250g kraft paper box is made of 250g Kraft Paper, which has better toughness and tear resistance. It can bear 5-15kg items. The cost of 250g Kraft Paper is slightly higher than some thin cartons. Due to its high strength and durability, it can reduce packaging damage and reduce packaging costs overall. Its good versatility and customizability can adapt to the packaging requirements of a variety of different items. From a long-term perspective, it is very promising.
Before producing 250g kraft paper box, what raw materials should we prepare first:
Kraft Paper:
250g/㎡ Kraft Base Paper, with good compression and tear resistance;
Corrugated Base Paper:
Corrugated core paper processed into wavy shape by corrugating machine, flat between two layers of kraft paper, increase the cushioning performance and compressive strength of the carton;
Glue:
Paste the corrugated core paper and kraft paper together, and glue the sides, seals and other parts;
Ink:
Print the surface of the carton, and prepare the color to be printed.
During the entire production process, the choice of glue is mainly starch glue and hot melt glue. Both have their own advantages and disadvantages. Different applicable scenarios can be selected according to their own environment.
After the production is completed, the 250g kraft paper box must be inspected for quality, and qualified products can be shipped.
Appearance inspection:
Check whether the surface of the carton is flat, whether there are wrinkles, damage, stains, scratches and other defects, check whether the printed pattern and text are clear and complete, whether the overprint is accurate, whether the color meets the design requirements, and observe whether the shape of the carton is regular, whether the four corners are vertical, and whether the sides are parallel;
Dimensional accuracy inspection:
Use measuring tools such as rulers, tape measures or calipers to measure the length, width and height of the carton. The dimensional deviation of ordinary cartons is usually controlled within ±3mm. For cartons with higher precision requirements, the deviation range may be smaller;
Adhesion strength inspection:
Check whether the glue is evenly applied, whether there is leakage or overflow, whether the bonding is firm, and whether there are problems such as debonding and bubbling.
If there is a problem with a detail of the 250g kraft paper box, it must be repaired before shipping. For the convenience of users, the size specifications can be customized.
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