A physically crosslinked, closed cell continuous foam structure derived from recycled metallized polyolefin material; polypropylene, polyethylene, or combinations thereof, a crosslinking agent, and a chemical blowing agent is obtained. The foam structure is obtained by extruding a structure comprising a foam composition, irradiating the extruded structure with ionizing radiation, and continuously foaming the irradiated structure.

A continuously extruded unitary blank (CUBE) has a top, a bottom, two sides and at least one webbing there between parallel to the two sides. The CUBE has a front cut end and a rear cut end which define two open face channels to accommodate the forks of a fork lift and pallet jack. Two spaces are manufactured in the two sides and in the at least one webbing to accept a lateral insertion and a lateral removal of the forks. Chamfers are manufactured in edges of the cutouts to facilitate the insertion and the removal of the forks from the pallet. Chamfers are also manufactured in the front and rear cut ends to facilitate accommodation of the forks. Voids are manufactured in the bottom to allow pallet jack wheels to pass into the pallet and rest on a surface for a lifting of the pallet from the surface.

A continuously extruded unitary blank (CUBE) has a top, a bottom, two sides and at least one webbing there between parallel to the two sides. The CUBE has a front cut end and a rear cut end which define two open face channels to accommodate the forks of a fork lift and pallet jack. Two spaces are manufactured in the two sides and in the at least one webbing to accept a lateral insertion and a lateral removal of the forks. Chamfers are manufactured in edges of the cutouts to facilitate the insertion and the removal of the forks from the pallet. Chamfers are also manufactured in the front and rear cut ends to facilitate accommodation of the forks. Voids are manufactured in the bottom to allow pallet jack wheels to pass into the pallet and rest on a surface for a lifting of the pallet from the surface.

A film for use as an interleaf between substrates includes a first side having a first micro-embossed surface and a first formed pattern, a second side having a second micro-embossed surface and a second formed pattern, a basis weight of between about 35 gsm and about 80 gsm, a Low Load Thickness of between about 150 micrometers and 400 micrometers according to the Low Load Thickness Test, and a flexural stiffness of between about 150 grams and about 500 grams according to the Circular Bend Stiffness Test.

A film for use as an interleaf between substrates includes a first side having a first micro-embossed surface and a first formed pattern, a second side having a second micro-embossed surface and a second formed pattern, a basis weight of between about 35 gsm and about 80 gsm, a Low Load Thickness of between about 150 micrometers and 400 micrometers according to the Low Load Thickness Test, and a flexural stiffness of between about 150 grams and about 500 grams according to the Circular Bend Stiffness Test.

According to the present invention, devolatilization of a synthetic resin formed from a polymer or synthetic rubber can be improved and the synthetic resin can be foamed at a low temperature by injecting a devolatilization agent through a devolatilization agent injection nozzle provided in a downstream end segment cylinder of a cylinder assembly. In a vented twin-screw kneading extrusion apparatus and extrusion method according to the present invention, a devolatilization agent, which is injected through a downstream end devolatilization agent injection nozzle provided on a downstream end segment cylinder constituted by a segment cylinder positioned on a downstream end of a cylinder assembly, is dispersed in molten resin in the downstream end segment cylinder and kneaded by a downstream end kneading portion such that the molten resin is foamed by the devolatilization agent and then extruded.

According to the present invention, devolatilization of a synthetic resin formed from a polymer or synthetic rubber can be improved and the synthetic resin can be foamed at a low temperature by injecting a devolatilization agent through a devolatilization agent injection nozzle provided in a downstream end segment cylinder of a cylinder assembly. In a vented twin-screw kneading extrusion apparatus and extrusion method according to the present invention, a devolatilization agent, which is injected through a downstream end devolatilization agent injection nozzle provided on a downstream end segment cylinder constituted by a segment cylinder positioned on a downstream end of a cylinder assembly, is dispersed in molten resin in the downstream end segment cylinder and kneaded by a downstream end kneading portion such that the molten resin is foamed by the devolatilization agent and then extruded.

The present invention relates to a method for producing a laminate, wherein the laminate is obtained by integrally laminating an expanded beads molded article (a) composed of expanded beads A and having interconnected voids and an expanded beads molded article (b) composed of expanded particles B and having interconnected voids, the difference [P.sub.bP.sub.a] between the voidage (P.sub.a) of the expanded beads molded article (a) and the voidage (P.sub.b) of the expanded beads molded article (b) is 5% or more, and the expanded beads A and the expanded beads B satisfy the following (1) to (3): (1) a difference [d.sub.Bd.sub.A] between an average hole diameter (d.sub.A) of the through-holes of the expanded beads (A) and an average hole diameter (d.sub.B) of the through-holes of the expanded beads (B) is 0.3 mm or more and 2 mm or less; (2) the expanded beads (B) have an average outer diameter D.sub.B of 3.5 mm or more and 5 mm or less; (3) a difference [D.sub.BD.sub.A] between an average outer diameter D.sub.A of the expanded beads (A) and an average outer diameter D.sub.B of the expanded beads (B) is 0.3 mm or more and 2 mm or less.

According to the present invention, devolatilization of a synthetic resin formed from a polymer or synthetic rubber can be improved and the synthetic resin can be foamed at a low temperature by injecting a devolatilization agent through a devolatilization agent injection nozzle provided in a downstream end segment cylinder of a cylinder assembly. In a vented twin-screw kneading extrusion apparatus and extrusion method according to the present invention, a devolatilization agent, which is injected through a downstream end devolatilization agent injection nozzle (7c) provided on a downstream end segment cylinder constituted by a segment cylinder (1g) positioned on a downstream end of a cylinder assembly (1), is dispersed in molten resin in the downstream end segment cylinder (1g) and kneaded by a downstream end kneading portion (6c) such that the molten resin is foamed by the devolatilization agent and then extruded.

According to the present invention, devolatilization of a synthetic resin formed from a polymer or synthetic rubber can be improved and the synthetic resin can be foamed at a low temperature by injecting a devolatilization agent through a devolatilization agent injection nozzle provided in a downstream end segment cylinder of a cylinder assembly. In a vented twin-screw kneading extrusion apparatus and extrusion method according to the present invention, a devolatilization agent, which is injected through a downstream end devolatilization agent injection nozzle (7c) provided on a downstream end segment cylinder constituted by a segment cylinder (1g) positioned on a downstream end of a cylinder assembly (1), is dispersed in molten resin in the downstream end segment cylinder (1g) and kneaded by a downstream end kneading portion (6c) such that the molten resin is foamed by the devolatilization agent and then extruded.