Text blocks should be constructed such that they 'honor and reveal' the relationships between the various elements - headings, subheadings, quotes, asides and footnotes. Robert Bringhurst recommends a character count per line of approximately 66 letters for optimum legibility, but accepts that anything between 45 and 75 is satisfactory.
Safety Edge is mainly used for protecting crushing and shearing points on electric shutters,sliding gates,industrial doors,automatic production lines,buses,road barriers,AGV,security and public transportations etc.According to the construction,it is divided into two types,integrated type and separated type.
1.Separated type composed by:sensitive tape,rubber profile,end piece,side plug and aluminum track;
2.Integrated type composed by:integrated sensitive edge,end piece,side plug and aluminum track.