UPDATE 1-ITW affirms third-quarter, full-year forecasts

* Demand for auto, welding, packaging products strong

* Rolling three-month sales up 13 percent

CHICAGO, Sept 17 (Reuters) - Illinois Tool Works Inc ITW.N affirmed its forecast for third-quarter and full-year earnings on Friday.

The company said it expected to report a third-quarter profit of 72 cents to 84 cents a share from continuing operations.

For the full year, ITW said it expected to report earnings of $2.82 to $3.08 a share from continuing operations.

The update came as the diversified manufacturer reported rolling sales figures for the three months ended Aug. 31.

ITW said its sales were up 13 percent for the period, lifted by continued strong demand for its automotive, industrial packaging and welding products. (Reporting by James B. Kelleher; Editing by Lisa Von Ahn)