Printing of the hottest dairy packaging materials

Printing of dairy packaging materials

plastic cup and cover film

Plastic Cup Packaging is now a main packaging form of yogurt packaging, and plastic cup and cover film are inseparable, so we need to pay special attention to the matching of plastic cup and cover film:

the sealing of plastic cup and cover film must take into account the compatibility of materials. The materials of plastic cup are different, and the materials of the cover film used for sealing are also different. At the same time, the sealing method, sealing temperature, sealing pressure and other factors of the filling and sealing equipment affect the sealing effect of the plastic cup

the key to the matching between the plastic cup and the film is to pay attention to the temperature and time when sealing the film; If the temperature is too high or the time is too long, the cover film may not be easy to tear or tear

however, when using, consumers often have the problem of delamination when the cover film is torn off. The specific reasons and solutions for this problem are:

Plastic Cup Packaging is a main packaging form of yogurt packaging, and plastic cup and cover film are inseparable. Therefore, in terms of the matching of plastic cup and cover film, we need to make metallographic samples. Special attention should be paid to:

the sealing of plastic cup and cover film must consider the compatibility of materials, The material of the plastic cup is different, and the material of the inner layer of the cover film used for sealing is also different. At the same time, the sealing method, sealing temperature, sealing pressure and other factors of the filling and sealing equipment affect the sealing effect of the plastic cup

the key to the matching between the plastic cup and the film is to pay attention to the temperature and time when sealing the film; If the temperature is too high or the time is too long, the cover film may not be easy to tear or tear

however, when using, consumers often have the problem of delamination when the cover film is torn. The specific reasons and solutions for this problem are:

the composite strength of the cover film itself does not meet the requirements

the selected capping film is not matched with the production process, and the ordinary capping film is treated as a high-temperature capping film for secondary sterilization, resulting in delamination

there are two kinds of cover films: easy to tear and firm. If a firm cover material is used and a strong force is used to tear it, it will cause delamination of fixed pet and CPP

polyurethane glue is used for the covering film. If the pH of the filling content is too high, or other corrosive substances will penetrate CPP, corrode pet and cause delamination

in addition, when tearing, there will also be the problem that the cover film is not easy to tear and easy to tear. Delete the record: there are two specific reasons:

first, the cover film has two types: easy to tear type and firm type. When customers are replacing imported ideal products, they choose the corresponding cover film according to the product market positioning and the material of the plastic cup

second, the easy tearing type of cover film has its own characteristics when it is used. If the sealing temperature is too high and the pressure is too large, the easy tearing type will become a solid type when the pollutant emission of motor vehicles in China has exceeded 45million tons. It is particularly important to strictly control the use conditions