CN111472431A - PVC-U plastic drainage ditch body and production method thereof - Google Patents

PVC-U plastic drainage ditch body and production method thereof Download PDF

Info

Publication number
CN111472431A
CN111472431A CN202010456685.6A CN202010456685A CN111472431A CN 111472431 A CN111472431 A CN 111472431A CN 202010456685 A CN202010456685 A CN 202010456685A CN 111472431 A CN111472431 A CN 111472431A
Authority
CN
China
Prior art keywords
pvc
drainage ditch
drainage
plastic
production
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
Application number
CN202010456685.6A
Other languages
Chinese (zh)
Inventor
何正炎
刘玉鹏
陈焕静
段洪文
韩力
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tianjin Yonggao Plastic Industry Development Co ltd
Original Assignee
Tianjin Yonggao Plastic Industry Development Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tianjin Yonggao Plastic Industry Development Co ltd filed Critical Tianjin Yonggao Plastic Industry Development Co ltd
Priority to CN202010456685.6A priority Critical patent/CN111472431A/en
Publication of CN111472431A publication Critical patent/CN111472431A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F3/00—Sewer pipe-line systems
    • E03F3/04—Pipes or fittings specially adapted to sewers
    • E03F3/046—Open sewage channels
    • 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
    • B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L27/00—Compositions 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; Compositions of derivatives of such polymers
    • C08L27/02—Compositions 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; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L27/04—Compositions 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; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
    • C08L27/06—Homopolymers or copolymers of vinyl chloride
    • 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
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2237—Oxides; Hydroxides of metals of titanium
    • C08K2003/2241—Titanium dioxide
    • 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
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend

Abstract

The invention provides a PVC-U plastic drainage ditch body, which comprises a drainage ditch body and a plurality of supporting pieces, wherein the drainage ditch body is arranged in a split manner; the escape canal includes water drainage tank, is equipped with on the support piece with water drainage tank matched with spacing groove, water drainage tank can clamp in the spacing inslot makes escape canal and support piece fixed connection, and the cross section department in the escape canal is the same. Due to the split design of the drainage ditch and the reinforcing ribs, the cross section of the projection of the drainage ditch in the axis direction is equal everywhere, so that the drainage ditch provided by the invention is suitable for more production processes. The invention also provides a production method of the PVC-U plastic drainage ditch body, the drainage ditch is produced by using the production process of extrusion molding, the limit of the axial size of a mould in the injection molding process can be removed, the producible size of the ditch body is larger than 1m, and the length of the ditch body can be arbitrarily cut and changed according to actual requirements in the production process, so that the production efficiency of the drainage ditch is improved.

Description

PVC-U plastic drainage ditch body and production method thereof
Technical Field
The invention relates to the technical field of drainage ditches, in particular to a PVC-U plastic drainage ditch body and a production method thereof.
Background
The plastic drainage ditch is used as a novel green environment-friendly energy-saving building material for ground rainwater drainage, and provides a brand-new drainage comprehensive solution for city construction in the aspects of realizing city building energy conservation, improving building grade, meeting sponge city design and the like. Compared with the traditional gravel concrete drainage ditch, the plastic linear drainage ditch has the advantages of large continuous drainage quantity, smooth and non-permeable surface, long corrosion resistance life, light weight, easy construction, good maintenance and the like, and the plastic drainage ditch gradually replaces the traditional drainage ditch and is adopted in large quantity. At present, the escape canal on the market is because in order to guarantee the compressive strength of the escape canal body, an organic whole is fixed with the strengthening rib on the general canal body, and the strengthening rib distributes and makes the projected cross-section of this kind of escape canal body on the axis direction not everywhere equal, only accessible die-casting or injection moulding to make product production cycle longer, improved manufacturing cost, simultaneously because strengthening rib part size is thicker, make the big yielding of product shrink, and then influence the result of use.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a PVC-U plastic drainage ditch body and a production method thereof.
The technical problem to be solved by the invention is realized by adopting the following technical scheme:
a PVC-U plastic drainage ditch body comprises a drainage ditch body and a plurality of supporting pieces, wherein the drainage ditch body is arranged in a split mode; the escape canal is including water drainage tank, be equipped with on the support piece with water drainage tank matched with spacing groove, water drainage tank can clamp in the spacing inslot and make escape canal and support piece fixed connection, cross section department in the escape canal is the same.
Preferably, the top surfaces of the two ends of the drainage groove are respectively fixed with a supporting platform which is integrated with the drainage groove.
Preferably, the tray table is inwardly opened in a shape of 'L'.
Preferably, the open end of the bottom of the support table is fixedly connected with the end face of the top of the drainage groove.
A production method of the PVC-U plastic drainage ditch body comprises the following production steps,
(1) firstly, a drainage ditch is produced, and an extrusion molding process is adopted for producing the drainage ditch;
(2) then producing the support;
(3) and assembling the drainage ditch and the supporting piece.
Preferably, the production process of the drainage ditch is as follows,
(1) preparing materials required by the drainage ditch production;
(2) conveying the prepared materials to a hopper of a plastic extruding machine;
(3) and performing extrusion molding and post-treatment on the prepared materials in the hopper.
Preferably, the base materials required by the drainage ditch production comprise PVC five-type resin powder, calcium carbonate, a stabilizer, a toner, a lubricant and a toughening agent, wherein the PVC five-type resin powder, the calcium carbonate, the stabilizer, the toner, the lubricant and the toughening agent are specifically mixed according to a ratio of 100: 8.5-16.5: 2.15-2.85: 0.51-0.69: 5.1-6.9.
Preferably, the production process of the supporting member is as follows,
(1) preparing materials required by the production of the supporting piece;
(2) and conveying the prepared material to a hopper of a PVC special injection molding machine for injection molding and post-processing.
Preferably, the base material required by the production of the support piece comprises PVC eight-type resin powder, calcium carbonate, a stabilizer, a toner, a lubricant, a processing aid and a solid plasticizer, wherein the PVC eight-type resin powder, the calcium carbonate, the stabilizer, the toner, the lubricant, the processing aid and the solid plasticizer are preferably weighed according to the mass ratio of 100: 8.5-11.5: 4.25-5.75: 1.96-2.64: 0.68-0.82: 2.15-2.85: 1.45-1.95.
The invention has the advantages and positive effects that:
1. the invention designs the reinforcing rib part of the drainage ditch in the prior art into the supporting piece which is arranged separately from the drainage ditch, so that the projected cross section of the drainage ditch in the axis direction is equal everywhere, thus the drainage ditch provided by the invention is suitable for more production processes, and the wall thickness of the drainage ditch is reduced to a certain extent, thereby the invention can accelerate the cooling time and reduce the shrinkage deformation in the processing process, further the production efficiency of the invention is improved, and the production cost of the invention is reduced.
2. Due to the split design of the drainage ditch and the reinforcing ribs, the supporting distance can be randomly adjusted according to different installation occasions and pressure-bearing scenes of the drainage ditch in the practical application process, so that the production cost of unnecessary supporting pieces is saved.
3. The drainage ditch is produced by using the extrusion molding production process, so that the limitation of the axial size of a mold in the injection molding process can be removed, the producible size of the ditch body is larger than 1m, the length of the ditch body can be cut and changed randomly according to actual requirements in the production process, and the production efficiency of the drainage ditch is improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the construction of the drain of the present invention;
fig. 3 is a schematic structural view of the support member of the present invention.
In the figure: 1. a drainage ditch; 2. a support member; 11. a water discharge tank; 12. a saddle; 21. a limiting groove; 22. a counterbore.
Detailed Description
The embodiments of the invention will be described in further detail below with reference to the accompanying drawings:
as shown in figure 1, the invention provides a PVC-U plastic drainage ditch body, which comprises a drainage ditch 1 body and a plurality of supporting pieces 2, wherein the drainage ditch body is arranged in a split mode; a plurality of support piece 2 distribute and are fixed in the below in escape canal 1, escape canal 1 is including water drainage tank 11, be equipped with on support piece 2 with water drainage tank 11 matched with spacing groove 21, water drainage tank 11 can clamp and make escape canal 1 and support piece 2 fixed connection in spacing groove 21, just cross section department in the escape canal 1 is the same. It should be noted that, in this embodiment, the drainage ditch 1 and the support member 2 are both made of PVC-U, and such materials have the advantages of excellent physical and chemical properties, chemical corrosion resistance, high impact strength, small fluid resistance, aging resistance, and long service life, so that the use effect of the present invention can be improved.
Further, as shown in fig. 1 and 2, pallets 12 integrally arranged with the drainage channel 11 are respectively fixed on top surfaces of two ends of the drainage channel 11, the drainage channel 11 is used for draining water, and the pallets 12 are used for supporting the water leakage cover plate.
Further, as shown in fig. 1 and 2, the tray table 12 is opened inward to form an "L" shape for limiting the water leakage cover plate.
Further, as shown in fig. 1 and 2, the bottom opening end of the pallet 12 is fixedly connected with the top end surface of the drainage channel 11.
In this embodiment, since the cross section of the drainage ditch 1 in the direction perpendicular to the axis of the drainage ditch 1 is the same everywhere, the drainage ditch 1 provided by the present invention can be applied to more production processes, such as a plastic extruding machine, which is mainly used for the mass continuous production of various products with the same cross section, and for the drainage ditch 1 in the prior art, because there is no cross section with the same everywhere in any direction, the plastic extruding machine cannot be used for production, and a die casting or injection molding process is often selected, and in such production processes, because of the limitation of the size of the machine and the die, the length of the produced drainage ditch 1 can not exceed 1m, when the longer drainage ditch 1 is constructed, the construction is time-consuming and the joints are more prone to leak, on the contrary, the drainage ditch 1 provided by the present invention can be continuously extruded and molded by the plastic extruding machine due to the optimization of the structure, therefore, the length of the cable can be adjusted at will by cutting, the cable has the advantage of being freely customized according to the practical application environment, and meanwhile, the number of the installation joints can be reduced, so that the leakage hidden danger can be effectively reduced, and the working stability of the cable is improved. It should be added that, in the actual processing, the drainage channel 11 and the pallet 12 are processed into a whole by an extruder in one step.
As shown in fig. 1, 2, and 3, in the present embodiment, the support member 2 has a rectangular parallelepiped shape with a stopper groove 21. Meanwhile, it is to be supplemented that the bottom of the support member 2 is provided with a plurality of counter bores 22, and in this embodiment, the counter bores 22 are respectively disposed at two sides of two ends of the bottom of the support member 2 (i.e., at positions on the support member 2 that are thicker than two ends of the top), so that the thick portion on the support member 2 is convenient to cool, and meanwhile, the effect of preventing shrinkage deformation is also achieved, and meanwhile, certain production cost is also saved.
The invention also provides a production method of the PVC-U plastic drainage ditch body, which comprises the following production steps,
(1) firstly, a drainage ditch 1 is produced, and an extrusion molding process is adopted for producing the drainage ditch 1;
(2) then producing said support 2;
(3) and assembling the drainage ditch 1 and the support member 2.
Further, the production process of the drainage ditch 1 is specifically as follows,
(1) preparing materials required by the drainage ditch 1;
(2) conveying the prepared materials to a hopper of a plastic extruding machine;
(3) and performing extrusion molding and post-treatment on the prepared materials in the hopper.
Further, the base materials required by the drainage ditch 1 production comprise PVC five-type resin powder, calcium carbonate, a stabilizer, a toner, a lubricant and a toughening agent, wherein the PVC five-type resin powder, the calcium carbonate, the stabilizer, the toner, the lubricant and the toughening agent are specifically mixed according to a ratio of 100: 8.5-16.5: 2.15-2.85: 0.51-0.69: 5.1-6.9, wherein the optimal ratio is 100: 10-15: 2.5:2.5:0.6:6. Specifically, in the embodiment of the present invention, the peach calcium carbonate is light calcium carbonate, the stabilizer is a calcium-zinc composite stabilizer, the toner is rutile titanium dioxide, the lubricant is a combination of stearic acid and PE wax, and a ratio of the stearic acid to the PE wax is 1: 1, the toughening agent is a CPE toughening agent.
Specifically, the base materials for producing the drainage ditch 1 are weighed in proportion and then put into a high-speed kneader to be stirred and mixed, the rotation speed of a main machine is 670rpm, the temperature is raised to 133-137 ℃, a uniformly mixed mixture is obtained, the optimal temperature is 135 ℃, then the mixture is put into a low-speed stirrer to be cooled, the rotation speed of the main machine is 350rpm, the temperature is lowered to 48-52 ℃, a kneaded material is obtained, the optimal temperature is 50 ℃, then the kneaded material is conveyed to a storage bin for standby, the material preparation work is completed, then the kneaded material is conveyed into a hopper of an extruding machine through a pipe chain, the kneaded material is heated and extruded by a PVC high-speed double-screw machine set to form a drainage ditch 1 model, then the drainage ditch 1 model is subjected to post-treatment, specifically, the drainage ditch 1 model extruded by the extruding machine is cooled and shaped by a cooling device, and then the, and then, the drainage ditch 1 model after spray printing is pulled out through a traction device, a cutting machine is used for cutting the drainage ditch 1 model at a fixed length, and finally, the drainage ditch is packaged and stored after no problem is detected, so that the post-treatment is completed. The invention has the advantages that the drainage ditch 1 is produced by using the extrusion molding production process, so that the limitation of the axial size of a mold in the injection molding process can be removed from the drainage ditch 1, the producible size of the ditch body is larger than 1m, the leakage hidden danger caused by the fact that a large number of joints are needed when the length of the ditch body is short in the prior art can be effectively avoided, in addition, the length of the drainage ditch 1 can be randomly cut and changed according to the actual requirement in the production process, and the production efficiency and the use stability of the drainage ditch 1 are improved.
Further, the production process of the support 2 is as follows,
(1) preparing materials required by the production of the supporting piece 2;
(2) and conveying the prepared material to a hopper of a PVC special injection molding machine for injection molding and post-processing.
Further, the base material required by the production of the support piece 2 comprises PVC eight-type resin powder, calcium carbonate, a stabilizer, a toner, a lubricant, a processing aid and a solid plasticizer, wherein the PVC eight-type resin powder, the calcium carbonate, the stabilizer, the toner, the lubricant, the processing aid and the solid plasticizer are preferably weighed according to the mass ratio of 100: 8.5-11.5: 4.25-5.75: 1.96-2.64: 0.68-0.82: 2.15-2.85: 1.45-1.95, and the optimal ratio is 100: 10-15: 5:2.3:0.8:2.5: 1.7. Specifically, in this embodiment, the calcium carbonate is light calcium carbonate, the stabilizer is a calcium-zinc composite stabilizer, the toner is rutile titanium dioxide, the lubricant is a combination of stearic acid and PE wax, and the ratio of stearic acid to PE wax is 3: 1, the processing aid is AVR processing aid, and the solid plasticizer is PETS solid plasticizer.
Specifically, the base materials for producing the support member 2 are weighed in proportion and then put into a high-speed kneader to be stirred and mixed, the rotation speed of a main machine is 670rpm, the temperature is raised to 128-132 ℃, a uniformly mixed mixture is obtained, the optimal temperature is 130 ℃, then the mixture is put into a low-speed stirrer to be cooled, the rotation speed of the main machine is 350rpm, the temperature is lowered to 48-52 ℃, a kneaded material is obtained, the optimal temperature is 50 ℃, the material preparation work is completed, then the kneaded material is conveyed to a PVC double-screw granulator to be granulated, the produced granulated material is conveyed to a hopper of a PVC special injection molding machine through an air pipe and a Roots blower in sequence, the granulated material is heated and injected into a die through the PVC special injection molding machine, then the liquid in a die cavity is cooled and molded along with the temperature of the die to form a support member, specifically, after the mold is opened, the model of the support member 2 is trimmed at the water gap, and is packaged and stored after no problem is detected, so that the post-treatment is completed.
The working process of the invention is as follows:
in the production process, escape canal 1 passes through the continuous extrusion moulding of extruding machine, support piece 2 passes through injection molding machine injection moulding, the ditch body length of escape canal 1 cuts according to actual conditions in order to satisfy the demand. In the installation process, the drainage ditch 1 and the support piece 2 can be fixedly combined through bonding, and the fixing positions of the support piece 2 are uniformly or non-uniformly distributed according to the actual pressure bearing effect. And it should be noted that, in the installation process, the drainage channel 11 of the drainage ditch 1 can be just embedded into the limiting groove 21 of the supporting member 2, and when the drainage channel 11 is completely embedded into the limiting groove 21, no gap exists between the drainage channel 11 and the limiting groove 21, no gap exists between the bottom surface of the pallet 12 and the top surface of the supporting member 2, namely, the contact surface of the drainage ditch 1 and the supporting member 2 is attached everywhere after installation. In addition, in this embodiment, after the drainage ditch 1 and the support member 2 are installed, the outermost end surface of the drainage ditch 1 (i.e. the outer side surface of the pallet 12) and the outermost end surface of the support member 2 are on the same plane, so that the pallet 12 is supported at all positions, thereby improving the stability of the present invention.
It should be emphasized that the embodiments described herein are illustrative rather than restrictive, and thus the present invention is not limited to the embodiments described in the detailed description, but other embodiments derived from the technical solutions of the present invention by those skilled in the art are also within the scope of the present invention.

Claims (9)

1. The PVC-U plastic drainage ditch body is characterized in that: comprises a drainage ditch (1) body which is arranged in a split way and a plurality of supporting pieces (2); escape canal (1) is including water drainage tank (11), be equipped with on support piece (2) with water drainage tank (11) matched with spacing groove (21), water drainage tank (11) can clamp make escape canal (1) and support piece (2) fixed connection in spacing groove (21), cross section department in escape canal (1) is the same.
2. The PVC-U plastic gutter body according to claim 1, wherein: and supporting platforms (12) which are integrated with the drainage groove (11) are respectively fixed on the top surfaces of the two ends of the drainage groove (11).
3. The PVC-U plastic gutter body according to claim 1, wherein said pallet (12) is inwardly opened in the shape of L ".
4. The PVC-U plastic gutter body according to claim 1, wherein: the bottom opening end of the support table (12) is fixedly connected with the top end face of the drainage groove (11).
5. A method for producing the PVC-U plastic drainage ditch body applied to any one of claims 1 to 4, which is characterized in that:
(1) firstly, a drainage ditch (1) is produced, and an extrusion molding process is adopted for producing the drainage ditch (1);
(2) then producing the support (2);
(3) and assembling the drainage ditch (1) and the supporting piece (2).
6. The method for producing a PVC-U plastic gutter body according to claim 5, wherein: the production process of the drainage ditch (1) is as follows,
(1) preparing materials required by the drainage ditch (1);
(2) conveying the prepared materials to a hopper of a plastic extruding machine;
(3) and performing extrusion molding and post-treatment on the prepared materials in the hopper.
7. The method for producing a PVC-U plastic gutter body according to claim 6, wherein: the base materials required by the drainage ditch (1) production comprise PVC five-type resin powder, calcium carbonate, a stabilizer, a toner, a lubricant and a toughening agent, wherein the PVC five-type resin powder, the calcium carbonate, the stabilizer, the toner, the lubricant and the toughening agent are specifically mixed according to a ratio of 100: 8.5-16.5: 2.15-2.85: 0.51-0.69: 5.1-6.9.
8. The method for producing a PVC-U plastic gutter body according to claim 7, wherein: the production process of the support (2) is as follows,
(1) preparing materials required by the production of the supporting piece (2);
(2) and conveying the prepared material to a hopper of a PVC special injection molding machine for injection molding and post-processing.
9. The method for producing a PVC-U plastic gutter body according to claim 8, wherein: the base material required by the production of the support piece (2) comprises PVC eight-type resin powder, calcium carbonate, a stabilizer, a toner, a lubricant, a processing aid and a solid plasticizer, wherein the PVC eight-type resin powder, the calcium carbonate, the stabilizer, the toner, the lubricant, the processing aid and the solid plasticizer are well weighed according to the mass ratio of 100: 8.5-11.5: 4.25-5.75: 1.96-2.64: 0.68-0.82: 2.15-2.85: 1.45-1.95.
CN202010456685.6A 2020-05-26 2020-05-26 PVC-U plastic drainage ditch body and production method thereof Pending CN111472431A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010456685.6A CN111472431A (en) 2020-05-26 2020-05-26 PVC-U plastic drainage ditch body and production method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010456685.6A CN111472431A (en) 2020-05-26 2020-05-26 PVC-U plastic drainage ditch body and production method thereof

Publications (1)

Publication Number Publication Date
CN111472431A true CN111472431A (en) 2020-07-31

Family

ID=71760313

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010456685.6A Pending CN111472431A (en) 2020-05-26 2020-05-26 PVC-U plastic drainage ditch body and production method thereof

Country Status (1)

Country Link
CN (1) CN111472431A (en)

Similar Documents

Publication Publication Date Title
DK0921928T3 (en) Method of preventing uncontrolled polymer flow in preform neck termination during packing and cooling steps
CN101417484A (en) Forming die for concrete-filling core die
CN101131032A (en) Moulded glass fibre reinforced plastic grille and manufacturing method thereof
KR101634229B1 (en) Fuel-saving type method of manufacturing multiple wall sewer
CN103101169B (en) Coextruding method produces building plastic formwork technique and composite die
CN111472431A (en) PVC-U plastic drainage ditch body and production method thereof
CN104227929A (en) Injection molding method of fiber network-containing plastic board
KR100787208B1 (en) A process of manufacture pipe of intensity improvement type anf that device
CN104943122A (en) Gas-assisted mouth die assembly
CN101914982B (en) Heat preservation and decoration integrated plate of red mud plastic outer wall and production process thereof
CN112140600A (en) HDPE hollow wall winding pipe with two outlets in one direction and preparation method thereof
CN101722643A (en) Method for manufacturing one-step formed composite foamed plastic formwork
CN105415839A (en) Polyvinyl chloride co-extrusion wood-plastic plate and preparation method thereof
CN212477992U (en) PVC-U plastic drainage ditch body
CN212072872U (en) Double-wall corrugated pipe production device
KR101199741B1 (en) extruding mold for form product manufacturing
CN201024566Y (en) PCM cast in-situ reinforcement bar concrete internal model with reinforced rib
CN203185622U (en) Compound mold for producing construction plastic formwork by coextrusion method
KR100743217B1 (en) Pipe of intensity improvement type
CN204080582U (en) A kind of inner support hollow wood-plastic rectangular slab
KR20110040319A (en) Construction mold plastic panel for concrete slab
CN215661563U (en) Precise mold for injection molding part of automobile storage battery shell
KR100470840B1 (en) Protection pipe for electric wire etc.
KR101705567B1 (en) Fuel-saving type multiple wall sewer
CN219294630U (en) Inspection shaft injection mold

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination