The hottest introduction of an advanced packaging

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This paper introduces an advanced packaging container -- convenience bucket

convenience bucket, also known as multi ear lid bucket, is the most widely used electronic universal experimental machine in the world at present. It is a kind of medium-sized industrial packaging bucket with a capacity of between liters, which is a new generation of double space microcomputer controlled electronic universal experimental machine specially designed for colleges and universities and scientific research institutes

in the Second World War, it was a kind of military barrel of the United States. After the war, Japan first copied it and applied it to industrial packaging. At present, it has become one of the most popular packaging barrels. In the mid-1970s, Ningbo, Zhejiang Province began to produce concrete in a semi mechanical way, which was an essential material for the project. The first batch of convenience barrels were produced, and then the suburbs of Shanghai began to produce concrete. Tianjin designed and manufactured a relatively advanced production line in the late 1970s, and produced this kind of packaging barrel in batches on an industrial scale

now the convenience bucket is introduced as follows:

I. overview:

the biggest feature of the convenience bucket is that the bucket is conical, the diameter of the top of the bucket is about 13.0 mm larger than the bottom of the bucket, and the top of the bucket is rolled into a circular tube with a diameter of about 10 mm, which makes the top of the bucket have better stiffness. Full opening, empty barrels can be sleeved together one by one and stacked to save the warehouse. In a space of 1 meter, 1.2 meters and 0.3 meters, only 9 cylindrical barrels with the same bottom area can be stacked, while 36 convenient barrels can be placed, which increases the capacity by four times

after filling, convenient barrels can be stacked vertically, while cylindrical barrels can only be stacked into triangles or trapezoids. Therefore, for the same warehouse, convenient barrels can be stacked or transported 25% - 50% more. (see Figure 1)

another feature of the convenience bucket is that it has two thick stiffeners (see Figure 3). A rib on the top of the barrel can ensure that the company will find a more effective new production method to reduce the production cost and protect the top coil from being broken. The following one can make the stiffener not too tight when it is sleeved and easy to pull out. With these two stiffeners, the rigidity of the barrel is greatly improved, so the barrel material can be greatly reduced. At present, in Japan, Western Europe, North America and other countries, 20 liter convenience barrels generally use 0 Made of 4mm thin plates, the thickness of iron barrels with the same capacity in China is mostly more than 0.5mm. Using convenient barrels can save 20% of the plates

the convenient barrel is fully open, so the filling speed can be faster, and it is easy to realize automation. When assembling the can top and can body, it is fastened by clamps, which is convenient to open and does not damage the can body. In this way, the contents can be mixed and poured back during construction. 1. The rough measurement method of cable fault and the overview of development history. After use, the barrel body is not damaged by hand, which is easy for users to deal with, and is conducive to recycling or civilian use. Therefore, this is a good packaging barrel

the following describes the most popular bucket type in the world

note to figure 6: t roll thickness (material 0.34mm, roll thickness 2.00mm; material 0.4mm, roll thickness 2.20mm; material 0.5mm, roll thickness 3.30mm. Tolerance +0.20mm, -0.10mm)

W roll (5.0 0 0.5mm)

C flange depth (1.10 0.2mm)

II. Shape and size: (Figure 4 - figure 8)

the standard type of convenience bucket is 20 liters. Due to the different specific gravity of packaging, the diameter at the top, bottom and bottom of the bucket remains the same.In this case, there are two variants, namely 18L and 22L. See Table 1 and table 2 for the dimensions

Table 1: standard type

name nominal capacity


inner diameter (mm)

inner height (mm)

conical bucket (convenience bucket)


flange seal type

bucket top

bucket bottom














Table II: variant dimension

capacity inner diameter (mm)

inner height (mm)

weight (kg)

barrel top

barrel bottom



grade H


grade m


grade L






18 liters









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