Results 261 to 270 of about 9,253 (301)

Investigation into the Cooling Characteristics of Blown Film Extrusion Lines

Journal of Reinforced Plastics and Composites, 1999
To analyze and to optimize the cooling conditions at blown film extrusion lines, the cooling air stream has been determined by using a hot wire anemometer. The velocity and temperature profiles of the air stream and the air pressure along the bubble have been measured.
Jochen Hauck, Walter Michaeli
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High performance extrusion blown starch/polyvinyl alcohol/clay nanocomposite films

Food Hydrocolloids, 2018
Abstract Starch/polyvinyl alcohol (PVA)/clay nanocomposite films with high mechanical and barrier properties were prepared by extrusion blowing. Based on the starch/clay matrix, the effects of PVA content on the starch/PVA/clay nanocomposite films were investigated. Appropriate preparation conditions were determined by the rheological behavior of the
Wentao Wang, Hui Zhang, Rui Jia, Yangyong Dai, Haizhou Dong, Hanxue Hou, Qingbin Guo   +6 more
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Biodegradable PLA-PHA Polymer Blown Extrusion Processing Properties

Korea Industrial Technology Convergence Society
As delivery culture grows rapidly, global regulations on disposable products and packaging materials are being strengthened. The use of various chemical additives and polyvinyl chloride (PVC) plasticizers in the packaging material manufacturing process has been confirmed to cause water pollution and microplastics.
Dae-Yong Jeong, Ji-Yeon Hahm
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Studies on blown film extrusion. I. Experimental determination of elongational viscosity

Journal of Applied Polymer Science, 1975
AbstractBlown‐film extrusion experiments were carried out to investigate the elongational flow behavior of viscoelastic polymer melts at different melt temperatures. Materials chosen for study were high‐density polyethylene, lowdensity polyethylene, and polypropylene.
Chang Dae Han, Jong Yoo Park
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Real-time Raman spectroscopy during LDPE/PP bilayer blown-film extrusion

Plastics, Rubber and Composites, 2005
AbstractThe present study reports on a technique for real-time Raman spectroscopic measurement of crystallinity of the individual components of a bicomponent film (LDPE/PP) during blown-film extrusion. The 1296–1305 cm−1 band, observed predominantly for PE, was slightly masked by the contribution from the PP layer.
G. Gururajan, A. A. Ogale
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Electron beam crosslinking of extrusion-blown LDPE films: 1. Mechanical properties

European Polymer Journal, 1999
Polyethylene films obtained by the extrusion-blowing process present anisotropic physical characteristics. This feature provides them with several interesting mechanical properties for numerous industrial applications. In this report, the effects of the electron beam treatment on such materials are presented.
O Guiot, L Tighzert, X Coqueret
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Blown film extrusion of poly(lactic acid) without melt strength enhancers

Journal of Applied Polymer Science, 2017
ABSTRACTProcessing strategies were developed to manufacture poly(lactic acid) (PLA) blown films without melt strength enhancers (MSEs). The effects of processing temperature on PLA's melt properties (shear and elongational viscosities), PLA grades, and other processing conditions [ratio of take‐up roller to extruder's rotational screw speeds or ...
Sonal S. Karkhanis, Nicole M. Stark, Ronald C. Sabo, Laurent M. Matuana   +3 more
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A thin-shell two-phase microstructural model for blown film extrusion

Journal of Rheology, 2010
A two-phase microstructural constitutive relation is combined with the thin-shell model for the simulation of blown film extrusion. This combination includes equations for momentum conservation, flow-enhanced crystallization, viscoelasticity, and bubble-tube cooling.
J. C. Pirkle, Richard D. Braatz
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Fabrication of PBAT/polyethylene blends mulching film via blown film extrusion process

Korea-Australia Rheology Journal, 2020
To extend the period of decomposition and property degradation of polybutylene adipate terephthalate (PBAT) mulching film for long-term use, PBAT was compounded with polyethylene mixture (LDPE: LLDPE = 15:85), calcium carbonate, and illite. PBAT mulching films were prepared using a blown film extrusion process with 80 mm diameter blowing die.
Jung Gu Han, Seung Joon Park
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Experimental Research on the Blown Film Extrusion Process of Polyethylene

Journal of Plastic Film & Sheeting, 2001
Experimental studies of the blown film extrusion process presented in this paper aim at examining the influence of selected properties of constructional elements of intensive shearing and mixing on the characteristic of this process. The analysis concerned especially the influence of the thickness of the research gap between the inner surface of ...
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