CN116604905A - Extinction type pearlescent color heat-sealing BOPP film and preparation method thereof - Google Patents
Extinction type pearlescent color heat-sealing BOPP film and preparation method thereof Download PDFInfo
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- CN116604905A CN116604905A CN202310510141.7A CN202310510141A CN116604905A CN 116604905 A CN116604905 A CN 116604905A CN 202310510141 A CN202310510141 A CN 202310510141A CN 116604905 A CN116604905 A CN 116604905A
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- 230000008033 biological extinction Effects 0.000 title claims abstract description 98
- 239000011127 biaxially oriented polypropylene Substances 0.000 title claims abstract description 47
- 229920006378 biaxially oriented polypropylene Polymers 0.000 title claims abstract description 47
- 238000007789 sealing Methods 0.000 title claims abstract description 33
- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- 239000010410 layer Substances 0.000 claims abstract description 118
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 82
- 239000002994 raw material Substances 0.000 claims abstract description 51
- 239000004594 Masterbatch (MB) Substances 0.000 claims abstract description 50
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 41
- 239000004743 Polypropylene Substances 0.000 claims abstract description 29
- -1 polypropylene Polymers 0.000 claims abstract description 29
- 229920001155 polypropylene Polymers 0.000 claims abstract description 29
- 239000012792 core layer Substances 0.000 claims abstract description 26
- FZHAPNGMFPVSLP-UHFFFAOYSA-N silanamine Chemical compound [SiH3]N FZHAPNGMFPVSLP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 150000008064 anhydrides Chemical class 0.000 claims abstract description 18
- 229920000092 linear low density polyethylene Polymers 0.000 claims abstract description 18
- 239000004707 linear low-density polyethylene Substances 0.000 claims abstract description 18
- 239000011347 resin Substances 0.000 claims abstract description 18
- 229920005989 resin Polymers 0.000 claims abstract description 18
- 239000007822 coupling agent Substances 0.000 claims abstract description 15
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 8
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 8
- 239000002216 antistatic agent Substances 0.000 claims abstract description 5
- 239000000314 lubricant Substances 0.000 claims abstract description 5
- 239000004595 color masterbatch Substances 0.000 claims abstract description 3
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 18
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 14
- 239000012793 heat-sealing layer Substances 0.000 claims description 14
- RYYKJJJTJZKILX-UHFFFAOYSA-M sodium octadecanoate Chemical compound [Na+].CCCCCCCCCCCCCCCCCC([O-])=O RYYKJJJTJZKILX-UHFFFAOYSA-M 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 11
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical group CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 claims description 9
- 239000002981 blocking agent Substances 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 8
- LDVVTQMJQSCDMK-UHFFFAOYSA-N 1,3-dihydroxypropan-2-yl formate Chemical group OCC(CO)OC=O LDVVTQMJQSCDMK-UHFFFAOYSA-N 0.000 claims description 7
- 239000000377 silicon dioxide Substances 0.000 claims description 7
- 238000007493 shaping process Methods 0.000 claims description 6
- 238000005507 spraying Methods 0.000 claims description 6
- 238000001125 extrusion Methods 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 claims description 3
- JKIJEFPNVSHHEI-UHFFFAOYSA-N Phenol, 2,4-bis(1,1-dimethylethyl)-, phosphite (3:1) Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP(OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC1=CC=C(C(C)(C)C)C=C1C(C)(C)C JKIJEFPNVSHHEI-UHFFFAOYSA-N 0.000 claims description 2
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims description 2
- 235000013539 calcium stearate Nutrition 0.000 claims description 2
- 239000008116 calcium stearate Substances 0.000 claims description 2
- 239000011521 glass Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims description 2
- 239000011324 bead Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 11
- 239000003795 chemical substances by application Substances 0.000 abstract description 2
- 238000003672 processing method Methods 0.000 abstract description 2
- 229920003313 Bynel® Polymers 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 235000012239 silicon dioxide Nutrition 0.000 description 4
- 239000011229 interlayer Substances 0.000 description 3
- 239000002346 layers by function Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 229920006280 packaging film Polymers 0.000 description 3
- 239000012785 packaging film Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 125000003277 amino group Chemical group 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 150000008065 acid anhydrides Chemical class 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000011325 microbead Substances 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- 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
- B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
- B29C69/02—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore of moulding techniques only
-
- 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
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
- B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- 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
- B32B2307/40—Properties of the layers or laminate having particular optical properties
- B32B2307/402—Coloured
- B32B2307/404—Multi-coloured
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/10—Homopolymers or copolymers of propene
- C08J2323/12—Polypropene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/08—Copolymers of ethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
- C08K9/06—Ingredients treated with organic substances with silicon-containing compounds
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Laminated Bodies (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The application discloses a extinction type pearlescent color heat-seal BOPP film and a preparation method thereof, wherein the BOPP film sequentially comprises a first extinction layer, a second extinction layer, a core layer, a color layer and a heat-seal layer; the raw material of the first extinction layer is extinction master batch; the second extinction layer is made of the following raw materials: matting masterbatch, anhydride modified LLDPE resin; the core layer is made of the following raw materials: pearlescent masterbatch, antistatic agent and polypropylene; the pearlescent master batch is prepared from the following raw materials: an aminosilane coupling agent modified heavy calcium carbonate, an antioxidant, a lubricant and polypropylene; the color layer is made of the following raw materials: color masterbatch, anhydride modified LLDPE resin, polypropylene; the heat seal layer is prepared from the following raw materials: heat-sealing master batch and antiblocking agent. The BOPP film has the appearance effects of extinction, pearlescence and color and good heat sealing property, has high heat sealing strength, simple processing method and good market prospect.
Description
Technical Field
The application relates to the technical field of functional films, in particular to a extinction type pearlescent color heat-sealing BOPP film and a preparation method thereof.
Background
With the diversification of packaging materials and the popularization of packaging films, the requirements of the market on the performance of the packaging films are continuously improved. BOPP packaging films with a variety of different appearance effects such as matt, glossy, pearlescent, colored, etc. are increasingly coming into the line of sight of people. The extinction film has the characteristics of low gloss and high haze, and the surface of the film has very low gloss and natural color. The pearlescent film has pearlescent color and soft texture, excellent gas barrier property, water resistance and light resistance, and good light-proof protection effect on packaging products. The color film has the characteristics of attractive appearance and various colors, and can greatly improve and enrich the appearance effect of the film. Currently, BOPP films for packaging also have relatively single appearance characteristics, typically only one or two. Moreover, since the heat sealing performance of BOPP films is also critical, the types of BOPP films that have been on the market to combine the appearance effect with the heat sealing performance are small, and only matt heat sealing films, pearlescent heat sealing films, and the like. The film has various appearance effects combined with heat sealing performance, is favorable for further improving the appearance quality and the application popularization range of the BOPP film, and has good market application potential.
Disclosure of Invention
Based on the technical problems in the background technology, the application provides a extinction type pearlescent color heat-sealing BOPP film and a preparation method thereof.
The application provides a extinction type pearlescent color heat-sealing BOPP film, which sequentially comprises a first extinction layer, a second extinction layer, a core layer, a color layer and a heat-sealing layer;
the raw material of the first extinction layer is extinction master batch;
the second extinction layer is prepared from the following raw materials in percentage by mass: 90-95% of extinction master batch and 5-10% of anhydride modified LLDPE resin;
the core layer is prepared from the following raw materials in percentage by mass: 15-20% of pearlescent master batch, 1-3% of antistatic agent and the balance of polypropylene; the pearlescent master batch is prepared from the following raw materials in percentage by mass: 65-75% of amino silane coupling agent modified heavy calcium carbonate, 1-2% of antioxidant, 0.5-1% of lubricant and the balance of polypropylene;
the color layer is prepared from the following raw materials in percentage by mass: 0.5 to 10 percent of color masterbatch, 5 to 10 percent of anhydride modified LLDPE resin and the balance of polypropylene;
the heat sealing layer is prepared from the following raw materials in percentage by mass: 97-98% of heat-sealing master batch and 2-3% of anti-blocking agent.
Preferably, the preparation method of the aminosilane coupling agent modified heavy calcium carbonate comprises the following steps: spraying an aminosilane coupling agent on the surface of heavy calcium carbonate, and mixing for 50-90 min at 90-120 ℃ to obtain the calcium carbonate; the mass ratio of the heavy calcium carbonate to the aminosilane coupling agent is 100: (4-10); the aminosilane coupling agent is at least one of KH-550, KH-602 and KH-792.
Preferably, the antioxidant is antioxidant 1010, antioxidant 168, or a combination thereof; the lubricant is at least one of sodium stearate, zinc stearate and calcium stearate.
Preferably, the antistatic agent is monoglyceride.
Preferably, the anti-blocking agent is silica, glass microbeads, or a combination thereof.
Preferably, the total thickness of the extinction type pearlescent color heat-sealing BOPP film is 30-60 mu m, the thickness of the first extinction layer is 2-3 mu m, the thickness of the second extinction layer is 0.5-2 mu m, the thickness of the color layer is 1-3 mu m, and the thickness of the heat-sealing layer is 1-2 mu m.
The preparation method of the extinction type pearlescent color heat-sealing BOPP film comprises the following steps:
s1, respectively carrying out melt extrusion on raw materials of a first extinction layer, a second extinction layer, a core layer, a color layer and a heat seal layer to obtain a first extinction layer melt, a second extinction layer melt, a core layer melt, a color layer melt and a heat seal layer melt, carrying out coextrusion through a five-layer structure die head, and cooling and solidifying through a chilling roller to form a thick sheet;
and S2, sequentially stretching the thick sheet longitudinally and transversely, and then cooling and rolling to obtain the extinction type pearlescent color heat-sealing BOPP film.
Preferably, in S1, the cooling temperature of the chilled roller is 30-35 ℃.
Preferably, in S2, the preheating temperature of the longitudinal stretching is 110-120 ℃, the stretching temperature is 90-100 ℃, the stretching multiplying power is 4.8-5.0, and the shaping temperature is 100-110 ℃.
Preferably, in S2, the preheating temperature of the transverse stretching is 160-170 ℃, the stretching temperature is 145-155 ℃, the stretching multiplying power is 8-9, and the shaping temperature is 155-165 ℃.
The beneficial effects of the application are as follows:
according to the application, the first extinction layer, the second extinction layer, the core layer (the pearl layer), the color layer and the heat seal layer are sequentially arranged, so that the BOPP film has excellent heat sealing performance and the appearance characteristics of extinction, pearl and color multiple effects, and by adding a proper amount of anhydride modified LLDPE resin into the second extinction layer and the color layer as an adhesive and carrying out surface modification on the pearl active ingredient heavy calcium carbonate in the core layer (the pearl layer) by an aminosilane coupling agent, the heavy calcium carbonate in the core layer (the pearl layer) is uniformly dispersed in the core layer in the process of melt extrusion and stretching film forming, and the binding force between the amino group and the anhydride modified LLDPE resin in the second extinction layer and the color layer can be enhanced, so that the functional layer compounding of various different components and effects is relieved, the problem of easy stripping between functional layers caused by low binding force between the functional layers is solved, and the excellent heat sealing performance of the BOPP film is well ensured while the unique appearance effect of the BOPP film is endowed. The BOPP film disclosed by the application has the advantages of vivid color, soft color, fine pearl effect, unique appearance effect, good heat sealing property, high heat sealing strength, simple processing method and good market prospect.
Detailed Description
The technical scheme of the application is described in detail through specific embodiments.
Example 1
A extinction type pearlescent color heat-seal BOPP film sequentially comprises a first extinction layer, a second extinction layer, a core layer, a color layer and a heat-seal layer;
the raw material of the first extinction layer is Deguan D6612 extinction master batch;
the second extinction layer is prepared from the following raw materials in percentage by mass: 92% of Decrown D6612 matting masterbatch and 8% of Bynel 41E710 anhydride modified LLDPE resin;
the core layer is prepared from the following raw materials in percentage by mass: 16% of pearlescent master batch, 2% of monoglyceride and the balance of polypropylene; the pearlescent master batch is prepared from the following raw materials in percentage by mass: 70% of amino silane coupling agent modified heavy calcium carbonate, 1.5% of antioxidant 1010, 0.8% of sodium stearate and the balance of polypropylene; the preparation method of the pearlescent master batch comprises the following steps: mixing the amino silane coupling agent modified heavy calcium carbonate, the antioxidant 1010, the sodium stearate and the polypropylene, adding the mixture into a double-screw extruder, and extruding and granulating at 190-230 ℃ to obtain the modified heavy calcium carbonate; the preparation method of the aminosilane coupling agent modified heavy calcium carbonate comprises the following steps: spraying a silane coupling agent KH-550 on the surface of heavy calcium carbonate, and mixing at 100 ℃ for 60min, wherein the mass ratio of the heavy calcium carbonate to the silane coupling agent KH-550 is 100:6, preparing a base material;
the color layer is prepared from the following raw materials in percentage by mass: 3% of green master batch, 7% of anhydride modified LLDPE resin and the balance of polypropylene;
the heat sealing layer is prepared from the following raw materials in percentage by mass: 97.5 percent of COSMPLENE FS5612 heat-sealing master batch and 2.5 percent of silicon dioxide anti-blocking agent.
Wherein the total thickness of the BOPP film is 50 μm, the thickness of the first extinction layer is 2.3 μm, the thickness of the second extinction layer is 1 μm, the thickness of the color layer is 2 μm, and the thickness of the heat sealing layer is 1.5 μm.
The preparation method of the extinction type pearlescent color heat-sealing BOPP film comprises the following steps:
s1, respectively carrying out melt extrusion on raw materials of a first extinction layer, a second extinction layer, a core layer, a color layer and a heat seal layer to obtain a first extinction layer melt, a second extinction layer melt, a core layer melt, a color layer melt and a heat seal layer melt, carrying out coextrusion through a five-layer structure die head, and cooling and solidifying at 30-35 ℃ by using a chilling roller to form a thick sheet;
s2, sequentially carrying out longitudinal stretching and transverse stretching on the thick sheet, then cooling and rolling to obtain a extinction type pearlescent color heat-sealing BOPP film, wherein the preheating temperature of the longitudinal stretching is 110-120 ℃, the stretching temperature is 90-100 ℃, the stretching multiplying power is 4.8-5.0, and the shaping temperature is 100-110 ℃; the preheating temperature of transverse stretching is 160-170 ℃, the stretching temperature is 145-155 ℃, the stretching multiplying power is 8-9, and the shaping temperature is 155-165 ℃.
Example 2
A extinction type pearlescent color heat-seal BOPP film sequentially comprises a first extinction layer, a second extinction layer, a core layer, a color layer and a heat-seal layer;
the raw material of the first extinction layer is Deguan D6612 extinction master batch;
the second extinction layer is prepared from the following raw materials in percentage by mass: 90% of Decrown D6612 matting masterbatch and 10% of Bynel 41E710 anhydride modified LLDPE resin;
the core layer is prepared from the following raw materials in percentage by mass: 15% of pearlescent master batch, 1% of monoglyceride and the balance of polypropylene; the pearlescent master batch is prepared from the following raw materials in percentage by mass: 65% of amino silane coupling agent modified heavy calcium carbonate, 1010% of antioxidant, 0.5% of sodium stearate and the balance of polypropylene; the preparation method of the pearlescent master batch comprises the following steps: mixing the amino silane coupling agent modified heavy calcium carbonate, the antioxidant 1010, the sodium stearate and the polypropylene, adding the mixture into a double-screw extruder, and extruding and granulating at 190-230 ℃ to obtain the modified heavy calcium carbonate; the preparation method of the aminosilane coupling agent modified heavy calcium carbonate comprises the following steps: spraying a silane coupling agent KH-550 on the surface of heavy calcium carbonate, and mixing for 50min at 90 ℃, wherein the mass ratio of the heavy calcium carbonate to the silane coupling agent KH-550 is 100:4, a step of;
the color layer is prepared from the following raw materials in percentage by mass: 0.5% of green masterbatch, 5% of anhydride modified LLDPE resin and the balance of polypropylene;
the heat sealing layer is prepared from the following raw materials in percentage by mass: COSMOPLENE FS5612 heat seal masterbatch 97%, silica antiblocking agent 3%.
Wherein the total thickness of the BOPP film is 50 μm, the thickness of the first extinction layer is 2.3 μm, the thickness of the second extinction layer is 1 μm, the thickness of the color layer is 2 μm, and the thickness of the heat sealing layer is 1.5 μm.
The preparation method of the extinction type pearlescent color heat-sealing BOPP film is the same as that of example 1.
Example 3
A extinction type pearlescent color heat-seal BOPP film sequentially comprises a first extinction layer, a second extinction layer, a core layer, a color layer and a heat-seal layer;
the raw material of the first extinction layer is Deguan D6612 extinction master batch;
the second extinction layer is prepared from the following raw materials in percentage by mass: 95% of Deguan D6612 matting masterbatch and 5% of Bynel 41E710 anhydride modified LLDPE resin;
the core layer is prepared from the following raw materials in percentage by mass: 20% of pearlescent master batch, 3% of monoglyceride and the balance of polypropylene; the pearlescent master batch is prepared from the following raw materials in percentage by mass: 75% of amino silane coupling agent modified heavy calcium carbonate, 1010% of antioxidant, 1% of sodium stearate and the balance of polypropylene; the preparation method of the pearlescent master batch comprises the following steps: mixing the amino silane coupling agent modified heavy calcium carbonate, the antioxidant 1010, the sodium stearate and the polypropylene, adding the mixture into a double-screw extruder, and extruding and granulating at 190-230 ℃ to obtain the modified heavy calcium carbonate; the preparation method of the aminosilane coupling agent modified heavy calcium carbonate comprises the following steps: spraying a silane coupling agent KH-550 on the surface of heavy calcium carbonate, and mixing for 50min at 120 ℃, wherein the mass ratio of the heavy calcium carbonate to the silane coupling agent KH-550 is 100:10;
the color layer is prepared from the following raw materials in percentage by mass: 5% of green master batch, 10% of anhydride modified LLDPE resin and the balance of polypropylene;
the heat sealing layer is prepared from the following raw materials in percentage by mass: 98% of the heat-seal masterbatch of COSMPLENE FS5612 and 2% of the silicon dioxide anti-blocking agent.
Wherein the total thickness of the BOPP film is 50 μm, the thickness of the first extinction layer is 2.3 μm, the thickness of the second extinction layer is 1 μm, the thickness of the color layer is 2 μm, and the thickness of the heat sealing layer is 1.5 μm.
The preparation method of the extinction type pearlescent color heat-sealing BOPP film is the same as that of example 1.
Comparative example 1
A extinction type pearlescent color heat-seal BOPP film sequentially comprises a first extinction layer, a second extinction layer, a core layer, a color layer and a heat-seal layer;
the raw material of the first extinction layer is Deguan D6612 extinction master batch;
the raw material of the second extinction layer is Deguan D6612 extinction master batch;
the core layer is prepared from the following raw materials in percentage by mass: 16% of pearlescent master batch, 2% of monoglyceride and the balance of polypropylene; the pearlescent master batch is prepared from the following raw materials in percentage by mass: 70% of amino silane coupling agent modified heavy calcium carbonate, 1.5% of antioxidant 1010, 0.8% of sodium stearate and the balance of polypropylene; the preparation method of the pearlescent master batch comprises the following steps: mixing the amino silane coupling agent modified heavy calcium carbonate, the antioxidant 1010, the sodium stearate and the polypropylene, adding the mixture into a double-screw extruder, and extruding and granulating at 190-230 ℃ to obtain the modified heavy calcium carbonate; the preparation method of the aminosilane coupling agent modified heavy calcium carbonate comprises the following steps: spraying a silane coupling agent KH-550 on the surface of heavy calcium carbonate, and mixing at 100 ℃ for 60min, wherein the mass ratio of the heavy calcium carbonate to the silane coupling agent KH-550 is 100:6, preparing a base material;
the color layer is prepared from the following raw materials in percentage by mass: 3% of green master batch and the balance of polypropylene;
the heat sealing layer is prepared from the following raw materials in percentage by mass: 97.5 percent of COSMPLENE FS5612 heat-sealing master batch and 2.5 percent of silicon dioxide anti-blocking agent.
Wherein the total thickness of the BOPP film is 50 μm, the thickness of the first extinction layer is 2.3 μm, the thickness of the second extinction layer is 1 μm, the thickness of the color layer is 2 μm, and the thickness of the heat sealing layer is 1.5 μm.
The preparation method of the extinction type pearlescent color heat-sealing BOPP film is the same as that of example 1.
Comparative example 2
A extinction type pearlescent color heat-seal BOPP film sequentially comprises a first extinction layer, a second extinction layer, a core layer, a color layer and a heat-seal layer;
the raw material of the first extinction layer is Deguan D6612 extinction master batch;
the second extinction layer is prepared from the following raw materials in percentage by mass: 92% of Decrown D6612 matting masterbatch and 8% of Bynel 41E710 anhydride modified LLDPE resin;
the core layer is prepared from the following raw materials in percentage by mass: 16% of pearlescent master batch, 2% of monoglyceride and the balance of polypropylene; the pearlescent master batch is prepared from the following raw materials in percentage by mass: 70% of heavy calcium carbonate, 10101.5% of antioxidant, 0.8% of sodium stearate and the balance of polypropylene; the preparation method of the pearlescent master batch comprises the following steps: mixing heavy calcium carbonate, antioxidant 1010, sodium stearate and polypropylene, adding into a double screw extruder, extruding and granulating at 190-230 ℃ to obtain the product;
the color layer is prepared from the following raw materials in percentage by mass: 3% of green master batch, 7% of anhydride modified LLDPE resin and the balance of polypropylene;
the heat sealing layer is prepared from the following raw materials in percentage by mass: 97.5 percent of COSMPLENE FS5612 heat-sealing master batch and 2.5 percent of silicon dioxide anti-blocking agent.
Wherein the total thickness of the BOPP film is 50 μm, the thickness of the first extinction layer is 2.3 μm, the thickness of the second extinction layer is 1 μm, the thickness of the color layer is 2 μm, and the thickness of the heat sealing layer is 1.5 μm.
The preparation method of the extinction type pearlescent color heat-sealing BOPP film is the same as that of example 1.
Test examples
Referring to GB/T10003-2008, heat seal strengths of example 1 and comparative examples 1-2 were tested, and the test results are shown in Table 1:
TABLE 1
As can be seen from table 1, comparative document 1, in which an acid anhydride modified LLDPE resin was not added to the second matt layer and the color layer, had insufficient interlayer adhesion, was liable to cause interlayer peeling, and became a main limiting factor for insufficient heat seal strength; the heavy calcium carbonate in the pearlescent layer is not subjected to surface modification by the aminosilane coupling agent in the comparison document 2, because the heavy calcium carbonate in the pearlescent layer has high content, the surface polarity is strong, agglomeration is easy to occur, surface active groups are lost, the surface does not contain amino groups, the interlayer adhesive force can not be obviously improved through the bonding force with the anhydride groups of the anhydride modified LLDPE resin in the second matting layer and the color layer, and the heat sealing strength is still insufficient. The extinction type pearlescent color heat-seal BOPP film has heat-seal strength more than 2.5N/15mm, and can meet the standard of the BOPP film on the heat-seal strength.
The foregoing is only a preferred embodiment of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art, who is within the scope of the present application, should make equivalent substitutions or modifications according to the technical scheme of the present application and the inventive concept thereof, and should be covered by the scope of the present application.
Claims (8)
1. The extinction type pearlescent color heat-seal BOPP film is characterized by sequentially comprising a first extinction layer, a second extinction layer, a core layer, a color layer and a heat-seal layer;
the raw material of the first extinction layer is extinction master batch;
the second extinction layer is prepared from the following raw materials in percentage by mass: 90-95% of extinction master batch and 5-10% of anhydride modified LLDPE resin;
the core layer is prepared from the following raw materials in percentage by mass: 15-20% of pearlescent master batch, 1-3% of antistatic agent and the balance of polypropylene; the pearlescent master batch is prepared from the following raw materials in percentage by mass: 65-75% of amino silane coupling agent modified heavy calcium carbonate, 1-2% of antioxidant, 0.5-1% of lubricant and the balance of polypropylene;
the color layer is prepared from the following raw materials in percentage by mass: 0.5 to 10 percent of color masterbatch, 5 to 10 percent of anhydride modified LLDPE resin and the balance of polypropylene;
the heat sealing layer is prepared from the following raw materials in percentage by mass: 97-98% of heat-sealing master batch and 2-3% of anti-blocking agent.
2. The extinction type pearlescent color heat-seal BOPP film according to claim 1, wherein the preparation method of the aminosilane coupling agent modified heavy calcium carbonate comprises the following steps: spraying an aminosilane coupling agent on the surface of heavy calcium carbonate, and mixing for 50-90 min at 90-120 ℃ to obtain the calcium carbonate; the mass ratio of the heavy calcium carbonate to the aminosilane coupling agent is 100: (4-10); the aminosilane coupling agent is at least one of KH-550, KH-602 and KH-792.
3. The matt pearlescent color heat-seal BOPP film of claim 1, wherein the antioxidant is antioxidant 1010, antioxidant 168, or a combination thereof.
4. The matt pearlescent color heat-sealable BOPP film of claim 1, wherein the lubricant is at least one of sodium stearate, zinc stearate, calcium stearate.
5. The matt pearlescent color heat-sealable BOPP film of claim 1, wherein the antistatic agent is monoglyceride.
6. The matt pearlescent color heat-sealable BOPP film of claim 1, wherein the anti-blocking agent is silica, glass beads, or a combination thereof.
7. A process for preparing a matt pearlescent color heat sealable BOPP film as claimed in any of claims 1 to 6, comprising the steps of:
s1, respectively carrying out melt extrusion on raw materials of a first extinction layer, a second extinction layer, a core layer, a color layer and a heat seal layer to obtain a first extinction layer melt, a second extinction layer melt, a core layer melt, a color layer melt and a heat seal layer melt, carrying out coextrusion through a five-layer structure die head, and cooling and solidifying through a chilling roller to form a thick sheet;
and S2, sequentially stretching the thick sheet longitudinally and transversely, and then cooling and rolling to obtain the extinction type pearlescent color heat-sealing BOPP film.
8. The method for preparing a matt pearlescent color heat-seal BOPP film according to claim 7, wherein in S1, the chilled roller cooling temperature is 30-35 ℃;
s2, the preheating temperature of the longitudinal stretching is 110-120 ℃, the stretching temperature is 90-100 ℃, the stretching multiplying power is 4.8-5.0, and the shaping temperature is 100-110 ℃;
s2, the preheating temperature of the transverse stretching is 160-170 ℃, the stretching temperature is 145-155 ℃, the stretching multiplying power is 8-9, and the shaping temperature is 155-165 ℃.
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| CN117841505A (en) * | 2024-02-02 | 2024-04-09 | 广东欣创新材料科技有限公司 | PET (polyethylene terephthalate) plate film and preparation process thereof |
| CN117841505B (en) * | 2024-02-02 | 2024-07-09 | 广东欣创新材料科技有限公司 | PET (polyethylene terephthalate) plate film and preparation process thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117841505A (en) * | 2024-02-02 | 2024-04-09 | 广东欣创新材料科技有限公司 | PET (polyethylene terephthalate) plate film and preparation process thereof |
| CN117841505B (en) * | 2024-02-02 | 2024-07-09 | 广东欣创新材料科技有限公司 | PET (polyethylene terephthalate) plate film and preparation process thereof |
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