CN110206262A - A kind of surface layer is the compound wooden floor and preparation method of PP film - Google Patents
A kind of surface layer is the compound wooden floor and preparation method of PP film Download PDFInfo
- Publication number
- CN110206262A CN110206262A CN201910330440.6A CN201910330440A CN110206262A CN 110206262 A CN110206262 A CN 110206262A CN 201910330440 A CN201910330440 A CN 201910330440A CN 110206262 A CN110206262 A CN 110206262A
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- Prior art keywords
- film
- layer
- substrate layer
- preparation
- wooden floor
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 150000001875 compounds Chemical class 0.000 title claims abstract description 31
- 238000002360 preparation method Methods 0.000 title claims abstract description 26
- 239000002344 surface layer Substances 0.000 title claims abstract description 21
- 239000010410 layer Substances 0.000 claims abstract description 74
- 239000000758 substrate Substances 0.000 claims abstract description 54
- 239000004831 Hot glue Substances 0.000 claims abstract description 19
- 239000002023 wood Substances 0.000 claims abstract description 12
- 239000011248 coating agent Substances 0.000 claims abstract description 9
- 238000000576 coating method Methods 0.000 claims abstract description 9
- 239000002131 composite material Substances 0.000 claims abstract description 8
- 238000005253 cladding Methods 0.000 claims abstract description 5
- 239000012528 membrane Substances 0.000 claims abstract description 4
- 238000006748 scratching Methods 0.000 claims abstract description 3
- 230000002393 scratching Effects 0.000 claims abstract description 3
- 229920002396 Polyurea Polymers 0.000 claims abstract 8
- 239000000853 adhesive Substances 0.000 claims description 12
- 230000001070 adhesive Effects 0.000 claims description 12
- 239000003292 glue Substances 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 11
- 229920005610 lignin Polymers 0.000 claims description 6
- 240000007842 Glycine max Species 0.000 claims description 4
- 235000010469 Glycine max Nutrition 0.000 claims description 4
- 238000004026 adhesive bonding Methods 0.000 claims description 3
- 239000011120 plywood Substances 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 230000001143 conditioned Effects 0.000 claims description 2
- 238000007711 solidification Methods 0.000 claims description 2
- 229920001155 polypropylene Polymers 0.000 description 68
- 239000004743 Polypropylene Substances 0.000 description 67
- 239000004814 polyurethane Substances 0.000 description 21
- WSFSSNUMVMOOMR-UHFFFAOYSA-N formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 13
- 235000019256 formaldehyde Nutrition 0.000 description 8
- 238000005034 decoration Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 229960004279 formaldehyde Drugs 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 239000011094 fiberboard Substances 0.000 description 4
- 230000000903 blocking Effects 0.000 description 3
- 235000012970 cakes Nutrition 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 241000785686 Sander Species 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009408 flooring Methods 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229920005992 thermoplastic resin Polymers 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N AI2O3 Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 241000219495 Betulaceae Species 0.000 description 1
- 240000001200 Eucalyptus globulus Species 0.000 description 1
- 235000004694 Eucalyptus leucoxylon Nutrition 0.000 description 1
- 235000010705 Eucalyptus maculata Nutrition 0.000 description 1
- 235000009683 Eucalyptus polybractea Nutrition 0.000 description 1
- 235000009687 Eucalyptus sargentii Nutrition 0.000 description 1
- 235000010099 Fagus sylvatica Nutrition 0.000 description 1
- 240000000731 Fagus sylvatica Species 0.000 description 1
- 241000233855 Orchidaceae Species 0.000 description 1
- 241000219000 Populus Species 0.000 description 1
- 238000005296 abrasive Methods 0.000 description 1
- 229920003180 amino resin Polymers 0.000 description 1
- 235000018185 birch Nutrition 0.000 description 1
- 235000018212 birch Nutrition 0.000 description 1
- KXDHJXZQYSOELW-UHFFFAOYSA-M carbamate Chemical compound NC([O-])=O KXDHJXZQYSOELW-UHFFFAOYSA-M 0.000 description 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000006757 chemical reactions by type Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 235000001612 eucalyptus Nutrition 0.000 description 1
- 235000001617 eucalyptus Nutrition 0.000 description 1
- 235000001621 eucalyptus Nutrition 0.000 description 1
- 235000006356 eucalyptus Nutrition 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 230000001681 protective Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 235000005227 red mallee Nutrition 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27D—WORKING VENEER OR PLYWOOD
- B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
- B27D1/04—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefrom; Plywood sheets
- B27D1/08—Manufacture of shaped articles; Presses specially designed therefor
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/02—Flooring or floor layers composed of a number of similar elements
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/02—Flooring or floor layers composed of a number of similar elements
- E04F15/04—Flooring or floor layers composed of a number of similar elements only of wood or with a top layer of wood, e.g. with wooden or metal connecting members
- E04F15/045—Layered panels only of wood
- E04F15/046—Plywood panels
Abstract
The invention proposes compound wooden floors and preparation method that a kind of surface layer is PP film, which includes step 101, the preparation of composite wood substrate layer；Step 102, substrate layer I is formed；And step 103, the PP film with a thickness of 0.1~0.5mm is prepared, PP film surface is decorative ink layer and hard conating；Step 104, PP film is cut according to the specification that substrate layer I is coated, is cut into rouleau, PP film width is slightly larger than the width of substrate layer I；Step 105, required PP film is placed on coating equipment, PP back of the membrane is attached on substrate layer I and using pinch roller in surface roll-in immediately after uniformly scratching PUR hot melt adhesive, is combined together PP film with substrate layer I；Step 106, the slab after cladding is subjected to health, react PUR hot melt adhesive sufficiently and solidifies to get to the compound wooden floor of surface layer PP film, the floor is light, comfortable foot feeling, and extremely environmental protection.
Description
Technical field
The present invention relates to compound wooden floors and preparation method that timber floor field more particularly to a kind of surface layer are PP film.
Background technique
Consolidated floor is a kind of common ground decoration finishing material, it is generally the case that laminated flooring is with one layer or more
Layer dedicated paper impregnates thermoset amino resin, mats formation in the wood-based plates substrate surface such as particieboard, high density fiberboard, the back side adds flat
Weigh layer, front plus wearing layer, through hot pressing, molding.
To guarantee that consolidated floor has preferable stability and physicochemical property, floor surface wearing layer has a large amount of three oxidation
Two alumina particles, and its particieboard or fiberboard substrate density are larger, cause consolidated floor matter hard, cannot give the comfortable feel of people.
A large amount of adhesive is also used in the production process of consolidated floor, a large amount of Form aldehyde releases of generation can make the producer and user
At harm.
The utility model patent of Publication No. CN207775141U discloses a kind of PP film decoration panel, includes substrate
Layer, PP film, adhesive, wherein the cutting of PP film is placed in the top surface of substrate layer, and PP film carries on the back painting processing by corona and coats PUR glue again
Water, PP film are combined into one with substrate layer materials at two layers by PUR glue and coating equipment roll-in, and PP film is surface band decoration
The PP film in face.PP film is adhered on high density fiberboard substrate in the patent, plate matter is hard, is not suitable for paving ground, only
It is used for furniture kitchen cabinet decoration, and the preparation process of fiberboard need to use a large amount of adhesive, not environmentally.
Summary of the invention
The purpose of the present invention is to provide compound wooden floors and preparation method that a kind of surface layer is PP film, are used for interior
Ground decoration, light, comfortable foot feeling, and it is extremely environmentally friendly.
To achieve the above object, the technical scheme adopted by the invention is as follows: a kind of surface layer is the compound wooden floor of PP film
Preparation method comprising:
Step 101, the preparation of composite wood substrate layer: by one or more fast growing woods (Eucalyptus, beech, poplar, birch
Deng) rotary cut venner uniform gluing after be hot pressed into glued board or laminated veneer lumber, adhesive used is environmental-protection type adhesive；
Step 102, substrate layer I is formed: after overbalance is dry, solid wood composite base material layer being cut into equal small of width
Piece is milled out tongue-and-groove in surrounding with fluting apparatus, is stacked again after stringent inspection wait wrap after the fixed thick sanding of sander
It covers；
Step 103, the PP film with a thickness of 0.1~0.5mm is prepared, PP film surface is decorative ink layer and hard conating；
Step 104, PP film is cut according to the specification that substrate layer I is coated, is cut into rouleau, PP film width is slightly larger than base
The width of material layer I；
Step 105, required PP film is placed on coating equipment, PP back of the membrane is stood after uniformly scratching PUR hot melt adhesive
It is attached on substrate layer I and using pinch roller in surface roll-in, is combined together PP film with substrate layer I；
Step 106, the slab after cladding is subjected to health, PUR hot melt adhesive is made to react solidification sufficiently to get finished product is arrived.
A kind of surface layer provided by the invention is PUR hot melt in the step 105 of the preparation method of the compound wooden floor of PP film
The coating weight of glue requires 35~60g/ ㎡.
In a kind of step 106 of the surface layer provided by the invention for the preparation method of the compound wooden floor of PP film, health
Temperature, humidity, time are as follows: 15 DEG C~35 DEG C of health temperature, health humidity 50%~80%, conditioned time >=for 24 hours.
It is the compound wooden floor of PP film using the surface layer that aforementioned preparation process is prepared comprising: substrate layer I, PP
Film decorative layer；The PP film decorative layer is coated on the top surface of the substrate layer I, and PP film decorative layer and substrate layer I pass through PUR heat
Melten gel cementation is combined into one.
In compound wooden floor provided by the invention, the substrate layer I is the multilayer prepared using Environment-friendlyadhesive adhesive
Glued board or lamina product material.
In compound wooden floor provided by the invention, the adhesive is lignin glue or rubber made from soybean cake.
In compound wooden floor provided by the invention, the PP film decorative layer uses the PP film of 0.1~0.5mm, described
PP film surface is provided with decorative ink and hard conating.
In compound wooden floor provided by the invention, the coating weight of the PUR hot melt adhesive is 35-60g/ ㎡.
In compound wooden floor provided by the invention, the PP film decorative layer, which has, extends to prolonging for the side substrate layer I
Extending portion point, the extension is incorporated into substrate layer I by PUR hot melt adhesive.
Compared with prior art, advantages of the present invention are as follows:
1. surface layer provided by the invention is the preparation method of the compound wooden floor of PP film, raw material used all extremely rings
It protects, the preparation process and use process of product will not cause damages to environment and human body.PUR hot melt adhesive is without any organic molten
Agent, solid content 100% are environmentally protective；PP film is degradable when recycling, and when burning only discharges water and carbon dioxide, does not generate any
Toxic gas.
2. surface layer provided by the invention is the preparation method of the compound wooden floor of PP film, PP film good moldability and price compared with
Low, PUR hot melt adhesive curing rate block and adhesion strength are big, it can be achieved that continuous production, throughput rate block.
3. in the obtained product of the preparation method provided through the invention, floor burst size of methanal≤0.05mg/m3, far
Lower than requirements of the national standard 0.124mg/m3。
4. polypropylene (PP) comprehensive performance is good, such as mechanical performance, heat resistance, fatigue durability, chemical corrosion resistance and electricity
Insulating properties etc., floor of the present invention are likewise supplied with excellent comprehensive performance.
5. the PP film that the present invention uses is light thermoplastic resin, it is coated on solid wood composite base material surface, floor feel
It is extremely comfortable.
6.PP film is coated on floor surface, has outstanding closure, there is the function for blocking vapor, blocking Form aldehyde release
Can, the waterproof and dampproof and feature of environmental protection is prominent.
Detailed description of the invention
Fig. 1 be in first embodiment of the invention a kind of surface layer be PP film compound wooden floor preparation method process
Figure.
Fig. 2 is the compound wooden floor structural schematic diagram that a kind of surface layer is PP film in second embodiment of the invention.
Specific embodiment
The technical solution adopted in the present invention is further described below in conjunction with schematic diagram.
Relational language is explained as follows in the present invention:
PP: polypropylene (Polypropylene) is a kind of thermoplastic resin as prepared by propylene polymerization.
PUR (Polyurethane Reactive): moisture-curable reaction type polyurethane hot-melt adhesive, by isocyanates and more
A kind of polymer with carbamate segment constitutional repeating unit made of first alcohol reaction.
Embodiment 1: referring to Fig. 1, a kind of surface layer is the preparation method of the compound wooden floor of PP film comprising: step
101, the preparation of composite wood substrate layer: after 7 layers of solid wood rotary cut venner gluing, the slab that is made into a crisscross manner by grain direction
Plywood substrate is prepared, substrate specification is 1220*1300*15.2mm, and adhesive is lignin glue or rubber made from soybean cake, wherein lignin glue
For lignin adhesive.
Step 102, substrate layer I molding: substrate balance is dry to moisture content 6% -12%, cut into 1220*160*
The small pieces of 15.2mm are obtained using sander, the thick sanding fixed to substrate of 150 mesh abrasive bands using the bold and generous fluting apparatus mortice opening in golden field
To the specification of 1200*150*15mm.
Step 103 prepares PP film: preparing PP film of the surface with decorative ink and hard conating with a thickness of 0.2mm.
Step 104, the cutting of PP film: PP film is cut according to the specification that substrate layer I is coated, is cut into rouleau, PP film is wide
Degree is slightly larger than the width of substrate layer I, such as: it cuts into the width of 154~164mm and is rolled into neat film roll.
Step 105, PP film cladding: PP film roll is put on babe orchid overlay film surfaceoverlaid equipment, and PP back of the membrane uniformly applies PUR hot melt
Substrate surface is attached to pinch roller roll-in after glue, and the PP film use of excessive width, which is baroclined, to be taken turns roll-in and be attached to substrate side；PUR hot melt
Glue brand is bostik, glue-spread 35g/ ㎡；
Step 106, health: the plate after cladding, which is placed in constant temperature and humidity room, carries out health, and 25 DEG C of temperature, humidity 60%,
Time for 24 hours to get arrive finished product.
Step 107, product inspection: product inspection, according to " GB/T 17657-2013 wood-based plate and face artificial board are physical and chemical
Method for testing performance " it is detected, as a result such as the following table 1:
Table 1
Embodiment 2: referring to fig. 2, surface layer is the compound wooden floor of PP film comprising substrate layer I300, PP film decorative layer
400, the PP film decorative layer is coated on the top surface of the substrate layer I, and PP film decorative layer and substrate layer I pass through PUR melt viscosity
Consolidate integrator, which then forms a PUR hot melt adhesive layer 500, and PUR hot melt adhesive coating weight be 35~
60g/ ㎡, such as 50g/ ㎡.
The compound wooden floor hardness provided in the embodiment is low, comfortable foot feeling, environmental protection, burst size of methanal≤0.05mg/
m3。
It should be pointed out that substrate layer I300 is the multi-plywood prepared using Environment-friendlyadhesive adhesive or lamina product
Material, and adhesive includes but are not limited to lignin glue, rubber made from soybean cake.
In Fig. 2, PP film decorative layer 400 uses the PP film of 0.1~0.5mm, such as the PP film of 0.3mm, the setting of PP film surface
There are decorative ink and hard conating.
It is noted that referring to fig. 2, PP film decorative layer 400 has the extension for extending to the side substrate layer I
400 ', the extension is incorporated into substrate layer I by PUR hot melt adhesive, and the PP film use of excessive width, which is baroclined, takes turns roll-in attaching
In substrate side, the stability of PP film installation both can be improved, PP film also can be enhanced to the area of entire covered ground, into one
Step inhibits the evolution of associated media, this is because PP film is coated on floor surface, has outstanding closure, blocks water steaming
Gas, the function of blocking Form aldehyde release, waterproof and dampproof and feature of environmental protection excellent effect.
The surface layer mentioned in the present embodiment be the compound wooden floor of PP film preparation method can with reference implementation example 1,
This will not be repeated here.
Floor provided by the invention can be used for flooring decoration, light, comfortable foot feeling, and extremely environmental protection.It may be noted that
, national standard " Form aldehyde release is limited the quantity in GB 18580-2017 indoor decorating and refurnishing materials wood-based plate and its product " formaldehyde
Release value is 0.124mg/m3, floor burst size of methanal≤0.05mg/m provided by the invention3, it is far below requirements of the national standard.
In addition, PP film clad can floor provided by the invention is due to solid wood composite base material layer, PP film, PUR hot melt adhesive layer,
PP film is placed in the top surface of substrate layer, PP film and substrate layer materials at two layers and consolidates integrator, this class formation by PUR melt viscosity
Compared to the prior art, basic plate is more suitable for paving ground.
The above is only a preferred embodiment of the present invention, does not play the role of any restrictions to the present invention.Belonging to any
Those skilled in the art, in the range of not departing from technical solution of the present invention, to the invention discloses technical solution and
Technology contents make the variation such as any type of equivalent replacement or modification, belong to the content without departing from technical solution of the present invention, still
Within belonging to the scope of protection of the present invention.
Claims (9)
1. the preparation method that a kind of surface layer is the compound wooden floor of PP film comprising:
Step 101, the preparation of composite wood substrate layer；
Step 102, substrate layer I is formed；
It is characterized in that, further including following steps:
Step 103, the PP film with a thickness of 0.1~0.5mm is prepared, PP film surface is decorative ink layer and hard conating；
Step 104, PP film is cut according to the specification that substrate layer I is coated, is cut into rouleau, PP film width is slightly larger than substrate layer
The width of I；
Step 105, required PP film is placed on coating equipment, PP back of the membrane is pasted immediately after uniformly scratching PUR hot melt adhesive
It invests on substrate layer I and using pinch roller in surface roll-in, is combined together PP film with substrate layer I；
Step 106, the slab after cladding is subjected to health, PUR hot melt adhesive is made to react solidification sufficiently to get finished product is arrived.
2. the preparation method that a kind of surface layer according to claim 1 is the compound wooden floor of PP film, which is characterized in that step
In rapid 105, the coating weight of PUR hot melt adhesive requires 35~60g/ ㎡.
3. the preparation method that a kind of surface layer according to claim 1 is the compound wooden floor of PP film, which is characterized in that institute
It states in step 106, the temperature of health, humidity, time are as follows:
15 DEG C~35 DEG C of health temperature, health humidity 50%~80%, conditioned time >=for 24 hours.
4. the composite wood that a kind of surface layer being prepared using preparation method as described in any one of claims 1-3 is PP film
Floor, characterized in that it comprises: substrate layer I, PP film decorative layer；
The PP film decorative layer is coated on the top surface of the substrate layer I, and PP film decorative layer and substrate layer I pass through PUR hot melt adhesive
Cementation is combined into one.
5. compound wooden floor according to claim 4, which is characterized in that the substrate layer I is to utilize environment-friendly type gluing
The multi-plywood or lamina product material of agent preparation.
6. compound wooden floor according to claim 5, which is characterized in that the adhesive is lignin glue or soybean
Glue.
7. compound wooden floor according to claim 4, which is characterized in that the PP film decorative layer uses 0.1~0.5mm
PP film, the PP film surface is provided with decorative ink and hard conating.
8. compound wooden floor according to claim 4, which is characterized in that the coating weight of the PUR hot melt adhesive is 35-
60g/㎡。
9. compound wooden floor according to claim 4, which is characterized in that the PP film decorative layer, which has, extends to substrate
The extension of the side layer I, the extension is incorporated into substrate layer I by PUR hot melt adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910330440.6A CN110206262A (en) | 2019-04-23 | 2019-04-23 | A kind of surface layer is the compound wooden floor and preparation method of PP film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910330440.6A CN110206262A (en) | 2019-04-23 | 2019-04-23 | A kind of surface layer is the compound wooden floor and preparation method of PP film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110206262A true CN110206262A (en) | 2019-09-06 |
Family
ID=67786303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910330440.6A Pending CN110206262A (en) | 2019-04-23 | 2019-04-23 | A kind of surface layer is the compound wooden floor and preparation method of PP film |
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| Country | Link |
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| CN (1) | CN110206262A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111300958A (en) * | 2020-02-28 | 2020-06-19 | 北新集团建材股份有限公司 | Production process of composite board |
-
2019
- 2019-04-23 CN CN201910330440.6A patent/CN110206262A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111300958A (en) * | 2020-02-28 | 2020-06-19 | 北新集团建材股份有限公司 | Production process of composite board |
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