CN102634175A - Transparent PET (Polyethylene Terephthalate) packing material applicable to high-frequency welding, and preparation method thereof - Google Patents
Transparent PET (Polyethylene Terephthalate) packing material applicable to high-frequency welding, and preparation method thereof Download PDFInfo
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- CN102634175A CN102634175A CN201210125594XA CN201210125594A CN102634175A CN 102634175 A CN102634175 A CN 102634175A CN 201210125594X A CN201210125594X A CN 201210125594XA CN 201210125594 A CN201210125594 A CN 201210125594A CN 102634175 A CN102634175 A CN 102634175A
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- frequency welding
- wrapping material
- clear pet
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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
-
- 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
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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
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/875—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling for achieving a non-uniform temperature distribution, e.g. using barrels having both cooling and heating zones
-
- 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
- B29C2948/92561—Time, e.g. start, termination, duration or interruption
-
- 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
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92895—Barrel or housing
-
- 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)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
The invention relates to a transparent PET (Polyethylene Terephthalate) packing material applicable to high-frequency welding, which comprises the compositions in part by weight: 100 parts of PET, 20-40 parts of modifier, 2-10 parts of flame retardant, 0.5-5 parts of lubricant and 0.2-5 parts of antioxidant; a preparation method of the transparent PET packing material comprises the steps of: (1) weighing the needed materials according to the proportion, and conducting high-speed agitation for five to ten minutes in a high-speed agitator; and (2) adding the materials mixed in the step (1) into a double-screw extruder, and extruding granules through melting.
Description
Technical field
The present invention relates to a kind of technical field of polymer composite materials, especially a kind of clear PET wrapping material and preparation method who is suitable for hight frequency welding.
Background technology
Ratio-frequency welding is to utilize 10～500kHz high-frequency current through the weldment joint face heat that has a resistance, and under the situation that applies or do not exert pressure, reaches a kind of welding process of interatomic bond.Because the heat that ratio-frequency welding produces in the electric field of quick alternation depends on the physical dimension and the moment of dipole of sample material to be welded, therefore when test specimen placed between two electrodes that produce high-frequency electric field, dipole stood the effect of high field; Orientation is tended to consistent with direction of an electric field; Change along with the variation of electric polarity, in change procedure, the heat that electrical loss produces is absorbed by material for test; Molecule can be converted into heat energy with some vibrational energies, causes the material heating.For the plastics between electrode, its core temperature is high and four side temperature are low, and this hight frequency welding to plastics is an ideal very, is widely used in fields such as food product pack, toy for children, books stationery, medical object, family expenses object, automotive industry.Ratio-frequency welding as a kind of fast, efficient, homogeneous heating, Plastic Welding method easy and simple to handle; In in polymer materials, the hight frequency welding of thermoplastics SE (PVC) has important and practical meanings (Chinese patent 200410015796.4 in practical application; Chinese patent 201110027577.8; Chinese patent 200410084574.8), this is that its moment of dipole is due to the rapid variation of powerful electric field action owing to have electronegative chlorine atom in the PVC molecular chain.
Polyethylene terephthalate (PET) is by terephthalic acid and glycol ester generation dehydration condensation, has the good mechanical performance, solvent resistance (oil resistant, anti-fat, anti-diluted acid, diluted alkaline); Gas and vapor permeability are low; Transparency is high, but shielding of ultraviolet, and glossiness is good; Nontoxic, tasteless, wholesomeness is good, can directly be used for food product pack etc.Therefore be widely used in industries such as food product pack, health care, electronic apparatus, auto parts machinery, mechanical means and thin-film sheet.The same with PVC; Said PET can be used as the polymer materials of hight frequency welding equally; But its high frequency welding performance mainly contains the reason of two aspects not as PVC, the one, and the electronegativity that contains Sauerstoffatom in the PET molecular chain is strong not as the chlorine atom; Under high-frequency electric field, the variation of moment of dipole is strong not as the PVC molecule; The 2nd, that the electrical insulating property of PET can keep in very big frequency range basically is constant (when its dielectric loss is 103Hz 0.011, during 10Hz 0.018; In enclose patent 201010159621.6), therefore to improve the high frequency welding performance of PET, just must carry out modification to PET.
Several kinds of modes below the high frequency welding performance of raising plastics mainly adopts: the one, in plastics, add magnetizer (Chinese patent 87211334) or sensing element (Chinese patent 02115143); But can influence the mechanical property of plastics, be not suitable for the welding of thin-gage goods (like packaging film); The 2nd, adopt blending and modifying mode add the plastics of high frequency welding performance, SE (PVC), polyamide (PA), polyvinylidene chloride (PVDC) and ethylene-vinyl acetate (EVA) etc. have reached the purpose that has high frequency welding performance in the matrix material.A kind of mode in back is the hight frequency welding modification that is usually used in polymer materials; But for PET because its processing temperature is than higher (about 280 ℃), add low melting glass like materials such as PVC or PVDC; When the processing temperature of no show PET; Possibly decompose the hydrogen chloride gas that produces murder, processing difficulties the more important thing is the transparency that can influence PET; Therefore in order to make the PET plastics after the modification not only have the excellent hight frequency welding property and the good transparency, must select for use a kind of suitable polymers material to its blending and modifying.
(polyamide PA) is a kind of transparent Polyamide Engineering Plastic for transparent nylon (transparent nylon) or polymeric amide.Generally be employed on the high polymer main chain and introduce the hand hay cutter chain substituent or to suppress the generation of xln, realization transparency with the method that different monomers is carried out copolycondensation.Its transmittance can reach more than 90%, is superior to polycarbonate, and near synthetic glass, water-intake rate is 0.41%, is low than common nylon; Also have low haze, abrasion performance in addition, anti-ly scratch, heat-resisting water and have premium properties such as self-extinguishing, be the good transparent engineering plastics of a kind of over-all properties.Polymeric amide not only has excellent hight frequency welding property, and its processing temperature (about 290 ℃) is suitable with PET simultaneously, therefore can the two be carried out blending and modifying [Xu Hansong; Pan Qianqian; Zhu is newborn, and PA5935 is to the influence research of polyethylene terephthalate physical mechanics and processing characteristics, University Of Suzhou's journal; 2008,28 (1): 51-54].Come the high frequency welding performance of modified PET plastics that public reported is not also arranged as yet with transparent polyamide.
Summary of the invention
The purpose of this invention is to provide a kind of clear PET wrapping material and preparation method who is suitable for hight frequency welding, overcome the shortcoming that currently available products uses, its hight frequency welding property excellence, optical property and flame retardant resistance are good.The objective of the invention is to realize through following technical scheme:
A kind of clear PET wrapping material that are suitable for hight frequency welding, the weight quota of its various components is:
Further, said properties-correcting agent be polymeric amide with high frequency welding performance (polyamide, PA) or polyester glycol (polyester glycol, PETG), or the mixture of polymeric amide and polyester glycol, the blending ratio of the two is about 1: 2; Both guaranteed that material had good welding property, guaranteed the material transparency simultaneously.
Further, said fire retardant is trichloropropyl phosphate or tricresyl phosphate (2,3 dibromo third), is in order to postpone or to prevent high score subclass plastics incendiary auxiliary agent.
Further, said stablizer is a Zinic stearas, is can suppress or delay the crosslinked auxiliary agent of polymkeric substance decomposes goods in the course of processing.
Further, said lubricant is barium stearate or paraffin, be plastics in the course of processing, for reduce between polymer molecule and polymkeric substance and equipment between friction, to reach the auxiliary agent that increases mobile and release property.
Further, said oxidation inhibitor is antioxidant 1010 or antioxidant 1076, is the auxiliary agent that can slow down the polymkeric substance autoxidation.
A kind of preparation method who is suitable for the clear PET wrapping material of hight frequency welding may further comprise the steps:
(1) takes by weighing required material by above-mentioned proportioning, stirred 5-10 minute in the impeller high speed;
(2) material that step (1) is mixed joins in the twin screw extruder, through melt extruding granulation.
Further, twin screw expressing technique condition is in the said step (2): twin screw extruder temperature, a district: 280～300 ℃; Two districts: 280～300 ℃; Three districts: 280～300 ℃; Four districts: 280～300 ℃; Five districts: 280～300 ℃; Six districts: 280～300; Head temperature: 280～300 ℃; The residence time: 2～3 minutes
Of the present inventionly be suitable for the clear PET wrapping material of hight frequency welding and preparing method's beneficial effect is: hight frequency welding property is excellent, optical property and flame retardant resistance are good.
With high frequency welding performance with optically all PET is carried out blending and modifying than more excellent properties-correcting agent, give the excellent hight frequency welding property of matrix material and optical, be widely used in food product pack, toy for children packing, fields such as medicine equipment.
Embodiment
Embodiment 1:
The described clear PET wrapping material that are suitable for hight frequency welding, the weight quota of its various components is:
Embodiment 2:
The described clear PET wrapping material that are suitable for hight frequency welding, the weight quota of its various components is:
Embodiment 3:
The described clear PET wrapping material that are suitable for hight frequency welding, the weight quota of its various components is:
Embodiment 4:
The described clear PET wrapping material that are suitable for hight frequency welding, the weight quota of its various components is:
Embodiment 5:
The described clear PET wrapping material that are suitable for hight frequency welding, the weight quota of its various components is:
Embodiment 6:
The described clear PET wrapping material that are suitable for hight frequency welding, the weight quota of its various components is:
Embodiment 7:
The described clear PET wrapping material that are suitable for hight frequency welding, the weight quota of its various components is:
Embodiment 8:
The described clear PET wrapping material that are suitable for hight frequency welding, the weight quota of its various components is:
Embodiment 9:
The described clear PET wrapping material that are suitable for hight frequency welding, the weight quota of its various components is:
Embodiment 10:
The described clear PET wrapping material that are suitable for hight frequency welding, the weight quota of its various components is:
In the foregoing description 1～10, said trichloropropyl phosphate is replaceable to be tricresyl phosphate (2,3-dibromo third), and said barium stearate is replaceable to be paraffin, and said antioxidant 1010 is replaceable to be antioxidant 1076.
The foregoing description 1～10 described preparation method who is suitable for the clear PET wrapping material of hight frequency welding is: take by weighing required material by proportioning, stirred 5-10 minute in the impeller high speed; The material that mixes is joined in the twin screw extruder, through melt extruding granulation; The time that material stops in barrel is 2～3 minutes.
Twin screw expressing technique condition is: twin screw extruder temperature, a district: 280～300 ℃; Two districts: 280～300 ℃; Three districts: 280～300 ℃; Four districts: 280～300 ℃; Five districts: 280～300 ℃; Six districts: 280～300; Head temperature: 280～300 ℃; The processing rotating speed is 40-60r/min.
Performance test:
Tensile strength experimentizes by the GB/T1040 standard; Flexural strength experimentizes by GB/T 9341 standards; Notched Izod impact strength experimentizes by GB/T1043;
Show between prescription and material property
Above-described embodiment, the present invention embodiment a kind of more preferably just, those skilled in the art, common variation of in technical scheme scope of the present invention, carrying out and replacement all should be included in protection scope of the present invention.
Claims (8)
1. clear PET wrapping material that are suitable for hight frequency welding, it is characterized in that: the weight quota of its various components is:
2. the clear PET wrapping material that are suitable for hight frequency welding according to claim 1; It is characterized in that: said properties-correcting agent is polymeric amide or the polyester glycol with high frequency welding performance; Or the mixture of polymeric amide and polyester glycol, the blending ratio of the two is about 1: 2.
3. the clear PET wrapping material that are suitable for hight frequency welding according to claim 1 is characterized in that: said fire retardant is trichloropropyl phosphate or tricresyl phosphate (2, the 3-dibromo) propyl ester, is in order to postpone or to prevent high score subclass plastics incendiary auxiliary agent.
4. the clear PET wrapping material that are suitable for hight frequency welding according to claim 1, it is characterized in that: said stablizer is a Zinic stearas, is can suppress or delay the crosslinked auxiliary agent of polymkeric substance decomposes goods in the course of processing.
5. the clear PET wrapping material that are suitable for hight frequency welding according to claim 1; It is characterized in that: said lubricant is barium stearate or paraffin; Be that plastics are in the course of processing; For reduce between polymer molecule and polymkeric substance and equipment between friction, to reach the auxiliary agent that increases mobile and release property.
6. the clear PET wrapping material that are suitable for hight frequency welding according to claim 1, it is characterized in that: said oxidation inhibitor is antioxidant 1010 or antioxidant 1076, is the auxiliary agent that can slow down the polymkeric substance autoxidation.
7. one kind according to any described preparation method who is suitable for the clear PET wrapping material of hight frequency welding of claim 1～6, it is characterized in that: may further comprise the steps:
(1) takes by weighing required material by above-mentioned proportioning, stirred 5-10 minute in the impeller high speed;
(2) material that step (1) is mixed joins in the twin screw extruder, through melt extruding granulation.
8. the preparation method who is suitable for the clear PET wrapping material of hight frequency welding according to claim 5 is characterized in that: twin screw expressing technique condition is in the said step (2): twin screw extruder temperature, a district: 280～300 ℃; Two districts: 280～300 ℃; Three districts: 280～300 ℃; Four districts: 280～300 ℃; Five districts: 280～300 ℃; Six districts: 280～300; Head temperature: 280～300 ℃; The residence time: 2～3 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210125594XA CN102634175A (en) | 2012-04-26 | 2012-04-26 | Transparent PET (Polyethylene Terephthalate) packing material applicable to high-frequency welding, and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210125594XA CN102634175A (en) | 2012-04-26 | 2012-04-26 | Transparent PET (Polyethylene Terephthalate) packing material applicable to high-frequency welding, and preparation method thereof |
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| Publication Number | Publication Date |
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| CN102634175A true CN102634175A (en) | 2012-08-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201210125594XA Pending CN102634175A (en) | 2012-04-26 | 2012-04-26 | Transparent PET (Polyethylene Terephthalate) packing material applicable to high-frequency welding, and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104499292A (en) * | 2014-12-31 | 2015-04-08 | 江苏恒力化纤股份有限公司 | Heavy-caliber conveyer belt |
| CN104532389A (en) * | 2014-12-31 | 2015-04-22 | 江苏恒力化纤股份有限公司 | Water-repellent fabric and manufacturing method thereof |
| CN104532390A (en) * | 2014-12-31 | 2015-04-22 | 江苏恒力化纤股份有限公司 | Conductive fabric and preparation method thereof |
| CN104532392A (en) * | 2014-12-31 | 2015-04-22 | 江苏恒力化纤股份有限公司 | Porous super-bright polyester fiber and preparation method thereof |
| CN105566904A (en) * | 2016-03-23 | 2016-05-11 | 苏州锦腾电子科技有限公司 | High-temperature resistant packaging material and preparation method thereof |
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| CN1749314A (en) * | 2005-10-09 | 2006-03-22 | 华东理工大学 | PA/PET high molecule alloy material |
| CN101475733A (en) * | 2008-12-31 | 2009-07-08 | 深圳市长园长通热缩材料有限公司 | Flame-retardant environment friendly PET thermal shrinkage material and preparation thereof |
| CN102348762A (en) * | 2009-03-13 | 2012-02-08 | 巴斯夫欧洲公司 | Stabilized blends of polyester and polyamide |
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2012
- 2012-04-26 CN CN201210125594XA patent/CN102634175A/en active Pending
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| CN1749314A (en) * | 2005-10-09 | 2006-03-22 | 华东理工大学 | PA/PET high molecule alloy material |
| CN101475733A (en) * | 2008-12-31 | 2009-07-08 | 深圳市长园长通热缩材料有限公司 | Flame-retardant environment friendly PET thermal shrinkage material and preparation thereof |
| CN102348762A (en) * | 2009-03-13 | 2012-02-08 | 巴斯夫欧洲公司 | Stabilized blends of polyester and polyamide |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104499292A (en) * | 2014-12-31 | 2015-04-08 | 江苏恒力化纤股份有限公司 | Heavy-caliber conveyer belt |
| CN104532389A (en) * | 2014-12-31 | 2015-04-22 | 江苏恒力化纤股份有限公司 | Water-repellent fabric and manufacturing method thereof |
| CN104532390A (en) * | 2014-12-31 | 2015-04-22 | 江苏恒力化纤股份有限公司 | Conductive fabric and preparation method thereof |
| CN104532392A (en) * | 2014-12-31 | 2015-04-22 | 江苏恒力化纤股份有限公司 | Porous super-bright polyester fiber and preparation method thereof |
| CN104532389B (en) * | 2014-12-31 | 2017-03-01 | 江苏恒力化纤股份有限公司 | A kind of water repellent fabric and preparation method thereof |
| CN105566904A (en) * | 2016-03-23 | 2016-05-11 | 苏州锦腾电子科技有限公司 | High-temperature resistant packaging material and preparation method thereof |
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Inventor after: Li Benli Inventor after: Zheng Shaohui Inventor before: Li Benli |
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Application publication date: 20120815 |