CN1208687A - Composite plastic tube material, moulding die and prodn. art therefor - Google Patents
Composite plastic tube material, moulding die and prodn. art therefor Download PDFInfo
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- CN1208687A CN1208687A CN97114233A CN97114233A CN1208687A CN 1208687 A CN1208687 A CN 1208687A CN 97114233 A CN97114233 A CN 97114233A CN 97114233 A CN97114233 A CN 97114233A CN 1208687 A CN1208687 A CN 1208687A
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Abstract
The present invention provides a composite plastic pipe material and its production die equipment and production process, in particular, it relates to an underground pipeline material for discharging sewage and rainwater. Said invented plastic pipe is made up by using synthetic plastics or polymer through press forming process under the condition of hot state and plastic state, and its section structure is divided into three layers, in which its outer wall layer and inner wall layer are non foamed solid wall layer, and its middle layer is of foamed structure, and its prepared raw material is also divided into skin layer material and core layer material, these are respectively passed through two routes including hot-mixing, cold-mixing, extruding and feeding into die equipment, vacuum-sizing and cooling-forming so as to obtain the invented pipe material.
Description
The invention provides a kind of composite plastic pipe and production mould thereof and process, be specially adapted to sewage effluent or rainwater, as composite plastic pipe and the production mould and the process of underground installation.
The plastic tube of prior art is because in light weight, installs easily and is connected, and has the corrosion resistance advantage, so be widely used in underground piping.At present when solving the lighter tubing of the manufacturing, still wish to keep its rigidity and non-deformability, therefore developed bellows and match an outpost of the tax office legal system is managed, but, be subjected to significant limitation because of selling at exorbitant prices.
The object of the present invention is to provide a kind of in light weight, make simple, low-cost composite plastic pipe and production mould thereof and process.
The objective of the invention is to realize by following scheme:
Composite plastic pipe of the present invention is by the extrusion modling under hot state and mecystasis of synthetic plastic or polymer, and the cross-section structure of tubing is divided into three layers, and outer wall layer and inner wall layer are complete non-bubble solid wall layer, and the intermediate layer is a foaming structure.The plastic tube of this structure is compared with the tubing of same thickness, and economical with materials is in light weight.
The mould that composite plastic pipe is produced among the present invention, include the extrusion mouth, torpedo head, branch flow cone, current divider support, plug, mouthful mould and the calibration sleeve that are connected with extruder, technical characterictic of the present invention is two extrusion mouths that connect with different extruders respectively, an extrusion mouth is connected with double-deck flow splitter, another extrusion mouth communicates with a hole of shunting support, and the common Rui Kou of the outlet by the baffling plug and double-deck flow splitter is after the interflow ring communicates, by minute flow cone to die head exit.Such mould can make the cortex batching form outer wall and inner wall layer by double-deck flow splitter, the sandwich layer batching is introduced between outer wall layer and the inwall, be laminated together three by the interflow ring, form a continuous wall, produce inserts and parietal layer by the interlayer that finally rearranges.The outer shroud two of double-deck flow splitter is auspicious to be that taper, the section of interior ring are one horizontal y-shaped, and last two auspicious and the outer shrouds of y and the outlet of baffling plug communicate collaborating to encircle.Section is horizontal y-shaped interior ring, and its y is tight-lipped by the torpedo head.
Produce the process of composite plastic pipe among the present invention, technical process by batching, heat mix, coldly mix, extrude, mould, vacuum sizing, cooling form, batching is divided into cortex, sandwich layer batching, and, form tubing through vacuum sizing, cooling more respectively through overheated mixed, the cold mould that mixes, is expressed into.The cortex batching is made up of PVC, lubrication prescription, stabilizing agent, modifier.The sandwich layer batching is made up of PVC, lubrication prescription, stabilizing agent, modifier and blowing agent.When heat was used the high-speed mixer mix to 115 ℃ of material temperature with, speed enters batching in the cooler to be cooled off, and discharges standby when being cooled to 40 ℃.After the cortex batching is clamp-oned an extrusion mouth of mould by extruder, be divided into outer wall layer and inner wall layer through double-deck flow splitter; After sandwich layer batching is clamp-oned another extrusion mouth of mould by another extruder, converge the formation intermediate layer at the interflow ring through the outlet and the cortex of baffling plug.The trilaminate material that forms in the ring of interflow carries out vacuum sizing through dividing flow cone, plug and mouthful mould extrusion die at calibration sleeve.
The present invention compared with prior art has in light weightly, and technology is simple, and price is low, advantages such as economical with materials.
Description of drawings of the present invention is as follows:
Fig. 1 is the profile of composite plastic pipe among the present invention.
Fig. 2 is the profile of production mould among the present invention.
Fig. 3 is the flow chart of production technology among the present invention.
Below in conjunction with accompanying drawing, the present invention is described in further detail:
As shown in Figure 1, the tube wall of composite plastic pipe is divided into three layers, and wherein outer wall 1 and inwall 2 are the real parietal layer that does not foam fully, and intermediate layer 3 is the little foaming structure of closed pore.The insulation of this structural tube, soundproof effect be apparently higher than existing solid wall pipe material, and have in light weight, the effect of economical with materials.As shown in Figure 2, first extruder extruded cortex 4 and clamp-oned from of mould and mouthful enter, second extruder extruded sandwich layer 5, and flow splitter 6 makes the cortex from extruder be divided into two different garden shape layers 8 and 9 with current divider support 7, and co-extrusion die head heats with common method.Second extruder extruded sandwich layer 5 and annotated on the baffling plug 10 by the hole on the current divider support 7, forms along the materials flow of the constant speed of baffling plug 10 in the exit of baffling core 10.Then, the garden shape layer 8 that is divided into of cortex 4 and 9 and sandwich layer 5 form three-layer plastic complexs 12 by interflow ring 11.Torpedo head 13 usefulness common methods form pipe.The material speed that two extruders is extruded must be pressed sandwich layer 5 and cortex 4 outlet proportion control, when sandwich layer 4 is the expanded material that expands, does not expand because of pressure surpasses common level.In the co-extrusion die head outlet, synthetic has and three layers of final structure that Mass Distribution is relevant, and this distribution will remain to the outlet of extrusion die, and the three layers of complex 11 that form by this way produce final shape and size.Complex 11 flows through branch flow cone 14, flows through second current divider support 15 that can heat and adjust then, is shaped by plug 16 and mouthful mould 17 at last.Divide the runner of flow cone 14 to allow compound body and form the pipe bigger than final pipe diameter.After flowing through the current divider support 13 with the rib that separates tube wall, compound body 11 is fusion again in annular contraction mouth mould.Generation has smooth, that do not have defective, the fully uniform pipe 19 of surfaces externally and internally.After compound body leaves mould, by traditional calibration sleeve 18 sizings and cooling, if compound body less than significantly expanding, is just used the air pressure calibration sleeve.If compound body has remarkable expansion on diameter and thickness, special sandwich layer melt 5 is expansion melts, just with vacuum sizing cover 18, in this case, must provide sufficient space between die head exit and calibration sleeve 18, and sandwich layer 5 foamed plastics are expanded.In order to change the size of pipe 19, must replacement port mould 17 and plug 16, they are i.e. important components simply again.As shown in Figure 3, produce the process of composite plastic pipe and production mould and process among the present invention, technical process by batching, heat mix, coldly mix, extrude, mould, vacuum sizing, cooling form, batching is divided into cortex, sandwich layer batching, and respectively by two-way through overheatedly mixing, coldly mixing, be expressed into mould, form tubing through vacuum sizing, cooling again.The cortex batching is made up of PVC, lubrication prescription, stabilizing agent, modifier.The sandwich layer batching is made up of PVC, lubrication prescription, stabilizing agent, modifier and blowing agent.When heat was used the high-speed mixer mix to 115 ℃ of material temperature with, speed enters batching in the cooler to be cooled off, and discharges standby when being cooled to 40 ℃.After the cortex batching is clamp-oned an extrusion mouth of mould by extruder, be divided into outer wall layer and inner wall layer through double-deck flow splitter; After sandwich layer batching is clamp-oned another extrusion mouth of mould by another extruder, converge the formation intermediate layer at the interflow ring through the outlet and the cortex of baffling plug.The trilaminate material that forms in the ring of interflow carries out vacuum sizing through dividing flow cone, plug and mouthful mould extrusion die at calibration sleeve.In blending process, earlier PVC is put into high-speed mixer, then its raw material is put into mixer, the mixer of the most handy self-friction heating of high-speed mixer is behind the starting top gear, when expecting temperature to 115 ℃, enter in the cold mixer rapidly and cool off, discharge standbyly when temperature to be expected is cooled to 40 ℃, cortex and sandwich layer must separately be mixed, can be according to cortex and core layer thickness than two engine speeds of control feed ratio when.
Claims (9)
1. composite plastic pipe, the tubing of extrusion modling under hot state and mecystasis by synthetic plastic or polymer is characterized in that the cross-section structure of tubing is divided into three layers, and outer wall layer and inner wall layer are complete non-bubble solid wall layer, and the intermediate layer is a foaming structure.
2. mould of producing composite plastic pipe, include the extrusion mouth, torpedo head, branch flow cone, current divider support, plug, mouthful mould and the calibration sleeve that are connected with extruder, it is characterized in that having two extrusion mouths that connect with different extruders respectively, an extrusion mouth is connected with double-deck flow splitter, another extrusion mouth communicates with a hole of shunting support, and the common Rui Kou of the outlet by the baffling plug and double-deck flow splitter is after the interflow ring communicates, by minute flow cone to die head exit.
3. the mould of production composite plastic pipe according to claim 2 is characterized in that the outer shroud two of double-deck flow splitter is auspicious and is taper, and the section of interior ring is one horizontal y-shaped, and last two auspicious and the outer shrouds of y and the outlet of baffling plug communicate collaborating to encircle.
4. according to the mould of claim 2 or 3 described production composite plastic pipes, it is characterized in that section is horizontal y-shaped interior ring, its y is tight-lipped by the torpedo head.
5. process of producing composite plastic pipe, technical process by batching, heat mix, coldly mix, extrude, mould, vacuum sizing, cooling form, it is characterized in that batching is divided into cortex, sandwich layer batching, and, form tubing through vacuum sizing, cooling more respectively through overheated mixed, the cold mould that mixes, is expressed into.
6. the process of production composite plastic pipe according to claim 5 is characterized in that cortex batching is made up of PVC, lubrication prescription, stabilizing agent, modifier; The sandwich layer batching is made up of PVC, lubrication prescription, stabilizing agent, modifier and blowing agent.
7. according to the process of claim 5 or 6 described production composite plastic pipes, when it is characterized in that heat is used the high-speed mixer mix to 115 ℃ of material temperature with, speed enters batching in the cooler to be cooled off, and discharges standby when being cooled to 40 ℃.
8. according to the process of claim 5 or 6 described production composite plastic pipes, it is characterized in that the cortex batching is clamp-oned an extrusion mouth of mould by extruder after, be divided into outer wall layer and inner wall layer through double-deck flow splitter; After sandwich layer batching is clamp-oned another extrusion mouth of mould by another extruder, converge the formation intermediate layer at the interflow ring through the outlet and the cortex of baffling plug.
9. the process of production composite plastic pipe according to claim 8, the trilaminate material that forms in it is characterized in that collaborating to encircle carries out vacuum sizing through a minute flow cone, plug and mouthful mould extrusion die at calibration sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97114233A CN1208687A (en) | 1997-08-20 | 1997-08-20 | Composite plastic tube material, moulding die and prodn. art therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97114233A CN1208687A (en) | 1997-08-20 | 1997-08-20 | Composite plastic tube material, moulding die and prodn. art therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1208687A true CN1208687A (en) | 1999-02-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97114233A Pending CN1208687A (en) | 1997-08-20 | 1997-08-20 | Composite plastic tube material, moulding die and prodn. art therefor |
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| Country | Link |
|---|---|
| CN (1) | CN1208687A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102814961A (en) * | 2012-07-31 | 2012-12-12 | 昆山圣源机械有限公司 | Forming pipe extruding die with good layering effect |
| CN102814962A (en) * | 2012-07-31 | 2012-12-12 | 昆山圣源机械有限公司 | Die for manufacturing foaming pipe with reinforcing rib |
| CN103112143A (en) * | 2013-01-18 | 2013-05-22 | 镇江华伟塑管有限公司 | Method for manufacturing composite insulating pipe with high performance and low cost and special mold thereof |
| CN103286874A (en) * | 2013-05-20 | 2013-09-11 | 曹永良 | Special device for producing block-shaped hot melt pressure sensitive adhesive |
| CN108916495A (en) * | 2018-08-14 | 2018-11-30 | 广东联塑科技实业有限公司 | A kind of composite air duct of noise-reducing and heat preservation |
| CN112549482A (en) * | 2020-12-02 | 2021-03-26 | 荆州亮诚科技股份有限公司 | Production method of ratproof silicon core pipe |
| CN115782031A (en) * | 2023-02-09 | 2023-03-14 | 浙江建华集团盛太塑料有限公司 | Pearl cotton production equipment and process |
-
1997
- 1997-08-20 CN CN97114233A patent/CN1208687A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102814961A (en) * | 2012-07-31 | 2012-12-12 | 昆山圣源机械有限公司 | Forming pipe extruding die with good layering effect |
| CN102814962A (en) * | 2012-07-31 | 2012-12-12 | 昆山圣源机械有限公司 | Die for manufacturing foaming pipe with reinforcing rib |
| CN102814962B (en) * | 2012-07-31 | 2015-05-20 | 昆山圣源机械有限公司 | Die for manufacturing foaming pipe with reinforcing rib |
| CN102814961B (en) * | 2012-07-31 | 2015-11-18 | 昆山圣源机械有限公司 | The foaming tube extrusion die that a kind of layered effect is good |
| CN103112143A (en) * | 2013-01-18 | 2013-05-22 | 镇江华伟塑管有限公司 | Method for manufacturing composite insulating pipe with high performance and low cost and special mold thereof |
| CN103112143B (en) * | 2013-01-18 | 2015-04-01 | 镇江华伟塑管有限公司 | Method for manufacturing composite insulating pipe with high performance and low cost and special mold thereof |
| CN103286874A (en) * | 2013-05-20 | 2013-09-11 | 曹永良 | Special device for producing block-shaped hot melt pressure sensitive adhesive |
| CN108916495A (en) * | 2018-08-14 | 2018-11-30 | 广东联塑科技实业有限公司 | A kind of composite air duct of noise-reducing and heat preservation |
| CN112549482A (en) * | 2020-12-02 | 2021-03-26 | 荆州亮诚科技股份有限公司 | Production method of ratproof silicon core pipe |
| CN112549482B (en) * | 2020-12-02 | 2022-04-29 | 荆州亮诚科技股份有限公司 | Production method of ratproof silicon core pipe |
| CN115782031A (en) * | 2023-02-09 | 2023-03-14 | 浙江建华集团盛太塑料有限公司 | Pearl cotton production equipment and process |
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