CN101362539A - Polyester film for shrinkable cigarette pack - Google Patents
Polyester film for shrinkable cigarette pack Download PDFInfo
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- CN101362539A CN101362539A CNA2008101397075A CN200810139707A CN101362539A CN 101362539 A CN101362539 A CN 101362539A CN A2008101397075 A CNA2008101397075 A CN A2008101397075A CN 200810139707 A CN200810139707 A CN 200810139707A CN 101362539 A CN101362539 A CN 101362539A
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- polyester film
- shrinkable
- cigarette pack
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Abstract
The invention discloses a contracting type polyester film for packing cigarettes, which comprises three layered structures. The main composition of the upper surface layer of the layered structure is copolycondensation modified polyester; the main composition of the core layer of the layered structure is polyethylene glycol terephthalate; the main composition of the lower surface layer of the layered structure is copolycondensation modified polyester; the upper surface layer, the core layer and the lower surface layer are directly co-extruded and compounded. The polyester film has good fragrance protectiveness, and solves the problem that the BOPP cigarette film is not wear-resistant. Simultaneously, due to the high stiffness of the polyester film, a plurality of C5 or C9 petroresins is not required to be added as the stiffening agent in the core layer as the high contracting type cigarette film, therefore, the cost of the polyester film is nearly identical to that of the BOPP cigarette film, and the polyester film is particularly suitable for packing the cigarettes with stiff casement.
Description
Technical field
The present invention relates to the mylar technical field, relate in particular to a kind of mylar that is applicable to the hard-box cigarette packing.
Background technology
The packing cigarette film is called for short the cigarette film, the parcel hard-box cigarette mainly adopts the height of thickness 20～22um to shrink bidirectional stretching polypropylene film (being called for short BOPP cigarette film) in the market, and the low heat-sealing temperature that it had, contractibility, splendid smooth property, good optical performance etc. have satisfied the good machine of walking performance and the appearance requirement that requires in the cigarette pack process uniformly.
But, sandwich layer is based on polypropylene material, the top layer BOPP cigarette film based on the polypropylene copolymer of ternary or binary random copolymerization, owing to limit by the character of body material, its gas barrier property (fragrance protectiveness), surface gloss are all not really desirable, skin-material is lower than the glass temperature of normal temperature in addition, causes it to be scratched easily in the circulation process in transportation, and is serious even can whiten and haze, cause the cigarette-brand pattern unintelligible, color and luster is dim, this phenomenon is called as mill flower phenomenon.
Especially limit under the increasing situation in generally inaccurate tobacco product advertisement, marketing now, BOPP cigarette film more and more can not satisfy the demand of cigarette pack.
Summary of the invention
Technical matters to be solved by this invention is: a kind of polyester film for shrinkable cigarette pack is provided, this mylar not only has good heat-shrinkable, fragrance protectiveness and wear-resisting stroke of property, can adapt to the requirement of various hard-box cigarette wrapping machine high-speed packagings, and cost and BOPP cigarette film are also very nearly the same.
For solving the problems of the technologies described above, technical scheme of the present invention is: polyester film for shrinkable cigarette pack, have three shape structures layer by layer, and the Main Ingredients and Appearance of the upper epidermis of layered structure is the condensation copolymerization modified poly ester; The Main Ingredients and Appearance of the sandwich layer of layered structure is a polyethylene terephthalate; The Main Ingredients and Appearance on the following top layer of layered structure is the condensation copolymerization modified poly ester; Described upper epidermis, sandwich layer and following top layer be directly coextru-lamination all.
Wherein, contain the condensation copolymerization modified poly ester in the described sandwich layer, described condensation copolymerization modified poly ester accounts for the 5wt%～10wt% of described sandwich layer.
Wherein, the condensation copolymerization modified poly ester in the layered structure is the polyethylene terephthalate with dibasic acid or diatomic alcohol modification.
Wherein, the condensation copolymerization modified poly ester in the layered structure is PETG.
Wherein, contain slipping agent in the described upper epidermis, described slipping agent accounts for the 1.3wt%～2.08wt% of described upper epidermis; Contain antistatic additive in the described sandwich layer, described antistatic additive accounts for the 0.2wt%～0.4wt% of described sandwich layer; Contain slipping agent in the top layer under described, described slipping agent accounts for the described 0.26wt%～0.52wt% on top layer down.
Wherein, described antistatic additive is a kind of composite antistatic agent, contains non-ionic antistatic agent and cationic antistatic additive, and the weight ratio of described non-ionic antistatic agent and cationic antistatic additive is 1:4～1:3.
Wherein, described slipping agent is silicone resin particle and inorganic particulate.
Wherein, described inorganic particulate is a silicon dioxide.
After having adopted technique scheme, the invention has the beneficial effects as follows: because the Main Ingredients and Appearance of sandwich layer is a polyethylene terephthalate, this composition has good barrier and nonabsorbable to volatile matter (as fragrance), so this mylar has good fragrance protectiveness.Simultaneously, the glass temperature of polyethylene terephthalate reaches 70～80 ℃, and under the normal temperature, the top layer is very hard, is not easy to be scratched.Generally, the percent thermal shrinkage of mylar can be determined by drawing process, therefore, because disclosed mylar, main to adopt polyethylene terephthalate and condensation copolymerization modified poly ester be raw material, so its barrier properties for gases, surface gloss are all far above polypropylene or polypropylene copolymer.Simultaneously, the glass temperature height under the normal temperature, is not easy to be scratched.In addition, the structural unit of polyester molecule makes mylar have high very expansion property, need not also will add the C of more deal as high shrinkage type BOPP cigarette film in sandwich layer
5Or C
9Petroleum resin are done intensity strengthening agent, thereby disclosed mylar is had with the much the same cost of high shrinkage type BOPP cigarette film.
Add the condensation copolymerization modified poly ester in sandwich layer, for example PETG is more even for film is shunk in process of production, has more nargin to regulate the size of shrinkage percentage simultaneously.
Because upper epidermis contacts with metal covering in cigarette machine packaging process, adding slipping agent is to walk bag at a high speed in order to obtain low friction coefficient, to be beneficial to.The purpose of adding antistatic additive in the sandwich layer is in order to reduce the influence of static to packing.The purpose that slipping agent is added on following top layer is to cut smoothly in order to produce, and to improve the quality of dividing rouleau to cut, also reduces producing cut etc. in process of production.
The specific embodiment
Following embodiment only is used to illustrate the present invention, is not used in restriction protection scope of the present invention.
Embodiment 1
Composition of raw materials:
1) upper epidermis
PETG 94 weight portions,
Silicone slipping agent masterbatch 6 weight portions, wherein
The carrier of silicone slipping agent masterbatch is PETG, and effective ingredient is silicone resin particle and silicon dioxide granule, and concentration is 26wt%.
2) sandwich layer
PET 91 weight portions of cutting into slices,
PETG 8 weight portions,
Antistatic additive masterbatch 1 weight portion, wherein
The antistatic additive masterbatch contains the quarternary ammonium salt compound of non-ionic antistatic agent macrogol ester and cationic antistatic additive diethanol lauryl amine, with polyethylene terephthalate (PET) is carrier, concentration is 20wt%, and the weight ratio of the quarternary ammonium salt compound of macrogol ester and diethanol lauryl amine is 1:4.
3) top layer under
PETG 99 weight portions,
Silicone slipping agent masterbatch 1 weight portion, wherein
The carrier of silicone slipping agent masterbatch is PETG, and effective ingredient is silicone resin particle and silicon dioxide granule, and concentration is 26wt%.
Production technology:
A, sandwich layer raw material mix through after pre-crystallization, the dry processing, enter the single screw extrusion machine fusion plastification, through prefilter, measuring pump, main filter, enter die head then, the temperature of each section is set at: 260～270～280～285～290 ℃, melt temperature is 285 ℃.
After the raw material on B, upper epidermis and following top layer mixes respectively, the double screw extrusion machine that enters separately carries out fusion plastification, get rid of moisture and oligomer by the vacuum extractor that is installed on the extruder place, then through prefilter, measuring pump, main filter, enter die head, the temperature of each section is set at: 200～240～250～265～280 ℃, melt temperature is 270 ℃.
C, three layers of melt flow out after die head converges, and are attached on the chilling roller by electrostatic adsorption device, and cooling forms the casting sheet rapidly, passes through vertical, cross directional stretch then successively.The longitudinal stretching temperature is 60～90 ℃, and setting temperature is 25～40 ℃, and the longitudinal stretching ratio is 3.3～4.0; The preheating temperature of cross directional stretch is 90～100 ℃, and draft temperature is 105～110 ℃, and 3.3～4.0 times of draw ratios, heat setting temperature are 190～210 ℃, and the typing section is below 1.0% with the relaxation rate of cooling section, and the time is 1～3 second.The chain folder must be strengthened air-cooled, and control clip temperature is below 110 ℃, to prevent the sticking folder of copolymer resins.PET film after the stretching cools off immediately.
Behind D, the cross directional stretch, eliminate processing, online rolling, ageing treatment through thickness measuring, the cutting of limit portion, static again.
E, cut into corresponding finished product according to client's needs.
By the gross thickness 18um that above-mentioned raw materials proportioning and technological condition are produced, upper epidermis 1.5um, sandwich layer 15um, the polyester film for shrinkable cigarette pack of following top layer 1.5um, its physical performance index sees Table 1.
Embodiment 2
Composition of raw materials:
1) upper epidermis
PETG 95 weight portions,
Silicone slipping agent masterbatch 5 weight portions, wherein
The carrier of silicone slipping agent masterbatch is PETG, and effective ingredient is silicone resin particle and silicon dioxide granule, and concentration is 26wt%.
2) sandwich layer
PET 94 weight portions of cutting into slices,
PETG 5 weight portions,
Antistatic additive masterbatch 1 weight portion, wherein
The antistatic additive masterbatch contains the quarternary ammonium salt compound of non-ionic antistatic agent macrogol ester and cationic antistatic additive diethanol lauryl amine, with polyethylene terephthalate (PET) is carrier, concentration is 20wt%, and the weight ratio of the quarternary ammonium salt compound of macrogol ester and diethanol lauryl amine is 1:3.
3) top layer under
PETG 99 weight portions,
Silicone slipping agent masterbatch 1 weight portion, wherein
The carrier of silicone slipping agent masterbatch is PETG, and effective ingredient is silicone resin particle and silicon dioxide granule, and concentration is 26wt%.
Production technology is substantially the same manner as Example 1, and its physical performance index of the mylar of producing sees Table 1.
Embodiment 3
Composition of raw materials:
1) upper epidermis
PETG 93 weight portions,
Silicone slipping agent masterbatch 7 weight portions, wherein
The carrier of silicone slipping agent masterbatch is PETG, and effective ingredient is silicone resin particle and silicon dioxide granule, and concentration is 26wt%.
2) sandwich layer
PET 92 weight portions of cutting into slices,
PETG 6 weight portions,
Antistatic additive masterbatch 2 weight portions, wherein
The antistatic additive masterbatch contains the quarternary ammonium salt compound of non-ionic antistatic agent macrogol ester and cationic antistatic additive diethanol lauryl amine, with polyethylene terephthalate (PET) is carrier, concentration is 20wt%, and the weight ratio of the quarternary ammonium salt compound of macrogol ester and diethanol lauryl amine is 1:3.5.3) top layer under
PETG 98 weight portions,
Silicone slipping agent masterbatch 2 weight portions, wherein
The carrier of silicone slipping agent masterbatch is PETG, and effective ingredient is silicone resin particle and silicon dioxide granule, and concentration is 26wt%.
Production technology is substantially the same manner as Example 1, and its physical performance index of the mylar of producing sees Table 1.
Embodiment 4
Composition of raw materials:
1) upper epidermis
PETG 92 weight portions,
Silicone slipping agent masterbatch 8 weight portions, wherein
The carrier of silicone slipping agent masterbatch is PETG, and effective ingredient is silicone resin particle and silicon dioxide granule, and concentration is 26wt%.
2) sandwich layer
PET 88 weight portions of cutting into slices,
PETG 10 weight portions,
Antistatic additive masterbatch 2 weight portions, wherein
The antistatic additive masterbatch contains the quarternary ammonium salt compound of non-ionic antistatic agent macrogol ester and cationic antistatic additive diethanol lauryl amine, with polyethylene terephthalate (PET) is carrier, concentration is 20wt%, and the weight ratio of the quarternary ammonium salt compound of macrogol ester and diethanol lauryl amine is 1:4.
3) top layer under
PETG 98 weight portions,
Silicone slipping agent masterbatch 2 weight portions, wherein
The carrier of silicone slipping agent masterbatch is PETG, and effective ingredient is silicone resin particle and silicon dioxide granule, and concentration is 26wt%.
Production technology is substantially the same manner as Example 1, and its physical performance index of the mylar of producing sees Table 1.
Table 1
More than be to adopt two to go on foot the realization of progressively biaxial tension processing technology, also can adopt the production of synchronous bidirectional scratching process.
By the mylar that above-mentioned process is produced, contain three-layer co-extruded composite structure, comprise upper epidermis, following top layer and be positioned at middle sandwich layer, upper epidermis mainly plays a part smooth and heat-sealing, and heat-sealing is mainly played on following top layer.The gross thickness of film can be 12um～22um, and wherein, upper epidermis accounts for 5%～10% of overall film thickness respectively with following top layer, and thick more its cooresponding skin depth of film will suitably increase, the heat seal strength of film when sealing fast with assurance cigarette machine.
For each layer of the present invention, the condensation copolymerization modified poly ester is exactly except terephthalic acid (PTA) and two kinds of key components of ethylene glycol (EG), introduce the 3rd even the 4th component again and participate in copolymerization, generate asymmetric molecular structure and form unbodied PET copolymer.The the 3rd even the 4th monomer of introducing can be dibasic acid or diatomic alcohol.Wherein, dicarboxylic acids has isophthalic acid, malonic acid, succinic acid, adipic acid, decanedioic acid etc.; Diatomic alcohol has neopentyl glycol, propylene glycol, diethylene-glycol, 1,4-cyclohexanedimethanol etc.When carrying out modification by copolymerization with dicarboxylic acids, prepared PET copolymer is referred to as APET; If when carrying out modification by copolymerization with diatomic alcohol, prepared PET copolymer then is referred to as PETG.The condensation copolymerization modified poly ester that the present invention adopts is preferably PETG.
In the silicone slipping agent masterbatch of the present invention, its effective ingredient is silicone resin particle and silicon dioxide, the weight ratio of silicone resin particle and silicon dioxide is 25:1-20:1, but it is not limited to silicon dioxide, it also can be other inorganic particulate, can select silicon dioxide, cataloid, aluminium silicate, calcium carbonate, barium sulfate, aluminium oxide, mica, kaolin etc. for use as inorganic particulate, wherein, it is preferred using wet type and dry type silicon dioxide.The mean grain size of silicone resin particle is 0.03～5um, is preferably in 0.1～2um, and when mean grain size surpassed 5um, then surface gloss significantly reduced.The mean grain size of inorganic particulate is selected micron order for use, 1.2～3um preferably, and preferably sphericity (major diameter/minor axis) between 1.2～2.0.
The present invention has adopted antistatic additive in sandwich layer, its objective is in order to reduce the influence of static to packing.It is not limited to the disclosed composition of the foregoing description, but preferably adopt non-ionic antistatic agent and cationic antistatic agent to mix the antistatic additive of forming, non-ionic antistatic agent can adopt macrogol ester or ethers, cmpds such as polyol fatty acid ester, fatty acid alkanol amides, fatty amine ethyoxyl ether; Cationic antistatic agent can adopt quarternary ammonium salt compound, aliphatic amine polyoxyethylene ether quaternary ammonium salt of diethanol lauryl amine etc., and the weight ratio of non-ionic antistatic agent and cationic antistatic agent is in 1:4-1:3 scope.
Disclosed mylar, fragrance protectiveness can be good, solved the not difficult problem of wear-resisting flower of BOPP cigarette film, owing to its deflection height, need not also will add the C of more deal as high shrinkage type BOPP cigarette film in sandwich layer simultaneously
5Or C
9Petroleum resin are done intensity strengthening agent, thereby disclosed mylar is had with the much the same cost of high shrinkage type BOPP cigarette film.The mylar that the present invention discloses is a kind of shrinkage type mylar, is particularly suitable for the packing of hard-box cigarette.
Claims (8)
1. polyester film for shrinkable cigarette pack has three shape structures layer by layer, it is characterized in that:
The Main Ingredients and Appearance of the upper epidermis of layered structure is the condensation copolymerization modified poly ester;
The Main Ingredients and Appearance of the sandwich layer of layered structure is a polyethylene terephthalate;
The Main Ingredients and Appearance on the following top layer of layered structure is the condensation copolymerization modified poly ester;
Described upper epidermis, sandwich layer and following top layer be directly coextru-lamination all.
2. polyester film for shrinkable cigarette pack as claimed in claim 1 is characterized in that: contain the condensation copolymerization modified poly ester in the described sandwich layer, described condensation copolymerization modified poly ester accounts for the 5wt%～10wt% of described sandwich layer.
3. polyester film for shrinkable cigarette pack as claimed in claim 2 is characterized in that: the condensation copolymerization modified poly ester in the layered structure is the polyethylene terephthalate with dibasic acid or diatomic alcohol modification.
4. polyester film for shrinkable cigarette pack as claimed in claim 3 is characterized in that: the condensation copolymerization modified poly ester in the layered structure is PETG.
5. as described any polyester film for shrinkable cigarette pack of claim 1 to 4, it is characterized in that:
Contain slipping agent in the described upper epidermis, described slipping agent accounts for the 1.3wt%～2.08wt% of described upper epidermis;
Contain antistatic additive in the described sandwich layer, described antistatic additive accounts for the 0.2wt%～0.4wt% of described sandwich layer;
Contain slipping agent in the top layer under described, described slipping agent accounts for the described 0.26wt%～0.52wt% on top layer down.
6. polyester film for shrinkable cigarette pack as claimed in claim 5, it is characterized in that: described antistatic additive is a kind of composite antistatic agent, contain non-ionic antistatic agent and cationic antistatic additive, the weight ratio of described non-ionic antistatic agent and cationic antistatic additive is 1:4～1:3.
7. polyester film for shrinkable cigarette pack as claimed in claim 5 is characterized in that: described slipping agent is silicone resin particle and inorganic particulate.
8. polyester film for shrinkable cigarette pack as claimed in claim 7 is characterized in that: described inorganic particulate is a silicon dioxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101397075A CN101362539B (en) | 2008-08-30 | 2008-08-30 | Polyester film for shrinkable cigarette pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101397075A CN101362539B (en) | 2008-08-30 | 2008-08-30 | Polyester film for shrinkable cigarette pack |
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| Publication Number | Publication Date |
|---|---|
| CN101362539A true CN101362539A (en) | 2009-02-11 |
| CN101362539B CN101362539B (en) | 2010-08-18 |
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|---|---|---|---|
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102294863A (en) * | 2011-06-13 | 2011-12-28 | 卓高泰(广州)包装有限公司 | Impact resisting packaging sheet material and preparation method thereof |
| CN102321345A (en) * | 2011-06-13 | 2012-01-18 | 卓高泰(广州)包装有限公司 | Internal-smooth packing sheet and preparation method thereof |
| CN103223758A (en) * | 2013-04-17 | 2013-07-31 | 安徽国风塑业股份有限公司 | BOPET film for building engineering and its making method |
| CN106313828A (en) * | 2015-07-02 | 2017-01-11 | 江苏华信新材料股份有限公司 | PETG/PET/PETG co-extruded film and extrusion molding process therefor |
| CN110065281A (en) * | 2019-04-19 | 2019-07-30 | 佛山佛塑科技集团股份有限公司 | A kind of BOPP two-sided heat-sealing film and preparation method thereof |
| CN110341288A (en) * | 2019-07-30 | 2019-10-18 | 河南银金达彩印股份有限公司 | A kind of Composite Puncture film production process |
| US10525678B2 (en) * | 2011-10-14 | 2020-01-07 | Avery Dennison Corporation | Shrink film for label |
| CN110815998A (en) * | 2019-10-16 | 2020-02-21 | 湖南优珀斯新材料科技有限公司 | High-temperature-resistant paint-spraying protective film and production method thereof |
| CN112297561A (en) * | 2020-10-30 | 2021-02-02 | 安徽国风塑业股份有限公司 | Heat-sealable BOPEN film and preparation method thereof |
| CN112646137A (en) * | 2019-12-27 | 2021-04-13 | 富维薄膜（山东）有限公司 | Modified polyester for high-temperature heat-sealing polyester film, production method and production method of heat-sealing polyester film |
-
2008
- 2008-08-30 CN CN2008101397075A patent/CN101362539B/en active Active
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102294863A (en) * | 2011-06-13 | 2011-12-28 | 卓高泰(广州)包装有限公司 | Impact resisting packaging sheet material and preparation method thereof |
| CN102321345A (en) * | 2011-06-13 | 2012-01-18 | 卓高泰(广州)包装有限公司 | Internal-smooth packing sheet and preparation method thereof |
| US10525678B2 (en) * | 2011-10-14 | 2020-01-07 | Avery Dennison Corporation | Shrink film for label |
| CN103223758A (en) * | 2013-04-17 | 2013-07-31 | 安徽国风塑业股份有限公司 | BOPET film for building engineering and its making method |
| CN103223758B (en) * | 2013-04-17 | 2016-07-20 | 安徽国风塑业股份有限公司 | A kind of architectural engineering BOPET film and preparation method thereof |
| CN106313828A (en) * | 2015-07-02 | 2017-01-11 | 江苏华信新材料股份有限公司 | PETG/PET/PETG co-extruded film and extrusion molding process therefor |
| CN110065281A (en) * | 2019-04-19 | 2019-07-30 | 佛山佛塑科技集团股份有限公司 | A kind of BOPP two-sided heat-sealing film and preparation method thereof |
| CN110065281B (en) * | 2019-04-19 | 2024-04-02 | 佛山佛塑科技集团股份有限公司 | BOPP double-sided heat-sealing film and preparation method thereof |
| CN110341288A (en) * | 2019-07-30 | 2019-10-18 | 河南银金达彩印股份有限公司 | A kind of Composite Puncture film production process |
| CN110815998A (en) * | 2019-10-16 | 2020-02-21 | 湖南优珀斯新材料科技有限公司 | High-temperature-resistant paint-spraying protective film and production method thereof |
| CN112646137A (en) * | 2019-12-27 | 2021-04-13 | 富维薄膜（山东）有限公司 | Modified polyester for high-temperature heat-sealing polyester film, production method and production method of heat-sealing polyester film |
| CN112297561A (en) * | 2020-10-30 | 2021-02-02 | 安徽国风塑业股份有限公司 | Heat-sealable BOPEN film and preparation method thereof |
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|---|---|
| CN101362539B (en) | 2010-08-18 |
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