Abstract: Films of linear ethylene polymers, particularly copolymers of ethylene and alpha-olefins of 4 to 10 carbon atoms (LLDPE), containing up to about 15 weight percent of a 1:3 to 3:1 ratio of polystyrene or poly(para-methylstyrene), and impact polymer, e.g., impact polystyrene, exhibit excellent film properties and improved blocking.

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: The present invention relates to a film comprising a low density linear ethylene copolymer of ethylene and a higher olefin and up to about 10 percent by weight of the total composition of an acrylonitrile homopolymer or copolymer.

Abstract: Plastic bags are made from linear ethylene homopolymer or linear low density copolymers (LLDPE) blended with up to about 10 weight percent of an aromatic polymer, e.g., polystyrene or poly(para-methylstyrene), to improve the ease of opening the bags by reducing the blocking tendency of the film. Although ease of opening is improved the aromatic polymer does not adversely affect the other physical properties of the bag, such as MD tear strength and stiffness, but improves them.

Abstract: There is disclosed a modified method of preparing a blown polyethylene film made from a blend of major proportion of a polyethylene resin, e.g., LLDPE, a minor proportion of a second polymeric resin, e.g., polystyrene, and at least one additive, e.g., a colorant. The additive or additives are mixed with the second polymeric resin and the resulting mixture is then blended with the polyethylene resin, thereby reducing the number of process steps. Also disclosed is a method of monitoring and/or controlling the second polymeric resin content in the film made with known proportions of a colorant and the second polymeric resin by measuring the light transmission of the film.

Abstract: Disposable outer rain garments which may be dispensed from a continuous web of a tubular, lay-flat plastic film material. The web of lightweight plastic lay-flat tubular material is imparted with suitable rear lines preferably formed from parallel, transversely perforations spaced at suitable and regular intervals along the length extending of the web so as to define individual garments. As a garment is needed by a wearer, the web is drawn off from a supply or feed roll and torn off at the next perforation from the dispensed end of the web. Adjacent to the perforation defining the top of the garment, but ahead of the perforation, there is formed a sealed edge with a perforated aperture for the through-passage of the head of a wearer. At the opposite edges of the web, in effect, at both sides of the garment, perforated apertures are formed for the through-passage of arms.

Abstract: Films of linear ethylene polymers, particularly copolymers of ethylene and alpha-olefins of 4 to 10 carbon atoms (LLDPE), containing up to about 15 weight percent of an impact polymer, e.g. impact polystyrene, exhibit excellent film properties and improved blocking.

Abstract: Linear low density copolymers (LLDPE) are blended with up to about 10 weight percent of an aromatic polymer, e.g., polystyrene or poly(para-methylstyrene), to give films having improved MD tear strength or equivalent MD tear strength and higher stiffness compared to the LLDPE alone. Also, extruder torque is lower and bubble stability is greater in blown film extrusion with the blends as well as in blends in which medium or high density polyethylene is used instead of the LLDPE.

Abstract: Linear low density copolymers (LLDPE) are blended with up to about 10 weight percent of an aromatic polymer, e.g., polystyrene or poly(para-methylstyrene), to give films having improved MD tear strength or equivalent MD tear strength and higher stiffness compared to the LLDPE alone. Also, extruder torque is lower and bubble stability is greater in blown film extrusion with the blends as well as in blends in which medium or high density polyethylene is used instead of the LLDPE.

Abstract: A cling/stretch wrap film having desirable processing and end use characteristics is made from a composition of 90-97.5 wt. % an ethylene polymer having a melt flow value between 0.2 to 6.0 such as EVA copolymer (4-5 wt. % VA content) and 2.5-10 wt. % low density amorphous copolymer of ethylene and propylene (about 3-5 wt. % ethylene).