CN104789142A - Special polyethylene protection membrane for glass - Google Patents
Special polyethylene protection membrane for glass Download PDFInfo
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- CN104789142A CN104789142A CN201510131431.6A CN201510131431A CN104789142A CN 104789142 A CN104789142 A CN 104789142A CN 201510131431 A CN201510131431 A CN 201510131431A CN 104789142 A CN104789142 A CN 104789142A
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Abstract
The invention provides a special polyethylene protection membrane for glass. The special polyethylene protection membrane consists of the following components in parts: 75-90 parts of low-density polyethylene, 1-15 parts of metallocene polypropylene, 3-15 parts of metallocene polyethylene, 0.1-0.3 part of antioxidant, and 0.2-0.6 part of an anti-fogging agent. The thickness of the protection membrane is 25-120 [mu]m; the protection membrane comprises an uncoiling layer, a middle layer and a self-adhering layer in sequence; the three layers are adhered together through screw rod fusion extrusion by using three-layer co-extrusion casting equipment, and are cooled and molded, thereby obtaining the polyethylene protection membrane. Due to the adhesion property of metallocene catalyzed polyethylene self, an adhesion effect is achieved for the self-adhering layer, the problems that fog, residual adhesives and the like are caused in the process that the glass surface is protected are solved, the cleanness, the strength and the anti-tearing property of the protection membrane are all remarkably improved, the weather resistance of the protection membrane is also greatly improved, and the service life of the polyethylene protection membrane is remarkably prolonged.
Description
Technical field
The present invention relates to protective membrane field, particularly the special PE protective membrane of the three-layer co-extruded glass of one.
Background technology
Protective membrane is a kind of film material other materials to defencive function; also be a kind of pressure sensitive adhesive goods; in order to protect product not scratch by the burn into machinery of the pollution of dust, acid rain, ultraviolet and microorganism in process for processing, assembling, transport storage and use procedure, ensure the original grade of product and optimum state.
For in the protective membrane of glass; coating glue film is most widely used at present; it carries out the blended basement membrane that obtains by one or more of polyethylene, polypropylene, polyvinyl chloride, ethene-vinyl acetate acid ester copolymer etc.; on basement membrane, be coated with the tack coat that one or more layers has attachment function again, and then prepare after drying.Conventional tackiness agent has the agent of solvent-borne type adhesion rubber, solvent-type acrylic tackiness agent, water soluble acrylic acid tackiness agent and silicone tackiness agent; but these matrix materials all have lower second-order transition temperature and lower molecular weight; when being peeled off from glass by protective membrane, matrix material easily shifts and remains in stripper surface.In addition, containing a large amount of moisture in air, especially in hot humid season, the moisture in air can enter in bonding glue under certain condition or be attached to the surface of film, thus causes the appearance of white mist phenomenon.Again, coating glue film can use organic solvent, the problem that there is contaminate environment He be detrimental to health in the process of producing.
Therefore, how to develop a kind of technique simple, with low cost, and effectively can solve the problem such as white mist, cull phenomenon occurred in the process on protective glass surface, be the current pertinent art place, direction overcome urgently to be resolved hurrily.
Summary of the invention
As the result of various extensive and careful research and experiment; the present inventor has been found that; in glass polyethylene privacy protection film; by adopting raw material based on properly mixed Low Density Polyethylene, metallocene polypropylene and metallocene PE; and add the antioxidant good with body series consistency and antifogging agent on this basis; then final molding is carried out by three-layer co-extruded casting technique; while ensureing glass adhesion effect, the white mist, the cull problem that exist can be efficiently solved in current product.Based on this discovery, complete the present invention.
An object of the present invention is to solve at least the problems referred to above and defect, and the advantage will illustrated at least is below provided.
A further object of the invention is to provide the special polyethylene protective film of a kind of glass, and it can utilize the clinging power of self to provide adhesiving effect as self-adhesive layer, solves the problem such as white mist, cull occurred in protective glass surface process.
In order to realize according to these objects of the present invention and other advantages, provide a kind of glass special polyethylene protective film, by weight, it is made up of following component proportioning:
Low Density Polyethylene 75 ~ 90 parts;
Metallocene polypropylene 1 ~ 15 part;
Metallocene PE 3 ~ 15 parts;
Antioxidant 0.1 ~ 0.3 part;
Antifogging agent 0.2 ~ 0.6 part.
Preferably; wherein; the total thickness of described protective membrane is 25 ~ 120um; protective membrane needs certain thickness to ensure anti-crushing impact ability of its excellence, puncture resistant ability, anti-scratch ability and anti-chemical corrosive power etc.; but along with its transparency of increase of thickness can be affected again, thus protective membrane needing between mechanical property and transparency seek a balance.The experiment proved that; when described protective membrane thickness is lower than 25um; its mechanical property obviously reduces; when described protective membrane thickness is between 25um ~ 120um; it is 96.5% ~ 98.6% in visible-range iuuminting rate, but when protective membrane thickness is greater than 120um, its transmittance obviously declines; when described protective membrane thickness is 130nm, its transmittance only has 91.4%.
Preferably, wherein, described protective membrane comprises successively separates volume layer, middle layer and self-adhesive layer, and described solution volume layer comprises Low Density Polyethylene 15 ~ 20 parts, metallocene polypropylene 0.6 ~ 5 part and antioxidant 0.1 ~ 0.3 part by weight;
Described middle layer comprises Low Density Polyethylene 52 ~ 60 parts, metallocene polypropylene 0.5 ~ 10 part and antifogging agent 0.2 ~ 0.6 part by weight;
Described self-adhesive layer comprises Low Density Polyethylene 8 ~ 10 parts, metallocene PE 3 ~ 15 parts by weight;
Respectively each component in described solution volume layer, described middle layer and described self-adhesive layer is mixed, by three-layer co-extruded casting apparatus, melt extrude through screw rod and fit together, cooling forming, prepare described polyethylene protective film.
Preferably, wherein, be also added with in described self-adhesive layer and account for the C that its massfraction is respectively 0.05 ~ 0.2%
5petroleum resin and 0.1 ~ 0.5% C
9petroleum resin, on the basis not affecting protective membrane light transmission, suitably can improve the performance of the viscosity of protective membrane, water-fast and chemicals-resistant.
Preferably; wherein; the melting index of described Low Density Polyethylene is 5 ~ 8g/10min; the melting index of described metallocene polypropylene is 5 ~ 7g/10min, and the melting index of described metallocene PE is 4.5 ~ 6g/10min, and its mobility of raw material that melting index is relatively high is better; molecular weight distribution relative narrower; to ensure to obtain homogeneous, stable protective membrane, when raw materials used averaged melt index is lower than 3g/10min, its tensile strength reduces 12%.
Preferably; wherein; described antioxidant comprises the Octabenzone of 70wt% and the phenylbenzene iso-octyl phosphorous acid ester of 30wt%; two kinds of antioxidants with the use of; can make improve 20% the working life of polyethylene protective film; and the consistency of Octabenzone and phenylbenzene iso-octyl phosphorous acid ester and polyethylene film forming raw material is good; both are with the use of the transparency significantly increasing polyethylene protective film, and the transmittance of the polyethylene protective film prepared in visible-range can improve 10 ~ 15%.
Preferably; wherein; described antifogging agent comprises the glycerine ester of 90wt% and the polyvinyl alcohol of 10wt%, makes product can not attach steam in wet condition, and the steam in rewinding process does not attach self-adhesive layer thus makes steam not transfer to the surface of affixed object when laminating protection.Verify through revision test, described antifogging agent and other auxiliary agent consistencies good, and when being made up of the glycerine ester of 90wt% and the polyvinyl alcohol of 10wt%, anti-fog performance and persistence best, when the mass content of glycerine ester is reduced to 80%, just have slight white mist phenomenon to occur, when antifogging agent only comprises glycerine ester, its longest antifog decreased duration one times.
The present invention at least comprises following beneficial effect:
(1) self-adhesive layer of the present invention carries out co-extrusion after adopting the metallocene PE of proper ratio and Low Density Polyethylene to mix, the clinging power of metallocene PE self is utilized to provide adhesiving effect, metallocene PE not amide containing class easily separates out composition, repeatedly peel off without cull, and the cleanliness factor of protective membrane, intensity and tear resistance are all improved significantly;
(2) the present invention with the addition of the metallocene polypropylene of proper ratio in middle layer, improve transparency and the glossiness of product, hardness and the toughness of product are also all improved, and the protective membrane obtained itself maintains certain base viscous force so that tear from glass;
(3) the present invention adds the high antioxidant of proper ratio consistency and antifogging agent according to using the performance of raw material itself; prevent the appearance of the white mist phenomenon of glass surface; and the weathering resistance of film is greatly improved, significantly improve the working life of polyethylene protective film.
Part is embodied by explanation below by other advantage of the present invention, target and feature, part also will by research and practice of the present invention by those skilled in the art is understood.
Embodiment
Below in conjunction with example, the present invention is described in further detail, can implement according to this with reference to specification sheets word to make those skilled in the art.
Should be appreciated that " having " used herein, other element one or more do not allotted in " comprising " and " comprising " term or its combination existence or interpolation.
< example 1>
The special polyethylene protective film of a kind of glass, its thickness is 30um, and by mass parts, its total proportioning consists of: Low Density Polyethylene 80 parts, metallocene polypropylene 9.3 parts, metallocene PE 10 parts, antioxidant 0.2 part, antifogging agent 0.5 part.
Described protective membrane comprises successively separates volume layer, middle layer and self-adhesive layer, and wherein, described solution volume layer comprises Low Density Polyethylene 15 parts, metallocene polypropylene 1 part and antioxidant 0.2 part by weight; Described middle layer comprises Low Density Polyethylene 55 parts, metallocene polypropylene 8.3 parts and antifogging agent 0.5 part by weight; Described self-adhesive layer comprises Low Density Polyethylene 10 parts, metallocene PE 10 parts by weight.Also be added with in wherein said self-adhesive layer and account for the C that its massfraction is respectively 0.05%
5petroleum resin and 0.3% C
9petroleum resin.
Wherein, the melting index of described Low Density Polyethylene is 5g/10min, and the melting index of described metallocene polypropylene is 5g/10min, and the melting index of described metallocene PE is 4.5g/10min.Described antioxidant comprises the Octabenzone of 70wt% and the phenylbenzene iso-octyl phosphorous acid ester of 30wt%, and described antifogging agent comprises the glycerine ester of 90wt% and the polyvinyl alcohol of 10wt%.
Respectively each component in described solution volume layer, described middle layer and described self-adhesive layer is mixed, by three-layer co-extruded casting apparatus, melt extrude through screw rod and fit together, cooling forming, prepare described polyethylene protective film.This polyethylene protective film prepared without white mist phenomenon, glossiness and cleanliness factor good, thus transmittance is high, and its various performance parameters is in table 1.
< example 2>
The special polyethylene protective film of a kind of glass, its thickness is 120um, and by mass parts, its total proportioning consists of: Low Density Polyethylene 82.7 parts, metallocene polypropylene 14 parts, metallocene PE 3 parts, antioxidant 0.1 part, antifogging agent 0.2 part.
Described protective membrane comprises successively separates volume layer, middle layer and self-adhesive layer, and wherein, described solution volume layer comprises Low Density Polyethylene 20 parts, metallocene polypropylene 4 parts and antioxidant 0.1 part by weight; Described middle layer comprises Low Density Polyethylene 54.7 parts, metallocene polypropylene 10 parts and antifogging agent 0.2 part by weight; Described self-adhesive layer comprises Low Density Polyethylene 8 parts, metallocene PE 3 parts by weight.Also be added with in wherein said self-adhesive layer and account for the C that its massfraction is respectively 0.2%
5petroleum resin and 0.1% C
9petroleum resin.
Wherein, the melting index of described Low Density Polyethylene is 8g/10min, and the melting index of described metallocene polypropylene is 7g/10min, and the melting index of described metallocene PE is 6g/10min.Described antioxidant comprises the Octabenzone of 70wt% and the phenylbenzene iso-octyl phosphorous acid ester of 30wt%, and described antifogging agent comprises the glycerine ester of 90wt% and the polyvinyl alcohol of 10wt%.
Respectively each component in described solution volume layer, described middle layer and described self-adhesive layer is mixed; by three-layer co-extruded casting apparatus; melt extrude through screw rod and fit together; cooling forming; this polyethylene protective film prepared is without white mist phenomenon; glossiness and cleanliness factor good, thus transmittance is high, and its various performance parameters is in table 1.
< example 3>
The special polyethylene protective film of a kind of glass, its thickness is 80um, and by mass parts, its total proportioning consists of: Low Density Polyethylene 88 parts, metallocene polypropylene 2.9 parts, metallocene PE 8.5 parts, antioxidant 0.2 part, antifogging agent 0.4 part.
Described protective membrane comprises successively separates volume layer, middle layer and self-adhesive layer, and wherein, described solution volume layer comprises Low Density Polyethylene 19 parts, metallocene polypropylene 0.9 part and antioxidant 0.2 part by weight; Described middle layer comprises Low Density Polyethylene 60 parts, metallocene polypropylene 2 parts and antifogging agent 0.4 part by weight; Described self-adhesive layer comprises Low Density Polyethylene 9 parts, metallocene PE 8.5 parts by weight.Also be added with in wherein said self-adhesive layer and account for the C that its massfraction is respectively 0.15%
5petroleum resin and 0.45% C
9petroleum resin.
Wherein, the melting index of described Low Density Polyethylene is 7g/10min, and the melting index of described metallocene polypropylene is 6g/10min, and the melting index of described metallocene PE is 5g/10min.Described antioxidant comprises the Octabenzone of 70wt% and the phenylbenzene iso-octyl phosphorous acid ester of 30wt%, and described antifogging agent comprises the glycerine ester of 90wt% and the polyvinyl alcohol of 10wt%.
Respectively each component in described solution volume layer, described middle layer and described self-adhesive layer is mixed; by three-layer co-extruded casting apparatus; melt extrude through screw rod and fit together; cooling forming; this polyethylene protective film prepared is without white mist phenomenon; glossiness and cleanliness factor good, thus transmittance is high, and its various performance parameters is in table 1.
< example 4>
The special polyethylene protective film of a kind of glass, its thickness is 100um, and by mass parts, its total proportioning consists of: Low Density Polyethylene 77 parts, metallocene polypropylene 9.6 parts, metallocene PE 12.5 parts, antioxidant 0.3 part, antifogging agent 0.6 part.
Described protective membrane comprises successively separates volume layer, middle layer and self-adhesive layer, and wherein, described solution volume layer comprises Low Density Polyethylene 16 parts, metallocene polypropylene 0.6 part and antioxidant 0.3 part by weight; Described middle layer comprises Low Density Polyethylene 52 parts, metallocene polypropylene 9 parts and antifogging agent 0.6 part by weight; Described self-adhesive layer comprises Low Density Polyethylene 9 parts, metallocene PE 12.5 parts by weight.Also be added with in wherein said self-adhesive layer and account for the C that its massfraction is respectively 0.05%
5petroleum resin and 0.3% C
9petroleum resin.
Wherein, the melting index of described Low Density Polyethylene is 6g/10min, and the melting index of described metallocene polypropylene is 7g/10min, and the melting index of described metallocene PE is 5g/10min.Described antioxidant comprises the Octabenzone of 70wt% and the phenylbenzene iso-octyl phosphorous acid ester of 30wt%, and described antifogging agent comprises the glycerine ester of 90wt% and the polyvinyl alcohol of 10wt%.
Respectively each component in described solution volume layer, described middle layer and described self-adhesive layer is mixed; by three-layer co-extruded casting apparatus; melt extrude through screw rod and fit together; cooling forming; this polyethylene protective film prepared is without white mist phenomenon; glossiness and cleanliness factor good, thus transmittance is high, and its various performance parameters is in table 1.
In order to effect of the present invention is described, contriver provides comparative experiments as follows:
< comparative example 1>
When example 2 prepares the special polyethylene protective film of described glass; do not add metallocene PE; in example 2, the quality addition of metallocene PE all replaces with the Low Density Polyethylene of same quality addition, all the other parameters be identical in example 2, technological process is also identical.The various performance parameters of this polyethylene protective film prepared is in table 1.
< comparative example 2>
When example 3 prepares the special polyethylene protective film of described glass; do not add metallocene polypropylene; in example 3, the quality addition of metallocene PE all replaces with the Low Density Polyethylene of same quality addition, all the other parameters be identical in example 3, technological process is also identical.The various performance parameters of this polyethylene protective film prepared is in table 1.
< comparative example 3>
When example 3 prepares the special polyethylene protective film of described glass, in self-adhesive layer, do not add C
5petroleum resin and C
9petroleum resin, its quality addition all replaces with the Low Density Polyethylene of same quality addition, all the other parameters be identical in example 3, technological process is also identical.The various performance parameters of this polyethylene protective film prepared is in table 1.
The product obtained for above-mentioned example and comparative example measures the tensile strength of protective membrane respectively according to GB/T 1040-1992; shock strength is measured according to GB/T 1843-2008; the transmittance of protective membrane is measured according to GB/T 2410-2008; measure 180 ° of stripping strengths of protective membrane according to GB/T 2792-1998, according to visual judge whether to have after protective membrane tears residual.
Table 1 polyethylene protective film various performance parameters
Can find out from table 1, owing to the addition of metallocene PE and the metallocene polypropylene of proper ratio in polyethylene protective film preparation process in example, the bounding force of metallocene PE self is utilized to provide adhesiving effect, without cull and white mist phenomenon in use procedure, and the mechanical property of protective membrane have also been obtained obvious raising;
Comparative example 1 is compared with example 2, does not add metallocene PE in comparative example 1, and the transmittance of film is on the low side, and the adhesiving effect of film is poor, and physical strength also obviously reduces;
Comparative example 2 is compared with example 3, does not add metallocene polypropylene in comparative example 2, and glossiness and the transmittance of film decrease, and the physical strength of film also obviously reduces;
Comparative example 3 is compared with example 3, and the binding property of itself and glass declines to some extent, and stripping strength reduces, and this illustrates C
5and C
9petroleum resin add the clinging power that can regulate protective membrane and glass, but C
5and C
9the ratio of the interpolation of petroleum resin can not be too high, otherwise can affect cleanliness factor and the transmittance of protective membrane, works as C
5and C
9when the massfraction that the add-on of petroleum resin accounts for self-adhesive layer is respectively 0.3% and 0.7%, the transmittance of the protective membrane prepared reduces 5%.
Although embodiment of the present invention are open as above, but it is not limited in listed in specification sheets and embodiment utilization, it can be applied to various applicable the field of the invention completely, for those skilled in the art, can easily realize other amendment, therefore do not deviating under the universal that claim and equivalency range limit, the present invention is not limited to specific details and illustrates here and the example described.
Claims (7)
1. the special polyethylene protective film of glass, is characterized in that, by weight, is made up of following component proportioning:
Low Density Polyethylene 75 ~ 90 parts;
Metallocene polypropylene 1 ~ 15 part;
Metallocene PE 3 ~ 15 parts;
Antioxidant 0.1 ~ 0.3 part;
Antifogging agent 0.2 ~ 0.6 part.
2. the special polyethylene protective film of glass as claimed in claim 1, it is characterized in that, the thickness of described protective membrane is 25 ~ 120um.
3. the special polyethylene protective film of glass as claimed in claim 1, is characterized in that, described protective membrane comprises successively separates volume layer, middle layer and self-adhesive layer,
Described solution volume layer comprises Low Density Polyethylene 15 ~ 20 parts, metallocene polypropylene 0.6 ~ 5 part and antioxidant 0.1 ~ 0.3 part by weight;
Described middle layer comprises Low Density Polyethylene 52 ~ 60 parts, metallocene polypropylene 0.5 ~ 10 part and antifogging agent 0.2 ~ 0.6 part by weight;
Described self-adhesive layer comprises Low Density Polyethylene 8 ~ 10 parts, metallocene PE 3 ~ 15 parts by weight;
Respectively each component in described solution volume layer, described middle layer and described self-adhesive layer is mixed, by three-layer co-extruded casting apparatus, melt extrude through screw rod and fit together, cooling forming, prepare described polyethylene protective film.
4. the special polyethylene protective film of glass as claimed in claim 3, is characterized in that, be also added with and account for the C that its massfraction is respectively 0.05 ~ 0.2% in described self-adhesive layer
5petroleum resin and 0.1 ~ 0.5% C
9petroleum resin.
5. the special polyethylene protective film of glass as claimed in claim 1; it is characterized in that; the melting index of described Low Density Polyethylene is 5 ~ 8g/10min, and the melting index of described metallocene polypropylene is 5 ~ 7g/10min, and the melting index of described metallocene PE is 4.5 ~ 6g/10min.
6. the special polyethylene protective film of glass as claimed in claim 1, it is characterized in that, described antioxidant comprises the Octabenzone of 70wt% and the phenylbenzene iso-octyl phosphorous acid ester of 30wt%.
7. the special polyethylene protective film of glass as claimed in claim 1, it is characterized in that, described antifogging agent comprises the glycerine ester of 90wt% and the polyvinyl alcohol of 10wt%.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107193075A (en) * | 2017-05-23 | 2017-09-22 | 成都市惠家胶粘制品有限公司 | Environment friendly heat resistant type is used for the diaphragm of light guide plate |
| CN108517066A (en) * | 2018-04-16 | 2018-09-11 | 合肥协耀玻璃制品有限公司 | A kind of scratch resistant protective film on shield glass surface and preparation method thereof |
| CN109605886A (en) * | 2018-11-15 | 2019-04-12 | 永新股份（黄山）包装有限公司 | A kind of high-temperature resistant nano grade tack optical protection layer and its production method |
| CN111808348A (en) * | 2020-06-29 | 2020-10-23 | 深圳市象形科技有限公司 | Scratch-resistant PE optical protective film and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107193075A (en) * | 2017-05-23 | 2017-09-22 | 成都市惠家胶粘制品有限公司 | Environment friendly heat resistant type is used for the diaphragm of light guide plate |
| CN108517066A (en) * | 2018-04-16 | 2018-09-11 | 合肥协耀玻璃制品有限公司 | A kind of scratch resistant protective film on shield glass surface and preparation method thereof |
| CN109605886A (en) * | 2018-11-15 | 2019-04-12 | 永新股份（黄山）包装有限公司 | A kind of high-temperature resistant nano grade tack optical protection layer and its production method |
| CN111808348A (en) * | 2020-06-29 | 2020-10-23 | 深圳市象形科技有限公司 | Scratch-resistant PE optical protective film and preparation method thereof |
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