CN111730938A - Ultraviolet shielding transparent plastic packaging film - Google Patents
Ultraviolet shielding transparent plastic packaging film Download PDFInfo
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- CN111730938A CN111730938A CN202010361809.2A CN202010361809A CN111730938A CN 111730938 A CN111730938 A CN 111730938A CN 202010361809 A CN202010361809 A CN 202010361809A CN 111730938 A CN111730938 A CN 111730938A
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- layer
- ultraviolet shielding
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- transparent plastic
- ultraviolet
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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
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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
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/306—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl acetate or vinyl alcohol (co)polymers
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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
- B32B27/32—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
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
-
- 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
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/02—Physical, chemical or physicochemical properties
-
- 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
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
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- 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
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
-
- 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
- B32B2307/70—Other properties
- B32B2307/71—Resistive to light or to UV
-
- 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
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
Abstract
The invention discloses an ultraviolet shielding transparent plastic packaging film which sequentially comprises a polyester film, an ink layer, a first ultraviolet shielding adhesive layer, a blocking layer, a second ultraviolet shielding adhesive layer and a heat sealing layer from outside to inside; the thickness of the ultraviolet shielding transparent plastic packaging film is 100-250 mu m, the thickness of the polyester film layer is 30-80 mu m, the thickness of the ink layer is 1-5 mu m, the thickness of the first ultraviolet shielding adhesive layer is 5-15 mu m, the thickness of the barrier layer is 5-30 mu m, the thickness of the second ultraviolet shielding adhesive layer is 10-30 mu m, and the thickness of the heat sealing layer is 40-80 mu m; methoxy cinnamate, octocrylene and a hydrophobically modified zinc oxide ultraviolet shielding agent are added into the first ultraviolet shielding layer and/or the second ultraviolet shielding layer. The invention provides a transparent plastic packaging film which has good ultraviolet blocking and shielding effects and excellent appearance performance and can effectively prevent an ultraviolet absorbent from diffusing into contents.
Description
Technical Field
The invention relates to the technical field of packaging films, in particular to an ultraviolet shielding transparent plastic packaging film.
Background
The transparent film package can ensure that people can clearly see the commodities in the package under illumination, the bright and beautiful color, the exquisite and striking appearance and the like of the transparent film package are clear at a glance, the specific situation of the commodities can be known by consumers, the purchasing desire of the consumers is improved, and the products are judged correctly. However, high transparency packages have the great disadvantage that they can react chemically with the product under the influence of light. The electronic light-emitting device is sensitive to water vapor and needs high-barrier film packaging, but the emitted light radiation of the electronic light-emitting device attracts more and more attention in recent years, and the electronic light-emitting device is easy to damage eyes and skin of people under long-time irradiation in life and work.
In the prior art, inorganic ultraviolet absorbers such as zinc oxide or titanium dioxide are adopted, but after the inorganic ultraviolet absorbers are added into a polymer base material to form a film, nano particles are not crosslinked with a plastic high molecular chain and exist as nano particles, the gas barrier property of the film can be influenced, and the inorganic ultraviolet absorbers have the risk of dissipating contents in the long-term packaging process.
Based on the defects in the prior art, the transparent plastic packaging film which has good ultraviolet blocking and shielding effects and can prevent the ultraviolet absorbent from diffusing into the contents is provided.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a transparent plastic packaging film which has good ultraviolet blocking and shielding effect and excellent appearance performance and can effectively prevent an ultraviolet absorbent from diffusing into contents.
In order to achieve the purpose, the technical scheme of the invention is to design an ultraviolet shielding transparent plastic packaging film, wherein the packaging film sequentially comprises a polyester film, an ink layer, a first ultraviolet shielding adhesive layer, a blocking layer, a second ultraviolet shielding adhesive layer and a heat sealing layer from outside to inside; the thickness of the ultraviolet shielding transparent plastic packaging film is 100-250 mu m, the thickness of the polyester film layer is 30-80 mu m, the thickness of the ink layer is 1-5 mu m, the thickness of the first ultraviolet shielding adhesive layer is 5-15 mu m, the thickness of the barrier layer is 5-30 mu m, the thickness of the second ultraviolet shielding adhesive layer is 10-30 mu m, and the thickness of the heat sealing layer is 40-80 mu m;
methoxy cinnamate, octocrylene and a hydrophobically modified zinc oxide ultraviolet shielding agent are added into the first ultraviolet shielding layer and/or the second ultraviolet shielding layer. The methoxycinnamate and octocrylene have good ultraviolet protection effects, and the two have synergistic effects in protecting against ultraviolet rays.
According to a preferable technical scheme, the first ultraviolet shielding adhesive layer or the second ultraviolet shielding adhesive layer comprises, by mass, 2-15% of methoxycinnamate, 0-10% of octocrylene, 0.5-8% of hydrophobically modified zinc oxide, 65-90% of polyurethane adhesive resin and 0.5-2% of an emulsifier. When the addition amount of the methoxycinnamate is less than 0.5%, a sufficient ultraviolet ray protection effect cannot be obtained, the addition amount of the methoxycinnamate is more than 15%, which significantly affects emulsion stability, and since the ultraviolet inhibitor is added to the adhesive layer, the addition amount of the methoxycinnamate is less than 15%, preferably less than 10%, in order to ensure good adhesive properties of the adhesive layer. The addition amount of octocrylene is preferably 6% because sufficient uv protection effect cannot be obtained when the addition amount of octocrylene is less than 0.02%, and the stability of the system is affected when the addition amount of octocrylene is more than 10%.
The method of hydrophobizing the zinc oxide by the hydrophobically modified zinc oxide is not particularly limited, and the zinc oxide can be hydrophobized by the following hydrophobizing agents, for example, aluminum stearate, aluminum laurate, fatty acid dextrin, trimethylsiloxane, fluorine-modified trimethylsiloxane, methylphenylsiloxane, fluorine-modified methylphenylsiloxane, dimethylpolysiloxane, diphenylpolysiloxane, methylphenylpolysiloxane, and the like.
According to a preferable technical scheme, the first ultraviolet shielding adhesive layer or the second ultraviolet shielding adhesive layer comprises, by mass, 0-10% of methoxycinnamate, 0.4-10% of octocrylene, 0.5-8% of hydrophobically modified zinc oxide, 50-70% of polyacrylate resin, 5-15% of maleic anhydride grafted polypropylene resin and 0.2-3% of an emulsifier.
Preferably, the barrier layer is an ethylene-vinyl alcohol copolymer layer or a polyamide layer. The ethylene-vinyl alcohol copolymer is made of a Japan Coli EVOH resin.
According to the preferable technical scheme, the heat sealing layer is a three-layer tape casting composite film, and the heat sealing layer is formed by combining one or more of a high-density polyethylene layer, a metallocene polyethylene layer and a low-density polyethylene layer.
The ultraviolet shielding transparent plastic packaging film is used for packaging electronic components and workpieces.
The invention has the advantages and beneficial effects that: the invention provides a transparent plastic packaging bag with excellent ultraviolet shielding effect, wherein an ultraviolet shielding agent is added into an adhesive layer, and the ultraviolet shielding effect of the transparent plastic packaging bag is improved by at least arranging two ultraviolet shielding layers; the good ultraviolet resistance effect is endowed to the transparent plastic package by utilizing the synergistic ultraviolet resistance effect of the methoxy cinnamate and the octocrylene; the hydrophobic modified zinc oxide is adopted to improve the dispersion effect of the zinc oxide in the adhesive, prevent the agglomeration of the uvioresistant agent, cause the bad appearance of the product and influence the uvioresistant effect.
Drawings
FIG. 1 is a schematic structural view of the present invention;
in the figure: 1. a polyester film; 2. an ink layer; 3. a first ultraviolet shielding adhesive layer; 4. a barrier layer; 5. a second ultraviolet shielding adhesive layer; 6. a heat seal layer; 61. a high density polyethylene layer; 62. a metallocene polyethylene layer; 63. a low density polyethylene layer.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
Example 1
An ultraviolet shielding transparent plastic packaging film comprises a polyester film (PET)1, an ink layer 2, a first ultraviolet shielding adhesive layer 3, a barrier layer 4, a second ultraviolet shielding adhesive layer 5 and a heat sealing layer 6 from outside to inside in sequence; the thickness of the ultraviolet shielding transparent plastic packaging film is 107 micrometers, the thickness of the polyester film layer is 30 micrometers, the thickness of the ink layer is 2 micrometers, the thickness of the first ultraviolet shielding adhesive layer is 5 micrometers, the thickness of the barrier layer is 5 micrometers, the thickness of the second ultraviolet shielding adhesive layer is 10 micrometers, and the thickness of the heat sealing layer is 55 micrometers;
methoxy cinnamate, octocrylene and a hydrophobically modified zinc oxide ultraviolet shielding agent are added into the first ultraviolet shielding layer and the second ultraviolet shielding layer.
The first ultraviolet shielding adhesive layer or the second ultraviolet shielding adhesive layer comprises, by mass, 2% of methoxycinnamate, 5% of octocrylene, 5% of hydrophobically modified zinc oxide, 86% of polyurethane adhesive resin and 2% of an emulsifier.
The barrier layer is an ethylene-vinyl alcohol copolymer layer.
The heat-sealing layer is a three-layer tape-casting composite film, the heat-sealing layer is composed of a high-density polyethylene layer and a low-density polyethylene layer, the thickness of the high-density polyethylene layer is 20 micrometers, the thickness of the low-density polyethylene layer is 35 micrometers, and the high-density polyethylene layer is connected with the second ultraviolet shielding adhesive layer.
In the UV resistance test, the film of example 1 exhibited a 98.8% light-shielding efficiency within a wavelength of 420 nm.
Example 2
An ultraviolet shielding transparent plastic packaging film comprises a polyester film, an ink layer, a first ultraviolet shielding adhesive layer, a blocking layer, a second ultraviolet shielding adhesive layer and a heat sealing layer from outside to inside in sequence; the thickness of the ultraviolet shielding transparent plastic packaging film is 182 mu m, the thickness of the polyester film layer is 60 mu m, the thickness of the ink layer is 2 mu m, the thickness of the first ultraviolet shielding adhesive layer is 10 mu m, the thickness of the barrier layer is 15 mu m, the thickness of the second ultraviolet shielding adhesive layer is 15 mu m, and the thickness of the heat sealing layer is 80 mu m;
methoxy cinnamate, octocrylene and a hydrophobically modified zinc oxide ultraviolet shielding agent are added into the first ultraviolet shielding layer and the second ultraviolet shielding layer.
The first ultraviolet shielding adhesive layer or the second ultraviolet shielding adhesive layer comprises 6% of methoxycinnamate, 2% of octocrylene, 5% of hydrophobically modified zinc oxide, 70% of polyacrylate resin, 14% of maleic anhydride grafted polypropylene resin and 3% of emulsifier in percentage by mass.
The barrier layer is an ethylene-vinyl alcohol copolymer layer.
The heat sealing layer is a three-layer tape casting composite film, the heat sealing layer is composed of a high-density polyethylene layer and a low-density polyethylene layer, the thickness of the high-density polyethylene layer is 20 micrometers, the thickness of the metallocene polyethylene layer is 20 micrometers, the thickness of the low-density polyethylene layer is 20 micrometers, the high-density polyethylene layer is connected with the second ultraviolet shielding adhesive layer, and the high-density polyethylene layer 61, the metallocene polyethylene layer 62 and the low-density polyethylene layer 63 are sequentially connected.
In the UV resistance test, the film of example 2 exhibited 99.8% light shielding within a wavelength of 420 nm.
Example 3
An ultraviolet shielding transparent plastic packaging film comprises a polyester film, an ink layer, a first ultraviolet shielding adhesive layer, a blocking layer, a second ultraviolet shielding adhesive layer and a heat sealing layer from outside to inside in sequence; the thickness of the ultraviolet shielding transparent plastic packaging film is 248 microns, the thickness of the polyester film layer is 80 microns, the thickness of the ink layer is 3 microns, the thickness of the first ultraviolet shielding adhesive layer is 15 microns, the thickness of the barrier layer is 30 microns, the thickness of the second ultraviolet shielding adhesive layer is 30 microns, and the thickness of the heat sealing layer is 90 microns;
methoxy cinnamate, octocrylene and a hydrophobically modified zinc oxide ultraviolet shielding agent are added into the first ultraviolet shielding layer and the second ultraviolet shielding layer.
The first ultraviolet shielding adhesive layer and the second ultraviolet shielding adhesive layer comprise, by mass, 5% of methoxycinnamate, 5% of octocrylene, 5% of hydrophobically modified zinc oxide, 83% of polyurethane adhesive resin and 2% of an emulsifier.
The barrier layer is an ethylene-vinyl alcohol copolymer layer.
The heat-sealing layer is a three-layer tape-casting composite film, the heat-sealing layer is composed of a high-density polyethylene layer and a low-density polyethylene layer, the thickness of the high-density polyethylene layer is 20 micrometers, the thickness of the metallocene polyethylene layer is 30 micrometers, the thickness of the low-density polyethylene layer is 40 micrometers, the high-density polyethylene layer is connected with the second ultraviolet shielding adhesive layer, and the high-density polyethylene layer, the metallocene polyethylene layer and the low-density polyethylene layer are sequentially connected.
In the UV resistance test, the film of example 3 exhibited 99.9% light shielding within a wavelength of 420 nm.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (7)
1. An ultraviolet shielding transparent plastic packaging film is characterized in that the packaging film sequentially comprises a polyester film, an ink layer, a first ultraviolet shielding adhesive layer, a blocking layer, a second ultraviolet shielding adhesive layer and a heat sealing layer from outside to inside; the thickness of the ultraviolet shielding transparent plastic packaging film is 100-250 mu m, the thickness of the polyester film layer is 30-80 mu m, the thickness of the ink layer is 1-5 mu m, the thickness of the first ultraviolet shielding adhesive layer is 5-15 mu m, the thickness of the barrier layer is 5-30 mu m, the thickness of the second ultraviolet shielding adhesive layer is 10-30 mu m, and the thickness of the heat sealing layer is 40-80 mu m;
methoxy cinnamate, octocrylene and a hydrophobically modified zinc oxide ultraviolet shielding agent are added into the first ultraviolet shielding layer and/or the second ultraviolet shielding layer.
2. The ultraviolet shielding transparent plastic packaging film according to claim 1, wherein the first ultraviolet shielding adhesive layer or the second ultraviolet shielding adhesive layer comprises, by mass, 2 to 15% of methoxycinnamate, 0 to 10% of octocrylene, 0.5 to 8% of hydrophobically modified zinc oxide, 65 to 90% of polyurethane adhesive resin, and 0.5 to 2% of an emulsifier.
3. The ultraviolet shielding transparent plastic packaging film according to claim 1, wherein the first ultraviolet shielding adhesive layer or the second ultraviolet shielding adhesive layer comprises, by mass, 0 to 10% of methoxycinnamate, 0.4 to 10% of octocrylene, 0.5 to 8% of hydrophobically modified zinc oxide, 50 to 70% of polyacrylate resin, 5 to 15% of maleic anhydride grafted polypropylene resin, and 0.2 to 3% of emulsifier.
4. The uv-shielding transparent plastic packaging film according to claim 2, wherein the barrier layer is an ethylene-vinyl alcohol copolymer layer or a polyamide layer.
5. The uv-shielding transparent plastic packaging film according to claim 3, wherein the barrier layer is an ethylene-vinyl alcohol copolymer layer or a polyamide layer.
6. The UV-shielding transparent plastic packaging film according to claim 5, wherein the heat-sealing layer is a three-layer cast composite film, and the heat-sealing layer is formed by one or a combination of a high-density polyethylene layer, a metallocene polyethylene layer and a low-density polyethylene layer.
7. The ultraviolet-shielding transparent plastic packaging film as claimed in any one of claims 1 to 6, wherein the ultraviolet-shielding transparent plastic packaging film is used for packaging electronic components and workpieces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010361809.2A CN111730938A (en) | 2020-04-30 | 2020-04-30 | Ultraviolet shielding transparent plastic packaging film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010361809.2A CN111730938A (en) | 2020-04-30 | 2020-04-30 | Ultraviolet shielding transparent plastic packaging film |
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| CN111730938A true CN111730938A (en) | 2020-10-02 |
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| CN202010361809.2A Pending CN111730938A (en) | 2020-04-30 | 2020-04-30 | Ultraviolet shielding transparent plastic packaging film |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104168882A (en) * | 2012-01-16 | 2014-11-26 | 株式会社资生堂 | Water-in-oil-type emulsion skin cosmetic |
| CN203994917U (en) * | 2014-03-05 | 2014-12-10 | 上海紫江彩印包装有限公司 | A kind of blister package |
| CN104401081A (en) * | 2014-12-06 | 2015-03-11 | 江苏申凯包装高新技术股份有限公司 | Ultravioresistant transparent composite packaging film |
| CN207560648U (en) * | 2017-11-08 | 2018-06-29 | 广东小天才科技有限公司 | Electromagnetic shielding component |
| CN207613328U (en) * | 2017-12-08 | 2018-07-17 | 大连爱瑞德纳米科技有限公司 | A kind of sun umbrella |
| CN110446414A (en) * | 2019-08-12 | 2019-11-12 | 北京理工大学 | Suction wave electromagnetic shielding and vibration absorber for electronic product |
-
2020
- 2020-04-30 CN CN202010361809.2A patent/CN111730938A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104168882A (en) * | 2012-01-16 | 2014-11-26 | 株式会社资生堂 | Water-in-oil-type emulsion skin cosmetic |
| CN203994917U (en) * | 2014-03-05 | 2014-12-10 | 上海紫江彩印包装有限公司 | A kind of blister package |
| CN104401081A (en) * | 2014-12-06 | 2015-03-11 | 江苏申凯包装高新技术股份有限公司 | Ultravioresistant transparent composite packaging film |
| CN207560648U (en) * | 2017-11-08 | 2018-06-29 | 广东小天才科技有限公司 | Electromagnetic shielding component |
| CN207613328U (en) * | 2017-12-08 | 2018-07-17 | 大连爱瑞德纳米科技有限公司 | A kind of sun umbrella |
| CN110446414A (en) * | 2019-08-12 | 2019-11-12 | 北京理工大学 | Suction wave electromagnetic shielding and vibration absorber for electronic product |
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Application publication date: 20201002 |
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