CN111231465A - Double-sided heat-sealable matte BOPP film - Google Patents
Double-sided heat-sealable matte BOPP film Download PDFInfo
- Publication number
- CN111231465A CN111231465A CN201910223927.4A CN201910223927A CN111231465A CN 111231465 A CN111231465 A CN 111231465A CN 201910223927 A CN201910223927 A CN 201910223927A CN 111231465 A CN111231465 A CN 111231465A
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- China
- Prior art keywords
- surface layer
- core layer
- layer
- double
- polypropylene
- Prior art date
- 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.)
- Pending
Links
- 229920006378 biaxially oriented polypropylene Polymers 0.000 title claims abstract description 39
- 239000011127 biaxially oriented polypropylene Substances 0.000 title claims abstract description 39
- 239000002344 surface layer Substances 0.000 claims abstract description 87
- 239000012792 core layer Substances 0.000 claims abstract description 71
- 239000004743 Polypropylene Substances 0.000 claims abstract description 38
- 229920001155 polypropylene Polymers 0.000 claims abstract description 38
- -1 polypropylene Polymers 0.000 claims abstract description 36
- 229920000098 polyolefin Polymers 0.000 claims abstract description 17
- 238000001125 extrusion Methods 0.000 claims abstract description 9
- 229920005629 polypropylene homopolymer Polymers 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 8
- 239000010410 layer Substances 0.000 claims 3
- 238000007789 sealing Methods 0.000 description 5
- 241000209094 Oryza Species 0.000 description 3
- 235000007164 Oryza sativa Nutrition 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- 235000009566 rice Nutrition 0.000 description 3
- 238000004806 packaging method and process Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920006280 packaging film Polymers 0.000 description 1
- 239000012785 packaging film Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229920006027 ternary co-polymer Polymers 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/38—Packaging materials of special type or form
- B65D65/40—Applications of laminates for particular packaging purposes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/31—Heat sealable
Abstract
The invention discloses a double-sided heat-sealable matte BOPP film which comprises an upper surface layer, a core layer A, a core layer B and a lower surface layer, wherein the upper surface layer, the core layer A, the core layer B and the lower surface layer are formed by co-extrusion and then biaxial stretching, the upper surface layer and the lower surface layer are made of polypropylene, the core layer A is made of α -polyolefin, and the core layer B is made of homopolypropylene.
Description
Technical Field
The invention relates to the technical field of BOPP films, in particular to a double-sided heat-sealable matte BOPP film.
Background
The existing biaxially oriented polypropylene film is divided into a single-sided heat-seal type and a double-sided heat-seal type, and further, the existing biaxially oriented polypropylene film only comprises a single-sided heat-seal matte BOPP film and a double-sided heat-seal transparent BOPP film.
With the economic development and the improvement of the living standard of people, the packaging bags of some commodities in the market of terminal consumer goods need to be made of BOPP films with double-sided heat sealing and matt surfaces, but the existing biaxially oriented polypropylene films cannot meet the market demands, so that the development of the BOPP films with double-sided heat sealing and matt surfaces is urgently needed.
Disclosure of Invention
The invention aims to overcome the defects, provides the double-sided heat-sealable matte BOPP film which is reasonable in structural design and good in mechanical property, meets the market demand on the BOPP film which can be subjected to double-sided heat sealing and is provided with matte, and increases the market competitiveness of the product.
In order to achieve the purpose, the invention provides the following technical scheme that the double-sided heat-sealable matte BOPP film is composed of an upper surface layer, a core layer A, a core layer B and a lower surface layer, wherein the upper surface layer, the core layer A, the core layer B and the lower surface layer are formed by co-extrusion and then biaxial stretching, the upper surface layer and the lower surface layer are made of polypropylene, the core layer A is made of α -polyolefin, and the core layer B is made of homopolymerized polypropylene.
Furthermore, the materials of the upper surface layer and the lower surface layer are both composed of binary copolymer polypropylene andor ternary copolymer polypropylene.
Further, the material of the upper surface layer and the lower surface layer is made of polypropylene with the model number of FS5612 and/or polypropylene with the model number of F5006.
Further, the α -polyolefin is one of model 8505E and SH 5205.
Further, the homopolypropylene is one of T36F and F280.
Further, the thicknesses of the upper surface layer, the core layer A and the lower surface layer are all 0.5-1.5 μm.
The thickness of the core layer B is determined according to the total thickness of the double-sided heat-sealable matte BOPP film required by a user, and the thickness of the core layer B is equal to the value obtained by subtracting the thicknesses of the upper surface layer, the core layer A and the lower surface layer from the total thickness of the double-sided heat-sealable matte BOPP film required by the user.
Compared with the prior art, the invention has the beneficial effects that: the BOPP film has reasonable structural design and good mechanical property, meets the market demand on the BOPP film which can be subjected to double-sided heat sealing and is provided with a matte film, and increases the market competitiveness of the product.
Detailed Description
The present invention will be further described below in order to make the technical means, inventive features, objectives and effects of the invention easy to understand.
Example 1
A double-sided heat-sealable matte BOPP film is composed of an upper surface layer, a core layer A, a core layer B and a lower surface layer, wherein the upper surface layer, the core layer A, the core layer B and the lower surface layer are formed by co-extrusion and then biaxial stretching, the upper surface layer and the lower surface layer are made of polypropylene, the core layer A is made of α -polyolefin, and the core layer B is made of homopolymerized polypropylene.
Wherein the upper and lower surface layers are made of polypropylene with model number FS5612
Wherein the model of α -polyolefin is 8505E.
Wherein the model of the homopolymerized polypropylene is T36F.
Wherein the thicknesses of the upper surface layer, the core layer A and the lower surface layer are all 1 mu m.
The thickness of the core layer B was 22 μm.
Example 2
A double-sided heat-sealable matte BOPP film is composed of an upper surface layer, a core layer A, a core layer B and a lower surface layer, wherein the upper surface layer, the core layer A, the core layer B and the lower surface layer are formed by co-extrusion and then biaxial stretching, the upper surface layer and the lower surface layer are made of polypropylene, the core layer A is made of α -polyolefin, and the core layer B is made of homopolymerized polypropylene.
Wherein, the materials of the upper surface layer and the lower surface layer are both composed of polypropylene with the model number of FS5612 and polypropylene with the model number of F5006.
Wherein the model of α -polyolefin is 8505E.
Wherein the model of the homopolymerized polypropylene is T36F.
Wherein the thicknesses of the upper surface layer, the core layer A and the lower surface layer are all 1 mu m.
The thickness of the core layer B was 22 μm.
Example 3
A double-sided heat-sealable matte BOPP film is composed of an upper surface layer, a core layer A, a core layer B and a lower surface layer, wherein the upper surface layer, the core layer A, the core layer B and the lower surface layer are formed by co-extrusion and then biaxial stretching, the upper surface layer and the lower surface layer are made of polypropylene, the core layer A is made of α -polyolefin, and the core layer B is made of homopolymerized polypropylene.
Wherein the model of the material of the upper surface layer and the lower surface layer is F5006 polypropylene.
Wherein the model of α -polyolefin is 8505E.
Wherein the model of the homopolymerized polypropylene is T36F.
Wherein the thicknesses of the upper surface layer, the core layer A and the lower surface layer are all 1 mu m.
The thickness of the core layer B was 22 μm.
Example 4
A double-sided heat-sealable matte BOPP film is composed of an upper surface layer, a core layer A, a core layer B and a lower surface layer, wherein the upper surface layer, the core layer A, the core layer B and the lower surface layer are formed by co-extrusion and then biaxial stretching, the upper surface layer and the lower surface layer are made of polypropylene, the core layer A is made of α -polyolefin, and the core layer B is made of homopolymerized polypropylene.
Wherein, the upper surface layer and the lower surface layer are both made of polypropylene with the model number of FS 5612.
Wherein the model of α -polyolefin is SH 5205.
Wherein the model of the homopolymerized polypropylene is F280.
Wherein the thicknesses of the upper surface layer, the core layer A and the lower surface layer are all 1 mu m.
The thickness of the core layer B was 22 μm.
Example 5
A double-sided heat-sealable matte BOPP film is composed of an upper surface layer, a core layer A, a core layer B and a lower surface layer, wherein the upper surface layer, the core layer A, the core layer B and the lower surface layer are formed by co-extrusion and then biaxial stretching, the upper surface layer and the lower surface layer are made of polypropylene, the core layer A is made of α -polyolefin, and the core layer B is made of homopolymerized polypropylene.
Wherein, the upper surface layer and the lower surface layer are made of polypropylene with the model of F5006.
Wherein the model of α -polyolefin is SH 5205.
Wherein the model of the homopolymerized polypropylene is F280.
Wherein the thicknesses of the upper surface layer, the core layer A and the lower surface layer are all 1 mu m.
The thickness of the core layer B was 22 μm.
Example 6
A double-sided heat-sealable matte BOPP film is composed of an upper surface layer, a core layer A, a core layer B and a lower surface layer, wherein the upper surface layer, the core layer A, the core layer B and the lower surface layer are formed by co-extrusion and then biaxial stretching, the upper surface layer and the lower surface layer are made of polypropylene, the core layer A is made of α -polyolefin, and the core layer B is made of homopolymerized polypropylene.
Wherein, the materials of the upper surface layer and the lower surface layer are both composed of polypropylene with the model number of FS5612 and polypropylene with the model number of F5006.
Wherein the model of α -polyolefin is SH 5205.
Wherein the model of the homopolymerized polypropylene is F280.
Wherein the thicknesses of the upper surface layer, the core layer A and the lower surface layer are all 1 mu m.
The thickness of the core layer B was 22 μm.
The physical properties of the double-sided heat-sealable matte BOPP film in this example were tested, and the physical property test results show that the double-sided heat-sealable matte BOPP film in this example has a longitudinal tensile strength of 125MPa, a transverse tensile strength of 260MPa, a longitudinal elongation at break of 165%, a transverse elongation at break of 45%, a longitudinal heat shrinkage of 3.2%, a transverse heat shrinkage of 1.5%, a longitudinal friction coefficient of 0.35Us/ud, a transverse friction coefficient of 0.35Us/ud, a heat-seal strength of 3N/15mm, a haze of 76%, and a gloss of 10.5%.
Test example 1
The effect pair of the double-sided heat-sealable matte BOPP film in example 5 and the double-sided heat-sealable BOPP film currently on the market after being used in a rice ball wrapping film are shown in table 1.
TABLE 1 comparison of the effect of the double-sided heat-sealable matte BOPP film after being used in the rice ball packaging film with the existing double-sided heat-sealable BOPP film in the market
| Contrast item | Products produced by using the formula | Other transparent double-sided heat-sealable materials |
| Fastness to heat sealing of rice ball | Good taste | Good taste |
| Appearance of the product | Matte finish | Is transparent |
| Speed of packaging | Fast-acting toy | Fast-acting toy |
| Customer acceptance | Good taste | In general |
Test example 2
The physical property test results of the double-sided heat-sealable matte BOPP film with the thickness of 25 μm in the embodiments 1 to 6 show that the double-sided heat-sealable matte BOPP film has the longitudinal tensile strength of 115 to 135MPa, the transverse tensile strength of 230 to 280MPa, the longitudinal elongation at break of 120 to 180 percent, the transverse elongation at break of 30 to 55 percent, the longitudinal heat shrinkage of 2.5 to 3.5 percent, the transverse heat shrinkage of 0.8 to 2 percent, the longitudinal friction coefficient of 0.25 to 0.4Us/ud, the transverse friction coefficient of 0.25 to 0.4Us/ud, the heat-sealable strength of 2.5 to 3.5N/15mm, the haze of 65 to 85 percent and the glossiness of 8 to 12 percent.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A double-sided heat-sealable matte BOPP film is characterized by comprising an upper surface layer, a core layer A, a core layer B and a lower surface layer, wherein the upper surface layer, the core layer A, the core layer B and the lower surface layer are formed by co-extrusion and then biaxial stretching, the upper surface layer and the lower surface layer are made of polypropylene, the core layer A is made of α -polyolefin, and the core layer B is made of homopolymerized polypropylene.
2. The double-sided heat-sealable matte BOPP film according to claim 1, wherein the materials of the upper surface layer and the lower surface layer are both composed of binary co-polypropylene and/or ternary co-polypropylene.
3. A double sided heat sealable matte BOPP film according to claim 1 wherein the material of said upper and said lower skin layers is selected from the group consisting of polypropylene type FS5612 and F5006 type.
4. A double sided heat sealable matte BOPP film according to claim 1, wherein said α -polyolefin is one of type 8505E and SH 5205.
5. A double sided heat sealable matte BOPP film according to claim 1 wherein said homopolypropylene is one of T36F and F280.
6. The double-sided, heat-sealable matte BOPP film according to claim 1, wherein the thicknesses of the upper skin layer, the core layer a and the lower skin layer are all 0.5 to 1.5 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910223927.4A CN111231465A (en) | 2019-03-22 | 2019-03-22 | Double-sided heat-sealable matte BOPP film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910223927.4A CN111231465A (en) | 2019-03-22 | 2019-03-22 | Double-sided heat-sealable matte BOPP film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111231465A true CN111231465A (en) | 2020-06-05 |
Family
ID=70879334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910223927.4A Pending CN111231465A (en) | 2019-03-22 | 2019-03-22 | Double-sided heat-sealable matte BOPP film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111231465A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102941719A (en) * | 2012-10-25 | 2013-02-27 | 海南赛诺实业有限公司 | High oxygen barrier biaxially oriented polypropylene film and preparation method thereof |
| CN207432941U (en) * | 2017-07-25 | 2018-06-01 | 凯威塑胶工业有限公司 | Super cool sliding two-sided heat-sealing type bidirectional stretching polypropylene film |
-
2019
- 2019-03-22 CN CN201910223927.4A patent/CN111231465A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102941719A (en) * | 2012-10-25 | 2013-02-27 | 海南赛诺实业有限公司 | High oxygen barrier biaxially oriented polypropylene film and preparation method thereof |
| CN207432941U (en) * | 2017-07-25 | 2018-06-01 | 凯威塑胶工业有限公司 | Super cool sliding two-sided heat-sealing type bidirectional stretching polypropylene film |
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| PB01 | Publication | ||
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Application publication date: 20200605 |