年表作成・共有サービス - pastport

Synthetic

 The proven combination of materials - synthetic lifting healds, doup healds of steel - and the proper shaping are responsible for the excellent performance characteristics of TRANSALLY leno healds. The broad center part of the lifting healds guarantees an excellent guiding of the doup heald. The head of the doup heald is effectively covered, so that the standard end is not obstructed during shed change, and hence a clean leno binding is ensured. An additional advantage of the combination of synthetic material and steel is: soiling of the fabric by metal abrasion and frictional corrosion are things of the past. The risk of smearing is also averted. TRANSALLY leno healds are particularly suited for glass fiber, cotton and woolen yarns. 

 
https://www.transally-co.com/synthetic-plastic-leno/