A system for manufacturing sacks or bags includes at least two sack or bag producing machines which control components are assigned to, and which are connected with each other by at least one transport device and/or one storage device. The system includes a control unit configured such that manufacturing speeds of the two sack or bag producing machines can be transmitted to and/or processed by the control unit. The control unit is configured such that it proposes and/or sets the manufacturing speed of the two sack or bag producing machines based on system operating parameters.

Apparatus for manufacturing an open-mouth bag of at least one layer of a flexible bag material, and method of manufacturing a bag by such apparatus. The apparatus includes a shaping device with a shaping box in the contour of the bag shape to be formed, with a top end and a bottom end, a conveying device for transporting the bag material along the shaping box, a closing device for joining the bag material along the shaping box to form a tube, and a closing station for generating a bag bottom, which is disposed beneath the bottom end of the shaping box. A partial vacuum device is configured to generate intermittently, a partial vacuum. When manufacturing a bag, the bag material is draped around the shaping box in the contour of the bag shape to be formed as continuous material and is joined to form a tube by the closing device.

A film roll on which a tube film is wound is supported by a lower shelf of a frame. The tube film is fed from a reel mechanism. A table for guiding the fed tube film is provided in the upper part of the apparatus. The tube film held by a clip mechanism on the table is drawn to the front end of the table, and the drawn tube film is cut into a predetermined length while being pressed by a press cutter. The clip mechanism is provided with a clip including a pair of fingers for holding the tube film. The clip mechanism is provided on a slide mechanism for reciprocating the clip.

An assembly for the automated production of conical paper sleeves for plants uses paper stock precut in a trapezoid configuration which is continuously fed to the assembly. The precut sheets are folded diagonally twice to form a conical sleeve. The folding process includes application of an adhesive on the overlap of the folded sides to securely seal the sleeve. The precut sheets are transported along the assembly via a series of belts, rollers and electrical motors. The synchronization of the folding process and the application of adhesive is electronically monitored and controlled.

Webs include print patterns repeated at print pitches. The first web is intermittently fed at the print pitch of the first web by a first pair of feed rollers to a section. The second web is fed at the print pitch of the second web by a second pair of feed rollers to the section. The first web and the second web are fed in a superposed state by a downstream pair of feed rollers from the section. A first tension roller and a second tension roller engaging with the first web and the second web are biased by a biasing member via a linkage.

A machine for processing a web of material into bags includes several sections for processing the web of material into bags. An input section is configured to receive a roll of the web of material, a sealing section is configured to form seals in the web of material, and a winder section configured to wind the bags into rolls of bags may be included. A bander section configured to band each roll of bags may be included. A hem forming section configured to form a hem in the web of material may be included. A draw tape unwind station for unwinding draw tape for bags may be included. Related methods are further disclosed.

A leak proof container and a method of forming the container from a blank. The blank includes a bottom panel, first and second side panels connected to the bottom panel at opposing lateral edges, and first and second end portions located at opposing longitudinal ends of the blank. Each end portion includes an inner end panel connected to the bottom panel, an outer end panel connected to the inner end panel, and first and second corner panels forming gussets connected to a respective one of the first and second side panels and connected to the inner end panel. An adhesive area is located on one side of the blank and comprises at least a portion on each of the outer end panel and the inner end panel. The adhesive area adheres the gussets to the inner end panel and to the outer end panel.

Embodiments of a method of printing low volumes of paper bags on a digital printing press are provided. In the method, a plurality of orders are received. Each order includes a particular format relating to a bag size selected from a predetermined number of bag sizes and a graphic to be printed. In the method, the plurality of orders are organized into a plurality of batches. Each batch includes orders of the plurality of orders having a same bag size. A first batch is selected, and the graphic of the orders contained in the first batch is digitally printed on a first roll of paper having dimensions associated with the bag size of the first batch. The first roll of paper is fed through the digital printing press, and the digital printing press prints the graphic of each order contained in the first batch without stopping when transitioning between orders.

A method for manufacturing pouches made of at least partly thermoplastic material, including the steps of superimposing at least two webs of at least partly thermoplastic material, joining the webs at adhesion regions or lines, and cutting the webs at cutting regions or lines in order to provide pouches. In a condition in which the webs are superimposed, the method further includes the step of mutually aligning the webs by causing the elongation of at least one of the two webs via the application of heat.

A system for manufacturing bags with counting marks includes a workstation for making bags, and a coding machine for spraying counting marks on the bags. The coding machine includes a main body, a fixing structure and a spraying gun. The main body has ink cartridges for providing ink and a pressure mechanism to spray the ink through the spraying gun. The spraying gun is fixed to a fixing structure and connected to the main body via a cable such that the ink of the ink cartridges is operably moved from the ink cartridge to the spraying gun via the cable. The cable includes channels, each channel adapted for delivering a respective color of the ink. The spraying gun includes nozzles coupled to the channels for spraying the ink on the bags so as to form the counting marks thereon.