Abstract: A method for forming a thermoplastic film handled bag comprising: forming a continuous collapsed thermoplastic tube having heat seal lines across the width of said tube at bag length intervals, longitudinally folding opposite sides of the heat sealed tube equally towards each other until they meet at a common center line, folding the structure once again in the same direction along said center line and removing eight film layers in one of the corner regions defined by a heat seal line and the spine of the common center line fold, the film removal yielding a bag mouth opening and single loop handles at near the opposite ends of said bag mouth opening. Interconnected bags can be formed into a roll pack or individually severed bags can be unitized into a bag pack.

Abstract: Thermoplastic films comprising laminates of polyolefin and a relatively thinner polyamide layer are employed as protective coverings over agricultural fields, which have been treated with fumigants. The improved resistance to fumigant vapor penetration of such laminates results in improved retention of the volatile fumigant materials in contact with the soil which is being treated.

Abstract: A stretch wrap film having one-sided cling of a thermoplastic A/B layer film structure wherein layer A in its stretched condition has a comparatively high cling force to layer B and layer B has at least substantially no cling force to a layer of itself and has a slide property when layer B is in contact with a layer of itself with relative motion therebetween and the surface of layer B presents sufficient area of an organic polymer which of its very nature causes the no cling force and the slide property.

Abstract: A thermoplastic bag structure having, in its lay-flat condition, a front and rear bag wall, two-film heat seal bottom; the outer side margins of the full length of said bag being folded toward but spaced from each other. The top most edge of each fold is heat sealed through the four films thereof along lines corresponding to the width of the folds. An open mouth top portion being characterized by having double film handle loops at opposite ends of said mouth, said double film loops being extensions of the folded regions of said bags and the corresponding regions of said front and rear walls. The bag structures can be unitized by providing a detachable tab at the bag mouth opening and unitizing the bag structures through this tab.

Abstract: A thermal plastic film bag structure having front and rear walls, gusseted side walls and a sealed bottom. This bag which has a tendency to form holes in the bottom at the seal transition point between the four layers of the gusset and the two layers of the central region of the bag is improved by providing seal areas, e.g. circular seals which are located slightly above the bottom seal line and slightly inside of the vertical line formed by the innermost reach of the gussets on both sides of the bag. The seal areas relieve strain at the weak regions in the bottom of the bag.

Abstract: A method for forming a thermoplastic film handled bag comprising: forming a continuous collapsed thermoplastic tube having heat seal lines across the width of said tube at bag length intervals, longitudinally folding opposite sides of the heat sealed tube equally towards each other until they meet at a common center line, folding the structure once again in the same direction along said center line and removing eight film layers in one of the corner regions defined by a heat seal line and the spine of the common center line fold, the film removal yielding a bag mouth opening and single loop handles at near the opposite ends of said bag mouth opening. Interconnected bags can be formed into a roll pack or individually severed bags can be unitized into a bag pack.

Abstract: A bag pack including a plurality of stacked bags each bag having loop handles which are integral extensions of the front and rear walls of the bag. Between the handles are a pair of superimposed single film tab members extending above the front and rear bag walls and above the open mouth portion of the bag. The front tab is coplanar with the front wall and either (1) completely unconnected thereto or (2) weakly connected thereto. The rear tab is coplanar with the rear wall and connected thereto through a localized line of film weakening which is comparatively stronger than (2) above. The individual bags may be bonded together through the tabs. The pack has suspension means in association therewith.

Abstract: An animal repellent composition comprising an animal repellent proportion of an olfactory animal repellent carried by a vehicle comprising a di(alkhyl) adipate and a method of repelling animals.

Abstract: Polymer blends comprising a continuous matrix phase of thermoplastic polymer with a discontinuous phase of thermoplastic polymer distributed through it are produced by extruding a blend of immiscible thermoplastic polymers through an annular extrusion die which subjects the polymer blend to transverse shear forces prior to passing through the die lips. The application of the shear forces to the polymer blends produces improved uniformity of distribution of the continuous phase within the matrix, producing better properties in the finished article which may be a blown film or a blow molded product. The continuous matrix phase is suitably a polyolefin such as polyethylene and the discontinuous phase may be selected to provide the desired properties in the extruded article, for example, vapor barrier properties, strength, stiffness, and tear resistance. Typical polymers for the discontinuous phase are polyamides, EVA copolymers, polyacrylonitrile, polystyrene and various copolymers.

Abstract: A rigid container having a bottom and walls and a peripherally depending rigid skirt for offsetting the bottom of the container from a support surface. The skirt has one or more spaced orifices and affixed to the underside of the bottom of the container is a ratchet bar. A pawl including, a pawl escapement tooth, a pawl arm and a vertical member extending at right angles to the pawl arm, is located through the orifice of the skirt so as to be in slideable engagement with the ratchet bar. This arrangement is adapted to receive a supply package of liner bags located between the upright member and the wall of the container. The supply package is of sufficient resiliency so as to permit locking engagement of the package between the upright member and the container.

Abstract: A wastebasket and storage shelf combination including a rotatable planar support member carrying a removable wastebasket and a height-adjustable shelf member both kept in position by cooperative association with a vertical wall member.

Abstract: A pigmented, heat-sealable coating composition for application to a primer-coated, oriented mono-layer or multilayer polyolefin film is provided which comprises a blend of (a) a binding and oxygen barrier effective amount of a heat-sealable polyvinylidene chloride homopolymer and/or polyvinylidene chloride copolymer containing at least about 50 weight percent copolymerized vinylidene chloride, (b) an amount of wax sufficient to result in a significant reduction in the coefficient of friction of a film to which the coating composition is applied and (c) an amount of pigment sufficient to result in a significant reduction in the light transmission property of a film to which the coating composition is applied.Oriented polyolefin films coated with the foregoing compositions possess excellent seal strength and hot tack properties, good blocking resistance, low coefficient of friction, low oxygen transmission rate and low light transmission.

Abstract: An apparatus and method for forming one or more pleats in a continuously advancing sheet of indeterminate length are provided. The apparatus includes a first roll, over which the sheet passes while a streak of adhesive is laid upon a selected strip of the sheet, and a composite roll, to which the sheet passes as a reach under selectively varied tension. The composite roll includes a parallel roll and an inclined roll which is inclined at a pleat angle to the parallel roll and is driven by rolling contact with the parallel roll while passing through a pinch zone at the apex of the pleat angle which is 0.25.degree. to 5.degree., preferably about 1.5.degree.. The periphery of the inclined roll may vary from a right circular cylinder to a right circular cone with its peripheral surface at a bevel angle to the circular side thereof. The bevel angle is preferably one half of the pleat angle.

Abstract: A sack of a thermoplastic film comprising an open mouth region, a body region and a closed bottom region, said body region having at least one cold-stretched, circumferential band of reduced diameter therein. The method of forming such a sack comprising providing a sack of thermoplastic film; folding said bag at least once longitudinally so that the fold line is at least generally at right angles to the bag mouth opening; and at ambient temperature, applying a stretching force within at least one comparatively narrow band region across the folded bag, said stretching force being sufficient to neck-down the plastic film to a reduced diameter in relation to the original diameter of said bag.