Ldpe
POLYSTYRENE
Project Report
By
Pramod. M. Munjgude (PG/M/090021)
Guided By
Prof. Mrs. Sucheta. B. Avasthi
Packaging technology
[pic]
INDIAN INSTITUTE OF PACKAGING
ANDHERI (E), MUMBAI
September 2009
ACKNOWLEDGEMENT
I express my sincere gratitude to my guide Prof. Mrs. Sucheta B, Indian Institute of Packaging, Mumbai for her valuable guidance and support for the completion of this report.
I am thankful to Indian institute of Packaging and all teaching and non – teaching staffs of the Institute for their valuable suggestions and support.
I thank all my classmates and seniors for guiding me throughout this project work.
TABLE OF CONTENTS
Chapter Title Page No.
1 Introduction 1
2 Structure and Properties 3
3 Grades of polystyrene 5
4 Forms produce 7
5 Processing of polystyrene 10
6 Health and fire hazards 11
7 Disposal and environmental issues 12
8 Applications 13 9 Advantages and disadvantages of polystyrene
10 References
ABSTRACT
Polystyrene is one of the most widely used kinds of plastic. Polystyrene is a thermoplastic substance, which is in solid (glassy) state at room temperature, but flows if heated above its glass transition temperature (for molding or extrusion), and becoming solid again when cooling off. Pure solid polystyrene is a colorless, hard plastic with limited flexibility. It can be cast into molds with fine detail. Polystyrene can be transparent or can be made to take on various colors.
Solid polystyrene is used, for example, in disposable cutlery, plastic models, CD and DVD cases, and smoke detector housings. Products made from foamed polystyrene are nearly ubiquitous, for example packing materials, insulation, and foam drink
Project Report
By
Pramod. M. Munjgude (PG/M/090021)
Guided By
Prof. Mrs. Sucheta. B. Avasthi
Packaging technology
[pic]
INDIAN INSTITUTE OF PACKAGING
ANDHERI (E), MUMBAI
September 2009
ACKNOWLEDGEMENT
I express my sincere gratitude to my guide Prof. Mrs. Sucheta B, Indian Institute of Packaging, Mumbai for her valuable guidance and support for the completion of this report.
I am thankful to Indian institute of Packaging and all teaching and non – teaching staffs of the Institute for their valuable suggestions and support.
I thank all my classmates and seniors for guiding me throughout this project work.
TABLE OF CONTENTS
Chapter Title Page No.
1 Introduction 1
2 Structure and Properties 3
3 Grades of polystyrene 5
4 Forms produce 7
5 Processing of polystyrene 10
6 Health and fire hazards 11
7 Disposal and environmental issues 12
8 Applications 13 9 Advantages and disadvantages of polystyrene
10 References
ABSTRACT
Polystyrene is one of the most widely used kinds of plastic. Polystyrene is a thermoplastic substance, which is in solid (glassy) state at room temperature, but flows if heated above its glass transition temperature (for molding or extrusion), and becoming solid again when cooling off. Pure solid polystyrene is a colorless, hard plastic with limited flexibility. It can be cast into molds with fine detail. Polystyrene can be transparent or can be made to take on various colors.
Solid polystyrene is used, for example, in disposable cutlery, plastic models, CD and DVD cases, and smoke detector housings. Products made from foamed polystyrene are nearly ubiquitous, for example packing materials, insulation, and foam drink