ABC

The call for expressions of interest to buy Tasmanian drinks producer Hartz has been extended until the end of next week.

About 30 expressions of interest have been received and bids were due to close today.

One of the company's major creditors, Business Expansion Capital, has appointed controllers to handle Hartz's finances, and says some interested parties have had delays in securing unconditional finance approval.

BEC's managing director, Rick Leighton, is confident Hartz has a strong future.

"You never know until the final bid comes in, but we've got what I would say would be six or seven very, very interested parties.

"None of those are seeking to relocate it to the mainland," he said.

Hartz's owner, Stephen Powell, is fighting in the Supreme Court to stop any sale and regain control of the company.

The matter is expected to be heard later this month.