foil, gilt
箔 centers on a thin, flat layer applied to a surface: metal foil or gilt. The idea is a delicate sheet that covers or decorates something.
箔 combines 竹 (bamboo) with 泊, which likely contributes the sound. The bamboo top suggests a thin bamboo sheet, fitting the foil or gilt meaning.
Bamboo 竹 can be split into thin sheets, and the bottom 泊 looks like a flat surface with water. Imagine a delicate bamboo foil floating on water: 箔 is foil or gilt.
For ハク, picture a thin foil sheet that you hack with a knife: hack -> ハク, and the foil tears cleanly.
foil; (gold, etc.) leaf
gold leaf; gold foil; beaten gold
foil stamping; hot stamping
silver foil; silver leaf; beaten silver
aluminum foil
hikihaku; traditional weaving technique with precious metallic threads
impressed (glued) gold or silver foil on traditional Japanese fabric
to increase in value; to gain prestige
to give something weight; to give something dignity
making foil; foil-maker
embroidery and foiling; traditional Japanese embroidery and impressed gold or silver foil
coloured foil; color foil
metal foil; metallic foil
to reveal one's true colors
copper foil (used in copper plating)
tin foil; tinfoil