Cardboard and packaging company Amcor has reported a rise in its half-year profit.

For the six months to the end of December, Amcor made $238.3 million after tax.

That is an increase of just over 16 per cent compared to the same period the year before.

Amcor says the result has been helped by strong sales volumes growth in emerging markets.

However, the company says the strong Australian dollar has affected its overseas earnings, cutting $20 million from its profit.