RESIN FOAM AND FOAM MATERIAL

摘要

A resin foam having a repulsive stress when compressed by 80% of 1.0 to 9.0 N/cm2, a maximum breaking strength of 1.0 to 10.0 MPa, and a ratio of the maximum breaking strength to a breaking strength in a direction orthogonal to a maximum breaking strength direction (maximum breaking strength/breaking strength in the direction orthogonal to the maximum breaking strength direction) of 1.0 to 5.0. The maximum breaking strength is defined as: a resin foam in a sheet form is measured for a breaking strength in an arbitrary direction in the horizontal direction of the sheet; next, the arbitrary direction is rotated about an axis by 10° intervals to measure a breaking strength in each direction; a direction where the highest breaking strength is measured is defined as the maximum breaking strength direction; and a breaking strength in the maximum breaking strength direction is defined as the maximum breaking strength.

主权项

1. A resin foam having a repulsive stress when compressed by 80% of 1.0 to 9.0 N/cm2, a maximum breaking strength as defined below of 1.0 to 10.0 MPa, and a ratio of the maximum breaking strength as defined below to a breaking strength in a direction orthogonal to a maximum breaking strength direction (maximum breaking strength/breaking strength in the direction orthogonal to the maximum breaking strength direction) of 1.0 to 5.0,
wherein the maximum breaking strength is defined as follows: a resin foam in a sheet form is measured for a breaking strength in an arbitrary direction in a horizontal direction of the sheet; next, the arbitrary direction is rotated about an axis by 10° intervals to measure a breaking strength in each direction; a direction where the highest breaking strength is measured is defined as the maximum breaking strength direction; and a breaking strength in the maximum breaking strength direction is defined as the maximum breaking strength.