Problema e solução

Respostas práticas para os desafios comuns dos materiais plásticos

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Q

Uneven mold temperature

A

This problem is a typical manifestation of uneven mold temperature in transfer molding; the core of the solution lies in the rational design of the runner and gate system, the effective transmission of transfer pressure, and the uniform control of mold temperature. It is recommended to start trou...

Molds & Tooling uneven mold temperaturetemperaturemold

Q

Uneven material preheating

A

This problem is a typical manifestation of uneven material preheating in transfer molding; the core of the solution lies in the rational design of the runner and gate system, the effective transmission of transfer pressure, and the uniform control of mold temperature. It is recommended to start t...

Molds & Tooling uneven material preheating

Q

Product weld lines

A

Weld lines cannot be completely eliminated but can be greatly reduced. The core strategy is to let the two melt streams converge under conditions of high temperature and low gas resistance——raise the mold temperature to slow the front cooling, improve venting to eliminate air cushion blockage, op...

Molds & Tooling weld linemelt temperatureventing designgate layoutmolecular diffusion

Q

Uneven fiber orientation

A

This problem is a typical manifestation of uneven fiber orientation in transfer molding; the core of the solution lies in the rational design of the runner and gate system, the effective transmission of transfer pressure, and the uniform control of mold temperature. It is recommended to start tro...

Molds & Tooling runner designgate sizepressure losscold slug wellrunner temperature

Q

Fiber breakage

A

This problem is a typical manifestation of fiber breakage in transfer molding; the core of the solution lies in the rational design of the runner and gate system, the effective transmission of transfer pressure, and the uniform control of mold temperature. It is recommended to start troubleshooti...

Molds & Tooling dimensional accuracyholding pressuremold temperatureshrinkage ratecheck ring

Q

Product embrittlement

A

The essence of embrittlement is that the material's toughness reserve declines to the point of being unable to meet use requirements. The control key is the 'three temperatures'——processing temperature (avoid excessive degradation), drying temperature (avoid too low leaving residual moisture and ...

Molds & Tooling embrittlementthermal degradationdrying conditionsregrind ratioimpact strength

Q

Product dimensions out of tolerance

A

This problem is a typical manifestation of product dimensions out of tolerance in transfer molding; the core of the solution lies in the rational design of the runner and gate system, the effective transmission of transfer pressure, and the uniform control of mold temperature. It is recommended t...

Molds & Tooling dimensional accuracyholding pressuremold temperatureshrinkage ratecheck ring

Q

Product warpage deformation

A

Warpage is the macroscopic bending caused by inconsistent shrinkage of various parts of the product. The solution idea is: achieve uniform cooling of all parts during the cooling stage (cooling water channel optimization), adopt symmetrical layout and isotropic design in structural design (wall t...

Molds & Tooling warpage deformationcooling uniformityresidual stressgate symmetryannealing

Q

Product discoloration

A

This problem is a typical manifestation of product discoloration in transfer molding; the core of the solution lies in the rational design of the runner and gate system, the effective transmission of transfer pressure, and the uniform control of mold temperature. It is recommended to start troubl...

Molds & Tooling color deviationbarrel temperatureresidence timecolor masterbatch dispersionthermal degradation

Q

Poor product surface gloss

A

This problem is a typical manifestation of poor product surface gloss in transfer molding; the core of the solution lies in the rational design of the runner and gate system, the effective transmission of transfer pressure, and the uniform control of mold temperature. It is recommended to start t...

Molds & Tooling surface glossmold polishingmold temperatureholding pressurerelease agent

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