芯材(しんざい)

しんざい
noun
core material; heartwood
buildingplant-tree
1. core material; inner material
The material forming the inner core of a layered or composite structure. Used in construction, manufacturing, and materials science to describe the central structural component.
壁(かべ)の芯材(しんざい)に合板(ごうはん)を使用(しよう)した。
Plywood was used as the core material for the wall.
この断熱(だんねつ)パネルの芯材(しんざい)は発泡(はっぽう)ウレタンでできている。
The core material of this insulation panel is made of urethane foam.
軽量(けいりょう)で強度(きょうど)のある芯材(しんざい)を選(えら)ぶことが、サンドイッチ構造(こうぞう)の設計(せっけい)では重要(じゅうよう)だ。
Choosing a lightweight yet strong core material is important in the design of sandwich structures.
2. heartwood
The dense, dark inner wood of a tree trunk, as opposed to the lighter sapwood on the outside. Heartwood is valued in woodworking for its durability and color.
檜(ひのき)の芯材(しんざい)は赤(あか)みがかっている。
The heartwood of cypress has a reddish tint.
芯材(しんざい)は辺材(へんざい)より耐久性(たいきゅうせい)が高(たか)い。
Heartwood is more durable than sapwood.
家具(かぐ)職人(しょくにん)は木目(もくめ)の美(うつく)しい芯材(しんざい)を好(この)んで使(つか)う。
Furniture craftsmen prefer to use heartwood with beautiful grain patterns.

A compound of 芯(しん) (core) and 材(ざい) (material/wood). The word has two distinct domains: in manufacturing it means core material in a composite structure, and in forestry/woodworking it means the dark inner wood of a tree.

Common collocations

  • 芯材(しんざい)と表面材(ひょうめんざい): core and surface material
  • 芯材(しんざい)と辺材(へんざい): heartwood and sapwood
  • 断熱(だんねつ)芯材(しんざい): insulation core material

Similar words

  • 心材(しんざい): heartwood (alternate kanji, same meaning in the forestry sense)
  • 辺材(へんざい): sapwood (the lighter outer wood, opposite of heartwood)
  • 基材(きざい): base material; substrate
general
Added 2026.5.3 9:00 · Revised 2026.10.12 9:41
26500/26625_shinzai