From：Honge Package Co.,Limited Release time：2019-03-11
Overview：Lipstick paper cans are round packaging products that integrate metal, paper and plastic. They are usually divided into spiral type and rewind type. Because the paper can is made of paper as the main raw material, it is easy to recycle and treat
Reasons and solutions for the bottom cover of the paper can
Lipstick paper cans are round packaging products that integrate metal, paper and plastic. They are usually divided into spiral type and rewind type. Because the paper can is made of paper as the main raw material, it is easy to recycle and treat; it has excellent protection performance, can be waterproof, moisture-proof, and has certain heat insulation effect; it is odorless, safe and reliable, and is especially suitable for food packaging; it can be filled with various shapes. Commodities, and low noise when filling; various shapes and structures, the outer layer can be color-printed, with good display effect; light weight, only 30% of the iron can, easy to flow, easy to use, low price. Paper cans are widely used in tea cans, food cans, wine cans, written cans, calendar cans, etc. Although the paper can has excellent capacity and wide application, it still has some problems that affect the use, and it is common for the bottom cover of the paper can be peeled off.
Compared to traditional tin cans, paper cans are more often fixed using glue or a bottom forming process. Therefore, it will be lower in terms of firmness and strength. However, as long as the factory strictly controls the production quality of paper cans. The same can avoid this problem. Below we will analyze how to avoid the occurrence of the bottom of the can bottom:
1. The connection between the barrel and the bottom of the barrel during the production process of the paper can is mainly completed by the sealing process. Therefore, the operation of the equipment for forming the back cover will affect the overall quality of the paper barrel. The operation of the equipment should always check the various parts of the sealing mold. The change of the size, because the mold is closed at the bottom of the sealing can, the vertical plane of the locking ring mold is prone to deviation, which causes the binding of the bottom of the paper barrel to be different, thereby affecting the degree of matching between the bottom of the barrel and the barrel.
2. When the bottom cover of the paper can is made of plywood, the thickness of the selected plywood is not uniform, and most of the thickness does not meet the national standard. In addition, the bonding strength between the plywood layer and the layer is low, and it is easy to be separated from the barrel body, and the dimensional tolerance of the plywood cutting material is not accurate; the following material size should be strictly controlled within the tolerance range, and quality monitoring is performed.
There is also a special need to pay attention to the fact that the quality of the bonding glue used in the production of paper cans must be good. Only when the above requirements are met can the problem of falling off the bottom cover of the paper can be avoided.