Sabtu, 07 April 2018

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Polyurethane laminate (PUL, thermal stretch, fuzzy rubber) is a compound fabric made by laminating a cloth fabric to one or both sides of a thin film of polyurethane. Polyurethane laminated fabrics have a wide range of applications in medical, automotive and garment uses.

Most PUL fabric is made by laminating lightweight polyester interlock knit fabric to a 1 mil thick film of polyurethane. There are two processes used for lamination: solvent lamination, which fuses the fabric and polyurethane film into a single monolithic fabric, and hot melt, which uses heat-activated glue to adhere the fabrics together.


Video Polyurethane laminate



Use

PU laminate cloth is waterproof, breathes and stretches somewhat, and is soft and flexible. It can usually be machine-washed and dried, and cleaned with dilute bleach or alcohol.

PU fabric is useful as a wind and/or water barrier in the construction of fluid-splash protecting garments, shower curtains, and outerwear clothing. It is used in watersports equipment. It is used for upholstery, especially in cars and restaurants.

Because it can be readily cleaned and sterilized, PUL is used for medical bedding, mattress protectors, reusable incontinence products, nappies, wet bags, and cloth menstrual pads.


Maps Polyurethane laminate



Materials and degradability

There are many different polyurethane blends and resin types, which vary in durability, resistance to heat, ambient humidity, and light, and the maximum temperature they will stand (some, for medical use, are autoclavable). Resistance is measured by accelerated aging in a harsh controlled environment; the number of weeks survived is expressed as a hydrolysis resistance in units of years (expected under normal conditions).

If PUL is kept wet for a long time, it disintegrates into the water and sticks to itself, though it will probably go mouldy first. If the polyurethane starts delaminating from the fabric, it may be possible to relaminate it with care and a hot iron. If the PU coating has decayed, it can be replaced.


Waterproof Polyurethane Laminate Fabric - PUL - for Sew-It ...
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See also

  • Waterproof fabric
  • Durable water repellent
  • Gore-Tex
  • SympaTex

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References


Source of the article : Wikipedia

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