CN112552835A - Light bright self-adhesion type environmental protection film - Google Patents
Light bright self-adhesion type environmental protection film Download PDFInfo
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- CN112552835A CN112552835A CN202011362865.4A CN202011362865A CN112552835A CN 112552835 A CN112552835 A CN 112552835A CN 202011362865 A CN202011362865 A CN 202011362865A CN 112552835 A CN112552835 A CN 112552835A
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- 230000007613 environmental effect Effects 0.000 title claims description 6
- 230000001681 protective effect Effects 0.000 claims abstract description 35
- 239000000853 adhesive Substances 0.000 claims abstract description 29
- 229920001971 elastomer Polymers 0.000 claims abstract description 25
- 239000000806 elastomer Substances 0.000 claims abstract description 25
- 229920001684 low density polyethylene Polymers 0.000 claims abstract description 13
- 239000004702 low-density polyethylene Substances 0.000 claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 claims abstract description 12
- 229920000034 Plastomer Polymers 0.000 claims abstract description 10
- 239000000126 substance Substances 0.000 claims abstract description 7
- 229920000092 linear low density polyethylene Polymers 0.000 claims abstract description 5
- 239000004707 linear low-density polyethylene Substances 0.000 claims abstract description 5
- 238000002156 mixing Methods 0.000 claims abstract description 4
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical group C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims abstract 2
- 239000000463 material Substances 0.000 claims description 21
- 238000010096 film blowing Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000001125 extrusion Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 4
- 238000004804 winding Methods 0.000 claims description 3
- 239000010410 layer Substances 0.000 abstract description 57
- 239000002904 solvent Substances 0.000 abstract description 17
- 239000003292 glue Substances 0.000 abstract description 7
- 239000012790 adhesive layer Substances 0.000 abstract description 6
- 239000011230 binding agent Substances 0.000 abstract description 4
- 238000003912 environmental pollution Methods 0.000 abstract description 4
- 238000003860 storage Methods 0.000 abstract description 3
- 229920005989 resin Polymers 0.000 description 11
- 239000011347 resin Substances 0.000 description 11
- 238000012360 testing method Methods 0.000 description 7
- 229920001862 ultra low molecular weight polyethylene Polymers 0.000 description 5
- 239000004698 Polyethylene Substances 0.000 description 4
- 239000002313 adhesive film Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- -1 polyethylene Polymers 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 239000002861 polymer material Substances 0.000 description 3
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000012546 transfer Methods 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
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000004840 adhesive resin Substances 0.000 description 1
- 229920006223 adhesive resin Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011127 biaxially oriented polypropylene Substances 0.000 description 1
- 229920006378 biaxially oriented polypropylene Polymers 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006353 environmental stress Effects 0.000 description 1
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- 238000011056 performance test Methods 0.000 description 1
- 229920001639 plastic brand Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000037303 wrinkles Effects 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
- C09J7/29—Laminated material
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/064—VLDPE
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/066—LDPE (radical process)
-
- 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
- C09J2423/00—Presence of polyolefin
- C09J2423/04—Presence of homo or copolymers of ethene
- C09J2423/046—Presence of homo or copolymers of ethene in the substrate
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Laminated Bodies (AREA)
Abstract
The invention relates to a light transparent self-adhesive environment-friendly protective film. The existing protective film is characterized in that a layer of glue is coated on the surface of the film to serve as a binder to bond and protect a product, and due to the instability of the binder, the problems of residual glue and difficulty in tearing off can occur along with the storage time and weather season of the product. The invention is characterized in that the invention is a three-layer structure, the outer layer is a self-adhesive layer formed by combining a low-density polyethylene elastomer and an ultra-low-density elastomer, the middle layer is LDPE, the inner layer is LLDPE, the self-adhesive layer is prepared by mixing a plastomer brand number 1140G and an elastomer 8200G produced by the Dow chemical company, wherein the ratio of the plastomer to the elastomer is 100: 20. The invention does not use solvent in the blown film production process, and can effectively solve the problem of environmental pollution caused by solvent discharge, solvent residue and the like.
Description
Technical Field
The invention relates to a light transparent self-adhesive environment-friendly protective film.
Background
With the development of economy in China, particularly real estate, building decoration materials and electronic and electric products are rapidly increased. In building decoration materials, such as base material ceiling boards, aluminum plastic plates, stainless steel plates, integrated wall boards, cabinet kitchen doors, floors, floor tiles, galvanized plates, household appliances, electronic components and the like, a large amount of protective films are needed to protect the surfaces of the products, so that the loss of surface scratches of the products in the processes of transportation, carrying, storage, display, use and installation in the circulation link from factories to markets is reduced. The protective film has a huge market and usage.
The protective film used in the present stage is mainly a gumming type protective film produced by a coating process, is prepared by dissolving an acrylic acid adhesive by using a solvent such as ethyl acetate, butanone and toluene as a main solvent, uniformly coating the surface of a base material such as BOPP, PET, PE and the like through a gravure screen line roller, drying and volatilizing the solvent coated on the surface of the base material through heating of a drying channel, and rolling. However, the protective film produced by this process has a great problem. Since a large amount of solvent is used in the production process of the protective film of this type, the emission of the solvent causes serious pollution to the workshop environment and air, which causes a significant environmental problem. Meanwhile, the protective film is formed by coating a layer of glue on the surface of the film to serve as a binder to bond and protect a product, and due to the instability of the binder, the problems of residual glue and difficulty in tearing off can occur along with the storage time and weather season of the product. In addition, a certain amount of solvent remains in the production of the solvent-based adhesive protective film, which can cause the problems of secondary pollution and the like after installation and use, so that the protective film can cause a large amount of scrapped products and loss every year after use.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a light, transparent and self-adhesive environment-friendly protective film, which not only can solve the environmental pollution caused by solvent discharge and solvent residue, meet the high and new industrial policies of China, but also can solve the problems of residual glue and difficult tearing after use.
Therefore, the invention adopts the following technical scheme: a light, transparent and self-adhesive type environment-friendly protective film is characterized by having a three-layer structure, wherein the outer layer is a self-adhesive material layer formed by combining a low-density polyethylene elastomer and an ultra-low-density elastomer, the middle layer is LDPE, the inner layer is LLDPE, and the self-adhesive material layer is prepared by mixing a plastomer with the trademark of 1140G and an elastomer of 8200G, which are produced by the Dow chemical company, wherein the ratio of the plastomer to the elastomer is 100: 20.
The thickness ratio of the outer layer to the middle layer to the inner layer is 10%: 45%: 45 percent.
The outer layer, the middle layer and the inner layer are melted and extruded by a co-extrusion film blowing machine and are formed by internal cooling traction and winding, wherein the extruder adopted by the middle layer adopts five sections for heating, and the temperature is respectively controlled at 150 ℃, 155 ℃, 160 ℃, 165 ℃ and 165 ℃; the die head of the inner layer is heated in four sections, the temperature is respectively controlled at 165 ℃, 165 ℃ and 160 ℃, and the blow-up ratio is controlled between 10 and 18.
The extruder adopted by the inner layer adopts five-section heating, and the temperature of the five sections is controlled to be 135 ℃, 140 ℃, 145 ℃ and 145 ℃.
The self-adhesion of the invention is mainly realized by low-density elastomers and ultra-low-density elastomers, and is a high polymer material. The three layers of materials can be completely bonded together through melting and plasticizing to form a whole, low molecular substances are not separated out, and glue layer transfer is not generated. In addition, no solvent is used in the blown film production process, so that the problem of environmental pollution caused by solvent discharge, solvent residue and the like can be effectively solved. The composite material can be applied to a plurality of fields such as stainless steel plates, aluminum materials, building materials, electronic and electric appliance materials, plastic plates and the like, and has very wide market prospect.
The main beneficial effects are as follows:
1. the obtained self-adhesive protective film has good compatibility and high adhesion among layers. Meanwhile, the protective film is produced by adopting a high polymer material, and has the advantages of no transfer, no degumming and excellent optical transparency. The low molecular substances can not be separated out and volatilized, and the environment-friendly effect is good.
2. The environment-friendly self-adhesive protective film produced by the film blowing process has good universality and can be suitable for surface adhesion of bright, high-gloss and matte materials.
3. The film is prepared by blowing three layers of films, wherein the three layers respectively provide different performances of the protective film, the outer layer can provide a self-adhesive layer with good self-adhesiveness, the middle layer provides stretch resistance, and the inner layer provides film strength, stiffness and the like. Meanwhile, the three layers have good optical transparency and good compatibility and adhesion among the three layers.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Detailed Description
The present invention is described in further detail below with reference to the attached drawing figures.
The light transparent self-adhesive type environment-friendly protective film as shown in figure 1 is of a three-layer structure, the outer layer is a self-adhesive material layer 1 formed by combining a low-density polyethylene elastomer and an ultra-low-density elastomer, the middle layer 2 is LDPE, the inner layer 3 is LLDPE, and the self-adhesive material layer is prepared by mixing a plastomer brand number of 1140G and an elastomer 8200G which are produced by the Dow chemical company, wherein the ratio of the plastomer to the elastomer is 100: 20. The thickness ratio of the outer layer to the middle layer to the inner layer is 10%: 45%: 45 percent.
The production method of the light transparent self-adhesive environment-friendly protective film comprises the following steps: melting and extruding the resin from the outer layer, the middle layer and the inner layer through a co-extrusion film blowing machine, and carrying out internal cooling traction and winding to obtain the composite material, wherein the extruder adopted by the middle layer adopts five sections for heating, and the temperature is controlled to be 150 ℃, 155 ℃, 160 ℃, 165 ℃ and 165 ℃ respectively; the die head of the inner layer is heated in four sections, the temperature is respectively controlled at 165 ℃, 165 ℃ and 160 ℃, and the blow-up ratio is controlled between 10 and 18. The extruder adopted by the inner layer adopts five-section heating, and the temperature of the five sections is controlled to be 135 ℃, 140 ℃, 145 ℃ and 145 ℃.
The inflation ratio is the transverse expansion multiple of the film, and the film is stretched transversely, so that the stretching can generate a certain degree of orientation effect on the polymer chains, the inflation ratio is increased, the film becomes thin, the product is hardened, the cooling time is prolonged, and the cost is increased. In general, the blow-up ratio of Low Density Polyethylene (LDPE) film should be controlled between 2.5 and 3.0. However, in actual production, performance tests of products with different inflation ratios are carried out, and the results show that when the inflation ratio is 2.5-3.0, the transparency of the film is poor, the stiffness of the film is not enough, and the film is easy to wrinkle when being rolled, and when the inflation ratio is increased to 4-6 times, the problem of transparency is solved, the hardness of the film is increased, and the rolling is smooth during production.
The self-adhesion control of the self-adhesion protective film is a technical key control point of the project, the outer layer resin of the self-adhesion protective film is selected from a low-density polyethylene elastomer (ULDPE) and an ultra-low-density polyethylene elastomer (AD tackifying resin), the density of the low-density polyethylene elastomer (ULDPE) is 0.890-0.915 g/cc, the ultra-low-density polyethylene elastomer (AD tackifying resin) is less than 0.890 g/cc, the lower the density of the resin is, the higher the self-adhesion of the resin is, the lower the density of the resin is, the higher the flexibility, the toughness and the environmental stress crack resistance are, in order to achieve the proper viscosity of the self-adhesion protective film, a large number of proportioning tests are carried out, the formulas of the ULDPE resin and the AD tackifying resin are adjusted, meanwhile, the temperature of an extruder is controlled to be in the optimal state, because the general melting temperature of the resin as an ultra-low-density material cannot be, the temperature of the five sections of the extruder is controlled to be between 135 ℃, 140 ℃, 145 ℃ and 145 ℃. As the materials of the test protective film, a plastic brand 1140G (with the density of 0.897G/cm3) and an elastomer brand 8200G (with the density of 0.87G/cm3) manufactured by the Dow chemical company of America are selected, and the test results of different proportions are as follows:
TABLE 11140G/8200G ratio and cohesive force effect
According to the results of detecting the viscosity data of sample products with different proportions and adhering the sample to the protective film of the integrated ceiling board, the self-adhesive protective film has the advantage that the self-adhesive force of the self-adhesive protective film obviously improves the cost and performance requirements of combining the plastic body 1140G and the elastic body 8200G along with the increase of the proportion of the elastic body 8200G. The product of the item is determined to have a suitable ratio of 100:20 for plastomer 1140G and elastomer 8200G.
In order to ensure the quality of the self-adhesive protective film and control the production cost, a layer thickness proportion test of the three-layer co-extruded film is also tested, wherein the proportion test of 30%, 20% and 10% is carried out on the layer thickness of a self-adhesive layer (outer layer) with the ratio of a plastic body 1140G and an elastic body 8200G being 100:20, and the test results are as follows:
TABLE 2 thickness ratio of self-adhesive layer and adhesion Effect
The test result shows that the influence of the thickness of the self-adhesive layer of the self-adhesive film on the adhesive force of the self-adhesive film is small, because the viscosity of the self-adhesive film is mainly reflected on the surface of the self-adhesive film and is determined by the characteristics of resin, and the layer thickness proportion of the three-layer co-extrusion self-adhesive protective film is determined to be 10% of the outer layer, 45% of the middle layer and 45% of the inner layer by considering the minimum control requirement of the extrusion amount of each layer of the extruder and the quality of the film. Therefore, the strength, toughness, rigidity and transparency of the film can be ensured, the self-adhesion of the film can be ensured, and the lowest production cost can be achieved.
The self-adhesive protective film developed and produced by the project is directly completed through integration of a film blowing process, a large amount of protective films produced by a glue coating process used in the market are replaced, no solvent is used in the production process of the self-adhesive protective film produced by the film blowing process, no solvent is discharged and remained, the self-adhesive protective film is composed of high polymer materials such as LLDPE and LDPE, adhesive resin such as polyethylene plastomer and polyethylene elastomer, and a polyethylene film is a recyclable and reusable material and cannot cause environmental pollution and environmental protection problems.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.
Claims (4)
1. A light, transparent and self-adhesive type environment-friendly protective film is characterized by having a three-layer structure, wherein the outer layer is a self-adhesive material layer formed by combining a low-density polyethylene elastomer and an ultra-low-density elastomer, the middle layer is LDPE, the inner layer is LLDPE, and the self-adhesive material layer is prepared by mixing a plastomer with the trademark of 1140G and an elastomer of 8200G, which are produced by the Dow chemical company, wherein the ratio of the plastomer to the elastomer is 100: 20.
2. The light-transmitting self-adhesive environmental protection film according to claim 1, wherein the thickness ratio of the outer layer, the middle layer and the inner layer is 10%: 45%: 45 percent.
3. A production method of a light, transparent and self-adhesive environment-friendly protective film is characterized in that an outer layer material, a middle layer material and an inner layer material are melted and extruded by a co-extrusion film blowing machine, and are formed by internal cooling, traction and winding, wherein an extruder adopted by the middle layer adopts five-section heating, and the temperature is controlled to be 150 ℃, 155 ℃, 160 ℃, 165 ℃ and 165 ℃ respectively; the die head of the inner layer is heated in four sections, the temperature is respectively controlled at 165 ℃, 165 ℃ and 160 ℃, and the blow-up ratio is controlled between 10 and 18.
4. The method for producing a light transparent self-adhesive environmental protection film according to claim 3, wherein the inner layer is heated by an extruder in five stages, and the temperature of the five stages is controlled to be 135 ℃, 140 ℃, 145 ℃.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116118171A (en) * | 2023-02-23 | 2023-05-16 | 潍坊胜达科技股份有限公司 | Preparation method of self-adhesive protective film for real stone paint heat-insulating and decorating integrated plate |
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