Bottling & packagings (PET, PP & PE)

Plastic bottles made out of PET are currently widely replacing heavy and fragile glass bottles as reusable packaging for mineral water and lemonades. PE and PP are also being used for producing non-reusable bottles and packagings.

They are produced in large quantities via the bottle-forming process. Preformed plastic blanks, or so-called preforms, pass infrared heat sources, which heat them to the required temperature for forming, in excess of the glass transition temperature. For PET, this temperature is approximately 110 °C.

PE and PP are turned into containers in similar processes. These polymers are difficult to heat by infrared radiation. Therefore, the use of the heating accelarators developed by Budenheim is very helpful when working with PE and PP. They provide for an economic and simple production process.

Heating acceleration

When paints are cured by infrared light, the absorption properties can be considerably enhanced by the addition of heating accelerators.
This enables a significant reduction of the required heating power and simultaneously shortened cycle times. Phosphate pigments from Budenheim have the properties required for this purpose. They are ideally suited for use in paints and varnishes, and guarantee an attractive surface finish. They have high absorption in the infrared spectral region (heat radiation). At the same time, because they are totally transparent to visible light, the paints remain colour-fast and therefore do not fade.