CN101624103A - Method for blowing film and making bag by using full biodegradable material as base material - Google Patents
Method for blowing film and making bag by using full biodegradable material as base material Download PDFInfo
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- CN101624103A CN101624103A CN200910181321A CN200910181321A CN101624103A CN 101624103 A CN101624103 A CN 101624103A CN 200910181321 A CN200910181321 A CN 200910181321A CN 200910181321 A CN200910181321 A CN 200910181321A CN 101624103 A CN101624103 A CN 101624103A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
Abstract
The invention relates to a method for blowing a film and making a bag by using a full biodegradable material as a base material. The method comprises the following steps: (1) work preparation; (2) film blowing: adding a color parent stock, then blowing a film and finally obtaining the film; and (3) bag making: heat-sealing the film, sealing an opening and making a bag so as to obtain a finished bag, wherein the film blowing step has the following parameters: (a) controlling the temperature of a plasticization section of a film blowing machine to be 125-140 DEG C, the temperature of a homogenization section to be 140-150 DEG C and the temperature of an extrusion section to be 140-145 DEG C; (b) ensuring a length-diameter ratio L/D of a screw rod of the film blowing machine to be larger than 28:1, a blow ratio to be 1:2.5-1:3 and a height from a die orifice to a pull roll to be larger than 2.5m; and (c) maintaining the rotating speed of the screw rod to be 17-35 turns/minutes at the beginning and then gradually speeding up until catching up the take-up speed of the film. The method has the process requirement that the temperature of heat sealing and edge sealing is 140-180 DEG C. The existing equipment can be used for blowing the film and making the bag by using the full biodegradable material as the base material by the method to obtain a qualified product.
Description
Technical field
The present invention relates to a kind of application process of full-biodegradable material, specifically be a kind of be blown film, the bag-making method of base-material with the full-biodegradable material.
Background technology
All use the plastic packing product of making as raw material with polyethylene in a large number in industry situations such as people's daily life and industrial products external packing and retail business, these plastic packaging bags (film) are the materials of cannot degrading, and are harmful to environment, are unfavorable for protecting environment.At this situation, biological degradation plastics is used more and more.Biological degradation plastics mainly is to be made through microbial fermentation or synthetic Polymer with biodegradability by natural polymer (as starch, cellulose, chitin) or agricultural byproducts, as thermoplastic starch plastic, aliphatic polyester, poly(lactic acid), starch/polyvinyl alcohol etc.Concrete commercial application facet, up to the present, Italian NOVMANT company added polyvinyl alcohol (PVA) and produces product with " MaterBi " brand since the nineties in last century in starch; Germany BASF exploitation polyester and starch are that main aliphatics aromatic atactic polyester (Ecoflex) raw material is produced 140000 tons per year; Australia Biograde makes BF etc. with thermoplastic starch (TPS), aliphatic polyester (AP) and natural plasticizer (glycerine and sorbierite) blend and has possessed certain blown film, the condition of bag.But full-biodegradable material has poor stability, outside features such as aspect dependences such as processing temperature, air humidity are bigger, the equipment that goods are processed in its extension also research and development make supporting come out.Utilize existing installation, it is the problems that also do not solve fully that the production and processing of complete biodegradable raw material is become up-to-standard goods.
In sum, this area lacks the processing technology of a cover utilization biodegradation material blown film, printing, bag under the existing installation condition and the method that most common failure is handled.
In the prior art, the active section of inflation film manufacturing machine comprises conveyor screw and cooling system; Bag is the film that inflation film manufacturing machine obtains to be cut out with the Bag Making Machine edge sealing through mould obtain.
Summary of the invention
In order to solve the above-mentioned problems in the prior art, what the invention provides a kind of maturation utilizes existing installation (inflation film manufacturing machine), is blown film, the bag-making method of raw material with the full-biodegradable material, and concrete technical scheme is as follows:
A kind of is blown film, the bag-making method of base-material with the full-biodegradable material, and step comprises:
1) operation is prepared;
2) blown film: add color masterbatch, carry out blown film again, obtain film at last; Technological parameter comprises:
A) the fluxing zone temperature of control inflation film manufacturing machine is 125～140 ℃, 140～150 ℃ of homogenizing zone temperature, 140～145 ℃ of extruding zone temperature, can guarantee like this full-biodegradable material be the color masterbatch of base-material can be fully, evenly plastify
B) the screw slenderness ratio L/D of described inflation film manufacturing machine was greater than 28: 1; Blow-up ratio is 1: 2.5 to 1: 3; Height from the die orifice to nip rolls is greater than 2.5m.Bigger length-diameter ratio helps increasing pressure and improves the ski-running effect, and reasonably blow-up ratio helps vertically and horizontally stretching intensity and film-blowing process processing.Height from the die orifice to nip rolls helps cooling greater than 2.5m.
C) screw speed is 17～35 rev/mins when starting, and pick up speed can be adjusted fixedly film bubble so effectively up to the rolling speed of catching up with film gradually subsequently.
3) bag: film with the cooresponding Bag Making Machine of required finished product carry out heat seal, seal, bag, obtain finished bag; Technological requirement is that heat seal, banding temperature are 140～180 ℃, can guarantee that full-biodegradable material is that the film of base-material fully seals.
Comprise in the described step 1):
Must thoroughly clear up machine barrel, screw rod, the die head of inflation film manufacturing machine before the blown film; Inflation film manufacturing machine each zone temperatures table of heating is checked;
The configuration color masterbatch, described color masterbatch is base-material with the full-biodegradable material, adds toner, coupling agent and dispersing agent, the shared weight of described base-material is not less than 42% of total weight.Described dispersing agent can select for use NNO or 15# white oil etc., coupling agent can select PE wax etc. for use.
To the detection of testing of described base-material, base-material water ratio≤1%; If water ratio＞1% must be done dry the processing to base-material before blown film, baking temperature must not be higher than 65 ℃, and must be controlled in one hour drying time.Drying gets final product with common drier.
Described step 2) in, be provided with filtering net behind the homogenizing zone, the order number of this filtering net is not less than 80 orders, and filtering net has 3～4 layers.The draw ratio of described nip rolls is 4～5, can guarantee that film is not easily broken, and guarantees that the longitudinal pulling force of film is enough big.The foaming of institute blown film material has gas, and control corona treatment, the surface tension that makes film be at 38 dyne ± 10%, or improves 5～10 ℃ of extrusion temperatures simultaneously.The control corona treatment is to adjust the outgoing current of corona treatment.
In the described step 3), the cooresponding base plate of heat-seal temperature cutter of Bag Making Machine is provided with heating apparatus, can guarantee sealing temperature and can not scorch to seal.The transmitting device that transmits film and finished bag is provided with smooth material.Described smooth material comprises parchamyn paper or flannelette.Can guarantee that like this film can not be bonded on the transmitting device, because contain the starch composition in the film, viscosity is very big.
Compared with prior art, this method adopts existing heat sealing machine and inflation film manufacturing machine, by adjusting process with equipment is done comformability improvement just can be that base-material carries out blown film and bag with the full-biodegradable material, and obtains acceptable product.
Description of drawings
Fig. 1 is the blow molding machine scheme drawing.
Fig. 2 is the Bag Making Machine scheme drawing.
The specific embodiment
The invention will be further described with concrete implementation below in conjunction with accompanying drawing.
Example 1～3 device therefor is blow molding machine shown in Figure 1 and Bag Making Machine shown in Figure 2.Described blow molding machine and Bag Making Machine are common devices in the prior art.
As Fig. 1, hopper 1, fluxing zone 2, homogenizing zone 3, filtering net 4, get to know 5, mould bubble 6, nip rolls 7, screw rod and machine barrel 8, film 9.
Color masterbatch adds material bin 1, enters screw rod and machine barrel 8 (screw rod is located in the machine barrel) again; In screw rod and machine barrel 8, arrive 5 (promptly the entering extruding zone) of getting to know through filter screen 4 again through fluxing zone 2 and homogenizing zone 3 successively; Extrude through getting to know, the foaming of blown film material has the mould of being so incensed that bubble 6; Mould bubble 6 then promptly gets the required film 9 of bag through nip rolls 7.
As Fig. 2, film 9 enters Bag Making Machine, according to the sack shape, is provided with heat-seal temperature cutter 10 and the cooresponding base plate 11 of heat-seal temperature cutter in desired location.Film 9 passes between heat-seal temperature cutter 10 and the cooresponding base plate 11 of heat-seal temperature cutter, and cooresponding base plate 11 heat seals of heat-seal temperature cutter 10 and heat-seal temperature cutter can be sealed film 9, obtain required sack.Among the following embodiment, also be provided with heating arrangement on the cooresponding base plate 11 of heat-seal temperature cutter, can guarantee seal quality like this, can be not overheated because of heat-seal temperature cutter 10, scorch sack, can be not low because of heat-seal temperature cutter 10 temperature yet, the heat out of reach sack section of sealing below, sack can't seal.
Example 1, full-biodegradable material base-material are that Italian NOVMANT company adds polyvinyl alcohol (PVA) " MaterBi " board product from the nineties in last century starch, blown film, bag-making method, and step comprises:
1) operation is prepared;
2) blown film: add color masterbatch, carry out blown film again, obtain film at last; Technological parameter comprises:
A) the fluxing zone temperature of control inflation film manufacturing machine is 130 ℃, 142 ℃ of homogenizing zone temperature, 140 ℃ of extruding zone temperature;
B) the screw slenderness ratio L/D of described inflation film manufacturing machine is 30: 1; Blow-up ratio is 1: 2.5; Height from the die orifice to nip rolls is 3m;
C) screw speed the time is 18 rev/mins in starting, subsequently gradually pick up speed up to the rolling speed of catching up with film;
3) bag: film with the cooresponding Bag Making Machine of required finished product carry out heat seal, seal, bag, obtain finished bag; Technological requirement is that heat seal, banding temperature are 150 ℃.
Comprise in the described step 1):
Must thoroughly clear up machine barrel, screw rod, the die head of inflation film manufacturing machine before the blown film; Inflation film manufacturing machine each zone temperatures table of heating is checked;
The configuration color masterbatch, described color masterbatch is a base-material with described full-biodegradable material, adds required toner, coupling agent and dispersing agent, the weight of described base-material accounts for 45% of color masterbatch total weight.
To the detection of testing of described base-material, base-material water ratio≤1%; If water ratio＞1% must be done dry the processing to base-material before blown film, baking temperature is 60 ℃, and must be controlled in one hour drying time.
Described step 2) in, be provided with filtering net behind the homogenizing zone, the order number of this filtering net is 83 orders, and filtering net haves three layers.The draw ratio of described nip rolls is 4.The foaming of institute blown film material has gas, and control corona treatment, the surface tension that makes film be at 35 dyne, or improves 5 ℃ of extrusion temperatures simultaneously.The control corona treatment is to adjust the outgoing current of corona treatment.
In the described step 3), the cooresponding base plate of heat-seal temperature cutter of Bag Making Machine is provided with heating apparatus.The transmitting device that transmits film and finished bag is provided with smooth material.Described smooth material comprises parchamyn paper.
It is main aliphatics aromatic atactic polyester (Ecoflex) base-material that example 2, full-biodegradable material base-material are selected the polyester of German BASF exploitation and starch for use, blown film, bag-making method, and step comprises:
1) operation is prepared;
2) blown film: add color masterbatch, carry out blown film again, obtain film at last; Technological parameter comprises:
A) the fluxing zone temperature of control inflation film manufacturing machine is 122 ℃, 146 ℃ of homogenizing zone temperature, 142 ℃ of extruding zone temperature;
B) the screw slenderness ratio L/D32 of described inflation film manufacturing machine: 1; Blow-up ratio is 1: 2.8; Height from the die orifice to nip rolls is 3.5m;
C) screw speed the time is 25 rev/mins in starting, subsequently gradually pick up speed up to the rolling speed of catching up with film;
3) bag: film with the cooresponding Bag Making Machine of required finished product carry out heat seal, seal, bag, obtain finished bag; Technological requirement is that heat seal, banding temperature are 165 ℃.
Comprise in the described step 1):
Must thoroughly clear up machine barrel, screw rod, the die head of inflation film manufacturing machine before the blown film; Inflation film manufacturing machine each zone temperatures table of heating is checked;
The configuration color masterbatch, described color masterbatch is base-material with the full-biodegradable material, adds toner, coupling agent and dispersing agent, the weight of described base-material is 50% of total weight.
To the detection of testing of described base-material, base-material water ratio≤1%; If water ratio＞1% must be done dry the processing to base-material before blown film, baking temperature is 50 ℃, and must be controlled in one hour drying time.
Described step 2) in, be provided with filtering net behind the homogenizing zone, the order number of this filtering net is not 85 orders, and filtering net has 4 layers.The draw ratio of described nip rolls is 4.5.The foaming of institute blown film material has gas, and control corona treatment, the surface tension that makes film be at 38 dyne, or improves 8 ℃ of extrusion temperatures simultaneously.The control corona treatment is to adjust the outgoing current of corona treatment.
In the described step 3), the cooresponding base plate of heat-seal temperature cutter of Bag Making Machine is provided with heating apparatus.The transmitting device that transmits film and finished bag is provided with smooth material.Described smooth material is a flannelette.
Example 3, full-biodegradable material base-material select for use Australian Biograde to make the BF material with thermoplastic starch (TPS), aliphatic polyester (AP) and natural plasticizer (glycerine and sorbierite) blend, blown film, bag-making method, and step comprises:
A kind of is blown film, the bag-making method of base-material with the full-biodegradable material, and step comprises:
1) operation is prepared;
2) blown film: add color masterbatch, carry out blown film again, obtain film at last; Technological parameter comprises:
A) the fluxing zone temperature of control inflation film manufacturing machine is 140 ℃, 150 ℃ of homogenizing zone temperature, 145 ℃ of extruding zone temperature;
B) the screw slenderness ratio L/D of described inflation film manufacturing machine is 35: 1; Blow-up ratio is 1: 3; Height from the die orifice to nip rolls is 4m;
C) screw speed the time is 35 rev/mins in starting, subsequently gradually pick up speed up to the rolling speed of catching up with film;
3) bag: film with the cooresponding Bag Making Machine of required finished product carry out heat seal, seal, bag, obtain finished bag; Technological requirement is that heat seal, banding temperature are 180 ℃.
Comprise in the described step 1):
Must thoroughly clear up machine barrel, screw rod, the die head of inflation film manufacturing machine before the blown film; Inflation film manufacturing machine each zone temperatures table of heating is checked;
The configuration color masterbatch, described color masterbatch is base-material with the full-biodegradable material, adds toner, coupling agent and dispersing agent, described base-material weight accounts for 55% of total weight.
To the detection of testing of described base-material, base-material water ratio≤1%; If water ratio＞1% must be done dry the processing to base-material before blown film, baking temperature must not be higher than 62 ℃, and must be controlled in one hour drying time.
Described step 2) in, be provided with filtering net behind the homogenizing zone, the order number of this filtering net is not less than 85 orders, and filtering net has 4 layers.The draw ratio of described nip rolls is 5.The foaming of institute blown film material has gas, and control corona treatment, the surface tension that makes film be at 41 dyne, or improves 10 ℃ of extrusion temperatures simultaneously.The control corona treatment is to adjust the outgoing current of corona treatment.
In the described step 3), the cooresponding base plate of heat-seal temperature cutter of Bag Making Machine is provided with heating apparatus.The transmitting device that transmits film and finished bag is provided with smooth material.Described smooth material is a parchamyn paper.
In the described step 1,2 and 3, described dispersing agent can select for use NNO or 15# white oil etc., coupling agent can select PE wax etc. for use, because these are more common in the prior art, has not further been limited at this.
Claims (8)
1, a kind of is blown film, the bag-making method of base-material with the full-biodegradable material, it is characterized in that step comprises:
1) operation is prepared;
2) blown film: in inflation film manufacturing machine, add color masterbatch, carry out blown film again, obtain film at last; Technological parameter comprises:
A) the fluxing zone temperature of control inflation film manufacturing machine is 125～140 ℃, 140～150 ℃ of homogenizing zone temperature, 140～145 ℃ of extruding zone temperature;
B) the screw slenderness ratio L/D of described inflation film manufacturing machine was greater than 28: 1; Blow-up ratio is 1: 2.5 to 1: 3; Height from the die orifice to nip rolls is greater than 2.5m;
C) screw speed the time is 17～35 rev/mins in starting, subsequently gradually pick up speed up to the rolling speed of catching up with film;
3) bag: film with the cooresponding Bag Making Machine of required finished product carry out heat seal, seal, bag, obtain finished bag; Technological requirement is that heat seal, banding temperature are 140～180 ℃.
2, feature according to claim 1 be described be blown film, the bag-making method of base-material with the full-biodegradable material, it is characterized in that comprising in the step 1):
Must thoroughly clear up machine barrel, screw rod, the die head of inflation film manufacturing machine before the blown film; Inflation film manufacturing machine each zone temperatures table of heating is checked;
The configuration color masterbatch, described color masterbatch is base-material with the full-biodegradable material, adds toner, coupling agent and dispersing agent, the shared weight of described base-material is not less than 42% of total weight;
To the detection of testing of described base-material, base-material water ratio≤1%; If water ratio＞1% must be done dry the processing to base-material before blown film, baking temperature must not be higher than 65 ℃, and must be controlled in one hour drying time.
3, feature according to claim 1 be described be blown film, the bag-making method of base-material with the full-biodegradable material, it is characterized in that described step 2) in, be provided with filtering net behind the homogenizing zone, the order number of this filtering net is not less than 80 orders, filtering net has 3～4 layers.
4, feature according to claim 1 be described be blown film, the bag-making method of base-material with the full-biodegradable material, it is characterized in that described step 2) in, the draw ratio of described nip rolls is 4～5.
5, feature according to claim 1 be described be blown film, the bag-making method of base-material with the full-biodegradable material, it is characterized in that described step 2) in, institute's blown film material foaming has gas, the control corona treatment, the surface tension that makes film is at 38 dyne ± 10%, or improves 5～10 ℃ of extrusion temperatures simultaneously.
6, feature according to claim 1 be described be blown film, the bag-making method of base-material with the full-biodegradable material, it is characterized in that in the described step 3) that the cooresponding base plate of heat-seal temperature cutter of Bag Making Machine is provided with heating apparatus.
7, feature according to claim 1 be described be blown film, the bag-making method of base-material with the full-biodegradable material, it is characterized in that in the described step 3) that the transmitting device that transmits film and finished bag is provided with smooth material.
8, feature according to claim 7 be described be blown film, the bag-making method of base-material with the full-biodegradable material, it is characterized in that described smooth material comprises parchamyn paper or flannelette.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910181321A CN101624103A (en) | 2009-07-17 | 2009-07-17 | Method for blowing film and making bag by using full biodegradable material as base material |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910181321A CN101624103A (en) | 2009-07-17 | 2009-07-17 | Method for blowing film and making bag by using full biodegradable material as base material |
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| CN101624103A true CN101624103A (en) | 2010-01-13 |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102582126A (en) * | 2012-03-02 | 2012-07-18 | 无锡佳泰科技有限公司 | Processing technology for flanging plastic film bag |
| CN103640770A (en) * | 2013-09-29 | 2014-03-19 | 桐城市福润包装材料有限公司 | Plastic bag production technology |
| CN103756113A (en) * | 2013-12-18 | 2014-04-30 | 戴骏超 | Agricultural mulch film formula and film blowing bag-making method |
| CN103756115A (en) * | 2013-12-18 | 2014-04-30 | 戴骏超 | Shopping bag film formula and film blowing bag-making method |
| CN103756086A (en) * | 2013-12-18 | 2014-04-30 | 戴骏超 | Formula for recyclable kitchen garbage bag film and film blowing bag-making method |
| CN104827710A (en) * | 2015-05-29 | 2015-08-12 | 东莞豪顺家具有限公司 | Blank holding device of double-layer thin film |
| CN105383094A (en) * | 2015-12-10 | 2016-03-09 | 安庆市鑫顺塑业有限公司 | Film blowing and heat sealing integrated machine |
| CN105398042A (en) * | 2015-12-10 | 2016-03-16 | 安庆市鑫顺塑业有限公司 | Film blowing and heat sealing mechanism |
| CN110696433A (en) * | 2019-10-14 | 2020-01-17 | 浙江莱恩克风机有限公司 | Decomposition-prevention leakage flow blooming bottom bag making machine suitable for PE plastic bag production |
| CN111959037A (en) * | 2020-08-10 | 2020-11-20 | 广东开放大学（广东理工职业学院） | Complete sets is made to full biodegradable environmental protection bag blown film china ink printing system bag |
| CN112480510A (en) * | 2018-08-09 | 2021-03-12 | 桐乡市凯瑞包装材料有限公司 | Manufacturing process of improved biodegradable express bag |
| CN113650275A (en) * | 2021-07-28 | 2021-11-16 | 佛山市弘禾新材料科技有限公司 | Preparation device and preparation method of antibacterial waterproof fresh-keeping bag |
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2009
- 2009-07-17 CN CN200910181321A patent/CN101624103A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102582126A (en) * | 2012-03-02 | 2012-07-18 | 无锡佳泰科技有限公司 | Processing technology for flanging plastic film bag |
| CN103640770B (en) * | 2013-09-29 | 2016-08-10 | 桐城市福润包装材料有限公司 | A kind of plastic bag production technology |
| CN103640770A (en) * | 2013-09-29 | 2014-03-19 | 桐城市福润包装材料有限公司 | Plastic bag production technology |
| CN103756113A (en) * | 2013-12-18 | 2014-04-30 | 戴骏超 | Agricultural mulch film formula and film blowing bag-making method |
| CN103756115A (en) * | 2013-12-18 | 2014-04-30 | 戴骏超 | Shopping bag film formula and film blowing bag-making method |
| CN103756086A (en) * | 2013-12-18 | 2014-04-30 | 戴骏超 | Formula for recyclable kitchen garbage bag film and film blowing bag-making method |
| CN104827710A (en) * | 2015-05-29 | 2015-08-12 | 东莞豪顺家具有限公司 | Blank holding device of double-layer thin film |
| CN105383094A (en) * | 2015-12-10 | 2016-03-09 | 安庆市鑫顺塑业有限公司 | Film blowing and heat sealing integrated machine |
| CN105398042A (en) * | 2015-12-10 | 2016-03-16 | 安庆市鑫顺塑业有限公司 | Film blowing and heat sealing mechanism |
| CN105398042B (en) * | 2015-12-10 | 2018-02-23 | 安庆市鑫顺塑业有限公司 | Blown film heat device |
| CN112480510A (en) * | 2018-08-09 | 2021-03-12 | 桐乡市凯瑞包装材料有限公司 | Manufacturing process of improved biodegradable express bag |
| CN112480510B (en) * | 2018-08-09 | 2023-04-25 | 浙江茵创新材料科技有限公司 | Manufacturing process of improved biodegradable express bag |
| CN110696433A (en) * | 2019-10-14 | 2020-01-17 | 浙江莱恩克风机有限公司 | Decomposition-prevention leakage flow blooming bottom bag making machine suitable for PE plastic bag production |
| CN111959037A (en) * | 2020-08-10 | 2020-11-20 | 广东开放大学（广东理工职业学院） | Complete sets is made to full biodegradable environmental protection bag blown film china ink printing system bag |
| CN113650275A (en) * | 2021-07-28 | 2021-11-16 | 佛山市弘禾新材料科技有限公司 | Preparation device and preparation method of antibacterial waterproof fresh-keeping bag |
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