Net bag, 1950s
Source
MoDiP
History
The history of this bag is unknown.
Material
Made entirely of the featured material, polyvinyl chloride, except for the metal rings.
Degradation
Polyvinyl chloride is chemically an unstable material. The plasticiser has come to the surface making it sticky. Chemical change to the polyvinyl chloride has lead the pink to darken in places.
Degradation typical of the material not visible in this example
It might have become rigid. There could be a strong 'plastic' smell.
Treatments
None. The deterioration is irreversible.
Display and storage
Lay flat, Interleaved and loosely wrapped in silicone release paper to stop it sticking. It could be stored with molecular sieve sachets to absorb acid. Store in the dark to slow discolouration. Keep cool, if possible at 10 - 15°C.
Downloads
Images from March 20151.63 MB
Images from March 20161.71 MB
Images from September 20161.61 MB
Images from March 20171.55 MB
Images from September 20171.51 MB
Images from March 20181.67 MB
Images from September 20181.51 MB
Images from March 2019576.22 KB
Images from September 2019642.98 KB