While Aastha Spintex will launch its ₹170 crore IPO on June 29 at a fixed price of ₹136 per share, packaging solutions provider Knack Packaging will open its ₹440 crore public issue on July 1 with a price band of ₹161-170 per share. Here’s a look at the key details, issue structure, subscription dates and listing timelines of the two upcoming IPOs.