Effect of fabric architecture, compaction and permeability on through thickness thermoplastic melt impregnation

Application of a Natural Antioxidant from Grape Pomace Extract in the Development of Bioactive Jute Fibers for Food Packaging

“…It has been used for different applications such as packaging paper, decorations, reinforcement for polymers, construction, furniture, automotive applications [ 21 , 22 ]. Although some research studies on fabrics, such as cotton, with natural extracts for biomedical application have been reported [ 23 , 24 , 25 , 26 ], as far as we know, there is scarce research on the use of jute in the food industry. The literature found on this subject is focused on the use of natural fibers as a reinforcing filler in composites [ 27 , 28 ], because their improvement of strength, stiffness and better moisture absorption [ 29 ].…”

A life cycle analysis of novel lightweight composite processes: Reducing the environmental footprint of automotive structures

“…TP-cRTM is a novel production process combining C-RTM with low-viscosity thermoplastics and conventional injection molding machines as described in (Werlen et al, 2021) and schematically represented in Fig. 2 (Studer et al, 2019). It allows near net-shape part production in one step.…”

“…Researchers have been developing new production methods in an attempt to improve the production of thermoplastics composites, which translates into reduced costs or cycle time for example. Three promising methods can be cited among the propositions: thermoplastic resin compression RTM (TP-cRTM) with injection molding as investigated by (Studer et al, 2019), melt thermoplastic RTM (mTP-RTM) with flow-enhancing spacers (Gomez et al, 2021) and stamp forming hybrid bicomponent fibers (st-HBF) proposed by (Aegerter et al, 2018).…”

Analysis of Impregnation Mechanism of Weft-Knitted Commingled Yarn Composites by Staged Consolidation and Laboratory X-Ray Computed Tomography

“…Nevertheless, one of the main challenges of thermoplastic matrix composites is the relatively high viscosity of thermoplastic melts compared with thermosets (Alagirusamy and Ogale, 2004;Risicato et al, 2014), which makes impregnation more difficult. Among the potential solutions to reduce the manufacturing cycle time of structural thermoplastic composites while keeping the high quality of a final part are the reduction of the flow length by means of through-thickness impregnation (Kim and Park, 2017), the use of low viscosity engineering thermoplastics (Studer et al, 2019) or the thermoconsolidation of fiber-matrix premixed semi-products. The existent technologies using pre-mixed semi-products include the stacking of polymer film between fiber plies, the powder impregnation of bundles or the commingling polymer and reinforcing fibers inside the yarns (Svensson et al, 1998).…”

“…The local and online consolidation of thermoplastic tapes during an automated placement has become possible by using a robotic deposition head with laser heating (Schaefer et al, 2017) or ultrasonic energy sources (Lionetto et al, 2015). Over-molding processes can add some technological functionalities to thermoplastic prepreg sheets (Studer et al, 2019). Hot-press processes are also used for the manufacturing of long fiber reinforced thermoplastic composites (Wang et al, 2011).…”