Feathers are collected from waterfowl such as geese and ducks. The fluffy, cotton-like tufts are called down.
They grow on the chest and belly areas of the bird and provide excellent insulation.
Feathers grow in greater quantities on other parts of the bird and provide elasticity and breathability. Down is mainly used for comforters, while feathers are used for pillows.
Feathers collected from farms go through a process of dust removal, washing, and drying before being refined. However, cleaned feathers are not enough on their own.
After refining the feathers, Iwata's special technology (Iozon α2) is used to remove impurities to the utmost degree, and the resulting material is used as the raw material for comforters and pillows.
Waterfowl feathers contain various impurities such as bird dander and oil. If these impurities remain, they can emit unpleasant odors and have a negative impact on health. To address this, Iwata uses a special technology called Iozone α2 to remove impurities through several stages of processing, achieving maximum purity. Additionally, the feathers are sterilized, deodorized, and sanitized during the process.
The feel of down products is determined not by the down ratio, but by the maturity of the down. The maturity of the down is determined by the size of each down ball.
Each hair of down is called a feather branch, and mature down has more of these branches. Even small, immature down can increase the down ratio if there are a lot of them, but such small down has low insulation and does not provide warmth or good sleeping comfort.
At Iwata, strict quality standards are set and only products that pass the inspection are used.
Only products that have passed laboratory tests are used.
Iwata has its own research institute, the Iwata Down Laboratory, which has supported Iwata's bedding production for many years. This laboratory carries out empirical research on bedding, including material analysis and product and technology development, and only highly safe materials that have passed the strict checks at this laboratory are used.
The fabrics are also very particular.
Generic down fabrics are resin-treated to prevent blowing out, so they could not be sun-dried or washed in water. Iwata has used its unique know-how to develop a fabric made from 100% natural cotton. Our technicians' eyes carry out meticulous checks to ensure perfect quality and delivery of our products.