发明名称 |
Method of making polypropylene printing plate using paper matrix |
摘要 |
A method of making a polypropylene printing plate using a paper matrix in which a roll and an opposing member are prepared, a paper matrix is attached to one of the roll and opposing member, a crystalline ethylene-propylene copolymer having a MFI (melt flow index) of 3 DIFFERENCE 10, containing ethylene less than 20% by weight and tensile yield strength of 220 DIFFERENCE 330 kg/cm2 is continuously fed under molten state between the roll and the opposing member, and then the crystalline ethylene-propylene copolymer is pressed and cooled to be hardened. Further, a reproducing printing plates consists of a crystalline ethylene-propylene copolymer whose melt flow index is selected in a range of 3 DIFFERENCE 10, which contains ethylene less than 20 weight % and which has the tensile yield strength of 220 DIFFERENCE 330 kg/cm2.
|
申请公布号 |
US4297263(A) |
申请公布日期 |
1981.10.27 |
申请号 |
US19760669817 |
申请日期 |
1976.03.24 |
申请人 |
MITSUI TOATSU CHEMICALS INC. |
发明人 |
MIYAMOTO, KINZO;TANAKA, TAKAYASU;INOUE, YOSHIMI |
分类号 |
B41C3/06;B41D7/00;B41N1/12;(IPC1-7):C08K5/20 |
主分类号 |
B41C3/06 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|