CN211007497U - Sound-proof noise-reducing heat-insulating wooden floor - Google Patents
Sound-proof noise-reducing heat-insulating wooden floor Download PDFInfo
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- CN211007497U CN211007497U CN201921051332.7U CN201921051332U CN211007497U CN 211007497 U CN211007497 U CN 211007497U CN 201921051332 U CN201921051332 U CN 201921051332U CN 211007497 U CN211007497 U CN 211007497U
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Abstract
The utility model belongs to the technical field of ground paving materials, and relates to a sound-insulation, noise-reduction and heat-preservation wooden floor which is formed by gluing a wear-resistant decorative layer, a sound-insulation layer and a sound-absorption and heat-preservation layer from top to bottom, wherein the wear-resistant decorative layer is impregnated paper, a veneer of a UV curing paint veneer, a polypropylene PP film, an electron beam curing polypropylene EB film or a polyvinyl chloride PVC film and the like; the sound insulation layer is a high-density fiberboard or a multilayer plywood, and the thickness of the sound insulation layer is 6-18 mm; the heat-insulation sound-absorbing layer is made of high-molecular polymer foam materials and is 2-6 mm thick. The utility model discloses a give sound insulation and fall heat preservation wood system floor of making an uproar, simple structure adopts impregnated paper, UV solidification veneer or PP membrane, EB membrane, PVC membrane as wear-resisting decorative layer, HDF or multilayer plywood as the puigging, and high molecular polymer foam material is as inhaling the sound heat preservation. The utility model discloses a give sound insulation and fall thermal floor that makes an uproar has heat preservation, wear-resisting, gives sound insulation and falls the advantage of making an uproar, comfortable, the feel of foot is excellent, and striking sound insulation is less than 65 dB.
Description
Technical Field
The utility model belongs to the technical field of the material of mating formation on the ground, relate to wooden floor, especially relate to a heat preservation wood system floor of making an uproar falls in giving sound insulation.
Background
Wood flooring has been widely used as interior materials because of its characteristics such as beautiful appearance, comfortable feeling of feet, and excellent texture. However, if a common wood floor is directly paved on the surface of the cement concrete floor, noise is easily generated when people walk above the common wood floor, the life of people in the next floor is affected, and the sound insulation and noise reduction effects are difficult to achieve. When people work under the high-intensity working pressure condition, the requirements on the quality of quiet and comfortable working and living environments are high, and the requirements on the sound insulation effect of public places such as office buildings, hotels and the like are particularly high.
In order to achieve the heat preservation effect, in the prior art, the paved ground of the installation floor is treated, for example, CN105064656A, concrete is paved, the thickness of the concrete is ensured to be 30-40 mm, and meanwhile, trimming and pressing are carried out when the concrete is not condensed, so that the base layer is ensured to have no uneven parts; paving a foaming insulating layer when the foam insulation layer is not completely condensed after finishing, insulating by using an ethylene-vinyl acetate copolymer foaming plate, and forming the foaming insulating layer after condensation is carried out for 8-12 hours; paving an ultrafine concrete layer on the foamed insulating layer, and finishing and compacting after paving, wherein the setting time is 6-10 hours; after the lower superfine concrete layer is coagulated, laying a water pipe, and pouring the superfine light concrete on the water pipe for maintenance for 8-12 hours within 48 hours after the water pipe is laid and qualified through a water pressure test to form a filling layer; selecting volcanic rock according to parts by weight: cement: fine sand: the polycarboxylate water reducing agent is prepared into powder in a weight ratio of 1:2:6:0.5 thousandth, the solid is rolled and crushed by a high-pressure rolling device and then screened to obtain granular solid with a non-uniformity coefficient of 1.6-2.0, the powder and water are prepared into a honeycomb structure with adjacent hexagons according to a mold in a weight ratio of 1:1, the side length of each hexagon of the mold is 30-40 mm, the height of each hexagon of the mold is 20-30 mm, the thickness of each honeycomb structure is 10-20 mm, the honeycomb structure is sequentially arranged, when the edge cannot be formed into a hexagon, the honeycomb structure is filled with volcanic rock cement and then is coagulated, and the coagulation time is 6-10 hours; and after the condensation is finished, laying the floor to ensure that the floor is free from warping and shrinking. CN206205384U discloses a floor heat preservation structure, including cement terrace layer, cement terrace layer upside is the screed-coat, and the screed-coat upside is equipped with the bedding course, and the bedding course upside is laminate flooring or exempts from to coat with lacquer wood floor layer, be equipped with many parallel arrangement's recess on the upside of screed-coat.
In many specific occasions, such as locomotive rooms of special vehicles, passenger cars, passenger rooms of motor cars, airplanes and the like, the used floor is required to achieve high sound insulation effect; the locomotive cab floor device disclosed in CN205168509U has the functions of vibration reduction, sound insulation, noise reduction and heat preservation, and comprises a cab floor, a movable cross beam, a sealing strip and an adhesive sealant, wherein the movable cross beam is transversely positioned and installed on a locomotive body underframe through a bolt, and forms an annular supporting frame structure with the locomotive body underframe, the cab floor is placed on the movable cross beam, the sealing strip is filled in a gap between the periphery of the cab floor and the locomotive body, and the adhesive sealant is filled on the periphery of the cab floor and the sealing strip. CN202320536U discloses a strenghthened type passenger train floor, and it is laminated structure, including floor upper strata, middle sandwich layer and floor basic unit, the top surface of middle sandwich layer is connected with floor upper strata, and the bottom surface is connected with one side of floor basic unit, and the opposite side of floor basic unit is connected with the floor skeleton through the sponge bonding strip, and the manufacturing material of middle sandwich layer is pitch class damping, rubber class damping, heat preservation thermal-insulated cotton, glass fiber cotton felt, polyurethane foaming board or phenolic foam plastics, and the thickness of floor upper strata is 3-10 millimeters, and the thickness of middle sandwich layer is 1-5 millimeters, and the thickness of floor basic unit is 10-15 millimeters. CN204659112 discloses a passenger car floor with a sandwich structure, which is provided with a core material with the thickness of 7-20 mm and the density of 200-500 kg/m3(ii) a The upper surface and the lower surface of the core material are respectively provided with a core material with the thickness of 0.5-2.5 mm and the density of 1800-2200 kg/m3The surface layer of (1); the surface layer is a glass fiber fabric reinforced resin matrix composite material layer; the core material (1) and the surface layer (2) positioned on the upper surface and the lower surface of the core material are bonded into a whole to form the passenger car floor with the sandwich structure.
CN106218540A discloses a noise-reducing, sound-insulating and heat-insulating material plate, which comprises an activated carbon adsorption surface structure layer, wherein a second structure layer, a third structure layer and a fourth structure layer are sequentially arranged below the surface structure layer, the second structure layer and the third structure layer are combined in a covering manner, a plurality of cavities are formed after butt joint, and a vacuum ball for sound insulation is filled in each cavity; the second structural layer adopts porous attraction formula acoustic celotex board, and the third structural layer adopts perforation resonance sound absorption formula acoustic celotex board, and the fourth structural layer adopts film sound absorption formula acoustic celotex membrane. The surface structure layer, the second structure layer and the third structure layer are mutually bonded by hot melting; the third and fourth structural layers are bonded by adhesive, and can be used for plane metal parts of floors, ceilings, side walls, front and rear machine covers and the like of automobiles to absorb shock, insulate sound, reduce noise, preserve heat and reinforce. The sound-absorbing and sound-insulating composite material not only has sound insulation, heat insulation and flame retardance, but also can absorb shock, and the sound-absorbing and sound-insulating effects are greatly improved. CN107984858A discloses a fire-retardant type composite material floor with sound insulation function, composite material floor interlaminar structure includes covering, damping rubber layer, core, damping rubber layer and covering in proper order, wherein the damping rubber layer sets up between covering, core to respectively with covering, core bonding connection, the material of covering is continuous fibers reinforcing phenolic resin preimpregnation material, the material on damping rubber layer is the multicomponent damping rubber material of butadiene acrylonitrile rubber as the base member.
Disclosure of Invention
To the not enough of existence among the above-mentioned prior art, the utility model discloses a wooden floor that possesses good sound insulation and fall the heat preservation effect of making an uproar is disclosed in order to solve the not good problem of wooden floor sound insulation heat preservation effect.
The technical scheme is as follows:
a sound-insulation noise-reduction heat-insulation wooden floor is formed by gluing a wear-resistant decorative layer, a sound-insulation layer and a sound-absorption heat-insulation layer from top to bottom, wherein the wear-resistant decorative layer is impregnated paper, a veneer decorated by UV curing paint, a polypropylene PP film, an electron beam curing polypropylene EB film or a polyvinyl chloride PVC film and the like; the sound insulation layer is a High Density Fiberboard (HDF) or a multi-layer plywood, and the thickness of the sound insulation layer is 6-18 mm; the heat-insulation sound-absorbing layer is made of high-molecular polymer foam materials and is 2-6 mm thick.
The utility model discloses in the preferred disclosure case, be the impregnated paper when wear-resisting decorative layer, the impregnated wood grain decorative paper of spraying aluminium oxide promptly has surface effects such as synchronization line, hand hold line, relief (sculpture) line, forms with the puigging hot pressing under high pressure, high temperature, short period.
In the better disclosure example of the utility model, when the wear-resistant decorative layer is a single plate decorated with UV paint, the surface is processed by drawing, antiquing and other treatment processes, the thickness is 0.6-2.0 mm, and the single plate is a precious wood veneer, such as black walnut, oak, hickory nut and the like; the UV paint veneer and the sound insulation layer are formed by combining low-pressure, normal-temperature and long-period prepressing with low-pressure, high-temperature and short-period hot pressing through adhesives, and the glue application amount is 100-200 g/m2。
Further, the adhesive is urea-formaldehyde glue, melamine modified urea-formaldehyde glue, formaldehyde-free additive adhesive, such as acrylic adhesive, EPI adhesive, lignin-based adhesive or soybean gum and the like.
The utility model discloses in the preferred disclosure example, be PP membrane, EB membrane or PVC membrane when wear-resisting decorative layer, the surface has designs such as striae, synchronization line, relief (sculpture), has the surface effect that three-dimensional convex-concave decorated, thickness 0.1 ~ 0.5mm, and it forms through bonding under normal atmospheric temperature, the low pressure condition with puigging reaction type hot melt adhesive (PUR), and the volume of applying glue is 30 ~ 60g/m2。
The PP film has higher abrasion-resistant revolution number which is more than 2000r and is better than the limit value of the abrasion-resistant revolution number of a non-public place in L Y/T2716-2016 standard.
The utility model discloses in the preferred disclosure example, the puigging is high density fiberboard, and thickness 6 ~ 18mm, density 700 ~ 950kg/m3Preferably 9 to 15mm in thickness and 820 to 900kg/m in density3。
The 24h water absorption thickness expansion rate of the high-density fiberboard is less than or equal to 8 percent and is better than the value defined in L Y/T1611-2011 standard.
The utility model discloses in the better disclosure example, the puigging is the multilayer plywood, and used species of trees are eucalyptus, poplar or beech etc. thickness 10 ~ 15mm, and preferred species of trees are eucalyptus, thickness 11.5 ~ 14.5 mm.
The utility model discloses in the better disclosure example, heat preservation sound absorbing layer is high molecular polymer expanded material, including but not limited to polyurethane, polystyrene, polyethylene and ethylene-vinyl acetate copolymer etc. thickness 2 ~ 6mm, preferred 3 ~5 mm.
In the preferred embodiment of the present invention, the sound-insulating layer is formed of a metal materialThe heat-preservation sound-absorbing layer is formed by directly sticking a reactive hot melt adhesive (PUR) at normal temperature and normal pressure, the hot melt adhesive is directly sprayed on the back layer of the sound-insulating layer, and the glue application amount is 20-60 g/m2。
The high molecular polymer foam material has a porous structure, has an excellent sound absorption function, has a thermal conductivity coefficient lower than 0.05W/(m.k), and has a good heat preservation function.
The utility model discloses a mode that puigging and sound absorbing layer combined together makes the finished floor striking give sound insulation and reduces to below 65dB, and it is respond well to keep warm.
Advantageous effects
The utility model discloses a give sound insulation and fall heat preservation wood system floor of making an uproar, simple structure adopts impregnated paper, UV solidification veneer or PP membrane (polypropylene), EB membrane (electron beam solidification polypropylene), PVC membrane (polyvinyl chloride) etc. as wear-resisting decorative layer, HDF or multilayer plywood as the puigging, and polymer foaming materials such as polyurethane, polystyrene, polyethylene and ethylene-vinyl acetate copolymer are as inhaling sound heat preservation. Meanwhile, the sound-insulation noise-reduction heat-insulation floor has the advantages of heat insulation, wear resistance, sound insulation, noise reduction, comfortable foot feeling and excellent texture, and the impact sound insulation is lower than 65 dB.
Drawings
FIG. 1 is a schematic cross-sectional view of a sound-insulation noise-reduction heat-insulation floor, wherein 1 is a wear-resistant decorative layer, 2 is a sound-insulation layer, and 3 is a heat-insulation sound-absorption layer.
Detailed Description
The present invention will be described in detail with reference to the following examples so that those skilled in the art can better understand the present invention, but the present invention is not limited to the following examples.
Unless otherwise defined, terms (including technical and scientific terms) used herein should be construed to have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms used herein should be interpreted as having a meaning that is consistent with their meaning in the context of this specification and the relevant art, and should not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
Example 1
A sound-insulation noise-reduction heat-insulation wooden floor is formed by gluing a wear-resistant decorative layer 1, a sound-insulation layer 2 and a sound-absorption heat-insulation layer 3 from top to bottom, wherein the wear-resistant decorative layer 1 is formed by hot pressing impregnated paper with surface effects of synchronous grains, hand-grabbing grains or relief grains and the sound-insulation layer 2 at high pressure and high temperature in a short period, and the thickness is 0.6-2.0 mm; the sound insulation layer 2 is a high-density fiberboard with the density of 700-950 kg/m3The thickness is 9-15 mm; the heat-insulation sound-absorbing layer 3 is made of high-molecular polymer foaming materials including but not limited to polyurethane, polystyrene, polyethylene and ethylene-vinyl acetate copolymer, and the thickness of the heat-insulation sound-absorbing layer is 2-6 mm; the sound insulation layer 2 and the heat preservation and sound absorption layer 3 are formed by directly pasting reactive hot melt adhesive PUR at normal temperature and normal pressure, the hot melt adhesive is directly sprayed on the back layer of the sound insulation layer 2, and the glue application amount is 20-60 g/m2。
Example 2
The utility model provides a heat preservation wood floor that makes an uproar falls gives sound insulation, top-down is formed by wear-resisting decorative layer 1, puigging 2 and 3 plys of inhaling sound heat preservation, wherein, wear-resisting decorative layer 1 is the veneer surface of UV curing paint veneer through wire drawing or antique's processing procedure, and thickness is 0.6 ~ 2.0mm, the veneer is the oak, and passes through low pressure, normal atmospheric temperature, long period pre-compaction with the puigging 2 with the gluing agent and combine low pressure, high temperature, short period hot pressing to form, and the sizing amount is 100 ~ 200g/m2(ii) a The sound insulation layer 2 is a high-density fiberboard with the density of 700-950 kg/m3The thickness is 9-15 mm; the heat-insulation sound-absorbing layer 3 is made of high-molecular polymer foaming materials including but not limited to polyurethane, polystyrene, polyethylene and ethylene-vinyl acetate copolymer, and the thickness of the heat-insulation sound-absorbing layer is 2-6 mm; the sound insulation layer 2 and the heat preservation and sound absorption layer 3 are formed by directly pasting reactive hot melt adhesive PUR at normal temperature and normal pressure, the hot melt adhesive is directly sprayed on the back layer of the sound insulation layer 2, and the glue application amount is 20-60 g/m2。
Example 3
The utility model provides a heat preservation wood floor that makes an uproar falls gives sound insulation, and top-down is formed by wear-resisting decorative layer 1, puigging 2 and the veneer of inhaling sound heat preservation 3, wherein, wear-resisting decorative layer 1 is polypropylene PP membrane, electron beam curing polypropylene EB membrane or polyvinyl chloride PVC membrane, and the surfaceHas the design of transverse lines, synchronous lines or embossments, has the surface effect of three-dimensional convex-concave decoration, has the thickness of 0.1-0.5 mm, is formed by bonding the sound-proof layer 2 with reactive hot melt adhesive PUR under the conditions of normal temperature and low pressure, and has the glue application amount of 30-60 g/m2(ii) a The sound insulation layer 2 is a multilayer plywood, the tree species are eucalyptus, and the thickness is 10-15 mm; the heat-insulation sound-absorbing layer 3 is made of high-molecular polymer foaming materials including but not limited to polyurethane, polystyrene, polyethylene and ethylene-vinyl acetate copolymer, and the thickness of the heat-insulation sound-absorbing layer is 2-6 mm; the sound insulation layer 2 and the heat preservation and sound absorption layer 3 are formed by directly pasting reactive hot melt adhesive PUR at normal temperature and normal pressure, the hot melt adhesive is directly sprayed on the back layer of the sound insulation layer 2, and the glue application amount is 20-60 g/m2。
Example 4
A sound-insulation noise-reduction heat-insulation wooden floor is formed by gluing a wear-resistant decorative layer 1, a sound-insulation layer 2 and a sound-absorption heat-insulation layer 3 from top to bottom, wherein the wear-resistant decorative layer 1 is a single plate surface decorated by UV curing paint, the thickness of the single plate surface is 0.6-2.0 mm through a wire drawing or antique processing procedure, and the single plate is black walnut; the UV paint veneer and the sound insulation layer 2 are formed by combining low-pressure, normal-temperature and long-period prepressing with low-pressure, high-temperature and short-period hot pressing through adhesives, and the glue application amount is 100-200 g/m2(ii) a The sound insulation layer 2 is made of eucalyptus wood of a multi-layer plywood tree species, and the thickness of the sound insulation layer is 11.5-14.5 mm; the heat-insulation sound-absorbing layer 3 is made of high-molecular polymer foaming materials including but not limited to polyurethane, polystyrene, polyethylene and ethylene-vinyl acetate copolymer, and the thickness of the heat-insulation sound-absorbing layer is 2-6 mm; the sound insulation layer 2 and the heat preservation and sound absorption layer 2 are formed by directly pasting reactive hot melt adhesive PUR at normal temperature and normal pressure, the hot melt adhesive is directly sprayed on the back layer of the sound insulation layer 2, and the glue application amount is 20-60 g/m2。
Example 5
The utility model provides a heat preservation wood system floor of making an uproar falls in giving sound insulation, top-down is formed by wear-resisting decorative layer 1, puigging 2 and the veneer of inhaling sound heat preservation 3, wherein, wear-resisting decorative layer 1 is polypropylene PP membrane, electron beam curing polypropylene EB membrane or polyvinyl chloride PVC membrane, and the surface has the design of band, synchronization line or relief (sculpture), has the surface effect of three-dimensional convex-concave decoration, and thickness 0.1 ~ 0.5mm, and it passes through reaction type hot melt adhesive PUR at normal atmospheric temperature, low with puigging 2 andis bonded under pressure, and the glue application amount is 30-60 g/m2(ii) a The sound insulation layer 2 is made of a plurality of layers of plywood and is made of poplar, and the thickness of the sound insulation layer is 11.5-14.5 mm; the heat-insulation sound-absorbing layer 3 is made of high-molecular polymer foaming materials including but not limited to polyurethane, polystyrene, polyethylene and ethylene-vinyl acetate copolymer, and the thickness of the heat-insulation sound-absorbing layer is 2-6 mm; the sound insulation layer 2 and the heat preservation and sound absorption layer 2 are formed by directly pasting reactive hot melt adhesive PUR at normal temperature and normal pressure, the hot melt adhesive is directly sprayed on the back layer of the sound insulation layer 2, and the glue application amount is 20-60 g/m2。
Example 6
The utility model provides a heat preservation wood floor that makes an uproar falls gives sound insulation, top-down is formed by wear-resisting decorative layer 1, puigging 2 and the veneer of inhaling sound heat preservation 3, wherein, wear-resisting decorative layer 1 is polypropylene PP membrane, electron beam curing polypropylene EB membrane or polyvinyl chloride PVC membrane, and the surface has the design of band, synchronization line or relief (sculpture), has the surface effect of three-dimensional convex-concave decoration, and thickness 0.1 ~ 0.5mm, and it forms through the bonding of reaction type hot melt adhesive PUR under normal atmospheric temperature, low pressure condition with puigging 2, and the sizing volume is 30 ~ 60g/m2(ii) a The sound insulation layer 2 is made of a plurality of layers of plywood trees, and the thickness of the sound insulation layer is 11.5-14.5 mm; the heat-insulation sound-absorbing layer 3 is made of high-molecular polymer foaming materials including but not limited to polyurethane, polystyrene, polyethylene and ethylene-vinyl acetate copolymer, and the thickness of the heat-insulation sound-absorbing layer is 2-6 mm; the sound insulation layer 2 and the heat preservation and sound absorption layer 2 are formed by directly pasting reactive hot melt adhesive PUR at normal temperature and normal pressure, the hot melt adhesive is directly sprayed on the back layer of the sound insulation layer 2, and the glue application amount is 20-60 g/m2。
It is only above the embodiment of the utility model, not therefore the restriction the utility model discloses a patent range, all utilize the utility model discloses equivalent structure or equivalent flow transform that the specification was done, or direct or indirect application is in other relevant technical field, all including on the same reason the utility model discloses an in the patent protection scope.
Claims (9)
1. The utility model provides a heat preservation wood system floor of making an uproar falls gives sound insulation, top-down forms its characterized in that by wear-resisting decorative layer (1), puigging (2) and heat preservation sound absorbing layer (3) veneer: the wear-resistant decorative layer (1) is impregnated paper, a veneer decorated by UV curing paint, a polypropylene PP film, an electron beam curing polypropylene EB film or a polyvinyl chloride PVC film; the sound insulation layer (2) is a high-density fiberboard or a multilayer plywood, and the thickness is 6-18 mm; the heat-insulation sound-absorbing layer (3) is made of high-molecular polymer foam material and has the thickness of 2-6 mm.
2. The sound-insulating, noise-reducing and heat-insulating wooden floor as claimed in claim 1, wherein: the wear-resistant decorative layer (1) is a veneer decorated by UV paint, the thickness of the veneer is 0.6-2.0 mm, and the veneer is precious wood veneer such as black walnut, oak and hickory.
3. The sound-insulating, noise-reducing and heat-insulating wooden floor as claimed in claim 1, wherein: the wear-resistant decorative layer (1) is a PP film, an EB film or a PVC film, the surface of the wear-resistant decorative layer is provided with transverse grains, synchronous grains or embossments, the wear-resistant decorative layer has a surface effect of three-dimensional convex-concave decoration, and the thickness of the wear-resistant decorative layer is 0.1-0.5 mm.
4. The sound-insulating, noise-reducing and heat-insulating wooden floor as claimed in claim 1, wherein: the sound insulation layer (2) is a high-density fiberboard with the thickness of 6-18 mm and the density of 700-950 kg/m3。
5. The sound-insulating, noise-reducing and heat-insulating wooden floor as claimed in claim 4, wherein: the sound insulation layer (2) is a high-density fiberboard with the thickness of 9-15 mm and the density of 820-900 kg/m3。
6. The sound-insulating, noise-reducing and heat-insulating wooden floor as claimed in claim 1, wherein: the sound insulation layer (2) is a multilayer plywood, the tree species are eucalyptus, poplar or beech, and the thickness is 10-15 mm.
7. The sound-insulating, noise-reducing and heat-insulating wooden floor as claimed in claim 6, wherein: the soundproof layer (2) is multilayer plywood, and the used tree species is eucalyptus, and thickness 11.5 ~ 14.5 mm.
8. The sound-insulating, noise-reducing and heat-insulating wooden floor as claimed in claim 1, wherein: the heat-preservation sound-absorbing layer (3) is made of high-molecular polymer foaming materials, including but not limited to polyurethane, polystyrene, polyethylene and ethylene-vinyl acetate copolymer, and the thickness of the heat-preservation sound-absorbing layer is 2-6 mm.
9. The sound-insulating, noise-reducing and heat-insulating wooden floor as claimed in claim 1, wherein: the thickness of the heat-preservation sound-absorbing layer (3) is 3-5 mm.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110284690A (en) * | 2019-07-08 | 2019-09-27 | 圣象实业（江苏）有限公司 | Sound insulation and noise reduction heat-insulation wood floor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110284690A (en) * | 2019-07-08 | 2019-09-27 | 圣象实业（江苏）有限公司 | Sound insulation and noise reduction heat-insulation wood floor |
| CN110284690B (en) * | 2019-07-08 | 2024-03-26 | 圣象实业（江苏）有限公司 | Sound-proof noise-reducing heat-insulating wooden floor |
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