二. Bottle Manufacture 4. Inspection and Packing ⚫ Use mechanical and electronic means. 1) Squeeze testers subject the container walls to a compressive force ( between two rollers) 2) Plug gauges check height, perpendicularity, inside and outside finish diameters. 3) Optical devices inspect for stones, blisters, checks, bird swings, and other blemishes and irregularities by rotating the container past a bank of photocells (Figure 6.4). ⚫ Faulty containers crushing into cullet. ⚫ Transported in reusable corrugated shippers; Shipped on pallets ⚫ Automatic equipment used to clear tiers off the pallet and feed into the filling machine.二. Bottle Manufacture 4. Inspection and Packing ⚫ Use mechanical and electronic means. 1) Squeeze testers subject the container walls to a compressive force ( between two rollers) 2) Plug gauges check height, perpendicularity, inside and outside finish diameters. 3) Optical devices inspect for stones, blisters, checks, bird swings, and other blemishes and irregularities by rotating the container past a bank of photocells (Figure 6.4). ⚫ Faulty containers crushing into cullet. ⚫ Transported in reusable corrugated shippers; Shipped on pallets ⚫ Automatic equipment used to clear tiers off the pallet and feed into the filling machine