| 摘要 |
<p>A spread foam is made by the no-gel method. In the process, a conventional no-gel foam latex composition, comprising the latex of an elastomeric polymer, is frothed and a thickener latex is added and mixed with the latex composition at the time of frothing; the thickened composition is then spread, for example, on a textile substrate, carpet back or as an unsupported foam, dried and, if desired, cross-linked. The injection of the thickener latex enables a high density foam of good quality to be produced from compositions which could otherwise only produce foams of low and medium densities.</p> |
