What is inside a sofa togo? 3 Bountiful Secrets Behind the Best-Known French Design

The internal secrets of sofa togo
In 1973, French designer Michel Ducaroy launched this classic piece at Ligne Rose.Its shape is soft and elastic.Many people are curious when they sit on it for the first time.What exactly is hidden inside this structure that seems to have no wooden frame.
The structural core of the sofa togo
The interior of this product is entirely composed of high-density polyurethane foam, with no metal frame or wooden support.Its internal design is divided into three layers of foam of different densities.The bottom layer is of high density, used for stable support.The middle layer has a moderate density and serves as a transitional function.
The upper layer is made of soft foam to provide a enveloping feeling for the body.This multi-level structure enables it to maintain its shape while also adapting to the curves of the human body.Unlike the springs and wooden frames used in traditional furniture, this all-foam structure makes it lighter in weight and more compressible.At the same time, it reduces the use of metals in the production process, making it more environmentally friendly.

The comfort principle of sofa togo
The sense of comfort comes from the proportion of ergonomics and foam layering.The density and rebound coefficient of each layer of foam have been calculated.The high-density foam at the bottom layer is responsible for supporting the pressure on the lower back and waist, while the foam in the middle layer serves to buffer the sinking of the body.The topmost layer of soft foam can provide the body with a comfortable feeling of being surrounded.This progressive support structure can reduce fatigue after long periods of sitting or lying down.https://medium.com/@junhanfurniture/whats-inside-the-togo-sofa-the-science-of-comfort-hidden-in-foam-layers-a092d990fb29
The official technical data of Ligne Roset in France was once made public.The density of high-density foam is 48kgm, that of the middle layer is 38kgm, and that of the upper layer is 32kgm.Foams of different thicknesses are seamlessly bonded through a thermal cutting process and then wrapped with stretchable fabric to form distinctive pleats.
In a collector’s home in the suburbs of Paris, there is an early version produced in the early 1970s on display.Although nearly half a century has passed, the bubble still remains resilient and has not collapsed significantly.Polyurethane foam is not prone to moisture absorption and deformation under a sealed structure, and the tensile force distribution of the outer fabric is uniform.These two characteristics work together to enable the overall form to remain stable for a long time.FAQs
The same case from a design studio in Osaka, Japan.After purchasing the retro style, the designer replaced the fabric of the coat, only to find that the inside was almost intact.This also verifies that its skeletonless design is not fragile but a balanced system that is both gentle and firm.
The design significance of the sofa togo
Its emergence has changed people’s understanding of the concept of support.In the past, furniture pursued hardness and uprightness, while this piece of work emphasizes fluidity and fit.Designer Michel Ducaroy once said: We no longer need to sit upright, but are surrounded by softness.
Nowadays, many modern modular furniture lazy seats and even compressed transport products have drawn on this foam layering concept.It can be said that this seemingly simple structure initiated a revolution of de-skeleton-ization in the history of furniture design.
The construction without a skeleton is not merely a design choice, but also a philosophy of life.It liberates people from the traditional upright sitting posture and enables them to embrace a casual and relaxed way of living at home.
This design of sitting close to the ground reflects the spirit of freedom in the counterculture of the 1970s.It is thus widely used in the reading corners of art studios and private relaxation SpacesTherefore, it is widely used in the reading corners of art studios and private relaxation Spaces.It is not merely an object that passively carries the body, but an existence that breathes in harmony with the space.
In the context of global home design, this flexible structure formed by layers of foam remains the object of study and imitation for many emerging brands.From compressible transport module products to the application of eco-friendly materials, people are constantly maintaining that balance between simplicity and functionality.
It can be said that the internal secrets of this classic piece have long transcended the manufacturing process itself and become the source of inspiration for modern comfortable design.





