Plastics technology january 1971 vol 17 no 1 the voice of the manufacturing authority riley malcolm w editor on amazoncom free shipping on qualifying offers plastics technology january 1971 vol 17 no 1 the voice of the manufacturing authority. Plastics technology february 1971 vol 17 no 2 the magazine of process production manufacturing engineering riley malcolm w editor on amazoncom free shipping on qualifying offers plastics technology february 1971 vol 17 no 2 the magazine of process production manufacturing engineering. No ones 2020 plans survived the pandemic unscathed including those of plastic molding technology inc but this injection molders vision of how it would continue to thrive as it approaches its fifth decade was simply deferred not denied. Figure 32 a nominal stress strain diagram b typical moduli values quoted for plastics 310 plastics technology handbook downloaded by 10398104 at 0050 28 feb 2021 for 9781315155876 chapter3 101201 9781315155876 3 fracture at low strains and the stress strain curve is followed no further than to some point below the knee such as point 1 ultimatestrengthelongation . Many in the manufacturing world experienced first hand how agile and efficient 3d printing is when companies began to print products to combat the covid 19 pandemic custom molder evco company expanded its 3d printing capabilities during this time to help produce parts quickly demand for building