Technical characteristics of NawaRo®-enclosure series

Regarding mechanical properties, the tools used for the enclosure series resemble those of high impact plastics (e.g. ABS) and, depending on their formulation, consist of biopolymers, polyhydroxialkanoates, polyhydroxibutyrates, polycaprolactone, polyester, starch, Ingeo (TM), lignin, natural resins, natural waxes, natural oils, natural fatty acids, cellulose, organic additives and natural reinforcing fibres. The properties of the respectively used bio-granules can be adapted for higher requirements by means of a suitable additivation. With regard to UV resistance, the natural variant is suitable for outdoor use for short to medium-term goods that are not exposed to direct sunlight. For longer lasting prevention, an additional UV protector can be incorporated. In the range there are both bio-granules, which are suited for hard casings, and variants with a high level of resistance to stress cracking. Casings made of bioplastics can be processed, by milling and drilling for example, in exactly the same way as comparable parts consisting of conventional plastics and also offer the same design freedom as petroleum-based polyamides. However, painting them reduces their compostability. Having said this, great strides are being made in the development of organic colour batches for direct colouring during the injection moulding process, the use of which Richard Wöhr GmbH will favour as soon as the requirements for particular product characteristics have been met.

NawaRo-mounting plates made of bioplastics

We can give the following answers to frequently asked questions (FAQ):

Why do you prefer lignin to other bio-derivatives such as cellulose as a basis for the production of NawaRo-enclosures?

Lignin is an idustrial by-product (it accrues for example in paper production as it would contribute to yellowing) and therefore has a good CO2 balance. By comparison, the production of cellulose or cellulose acetate demands a large amount of resources, for example due to high temperatures during the production process. Furthermore, our compound contains wood fibres from regional sawmills in southern Germany and therefore from sustainable forestry.

Are your NawaRo®-enclosures one-hundred percent biodegradable?

Yes, they are. A restriction exists only, if for example metal parts such as insert nuts are mounted.

How should disposal be performed ideally?

Additional climate neural energy is produced during disposal by means of thermal recycling. Alternatively, the material can be shredded mechanically and then composted naturally and decomposed by microorganisms.

Does the material, which is used for injection moulding, consist one-hundred percent of renewable raw materials?

Yes, that's the case and that's what differs our products from those of some competitors, which, although they are biodegradable, do not consist one-hundred percent of renewable raw materials. As the main component lignin, which, after cellulose is the most common naturally occurring organic material, we do not practice overexploitation of nature.

Are deviating colour shades possible, too?

Yes, on the one hand we use bio-granulates, in which all colour shades of the RAL or PANTONE spectrum are feasible and on the other hand bio-granulates, whose surface is characterized a lot by the colour and structure of the wood fibre after injection moulding. The latter can not obtain no pure colour, but therefore emphasize the ecological-natural character in the colour shades from beige to black. More and more also biological colours (organic colour substances) to colour the granulate are demanded. Until yet, the range of colours is not very large and not all colour systems are covered. But the development in this field is promising, especially because demand increases continuously.

Certification EN ISO 14001

Following the DIN EN ISO certifictaion 9001 (quality) and 13485 (medicine), Richard Wöhr GmbH also received environmental certification in accordance with EN ISO 14001 in 2010. Producing in a sustainable and environmentally-friendly manner is a great concern for the company and its employees, with a view to future generations as well. With corresponding measures, with which all employees are involved from the beginning, the owner-managed familiy enterprise more than meets the catalogue of requirements for environmental certification.