to the regions of the folds for gluing and/or the sheets (5) provided for gluing to the base, in the gluing stations and at least one pressing station in which the folded bases and the sheets (5) are brought into contact and glued. The novelty of the present patent application is that at least one gluing station for the sheets and/or bases is provided, comprising glue outlet openings (22) which may be selectively supplied with glue, whereby the selection of the glue outlet openings (22) defines the format of the glue application (6, 7, 8, 9).

Abstract: The inventive device for placing a paper bag bottom (1) produces score lines on the ends of tubular segments which are used for producing bags (1), applies glue layers to the folded bottoms on the extremities of the tubular segments and/or to sheets (2) for gluing them with the bottoms with the aid of gluers (10, 20, 30, 40), connects and glues the folded bottoms (1) and the sheets (2). Contrarily to presently used devices, said device is provided with at least one gluer (10, 20, 30, 40) which comprises at least one glue reservoir (21) or at least one glue duct (33, 52, 53), the glue contained in the reservoir or in the duct being exposed to a pressure higher than ambient pressure. The glue reservoir (21) or the glue duct (33, 52, 53, 55, 72, 73) is provided with at least one output orifice (71) for applying the glue to the sheets (2) and/or to the folded bottoms (1). The inventive method for operating said device is also disclosed.

Abstract: An operating station (201) for a bottomer for cross bottom sacks (19), whereby the bottomming device comprises of a gluing station (30), in which the gluing format (4, 4a, 4b), according to which the components of the sack are to be glued (19), is defined by means of glue traces (3), whose structure is determined through the opening and closing of the valves (32) and whereby the gluing station (30) is connected with a computing unit (202), with which the selective opening and closing of the valves (32) can be done, in which the digital target images of the glue traces (3), which define the gluing format (4, 4a, 4b) are stored in the memory (207) of the computing unit (202). Inventive is the display element (203), with which the glue deposition (208) on the sack components (1, 2, 48) can be displayed.

Abstract: An apparatus (30, 100, 200) is presented for forming a glue profile for gluing the bottom sheets (2) and/or folded bottoms (1) of tube portions which (1, 2) [sic] are used for forming block bottom bags (19). The device (30,100,200) comprises the following features: at least one first glue reservoir (101) or at least one glue input (111a,b) from which glue is supplied, glue lines (110) which transport glue to the gluing locations, a number of glue valves (32) which are to open and close individually, the glue profile (4) being definable based on the selective opening of the valves (32); glue outputs (71) which are allocated to the valves (32); at least one second glue reservoir (102), by means of which the second glue reservoir (102) can be pressurized. Methods for forming a glue profile (4) are also laid out.