Spectra’s on-going investment in the installation of the latest machinery and technology perfectly illustrates the company’s confident long-term commitment to future growth and expansion.

Every state-of-the-art blow moulding machine operating out of the companies bespoke manufacturing plant is carefully customised to meet Spectra's exacting requirements. Furthermore, these all-electric machines guarantee better energy efficiency, reduced noise pollution and counter the risks of oil contamination, a common problem with more conventional older hydraulic machines. Spectra can achieve impressive capacity levels of up to 100m units per annum at their Holton plant, made possible with innovative customisation of their blow moulding machinery which helps

Spectra can achieve impressive capacity levels of up to 100m units per annum at their Holton plant, made possible with innovative customisation of their blow moulding machinery which helps maximize manufacturing flexibility. All the more evident with their impressive range of standard and custom made HDPE bottles, available in 25ml up to 500ml capacities. Co-extrusion offers customers the additional benefits of

Co-extrusion offers customers the additional benefits of soft touch with unique colour finishes and special effects. For an environmental packaging solution, Spectra can also provide recycled HDPE for its customers.

What is Extrusion Blowmoulding?

Extrusion Blowmoulding is the process of manufacturing hollow plastic bottles by melting plastic resin and extruding a tube which is then clamped inside 2 halves of a water cooled mould. When the tube of molten plastic is in, it is then inflated using pressurised air to the shape of the cavity. While inside, the plastic will freeze off to the shape as it is forced against the inside. The mould will then open releasing the bottle so that the process can be r­­­­epeated.

What are the benefits of HDPE as a material?

One of the most common resins­­ used in blowmoulding, HDPE (high density polyethylene) can produce bottles with high stiffness, good resistance to water vapour and excellent resistance to alcohol, acids and alkali's. In its natural state HDPE will produce bottles that are opaque, however, a high gloss feel and appearance can be achieved if required. For a more squeezable feel, MDPE (medium density polyethylene) can be used for certain products such as creams and lotions. HDPE is suitable for recycling.