Recycling plastic waste can help reduce plastic waste, which is the world’s largest problem. The first solution is a plastic crusher machine, which converts plastic packaging into pellets, especially for plastics made from polyester, which is often used in bottle packaging. An integral part of the crushing machine is the crushing blade, which determines the design and analysis of the blade. The finite element analysis method is widely used in engineering analysis. Its results can provide useful information for the analysis of manufacturing processes. A rectangular blade and a star-shaped blade are the two types to consider. The analytical results obtained on the blade of the crusher machine in the rectangular shape that was given loads by 200 N, 400 N, and 600 N are 1.285 × 103 N/m2, 2.570 × 103 N/m2, and 3.855 × 103 N/m2, respectively. We obtained the displacements are 1.080 × 10-6 mm, 2.160 × 10-6 mm, and 3.241 × 10-6 mm, respectively. The maximum von mises stress result on consecutive star-shaped blades are 8.890 × 102 N/m2, 1.778 × 103 N/m2, and 2.667 × 103 N/m2. The displacement obtained are 1.211 × 10-6 mm, 2.422 × 10-6 mm, and 3.633 × 10-6 mm. The results of this analysis indicate that for the star blade, the shape is better than for the rectangular blade at the same time, and for the star blade, the stress is smaller than for the rectangular blade. Based on this simulation, the safety factor is 15, which means that it is more than 1, which means that it is safe.
Drying is a mandatory process carried out after harvest or production. Direct drying is a traditional method that is still used today, but this method has drawbacks because it depends on the weather. Pests, the rainy season, and at night are obstacles experienced in this process. This dryer can help solve common solutions for manufacturers. A dryer coated with clear acrylic it can protect the produce from rain, dust, and pests. The solar panel functions as a power source for the temperature controller in the dryer. 40-50 C is the right temperature when drying, it is not recommended that temperatures exceed 50 because it can cause dry food ingredients outside. Incandescent lamps and mini fans are temperature control devices to stabilize the temperature inside with temperatures of 40 ̊ to 50 C. Incandescent lamps also allow manufacturers to dry at night so that the drying process can be shorter than usual. The result found by the dryer is that it has a cross-sectional area of 2100 cm2 with a maximum capacity of 13 pieces with a diameter of 7 cm. The drying rate with the sun reaches 0.6% per hour, and the energy needed by the sun for 10 hours of drying is 36288 kJ. The power that can be produced by solar panels is 100 watts with the electrical energy needed for 10 hours of drying with a controller of 3600J.
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