CN103832037A - Heat-preservation sound-absorption decorating plate and preparation method thereof - Google Patents
Heat-preservation sound-absorption decorating plate and preparation method thereof Download PDFInfo
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- CN103832037A CN103832037A CN201410072115.1A CN201410072115A CN103832037A CN 103832037 A CN103832037 A CN 103832037A CN 201410072115 A CN201410072115 A CN 201410072115A CN 103832037 A CN103832037 A CN 103832037A
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Abstract
The invention discloses a heat-preservation sound-absorption decorating plate and a preparation method thereof, belonging to the technical field of building materials. The heat-preservation sound-absorption decorating plate comprises a base plate, a surface layer and a bottom layer, wherein the base plate and the surface layer are spliced together through a PUR glue, and the other side of the base plate and the bottom layer are combined together; the base plate is made of PP fibers and fibrilia, the surface layer is made of a PP (propylene) film, a PVC (polyvinyl chloride) film or a PETG (polyethylene terephthalate glycol) film, and the bottom layer is made of non-woven fabric. The preparation method comprises the following steps of (1) mixing the PP fibers and the fibrilia, and preparing the PP fibers and the fibrilia into an original base plate by adopting an air laid method; (2) pressing one side of the original base plate and the bottom layer to prepare a double-layer plate; (3) carrying out corona and preheating on the surface of the base plate of the double-layer plate, and coating the PUR glue; and (4) fitting the surface layer and the surface of the base plate of the double-layer plate coated with the glue together. The heat preservation sound absorption decorating plate and the preparation method thereof provided by the invention have the advantages that asbestos, benzene and formaldehyde which are harmful to people are not contained, the light pollution of a yogon series product is avoided, and the production technology is environmentally friendly.
Description
Technical field
The invention belongs to building material technical field, particularly a kind of heat-insulating and sound-absorbing decorative panel and preparation method thereof.
Background technology
The materials such as current external wall and the multiplex great Bai of interior wall, emulsion paint, coating, all contain formaldehyde, are unfavorable for health; The also not environmental protection of the bonding needed cement sand of ceramic tile, also needs bricklayer to construct, and expense is larger, and does not possess the function of insulation and sound-absorbing.
Summary of the invention
The problems referred to above that exist technically with decorative panel for existing building, the invention provides a kind of heat-insulating and sound-absorbing decorative panel and preparation method thereof, adopt the not material containing formaldehyde, by the bonding decorative panel of making heat-insulating and sound-absorbing and environmental protection of air lay, compound suppressing and glued membrane.
Heat-insulating and sound-absorbing decorative panel of the present invention comprises substrate, superficial layer and bottom; The one side of substrate bonds together by PUR glue and superficial layer, and another side and the bottom of substrate combine; The material of described substrate is PP fiber and flaxen fiber, and wherein the percentage by weight of PP fiber is 30 ~ 70%, and all the other are flaxen fiber; The material of described superficial layer is PP film, PVC film or PETG film; Described bottom material is nonwoven.
Above-mentioned nonwoven is PET nonwoven or PP nonwoven.
Above-mentioned flaxen fiber refers to tossa, flax fiber, hemp, sisal fiber or ramee.
The thickness of above-mentioned bottom is 0.15 ~ 0.35mm.
The thickness of above-mentioned substrate is 2 ~ 5mm.
The thickness of above-mentioned superficial layer is 0.05 ~ 1mm.
The preparation method of heat-insulating and sound-absorbing decorative panel of the present invention carries out according to the following steps:
1, PP fiber and flaxen fiber are mixed, mixed proportion is 30 ~ 70% by the percentage by weight of PP fiber, and all the other are flaxen fiber; Adopt air lay method, under 150 ~ 180 ℃ of conditions, PP fiber and flaxen fiber are made to coiled material or sheet material, form original substrate;
2, using nonwoven as bottom, the one side of original substrate and bottom is under 180 ~ 220 ℃ of conditions of temperature, compressed together with trigger squeeze, make the doubling plate being formed by substrate and bottom; Pressing pressure is 1 ~ 8Bar;
3, the substrate surface of doubling plate is carried out to sided corona treatment, to the surface tension of the substrate surface of doubling plate be 38 ~ 42 dyne, be then preheated to 20 ~ 60 ℃, then apply one deck PUR glue at the substrate surface of doubling plate;
4, adopt PP film, PVC film or PETG film etc. as superficial layer, the substrate surface of the doubling plate of superficial layer and glue coated is fit together, make heat-insulating and sound-absorbing decorative panel.
In said method, the equipment adopting while adopting air lay method that PP fiber and flaxen fiber are made to coiled material or sheet material is air lay production line, and speed of production is 2 ~ 5m/min.
The equipment that in said method, sided corona treatment and laminating adopt is PUR facing machine.
In said method, the thickness of original substrate is 8 ~ 10mm.
Advantage of the present invention is:
1, environmental protection: raw material are mainly PP fiber and flaxen fiber, compares existing building material and can largely save the use of the non-renewable resources such as soil and mineral products, belongs to novel green building materials; Superficial layer adopts photocuring patented technology, greatly reduces exhaust emission, production technology environmental protection; Product itself is not containing harmful asbestos, benzene and formaldehyde, and sub-light series of products have been stopped light pollution, become environment-friendly materials first-selection;
2, good effect of heat insulation: thermal conductivity factor is at 0.045 ~ 0.059W/(mk), there is good heat preservation and energy conservation effects;
3, noise reduction sound-absorbing: flaxen fiber itself has good sound-absorbing and sound insulation function, this decorative panel can be brought into play its superior sound absorption qualities in the scope of 250 ~ 1000Hz;
4, anti-ageing, weather-proof: the anti-UV of surfacing, good weatherability, reaches more than 20 years service life, anti-fall, indeformable, thermal coefficient of expansion is low, do not rupture, colour-fast; Surface abrasion resistance, damage resistant, corrosion-resistant, moisture resistance, waterproof; Other dalles easily oxidation fade, are subject to acid rain corrosion;
5, chemical resistance: with PP film, the superficial layer that PVC film or PETG film etc. are material has good resistivity to most of soda acids and salting liquid;
6, waterproof, oil resistant dirt, easy to clean: with PP film, the superficial layer that PVC film or PETG film etc. are material has good waterproof and the dirty function of oil resistant, maintenance easy to clean; .
7, can saw and can dig, can do knuckle processing, thermoformable, construct convenient.Material is slim and graceful, and template is various, can arbitrarily cut; Easy-to-operate.Tossa in flaxen fiber is thicker, and rigidity and intensity are better than other flaxen fibers, therefore better with jute;
8, economic benefit aspect: stable material quality, durable in use, convenient, time and labour saving is installed, reach service life more than 20 years, compare compared with other ornament materials, save the expense of frequent maintenance renovation; Because the advantage that material is slim and graceful, being convenient to carrying can effectively shorten the construction period, saves cost of labor, increases work efficiency; Thermal-insulating type sheet material can save 40% for building air conditioning electricity consumption.
Accompanying drawing explanation
Fig. 1 is the heat-insulating and sound-absorbing decorative board structure schematic diagram in the embodiment of the present invention; In figure, 1, superficial layer, 2, PUR glue, 3, substrate, 4, bottom;
Fig. 2 is preparation method's schematic flow sheet of the heat-insulating and sound-absorbing decorative panel in the embodiment of the present invention.
The specific embodiment
The PP fiber adopting in the embodiment of the present invention specification be fiber number 3.33 ~ 15dtex, length is 51 ~ 70mm.
The diameter of the flaxen fiber adopting in the embodiment of the present invention is 7 ~ 11 μ m, and length is 50 ~ 70mm.
The PP fiber adopting in the embodiment of the present invention is commercial product.
Tossa, flax fiber, hemp, sisal fiber and the ramee adopting in the embodiment of the present invention is commercial product
The PP film adopting in the embodiment of the present invention, PVC film and PETG film are commercial product.
The PET nonwoven adopting in the embodiment of the present invention and PP nonwoven are commercial hot rolling spun-bonded non-woven fabrics.
The PUR glue adopting in the embodiment of the present invention is commercial product.
The equipment that in the embodiment of the present invention, air lay method adopts is Oerlikon Niu Mage (Filler) air lay production line.
In the embodiment of the present invention, be the compound press production line of German biobelt dusting with the equipment that trigger squeeze compacting Combined Mining is used.
The PUR facing machine adopting in the embodiment of the present invention is RTM1300 PUR facing machine.
The thermal conductivity factor of the heat-insulating and sound-absorbing decorative panel of preparing in the embodiment of the present invention is 0.045 ~ 0.059 W/(mk).
In the embodiment of the present invention, testing thermal conductivity factor is to be undertaken by the method for GB/T 1737-1998.
In the embodiment of the present invention, testing sound-absorbing soundproof effect is to be undertaken by the method for GB18696.1-2004.
The weight of the bottom of the heat-insulating and sound-absorbing decorative panel of preparing in the embodiment of the present invention is 10 ~ 80g/ ㎡, and the weight of substrate is 500 ~ 1500g/ ㎡, and the weight of superficial layer is 80 ~ 1200g/ ㎡.
Embodiment 1
PP fiber and flaxen fiber are mixed, and mixed proportion is 30% by the percentage by weight of PP fiber, and all the other are flaxen fiber; Adopt air lay method, under 150 ~ 180 ℃ of conditions, PP fiber and flaxen fiber are made to sheet material, form original substrate, thickness is 10mm; Speed of production when air lay is 3m/min;
Using PET nonwoven as bottom, the one side of original substrate and bottom are combined with trigger squeeze compacting under 180 ~ 220 ℃ of conditions of temperature, make the doubling plate being formed by substrate and bottom; Pressing pressure is 8Bar;
The substrate surface of doubling plate is carried out to sided corona treatment, to the surface tension of the substrate surface of doubling plate be 38 dyne, be then preheated to 40 ℃, then apply one deck PUR glue at the substrate surface of doubling plate;
Adopt PVC film as superficial layer, the substrate surface of the doubling plate of superficial layer and glue coated is fit together, make heat-insulating and sound-absorbing decorative panel;
The heat-insulating and sound-absorbing decorative panel of preparation comprises substrate, superficial layer and bottom; The one side of substrate bonds together by PUR glue and superficial layer, and another side and the bottom of substrate combine;
The weight of bottom is 50g/ ㎡, and thickness is 0.25mm; The weight of substrate is 500g/ ㎡, and thickness is 2mm; The weight of superficial layer is 80g/ ㎡, and thickness is 0.06mm;
The thermal conductivity factor of heat-insulating and sound-absorbing decorative panel is 0.048W/(mk); Under 250 ~ 1000Hz condition, test sound-absorbing soundproof effect, noise reduction coefficient is greater than 0.35.
Embodiment 2
Method is with embodiment 1, and difference is:
(1) mixed proportion of PP fiber and flaxen fiber is 40% by the percentage by weight of PP fiber, and all the other are flaxen fiber; Original substrate is the 9mm coiled material of thickness; Speed of production when air lay is 2m/min;
(2) using PP nonwoven as bottom; Trigger squeeze pressing pressure is 5Bar;
(3) substrate surface of doubling plate is carried out to sided corona treatment, to the surface tension of the substrate surface of doubling plate be 39 dyne, be then preheated to 50 ℃;
The weight of the bottom of the heat-insulating and sound-absorbing decorative panel of preparation is 60g/ ㎡, and thickness is 0.28mm; The weight of substrate is 1000g/ ㎡, and thickness is 3.5mm; The weight of PP superficial layer is 170g/ ㎡, and thickness is 0.18mm;
The thermal conductivity factor of heat-insulating and sound-absorbing decorative panel is 0.051W/(mk); Under 250 ~ 1000Hz condition, test sound-absorbing soundproof effect, noise reduction coefficient is greater than 0.35.
Method is with embodiment 1, and difference is:
(1) mixed proportion of PP fiber and flaxen fiber is 50% by the percentage by weight of PP fiber, and all the other are flaxen fiber; Original substrate is the 8mm of thickness; Speed of production when air lay is 3m/min;
(2) trigger squeeze pressing pressure is 1Bar;
(3) substrate surface of doubling plate is carried out to sided corona treatment, to the surface tension of the substrate surface of doubling plate be 40 dyne, be then preheated to 20 ~ 60 ℃;
The weight of the bottom of the heat-insulating and sound-absorbing decorative panel of preparation is 70g/ ㎡, and thickness is 0.31mm; The weight of substrate is 1500g/ ㎡, and thickness is 5mm; The weight of PP superficial layer is 120g/ ㎡, and thickness is 0.13mm;
The thermal conductivity factor of heat-insulating and sound-absorbing decorative panel is 0.053W/(mk); Under 250 ~ 1000Hz condition, test sound-absorbing soundproof effect, noise reduction coefficient is greater than 0.35.
Embodiment 4
Method is with embodiment 1, and difference is:
(1) mixed proportion of PP fiber and flaxen fiber is 60% by the percentage by weight of PP fiber, and all the other are flaxen fiber; Original substrate is the 10mm coiled material of thickness; Speed of production when air lay is 4m/min;
(2) using PP nonwoven as bottom; Trigger squeeze pressing pressure is 8Bar;
(3) substrate surface of doubling plate is carried out to sided corona treatment, to the surface tension of the substrate surface of doubling plate be 41 dyne, be then preheated to 30 ℃;
(4) adopt PP film as superficial layer;
The weight of the bottom of the heat-insulating and sound-absorbing decorative panel of preparation is 80g/ ㎡, and thickness is 0.35mm; The weight of substrate is 500g/ ㎡, and thickness is 2mm; The weight of superficial layer is 200g/ ㎡, and thickness is 0.22mm;
The thermal conductivity factor of heat-insulating and sound-absorbing decorative panel is 0.045W/(mk); Under 250 ~ 1000Hz condition, test sound-absorbing soundproof effect, noise reduction coefficient is greater than 0.35.
Embodiment 5
Method is with embodiment 1, and difference is:
(1) mixed proportion of PP fiber and flaxen fiber is 70% by the percentage by weight of PP fiber, and all the other are flaxen fiber; Original substrate is the 9mm of thickness; Speed of production when air lay is 5m/min;
(2) trigger squeeze pressing pressure is 5Bar;
(3) substrate surface of doubling plate is carried out to sided corona treatment, to the surface tension of the substrate surface of doubling plate be 42 dyne, be then preheated to 20 ℃; (because of season reason when room temperature is during lower than 20 ℃, be preheated to 20 ℃; )
(4) adopt PP film as superficial layer;
The weight of the bottom of the heat-insulating and sound-absorbing decorative panel of preparation is 50g/ ㎡, and thickness is 0.25mm; The weight of substrate is 1000g/ ㎡, and thickness is 3.5mm; The weight of superficial layer is 170g/ ㎡, and thickness is 0.18mm;
The thermal conductivity factor of heat-insulating and sound-absorbing decorative panel is 0.048W/(mk); Under 250 ~ 1000Hz condition, test sound-absorbing soundproof effect, noise reduction coefficient is greater than 0.35.
Embodiment 6
Method is with embodiment 1, and difference is:
(1) mixed proportion of PP fiber and flaxen fiber is 60% by the percentage by weight of PP fiber, and all the other are flaxen fiber; Original substrate is the 8mm coiled material of thickness; Speed of production when air lay is 2m/min;
(2) using PP nonwoven as bottom; Trigger squeeze pressing pressure is 3Bar;
(3) substrate surface of doubling plate is carried out to sided corona treatment, to the surface tension of the substrate surface of doubling plate be 38 dyne, be then preheated to 60 ℃;
(4) adopt PP film as superficial layer;
The weight of the bottom of the heat-insulating and sound-absorbing decorative panel of preparation is 60g/ ㎡, and thickness is 0.28mm; The weight of substrate is 1500g/ ㎡, and thickness is 5mm; The weight of superficial layer is 120g/ ㎡, and thickness is 0.13mm;
The thermal conductivity factor of heat-insulating and sound-absorbing decorative panel is 0.052W/(mk); Under 250 ~ 1000Hz condition, test sound-absorbing soundproof effect, noise reduction coefficient is greater than 0.35.
Embodiment 7
Method is with embodiment 1, and difference is:
(1) mixed proportion of PP fiber and flaxen fiber is 50% by the percentage by weight of PP fiber, and all the other are flaxen fiber; Original substrate is the 10mm of thickness; Speed of production when air lay is 4m/min;
(2) trigger squeeze pressing pressure is 8Bar;
(3) substrate surface of doubling plate is carried out to sided corona treatment, to the surface tension of the substrate surface of doubling plate be 39 dyne, be then preheated to 50 ℃;
(4) adopt PETG film as superficial layer;
The weight of the bottom of the heat-insulating and sound-absorbing decorative panel of preparation is 70g/ ㎡, and thickness is 0.31mm; The weight of substrate is 500g/ ㎡, and thickness is 2mm; The weight of superficial layer is 420g/ ㎡, and thickness is 0.45mm;
The thermal conductivity factor of heat-insulating and sound-absorbing decorative panel is 0.047W/(mk); Under 250 ~ 1000Hz condition, test sound-absorbing soundproof effect, noise reduction coefficient is greater than 0.35.
Embodiment 8
Method is with embodiment 1, and difference is:
(1) mixed proportion of PP fiber and flaxen fiber is 40% by the percentage by weight of PP fiber, and all the other are flaxen fiber; Original substrate is the coiled material of thickness 9mm; Speed of production when air lay is 5m/min;
(2) using PP nonwoven as bottom; Trigger squeeze pressing pressure is 5Bar;
(3) substrate surface of doubling plate is carried out to sided corona treatment, to the surface tension of the substrate surface of doubling plate be 40 dyne, be then preheated to 40 ℃;
(4) adopt PETG film as superficial layer;
The weight of the bottom of the heat-insulating and sound-absorbing decorative panel of preparation is 80g/ ㎡, and thickness is 0.35mm; The weight of substrate is 1000g/ ㎡, and thickness is 3.5mm; The weight of superficial layer is 320g/ ㎡, and thickness is 0.35mm;
The thermal conductivity factor of heat-insulating and sound-absorbing decorative panel is 0.059W/(mk); Under 250 ~ 1000Hz condition, test sound-absorbing soundproof effect, noise reduction coefficient is greater than 0.35.
Embodiment 9
Method is with embodiment 1, and difference is:
(1) mixed proportion of PP fiber and flaxen fiber is 30% by the percentage by weight of PP fiber, and all the other are flaxen fiber; The thickness of original substrate is 8mm; Speed of production when air lay is 3m/min;
(2) trigger squeeze pressing pressure is 1Bar;
(3) substrate surface of doubling plate is carried out to sided corona treatment, to the surface tension of the substrate surface of doubling plate be 42 dyne, be then preheated to 30 ℃;
(4) adopt PETG film as superficial layer;
The weight of the bottom of the heat-insulating and sound-absorbing decorative panel of preparation is 60g/ ㎡, and thickness is 0.28mm; The weight of substrate is 1500g/ ㎡, and thickness is 5mm; The weight of superficial layer is 1200g/ ㎡, and thickness is 1mm;
The thermal conductivity factor of heat-insulating and sound-absorbing decorative panel is 0.055W/(mk); Under 250 ~ 1000Hz condition, test sound-absorbing soundproof effect, noise reduction coefficient is greater than 0.35.
Embodiment 10
Method, with embodiment 1, is carried out 8 groups of tests simultaneously; Difference is:
(1) every two groups adopt respectively flax fiber, hemp, sisal fiber and ramee as flaxen fiber;
(2) one of flaxen fiber of the same race group adopts respectively PP nonwoven and PET nonwoven as bottom;
(3) adopt respectively PP film, PVC film and PETG film as superficial layer;
The thermal conductivity factor of the heat-insulating and sound-absorbing decorative panel of preparation is 0.045 ~ 0.059W/(mk) between; Under 250 ~ 1000Hz condition, test sound-absorbing soundproof effect, noise reduction coefficient is greater than 0.35.
Claims (9)
1. a heat-insulating and sound-absorbing decorative panel, comprises substrate, superficial layer and bottom; The one side that it is characterized in that substrate bonds together by PUR glue and superficial layer, and another side and the bottom of substrate combine; The material of described substrate is PP fiber and flaxen fiber, and wherein the percentage by weight of PP fiber is 30 ~ 70%, and all the other are flaxen fiber; The material of described superficial layer is PP film, PVC film or PETG film; Described bottom material is nonwoven.
2. a kind of heat-insulating and sound-absorbing decorative panel according to claim 1, is characterized in that described nonwoven is PET nonwoven or PP nonwoven.
3. a kind of heat-insulating and sound-absorbing decorative panel according to claim 1, is characterized in that described flaxen fiber refers to tossa, flax fiber, hemp, sisal fiber or ramee.
4. a kind of heat-insulating and sound-absorbing decorative panel according to claim 1, is characterized in that the thickness of described bottom is 0.15 ~ 0.35mm.
5. a kind of heat-insulating and sound-absorbing decorative panel according to claim 1, is characterized in that the thickness of described substrate is 2 ~ 5mm.
6. a kind of heat-insulating and sound-absorbing decorative panel according to claim 1, the thickness that it is characterized in that described superficial layer is 0.05 ~ 1mm.
7. a preparation method for heat-insulating and sound-absorbing decorative panel claimed in claim 1, is characterized in that carrying out according to the following steps:
(1) PP fiber and flaxen fiber are mixed, mixed proportion is 30 ~ 70% by the percentage by weight of PP fiber, and all the other are flaxen fiber; Adopt air lay method, under 150 ~ 180 ℃ of conditions, PP fiber and flaxen fiber are made to coiled material or sheet material, form original substrate;
(2) using nonwoven as bottom, the one side of original substrate and bottom is under 180 ~ 220 ℃ of conditions of temperature, compressed together with trigger squeeze, make the doubling plate being formed by substrate and bottom; Pressing pressure is 1 ~ 8Bar;
(3) substrate surface of doubling plate is carried out to sided corona treatment, to the surface tension of the substrate surface of doubling plate be 38 ~ 42 dyne, be then preheated to 20 ~ 60 ℃, then apply one deck PUR glue at the substrate surface of doubling plate;
(4) adopt PP film, PVC film or PETG film as superficial layer, the substrate surface of the doubling plate of superficial layer and glue coated is fit together, make heat-insulating and sound-absorbing decorative panel.
8. the preparation method of heat-insulating and sound-absorbing decorative panel according to claim 7, the equipment adopting while it is characterized in that adopting air lay method that PP fiber and flaxen fiber are made to coiled material or sheet material is air lay production line, speed of production is 2 ~ 5m/min.
9. the preparation method of heat-insulating and sound-absorbing decorative panel according to claim 7, is characterized in that the equipment that sided corona treatment and laminating adopt is PUR facing machine.
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| CN201410072115.1A CN103832037B (en) | 2014-02-28 | 2014-02-28 | A kind of heat-insulating and sound-absorbing decorative panel and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104262827A (en) * | 2014-09-09 | 2015-01-07 | 东莞市瀛通电线有限公司 | Preparation method of fiber composite material for signal cables and product thereof |
| CN106427260A (en) * | 2016-08-30 | 2017-02-22 | 天津达因建材有限公司 | Panel and preparing method thereof |
| CN109049279A (en) * | 2018-07-13 | 2018-12-21 | 贵州紫云月华新材料有限公司 | A kind of production method of sound insulation gypsum plate |
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| JPH1095060A (en) * | 1996-09-25 | 1998-04-14 | Kanebo Ltd | Automobile body panel insulator |
| CN1605462A (en) * | 2004-09-07 | 2005-04-13 | 江阴市延利塑料制品有限公司 | Environment-friendly type thermoplastic natural palm fibrilia composite base material for automobile interior decoration |
| CN103114696A (en) * | 2012-12-31 | 2013-05-22 | 苏州摩维天然纤维材料有限公司 | Environmental protection board for interior decoration and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH1095060A (en) * | 1996-09-25 | 1998-04-14 | Kanebo Ltd | Automobile body panel insulator |
| CN1605462A (en) * | 2004-09-07 | 2005-04-13 | 江阴市延利塑料制品有限公司 | Environment-friendly type thermoplastic natural palm fibrilia composite base material for automobile interior decoration |
| CN103114696A (en) * | 2012-12-31 | 2013-05-22 | 苏州摩维天然纤维材料有限公司 | Environmental protection board for interior decoration and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104262827A (en) * | 2014-09-09 | 2015-01-07 | 东莞市瀛通电线有限公司 | Preparation method of fiber composite material for signal cables and product thereof |
| CN106427260A (en) * | 2016-08-30 | 2017-02-22 | 天津达因建材有限公司 | Panel and preparing method thereof |
| CN109049279A (en) * | 2018-07-13 | 2018-12-21 | 贵州紫云月华新材料有限公司 | A kind of production method of sound insulation gypsum plate |
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| CN103832037B (en) | 2016-02-10 |
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Effective date of registration: 20230531 Address after: 111000 No. 166, Lantang Line, Dongning Wei Township, Taizihe District, Liaoyang City, Liaoning Province Patentee after: Liaoning Yimeng Zhiwang Carpet Co.,Ltd. Address before: 111000 Xinli Village, Dongning Wei Township, Taizihe District, Liaoyang City, Liaoning Province Patentee before: LIAOYANG YIMENG CARPET MANUFACTURING Co.,Ltd. |
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