Polyurethane foam in 1954: Flexible foam furniture 뿯½ Flexible foam furniture
Circularity is an editorial 0–100 mark relative to the other 31 materials in this atlas — not a laboratory certificate. Keep Polyurethane foam with “Flexible foam furniture” and 0 from 1954. Polyurethane foam holds together by ionic/covalent networks.
This atlas treats Polyurethane foam as a system: mill route, coatings, tests and the cavity it sits in. Conductivity note: λ ~0.022–0.028 W/m·K (aged PIR boards, bands). Insulation score 88/100 is relative to 32 entries — metals lose, VIPs and aerogels win. Fire letter in editorial use: typically E–B with facers; not A1. Do not equate A1 with “safe in a blaze” or E with “illegal”. Assemblies decide.
Origin: Otto Bayer 1937; fridge foam 1950s, Germany. The process chapter follows feedstock → conversion → forming → finish → install. Uses span buildings to defence / safety. Pairings matter: mineral-wool. Circularity mark 32/100. Ask which scrap, which certificate, which year. Related atlas entries, a short glossary, and three threads that keep Polyurethane foam honest.
The coating that sometimes protects foam cores. EN 13501-1 reaction-to-fire letter (A1–F), not a wall rating. Thermal conductivity in W/m·K. Lower means better bulk insulation. Declared performance after blowing-agent or moisture drift. The zone where heat or chemistry changes the datasheet.
The label keeps Polyurethane foam, 1954, and 0. “Flexible foam furniture” is the condition on the figure. Keep Polyurethane foam with “Flexible foam furniture” and 0 from 1954. 01954
Figures to keep
- Year of the condition
- 1954
- Property figure
- 0
- Material
- Polyurethane foam
- Use line
- Flexible foam furniture
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