Method of making a sandwich material with internal undulations and
protective layers
    1.
    发明授权
    Method of making a sandwich material with internal undulations and protective layers 失效
    制作具有内部起伏和保护层的夹心材料的方法

    公开(公告)号:US4765855A

    公开(公告)日:1988-08-23

    申请号:US773819

    申请日:1985-09-09

    摘要: The invention is primarily concerned with a sandwich material (55) made of sheets based on paper. This material is substantially comprised of a sheet (42) of corrugated paper (44) forming one or several layers. An intermediate paper sheet (31) is bonded to the corrugations of the sheet 42. A film (29) of a thermoplastic compound adheres physically as the result of an extrusion to the outer side of the intermediate paper sheet (31).The process for manufacturing this material consists firstly in extruding a film (29) of thermoplastic compound on the intermediate paper sheet (31), and then in bonding the web (27) of protective layer thus obtained on the corrugations of the sheet of corrugated paper (42).The invention is remarkable in that these operations are carried out on a standard machine for manufacturing corrugated paperboard. However, on the one hand an adhesive setting instantly at room temperature is used, and on the other hand the various heating elements used to bring about the setting of adhesives polymerizing through an endothermic reaction are kept switched off.The invention is particularly useful for making furniture or wall panels.

    摘要翻译: PCT No.PCT / CH85 / 00001 Sec。 371日期:1985年9月9日 102(e)1985年9月9日PCT 1985年1月10日PCT PCT。 公开号WO85 / 03030 日期:1985年7月18日。本发明主要涉及由基于纸的片材制成的夹心材料(55)。 该材料基本上由形成一层或几层的瓦楞纸(44)的片材(42)组成。 将中间纸片(31)接合到片材42的波纹。热塑性化合物的膜(29)由于挤出到中间纸张(31)的外侧而物理粘附。 制造该材料的方法首先在中间纸张(31)上挤出热塑性化合物的薄膜(29),然后将由此获得的保护层的薄片(27)粘合在瓦楞纸片的波纹上 (42)。 本发明的显着之处在于,这些操作在用于制造瓦楞纸板的标准机器上进行。 然而,一方面使用在室温下立即进行的粘合剂设置,另一方面,用于引起通过吸热反应聚合的粘合剂的凝固的各种加热元件被保持关闭。 本发明对于制造家具或墙板特别有用。