| 摘要 |
<p>Two products to be mixed only at the last moment before use are separated in a single container by a third product inert to both of them. Specifically the active and spacer products may be packed in any number of alternate layers. Such layers may be superimposed or coaxial. an anchor bar may be sealed in a cartridge enclosing two tubes containing respectively a soft resin and a hardener or catalyst, so that a correct mix is obtained on crushing.</p> |
