A process for producing non-scattering hollow plastic balloons comprises forming a mixture (A) by mixing non-foamed plastic balloons and a wetting agent (a plasticizer) at a temperature below the foaming starting temperature of the non-foamed plastic balloons, bringing the mixture (A) into contact with a wetting agent (a plasticizer) (B) heated to a temperature equal to or above the foaming starting temperature of the non-foamed plastic balloons, foaming the non-foamed plastic balloons, and cooling the mixture containing the foamed plastic balloons. Non-scattering foamed plastic balloons can be obtained simultaneously with the foaming. The process needs a smaller amount of a plasticizer than the conventional process of wetting the foamed plastic balloons with a plasticizer.
生产不飞散中空塑料气球的工艺包括:在低于非发泡塑料气球起泡温度的温度下,通过混合非发泡塑料气球和
润湿剂(
增塑剂)形成混合物(A),使混合物(A)与加热到等于或高于非发泡塑料气球起泡温度的
润湿剂(
增塑剂)(B)接触,发泡非发泡塑料气球,冷却含有发泡塑料气球的混合物。在发泡的同时可以得到不散开的发泡塑料气球。与用
增塑剂润湿发泡塑料气球的传统工艺相比,该工艺所需的
增塑剂量更少。