摘要:
A foamed sheet according to the present invention has a thickness of 30 to 500 µm and includes a foam. The foam has a density of 0.2 to 0.7 g/cm 3 , an average cell diameter of 10 to 150 µm, and a peak top of loss tangent (tan δ) occurring in a temperature range of from -30°C to 30°C, where the loss tangent is defined as the ratio of a loss modulus to a storage modulus determined at an angular frequency of 1 rad/s in dynamic viscoelastic measurement of the foam. The foam preferably has a maximum of the loss tangent (tan δ) in the temperature range of from -30°C to 30°C of 0.2 or more.
摘要:
Provided is a water-dispersed PSA composition capable of forming a PSA that combines adhesive strength and cohesive strength in a good balance. The present invention provides a water-dispersed PSA composition comprising an acrylic polymer (A) and an acrylic polymer (B). The acrylic polymer (B) has a Tg of 0 °C or higher and a Mw of higher than 0.3 × 10 4 , but not exceeding 5 × 10 4 . The acrylic polymers (A) has a Mw higher than the Mw of the acrylic polymer (B).
摘要:
Provided is a build mat to which a 3D print sticks well and from which the 3D print is easily separated. The build mat provided by this invention comprises a substrate and a surface layer provided to the first face of the substrate. The build mat has a peel strength of 1.5 N/18mm or greater and 10 N/18mm or less, determined by peeling the mat from polylactic acid (PLA) placed on the surface layer; and it is constituted so that the surface layer remains on the PLA in the peel strength measurement.
摘要:
A foamed sheet according to the present invention has a thickness of 30 to 500 µm and includes a foam. The foam has a density of 0.2 to 0.7 g/cm 3 , an average cell diameter of 10 to 150 µm, and a peak top of loss tangent (tan ´) occurring in a temperature range of from -30°C to 30°C, where the loss tangent is defined as the ratio of a loss modulus to a storage modulus determined at an angular frequency of 1 rad/s in dynamic viscoelastic measurement of the foam. The foam preferably has a maximum of the loss tangent (tan ´) in the temperature range of from -30°C to 30°C of 0.2 or more.