Rheology and sheet extrusion of Novatein thermoplastic protein/polybutylene adipate‐co‐terephthalate blends

2019 ◽  
Vol 136 (38) ◽  
pp. 47977
Author(s):  
Casparus J.R. Verbeek ◽  
Matthew J. Smith ◽  
Wade C. Cozens
Keyword(s):  
Thermoplastic Protein ◽  
Sheet Extrusion

Sheet Extrusion

2005 ◽  
pp. 189-289
Author(s):  
Dana R. Hanson
Keyword(s):  
Sheet Extrusion

Plastic packaging materials of laminated composites made of polymer cover sheets and a nonwoven interlayer

2018 ◽  
Vol 22 (7) ◽  
pp. 2287-2301
Author(s):  
Mei-Chen Lin ◽  
Jia-Horng Lin ◽  
Jan-Yi Lin ◽  
Ting An Lin ◽  
Ching-Wen Lou
Keyword(s):  
Mechanical Properties ◽  
Laminated Composites ◽  
Thermoplastic Polyurethane ◽  
Soft Materials ◽  
Packaging Materials ◽  
Light Weight ◽  
Plastic Packaging ◽  
Crystal Stability ◽  
High Toughness ◽  
Sheet Extrusion

This study aims to improve the mechanical properties, stabilized structures, and light weight plastic packaging materials to realize diverse applications. A sheet extrusion machine is used to fabricate sandwich-structured composites, which are composed of two polymer cover sheets and a nonwoven interlayer. The samples are prepared in two batches with different cover sheets: thermoplastic polyurethane and polypropylene. Moreover, low-melting-point polyester (LMPET) fibers and Kevlar fibers are fabricated into a LMPET/Kevlar nonwoven interlayer. The laminated composites are evaluated in terms of morphologies, mechanical properties, combustion rates, and thermal behavior. Kevlar fibers are flame resistant and mechanically strong. LMPET fibers promote the interfacial bonding between layers. Thus, the laminated composites are good candidates as packaging materials, and they can be made with rigid or soft materials, depending on specified requirements. Rigid materials can provide higher strengths, and the distribution of fibers thus helps the PP-based laminated composites to obtain higher crystal stability. Moreover, using TPU with flexibility contributes to high extensibility, which grants the laminated composites with high toughness, light weight, and low restriction against the morphology. Such manufacturing is also efficient and economical, thereby satisfying the requirements of plastic packaging materials.

3D FEM Study of the Flow Uniformity of Flat Polypropylene Film/Sheet Extrusion Dies

2020 ◽  
Vol 841 ◽  
pp. 375-380
Author(s):  
Dastan Igali ◽  
Asma Perveen ◽  
Dong Ming Wei ◽  
Di Chuan Zhang ◽  
Almagul Mentbayeva
Keyword(s):  
Polymer Melt ◽  
Die Design ◽  
Manufacturing Companies ◽  
Flow Uniformity ◽  
3D Fem ◽  
Extrusion Dies ◽  
Polypropylene Sheet ◽  
Flat Film ◽  
Extrusion Die Design ◽  
Sheet Extrusion

Coat-hanger dies are widely used in the extrusion of polymer sheets and films. However, when designing the flat film/sheet extrusion dies manufacturing companies still facing difficulties in achieving the flow uniformity of the polymer melt. This affects the product quality and tool life. This study examines the existing extrusion die design which is used in in the industry in Kazakhstan for polypropylene sheet production and proposes better geometry of a die. These die geometries will be tested for flow uniformity in terms of velocity and pressure at the outlet.

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