and 2. MAEKAWA, H. HAMADA, M. IWAMOTO, &A. UKAI Kyoto Institute of Technology Sakyo-ku, Kyoto, 606 JapanWeldlines are fatal defects in many injection moldings of thermosetting resins and thermoplastics. Significant strength reduction by weldlines in thermoplastics is caused by poor adhesion, molecular orientation, and a V-notch effect. These factors have been little investigated in detail, in spite of being well known. In the present article, the V-notch effect on strength is discussed for two types of thermo…
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