pressure-sealed postcard; crimped postcard
A postcard whose edges are sealed by pressure, often used for confidential mail such as bills or personal information.
Utility bills often arrive as pressure-sealed postcards.
When opening a pressure-sealed postcard, please carefully tear along the perforation.
Standard mixed kanji-kana spelling.
Variant with ハガキ in katakana; sometimes seen in commercial contexts.
Full kanji spelling; less common than the mixed form.
Compound of 圧着 (あっちゃく, 'pressure bonding') and はがき ('postcard').