Available online
Description
The programme centres on the work of David Harman Powell, MSIA, consultant in plastics at the School of Industrial Design, Royal College of Art, and design consultant to a leading plastics moulding... company. He sets out to examine the conceptual differences between designing in plastics and designing in traditional materials like metals or ceramics. In particular he takes us through the stages of redesigning a bin for dustless refuse collection. After looking at the original metal dustbin in use in Birmingham he builds up his design at the drawing board, selecting his manufacturing process and material, shows us the principles of mould making and demonstrates the actual bin production by injection moulding. Finally he watches his product put to test back in Birmingham.
The programme centres on the work of David Harman Powell, MSIA, consultant in plastics at the School of Industrial Design, Royal College of Art, and design consultant to a leading plastics moulding... company. He sets out to examine the conceptual differences between designing in plastics and designing in traditional materials like metals or ceramics. In particular he takes us through the stages of redesigning a bin for dustless refuse collection. After looking at the original metal dustbin in use in Birmingham he builds up his design at the drawing board, selecting his manufacturing process and material, shows us the principles of mould making and demonstrates the actual bin production by injection moulding. Finally he watches his product put to test back in Birmingham.
| Module code and title: | T100, The man-made world: a foundation course |
|---|---|
| Item code: | T100; 21 |
| First transmission date: | 11-06-1972 |
| Published: | 1972 |
| Rights Statement: | |
| Restrictions on use: | |
| Duration: | 00:22:27 |
| + Show more... | |
| Producer: | Colin Robinson |
| Contributor: | David Harman Powell |
| Publisher: | BBC Open University |
| Keyword(s): | Birmingham; Conceptual differences; Drawing board; Dustless refuse collection; Injection moulding; Maunfacturing process; Mould making; Redesigning a bin |
| Footage description: | Shots of plastic knives. Their design is discussed and both good and bad designs are shown. Shots of Birmingham dustman collecting steel dustbins. An excerpt from the Ministry of Housing and Local Government's Report on Refuse Collection is captioned. The report recommends use of plastic dustbins. Shots of a steel dustbin and of dustman collecting refuse. Design of the dust cart is looked at particularly the hydraulic lifter and dumper. Shot of the component parts of a metal dustbin laid out. The problem of simplifying the design is discussed. Reducing the numerous components of the metal dustbin to just two in the plastic dustbin discussed. Differences between blow moulding and injection moulding examined. Shots of plastic dustbins being manufactured by the injection moulding process. Criteria for choice of plastic type in the manufacture of dustbins given. Polypropane is chosen as the most suitable both from the point of its physical properties and costs. Shots of dustbins being moulded. Shots of a drawing board. Plastic dustbin design is sketched. Design of dustbin handles sketched on drawing board. Shot of a plastic dustbin handle. Commentary discusses the design features. Shots of drawing board. Lifting hook design on dustbins is sketched and discussed. Shot of cross section of dustbin base. Commentary points out the double curvature design. This provides both upward and downward shock resistance. Shot of a dustbin lid cross section. Design features are discussed. Problems encountered in moulding plastic dustbins examined. Shots of the moulding process. The moulding process is illustrated in an animated diagram. Several aspects of tool making are shown to illustrate the processes involved in producing a mould for a plastic dustbin. Shots of the cavity plate of an injection mould. Shots of a plastic dustbin mould. Its various components are pointed out. Shots of a plastic dustbin being moulded. Shots of animated diagram of an injection moulding machine to illustrate the injection moulding process. Diagram shows plastic being heated and injected into the mold. Injection moulding process shown in the machine itself. The finished plastic dustbin is compared with the criteria for plastic dustbins as set out in the Ministry report. Shots of dustman collecting dustbins. The plastic bin is compared with the metal bin. |
| Master spool number: | 6LT/70685 |
| Production number: | 00525_5009 |
| Videofinder number: | 5840 |
| Available to public: | no |
