CN109181165A - Inexpensive polyvinyl chloride soundproof plate - Google Patents
Inexpensive polyvinyl chloride soundproof plate Download PDFInfo
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- CN109181165A CN109181165A CN201811091496.2A CN201811091496A CN109181165A CN 109181165 A CN109181165 A CN 109181165A CN 201811091496 A CN201811091496 A CN 201811091496A CN 109181165 A CN109181165 A CN 109181165A
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- polyvinyl
- chloride
- foaming
- soundproof plate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
- C08J9/102—Azo-compounds
- C08J9/103—Azodicarbonamide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/04—N2 releasing, ex azodicarbonamide or nitroso compound
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/18—Binary blends of expanding agents
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2327/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
- C08J2327/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
- C08J2327/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08J2327/06—Homopolymers or copolymers of vinyl chloride
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/06—Polyethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
Abstract
The invention discloses a kind of inexpensive polyvinyl chloride soundproof plates, belong to polyvinyl-chloride plate material technical field.It is poor to solve existing soundproof plate soundproof effect, it is at high cost, produce the problems such as unstable.The inexpensive polyvinyl chloride soundproof plate, it is made of the raw material of following parts by weight: 140-160 parts of polyvinyl-chloride plate material reclaimed materials, 40-60 parts of coarse whiting, 530 3-4 parts of foaming control agent, 90 2-3 parts of foaming control agent, 2.0-2.4 parts of lead salt compound stabilizer, 0.3-0.4 parts of in-lubricant ZB-60,0.35-0.4 parts of polyethylene wax, 0.55-0.6 parts of plasticiser OA3,0.4-0.5 parts of AC foaming agent of heat release type, 1.5-1.6 parts, 0.3-0.6 parts of carbon black of 603 foaming agent of heat absorbing type.The present invention can be used as soundproof plate.
Description
Technical field
The present invention relates to a kind of inexpensive polyvinyl chloride soundproof plates, belong to polyvinyl-chloride plate material technical field.
Background technique
Acoustic material becomes a kind of indispensable material of building trade, and therefore, promoting and applying PVC acoustic material is to save
Resource, energy saving, " mould Dai Mu ", " mould Dai Gang " important measures.
Polyvinyl chloride sound insulating sheet material has identical with wooden boards using function, can order, can dig, can be processed, and skinning
Layer hardness compare better effect with wooden boards, compared to wooden boards its with better waterproof, moisture-proof, vermins-proof effect.
The size of density has direct relation for the hardness of plate, and foam plate is more demanding for plate brightness, the prior art
The polyvinyl chloride Furniture panel of production is not only at high cost, low yield, of poor quality, and there are density to be difficult to control, core has bubble
The bad problems such as hole, the poor, poor flatness of surface hardness.
Summary of the invention
The purpose of the present invention is to provide a kind of inexpensive polyvinyl chloride soundproof plates, at low cost, yield is high, high-quality
The advantages of.
The inexpensive polyvinyl chloride soundproof plate, is made of: polyvinyl-chloride plate material reclaimed materials the raw material of following parts by weight
140-160 parts, 40-60 parts of coarse whiting, 530 3-4 parts of foaming control agent, 90 2-3 parts of foaming control agent, lead salt compound stabilizer
It 2.0-2.4 parts, 0.3-0.4 parts of in-lubricant ZB-60,0.35-0.4 parts of polyethylene wax, 0.55-0.6 parts of plasticiser OA3, puts
0.4-0.5 parts of heat type AC foaming agent, 1.5-1.6 parts, 0.3-0.6 parts of carbon black of 603 foaming agent of heat absorbing type.
The inexpensive polyvinyl chloride soundproof plate, is made of: polyvinyl-chloride plate material reclaimed materials the raw material of following parts by weight
It is 150 parts, 50 parts of coarse whiting, 530 3.5 parts of foaming control agent, 90 2.5 parts of foaming control agent, 2.2 parts of lead salt compound stabilizer, interior
0.35 part of lubricant ZB-60,0.38 part of polyethylene wax, 0.57 part of plasticiser OA3,0.45 part of foaming agent of heat release type AC, heat absorption
1.55 parts, 0.5 part of carbon black of 603 foaming agent of type.
The soundproof plate density is 0.45-0.5g/cm3。
The preparation method of the inexpensive polyvinyl chloride soundproof plate, comprising the following steps:
The mixed pot stirring of heat is added with coarse whiting by 2/3rds of polyvinyl-chloride plate material reclaimed materials total amount and is warming up to 80 DEG C or more,
Then it sequentially adds small powder and regulator continues stirring and is warming up to 100-110 DEG C, finally recycle remaining polyvinyl-chloride plate material
The mixed pot of material investment heat is simultaneously heated to 110-120 DEG C, and mixture is put into stirring in cold mixing pot rapidly and is cooled to 40-60 DEG C, will be cold
But material is delivered to extruder, so that it is plasticized good transportation to mold through six sections of twin-screw heating of barrel, controls temperature in mold
Pressure squeezes out die lip, qualitative via the cooling pressing of shaping platform, and dragger excision forming of moving out obtains finished product；
Wherein extruder temperature is set as 150-165 DEG C, and mold temperature is located at 155-158 DEG C, and mold oil temperature machine is set in
150-155 DEG C, water temperature machine is set in 15-20 DEG C at die lip, and shaping platform cooling water is located at 15-18 DEG C.
Compared with prior art the beneficial effects of the present invention are:
The present invention cooperates foaming agent and regulator to use, substantially increases hair using polyvinyl-chloride plate material reclaimed materials as raw material
Bubble rate, plate sandwich layer is honeycomb structure, therefore has good soundproof effect, while substantially reduce production cost.
Soundproof plate density produced by the invention is in 0.45-0.5g/cm3Between, density is controllable, and production is stablized, although foaming
It is relatively large in diameter, in 0.5mm or so, but uniform in foaming, sandwich layer become larger without bad phenomenons, bubble-hole thickness such as abscess gas strings, and
The plate surface hardness of production is big, soundproof effect is good, and nail-holding ability is high.
Foaming control agent 530 is plasticized fastly, good toughness and surface hardness height, at low cost, and foaming control agent 90 is plasticized slowly, is turned round
Square is high, and viscosity is big；It is used cooperatively, is played while cost is reduced very using foaming control agent 90 and foaming control agent 530
Good foaming regulating effect, while ensure that good melt strength.
The present invention is using 6 sections of screw rods and entire processing technology uses lower processing temperature, replaces work with plasticiser
The plasticizing of skill, because polyvinyl-chloride plate material reclaimed materials is secondary operation, and dosage is more, and it is unstable that temperature height will lead to production
It is fixed, influence the period that is switched on.For the present invention by adjusting processing temperature, stabilizer and plasticiser dosage, guarantee plate hardness is larger,
Production is stablized, and extends the available machine time to 30 days or so.
Polyvinyl chloride sound insulation plate surface produced by the invention is more smooth compared with wooden boards, directly uses or process modification
All can, also there are the characteristics such as fire prevention, waterproof, moisture-proof, anti-corrosion while meeting user's basic need.
Specific embodiment
The present invention will be further described combined with specific embodiments below.
Embodiment 1
The inexpensive polyvinyl chloride soundproof plate, is made of: polyvinyl-chloride plate material reclaimed materials the raw material of following parts by weight
140 parts, 40 parts of coarse whiting, 530 3 parts of foaming control agent, 90 2 parts of foaming control agent, 2.0 parts of lead salt compound stabilizer, interior lubrication
0.3 part of agent ZB-60,0.35 part of polyethylene wax, 0.55 part of plasticiser OA3,0.4 part of foaming agent of heat release type AC, heat absorbing type 603 is sent out
1.5 parts of infusion, 0.3 part of carbon black.The soundproof plate density is 0.45g/cm3。
The preparation method of the inexpensive polyvinyl chloride soundproof plate, it is characterised in that the following steps are included:
The mixed pot stirring of heat is added with coarse whiting by 2/3rds of polyvinyl-chloride plate material reclaimed materials total amount and is warming up to 80 DEG C or more,
Then it sequentially adds small powder and regulator continues stirring and is warming up to 100 DEG C, finally throw remaining polyvinyl-chloride plate material reclaimed materials
Enter the mixed pot of heat and be heated to 110 DEG C, mixture is put into stirring in cold mixing pot rapidly and is cooled to 40 DEG C, cooling material is delivered to
Extruder makes it be plasticized good transportation to mold, controls temperature, pressure in mold and squeeze out die lip through barrel six sections of twin-screws heating,
Qualitative via the cooling pressing of shaping platform, dragger excision forming of moving out obtains finished product；
Wherein extruder temperature is set as 150 DEG C, and mold temperature is located at 155 DEG C, and mold oil temperature machine is set in 150 DEG C, mould
Water temperature machine is set in 15 DEG C at lip, and shaping platform cooling water is located at 15 DEG C.
Embodiment 2
The inexpensive polyvinyl chloride soundproof plate, is made of: polyvinyl-chloride plate material reclaimed materials the raw material of following parts by weight
It is 150 parts, 50 parts of coarse whiting, 530 3.5 parts of foaming control agent, 90 2.5 parts of foaming control agent, 2.2 parts of lead salt compound stabilizer, interior
0.35 part of lubricant ZB-60,0.38 part of polyethylene wax, 0.57 part of plasticiser OA3,0.45 part of foaming agent of heat release type AC, heat absorption
1.55 parts, 0.5 part of carbon black of 603 foaming agent of type.The soundproof plate density is 0.5g/cm3。
The preparation method of the inexpensive polyvinyl chloride soundproof plate, it is characterised in that the following steps are included:
The mixed pot stirring of heat is added with coarse whiting by 2/3rds of polyvinyl-chloride plate material reclaimed materials total amount and is warming up to 80 DEG C or more,
Then it sequentially adds small powder and regulator continues stirring and is warming up to 105 DEG C, finally throw remaining polyvinyl-chloride plate material reclaimed materials
Enter the mixed pot of heat and be heated to 115 DEG C, mixture is put into stirring in cold mixing pot rapidly and is cooled to 50 DEG C, cooling material is delivered to
Extruder makes it be plasticized good transportation to mold, controls temperature, pressure in mold and squeeze out die lip through barrel six sections of twin-screws heating,
Qualitative via the cooling pressing of shaping platform, dragger excision forming of moving out obtains finished product；
Wherein extruder temperature is set as 160 DEG C, and mold temperature is located at 156 DEG C, and mold oil temperature machine is set in 153 DEG C, mould
Water temperature machine is set in 18 DEG C at lip, and shaping platform cooling water is located at 17 DEG C.
Embodiment 3
The inexpensive polyvinyl chloride soundproof plate, is made of: polyvinyl-chloride plate material reclaimed materials the raw material of following parts by weight
160 parts, 60 parts of coarse whiting, 530 4 parts of foaming control agent, 90 3 parts of foaming control agent, 2.4 parts of lead salt compound stabilizer, interior lubrication
0.4 part of agent ZB-60,0.4 part of polyethylene wax, 0.6 part of plasticiser OA3,0.5 part of foaming agent of heat release type AC, heat absorbing type 603 foams
1.6 parts of agent, 0.6 part of carbon black.The soundproof plate density is 0.45-0.5g/cm3.The soundproof plate density is 0.47g/cm3。
The preparation method of the inexpensive polyvinyl chloride soundproof plate, it is characterised in that the following steps are included:
The mixed pot stirring of heat is added with coarse whiting by 2/3rds of polyvinyl-chloride plate material reclaimed materials total amount and is warming up to 80 DEG C or more,
Then it sequentially adds small powder and regulator continues stirring and is warming up to 110 DEG C, finally throw remaining polyvinyl-chloride plate material reclaimed materials
Enter the mixed pot of heat and be heated to 120 DEG C, mixture is put into stirring in cold mixing pot rapidly and is cooled to 60 DEG C, cooling material is delivered to
Extruder makes it be plasticized good transportation to mold, controls temperature, pressure in mold and squeeze out die lip through barrel six sections of twin-screws heating,
Qualitative via the cooling pressing of shaping platform, dragger excision forming of moving out obtains finished product；
Wherein extruder temperature is set as 165 DEG C, and mold temperature is located at 158 DEG C, and mold oil temperature machine is set in 155 DEG C, mould
Water temperature machine is set in 20 DEG C at lip, and shaping platform cooling water is located at 18 DEG C.
The polyvinyl chloride sound insulation of the polyvinyl chloride soundproof plate described in 1-3 of the embodiment of the present invention and prior art production respectively
The performance of plate is tested, and concrete outcome is as follows:
| Acoustical ratings | Per ton cost | Bending strength | Nail-holding ability | |
| Existing soundproof plate | 3 | 5500 or so | 15mpa or so | 800N |
| Embodiment 1 | 5 | 4000 or so | 22mpa | 1252N |
| Embodiment 2 | 5 | 4000 or so | 22.2mpa | 1203N |
| Embodiment 3 | 5 | 4000 or so | 21.6mpa | 1312N |
As can be seen from the above table, polyvinyl chloride soundproof plate soundproof effect produced by the invention is better than existing soundproof plate, and at
This is low, bending strength is high, nail-holding ability is high.
Claims (4)
1. a kind of low cost polyvinyl chloride soundproof plate, it is characterised in that be made of the raw material of following parts by weight: polyvinyl-chloride plate material
140-160 parts of reclaimed materials, 40-60 parts of coarse whiting, 530 3-4 parts of foaming control agent, 90 2-3 parts of foaming control agent, lead salt is compound steady
Determine 2.0-2.4 parts of agent, 0.3-0.4 parts of in-lubricant ZB-60,0.35-0.4 parts of polyethylene wax, plasticiser OA3 0.55-0.6
Part, 0.4-0.5 parts of AC foaming agent of heat release type, 1.5-1.6 parts, 0.3-0.6 parts of carbon black of 603 foaming agent of heat absorbing type.
2. low cost polyvinyl chloride soundproof plate according to claim 1, it is characterised in that by the raw material group of following parts by weight
At: 150 parts of polyvinyl-chloride plate material reclaimed materials, 50 parts of coarse whiting, 530 3.5 parts of foaming control agent, 90 2.5 parts of foaming control agent, lead
2.2 parts of salt compound stabilizer, 0.35 part of in-lubricant ZB-60,0.38 part of polyethylene wax, 0.57 part of plasticiser OA3, heat release type
0.45 part of AC foaming agent, 1.55 parts, 0.5 part of carbon black of 603 foaming agent of heat absorbing type.
3. low cost polyvinyl chloride soundproof plate according to claim 1 or 2, it is characterised in that: the soundproof plate density is
0.45-0.5g/cm3。
4. a kind of preparation method of inexpensive polyvinyl chloride soundproof plate described in claim 1, it is characterised in that including following step
It is rapid:
The mixed pot stirring of heat is added with coarse whiting by 2/3rds of polyvinyl-chloride plate material reclaimed materials total amount and is warming up to 80 DEG C or more, then
It sequentially adds small powder and regulator continues stirring and is warming up to 100-110 DEG C, finally throw remaining polyvinyl-chloride plate material reclaimed materials
Enter the mixed pot of heat and be heated to 110-120 DEG C, mixture is put into stirring in cold mixing pot rapidly and is cooled to 40-60 DEG C, by cooled material
Material is delivered to extruder, so that it is plasticized good transportation to mold through six sections of twin-screw heating of barrel, controls temperature, pressure in mold
Die lip is squeezed out, qualitative via the cooling pressing of shaping platform, dragger excision forming of moving out obtains finished product；
Wherein extruder temperature is set as 150-165 DEG C, and mold temperature is located at 155-158 DEG C, and mold oil temperature machine is set in 150-
155 DEG C, water temperature machine is set in 15-20 DEG C at die lip, and shaping platform cooling water is located at 15-18 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811091496.2A CN109181165A (en) | 2018-09-19 | 2018-09-19 | Inexpensive polyvinyl chloride soundproof plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811091496.2A CN109181165A (en) | 2018-09-19 | 2018-09-19 | Inexpensive polyvinyl chloride soundproof plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109181165A true CN109181165A (en) | 2019-01-11 |
Family
ID=64908158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811091496.2A Pending CN109181165A (en) | 2018-09-19 | 2018-09-19 | Inexpensive polyvinyl chloride soundproof plate |
Country Status (1)
| Country | Link |
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| CN (1) | CN109181165A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113831665A (en) * | 2021-10-14 | 2021-12-24 | 安徽炭元高新科技集团有限公司 | Multifunctional negative ion carbon composite board and manufacturing process thereof |
| CN114479312A (en) * | 2022-01-24 | 2022-05-13 | 安徽中益新材料科技股份有限公司 | Light self-cleaning sound barrier board and preparation method thereof |
| CN115873295A (en) * | 2022-12-13 | 2023-03-31 | 上海英科实业有限公司 | Recycled polystyrene foam section with high nail-holding power and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104017309A (en) * | 2014-06-20 | 2014-09-03 | 无锡市宏宇汽车配件制造有限公司 | Polyvinyl chloride low-foaming car plate and preparation method thereof |
-
2018
- 2018-09-19 CN CN201811091496.2A patent/CN109181165A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104017309A (en) * | 2014-06-20 | 2014-09-03 | 无锡市宏宇汽车配件制造有限公司 | Polyvinyl chloride low-foaming car plate and preparation method thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113831665A (en) * | 2021-10-14 | 2021-12-24 | 安徽炭元高新科技集团有限公司 | Multifunctional negative ion carbon composite board and manufacturing process thereof |
| CN114479312A (en) * | 2022-01-24 | 2022-05-13 | 安徽中益新材料科技股份有限公司 | Light self-cleaning sound barrier board and preparation method thereof |
| CN114479312B (en) * | 2022-01-24 | 2023-10-03 | 安徽中益新材料科技股份有限公司 | Light self-cleaning sound barrier plate and preparation method thereof |
| CN115873295A (en) * | 2022-12-13 | 2023-03-31 | 上海英科实业有限公司 | Recycled polystyrene foam section with high nail-holding power and preparation method thereof |
| CN115873295B (en) * | 2022-12-13 | 2023-11-10 | 上海英科实业有限公司 | Recycled polystyrene foam profile with high nail holding power and preparation method thereof |
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| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 273300 Wenshui Park, Pingyi County Economic Development Zone, Linyi City, Shandong Province, to the north of National Highway 327, west of Fengshan Road Applicant after: Shandong Huifeng New Material Science and Technology Co., Ltd. Address before: 273300 Wenshui Park, Pingyi County Economic Development Zone, Linyi City, Shandong Province, north of 327 National Road and west of Fengshan Road Applicant before: SHANDONG HUIFENG WOOD PLASTIC PROFILE CO., LTD. |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190111 |
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| RJ01 | Rejection of invention patent application after publication |