Canning and Fish Packaging Technology

Unit 3 - Unit operations in canning

3.2.4.2.3.Factors affecting quality of double seam

• Shape of the cover/lid and its dimensions
• Shape and the dimensions of body flange; these factors depend on empty can manufacturer.
• Depends on the chuck and the shape of the rollers and their dimensions.
• Seamer adjustment

These depend on manufactures of the machine and the seamer operator of the canning plant. During the use of the seamer, the dimension for the chuck and the rollers change due to wear and tear, if they are found defective, they have to be replaced. This is completely dependent as the food canners control and it is very essential to check the seamer and the seam formed from it to the processor's satification at the beginning of the canning process and sometimes it may be necessary to inspect the seamer and the seam several times in a day.