CN109263209A - A kind of transparent obstructive packaging film and preparation method thereof of room temperature sealing - Google Patents
A kind of transparent obstructive packaging film and preparation method thereof of room temperature sealing Download PDFInfo
- Publication number
- CN109263209A CN109263209A CN201811121291.4A CN201811121291A CN109263209A CN 109263209 A CN109263209 A CN 109263209A CN 201811121291 A CN201811121291 A CN 201811121291A CN 109263209 A CN109263209 A CN 109263209A
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- Prior art keywords
- film layer
- crowded
- ldpe
- oxidation aluminium
- cold seal
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Classifications
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- 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
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- 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
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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Abstract
The present invention relates to a kind of transparent obstructive packaging films and preparation method thereof of room temperature sealing.The film layer structure of the packaging film is distributed as BOPP film layer/crowded multiple PE film layer/oxidation aluminium coat/PET film layer/cold seal gel coating；Squeezing multiple PE film layer includes the second crowded cladding with the first crowded cladding of BOPP film layer bonding and with oxidation aluminium coat bonding, and the first crowded cladding includes low density polyethylene (LDPE), and the second crowded cladding includes low density polyethylene (LDPE) and ethylene-acrylic acid copolymer；Cold seal gel coating is coated with by the acrylic emulsion that solid content is 56-58% and is formed.The present invention is designed by the formula of film layer structure and corresponding film layer to packaging film, so that the heat-sealing temperature that the packaging film finally obtained not only avoids when pack content is sealed damages, the performance for also having ensured resistance dampness oxygen simultaneously, extends shelf life of products.The present invention is provided simultaneously with high-barrier and Visual Performance due to having room temperature sealing function, and sealing strength is high.
Description
Technical field
The invention belongs to field of membrane material, it is specifically related to transparent obstructive packaging film and its preparation side of a kind of room temperature sealing
Method.
Background technique
Composite Films for Flexible Packaging of Foodstuffs generallys use the film with heat sealability such as PE, CPP as inner layer material, then leads to
The mode for crossing heating seals material to protect the product in composite membrane, and principle is by way of electric heating or PULSE HEATING
Seal the hot sealing layer material molten of compound film inner layer, the shortcomings that heat-sealable way is to seal required heat can be to some heat
Sensitive pack content has an adverse effect, such as chocolate, ice cream, jujube cake.Therefore it is preferred a kind of without heating
Can the packaging material of sealing contain, since cold seal glue is pressure-sensitive adhesive material, not needing heating can seal at normal temperature
It closes, not only reduces energy consumption required for packaging facilities, also greatly improve packaging speed, be with a wide range of applications.
So existing chocolate product flexible package material-structure also has: BOPP/VMPET/ cold seal glue or VMOPP/ cold seal glue.But the packet
Major defect existing for dress material is not have transparent attribute, and consumer can not see content, and in addition heat seal strength is lower.
Summary of the invention
In order to solve the above technical problem, the present invention provides a kind of transparent obstructive packaging film of room temperature sealing and its preparation sides
Method.
In order to achieve the object of the present invention, the invention adopts the following technical scheme:
A kind of transparent obstructive packaging film of room temperature sealing, the film layer structure distribution of the packaging film are as follows: BOPP film layer/squeeze multiple PE
Film layer/oxidation aluminium coat/PET film layer/cold seal gel coating；The PE film layer again of squeezing includes squeezing again with the first of BOPP film layer bonding
Layer and the second crowded cladding bonded with oxidation aluminium coat, the first crowded cladding includes low density polyethylene (LDPE) (LDPE), described
Second crowded cladding includes that mass ratio is (98-102): the low density polyethylene (LDPE) (LDPE) and ethylene-acrylic acid copolymer of (18-22)
(EAA)；The cold seal gel coating is coated with by the acrylic emulsion that solid content is 56-58wt.% and is formed.
Further technical solution: for the BOPP film layer with a thickness of 18-22 μm, the PE thicknesses of layers again that squeezes is 13-17 μ
M, the oxidation aluminium coat OD value are 0.12-0.14, and with a thickness of 10-14 μm, the cold seal coating thickness is the PET film layer
3-5μm。
Further technical solution: in the low density polyethylene (LDPE) (LDPE) and the second crowded cladding in the first crowded cladding
Low density polyethylene (LDPE) (LDPE) mass ratio is (95-105): (75-85).
A kind of preparation method of the transparent obstructive packaging film of the room temperature sealing, comprising the following steps:
Step 1, Vacuum Deposition alumina treatment is carried out on a pet film, obtains oxidation aluminium coat/PET film layer；
Step 2, by it is described squeeze raw particles contained by multiple PE film layer and be added in extruder melt and squeeze out with by BOPP film
It is combined with each other with oxidation aluminium coat/PET film layer described in step 1, acquisition BOPP film layer/crowded multiple PE film layer/oxidation aluminium coat/
PET film layer；
Step 3, using coating apparatus on the BOPP film layer described in step 2/crowded multiple PE film layer/oxidation aluminium coat/PET film layer
Fixed point coating cold seal glue, the cold seal glue spread are 2.5-4.5g/m2, later drying, winding, obtain BOPP film layer/squeeze
Multiple PE film layer/oxidation aluminium coat/PET film layer/cold seal gel coating.
The beneficial effects of the present invention are:
(1) present invention is designed by the formula of film layer structure and corresponding film layer to packaging film, so that finally obtaining
The heat-sealing temperature that the packaging film obtained not only avoids when pack content is sealed damages, while also having ensured resistance dampness oxygen
Performance extends shelf life of products.The present invention is provided simultaneously with high-barrier and visualization property due to having room temperature sealing function
Can, and sealing strength is high, and such packaging does not occur also currently on the market, therefore the present invention has extensive market prospects.
(2) the advantages of cold seal gel coating of the present invention: a, cold seal gel coating are thin, and spreading area is few, and production cost is significantly
It reduces, i.e. reduction materials'use amount, economizes on resources；B, packaging speed is greatly improved, labor cost, ordinary circumstance are reduced
Under, online cold seal packaging speed (i.e. room temperature sealing) can reach 5 times of heat sealed package speed or more；C, safety and sanitation reliability is remote
More than heat-sealable material, encapsulating material does not have additive precipitate, non-toxic and tasteless, will not in the long-term packaging storage to food
Influence the taste of food；D, be easy to open at the sealing of packaging, it is easy to use, particularly suitable for infant foods pack, embody with
People-first humanity package theory；E, compared with traditional " BOPP/VMPET/ cold seal glue " material, the present invention is used crowded multiple
Structure cold seal glue wound membrane is softer under the conditions of same thickness, and resilience is smaller after packaging sealing, more preferably packs to can guarantee
Leakproofness.
(3) application of AlOx-PET material (oxidation aluminium coat/PET film layer) of the present invention, overcomes Al and VMPET, VMCPP
The opaque disadvantage of equal aluminizers separated packaging material, the transparency of packaging film product of the present invention greatly improve, so that in packaging
It is tolerant have the characteristics that it is visual.
(4) formula of the second crowded cladding of the invention, which increases, squeezes out PE with the combination aoxidized between aluminium coat (AlOx layer)
Power improves combined strength bination.
Specific embodiment
More specific detail is made to technical solution of the present invention below with reference to embodiment.Original used in the embodiment of the present invention
Material is ordinary commercial products.Wherein: low density polyethylene (LDPE) (LDPE) is the particle product of the trade mark 955 of the Dow Chemical Company's production,
Ethylene-acrylic acid copolymer (EAA) is E.I.Du Pont Company's product.
Embodiment 1
The preparation method of the transparent obstructive packaging film of the room temperature sealing, comprising the following steps:
Step 1, Vacuum Deposition alumina treatment is carried out on a pet film, obtains oxidation aluminium coat/PET film layer.
The processing step includes vacuum process, and process, cutting or rewinding process is deposited.The vapor deposition process is divided into clearly
Washing process and ionization oxidation deposition procedures, the cleaning process is to handle Plastic film surface with microwave plasma system.
The ionization oxidation deposition procedures are that evaporation boat is heated to 1400-1600 DEG C, then send aluminum steel to evaporation
The oxygen that purity is 99.9% or more is passed through the top of evaporating area by boat surface, is equipped with microwave plasma in the top of evaporating area
System, the power of the microwave plasma system are 1.5-5KW, and microwave operational frequencies: 2450 ± 50MHZ keeps aluminium oxide heavy
Product is in film surface；Oxygen intake is 0.5-5L/min；The evaporation rate of aluminium is 3-10g/min.
Step 2, raw particles contained by the crowded multiple PE film layer are added in double screw extruder and melt and squeeze out incites somebody to action
BOPP film is combined with each other with oxidation aluminium coat/PET film layer described in step 1, obtains BOPP film layer/crowded multiple PE film layer/aluminium oxide
Coating/PET film layer.The oxidation aluminium coat OD value is 0.13.
It is described that squeeze multiple PE film layer include the with the first crowded cladding of BOPP film layer bonding and with oxidation aluminium coat bonding
Two crowded cladding, the first crowded cladding include low density polyethylene (LDPE) (LDPE), and the second crowded cladding includes that mass ratio is 100:
20 low density polyethylene (LDPE) (LDPE) and ethylene-acrylic acid copolymer (EAA)；The cold seal gel coating is 57% by solid content
Acrylic emulsion is coated with to be formed.The low-density in low density polyethylene (LDPE) (LDPE) and the second crowded cladding in the first crowded cladding
Polyethylene (LDPE) mass ratio is 100:80.Extruder speed is 80-150m/min.
Step 3, the BOPP film layer described in step 2/crowded multiple PE film layer/oxidation aluminium coat/PET using multi-functional coating apparatus
Fixed point coating cold seal glue, specific process step on the face PET of composite membrane are as follows: the anilox roll for being 50-72 μm with ink cell depth is by glue
Cold seal glue in slot is transferred to the face PET of composite membrane, then cross equipment baking oven, three-stage oven temperature be set as 65 DEG C, 75 DEG C,
85 DEG C, speed 70-150m/min, drying, winding, obtain BOPP film layer/crowded multiple PE film layer/oxidation aluminium coat/PET later
Film layer/cold seal gel coating.
The cold seal glue spread is 3.0-4.5g/m2, for the BOPP film layer with a thickness of 20 μm, the crowded multiple PE film layer is thick
Degree is 15 μm, and for the PET film layer with a thickness of 12 μm, the cold seal coating thickness is 4 μm.
Embodiment 2
It is identical as step in embodiment 1, only adjusted on technological parameter, specific as follows:
The oxidation aluminium coat OD value is 0.12.
The second crowded cladding includes the low density polyethylene (LDPE) (LDPE) and ethylene-acrylic acid copolymer that mass ratio is 98:22
Object (EAA).The low density polyethylene (LDPE) in low density polyethylene (LDPE) (LDPE) and the second crowded cladding in the first crowded cladding
(LDPE) mass ratio is 95:85.
The cold seal glue spread is 2.5g/m2.With a thickness of 18 μm, the PE thicknesses of layers again that squeezes is the BOPP film layer
13 μm, for the PET film layer with a thickness of 14 μm, the cold seal coating thickness is 5 μm.
Embodiment 3
It is identical as step in embodiment 1, only adjusted on technological parameter, specific as follows:
The oxidation aluminium coat OD value is 0.14.
The second crowded cladding includes the low density polyethylene (LDPE) (LDPE) and ethylene-acrylic acid copolymer that mass ratio is 102:18
Object (EAA).The low density polyethylene (LDPE) in low density polyethylene (LDPE) (LDPE) and the second crowded cladding in the first crowded cladding
(LDPE) mass ratio is 105:75.
The cold seal glue spread is 4.5g/m2.With a thickness of 22 μm, the PE thicknesses of layers again that squeezes is the BOPP film layer
17 μm, for the PET film layer with a thickness of 10 μm, the cold seal coating thickness is 3 μm.
The performance of packaging film of the present invention and traditional structure packaging film is compared as follows shown in table 1:
Claims (4)
1. a kind of transparent obstructive packaging film of room temperature sealing, it is characterised in that: the film layer structure of the packaging film is distributed are as follows: BOPP film
Layer/squeeze multiple PE film layer/oxidation aluminium coat/PET film layer/cold seal gel coating；The crowded multiple PE film layer includes and BOPP film layer bonds
The first crowded cladding and with oxidation aluminium coat bonding the second crowded cladding, the first crowded cladding includes low density polyethylene (LDPE)
(LDPE), it is (98-102) that the described second crowded cladding, which includes mass ratio: the low density polyethylene (LDPE) (LDPE) and ethylene-of (18-22)
Acrylic copolymer (EAA)；The cold seal gel coating is coated with by the acrylic emulsion that solid content is 56-58wt.% and is formed.
2. the transparent obstructive packaging film of room temperature as described in claim 1 sealing, it is characterised in that: the BOPP film layer with a thickness of
18-22 μm, the PE thicknesses of layers again that squeezes is 13-17 μm, and the oxidation aluminium coat OD value is 0.12-0.14, the PET film layer
With a thickness of 10-14 μm, the cold seal coating thickness is 3-5 μm.
3. the transparent obstructive packaging film of room temperature sealing as described in claim 1, it is characterised in that: in the first crowded cladding
Low density polyethylene (LDPE) (LDPE) mass ratio in low density polyethylene (LDPE) (LDPE) and the second crowded cladding is (95-105): (75-85).
4. a kind of preparation method of the transparent obstructive packaging film of the room temperature sealing as described in claims 1 or 2 or 3, feature exist
In the following steps are included:
Step 1, Vacuum Deposition alumina treatment is carried out on a pet film, obtains oxidation aluminium coat/PET film layer；
Step 2, by it is described squeeze raw particles contained by multiple PE film layer and be added in extruder melt and squeeze out with by BOPP film and step
The rapid 1 oxidation aluminium coat/PET film layer is combined with each other, and obtains BOPP film layer/crowded multiple PE film layer/oxidation aluminium coat/PET film
Layer；
Step 3, it is pinpointed on the BOPP film layer described in step 2/crowded multiple PE film layer/oxidation aluminium coat/PET film layer using coating apparatus
It is coated with cold seal glue, the cold seal glue spread is 2.5-4.5g/m2, drying, winding, obtain BOPP film layer/crowded multiple PE later
Film layer/oxidation aluminium coat/PET film layer/cold seal gel coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811121291.4A CN109263209B (en) | 2018-09-26 | 2018-09-26 | Transparent barrier packaging film sealed at normal temperature and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811121291.4A CN109263209B (en) | 2018-09-26 | 2018-09-26 | Transparent barrier packaging film sealed at normal temperature and preparation method thereof |
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| CN109263209A true CN109263209A (en) | 2019-01-25 |
| CN109263209B CN109263209B (en) | 2021-04-02 |
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| CN201811121291.4A Active CN109263209B (en) | 2018-09-26 | 2018-09-26 | Transparent barrier packaging film sealed at normal temperature and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110126312A (en) * | 2019-04-24 | 2019-08-16 | 广东领先环保科技有限公司 | A kind of recyclable enhanced foaming sheet packaging material and preparation method thereof |
| CN111016302A (en) * | 2019-12-23 | 2020-04-17 | 广州市瑞高包装工业有限公司 | Hose and preparation method thereof |
| CN111038054A (en) * | 2019-12-23 | 2020-04-21 | 常州市华健药用包装材料股份有限公司 | Visual environment-friendly medicinal composite membrane based on temperature-sensitive technology and processing technology thereof |
| CN111038047A (en) * | 2019-12-23 | 2020-04-21 | 广州市瑞高包装工业有限公司 | Sheet, preparation method and composite hose |
| CN111730942A (en) * | 2020-06-30 | 2020-10-02 | 广州市瑞高包装工业有限公司 | Antibacterial and mildewproof composite sheet and composite hose |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110126312A (en) * | 2019-04-24 | 2019-08-16 | 广东领先环保科技有限公司 | A kind of recyclable enhanced foaming sheet packaging material and preparation method thereof |
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| CN111016302A (en) * | 2019-12-23 | 2020-04-17 | 广州市瑞高包装工业有限公司 | Hose and preparation method thereof |
| CN111038054A (en) * | 2019-12-23 | 2020-04-21 | 常州市华健药用包装材料股份有限公司 | Visual environment-friendly medicinal composite membrane based on temperature-sensitive technology and processing technology thereof |
| CN111038047A (en) * | 2019-12-23 | 2020-04-21 | 广州市瑞高包装工业有限公司 | Sheet, preparation method and composite hose |
| CN111730942A (en) * | 2020-06-30 | 2020-10-02 | 广州市瑞高包装工业有限公司 | Antibacterial and mildewproof composite sheet and composite hose |
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| CN109263209B (en) | 2021-04-02 |
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