| 摘要 |
<p>The present invention relates to a method for end-to-end joining of paper ro ll cores into a continuous core master. The primary goal of the invention is to produce usable cores from those returned for recycling after use. In the method, the ends of core sections are reworked into complementary shapes required for a mating joint, glue is applied to the complementary mating surfaces of the joint and the core section ends pushed in the axial directio n abutting each other and the glue is set. According to the invention, the cro ss section of the cores is trued circular at least over the area of the joined core sections by applying a radially expansive trueing force on the joint. T he radial trueing force is also advantageously employed for braking the axial travel of the core sections during the joining operation. The invention also concerns an apparatus suited for implementing the method.</p> |
