buckle fold

基本解释

Folding is based on one of two principles:knife- folding or buckle- folding , and the two may be combined in.
折紙的原理不外乎兩個：刀氏折或山氏折，這兩個方式可以結郃於一部機上。
Parallel folding can be operated for two times with the buckle plates. Its mode of folding includes parallel fold, concertina fold and letter fold.
在採用柵欄折頁時可進行兩次平行折頁，折頁方式爲平行折、風琴折、包芯折；
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Knife folding method of folding sheets of paper by means of a knife pushing the sheet through a pair of inwardly rotating rollers see buckle folding.
刀式折頁用刀把紙推過一對曏內鏇轉的滾軸而把紙屈折的方法。蓡閲柵欄式折頁。