Abstract: In the case of a paper bag having a bag wall (1), which separates an inner bag space from an outer space and has at least one visible side (1a) visible from the outer space and an invisible inner side (1b) of a paper layer which is provided with an embossment (9) in the form of at least one symbol, good visibility of the embossment (9) is combined with gentle treatment of the paper fibers of the paper layer by virtue of the fact that the embossment (9) the embossment (9) is embodied in the form of a surface (10) which is elevated with respect to a plane (12) adjacent to the embossment (9) on the visible side (1a) and, corresponding thereto, as a depression which is present with respect to a plane of the inner side adjacent to the embossment (9) on the inner side (1b), that the elevated surface (10) on the visible side (1a) is connected to the plane (12) of the visible side (1a) by means of a connecting wall (11), and that the transition of the elevated surface (10) to the connecting wall (11) and the transiti

Abstract: A bag, consisting of a single-layer or multi-layer bag wall, which is bonded to form a tube (1) and, at least at one end, has a bottom (4) which is suitable for filling with charge through a filler of a bag-filling machine, is folded and bonded and is realized with a valve opening (13), and said bag wall being designed to dissolve in a moist environment thereby releasing the charge, makes complete dissolving of the bag wall (2) possible even in the region of the bottom (4) which is provided with the valve opening (13), characterized in that the bonding of the bottom (4) is effected using a dextrin adhesive.

Abstract: A bag, consisting of a single-layer or multi-layer bag wall, which is bonded to form a tube (1) and, at least at one end, has a bottom (4) which is suitable for filling with charge through a filler of a bag-filling machine, is folded and bonded and is realized with a valve opening (13), and said bag wall being designed to dissolve in a moist environment thereby releasing the charge, makes complete dissolving of the bag wall (2) possible even in the region of the bottom (4) which is provided with the valve opening (13), characterized in that the bonding of the bottom (4) is effected using a dextrin adhesive.

Abstract: A bag, consisting of a single-layer or multi-layer bag wall, which is bonded to form a tube (1) and, at least at one end, has a bottom (4) which is suitable for filling with charge through a filler of a bag-filling machine, is folded and bonded and is realized with a valve opening (13), and said bag wall being designed to dissolve in a moist environment thereby releasing the charge, makes complete dissolving of the bag wall (2) possible even in the region of the bottom (4) which is provided with the valve opening (13), characterized in that the bonding of the bottom (4) is effected using a dextrin adhesive.

Abstract: The manufacture of a product comprising at least two flexible material layers (14, 15) which are connected to each other by means of an adhesive coating applied to mutually facing inner surfaces of the material layers (14, 15), wherein the material layers (14, 15) are pressed together and are then intermittently perforated, is successfully achieved in a simple manner by virtue of the fact that, simultaneously with the perforation, adhesive (16) is injected from at least one outer side of the material layers (14, 15) into the formed perforation holes, whereupon the adhesive (16) is conducted into the interspace between the material layers (14, 15).

Abstract: A bag having walls formed at least predominantly of paper material, the paper material having been made antistatic by addition of a conductive salt, is made flame retardant at the same time if the paper material has been admixed with a flame retardant in a concentration such that the leakage resistance is <109?.

Abstract: A device for detecting the state of steel-reinforced concrete construction parts, having one or more sensor wires disposed at different distances from a surface of the concrete construction part. The wires are subjected to the corroding influence of the environment of the concrete construction part. The device also includes a measuring instrument, which measures the volume resistance of the sensor wires and an evaluating device, which can supply the measurement values of the measuring instrument either permanently and/or when called up, and which, evaluating from these values, draws conclusions on the depth-dependent corrosion state of the concrete construction part.

Abstract: The invention relates to a vented bag comprising a tubular vent that is secured in a folded base. Said vent comprises an upper face (4) that lies flat on a lower face (2) and consists of a base material that is provided with a weldable layer. The aim of the invention is to obtain a stable connection between the base material and the weldable layer. To achieve this, the weldable layer consists of a polyvinyl alcohol with a saponification degree ?75%, which is applied to the base material in the form of an aqueous emulsion and is then dried.

Abstract: The invention relates to a method for identifying the state (point of rupture 2) of electrically conductive oblong tensioning elements (1) involving the following steps: launching an electromagnetic measurment signal into a tensioning element (1a); changing the frequency; measuring the reflection spectrum, and; indentifying the state of the tensioning element (1a) according to the resonance frequencies. Said signal is lauched on the fore-part or on the periphery. In the event of coupled tensioning element (1), a scattering matrix system of equations is iteratively devised. The invention is used in the construction industry for prestressed concrete structures and rear anchored systems.