摘要:
A sheet formed by using as a main component an aliphatic polyester having a melt viscosity of 1.0 × 10 3 - 1.0 × 10 6 poises at a temperature of 190°C and a shear rate of 100 sec -1 , and having a melting point of 70 - 190°C . The sheet of the present invention is biodegraded when buried in soil and is excellent in mechanical properties and transparency. The sheet is also superior in non-absorbency of aroma as well as heat-sealability and formability.
摘要:
An aliphatic polyester resin composition having a low combustion heat, characterized in that a filler is mixed with an aliphatic polyester having a number-average molecular weight of at least 10,000, synthesized from glycol and aliphatic polybasic acid or acid derivative thereof. A sheet formed from the composition has excellent tensile strength, stiffness and impact strength as well as being biodegradable.
摘要:
An aliphatic polyester resin composition having a low combustion heat, characterized in that a filler is mixed with an aliphatic polyester having a number-average molecular weight of at least 10,000, synthesized from glycol and aliphatic polybasic acid or acid derivative thereof. A sheet formed from the composition has excellent tensile strength, stiffness and impact strength as well as being biodegradable.
摘要:
A method for producing polyester foamed articles comprising: heating and foaming a resin composition comprising a foaming agent, and an aliphatic polyester having a melt viscosity of 1.0 × 10³ - 1.0 × 10⁶ poises at a temperature of 190°C and a shear rate of 100 sec⁻¹, and having a melting point of 70 - 190°C . Extrusion or forming in a mold using pre-expanded beads can be applied. The foamed articles such as insulating boxes and cushioning materials have biodegradability and excellent mechanical properties such as tensile strength and cushioning properties.