WebThe film samples were analyzed and the “gels”/particles were determined to be “un-melts”; non-melted and incompletely mixed resin. The periodic variation suggested that the … WebMay 8, 2024 · Blown films of different types of polyethylenes, such as branched low-density polyethylene (LDPE) and linear high-density polyethylene (HDPE), are well known to tear easily along particular...
Gels in PE film - YouTube
WebOCS blown film lines are modular and customizable. They make the highest quality films for optical defect (e.g. gel) analysis, and accommodate the use of other measurements, such as haze, thickness gaging, gloss, and others. WebJun 2, 2024 · Polymer Extrusion problems & Defects 1. Extrusion Problems & Defects 2. The profile of extruded material grows in size, reflecting its tendency to return to its previously larger cross section in the extruder barrel immediately before being squeezed through the smaller die opening. Shape memory: Extruded polymer remembers its … cromwell dental
Raw Material Inspection - OCS Optical Control Systems GmbH
WebThe integrated Film Surface Analyser (FSA100V2/FSA200V) detects optical defects such as gels, black specks and fish eyes and measures the physical properties of the extruded … Web11.2.2.2 Blown Film. The blown-film process involves extruding a relatively thick tube, which is then expanded or blown by internal air pressure to produce a relatively thin film. The tube can be collapsed to form double-layer layflat film or can be slit to make one or two single-layer film webs. WebJan 1, 1980 · The particles deform the film in their immediate vicinity, so that the gels (semi-solid particle plus deformation) become clearly visible. Their size may vary between 100 ;urn and 1 cm. Formerly, the gel content of ldpe was measured after off-line processing of the granulate into blown film. cromwell dentist nz