| 摘要 |
<p>1473820 Laminating polystyrene foam and paper HERZBERGER PAPIERFABRIK LUDWIG OSTHUSHENRICH KG and HERMANN BERSTORFF MASCHINENBAU GmbH 24 Feb 1976 [4 March 1975] 07249/76 Heading B5N A method of lining a web of polystyrene foam with paper on one or each surface by the superposition of a web 2 of polystyrene foam and a web or webs 8, 9 of paper and the application of heat and pressure includes the step of moistening the lining paper immediately following the application of heat and pressure. The application of heat and pressure may be effected in the nip 5 between two heated calender rollers 3, 4. Moistening may be effected by rollers 13, 14, fed with water from containers 17, 18 via intermediate rollers 15, 16. The product, which may be used for packaging may be cut transversely by apparatus 19.</p> |
