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Problema y solución

Respuestas prácticas a los desafíos comunes de los materiales plásticos

1506 preguntas
Q
Center porosity of large parts
A
Gate layout and sequential injection design of large parts are the key to success
Molds & Tooling porositylarge partsshrinkage compensation distancesequential valvegate layout
Q
Ejector whitening/ejector deformation of products
A
The ejection system design needs to fully consider the distribution and magnitude of demolding force
Molds & Tooling ejector whiteningejector bulgingdraft angleejector pinrelease agent
Q
Deposits on mold cavity surface
A
Mold deposits affect product surface quality and mold maintenance cycle
Molds & Tooling mold depositlow-molecular substancesrelease agentmold maintenancecleaning cycle
Q
Insufficient product gloss
A
Gloss is influenced by both mold surface quality and process conditions
Molds & Tooling glossmold polishingA1 grademold temperaturereplication rateshrinkage
Q
Sink marks and depressions on products
A
The essence of sink marks is insufficient shrinkage compensation; in severe cases, it affects product mechanical strength
Molds & Tooling sink markdepressionholding pressuregate solidificationwall thicknessshrinkage compensation
Q
Extremely low strength at weld lines
A
Q
High haze of SBC transparent products
A
Q
Storage cracking/delayed cracking of styrene-acrylonitrile copolymer PS products
A
PS delayed cracking is caused by the slow release of residual stress.
Molds & Tooling delayed crackingresidual stressannealinguniform wall thicknessmold temperature
Q
Shrinkage rate prediction deviation of styrene-acrylonitrile copolymer products
A
Shrinkage rate prediction needs to be comprehensively determined by combining material characteristics, product structure and process parameters.
Molds & Tooling shrinkage ratemold designwall thickness influenceflow directionmold trial verification
Q
Shrinkage rate prediction deviation of polystyrene products
A
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