CN105442637B - The manufacture method and well lid of a kind of compound die plastics well lid - Google Patents
The manufacture method and well lid of a kind of compound die plastics well lid Download PDFInfo
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- CN105442637B CN105442637B CN201510946172.2A CN201510946172A CN105442637B CN 105442637 B CN105442637 B CN 105442637B CN 201510946172 A CN201510946172 A CN 201510946172A CN 105442637 B CN105442637 B CN 105442637B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
- E02D29/14—Covers for manholes or the like; Frames for covers
- E02D29/1472—Cover entirely made of synthetic material
-
- 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
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/04—Ingredients characterised by their shape and organic or inorganic ingredients
-
- 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
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- 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
- C08K5/098—Metal salts of carboxylic acids
-
- 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
- C08K5/14—Peroxides
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- 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
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/14—Glass
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0004—Synthetics
- E02D2300/0006—Plastics
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- 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)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Sewage (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a kind of manufacture method of compound die plastics well lid and well lid, by preferred molding material formula, well lid bottom molding compound is pressed with well lid top layer molding compound composite under preferred process conditions.The manufacture method of compound die plastics well lid disclosed by the invention, using preferred molding material formula, using reinforcing material of the waste and old glass fabric as well lid bottom, both the waste glass fibre cloth that will not can have been degraded is fully utilized, humidification is served to well lid again, even across long-time using after aging, well lid is also due to the stretching action of glass fabric is without occurring monoblock fracture, it is safe, environmental protection；Compound die plastics well lid disclosed by the invention, service life is long, and aging speed is slow, and intensity is high, and cost is low, safe.
Description
Technical field
The present invention relates to the manufacture method and well of inspection shaft manufacturing technology field, more particularly to a kind of compound die plastics well lid
Lid.
Background technology
Inspection shaft be the power supply for Urban Underground infrastructure, feedwater, draining, blowdown, communication, cable television, gas pipe,
Public lighting circuit etc. repair, it is easy for installation and set.Be generally located at pipeline intersection, turning, caliber or gradient change, with
And locate at a certain distance on straight line pipeline section, it is easy for inspecting periodically auxiliary construction.Inspection shaft is used in one residential (inhabitation
Area, public building area, plant area etc.) in the range of buried plastics pipe road external diameter be not more than 800mm, the depth of burying no more than 6m,
It is generally located at drainage pipeline intersection, turning, caliber or gradient change, at drop etc., for the ease of inspecting periodically, cleaning
With dredging or down-hole operation inspection plastics integrated injection molding form or it is brick into well shape structures.And the work that well lid rises
With particularly significant, the cost of inspection shaft both it had been related to or had been related to the personal safety of the people, new SMC moulded well covers are one
New pattern manhole cover is planted, using compression molding, is used at -40 DEG C to 90 DEG C, service life 5-10 more than longer than casting iron well lid, extensively
Applied to engineerings such as municipal administration, pipeline, passage, power supply, water supply, but current SMC moulded well covers are typically all using unsaturated
Short glass fiber enhancing is added in polyester, but Shi Jishiyong process is easily broken by weight or aging, to making
Caused harm with safety.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of manufacture method of compound die plastics well lid, using preferred
Material formula is molded, service life is long, aging speed is slow, intensity is high, using increasing of the waste and old glass fabric as well lid bottom
Strong material, the waste glass fibre cloth that will not can have both degraded is fully utilized, and serves humidification to well lid,
Even across long-time using after aging, well lid is also due to the stretching action of glass fabric breaks without occurring monoblock
Split, safe, environmental protection, while also providing a kind of compound die plastics well lid.
In order to solve the above technical problems, the invention provides a kind of manufacture method of compound die plastics well lid, including it is following
Step：
Step 1: preparing well lid top layer molding compound composite；Well lid top layer molding compound composite is with mass percent
Meter is constituted according to following proportioning：191 unsaturated polyester resin 20%-30%, peroxidized t-butyl perbenzoate 0.2%-0.3%,
Zinc stearate 3%-8%, alkali-free short glass fiber 20%-30%, liquid paint 0.1%-0.2%, surplus are calcium carbonate, will
Above each group lease making kneader is more than 1 hour in 28-33 DEG C of kneading, kneading time.
Step 2: preparing well lid bottom moulding compound layer structure；The well lid bottom moulding compound stratiform structure fabrication step
For：Spread one layer of waste glass fibre cloth cut by size on the table first, surface is uniformly smeared moulding compound paste, then repaved
Moulding compound paste is uniformly smeared in one layer of waste glass fibre cloth for being cut by size, continuation on surface, so repeats 7-15 layers of laying；Institute
Moulding compound paste is stated to be calculated in mass percent according to following proportioning composition：Peroxidized t-butyl perbenzoate 0.5%-1.5%, hydroxide
Calcium 0.5%-1.5%, zinc stearate 0.5%-1.5%, liquid paint 0.1%-0.2%, surplus are 191 unsaturated polyester (UP) trees
Fat, particularly preferred, the moulding compound paste is calculated in mass percent to be constituted according to following proportioning：Peroxidized t-butyl perbenzoate
0.8%th, calcium hydroxide 1.2%, zinc stearate 0.9%, liquid paint 0.14%, surplus are 191 unsaturated polyester resins.
Step 3: well lid bottom moulding compound layer structure is laid on into well lid lower mould bottom.
Step 4: well lid top layer molding compound composite is uniformly laid on into well lid bottom moulding compound layer structure upper surface.
Upper die and lower die matched moulds is suppressed Step 5: opening hydraulic press, hydraulic press pressure is 26-30MPa, well lid mould
The lower mould temperature of tool is 140-150 DEG C, and well lid upper mould temperature is 150-160 DEG C, and the press time is 15-20 minutes.
It is particularly preferred, well lid top layer molding compound composite and the weight of the well lid bottom moulding compound layer structure
Than for 2: 1.
A kind of compound die plastics well lid, including：It is arranged on the well lid top layer molding compound composite layer on top and is arranged on down
The well lid bottom moulding compound layer structure in portion；The well lid bottom moulding compound layer structure includes the 7-15 layers being cascading
Molding compound, described molding compound includes the moulding compound paste layer for being arranged on top and the waste glass fibre cloth for being arranged on bottom
Layer.
It is particularly preferred, it is provided with alkali-free short glass fiber in well lid top layer molding compound composite layer.
(report number 150031115804) is examined by national chemical building material quality Supervision Test Center, the well lid
Test load 250kN, meets GB/T 23858-2009《Manhole cover》, well lid do not occur influence using function damage.
Beneficial effect：The manufacture method of compound die plastics well lid disclosed by the invention, using preferred molding material formula, is adopted
With reinforcing material of the waste and old glass fabric as well lid bottom, the waste glass fibre cloth that will not can have both degraded is obtained
Sufficiently utilize, and humidification is served to well lid, even across long-time using after aging, well lid is also due to glass
The stretching action of fiber cloth is without occurring monoblock fracture, safe, environmental protection；Compound die plastic well disclosed by the invention
Lid, service life is long, and aging speed is slow, and intensity is high, and cost is low, safe.
Brief description of the drawings
Fig. 1 is a kind of schematic flow sheet of the manufacture method of compound die plastics well lid of the invention；
Fig. 2 is a kind of structural representation of compound die plastics well lid of the invention.
In figure, 1, well lid top layer molding compound composite layer, 2, moulding compound paste layer, 3, waste glass fibre layer of cloth.
Embodiment
Some vocabulary have such as been used to censure specific components among specification and claim.Those skilled in the art should
It is understood that hardware manufacturer may call same component with different nouns.This specification and claims are not with name
The difference of title is used as the mode for distinguishing component, but is used as the criterion of differentiation with the difference of component functionally.Such as logical
The " comprising " of piece specification and claim mentioned in is an open language, therefore should be construed to " including but do not limit
In ".Specification subsequent descriptions for implement the present invention better embodiment, so it is described description be with illustrate the present invention general original
For the purpose of then, the scope of the present invention is not limited to.Protection scope of the present invention when regard the appended claims person of defining as
It is accurate.
The present invention is described in further detail below in conjunction with accompanying drawing, but it is not as a limitation of the invention.
As shown in figure 1, a kind of manufacture method of compound die plastics well lid, comprises the following steps：
Step 1: preparing well lid top layer molding compound composite；Well lid top layer molding compound composite is with mass percent
Meter is constituted according to following proportioning：191 unsaturated polyester resin 20%-30%, peroxidized t-butyl perbenzoate 0.2%-0.3%,
Zinc stearate 3%-8%, alkali-free short glass fiber 20%-30%, liquid paint 0.1%-0.2%, surplus are calcium carbonate, will
Above each group lease making kneader is more than 1 hour in 28-33 DEG C of kneading, kneading time.
Step 2: preparing well lid bottom moulding compound layer structure；The well lid bottom moulding compound stratiform structure fabrication step
For：Spread one layer of waste glass fibre cloth cut by size on the table first, surface is uniformly smeared moulding compound paste, then repaved
Moulding compound paste is uniformly smeared in one layer of waste glass fibre cloth for being cut by size, continuation on surface, so repeats 7-15 layers of laying；Institute
Moulding compound paste is stated to be calculated in mass percent according to following proportioning composition：Peroxidized t-butyl perbenzoate 0.5%-1.5%, hydroxide
Calcium 0.5%-1.5%, zinc stearate 0.5%-1.5%, liquid paint 0.1%-0.2%, surplus are 191 unsaturated polyester (UP) trees
Fat.
Step 3: well lid bottom moulding compound layer structure is laid on into well lid lower mould bottom.
Step 4: well lid top layer molding compound composite is uniformly laid on into well lid bottom moulding compound layer structure upper surface.
Upper die and lower die matched moulds is suppressed Step 5: opening hydraulic press, hydraulic press pressure is 26-30MPa, well lid mould
The lower mould temperature of tool is 140-150 DEG C, well lid upper mould temperature be 150-160 DEG C of press time be 15-20 minutes.
It is particularly preferred, well lid top layer molding compound composite and the weight of the well lid bottom moulding compound layer structure
Than for 2: 1.
As shown in Fig. 2 a kind of compound die plastics well lid, including：It is arranged on the well lid top layer molding compound composite layer 1 on top
With the well lid bottom moulding compound layer structure for being arranged on bottom；The well lid bottom moulding compound layer structure includes stacking gradually setting
The 7-15 layer molding compounds put, described molding compound includes being arranged on the moulding compound paste layer 2 on top and is arranged on the useless of bottom
Fiberglass cloth 3.
It is particularly preferred, it is provided with alkali-free short glass fiber in well lid top layer molding compound composite layer 1.
Particularly preferred, the test load of the well lid is more than or equal to 250kN.
Embodiment 1
A kind of manufacture method of compound die plastics well lid, comprises the following steps：
Step 1: preparing well lid top layer molding compound composite；Well lid top layer molding compound composite is with mass percent
Meter is constituted according to following proportioning：191 unsaturated polyester resins 20%, peroxidized t-butyl perbenzoate 0.2%, zinc stearate 3%,
Alkali-free short glass fiber 20%, liquid paint 0.1%, surplus are calcium carbonate, and above each group lease making kneader is pinched at 28 DEG C
Close, kneading time is more than 1 hour.
Step 2: preparing well lid bottom moulding compound layer structure；The well lid bottom moulding compound stratiform structure fabrication step
For：Spread one layer of waste glass fibre cloth cut by size on the table first, surface is uniformly smeared moulding compound paste, then repaved
Moulding compound paste is uniformly smeared in one layer of waste glass fibre cloth for being cut by size, continuation on surface, so repeats 15 layers of laying；It is described
Moulding compound paste is calculated in mass percent to be constituted according to following proportioning：Peroxidized t-butyl perbenzoate 1.5%, calcium hydroxide 1.5%,
Zinc stearate 1.5%, liquid paint 0.2%, surplus are 191 unsaturated polyester resins.
Step 3: well lid bottom moulding compound layer structure is laid on into well lid lower mould bottom.
Step 4: well lid top layer molding compound composite is uniformly laid on into well lid bottom moulding compound layer structure upper surface.
Upper die and lower die matched moulds is suppressed Step 5: opening hydraulic press, hydraulic press pressure is 26MPa, well lid mould
Lower mould temperature is 140 DEG C, and well lid upper mould temperature is 150 DEG C, and the press time is 15 minutes.
It is particularly preferred, well lid top layer molding compound composite and the weight of the well lid bottom moulding compound layer structure
Than for 2: 1.
Embodiment 2
A kind of manufacture method of compound die plastics well lid, comprises the following steps：
Step 1: preparing well lid top layer molding compound composite；Well lid top layer molding compound composite is with mass percent
Meter is constituted according to following proportioning：191 unsaturated polyester resins 30%, peroxidized t-butyl perbenzoate 0.3%, zinc stearate 8%,
Alkali-free short glass fiber 30%, liquid paint 0.2%, surplus are calcium carbonate, and above each group lease making kneader is pinched at 33 DEG C
Close, kneading time is more than 1 hour.
Step 2: preparing well lid bottom moulding compound layer structure；The well lid bottom moulding compound stratiform structure fabrication step
For：Spread one layer of waste glass fibre cloth cut by size on the table first, surface is uniformly smeared moulding compound paste, then repaved
Moulding compound paste is uniformly smeared in one layer of waste glass fibre cloth for being cut by size, continuation on surface, so repeats 7 layers of laying；It is described
Moulding compound paste is calculated in mass percent to be constituted according to following proportioning：Peroxidized t-butyl perbenzoate 0.5%, calcium hydroxide 0.5%,
Zinc stearate 0.5%, liquid paint 0.1%, surplus are 191 unsaturated polyester resins.
Step 3: well lid bottom moulding compound layer structure is laid on into well lid lower mould bottom.
Step 4: well lid top layer molding compound composite is uniformly laid on into well lid bottom moulding compound layer structure upper surface.
Upper die and lower die matched moulds is suppressed Step 5: opening hydraulic press, hydraulic press pressure is 30MPa, well lid mould
Lower mould temperature is 150 DEG C, and well lid upper mould temperature is 160 DEG C, and the press time is 20 minutes.
It is particularly preferred, well lid top layer molding compound composite and the weight of the well lid bottom moulding compound layer structure
Than for 2: 1.
Embodiment 3
A kind of manufacture method of compound die plastics well lid, comprises the following steps：
Step 1: preparing well lid top layer molding compound composite；Well lid top layer molding compound composite is with mass percent
Meter is constituted according to following proportioning：191 unsaturated polyester resins 26%, peroxidized t-butyl perbenzoate 0.26%, zinc stearate
4.5%th, alkali-free short glass fiber 24%, liquid paint 0.16%, surplus are calcium carbonate, and above each group lease making kneader is existed
31 DEG C of kneadings, kneading time is more than 1 hour.
Step 2: preparing well lid bottom moulding compound layer structure；The well lid bottom moulding compound stratiform structure fabrication step
For：Spread one layer of waste glass fibre cloth cut by size on the table first, surface is uniformly smeared moulding compound paste, then repaved
Moulding compound paste is uniformly smeared in one layer of waste glass fibre cloth for being cut by size, continuation on surface, so repeats 11 layers of laying；It is described
Moulding compound paste is calculated in mass percent to be constituted according to following proportioning：Peroxidized t-butyl perbenzoate 0.8%, calcium hydroxide 1.2%,
Zinc stearate 0.9%, liquid paint 0.14%, surplus are 191 unsaturated polyester resins.
Step 3: well lid bottom moulding compound layer structure is laid on into well lid lower mould bottom.
Step 4: well lid top layer molding compound composite is uniformly laid on into well lid bottom moulding compound layer structure upper surface.
Upper die and lower die matched moulds is suppressed Step 5: opening hydraulic press, hydraulic press pressure is 28MPa, well lid mould
Lower mould temperature is 144 DEG C, and well lid upper mould temperature is 157 DEG C, and the press time is 18 minutes.
It is particularly preferred, well lid top layer molding compound composite and the weight of the well lid bottom moulding compound layer structure
Than for 2: 1.
The manufacture method of compound die plastics well lid disclosed by the invention, using preferred molding material formula, using waste and old
Glass fabric is as the reinforcing material of well lid bottom, and the waste glass fibre cloth that will not can have both degraded obtained sufficient profit
With and serving humidification to well lid, even across long-time using after aging, well lid is also due to glass fabric
Stretching action is without occurring monoblock fracture, safe, environmental protection；Compound die plastics well lid disclosed by the invention, is used
Long lifespan, aging speed is slow, and intensity is high, and cost is low, safe.
Some preferred embodiments of the present invention have shown and described in described above, but as previously described, it should be understood that the present invention
Be not limited to form disclosed herein, be not to be taken as the exclusion to other embodiment, and available for various other combinations,
Modification and environment, and above-mentioned teaching or the technology or knowledge of association area can be passed through in invention contemplated scope described herein
It is modified., then all should be in this hair and the change and change that those skilled in the art are carried out do not depart from the spirit and scope of the present invention
In the protection domain of bright appended claims.
Claims (9)
1. a kind of manufacture method of compound die plastics well lid, it is characterised in that comprise the following steps：
Step 1: prepare well lid top layer molding compound composite, well lid top layer molding compound composite be calculated in mass percent by
According to following proportioning composition：191 unsaturated polyester resin 20%-30%, peroxidized t-butyl perbenzoate 0.2%-0.3%, tristearin
Sour zinc 3%-8%, alkali-free short glass fiber 20%-30%, liquid paint 0.1%-0.2%, surplus are calcium carbonate, by more than
Each group lease making kneader is more than 1 hour in 28-33 DEG C of kneading, kneading time；
Step 2: preparing well lid bottom moulding compound layer structure；
Step 3: well lid bottom moulding compound layer structure is laid on into well lid lower mould bottom；
Step 4: well lid top layer molding compound composite is uniformly laid on into well lid bottom moulding compound layer structure upper surface；
Step 5: open hydraulic press carries out compacting compound die plastics well lid by upper die and lower die matched moulds.
2. the manufacture method of compound die plastics well lid according to claim 1, it is characterised in that in the step 2, institute
Stating well lid bottom moulding compound stratiform structure fabrication step is：Spread one layer of waste glass fibre cut by size on the table first
Moulding compound paste is uniformly smeared on cloth, surface, then repaves one layer of waste glass fibre cloth cut by size, and continuation is uniformly applied on surface
Moulding compound paste is smeared, 7-15 layers of laying is so repeated.
3. the manufacture method of compound die plastics well lid according to claim 2, it is characterised in that the moulding compound paste is with matter
Percentage meter is measured to constitute according to following proportioning：Peroxidized t-butyl perbenzoate 0.5%-1.5%, calcium hydroxide 0.5%-1.5%,
Zinc stearate 0.5%-1.5%, liquid paint 0.1%-0.2%, surplus are 191 unsaturated polyester resins.
4. the manufacture method of compound die plastics well lid according to claim 3, it is characterised in that the moulding compound paste is with matter
Percentage meter is measured to constitute according to following proportioning：Peroxidized t-butyl perbenzoate 0.8%, calcium hydroxide 1.2%, zinc stearate
0.9%th, liquid paint 0.14%, surplus are 191 unsaturated polyester resins.
5. the manufacture method of compound die plastics well lid according to claim 1, it is characterised in that the well lid top layer molding
Feed composition and the weight ratio of the well lid bottom moulding compound layer structure are 2: 1.
6. the manufacture method of compound die plastics well lid according to claim 1, it is characterised in that in the step 5, liquid
Press pressure is 26-30MPa, and well lid lower mould temperature is 140-150 DEG C, and well lid upper mould temperature is 150-160 DEG C, pressure
Time processed is 15-20 minutes.
7. a kind of well lid that manufacture method according to compound die plastics well lid described in claim 1 is manufactured, it is characterised in that bag
Include：The well lid top layer molding compound composite layer (1) for being arranged on top and the well lid bottom moulding compound layer structure for being arranged on bottom；
The well lid bottom moulding compound layer structure includes the 7-15 layer molding compounds being cascading, and described molding compound includes
The moulding compound paste layer (2) for being arranged on top and the waste glass fibre layer of cloth (3) for being arranged on bottom.
8. well lid according to claim 7, it is characterised in that be provided with nothing in well lid top layer molding compound composite layer (1)
Alkali short glass fiber.
9. well lid according to claim 7, it is characterised in that the test load of the well lid is more than or equal to 250kN.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510946172.2A CN105442637B (en) | 2015-12-07 | 2015-12-07 | The manufacture method and well lid of a kind of compound die plastics well lid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510946172.2A CN105442637B (en) | 2015-12-07 | 2015-12-07 | The manufacture method and well lid of a kind of compound die plastics well lid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105442637A CN105442637A (en) | 2016-03-30 |
| CN105442637B true CN105442637B (en) | 2017-07-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510946172.2A Active CN105442637B (en) | 2015-12-07 | 2015-12-07 | The manufacture method and well lid of a kind of compound die plastics well lid |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110387115A (en) * | 2019-07-24 | 2019-10-29 | 民勤县腾宇工贸有限公司 | A kind of manufacturing method and well lid of NEW TYPE OF COMPOSITE moulding compound well lid |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2527509C (en) * | 2002-06-14 | 2009-09-01 | Ace Tire & Parts, Inc. | Recyclable composite material and method of using composite |
| CN101265710A (en) * | 2007-03-12 | 2008-09-17 | 黄亮 | Compound resin hole cover and its manufacture method |
| CN101338077A (en) * | 2007-07-02 | 2009-01-07 | 威海市鸿益塑料有限公司 | Silicon plastic composite template and production method |
| CN102633468B (en) * | 2012-02-27 | 2013-10-02 | 成都易信达科技有限公司 | High-strength manhole cover |
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