Plastics Review

2023 / No 04

Properties of plastics, tests

Ageing tests - even faster

Accelerated ageing tests have a major role to play in the expected life expectancy and accelerate product development. Previously, the so-called. natural ageing tests were also popular in the past, but their importance has declined, especially the need to accelerate processes. Below are some of the latest instruments for this purpose are presented.

Leadership skills

Investment strategies in 2023

The impact of COVID on the plastics industry is fleeting, but problems have emerged in its wake: labour shortages, supply chain difficulties, inflation, high interest rates and the threat of recession are affecting the economic prospects of manufacturing companies and thus their machinery investment decisions and the threat of falling prices and the looming recession. Most firms see automation as the solution to labour problems, but some do, that are also recruiting immigrants and ex-convicts prisoners. Some machine manufacturers are also providing remote diagnostics and remote diagnostics and troubleshooting for their equipment to help companies employing inexperienced operators, others others are investing in new training places. Managing fluctuating order books is now a flexible investment financing model for plastics processing.

Plastics, composites, bioplastics

The role of moisture content in the processing of polyamides

Polyamides are one of the most widely used groups of engineering plastics. Their characteristic property is that they are very sensitive to hydrolysis. Accordingly, the processing understanding of the mechanism of action of moisture and, on this basis, the optimisation of process parameters (temperature and residence time).

The rise of recycled polymers in the engineering plastics market

With the objectives of sustainable development in mind, the European Union is making new recommendations, and standards that have a significant impact on plastics manufacturers. On criteria for recycled content are expected to be extended in the future to cover not only the packaging materials, but also in the production of technical articles and automotive components. will be set in the future. These targets need to be integrated into the design of the production site and manufacturers of raw materials. As a result, more and more of recycled engineering plastics on the market.

Recycling methods for fibre reinforced polymer composites

Despite their indisputable advantages, the uptake of fibre-reinforced composites is hampered by the fact that more difficult to recycle than thermoplastics. The following is a description of such available for the recovery of such composites. These include industrial on an industrial scale, unfortunately only mechanical shredding, which involves the deterioration of reinforcing are used. The others operate on a laboratory scale.

The role of PVC in medical technology

PVC plays an important role in the manufacture of medical products and equipment. In recent environmental and health concerns about both PVC and plasticisers in recent years. health and safety concerns have been raised. Developers are replacing soft PVC with other plastics, phthalate plasticisers with phthalate-free compounds.

Plastics processing, additive technologies

Polyethylene foams

Properties, types and applications of polyethylene foams, production methods an overview of. Promoting sustainability in plastic foam processing.

New requirement: accelerating the development of stabilisers

The development of stabilisers has been driven by new polymer types, such as biopolymers, on the one hand, and recycled polymers, on the other. The stabilizer industry is working hard to improve the quality of recycled polymers. to ensure that their products meet new user requirements. Now they are some of them.

How to preserve the quality of pelletisation in case of acid attacks?

Plastics processing machines are made of granules of different sizes, spherical or mainly cylindrical the various products. To produce the granules (or pellets), a few millimetres diameter fibres are used. Geometry of the die, The geometry of the extrusion die and the location of the fibre-forming holes depend to a large extent on the granulation (pelletisation) technology.

Multi-layer packaging solutions

Multilayer packaging materials are very important in applications where oxygen or moisture barrier must be provided. To increase recyclability, a number of alternative solutions exist, such as switching to mono-material films. These availability of these films is increasing as a result of the continuous development of production equipment and raw materials and the development of new materials.

Use of plastics

Window to sustainability - developments in plastic window profiles

The use of plastic profiles has become predominant in the production of both doors and windows. Although they already contribute to sustainability goals by improving thermal insulation, manufacturers are taking further steps towards sustainability. This applies to the raw materials and additives and recycling after use.

Geogrids and geotextiles - useful plastic auxiliaries for geotechnical applications

Various geogrids and geotextiles are increasingly used in road, environmental and civil engineering because they can save money and time in construction, while at the same time they also have a protective effect on the environment.

Plastics and the environment

New chemical recycling methods for the recovery of mixed plastic waste

This communication describes chemical reclassification methods that go beyond the simple pyrolysis and produce directly usable, small molecule chemical products from which plastics of the same quality as the starting material can be produced.

Mechanically recyclable resins and elastomers

This article describes systems that can be recycled despite the temperature and by mechanical mixing and shearing, that under the conditions of use they are cross-linked materials under the conditions of use. This can be achieved by the introduction of dynamically reconfigurable bonds, and even some epoxy or polyurethane materials traditionally considered unrecyclable resins can also be made recyclable.

Processing of plastics

What's new in 3D printing for medical applications

Below we try to give examples of how 3D printing has changed the way we medical practice, education and research, but we also highlight the limitations of of 3D printing applications in this field.