Cutting/addition processes Flashcards

1
Q

define wasting processes

A

cutting/addition processes where part of the material is removed/disposed of after cutting+shaping in manufacture

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2
Q

describe the process of die cutting

A
  • the die consists of steel sharp blades (for cutting) round-edged blades (for creasing), and serrated blades (for perforated cuts)
  • the blades are selected+formed into the shape of the net
  • the die is mounted on a strong plywood base and pressed down into the card
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3
Q

describe the uses+benefits of die cutting

A
  • can cut through many layers at once - good for large-scale production
  • good for nets with complicated designs
  • however is expensive as you have to make blades to match your net
  • stencils, packaging nets
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4
Q

name small tools used for cutting/trimming (5)

A
  • metal-cased knife: tough materials (thick board/ balsa wood)
  • trimming knife: retractable blades for safety when not in use
  • perforation cutters: round blade which rotates as you push along, makes tear strips
  • circle cutters: arcs/circles in card/paper, diameter variable
  • scalpels: very sharp, precision cutting
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5
Q

describe the process of scoring +safety

A
  • draw a guideline in pencil, line up a metal ruler, run a (trimming) knife along the line
  • press lightly to avoid cutting through board underneath
  • use a scoreboard or thick board
  • ensures folds are straight/ neat/ accurate
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6
Q

describe materials that have been modified using chemicals for a specific purpose (6)

A
  • kraft paper has chemical treatment - makes it strong+ tear-resistant, creates a vapour barrier so used for food packaging for dry products (flour)
  • baking parchment treated with sulphuric acid - non-stick
  • greaseproof paper - changes qualities of fibres to make it less absorbent
  • pulp of paper towels mixed with resin - increases wet strength
  • solid white board is bleached then coated with wax - strong, thick, good printing surface, safe for direct contact w food
  • chemicals added to paper - add colour, enhance brightness
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7
Q

describe the process+ uses+ benefits of laminating

A
  • paper is sandwiched between two layers of plastic then heated to seal it together
  • quick, gives a shiny or matt finish, protects from damage, looks more professional
  • business cards, menus, posters
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8
Q

describe the process+ uses+ benefits of embossing

A
  • a shaped die is pushed into the back of the material to leave a raised impression on surface
  • draws attention to a certain bit of product, adds texture, appears high-quality
  • book titles, logos, patterns
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9
Q

describe the process+ uses+ benefits of foil blocking

A
  • metal foil is printed onto certain area of product using heat+pressure
  • draws attention to a certain area, appears high-quality
  • greetings cards, book titles, wrapping paper
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10
Q

describe the process+ uses+ benefits of UV flood varnishing

A
  • a varnish is applied to the surface of the paper then cured under UV light to dry
  • applied to the whole product
  • glossy/shiny/matt finish, protects products that are handled frequently, varnish cures quickly under UV so reduces production time, appears high-quality
  • business cards, magazine covers, playing cards
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11
Q

describe the process+ uses+ benefits of UV spot varnishing

A
  • a varnish is applied to the surface of the paper then cured under UV light to dry
  • applied to certain areas
  • glossy/shiny/matt finish, varnish cures quickly under UV so reduces production time, appears high-quality, draws attention to spot-varnished areas
  • business cards, book titles
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12
Q

state finishes applied to woods/timbers

A
  • paint varnish
  • stain
  • oil
  • wax
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