摘要:
[Problem] It is intended to provide a formed article for food which has excellent antistatic properties and water repellency without impairing its original external appearance and mechanical properties thereof even in a deep-drawn part having a high drawing ratio at forming or even through high temperature forming.[Solution] A multi-layer sheet is prepared having a multi-layer configuration with two or more types of two or more layers, including a main layer which contains a thermoplastic resin, talc and white pigment, and a skin layer of an antistatic resin composition which contains at least one type of thermoplastic resin and an antistatic agent on an opposite side. By thermoforming the sheet including the resin composition, a formed article which has excellent antistatic properties and water repellency effective for preventing contamination and adhesion of soup powder can be obtained. The polymer antistatic agent desirably contains a fatty acid ester sulfonate salt as a main component, has a surface resistivity of 1013Ω/□ or less, and has a water droplet contact angle of 90° or more. The multi-layer sheet is desirably prepared by co-extrusion.
摘要:
The present disclosure is related to a die suitable for extrusion of thermoplastic vulcanizate, in particular for co-extrusion of multiple materials comprising a thermoplastic vulcanizate. The die comprises a pool die plate, an orifice die plate, and a profile die plate. By utilizing the die according to the present disclosure in extrusion, the flow of extrudate can be well controlled and balanced due to the design of flow pool and through orifice, thereby an extruded article achieves good shape performance, for example, good surface smoothness, and an undesired effect like edge tear, warpage, die moustache, silver line in the extrusion can be avoided.
摘要:
An extruded air cooled blown film having a) a total thickness of 5 to 500 μm, b) a mono-layer structure or 2 to 9 coextruded layers, c) at least one layer L containing a polymer selected from the group consisting of polypropylene homopolymers, polypropylene random copolymers, hetero-phasic polypropylene block copolymers, or any mixtures thereof, said polymer having a melt flow rate, according to ASTM D-1238, of 0.1 to 10 dg/min at 230° C. and 2.16 kg, said layer L further containing 0.001 to 2%, relative to the weight of the polymer, of a particular nucleating agent, and optionally d) a Modulus according to EN ISO 527 enhanced by at least 10% versus a reference film without the nucleating agent.
摘要翻译:一种挤出空气冷却的吹塑薄膜,具有a)总厚度为5至500μm,b)单层结构或2至9个共挤出层,c)至少一层含有选自聚丙烯均聚物 ,聚丙烯无规共聚物,异相聚丙烯嵌段共聚物或其任何混合物,根据ASTM D-1238,所述聚合物在230℃和2.16kg下的熔体流动速率为0.1-10dg / min,所述层 L还相对于聚合物的重量含有0.001至2%的特定成核剂,以及任选地d)根据EN ISO 527的模量相对于不含成核剂的参考膜增强至少10%。
摘要:
Disclosed herein are thermally conductive blended polycarbonate compositions with improved thermal conductivity and mechanical performance properties. The resulting compositions, comprising one or more polycarbonate polymers and one or more thermally conductive fillers, can be used in the manufacture of articles requiring thermally conductive materials with improved mechanical properties such as electronic devices. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.
摘要:
A polypropylene composition characterized by improved additive retention can include at least 70 wt. % of a component (A) that is a random copolymer of propylene and ethylene produced with a metallocene-based polymerization catalyst. The component (A) can have a molecular weight distribution of at most 4.0. The polypropylene composition can include from 0.001 to 2.0 wt. % of a component (B) that is an additive that migrates to a surface of the polypropylene composition. The polypropylene composition can include a component (C) that is a thermoplastic polymer different from component (A), and is not a metallocene polypropylene homopolymer. The polypropylene composition can have a gloss at 20° of at least 75. Articles can be produced from the polypropylene composition, including articles that require specific surface properties over an extended period of time.
摘要:
A method is disclosed for the manufacture of a powdered polyimide extrudate for use as a purge media. The method includes feeding a polyimide film material into an extruder having a first zone that provides heating and a subsequent second zone that provides endothermic shearing. In one embodiment, the resulting purge media comprises a sheared polyimide powder having an average particle size in a range of about 5 to 100 microns (or any sub-range thereof). The purge media can comprises up to 35 weight percent other additives.
摘要:
The present invention relates to screw elements for multiscrew extruders with pairs of co-rotating and fully wiping screws, to the use of these screw elements in multiscrew extruders and to a method of generating screw elements according to the invention.
摘要:
A system for making sheets, films, and objects including a reactor-dryer for reacting at least one monomer to produce a polymer melt; a flash melter in communication with the reactor-dryer for heating the polymer melt received from the reactor-dryer; a flash tank in communication with the flash melter for removing volatile compounds from the polymer melt; and a control loop in communication with the flash tank for controlling the pressure of the polymer melt from the flash tank to a die forming unit. Methods of making sheets, films, and objects is further included.
摘要:
The present invention relates to a connecting device (1) for fluid mediums, in particular hydraulic fluid mediums, consisting of a plastic connecting element (2) having at least one connecting section (4) with a receiving opening (6) for a tubular conduit end (8) to be laser-welded. The connecting element (2) consists of at least two components (K1, K2) with different material properties, a first component (K1) surrounding the receiving opening (6) in the area of the connecting section (4) and consisting of a material that is substantially transparent to laser beams.
摘要:
A disk structure is disposed in an optical tweezers device including a light source for producing incident laser light. The disk structure includes a first substrate, a second substrate and a reflective layer. The second substrate is disposed with respect to the first substrate. One of the first substrate and the second substrate has at least one flow path. The reflective layer, which is adhered to the second substrate, is disposed between the first substrate and the second substrate. After the incident laser light passes through the first substrate and then reaches the reflective layer, the incident laser light is reflected back as reflective laser light by the reflective layer to form reflective laser light. A tweezers light field is formed in the flow path by both the reflective laser light and the incident laser light.