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 Exceeding Expectations: Mastering ±0.005mm Thickness Tolerance in PP 5-layer High Barrier Fresh Keeping Sheet

In the world of plastic production, the flatness is considered as one of the most important quality criteria. A recent example is the case of we PLM in PP 5-layer high-barrier fresh keeping sheet extrusion lines, facing significant challenges in maintaining the flatness of our product. Our client, a manufacturer of milk packaging boxes, demanded an exceptionally high standard of flatness, with thickness fluctuations kept +0.005mm/-0.005mm. The issue was critical; any deviation from these stringent standards could lead to a host of problems, such as difficulties in further processing, reduced product quality, compromised mechanical and sealing properties, ineffective barrier performance, material wastage, and increased wear on equipment.

The client’s previous extrusion line was failing to meet these high standards, causing considerable headaches for the them. The subpar flatness of the sheet was impacting every aspect of the client’s production process, from printing to the durability of the final product. This was not just a technical problem; it was a threat to the client’s business reputation and bottom line.

How did we tackle these seemingly insurmountable challenges? What innovations and technical advancements were necessary to achieve the exceptional level of flatness required of PP extrusion line by our client?

Understanding the gravity of the situation, we tackle Key areas of focus included temperature control, die design, haul off unit, coiling, and control systems.,etc. We left no stone unturned in their quest for perfection.

The results were nothing short of revolutionary. The newly designed extrusion line surpassed all expectations, achieving the client’s stringent flatness requirements with ease.

If you also meet same flatness problem, no matter PP extrusion line or other material extrusion lines, welcome to contact us for free consult.

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