Plastics Molding & Manufacturing

Foreword thumb|Portrait Images of John Wesley Hyatt, pioneer of injection moulding Many of the modern products that are a part of everyday life have gone unnoticed because they are commonly used until little thoughts are given to their existence. Have a look around in your home , workplace and such and probably you will find many things are made from plastics from small toys to the automobiles. In short, plastic play a vital role in the modern world. The first injection moulding was invented by John and Isaiah Hyatt in 1872. The earliest of injection moulding resembles a large hypodermic needles with heated cylinder on back which forces the heated gooey materials into the awaiting mould. Nowadays, the technology have matured and allowed for different formulations and techniques for injection moulding. Injection moulding method are suitable if there is a large number of parts are to be produced. The only disadvantages are the initial start up costs especially the injection moulding machine as well as tooling for the mould. Below are the advantages of using plastic injection moulding: High volume of mass productions rate can be achieved Repeatibility of the injection moulded parts with high tolerances Minimal material loss as the runner can be regrind to be used as recycled materials Wide range of materials can be available for specific applications Labour costs can be saved as for most automated injection moulding with robotic pickup arms: 1 operator can operate 4 injection moulding Therefore from this Handbook of Plasting Molding and Manufacturing, it is hope that you will gain an quick overview on the plastic moulding and manufacturings. Chapter 1: A Brief History of Plastic Manufacturing frameless|US114945 - Patents for Injection Moulding by John Wesley Hyatt (Diagram 1) In Chapter 1, we would learn some of the major contributions by those brilliant man that advance the plastic fields as the current stages today The Brief History of the Plastics 75% Dec 30,2016 Chapter 2: Type of Plastic Process frameless|Injection Molding In the chapter 2, we will learn types of plastic moulding . Every plastic components that are moulded needs different type of manufacturing process for specific applications Type of Plastic Moulding Process 75% Dec 30, 2016 Chapter 3:Plastic Material frameless|Plastic pellets In the chapter 3, we will learn what are the plastics are. What is plastic ? Plastic Moulding Charactheristic Plastic Additives Chapter 4:Injection Moulding Machine frameless|Injection moulding machine In the chapter 4, we will learn the few major parts which make the injection moulding machine Clamping System Moulding System Injection System Chapter 5: Moulds for plastics frameless|Mold1 The moulds and the mould making operation are one of the most important parts of the injection moulding process Moulds for plastic materials Mouldmaking operations Moulds costing Mould design Chapter 6:Injection Mold Cycles frameless| In each injection molding cycles, there are 4 phases namely: Clamping Phase Injection Phase Cooling Phase Ejection Phase Chapter 7:Injection Mould Process Control frameless|Quality Control on the moulded parts typical graphs In Chapter 6, we will learn the key parameters to ensure the moulded plastics is of consistent quality Temperature Control Pressure Control Position Control Time Control Quiz : Plastic Moulding Process Control Chapter 8:Defects Occurs In Plastic Moulding Process frameless|Co-injection (sandwich) molded part In Chapter 7, the common defects for moulding process usually causes from machine, mold, material and man (operator). In this section, we will learn the causes of these defects as well as solutions to solve this problems. Plastic Moulding Defects 100% Feb 11 ,2017 Role of Operators 25% Feb 18 ,2017 Quiz : Plastic Moulding Defects 25% Engineering