CN101934592A - Preparation technology of PET/PETG shrink film - Google Patents
Preparation technology of PET/PETG shrink film Download PDFInfo
- Publication number
- CN101934592A CN101934592A CN2010102051705A CN201010205170A CN101934592A CN 101934592 A CN101934592 A CN 101934592A CN 2010102051705 A CN2010102051705 A CN 2010102051705A CN 201010205170 A CN201010205170 A CN 201010205170A CN 101934592 A CN101934592 A CN 101934592A
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- film
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- preparation technology
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- 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
- B29C48/07—Flat, e.g. panels
- B29C48/08—Flat, e.g. panels flexible, e.g. films
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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
- B29C48/92—Measuring, controlling or regulating
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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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92009—Measured parameter
- B29C2948/92114—Dimensions
- B29C2948/92152—Thickness
-
- 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
- B29C2948/92323—Location or phase of measurement
- B29C2948/92438—Conveying, transporting or storage of articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92609—Dimensions
- B29C2948/92647—Thickness
-
- 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
- B29C2948/92933—Conveying, transporting or storage of articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- 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
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/911—Cooling
- B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
- B29C48/914—Cooling of flat articles, e.g. using specially adapted supporting means cooling drums
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
The invention discloses a preparation technology of a PET/PETG shrink film, comprising: 1. drying treatment: drying copolyester slices at the temperature of 65-75 DEG C; 2. melt extrusion: mixing the dried copolyester with functional master batch/ functional accessory ingredient, and adding into a single screw extruder to carry out melt extrusion; 3. die head/ casting strip quenching: after a melt extruded fusant enters a hanger-type die head by a fusant metering pump, a filter and a fusant pipeline, casting to a cooler drum via a die lip mouth to form the casting strip; 4. unilateral stretching: stretching the casting strip processed in the last step; and 5. rolling and slitting: measuring the thickness of the unilateral stretched film on line, dragging, and rolling; and finally, slitting, checking and packaging to obtain the film product. The product produced by the method has high transparency, good mechanical behavior, high output, high cooling speed and high production efficiency, and the tolerance of the thickness thereof is smaller than that of a blown film.
Description
Technical field
The present invention relates to a kind of preparation technology of PET/PETG shrink film.
Background technology
In recent years, the heat shrinkable package film is developed rapidly, just expand many kinds films such as PETG, PE, PP, PVDC to from single PVC shrink film, the continuous variation of the market demand, multi-level, the functional direction of heat-shrinkable film forward develops, many new technologies and new product have appearred, except having obtained the extensive use at fast food wheaten food, ceramic, tea set, component of machine, heat-shrinkable film combines with the technology of volatile rust prevention in the application of military machinery, hardware ﹠ tools, substitute and be coated with the method for irritating antirust oil, obtained to be extensive use of.
At present the method for general film forming has two kinds of rolling-molding method and doctor-blade casting processes: 1. rolling-molding method is to adopt various mixing machineries (as high-speed mixer, banbury, double roll mill or extruder) that resin and various auxiliary agent are mixed, and the plastics that mix are rolled into a ball or melt flows to calender by feeding machine.Because the rotating speed difference of the adjacent roller of calender, plastics are subjected to a kind of squeezing action and become film in two roller slits, be attached to and enter next roll gap on the roller, and roll gap diminishes gradually, after cooling, batch, obtain a kind of finished product of continuous length.2. doctor-blade casting process is that resin is dissolved in wiring solution-forming in the solvent, this solution is evenly spread on the continuous metal tape, with the motion of metal tape through a baking oven with evaporating solvent, then can be by peeling off down film on the metal tape, carry out drying through the effect of heating roller again, then through quenching, batch, obtain the finished product of continuous length.The film that above-mentioned two kinds of methods are produced exists respectively: the film that calendering obtains, and mechanical strength is not high, and the finished product power consumption is bigger than normal; The film that curtain coating obtains, production efficiency is lower, the intensity of film is also lower, owing to adopt solvent, has increased solvent recovering system, shortcomings such as raw material consumption height.
Summary of the invention
The present invention is directed to above-mentioned deficiency, a kind of multilayer extrusion composite technology is proposed, by to the prescription design and optimization, to cooling off, add the control of heat stretching process condition and optimizing, a kind of transparency height that makes, little, the good mechanical property of film thickness tolerance have better viscosity, chemical-resistant reagent, shrinkage factor height, recyclable utilization, film product that environment protecting is good.
Technical solution of the present invention:
A kind of production technology of PET shrink film is characterized in that: described preparation technology is:
1, the dry processing: drying is carried out in the copolyester section handle drying time＞6h under 65～75 ℃.
2, melt extrude: will mix with functional masterbatch/function additive through the copolymer resins that super-dry is handled, adding single screw extrusion machine melt extrudes, be divided into feed zone, preheating section, fluxing zone, homogenizing zone, discharging section, each section temperature is set at: 180 ℃-240 ℃-260 ℃-270 ℃-275 ℃, melt temperature is 270 ℃.
3, die head/chilling casting sheet: after the melt that melt extrudes enters hanger-style die by melt metering pump, filter, melt pipe, be cast to through the die lip mouth again and form the casting sheet on the cooler drum.The cooling water temperature of cooler drum is controlled at about 30 ℃.
4, simple tension: will carry out stretch processing through the casting sheet that the last step handles, the preheat temperature of cross directional stretch is 90～100 ℃, and draft temperature is 105～110 ℃, 3.5～4 times of draw ratios.Film after the stretching carries out cooling processing immediately.
5, rolling is cut: the film through simple tension passes through thickness measurement online, traction rolling, cuts at last, checks, packs, and is finished film.
Described simple tension step medium chain folder must be strengthened air-cooled, and control clip temperature is below 110 ℃.
The invention has the beneficial effects as follows: not only transparency height, good mechanical property of the product produced of method, and output height thus, the film thickness tolerance is little than inflation film, cooling velocity is fast, production efficiency is high.
The specific embodiment
1, the dry processing: drying is carried out in the copolyester section handle drying time＞6h under 65～75 ℃.
2, melt extrude: will mix with functional masterbatch/function additive through the copolymer resins that super-dry is handled, adding single screw extrusion machine melt extrudes, be divided into feed zone, preheating section, fluxing zone, homogenizing zone, discharging section, each section temperature is set at: 180 ℃-240 ℃-260 ℃-270 ℃-275 ℃, melt temperature is 270 ℃.
3, die head/chilling casting sheet: after the melt that melt extrudes enters hanger-style die by melt metering pump, filter, melt pipe, be cast to through the die lip mouth again and form the casting sheet on the cooler drum.The cooling water temperature of cooler drum is controlled at about 30 ℃.
4, simple tension: will carry out stretch processing through the casting sheet that the last step handles, the preheat temperature of cross directional stretch is 90～100 ℃, and draft temperature is 105～110 ℃, 3.5～4 times of draw ratios.
5, rolling is cut: the film through simple tension passes through thickness measurement online, traction rolling, cuts, checks, packs according to the specification of customer requirements at last, is finished film.
The PET film the key technical indexes of producing through above-mentioned steps can reach following standard:
1. hot strength (MPa) vertically 〉=200 laterally 〉=220
2. elongation at break (%) vertically 〉=140 laterally 〉=140
3. shrinkage factor (%) vertically≤5 laterally 〉=70
4. mist degree (%)≤7
To sum up, the present invention accomplishes the end in view.
Claims (2)
1. the preparation technology of a PET/PETG shrink film, it is characterized in that: described preparation technology is:
A, the dry processing: drying is carried out in the copolyester section handle drying time＞6h under 65～75 ℃;
B, melt extrude: will mix with functional masterbatch/function additive through the copolymer resins that super-dry is handled, adding single screw extrusion machine melt extrudes, be divided into feed zone, preheating section, fluxing zone, homogenizing zone, discharging section, each section temperature is set at: 180 ℃-240 ℃-260 ℃-270 ℃-275 ℃, melt temperature is 270 ℃;
C, die head/chilling casting sheet: after the melt that melt extrudes enters hanger-style die by melt metering pump, filter, melt pipe, be cast to through the die lip mouth and form the casting sheet on the cooler drum, the cooling water temperature of cooler drum is controlled at about 30 ℃;
D, simple tension: will carry out stretch processing through the casting sheet that the last step handles, the preheat temperature of cross directional stretch is 90～100 ℃, and draft temperature is 105～110 ℃, and 3.5～4 times of draw ratios, the film after the stretching carry out cooling processing immediately;
E, rolling are cut: the film through simple tension passes through thickness measurement online, traction rolling, cuts at last, checks, packs, and is finished film.
2. the preparation technology of a kind of PET/PETG shrink film as claimed in claim 1 is characterized in that: described simple tension step medium chain folder must be strengthened air-cooled, and control clip temperature is below 110 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102051705A CN101934592A (en) | 2010-06-17 | 2010-06-17 | Preparation technology of PET/PETG shrink film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102051705A CN101934592A (en) | 2010-06-17 | 2010-06-17 | Preparation technology of PET/PETG shrink film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101934592A true CN101934592A (en) | 2011-01-05 |
Family
ID=43388279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102051705A Pending CN101934592A (en) | 2010-06-17 | 2010-06-17 | Preparation technology of PET/PETG shrink film |
Country Status (1)
| Country | Link |
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| CN (1) | CN101934592A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102205654A (en) * | 2011-04-19 | 2011-10-05 | 吴国逵 | One-step production process of polyethylene (PE) breathable film |
| CN103709686A (en) * | 2013-12-27 | 2014-04-09 | 青岛日能拉伸膜科技股份有限公司 | High-transparency biaxially-oriented polyester film |
| CN104859153A (en) * | 2015-04-28 | 2015-08-26 | 桐城市新丰彩印包装有限公司 | Machining process of PVB film |
| CN107571530A (en) * | 2017-08-12 | 2018-01-12 | 江苏华跃纺织新材料科技有限公司 | A kind of production equipment of and above polyester section one-shot forming clothes manufacture |
| CN107610585A (en) * | 2017-09-18 | 2018-01-19 | 江苏景宏新材料科技有限公司 | A kind of preparation for washing transparent thermal contraction type beer bottle label and its wash mark technique |
| CN109808269A (en) * | 2019-01-25 | 2019-05-28 | 深圳市蓝云新型材料有限公司 | A kind of novel GAG material and preparation method thereof |
| CN111098627A (en) * | 2019-12-26 | 2020-05-05 | 扬州市祥华新材料科技有限公司 | Preparation method of laminated hot stamping type electric aluminum hot stamping foil |
| CN111409244A (en) * | 2019-01-08 | 2020-07-14 | 湖北江升新材料有限公司 | Die head bolt alignment method |
| CN112936467A (en) * | 2021-03-11 | 2021-06-11 | 德华兔宝宝装饰新材股份有限公司 | Cabinet door plate and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1693050A (en) * | 2004-05-05 | 2005-11-09 | 加威尔聚脂有限公司 | Low density white polyester film |
-
2010
- 2010-06-17 CN CN2010102051705A patent/CN101934592A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1693050A (en) * | 2004-05-05 | 2005-11-09 | 加威尔聚脂有限公司 | Low density white polyester film |
Non-Patent Citations (1)
| Title |
|---|
| 冯树铭: "《热收缩聚酯薄膜的加工与应用》", 《塑胶工业》 * |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102205654A (en) * | 2011-04-19 | 2011-10-05 | 吴国逵 | One-step production process of polyethylene (PE) breathable film |
| CN102205654B (en) * | 2011-04-19 | 2013-03-20 | 吴国逵 | One-step production process of polyethylene (PE) breathable film |
| CN103709686A (en) * | 2013-12-27 | 2014-04-09 | 青岛日能拉伸膜科技股份有限公司 | High-transparency biaxially-oriented polyester film |
| CN104859153A (en) * | 2015-04-28 | 2015-08-26 | 桐城市新丰彩印包装有限公司 | Machining process of PVB film |
| CN107571530A (en) * | 2017-08-12 | 2018-01-12 | 江苏华跃纺织新材料科技有限公司 | A kind of production equipment of and above polyester section one-shot forming clothes manufacture |
| CN107610585A (en) * | 2017-09-18 | 2018-01-19 | 江苏景宏新材料科技有限公司 | A kind of preparation for washing transparent thermal contraction type beer bottle label and its wash mark technique |
| CN107610585B (en) * | 2017-09-18 | 2021-04-20 | 江苏景宏新材料科技有限公司 | Preparation of washable transparent heat-shrinkable beer bottle label and label washing process thereof |
| CN111409244A (en) * | 2019-01-08 | 2020-07-14 | 湖北江升新材料有限公司 | Die head bolt alignment method |
| CN111409244B (en) * | 2019-01-08 | 2023-05-30 | 湖北江升新材料有限公司 | Die head bolt alignment method |
| CN109808269A (en) * | 2019-01-25 | 2019-05-28 | 深圳市蓝云新型材料有限公司 | A kind of novel GAG material and preparation method thereof |
| CN111098627A (en) * | 2019-12-26 | 2020-05-05 | 扬州市祥华新材料科技有限公司 | Preparation method of laminated hot stamping type electric aluminum hot stamping foil |
| CN112936467A (en) * | 2021-03-11 | 2021-06-11 | 德华兔宝宝装饰新材股份有限公司 | Cabinet door plate and preparation method thereof |
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Application publication date: 20110105 |