CN111284097A - Far infrared geothermal packaging composite film and processing method thereof - Google Patents
Far infrared geothermal packaging composite film and processing method thereof Download PDFInfo
- Publication number
- CN111284097A CN111284097A CN201910940509.7A CN201910940509A CN111284097A CN 111284097 A CN111284097 A CN 111284097A CN 201910940509 A CN201910940509 A CN 201910940509A CN 111284097 A CN111284097 A CN 111284097A
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- resin
- eva
- geothermal
- film
- composite film
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- 239000002131 composite material Substances 0.000 title claims abstract description 26
- 238000004806 packaging method and process Methods 0.000 title claims abstract description 14
- 238000003672 processing method Methods 0.000 title claims abstract description 8
- 230000003712 anti-aging effect Effects 0.000 claims abstract description 28
- 229920005989 resin Polymers 0.000 claims abstract description 28
- 239000011347 resin Substances 0.000 claims abstract description 28
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 21
- 229920005672 polyolefin resin Polymers 0.000 claims abstract description 18
- 238000002844 melting Methods 0.000 claims abstract description 17
- 230000008018 melting Effects 0.000 claims abstract description 17
- 239000011248 coating agent Substances 0.000 claims abstract description 14
- 238000000576 coating method Methods 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 13
- 239000000758 substrate Substances 0.000 claims abstract description 13
- 239000012943 hotmelt Substances 0.000 claims abstract description 12
- 238000013329 compounding Methods 0.000 claims abstract description 8
- 238000010030 laminating Methods 0.000 claims abstract description 7
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 17
- 238000004381 surface treatment Methods 0.000 claims description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 4
- 238000003851 corona treatment Methods 0.000 claims description 4
- -1 polyethylene Polymers 0.000 claims description 4
- 238000004026 adhesive bonding Methods 0.000 claims description 3
- 239000012965 benzophenone Substances 0.000 claims description 3
- 239000004698 Polyethylene Substances 0.000 claims description 2
- 239000004743 Polypropylene Substances 0.000 claims description 2
- 239000004793 Polystyrene Substances 0.000 claims description 2
- 150000008360 acrylonitriles Chemical class 0.000 claims description 2
- 150000008366 benzophenones Chemical class 0.000 claims description 2
- 150000001565 benzotriazoles Chemical class 0.000 claims description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 2
- 239000006229 carbon black Substances 0.000 claims description 2
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 229920000573 polyethylene Polymers 0.000 claims description 2
- 229920001155 polypropylene Polymers 0.000 claims description 2
- 229920002223 polystyrene Polymers 0.000 claims description 2
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 2
- 239000004800 polyvinyl chloride Substances 0.000 claims description 2
- 238000007761 roller coating Methods 0.000 claims description 2
- 150000003902 salicylic acid esters Chemical class 0.000 claims description 2
- 239000004408 titanium dioxide Substances 0.000 claims description 2
- 229920002799 BoPET Polymers 0.000 claims 1
- 229920006280 packaging film Polymers 0.000 abstract description 6
- 239000012785 packaging film Substances 0.000 abstract description 6
- 229920000098 polyolefin Polymers 0.000 abstract description 6
- 230000032798 delamination Effects 0.000 abstract description 5
- 238000005260 corrosion Methods 0.000 abstract description 3
- 230000007797 corrosion Effects 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 3
- 238000010292 electrical insulation Methods 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 description 8
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 4
- 230000032683 aging Effects 0.000 description 4
- 229920001684 low density polyethylene Polymers 0.000 description 4
- 239000004702 low-density polyethylene Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910021389 graphene Inorganic materials 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000004831 Hot glue Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- RWCCWEUUXYIKHB-UHFFFAOYSA-N benzophenone Chemical group C=1C=CC=CC=1C(=O)C1=CC=CC=C1 RWCCWEUUXYIKHB-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 238000004383 yellowing Methods 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
- 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
-
- 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
-
- 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
-
- 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
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2007/00—Flat articles, e.g. films or sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2009/00—Layered products
-
- 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
- B32B2255/00—Coating on the layer surface
- B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer
-
- 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
- B32B2255/00—Coating on the layer surface
- B32B2255/26—Polymeric coating
-
- 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
- B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
- B32B2307/206—Insulating
-
- 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
- B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention provides a far infrared geothermal packaging composite film and a processing method thereof, wherein the composite film is formed by laminating and compounding an EVA hot melting layer and a PET substrate film which is treated by corona, and a tackifying coating is coated on the surface of the EVA hot melting layer; the EVA hot-melt layer consists of EVA, polyolefin resin and an anti-aging agent, wherein the mass ratio of the EVA resin to the polyolefin resin is 1-4: 1, and the mass fraction of the anti-aging agent is 0.1-2% of the total mass of the resin; the tackifying coating is a solution of graft modified hydrogenated tackifying resin. The invention improves the peeling strength of the original geothermal film, improves the anti-aging performance, selects the polyolefin material as the modified material, has excellent comprehensive properties of high strength, high toughness, high electrical insulation, high chemical corrosion resistance and the like, improves the melting point of the geothermal film packaging film, and is not easy to generate the conditions of bubbles, delamination and the like in later use.
Description
Technical Field
The invention relates to the technical field of composite films, in particular to a far infrared geothermal packaging composite film and a processing method thereof.
Background
The geothermal film heating is one of the advanced heating modes in the world at present, and the geothermal film heating is a high-tech product which takes electric power as energy and conducts heat by infrared radiation, thereby saving energy, protecting environment, and reducing carbon and emission. Is the most comfortable and healthy heating method in various heating products in the development of human society so far. The geothermal film heating system has the advantages of environmental protection, energy saving, material saving, money saving, safety and the like.
At present, most of geothermal film packaging films are formed by compounding polyester films and common hot melt adhesives, and the problems of low peeling strength, easy delamination, low melting point, easy aging, bubbles in the use process and the like exist. The service life of the geothermal film is greatly reduced due to the above conditions, so that the use cost is increased, and certain potential safety hazards exist. On the basis, a novel geothermal film packaging film which is high in peel strength, high in melting point and not prone to aging and delamination needs to be developed.
Disclosure of Invention
The invention aims to solve the problems of the prior art and provides a far infrared geothermal packaging composite film and a processing method thereof, which improve the peeling strength of the original geothermal film and improve the ageing resistance, select polyolefin materials as modified materials, have excellent comprehensive properties such as high strength, high toughness, high electric insulation, high chemical corrosion resistance and the like, improve the melting point of the geothermal film packaging film, and are not easy to generate bubbles, delamination and the like in later use.
The invention provides a far infrared geothermal packaging composite film, which is formed by laminating and compounding an EVA hot melting layer and a PET substrate film subjected to corona treatment, wherein the surface of the EVA hot melting layer is coated with a tackifying coating; the EVA hot-melt layer consists of EVA, polyolefin resin and an anti-aging agent, wherein the mass ratio of the EVA resin to the polyolefin resin is 1-4: 1, and the mass fraction of the anti-aging agent is 0.1-2% of the total mass of the resin; the tackifying coating is a solution of graft modified hydrogenated tackifying resin.
Further improved, the thickness of the PET base material film is 50-150 μm; the thickness of the EVA hot melting layer is 50-150 μm.
In a further improvement, the polyolefin resin is one or more of polyvinyl chloride, polyethylene, polypropylene and polystyrene.
The further improvement is that the anti-aging agent is an inorganic anti-aging agent, and comprises talcum powder, calcium carbonate, titanium dioxide and carbon black.
Further improved, the anti-aging agent is an organic anti-aging agent, and comprises salicylic acid esters, benzophenones, benzotriazoles and substituted acrylonitrile.
The invention also provides a processing method of the far infrared geothermal packaging composite film, which is characterized by mainly comprising the following steps:
1) preparing EVA resin and polyolefin resin in a mass ratio of 1-4: 1, and uniformly mixing the EVA resin and the polyolefin resin with an anti-aging agent accounting for 0.1-2% of the total weight of the resin by a high-speed mixer to obtain a mixed resin solution;
2) the PET substrate film is subjected to low-temperature plasma corona surface treatment to improve the surface tension of the PET substrate film;
3) melting and extruding the mixed resin solution obtained in the step 1) through an extruder to obtain an EVA hot melt layer, and laminating and compounding the EVA hot melt layer with the PET substrate film subjected to corona surface treatment in the step 2);
4) coating a tackifying coating on the EVA hot melt layer by gluing and roller coating, and drying to obtain the composite film with a three-layer structure.
The invention has the beneficial effects that:
1. the peeling strength of the original geothermal film is improved, the ageing resistance is improved, the polyolefin material is selected as the modified material, the modified geothermal film has excellent comprehensive properties such as high strength, high toughness, high electric insulation and high chemical corrosion resistance, the melting point of the geothermal film packaging film is improved, and the conditions such as bubbles and delamination are not easy to occur in later use.
2. And the adhesion strength of the film and heating materials such as graphene is enhanced by adding the tackifying coating.
Detailed Description
The present invention will be further described with reference to the following embodiments.
The invention provides a specific implementation mode of a far infrared geothermal packaging composite film, which comprises the following steps: the composite film is formed by laminating and compounding an EVA hot melting layer and a PET substrate film which is subjected to corona treatment, wherein the surface of the EVA hot melting layer is coated with a tackifying coating; the EVA hot-melt layer consists of EVA, polyolefin resin and an anti-aging agent, wherein the mass ratio of the EVA resin to the polyolefin resin is 2:1, and the mass fraction of the anti-aging agent is 0.2% of the total mass of the resin; the tackifying coating is a solution of graft modified hydrogenated tackifying resin. The thickness of the PET base material film is 75 μm; the thickness of the EVA hot melt layer is 75 μm. The polyolefin resin is LDPE.
The processing method of the novel composite membrane comprises the following steps:
(1) preparing anti-aging EVA/polyolefin resin: the anti-aging agent is benzophenone anti-aging agent, and the polyolefin resin is LDPE. The mass ratio of the EVA resin to the LDPE resin is 2:1, and the anti-aging agent is 0.2% (mass fraction of the total weight of the resin), and the EVA resin and the LDPE resin are uniformly mixed by a high-speed mixer.
(2) Surface treatment of the PET base material film: the PET substrate film needs to be processed by low-temperature plasma corona treatment to improve the surface tension. The thickness of the PET substrate film was 75 μm.
(3) And (3) performing melt extrusion on the anti-aging EVA/polyolefin resin through an extruder to obtain an anti-aging EVA/polyolefin film with the thickness of 75 microns, and laminating and compounding the anti-aging EVA/polyolefin film with the modified PET substrate film. And obtaining the anti-aging (EVA & polyolefin)/PET two-layer structure composite film.
(4) The hot-melt resin surface of the composite film is coated with a tackifying coating through a gluing roller and is dried through an oven.
(5) And finally, trimming and winding.
The following table shows the performance test data of the novel far infrared heat-seal packaging film:
from the test data it can be seen that:
1. the initial peel strength and the heat seal peel strength of the novel composite film are respectively 8N/3cm and 50N/3cm, which are far higher than the standards (3N/3cm and 25N/3cm) of the common composite film.
2. The yellowing index of the novel composite film in an ultraviolet radiation test is 1.8, which is far lower than the standard of the old and foreign index of 5. As further explained above, the novel composite film improves the initial peel strength of the original geothermal film, enhances the adhesive strength of the film and heating materials such as graphene, improves the anti-aging performance, and is more suitable for long-term use.
While the invention has been described in terms of its preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.
Claims (6)
1. A far infrared geothermal packaging composite film is characterized in that: the PET film is formed by laminating and compounding an EVA hot melting layer and a PET substrate film which is subjected to corona treatment, and a tackifying coating is coated on the surface of the EVA hot melting layer; the EVA hot-melt layer consists of EVA, polyolefin resin and an anti-aging agent, wherein the mass ratio of the EVA resin to the polyolefin resin is 1-4: 1, and the mass fraction of the anti-aging agent is 0.1-2% of the total mass of the resin; the tackifying coating is a solution of graft modified hydrogenated tackifying resin.
2. The far infrared geothermal packaging composite film according to claim 1, wherein: the thickness of the PET base material film is 50-150 μm; the thickness of the EVA hot melting layer is 50-150 mu m.
3. The far infrared geothermal packaging composite film according to claim 1, wherein: the polyolefin resin is one or more of polyvinyl chloride, polyethylene, polypropylene and polystyrene.
4. The far infrared geothermal packaging composite film according to claim 1, wherein: the anti-aging agent is an inorganic anti-aging agent and comprises talcum powder, calcium carbonate, titanium dioxide and carbon black.
5. The far infrared geothermal packaging composite film according to claim 1, wherein: the anti-aging agent is an organic anti-aging agent, and comprises salicylic acid esters, benzophenones, benzotriazoles and substituted acrylonitrile.
6. A processing method of a far infrared geothermal packaging composite film is characterized by mainly comprising the following steps:
1) preparing EVA resin and polyolefin resin in a mass ratio of 1-4: 1, and uniformly mixing the EVA resin and the polyolefin resin with an anti-aging agent accounting for 0.1-2% of the total weight of the resin by a high-speed mixer to obtain a mixed resin solution;
2) the PET substrate film is subjected to low-temperature plasma corona surface treatment to improve the surface tension of the PET substrate film;
3) melting and extruding the mixed resin solution obtained in the step 1) through an extruder to obtain an EVA hot melt layer, and laminating and compounding the EVA hot melt layer with the PET substrate film subjected to corona surface treatment in the step 2);
4) coating a tackifying coating on the EVA hot melt layer by gluing and roller coating, and drying to obtain the composite film with a three-layer structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910940509.7A CN111284097A (en) | 2019-09-30 | 2019-09-30 | Far infrared geothermal packaging composite film and processing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910940509.7A CN111284097A (en) | 2019-09-30 | 2019-09-30 | Far infrared geothermal packaging composite film and processing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111284097A true CN111284097A (en) | 2020-06-16 |
Family
ID=71021080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910940509.7A Pending CN111284097A (en) | 2019-09-30 | 2019-09-30 | Far infrared geothermal packaging composite film and processing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111284097A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1555396A (en) * | 2001-09-19 | 2004-12-15 | 埃克森美孚化学专利公司 | Adhesive components and methods of manufacture |
| CN1761729A (en) * | 2003-03-20 | 2006-04-19 | 埃克森美孚化学专利公司 | Adhesive compositions and method for selection thereof |
| CN105563981A (en) * | 2016-01-25 | 2016-05-11 | 宜兴市王者塑封有限公司 | Composite film for geothermal film packaging and preparation method thereof |
| CN106947099A (en) * | 2016-11-30 | 2017-07-14 | 宜兴市王者塑封有限公司 | A kind of ink print product composite membrane of high compound fastness and preparation method thereof |
| CN107254023A (en) * | 2017-06-26 | 2017-10-17 | 四会市邦得利化工有限公司 | Preparation method and application of graft modified tackifying resin |
| CN208327900U (en) * | 2018-04-16 | 2019-01-04 | 东莞市华一新材料科技有限公司 | A kind of PET pre-coating film |
| CN110172306A (en) * | 2019-06-11 | 2019-08-27 | 北京康得新功能材料有限公司 | A kind of carve characters pre-coating film and preparation process for in-mould injection |
-
2019
- 2019-09-30 CN CN201910940509.7A patent/CN111284097A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1555396A (en) * | 2001-09-19 | 2004-12-15 | 埃克森美孚化学专利公司 | Adhesive components and methods of manufacture |
| CN1761729A (en) * | 2003-03-20 | 2006-04-19 | 埃克森美孚化学专利公司 | Adhesive compositions and method for selection thereof |
| CN105563981A (en) * | 2016-01-25 | 2016-05-11 | 宜兴市王者塑封有限公司 | Composite film for geothermal film packaging and preparation method thereof |
| CN106947099A (en) * | 2016-11-30 | 2017-07-14 | 宜兴市王者塑封有限公司 | A kind of ink print product composite membrane of high compound fastness and preparation method thereof |
| CN107254023A (en) * | 2017-06-26 | 2017-10-17 | 四会市邦得利化工有限公司 | Preparation method and application of graft modified tackifying resin |
| CN208327900U (en) * | 2018-04-16 | 2019-01-04 | 东莞市华一新材料科技有限公司 | A kind of PET pre-coating film |
| CN110172306A (en) * | 2019-06-11 | 2019-08-27 | 北京康得新功能材料有限公司 | A kind of carve characters pre-coating film and preparation process for in-mould injection |
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Application publication date: 20200616 |