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Packaging Container Structure Design and Manufacturing - Metal Containers (3)

March 06, 2023

Chapter IV Structure Design and Manufacturing of Two-piece Cans

One or two cans

The two-piece can body consists of a side wall and a tank bottom. The molding method includes a shallow stretching method and a multi-stage stretching method.


The characteristics of two-piece cans and specifications

1. Classification of two-piece cans

1 Deep drawing tank 2 thinning drawing tank

2, the characteristics of two-piece cans

1The outer surface can be fully printed and decorated to improve the packaging effect. 2 Two-piece cans are light, the thin-walled 3 can body and the tank bottom are integrated and seamless, the mechanical strength is high, the sealing is good, and the can lid is easily sealed. 5 Simple molding process and quick molding

3, two pieces of material

4, the specifications of the two-piece cans

Three, two-piece can structure

1, can body 2, can lid

Four, two-piece can body manufacturing process and quality inspection

1, can body manufacturing process

1 Shallow stretch tank (shallow tank). Its tank draft and can diameter ratio is less than 1
2 Stretch deep tank (deep irrigation). The ratio of tank height to tank diameter is greater than 1
3 thin stretching tank

2, quality inspection


Technical requirements of 1 pair of tanks 2 Quality inspection methods 5. Manufacturing process of circular top open lid The top open lid is the plate that is stamped and formed into a round or shaped lid with reinforced concrete. When opening the can, it is cut with a special tool. The manufacturing process route of the circular top opening cover is:
1, cutting board
2、Covering the round edge
3, plastic injection and drying

Six, easy to open the lid manufacturing process

1, easy to open the cover of the classification of 1 open mouth size 2 points of the material used to connect 3 open way points

2, the performance requirements of aluminum alloy materials

3, easy to open the manufacturing process and equipment 1 pull ring easy to open the lid production process 2 base lid production 3 finished lid

4. Technical requirements for easy opening cover 1 Basic size inspection 2 Main performance 3 Appearance quality requirements 4 Coating quality requirements

5、Quality check method 1 Easy to open the lid compressive strength test 2 Easy to open the lid tightness test

Seven, determine the tank type, structure of metal cans

1, the factors that affect the cost

2, should meet the packaging requirements of internal packagings Tank capacity refers to the volume of metal cans at 20 °C, calculated to deduct tank bottom and tank lid height.

Eight, the choice of metal cans of raw materials

The material and its thickness should be determined based on the structural strength of the metal pipe. The thickness of the sheet metal used for the metal tube is approximately 0.15-0.5 mm.
1, the determination of the material thickness should be based on the structural strength of the metal cans to determine the cans
2, the calculation of material area

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