CN103831966B - A kind of method of manufacture heat-proof polylactic acid water bottle - Google Patents

A kind of method of manufacture heat-proof polylactic acid water bottle Download PDF

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Publication number
CN103831966B
CN103831966B CN201410085253.3A CN201410085253A CN103831966B CN 103831966 B CN103831966 B CN 103831966B CN 201410085253 A CN201410085253 A CN 201410085253A CN 103831966 B CN103831966 B CN 103831966B
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China
Prior art keywords
polylactic acid
bottle
mould
embryo
heat
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CN201410085253.3A
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Chinese (zh)
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CN103831966A (en
Inventor
马学所
周庭震
吴群英
泮伟青
刘艳玲
马军强
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HANGZHOU SEEMORE NEW MATERIAL TECHNOLOGY Co Ltd
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HANGZHOU SEEMORE NEW MATERIAL TECHNOLOGY Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/88Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/911Cooling
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03Extrusion 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
    • B29C48/04Particle-shaped
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395Means 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
    • B29C48/40Means 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/88Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/91Heating, e.g. for cross linking
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/92Measuring, controlling or regulating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92504Controlled parameter
    • B29C2948/9258Velocity
    • B29C2948/9259Angular velocity
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92504Controlled parameter
    • B29C2948/92704Temperature
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92819Location or phase of control
    • B29C2948/92857Extrusion unit
    • B29C2948/92904Die; Nozzle zone

Abstract

The present invention relates to a kind of method of manufacture heat-proof polylactic acid water bottle, belongs to macromolecular material and its processed and applied field, carries out as follows:Polylactic acid is with a certain proportion of nucleator via double screw extruder melting extrusion pelletize, by gained polylactic acid particle via injection-moulding device injection mo(u)lding, form bottle embryo, its bottleneck position is carried out heating, is incubated in mould before the bottle embryo demoulding, its sufficient crystallising is made, by this bottle of embryo via blow moulding equipment blow molding, the bottleneck and body position of bottle embryo is carried out heating, is incubated in the mould before the demoulding, its sufficient crystallising is made, finally prepared heat-proof polylactic acid water bottle.The method improves the crystalline rate of polylactic acid by nucleator, and the mould of two one-step forming equipment is blown by improving note so as to directly carry out sufficient crystallising in mould after shaping so that product size is more stable.The method enriches the moulding process of heat-proof polylactic acid product, has also further expanded the application of this emerging biological environmental production raw material of polylactic acid.

Description

A kind of method of manufacture heat-proof polylactic acid water bottle
Technical field
The present invention relates to a kind of plastics processing method, in particular, it is related to a kind of manufacture heat-proof polylactic acid water The method of bottle, the invention belongs to macromolecular material and its processed and applied field.
Background technology
Polylactic acid is a kind of family macromolecule material obtained as monomer Jing chemosynthesis or biosynthesiss with lactic acid, nontoxic It is nonirritant, with the excellent transparency and biodegradability, easily by the multiple-microorganism or animal and plant body of nature Enzyme catabolism, ultimately forms carbon dioxide and water, so as to not impact to environment.Its raw material mostly is plant amylum, fiber, Recyclability is strong, is independent of oil, has preliminarily formed vertical industry chain at present, realizes continuing benign development.Polylactic acid quilt It is considered most to be hopeful one of material of petroleum replacing base conventional plastic, in packaging fields such as medicine, container, thin film, clothing, Extensively apply in terms of the fiber arts such as blanket, automobile ornament, and the moulding material such as electronic apparatus shell.
Polylactic acid has good machinability, adapts to the various moulding processs such as injection, blowing, plastic uptake, extrusion.But due to Its crystalline rate is very slow and degree of crystallinity is relatively low so that during polylactic acid processing and forming, the cycle is longer, dimensional stability is poor.Typical case is poly- At 50~80 DEG C, the heat distortion temperature of the polylactic acid article that Conventional processing methods are obtained is less than the vitrification point (Tg) of lactic acid 60 DEG C, cannot much meet the normal using even transport temperature of many products, therefore thermostability is restriction polylactic acid application One big factor.
The major technique for improving polylactic acid thermostability is the crystal property for improving polylactic acid, improves the degree of crystallinity of polylactic acid. In addition, also have be blended polylactic acid and high glass transition temperature (Tg) macromolecular material, introducing crosslinked structure, fiber reinforcement and receive The methods such as rice complex technique.
Current heat-proof polylactic acid processing technique is more based on directly injection, (sliding using addition nucleator and inorganic fill Stone powder) etc. the limited raising of method its heat resisting temperature, the general wall thickness of its product is thicker, simple structure, it is impossible to which satisfaction becomes increasingly abundant The market demand.Meanwhile, this kind of direct injecting products are relatively low due to dimension precision requirement, more using mould external heat, heat preserving method, Its degree of crystallinity is improved further, so as to further improve the heat resisting temperature of product.From technique, heat-proof polylactic acid product is improved Degree of crystallinity method typically have outside mould intercrystalline and film crystallize two kinds.Mould intercrystalline refers to the product before the demoulding to molding Product are incubated so as to sufficient crystallising, and this method products obtained therefrom accuracy to size is good, is unlikely to deform, but production life cycle compared with It is long;After crystallization refers to the finished product demoulding outside mould, further heated by baking oven, drying tunnel stove etc., be incubated so as to sufficient crystallising, it is this Method injection efficiency is high, but product size, shape are susceptible to change during secondary crystallization, it is adaptable to which accuracy to size is required The thicker product of not high or wall thickness.
Current polylactic acid the heat resistant product mainly water tumbler of injection class, disposable knife-fork-spoon, disposable lunch-box etc., some Spinning, the product of thin film class also can be realized a certain degree of heat-resisting by the stretching oriented crystalline after heating.And heat-proof polylactic acid Product is the coefficient result of polylactic acid modified formula, equipment or even technique, by adjusting to patent retrieval in recent years and market Look into it is found that polylactic acid Patents are concentrated mainly on polymerizable raw material, modified enhancing field, and the processing and forming in downstream is special In terms of being not process improving, it is related to less.How by polylactic acid, a kind of this new material is grafted onto existing plastic processing Industry Foundation, And to enhance production capacities be current pressing issue.Particularly, the mistake that two step method manufactures polylactic acid water bottle is being blown using note Cheng Zhong, as processing characteristics is particularly the difference of crystal property, and product is to heat resistance demand, polylactic acid and conventional plastic Contour machining procedure have significantly difference.
The content of the invention
The invention aims to solve prior art limitation, improve equipment mould, improves the processing of polylactic acid water bottle Moulding process, and the crystallization rate of polylactic acid is improved using nucleator, finally propose a kind of note based on tradition and blow two step method The manufacture method of the heat-resisting water bottle of effective polylactic acid.
The present invention it is a kind of manufacture heat-proof polylactic acid water bottle method, it is characterised in that methods described by note blow two step method into Type, is specifically carried out as steps described below:Polylactic acid particle of the one nucleator adding proportion between 0.5%~2% is provided;There is provided One water bottle bottle embryo injection-moulding device, adopts the mould with heating function;One bottle of embryo blow moulding equipment is provided, the mould with heating function is adopted Tool;By polylactic acid particle via the injection-moulding device injection mo(u)lding, bottle embryo, the mouth cylindrical part before the demoulding in mould to bottle embryo are formed Position carries out heating, is incubated so as to sufficient crystallising, and in mould, temperature is 100~110 DEG C, temperature retention time 1~10 minute;By this bottle Embryo is carried out heating, is protected to the bottleneck and body position of bottle embryo in the mould before the demoulding via the blow moulding equipment blow molding Temperature so as to sufficient crystallising, in mould, temperature is 100~110 DEG C, temperature retention time 1~10 minute;
Production can be present in simultaneously to the heating process of the bottleneck of bottle embryo in wherein described injection moulding process and blow-molding process Stream
Cheng Zhong, or only carry out one of them heating, incubation step;
Wherein described nucleator is organic or inorganic nucleator, and the polylactic acid particle led to polylactic acid raw material by nucleator Cross double screw extruder melting extrusion pelletize to be obtained, extrusion temperature is 160~190 DEG C;
Wherein described bottle embryo injection mold and blow mold can be heating, be incubated,
In wherein described injection moulding process after the injection mo(u)lding of bottle embryo, before the demoulding, its bottleneck portion is carried out heating, is incubated Process so as to sufficient crystallising;
In wherein described blow-molding process after the blow molding of water bottle, before the demoulding, its bottleneck and bottle portion are carried out plus Heat, isothermal holding so as to sufficient crystallising;
Wherein described water bottle refers to the water bottle that two step method molding is blown using note, also refers to and is held using the ampuliform of same method molding Device, such as feeding bottle etc.;
The heating means of wherein described mould are that Resistant heating or deep fat runner are heated;
The present invention provides the new method of manufacture heat-proof polylactic acid water bottle, based on the equipment Foundations of conventional plastic industry, technique Flow process is simple, and continuous production is good, low cost, is capable of achieving large-scale production.The heat-proof polylactic acid water bottle of present invention manufacture, size High precision, defect rate are low, heat-resist, and heat resisting temperature is at 90~110 DEG C.
Compared with prior art, the present invention has advantages below:
(1) the polylactic acid particle of the addition nucleator prepared by the present invention, manufacturing process are simple, and extruding pelletization process can be with It is added as needed on the inorganic fillers such as Pulvis Talci, color masterbatch etc..
(2) mould selected by the present invention is heated using resistance wire or deep fat runner, temperature during insulation to heat mould Control accuracy is high.
(3) the characteristics of present invention fully blows two step method mould with reference to note and work flow, as bottleneck is molded in bottle embryo It is that size is fixed after molding, and bottle embryo body ability final molding in blowing.We are selected in bottle embryo injection mo(u)lding to bottle embryo Bottleneck position carry out heating, be incubated so as to sufficient crystallising, and the bottleneck and body in blow-molding process to the water bottle after molding Position carries out heating, is incubated so as to sufficient crystallising.Certainly according to needs of production, on the one hand for raising as high as possible Production efficiency, on the one hand also agrees with actual mould structure as far as possible, can be to the heating of bottleneck in injection and blow-molding process Accept or reject.
The present invention has further expanded heat-proof polylactic acid product molding technology, solves note and blows the resistance to hot polymerization breast of two step method manufacture The problem of sour water bottle, one-step optimization its processing technique of going forward side by side.
Specific embodiment
The preparation of the heat-resisting feeding bottle of 1 polylactic acid of embodiment
The preparation of polylactic acid particle
Using commercially available TMP-3000, (many hydrazides imine compounds, our company voluntarily researches and develops nucleator, the patent No.: 201210162112.8), addition is 1%, and polylactic acid adopts commercially available Natureworks Products, and the trade mark is 4032D, is added Plus other are such as after the solvent of antioxidant, hydrolysis-resisting agent, lubricant etc., the melting extrusion pelletize in double screw extruder, Each section of temperature of extruder is as shown in table 1, screw speed 200rpm, and due to adopting the air-cooled pelletizing that suspends, particle does not cross water, thus adopts With can be standby after aluminium foil bag encapsulation, without the need for being separately dried.
Table 1, each section of Temperature Distribution of extruder
Subregion One area 2nd area 3rd area 4th area 5th area 6th area Head
Temperature (DEG C) 160 160 165 175 175 170 170
Above-mentioned particle is prepared as by feeding bottle bottle embryo using bottle embryo injection machine, injection temperature is 160~180 DEG C, can heated mould Have before the bottle embryo demoulding to bottle mouth position to carrying out heating, being incubated, holding temperature is 105 DEG C, temperature retention time is 5 minutes.
Above-mentioned bottle embryo is fabricated to by finished product feeding bottle using bottle embryo blow moulding machine, can heat mould before the feeding bottle demoulding to body at Carry out heating, be incubated, holding temperature is 105 DEG C, temperature retention time is 5 minutes.
Product propertiess
Feeding bottle heat resistance:108.5 DEG C of heat distortion temperature, using boiling water sterilize or vapor sterilization to product using without shadow Ring.
Finally it should be noted that:Obviously, above-described embodiment is only intended to clearly illustrate example of the present invention, not right The restriction of embodiment.For those of ordinary skill in the field, which can also be made on the basis of the above description The change or variation of its multi-form.There is no need to be exhaustive to all of embodiment.And thus it is amplified Obvious change or change still in protection scope of the present invention among.

Claims (1)

1. it is a kind of manufacture heat-proof polylactic acid water bottle method, it is characterised in that methods described by note blow two step method molding, specifically Carry out as steps described below:
[a] provides polylactic acid particle of the 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, using band The mould of heating function;
Particle in [c] step [a] forms bottle embryo, before the demoulding in mould via the injection-moulding device injection mo(u)lding in step [b] The bottleneck position of bottle embryo is carried out heating, is incubated so as to sufficient crystallising, temperature is 100~110 DEG C in mould, temperature retention time 1~ 10 minutes;
Bottle embryo in [d] step [c] via the blow moulding equipment blow molding in step [b], to bottle embryo in mould before the demoulding Bottleneck and body position carry out heating, are incubated so as to sufficient crystallising, and in mould, temperature is 100~110 DEG C, and temperature retention time 1~ 10 minutes;
In step [a], nucleator adopts TMP-3000.
CN201410085253.3A 2014-03-07 2014-03-07 A kind of method of manufacture heat-proof polylactic acid water bottle Active CN103831966B (en)

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
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
CN105153659B (en) * 2015-10-16 2017-11-28 深圳市绿意创新科技有限公司 Heat-resistance 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

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103102661A (en) * 2012-05-18 2013-05-15 杭州曦茂新材料科技有限公司 Rapid nucleating agent for polylactic resin
CN103619956A (en) * 2011-06-27 2014-03-05 三菱瓦斯化学株式会社 Injection-molded body

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3748487B2 (en) * 1997-12-26 2006-02-22 株式会社青木固研究所 Injection stretch blow molding method
CN101337416B (en) * 2007-07-02 2010-12-15 黄建铭 Manufacture method of heat-tolerance poly-lactic resin ejection formed piece
US20110313075A1 (en) * 2008-09-29 2011-12-22 Basf Se Aliphatic polyester
KR101715716B1 (en) * 2009-03-27 2017-03-13 가부시키가이샤 아데카 Process for producing plastic bottle
CN102585462A (en) * 2011-12-08 2012-07-18 汕头卜高通美实业有限公司 Heat-resistant polylactic acid composite material and preparation method thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103619956A (en) * 2011-06-27 2014-03-05 三菱瓦斯化学株式会社 Injection-molded body
CN103102661A (en) * 2012-05-18 2013-05-15 杭州曦茂新材料科技有限公司 Rapid nucleating agent for polylactic resin

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