CN110920028A - Processing and manufacturing method of PC drinking water tank - Google Patents
Processing and manufacturing method of PC drinking water tank Download PDFInfo
- Publication number
- CN110920028A CN110920028A CN201911256657.3A CN201911256657A CN110920028A CN 110920028 A CN110920028 A CN 110920028A CN 201911256657 A CN201911256657 A CN 201911256657A CN 110920028 A CN110920028 A CN 110920028A
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- CN
- China
- Prior art keywords
- drinking water
- water tank
- ions
- processing
- temperature
- 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.)
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Classifications
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C49/06—Injection blow-moulding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/02—Conditioning or physical treatment of the material to be shaped by heating
- B29B13/022—Melting the material to be shaped
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/72—Heating or cooling
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/28—Blow-moulding apparatus
- B29C49/30—Blow-moulding apparatus having movable moulds or mould parts
- B29C49/36—Blow-moulding apparatus having movable moulds or mould parts rotatable about one axis
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/78—Measuring, controlling or regulating
- B29C49/786—Temperature
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/78—Measuring, controlling or regulating
- B29C49/80—Testing, e.g. for leaks
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C2049/023—Combined blow-moulding and manufacture of the preform or the parison using inherent heat of the preform, i.e. 1 step blow moulding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2022/00—Hollow articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/712—Containers; Packaging elements or accessories, Packages
Abstract
The invention discloses a processing and manufacturing method of a PC drinking water tank, which comprises the following steps: preparing a PC ionic material; adding a polytetrafluoroethylene material into the PC ionic material; preheating the PC ions and the polytetrafluoroethylene material; heating the preheated PC ions and the polytetrafluoroethylene material to obtain injection molding liquid; injecting the injection molding liquid into a mold to form a bottle blank; the bottle embryo is covered with LCP film; performing drawing molding on the bottle blank; cooling by adopting a cooling pipe to ensure uniform cooling; uneven cooling can not be caused, and the quality of the product is greatly improved; the invention can improve the uniformity of bottle blanks by a centrifugal blow molding method, and further improve the quality of products; according to the invention, the production efficiency is improved, the manpower is saved, the production process is reduced and the product quality is improved by drying PC ions, centrifugally blow-molding into bottle blanks and heating and stretching.
Description
Technical Field
The invention relates to a processing and manufacturing method of a PC drinking water tank, belonging to the technical field of drinking water tank processing.
Background
Along with the improvement of living standard, people's requirement to quoting water is also higher and higher, many enterprises begin to produce a large amount of drinking water, also improve greatly to holding the drinking water tank requirement of drinking water, some bad wastrel appear easily in the in-process quality of current drinking water tank in the production, reduced the quality of product, influenced the sale of product simultaneously, in the product is moulded and is blown up the in-process, the blow-up degree of wall thickness is different, at the biggest position that blows up of bottle, because circular bottle embryo is at the biggest position that blows up, the wall thickness is too thick, very easily warp during the cooling, hardly process out complete shape.
Disclosure of Invention
The invention aims to provide a processing and manufacturing method of a PC drinking water tank, which aims to overcome the defect of poor production quality of the drinking water tank in the prior art.
A processing and manufacturing method of a PC drinking water tank comprises the following steps:
preparing a PC ionic material;
adding a polytetrafluoroethylene material into the PC ionic material;
preheating the PC ions and the polytetrafluoroethylene material;
heating the preheated PC ions and the polytetrafluoroethylene material to obtain injection molding liquid;
injecting the injection molding liquid into a mold to form a bottle blank;
the bottle embryo is covered with LCP film;
and carrying out stretch molding on the bottle blank.
Preferably, the method for manufacturing the bottle embryo adopts a centrifugal blow molding method.
Preferably, the centrifugal blow molding method comprises the steps of:
adding the obtained injection molding liquid into a mold through centrifugal force;
driving the mould to rotate around a central shaft for 25-35min at 2000-3000 r/min;
the rotation is stopped when the temperature is heated to 280-300 ℃.
Preferably, the LCP film is 2-4mm in thickness.
Preferably, the preheating comprises the steps of: the preheating temperature of the PC ions and the polytetrafluoroethylene material is 80-100 ℃, and the time is 0.5-1 h.
Preferably, the injection molding time is 50-70 seconds and the temperature is 270-290 ℃.
Preferably, the temperature of the bottle blank during plastic drawing is 100-150 ℃.
Preferably, the method further comprises cooling, wherein the cooling is carried out continuously by reducing the temperature, and the cooling time is 0.3-0.4 hours.
Preferably, the method further comprises inspecting the cooled molded article for quality and safety, the inspecting method comprising air blowing, and the completed molded article is subjected to pressurized cyclic air inflation, and the air pressure is injected into the molded article for 5-15 minutes, and repeated 3-5 times.
Preferably, the air pressure is 15-20 Kpa.
Compared with the prior art, the invention has the following beneficial effects: according to the manufacturing method of the drinking water tank, the hardness of the bottle blank is improved by adding the polytetrafluoroethylene material into the PC ions, and the bottle blank is coated with the LCP film, so that the drinking water tank has toughness while the quality is ensured to be hard, the drinking water tank is prevented from being easily broken when in collision, and the hardness and the toughness of the drinking water tank are improved; the preheating and drying are carried out by using low temperature, the reliability is high, the forming speed is high, and the cooling is uniform by adopting the cooling pipe for cooling; uneven cooling can not be caused, and the quality of the product is greatly improved; the invention can improve the uniformity of bottle blanks by a centrifugal blow molding method, and further improve the quality of products; according to the invention, the production efficiency is improved, the manpower is saved, the production process is reduced and the product quality is improved by drying PC ions, centrifugally blow-molding into bottle blanks and heating and stretching.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Example 1: a processing and manufacturing method of a PC drinking water tank comprises the following steps:
firstly, preparing a PC ionic material;
secondly, adding a polytetrafluoroethylene material into the PC ionic material, and stirring and mixing the materials, wherein the purpose of stirring and mixing the materials is to uniformly mix the materials during subsequent heating;
thirdly, preheating the PC ions and the polytetrafluoroethylene material, wherein the purpose of preheating is to dry the PC ions and the polytetrafluoroethylene material; the preheating temperature of the PC ions and the polytetrafluoroethylene material is 80 ℃, and the time is 0.5 h;
fourthly, heating the preheated PC ions and the polytetrafluoroethylene material to obtain injection molding liquid; the injection molding time is 50 seconds, and the temperature is 270 ℃; ensuring that PC ions can be subjected to injection molding at the temperature;
fifthly, injecting the injection molding liquid into a bottle blank in a mold by adopting a centrifugal blow molding method; adding the obtained injection molding liquid into a mold through centrifugal force; driving the mould to rotate around a central shaft for 25min at a rotating speed of 2000 r/min; stopping rotation when the temperature is heated to 280 ℃;
sixthly, covering a layer of LCP film with the thickness of 2mm on the bottle blank to improve the hardness and toughness of the drinking water tank;
seventhly, performing plastic drawing on the bottle blank, wherein the temperature of the bottle blank during plastic drawing is 100 ℃; the bottle blank is prevented from being damaged when the temperature is low during plastic drawing;
eighthly, cooling, namely continuously cooling by adopting a reduced temperature, wherein the cooling time is 0.3 hour;
and ninthly, checking, namely performing quality and safety check on the cooled molded product, wherein the checking method comprises a blowing method, performing pressurization and circulating inflation on the finished molded product, and flushing air pressure into the molded product for 5 minutes for 3 times, wherein the air pressure is 15 Kpa.
Example 2: a processing and manufacturing method of a PC drinking water tank comprises the following steps:
firstly, preparing a PC ionic material;
secondly, adding a polytetrafluoroethylene material into the PC ionic material, and stirring and mixing the materials, wherein the purpose of stirring and mixing the materials is to uniformly mix the materials during subsequent heating;
thirdly, preheating the PC ions and the polytetrafluoroethylene material, wherein the purpose of preheating is to dry the PC ions and the polytetrafluoroethylene material; the preheating temperature of the PC ions and the polytetrafluoroethylene material is 90 ℃, and the time is 0.75 h;
fourthly, heating the preheated PC ions and the polytetrafluoroethylene material to obtain injection molding liquid; the injection molding time is 60 seconds, and the temperature is 280 ℃; ensuring that PC ions can be subjected to injection molding at the temperature;
fifthly, injecting the injection molding liquid into a bottle blank in a mold by adopting a centrifugal blow molding method; adding the obtained injection molding liquid into a mold through centrifugal force; driving the mould to rotate around a central shaft for 30min at the rotating speed of 2500 r/min; when the temperature is heated to 290 ℃, the rotation is stopped;
sixthly, covering a layer of LCP film with the thickness of 3mm on the bottle blank to improve the hardness and toughness of the drinking water tank;
seventhly, performing plastic drawing on the bottle blank, wherein the temperature of the bottle blank during plastic drawing is 120 ℃; the bottle blank is prevented from being damaged when the temperature is low during plastic drawing;
eighthly, cooling, namely continuously cooling by adopting a reduced temperature, wherein the cooling time is 0.35 hour;
and ninthly, checking, namely performing quality and safety check on the cooled molded product, wherein the checking method comprises a blowing method, performing pressurization and circulating inflation on the finished molded product, and flushing air pressure into the molded product for 10 minutes for 4 times, wherein the air pressure is 17 Kpa.
Example 3: a processing and manufacturing method of a PC drinking water tank comprises the following steps:
firstly, preparing a PC ionic material;
secondly, adding a polytetrafluoroethylene material into the PC ionic material, and stirring and mixing the materials, wherein the purpose of stirring and mixing the materials is to uniformly mix the materials during subsequent heating;
thirdly, preheating the PC ions and the polytetrafluoroethylene material, wherein the purpose of preheating is to dry the PC ions and the polytetrafluoroethylene material; the preheating temperature of the PC ions and the polytetrafluoroethylene material is 100 ℃, and the time is 1 h;
fourthly, heating the preheated PC ions and the polytetrafluoroethylene material to obtain injection molding liquid; the injection molding time is 70 seconds, and the temperature is 290 ℃; ensuring that PC ions can be subjected to injection molding at the temperature;
fifthly, injecting the injection molding liquid into a bottle blank in a mold by adopting a centrifugal blow molding method; adding the obtained injection molding liquid into a mold through centrifugal force; driving the mould to rotate around a central shaft for 25min at a rotating speed of 3000 r/min; stopping rotation when the temperature is heated to 300 ℃;
sixthly, covering a layer of LCP film with the thickness of 4mm on the bottle blank to improve the hardness and toughness of the drinking water tank;
seventhly, performing plastic drawing on the bottle blank, wherein the temperature of the bottle blank during plastic drawing is 150 ℃; the bottle blank is prevented from being damaged when the temperature is low during plastic drawing;
eighthly, cooling, namely continuously cooling by adopting a reduced temperature, wherein the cooling time is 0.4 hour;
and ninthly, checking, namely performing quality and safety check on the cooled molded product, wherein the checking method comprises a blowing method, performing pressurization and circulating inflation on the finished molded product, and flushing air pressure into the molded product for 15 minutes for 5 times, wherein the air pressure is 20 Kpa.
According to the manufacturing method of the drinking water tank, the hardness of the bottle blank is improved by adding the polytetrafluoroethylene material into the PC ions, and the bottle blank is coated with the LCP film, so that the drinking water tank has toughness while the quality is ensured to be hard, the drinking water tank is prevented from being easily broken when being collided, and the hardness and the toughness of the drinking water tank are improved; the preheating and drying are carried out by using low temperature, the reliability is high, the forming speed is high, and the cooling is uniform by adopting the cooling pipe for cooling; uneven cooling can not be caused, and the quality of the product is greatly improved; the invention can improve the uniformity of bottle blanks by a centrifugal blow molding method, and further improve the quality of products; according to the invention, the production efficiency is improved, the manpower is saved, the production process is reduced and the product quality is improved by drying PC ions, centrifugally blow-molding into bottle blanks and heating and stretching.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A PC drinking water tank processing and manufacturing method is characterized by comprising the following steps:
preparing a PC ionic material;
adding a polytetrafluoroethylene material into the PC ionic material;
preheating the PC ions and the polytetrafluoroethylene material;
heating the preheated PC ions and the polytetrafluoroethylene material to obtain injection molding liquid;
injecting the injection molding liquid into a mold to form a bottle blank;
the bottle embryo is covered with LCP film;
and carrying out stretch molding on the bottle blank.
2. The method for manufacturing a PC drinking water tank as claimed in claim 1, wherein the bottle blank is manufactured by centrifugal blow molding.
3. The method of manufacturing a PC drinking water tank of claim 2, wherein the centrifugal blow molding method comprises the steps of:
adding the obtained injection molding liquid into a mold through centrifugal force;
driving the mould to rotate around a central shaft for 25-35min at 2000-3000 r/min;
the rotation is stopped when the temperature is heated to 280-300 ℃.
4. The method for producing and processing the drinking water tank as claimed in claim 1, wherein the LCP film is 2-4mm in thickness.
5. The method for producing and processing the drinking water tank of claim 1, wherein the preheating comprises the following steps: the preheating temperature of the PC ions and the polytetrafluoroethylene material is 80-100 ℃, and the time is 0.5-1 h.
6. The method for producing and processing the drinking water tank as claimed in claim 1, characterized in that the injection molding time is 50-70 seconds and the temperature is 270-290 ℃.
7. The method for producing and processing the drinking water tank as claimed in claim 1, wherein the temperature of the bottle blank during plastic drawing is 100-150 ℃.
8. The method for producing and processing drinking water tanks as claimed in claim 1, characterized in that the method also includes cooling, which is carried out continuously by lowering the temperature, and the cooling time is 0.3-0.4 hours.
9. The method of claim 1, further comprising quality and safety testing the cooled molded product, the method comprising air blowing, and the step of inflating the finished molded product by pressure cycle, wherein the air pressure is flushed into the molded product for 5-15 minutes, and repeating the steps 3-5 times.
10. The method of claim 9, wherein the air pressure is 15-20 Kpa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911256657.3A CN110920028A (en) | 2019-12-10 | 2019-12-10 | Processing and manufacturing method of PC drinking water tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911256657.3A CN110920028A (en) | 2019-12-10 | 2019-12-10 | Processing and manufacturing method of PC drinking water tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110920028A true CN110920028A (en) | 2020-03-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911256657.3A Pending CN110920028A (en) | 2019-12-10 | 2019-12-10 | Processing and manufacturing method of PC drinking water tank |
Country Status (1)
| Country | Link |
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| CN (1) | CN110920028A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1123219A (en) * | 1994-09-26 | 1996-05-29 | 株式会社青木固研究所 | Method of molding large containers by the process of stretch blow molding |
| CN1198125A (en) * | 1996-07-31 | 1998-11-04 | 株式会社青木固研究所 | Method of injection drawing and blow molding hollow products |
| CN1656143A (en) * | 2002-03-25 | 2005-08-17 | 拜尔材料科学股份公司 | Polycarbonates having high elongational viscosity |
| WO2006111488A1 (en) * | 2005-04-19 | 2006-10-26 | Mht Mold & Hotrunner Technology Ag | Multi-layered pre-form, method for the production thereof, and multi-layered hollow body |
| CN201484938U (en) * | 2009-09-17 | 2010-05-26 | 上海上磁塑料容器有限公司 | Enhancement type polycarbonate drinking water tank |
-
2019
- 2019-12-10 CN CN201911256657.3A patent/CN110920028A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1123219A (en) * | 1994-09-26 | 1996-05-29 | 株式会社青木固研究所 | Method of molding large containers by the process of stretch blow molding |
| CN1198125A (en) * | 1996-07-31 | 1998-11-04 | 株式会社青木固研究所 | Method of injection drawing and blow molding hollow products |
| CN1656143A (en) * | 2002-03-25 | 2005-08-17 | 拜尔材料科学股份公司 | Polycarbonates having high elongational viscosity |
| WO2006111488A1 (en) * | 2005-04-19 | 2006-10-26 | Mht Mold & Hotrunner Technology Ag | Multi-layered pre-form, method for the production thereof, and multi-layered hollow body |
| CN201484938U (en) * | 2009-09-17 | 2010-05-26 | 上海上磁塑料容器有限公司 | Enhancement type polycarbonate drinking water tank |
Non-Patent Citations (3)
| Title |
|---|
| 张其锦: "《聚合物液晶导论》", 31 August 2018, 中国科学技术大学出版社 * |
| 王澜: "《高分子材料》", 31 January 2009, 中国轻工业出版社 * |
| 颜银标: "《工程材料及热成型工艺》", 31 May 2014, 化学工业出版社 * |
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Application publication date: 20200327 |
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