A polymer sheet includes a polyurethane core. The polyurethane core has a first major surface and a second major surface opposite the first major surface. The polymer sheet can have at least one functional layer overlying a major surface. The polymer sheet has a thickness t.sub.ps. The polyurethane core has a thickness t.sub.pc. In embodiments t.sub.pc can be at least 0.3 t.sub.ps. The polyurethane core can have at least one of the following property: (i) a Scratch Resistance Rating, as further described herein, of not greater than about 10 wt %, (ii) an elongation at break of at least 200%, (iii) a tensile strength at break of at least 0.3 MPa, (iv) a loss of tensile strength of not greater than about 30% when exposed to UV light according to standard SAE J1960 (Rev. August 2003). The polymer sheet can be used for gaskets or bonding tapes.

Described herein are resilient floor coverings produced by using digitally printed UV-cured inks and exhibiting high adhesion properties between an ink layer and a wear layer. Also described herein are methods for manufacturing same. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.

A keyboard membrane, which is a thin sheet molded object thermoformed by a thermoplastic wear-resistant molding membrane, comprising a plurality of concave-convex parts, the concave-convex part comprises a plurality of upwardly protruding pressing parts, each of the pressing parts has a top wall and a peripheral wall extending downward from a periphery of the top wall; the keyboard membrane is disposed on a key module with keys; each of the pressing parts is connected with one of the keys of the key module; a periphery of the keyboard membrane has a peripheral edge extending outward from the pressing part, and the peripheral edge wraps the key module to form a waterproof and dustproof keyboard.

A polymer sheet includes a polyurethane core. The polyurethane core has a first major surface and a second major surface opposite the first major surface. The polymer sheet can have at least one functional layer overlying a major surface. The polymer sheet has a thickness t.sub.PS. The polyurethane core has a thickness t.sub.PC. In embodiments t.sub.PC can be at least 0.3 t.sub.PS. The polyurethane core can have at least one of the following property: (i) a Scratch Resistance Rating, as further described herein, of not greater than about 10 wt %, (ii) an elongation at break of at least 200%, (iii) a tensile strength at break of at least 0.3 MPa, (iv) a loss of tensile strength of not greater than about 30% when exposed to UV light according to standard SAE J1960 (Rev. August 2003).

The polymer sheet can be used for gaskets or bonding tapes.

The present invention provides a method for producing an optical film excellent in anti-fouling properties and scratch resistance as well as anti-reflection properties. The method includes the steps of: (1) applying a lower layer resin and an upper layer resin; (2) forming a resin layer having the uneven structure on a surface thereof by pressing a mold against the lower layer resin and the upper layer resin from the upper layer resin side in the state where the applied lower layer resin and upper layer resin are stacked; and (3) curing the resin layer, the lower layer resin containing at least one kind of first monomer that contains no fluorine atoms, the upper layer resin containing a fluorine-containing monomer and at least one kind of second monomer that contains no fluorine atoms, at least one of the first monomer and the second monomer containing a compatible monomer that is compatible with the fluorine-containing monomer and being dissolved in the lower layer resin and the upper layer resin.

A polymer sheet includes a polyurethane core. The polyurethane core has a first major surface and a second major surface opposite the first major surface. The polymer sheet can have at least one functional layer overlying a major surface. The polymer sheet has a thickness t.sub.PS. The polyurethane core has a thickness t.sub.PC. In embodiments t.sub.PC can be at least 0.3 t.sub.PS. The polyurethane core can have at least one of the following property: (i) a Scratch Resistance Rating, as further described herein, of not greater than about 10 wt %, (ii) an elongation at break of at least 200%, (iii) a tensile strength at break of at least 0.3 MPa, (iv) a loss of tensile strength of not greater than about 30% when exposed to UV light according to standard SAE J1960 (Rev. August 2003).
The polymer sheet can be used for gaskets or bonding tapes.

The present invention provides is a lightweight environment-friendly polypropylene composite floor comprising, from top to bottom: 1) a scratch-resistant coating layer, 2) a super-transparent wear-resistant layer, 3) a decorative layer, 4) a first substrate layer, 5) a second substrate layer, 6) a bottom connective layer, and optionally 7) a back adhesive layer. Also provided is a preparation process of the composite floor.

A method for providing parts of waterproof and breathable shoes, parts of waterproof and breathable shoes provided with the method, and waterproof and breathable soles provided with the shoe parts. The method uses a mold including a first element and a second element, at least one of which has hollow regions of a matrix of impressions, which are filled with polymeric material in the fluid state by depositing it in the hollow regions or by injecting it while the mold is closed; a support made of flexible sheet is interposed between the first element and the second element and includes a waterproof and breathable functional element, on which, when the mold is closed, the polymeric material sets and adheres to the support.

The present invention addresses the issue of providing an acrylic resin composition having high weather resistance, flexibility, heat resistance, transparency, and stress-whitening resistance. This issue is solved by an acrylic resin composition containing a rubber-containing multi-stage polymer (I) containing at least 30% by mass of an elastic polymer (A).

A method for producing an optical film includes: (1) applying a lower layer resin and an upper layer resin; (2) forming a resin layer having the uneven structure on a surface thereof by pressing a mold against the lower layer resin and the upper layer resin from the upper layer resin side in the state where the applied lower layer resin and upper layer resin are stacked; and (3) curing the resin layer, the lower layer resin containing at least one kind of first monomer that contains no fluorine atoms, the upper layer resin containing a fluorine-containing monomer and at least one kind of second monomer that contains no fluorine atoms, at least one of the first monomer and the second monomer containing a compatible monomer that is compatible with the fluorine-containing monomer and being dissolved in the lower layer resin and the upper layer resin.