Abstract:
In one embodiment, a polymeric sheet, comprising: a foamed layer comprising a polymeric material, wherein the polymeric material has a Tg of greater than or equal to 100° C.; and wherein the sheet has a weight reduction of 10% to 60%, as compared to a solid sheet of the same geometry and size formed from the same polymeric material. The sheet, at the thickness of 1.0 mm, has a smoke density of less than or equal to 200 particles after four minutes of burning according to ASTM E662-06. The sheet is thermoformable.
Abstract:
A surgical article formed from a fiber-reinforced thermoplastic composition includes a polypropylene polymer component and a fiber reinforcement component. The surgical article is formed using a vacuum forming process. The surgical article may include a surgical tray including a bottom surface having side walls disposed around a periphery thereof and extending from the bottom surface. The vacuum forming may include a heater profile configured to heat a surface area at a perimeter of a plaque such that a plaque thinning at the bottom surface is minimized and radius stretch through the side walls is minimized, thereby retaining maximum wall thickness.
Abstract:
The invention is directed to a mass transit vehicle component, to a method for preparing a mass transit vehicle component with improved smoke density and/or heat release performance, to the use of a component in mass transit vehicles, and to a use of a pellet or composition. The mass transit vehicle component of the invention is prepared from i) pellets of a flame retardant glass fibre reinforced polypropylene composition; ii) a composition comprising: a) pellets of a fibre reinforced polypropylene composition; and b) a flame retardant polypropylene dilution composition; or iii) a composition comprising: a) pellets of a flame retardant fibre reinforced polypropylene composition, and b) a flame retardant polypropylene dilution composition.
Abstract:
A thermoplastic composition comprising, based on the total weight of the thermoplastic composition: 40 to 80 wt. % of an aromatic polycarbonate; 10 to 40 wt. % of a reinforcing mineral filler; 0.05 to 1.5 wt. % of a fluorinated polymer; 10 to 35 wt. % of a polyetherimide; 0 to 1.5 wt. % of sodium trichlorobenzene sulphonate; optionally, 1 to 8 wt. % of an organic phosphorus-containing flame retardant; optionally, 0.05 to 20 wt. % of an impact modifier; and optionally, 0.05 to 5 wt. % of an additive composition comprising an antioxidant, a mold release agent, and a stabilizer.
Abstract:
A window frame insert for an existing window frame can comprise: a window pane comprising a thermoplastic polymer, wherein a length of the window pane is divided into a first portion and a second portion by a living hinge mechanism formed into the window pane that extends across a width of the window pane from one edge to an opposite edge such that the first portion can bend at the living hinge mechanism toward the second portion, and wherein an outer edge of the window pane removably attaches to the existing window frame, and preferably wherein the first portion and the second portion have a haze value of less than or equal to 5% as determined in accordance with ASTM D1003-13, preferably less than or equal to 2%.
Abstract:
A window frame insert for an existing window frame can comprise: a window pane comprising a thermoplastic polymer, wherein a length of the window pane is divided into a first portion and a second portion by a living hinge mechanism formed into the window pane that extends across a width of the window pane from one edge to an opposite edge such that the first portion can bend at the living hinge mechanism toward the second portion, and wherein an outer edge of the window pane removably attaches to the existing window frame, and preferably wherein the first portion and the second portion have a haze value of less than or equal to 5% as determined in accordance with ASTM D1003-13, preferably less than or equal to 2%.
Abstract:
A fiber-reinforced thermoplastic composition includes a polypropylene polymer component including a low flow grade polypropylene and a high flow grade polypropylene, and a fiber reinforcement component. The fiber-reinforced thermoplastic composition is capable of being vacuum formed. In another aspect a thermoplastic composition includes a homopolymer component including polypropylene, a co-polymer component, an impact modifier, and one or more of a flame retardant component and a fiber reinforcement component. The thermoplastic composition is capable of being vacuum formed. The fiber-reinforced thermoplastic composition may be formed into an article such as an enclosure for an electrical component, and it may be chemically resistant to a medical grade cleaner.
Abstract:
A thermoplastic composition comprising, based on the total weight of the thermoplastic composition: 40 to 80 wt. % of an aromatic polycarbonate; 10 to 40 wt. % of a reinforcing mineral filler; 0.05 to 1.5 wt. % of a fluorinated polymer; 10 to 35 wt. % of a polyetherimide; 0 to 1.5 wt. % of sodium trichlorobenzene sulphonate; optionally, 1 to 8 wt. % of an organic phosphorus-containing flame retardant; optionally, 0.05 to 20 wt. % of an impact modifier; and optionally, 0.05 to 5 wt. % of an additive composition comprising an antioxidant, a mold release agent, and a stabilizer.
Abstract:
In an embodiment, a method for making a thermoplastic composition, comprising: melt polymerizing a polycarbonate, extruding and melt filtering the polycarbonate to form a melt filtered polycarbonate; forming the thermoplastic composition comprising the melt filtered polycarbonate, 0.03 to 0.05 wt % of a triacylglyceride release agent; and 0.10 to 0.14 wt % of a UV stabilizer; wherein the weight percentages are based on the total weight of the composition; and extruding the thermoplastic composition.
Abstract:
A multiwall sheet, comprising: walls extending along a z-axis and extending along an x-axis, wherein the x-axis is orthogonal to the z-axis, wherein the walls comprise plastic, and wherein the walls comprise an upper wall (2), and a lower wall (4), wherein the lower wall (4) is spaced apart from the upper wall (2) along a y-axis, and wherein the y-axis is orthogonal to the z-axis and the x-axis; ribs extending along the z-axis and extending along the y-axis between the upper wall (2) and the lower wall (4), wherein the ribs comprise plastic, and wherein the ribs comprise a first rib (6), and a second rib (8), wherein the second rib (8) is spaced apart from the first rib (6) along the x-axis, and wherein the upper wall (2), the lower wall (4), the first rib (6), and the second rib (8) define a cavity (10) having a width Xcavity and a height Ycavity; and an acoustic resonator (100) in the cavity (10), wherein the acoustic resonator (100) extends along the z-axis, comprises plastic, and comprises a first portion (110) extending in a negative y-axis direction from the upper wall (2) into the cavity (10), a second portion (120) extending in a positive x-axis direction from the first portion (110), and a third portion (130) extending in a positive y-axis direction from the second portion (120).