CN114605930A - Preparation method and processing method of multilayer PET antistatic silica gel protective film - Google Patents
Preparation method and processing method of multilayer PET antistatic silica gel protective film Download PDFInfo
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- CN114605930A CN114605930A CN202210149358.5A CN202210149358A CN114605930A CN 114605930 A CN114605930 A CN 114605930A CN 202210149358 A CN202210149358 A CN 202210149358A CN 114605930 A CN114605930 A CN 114605930A
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- pet
- silica gel
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 57
- 230000001681 protective effect Effects 0.000 title claims abstract description 57
- 239000000741 silica gel Substances 0.000 title claims abstract description 57
- 229910002027 silica gel Inorganic materials 0.000 title claims abstract description 57
- 238000002360 preparation method Methods 0.000 title claims abstract description 26
- 238000003672 processing method Methods 0.000 title claims abstract description 11
- 238000004519 manufacturing process Methods 0.000 claims abstract description 24
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 22
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000003851 corona treatment Methods 0.000 claims abstract description 18
- 239000011248 coating agent Substances 0.000 claims abstract description 13
- 238000000576 coating method Methods 0.000 claims abstract description 13
- 230000000694 effects Effects 0.000 claims abstract description 11
- 239000011347 resin Substances 0.000 claims abstract description 11
- 229920005989 resin Polymers 0.000 claims abstract description 11
- 238000001035 drying Methods 0.000 claims abstract description 10
- 239000003292 glue Substances 0.000 claims abstract description 10
- 238000005265 energy consumption Methods 0.000 claims abstract description 6
- 238000007689 inspection Methods 0.000 claims abstract description 6
- 230000007613 environmental effect Effects 0.000 claims abstract description 5
- -1 glycol ester Chemical class 0.000 claims abstract description 4
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000010030 laminating Methods 0.000 claims abstract description 4
- 239000002994 raw material Substances 0.000 claims abstract description 4
- 230000037303 wrinkles Effects 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 11
- 238000010892 electric spark Methods 0.000 claims description 6
- 239000010410 layer Substances 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 4
- 239000006227 byproduct Substances 0.000 claims description 4
- 239000003054 catalyst Substances 0.000 claims description 4
- 239000002985 plastic film Substances 0.000 claims description 4
- 229920006255 plastic film Polymers 0.000 claims description 4
- SLGGJMDAZSEJNG-UHFFFAOYSA-N 2-(2-hydroxyethoxy)ethanol;terephthalic acid Chemical compound OCCOCCO.OC(=O)C1=CC=C(C(O)=O)C=C1 SLGGJMDAZSEJNG-UHFFFAOYSA-N 0.000 claims description 3
- 108010025899 gelatin film Proteins 0.000 claims description 3
- 238000003475 lamination Methods 0.000 claims description 3
- 238000006116 polymerization reaction Methods 0.000 claims description 3
- 239000011241 protective layer Substances 0.000 claims description 3
- 239000000052 vinegar Substances 0.000 claims description 3
- 235000021419 vinegar Nutrition 0.000 claims description 3
- 239000013072 incoming material Substances 0.000 claims description 2
- 239000000758 substrate Substances 0.000 description 3
- 239000004033 plastic Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000002301 combined effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000002482 conductive additive Substances 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
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Classifications
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- 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
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/22—Plastics; Metallised plastics
- C09J7/25—Plastics; Metallised plastics based on macromolecular compounds obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds
- C09J7/255—Polyesters
-
- 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
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/12—Chemical modification
- C08J7/123—Treatment by wave energy or particle radiation
-
- 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
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- 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
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/10—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet
- C09J2301/12—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers
- C09J2301/122—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers the adhesive layer being present only on one side of the carrier, e.g. single-sided adhesive tape
-
- 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
- C09J2467/00—Presence of polyester
- C09J2467/006—Presence of polyester in the substrate
-
- 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
- C09J2483/00—Presence of polysiloxane
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Laminated Bodies (AREA)
- Coating Of Shaped Articles Made Of Macromolecular Substances (AREA)
Abstract
The invention discloses a preparation method of a multilayer PET antistatic silica gel protective film, which comprises the main components of terephthalic acid and glycol ester; a processing method of a preparation method of a multilayer PET antistatic silica gel protective film comprises the steps of firstly, preparing a PET protective film raw material; step two, preparing and inspecting a PET base film; step three, corona treatment; coating silica gel glue; step five, drying and curing; and step six, multilayer laminating processing. The invention can obtain PET resin by direct acetification, the production and manufacturing cost is low, and the products can be recycled; and the mechanical equipment project investment is small, the energy consumption is low, the environmental protection effect during preparation is improved, and the preparation quality of the multilayer PET antistatic silica gel protective film is ensured by performing non-wrinkle, non-scratch and non-pollution inspection on the manufactured PET protective film.
Description
Technical Field
The invention relates to the technical field of preparation of protective films, in particular to a preparation method and a processing method of a multilayer PET antistatic silica gel protective film.
Background
The PET material is developed by DuPont company in the early 70 s and is mainly used in industry, for example, the Coca Cola plastic bottle seen today is made of PET material, the PET material can be made into a protective film, the PET protective film can be used for protecting the surfaces of mobile phones and other electronic products, protecting the glass surface, insulating heat, resisting ultraviolet rays and the like, the silica gel PET protective film takes a plastic film or an aluminum-plastic composite material and the like as a base material, a low-viscosity pressure-sensitive adhesive is coated on one surface of the base material, the base material is made into a coiled material, and the coiled material is cut and attached to the surface of a section bar, so that the surface of the section bar can be effectively prevented from being scratched or polluted in the processes of extrusion molding, transportation, window forming and installation.
Through the retrieval, patent publication No. CN113583446A an antistatic silica gel protection film and preparation method thereof, antistatic silica gel protection film, including antistatic substrate, the complex film of setting on antistatic substrate and the antistatic silica gel layer of setting between antistatic substrate and complex film, by mass parts, antistatic silica gel layer includes: 60-100 parts of high-low stripping silica gel, 0.05-3.0 parts of antistatic agent, 0.05-3.0 parts of conductive additive, 0.1-3 parts of dispersing additive, 0.5-2.5 parts of cross-linking agent, 0.5-2.5 parts of anchoring agent, 0.5-2.5 parts of catalyst and 50-200 parts of solvent.
The existing protective film has the following defects:
1. the existing protective film does not have antistatic performance, good high-temperature resistance and high transparency, and the protective film base material is not subjected to wrinkle-free, scratch-free and dirt-free inspection during preparation of the protective film, so that the quality of the protective film eaten in base material production is easy to be unqualified.
2. When the existing protective film is prepared, the production and manufacturing cost is higher, and the product during preparation can not be recycled; the energy consumption is increased, and the environmental protection effect is not ideal.
Disclosure of Invention
The invention aims to provide a preparation method and a processing method of a multilayer PET antistatic silica gel protective film, which aim to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a process for preparing the antistatic multi-layer PET-protecting silica gel film features that its main components are terephthalic acid and glycol ester.
A processing method of a preparation method of a multilayer PET antistatic silica gel protective film comprises the steps of firstly, preparing a PET protective film raw material; step two, preparing and inspecting a PET base film; step three, corona treatment; coating silica gel glue; step five, drying and curing; step six, multilayer laminating processing:
in the first step, an experimenter adds the high-purity terephthalic acid and the ethylene glycol into an acetification reactor according to a relative proportion, under the actual effect of a catalyst, the high-purity terephthalic acid and the ethylene glycol can be converted into terephthalic acid diethylene glycol vinegar, then the PET resin can be obtained through polymerization reaction, and the direct acetification method has low production and manufacturing cost, and mainly any by-product of the acetification method can be recycled; the investment of mechanical equipment items is low, the energy consumption is low, and the environment-friendly effect during preparation is improved;
in the second step, an experimenter selects the PET resin in the first step, the PET resin is made into a PET base film, and the PET base film is inspected;
in the third step, one side of the PET base film material in the second step is subjected to corona treatment, and a foundation is laid for the subsequent glue coating work;
in the fourth step, an experimenter puts the corona PET base film into a coating production line, and coats one side of the PET base film with silica gel glue by utilizing coating equipment;
in the fifth step, the PET silica gel protective film coated in the fourth step can be directly dried by a drying device on a production line, the dried PET silica gel protective film is wound into a large mother roll according to the number of meters, and the wound mother roll is sent into a curing chamber for curing after being coded
And in the sixth step, the PET silica gel protective film is processed in a multilayer processing device, the PET silica gel protective film, the PE protective layer and the PET stripping film are synthesized into a multilayer lamination processing by the processing device to form a multilayer PET antistatic silica gel protective film, and the multilayer PET antistatic silica gel protective film can be cut into required specifications according to requirements after preparation.
Preferably, the selected PET base film in the second step must have good transparency, no wrinkles, no scratches, and no smudging, so that the incoming inspection must be careful to avoid affecting the quality of the subsequent processing due to the flaws of the PET base film.
Preferably, in the third step, the corona treatment requires a high-frequency and high-voltage power supply to be applied between the metal electrode and the corona treatment roller to cause the corona treatment roller to generate discharge, so that air is ionized to form a large amount of ozone, and simultaneously, the high-energy electric spark impacts the outer surface of the film, so that the outer surface of the plastic film is activated and added under the combined effect of the high-energy electric spark and the ozone, and the outer surface wet tension of the PET protective film can reach more than 52-56 mN/m or even higher through the corona treatment.
Preferably, the drying temperature in the fifth step is 30-60 ℃, and the PET silica gel protective film can be properly heated and cooled according to needs, but is not too high, so that the quality problem caused by the influence of high temperature on the PET silica gel protective film is avoided.
Compared with the prior art, the invention has the beneficial effects that:
the production and manufacturing of the silica gel PET protective film are direct acetification methods, the PET resin is manufactured by adopting the method, the production and manufacturing cost is low, and mainly any by-product of the acetification method can be recycled; and mechanical equipment project investment is few, and the energy consumption is low, has promoted the environmental protection effect during preparation, and the antistatic silica gel protection film of multilayer PET who prepares has antistatic to can make the PET protection film still have the good high temperature resistance performance and the high transparency of silica gel when having antistatic function, the accessible carries out no pincher trees, and no wiping flower, the inspection of no dirt guarantees multilayer PET antistatic silica gel protection film preparation quality to making the PET protection film.
Drawings
FIG. 1 is a flow chart of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1, an embodiment of the present invention:
example 1
A process for preparing the antistatic multi-layer PET-protecting silica gel film features that its main components are terephthalic acid and glycol ester.
A processing method of a preparation method of a multilayer PET antistatic silica gel protective film comprises the steps of firstly, preparing a PET protective film raw material; step two, preparing and inspecting a PET base film; step three, corona treatment; coating silica gel glue; step five, drying and curing; step six, multilayer laminating processing;
in the first step, an experimenter adds the high-purity terephthalic acid and the ethylene glycol into an acetification reactor according to a relative proportion, under the actual effect of a catalyst, the high-purity terephthalic acid and the ethylene glycol can be converted into terephthalic acid diethylene glycol vinegar, then the PET resin can be obtained through polymerization reaction, and the direct acetification method has low production and manufacturing cost, and mainly any by-product of the acetification method can be recycled; the investment of mechanical equipment items is low, the energy consumption is low, and the environmental protection effect during preparation is improved;
in the second step, an experimenter selects the PET resin in the first step, the PET resin is made into a PET base film, and the PET base film is inspected;
in the third step, one side of the PET base film material in the second step is subjected to corona treatment, and a foundation is laid for the subsequent glue coating work;
in the fourth step, an experimenter puts the corona PET base film into a coating production line, and coats one side of the PET base film with silica gel glue by utilizing coating equipment;
in the fifth step, the PET silica gel protective film coated in the fourth step can be directly dried by a drying device on a production line, the dried PET silica gel protective film is wound into a large mother roll according to the number of meters, and the wound mother roll is sent into a curing chamber for curing after being coded
And in the sixth step, the PET silica gel protective film is processed in a multilayer processing device, the PET silica gel protective film, the PE protective layer and the PET stripping film are synthesized into a multilayer lamination processing by the processing device to form a multilayer PET antistatic silica gel protective film, and the multilayer PET antistatic silica gel protective film can be cut into required specifications according to requirements after preparation.
Example 2
The selected PET base film in the step two needs to have good transparency, no crease, no scratch and no dirt, so that incoming material inspection must be careful to avoid influencing the quality of subsequent processing due to the flaw of the PET base film; in the third step, the corona treatment needs to apply a high-frequency and high-voltage power supply between the metal electrode and the corona treatment roller to enable the metal electrode to be in discharge, so that air is ionized to form a lot of ozone, meanwhile, high-energy electric sparks impact the outer surface of the film, the outer surface of the plastic film is in activation and can be added under the effect of the high-energy electric sparks, and the outer surface wet tension of the PET protective film can reach more than 52-56 mN/m and even higher through the corona treatment; and the drying temperature in the fifth step is between 30 and 60 ℃, the PET silica gel protective film can be properly heated and cooled according to the requirement, but the temperature is not too high, and the quality problem caused by the influence of high temperature on the PET silica gel protective film is avoided.
The details of the present invention are well known to those skilled in the art.
Finally, it is to be noted that: although the present invention has been described in detail with reference to examples, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (5)
1. A process for preparing the antistatic multi-layer PET-protecting silica gel film features that its main components are terephthalic acid and glycol ester.
2. A processing method of a preparation method of a multilayer PET antistatic silica gel protective film comprises the steps of firstly, preparing a PET protective film raw material; step two, preparing and inspecting a PET base film; step three, corona treatment; step four, coating silica gel glue; step five, drying and curing; step six, multilayer laminating processing; the method is characterized in that:
in the first step, an experimenter adds the high-purity terephthalic acid and the ethylene glycol into an acetification reactor according to a relative proportion, under the actual effect of a catalyst, the high-purity terephthalic acid and the ethylene glycol can be converted into terephthalic acid diethylene glycol vinegar, then the PET resin can be obtained through polymerization reaction, and the direct acetification method has low production and manufacturing cost, and mainly any by-product of the acetification method can be recycled; the investment of mechanical equipment items is low, the energy consumption is low, and the environmental protection effect during preparation is improved;
in the second step, the experimenter selects the PET resin in the first step, the PET resin is made into a PET base film, and the PET base film is inspected;
in the third step, one side of the PET base film material in the second step is subjected to corona treatment, and a foundation is laid for the subsequent glue coating work;
in the fourth step, an experimenter puts the corona PET base film into a coating production line, and coats one side of the PET base film with silica gel glue by utilizing coating equipment;
in the fifth step, the PET silica gel protective film coated in the fourth step can be directly dried by a drying device on a production line, the dried PET silica gel protective film is wound into a large mother roll according to the number of meters, and the wound mother roll is sent into a curing chamber for curing after being coded
In the sixth step, the PET silica gel protective film is processed in the multilayer processing equipment, the PET silica gel protective film, the PE protective layer and the PET stripping film are synthesized into a multilayer lamination processing by the processing equipment, 0.058PET protective film and 0.05PET stripping film are manufactured into the multilayer PET antistatic silica gel protective film, and the multilayer PET antistatic silica gel protective film can be cut into required specifications according to requirements after preparation.
3. The processing method of the preparation method of the multilayer PET antistatic silica gel protective film according to claim 2, characterized in that: the selected PET base film in the second step has to have good transparency, no wrinkle, no scratch and no dirt, so the incoming material inspection must be careful to avoid influencing the quality of the subsequent processing due to the flaw of the PET base film.
4. The processing method of the preparation method of the multilayer PET antistatic silica gel protective film according to claim 2, characterized in that: in the third step, the corona treatment needs to apply a high-frequency and high-voltage power supply between the metal electrode and the corona treatment roller to enable the metal electrode and the corona treatment roller to have discharge, so that air is ionized to form a lot of ozone, meanwhile, high-energy electric sparks impact the outer surface of the film, the outer surface of the plastic film is activated and can be added under the effect of the high-energy electric sparks, and the outer surface wet tension of the PET protective film can reach more than 52-56 mN/m and even higher through the corona treatment.
5. The processing method of the preparation method of the multilayer PET antistatic silica gel protective film according to claim 2, characterized in that: and the drying temperature in the fifth step is between 30 and 60 ℃, the PET silica gel protective film can be properly heated and cooled according to the requirement, but the temperature is not too high, and the quality problem caused by the influence of high temperature on the PET silica gel protective film is avoided.
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| CN202210149358.5A CN114605930A (en) | 2022-02-18 | 2022-02-18 | Preparation method and processing method of multilayer PET antistatic silica gel protective film |
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| CN202210149358.5A CN114605930A (en) | 2022-02-18 | 2022-02-18 | Preparation method and processing method of multilayer PET antistatic silica gel protective film |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101870189A (en) * | 2010-06-13 | 2010-10-27 | 上海北极熊文具胶带有限公司 | Fabrication process of multilayer PET (Polyethylene Terephthalate) protective film |
| CN203510855U (en) * | 2013-08-12 | 2014-04-02 | 钟小清 | Mirror protective film |
| CN109401655A (en) * | 2017-10-10 | 2019-03-01 | 东莞市纳利光学材料有限公司 | A kind of soft protective film of functional form and preparation method thereof |
| CN109957347A (en) * | 2019-03-29 | 2019-07-02 | 浙江欧仁新材料有限公司 | The preparation method of anti-static silica gel protective film |
| CN111704872A (en) * | 2020-06-29 | 2020-09-25 | 极天羽技术股份有限公司 | PU (polyurethane) adhesive protective film for display screen and preparation method thereof |
-
2022
- 2022-02-18 CN CN202210149358.5A patent/CN114605930A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101870189A (en) * | 2010-06-13 | 2010-10-27 | 上海北极熊文具胶带有限公司 | Fabrication process of multilayer PET (Polyethylene Terephthalate) protective film |
| CN203510855U (en) * | 2013-08-12 | 2014-04-02 | 钟小清 | Mirror protective film |
| CN109401655A (en) * | 2017-10-10 | 2019-03-01 | 东莞市纳利光学材料有限公司 | A kind of soft protective film of functional form and preparation method thereof |
| CN109957347A (en) * | 2019-03-29 | 2019-07-02 | 浙江欧仁新材料有限公司 | The preparation method of anti-static silica gel protective film |
| CN111704872A (en) * | 2020-06-29 | 2020-09-25 | 极天羽技术股份有限公司 | PU (polyurethane) adhesive protective film for display screen and preparation method thereof |
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