He said the initial plan was to raise between $5m and $10m through the site www.ownthefactory.co.nz which would provide a "stepping stone to getting the rest of the money".
Current pledges ranged in size from $50 to $50,000 and had come from New Zealand and as far away as Australia and the United States, O'Malley said.
Several "wealthy individuals", whom O'Malley would not name, had also indicated they were interested in discussing a future contribution, he said.
The pledges were non-binding, but those making them had been asked to do so only if they intended to invest in the future, he said.
The results so far were "pretty exciting".
Mondelez, the owner of Cadbury and the factory, said it had received several expressions of interest from parties wishing to take over production of kiwi treats including Jaffas and Pineapple Lumps, and was working through these.
"While we take the time to assess the responses we have received from interested parties including Mr O'Malley's community-based initiative, it's not appropriate for us to comment on the specific detail of these responses," a Mondelez spokesperson said.