Mold Opaque White PET Bottles – Without Pigment
Trexel and Husky are cooperating on molding recyclable opaque white preforms for PET bottles, which provide a light barrier using foam instead of pigment.
Opaque white PET bottles can be produced via foaming, with no pigment, so recyclability is unaffected. (Photo: Trexel)
At K 2022 in Düsseldorf this week, one of the sustainability-themed exhibits by Trexel is an opaque white PET bottle that can function as a light barrier for sensitive products like milk. The white color is provided by Trexel’s MuCell microcellular foaming technology, without the cost and environmental impact of color additives. This bottle was produced via cooperation with Husky, whose multilayer co-injection process was used to produce three-layer PET preforms with a foamed layer in the center. Nothing is added to the PET beyond inert nitrogen gas for foaming, so recyclability is not affected.
This exhibit expands on another theme of Trexel’s K exhibit, which is its increased support for extrusion blow molding of products for all markets – no longer just automotive.
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