CN105754215A - Manufacturing method of PP (polypropylene) double-wall corrugated pipe - Google Patents
Manufacturing method of PP (polypropylene) double-wall corrugated pipe Download PDFInfo
- Publication number
- CN105754215A CN105754215A CN201610145735.2A CN201610145735A CN105754215A CN 105754215 A CN105754215 A CN 105754215A CN 201610145735 A CN201610145735 A CN 201610145735A CN 105754215 A CN105754215 A CN 105754215A
- Authority
- CN
- China
- Prior art keywords
- parts
- double
- wall
- pipe
- corrugated pipe
- Prior art date
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0022—Combinations of extrusion moulding with other shaping operations combined with cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
-
- 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
- C08K3/34—Silicon-containing compounds
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L101/00—Compositions of unspecified macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/18—Applications used for pipes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/20—Recycled plastic
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The invention relates to a manufacturing method of a PP (polypropylene) double-wall corrugated pipe.An outer wall pipe body of the PP double-wall corrugated pipe comprises, by weight, 50-60 parts of polypropylene resin, 4-7 parts of reclaimed materials, 20-40 parts of immobilized filling materials, 4-5 parts of stearic acid, 3-5 parts of desiccants, 2-5 parts of black masterbatch and 5-10 parts of talcum powder, and an inner wall pipe body of the PP double-wall corrugated pipe comprises, by weight, 45-65 parts of polypropylene resin, 4-7 parts of reclaimed materials, 20-40 parts of immobilized filling materials, 4-5 parts of stearic acid, 3-5 parts of desiccants, 2-5 parts of blue masterbatch and 5-10 parts of talcum powder.The manufacturing method includes mixing the raw materials doubly, feeding in a vacuum manner, forcibly feeding regularly and quantitatively, extruding the mixed raw materials in a twin-cone twin-screw extruder, subjecting extruded pipe blanks to shaped drawing on a molding machine by segmented control while a flaring forming process is conducted, and cutting.The manufacturing method of the PP double-wall corrugated pipe has the advantages that production can be conducted continuously, a good plasticizing effect is achieved to enable the manufactured double-wall corrugated pipe to be uniform, yield is stable and quality of the finished pipe can be improved.
Description
Technical field
The present invention relates to engineering plastics processing and manufacturing field, particularly to the manufacture method of a kind of high density poly propylene double-wall corrugated pipe.
Background technology
A kind of novel light tubing that double-wall corrugated pipe is is raw material with high density polyethylene (HDPE), has the features such as lightweight, high pressure resistant, good toughness, fast, the life-span length of construction, and the structural pipe wall design of its excellence, compared with the tubing of other structures, cost is substantially reduced.And due to easy to connect, reliable, at home and abroad it is used widely.A large amount of replacement pipe of concretes and cast iron pipe, but the production technology with regard to existing double-wall corrugated pipe, also can not produce bigbore double-wall corrugated pipe, especially can not produce external diameter and reach the double-wall corrugated pipe of 600mm, the problem that its reason has technique and former, when producing bigbore double-wall corrugated pipe, mostly adopt polyethylene raw material mixing at present, its ring rigidity, ring flexibility are poor, prior art adopts single screw extrusion machine extruding pipe material, it easily refluxes, and yield is unstable, produces double-wall corrugated pipe of low quality.
Summary of the invention
The technical problem to be solved in the present invention is to provide the manufacture method of the PP double-wall corrugated pipe that a kind of ring stiffness is higher, crushing resistance better, tubing weight is lighter.
In order to solve above-mentioned technical problem, the invention provides the manufacture method of a kind of PP double-wall corrugated pipe, contain below step successively:
Step one: get the raw materials ready in units of weight portion,
Being made up of the raw material of following weight parts of described outer wall pipe:
Acrylic resin: 50～60 parts, reworked material: 4～7, fixing inserts: 20～40 parts, stearic acid: 4～5 parts, desiccant: 3～5 parts, black masterbatch: 2～5 parts, Pulvis Talci: 5～10 parts；
Being made up of the raw material of following weight parts of described inner wall tube:
Acrylic resin: 45～65 parts, reworked material: 4～7, fixing inserts: 20～40 parts, stearic acid: 4～5 parts, desiccant: 3～5 parts, blue masterbatch: 2～5 parts, Pulvis Talci: 5～10 parts.
Step 2: double; two batch mixings, getting the raw materials ready above-mentioned outer wall pipe and inner wall tube to put in double; two batch mixer mixes, inside and outside its point two kinds；
Step 3: vacuum feeding, at regular time and quantity forced feed, feeding machine rotating speed is that 20-29 turns/min, and two feeding machines are continuous flow rate, its setting weight 200～300kg/h；
Step 4: extrusion; material after mixing is put in bipyramid double screw extruder; its range of speeds controls: outer wall pipe 25-34 turns/min; inner wall tube 15-22 turns/min; and 190～230 DEG C temperature, melted batch mixing is extruded by extrusion die under 17-20MPa melt pressure, its extrusion die is divided into inside and outside mouth die, and inside and outside described, casement is provided with set screw; its wall thickness thickness size is adjustable online, it is not necessary to shut down form removal adjustment；
Step 5: molding, by the Discrete control sizing traction on forming machine of pipe after extrusion molding, carry out flare formation operation simultaneously, enlarging initial length is 80-130mm, it is 340-380mm that enlarging terminates length, and forming machine is provided with at least eight sections of moulding processs, and shaping speed set point is 380-6400mm, velocity interval 85-110M/s, described forming machine periphery is provided with cooling blower.
Step 6: cutting, the cleaved machine cutting of double-wall corrugated pipe, go-cart packaging after rollover stand upset.
The melt index MFR at the temperature of 0～230 DEG C of the acrylic resin of described outer wall pipe is: 0.3-0.4g/10min；The acrylic resin of described inner wall tube melt index at the temperature of 0～230 DEG C is: 0.8-1.0g/10min.
Compared with prior art, the present invention has the advantage that
PP double-wall corrugated pipe provided by the invention, by reasonably selecting materials and proportioning, adopt double-wall corrugated pipe that this dispensing makes inside and outside it tubing there is higher melt strength and rigidity, have both good shock resistance simultaneously, make that double-wall corrugated pipe ring stiffness is higher, crushing resistance better, tubing weight is lighter, and the composition material of outer tube adopts acrylic resin raw material so that the ring flexibility of outer tube increases, toughness is better, can be widely used for without the buried draining of compression molding material, blow-off line.
Making programme of the present invention is adopted to be able to ensure that production can continuously perform, improve production efficiency；Described corrugated tube is one-body molded by bipyramid double screw extruder, and it is energy-conservation, and plasticizing effect is good so that produce double-wall pipe tubing uniform, and stable yield can improve pipe finished quality, and yield rate is high, tubing intensity enhancing, and production efficiency is high.Being provided with extrusion die on existing forming machine, in this extrusion die, the big I of the thick degree of outer mold walls is controlled online, it is not necessary to shuts down form removal adjustment, and is provided with special set screw, it is ensured that product up-to-standard.
Detailed description of the invention
Embodiment one: the manufacture method of a kind of PP double-wall corrugated pipe, contains below step successively:
Step one: get the raw materials ready in units of weight portion,
Being made up of the raw material of following weight parts of described outer wall pipe:
Acrylic resin: 50～60 parts, reworked material: 4～7, fixing inserts: 20～40 parts, stearic acid: 4～5 parts, desiccant: 3～5 parts, black masterbatch: 2～5 parts, Pulvis Talci: 5～10 parts；
Being made up of the raw material of following weight parts of described inner wall tube:
Acrylic resin: 45～65 parts, reworked material: 4～7, fixing inserts: 20～40 parts, stearic acid: 4～5 parts, desiccant: 3～5 parts, blue masterbatch: 2～5 parts, Pulvis Talci: 5～10 parts.
Step 2: double; two batch mixings, getting the raw materials ready above-mentioned outer wall pipe and inner wall tube to put in double; two batch mixer mixes, inside and outside its point two kinds；
Vacuum feeding, at regular time and quantity forced feed, feeding machine rotating speed is that 20-29 turns/min, and two feeding machines are continuous flow rate, its setting weight 200～300kg/h；
Step 4: extrusion; material after mixing is put in bipyramid double screw extruder; its range of speeds controls: outer wall pipe 25-34 turns/min; inner wall tube 15-22 turns/min; and 190～230 DEG C temperature, melted batch mixing is extruded by extrusion die under 17-20MPa melt pressure, its extrusion die is divided into inside and outside casement, and inside and outside described, casement is provided with set screw; its wall thickness thickness size is adjustable online, it is not necessary to shut down form removal adjustment；
Step 5: molding, by the Discrete control sizing traction on forming machine of pipe after extrusion molding, carry out flare formation operation simultaneously, enlarging initial length is 80-130mm, it is 340-380mm that enlarging terminates length, and forming machine is provided with at least eight sections of moulding processs, and shaping speed set point is 380-6400mm, velocity interval 85-110M/s, described forming machine periphery is provided with cooling blower.
Step 6: cutting, the cleaved machine cutting of double-wall corrugated pipe, go-cart packaging after rollover stand upset.
The melt index MFR at the temperature of 0～230 DEG C of the acrylic resin of described outer wall pipe is: 0.3-0.4g/10min；The acrylic resin of described inner wall tube melt index at the temperature of 0～230 DEG C is: 0.8-1.0g/10min.
Double screw extruder in the present embodiment is to adopt conical double screw extruder, and its extrusion capacity hourly, up to 1500kg, can ensure fully plasticizing and the continuously shaped required material supply of heavy caliber corrugated tube of material effectively.
Claims (2)
1. the manufacture method of a PP double-wall corrugated pipe, it is characterised in that: contain below step successively:
Step one: get the raw materials ready in units of weight portion,
Being made up of the raw material of following weight parts of described outer wall pipe:
Acrylic resin: 50～60 parts, reworked material: 4～7, fixing inserts: 20～40 parts, stearic acid: 4～5 parts, desiccant: 3～5 parts, black masterbatch: 2～5 parts, Pulvis Talci: 5～10 parts；
Being made up of the raw material of following weight parts of described inner wall tube:
Acrylic resin: 45～65 parts, reworked material: 4～7, fixing inserts: 20～40 parts, stearic acid: 4～5 parts, desiccant: 3～5 parts, blue masterbatch: 2～5 parts, Pulvis Talci: 5～10 parts；
Step 2: double; two batch mixings, getting the raw materials ready above-mentioned outer wall pipe and inner wall tube to put in double; two batch mixer mixes, inside and outside its point two kinds；
Step 3: vacuum feeding, at regular time and quantity forced feed, feeding machine rotating speed is that 20-29 turns/min, and two feeding machines are continuous flow rate, its setting weight 200～300kg/h；
Step 4: extrusion; material after mixing is put in bipyramid double screw extruder; its range of speeds controls: outer wall pipe 25-34 turns/min; inner wall tube 15-22 turns/min; and 190～230 DEG C temperature, melted batch mixing is extruded by extrusion die under 17-20MPa melt pressure, its extrusion die is divided into inside and outside mouth die, and inside and outside described, mouth die is provided with set screw; its wall thickness thickness size is adjustable online, it is not necessary to shut down form removal adjustment；
Step 5: molding, by the Discrete control sizing traction on forming machine of pipe after extrusion molding, carry out flare formation operation simultaneously, enlarging initial length is 80-130mm, it is 340-380mm that enlarging terminates length, and forming machine is provided with at least eight sections of moulding processs, and shaping speed set point is 380-6400mm, velocity interval 85-110M/s, described forming machine periphery is provided with cooling blower；
Step 6: cutting, the cleaved machine cutting of double-wall corrugated pipe, go-cart packaging after rollover stand upset.
2. the manufacture method of PP double-wall corrugated pipe according to claim 1, it is characterised in that: the melt index MFR at the temperature of 0～230 DEG C of the acrylic resin of described outer wall pipe is: 0.3-0.4g/10min；The acrylic resin of described inner wall tube melt index at the temperature of 0～230 DEG C is: 0.8-1.0g/10min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610145735.2A CN105754215A (en) | 2016-03-15 | 2016-03-15 | Manufacturing method of PP (polypropylene) double-wall corrugated pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610145735.2A CN105754215A (en) | 2016-03-15 | 2016-03-15 | Manufacturing method of PP (polypropylene) double-wall corrugated pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105754215A true CN105754215A (en) | 2016-07-13 |
Family
ID=56333151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610145735.2A Pending CN105754215A (en) | 2016-03-15 | 2016-03-15 | Manufacturing method of PP (polypropylene) double-wall corrugated pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105754215A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106426994A (en) * | 2016-08-25 | 2017-02-22 | 江苏飞天管道设备有限公司 | Polypropylene-rubber composite corrugated pipe |
| CN107189231A (en) * | 2017-07-03 | 2017-09-22 | 重庆川环科技有限公司 | Polypropylene reinforced double-wall corrugated pipe |
| CN108638469A (en) * | 2018-04-19 | 2018-10-12 | 广东永高塑业发展有限公司 | A kind of manufacturing method dilating stretching Reinforced PVC-M double-wall corrugated pipes |
| CN109373065A (en) * | 2018-11-20 | 2019-02-22 | 福建晟达通节能科技有限公司 | A kind of high bending elastic modulus continuous production PP double-wall corrugated pipe and its production method |
| CN110818980A (en) * | 2019-10-08 | 2020-02-21 | 江西省得一康管业有限公司 | Preparation method and detection equipment of MPVE double-wall corrugated pipe with high rolling resistance |
| CN110815764A (en) * | 2019-10-08 | 2020-02-21 | 江西省得一康管业有限公司 | Preparation method and detection equipment of MPVE double-wall corrugated pipe with high bending strength resistance |
| CN112344109A (en) * | 2020-11-06 | 2021-02-09 | 贵州黔峰实业有限公司 | Preparation and production process of modified polypropylene flat-wall reinforced corrugated pipe |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1630577A (en) * | 2002-02-14 | 2005-06-22 | 电气化学工业株式会社 | Method for manufacturing double- wall corrugated tube |
| CN101463162A (en) * | 2008-12-04 | 2009-06-24 | 粟阳 | Copolymer for producing polypropylene double-walled reinforcement bellows and preparation thereof |
| CN101761710A (en) * | 2009-12-29 | 2010-06-30 | 山东华信塑胶股份有限公司 | Compound double-wall corrugated pipe and preparation process thereof |
| CN101983982A (en) * | 2010-11-19 | 2011-03-09 | 大连海事大学 | Raw material composition for preparing heavy caliber polypropylene double-wall corrugated pipe |
| CN102719011A (en) * | 2012-06-26 | 2012-10-10 | 福建晟扬管道科技有限公司 | Novel polypropylene double-wall corrugated pipe and preparation method thereof |
| CN202629370U (en) * | 2012-07-09 | 2012-12-26 | 福建亚通新材料科技股份有限公司 | Novel polypropylene double-wall corrugated pipe |
| CN103059342A (en) * | 2013-01-28 | 2013-04-24 | 天津市宝力圣尼塑管制造有限公司 | Modified polyethylene double-wall l corrugated pipe drying agent and preparation method thereof |
| CN103554668A (en) * | 2013-10-31 | 2014-02-05 | 安徽国通高新管业股份有限公司 | Novel polypropylene double-wall corrugated pipe |
| CN103982713A (en) * | 2014-05-09 | 2014-08-13 | 南安市华益塑胶制造有限公司 | Double-wall corrugated pipe modified by waste HDPE (high-density polyethylene) and manufacturing process of double-wall corrugated pipe |
| CN104369343A (en) * | 2014-11-17 | 2015-02-25 | 刘超 | Pipe blank forming mold structure of single-wall corrugated pipe |
| CN104910483A (en) * | 2015-05-26 | 2015-09-16 | 浙江中财管道科技股份有限公司 | High-density polyethylene double-wall corrugated pipe |
| CN105086068A (en) * | 2015-08-20 | 2015-11-25 | 福建博大塑业新材料有限公司 | Water-absorbing granule for HDPE (high-density polyethylene) tubes, and preparation method and application thereof |
-
2016
- 2016-03-15 CN CN201610145735.2A patent/CN105754215A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1630577A (en) * | 2002-02-14 | 2005-06-22 | 电气化学工业株式会社 | Method for manufacturing double- wall corrugated tube |
| CN101463162A (en) * | 2008-12-04 | 2009-06-24 | 粟阳 | Copolymer for producing polypropylene double-walled reinforcement bellows and preparation thereof |
| CN101761710A (en) * | 2009-12-29 | 2010-06-30 | 山东华信塑胶股份有限公司 | Compound double-wall corrugated pipe and preparation process thereof |
| CN101983982A (en) * | 2010-11-19 | 2011-03-09 | 大连海事大学 | Raw material composition for preparing heavy caliber polypropylene double-wall corrugated pipe |
| CN102719011A (en) * | 2012-06-26 | 2012-10-10 | 福建晟扬管道科技有限公司 | Novel polypropylene double-wall corrugated pipe and preparation method thereof |
| CN202629370U (en) * | 2012-07-09 | 2012-12-26 | 福建亚通新材料科技股份有限公司 | Novel polypropylene double-wall corrugated pipe |
| CN103059342A (en) * | 2013-01-28 | 2013-04-24 | 天津市宝力圣尼塑管制造有限公司 | Modified polyethylene double-wall l corrugated pipe drying agent and preparation method thereof |
| CN103554668A (en) * | 2013-10-31 | 2014-02-05 | 安徽国通高新管业股份有限公司 | Novel polypropylene double-wall corrugated pipe |
| CN103982713A (en) * | 2014-05-09 | 2014-08-13 | 南安市华益塑胶制造有限公司 | Double-wall corrugated pipe modified by waste HDPE (high-density polyethylene) and manufacturing process of double-wall corrugated pipe |
| CN104369343A (en) * | 2014-11-17 | 2015-02-25 | 刘超 | Pipe blank forming mold structure of single-wall corrugated pipe |
| CN104910483A (en) * | 2015-05-26 | 2015-09-16 | 浙江中财管道科技股份有限公司 | High-density polyethylene double-wall corrugated pipe |
| CN105086068A (en) * | 2015-08-20 | 2015-11-25 | 福建博大塑业新材料有限公司 | Water-absorbing granule for HDPE (high-density polyethylene) tubes, and preparation method and application thereof |
Non-Patent Citations (1)
| Title |
|---|
| 吴清鹤: "《塑料挤出成型》", 31 October 2004, 化学工业出版社 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106426994A (en) * | 2016-08-25 | 2017-02-22 | 江苏飞天管道设备有限公司 | Polypropylene-rubber composite corrugated pipe |
| CN107189231A (en) * | 2017-07-03 | 2017-09-22 | 重庆川环科技有限公司 | Polypropylene reinforced double-wall corrugated pipe |
| CN108638469A (en) * | 2018-04-19 | 2018-10-12 | 广东永高塑业发展有限公司 | A kind of manufacturing method dilating stretching Reinforced PVC-M double-wall corrugated pipes |
| CN109373065A (en) * | 2018-11-20 | 2019-02-22 | 福建晟达通节能科技有限公司 | A kind of high bending elastic modulus continuous production PP double-wall corrugated pipe and its production method |
| CN109373065B (en) * | 2018-11-20 | 2024-04-02 | 福建晟达通节能科技有限公司 | PP double-wall corrugated pipe with high bending elastic modulus and production method thereof |
| CN110818980A (en) * | 2019-10-08 | 2020-02-21 | 江西省得一康管业有限公司 | Preparation method and detection equipment of MPVE double-wall corrugated pipe with high rolling resistance |
| CN110815764A (en) * | 2019-10-08 | 2020-02-21 | 江西省得一康管业有限公司 | Preparation method and detection equipment of MPVE double-wall corrugated pipe with high bending strength resistance |
| CN110815764B (en) * | 2019-10-08 | 2021-08-24 | 江西省得一康管业有限公司 | Detection equipment for MPVE double-wall corrugated pipe with high bending strength resistance |
| CN112344109A (en) * | 2020-11-06 | 2021-02-09 | 贵州黔峰实业有限公司 | Preparation and production process of modified polypropylene flat-wall reinforced corrugated pipe |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105754215A (en) | Manufacturing method of PP (polypropylene) double-wall corrugated pipe | |
| CN1265955C (en) | Microcellular foam extrusion/blow molding process and article made thereby | |
| CN103571039B (en) | High melting means polypropene composition and preparation method thereof | |
| CN102869484A (en) | Method for producing composite pellet for extrusion molding, and composite pellet for extrusion molding produced by the method | |
| CN102320137B (en) | Preparation device of ultra-high molecular weight polyethylene sheets and preparation method thereof | |
| CN201158136Y (en) | Novel wood-plastic composite material extruding machine | |
| CN111040277A (en) | Filling master batch for inner wall of high-strength polyethylene double-wall corrugated pipe and manufacturing method thereof | |
| CN103786324A (en) | Process for producing double-wall corrugated pipe | |
| CN105599224A (en) | PP (Polypropylene) plastic injection molding machine | |
| CN103831966A (en) | Method for manufacturing heat-resistance polylactic acid water bottle | |
| CN101537712A (en) | Continuous production technology of polyvinyl chloride pipe stretched in two directions | |
| CN105832542A (en) | Hanging ring integrated infusion bottle (bag) and manufacturing method thereof | |
| CN100457424C (en) | Process for producing large caliber hard polyvinyl chloride double wall corrugated pipe | |
| CN103665527B (en) | Special polyolefin resin modified composition for rotational molded products and preparation method thereof | |
| CN104760261A (en) | Preparation process of PE (Poly Ethylene) ultra-large-diameter thin-wall pipe material | |
| CN104046050A (en) | Wood-plastic composite material and profile manufacturing process | |
| CN100354104C (en) | Equipment and process of high polymer polyblend mixing forming | |
| CN101844384A (en) | Preparation method of large-caliber plastic pipe | |
| CN116175934A (en) | Production method of packaging barrel for ultra-high purity chemicals | |
| CN214448310U (en) | High-efficient PVC-O tubular product extrusion moulding device | |
| CN104260318A (en) | Method for improving roughness of inner wall and outer wall of PE solid-wall pipeline | |
| CN103665904A (en) | Manufacturing method of wood-plastic composite material and profiles thereof | |
| CN209937615U (en) | Screw type plastic extrusion device for manufacturing peroxide crosslinked polyethylene pipe | |
| CN101249717A (en) | Method and equipment for manufacturing fire engine hose | |
| CN105252746A (en) | Hollow extruding-blowing forming machine used for producing plastic bottle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: Wuling Road Development Zone in Taizhou City, Jiangsu province 225300 No. 86 Building No. 1 Applicant after: TAIZHOU YAMEI YUHE NEW MATERIALS CO., LTD. Address before: 225300 Jiangsu Province, Taizhou City High Tech Park Road Economic Development Zone along the west side of the rainbow Applicant before: TAIZHOU YAMEI YUHE NEW MATERIALS CO., LTD. |
|
| CB02 | Change of applicant information | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160713 |
|
| RJ01 | Rejection of invention patent application after publication |