A system and method of manufacturing reinforced bags having reinforcing elements applied about the bags to support the bags in an opened and/or upstanding configuration. A web of bag material can be fed from a supply and can be folded and secured to form the bags. A series of reinforcing strips can be fed through an adhesive application station for application of an adhesive material thereto in a desired pattern. The reinforcing strips and bags are brought into registration and are adhesively attached to form the reinforced bags.

A separation welding device for the sectional joining and sectional separation of weldable film layers includes a temperature-controlled working surface that is designed to support joinable and separable film layers and further includes an electrical heating device as well as a counterholder for sectionally applying pressure to the joinable and separable film layers, which delimits a variably adjustable working gap with the working surface and that includes two mutually spaced joining stamps and one separating stamp arranged between the joining stamps wherein the separating stamp and/or at least one joining stamp is moveably attached to the counterholder wherein provision can be made for the separating stamp and/or the joining stamp to each be assigned a force sensor and/or a motion sensor to calculate a separation sequence determined by the separating stamp and/or a joining sequence determined by the joining stamp.

A separation welding device for the sectional joining and sectional separation of weldable film layers includes a temperature-controlled working surface that is designed to support joinable and separable film layers and further includes an electrical heating device as well as a counterholder for sectionally applying pressure to the joinable and separable film layers, which delimits a variably adjustable working gap with the working surface and that includes two mutually spaced joining stamps and one separating stamp arranged between the joining stamps wherein the separating stamp and/or at least one joining stamp is moveably attached to the counterholder wherein provision can be made for the separating stamp and/or the joining stamp to each be assigned a force sensor and/or a motion sensor to calculate a separation sequence determined by the separating stamp and/or a joining sequence determined by the joining stamp.

A bag making apparatus and a bag making method make bags. The bag has a first panel part and a first flap part formed by folding a first sheet part, and a second panel part and a second flap part formed by folding a second sheet part. The first and second panel parts face each other. The first and second flap parts are interposed between the first and second panel parts and face each other. An open edge is formed by folded edges of the first and second sheet parts. The bag further comprises adhesive located between the open edge and the engagement tool, interposed between the first and second flap parts and extending across the widths of the first and second sheet parts to peelably adhere the first and second flap parts to each other. Alternatively, the second sheet part may only consists of the second panel part.

A bag making apparatus and a bag making method make bags. The bag has a first panel part and a first flap part formed by folding a first sheet part, and a second panel part and a second flap part formed by folding a second sheet part. The first and second panel parts face each other. The first and second flap parts are interposed between the first and second panel parts and face each other. An open edge is formed by folded edges of the first and second sheet parts. The bag further comprises adhesive located between the open edge and the engagement tool, interposed between the first and second flap parts and extending across the widths of the first and second sheet parts to peelably adhere the first and second flap parts to each other. Alternatively, the second sheet part may only consists of the second panel part.

A bag machine for production of bags made of paper material includes an unwinding device to unwind and feed paper material in a transport direction (x), a device to produce weakening lines partially offset in direction (x), so that a first wall of the bag continues in at least one tab that extends beyond a second wall, a tube-forming device, in which side areas are folded to form an overlapping area, a separation device to separate tube sections along the weakening lines, and a bottom formation device, in which areas of a leading end of the tube section are folded and fastened onto an outer wall thereof. The machine has a device for application of adhesive surfaces to the paper material, with which an adhesive surface is applied to an area of the paper material that represents the side of the tab facing the second wall in the finished bag.

A packaging bag has a bag body on a paper basis, which has front walls that lie opposite one another, side walls arranged between the front walls, and longitudinal edges that connect the front walls with the side walls. A material section that forms the assigned front wall and a material section that forms the assigned side wall, are connected with one another on the longitudinal edges to form a reinforcement fold that runs in the longitudinal direction, by way of a fixation layer that borders on each longitudinal edge. The fixation layer assigned to at least one of the reinforcement folds is an adhesive layer, wherein regions of the bag body between the reinforcement folds are free of an adhesive layer.

A packaging bag has a bag body on a paper basis, which has front walls that lie opposite one another, side walls arranged between the front walls, and longitudinal edges that connect the front walls with the side walls. A material section that forms the assigned front wall and a material section that forms the assigned side wall, are connected with one another on the longitudinal edges to form a reinforcement fold that runs in the longitudinal direction, by way of a fixation layer that borders on each longitudinal edge. The fixation layer assigned to at least one of the reinforcement folds is an adhesive layer, wherein regions of the bag body between the reinforcement folds are free of an adhesive layer.

Bags for containing various retail items, such as food items, and methods of forming the same. In some aspects, a bag having a top and bottom is provided. The bags can include a first layer and a second layer opposite the first layer and uniformly extending from the first layer. In some aspects, the bag can further include a first side seam between a side of the first layer and an opposing side of the second layer and a second side seam between a side of the second layer and an opposing side of the second layer. The first layer and the second layer each have an un-folded edge substantially parallel to the bottom fold. In some aspects, the bags include a bottom V-shaped fold extending along a transverse axis relative to the first side seam and the second side seam, the bottom V-shaped fold forming a seamless bottom.

A thermoplastic film which embodies a three-dimensional pattern. The thermoplastic film comprises a three-dimensional pattern including at least three sub-patterns of deformations. The shape, positioning, and pattern deformation density of the at least three sub-patterns of deformations cause the three-dimensional pattern to give the thermoplastic film a thicker appearance.