The present invention relates to a pressure sensitive adhesive sheet containing, laminated in this order, a supporting substrate, a pressure sensitive adhesive layer (X), a continuous void-containing layer including a composition containing fine particles (excepting silica), and a pressure sensitive adhesive layer (Y), the continuous void-containing layer having a mass concentration of the fine particles of from 45 to 100%.

A metal composite including an oxidized base metal and a fibrous composite material coupled by a self-assembled monolayer and adhesive is described. Additionally, a method of constructing a metal composite is described, wherein the method includes oxidizing a metal, depositing a self-assembled monolayer, and adhering a fibrous composite to the monolayer.

A polyethylene-based resin foam sheet with density of 15 to 150 kg/m.sup.3, including a foam layer containing, as a base resin, polyethylene-based resin, and antistatic layer which is lamination bonded to at least one side of the foam layer containing a polymeric antistatic agent and, as base resin, polyethylene-based resin, wherein polymeric antistatic agent melting point of 125 to 140 C. and ratio of its partial heat of fusion in a region above melting point to its total heat of fusion of 40% or lower, wherein antistatic layer contains the polymeric antistatic agent of 45 to 300 parts by mass based on 100 parts by mass of the polyethylene-based resin constituting the antistatic layer, wherein antistatic layer has a weight of 1 to 50 g/m.sup.2, and antistatic layer shows initial electrostatic potential of 50 V or lower when a voltage of 10 kV is applied to a surface for 30 seconds.

The present disclosure provides a cardboard-based unit, structural elements comprising said unit and land-vehicles comprising said units and structural elements.

To improve the stiffness of a thin single layer or mono-sheet of steel, a composite steel comprising at least two outer steel layers separated with a spacer. Spacer materials can include any metal less dense than steel, or a polymer or resin, optionally comprising a carbon or glass fiber, or Kevlar material. Such a composite steel can yield a higher stiffness than a mono-sheet of steel having the same total sheet thickness. For instance, moving the steel material away from the neutral axis with the spacer can increase the strain on bending to provide a high strength composite steel that maintains stiffness while also providing desirable weight savings.

A method of manufacturing T-shaped stringers made of composite material, including a second shaping step for shaping laminates into L-shaped preforms, which includes providing a set of tools formed by a fixed tool comprising a lower portion and an upper portion, and a moveable tool comprising a lower element and an upper element. It also includes the segment of the laminate intended for the foot of the preform being located between the lower portion and the upper portion of the fixed tool, and the segment of the laminate intended for the web of the preform being located between the lower element and the upper element of the moveable tool. It further includes vertically moving the moveable tool to progressively bend the web of the preform supporting it on a vertical wall of the fixed tool. The end of its web adopts a rounded shape.

The provision of an oxygen absorbent composition comprising a compound (A) having two or more tetralin rings, at least one of the tetralin rings having a hydrogen bond bonded to a benzylic position thereof, and having two or more imide bonds, and a transition metal catalyst.

A laminated nonwoven fabric includes a first nonwoven fabric containing first fibers, a second nonwoven fabric laminated on the first nonwoven fabric and containing second fibers, a third nonwoven fabric laminated on the second nonwoven fabric on an opposite side to the first nonwoven fabric and containing third fibers, and an adhesive containing a plurality of particles. Some of the plurality of particles of the adhesive is attached to the second nonwoven fabric. At least one of the first nonwoven fabric and the third nonwoven fabric is adhered to the second nonwoven fabric via the some of the plurality of particles of the adhesive. An average fiber diameter of the first fibers is larger than the average fiber diameter of the second fibers, and an average particle diameter of the plurality of particles of the adhesive is smaller than the average fiber diameter of the first fibers.

A tetrafluoroethylene (TFE) copolymer film having a first endotherm between about 50 C. and about 300 C., a second endotherm between about 320 C. and about 350 C., and a third endotherm between about 350 C. and about 400 C. is provided. In exemplary embodiments, the third endotherm is approximately 380 C. In some embodiments, the second endotherm is between about 320 C. and about 330 C. or between about 330 C. and about 350 C. TFE copolymer films have a methane permeability less than about 20 g*micron/cm.sup.2/min. In addition, the dense articles have a void volume of less than about 20%. Methods for dense articles from core shell tetrafluoroethylene copolymers are also provided. The dense articles exhibit improved physical and mechanical properties such as adhesion and barrier properties.

A tamper evident label flap positioned to cover an opening in a package. The label flap includes a base layer having a top surface and a bottom surface. A top layer is attached to the base layer by an adhesive layer. A tamper evident structure is located in at least one designated area between the base layer and the top layer. The tamper evident structure includes a first ink layer applied to the base layer and a second ink layer applied to the first ink layer. The first ink layer and the second ink layer are held together in a weaker bond than a bond between the top layer and the base layer. When the label flap is initially pulled from the package, the first ink layer and the second ink layer separate and define a visible permanent de-lamination which signifies the package has been opened.