Manufacturing with Plastics (Leaving Cert Engineering): Flashcards
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Calendering
Calendering
Process making flat sheets from thermoplastics/rubber via rollers
Billet in calendering
Billet in calendering
Lump or block of heated, softened polymer
Key principle of calendering
Key principle of calendering
Progressive thinning through successive rollers
Materials used in calendering
Materials used in calendering
Thermoplastics and rubber
What happens as material passes through rollers
What happens as material passes through rollers
Becomes progressively flatter and thinner
Examples of calendered products
Examples of calendered products
Floor coverings, protective sheeting, industrial rubber mats
Final processing options for calendered sheets
Final processing options for calendered sheets
Wound onto roll or cut to length on conveyor belt
Key characteristic of calendered products
Key characteristic of calendered products
Uniform thickness across large areas
Essential equipment in calendering
Essential equipment in calendering
Series of heated rollers
Alternative to solid billet
Alternative to solid billet
Granulated polymer
State of material when fed into calendering
State of material when fed into calendering
Heated and softened
Product types suitable for calendering
Product types suitable for calendering
Thermoplastic sheets, rubber mats, flexible sheeting