Problem & Solution

Practical answers to common plastic material challenges

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Q

Demolding cracks

A

This problem is a typical manifestation of demolding cracks in compression molding; the core of the solution lies in proper preheating of the material and assurance of flowability, as well as precise matching of mold temperature and molding pressure. It is recommended to adjust coordinately from ...

Molds & Tooling draft anglemold polishingholding pressurecooling timerelease agent

Q

Difficult demolding/mold sticking

A

This problem is a typical manifestation of difficult demolding/mold sticking in compression molding; the core of the solution lies in proper preheating of the material and assurance of flowability, as well as precise matching of mold temperature and molding pressure. It is recommended to adjust c...

Molds & Tooling draft anglemold polishingholding pressurecooling timerelease agent

Q

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

Flow lines/flow marks

A

This problem is a typical manifestation of flow lines/flow marks in compression molding; the core of the solution lies in proper preheating of the material and assurance of flowability, as well as precise matching of mold temperature and molding pressure. It is recommended to adjust coordinately ...

Molds & Tooling flow marksmelt temperaturemold temperatureinjection speedripples

Q

Over-curing/scorching

A

The core of curing abnormality is that the rate and degree of the crosslinking reaction deviate from the optimal window. The adjustment idea is the 'three-element method': formulation (precise metering of catalyst/curing agent), temperature (precise control of mold and material temperature), time...

Molds & Tooling curing degreecatalyst dosagemold temperaturecuring timepost-curing

Q

Overflow flash

A

The root cause of flash is that the mold-opening force generated by the cavity internal pressure exceeds the closing force of the clamping system. The logic chain of the solution is: first reduce the cavity pressure peak through process adjustment, then check and repair the clamping system to ens...

Molds & Tooling flashclamping forceparting line gapcavity internal pressureburr

Q

Mold Wear

A

This problem is a typical manifestation of mold wear in the RIM process; the core of the solution lies in ensuring the precise ratio and full mixing of the two components, while controlling the reaction temperature and curing conditions within the optimal window. It is recommended to start troubl...

Molds & Tooling dimensional accuracyholding pressuremold temperatureshrinkage ratecheck ring

Q

Mold Corrosion

A

This problem is a typical manifestation of mold corrosion in the RIM process; the core of the solution lies in ensuring the precise ratio and full mixing of the two components, while controlling the reaction temperature and curing conditions within the optimal window. It is recommended to start t...

Molds & Tooling mold corrosionmold

Q

Strong Part Odor

A

This problem is a typical manifestation of strong part odor in the RIM process; the core of the solution lies in ensuring the precise ratio and full mixing of the two components, while controlling the reaction temperature and curing conditions within the optimal window. It is recommended to start...

Molds & Tooling demolding draft anglemold polishingholding pressurecooling timerelease agent

Q

Poor Part Weather Resistance

A

This problem is a typical manifestation of poor part weather resistance in the RIM process; the core of the solution lies in ensuring the precise ratio and full mixing of the two components, while controlling the reaction temperature and curing conditions within the optimal window. It is recommen...

Molds & Tooling poor part weather resistance

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