Abstract: A pigment-coated paperboard is provided which comprises a paperboard substrate on which there are coextruded a top film of polyethylene terephthalate and an intermediate layer of an acrylic ester copolymer containing from about 1/2 to about 15% pigment particles. Such coated paperboard is particularly suitable for use in containers for food, for book covers, expansion envelopes, business folders and the like. When the pigment is aluminum powder, trays made from the coated paperboard are suitable for use as disposable roller print trays.

Abstract: Pressure-sensitive material for use in a copy system comprising a substrate bearing isolated droplets, e.g., in microcapsules, of an oily solvent are provided with an acid-sensitive chromogenic compound and a phenolic ester, said phenolic ester being an oil soluble compound that is capable of stabilizing the colored marking. Upon release of the chromogen and the phenolic ester from the microcapsules or the like, the ester is hydrolyzed in the presence of moisture and an acidic material to form the corresponding phenol, which in turn, stabilizes the colored marking. In such form, the phenolic compound will not prematurely react with the chromogen, and it is shielded from any chemical reaction with materials in other parts of the copy system.

Abstract: A take out carton and a blank for forming the same is disclosed having a flat top portion and unique locking closure which provides additional stability for the carton. More particularly, a carton is disclosed having a tubular side wall and an auto-erecting lock bottom. The subject carton further includes a pair of opposed top panels, each having a pair of tab receiving apertures disposed adjacent the side edges thereof. A pair of opposed closure panels are provided each including two triangles. Each triangle further includes a central fold line defining a pair of minor triangular portions. The carton may have a generally inverted truncated pyramidal configuration to permit stacked nesting of the plurality of cartons. In the closed condition of the carton, the top edges of the top panels are in abutting relationship to define the flat top configuration.

Abstract: A stick feeding apparatus includes a storage hopper which feeds sticks one at a time past an agitator to a delivery chute. The delivery chute leads to a delivery roller having uniformly-spaced longitudinal recesses in its surface. The roller rotates within a housing having a stick inlet opening and a stick delivery opening. A hydraulically or pneumatically driving apparatus steps the roller in one direction at a predetermined rate. A plurality of delivery rollers, each supplied from its own hopper, may be mounted on a common shaft driven by a single driving mechanism.

Abstract: Starch fibrids useful in enhancing the physical properties of non-woven webs, e.g., paper, are produced by a process which comprises providing an aqueous, alkaline solution of a water-insoluble starch in a finely divided form, e.g., in the form of an aerosol, and introducing the finely divided starch solution into an agitated, aqueous precipitating medium comprising a precipitating salt to thereby produce starch fibrids characterized by having both film and fiber morphology. The starch fibrids are recovered from the salt-containing liquid and may be incorporated into paper to improve the physical properties thereof.

Abstract: A paperboard tray and a blank therefor is disclosed which is collapsible to form a carton. More specifically, the subject tray may be collapsed and sealed to hold a product and may then be subsequently opened and reformed into a tray for use in serving or cooking. A pair of handle flanges are provided defining carrying handles when the tray is opened and for structurally rigidifying the tray and preventing its inadvertent collapse.

Abstract: An article carrier and a blank for forming the same is provided having an integral carrying handle which is configured to relieve local stress in the area of the handle which would otherwise tend to tear or deform the paperboard material from which the carrier is formed. More particularly, a cut line is provided in a top panel of the carrier which defines a handle tab that pivots about a hinge line. In addition, the cut line includes two portions which extend beyond the top panel into the opposed side panels of the carrier and are contiguous with a pair of stress relieving apertures also disposed in the opposed side panels.

Abstract: A paperboard carton and blanks therefor formed from a top unit and a bottom unit which are relatively slidable. A locking mechanism prevents the units from being fully separated. This locking mechanism comprises a locking flap hingedly coupled to and folded against a side wall on either of the top and bottom units and a corresponding stop member formed on an opposed side wall of the other of the top and bottom units. The stop member is comprised of two side glue flaps extending integrally from two adjacent side walls, each having a tab extending therefrom. The tabs engage the distal end of the folded locking flap to prevent full separation. Advantageously, the locking flap is trapezoidal and the side glue flaps form a trapezoidal recess with the tabs forming the smaller base thereof. An air freshener material or insect poison can be located inside the carton.

Abstract: A composite packaging system is disclosed including a plurality of inner wedge shaped cartons each having a slanted rear wall thereby conforming to the configuration of a piece of pie. An outer carton is disclosed, having a generally parallelogram configuration in plan, which is adapted to hold an even number of inner wedge shaped cartons. The unique configuration of the outer carton permits the loading of the inner wedge shaped cartons therein in an array such that each panel of the inner wedge shaped cartons is in abutting relationship with either a wall of the outer carton or with a panel of an adjacent wedge shaped carton. By this arrangement, the inner cartons are prevented from shifting within the outer carton thereby preventing damage thereto.

Abstract: An aqueous starch-based adhesive comprising: (a) water; (b) corn starch or wheat starch; (c) a carboxylated styrene-butadiene latex; (d) a thickener; and (e) a crosslinking agent. The thickener and cross-linking agent are collectively present as a minor component. A preferred thickener is a mixture of hydroxyethylcellulose and ammonia and the preferred crosslinking agent is a mixture of a ureaformaldehyde resin and glyoxal. The adhesive has a solids content of between about 35 and about 50 weight percent and pH ranging from about 4.5 to 7.0. The aqueous adhesive can be used to provide corrugated paperboard at rates ranging from 300 to 550 linear feet/minute and has a stable pot life of up to one week. It results in little or no corrosion to corrugating equipment and can be used in the same application and storage systems with conventional starch adhesives. Preparation of the adhesive is simplified because it need not be heated.

Abstract: Apparatus for feeding, scoring, gumming, and folding a blank into an envelope.

Abstract: A process and apparatus is disclosed for thermoforming an all plastic carton used to house a fluid with integral, kidney-shaped depressions in adjacent side walls of the carton to serve as handle members to aid in pouring the fluid contents from the carton. A pair of mandrels are inserted through opposite ends of a tubular enclosure formed from the carton blank. The mandrels are provided with a toroidal shaped cavity where they meet inside the enclosure. The enclosure is heated and a pair of complementally shaped, dies are rotated exteriorly of the enclosure into the toroidal cavity in the mandrels on adjacent sidewalls of the carton to form the handle depressions.

Abstract: A folder-container for a sterile tube and fittings. The folder-container positioning the tube and fittings in a single package which may be wrapped with sheet material such as a thermoplastic sealable material. The folder-container bottom wall is die-cut to provide a plurality of upstanding tabs to receive the coiled tube and any tubular fitting attached thereto and is arranged to position any other fitting associated with said tube.

Abstract: A process of making polyethylene pellets from polyethylene broke comprising forming a polyethylene solvent-free aqueous slurry of said broke and defibering said slurry to produce a polyethylene slurry having a fiber to solid polyethylene ratio of no more 1:20, dehydrating said polyethylene slurry to less than about 15% water, and pelletizing the polyethylene.

Abstract: A one-piece collapsible or knockdown tray for displaying cylindrical articles is provided with an integral platform connected to a bottom edge of the rear wall of the tray for supporting the tray at an inclined angle to a horizontal supporting surface, so that the cylindrical articles housed within the tray can be readily viewed.

Abstract: A container with a vent arrangement and a blank for forming same has inner and outer trays which are telescoped relative to one another. The venting arrangement includes an inner vent flap on the inner tray and an outer vent flap on the outer tray which are aligned and define apertures in their respective trays. Each vent flap may be selectively opened and closed to control access to the container interior. A locking arrangement is provided on the inner vent flap and on the inner tray for retaining the inner vent flap in an open position in which the inner vent flap holds the outer vent flap in its open position.