Abstract: A description is given of the use of a polymer dispersion for cold sealing, the polymer dispersion comprising a polymer in dispersion in water and having a glass transition temperature in the range from ?20 to +10° C., said polymer being preparable by emulsion polymerization of radically polymerizable monomers in the presence of at least one polymeric protective colloid, and the polymer being formed to an extent of 0.05 to less than 1 wt % of a monomer M, selected from the group consisting of (meth)acrylate monomers having a substituent of the formula where X is CH2, O, NH or NR, and R is a C1 to C4 alkyl group. Descriptions are also given of a method for producing cold-sealed packaging, and of the packaging obtainable by said method.

Abstract: A polymeric woven bag has a first panel and a second panel and an open end of the bag to be pinched closed. A first layer of heat activated adhesive material is on a portion of the bag to form an adhesive-to-adhesive seal by contact with a second layer of heat activated adhesive material on a portion of the bag. second panel, wherein a chemical family of the adhesive layers comprises, distillates, petroleum and ethanamine or naphthene components, and wherein the first adhesive layer and the second adhesive layer have respective heat activation temperatures below the softening point temperature of the polymeric bag material.

Abstract: A UV-curable pressure sensitive adhesive, a package having an adhesive-based reclosable fastener including the pressure sensitive adhesive, and a method of forming the package is described herein. The package includes a cavity and opposing panels configured to cover an opening to the cavity. The reclosable fastener is a UV-cured pressure sensitive adhesive comprised of one or more UV-curable acrylic oligomers, one or more tack control components, and, optionally, an elastomeric material. An adhesive component ratio defines an effective ratio made up of the weight percent of the UV-curable acrylic oligomer relative to the sum of the weight percents of the tack control component and elastomeric component, where the ratio provides a fastener with a first peel adhesion and subsequent peel adhesions effective to form the adhesive-based fastener into a reclosable fastener.

Abstract: Described is a recloseable pack having a cold-sealed layer of adhesive which is recloseable after the pack has been opened, the layer of adhesive comprising an emulsion polymer composed to an extent of at least 60% by weight of principal monomers selected from the group consisting of C1 to C20 alkyl (meth)acrylates, vinyl esters of carboxylic acids comprising up to 20 C atoms, vinylaromatics having up to 20 C atoms, ethylenically unsaturated nitriles, vinyl halides, vinyl ethers of alcohols comprising 1 to 10 C atoms, aliphatic hydrocarbons having 2 to 8 C atoms and one or two double bonds, and mixtures of these monomers, the emulsion polymer being preparable by emulsion polymerization of free-radically polymerizable monomers in the presence of at least one protective colloid. Also described are aqueous polymer dispersions suitable for producing the pack of the invention, and polymer films coated with the polymer dispersions.

Abstract: A polymeric woven bag has a first panel and a second panel and an open end of the bag to be pinched closed. A first layer of heat activated adhesive material is on a portion of the bag to form an adhesive-to-adhesive seal by contact with a second layer of heat activated adhesive material on a portion of the bag. second panel, wherein the first adhesive layer and the second adhesive layer have respective heat activation temperatures below the softening point temperature of the polymeric bag material, and wherein sealing the bag end after the bag has been filled with contents by heat activating the first layer of adhesive material and the second layer of adhesive material at a temperature below the softening point temperature of the polymeric bag material.

Abstract: Easily and securely gripped slip-resistant file folders including file pockets and hanging folders. The folders comprise a front flap having a top edge, a rear flap connected to the front flap by a folder bottom, the rear flap also having a top edge. A slip-resistant portion is disposed on at least one of the flaps near the top edge. Methods for producing the folders are also disclosed.

Abstract: A pair of specially designed suction wheels are preferably placed after the glue applicator on a known pinch bottomer bag-making machine. During manufacture, paper bags are guided horizontally through the machine by a conveyor forming part of the machine. With this arrangement, one of the suction wheels is placed under the bag, and the other wheel is placed over the bag in line. As each bag is moved by the conveyor, both suction wheels are brought into motion like a rolling operation. Each wheel has a shaft with a hollow channel going to a suction cup at the periphery of the wheel. The number of suction cups around the circumference of the wheel could be any amount. In a preferred embodiment, there are 12 equally spaced suction cups. A vacuum pump with a hose is connected onto the shaft. The pump draws air through the channel which comes from a suction cup so that, when the bag comes into the vicinity of the suction cup, the cup sticks on the bag layer.

Abstract: In making a tubular bag, a first band of thermosetting glue is printed across the length of a web, and a second and third band of such glue is printed on the opposite side of the web in registry with the ends of the first band. The printed glue is then dried with a heat below that of the softening temperature of the thermosetting glue. Glue is applied to a marginal edge of the web and the marginal edges are overlapped and thus glued together as a back seam. An increment of the tube is severed at said bands without heating such bands, and the web is folded along a line extending centrally through the glue bands. The bands are simultaneously clamped together and heated to fuse the bag layers together at the bands.

Abstract: A tamperproof bag is provided with closure means comprising a strip of microcapsules containing an adhesive core enclosed by a shell adapted to be broken by pressure application to release the adhesive contents. The microcapsules are applied to the bag by means of a binder system or by depositing them onto an adhesive tie-coat previously applied to the bag.

Abstract: A double envelope construction comprised of one envelope inside another envelope is formed in one pass on an envelope folding machine by providing a pre-cut envelope blank and a paper blank of smaller size than the envelope blank, adhering the paper blank to the envelope blank by means of fugitive adhesive, applying remoistenable seal gum to the flap portion of the envelope blank, drying the seal gum, and scoring the adhered together envelope and paper blanks at predetermined locations and folding the scored blanks while applying adhesive to predetermined areas thereof to form an outer envelope from the envelope blank and an inner envelope inside the outer envelope from the paper blank. The envelope blank or the paper blank, or both, may be preprinted prior to being fed to the envelope folding machine or may be printed by a printer in-line with the envelope folding machine.