CN114163942A - Portable whiteboard film and preparation method thereof - Google Patents
Portable whiteboard film and preparation method thereof Download PDFInfo
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- CN114163942A CN114163942A CN202111584506.8A CN202111584506A CN114163942A CN 114163942 A CN114163942 A CN 114163942A CN 202111584506 A CN202111584506 A CN 202111584506A CN 114163942 A CN114163942 A CN 114163942A
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- 238000002360 preparation method Methods 0.000 title claims description 12
- 239000010410 layer Substances 0.000 claims abstract description 136
- 239000000853 adhesive Substances 0.000 claims abstract description 42
- 230000001070 adhesive effect Effects 0.000 claims abstract description 28
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000000741 silica gel Substances 0.000 claims abstract description 26
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 26
- 239000003292 glue Substances 0.000 claims abstract description 25
- 239000002346 layers by function Substances 0.000 claims abstract description 25
- 229920006267 polyester film Polymers 0.000 claims abstract description 14
- 210000002469 basement membrane Anatomy 0.000 claims abstract description 9
- 150000001875 compounds Chemical class 0.000 claims abstract description 8
- 210000004379 membrane Anatomy 0.000 claims abstract description 6
- 239000012528 membrane Substances 0.000 claims abstract description 6
- 238000000576 coating method Methods 0.000 claims description 52
- 239000011248 coating agent Substances 0.000 claims description 51
- 239000002987 primer (paints) Substances 0.000 claims description 42
- 239000002131 composite material Substances 0.000 claims description 38
- 239000000463 material Substances 0.000 claims description 30
- 229920002379 silicone rubber Polymers 0.000 claims description 29
- 238000005096 rolling process Methods 0.000 claims description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 229920002799 BoPET Polymers 0.000 claims description 18
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 17
- 239000004944 Liquid Silicone Rubber Substances 0.000 claims description 17
- 239000012790 adhesive layer Substances 0.000 claims description 17
- 229920002635 polyurethane Polymers 0.000 claims description 16
- 239000004814 polyurethane Substances 0.000 claims description 16
- 238000001035 drying Methods 0.000 claims description 13
- 238000001723 curing Methods 0.000 claims description 12
- 239000003973 paint Substances 0.000 claims description 12
- 239000004945 silicone rubber Substances 0.000 claims description 12
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 11
- 229920001971 elastomer Polymers 0.000 claims description 9
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 8
- 229910052731 fluorine Inorganic materials 0.000 claims description 8
- 239000011737 fluorine Substances 0.000 claims description 8
- 238000007756 gravure coating Methods 0.000 claims description 8
- 239000011247 coating layer Substances 0.000 claims description 7
- 238000003851 corona treatment Methods 0.000 claims description 7
- 239000000839 emulsion Substances 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 230000001678 irradiating effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 11
- 230000007547 defect Effects 0.000 abstract description 5
- 230000002441 reversible effect Effects 0.000 abstract description 2
- 239000004014 plasticizer Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 8
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- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 2
- 238000003848 UV Light-Curing Methods 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000003892 spreading Methods 0.000 description 2
- 230000007480 spreading Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- 230000000181 anti-adherent effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
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- 239000002184 metal Substances 0.000 description 1
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- 238000001556 precipitation Methods 0.000 description 1
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- 238000003860 storage Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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Images
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
- C09J7/29—Laminated material
-
- 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
- C09J7/50—Adhesives in the form of films or foils characterised by a primer layer between the carrier and the adhesive
-
- 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
- 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
- C09J2301/16—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the structure of the carrier layer
- C09J2301/162—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the structure of the carrier layer the carrier being a laminate constituted by plastic layers only
-
- 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
- C09J2433/00—Presence of (meth)acrylic polymer
- C09J2433/003—Presence of (meth)acrylic polymer in the primer coating
-
- 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
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Laminated Bodies (AREA)
Abstract
The utility model provides a portable whiteboard membrane, includes from last to writing functional layer, polyester film layer, compound glue film, basement membrane layer and the silica gel layer that sets gradually down, the top layer of basement membrane layer is equipped with first under coat, just the top surface and the compound glue film bonding of first under coat, the bottom surface of basement membrane layer is equipped with the second under coat, just the bottom surface and the silica gel layer bonding of second under coat, first under coat and second under coat are transparent primer layer, the top surface of writing the functional layer is equipped with the protection rete, the bottom surface on silica gel layer is equipped with from the type layer. Aiming at the defects in the prior art, the invention aims to provide a portable whiteboard film which can be repeatedly used and has a good writing effect, the whiteboard film is not easy to fall off after being fixed, no adhesive residue is generated after being uncovered, and no reverse adhesion is generated after being folded.
Description
Technical Field
The invention relates to the technical field of writing teaching aids, in particular to a portable whiteboard membrane and a preparation method thereof.
Background
The white board is a tool commonly used in daily life and work and study of people, and a water-based pen or an oil-based pen is used for writing on the white board and is easy to erase. Although the electronic writing board can replace the function of the whiteboard in some scenes, the electronic writing board is expensive and is not suitable for all occasions, for example, when in conference discussion, if the whiteboard is used for writing with a pen, the question can be more conveniently explained to the audience by writing and erasing. Generally, the white board is made of wood, metal and plastic, is fixed on the ground or a wall surface by a support or a hook, and has the defects of high manufacturing cost, large occupied space, difficulty in carrying, inconvenience in moving, incapability of replacing due to loss and the like.
The whiteboard film is actually a plastic film, and can realize the same writing and wiping functions as the whiteboard. The white board film is convenient to carry, can be rolled up for carrying, and can be unfolded on a table top or pasted on glass or a wall surface when in use. Compared with the problems of difficult carrying, large volume, large occupied space and the like of the white board, the white board film is popular with most people, but the existing white board films in the market still have a plurality of defects. Patents CN111154131A and CN111154419A disclose an eye-protecting white board film and a matte white board film, respectively, both of which are made by coating a writable coating on the surface of a PET substrate and coating an acrylic pressure-sensitive adhesive on the other surface; the white board film obtained by the method has the defects that firstly, the structure is too simple, the PET film is hard and easy to damage when being rolled, secondly, the writing experience on the pure PET film is very poor, thirdly, the back glue is easy to degum when being used by acrylic acid pressure-sensitive adhesive, and the back glue is easy to be anti-sticky after being rolled, so that the white board film cannot be reused and can only be disposable. Patent CN112046117A discloses an electrostatic erasable white board film, which is a PVC electrostatic layer arranged on the back of a PET film, and this method is intended to utilize the surface static electricity of PVC to adhere to a planar object, but this electrostatic adhesion is not firm and is easy to fall off when in use. Therefore, the existing white board film preparation technology needs to be effectively improved, and the problems that the white board film is easy to fall off, generates adhesive residues after being uncovered and cannot be reused are solved.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a portable whiteboard film which can be repeatedly used and has a good writing effect, the whiteboard film is not easy to fall off after being fixed, no adhesive residue is generated after being uncovered, and no reverse adhesion is generated after being folded.
The technical purpose of the invention is realized by the following technical scheme:
the utility model provides a portable whiteboard membrane, its characterized in that includes from last functional layer, polyester film layer, compound glue film, basement membrane layer and the silica gel layer of writing that sets gradually extremely down, the top layer of basement membrane layer is equipped with first under coat, just the top surface and the compound glue film bonding of first under coat, the bottom surface of basement membrane layer is equipped with the second under coat, just the bottom surface and the silica gel layer bonding of second under coat, first under coat and second under coat are transparent primer layer, the top surface of writing the functional layer is equipped with the protection rete, the bottom surface on silica gel layer is equipped with from the type layer.
The transparent primer layer is made of water-based acrylate emulsion, and the thickness of the transparent primer layer is 1-2 mu m.
The protective film layer is an electrostatic film, and the electrostatic film is a PE film or a PP film. The electrostatic film can be adsorbed on the outermost layer of the whiteboard film, so that the surface of the whiteboard film can be kept flat, and a writing function layer on the surface of the whiteboard film is protected from being damaged in the transportation process.
The writing functional layer is made of UV photocuring matte paint and has the thickness of 3-10 mu m. The UV photocuring matte coating is used as a raw material of the writing functional layer, and the prepared writing functional layer is good in flexibility, resistant to scraping and easy to clean.
The polyester film layer is a transparent PET film with the thickness of 25-75 mu m. The light transmission of the transparent PET film is good, the UV photocuring matte coating coated on the surface of the transparent PE film is relatively simple compared with that coated on the surface of the PVC film, the technical difficulty is reduced, and the coating formed on the surface of the transparent PET film is less prone to falling off.
The composite adhesive layer is a transparent adhesive layer made of polyurethane composite adhesive, and the thickness of the transparent adhesive layer is 12-28 micrometers. The polyurethane composite adhesive has good adhesion to PET materials and PVC materials, is not easy to turn yellow, and has high transparency.
The base film layer is a white PVC film with the thickness of 120 mu m-2.5 mm. The white PVC film containing the plasticizer is used, the proportion of the plasticizer contained in the white PVC film is 25-45%, the film material has certain elasticity and texture, writing on the white PVC film is not hard, the writing effect is good, the production cost can be reduced, and writing can be more highlighted by using the white PVC film substrate.
The silica gel layer is a viscous rubber layer made of bi-component self-adhesive liquid silicone rubber, and the thickness of the viscous rubber layer is 25-50 μm. The adhesive rubber layer has good adhesion effect on the surface of an object, can be adhered on the surface of a smooth object, and does not generate residues after being peeled off.
The release layer is a PET fluorine release film. The PET fluorine release layer can protect the white board film during transportation and can be quickly peeled from the bottom surface of the silica gel layer during use.
A preparation method of a portable white board film comprises the following steps;
s1: respectively preparing polyurethane composite glue for coating, self-adhesive liquid silicone rubber, UV (ultraviolet) light-cured matte coating and water-based acrylate primer coating in four material barrels, respectively stirring uniformly, standing for 10-20min for defoaming, and respectively using according to the following steps;
s2: coating a water-based acrylate primer on any one surface of a white PVC film by using a micro-gravure coating machine, passing through a multi-section oven at the temperature of 75-110 ℃, wherein the machine speed is 15-40m/min, drying and attaching the primer to the PVC film surface, thus preparing a second primer layer, and rolling;
s3: coating self-adhesive liquid silicone rubber on the release surface of the PET fluorine release film by using a scraper or a slit coater, passing through a multi-section oven at the temperature of 80-150 ℃, wherein the machine speed is 10-20m/min, drying and curing the liquid silicone rubber to obtain a silicone rubber layer covered on the release layer, attaching the silicone rubber layer to the second bottom coating layer surface of the coiled material in the step S2, and rolling;
s4: coating a water-based acrylate primer on the other surface of the PVC film of the coiled material in the step S3 by using a micro-gravure coating machine, passing through a multi-section oven with the temperature of 75-110 ℃, and the machine speed of 15-40m/min, so that the primer is dried and attached to the PVC film surface, thereby preparing a first primer layer, and rolling;
s5: carrying out corona treatment on any surface of the transparent PET film, coating polyurethane composite adhesive on the corona surface which is just treated by using a scraper or a slit coater, drying the composite adhesive by passing through a multi-section oven at the temperature of 80-120 ℃ at the machine speed of 10-30m/min to prepare a composite adhesive layer coated on the polyester film layer, and attaching the composite adhesive layer to the first bottom coating of the coiled material in the step S4 and rolling;
s6: performing corona treatment on the other surface of the transparent PET film of the coiled material in the step S5, coating UV light-cured matte paint on the corona surface which is just treated by using a micro-concave coating machine, passing through a multi-section oven at the temperature of 80-120 ℃ at the speed of 15-50m/min to dry the UV paint, irradiating by a UV lamp with the wavelength of 280-395nm, and adjusting the power of the UV lamp to enable the curing energy to reach 200-600mj/cm2Preparing a writing functional layer after the coating is solidified, attaching an electrostatic film on the surface of the writing functional layer, and rolling to prepare a mother roll of the white board film;
s7: and curing the mother roll for 48-72 hours at the temperature of 50-60 ℃, and then die-cutting the mother roll into sheets to obtain the portable white board film.
In conclusion, the invention has the following beneficial effects:
the white PVC film containing the plasticizer is used as the base film material of the white board film, and the film material has elasticity and better writing effect. But the plasticizer in the PVC film can be slowly separated out, and the adjacent layer can be adversely affected; therefore, the invention is provided with the bottom coatings made of the water-based acrylate emulsion on the top surface and the bottom surface of the base film layer, can isolate the plasticizer in the base film layer, and can prevent the plasticizer from causing adverse effects on the composite glue layer and the silica gel layer (so that the composite glue layer or the silica gel layer loses viscosity and falls off). The double-component self-adhesive liquid silicone rubber material is used as colloid on the surface of the white board film adhesive object, has good laminating effect, can not generate residue after being uncovered, can not be anti-adhesive during rolling up, and can be repeatedly used. The invention has low preparation cost, good writing and using effect and high economic benefit.
Drawings
Fig. 1 is a schematic structural view of the present invention.
In the figure: 1-protective film layer, 2-writing functional layer, 3-polyester film layer, 4-composite glue layer, 5-first bottom coating layer, 6-base film layer, 7-second bottom coating layer, 8-silica gel layer and 9-release layer.
Detailed Description
The invention is described in detail below with reference to the figures and examples.
It should be noted that all the directional terms such as "upper" and "lower" referred to herein are used with respect to the view of the drawings, and are only for convenience of description, and should not be construed as limiting the technical solution.
The utility model provides a portable whiteboard membrane, includes from last to writing functional layer 2, polyester film layer 3, compound glue film 4, base film layer 6 and the silica gel layer 8 that sets gradually down, the top layer of base film layer 6 is equipped with first under coat 5, just the top surface of first under coat 5 bonds with compound glue film 4, the bottom surface of base film layer 6 is equipped with second under coat 7, just the bottom surface of second under coat 7 bonds with silica gel layer 8, first under coat 5 and second under coat 7 are transparent primer layer, the top surface of writing functional layer 2 is equipped with protection rete 1, the bottom surface of silica gel layer 8 is equipped with from type layer 9.
The transparent primer layer is made of water-based acrylate emulsion, and the thickness of the transparent primer layer is 1-2 mu m. The water-based acrylate emulsion used as the primer can improve the adhesive force of the surface of the PVC film, and isolates the PVC film from the composite adhesive layer 4 and the silica gel layer 8, so as to prevent adverse effects caused by precipitation of a plasticizer in the PVC film (the plasticizer has a large influence on the adhesive force of the silicone rubber and the polyurethane composite adhesive, the silica gel layer 8 may lose viscosity and fall off after the plasticizer permeates into the silicone rubber, and the polyester film layer 3 and the base film layer 6 may be separated due to the loss of viscosity of the composite adhesive layer 4 after the plasticizer permeates into the polyurethane composite adhesive.
The protective film layer 1 is an electrostatic film, and the electrostatic film is a PE film or a PP film. The electrostatic film can prevent the white board film from being scratched or collided in the process of storage or transportation, and the surface of the white board film is kept flat.
The writing functional layer 2 is made of UV photo-curing matte paint, and the thickness is 3-10 mu m. The UV photocuring matte coating has the advantages of easiness in cleaning and wiping, good flexibility, scratch resistance and wear resistance, and is a UV-6001 series product preferably produced by Guangdong solid chemistry.
The polyester film layer 3 is a transparent PET film with the thickness of 25-75 μm. The transparent PET film has good light transmittance which can reach 90-92%, the transparent PET film is relatively simple to coat the UV light-cured matte coating, and the writing functional layer 2 formed by the UV light-cured matte coating is not easy to fall off.
The composite adhesive layer 4 is a transparent adhesive layer made of polyurethane composite adhesive, and the thickness of the transparent adhesive layer is 12-28 micrometers. The composite glue layer 4 is mainly used for bonding an upper film layer and a lower film layer, and the laminating glue made of polyurethane composite glue has good adhesion to PET materials and PVC materials, high transparency and difficult yellowing. The polyurethane composite adhesive preferably adopts UC-1208 series products produced by Guangdong Pont solid chemical and PN-3131TL and PN-3135TL models produced by Huizhou Changtai chemical.
The base film layer 6 is a white PVC film with the thickness of 120 mu m-2.5 mm. The white PVC film adopted by the invention is a white PVC film containing a plasticizer, the proportion of the plasticizer contained in the white PVC film is 25-45%, the film material has certain elasticity and texture, writing on the white PVC film is not hard, the writing effect is good, the production cost can be reduced, and writing can be more highlighted by using the white PVC film substrate.
The silica gel layer 8 is an adhesive rubber layer made of bi-component self-adhesive liquid silica rubber, and the thickness of the adhesive rubber layer is 25-50 μm. The adhesive rubber layer made of the self-adhesive liquid silicone rubber has the advantages of good attaching and adsorbing effects, easiness in stripping and the like, and the self-adhesive liquid silicone rubber preferably adopts watt-grade ELASTOSIL LR3178CN and LR3140CN or Mojjen LSR2739, LSR2759 and other types of products.
The release layer 9 is a PET fluorine release film. The release layer 9 can not be worn in the process of rolling, storing or transporting the whiteboard film, and the sticky surface of the exposed silica gel layer 8 can be peeled off from the silica gel surface when the whiteboard is used.
The preparation method comprises the following steps:
a preparation method of a portable white board film comprises the following steps;
s1: respectively preparing polyurethane composite glue for coating, self-adhesive liquid silicone rubber, UV (ultraviolet) light-cured matte coating and water-based acrylate primer coating in four material barrels, respectively stirring uniformly, standing for 10-20min for defoaming, and respectively using according to the following steps;
s2: coating a water-based acrylate primer on any one surface of the white PVC film by using a micro-gravure coating machine, passing through a multi-section oven at the temperature of 75-110 ℃, wherein the machine speed is 15-40m/min, drying and attaching the primer to the PVC film surface to prepare a second primer layer 7, and rolling;
s3: coating self-adhesive liquid silicone rubber on a release surface of the PET fluorine release film by using a scraper or a slit coater, passing through a multi-section oven at the temperature of 80-150 ℃, wherein the machine speed is 10-20m/min, drying and curing the liquid silicone rubber to obtain a silicone rubber layer 8 covered on a release layer 9, then attaching the silicone rubber layer 8 to the second bottom coating layer 7 surface of the coiled material in the step S2, and rolling;
s4: coating a water-based acrylate primer on the other surface of the PVC film of the coiled material in the step S3 by using a micro-gravure coating machine, passing through a multi-section oven with the temperature of 75-110 ℃, and the machine speed of 15-40m/min, so that the primer is dried and attached to the PVC film surface, thereby preparing a first primer layer 5, and rolling;
s5: carrying out corona treatment on any side of the transparent PET film, coating polyurethane composite adhesive on the corona surface which is just treated by using a scraper or a slit coater, passing through a multi-section oven with the temperature of 80-120 ℃ and the machine speed of 10-30m/min, drying the composite adhesive to prepare a composite adhesive layer 4 covering the polyester film layer 3, and attaching the composite adhesive layer 4 to the first bottom coating layer 5 of the coiled material in the step S4 and rolling;
s6: for step S5Corona treatment is carried out on the other surface of the transparent PET film of the medium coiled material, a micro-concave coating machine is used for coating UV light curing matte paint on the corona surface which is just treated, the UV light curing matte paint passes through a multi-section oven with the temperature of 80-120 ℃, the machine speed is 15-50m/min, the UV paint is dried, then a UV lamp with the wavelength of 280-395nm is used for irradiation, the power of the UV lamp is adjusted, and the curing energy reaches 200-600mj/cm2Preparing a writing functional layer 2 after the coating is solidified, attaching an electrostatic film on the surface of the writing functional layer 2, and rolling to prepare a mother roll of the white board film;
s7: and curing the mother roll for 48-72 hours at the temperature of 50-60 ℃, and then die-cutting the mother roll into sheets to obtain the portable white board film.
Specific examples of the preparation method of the present invention
S1: respectively preparing polyurethane composite glue for coating, self-adhesive liquid silicone rubber, UV (ultraviolet) light-cured matte coating and water-based acrylate primer coating in four material barrels, respectively stirring uniformly, standing for 20min for defoaming, and respectively using according to the following steps;
s2: coating a water-based acrylate primer on any one surface of a white PVC film with the thickness of 1mm by using a micro-gravure coating machine, passing through a multi-section oven with the temperature of 75-110 ℃, wherein the machine speed is 30m/min, so that the primer is dried and attached to the PVC film surface, and thus a second primer layer 7 is prepared, the coating thickness is 1.5 mu m, and the second primer layer is rolled and unfolded when the next preparation process is carried out;
s3: coating self-adhesive liquid silicone rubber on a release surface of the PET fluorine release film by using a scraper or a slit coater, passing through a multi-section oven at the temperature of 80-150 ℃, wherein the machine speed is 15m/min, drying and curing the liquid silicone rubber to prepare a silicone rubber layer 8 covered on a release layer 9, wherein the thickness of the silicone rubber layer is 35 mu m, then attaching the silicone rubber layer 8 to the second bottom coating 7 surface of the coiled material in the step S2, rolling, and unfolding when preparing the next working procedure;
s4: coating a water-based acrylate primer on the other surface of the PVC film of the coiled material in the step S3 by using a micro-gravure coating machine, drying and attaching the primer on the PVC film surface by passing through a multi-section oven at the temperature of 75-110 ℃ at the machine speed of 30m/min to prepare a first primer layer 5, wherein the thickness of the coating is 1.5 mu m, rolling and spreading when the next preparation process is carried out;
s5: carrying out corona treatment on any surface of a transparent PET film with the thickness of 50 micrometers, coating polyurethane composite adhesive on the corona surface which is just treated by using a scraper or a slit coater, passing through a multi-section oven with the temperature of 80-120 ℃, wherein the machine speed is 20m/min, drying the composite adhesive, thus preparing a composite adhesive layer 4 coated on the polyester film layer 3, the thickness of the adhesive layer is 20 micrometers, and attaching the composite adhesive layer 4 to a first bottom coating layer 5 of the coiled material in the step S4, rolling and unfolding when the next step is prepared;
s6: performing corona treatment on the other surface of the transparent PET film of the coiled material in the step S5, coating UV light-cured matte paint on the corona surface which is just treated by using a micro-concave coating machine, passing through a multi-section oven at the temperature of 80-120 ℃, wherein the machine speed is 30m/min, drying the UV paint, irradiating by a UV lamp with the wavelength of 365nm, and adjusting the power of the UV lamp to ensure that the curing energy reaches 400mj/cm2Preparing a writing functional layer 2 after the coating is solidified, wherein the thickness of the coating is 5 microns, adhering an electrostatic film on the surface of the writing functional layer 2, rolling to prepare a mother roll of the white board film, and spreading when preparing the next working procedure;
s7: and (3) curing the mother roll for 60 hours at the temperature of 60 ℃, and then die-cutting the mother roll into sheets to obtain the portable white board film.
In this embodiment: the thickness of the writing functional layer is 5 μm, the thickness of the polyester film layer is 50 μm, the thickness of the composite glue layer is 20 μm, the thickness of the first primer layer is 1.5 μm, the thickness of the base film layer is 1mm, the thickness of the second primer layer is 1.5 μm, and the thickness of the silica gel layer is 35 μm, so the overall thickness of the film material is 1113 μm.
The use process of the invention is as follows:
firstly, unfolding a curled white board film, peeling off a release layer 9 of the white board film to expose a sticky silica gel layer 8 of the white board film, and aligning the silica gel layer 8 of the white board film to an object to be pasted; tearing off the protective film layer 1 on the top surface of the whiteboard film to expose the writing functional layer 2 capable of writing; writing was performed using an oil pen or a water pen. When the white board film needs to be removed, the white board film can be removed only by uncovering the bonding part of the silica gel layer 8 and the surface of the object, and the white board film is rolled up for transportation.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (10)
1. The utility model provides a portable whiteboard membrane, its characterized in that includes from last writing functional layer (2), polyester film layer (3), compound glue film (4), basement membrane layer (6) and silica gel layer (8) that set gradually extremely down, the top layer of basement membrane layer (6) is equipped with first under coat (5), just the top surface and the compound glue film (4) bonding of first under coat (5), the bottom surface of basement membrane layer (6) is equipped with second under coat (7), just the bottom surface and the silica gel layer (8) bonding of second under coat (7), first under coat (5) and second under coat (7) are transparent primer layer, the top surface of writing functional layer (2) is equipped with protection rete (1), the bottom surface of silica gel layer (8) is equipped with from type layer (9).
2. The portable whiteboard film of claim 1, wherein the transparent primer layer is made of a water-based acrylate emulsion, and the thickness of the transparent primer layer is 1-2 μm.
3. The portable whiteboard film of claim 1, wherein the protective film layer (1) is an electrostatic film, and the electrostatic film is a PE film or a PP film.
4. The portable whiteboard film of claim 1, wherein the writing functional layer (2) is made of UV light-cured matte paint and has a thickness of 3-10 μm.
5. The portable whiteboard film of claim 1, wherein the polyester film layer (3) is a transparent PET film having a thickness of 25-75 μm.
6. The portable whiteboard film of claim 1, wherein the composite glue layer (4) is a transparent adhesive glue layer made of polyurethane composite glue, and the thickness of the transparent adhesive glue layer is 12-28 μm.
7. The portable whiteboard film of claim 1, wherein the base film layer (6) is a white PVC film having a thickness of 120 μm-2.5 mm.
8. The portable whiteboard membrane of claim 1, wherein the silicone rubber layer (8) is an adhesive rubber layer made of two-component self-adhesive liquid silicone rubber, and the thickness of the adhesive rubber layer is 25-50 μm.
9. The portable whiteboard film of claim 1, wherein the release layer (9) is a PET fluorine release film.
10. A preparation method of a portable white board film is characterized by comprising the following steps;
s1: respectively preparing polyurethane composite glue for coating, self-adhesive liquid silicone rubber, UV (ultraviolet) light-cured matte coating and water-based acrylate primer coating in four material barrels, respectively stirring uniformly, standing for 10-20min for defoaming, and respectively using according to the following steps;
s2: coating a water-based acrylate primer on any one surface of a white PVC film by using a micro-gravure coating machine, passing through a multi-section oven at the temperature of 75-110 ℃, wherein the machine speed is 15-40m/min, drying the primer and attaching the primer to the PVC film surface, thus preparing a second primer layer (7), and rolling;
s3: coating self-adhesive liquid silicone rubber on a release surface of the PET fluorine release film by using a scraper or a slit coater, passing through a multi-section oven at the temperature of 80-150 ℃, wherein the machine speed is 10-20m/min, drying and curing the liquid silicone rubber to obtain a silicone rubber layer (8) covered on the release layer (9), then attaching the silicone rubber layer (8) to the second bottom coating (7) surface of the coiled material in the step S2, and rolling;
s4: coating a water-based acrylate primer on the other surface of the PVC film of the coiled material in the step S3 by using a micro-gravure coating machine, passing through a multi-section oven with the temperature of 75-110 ℃, and the machine speed of 15-40m/min, so that the primer is dried and attached to the PVC film surface, thereby preparing a first primer layer (5), and rolling;
s5: carrying out corona treatment on any side of the transparent PET film, coating polyurethane composite adhesive on the corona surface which is just treated by using a scraper or a slit coater, drying the composite adhesive by passing through a multi-section oven at the temperature of 80-120 ℃ at the machine speed of 10-30m/min to prepare a composite adhesive layer (4) coated on the polyester film layer (3), and attaching and rolling the composite adhesive layer (4) and the first bottom coating layer (5) of the coiled material in the step S4;
s6: performing corona treatment on the other surface of the transparent PET film of the coiled material in the step S5, coating UV light-cured matte paint on the corona surface which is just treated by using a micro-concave coating machine, passing through a multi-section oven at the temperature of 80-120 ℃ at the speed of 15-50m/min to dry the UV paint, irradiating by a UV lamp with the wavelength of 280-395nm, and adjusting the power of the UV lamp to enable the curing energy to reach 200-600mj/cm2Preparing a writing functional layer (2) after the coating is solidified, adhering an electrostatic film on the surface of the writing functional layer (2), and rolling to prepare a mother roll of the white board film;
s7: and curing the mother roll for 48-72 hours at the temperature of 50-60 ℃, and then die-cutting the mother roll into sheets to obtain the portable white board film.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115570871A (en) * | 2022-09-06 | 2023-01-06 | 浙江宇立新材料有限公司 | Production process of recyclable environment-friendly composite material |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201086533Y (en) * | 2007-08-17 | 2008-07-16 | 苏州东永电子有限公司 | Multifunctional writing pad pasting |
| WO2013104168A1 (en) * | 2012-01-09 | 2013-07-18 | 东莞中世拓实业有限公司 | Conveniently reusable soft whiteboard |
| CN113736029A (en) * | 2021-08-25 | 2021-12-03 | 无锡洪汇新材料科技股份有限公司 | Vinyl chloride copolymer emulsion with core-shell structure and preparation method thereof |
-
2021
- 2021-12-22 CN CN202111584506.8A patent/CN114163942A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201086533Y (en) * | 2007-08-17 | 2008-07-16 | 苏州东永电子有限公司 | Multifunctional writing pad pasting |
| WO2013104168A1 (en) * | 2012-01-09 | 2013-07-18 | 东莞中世拓实业有限公司 | Conveniently reusable soft whiteboard |
| CN113736029A (en) * | 2021-08-25 | 2021-12-03 | 无锡洪汇新材料科技股份有限公司 | Vinyl chloride copolymer emulsion with core-shell structure and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115570871A (en) * | 2022-09-06 | 2023-01-06 | 浙江宇立新材料有限公司 | Production process of recyclable environment-friendly composite material |
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