Parameter Optimization of Injection Molding of Polypropylene by using Taguchi Methodology

Kavade, Mukund V.; Kadam, Siddhi

doi:10.9790/1684-0444958

Cited by 20 publications

(7 citation statements)

References 8 publications

(14 reference statements)

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“…Sebagian besar peralatan cetakan injeksi saat ini masih menggunakan desain sekrup reciprocating satu sisi yang asli. Relay dan pengatur waktu pertama kali digunakan untuk mengatur proses injeksi pada 1950-an (Kavade, 2012).…”

Section: Injection Moldingunclassified

Pengaruh Variasi Injection Velocity Dan Packing Pressure Terhadap Kualitas Part Produk Injection Molding

Agus Supriyanto

2023

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Injection Molding adalah proses yang populer digunakan dalam pembuatan produk plastik karena kemampuannya menghasilkan geometri produk yang komplek dalam satu siklus. Tentunya diperlukan teknologi yang cukup baik dari segi mesin injeksi, injection molding, material, prosedur, dan personel agar dapat menghasilkan produk plastik sesuai dengan yang kita inginkan. Menggunakan pendorong, bahan termoplastik yang meleleh dipompa ke dalam cetakan berpendingin air selama proses pencetakan injeksi, menyebabkannya mengeras. Tujuan dari penelitian ini adalah Mengetahui pengaruh variasi injection velocitydan packing pressure terhadap kualitas Part Holder Filter. Hasil pengujian secara langsung diperoleh hasil Variasi ke 1 merupakan nilai variasi yang di produksi menggunakan mesin injection molding dengan menggunakan variasi parameter setting yaitu variasi injection velocity 25 m/s, dan packing pressure 10 Mpa. Hasil yang diperoleh dari variasi parameter setting ini menghasilkan part menjadi NG (No Good) short shot (kekurangan pengisian cairan material). Variasi ke 2 merupakan nilai variasi yang diproduksi menggunakan mesin injection molding dengan menggunakan variasi parameter setting yaitu injection velocity 35 m/s, dan packing pressure 20 Mpa. Hasil yang di peroleh dari variasi parameter setting ini mengahasilkan part ok (GOOD) sesuai dengan standard dan harapan konsumen. Variasi ke 3 merupakan nilai variasi yang di produksi menggunakan mesin injection molding dengan menggunakan variasi parameter setting yaitu injection velocity 45 m/s, dan packing pressure 30 Mpa. Hasil yang di peroleh dari variasi parameter setting ini mengahasilkan part menjadi over pack/kepadatan (NG).

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Section: Injection Moldingunclassified

Pengaruh Variasi Injection Velocity Dan Packing Pressure Terhadap Kualitas Part Produk Injection Molding

Agus Supriyanto

2023

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“…Teknik Injection moulding penyerapan air yang terjadi sangat sedikit. Hal ini disebabkan karena mesin injector pada teknik injection molding memiliki bagian mesin yang kompleks yang dapat memadatkan molekulmolekul dalam resin akrilik hingga tidak ada porus atau ruang kosong pada gugus resin akrilik, sehingga air yang masuk ke dalam molekul tersebut tidak berlebih dan dapat memperkecil terjadinya perubahan dimensi (Rimple, 2011;Kavade, 2012;Masthurah, 2013). Menurut penelitian Garechahi tahun 2014 diketahui bahwa pada perendaman resin akrilik di dalam air pada waktu 24 jam, 48 jam, dan 12 hari dengan teknik injection molding dan compression molding dihasilkan perbedaan yang signifikan yaitu, injection molding lebih baik daripada teknik compression muolding dikarenakan teknik injection moulding dapat memadatkan akrilik pada saat polimerisasi sehingga menghasilkan basis resin akrilik dengan dimensi yang stabil.…”

Section: Pembahasanunclassified

The Immersion of Acrylic Resin With Injection Moulding Technique on Loose Dentures Dimensional Change

2019

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Background: Acrylic resin is the most commonly used denture base material. One disadvantage is that it can absorb water that can cause changes in dimensions. Changes in the dimensions of acrylic resin are influenced by processing acrylic resin. At present injection molding techniques are known to be better than compression molding. Dimension changes due to water absorption occur in the first 7 days and interval intervals of up to 12 days. Purpose: this study was to determine whether immersion of acrylic resin with Injection molding techniques had an effect on changes in dimensions. Method: The study was conducted on acrylic resin test rods with a size of 25 mm x 25 mm x 5 mm. by using injection molding techniques. Acrylic resins are immersed in water for 24 hours, 48 hours and 12 days. Changes in dimensions are measured using a caliper with an accuracy of 0.01 mm. Statistical analysis was performed using the normality test, homogeneity test, and ANOVA test. Results: this study found that there was no change in dimensions of acrylic resin with water-immersed injection molding techniques 24 hours, 48 hours and 12 days. Conclusion: That immersion of acrylic resin in water at 24 hours, 48 hours, and 12 days with injection molding techniques did not affect changes in dimensions.

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“…The influence of two control parameters of the injection process is observed in the current work: temperature and pressure. According to numerous studies concerning the optimization of PP injection molding, the temperature and injection pressure have the greatest weight and influence on the mechanical properties and process improvement [ 13 , 14 , 15 , 16 ]. Seeger et al [ 17 ] studied the melting point under high pressure.…”

Section: Introductionmentioning

confidence: 99%

Tomographic and Tension Analysis of Polypropylene Reinforced with Carbon Fiber Fabric by Injection Molding

Wieczorowski,

Pereira,

Prado

et al. 2023

Materials

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The use of thermoplastic materials has had significant growth in recent years. However, with great mechanical requirements, thermoplastics have limitations to their use. To improve these restrictions, these materials are reinforced to obtain better properties. Polypropylene is one of the most versatile polymers and is used in almost all modern industries. Thus, the aim of this study is to create composite materials that offer performance for various industrial fields using carbon fiber fabric reinforcement, which is an inexpensive material widely used by the aerospace, automotive, and marine industries. The samples are produced by the over-injection molding of polypropylene. The investigation is focused on the impact of two critical control parameters in the injection molding process: temperature and pressure. Twelve experiments have therefore been considered, taking into account the combination of three factors: the presence or absence of carbon fiber fabric reinforcement, three levels of temperature (200 °C, 220 °C, and 240 °C), and two injection pressures (5000 kPa and 10,000 kPa). To evaluate the influence of these factors, three analyses were carried out: first, on the samples’ shrinkage using a portable metrology-grade 3D laser scanner; second, on the internal defects using computed tomography (CT); and third, on the mechanical properties with tensile tests. From the results obtained, it is observed that the mold shrinkage fell slightly when PP samples were reinforced with carbon fiber, with both materials (PP and carbon-fiber-reinforced PP) having linear behavior with temperature. It is also noticed that polypropylene behaves as a crystalline material when processed at higher temperatures and pressures. From tests on the mechanical properties, it is concluded that the mean yield strength of PP-CF for injection temperatures of 220 °C and 240 °C represents an increase of 43% compared to the non-reinforced material.

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Parameter Optimization of Injection Molding of Polypropylene by using Taguchi Methodology

Cited by 20 publications

References 8 publications

Pengaruh Variasi Injection Velocity Dan Packing Pressure Terhadap Kualitas Part Produk Injection Molding

Pengaruh Variasi Injection Velocity Dan Packing Pressure Terhadap Kualitas Part Produk Injection Molding

The Immersion of Acrylic Resin With Injection Moulding Technique on Loose Dentures Dimensional Change

Tomographic and Tension Analysis of Polypropylene Reinforced with Carbon Fiber Fabric by Injection Molding

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