| 摘要 |
An apparatus for forming thin air-cushioning material (36) including a first heated roller (14), a forming roller (16), a heated pressure roller (24), and a cooling roller (38) is disclosed. Two strips of thermoplastic material (12, 20) are fed to the heated rollers (14, 24), respectively. Thermoplastic material (12) is formed on the forming roller (16) which has cavities (30) connected to a vacuum source (54) by conduit (56). The outer periphery surface of the forming roller (16) has an attached resilient and insulating cover (32) which is absent the cavities (30). The two films (12, 20) are pressed and welded together at the nip formed between the pressure roller (24) and the forming roller (16) to form the material (36). The material (36) is then cooled on the cooling roller (38). |
