Abstract: A counterfeit-proof metal foil is textured in at least a given partial area of its surface, this partial area having a radiation refraction value which is different compared to the remaining surface area. The metal foil is suitable as a packaging material, among others for medications. The manufacturer or the consumer can check based on the given surface structure which is intended as an identification sign whether he has acquired an uncounterfeited product. If texturing takes place on most of the surface of the metal foil, this is identical to the appearance of a printed picture so that the metal foil as claimed in the invention is likewise used as a decorative foil or an advertizing medium.

Abstract: The present invention pertains to a packaging element comprising a supporting material fitted, on its face turned opposite the package, with a layer presenting a marking area and, on its face turned to the package, with a rough surface coating. The coating roughness has a depth of 1 to 100 &mgr;m, which can be obtained by using granulous filling material. The rough surface packaging element is suited as a covering element, including for yoghurt, as well as in the production of labels for bottle finishes.

Abstract: The description relates to vinyl alcohol copolymers which can be produced by the acid-catalysed acetalisation reaction of polyvinyl alcohols with a degree of saponification of 80-99.5 mol % and preferably between 88 and 99.5 mol % with natural substances or their derivatives containing carbonyl or presumptive carbonyl groups. The description also relates to water-soluble films containing such vinyl alcohol copolymers, the solubility of which can be adjusted to the desired solution temperature. Said water-soluble films are used as packaging materials and auxiliaries, e.g. in the form of sealing lacquers.

Abstract: The invention relates to the use of biodegradable graft copolymers producible in the presence of empirically determined quantities of water from polyvinyl alcohols with a degree of saponification of 88 to 99.5 mol. % by an acid catalysed acetalisation and/or transacetylisation reaction with carbohydrates containing carbonyl groups or presumptive carbonyl groups, in which the degree of acetqalisation, expressed in carbonyl equivalents per 100 vinyl alcohol equivalents, is between 0.2 and 20, and preferably between 1 and 10, as a plasticiser for the thermoplaticisation of starch and/or starch mixtures.

Abstract: A piece of goods to be packaged is wrapped in a wrapping sheet of flexible packaging material made of two different layers or laminated composite materials. Two overlapping marginal areas of the packaging material are sealed or glued together to form the bottom of the package. The layer or laminated composite material that faces the packaged goods within the top marginal area of packaging material has one or several cut-outs, through which both overlapping marginal areas of packaging material are interconnected.

Abstract: In a package, especially a pouch package, with a covering made of a flat foldable packaging material in which the inner sides of two strip-like edge regions are sealed together in a joining region to form the covering, there is a strip-like tear region in the package covering which starts from one of the two strip-like edge regions, extends substantially prependicularly thereto and has notches or linear punched-out regions only within the strip-like edge region. Here, at the beginning of the rear region between the two strip-like edge regions, there is a tab of flat material which is firmly secured to the edge region from which the tear region starts and is secured detachably or not at all to the other edge region, while the remainder of the flat of the tab projects beyond the edge of the edge region.

Abstract: A tubular pouch is provided with a tear-open strip which begins at a U-shaped perforation formed in one of two edge strips of the pouch which are joined across a junction area by cold-sealing into tubular pouch fins. The U-shaped perforation defines a grip formed by the wrapping material inside it and includes legs extending toward and entering the junction area. However, in its remaining portion, the U-shaped perforation does not reach as far as the junction area and thereby manufacturing tolerances relating to the U-shaped perforation and the relief cold bondings as well as lateral shifts between the two edge strips cannot result in bonding of the grip. When the grip is pulled to open the wrap, the wrapping material tears from the ends of the perforation along approximately parallel lines. The grip can be advantageously folded over 180.degree. in order to be readily grasped.

Abstract: The invention concerns a tube-pouch wrap comprising a fin 2 within which two strip edges 3 of the wrapping material are joined together at their inner sides by a peelable cold seal, the junction area including one sub-section 4 at each end of the two edge strips 3 and an unsealed middle zone 5 being present between said subsections. An adhesive label 6 is folded about the fin edge 8 to connect the two edge strips 3 of the fin to close the wrap hermetically and to serve as an opening accessory, said adhesive label covering the middle zone 5 and overlapping the two sub-sections of the fin 2 by bonding to the fin surface. At one side of the fin, the adhesive label 6 comprises a strip edge 11 forming a grip 12 unbonded to the fin surface. Advantageously the fin 2 is so folded on the wrap envelope 13 and bonded to it that the grip 12 is uppermost.

Abstract: The invention concerns an essentially hermetic wrapping, in particular a tubular pouch wrapping, comprising two strip-like edge zones of the wrap material that are joined together by sealing, and two incisions 4, 18, 24, 28 are present in at least one of the two said edge zones, the wrap material forming a grip tab between said two incisions by means of which a tear-open region is pulled off when the wrapping is being opened.

Abstract: Package for packing pieces of goods, especially subdivided or subdividable packing goods having an at least approximately even surface area, with a wrapper made of foldable packing material and having at least two strip-shaped doubling areas, each being formed by two strip-shaped areas of the packing material connected with each other at the surface of the packing material generally facing the packing goods, to form a strip-shaped sealing zone, so that each doubling area shows an outer edge, whereby the wrapper is opened by severing the sealing of the sealing zone of at least one of the doubling areas, characterized in that the wrapper includes two of said spaced strip-shaped doubling areas (23', 24') at said at least approximately even surface area, that each of the outer edges of each of these doubling areas (23', 24') are formed by the outer edges of the two strip-shaped areas of the packing material forming the doubling area, and that a tearing up zone (26) is laterally defined by two of said outer edges

Abstract: Method for the production of a compound foil as an endless strip, the compound foil to be processed in the form of rectangular blanks covering a width of the endless strip characterized in that two different foil strips, of which a first strip contains an aluminum foil (4) or a paper are drawn through a lamination machine with tractive forces to overcome friction losses in the machine, these tractive forces producing different elongations in said two different foil strips, that one of the endless strips is provided at one side surface with a binding agent over a connecting surface, which consists of several partial areas (3, 13) separated from each other, that the two strips are connected to each other while the both strips being elastically stretched to different elongations as the strips are drawn through the lamination machine whereby after the two foil strips coming back again to their non-stretched starting state, that surfaces of the blanks each have one central area and two margin areas (9, 12) borderi

Abstract: In an easy-to-open chocolate package, the wrapper has two areas (2, 3,23', 24') where the packing material is folded in two, made of two layers of packing material sealed together by their inner side, lying on an essentially even upper surface of the wrapper and laterally enclosing a tearing up zone (18, 26) of the wrapper, so that when the package is torn open the wrapper is opened up in these areas. In an embodiment as a cylindrical bag, the tearing up zones (18, 26) extend until the free edge (11, 11') of a fin (10, 10') by which the tearing up zone (18, 26) is held when tearing the package open. These areas (2, 3) where the packing material is folded in two preferably take the form of folds, one flank of which is provided with a break line (4) of the packing material, along which the material is torn when the package is opened.

Abstract: Gas-sealed pack for receiving pieces of a material such as chocolate tablettes. It consists of an envelope (9) of a flat and foldable material, having two edge regions (6, 6') inside which is located a detachable joining strip (7) to provide a sealed closure, preferably by cold sealing. These edge regions are folded back onto the upper surface of the envelope (9). The outside of the edge region (6'), which is applied to the top surface of the envelope (9), is linked at least on part of its surface with the surface of the envelope (9) preferably by means of a hot melting adhesive. The other edge region (6), which is not connected to the upper surface of the envelope (9), does not extend as far as the joining strip (7). A fold (3) is preferably arranged on this edge. The inner surfaces of the envelope are joined by cold sealing. Thus the pack is preferably designed in a tubular shape.

Abstract: Gas-tight packages for enclosing solid articles such as chocolates and other non-perishable baked goods in the form of a tubular pouch package which is easily opened and can be stream lined wherein the pouch has a gas-tight envelope made of a flexible sheet-like packaging material provided with zones where the packaging material is doubled and with a tear-open means.

Abstract: A package for packaging solid products with a wrapping formed from a flat, foldable packaging material and provided with a means to aid in opening the wrapping, the wrapping having a strip-shaped lamination segment of the packaging material formed by two layers of the packaging material joined together by a strip-shaped bonding segment, perforations and/or material weaknesses being provided in the strip-shaped bonding segment (15,20,26,32) as the means to aid opening situated in one of the two layers (11,18,27,33) of the lamination segment (2,17,25,31).

Abstract: A pack for packaging articles having a tear-open member (7) and consisting of a flexible and foldable packaging material having a doubled region in which said packaging material is formed of two layers (4,5) bonded to each other with a bonding agent and on which the beginning of the tear-open member is located, the said two layers of packaging material and tear-open member being optionally bonded to one another in a gas-tight manner, the region surrounding the tear-open member being substantially completely encircled by lines of weakness in the packaging material and optionally to the edge of the doubled region.

Abstract: A bottle closure cap stampable from sheet metal as a shallow cylindrical inverted dish having a rounded juncture forming a fillet between its crown and its cylindrical wall; a layer of elastomeric material being disposed in the fillet and engageable with the axial end of the bottle when the cap is attached. A generally radially extending rip tab is integral with the cylindrical wall at the bottom edge thereof and is adapted to tear through the cylindrical wall by a generally circumferential pull of the user to gain access to the container. A rip line is provided commencing at a corner defined by the bottom edge of the cylindrical wall where it meets the rip tab. At least one groove is formed in the rip tab extending in the inner surface of the side wall. The rip line extends at a shallow angle across the cylindrical wall, without crossing the groove, continuing to a level which is spaced below the crown, continuing parallel to the crown circumferentially about half-way around the closure cap.

Abstract: A bottle closure cap stampable from sheet metal as a shallow cylindrical inverted dish having a rounded juncture forming a fillet between its crown and its cylindrical wall; a layer of elastomeric material being disposed in the fillet and engageable with the axial end of the bottle when the cap is attached. A generally radially extending rip tab is integral with the cylindrical wall at the bottom edge thereof and is adapted to tear through the cylindrical wall by a generally circumferential pull of the user to gain access to the container. A rip line is provided commencing at a corner defined by the bottom edge of the cylindrical wall where it meets the rip tab. The rip line extends at a shallow angle across the cylindrical wall to a level which is spaced below the crown, continuing parallel to the crown circumferentially about half-way around the closure cap.

Abstract: A process for the preparation of an improved base for offset printing plates comprising superimposing together two prerolled aluminum ribbons with an individual thickness of 0.12 to 0.5 mm, rolling the said superimposed ribbons to an individual ribbon thickness of 0.08 to 0.22 mm whereby the mutual contact surfaces have an uniform surface roughness, separating the two ribbons and forming a stable aluminum oxide layer on the uniformly roughened surfaces which have improved properties when used as a base for offset printing plates.