Man-Made Fibres

Read page define: dope (I will give this to you) spinneret (draw a picture) extrude denier The dope solution is extruded through the spinneret

How common are they? Synthetic fibers account for about ½ of all fiber usage,Synthetic fibers account for about ½ of all fiber usage, The most common are nylon polyester acrylic polyolefin

A basic timeline: Rayon (1910) (artificial, not synthetic)Rayon (1910) (artificial, not synthetic) Acetate (1924) (artificial, not synthetic)Acetate (1924) (artificial, not synthetic) Nylon (1939)Nylon (1939) Polyester (1953)Polyester (1953) AcrylicAcrylic OlefinOlefin

Rayon Made from regenerated wood pulpMade from regenerated wood pulp Fibres are dissolved andFibres are dissolved and reformed using the extrusion process But will it burn???????

Rayon continued What can you say about rayon from the picture? Known as mother-in-law silk or artificial silk- why do you think this fibre had important military applications?Known as mother-in-law silk or artificial silk- why do you think this fibre had important military applications?

Nylon a synthetic fabric made from petroleum products developed as an alternative to silk, although it quickly became unavailable to civilian consumers, because nylon was used extensively during the war.a synthetic fabric made from petroleum products developed as an alternative to silk, although it quickly became unavailable to civilian consumers, because nylon was used extensively during the war.

Nylon light weight,light weight, incredible tensile strength,incredible tensile strength, durability,durability, resistance to damageresistance to damage takes dye easily,takes dye easily,

Polyester made from polymers. The most commonly used fibre today.made from polymers. The most commonly used fibre today. –resilient, –quick drying, –resistant to damage from mold and mildew, –easy to wash, –hold forms well. –highly flammable

Polyolefin Not used for apparelNot used for apparel

Extruded filaments Extruded filaments are round if the spinneret holes they are extruded through are round.Extruded filaments are round if the spinneret holes they are extruded through are round. This makes for really smooth/shiny fibres. Often the holes are altered toOften the holes are altered to reduce smoothness/shine. reduce smoothness/shine.Why?

Crimping and texturizing Why bother?Why bother?

So why cut filaments up into staples?

Use your text to define: WickingWicking MicrofibreMicrofibre

An additional note on: microfibres refers to synthetic fibres that measure less than one denier.refers to synthetic fibres that measure less than one denier. used to create non-woven, woven and knitsused to create non-woven, woven and knits used for apparel, upholstery, industrial filters and cleaning products…..used for apparel, upholstery, industrial filters and cleaning products…..

They can be engineered to give: –softness, –durability, –absorption, –wicking abilities, –water repellency, –electrodynamics, –filtering capabilities.

Fibre Qualities you want to advertise: Cotton:Cotton: COMBEDCOMBED KIND OR QUALITYKIND OR QUALITY Wool:Wool: WORSTEDWORSTED KIND OR QUALITYKIND OR QUALITY Man-made Fibres:Man-made Fibres: DENIERDENIER TRADEMARK NAMETRADEMARK NAME WICKING PROPERTIESWICKING PROPERTIES