| 摘要 |
A plastic composite film resistant to UV radiation is manufactured by continuously bonding an endless supporting film made of a thermoplastic material, in particular polyethylene terephthalate, to two covering films made of a material resistant to UV radiation, such as polyvinylidene fluoride or polyvinyl fluoride, using an adhesive based on polyurethane or a polyesterimide resin. The covering films and/or the adhesive contain materials which absorb UV radiation. The polyethylene terephthalate supporting film, for example, which is made of a material attacked by UV radiation, is thereby protected against UV radiation. A further advantage of this composite film is its high tear strength, which is greater than the sum of the tear strengths of the individual films used to manufacture the composite film. The composite film can therefore be used advantageously in thicknesses of 0.08 to 0.03 mm as a material for making sails or sail windows. |
