Valve plates made of Victrex PEEK 450GL30 (source: Victrex)

Putting steel in the shade: PEEK valve plates last 12x longer

Victrex showcased the performance of their polyaryletherketones (PAEK) product portfolio across a broad temperature range. Victrex PEEK 90HMF40, which was recently accredited  by Airbus, is said to permit weight savings of up to 40% compared to  aluminium. The polymer is claimed to be characterised by up to 100 times longer fatigue strength and up to 20% higher specific strength and stiffness as compared with aluminium 7075-T6 used in the aerospace industry under the same conditions.

In automotive construction, components made of Victrex WG polymers with optimised slip/friction properties are intended to extend the service life and raise the efficiency of components, including electric pumps, for example. As compared to other high-performance plastics, the friction coefficient with Victrex polymers is lower, depending on the requirement profile, and remains stable over the life of the product, according to the company.

1 year ago

Milliken: Clarifying, nucleating and reinforcing agents

Milliken will showcase its new additive solutions, among those are Millad NX 8000 and NX 8500E clarifying agents for PP, Hyperform HPN 68L, HPN-20E and HPN-600ei nucleating agents for PP, Hyperform HPN-20E nucleating agent for PE and Hyperform HPR-803i reinforcing agent.

Clarifying agent Millad NX 8000 is said to enable PP parts to be made with optical properties hitherto only associated with more glass-like polymers such as polycarbonate, crystal polystyrene and acrylics. Millad NX 8500E is a variant of NX 8000 that has been fine-tuned for extrusion-blow moulding (EBM) PP applications. Use of Millad NX 8500E can simplify production of multilayer bottles, for example, since the same grade of PP can now be used for the outer layer and for the inner layer, says Milliken. The special formulation of Millad NX 8500E can help to improve gloss on the inside and outside of bottles. This is an important feature for products such as bottles for shampoos and detergents, where brand owners strive to have their products stand out on the shelves.

Milliken’s synthetic reinforcing agent Hyperform HPR-803i is said to allow automotive designers to create parts that are up to 15% lighter without compromising performance. Hyperform HPR-803i is added at a lower addition rate than mineral fillers to PP compounds, so the compounds have a lower density. Used alone or with talc, it is said to help automakers meet weight reduction targets and produce cars with reduced fuel consumption and lower vehicle emission.

Compounds containing Hyperform HPR-803i can be processed on existing conventional injection moulding equipment, without processors having to make additional investments.

OEMs can utilise Milliken’s Hyperform HPR Reinforcing Agent for weight reduction. (photo: Milliken)

2 years ago

Addex: Capabilities for automatic gauge control

Addex, a leading global supplier of blown film equipment and components, will exhibit both its air ring-based (EGC) system for blown film extrusion lines, which is said to deliver great flexibility for processors, enabling easy retrofits of existing or new systems in order to provide reduced thickness variation, increased yields and raw material savings. The company will also present its IBC-based (IGC) system and Digital Internal Bubble Cooling (DIBC) system which delivers the fastest reaction time in the industry to ensure precise bubble control, helping processors to speed product changeovers and significantly reduce scrap. Another key highlight will be Addex’s well-established Manual Gauge Control (MGC), based on the company’s Dual Lip Air Ring, which is said to permit selective adjustment to correct film gauge deviation caused by extruder, die, or ambient anomalies by as much as 25%.

2 years ago

PVC-O pipes up to 800mm are possible

Hall 16 | Booth B17

Oriented PVC material is stronger and tougher than PVC-U and provides better overall performance. It has approximately twice the strength and ten times more impact resistance than PVC-U.  But technical limitations and poor efficiency in their manufacturing process has been an obstacle to mass production and the use of PVC-O pipes in general. However, these limitations have been overcome with the employment of the new air process of molecular orientation developed by Molecor which now enables pressure pipes to be produced up to DN 800mm (30").

Example of orientated PVC-O pipe (photos: Molecor)

2 years ago

Film converting leaders Goebel and IMS merge activities

For the processing of films Goebel offers cutting and slitter rewinding systems. The primary and secondary machines process a wide range of different films: BOPP, BOPET, OPP, CPP, BOPA, BOPS, PE, including for capacitor films, optical films, metallised films and many other special films in thicknesses from 0.5 to 500µm .
Latest developments include: Monoslit and Monoslit Giant as well as xtraslit. The Monoslit II is the primary slitter rewinder for the processing of, for example, BOPP or BOPET for condenser and optical films. According to the company, the machine design allows the recording of roll diameters up to 1,550mm and finished roll diameter up to 1,250mm. With a speed of up to 1.500m/min it processes original rolls up to a width of 9,000mm to finished rolls with minimal cutting widths up to 300mm. The Monoslit Giant is the latest development. It processes 11,000mm wide original rolls and is thus, according to the manufacturer, the widest and fastest slitter rewinder currently available on  the plastic film processing market .

According to the Goebel, the Monoslit Giant design allows the recording of roll diameters up to 1,550mm and finished roll diameter up to 1,250mm.(photo: Goebel)

2 years ago

Resisting the heat

The Euro 6 exhaust gas standard demands considerable reductions in emissions of nitrogen oxide, hydrocarbons and soot particles, compared with previous requirements. In order to meet the new limits, the automotive industry is relying on low-pressure exhaust gas recirculation as well as reductions in engine size, coupled with turbocharging to maintain the same or achieve a higher performance. These developments lead to much higher levels of loading in the charge air duct and to considerably higher temperatures and pressures.

3 years ago

Ticona: PP and UD-GF for vehicle storage compartment flap

Inexpensive and resource-efficient lightweight construction is the challenge which is faced by a team of specialists from Ticona, the engineering polymers business of Celanese, from the Fraunhofer Institute for Chemical Technology (ICT) and the engineering company Edag. Their objective: the design and prototyping of a weight-optimised commercial vehicle storage compartment flap. The example chosen was a reinforcement frame using novel materials combined with the technology for the laying of thermoplastic tape which makes optimal use of the properties inherent in the material.

Polypropylene (PP) was used as the matrix material and unidirectional oriented glass fibres (UD-GF) for the reinforcing inlay in the form of what are known as UD-tapes. Sebastian Baumgärtner from the Fraunhofer ICT explains the procedure: “By processing the structure optimised in the 3D space at the 2D level, we were able to generate a flat inlay in the first process step using a tape laying machine; this flat inlay was consolidated thermally and can then be processed as a component-optimised semi-finished product”.

If components such as this reinforcing inlay have a frame-like structure, this step could have large material-saving potential. UD-tapes are only laid in the component sections in which they are required, thus reducing waste, depending on component geometry.

“In the downstream thermoplastic shaping process, the consolidated inlay is then heated in an infrared heater within the melting range of the matrix material and then shaped in a mould to form the structural component”, Manfred Reif, Application Development Engineer Composites at Ticona, explains the further process steps. “Water jet cutters then trim the fibre composite component and make the assembly and function holes. The steel outer skin is then joined to the composite structure by roll hemming in the final assembly”.

Positive conclusion: there was a considerable weight saving in the component demonstrated when compared to the steel construction currently used today. A solution was found that is also economical for small production runs  thanks to lower tool costs. Savings can also be made by designing the component taking the loads into account. Material use is thus minimised, and further savings can be generated by using the  comparatively inexpensive material combination PP-GF70.

The matrix from polypropylene (PP) and the unidirectional oriented glass fibres (UD-GF) for the reinforcing inlay form UD-tapes processed in the multi-layer inlay. (photo: Ticona)

3 years ago

Lüttgens Kunststoff-Technik: Polymer metal hybrid components

Lüttgens Kunststoff-Technik was showcasing its expertise in the area of overmoulding of metal components with technical polymers. Such lightweight hybrid solutions with a high degree of function integration and stiffness are of special focus for the company. One recent project was an automotive rear gate closing unit with a length of 70mm and a weight of 13g manufactured by overmoulding a precision-stamped metal component with a glass fibre reinforced polyamide.

In partnership with its customers, Lüttgens develops concepts, provides support from component analysis, material selection, design and prototype production right up to testing and quality control. Beyond the provision of exterior door handles, chassis components or gear levers, the company has evolved into a major provider of plastic overmoulded lock components in Europe.

Automotive rear gate closing unit with a length of 70mm and a weight of 13g manufactured by overmoulding a precision-stamped metal component with a glass fibre reinforced polyamide (photo: Lüttgens)

3 years ago

DuPont: ‘Metal detectable’ acetal grade for food closures

Swedish company WeLoc – Weland M. AB taps DuPont Delrin acetal resin for use in a new range of food-industry bag closures for its suitability for ‘snap-closure’ action, its durability at -50°C and this particular grade’s ability to be seen by metal detectors. These features, combined with the good creep resistance, strength, stiffness, toughness, low wear and low friction, offer WeLoc and other food industry suppliers an engineering polymer capable of replacing metal components in a huge array of applications. Metal or X-ray detection is required in the food industry to protect against foreign material cross-contaminating food. This is one of two new food-compliant Delrin resins developed specifically for food processing equipment components; material handling equipment, such as conveyor chains and hoppers; food-manipulation tools, such as cutters, shovels, scrapers; and forms and moulds. Particles as small as 3mm, the size of three sugar grains, can typically be detected using standard inspection systems. This helps ensure contaminated food does not reach the consumer.

Medium-viscosity Acetal copolymer, suitable for the snap-closure, is pre-coloured in the right shade of blue for the food industry. (photo: DuPont)

3 years ago

Solvay Engineering Plastics: Automotive cooling solution

Solvay Engineering Plastics introduced a hydrolysis and road salt resistant polyamide-based Technyl eXten grade for automotive thermal management systems. Initially developed for Japanese and Korean carmakers, this material is said to demonstrate high chemical resistance to calcium chloride, the preferred road salt used in countries with lower freezing temperatures, such as Russia. The material will be used for radiator-end tanks in a future Renault-Nissan platform.

The hydrolysis-resistant Technyl ’34NG’ products ranging from 25 to 50% glass reinforcement are specifically designed for every part in contact with glycol, such as radiator-end tanks, expansion tanks, thermostat housings and oil modules. In addition to assisting Tier one suppliers in the material selection and validation, Solvay Engineering Plastics also provides OEM-approved testing capabilities to validate parts.

A cooling radiator in Technyl from Solvay manufactured by Valeo Thermal Systems (photo: Solvay)

3 years ago