发明名称 |
CROSS-LINKED POLYOLEFIN FOAMS COMPRISING CORK PARTICLES |
摘要 |
The present invention provides a sheet of polymeric foam comprising chemically cross-linked, closed-cell, foam comprising at least one polyolefin;cork particles dispersed within said polymeric foam wherein said foam has a specific gravity of between 40-250kg/m3 and is essentially free of visible perforations. Also provided by the present invention is a process for producing a continuous polymeric sheet said comprising a chemically cross-linked, closed-cell, polyolefin foam comprising at least one polyolefin and cork particles, homogenously dispersed within the polyolefin foam wherein once produced, said continuous polymeric sheet has a specific gravity of between 40-250kg/m3 and is essentially free of visible perforations; the process comprising (i) continuously feeding into a mixing arrangement set at a temperature of between 60 C and 200 C a blend of at least one polyolefin resin, a blowing agent, a cross-linking agent and cork particles, to form therein a homogenous melt; (ii) transferring said melt into an extrusion line constructed to form a continuous sheet of said melt; (iii) conveying the continuous sheet into a heating module for heating said continuous sheet to a first temperature allowing cross-linking of said at least one polyolefin resin to obtain a cross-linked polyolefin sheet, said first temperature being lower than that required for activating said blowing agent; and (iv) heating the cross-linked polyolefin sheet to a second temperature allowing activation of said blowing agent, to obtain said continuous polymeric foam. |
申请公布号 |
WO2009128066(A1) |
申请公布日期 |
2009.10.22 |
申请号 |
WO2009IL00401 |
申请日期 |
2009.04.07 |
申请人 |
PALZIV;ZUR, BARUCH;DADON, OSHRI;NEZER, EHUD;REISMAN, BENJAMIN JOSHUA |
发明人 |
ZUR, BARUCH;DADON, OSHRI;NEZER, EHUD;REISMAN, BENJAMIN JOSHUA |
分类号 |
C08J9/00;B29C44/34;B29C44/56 |
主分类号 |
C08J9/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|