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自从1955年涤纶胶片问世以来,国外各公司相继进行了接片的研究工作,归纳起来有三种接片形式,即溶剂接片、胶带接片和热熔接片。(一)溶剂接片由于涤纶片基具有化学惰性,因此在接片时,除涂以溶剂或胶粘剂外,尚须加热、加压等辅助措施才能获得封固。操作比较麻烦、溶剂挥发有味,而且接片牢度受温湿度影响较大。(二)胶带接片采用压敏胶带仅能接合加工后的胶片,而不能接
Since the advent of polyester film in 1955, foreign companies have carried out the research work of the connecting piece in succession. There are three types of joining pieces, that is, solvent joint, adhesive tape joint and heat sealing joint. (A) Solvent tab As polyester base is chemically inert, so in the tab, in addition to coated with solvent or adhesive, still have to heat, pressure and other ancillary measures to obtain the seal. The operation is more troublesome, the solvent volatilizes and the taste, and the tab fastness is greatly affected by the temperature and humidity. (B) adhesive tape using pressure-sensitive adhesive tape can only be processed after the film, but can not answer