CN103831966A - Method for manufacturing heat-resistance polylactic acid water bottle - Google Patents
Method for manufacturing heat-resistance polylactic acid water bottle Download PDFInfo
- Publication number
- CN103831966A CN103831966A CN201410085253.3A CN201410085253A CN103831966A CN 103831966 A CN103831966 A CN 103831966A CN 201410085253 A CN201410085253 A CN 201410085253A CN 103831966 A CN103831966 A CN 103831966A
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- polylactic acid
- bottle
- water bottle
- heat
- mould
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- 229920000747 poly(lactic acid) Polymers 0.000 title claims abstract description 55
- 239000004626 polylactic acid Substances 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims abstract description 41
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 33
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- 238000010438 heat treatment Methods 0.000 claims abstract description 24
- 238000000465 moulding Methods 0.000 claims abstract description 14
- 238000002347 injection Methods 0.000 claims abstract description 12
- 239000007924 injection Substances 0.000 claims abstract description 12
- 238000012545 processing Methods 0.000 claims abstract description 12
- 238000000071 blow moulding Methods 0.000 claims abstract description 11
- 238000001746 injection moulding Methods 0.000 claims abstract description 11
- 239000002245 particle Substances 0.000 claims abstract description 11
- 239000002994 raw material Substances 0.000 claims abstract description 5
- 210000001161 mammalian embryo Anatomy 0.000 claims description 27
- 230000014759 maintenance of location Effects 0.000 claims description 6
- 238000005469 granulation Methods 0.000 claims description 3
- 230000003179 granulation Effects 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims description 2
- 238000011534 incubation Methods 0.000 claims description 2
- 230000008569 process Effects 0.000 abstract description 10
- 238000007664 blowing Methods 0.000 abstract description 8
- 238000002425 crystallisation Methods 0.000 abstract description 7
- 230000008025 crystallization Effects 0.000 abstract description 7
- 239000002667 nucleating agent Substances 0.000 abstract description 3
- 238000002844 melting Methods 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
- 239000002861 polymer material Substances 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 229920003023 plastic Polymers 0.000 description 6
- 239000004033 plastic Substances 0.000 description 6
- 239000000835 fiber Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 208000034530 PLAA-associated neurodevelopmental disease Diseases 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000005453 pelletization Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000001954 sterilising effect Effects 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 235000019890 Amylum Nutrition 0.000 description 1
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 239000005030 aluminium foil Substances 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- -1 container Substances 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 229940042795 hydrazides for tuberculosis treatment Drugs 0.000 description 1
- 150000002466 imines Chemical class 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 239000004310 lactic acid Substances 0.000 description 1
- 235000014655 lactic acid Nutrition 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000004017 vitrification Methods 0.000 description 1
Classifications
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- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/911—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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/04—Particle-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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/91—Heating, e.g. for cross linking
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/9258—Velocity
- B29C2948/9259—Angular velocity
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92904—Die; Nozzle zone
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Biological Depolymerization Polymers (AREA)
Abstract
The invention relates to a method for manufacturing a heat-resistance polylactic acid water bottle, and belongs to the field of polymer materials and processing application thereof. The method comprises the following steps: melting, extruding and granulating polylactic acid and a nucleating agent in a certain ratio by a twin-screw extruder, performing injection molding on the polylactic acid particles by injection equipment to form a bottle preform; heating and insulating the mouth part of the bottle preform in the die before the bottle preform is demolded to sufficiently crystalize. Therefore, the bottle preform is subjected to blow molding by blow molding equipment, the mouth and body parts of the bottle preform can be heated and insulated in the die before demolding, so that the bottle preform can be crystallized sufficiently, and the heat-resistance polylactic acid water bottle can be prepared finally. According to the method, the crystallization efficiency of the polylactic acid can be improved by virtue of the nucleating agent, and dies of injection and blowing two-step molding equipment can be improved, so that the bottle preform can be sufficiently crystallized in the die directly after being molded, and the product is more stable in size. The method enriches the molding process of heat-resistance polylactic acid products, and further expands the application field of polylactic acid, which is an emerging biological environment-friendly raw material.
Description
Technical field
The present invention relates to a kind of plastics processing method, in particular, it relates to a kind of method of manufacturing heat-proof polylactic acid water bottle, the invention belongs to macromolecular material and processed and applied field thereof.
Background technology
PLA is a kind of family macromolecule material obtaining through chemical synthesis or biosynthesis take lactic acid as monomer, nontoxic nonirritant, there is the excellent transparency and biodegradability, easily by the enzyme catabolism in natural multiple-microorganism or animal and plant body, final formation carbon dioxide and water, thus environment is not impacted.Its raw material mostly is plant amylum, fiber, and recyclability is strong, does not rely on oil, has begun to take shape at present upstream and downstream industrial chain, realizes and continues benign development.PLA is considered to one of material being hopeful most petroleum replacing base conventional plastic, at packaging fields such as medicine, container, films, and the fiber art such as clothes, carpet, automobile ornament, and the moulding material aspect extensive use such as electronic apparatus shell.
PLA has good machinability, adapts to injection moulding, blowing, plastic uptake, the various moulding process such as extrudes.But because its crystalline rate is very slow and degree of crystallinity is lower, while making PLA processing and forming, the cycle is long, dimensional stability is poor.The vitrification point (Tg) of typical case's PLA is at 50～80 ℃, the heat distortion temperature of the polylactic acid article that conventional machining method obtains is no more than 60 ℃, cannot meet the even transport temperature of normal use of a lot of products far away, therefore heat resistance is a large factor of restriction PLA application.
Improving the stable on heating major technique of PLA is to improve the crystal property of PLA, improves the degree of crystallinity of PLA.In addition, also have PLA and the blend of high glass transition temperature (Tg) macromolecular material, introduce cross-linked structure, the methods such as fiber reinforcement and nanometer composite technology.
Current heat-proof polylactic acid processing technology is mainly with being directly injected into master, adopt limited its heat resisting temperatures of raising of method such as adding nucleator and inorganic fill (talcum powder), the general wall thickness of its product is thicker, simple in structure, cannot meet the market demand becoming increasingly abundant.Meanwhile, the direct injecting products of this class, because dimension precision requirement is lower, adopts mould external heat, heat preserving method more, further improves its degree of crystallinity, thereby further improves the heat resisting temperature of goods.From technique, the way that improves the degree of crystallinity of heat-proof polylactic acid goods generally has two kinds of mould intercrystalline and the outer crystallizations of film.Mould intercrystalline refers to before the demoulding product of moulding is incubated, and makes its sufficient crystallising, and this method products obtained therefrom accuracy to size is good, not yielding, but production life cycle is longer; The outer crystallization of mould refers to after the finished product demoulding, by the further heating such as baking oven, drying tunnel stove, insulation, make its sufficient crystallising, this method injection moulding efficiency is high, but product size, shape easily change when secondary crystallization, be applicable to product less demanding to accuracy to size or that wall thickness is thicker.
Current PLA heat resistant product is mainly the water tumbler of injection moulding class, disposable knife-fork-spoon, disposable lunch-box etc., and the product of some spinning, film class also can be realized to a certain degree heat-resisting by the stretch orientation crystallization after heating.And heat-proof polylactic acid product is the coefficient result of polylactic acid modified formula, equipment and even technique, by finding patent retrieval in recent years and market survey, PLA Patents mainly concentrates on polymerizable raw material, modification strengthens field, and particularly aspect process improving, relate to less in the processing and forming in downstream.How by this kind of new material grafting of PLA to existing plastic processing Industry Foundation, and to enhance production capacities be current pressing issue.Especially, manufacture in the process of PLA water bottle adopting note to blow two step method, due to the particularly difference of crystal property of processing characteristics, and goods are to heat resistance demand, and the contour machining procedure of PLA and conventional plastic has obvious difference.
Summary of the invention
The object of the invention is in order to solve prior art limitation, mould improves equipment, improve the processing and forming technology of PLA water bottle, and adopt nucleator to improve the crystallization rate of PLA, a kind of manufacture method of blowing the effective heat-resisting water bottle of PLA of two step method based on tradition note has finally been proposed.
A kind of method of manufacturing heat-proof polylactic acid water bottle of the present invention, is characterized in that described method blows two step method moulding by note, specifically carries out according to following step: the PLA particle of a nucleator adding proportion between 0.5%～2% is provided; One water bottle bottle embryo injection-moulding device is provided, adopts the mould with heating function; One bottle of embryo blow moulding equipment is provided, adopts the mould with heating function; PLA particle, via described injection-moulding device injection mo(u)lding, is formed to bottle embryo, and before the demoulding, in mould, the bottleneck position to bottle embryo is heated, is incubated, and makes its sufficient crystallising, and in mould, temperature is 100～110 ℃, temperature retention time 1～10 minute; By this bottle of embryo, via described blow moulding equipment blow molding, in mould, the bottleneck to bottle embryo and body position are heated, be incubateds before the demoulding, make its sufficient crystallising, and the interior temperature of mould is 100～110 ℃, temperature retention time 1～10 minute;
The heating process of the bottleneck to bottle embryo in wherein said injection moulding process and blowing process can be present in production procedure simultaneously, or only carries out one of them heating, incubation step;
Wherein said nucleator is organic or inorganic nucleator, and described PLA particle melt extrudes granulation by nucleator and polylactic acid raw material by double screw extruder and makes, and extrusion temperature is 160～190 ℃;
Wherein said bottle embryo injection mold and blow mold can heat, be incubated,
In wherein said injection moulding process, after the injection mo(u)lding of bottle embryo, before the demoulding, its bottleneck portion is heated, is incubated processing, make its sufficient crystallising;
In wherein said blowing process, after the blow molding of water bottle, before the demoulding, its bottleneck and body part are heated, are incubated processing, make its sufficient crystallising;
Wherein said water bottle refers to adopt note to blow the water bottle of two step method moulding, also refers to adopt the flask of same method moulding, as feeding bottle etc.;
The heating means of wherein said mould are Resistant heating or the heating of deep fat runner;
The invention provides the new method of manufacturing heat-proof polylactic acid water bottle, based on the Equipment Foundations of conventional plastic industry, technological process is simple, and continuous production is good, and cost is low, can realize large-scale production.The heat-proof polylactic acid water bottle that the present invention manufactures, dimensional accuracy is high, and defect rate is low, good heat resistance, heat resisting temperature is at 90～110 ℃.
Compared with prior art, the present invention has the following advantages:
(1) the PLA particle of the prepared interpolation nucleator of the present invention, manufacturing process is simple, and extruding pelletization process can be added the inorganic fillers such as talcum powder, look mother etc. as required.
(2) the selected mould of the present invention is can heating mould, adopts resistance wire or the heating of deep fat runner, and when insulation, temperature control precision is high.
(3) the present invention fully blows feature and the work flow of two step method mould in conjunction with note, because bottleneck is that size is fixed after the injection mo(u)lding of bottle embryo, and bottle embryo body ability final molding in the time of blowing.We heat, are incubated the bottleneck position of bottle embryo while being chosen in bottle embryo injection mo(u)lding, make its sufficient crystallising, and in blowing process, the bottleneck to the water bottle after moulding and body position are heated, are incubated, and make its sufficient crystallising.Certainly according to needs of production, on the one hand for high as far as possible enhancing productivity, also agree with as far as possible actual mould structure on the one hand, in injection moulding and blowing process, can accept or reject to some extent the heating of bottleneck.
The present invention further expanded heat-proof polylactic acid product molding technology, the problem that has solved note and blow two step method and manufacture heat-proof polylactic acid water bottle, its processing technology of having gone forward side by side one-step optimization.
The specific embodiment
The preparation of the heat-resisting feeding bottle of embodiment 1 PLA
The preparation of PLA particle
PLA crystallization nucleating agent adopts commercially available TMP-3000 (many hydrazides imine compound, our company researches and develops voluntarily, the patent No.: 201210162112.8), addition is 1%, PLA adopts commercially available Natureworks company product, the trade mark is 4032D, add other as antioxidant, hydrolysis-resisting agent, after the solvent of lubricant etc., in double screw extruder, melt extrude granulation, each section of temperature of extruder is as shown in table 1, screw speed 200rpm, owing to adopting the air-cooled pelletizing that suspends, particle is not crossed water, thereby can be for subsequent use after adopting aluminium foil bag to encapsulate, without dry separately.
Table 1, each section of Temperature Distribution of extruder
| Subregion | One district | 2nd district | 3rd district | 4th district | 5th district | 6th district | Head |
| Temperature (℃) | 160 | 160 | 165 | 175 | 175 | 170 | 170 |
Adopt a bottle embryo injection machine that above-mentioned particle is prepared as to feeding bottle bottle embryo, injection temperature is 160～180 ℃, can heating mould before the demoulding of bottle embryo to bottle mouth position to heating, being incubated, holding temperature is 105 ℃, temperature retention time is 5 minutes.
Adopt bottle embryo blow moulding machine that above-mentioned bottle embryo is fabricated to finished product feeding bottle, can before the feeding bottle demoulding, body place be heated, is incubated by heating mould, holding temperature is 105 ℃, and temperature retention time is 5 minutes.
Product properties
Feeding bottle heat resistance: 108.5 ℃ of heat distortion temperatures, adopt boiling water sterilization or moise-heat sterilization to use without impact goods.
Finally it should be noted that: obviously, above-described embodiment is only for example of the present invention is clearly described, not the restriction to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here without also giving exhaustive to all embodiments.And the apparent variation of being amplified out thus or variation are still among protection scope of the present invention.
Claims (8)
1. manufacture a method for heat-proof polylactic acid water bottle, it is characterized in that described method blows two step method moulding by note, specifically carry out according to following step:
[a] provides the PLA particle of a nucleator adding proportion between 0.5%～2%;
[b] provides a water bottle bottle embryo injection-moulding device, adopts the mould with heating function; One bottle of embryo blow moulding equipment is provided, adopts the mould with heating function;
Particle in [c] step [a], via the injection-moulding device injection mo(u)lding in step [b], forms bottle embryo, and before the demoulding, in mould, the bottleneck position to bottle embryo is heated, is incubated, and makes its sufficient crystallising, and in mould, temperature is 100～110 ℃, temperature retention time 1～10 minute;
Bottle embryo in [d] step [c] is via the blow moulding equipment blow molding in step [b], and in mould, the bottleneck to bottle embryo and body position are heated, be incubateds before the demoulding, make its sufficient crystallising, and the interior temperature of mould is 100～110 ℃, temperature retention time 1～10 minute.
2. a kind of method of manufacturing heat-proof polylactic acid water bottle according to claim 1, the heating process that it is characterized in that the bottleneck to bottle embryo in this step [c] and step [d] can be present in production procedure simultaneously, or only carries out one of them heating, incubation step.
3. a kind of method of manufacturing heat-proof polylactic acid water bottle according to claim 1, it is characterized in that nucleator used in this step [a] is organic or inorganic nucleator, nucleator and polylactic acid raw material melt extrude granulation by double screw extruder and make required particle, and extrusion temperature is 160～190 ℃.
4. a kind of method of manufacturing heat-proof polylactic acid water bottle according to claim 1, is characterized in that bottle embryo injection mold and blow mold used in this step [b] can heat, be incubated.
5. a kind of method of manufacturing heat-proof polylactic acid water bottle according to claim 1, is characterized in that in this step [c], after the injection mo(u)lding of bottle embryo, before the demoulding, processing is heated, is incubated at its bottleneck position, makes its sufficient crystallising.
6. a kind of method of manufacturing heat-proof polylactic acid water bottle according to claim 1, is characterized in that in this step [d], after the blow molding of water bottle, before the demoulding, its bottleneck and body position is heated, is incubated processing, makes its sufficient crystallising.
7. a kind of method of manufacturing heat-proof polylactic acid water bottle according to claim 1, described water bottle refers to adopt note to blow the water bottle of two step method moulding, also comprises the flask that adopts same method moulding, as feeding bottle etc.
8. a kind of method of manufacturing heat-proof polylactic acid water bottle according to claim 3, the heating means that it is characterized in that this mould are Resistant heating or the heating of deep fat runner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410085253.3A CN103831966B (en) | 2014-03-07 | 2014-03-07 | A kind of method of manufacture heat-proof polylactic acid water bottle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410085253.3A CN103831966B (en) | 2014-03-07 | 2014-03-07 | A kind of method of manufacture heat-proof polylactic acid water bottle |
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| CN103831966B CN103831966B (en) | 2017-03-29 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104943132A (en) * | 2015-06-17 | 2015-09-30 | 湖南宝升塑业科技开发有限公司 | Production method of composite nano-silver antibacterial feeding bottle |
| CN105153659A (en) * | 2015-10-16 | 2015-12-16 | 深圳市绿意包装有限公司 | Heat resistant polylactic acid composite material and preparation method thereof |
| CN106751610A (en) * | 2016-12-08 | 2017-05-31 | 吉林中粮生化有限公司 | A kind of PLA porcelain imitation material and preparation method thereof |
| CN112721247A (en) * | 2020-12-29 | 2021-04-30 | 安徽恒鑫环保新材料有限公司 | Polylactic acid suction pipe air temperature crystallization process |
| CN113752525A (en) * | 2020-06-02 | 2021-12-07 | 宜世家投资有限公司 | Method for forming crystalline plastic |
| CN114854079A (en) * | 2022-06-20 | 2022-08-05 | 台州玉米环保科技有限公司 | Preparation method of temperature-resistant PLA plastic-absorbing tableware |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH11188779A (en) * | 1997-12-26 | 1999-07-13 | Aokiko Kenkyusho:Kk | Injection stretch blow molding method |
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| CN113752525A (en) * | 2020-06-02 | 2021-12-07 | 宜世家投资有限公司 | Method for forming crystalline plastic |
| CN112721247A (en) * | 2020-12-29 | 2021-04-30 | 安徽恒鑫环保新材料有限公司 | Polylactic acid suction pipe air temperature crystallization process |
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