CN103029396B - Biaxially oriented polypropylene shrink film for cigarette packages and manufacturing method and application of shrink film - Google Patents
Biaxially oriented polypropylene shrink film for cigarette packages and manufacturing method and application of shrink film Download PDFInfo
- Publication number
- CN103029396B CN103029396B CN201210570229.XA CN201210570229A CN103029396B CN 103029396 B CN103029396 B CN 103029396B CN 201210570229 A CN201210570229 A CN 201210570229A CN 103029396 B CN103029396 B CN 103029396B
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- Prior art keywords
- shrink film
- temperature
- biaxially oriented
- oriented polypropylene
- thickness
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- 235000019504 cigarettes Nutrition 0.000 title claims abstract description 25
- 229920006300 shrink film Polymers 0.000 title claims abstract description 25
- 229920006378 biaxially oriented polypropylene Polymers 0.000 title claims abstract description 24
- 239000011127 biaxially oriented polypropylene Substances 0.000 title claims abstract description 24
- 238000004519 manufacturing process Methods 0.000 title abstract description 5
- 239000011521 glass Substances 0.000 claims abstract description 14
- 239000002245 particle Substances 0.000 claims abstract description 10
- 238000002360 preparation method Methods 0.000 claims abstract description 7
- 238000005096 rolling process Methods 0.000 claims description 10
- 239000002994 raw material Substances 0.000 claims description 9
- 150000001412 amines Chemical class 0.000 claims description 5
- 229920005629 polypropylene homopolymer Polymers 0.000 claims description 5
- 229920001296 polysiloxane Polymers 0.000 claims description 5
- 239000004743 Polypropylene Substances 0.000 claims description 3
- -1 polypropylene Polymers 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 239000011324 bead Substances 0.000 abstract 1
- 239000002981 blocking agent Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 9
- 238000002156 mixing Methods 0.000 description 7
- 238000012856 packing Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000004806 packaging method and process Methods 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 3
- 230000000873 masking effect Effects 0.000 description 3
- 239000013078 crystal Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 229920006280 packaging film Polymers 0.000 description 2
- 239000012785 packaging film Substances 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
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
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 biaxially oriented polypropylene shrink film for cigarette packages and a manufacturing method and an application of the shrink film. In order to solve the problem that the haze of the existing films for cigarettes is high, glass beads with a certain particle size range are adopted as an anti-blocking agent, the thickness of each layer of the film is controlled within a certain range, and a specific preparation process is adopted to prepare the biaxially oriented polypropylene shrink film. The haze value of the biaxially oriented polypropylene shrink film is low, and the requirement of people on the high-grade cigarette packages can be satisfied.
Description
Technical field
The present invention relates to a kind of Biaxially oriented polypropylene shrink film, relate to a kind of Biaxially oriented polypropylene shrink film for cigarette pack and manufacture method thereof and application specifically, belong to technical field of macromolecules.
Background technology
Compared with ordinary packing film, it is low that BOPP cigarette film has heat-sealing temperature, good barrier property, intensity is high, low cost and other advantages, particularly BOPP cigarette shrink film, it has the premium properties such as good smooth performance, high shrinkage factor, good oil resistant performance of ink, is specially adapted to high speed or the low speed packaging of cigarette.Current national cigarette packing film consumption reaches more than 70,000 tons, and cigarette pack belongs to high-grade packaging, and people more and more pay attention to packaging, also more and more higher to the requirement of cigarette pack outward appearance, particularly more and more higher to transparency requirement.CN200910030639 application discloses a kind of packaging film for two-way stretch polypropylene low temperature self-constriction cigarette, and it improves by each layer composition of raw materials of film the packing film that Film Haze is 0.95%; CN201010269824 application discloses a kind of nano wearproof type carton box cigarette packaging BOPP film, and it adds nanosized silica particles, and make the film prepared have good wearability, transparency, the mist degree of film is 0.9 ~ 1%; But, there is the cigarette packaging film of about 1% mist degree, still can not meet the demand of people to high-grade cigarette pack.
Summary of the invention
In order to solve the problems referred to above that prior art exists, the object of this invention is to provide a kind of Biaxially oriented polypropylene shrink film for cigarette pack, its haze value is less than 0.85%, can meet the demand of people to high-grade cigarette pack.Second object of the present invention is to provide the preparation method of this Biaxially oriented polypropylene shrink film.3rd object of the present invention is to provide the application of this Biaxially oriented polypropylene shrink film.
Biaxially oriented polypropylene shrink film for cigarette pack of the present invention, its structure is divided into upper, middle and lower-ranking structure, gross thickness: 16 ~ 22 μm.Wherein, upper thickness is 0.8 ~ 1.2 μm, is mixed with by the raw material containing following weight content: 96 ~ 98.8% COPPs, 0.2 ~ 1% glass microballoon and 1 ~ 3% silicone; The thickness in intermediate layer is 14.4 ~ 19.6 μm, is mixed with by the raw material containing following weight content: 73 ~ 84% homo-polypropylenes, 1 ~ 2% ethoxylated amine and 15 ~ 25% Petropols; The thickness of lower floor is 0.8 ~ 1.2 μm, is mixed with by the raw material containing following weight content: 99 ~ 99.8% ternary polymerized polypropylene and 0.2 ~ 1% glass microballoon; Wherein, the particle diameter of glass microballoon is 1 ~ 7 μm, is preferably 2 ~ 4 μm; Petropols can be C5 or C9 Petropols.
The preparation method of the Biaxially oriented polypropylene shrink film for cigarette pack of the present invention, by preparing burden, extruding, slab, longitudinal stretching, cross directional stretch, rolling prepare, and wherein, the stretching ratio of longitudinal stretching operation is 520 ~ 550%; The stretching ratio of cross directional stretch operation is 800 ~ 1000%; The extruder temperature extruded in operation is 200 ~ 250 DEG C; Slab machine chilling temperature in slab operation is 18 ~ 28 DEG C; Preheat temperature in longitudinal stretching operation is 100 ~ 120 DEG C, draft temperature is 97 ~ 105 DEG C; Preheat temperature in cross directional stretch operation is 160 ~ 180 DEG C, draft temperature is 150 ~ 160 DEG C, setting temperature is 135 ~ 145 DEG C.
The detailed process of Biaxially oriented polypropylene shrink film preparation method of the present invention is:
(1) adopt biaxial tension equipment to implement, technological process is: → slab → longitudinal stretching → cross directional stretch → rolling of preparing burden → extrude.
(2) implementation step
1, prepare burden
Drop into different batch cans by the raw material of above-mentioned design, carry out batch mixing in the ratio of setting, batch mixing can manually batch mixing or equipment batch mixing.
2, extrude
Intermediate layer raw material flows into double screw extruder or singe screw tandem extruder after batch mixing, and upper and lower layered material flows into respective subsidiary extruder after batch mixing.Three layered materials flow out after die head converges.Extruder effect: melting, plasticizing, mixing, equal and quantitative are extruded.Extruder temperature: 200 ~ 250 DEG C.
3, slab
The effect of slab machine is that the resin that extruder die head flows out is cooled to sheet material, makes the size of the degree of crystallinity of resin, crystal habit, crystal reach perfect condition, thus improves the physical property of film, be conducive to the stretching of vertical and horizontal.Slab machine chilling temperature: 18 ~ 28 DEG C.
4, longitudinal stretching
The effect of longitudinal stretching is that the sheet material of coming from slab machine is carried out preheating, and under certain speed, is longitudinally elongated by sheet material, polymer molecule is carried out machine-direction oriented.For ensureing longitudinal contraction rate, the preheat temperature of longitudinal stretching and draft temperature are low as far as possible, and stretching ratio is high as far as possible, preheat temperature: 100 ~ 120 DEG C, draft temperature: 97 ~ 105 DEG C, stretching ratio: 500 ~ 550%;
5, cross directional stretch
To be the sheet material crossed by longitudinal stretching carry out cross directional stretch by the chain guide of setting there being the drawing zone of the larger angle of flare in cross directional stretch effect, makes polymer molecule at horizontal orientation equally.For ensureing lateral shrinkage, the preheat temperature of cross directional stretch and draft temperature are low as far as possible, but the too low problem easily occurring de-folder and rupture of membranes of temperature; Optimum Preheating Temperature: 160 ~ 180 DEG C, draft temperature: 150 ~ 160 DEG C, setting temperature: 135 ~ 145 DEG C.In order to keep internal stress, the stretching wide cut of shaping area can not be less than drawing zone.Stretching ratio contributes to greatly the raising of lateral shrinkage, but excessively also easily occurs rupture of membranes problem, best 800 ~ 1000%.
6, rolling
The horizontal film pulled out carries out rolling through winder again after trimming.Winding process is relevant with the performance of film, can follow according to rolling situation setting winding tension, attenuation rate, platen pressure adjustment, draw ratio 100 ± 2%.
The present invention is by selecting the glass microballoon with specified particle diameter scope to be antiblocking agent, and each for film layer thickness is controlled in certain limit, specific preparation technology is coordinated to prepare Biaxially oriented polypropylene shrink film, its haze value <0.85%, the demand of people to high-grade cigarette pack can be met, there is good thickness degree, appearance property and other physical property in addition.
Product representative value
Detailed description of the invention
Specific embodiment is described further Biaxially oriented polypropylene shrink film of the present invention and manufacture method thereof below.
Embodiment 1
Produce thickness 22 micron film.Batching: upper thickness 1.0 microns, wherein COPP content is 97.5%, the glass microballoon 0.5% that particle diameter is 2 μm, silicone 2%; Middle thickness 20 microns, wherein homo-polypropylene 79%, Petropols 20%, ethoxylated amine 1%; Lower thickness 1.0 microns, wherein COPP content is 99.5%, the glass microballoon 0.5% that particle diameter is 2 μm.
Masking: adopt biaxial tension co-extrusion technique to obtain packing cigarette Biaxially oriented polypropylene shrink film of the present invention, wherein extruder temperature: 220 DEG C; Slab machine temperature: 22 DEG C; Longitudinal stretching multiplying power: 530%, indulges and draws preheat temperature: 110 DEG C, indulges and draws draft temperature: 100 DEG C; Cross directional stretch multiplying power: 880%, horizontally draws preheat temperature: 173 DEG C, horizontally draws draft temperature: 155 DEG C, horizontally draws setting temperature: 140 DEG C; Rolling draw ratio: 100%.
Embodiment 2
Produce thickness 20 micron film.Batching: upper thickness 0.9 micron, wherein COPP content is 97.5%, the glass microballoon 1% that particle diameter is 2 μm, silicone 1.5%; Middle thickness 18.2 microns, wherein homo-polypropylene 80%, Petropols 18%, ethoxylated amine 2%; Lower thickness 0.9 micron, wherein COPP content is 99%, the glass microballoon 1% that particle diameter is 2 μm.
Masking: adopt biaxial tension co-extrusion technique to obtain packing cigarette Biaxially oriented polypropylene shrink film of the present invention, wherein extruder temperature: 230 DEG C; Slab machine temperature: 21 DEG C; Longitudinal stretching multiplying power: 510%, indulges and draws preheat temperature: 105 DEG C, indulges and draws draft temperature: 102 DEG C; Cross directional stretch multiplying power: 890%, horizontally draws preheat temperature: 175 DEG C, horizontally draws draft temperature: 157 DEG C, horizontally draws setting temperature: 138 DEG C; Rolling draw ratio: 100%.
Embodiment 3
Produce thickness 18 micron film.Batching: upper thickness 0.8 micron, wherein COPP content is 96.5%, the glass microballoon 1% that particle diameter is 3 μm, silicone 2.5%; Middle thickness 16.4 microns, wherein homo-polypropylene 75%, Petropols 23%, ethoxylated amine 2%; Lower thickness 0.8 micron, wherein COPP content is 99.5%, the glass microballoon 0.5% that particle diameter is 3 μm.
Masking: adopt biaxial tension co-extrusion technique to obtain packing cigarette Biaxially oriented polypropylene shrink film of the present invention, wherein extruder temperature: 235 DEG C; Slab machine temperature: 25 DEG C; Longitudinal stretching multiplying power: 535%, indulges and draws preheat temperature: 110 DEG C, indulges and draws draft temperature: 100 DEG C; Cross directional stretch multiplying power: 910%, horizontally draws preheat temperature: 175 DEG C, horizontally draws draft temperature: 155 DEG C, horizontally draws setting temperature: 140 DEG C; Rolling draw ratio: 100%.
Claims (3)
1. the Biaxially oriented polypropylene shrink film for cigarette pack, its structure is divided into upper, middle and lower-ranking structure, it is characterized in that, upper strata is mixed with by the raw material containing following weight content: 97.5% COPP, 0.5% glass microballoon and 2% silicone; Intermediate layer is mixed with by the raw material containing following weight content: 79% homo-polypropylene, 1% ethoxylated amine and 20% Petropols; Lower floor is mixed with by the raw material containing following weight content: 99.5% ternary polymerized polypropylene and 0.5% glass microballoon, and the particle diameter of described glass microballoon is 2 μm; The gross thickness of described shrink film is 22 μm; Wherein, upper thickness is 1.0 μm, and the thickness in intermediate layer is 20 μm, and the thickness of lower floor is 1.0 μm.
2. the preparation method of Biaxially oriented polypropylene shrink film according to claim 1, by preparing burden, extruding, slab, longitudinal stretching, cross directional stretch, rolling prepare, and it is characterized in that, the stretching ratio of described longitudinal stretching operation is 530%; The stretching ratio of described cross directional stretch operation is 880%.
3. the preparation method of Biaxially oriented polypropylene shrink film according to claim 2, is characterized in that, described in the extruder temperature extruded in operation be 220 DEG C; Slab machine chilling temperature in described slab operation is 22 DEG C; Preheat temperature in described longitudinal stretching operation is 110 DEG C, draft temperature is 100 DEG C; Preheat temperature in described cross directional stretch operation is 173 DEG C, draft temperature is 155 DEG C, setting temperature is 140 DEG C; Rolling draw ratio is 100%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210570229.XA CN103029396B (en) | 2012-12-25 | 2012-12-25 | Biaxially oriented polypropylene shrink film for cigarette packages and manufacturing method and application of shrink film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210570229.XA CN103029396B (en) | 2012-12-25 | 2012-12-25 | Biaxially oriented polypropylene shrink film for cigarette packages and manufacturing method and application of shrink film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103029396A CN103029396A (en) | 2013-04-10 |
| CN103029396B true CN103029396B (en) | 2015-05-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210570229.XA Active CN103029396B (en) | 2012-12-25 | 2012-12-25 | Biaxially oriented polypropylene shrink film for cigarette packages and manufacturing method and application of shrink film |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107042671A (en) * | 2017-03-29 | 2017-08-15 | 湛江包装材料企业有限公司 | Heat resistant and wear resistant type cigarette BOPP film and preparation method thereof |
| CN109280273B (en) * | 2018-10-29 | 2020-03-27 | 上海若祎新材料科技有限公司 | High melt strength polypropylene film compositions and films and uses thereof |
| CN110356085B (en) * | 2019-07-11 | 2020-10-30 | 海南赛诺实业有限公司 | Three-layer co-extrusion strip-wrapped naked-wrapped polypropylene film and manufacturing method thereof |
| CN110356084B (en) * | 2019-07-11 | 2020-10-30 | 海南赛诺实业有限公司 | Low-haze three-layer co-extrusion strip-wrapped naked-wrapped polypropylene film and manufacturing method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101265349A (en) * | 2008-04-10 | 2008-09-17 | 王锦江 | Inorganic anti-sticking master batch used for BOPP thin film and producing technique thereof |
| CN102795012A (en) * | 2012-08-14 | 2012-11-28 | 海南赛诺实业有限公司 | Holographic mold-pressing contraction substrate film and manufacturing method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5032106B2 (en) * | 2006-12-20 | 2012-09-26 | 北越紀州製紙株式会社 | Method for producing cellulose fiber-containing molded body |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101265349A (en) * | 2008-04-10 | 2008-09-17 | 王锦江 | Inorganic anti-sticking master batch used for BOPP thin film and producing technique thereof |
| CN102795012A (en) * | 2012-08-14 | 2012-11-28 | 海南赛诺实业有限公司 | Holographic mold-pressing contraction substrate film and manufacturing method thereof |
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| CN103029396A (en) | 2013-04-10 |
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Address after: 571152, No. 18, North Light Road, Lion Industrial Park, Haikou national hi tech Zone, Hainan Applicant after: Hai'nan Sainuo Industry Co., Ltd. Address before: 570125 Hainan city in Haikou Province, North Longkun Road No. 2 Park building 19 floor Applicant before: Hai'nan Sainuo Industry Co., Ltd. |
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Denomination of invention: Biaxially oriented polypropylene shrink film for cigarette packages and manufacturing method and application of shrink film Effective date of registration: 20181225 Granted publication date: 20150506 Pledgee: China Construction Bank Co., Ltd. Haikou Daying Shan Branch Pledgor: Hai'nan Sainuo Industry Co., Ltd. Registration number: 2018460000012 |
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Date of cancellation: 20190213 Granted publication date: 20150506 Pledgee: China Construction Bank Co., Ltd. Haikou Daying Shan Branch Pledgor: Hai'nan Sainuo Industry Co., Ltd. Registration number: 2018460000012 |
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Denomination of invention: Biaxially oriented polypropylene shrink film for cigarette packages and manufacturing method and application of shrink film Effective date of registration: 20190702 Granted publication date: 20150506 Pledgee: China Construction Bank Co., Ltd. Haikou Daying Shan Branch Pledgor: Hai'nan Sainuo Industry Co., Ltd. Registration number: 2019460000008 |
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Date of cancellation: 20201201 Granted publication date: 20150506 Pledgee: China Construction Bank Co.,Ltd. Haikou Daying Shan Branch Pledgor: HAINAN SHINER INDUSTRIAL Co.,Ltd. Registration number: 2019460000008 |
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