Being the manner which produces the underpants model item which possesses the west encircling part and the multiple trail section encircling parts, the aforementioned underpants model item (21) each one, has the chassis structure which at least possesses one elastic panel, aforementioned manner has the fact that aforementioned chassis structure is formed, aforementioned at least one elastic panel the step where just 50% stretching does the aforementioned 1st web at least a) the 1st web which is the elastic web to which the elastic material has one formation at least (1a and 1b) step and b which are offered) at least in one direction,C) The aforementioned 1st web (1a and 1b) while being containment when stretching it is done, the 1st web which stretching is done (1a and 1b) the 2nd web (2a and 2b) being the step adhesion, the aforementioned 2nd web (2a and 2b) inside the elastic material or the inelasticity material has one formation at least, the aforementioned 1st web adhesion (1a and 1b) and the aforementioned 2nd web adhesion (2a and 2b) forms the elastic compound web (4), stretching the 1st web which is doneThe manner where the 1st web which aforementioned stretching is done (1a and 1b) at least just 4% of the length which aforementioned stretching is done, step and f which ease aforementioned elastic compound) stretching is done (1a and 1b) the 2nd web (2a and 2b) step and d adhesion) aforementioned at least in one direction, the aforementioned compound web which at the same time is eased the step which assembles aforementioned chassis structure from the chassis component which it has (4) and, features that it has, produces the underpants model item.ウエスト包囲部分及び複数の脚部包囲部分を有するパンツ型用品を製造する方法であって、前記パンツ型用品(21)のそれぞれが、少なくとも1つの弾性パネルを有するシャーシ構造を備え、前記方法は、前記シャーシ構造を形成することを備え、前記少なくとも1つの弾性パネルは、a)弾性材料の少なくとも1つの層を備えている弾性ウェブである第1のウェブ(1a,1b)を提供するステップと、b)少なくとも1つの方向において、前記第1のウェブを少なくとも50%だけ延伸するステップと、c)前記第1のウェブ(1a,1b)が延伸された状態で保持されている間に、延伸された第1のウェブ(1a,1b)を第2のウェブ(2a,2b)に接着するステップであって、前記第2のウ
