Problema e solução

Respostas práticas para os desafios comuns dos materiais plásticos

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Q

PVC Gloves

A

Glove pinholes rely on slurry and hand mold management; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubleshooting reference for similar problems in the future

Molds & Tooling PVCglovespinholedipping

Q

PVC Toy

A

Slush molding bubbles are controlled by defoaming and mold temperature; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubleshooting reference for similar problems in the future

Molds & Tooling PVCslush moldingbubbledefoaming

Q

PVC Mold Anti-Corrosion

A

Anti-corrosion of PVC molds is a design-stage decision; stainless steel or plating treatment is far more economical than repairing the mold afterward; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Molds & Tooling PVC;mold corrosion;stainless steel;chrome plating;rust prevention

Q

PVC Mold Temperature Effect on Gloss

A

Surface gloss is guaranteed by stable mold temperature; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubleshooting reference for similar problems in the future

Molds & Tooling PVCmold temperatureglossstability

Q

PVC Mold Temperature Uniformity

A

Pipe fitting roundness guaranteed by cooling uniformity; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubleshooting reference for similar problems later

Molds & Tooling PVC mold temperature uniformity pipe fitting ovality

Q

PVC Mold Temperature 30-50

A

PVC is a low mold temperature material, cooling efficiency first; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubleshooting reference for similar problems later

Molds & Tooling PVC mold temperature cooling demolding

Q

PVC Hot Runner Risk

A

PVC with hot runner needs extra caution, cold runner is safer; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubleshooting reference for similar problems later

Molds & Tooling PVC hot runner dead corner cold runner

Q

PVC Mold Temperature 30-50℃

A

PVC mold temperature set by rigid/soft grading; 30-50℃ baseline with sufficient cooling, both surface and cycle considered; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Molds & Tooling PVC; mold temperature; 30-50℃; surface; cooling

Q

PVC Foam Product Poor Surface Skinning

A

PVC skinning = 'temperature and pressure synchronization': rhythm matching of skinning and foaming is the core; mold temperature and pressure stability determine surface skinning quality; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurre...

Molds & Tooling PVC; foam board; skinning; mold temperature; pressure

Q

PVC Processing Yellowing (Early Thermal Degradation)

A

PVC yellowing is a 'degradation alarm' rather than ordinary color difference: conjugated polyene coloring indicates de-HCl has already occurred, and it will autocatalytically worsen; temperature must be lowered immediately, the stabilizer system checked, dead corners cleaned — delaying one minute...

Molds & Tooling PVC; yellowing; thermal degradation; dehydrochlorination; stabilizer

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