What is plastic packaging?

According to the New Zealand Government’s declaration of plastic packaging as a priority product under the Waste Minimisation Act 2008.    
Corrigendum—Declaration of Priority Products Notice 2020 – 2020-go4533 – New Zealand Gazette

“All packaging used for consumer goods at retail or wholesale level (excluding beverage containers) made of plastic resin codes 1, 2, 3, 4, 5, 6 or 7, singly or in combination with one or more of these plastics or any non-plastic material, and not refilled by the producer for retail sale or able to be refilled by the consumer at a retail establishment.”