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lamination

lam-i-NEY-shuhn /ˌlæmɪˈneɪʃən/

nounC1TOEFL

IndustrialTechnical

The process of bonding multiple layers of material together to form a single, composite sheet.

In food packaging, this involves combining different films (like plastic, aluminum foil, and paper) using adhesives or heat to create a high-performance barrier.

The story behind the word. The Latin word 'lamina' referred to any thin metal plate or leaf. For centuries, woodworkers used 'veneering' (a form of lamination) to apply fine wood layers to furniture. In the 20th century, the process was adapted to plastics and foils to create the multi-layered films that protect modern packaged foods.

Word relationships

layering: Layering is a general term for placing things on top of one another, while lamination specifically implies permanently bonding those layers together under pressure or heat.
bonding: Bonding is the joining of materials, which could be done at a single point, whereas lamination is a continuous, surface-to-surface union.

delamination: The failure of a laminated material, where the bonded layers begin to separate from one another.

Commonly confused with

coextrusion: Coextrusion squeezes multiple layers of molten plastic through a single die at the same time, while lamination bonds already-solidified films together.

Word family

laminate (verb/noun): To bond layers together; a material constructed by bonding layers.
laminated (adjective): Composed of layers bonded together.

Collocations

lamination process
extrusion lamination
adhesive lamination
laminated film

Example sentences

"Lamination of foil and plastic provides an excellent barrier against light, oxygen, and moisture, which is essential for preserving sensitive snack foods." Packaging engineering handbook

Memory hook

Think of 'Lamb' in 'Lamination'—imagine a lamb wearing layers of different colored sweaters bonded together to stay warm and dry. Lamination bonds the layers tight, keeping out the air and light.

When not to use

Do not confuse with simple coating or painting; lamination always involves distinct, pre-formed layers bonded together.

Fun facts

A typical potato chip bag uses a laminated film with up to nine distinct layers, including a layer of aluminum that is 100 times thinner than a human hair.

Related words

barrier, permeability, migration

Explore more words

wrapper, adhesive, Polymerization, interfacing, stabilizer, composite