| 摘要 |
<p>A heat shrinkable laminate is made by pressing together between calender rolls two heat shrinkable films with, between the films, a coating of a curable polyurethane adhesive formed by blending a liquid polyol or polyester with a liquid isocyanate and with microcapsules enclosing a hardening accelerator and then pressing the films together between calendar rolls, thereby rupturing the capsules and accelerating the hardening of the adhesive.</p> |
