tinplate cans detail a: two-piece cans vs. three-piece cans

1, what is two-piece can: two-piece can means that only two pieces of iron stamping and the formation of the tin can (cover and bottom), the can body and bottom is made of a piece of iron stamping, there is no seam, also called stretch can, the lid will have three processes, open material - Flying edge - rolled line, the bottom will have four processes, open material - flying edge - pre-rolled line - rolled line. Two-piece cans tin can shapes are round, square, rectangular, shaped and many others.

2, what is a three-piece can: three-piece can is three pieces of iron stamping made of iron cans (with cover, body and bottom), the body and bottom of the can is a combination of two pieces of iron together, three-piece cans process is relatively more, cover: open material - flying edge - -rolling line  can body: open material - pre-bending - corner cutting - forming - -buckle bone - punching body (buckle bottom) - sealing the bottom. The process of the bottom is: open material. The three-piece can process can be further divided into many different forms, there are sealed bottom, buckle bottom, hitting the hinge bit.

tinplate cans detailed II: heaven and earth lid, inner plug lid, hit the hinge bit and through the wire.

A tin can shape looks very simple, but in the production of a variety of molds are required, some slightly more complex process to more than a dozen sets of molds, just a single iron cover are many different processes of practice, the more common production methods are four: heaven and earth cover, inside the plug cover, hit the hinge and wear iron wire.

a, heaven and earth cover tin cans: heaven and earth cover is the lid and can body can be separated separately

II, the inner plug lid tin cans: the inner plug lid is two pieces of iron after stamping, forming the inlay together to form a lid, this lid will be tighter than the heaven and earth lid, sealing performance will also be a little better.

three, hit the hinge and wear iron wire: hit the hinge and wear iron wire looks almost the same on the surface, are the lid open, the lid and the jar is still connected, hit the hinge is the jar body to punch two holes, the lid and the jar body buckle up. Through the wire is the lid and the can body connected by a wire, just like a stationery tin.

tinplate cans detail III: what is the inside rolled edge, outside rolled edge, gong bottom, buckle bottom

The inner rolled edge and outer rolled edge refer to the production process of the lid, the inner rolled edge has four sets of molds, the edge of the lid is rolled inside, the outer rolled edge only needs three sets of molds, the edge can be seen from the outer surface,< lt;/p>

The gong bottom, buckle bottom refers to the production process where the can is knotted with the bottom, the gong bottom of the tin can from the outside side you can see the edge of the bottom. Buckle bottom of the tin can from the side is not to see the bottom of the can, the can body is straight, to see the bottom of the can can only from the bottom of the can.