PRESSURE MOULDING PROCESS THERMOSETTING
Thermosetting are plastics that cannot be deformed after their hardening. They are strong, glass-like polymer materials, which are connected three-dimensional through chemical primary valency bonding. The connection happens through mixing pre-products with junctions and is activated either chemically at room temperature with catalysts, or at thermally at high temperatures.
WHAT WE CAN OFFER YOU
Pressure moulding for closures is one of the oldest processes in terms of plastic processing. However, this old technique is not out-dated by the younger injection moulding process, but even offers some major advantages.
Throughout Germany we are one of the few companies that can offer you the advantages of the pressure moulding process.
We operate 30 pressure moulding machines overall, with a pressure force of 4 to 60 tons. These can be divided into 14 single, 14 4-fold, and 2 8-fold machines.
For this production technique we are still using the oldest regrowing plastic, urea-moulding compound. In order to achieve a suitable product in terms of food-law we can use a melamine mould material or equip our thermosetting closures with the necessary inserts.
As one of the only plastic processing technique, pressure moulding uses explicitly regenerative raw materials.
As mentioned before in this brochure, there are several advantages of pressure moulding compared to injection moul- ding.
VALUABLE FOR THE SENSES
Through a highly condensed and almost glass-like material characteristic, the thermosetting closures receive a unique, valuable haptic impression. This is enhanced by the sustainability and weight of the material.
Our closures produced with pressure moulding also differ in in terms of looks. There are a many possibilities of different variations; a wooden or marble structure could be imitated for example. However, also single-colour or coated surfaces can be attractive.
No other closure makes the typical sound when opening or closing glass bottles. When thick glass meets thick ther- mosetting a distinctive sound is gained, which supports the quality of the e.g. packaged cream and therefore allows assumptions about the quality while opening the closure.
SMALL BATCH SIZES
Production with pressure moulding offers another advantage in contrast to other processes:
Low xed costs! Due to this issue it is possible to manufacture even smallest contract sizes under attractive conditions.
HIGH THICKNESS POSSIBLE
Your requested closure design includes a massive wall thickness? A problem with thermoplastic, but not at all with thermosetting.