Blow moulding product design

The inner container is a straightforward blow moulding. The design and development interest in this product is centred on the outer protective vessel and what follows is principally concerned with this. 

Rosato, D.V. ed. Rosato, D.V. (ed.) Blow Moulding Handbook, Hanser, Munich (1989). Hepburn, C. Polyurethane Elastomers (ch 6-RIM) Applied Science Publishers, London (1982). Martin, L, Pultrusion Ch 3 in Plastics Product Design Handbook - B ed by E. Miller, Dekker Inc, New York (1983). 

Clarified PP preforms are available that enable PP bottles to be made at lower total production costs while still achieving excellent transparency, using standard injection stretch blow moulding machines. This has required specialised technology developed by companies like PPaM International, who designed their system for symmetrical bottles to contain noncarbonated water, juices and drinks. Comparable products could previously only have been made using PET. 

Renaud [15] has reviewed developments by the DuPont European Technical Centre in the design and production of automotive components using advanced blow moulding techniques. Examples are presented of automotive hoses manufactured in DuPont s engineering plastics and Hj rel polyesters elastomers. 

Blow moulding is the ideal production method for all designs of fuel tank up to a capacity of around 100 litres, provided the numbers required justify... 

Under this heading of manipulation is included any process whereby the solid plastics material, usually in powder or nib form, is converted to the finished end product. It embraces moulding by compression, transfer, injection or extrusion, blow moulding, rotational moulding, and any process whereby a layer of comminuted plastics material is heat-sintered into a finished unit. In all of them the product designer has to work very closely with the manufacturer not only of the plastics material, but also with the mould maker and to an ever-increasing extent with the maker of the moulding machine. 

Blow moulding finite element simulation softwares are designed to assist process developers and part designers in the industry to save time and reduce cost of production. These softwares provide several capabilities such as prediction of wall thickness distribution, stress and extension ratios of the final product based on the specified processing parameters before the actual production. 

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