B32B27/283

Milliwave band radio wave absorption sheet and milliwave radio wave absorption method
11509061 · 2022-11-22 · ·

Provided is a light weight and remarkably flexible sheet-shaped radio wave absorber having excellent radio wave absorbing capacity in milliwave band frequencies. The invention is a milliwave band radio wave absorption sheet comprising a radio wave reflection layer (A), a radio wave absorption layer (B) disposed above the layer (A) so as to be parallel thereto, and a protective layer (C) disposed above the layer (B) so as to be parallel thereto. The layer (B) has, at a frequency of 79 GHz, a dielectric constant, wherein the real part is 10 to 20 and the absolute value of the imaginary part is 4 to 10. The layer (B) has a film thickness of 200 to 400 μm. The absolute value of the imaginary part/real part from the dielectric constant is within a range of 0.30 to 0.60. The layer (C) has, at a frequency of 79 GHz, a dielectric constant, wherein the real part is 1.5 to 8.0 and the absolute value of the imaginary part is less than 1.0, and has a film thickness of 50 to 200 μm. In the milliwave band radio wave absorption sheet, the optical reflectance at an incident angle of 60° is 50% or greater, and the optical reflectance at an incident angle of 20° is 25% or greater. In addition, the invention provides a milliwave band radio wave absorption method using the radio wave absorption sheet, and a radio wave damage prevention method involving the installation of the radio wave absorption sheet.

Resin composition, resin cured product and resin substrate
11505694 · 2022-11-22 · ·

A resin composition including: a thermosetting resin component including a mesogen; and a phosphorus atom-containing thermoplastic polymer type frame retardant, wherein the thermoplastic polymer type frame retardant is a phosphorous atom-containing formed by polymerizing or copolymerizing one of monomers represented by general formulae (1) and (2) below, ##STR00001## wherein, in the general formulae (1) and (2), each of R1 and R2 is any one of an alkyl group, an alkoxy group, an aryl group and an aryloxy group, R1 and R2 being different or identical, and R3 is a methyl group or a hydrogen atom.

FRONT PANEL FOR DISPLAY DEVICE, FLEXIBLE ORGANIC ELECTROLUMINESCENCE DISPLAY DEVICE, STACKED BODY FOR DISPLAY DEVICE, AND STACKED BODY

The present disclosure provides a front panel for a display device comprising a substrate layer, an A layer, an impact absorbing layer, and a B layer, in this order, wherein a shear storage elastic modulus of the A layer and the B layer, at frequency of 950 Hz and temperature of 23° C., is 20 MPa or less, and in the impact absorbing layer, a tensile storage elastic modulus at frequency of 950 Hz and temperature of 23° C. is 200 MPa or more and 5000 MPa or less, and a glass transition temperature is 50° C. or more.

Method of producing metal member, method of producing resin member, and method of producing exterior part
11584091 · 2023-02-21 · ·

Provided are a method of producing a metal member, a method of producing a resin member, and a method of producing an exterior part of a vehicle, each using a laminated body including a paint substitute film that includes a thermoplastic resin film, a colored layer, and a semi-cured hard coat layer, in this order, and a protective film that is bonded to a surface of the semi-cured hard coat layer. (1) The method of producing a metal member uses a steel plate together with the laminated body, and includes: a molding step of performing thermocompression bonding on the laminated body and the heated steel plate and performing press-molding while curing the semi-cured hard coat layer. (2) The method of producing a resin member uses a molten resin together with the laminated body, and includes: inserting the laminated body into a mold; performing in-mold molding by performing injection-molding using the molten resin; and curing the semi-cured hard coat layer after the insertion into the mold and until the in-mold molding ends. (3) The method of producing an exterior part of a vehicle includes combining the metal member produced by the above-described method, and the resin member produced by the above-described method.

DRY APPLY PROTECTIVE METHODS

A system for protecting a surface of a substrate includes a protective film, which is configured to be applied and secured to the surface, as well as a backing on an adherent surface of the protective film and an application tape over an exterior surface of the protective film. Protruding features, such as tabs, adjacent to different peripheral edges of the protective film may enable removal of the backing and the application tape from the protective film, and may include features that indicate the order in which each protruding feature is to be grasped to peel its corresponding element away from the protective film. Methods of using such a system are also disclosed.

Thermally-bondable multi-layered composite film for manufacturing outdoor clothing, and method for manufacturing same

Provided are a multi-layered composite film that may be thermally-bonded to a fabric by using a hot melt adhesive that is dot-coated on the surface thereof, and a method of manufacturing the same. In particular, the present invention relates to: a thermally-bondable multi-layered composite film which can be used in the manufacture of outdoor clothing, has excellent breathability and waterproofing properties, and can simplify the process of manufacturing the outdoor clothing; and to a method for manufacturing same.

COMPOSITE COOLING FILM COMPRISING A REFLECTIVE MICROPOROUS LAYER AND A UV-ABSORBING LAYER

A composite cooling film includes a reflective microporous layer that comprises a continous phase comprising an organic polymer, an ultraviolet-absorbing layer of organic polymeric material that is disposed outwardly of the reflective microporous layer, and an anti soiling layer being disposed outwardly of the reflective microporous layer.

METHODS FOR PROTECTING PORTABLE ELECTRONIC DEVICES

A protective film includes an adhesive material configured for “dry” application to a surface that is to be protected, such as the surface of an electronic device. An installation assembly that includes the protective film is configured to minimize or eliminate contact with the protective film as it is applied to the surface that is to be protected. Methods for manufacturing a protective film and an installation assembly that includes the protective film may be effected in contaminant-free conditions. Methods for applying the protective film are also disclosed, as are devices (e.g., electronic devices, etc.) with at least one surface covered with a protective film.

FLUORINE-FREE OIL REPELLENT COATING, METHODS OF MAKING SAME, AND USES OF SAME
20230038369 · 2023-02-09 ·

Provided are fluorine-free, oleophobic layers including one more or polydimethylsiloxane resin layers. The layers can be disposed on a portion of or all of a surface of a substrate. Also provided are methods of making and using same.

Urea (multi)-(meth)acrylate (multi)-silane compositions and articles including the same

Urea (multi)-(meth)acrylate (multi)-silane precursor compounds, synthesized by reaction of (meth)acrylated materials having isocyanate functionality with aminosilane compounds, either neat or in a solvent, and optionally with a catalyst, such as a tin compound, to accelerate the reaction. Also described are articles including a substrate, a base (co)polymer layer on a major surface of the substrate, an oxide layer on the base (co)polymer layer; and a protective (co)polymer layer on the oxide layer, the protective (co)polymer layer including the reaction product of at least one urea (multi)-(meth)acrylate (multi)-silane precursor compound synthesized by reaction of (meth)acrylated materials having isocyanate functionality with aminosilane compounds. The substrate may be a (co)polymer film or an electronic device such as an organic light emitting device, electrophoretic light emitting device, liquid crystal display, thin film transistor, or combination thereof. Methods of making the urea (multi)-(meth)acrylate (multi)-silanes and their use in composite films and electronic devices are described.