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Praktische Antworten auf häufige Herausforderungen mit Kunststoffmaterialien

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Abnormal pressure in the inner cavity of double-wall products causes deformation

In summary, the causes of the 「Abnormal pressure in the inner cavity of double-wall products causes deformation」 problem can be attributed to the combined action of multiple factors such as vent hole blockage and gas in the inner cavity shrinking during cooling to generate negative pressure. Solv...

Molds & Tooling Abnormal pressure in the inner cavity of double-wall products causes deformation、rotational molding、pressure adjustment、cooling process、venting design

Dynamic balance failure of the product on high-speed rotating equipment

In summary, the causes of the 「Dynamic balance failure of the product on high-speed rotating equipment」 problem can be attributed to the combined action of multiple factors such as severely uneven product wall thickness causing mass eccentricity. Solving this problem requires starting from aspect...

Molds & Tooling Dynamic balance failure of the product on high-speed rotating equipment、rotational molding、wall thickness control、rotation parameters

Gel particles appear inside the product wall (fisheyes)

In summary, the causes of the 「Gel particles appear inside the product wall (fisheyes)」 problem can be attributed to the combined action of multiple factors such as the powder containing high-melting-point impurities and insufficient sintering temperature. Solving this problem requires starting f...

Molds & Tooling Gel particles appear inside the product wall (fisheyes)、rotational molding、temperature control

Carbon deposit layer appears on the mold inner wall

In summary, the causes of the 「Carbon deposit layer appears on the mold inner wall」 problem can be attributed to the combined action of multiple factors such as deposition of resin decomposition products from long-term use and improper mold cleaning. Solving this problem requires starting from as...

Material Drying Carbon deposit layer appears on the mold inner wall、rotational molding、mold design、resin characteristics

The product discolors and becomes brittle after ultraviolet irradiation

In summary, the causes of the 「The product discolors and becomes brittle after ultraviolet irradiation」 problem can be attributed to the combined action of multiple factors such as poor UV resistance of the resin and no light stabilizer added. Solving this problem requires starting from aspects s...

Material Drying The product discolors and becomes brittle after ultraviolet irradiation、rotational molding、resin characteristics

Microbubbles appear on the product surface (blowing agent residue)

In summary, the causes of the 「Microbubbles appear on the product surface (blowing agent residue)」 problem can be attributed to the combined action of multiple factors such as blowing agent mixed into the powder and the resin decomposing and generating gas during processing. Solving this problem ...

Material Drying Microbubbles appear on the product surface (blowing agent residue)、rotational molding、resin characteristics、surface quality

Rotating arm bearing seizing at high temperature

In summary, the causes of the "Rotating arm bearing seizing at high temperature" problem can be attributed to the combined action of multiple factors such as Bearing grease fails at high temperature, Bearing clearance becomes smaller due to thermal expansion.To solve this problem, it is necessary...

Molds & Tooling Rotating arm bearing seizing at high temperature rotational molding rotation parameters

Stress cracking of the product after contact with chemical reagents

In summary, the causes of the "Stress cracking of the product after contact with chemical reagents" problem can be attributed to the combined action of multiple factors such as Poor chemical resistance of the resin, Large residual stress.To solve this problem, it is necessary to start from aspect...

Material Drying Stress cracking of the product after contact with chemical reagents rotational molding resin characteristics stress control

Non-uniform crystallization on the inner wall of the product (coarse spherulites)

In summary, the causes of the "Non-uniform crystallization on the inner wall of the product (coarse spherulites)" problem can be attributed to the combined action of multiple factors such as Too slow cooling causes coarse crystallization, Wide molecular weight distribution of the resin.To solve t...

Material Drying Non-uniform crystallization on the inner wall of the product (coarse spherulites) rotational molding cooling process resin characteristics

Mold heat deformation in the heating oven

In summary, the causes of the "Mold heat deformation in the heating oven" problem can be attributed to the combined action of multiple factors such as Insufficient heat resistance of the mold material, Poor structural rigidity of the mold.To solve this problem, it is necessary to start from aspec...

Molds & Tooling Mold heat deformation in the heating oven rotational molding mold design material selection heating process

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