Design & Technology (9-1) - 0979 CIE

Joining

Gbogbo ọrọ náà

Open out a cereal box, a perfume carton or a child's pop-up book and you are looking at the joining decisions a graphic-products designer made long before the printing was even chosen. A net of card becomes a rigid box only when its faces are held together, and the way they are held - glued flap, tucked tab, slotted joint or a riveted fastener - decides whether the product is permanent or can be flat-packed, whether a customer can reseal it, and whether it survives a drop from a supermarket shelf.

This note works through the joining methods you must be able to select and justify for paper, card and board products: adhesives of different kinds, the integral card joints (slots, arrow tabs and flaps) that need no glue at all, pre-manufactured components such as eyelets and bindings, and mechanical fasteners. For each method you will learn what it is, when it is the right choice, and the trade-off between a permanent join and a temporary one.

Ebumnobi

  1. select and use appropriate methods of permanently or temporarily joining materials, including: - adhesives - slots, arrow tabs and flaps - pre-manufactured components - fasteners.

Akọmọ Ojú-ẹkọ

Every joining choice starts with one question: does this join need to come apart again? A permanent join is meant to last for the life of the product. The glued side seam of a cereal box, the perfect-bound spine of a paperback and the laminated layers of a bus pass are all permanent: you cannot separate them without damage. A temporary join is designed to be opened, closed, or taken apart and reassembled. The tucked lid of that same cereal box, the treasury tag through a set of punched report sheets and the press-stud on a card wallet are all temporary.

Ọ dị na ngwa Green Bridge

Budata ngwa Green Bridge CBT na ekwentị maọbụ kọmputa gị iji nweta akwụkwọ ndụmọdụ zuru oke, ajụjụ mmụta, na ndị ọzọ.

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Ayẹwo Ẹkọ

Ekele diri gi maka imecha ihe karịrị na Joining. Ugbu a na ị na-enyochakwa isi echiche na echiche ndị dị mkpa, ọ bụ oge iji nwalee ihe ị ma. Ngwa a na-enye ụdị ajụjụ ọmụmụ dị iche iche emebere iji kwado nghọta gị wee nyere gị aka ịmata otú ị ghọtara ihe ndị a kụziri.

Ị ga-ahụ ngwakọta nke ụdị ajụjụ dị iche iche, gụnyere ajụjụ chọrọ ịhọrọ otu n’ime ọtụtụ azịza, ajụjụ chọrọ mkpirisi azịza, na ajụjụ ede ede. A na-arụpụta ajụjụ ọ bụla nke ọma iji nwalee akụkụ dị iche iche nke ihe ọmụma gị na nkà nke ịtụgharị uche.

Jiri akụkụ a nke nyocha ka ohere iji kụziere ihe ị matara banyere isiokwu ahụ ma chọpụta ebe ọ bụla ị nwere ike ịchọ ọmụmụ ihe ọzọ. Ekwela ka nsogbu ọ bụla ị na-eche ihu mee ka ị daa mba; kama, lee ha anya dị ka ohere maka ịzụlite onwe gị na imeziwanye.

  1. Which joining method is permanent and hidden down the side seam of a typical card carton? A. A tuck-in flap B. A glued glue-flap C. A press stud D. A treasury tag Answer: B
  2. Why is spray mount, rather than PVA, usually chosen to mount a glossy photographic print flat? A. PVA is more expensive B. PVA is water-based and would cockle (wrinkle) the paper C. Spray mount is permanent and PVA is not D. PVA cannot stick paper to board Answer: B
  3. What is the special feature of an arrow (locking) tab? A. It must be glued in place B. Its barbed head springs open behind a slot so it cannot pull back out C. It can only be used on metal D. It dissolves in water Answer: B
  4. A workshop manual must lie completely flat and fold back on itself. Which binding is most suitable? A. Perfect binding B. Saddle stitching C. Spiral or comb binding D. A single staple in the corner Answer: C
  5. Which of these is a temporary joining method for card? A. A glued glue-flap B. An eyelet/rivet C. A press stud (popper) D. Epoxy resin Answer: C

Ọ dị na ngwa Green Bridge

Budata ngwa Green Bridge CBT na ekwentị maọbụ kọmputa gị iji nweta akwụkwọ ndụmọdụ zuru oke, ajụjụ mmụta, na ndị ọzọ.

Akwụkwọ ndụmọdụ zuru oke nwere eserese
Onye inyeaka mmụta AI
Mụọ n'ụzọ na-enweghị ịntaneti, oge ọbụla, ebe ọbụla
Ọ dị na Android, Windows, macOS, na Linux

Ọ dị na ngwa Green Bridge

Budata ngwa Green Bridge CBT na ekwentị maọbụ kọmputa gị iji nweta akwụkwọ ndụmọdụ zuru oke, ajụjụ mmụta, na ndị ọzọ.

Akwụkwọ ndụmọdụ zuru oke nwere eserese
Onye inyeaka mmụta AI
Mụọ n'ụzọ na-enweghị ịntaneti, oge ọbụla, ebe ọbụla
Ọ dị na Android, Windows, macOS, na Linux

Meecha Ajụjụ Ule Ọmarịcha

Ị chọrọ ime ajụjụ ule ọmarịcha gbasara Joining? Budata ngwa Green Bridge CBT iji nweta ajụjụ ule ọmarịcha na nyocha zuru ezu gbasara isiokwu a.

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