Petcore approves Mitsubishi's nylon MXD6 in multi-layer PET bottles with no tie layers, adhesive in up to 2% of the bottle stream

Graziela Medina Shepnick

Graziela Medina Shepnick

BRUSSELS , October 23, 2008 (press release) – Mitsubishi Gas Chemical is a producer of Nylon MXD-6, a barrier material used in packaging applications.
 
A thin layer of MXD6 is used as the middle layer of a 3-layer construction with no adhesive tie layers to reduce the gas permeability of the PET bottles. Bottles using this construction have been tested using the Petcore bottle to bottle protocol1. For the test clear, 3-layer, co-injected bottles were used containing approximately 5% of Nylon MXD6.
 
The Committee stipulated that:
 
(a)  the preform must be injected so that the MXD6 layer is only in the bottle wall; 
(b)  the container must be multi-layer with no tie layers; 
(c)  there must be good air elutriation during the recycle process.
 
Petcore’s Expert Evaluation Committee, whose mission is to determine the impact of new PET containers and additives on the quality of the recovered PET flake for recycling, has come to the conclusion (taking into consideration local accumulation effects) that Mitsubishi’s Nylon MXD6 in multi-layer bottles with no adhesive tie layers will have no negative impact on current European PET recycling at levels of up to 2% of the bottle stream. 
 
Petcore recognises the need for innovation.  It is also recognised, however, that the introduction of barrier systems is cumulative in the recycle stream.  In the event that the introduction of a specific new barrier system or too great a concentration of older barrier materials has an adverse affect on the quality of the resulting RPET (eg colour/haze), Petcore reserves the right to re-test and re-evaluate its position with regard to technology approval.  
 
Petcore (PET containers recycling Europe) is a non-profit European trade association based in Brussels. Its mission focuses on sustainable growth for post-consumer PET collection whilst supporting all PET recycling processes as a key integrated part of European Plastics Waste Management initiatives and by validating and supporting innovative PET solutions from a recycle perspective.

Petcore’s Expert Evaluation Committee consists of specialists operating both in the PET industry and in the field of packaging waste management.

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