What is the difference between solid, hollow and hollow conjugated fibres?

What is the difference between solid, hollow and hollow conjugated fibres?

There are two characteristics that define the behaviour of a fibre: crimp and section.

Crimp refers to waves or curves introduced into the fibre, by unit of length. The objective is to give the fibre cohesion and volume and allow it to card. The more pronounced the crimp, the more resilience and resistance to compression the fibre will have. There are three types of crimp: sharp, waved, and helical.

The section is the interior or the profile of a filament of fibre. A fibre can have a solid or hollow section, where the hollow ones can have one or more channels. The hollow fibres can also be combined, which means it can have a mix of crimps.


Solid fibres are cheaper and rougher to the touch.

Hollow fibres have more volume, strength, and resilience tan solid fibres. They also provide better thermal insulation because the centre of the fibre retains air.

Hollow fibers can be simple or conjugated. Simple hollow fibers, known as hollow monofilaments, have a single shell that encapsulates a cavity in the center. Conjugated hollow fibers have a hollow section and a mixture of crimps that provide volume, lightness, softness to the touch, elasticity, and great recovery ability. They are composed of dozens of hollow filaments with circular cross-sections and can be manufactured with various diameters, ranging their cavity from wider to narrower.


What is the best solution?

Solid fibers can be used across all industries. They tend to be rougher, so they are not popular in the bedding industry.

Hollow fibres are very popular in the bedding industry:

  • Economical - are an affordable and high-quality material.
  • Easy to maintain they are mostly washable, easy to dry and do not adhere to feathers.
  • Lightweight – they are a soft and light material.
  • Breathable – Hollow spaces allow air to circulate for better thermal comfort at night.



Eurospuma can help!

We have over 30 types of nonwovens in our portfolio, easily organized for you. We work with solid and hollow fibres, hollow fibres with four channels, hollow conjugated fibres and siliconized fibres. We divide our portfolio into two groups.


Eurospuma® Essentials
The Eurospuma ® Essentials cover the most common applications in the industry, such as clothing, padding for duvets and cushions, filters, backrests, seats, among others. In the Essentials group we have three brands: Eurospuma® Standard, Eurospuma® Advance and Eurospuma® Advance +.


Innovations ® Eurospuma
Eurospuma® technologies were created for the pioneers, those who are not afraid to experiment for greater comfort. In the Innovations group, we have three brands: Ingeo™, Quallofil ® and Spring. Each brand represents a technology that provides different sensations of comfort such as optimized volume, materials of plant origin and spring effect, among others.

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