| 摘要 |
Cross-linked thermoplastics articles, e.g. heatshrinkable pipe sleeves, having homogeneous welds, are fabricated by providing a radiant energy-crosslinkable thermoplastics sheet, masking areas of the sheet, exposing the masked sheet to appropriate radiant energy, fusing the masked and relatively uncrosslinked areas together under heat and pressure, and locally applying crosslink inducingenergy to the fused portions. |
