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Causes of cracking of PP strapping during embossing

Causes of cracking of PP strapping during embossing

  • Categories:Industry News
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  • Time of issue:2021-11-16 16:30
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(Summary description)The production process of PP strapping is firstly to control the temperature of the extruder, and then cooling. The temperature of the strip is very high after it exits the machine head. It must be cooled in water immediately, and then stretched. The purpose of stretching is to improve the strapping. The longitudinal strength reduces the elongation. Stretching must be carried out in boiling water, generally one stretch is used. The last is embossing. The stretched packing belt passes through two patterned pressure rollers and then is pressed onto the pattern. Its function is to increase friction during use, without slipping, and looks beautiful in appearance.

Causes of cracking of PP strapping during embossing

(Summary description)The production process of PP strapping is firstly to control the temperature of the extruder, and then cooling. The temperature of the strip is very high after it exits the machine head. It must be cooled in water immediately, and then stretched. The purpose of stretching is to improve the strapping. The longitudinal strength reduces the elongation. Stretching must be carried out in boiling water, generally one stretch is used. The last is embossing. The stretched packing belt passes through two patterned pressure rollers and then is pressed onto the pattern. Its function is to increase friction during use, without slipping, and looks beautiful in appearance.

  • Categories:Industry News
  • Author:
  • Origin:
  • Time of issue:2021-11-16 16:30
  • Views:
Information

The production process of PP strapping is firstly to control the temperature of the extruder, and then cooling. The temperature of the strip is very high after it exits the machine head. It must be cooled in water immediately, and then stretched. The purpose of stretching is to improve the strapping. The longitudinal strength reduces the elongation. Stretching must be carried out in boiling water, generally one stretch is used. The last is embossing. The stretched packing belt passes through two patterned pressure rollers and then is pressed onto the pattern. Its function is to increase friction during use, without slipping, and looks beautiful in appearance.

 

pp strap

So what are the reasons for the cracking of the PP strapping during the embossing process?

1. First of all, we need to see if there is a problem with the raw material. If the raw material is recycled material, the composition of the PP strapping is not clear and the parameters are also unstable, which will also cause the PP strapping to crack during embossing.

2. Secondly, we have to check if the thickness of the PP strapping is too thin. If the thickness of the PP strapping is too thin, it will be too tight during embossing, which will also cause the PP strapping to be produced to embossing. Cracked.

3. Next, let's see if the temperature of the oven is too low or the cooling time is too long.

4. Then we have to check whether the proportional control is correct when compounding additives.

5. Finally, we also need to observe the production speed. If the production speed of PP strapping is too fast, it will cause cracking.

The above is about the reasons for the cracking of PP strapping during embossing. If the PP strapping is produced to the embossing process, you can analyze the reasons for the cracking of the PP strapping during the production and embossing according to the above points, so as to be targeted. To solve the problem.

Xinmingyi Packaging has 17 years of experience in the strapping industry, focusing on production:PP strapping, automatic strapping, semi-automatic strapping,PET strapping, stretch film, ceramic special Corner protection, paper corner protection. The products serve the electronics, hardware, furniture, clothing, logistics, electrical appliances and other industries. Welcome to contact us or leave a message online.

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