芯地

1. Origins, structure, and basic meaning

• Structure: 芯地 is read as しんじ and is a noun for garment interfacing or interlining placed behind outer fabric to add structure.
• Basic usage: Putting it in a collar appears in 襟に芯地を入れる, while choosing it for a fabric appears in 布の厚さに合う芯地.

2. Common pitfalls and similar expressions

• Material that supports shape
  • Rather than serving as visible decoration, it supports a collar or another area from inside so that the garment keeps its form.
• Difference from 裏地
  • 裏地 is the lining covering a garment's inner surface, while 芯地 is a reinforcing material placed behind the outer fabric or between layers.