CN1539624A - Method for fabricating fire resistant bottle made from polyester and product - Google Patents

Method for fabricating fire resistant bottle made from polyester and product Download PDF

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Publication number
CN1539624A
CN1539624A CNA031143458A CN03114345A CN1539624A CN 1539624 A CN1539624 A CN 1539624A CN A031143458 A CNA031143458 A CN A031143458A CN 03114345 A CN03114345 A CN 03114345A CN 1539624 A CN1539624 A CN 1539624A
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CN
China
Prior art keywords
bottle
manufacture method
high temperature
temperature resistance
resistance polyester
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.)
Granted
Application number
CNA031143458A
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Chinese (zh)
Other versions
CN1286631C (en
Inventor
袁金火
黄海咏
陈景湖
唐卫民
林平岗
黄胜兴
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Individual
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Individual
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Publication date
Application filed by Individual filed Critical Individual
Priority to CN03114345.8A priority Critical patent/CN1286631C/en
Priority to PCT/CN2004/000389 priority patent/WO2004096525A1/en
Publication of CN1539624A publication Critical patent/CN1539624A/en
Application granted granted Critical
Publication of CN1286631C publication Critical patent/CN1286631C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/64—Heating or cooling preforms, parisons or blown articles
    • B29C49/66—Cooling by refrigerant introduced into the blown article
    • 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
    • B29C49/64—Heating or cooling preforms, parisons or blown articles
    • 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
    • B29C49/783—Measuring, controlling or regulating blowing pressure
    • B29C2049/7831—Measuring, controlling or regulating blowing pressure characterised by pressure values or ranges
    • 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
    • B29C49/783—Measuring, controlling or regulating blowing pressure
    • B29C2049/7832—Blowing with two or more pressure levels
    • 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
    • B29C2049/7864—Temperature of the mould
    • B29C2049/78645—Temperature of the mould characterised by temperature values or ranges
    • 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
    • B29C2049/7866—Temperature of the blowing medium
    • 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
    • B29C49/64—Heating or cooling preforms, parisons or blown articles
    • B29C49/6604—Thermal conditioning of the blown article
    • B29C49/6605—Heating the article, e.g. for hot fill

Abstract

A process for preparing the refractory polyester bottle includes making a raw bottle, heating, putting it in mould, bidirectional drawing, blowing hot air at 160-240 deg.C in the cavity of bottle for 0.5-5 seconds, blowing cold air lower than 100 deg.C to cool it to 100 deg.C, and demoulding. Its advantages are high refractory performance (115 deg.C) and high productivity.

Description

Manufacture method of high temperature resistance polyester bottle and products thereof
Technical field
The present invention relates to a kind of plastic shaping processing method and products thereof, particularly manufacture method of biaxial stretching polyester bottle and products thereof.
Background technology
The polyester bottles that bidirectional extending method blowing hot filling is used is to be raw material with PET, PEN or its blend, be injection molded into bottle base by injection machine, bottle base is put into mould and is carried out biaxial tension blowing after thermoplastic, the bottle after the blow molding is remained on carry out thermal crystalline in the heated mold again.
In the existing method, it is with mold heated to 130～160 ℃ that bottle is carried out thermal crystalline, and bottle is adjacent to mould and heats up and obtain certain degree of crystallinity.There is such defective in this method: use to be higher than 130 ℃ mould, can make some lower-molecular substance and analyte separate out and adhere to mould, mould needs often to clean, when the mould temperature reaches 150～160 ℃, every 2～3 hours needs cleaning dies once.Higher mould temperature will make the heat of bottle be difficult to be pulled away, and be difficult to avoid bottle deforms after the die sinking, so Gao Mowen generally can only about 160 ℃, the bottle hear resistance of blowing out is generally the highest can only to reach 96 ℃.
Summary of the invention
The objective of the invention is to overcome above-mentioned defective, a kind of polyester bottles production method of high-crystallinity is provided, utilize this method can make the hear resistance of polyester bottles bring up to 115 ℃.
The inventive method is to make bottle base, heating bottle blank, biaxial tension bottle base in mould earlier, bottle after the biaxial tension is remained in the mould, be blown into 160～240 ℃ hot gas heating after 0.5～5 second toward the bottle inner chamber, be blown into and be lower than 100 ℃ of cold air, bottle was got in die sinking when bottle was cooled to below 100 ℃.
In this method, mould is suitably heating preferably, and to reduce the thermograde between bottle and the mould, mold temperature preferably keeps 60～100 ℃, preferably 80～90 ℃.
The hot air temperature that is blown into the bottle inner chamber preferably is no more than 243～260 ℃ of the fusing points of the used polyester material of bottle base, be convenient to the operation and the control of production process, the fusing point that is preferably lower than used polyester material is below 20 ℃, adopt the lower hot gas of temperature, heat time heating time should be long slightly, for helping production efficiency, hot air temperature is preferably 170～230 ℃, is more preferably 200～220 ℃.
Among the present invention, hot gas can adopt the compressed air or the inert gas of heating.
Hot gas should maintain the pressure of 0.5～4.0Mpa, better is 2.5～3.0Mpa.Preferably 1～3 second heat time heating time of hot gas.
In this method, the cold air of cooling usefulness can use the compressed air of normal temperature or refrigeration.Feeding the cold air temperature-fall period to bottle, the bottle temperature was reduced to before 100 ℃, and cold air pressure preferably keeps 2.5～3.0Mpa, in order to avoid the bottle contraction distortion.
The material that this method is suitable for can be the equal PETG of bottle blowing level, or terephthalic acid (TPA), M-phthalic acid and glycol copolymer, or adds PET, PEN material or its blend of modified additive.
The bottle base that this method is used can be the mono-layer tube of single-layer resin layer injection mo(u)lding, also can be the multi-layer resinous layer multilayer pipe of injection mo(u)lding altogether.
Among the present invention, before bottle base is carried out stretch-blow, preferably earlier thermal crystalline is made at the bottleneck position and handled, in order to avoid deform blowing the hot gas process.The bottleneck position that should make crystallization treatment comprise screw thread mouth, stressed ring and following 3～6 millimeters in the bottle blowing process size do not have the part that changes, its degree of crystallinity preferably reaches 50～52%.
The present invention compares with existing forming method, has following advantage:
1. this method makes the intensification of being heated of bottle inwall, reaches required degree of crystallinity fast, and the polyester bottles of production has higher hear resistance, and the hot filling temperature can reach 115 ℃, and has the better gas barrier; When adopting equal PETG, maximum heat resistance can reach 120 ℃, thereby has opened up the new application of polyester bottles, as milk bottle, boiling bottle etc.
2. mold temperature is low, mold sticking do not occur; The bottle cooling rate is fast, thereby has improved production efficiency, reduces production costs.
3. bottle crystallization constancy is good, and bottle can be placed the hear resistance when keeping moulding for more time;
When required hear resistance be below 90 ℃ the time, the weight of bottle can significantly reduce, as with existing method, the weight of 500ml bottle is no less than 32 grams, and use this method, weight can be reduced to 26 and restrain.
The specific embodiment
The form of listing later is technological parameter and the corresponding physical and chemical parameter that makes polyester bottles of using the embodiment of the inventive method blowing polyester bottles.
Among the embodiment, blowing method can be summarized as: injection mo(u)lding bottle base-bottleneck thermal crystalline processing-infrared ray heating bottle blank-biaxial tension bottle base (pre-blowing)-blow hot gas thermal crystalline bottle-cold air cooling-die sinking, finish a bottle blowing cycle.
Before the biaxial tension bottle base, bottleneck and about 4 millimeters part below the stressed ring are carried out thermal crystalline.
Mould remains on about 85 ℃.The intensification of may absorbing heat of process mould needs suitably cooling.
Bottle base through infrared ray heating deliquescing carries out pre-blowing earlier: bottle base is put into mould, begin the longitudinal stretching bottle base by mechanical system after, feed pre-air blowing cross directional stretch.About 80 ℃ of pre-temperature of blowing, the about 1.0Mpa of pressure.
Among the embodiment, bottle base is a cylindrical shape, and weight 32 grams become the round vase that capacity is 500ml after the blowing.During stretching, size did not change when the following about 4 millimeters part of bottleneck and stressed ring stretched.The about part that is stretched below 4 millimeters in bottleneck below, its diameter draw ratio is 2.4 times, the high elongation ratio is 2.3 times.
Behind the pre-blowing, feed the compressed air of heating to the bottle inner chamber, about pressure 3.0Mpa, temperature and blow the hot gas time as shown in Table.When blowing hot gas, make hot gas be in flow regime, help heat exchange with the pressure limiting valve venting.
After blowing hot gas, feed normal temperature compressed air to the bottle inner chamber, pressure and makes compressed air be in flow regime about 3.0Mpa.Cool off after 2 seconds, the bottle temperature generally can drop to below 100 ℃, at this moment can open mould, takes off the bottle of moulding.
This method is produced after 5 days continuously, and mould still keeps clean, and mold sticking do not occur.
The paraffin oil of listed temperature is measured its volume-diminished situation then in the bottle filling table that each technological parameter is made.Can see that from table the shrinkage factor of bottle is less than the level of standard instructions for use 3% during 115 ℃ of following hot fillings, therefore, the polyester bottles that is made by this method is applicable to the hot filling under 115 ℃.
Hot air temperature (℃) Blow hot gas pressure (MPa) Blow the hot gas time (second) The blast-cold gas time (second) 100 ℃ of shrinkage factors (%) 105 ℃ of shrinkage factors (%) 110 ℃ of shrinkage factors (%) 115 ℃ of shrinkage factors (%)
????180 ????3.0 ????1.5 ????2 ????2.01 ????2.20 ????2.30 ????2.60
????180 ????3.0 ????2.5 ????2 ????1.97 ????2.12 ????2.20 ????2.40
????220 ????3.0 ????1.5 ????2 ????1.92 ????2.10 ????2.18 ????2.22
????220 ????3.0 ????2.5 ????2 ????1.90 ????2.08 ????2.15 ????2.20
????230 ????3.0 ????1.0 ????2 ????1.88 ????1.98 ????2.12 ????2.18
????230 ????3.0 ????1.5 ????2 ????1.85 ????1.90 ????2.08 ????2.14

Claims (10)

1. the manufacture method of a high temperature resistance polyester bottle, make bottle base earlier, heating bottle blank, biaxial tension bottle base in mould, it is characterized in that, the bottle after the biaxial tension is remained in the mould, be blown into 160～240 ℃ hot gas heating after 0.5～5 second toward the bottle inner chamber, be blown into and be lower than 100 ℃ of cold air, bottle was got in die sinking when bottle was cooled to below 100 ℃.
2. according to the manufacture method of the described high temperature resistance polyester bottle of claim 1, it is characterized in that described mould mould temperature keeps 60～100 ℃.
3. according to the manufacture method of the described high temperature resistance polyester bottle of claim 1, it is characterized in that described hot air temperature is 170～230 ℃.
4. according to the manufacture method of the described high temperature resistance polyester bottle of claim 3, it is characterized in that described hot air temperature is 200～230 ℃.
5. according to the manufacture method of the described high temperature resistance polyester bottle of claim 1, it is characterized in that 1～3 second heat time heating time of described hot gas.
6. according to the manufacture method of the described high temperature resistance polyester bottle of claim 1, it is characterized in that described hot gas maintains the pressure of 0.5～4.0Mpa at the bottle inner chamber.
7. according to the manufacture method of the described high temperature resistance polyester bottle of claim 6, it is characterized in that described hot gas maintains the pressure of 2.5～3.0Mpa at the bottle inner chamber.
8. according to the manufacture method of the described high temperature resistance polyester bottle of claim 1, it is characterized in that, reduced to before 100 ℃ that cold air pressure keeps 2.5～3.0Mpa in the bottle temperature.
9. according to the manufacture method of the described high temperature resistance polyester bottle of claim 1, it is characterized in that described cold air is normal temperature air or cooling air.
10. the polyester bottles that makes according to the manufacture method of the described high temperature resistance polyester bottle of claim 1.
CN03114345.8A 2003-04-25 2003-04-25 Method for fabricating fire resistant bottle made from polyester and product Expired - Fee Related CN1286631C (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN03114345.8A CN1286631C (en) 2003-04-25 2003-04-25 Method for fabricating fire resistant bottle made from polyester and product
PCT/CN2004/000389 WO2004096525A1 (en) 2003-04-25 2004-04-23 Method of manufacturing heat-resisting polyester bottles and the products therefrom

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN03114345.8A CN1286631C (en) 2003-04-25 2003-04-25 Method for fabricating fire resistant bottle made from polyester and product

Publications (2)

Publication Number Publication Date
CN1539624A true CN1539624A (en) 2004-10-27
CN1286631C CN1286631C (en) 2006-11-29

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CN03114345.8A Expired - Fee Related CN1286631C (en) 2003-04-25 2003-04-25 Method for fabricating fire resistant bottle made from polyester and product

Country Status (2)

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CN (1) CN1286631C (en)
WO (1) WO2004096525A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101961913A (en) * 2009-07-23 2011-02-02 乌鲁木齐华佳成医药包装有限公司 Process for blowing polypropylene infusion bottle under low air pressure
CN101508171B (en) * 2009-03-31 2013-12-25 湖南千山制药机械股份有限公司 Method for reducing deformation of large transfusion PP bottle in follow-up high temperature sterilization process
CN107953539A (en) * 2017-11-01 2018-04-24 中山市邦信电子科技发展有限公司 A kind of full-automatic blowing molding machine and its intake method

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITBO20060499A1 (en) * 2006-06-29 2007-12-30 Techne Technipack Engineering PROCEDURE AND APPARATUS TO DECREASE THE CYCLE TIMES IN MACHINES FOR THE PRODUCTION OF THERMOPLASTIC MANUFACTURED ARTICLES WITH THE BLOWING THERMOFORMING PROCESS
CN114467897A (en) * 2021-10-12 2022-05-13 苏州瑞亨塑胶制品有限公司 Method for processing and manufacturing transparent electric heating mosquito-repellent incense liquid bottle body
CN114919154A (en) * 2022-06-01 2022-08-19 苏州瑞亨塑胶制品有限公司 Processing and forming process of electric heating mosquito-repellent incense liquid bottle body

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SE7411960L (en) * 1974-09-24 1976-03-25 Fabriker As Haustrups METHOD OF MANUFACTURING CONTAINERS LIKE POLYESTER BOTTLES OR CANS
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JPS63280615A (en) * 1987-05-13 1988-11-17 Tokan Kogyo Co Ltd Manufacture of synthetic resin container
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JPH01310933A (en) * 1988-06-08 1989-12-15 Tokan Kogyo Co Ltd Preparation of container made of synthetic resin
US6004638A (en) * 1995-03-09 1999-12-21 Mitsui Chemicals, Inc. Bottle from polyester composition and process for producing the same
CN1223196A (en) * 1997-11-14 1999-07-21 厦门市立精实业有限公司 Method for forming polyethylene glycol terephthalate (PET) thermal-resistant bottle
CN1434762A (en) * 2000-02-25 2003-08-06 钱德拉·利曼贾亚 Hot fil container

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101508171B (en) * 2009-03-31 2013-12-25 湖南千山制药机械股份有限公司 Method for reducing deformation of large transfusion PP bottle in follow-up high temperature sterilization process
CN101961913A (en) * 2009-07-23 2011-02-02 乌鲁木齐华佳成医药包装有限公司 Process for blowing polypropylene infusion bottle under low air pressure
CN107953539A (en) * 2017-11-01 2018-04-24 中山市邦信电子科技发展有限公司 A kind of full-automatic blowing molding machine and its intake method

Also Published As

Publication number Publication date
WO2004096525A1 (en) 2004-11-11
CN1286631C (en) 2006-11-29

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