Product Variations

Textile

Stretch Energy
* The SPIEL name has been changed to StretchEnergy.

The product will be consolidated and rolled out globally under the new logo.

What is StretchEnergy?

StretchEnergy is a material made with ROICA functional yarn, which is designed to have an exothermic effect when stretching. As long as the material expands and contracts repeatedly, it will generate heat.

Temperature change due to heat generation by stretching

Use thermography to observe the temperature increase in the surface of the knit fabric when the knit fabric undergoes repeated expansion and contraction in an elastic recovery tester. (Comparison of assumed stretching when wearing garment)

(Left) StretchEnergy(Right) Conventional product

All data from measurements taken at the Asahi Kasei Corporation Product Science Institute

The mechanism of heat generation by stretching
(Difference from heat generation by absorbing moisture)
Heat generation
by stretching
Heat generation
When the ROICA fiber is stretched, entropy (molecular disorder) decreases and heat is emitted.
Heat generation
by absorbing moisture
Heat generation
Sweat and other water vapor released from the body are absorbed by special fibers and heat is emitted.
Sustained exothermic function

Repeated expansion and contraction generate and absorb heat The special knit design is devised to maximize the amount of heat generated and as long as the material expands and contracts repeatedly, it will generate heat. (Patent application completed)

Exothermic effect through movement

Comparison of temperature changes when doing knee bends while wearing sports tights

Wearing tights made
with StretchEnergy
Wearing
conventional tights

Before movement

Knee bends

All data from measurements taken at the Asahi Kasei Corporation Product Science Institute

StretchEnergy is a registered trademark (pending applications included) of Asahi Kasei Corporation.

Contact us

Yarn brand

DRLASTAN
Good for environment

Textile brand

Double construction knit
Specially Structured
Stretch Fabric
Stretch Energy
Fabrics,heat generating
by stretch

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ROICA™ Updates
ROICA Updates

ROICA is a trademark of Asahi Kasei Corporation for spandex / elastane fiber.

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