The SPE Library contains thousands of papers, presentations, journal briefs and recorded webinars from the best minds in the Plastics Industry. Spanning almost two decades, this collection of published research and development work in polymer science and plastics technology is a wealth of knowledge and information for anyone involved in plastics.
M.Y. Serry Ahmed, P.C. Lee, C.B. Park, N. Atalla, May 2006
Foaming process is controlled for production of novel foams with various microcellular structures and morphologies. The objective is to produce lighter weight sound insulation packages with superior acoustical performance for passive noise control in automotive structures using microcellular foams. This was achieved through the control of the foaming process for production of variable microcellular structures and morphologies for the novel foams under investigation.
Global packaging regulations are changing. A review and update of toxicological and regulatory changes made in United States and EU packaging laws along with an outline of the applicable regulations relating to coloring packaging and its effects on colorant selection will be discussed.
William L. McDaniel, Phillip Sanger, Michael Clare, May 2006
This paper will describe the development of a prototype for a thermoforming mold that will be used by a promising organization in Western North Carolina. Based upon a flimsy sample, WCU faculty and students reverse-engineered the product, generated a 3D parametric model, produced a working prototype mold, and delivered it to the organization in less than three weeks. The partnership illustrates an excellent industry-education collaboration, and its effect on growing jobs in the region.
This paper presents an extrusion-based, open-cell foaming process using thermoplastic polymers such as polystyrene (PS) and polycarbonate (PC) with supercritical CO2. The effects of CO2 content, surface quenching, die geometry, and temperature on foam morphologies were investigated. Low-density, microcellular, open-cell foams were successfully produced. The large intercellular pores were observed from micrographs for both PS and PC foams at optimum processing conditions.
This work focuses on modifying the properties of waterborne acrylic coatings by incorporating nanofillers of different structure, aspect ratio, hydrophilicity and purity. The composites were characterized by SEM for morphology, WAXD for filler dispersion, water permeability and mechanical properties.
Niall Marshall, Edward P. Richard, Gideon Visser, May 2006
The addition of non-polar processing aids has been shown to widen the processing window for manufacturers of film and other extruded products. Opportunities exist to stably run lines at faster speeds with power savings. The benefits of using a non-polar processing aid in blown film are discussed.
Suzanne Xiaoqun Xu, Dan Watt, Bobbye Baylis, Paul Daly, May 2006
A combined mechanical-thermal stress analysis of the welding process and further FEA analysis of the subsequent hydraulic pressure failure behaviour was used to create a very strong joint geometry in a simple hollow vessel. The pressure test results exceeded those of vibration welds for the same part.
David Marshall, Hideki Ishikawa, Hideki Kawai, Katsuhiko Kimura, Shigemi Matsumoto, May 2006
A fully crosslinked Isobutylene-based TPV has been developed with exceptional gas and moisture barrier properties. Other property benefits are improved, compression set and service temperature, compared with thermoplastic alternatives.
A.J. Mateus, P.G. Martinho, P.J. Bartolo, May 2006
The RIM process involves simultaneous flow and exothermal curing reactions. The optimisation of these events enables to produce parts with better quality and improved properties. The integration of appropriate mathematical models simulating the thermal and flow aspects is experimentally verified.
Polypropylene (PP) is becoming the plastic of choice for many industrial and automotive applications. There are a limited number of methods to attach a 3M™ Dual Lock™ reclosable fastener to a low surface energy (LSE) polypropylene substrate. Pressure sensitive adhesive and pop-in attachment methods have some limitations. Ultrasonic bonding of Dual Lock reclosable fasteners to polypropylene substrates is a new method that overcomes many of these limitations.
N. Chan, G. Carran, D.J.Y.S. Pagé, N. Cunningham, May 2006
PVC/PMMA/clay composites were prepared by melt mixing. Heat deflection temperature and flexural properties of the PVC/PMMA/clay composites were higher than for PVC/clay or neat PVC. XRD showed that PMMA improves the dispersion of the clay in PVC. Clay particles were measured to be 1 ?m.
The knowledge of the ejection force is useful for optimizing the design of ejection system in injection moulds. The effect of mould temperature and fiber weight fraction on the ejection force required for deep tubular moldings is studied. The ejection force increases with the fiber weight fraction and decreases with the mould temperature.
Ali Shaito, Nandika Anne D’Souza, Debora Fairbrother, Jerry Sterling, May 2006
Creep and tensile properties of LLDPE and LLDPE nanocomposite balloon films are studied. Tensile and creep tests were conducted at a range of temperatures. Creep results were fit to the Burgers model. The results indicate that nanocomposites based on the use of maleated polyethylene incorporation into the base polyethylene and montmorillonite layered silicate (MLS) composite have higher mechanical properties.
The properties of PEMs with SXLPS particles dispersed and aligned in a crosslinked PDMS matrix were examined. Included in this study was the influence of SXLPS quantity and size on the water and methanol uptake, and on methanol permeability. In addition, the state of water linked with the SO3H groups was examined.
This study explores the crystallization dynamics of polypropylene-clay nanocomposites. Calorimetry and optical microscopy tools are employed to study the effect of nanoclay on quiescent crystallization kinetics. While a mini-extruder, designed to apply a shear pulse, is used with turbidity and birefringence measurements to explore the flow-induced crystallization dynamics in nanocomposite systems. Data presented indicates that clay can act as a nucleating agent in both flow and quiescent cases, and subsequently cause enhanced crystallization kinetics.
A very low cost, unglazed Thermosiphon Solar Collector constructed from polyethylene film and having an internal heat exchanger has been developed. The collector operates at relatively low temperature and low material stress, decreasing thermal degradation, material creep, and weight. Prototype systems have been built and tested, and processing equipment designed.
Joël Reignier, Richard Gendron, Michel Champagne, May 2006
This paper presents a thorough investigation of the continuous extrusion foaming of PLA using CO2 as the blowing agent. Detailed results are given for the plasticization induced as determined from on-line rheometry as well as resulting foam characteristics.
Ying Qin, Maria Rubino, Rafael Auras, Hugh Lockhart, May 2006
Sorption of benzaldehyde and moisture vapors in polypropylene resin, sheet, and containers was studied via a Rubotherm magnetic suspension microbalance. Polymer processing has an impact on polymer structure and morphology. A comparison of sorption among the three polypropylene forms demonstrated the marked impact of processing on inducing changes in the barrier properties of the polymer. The simultaneous sorption of organic compounds and moisture demonstrated the combined effect on the sorption.
We use a combinatorial method of investigation to obtain a near-universal scaling curve describing a wetting-dewetting transition line for polystyrene films of fixed thickness by introducing reduced temperature and surface energy variables dependent on molecular weight.
Utilizing a positive, dimensional approach to transport phenomena provides undergraduate plastics engineering technology students with a solid foundation upon which to build the fundamental principles of polymer processing. Students are encouraged to visualize, and sketch, on three scales: molecular, microscopic, and macroscopic. They also are encouraged to progress through three levels of learning: translation to a visual mode; solution of determinate problems; and the solution of indeterminate problems.
Kim McLoughlin Senior Research Engineer, Global Materials Science Braskem
A Resin Supplier’s Perspective on Partnerships for the Circular Economy
About the Speaker
Kim drives technology programs at Braskem to develop advanced polyolefins with improved recyclability and sustainability. As Principal Investigator on a REMADE-funded collaboration, Kim leads a diverse industry-academic team that is developing a process to recycle elastomers as secondary feedstock. Kim has a PhD in Chemical Engineering from Cornell. She is an inventor on more than 25 patents and applications for novel polyolefin technologies. Kim is on the Board of Directors of SPE’s Thermoplastic Materials & Foams Division, where she has served as Education Chair and Councilor.
A Resin Supplier’s Perspective on Partnerships for the Circular Economy
About the Speaker
Gamini has a BS and PhD from Purdue University in Materials Engineering and Sustainability. He joined Penn State as a Post Doctorate Scholar in 2020 prior to his professorship appointment. He works closely with PA plastics manufacturers to implement sustainability programs in their plants.
A Resin Supplier’s Perspective on Partnerships for the Circular Economy
About the Speaker
Tom Giovannetti holds a Degree in Mechanical Engineering from The University of Tulsa and for the last 26 years has worked for Chevron Phillips Chemical Company. Tom started his plastics career by designing various injection molded products for the chemical industry including explosion proof plugs and receptacles, panel boards and detonation arrestors for 24 inch pipelines. Tom also holds a patent for design of a polyphenylene sulfide sleeve in a nylon coolant cross-over of an air intake manifold and is a Certified Plastic Technologist through the Society of Plastic Engineers. Tom serves on the Oklahoma Section Board as Councilor, is also the past president of the local Oklahoma SPE Section, and as well serves on the SPE Injection Molding Division board.
Joseph Lawrence, Ph.D. Senior Director and Research Professor University of Toledo
A Resin Supplier’s Perspective on Partnerships for the Circular Economy
About the Speaker
Dr. Joseph Lawrence is a Research Professor and Senior Director of the Polymer Institute and the Center for Materials and Sensor Characterization at the University of Toledo. He is a Chemical Engineer by training and after working in the process industry, he has been engaged in polymers and composites research for 18+ years. In the Polymer Institute he leads research on renewably sourced polymers, plastics recycling, and additive manufacturing. He is also the lead investigator of the Polyesters and Barrier Materials Research Consortium funded by industry. Dr. Lawrence has advised 20 graduate students, mentored 8 staff scientists and several undergraduate students. He is a peer reviewer in several journals, has authored 30+ peer-reviewed publications and serves on the board of the Injection Molding Division of SPE.
Matt Hammernik Northeast Account Manager Hasco America
A Resin Supplier’s Perspective on Partnerships for the Circular Economy
About the Speaker
Matt Hammernik serves as Hasco America’s Northeast Area Account Manager covering the states Michigan, Ohio, Indiana, and Kentucky. He started with Hasco America at the beginning of March 2022. Matt started in the Injection Mold Industry roughly 10 years ago as an estimator quoting injection mold base steel, components and machining. He advanced into outside sales and has been serving molders, mold builders and mold makers for about 7 years.
84 countries and 85.6k+ stakeholders strong, SPE
unites
plastics professionals worldwide – helping them succeed and strengthening their skills
through
networking, events, training, and knowledge sharing.
No matter where you work in the plastics industry
value
chain-whether you're a scientist, engineer, technical personnel or a senior executive-nor
what your
background is, education, gender, culture or age-we are here to serve you.
Our members needs are our passion. We work hard so
that we
can ensure that everyone has the tools necessary to meet her or his personal & professional
goals.
Need help from SPE Headquarters?
SPE HQ provides a range of services to Chapters. If you are a chapter and need HQ services (i.e.,
event registration - full list of HQ services can be found here), please fill out and submit the HQ services request form found
here: www.4spe.org/HQservices.
IMPORTANT! If you are simply looking to post your
event on SPE's calendar, please click the "Submit an Event" button below. All events
submitted for inclusion in the SPE calendar are subject to approval.
Going to a SPE event?
If you are going to a SPE event and need a Visa invitation letter, please submit your request for a Visa Invitation letter.
SPE Members receive discounted rates on all event registrations. Not a member of SPE? Join today!
How to reference articles from the SPE Library:
Any article that is cited in another manuscript or other work is required to use the correct reference style. Below is an example of the reference style for SPE articles:
Brown, H. L. and Jones, D. H. 2016, May.
"Insert title of paper here in quotes,"
ANTEC 2016 - Indianapolis, Indiana, USA May 23-25, 2016. [On-line].
Society of Plastics Engineers, ISBN: 123-0-1234567-8-9, pp. 000-000.
Available: www.4spe.org.
Note: if there are more than three authors you may use the first author's name and et al. EG Brown, H. L. et al.
