CN104789142B - A kind of special polyethylene protective film of glass - Google Patents
A kind of special polyethylene protective film of glass Download PDFInfo
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- CN104789142B CN104789142B CN201510131431.6A CN201510131431A CN104789142B CN 104789142 B CN104789142 B CN 104789142B CN 201510131431 A CN201510131431 A CN 201510131431A CN 104789142 B CN104789142 B CN 104789142B
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Abstract
The present invention provides a kind of special polyethylene protective film of glass, and it is made up of following component proportioning：75~90 parts of low density polyethylene (LDPE), 1~15 part of metallocene polypropylene, 3~15 parts of metallocene PE, 0.1~0.3 part of antioxidant, 0.2~0.6 part of antifoggant.The thickness of the diaphragm is 25~120um, and the diaphragm includes solution volume layer, intermediate layer and self-adhesive layer, by three-layer co-extruded casting apparatus, fit together through screw rod melting extrusion, is cooled and shaped, prepares the polyethylene protective film successively.The present invention provides adhesiving effect by the use of the polyethylene of the metallocene catalysis adhesion strength of its own as self-adhesive layer; the problems such as solving the white haze occurred in protective glass surface process, cull; and cleanliness factor, intensity and the tear resistance of diaphragm are all improved significantly; the weatherability of film is greatly improved, hence it is evident that improve the service life of polyethylene protective film.
Description
Technical field
The present invention relates to diaphragm field, more particularly to a kind of special PE diaphragms of three-layer co-extruded glass.
Background technology
Diaphragm is a kind of film material to other materials with defencive function, is also a kind of pressure sensitive adhesive product, is used to
Protect product not polluted during production and processing, assembling, transport storage and use by dust, acid rain, ultraviolet and micro- life
Burn into machinery scuffing of thing etc., it is ensured that the original grade of product and optimum state.
In the diaphragm for glass, coating glue film is most widely used at present, and it is by polyethylene, polypropylene, polychlorostyrene second
The one or more of of alkene, ethene-vinyl acetate acid ester copolymer etc. be blended obtaining basement membrane, then be coated with basement membrane one layer or
Multilayer has the tack coat of attachment function, then prepares after drying again.Conventional sticker has solvent-borne type adhesion rubber
Agent, solvent-type acrylic sticker, water soluble acrylic acid sticker and silicone sticker, but these binding materials be respectively provided with it is relatively low
Glass transition temperature and relatively low molecular weight, when diaphragm is peeled off from glass, binding material is easily shifted and remained in
Peel off surface.In addition, containing substantial amounts of moisture in air, the especially moisture in hot humid season, air can be in certain bar
Enter the surface for bonding in glue or being attached to film under part, so as to cause the appearance of white haze phenomenon.Again, coating glue film is in production
During can use organic solvent, there is pollution environment and the problem of be detrimental to health.
Therefore, a kind of technique how is developed simple, it is with low cost, and can effectively solve the process on protective glass surface
The problems such as white haze of middle appearance, cull phenomenon, where being the presently relevant field personnel direction urgently to be resolved hurrily overcome.
The content of the invention
As the result of various extensive and careful research and experiment, it has been found by the inventor that poly- in glass
In ethene privacy protection film, make by using properly mixed low density polyethylene (LDPE), metallocene polypropylene and metallocene PE
Based on raw material, and on this basis addition with body series compatibility good antioxidant and antifoggant, then by three layers altogether
Squeeze casting technique and carry out final molding, it is ensured that while glass adhesion effect, can efficiently solve white present in current product
Mist, cull problem.Found based on this, complete the present invention.
It is an object of the invention to solve at least the above and defect, and provide the advantage that at least will be described later.
It is a still further object of the present invention to provide a kind of special polyethylene protective film of glass, it can utilize the adhesion of itself
Masterpiece provides adhesiving effect for self-adhesive layer, the problems such as solving the white haze, the cull that occur in protective glass surface process.
In order to realize according to object of the present invention and other advantages there is provided a kind of special polyethylene protective film of glass,
By weight, it is made up of following component proportioning：
75~90 parts of low density polyethylene (LDPE)；
1~15 part of metallocene polypropylene；
3~15 parts of metallocene PE；
0.1~0.3 part of antioxidant；
0.2~0.6 part of antifoggant.
Preferably, wherein, the gross thickness of the diaphragm is 25~120um, and diaphragm needs certain thickness to ensure
Its excellent anti-crushing impact ability, puncture resistant ability, anti-scratch ability and anti-chemical corrosive power etc., but with the increasing of thickness
Plus its transparency can be affected again, thus diaphragm between mechanical performance and transparency the need for seek one balance.Through
It is demonstrated experimentally that when the protection film thickness is less than 25um, its mechanical performance is substantially reduced, when the protection film thickness is located at
When between 25um~120um, it is 96.5%~98.6% in visible-range iuuminting rate, but when protection film thickness is more than
During 120um, its light transmittance is decreased obviously, and when the protection film thickness is 130nm, its light transmittance only has 91.4%.
Preferably, wherein, the diaphragm includes solution volume layer, intermediate layer and self-adhesive layer successively, and the solution volume layer is by weight
Amount part meter includes 0.1~0.3 part of 15~20 parts of low density polyethylene (LDPE), 0.6~5 part of metallocene polypropylene and antioxidant；
The intermediate layer by weight include 52~60 parts of low density polyethylene (LDPE), 0.5~10 part of metallocene polypropylene and
0.2~0.6 part of antifoggant；
The self-adhesive layer includes 8~10 parts of low density polyethylene (LDPE), 3~15 parts of metallocene PE by weight；
Each component in the solution volume layer, the intermediate layer and the self-adhesive layer is well mixed respectively, by three-layer co-extruded
Casting apparatus, fits together through screw rod melting extrusion, is cooled and shaped, prepares the polyethylene protective film.
Preferably, wherein, also added with accounting for the C that its mass fraction is respectively 0.05~0.2% in the self-adhesive layer5Stone
Oleoresin and 0.1~0.5% C9Petropols, on the basis of diaphragm translucency is not influenceed, can properly increase diaphragm
Sticky, water-fast and chemicals-resistant performance.
Preferably, wherein, the melt index of the low density polyethylene (LDPE) is 5~8g/10min, the metallocene poly- third
The melt index of alkene is 5~7g/10min, and the melt index of the metallocene PE is 4.5~6g/10min, melt index
Its mobility of of a relatively high raw material is preferable, molecular weight distribution relative narrower, to ensure to obtain homogeneous, stable diaphragm, when
When raw materials used averaged melt index is less than 3g/10min, its tensile strength reduces 12%.
Preferably, wherein, the 2-hydroxy-4-n-octoxybenzophenone of the antioxidant including 70wt% and
30wt% diphenyl iso-octyl phosphite ester, using cooperatively for two kinds of antioxidants, can make the use year of polyethylene protective film
Limit improves 20%, and 2-hydroxy-4-n-octoxybenzophenone and diphenyl iso-octyl phosphite ester and polyethylene film forming raw material
Compatibility it is good, both, which use cooperatively, significantly increases the transparency of polyethylene protective film, the polyethylene protective film prepared
Light transmittance in visible-range can improve 10~15%.
Preferably, wherein, the glycerine ester of the antifoggant including 90wt% and 10wt% polyvinyl alcohol so that production
Product in wet condition can non-sticky attached water vapour, the steam during rewinding do not adhere to self-adhesive layer so as to fit protection when
Wait the surface for causing steam to be not transfer to affixed object.Repeated verification experimental verification, the antifoggant and other auxiliary agent compatibilities are good, and
When being made up of 90wt% glycerine ester and 10wt% polyvinyl alcohol, anti-fog performance and persistence preferably, work as glycerine ester
Mass content when being reduced to 80%, just have slight white haze phenomenon and occur, when antifoggant only includes glycerine ester, it is most long
Antifog one times of decreased duration.
The present invention at least includes following beneficial effect：
(1) self-adhesive layer of the invention is well mixed laggard using the metallocene PE and low density polyethylene (LDPE) of proper ratio
Row co-extrusion, provides adhesiving effect, metallocene PE is easily separated out without amide-type using the adhesion strength of metallocene PE itself
Composition, repeatedly stripping is all improved significantly without cull, and cleanliness factor, intensity and the tear resistance of diaphragm；
(2) present invention with the addition of the metallocene polypropylene of proper ratio in intermediate layer, improve the transparency and light of product
Damp degree, the hardness and toughness of product are also all improved, and obtained diaphragm maintains certain base viscous force in order to from glass in itself
Torn on glass；
(3) present invention adds the high antioxidant of proper ratio compatibility and antifog according to using the performance of raw material in itself
Agent, it is therefore prevented that the appearance of glass surface white haze phenomenon, and the weatherability of film is greatly improved, hence it is evident that improve polyethylene guarantor
The service life of cuticula.
Further advantage, target and the feature of the present invention embodies part by following explanation, and part will also be by this
The research and practice of invention and understood by those skilled in the art.
Embodiment
With reference to example, the present invention is described in further detail, to make those skilled in the art with reference to specification text
Word can be implemented according to this.
It should be appreciated that " having " used herein, "comprising" and " comprising " term do not allot it is one or more its
The presence or addition of its element or its combination.
<Example 1>
A kind of special polyethylene protective film of glass, its thickness is 30um, and in parts by mass, it always matches composition and is：It is low close
Spend 80 parts of polyethylene, 9.3 parts of metallocene polypropylene, 10 parts of metallocene PE, 0.2 part of antioxidant, 0.5 part of antifoggant.
The diaphragm includes solution volume layer, intermediate layer and self-adhesive layer successively, wherein, the solution volume layer includes by weight
0.2 part of 15 parts of low density polyethylene (LDPE), 1 part of metallocene polypropylene and antioxidant；The intermediate layer includes low close by weight
Spend 0.5 part of 55 parts of polyethylene, 8.3 parts of metallocene polypropylene and antifoggant；The self-adhesive layer is poly- including low-density by weight
10 parts of ethene, 10 parts of metallocene PE.It is respectively 0.05% to be also added with wherein described self-adhesive layer and account for its mass fraction
C5Petropols and 0.3% C9Petropols.
Wherein, the melt index of the low density polyethylene (LDPE) is 5g/10min, the melt index of the metallocene polypropylene
For 5g/10min, the melt index of the metallocene PE is 4.5g/10min.The antioxidant includes 70wt% 2-
The diphenyl iso-octyl phosphite ester of hydroxyl -4- oxy-octyl benzophenones and 30wt%, the antifoggant includes 90wt%'s
The polyvinyl alcohol of glycerine ester and 10wt%.
Each component in the solution volume layer, the intermediate layer and the self-adhesive layer is well mixed respectively, by three-layer co-extruded
Casting apparatus, fits together through screw rod melting extrusion, is cooled and shaped, prepares the polyethylene protective film.Prepare
The polyethylene protective film without white haze phenomenon, glossiness and cleanliness factor are good, thus light transmittance is high, and its various performance parameters is shown in Table 1.
<Example 2>
A kind of special polyethylene protective film of glass, its thickness is 120um, and in parts by mass, it always matches composition and is：It is low close
Spend 82.7 parts of polyethylene, 14 parts of metallocene polypropylene, 3 parts of metallocene PE, 0.1 part of antioxidant, 0.2 part of antifoggant.
The diaphragm includes solution volume layer, intermediate layer and self-adhesive layer successively, wherein, the solution volume layer includes by weight
0.1 part of 20 parts of low density polyethylene (LDPE), 4 parts of metallocene polypropylene and antioxidant；The intermediate layer includes low close by weight
Spend 0.2 part of 54.7 parts of polyethylene, 10 parts of metallocene polypropylene and antifoggant；The self-adhesive layer is poly- including low-density by weight
8 parts of ethene, 3 parts of metallocene PE.Also it is added with wherein described self-adhesive layer and accounts for the C that its mass fraction is respectively 0.2%5Stone
Oleoresin and 0.1% C9Petropols.
Wherein, the melt index of the low density polyethylene (LDPE) is 8g/10min, the melt index of the metallocene polypropylene
For 7g/10min, the melt index of the metallocene PE is 6g/10min.The antioxidant includes 70wt% 2- hydroxyls
The diphenyl iso-octyl phosphite ester of base -4- oxy-octyl benzophenones and 30wt%, the antifoggant includes the third of 90wt%
The polyvinyl alcohol of three alcohol esters and 10wt%.
Each component in the solution volume layer, the intermediate layer and the self-adhesive layer is well mixed respectively, by three-layer co-extruded
Casting apparatus, fits together through screw rod melting extrusion, is cooled and shaped, and the polyethylene protective film prepared is existing without white haze
As glossiness and cleanliness factor are good, thus light transmittance is high, and its various performance parameters is shown in Table 1.
<Example 3>
A kind of special polyethylene protective film of glass, its thickness is 80um, and in parts by mass, it always matches composition and is：It is low close
Spend 88 parts of polyethylene, 2.9 parts of metallocene polypropylene, 8.5 parts of metallocene PE, 0.2 part of antioxidant, 0.4 part of antifoggant.
The diaphragm includes solution volume layer, intermediate layer and self-adhesive layer successively, wherein, the solution volume layer includes by weight
0.2 part of 19 parts of low density polyethylene (LDPE), 0.9 part of metallocene polypropylene and antioxidant；The intermediate layer includes low by weight
0.4 part of 60 parts of density polyethylene, 2 parts of metallocene polypropylene and antifoggant；The self-adhesive layer is poly- including low-density by weight
9 parts of ethene, 8.5 parts of metallocene PE.It is respectively 0.15% to be also added with wherein described self-adhesive layer and account for its mass fraction
C5Petropols and 0.45% C9Petropols.
Wherein, the melt index of the low density polyethylene (LDPE) is 7g/10min, the melt index of the metallocene polypropylene
For 6g/10min, the melt index of the metallocene PE is 5g/10min.The antioxidant includes 70wt% 2- hydroxyls
The diphenyl iso-octyl phosphite ester of base -4- oxy-octyl benzophenones and 30wt%, the antifoggant includes the third of 90wt%
The polyvinyl alcohol of three alcohol esters and 10wt%.
Each component in the solution volume layer, the intermediate layer and the self-adhesive layer is well mixed respectively, by three-layer co-extruded
Casting apparatus, fits together through screw rod melting extrusion, is cooled and shaped, and the polyethylene protective film prepared is existing without white haze
As glossiness and cleanliness factor are good, thus light transmittance is high, and its various performance parameters is shown in Table 1.
<Example 4>
A kind of special polyethylene protective film of glass, its thickness is 100um, and in parts by mass, it always matches composition and is：It is low close
Spend 77 parts of polyethylene, 9.6 parts of metallocene polypropylene, 12.5 parts of metallocene PE, 0.3 part of antioxidant, 0.6 part of antifoggant.
The diaphragm includes solution volume layer, intermediate layer and self-adhesive layer successively, wherein, the solution volume layer includes by weight
0.3 part of 16 parts of low density polyethylene (LDPE), 0.6 part of metallocene polypropylene and antioxidant；The intermediate layer includes low by weight
0.6 part of 52 parts of density polyethylene, 9 parts of metallocene polypropylene and antifoggant；The self-adhesive layer is poly- including low-density by weight
9 parts of ethene, 12.5 parts of metallocene PE.It is respectively 0.05% to be also added with wherein described self-adhesive layer and account for its mass fraction
C5Petropols and 0.3% C9Petropols.
Wherein, the melt index of the low density polyethylene (LDPE) is 6g/10min, the melt index of the metallocene polypropylene
For 7g/10min, the melt index of the metallocene PE is 5g/10min.The antioxidant includes 70wt% 2- hydroxyls
The diphenyl iso-octyl phosphite ester of base -4- oxy-octyl benzophenones and 30wt%, the antifoggant includes the third of 90wt%
The polyvinyl alcohol of three alcohol esters and 10wt%.
Each component in the solution volume layer, the intermediate layer and the self-adhesive layer is well mixed respectively, by three-layer co-extruded
Casting apparatus, fits together through screw rod melting extrusion, is cooled and shaped, and the polyethylene protective film prepared is existing without white haze
As glossiness and cleanliness factor are good, thus light transmittance is high, and its various performance parameters is shown in Table 1.
In order to illustrate the effect of the present invention, it is as follows that inventor provides comparative experiments：
<Comparative example 1>
When example 2 prepares the special polyethylene protective film of the glass, without metallocene PE, cyclopentadienyl gold in example 2
The quality addition of category polyethylene all replaces with the low density polyethylene (LDPE) of same quality addition, and remaining parameter is with being example 2
In it is identical, technical process is also identical.The various performance parameters of the polyethylene protective film prepared are shown in Table 1.
<Comparative example 2>
When example 3 prepares the special polyethylene protective film of the glass, without metallocene polypropylene, cyclopentadienyl gold in example 3
The quality addition of category polyethylene all replaces with the low density polyethylene (LDPE) of same quality addition, and remaining parameter is with being example 3
In it is identical, technical process is also identical.The various performance parameters of the polyethylene protective film prepared are shown in Table 1.
<Comparative example 3>
When example 3 prepares the special polyethylene protective film of the glass, without C in self-adhesive layer5Petropols and C9Oil
Resin, its quality addition all replaces with the low density polyethylene (LDPE) of same quality addition, remaining parameter and is example 3
Identical, technical process is also identical.The various performance parameters of the polyethylene protective film prepared are shown in Table 1.
Determine the stretching of diaphragm according to GB/T 1040-1992 respectively for the product that examples detailed above and comparative example are obtained
Intensity, impact strength is determined according to GB/T 1843-2008, and the light transmittance of diaphragm is determined according to GB/T 2410-2008, according to
GB/T 2792-1998 determine 180 ° of peel strengths of diaphragm, according to visually judging whether diaphragm has residual after tearing.
The polyethylene protective film various performance parameters of table 1
From table 1, it can be seen that because the cyclopentadienyl that proper ratio is with the addition of in polyethylene protective film preparation process is golden in example
Belong to polyethylene and metallocene polypropylene, adhesiving effect, nothing during use are provided using the bonding force of metallocene PE itself
Cull and white haze phenomenon, and the mechanical performance of diaphragm is also significantly improved；
Comparative example 1 is compared with example 2, without addition metallocene PE in comparative example 1, and the light transmittance of film is relatively low, film
Adhesiving effect is poor, and mechanical strength is significantly reduced；
Comparative example 2 is compared with example 3, and without addition metallocene polypropylene in comparative example 2, the glossiness and light transmittance of film have
Reduced, the mechanical strength of film is significantly reduced；
Comparative example 3 is compared with example 3, and the cohesive of itself and glass has declined, peel strength reduction, this explanation C5And C9
The addition of Petropols can adjust the adhesion strength of diaphragm and glass, but C5And C9The ratio of the addition of Petropols can not mistake
Height, otherwise can influence the cleanliness factor and light transmittance of diaphragm, work as C5And C9The addition of Petropols accounts for the mass fraction of self-adhesive layer
When respectively 0.3% and 0.7%, the light transmittance of the diaphragm prepared reduces 5%.
Although embodiment of the present invention is disclosed as above, it is not limited in specification and embodiment listed fortune
With it can be applied to various suitable the field of the invention completely, for those skilled in the art, can be easily real
Now other modification, therefore under the universal limited without departing substantially from claim and equivalency range, the present invention is not limited to
Specific details and shown here as the example with description.
Claims (4)
1. a kind of special polyethylene protective film of glass, it is characterised in that by weight, is made up of following component proportioning：
75~90 parts of low density polyethylene (LDPE)；
1~15 part of metallocene polypropylene；
3~15 parts of metallocene PE；
0.1~0.3 part of antioxidant；
0.2~0.6 part of antifoggant；
The diaphragm includes solution volume layer, intermediate layer and self-adhesive layer successively, and the self-adhesive layer is poly- including low-density by weight
8~10 parts of ethene, 3~15 parts of metallocene PE；
Wherein, also it is added with the self-adhesive layer and accounts for the C that its mass fraction is respectively 0.05~0.2%5Petropols and 0.1~
0.5% C9Petropols；
The antioxidant includes 70wt% 2-hydroxy-4-n-octoxybenzophenone and 30wt% diphenyl iso-octyl Asia
Phosphate；
The antifoggant includes 90wt% glycerine ester and 10wt% polyvinyl alcohol.
2. the special polyethylene protective film of glass as claimed in claim 1, it is characterised in that the thickness of the diaphragm is 25~
120 μ m 。
3. the special polyethylene protective film of glass as claimed in claim 1, it is characterised in that the solution volume layer is wrapped by weight
Include 0.1~0.3 part of 15~20 parts of low density polyethylene (LDPE), 0.6~5 part of metallocene polypropylene and antioxidant；
The intermediate layer includes 52~60 parts of low density polyethylene (LDPE), 0.5~10 part of metallocene polypropylene and antifog by weight
0.2~0.6 part of agent；
Each component in the solution volume layer, the intermediate layer and the self-adhesive layer is well mixed respectively, passes through three-layer co-extruded curtain coating
Equipment, fits together through screw rod melting extrusion, is cooled and shaped, prepares the polyethylene protective film.
4. the special polyethylene protective film of glass as claimed in claim 1, it is characterised in that the melting of the low density polyethylene (LDPE)
Index is 5~8g/10min, and the melt index of the metallocene polypropylene is 5~7g/10min, the metallocene PE
Melt index is 4.5~6g/10min.
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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 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102112305A (en) * | 2008-08-05 | 2011-06-29 | Dic株式会社 | Surface protection film |
| CN104354414A (en) * | 2014-11-15 | 2015-02-18 | 佛山新长盛塑料薄膜有限公司 | High-temperature-resistant clean type self-adhesive protection film and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102112305A (en) * | 2008-08-05 | 2011-06-29 | Dic株式会社 | Surface protection film |
| CN104354414A (en) * | 2014-11-15 | 2015-02-18 | 佛山新长盛塑料薄膜有限公司 | High-temperature-resistant clean type self-adhesive protection film and preparation method thereof |
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