Polyurethane foam in 1950s: Rigid fridge foam
Read the condition on Polyurethane foam before the nickname. Year 1950s, line “Rigid fridge foam,” figure 60. The coating that sometimes protects foam cores. A material is what it is made of, the condition it survives, and where it goes afterward. Polyurethane foam under “Rigid fridge foam” in 1950s should say which, with 60 tied to the condition. A figure with no condition is a boast. Readers meet the name on the back of a product, so the code and the history should not share one sentence.
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.
FR fibre vs FR foam — different jobs. 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, 1950s, and 60. “Rigid fridge foam” is the condition on the figure.1950s
Figures to keep
- Year of the condition
- 1950s
- Property figure
- 60
- Material
- Polyurethane foam
- Use line
- Rigid fridge foam