Please visit: DuPont Packaging & Industrial Polymers
P26-2362\n4417 Lancaster Pike
Wilmington, DE 19805 US
Line of fluorochemical blowing agents includes Formacel Z-2 (HFC-152a), FDA approved for use in PS food service and packaging foams; Formacel S (HCFC-22) used in closed-cell polyurethane and polyisocyanurate foams; and Formacel Z-4 (HFC-134a) for polyurethane systems and appliance foams, and in PS insulating board.
Company's toughening technologies involve ethylene terpolymers, ionomers, and grafted polyolefins.
Ethylene terpolymers provide impact resistance over a broad temperature range, particularly at low temperatures, for various thermoplastics. In thermoplastics, ethylene terpolymers improve impact resistance of PVC, ABS, SAN, SMA, and PC. In PVC they offer improved weatherability and easier processing resulting from a reduction in melt viscosity. Weatherability is also improved in ABS.
Surlyn ionomer resins provide low-temperature impact properties in nylon 6 and nylon 66. In TPOs, ionomers enhance abrasion resistance and paintability.
In reinforced PP and PE compounds, Fusabond anhydride-grafted polyolefin modifiers improve toughness by increasing adhesion between reinforcements and the resin matrix. Fusabond N anhydride-grafted EP rubbers provide superior toughening in 6 and 66 nylon.
Elvaloy resin modifiers for PVC include grades suitable for impact modification. Products have an extremely high molecular weight (250,000), which makes PVC compounds more durable. Reportedly, they have near zero extraction and essentially zero volatility, migration, and exudation, and provide heat, oil and uv resistance. Have been used commercially for calendered, extruded and injection molded products. Applications include office chair mats, pond liners, single-ply roofing, automotive interior applications, upholstery, wire and cable insulation, floor tile, hose and tubing, and footwear. Available as free-flowing pellets and in powders.
The potential for new or unusual materials to broaden the application potential of standard plastics processes was explored in a number of papers at April’s SPE ANTEC conference in Orlando, Fla.
WEB EXCLUSIVE: The kaleidoscopic visual appeal of Surlyn ionomer from DuPont Packaging & Industrial Polymers, Wilmington, Del., was exemplified last month at Luxe Pack 2012 in Monaco by Italian cosmetics packaging designer Lucchese Design.
WEB EXCLUSIVE: DuPont Packaging, Wilmington, Del., has introduce the second in a series of online predictive modeling tools that promises to simplify tie-layer material selection, a critical step in multilayer packaging design.
Sixteen winners honored in 23rd annual awards ceremony.
New additives boost performance, processability, and appearance of biopolymer.
DuPont Packaging & Industrial Polymers, Wilmington, Del., has introduced two new grades of Selar PA amorphous nylon for use as a high-barrier resin in containers for nail polish and waterproof mascara.
WEB EXCLUSIVE: Prices are rising this month and next for several materials by anywhere from 4¢ to 10¢/lb
If they were having delivery, quality and consistency issues with the color compound they had purchased, most processors would probably try sourcing material from another compounder.
Extrusion processors typically run a number of different products and resins.
PBM Plastics in Newport News, Va., has commercialized a variant of the thermoforming process that reportedly produces deep-draw, highly uniform containers with low internal stresses.
In the last two years, DuPont Packaging & Industrial Polymers, Wilmington, Del. (plastics.dupont.com) has been actively expanding its portfolio of ethylene copolymers and taking them into new application areas.
Classic Containers Inc., a family-owned blow molder in Ontario, Calif., has been supplying bottles and closures to the personal-care market for more than 20 years.
U.S. injection molders are still pretty green when it comes to processing the new crop of renewably sourced biopolymers. These biologically derived polymers made from PLA, PHA and starch-based resins are attracting growing market interest as materials with no ties to petrochemical-based thermoplastics.
Two additive suppliers have expanded their offerings of modifiers for polylactic acid (PLA) biopolymers: •Biomax Thermal 300, a proprietary heatdistortion modifi er from DuPont Packaging and Industrial Polymers, Wilmington, Del., is said to allow PLA thermoformed packaging to withstand up to 95 C/203 F during transport, storage, and use.
Plastics are going “green,” but they will need some help to get there. Biodegradable polymers derived from renewable resources are attracting lots of interest and publicity, but that enthusiasm is counterbalanced by persistent questions of availability, cost, performance, and processability. All these issues are inter-related: Increasing demand will lead to more capacity, which will presumably lead to lower prices. But the foundation is market demand, which ultimately depends on whether biopolymers will have the performance properties and processability to compete with existing non-renewable plastics.
Three previously announced families of renewably sourced polymers for packaging and engineered products are now commercially available from DuPont Co., Wilmington, Del.
A previously announced line of formable sheets based on renewably sourced polymers is now commercially available from DuPont Packaging & Industrial Polymers, Wilmington, Del.
Innovative bag-in-the-bottle technology from Gaplast GmbH of Saulgrub-Altenau, Germany, uses coextrusion blow molding to produce a thin bag made of ionomer inside a PP bottle.
Among the host of new additives at K 2007 were a number of unusual entries: additives to add scratch resistance or reduce odor, leaps ahead in PP clarifying, specialized antioxidant protection for nanocomposites, a growth enhancer for greenhouse films, and a naturally free-flowing TiO2. In addition, “Green” was the theme of exhibits that highlighted “all-natural” additives for biopolymers, and colors to enliven recycled resins.
Two new families of starch-based bioplastics are coming to the U.S. market.