Provided is a resin molded body capable of increasing a flexural modulus. A resin molded body according to the present invention includes a urethane resin, long reinforcing fibers, an inorganic filler having an average particle diameter of 1 μm or more, and fine inorganic particles having an average particle diameter of 200 nm or less, a content of the fine inorganic particles being 0.06 parts by weight or more and 3.00 parts by weight or less with respect to 100 parts by weight of the urethane resin.

A fastener comprising a polymer composition [composition (C)] comprising at least one polyaryletherketone polymer [(PAEK) polymer], and at least one nitride (NI) of an element having an electronegativity (ε) of from 1.3 to 2.5, as listed in <<Handbook of Chemistry and Physics>>, CRC Press, 64.sup.th edition, pages B-65 to B-158, based on the total weight of the composition (C).

The invention relates to a device comprising: a first layer (11) of a thermoformable material that is inelastically deformable in a thermoforming temperature range, a second layer (1) of a viscoelastic material that is elastically deformable in a temperature range including a use temperature range of the device and the thermoforming temperature range, and wherein: the use temperature range is lower than the thermoforming temperature range, the first layer is bonded to the second layer, the thermoformable material is elastically deformable and more rigid than the viscoelastic material in the use temperature range, the thermoformable material is less rigid than the viscoelastic material in the thermoforming temperature range.

In a groove-formed body, a recess and protrusions are formed on a resin plate by irradiation with a laser. When forming the recess and the protrusions on the resin plate, the laser is irradiated onto the resin plate plural times. Irradiation of the laser onto the resin plate is thus temporarily paused to cool the resin plate, enabling the portion of the resin plate irradiated by the laser to be suppressed from igniting and enabling a depth dimension of the recess and a height dimension of the protrusions to be made larger.