CN1908056A - Polystyrene plastics film and blow molding manufacturing technique - Google Patents
Polystyrene plastics film and blow molding manufacturing technique Download PDFInfo
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- CN1908056A CN1908056A CN 200610069698 CN200610069698A CN1908056A CN 1908056 A CN1908056 A CN 1908056A CN 200610069698 CN200610069698 CN 200610069698 CN 200610069698 A CN200610069698 A CN 200610069698A CN 1908056 A CN1908056 A CN 1908056A
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Abstract
the invention discloses a polyphenylacetylene plastic film and manufacturing technology of blow molding in the phenylethene copolymer domain, which comprises the following parts: 40%-75% polyphenylacetylene, 15%-38% thermoplastic elastomer, 4%-8% reinforcer and 6% -10% flexibilizer. the invention reduces cost by 50%, which is fit for packing candy.
Description
Technical field
The invention belongs to cinnamic copolymer field.
Background technology
Existing packing film mostly adopts PVC (polyvinyl chloride), PET (polyethylene terephthalate), glassine paper etc.The PVC film is more common in the packing bag of the mulch film in rural area, large chemical fertilizer, solid state chemistry product.Particularly those painted films all are polyvinyl chloride film basically.The photostabilization of polyvinylchloride film, ageing resistance is relatively good and have reasonable tear-resistant performance, can breathe freely, and be a kind of cleaning, colourless, clear films.The PVC packing film is with low cost, be widely used, but its harm is also very big.Objectionable impurities in this film is separated out easily, after entering human body with food, human body there is carcinogenesis, particularly disturbs human endocrine, cause women's breast cancer, newborn infant's birth defect, male genetic obstacle even mental disorder etc., thereby the production of a lot of in the world restriction PVC of country packing films.The PVC packaging film generally is disposable use, uses the PVC packaging film can produce more not environmental protection waste in a large number, brings many problems for the processing of waste., when handling, can produce underground water and soil and pollute as the softening agent in the PVC auxiliary agent and stablizer in the garbage loading embeading mode; And when needing to handle with the burning mode, can produce a kind of carcinogens of Dioxins that cries environment and human body are caused disadvantageous effect.Domestic associated row had set about formulating the use of relevant law, regulation limitations PVC packaging film already, developed the substitute of new environmental protection, safety simultaneously energetically.The packing film that domestic export enterprise exported product is used, for example candy torsion film, environmental protection package shrink film etc. need be from external imports, and price is high.
PET is a kind of novel heat shrinkable package material, very strong toughness, flexibility, agent of low hygroscopicity, low gas permeability is arranged, to the high corrosion-resistant and the good insulation performance of pharmaceutical chemicals, and simultaneously, it can also make multiple different thickness easily.Because the PET film has the characteristic of such brilliance, so its purposes also is various.It is now as wrapping material, decorative yarn, battery insulator, industrial belt, tape, sanitary apparatus etc.Because it has the recovery of being easy to, nontoxic, tasteless, good mechanical property, particularly meets characteristics such as environment protection, become the ideal substitute that replaces PVC at the PET of developed country.The used film of sound equipment and computer magnetic tape is the PET film mostly.At present, the PET film is being widely used in each production fields such as packing of printed wiring, electric wire and cable in electric motor, transformer, store battery, the electronic installation.The good toughness of PET film particularly is for the automatization of insulating material production engineering provides great help.In addition, its intensity height, transparency is good, weather resistance is strong, and the permeability of gas and moisture is low, also is fabulous material as wrapping material.Because its obdurability, high-clarity, to the coefficient security of temperature and humidity, so as the basic film that photograph and X-ray are used, it also often is subjected to people's favor.But compare with PVC, its production cost is too high, and than great, and kink property and shrinkability are too poor.
Glassine paper is a kind of interior lining paper and ornamental package paper of widespread use.Its transparency makes the people internally adorn commodity and comes into plain view, and surface plastic coating has performances such as protection against the tide, waterproof, airtight, heat-sealing later on again, and commodity are played the good protection effect.It has not static electrification, dustproof, advantage such as kink property is good, and shortcoming is that oxidation-resistance and humidity resistance are poor.
Along with the development of economic society and the raising of people's quality of life, people press for a kind of film pollution-free and cheap for manufacturing cost.By the film development trend, polystyrene film is more satisfactory a kind of film.Thereby domestic and international research and development and the production that all takes much count of polystyrene film.The polystyrene film that how to produce cheapness, environmental protection, excellent property becomes a difficult problem of pendulum in face of numerous scientific research personnel.In the prior art, the technology of producing polystyrene film adopts stretching method more.By the technology difference, can be divided into unilateral stretching shrink film and two-way stretch shrink film.Above-mentioned production technique all needs from external import specific equipment, and facility investment is huge.
Summary of the invention
For addressing the above problem, the invention provides a kind of polystyrene plastic film and production technique, can reduce pollution greatly, excellent performance and cheap for manufacturing cost to environment.
The scheme that the present invention solves its technical problem employing is: develop a kind of polystyrene plastic film, mainly form by general purpose polystyrene, thermoplastic elastomer, toughener, toughner, it is characterized in that each components contents (weight ratio) is: general purpose polystyrene is 40%-75%, thermoplastic elastomer is 15%-38%, toughener is 4%-8%, and toughner is 6%-10%.
Needs for films such as manufacturing food packaging films can add oxidation inhibitor, and its content is 1%-4%.
For making the needs of antistatic film, can add electrostatic agent, its content 1%-4%.
For with the frictional coefficient that reduces film and prevent film self adhesion, can add lubricant, its content 1%-4%.
The production technique of making above-mentioned film employing is a blow moulding, and technological process is carried out successively by following operation:
(1) with after each feed composition difference drying, stir mixing;
(2) will mix the back raw material and drop in the hopper of forcing machine, through extruding behind forcing machine heating, pressurization, the fusion plastification;
(3) feed pressurized air in the pipe of forcing machine, it is cylindric that pipe is blown into rapidly, is shaped into film by water or air cooling then;
(4) moulding is cut, packed to film after curling.
In the technical solution adopted in the present invention, the temperature that raw material is extruded in the forcing machine is 130 ℃-220 ℃.Draw ratio can adopt 4-6.Blow-up ratio is 2-6.Pressure is 0.25-0.6MPa.
The present invention has following beneficial effect:
1. have excellent environmental-protecting performance, environment is not constituted pollution;
2. compare with PVC, PET, glassine paper, proportion has reduced 1/3;
3. adopt the blow moulding production technique, change a little and can produce with common blow moulding machine, manufacturing cost is significantly less than PET, glassine paper, compares with external like product, and manufacturing cost reduces by 50%;
4. OPS (monodirectional tension film), the transparency of BOPS (biaxially oriented film), hardness, the well-pressed degree that adopts the present invention to produce all is higher than PVC, PET film;
5. kink property and heat-shrinkable are good, are suitable for candy wrapping, shrink label, heat sealing film, composite membrane, aluminium plating film, preservative film etc.
Embodiment
Embodiment one
General purpose polystyrene, thermoplastic elastomer, toughener, toughner are broken into granular (also not particle) respectively, and drying mixes under the normal temperature.The proportioning of each component (weight percent) is as follows in the mixing raw material: general purpose polystyrene: 67%, and thermoplastic elastomer: 20%, toughener: 5%, toughner: 8%.Put in the hopper of forcing machine after will above-mentioned raw materials mixing, be heated to 130 ℃, be forced into 0.25MPa, extrude behind the fusion plastification; In this process, regulate the diameter of pipe ring, make the diameter of film inflation caudacoria bubble and not the ratio (blow-up ratio) between the pipe ring diameter of inflation be 2; Regulate the rotating speed of forcing machine live roll, making the pulling speed of film and the ratio (draw ratio) between the pipe ring extruded velocity is 4.Feed pressurized air in the pipe of forcing machine, it is cylindric that pipe is blown into rapidly, is shaped into film by water or air cooling then; Moulding is cut, packed to film after curling.The production technique of polystyrene film is finished.
Embodiment two
Compare with embodiment one, in the present embodiment, the content of general purpose polystyrene is adjusted into 40%, and thermoplastic elastomer is 38%, and toughener is 8%, and toughner is 10%, and oxidation inhibitor is 4%, and other are identical with embodiment one.
Embodiment three
Compare with embodiment one, in the present embodiment, the content of general purpose polystyrene is adjusted into 70%, and thermoplastic elastomer is 15%, and toughener is 7%, and toughner is 8%.Other are identical with embodiment one.
Embodiment four
Compare with embodiment one, in the present embodiment, the content of general purpose polystyrene is 75%, and thermoplastic elastomer is 15%, and toughener is 4%, and toughner is 6%.Other are identical with embodiment one.
Embodiment five
Compare with embodiment one, in the present embodiment, the content of general purpose polystyrene is 60%, and thermoplastic elastomer is 25%, and toughener is 4%, and toughner is 8%, and electrostatic agent is 3%.Other are identical with embodiment one.
Embodiment six
Compare with embodiment one, in the present embodiment, the content of general purpose polystyrene is 55%, and thermoplastic elastomer is 30%, and toughener is 4%, and toughner is 8%, and lubricant is 3%.Other are identical with embodiment one.
Embodiment seven
Compare with embodiment one, in the present embodiment, the Heating temperature of mixing raw material is risen to 160 ℃.Other are identical with embodiment one.
Embodiment eight
Compare with embodiment one, in the present embodiment, the Heating temperature of mixing raw material is risen to 220 ℃.Other are identical with embodiment one.
Embodiment nine
Compare with embodiment seven, in the present embodiment, the pressure in the forcing machine is 0.4MPa.Other are identical with embodiment seven.
Embodiment ten
Compare with embodiment seven, in the present embodiment, the pressure in the forcing machine is 0.6MPa.Other are identical with embodiment seven.
Embodiment 11
Compare with embodiment eight, in the present embodiment, blow-up ratio is 4.Other are identical with embodiment eight.
Embodiment 12
Compare with embodiment eight, in the present embodiment, blow-up ratio is 6.Other are identical with embodiment eight.
Embodiment 13
Compare with embodiment nine, in the present embodiment, draw ratio is 5.Other are identical with embodiment nine.
Embodiment 14
Compare with embodiment nine, in the present embodiment, draw ratio is 6.Other are identical with embodiment nine.
Claims (9)
1. polystyrene plastic film, mainly form by general purpose polystyrene, thermoplastic elastomer, toughener, toughner, it is characterized in that the shared content of each component (weight ratio) is: general purpose polystyrene is 40%-75%, thermoplastic elastomer is 15%-38%, toughener is 4%-8%, and toughner is 6%-10%.
2. a kind of polystyrene plastic film according to claim 1 is characterized in that also comprising in the component oxidation inhibitor, and its content is 1%-4%.
3. a kind of polystyrene plastic film according to claim 1 is characterized in that also comprising in the component electrostatic agent, and its content is 1%-4%.
4. a kind of polystyrene plastic film according to claim 1 is characterized in that also comprising in the component lubricant, its content 1%-4%.
5. the blow moulding production technique of a polystyrene plastic film is characterized in that technological process carries out successively by following operation:
(1) with after described each feed composition difference drying of claim 1, stir mixing;
(2) mixed raw material is dropped in the hopper of forcing machine, through extruding behind forcing machine heating, pressurization, the fusion plastification;
(3) feed pressurized air in the pipe of forcing machine, it is cylindric that pipe is blown into rapidly, is shaped into film by water or air cooling then;
(4) moulding is cut, packed to film after curling.
6. the blow moulding production technique of a kind of polystyrene plastic film according to claim 5 is characterized in that extrusion temperature is 130 ℃-220 ℃.
7. the blow moulding production technique of a kind of polystyrene plastic film according to claim 5 is characterized in that draw ratio is 4-6.
8. the blow moulding production technique of a kind of polystyrene plastic film according to claim 5 is characterized in that blow-up ratio is 2-6.
9. the blow moulding production technique of a kind of polystyrene plastic film according to claim 5 is characterized in that pressure is 0.25-0.6MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610069698 CN1908056A (en) | 2006-08-18 | 2006-08-18 | Polystyrene plastics film and blow molding manufacturing technique |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200610069698 CN1908056A (en) | 2006-08-18 | 2006-08-18 | Polystyrene plastics film and blow molding manufacturing technique |
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| CN1908056A true CN1908056A (en) | 2007-02-07 |
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| CN 200610069698 Pending CN1908056A (en) | 2006-08-18 | 2006-08-18 | Polystyrene plastics film and blow molding manufacturing technique |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102152585A (en) * | 2010-12-16 | 2011-08-17 | 浙江强盟实业股份有限公司 | Twistable polyester film and preparation method thereof |
| CN108164881A (en) * | 2018-01-24 | 2018-06-15 | 宜兴市光辉包装材料有限公司 | A kind of PVC cold events sleeve label film and preparation method |
| RU2782616C1 (en) * | 2021-10-09 | 2022-10-31 | Общество с ограниченной ответственностью "Пластик" | Method for producing a polystyrene film |
-
2006
- 2006-08-18 CN CN 200610069698 patent/CN1908056A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102152585A (en) * | 2010-12-16 | 2011-08-17 | 浙江强盟实业股份有限公司 | Twistable polyester film and preparation method thereof |
| CN108164881A (en) * | 2018-01-24 | 2018-06-15 | 宜兴市光辉包装材料有限公司 | A kind of PVC cold events sleeve label film and preparation method |
| RU2782616C1 (en) * | 2021-10-09 | 2022-10-31 | Общество с ограниченной ответственностью "Пластик" | Method for producing a polystyrene film |
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Open date: 20070207 |