Today there is a great deal of interest in the field of plastics design. Several methods can be employed to create plastic products such as injection molding, compression and transfer molding, and blow molding. This paper is concerned with blow molding which is a procedure employed to create hollow plastic containers such as those used to contain liquids and solids in the wholesale and retail markets. An important aspect of blow molding is the measurement of the wall thickness of semi-liquid plastic before the molding procedure has been initiated. Minimization of waste is rapidly becoming a critical consideration within the plastics community due to the cost of raw polymers. Unfortunately, it is also an extremely difficult task to measure the thickness considering the high temperatures and elasticity of the polymers in question. This paper presents initial research on a non-invasive approach for wall thickness measurements of semi-liquid plastics through the utilization of computerized tomography and neural networks. The work described here is based on simulations and on modeling data obtained through experimental means. This technique can be extended to other fields of research as well, such as those related to the development of glass and ceramic products.
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http://dx.doi.org/10.1142/s012906579700032x | DOI Listing |
Carbohydr Polym
March 2025
Jinshan College of Fujian Agriculture and Forestry University, Fuzhou 350002, China. Electronic address:
Yeast immobilization systems can recoup yeast losses in continuous batch fermentation and relieve substrate or product inhibition. We report the use of solution blow spinning process to efficiently prepare polyhydroxyalkanoate (PHB) /konjac glucomannan (KGM) nanofiber membranes as immobilization carriers for Saccharomyces cerevisiae. The prepared PHB/KGM nanofiber membranes had fiber diameters similar to the scale of yeast cells.
View Article and Find Full Text PDFCompr Rev Food Sci Food Saf
January 2025
College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi'an, China.
Although traditional petroleum-based packaging materials pose environmental problems, biodegradable packaging materials have attracted extensive attention from research and industry for their environmentally friendly properties. Bio-based films, as an alternative to petroleum-based packaging films, demonstrate their significant advantages in terms of environmental friendliness and resource sustainability. This paper provides an insight into the development of biomass food packaging films such as cellulose, starch, chitosan, and gelatine, including their properties, methods of preparation (e.
View Article and Find Full Text PDFJ Sep Sci
January 2025
R & D Laboratory, TASNEE Technology and Innovation Centre, Al-Jubail Industrial City, Saudi Arabia.
In this study, a commercially available polypropylene homopolymer (H-PP) was blended with blow molding polyethylene (PE) grade via melt mixing using a compounding machine. The resulting blends were subjected to high-temperature size exclusion chromatography (SEC) analysis, coupled with infrared-5 (IR-5), viscometer (VISCO), and multi-angle laser light scattering (MALS) detectors. The molecular weight (MW) and MW distributions were investigated using SEC, and the exact blend compositions were evaluated using C nuclear magnetic resonance.
View Article and Find Full Text PDFMaterials (Basel)
December 2024
Faculty of Physics and Astronomy, University of Wroclaw, 9 Maxa Born Square, 50-204 Wroclaw, Poland.
This research explores how varying proportions of virgin polyethylene terephthalate (vPET) and recycled polyethylene terephthalate (rPET) in vPET-rPET blends, combined with preform thermal conditions during the stretch blow molding (SBM) process, influence PET bottles' microscopic characteristics. Key metrics such as viscosity, density, crystallinity, amorphous phase relaxation, and microcavitation were assessed using response surface methodology (RSM). Statistical analysis, including Analysis of variance (ANOVA) and its power, supported the interpretation of results.
View Article and Find Full Text PDFJ Vet Med Sci
January 2025
Laboratory of Food and Environmental Hygiene, Joint Department of Veterinary Medicine, Gifu University, Gifu, Japan.
Bronchoalveolar lavage fluid (BALF) can be used to identify pathogens in the lower respiratory tract. To assess the utility of cetacean BALF in pathogen identification, we obtained 36 sets of fungal isolates from paired BALF and blow samples collected from six managed beluga whales (Delphinapterus leucas). In 13 sets, Candida tropicalis was isolated from BALF, whereas Candida spp.
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