Influence of Talc Concentration on Angular Deformation in Injection Molded Parts of Talc and Rubber Filled Polypropylene

Injection molding has faults, or sinks, caused by the shrinkage ofmaterials. Sinks should be inhibited since they greatly affect the dimensions of moldings. In this study, a mold that allows visual observation is employed, and the sink initiation process is analyzed and predicted based on the results of that analysis. This mold has two sections, one flat and one curved. The difference between the deformations in the flat and curved sections is investigated. Methods of inhibiting sinks are considered from the results of the analysis and injection molding experiments. Packing pressure is found to have a great effect on sinks.

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Investigation of Flow and Sink Initiation Process in Mold Shapes in Injection Molding

Kaburagi

Kurose

Ogawa³

et al. 2015

Int. J. Automation Technol.

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Mechanism for Angular Deformation of L-shaped Specimens —Influence of Filling Material and Shrinkage Factor—

Furuhashi¹,

Aoki²,

Okabe³

et al. 2010

Seikei kako

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Influence of Anisotropic Thermal Expansion on Angular Deformation of Injection Molded L-Shaped Parts

Furuhashi

Okabe

Aoki³

et al. 2011

Seikei kako

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Influence of Talc Concentration on Angular Deformation in Injection Molded Parts of Talc and Rubber Filled Polypropylene

Cited by 3 publications

References 13 publications

Investigation of Flow and Sink Initiation Process in Mold Shapes in Injection Molding

Investigation of Flow and Sink Initiation Process in Mold Shapes in Injection Molding

Mechanism for Angular Deformation of L-shaped Specimens —Influence of Filling Material and Shrinkage Factor—

Influence of Anisotropic Thermal Expansion on Angular Deformation of Injection Molded L-Shaped Parts

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