Problem & Solution

Practical answers to common plastic material challenges

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Q

Post-curing cracking

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), and ...

Material Analysis draft angle mold polishing holding pressure cooling time release agent

Q

Mold seal aging

A

This problem is a typical manifestation of mold seal aging in the RIM process, and the core of the solution lies in ensuring the precise ratio and sufficient mixing of the two components, while controlling the reaction temperature and curing conditions within the optimal window. It is recommended...

Molds & Tooling mold seal aging mold

Q

Abnormal reaction induction period

A

This problem is a typical manifestation of abnormal reaction induction period in the RIM process, and the core of the solution lies in ensuring the precise ratio and sufficient mixing of the two components, while controlling the reaction temperature and curing conditions within the optimal window...

Processing Machinery abnormal reaction induction period temperature

Q

Product surface sagging

A

This problem is a typical manifestation of product surface sagging in the RIM process, and the core of the solution lies in ensuring the precise ratio and sufficient mixing of the two components, while controlling the reaction temperature and curing conditions within the optimal window. It is rec...

Injection Molding draft angle mold polishing holding pressure cooling time release agent

Q

Catalyst precipitation

A

This problem is a typical manifestation of catalyst precipitation in the RIM process, and the core of the solution lies in ensuring the precise ratio and sufficient mixing of the two components, while controlling the reaction temperature and curing conditions within the optimal window. It is reco...

Processing Machinery catalyst precipitation temperature

Q

Viscosity differences between raw material batches

A

This problem is a typical manifestation of viscosity differences between raw material batches in the RIM process, and the core of the solution lies in ensuring the precise ratio and sufficient mixing of the two components, while controlling the reaction temperature and curing conditions within th...

Processing Machinery viscosity differences between raw material batches temperature

Q

Multi-gate filling imbalance

A

This problem is a typical manifestation of multi-gate filling imbalance in the RIM process, and the core of the solution lies in ensuring the precise ratio and sufficient mixing of the two components, while controlling the reaction temperature and curing conditions within the optimal window. It i...

Injection Molding dimensional accuracy holding pressure mold temperature shrinkage rate non-return ring

Q

Defects at sudden wall thickness changes of the product

A

This problem is a typical manifestation of defects at sudden wall thickness changes of the product in the RIM process, and the core of the solution lies in ensuring the precise ratio and sufficient mixing of the two components, while controlling the reaction temperature and curing conditions with...

Molds & Tooling bubbles raw '2079851475616104451 back pressure control vacuum shrinkage cavity mold venting

Q

Accumulator nitrogen leakage

A

This problem is a typical manifestation of accumulator nitrogen leakage in the RIM process, and the core of the solution lies in ensuring the precise ratio and sufficient mixing of the two components, while controlling the reaction temperature and curing conditions within the optimal window. It i...

Material Drying accumulator nitrogen leakage pressure

Q

Mixing head liner wear

A

RIM mixing quality is the first element determining product consistency. The core control points are: the impingement mixing Reynolds number of the mixing head (ensuring turbulent mixing), the matching of the viscosities of the two components (reducing viscosity differences), the accuracy of the ...

Molds & Tooling mixing uniformity mixing head impingement mixing component viscosity metering accuracy

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