Abstract: A process for recausticizing green liquor in a sulphate or Kraft process for wood pulp production, in which a green liquor consisting of an aqueous solution of sodium carbonate as the major component and sodium sulphide is admixed with calcium oxide in a slaker and undergoes a reaction in a recausticizer to form an aqueous suspension containing sodium hydroxide and calcium carbonate as the major components, which suspension is filtered on a first filter and subsequently, after dilution with water in a dilution vessel, is fed over further filters two or three times and filtered to separate solids suspended therein, characterized in that after a first separation of calcium carbonate as the major component and calcium oxide as the minor component, carbon dioxide is added to the aqueous suspension at least during dilution in a dilution vessel and in particular in the dilution vessel (s) upstream of a second and/or a third filter.

Abstract: In a bag with a jacket wall composed of at least two layers closed in each case by means of a longitudinal adhesive seam to form a tube and having two front ends, and with folded bottoms closing the bag at the front ends, and with a filling opening for introducing a filling material, wherein the jacket wall has at least one paper layer and the at least one paper layer at least largely determines the load-bearing capability with filled weight and the mechanical stability of the bag, the usefulness of the bag is improved by the fact that the jacket wall has, on its outside, a layer of a plastic film with a thickness of 60 pm or less, which surrounds the at least one paper layer and protects it from moisture and, in an area of overlapping ends, has adhesion points (K) between which air removal paths (Z) are formed.

Abstract: A method and apparatus for manufacturing food wrap paper. A paper web is formed and its first side is subjected to on-line surface treating by applying barrier material such that a water vapor and grease resistant barrier coating is formed onto the paper web. The forming and on-line surface treating are made so that after the on-line surface treating, the paper web has basis weight of 25.5 g/m2 to 34 g/m2 when measured in balance moisture.

Abstract: A method and apparatus for manufacturing medical paper for medical sterilization packaging, medical paper and medical sterilization packaging are disclosed. A paper web is formed of fibrous substrate comprising cellulosic fibers and optionally synthetic fibers, with opposite first and second sides. On-line with the forming of the paper web, reinforcing material is applied on the first side and pressed into structure of the paper web such that delamination resistance of the structure is increased. Sealing material is applied on the second side of the paper web on-line with the forming of the paper web.

Abstract: In a bag with a jacket wall composed of at least two layers closed in each case by means of a longitudinal adhesive seam to form a tube and having two front ends, and with folded bottoms closing the bag at the front ends, and with a filling opening for introducing a filling material, wherein the jacket wall has at least one paper layer and the at least one paper layer at least largely determines the load-bearing capability with filled weight and the mechanical stability of the bag, the usefulness of the bag is improved by the fact that the jacket wall has, on its outside, a layer of a plastic film with a thickness of 60 pm or less, which surrounds the at least one paper layer and protects it from moisture and, in an area of overlapping ends, has adhesion points (K) between which air removal paths (Z) are formed.

Abstract: The present invention relates to a modified pulp. The modified pulp according to the invention contains at least one substance a) selected from the group consisting of clays, at least one substance b) selected from the group consisting of monomeric, oligomeric or polymeric quaternary ammonium compounds and at least one substance c) selected from the group consisting of alkoxylated fatty alcohols. The invention also relates to the use of the pulp according to the invention for the production of pulp/plastic composite materials.

Abstract: In a water-soluble unbleached bag paper comprising lignin-containing cellulose fibers as main component and one or more additive(s), at least one surfactant is contained as additive, and the bag paper has a relative wet strength of less than 6% after a 5-minute wetting time. Furthermore, a paper bag comprised of water-soluble unbleached bag paper is described.

Abstract: The present invention provides a process liner for the preparation of foamed plastic blocks or slabs which exhibits excellent mechanical properties including tear strength, dimensional stability and flexibility while being transparent and allowing easy separation from the produced foam material. The process liner comprising a transparent support polymer film (A) and a transparent peelable polyolefin film (B) provided thereon, wherein the support film (A) has a weight per area of 10-100 g/m2 and is made of a polymer having a melting point of 130° C. or more according to DSC measurement; and wherein the peelable polyolefin film (B) has a weight per area of 10-50 g/m2 and is made of a polyolefin having a melting point lower than the melting point of the polymer of the support film (A) by 10° C. or more. Furthermore, a method for producing the process liner is provided and a process for the preparation of foamed plastic blocks or slabs in a continuous production line.

Abstract: A composite material made of a plastic base material with particles or fibres of renewable raw materials such as wood fibres, abaca, cellulose fibres, regenerated cellulose fibres, hemp fibres or flax fibres embedded therein and optionally a bonding agent, also contains a wetting agent selected from a polyethylene glycol with an average molecular weight of 90 to 40,000 and/or a polyvalent alcohol.

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 foil made of two plastic films and an adhesive layer laminating the two films together, wherein the first plastic film has a first side and a second side and comprises punctures therebetween. The foil is of a dual peel-seal type such that the first plastic film realizes a first peel-able seal within the foil at its first side in the form of an adhesion peel seal in an open state and/or in the form of a cohesion peel seal in a sealed state, and wherein the adhesive layer leaves open the punctures such that gas can penetrate through the punctures in-between the two films towards the first peel-able seal.

Abstract: In a reclosable bag (20) a zipper (Z) is provided on the inner surfaces (50) of the plastic film and the two parts of the zipper (Z) are fixed on the opposite inner surfaces (50) of the bag (20), wherein the zipper (Z) is connected to the inner surface (50) of the plastic film in such a manner that between the welded regions (12, 14) between the zipper (Z) and the inner surface (50) of the plastic film, recesses (15, 13) are left free in the longitudinal direction of the zipper (Z) to form a seal-free longitudinal channel and in the transverse direction of the zipper (Z) to produce free air or steam passage openings at defined distances between the zipper (Z) and the inner surface (50), through which openings a passage of steam is possible, wherein ends of the openings facing the interior (60) of the bag (20) are larger than ends of the openings facing the exterior (70) of the bag (20).

Abstract: In a method of manufacture for a packaging film, a pour-hole film strip is supplied to a film web and with its film strip sealing layer is attached to that side of the film web which, when the packaging film is used as prescribed, forms a film inner side of the packaging so that a tensile force can be transmitted via a pull tab in the packaging film to a separating region in the film strip sealing layer and said separating region and an adjoining region of an adhesive layer form a reclosure cooperating with the pull tab.

Abstract: In a method for surface-treating paper, in particular paper printable by ink-jet printing, in which an aqueous solution containing at least one water-soluble salt of a bivalent metal and optionally one or several substances selected from a binder, a pigment, a surface sizing agent and/or a cationic polymer is applied to a base paper containing cellulose fibers and optionally fillers, an optical brightener, retention aids or dyes or pigments, an unsized base paper is formed from a pulp comprising cellulose as a main component, between 0 and 50% by weight, in particular 10 and 30% by weight, of CaCO3 as a filler, and optionally an optical brightener or a retention aid, and the base paper is coated with a liquid surface treatment medium comprising between 1 and 20 kg/t paper of MgSO4 and the paper is optionally subjected to a post-treatment step.

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: To empty a bag which has at least one cross bottom (4) which is covered with a bottom cover sheet (18) and which has an essentially rectangular shape and is glued together out of corner tucks (11) angled from narrow sidewalls via folding lines and out of bottom flaps (12) angled from wide sidewalls via folding lines (13, 14), there is provision, according to the invention, whereby the bottom cover sheet (18) is drawn off, starting from a narrow sidewall, from the respective corner tuck (11) and from part of the adjoining bottom flaps (12), whereby the bottom flaps (12) are torn on the far side of the corner tuck, transversely with respect to their free edges, as far as the adjoining wide sidewall, in order to separate a part (12?) of the bottom flaps (12), and whereby the separated parts (12?) of the bottom flaps (12), together with the corner tuck (11), are bent, by being folded up about the folding lines (13, 14, 23), into a pour-out channel (24), via which the emptying of the bag contents takes place.

Abstract: A multilayer bag includes at least one outer paper layer and at least one inner paper layer and a synthetic layer located between the outer and an inner paper layer. On the longitudinal side of the paper bag, an overlap of the outer paper web and a partial overlap of the synthetic web is provided, and the outer paper web is partially adhered to itself in the region of overlap.

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.