Tech Blog

Melamine packaging

For manufacturers, inaccurate packaging not only fails to meet national standards but also increases labor costs and the risk of product quality issues. Hot wire? The scale of quantitative packaging without barrels has become a game-changer for melamine packaging. This is a simple breakdown of the problem and its solutions.

Melamine is a versatile chemical widely used in textiles, plastics, and coatings, typically produced and transported as an ultrafine powder. However, packaging this powdered material faces enormous challenges – poor weighing accuracy, high dust content, and low efficiency. Packaging errors not only affect product quality but also increase workplace dust, require frequent manual reinspection, and reduce operational efficiency.

For our customers, inaccurate packaging affects purchase costs and the accuracy of materials. So automatic quantitative packaging is particularly important.

Key issues of traditional melamine packaging

Most melamine manufacturers used to rely on bucket-type quantitative packaging scales, but these systems have obvious flaws:

Large weighing error: For 25kg melamine bags, the national standard allows a maximum error of ±40 g (±1‰), but traditional bucket scales usually have an error of over 500 g. This forces manual rechecking and adds extra work.

High labor intensity: Manual review is time-consuming, and workers must repeatedly handle heavy bags.

Dusty working environment: When materials fall or bags are opened for retesting, ultrafine melamine powder can generate significant dust. It not only pollutes the air but also accumulates on equipment, leading to further weighing errors.

Why does the bucket scale not work on melamine?

The main reasons for inaccuracy and dust issues are design and material properties:

Mechanical delay error: When the scale sends a “stop feeding” signal, the feeding screw needs time to stop. During this delay, additional materials continued to decrease, increasing the weight.

Material falling impact: Melamine powder falls from a high place into the weighing bucket, generating an impact force that distorts the weight reading.

Air in the material: Melamine powder contains trapped air. When feeding, air will rush out, causing a surge in dust and reducing the balance’s sensitivity.

Residue accumulation: Powder adheres to the inner walls of the weighing bucket and feeding system. These remaining materials were distributed across subsequent bags, resulting in inconsistent weights.

Bucket-free automatic quantitative packaging: the perfect solution for melamine

Bucketless scales, especially the horizontal spiral-feeding dual-station model, perfectly solve these problems. That’s why they are the ideal choice for melamine:

Ultra high precision: By eliminating the weighing bucket, the scale can directly weigh the bag (gross weight method). The error is controlled within ± 40g, which fully complies with national standards. No need to manually recheck!

Minimal dust: The feeding system is located near the bag opening to reduce the height of material falling. Less air turbulence means less dust, improving the working environment.

Higher efficiency: The dual-station design compensates for the slow single-bag speed of the non-bucket scale. It can pack over 240 bags per hour, which is fast enough for large-scale production.

Reduce labor costs: Full automation eliminates the need for manual review and baggage handling, greatly reducing labor intensity.

conclusion

For melamine and other ultrafine powders, quantitative packaging without barrels is no longer an option but a necessity. It addresses the core pain points of inaccuracy, dust, and inefficiency, helping manufacturers and users save costs.