We have been manufacturing plastic frames in New Zealand with virgin food grade plastic, from our own dies since 2000. We are a New Zealand pioneer and still the best. In fact, we invented the black frame, now the world wide industry standard. Black shows more easily the white eggs and young larvae in their cells.
Why plastic? Simply it is more durable, more efficient, and more cost effective. Frames do not blow out in the extractor. Good drawn comb is preserved, saving the bees energy and hence producing more surplus honey.
We can supply the full depth frame in two different end bar widths: 33mm, the generally accepted New Zealand standard, or 35mm which is most common in the rest of the world and which we export to Australia.
Bees need the frames to be coated with a very thin layer of beeswax to encourage them to draw the comb. These frames come "uncoated" and you will need to coat them yourself. A useful winter job. If you are pressed for time, we can coat the frames for you for an extra charge.
As an aside, we can mould frames in any colour you want. We know of a few clever beekeepers who will mould other colours to help monitor the age of the comb, discarding comb, say five years old. Contact us if this is of interest. The coloured food grade plastics are much dearer than the basic plastic and a small extra charge for a colour is therefore necessary.