发明名称 |
TRANSPARENT SHEETS AND CONTAINERS |
摘要 |
A sheet formed form a uniform blend of from about 80 to 97% by weight of polyethylene terephthalate having an intrinsic viscosity of above about 0.9 and a melt viscosity at 525.degree.F. of above about 10,000 poises and correspondingly from about 20 to 3% by weight of a polycarbonate resin having an intrinsic viscosity of about 0.4 to 0.6 and a melt viscosity at 500.degree.F. of less than 50,000 poises; said sheet having a haze value as determined by ASTM D-1003 of less than about 2% and being essentially amorphous and non-oriented. Also disclosed is a process for forming a sheet which comprises uniformly blending the composition, extruding the composition into a sheet at a temperature between about 490 to 530.degree.F. and rapidly cooling the sheet by contact with at least one cooling surface maintained at a surface temperature in the range of about 50 to 160.degree.F. for a period of time not exceeding about 15 seconds. Containers may be formed form such sheets by a thermoforming step at temperatures in the range of about 210 to 280.degree.F. |
申请公布号 |
AU1886476(A) |
申请公布日期 |
1978.04.27 |
申请号 |
AU19760018864 |
申请日期 |
1976.10.20 |
申请人 |
ALLIED CHEMICAL CORPORATION |
发明人 |
PHILLIP STUART BOLLEN;WILLIAM SACKS;SURENDRA A. AMIN |
分类号 |
A47G19/00;B65D65/02;B65D65/38;C08L67/00;C08L67/02 |
主分类号 |
A47G19/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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