Abstract: A laminated structure 1A includes a metal sheet 10A formed by laminating two or more metal layers 11, and a resin foam 20. The total thickness of the metal layers 11 in the metal sheet 10A, Ta (?m), and a thickness of the resin foam 20, Tb (mm), satisfy the relationship of the following formula (1). The present invention can provide a laminated structure having excellent flame retardancy. Ta/Tb?0.

Abstract: The present invention provides a polyolefin resin foam sheet having an area density of 5 g/m2 or more and 400 g/m2 or less, and having a time (t) required for a weight decrease from 90% by mass to 10% by mass, of 9 minutes or more, as measured by thermogravimetric analysis carried out at a heating rate of 10° C./min and a measurement temperature of 23° C. to 550° C. According to the present invention, a polyolefin resin foam sheet can be provided that has a high fire retardancy while maintaining a lightweight property.

Abstract: The polyolefin resin foam sheet is a polyolefin resin foam sheet having a plurality of cells in an inside thereof, wherein the 50% compressive strength is 120 kPa or less; the MD elongation percentage is 400% or less; and the TD elongation percentage is 200% or less.

Abstract: The present invention provides a polyolefin resin foam sheet having an area density of 5 g/m2 or more and 400 g/m2 or less, and having a time (t) required for a weight decrease from 90% by mass to 10% by mass, of 9 minutes or more, as measured by thermogravimetric analysis carried out at a heating rate of 10° C./min and a measurement temperature of 23° C. to 550° C. According to the present invention, a polyolefin resin foam sheet can be provided that has a high fire retardancy while maintaining a lightweight property.

Abstract: The present invention provides a polyolefin resin foam sheet having an area density of 5 g/m2 or more and 400 g/m2 or less, and satisfying at least one of the following conditions (1) and (2) in thermogravimetric-mass spectrometry carried out at a heating rate of 10° C.min over an entire measurement temperature range of a 200 to 550° C. measurement temperature, condition (1): a combustion gas generation ratio X defined as a ratio of a peak area value of an amount of a combustion gas P having a mass-to-charge ratio m/z of 55 generated at a measurement temperature of 200 to 364° C. with respect to the peak area value of an amount of the combustion gas P generated over the entire measurement temperature range is 25% or less; and condition (2): a combustion gas generation ratio Y defined as a ratio of a peak area value of an amount of a combustion gas Q having a mass-to-charge ratio m/z of 69 generated at a measurement temperature of 200 to 364° C.

Abstract: The polyolefin resin foam sheet is a polyolefin resin foam sheet having a plurality of cells in an inside thereof, wherein the 50% compressive strength is 120 kPa or less; the MD elongation percentage is 400% or less; and the TD elongation percentage is 200% or less.