| 摘要 |
This invention relates to a method and apparatus for making reusable paint rollers comprised of a core formed from thermoplastic material. Known methods and apparatus suffer from the drawbacks of bulky preformed thermoplastic tubular cores that are difficult to handle and expensive to transport, long assembly lines and the need for a heater. The above problems are solved by providing a method and apparatus for making reusable paint rollers comprised of a core formed from thermoplastic material. The thermoplastic material is formed into a core (18) about a stationary mandril (14). An adhesive is then applied to the core (18) thereupon a cover (30) is bonded thereto. In a first embodiment, the core (18) is formed by winding a plurality of thermoplastic strips (24, 26, 28) about the mandril (14). In a second embodiment, the core (18) is formed by applying liquified thermoplastic material to a driven belt (16) which transfers the thermoplastic material to the mandril (14). |
