发明名称 SANDWICH MATERIAL
摘要 <p>The invention relates to a method for modifying a sheet-like sandwich material comprising a core material provided between two top layers, wherein under pressure an amount of thermoplastic material is injected through one of the top layers into the core material, an object is placed in the still plastic material, whereafter the plastic material hardens.</p>
申请公布号 WO1993022135(A1) 申请公布日期 1993.11.11
申请号 NL1993000088 申请日期 1993.04.27
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