摘要:
An extruded PET parison includes a first extruded polymer that may comprise PET, and a second extruded polymer that may comprise PET. In embodiments, the first extruded polymer and the second extruded polymer are co-extruded, and the first extruded polymer has an intrinsic viscosity that is higher that the intrinsic viscosity of the second extruded polymer. In other embodiments, a blend of a first polymer having a higher IV and a second polymer having a lower IV are blended. Additionally, for some embodiments involving regrind materials, an elutriation process may be used to remove particulates or fines.
摘要:
A multi-layer sheet (300) for forming an expanded foam container, the multi-layer sheet comprising a first layer (302) of an expanded foam material comprising a first polyolefin-based material comprising at least one polypropylene-based polymer and a second layer (304) of an unexpanded material comprising a second polyolefin-based material comprising at least one polypropylene-based polymer that is co-extruded, extrusion coated, or laminated on a first side of the first layer.
摘要:
An extruded PET parison includes a first extruded polymer that may comprise PET, and a second extruded polymer that may comprise PET. In embodiments, the first extruded polymer and the second extruded polymer are co-extruded, and the first extruded polymer has an intrinsic viscosity that is higher that the intrinsic viscosity of the second extruded polymer. In other embodiments, a blend of a first polymer having a higher IV and a second polymer having a lower IV are blended. Additionally, for some embodiments involving regrind materials, an elutriation process may be used to remove particulates or fines.
摘要:
Provided are a multilayer coating apparatus and a multilayer coating method in which an uneven flow can be reduced when two types of resins having different softening points are caused to join together and a wire member is coated therewith. A coating apparatus (10) includes: a first extruder (12) and a second extruder (14); a crosshead (16) for coating a wire member with a resin layer with a double-layer structure; a first nozzle (18) which connects the first extruder (12) and the crosshead (16) to each other; a second nozzle 20 which connects the second extruder (14) and the crosshead (16) to each other; a control unit 22 which controls supply amounts of the first extruder (12) and the second extruder (14); and a heater (24) which heats the second nozzle (20). The second nozzle (20) is longer than the first nozzle (18).
摘要:
A tubular, multilayer film comprises a central barrier layer and a pair of adhesive layers on opposite sides of the central barrier layer. The adhesive layers completely cover the central barrier layer. Opposing edges of the central barrier layer overlap longitudinally along the tubular, multilayer film. The total thickness of the central barrier layers in the overlapping portion is substantially the same as the thickness of the central barrier layer in the non-overlapping portion. The tubular, multilayer film also includes inner and outer surface layers. The inner surface layer extends completely around the interior of the tubular, multilayer film, and the outer surface layer extends completely around the exterior of the tubular, multilayer film.
摘要:
Die Erfindung betrifft ein Verfahren zur Herstellung blasgeformter Hohlkörper aus thermoplastischen Kunststoffen sowie eine Extrusionseinrichtung zur Durchführung des Verfahrens. Das Verfahren umfasst das Ausstoßen eines schlauchförmigen Vorformlings aus einem Extrusionskopf (1) mit verstellbarer Ringspaltdüse (4), wobei einer ersten Schicht thermoplastischen Materials in Extrusionsrichtung wenigstens abschnitts- bzw. zeitweise eine zweit Schicht thermoplastischen Materials konzentrisch aufgegeben wird, eine Einspeisung des zweiten Schmelzstrangs und eine Vereinigung der Schmelzestränge im Düsenbereich des Extrusionskopfs erfolgen, wobei während der Extrusion eine radiale Wanddickenvariation des mehrschichtigen Vorformlings mittels Düsenspaltverstellung in einer sich quer zur Extrusionsrichtung streckenden Ebene erfolgt.
摘要:
This invention concerns a drum-like container (1) made of a discontinuously extruded hose-like preform of thermoplastic in a blow molding process. This drum-like container has a wall consisting of an inner layer, an outer layer and at least one intermediate layer. To effect that the wall consist of at least three layers and that it be possible to monitor the fill level of the fill material, the wall has a visual indicator strip (2) out of translucent plastic running in the axial direction.
摘要:
Die Erfindung betrifft eine Düsenanordnung für die Koextrusion eines Produktes mit wenigstens zwei Schichten, wobei ein an die Extruder angrenzender Verteilerabschnitt 14 vorgesehen ist, über den eine Extrusionsmassen aus den Extrudern austragbar sind, und wobei ein Verteilerabschnitt 12 zur Extrusion der Extrusionsmasse an den Verteilerabschnitt anschließt, wobei erfindungsgemäß zwischen dem Verteilerabschnitt und dem Düsenabschnitt eine Montage- und Anschlussbasis 16 vorgesehen ist.
摘要:
The invention relates to an extrusion apparatus for preparing a cylindrical plastic product or for coating the product at least with one layer of plastic, the extrusion apparatus comprising at least one conical stator (3, 4, 5), at least one conical rotor (1, 2), and at least one conical supply opening (6, 7, 8, 9) between them for pressing the plastic material (M) to be extruded into an extrusion conduit (10). At the end of the rotor (1, 2) there are means (23; 12, 13; 24; 38, 39) for defibering and/or orienting the plastic material (M). The invention also relates to a method for defibering and/or orienting plastic material during the preparation or coating of a cylindrical plastic product.
摘要:
A multilayered laminate consisting of at least two layers comprising a layer of an oriented ultrahigh-molecular polyolefin and a thermoplastic resin layer. The multilayered laminate is excellent in wearing resistance, tensile strength, impact resistance, heat sealability, and evenness of film thickness and also in the efficiency of processing. A process and apparatus for producing the multilayered laminate are also provided.