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Provided is a sound absorption sheet comprising: a porous substrate; and a micro-resonance layer having a pattern of a plurality of sound-absorbing holes penetrating both surfaces thereof. Also provided is a sound absorbing soundproofing panel, the exterior surface of which is covered with the sound

Provided is a sound absorption sheet comprising: a porous substrate; and a micro-resonance layer having a pattern of a plurality of sound-absorbing holes penetrating both surfaces thereof. Also provided is a sound absorbing soundproofing panel, the exterior surface of which is covered with the sound absorption sheet comprising: the porous substrate; and the micro-resonance layer having a pattern of a plurality of sound-absorbing holes penetrating both surfaces thereof.

대표청구항 ▼

1. A sound absorption sheet comprising: a porous substrate; anda micro-resonance layer formed with a plurality of patterned sound absorption holes penetrating both surfaces thereof,wherein the porous substrate comprises glass fibers,wherein the glass fibers have a fiber diameter of 5 μm to 20 μm and

1. A sound absorption sheet comprising: a porous substrate; anda micro-resonance layer formed with a plurality of patterned sound absorption holes penetrating both surfaces thereof,wherein the porous substrate comprises glass fibers,wherein the glass fibers have a fiber diameter of 5 μm to 20 μm and a fiber length of 1 mm to 50 mm, andwherein the porous substrate has a basis weight of 50˜80 g/m2. 2. The sound absorption sheet according to claim 1, wherein the micro-resonance layer formed with the plurality of patterned sound absorption holes has an embossed pattern. 3. The sound absorption sheet according to claim 2, wherein the embossed pattern is formed by arranging shapes selected from among a polygonal shape, a circular shape, an oval shape, and combinations thereof. 4. The sound absorption sheet according to claim 2, wherein the embossed pattern comprises a stripe pattern. 5. The sound absorption sheet according to claim 1, wherein the sound absorption holes have a shape selected from among a polygonal shape, a circular shape, an oval shape, and combinations thereof. 6. The sound absorption sheet according to claim 1, wherein the sound absorption holes comprise a stripe pattern. 7. The sound absorption sheet according to claim 1, wherein the sound absorption holes have an average diameter of 0.1 mm to 20 mm. 8. The sound absorption sheet according to claim 1, wherein a ratio of the sound absorption holes per unit area ranges from 1% to 60%. 9. The sound absorption sheet according to claim 1, wherein a pitch between sound absorption holes ranges from 0.5 mm to 50 mm. 10. The sound absorption sheet according to claim 1, wherein the micro-resonance layer has a thickness of 100 μm to 1500 μm. 11. The sound absorption sheet according to claim 1, wherein the micro-resonance layer is formed by printing. 12. The sound absorption sheet according to claim 1, wherein the micro-resonance layer comprises at least one selected from among a vinyl chloride sol, a urethane resin, an acrylic resin, and a vinyl resin. 13. The sound absorption sheet according to claim 1, wherein the porous substrate has an average pore size of 5 μm to 50 μm. 14. The sound absorption sheet according to claim 1, wherein the porous substrate has a porosity of 30% to 80%. 15. A sound absorption type soundproofing panel including the sound absorption sheet according to claim 1, wherein an outer surface of a sound absorbing material is covered with the sound absorption sheet. 16. The sound absorption type soundproofing panel according to claim 15, wherein the sound absorbing material includes at least one selected from among a porous plate, an organic material, an inorganic material, a natural material, a thermoplastic resin matrix, and a thermosetting resin matrix. 17. The sound absorption sheet according to claim 1, wherein the cellulose fibers are pulp, and the synthetic organic fibers are PET. 18. The sound absorption sheet according to claim 1, wherein the porous substrate comprises 40% of glass fibers, 55% of pulp, and 5% of PET fibers. 19. A sound absorption sheet comprising: a porous substrate; anda micro-resonance layer formed with a plurality of patterned sound absorption holes penetrating both surfaces thereof,wherein the porous substrate comprises glass fibers, and at least one of cellulose fibers or synthetic organic fibers.