Evonik launches DEGALAN VP P 34, a new heat-sealing binder, on the market

Excerpt: METHACRYLATE binders from Evonik, marketed as DEGALAN, offer unique possibilities for formulation of heatsealing lacquers. They are used in the sealing of yoghurt containers and Pharmaceutical blister


Evonik launches DEGALAN VP P 34, a new heat-sealing binder, on the market

METHACRYLATE binders from Evonik, marketed as DEGALAN, offer unique possibilities for formulation of heatsealing lacquers. They are used in the sealing of yoghurt containers and Pharmaceutical blister packaging.

The requirements placed on packaging coatings are high because packaging substrates can vary widely. Yogurt lids, for example, consist of aluminum or plastic; these in turn must be sealed to a variety of container materials such as polypropylene (PP), polystyrene (PS) and polyethylene terephthalate (PET).

Evonik's methacrylate experts have now succeeded in developing a new generation of heat-sealing bead polymers. The new product, DEGALAN VP P 34, reduces the complexity of coating formulation enormously because only a single binder is used and only one solvent is therefore necessary. The reason is that DEGALAN VP P 34 is a bead polymer that is easily soluble in ethyl acetate, a commonly used, highly volatile solvent for heat-sealing lacquer formulations.

DEGALAN VP P 34 based formulations can be applied directly on the aluminum foil so that primers or formulations with a PVCbased adhesion promoter, which are still necessary today, can now be dispensed with.

A further advantage is the heat seal strength on a variety of substrates and over a range of temperatures. A coating based on DEGALAN VP P34 applied on aluminum foil and sealed against PVC blister packs, has a heat seal strength exceeding 7 N/15 mm at a sealing temperature of 180 °C. For yogurt lids sealed against PS this same heat seal strength can be attained at a sealing temperature of only 140 °C.

Samples of DEGALAN VP P 34 are now available. Further information and samples can be obtained from Global Technical Service at +49 6151 18 4960.

Versatile Ink Particularly Suited to Polyethylene

CODING specialist Linx Printing Technologies has introduced a new ink to its range that offers excellent adhesion to polyethylene (PE) and most polypropylene (PP) applications, and which is suitable for non-contact food packaging in line with Swiss Ordinance 817.023.021, the European reference for food packaging inks.

Linx Black PE Ink 1130 has been formulated in particular to meet the specific challenges of effective printing onto polyethylene and polypropylene, which are widely used materials in many different end-markets and packaging applications, such as food, pharmaceutical, cosmetics and personal care, automotive, cable and wire.

"PE and PP are traditionally challenging substrates to adhere to, due to their low surface energies," explains Ndidi Ihekwaba, Product Specialist, Inks, Linx Printing Technologies. "Linx Black PE Ink 1130 is able to overcome this challenge and creates excellent adhesion to these substrates, ensuring a quality code each time."

In addition, because the ink also offers a durable adhesion profile across many other substrates - including ABS, acrylic, aluminium, glass, HDPE, LDPE, PET and varnished card - it gives manufacturers the flexibility to retain a single ink, rather than multiple types, on site for use across all their package and product coding requirements.

Linx Black PE Ink 1130 provides excellent print quality and is fast drying to deliver clear, readable codes in even the harshest of production environments.

The ink can be specified with all new Linx 5900 and Linx 7900 printers incorporating Midi and Ultima heads

TenCate cetex cfrt helps in weight-reduction of airbus a350 xwb aircraft

TENCATE Advanced Composites, among the leading global composite materials companies for aerospace applications, is one of the key suppliers of thermoplastic composite materials for the Airbus A350 XWB, which completed a significant milestone event with the first commercial delivery to Qatar Airways.

TenCate Cetex thermoplastic composite materials are used for the production of an array of components on the Airbus A350 XWB aircraft, specifically high volume components within the carbon fiber reinforced thermoplastic (CFRT) fuselage. These thermoplastic composite materials offer weight reduction along with high strength and durability properties. TenCate Advanced Composites work with leading suppliers within the aerospace industry for structural, semi structural and interior applications on programs across the Airbus Group, such as the Airbus A350 XWB and previously launched Airbus A380.

Frank Meurs, group director of TenCate Advanced Composites says: “We are very pleased to be a supplier on the A350 XWB program, and congratulate Airbus on the first delivery. It is an aircraft that demonstrates thermoplastic composite materials and their increased use in the future of aviation structures”.

Milliken exhibits latest developments in additives for pp & pet

MILLIKEN kicked off the New Year by showcasing the latest advancements in PP and PET at Arabplast 2015, January 10-13 in Dubai, United Arab Emirates. Milliken displayed a number of key innovations at Arabplast 2015.

These include:

Ultra Clear PP with Millad NX 8000

Millad NX 8000 allows for superior clarity in PP for both thermoformed and injection molded applications, giving brand owners the opportunity to switch from PET and PS to a lightweight and cost-effective solution with Ultra Clear PP.

Milliken's clarifying agents go beyond thermoforming and injection molding. PP clarified with Millad NX™ 8500E is the perfect solution for extrusion blow molding in lightweight bottles, providing enhanced clarity and surface finish.

Hyperform HPN nucleating agents

Providing improved stiffness/impact balance in PP and eliminating warpage, Milliken's Hyperform HPN-20E allows for consistent processing in items such as buckets, with excellent stacking performance.

Hyperform HPN-600ei is the perfect additive for deep-drawn thermoformed cups, enabling significant improvements in ovality, stiffness/impact balance, processing speed and overall aesthetics.

UV protection for PET packaging with ClearShield™

Longer shelf life for packaged goods is critical in hot and dry climates like the Middle East, making UV solar radiation particularly important. Milliken's ClearShield Colorless UV Absorbers for PET packaging extend the shelf life of packaged foods, beverages and other products by maintaining the transparency of PET while blocking harmful ultraviolet (UV) rays up to 390 nm.

Univ. Researchers develop wood-based flame retardant with potential in building applications

FIRE consumes wood ferociously, in a deadly blaze - but the substances used to treat wood to resist burning can also be noxious and toxic. A Stony Brook University Materials Science Professor guided an undergraduate and two Long Island high school students as they developed a patent-pending, environmentally sustainable way to render the wood used in construction flame retardant—and 5x stronger—using natural materials.

“Our Office of Technology Transfer and Industry Relations has already gotten interest from several companies regarding possible license,” says Miriam Rafailovich, who oversaw the research. Rafailovich is Distinguished Professor in the Department of Materials Science and Co-Director of the Program in Chemical and Molecular Engineering at Stony Brook University.

The work took place at the Garcia Center for Polymers at Engineered Interfaces at Stony Brook as part of the Garcia Research Scholar Program. The pre-college program offers the opportunity for high school students and teachers to perform research at the forefront of polymer science and technology alongside Garcia Center faculty and staff.

"The students were the primary drivers in this work; I guided them in addressing the pertinent questions,” Rafailovich says.

The research was initiated by Tehila Stone, a former student in the Garcia program. Stone worked as an undergraduate mentor at Stony Brook this past summer with the high school students, Daniel Kim and Noah Davis.

Davis, a senior at Earl L. Vandermuelen High School on Long Island, says he has always been interested in math and the sciences. “This led me to look for research programs over the summer. I learned about the Garcia Program, and the focus on polymer-based engineering immediately drew my interest.” Kim, a senior at Smithtown High School West—also on Long Island—says “the Garcia Program was the optimal choice for access to a quality lab and great mentorship.”

The team started off with a simple 2x4 from Lowe's; the flame retardant is a phosphor-based material safe for the environment. The researchers engineered a compound that impregnates wood's natural structure, forming a wood-plastic composite that exceeds UL 94 V-O criteria for safety of flammability. “The breakthrough was in the formulation of a compound that extinguishes a flame without decomposing into toxic byproducts,” Rafailovich says.

That's ideal for the construction industry. Says Kim, “What interested me the most was that it could be used to safeguard homes and buildings. The idea that the world can really benefit from flame retardant wood was my greatest motivation for this project.”

The interdisciplinary effort involved Dr. Marcia Simon, Professor and Director for Graduate Studies in the Department of Oral Biology and Pathology at the Stony Brook University School of Dental Medicine. Simon is also Director of the Living Skin Bank, and helped design the toxicology testing and evaluate EPA reports.

“The students chose to use resorcinol bis(diphenyl phosphate) (RDP), which the EPA has declared a preferred substitute for halogenated flame retardants,” Simon says. “Preliminary data in our laboratory confirms that when RDP is reacted with cellulose, or clays, such as was done by the students, it is safe and non-cytoxic.

Although the finished product is safe, in vitro tests suggest that the unreacted RDP liquid, used in industrial plants, can be cytotoxic and should be handled with care.”

Rafailovich is pleased the young learners had this opportunity. “I believe that a great deal of innovation is possible if we encourage students to explore their ideas,” she says. “Students are more in-tune than older adults with the latest science developments in the consumer arena, but don't have the tools and knowledge to act on these ideas. We hope that by helping them do that, they will learn the power of science and be inspired to remain in the field.”

Davis certainly feels that way. “Dan and I worked with different chemicals and beakers to measure out volumes; we used heating ovens to create reactions between the wood and chemicals; after the wood samples were created, we tested their properties with the UL-94 flame test and an Izod impact test. While I already had a large interest in science before the program, the experience only furthered that interest. I currently want to study biomedical engineering, and see this as a direct result of my experiences within the program.”

Says Rafailovich, “Stony Brook is a unique place where all this is possible. New science is problem-focused, and requires interdisciplinary collaborations across all areas of the campus. With its medical, dental, and engineering facilities, and proximity to Brookhaven National Laboratory and outstanding industrial parks, Stony Brook is ideal for this type of research.”

It's also a good place for translating research into applications. “Our Office of Technology Transfer and Industry Relations is exceptional,” Rafailovich says. “It requires a special staff to keep up with the diversity of science and industry, and over the years Stony Brook has established this network. A technology transfer staff that teaches and involves student is even more rare, making the Stony Brook years very memorable for any student who is fortunate to experience this.”

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