Torsten Kruse’s Post

Wall Thickness Variations in Molded Parts and the Impact on Freeze-Off www.kruseanalysis.com / www.krusetraining.com / www.molding-expert.com In manufacturing, particularly in injection molding and other molding processes, controlling wall thickness variations is crucial for producing high-quality parts. These variations can significantly impact the finished product's structural integrity and aesthetic quality, potentially leading to product failure or customer dissatisfaction. Additionally, inconsistencies in wall thickness can lead to a phenomenon known as "freeze-off," where parts of the mold solidify prematurely, disrupting the flow of material and affecting the outcome. #injectionmolding, #plasticsindustry, #moldmaking, #molding, #moldingdefects #plasticinjectionmolding, #plastics, #plasticsengineering, #molddesign, #partdesign, #moldex3d, #Spritzguss, #plastics, #plasticinjectionmolding, #plasticsengineering, #partdesign #arburg,#kunststofftechnik #kunststoffe ,#seminar, #kunststoffindustrie, #polymers,#moldmaking, #moulding,#mouldmaking,#mouldmaker

This shows the effect of design features on mold processing. Wall thickness variations as well as rib thicknesses play a vital role in melt filling and packing. A good explanation on the same. Worth sharing by Kruse Training.

Wall Thickness Variations in Molded Parts and the Impact on Freeze-Off www.kruseanalysis.com / www.krusetraining.com / www.molding-expert.com In manufacturing, particularly in injection molding and other molding processes, controlling wall thickness variations is crucial for producing high-quality parts. These variations can significantly impact the finished product's structural integrity and aesthetic quality, potentially leading to product failure or customer dissatisfaction. Additionally, inconsistencies in wall thickness can lead to a phenomenon known as "freeze-off," where parts of the mold solidify prematurely, disrupting the flow of material and affecting the outcome. #injectionmolding, #plasticsindustry, #moldmaking, #molding, #moldingdefects #plasticinjectionmolding, #plastics, #plasticsengineering, #molddesign, #partdesign, #moldex3d, #Spritzguss, #plastics, #plasticinjectionmolding, #plasticsengineering, #partdesign #arburg,#kunststofftechnik #kunststoffe ,#seminar, #kunststoffindustrie, #polymers,#moldmaking, #moulding,#mouldmaking,#mouldmaker

"Material Flow During Packing" www.kruseanalysis.com www.krusetraining.com www.molding-expert.com The packing stage is a crucial phase in the injection molding process, where precise pressure control is essential. This pressure directly influences the density of the plastic part, as well as the molded-in stresses, sink marks, voids, shrinkage, and final dimensions. A thorough understanding of how the material flows and behaves during packing helps refine the pressure profile, leading to better outcomes. A vital aspect of this refinement is evaluating and optimizing in-cavity pressure by analyzing cavity pressure curves. A smoother pressure curve without spikes and dips contributes to greater consistency and precision in the molded part, ensuring consistency and accuracy in production. #injectionmolding, #plasticsindustry, #moldmaking, #molding, #moldingdefects #plasticinjectionmolding, #plastics, #plasticsengineering, #molddesign, #partdesign, #moldex3d, #Spritzguss, #plastics, #plasticinjectionmolding, #plasticsengineering, #partdesign #arburg,#kunststofftechnik #kunststoffe ,#seminar, #kunststoffindustrie, #polymers,#moldmaking, #moulding,#mouldmaking,#mouldmaker

"Material Flow During Packing" www.kruseanalysis.com www.krusetraining.com www.molding-expert.com The packing stage is a crucial phase in the injection molding process, where precise pressure control is essential. This pressure directly influences the density of the plastic part, as well as the molded-in stresses, sink marks, voids, shrinkage, and final dimensions. A thorough understanding of how the material flows and behaves during packing helps refine the pressure profile, leading to better outcomes. A vital aspect of this refinement is evaluating and optimizing in-cavity pressure by analyzing cavity pressure curves. A smoother pressure curve without spikes and dips contributes to greater consistency and precision in the molded part, ensuring consistency and accuracy in production. #injectionmolding, #plasticsindustry, #moldmaking, #molding, #moldingdefects #plasticinjectionmolding, #plastics, #plasticsengineering, #molddesign, #partdesign, #moldex3d, #Spritzguss, #plastics, #plasticinjectionmolding, #plasticsengineering, #partdesign #arburg,#kunststofftechnik #kunststoffe ,#seminar, #kunststoffindustrie, #polymers,#moldmaking, #moulding,#mouldmaking,#mouldmaker

"Material Flow During Packing" www.kruseanalysis.com www.krusetraining.com www.molding-expert.com The packing stage is a crucial phase in the injection molding process, where precise pressure control is essential. This pressure directly influences the density of the plastic part, as well as the molded-in stresses, sink marks, voids, shrinkage, and final dimensions. A thorough understanding of how the material flows and behaves during packing helps refine the pressure profile, leading to better outcomes. A vital aspect of this refinement is evaluating and optimizing in-cavity pressure by analyzing cavity pressure curves. A smoother pressure curve without spikes and dips contributes to greater consistency and precision in the molded part, ensuring consistency and accuracy in production. #injectionmolding, #plasticsindustry, #moldmaking, #molding, #moldingdefects #plasticinjectionmolding, #plastics, #plasticsengineering, #molddesign, #partdesign, #moldex3d, #Spritzguss, #plastics, #plasticinjectionmolding, #plasticsengineering, #partdesign #arburg,#kunststofftechnik #kunststoffe ,#seminar, #kunststoffindustrie, #polymers,#moldmaking, #moulding,#mouldmaking,#mouldmaker

A Smooth Transition to the Packing Phase www.kruseanalysis.com / www.krusetraining.com / www.molding-expert.com When a molding machine switches from the filling phase to the first stage of packing pressure, the internal cavity pressure typically increases. During the filling phase, molten material is injected into the mold cavity at a high velocity, gradually building up pressure as the cavity fills. However, once the filling phase ends and the machine transitions to the first packing stage, additional material is injected at a lower speed to compensate for shrinkage and ensure the cavity is fully packed. This results in a rise in cavity pressure as the material densifies and compresses the molten material inside the cavity. The transition from a speed-controlled phase to a pressure-controlled phase should be accomplished without pressure spikes or dips. The goal is a smooth transition. The pressure increase is crucial in ensuring that the final part has the correct dimensions and surface quality. #injectionmolding, #plasticsindustry, #moldmaking, #molding, #moldingdefects #plasticinjectionmolding, #plastics, #plasticsengineering, #molddesign, #partdesign, #moldex3d, #Spritzguss, #plastics, #plasticinjectionmolding, #plasticsengineering, #partdesign #arburg,#kunststofftechnik #kunststoffe ,#seminar, #kunststoffindustrie, #polymers,#moldmaking, #moulding,#mouldmaking,#mouldmaker

A Smooth Transition to the Packing Phase www.kruseanalysis.com / www.krusetraining.com / www.molding-expert.com When a molding machine switches from the filling phase to the first stage of packing pressure, the internal cavity pressure typically increases. During the filling phase, molten material is injected into the mold cavity at a high velocity, gradually building up pressure as the cavity fills. However, once the filling phase ends and the machine transitions to the first packing stage, additional material is injected at a lower speed to compensate for shrinkage and ensure the cavity is fully packed. This results in a rise in cavity pressure as the material densifies and compresses the molten material inside the cavity. The transition from a speed-controlled phase to a pressure-controlled phase should be accomplished without pressure spikes or dips. The goal is a smooth transition. The pressure increase is crucial in ensuring that the final part has the correct dimensions and surface quality. #injectionmolding, #plasticsindustry, #moldmaking, #molding, #moldingdefects #plasticinjectionmolding, #plastics, #plasticsengineering, #molddesign, #partdesign, #moldex3d, #Spritzguss, #plastics, #plasticinjectionmolding, #plasticsengineering, #partdesign #arburg,#kunststofftechnik #kunststoffe ,#seminar, #kunststoffindustrie, #polymers,#moldmaking, #moulding,#mouldmaking,#mouldmaker

A Smooth Transition to the Packing Phase www.kruseanalysis.com / www.krusetraining.com / www.molding-expert.com When a molding machine switches from the filling phase to the first stage of packing pressure, the internal cavity pressure typically increases. During the filling phase, molten material is injected into the mold cavity at a high velocity, gradually building up pressure as the cavity fills. However, once the filling phase ends and the machine transitions to the first packing stage, additional material is injected at a lower speed to compensate for shrinkage and ensure the cavity is fully packed. This results in a rise in cavity pressure as the material densifies and compresses the molten material inside the cavity. The transition from a speed-controlled phase to a pressure-controlled phase should be accomplished without pressure spikes or dips. The goal is a smooth transition. The pressure increase is crucial in ensuring that the final part has the correct dimensions and surface quality. #injectionmolding, #plasticsindustry, #moldmaking, #molding, #moldingdefects #plasticinjectionmolding, #plastics, #plasticsengineering, #molddesign, #partdesign, #moldex3d, #Spritzguss, #plastics, #plasticinjectionmolding, #plasticsengineering, #partdesign #arburg,#kunststofftechnik #kunststoffe ,#seminar, #kunststoffindustrie, #polymers,#moldmaking, #moulding,#mouldmaking,#mouldmaker

This is a key factor in a capable process development. Understanding the correct transfer position will help to create the optimum pack sequence and gate seal. This provides for a consistent product to be produced.