A multilayer structure for storing hydrogen, including, from the inside, at least one sealing layer and at least one composite reinforcement layer, an innermost composite reinforcement layer being welded to an outermost adjacent sealing layer, the sealing layers being a composition predominantly of: at least one semi-crystalline polyamide thermoplastic polymer P1i, i=1 to n, n being the number of sealing layers, excluding an amide polyether block (PEBA), up to 50% by weight of impact modifier relative to the total weight of the composition, up to 1.5% by weight of plasticizer relative to the total weight of the composition, and at least one of the composite reinforcement layers of a fibrous material in the form of continuous fibers, which is impregnated with a composition predominantly of at least one semi-crystalline polyamide polymer P2j, j=1 to m, m being the number of reinforcement layers.

The invention relates to a laminate (10; 10a) having a core (12) containing a thermoplastic polymer and having metal cover layers (16) disposed on either side of the core (12), each cover layer (16) being connected to the core (12) via an adhesive layer (14) having at least one polymer layer (15).

The invention relates to a laminate (10; 10a) having a core (12) containing a thermoplastic polymer and having metal cover layers (16) disposed on either side of the core (12), each cover layer (16) being connected to the core (12) via an adhesive layer (14) having at least one polymer layer (15).

A polyolefin-based film comprising at least one layer permitting printing as a result of laser irradiation; wherein not less than 100 ppm but not greater than 3000 ppm of pigment permitting printing as a result of laser irradiation is present in all layers of the film; haze thereof is not less than 1% but not greater than 30%; and unevenness in thickness thereof in either a machine direction or a transverse direction is not less than 0.1% but not greater than 25%. An object is to provide a film capable of being printed in distinct fashion by a laser, that excels with respect to unevenness in thickness, and that is of high transparency, and at the same time provide packaging which employs such film and on which printing has been directly carried out.

A polyolefin-based film comprising at least one layer permitting printing as a result of laser irradiation; wherein not less than 100 ppm but not greater than 3000 ppm of pigment permitting printing as a result of laser irradiation is present in all layers of the film; haze thereof is not less than 1% but not greater than 30%; and unevenness in thickness thereof in either a machine direction or a transverse direction is not less than 0.1% but not greater than 25%. An object is to provide a film capable of being printed in distinct fashion by a laser, that excels with respect to unevenness in thickness, and that is of high transparency, and at the same time provide packaging which employs such film and on which printing has been directly carried out.

An elastomeric composition, including at least one skin layer and a core layer, with non-blocking properties such that the elastomeric composition can be wound is provided. The core layer includes an elastomer, and the skin layer includes an elastomer, which may be the same or different from the core layer, and a non-elastic polyolefin. Further, the skin layer can be present as a small portion of the total elastomeric composition, and may maintain the elastic efficiency of the composition.

A decorative sheet for vacuum forming is difficult to peel off during vacuum forming between a first vinyl chloride-based resin layer and a second vinyl chloride-based resin layer and can give a design of various colors. This decorative sheet for vacuum forming includes: a first vinyl chloride-based resin layer containing a vinyl chloride-based resin and a coloring agent; and a second vinyl chloride-based resin layer which is laminated on the first vinyl chloride-based resin layer, contains a vinyl chloride-based resin, and is transparent, wherein the content of titanium oxide particles of the coloring agent is less than 1 part by mass, the first vinyl chloride-based resin layer contains inorganic particles, and at least some of the inorganic particles are calcium carbonate particles.

A decorative sheet for vacuum forming is difficult to peel off during vacuum forming between a first vinyl chloride-based resin layer and a second vinyl chloride-based resin layer and can give a design of various colors. This decorative sheet for vacuum forming includes: a first vinyl chloride-based resin layer containing a vinyl chloride-based resin and a coloring agent; and a second vinyl chloride-based resin layer which is laminated on the first vinyl chloride-based resin layer, contains a vinyl chloride-based resin, and is transparent, wherein the content of titanium oxide particles of the coloring agent is less than 1 part by mass, the first vinyl chloride-based resin layer contains inorganic particles, and at least some of the inorganic particles are calcium carbonate particles.

The present disclosure provides a resin composition containing a bio-polyethylene resin (A), an ethylene-vinyl alcohol copolymer (B), and an alkali metal salt (C), wherein the content of the alkali metal salt (C) is 10 ppm to 1500 ppm, in terms of metal, with respect to the weight of the ethylene-vinyl alcohol copolymer (B). With this resin composition, gel formation and a reduction in transparency during molding are suppressed, and a molded product having an excellent appearance can thus be obtained.

A polymer bilayer includes a layer of a porous fluoropolymer directly overlying a layer of polyethylene. The polyethylene layer may be porous or dense and may include an ultra-high molecular weight polymer. The polymer bilayer may be co-integrated with structures (e.g., wearable devices) exposed to high thermal loads (>0-1000 W/m.sup.2) and provide passive cooling thereof. For instance, passive cooling of AR/VR glasses under different solar loads may be achieved by a polymer bilayer that is both highly reflective across solar heating wavelengths and highly emissive in the long-wavelength infrared. The high reflectance decreases energy absorption across the solar spectrum while the high emissivity promotes radiative heat transfer to the surroundings.