CN203282749U - Milky-white CPP (casting polypropylene) film - Google Patents
Milky-white CPP (casting polypropylene) film Download PDFInfo
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- CN203282749U CN203282749U CN2013201065733U CN201320106573U CN203282749U CN 203282749 U CN203282749 U CN 203282749U CN 2013201065733 U CN2013201065733 U CN 2013201065733U CN 201320106573 U CN201320106573 U CN 201320106573U CN 203282749 U CN203282749 U CN 203282749U
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Abstract
A milky-white CPP casting polypropylene film is formed by compositing a heat-seal layer, a sandwich layer and a corona treatment layer, wherein the sandwich layer is sandwiched between the heat-seal layer and the corona treatment layer. The milky-white CPP film is beautiful in appearance, good in light-proof effect, uniform in color, and good in opening performance and in printing or composite effect, and has no mutual adhesion. Moreover, a co-extrusion casting production process is adopted, the surface of the film is slightly rough, so that a certain amount of air is reserved between the film layers when the finished products of films are stacked or roller up together, the effective contact area between the films is also reduced, and the function of preventing film adhesion is achieved. Slipping agent is uniformly scattered on the plastic film through smelting extrusion and finally can be quickly moved to the surface of the film during the production and using process, so as to form a smooth layer, and as a result, the friction coefficient of the film surface is reduced, the films can not be in adhesion, and accordingly, the unreeling and slitting are more smooth, and the good opening performance is achieved.
Description
Technical field
The utility model relates to a kind of milky white film, relates in particular to a kind of milky white film of cast polypropylene of producing by multi-layer co-extruded casting technique.
Background technology
Common cast polypropylene film (being called for short the CPP film) is generally transparent when not adding the look mother, covering power is very low.CPP film for specific use, as film has certain opacity and outward appearance effect of visualization while requiring to pack, three kinds of modes are generally arranged, first kind of way is the coloured film of compound one deck on the CPP film, the second way is directly to print the printing ink of one deck particular color on the CPP film, the third mode is when producing CPP, directly the look mother of particular color is distributed in polyacrylic resin material again the mode one-shot forming through coextrusion casting, when the third mode is produced comparatively speaking, cost is minimum, and is also the most quick.But dispersed poor due to general domestic look mother in acrylic resin, the appearance property of the milky white polypropylene casting film of domestic production at present is not also very perfect, than being easier to produce the open defect such as orange peel line.In addition, the dispersion of white master material in film is uneven, the problem such as also can cause film corona to process bad, printing or composite effect is poor.
Summary of the invention
The problems such as the purpose of this utility model is to provide the milky white film of a kind of cast polypropylene, and existing milky white polypropylene casting film outward appearance is poor to solve, white master material disperses uneven, film corona to process bad, printing or composite effect is poor.
The utility model is solved the problems of the technologies described above by following technical proposals: the milky white film of a kind of cast polypropylene, the milky white film of this polypropylene is composited by hot sealing layer, sandwich layer and corona processing layer, in the middle of wherein hot sealing layer and corona processing layer are interposed in sandwich layer.
As preferably, the bed thickness of described hot sealing layer, sandwich layer and corona layer is than being 1:3:1.
As preferably, described hot sealing layer surface also is distributed with a plurality of pits.
As preferably, described hot sealing layer surface also has a smooth layer.
The utlity model has specious, good shading effect, color and luster evenly, good, the printing of adhesion mutually, opening or the characteristics such as composite effect is good.It adopts coextrusion casting production, and the surface of film has certain roughness.Stack or roll up while putting together in finished films like this, can allow between each thin layer and retain a certain amount of air, thereby reduce between film effectively contact area, reached the effect that prevents film blocking.Slipping agent is dispersed in plastic sheeting by melt extruding, and can migrate to fast film surface finally in producing and using, and forms a smooth layer, reduce the coefficient of friction of film surface, make it not adhesion mutually, order unreels and cuts more smooth and easy, and has good opening.
Description of drawings
Below in conjunction with the drawings and specific embodiments, the technical solution of the utility model is described in further detail.
Fig. 1 is structural representation of the present utility model.
The specific embodiment
Below by the specific embodiment, the technical solution of the utility model is described in further detail.
Fig. 1 is structural representation of the present utility model.In conjunction with Fig. 1 as can be known, the milky white film of this polypropylene is composited by hot sealing layer 1, sandwich layer 2 and corona processing layer 3, in the middle of wherein hot sealing layer 1 and corona processing layer 3 were interposed in sandwich layer 2, the bed thickness of described hot sealing layer 1, sandwich layer 2 and corona layer 3 was than being 1:3:1, and hot sealing layer 1 surface also is distributed with a plurality of pits 4.
Wherein hot sealing layer 1 is made by following weight ratio: 100 parts of polypropylene terpolymer, synthetic silica 2000ppm, high-purity mustard acyl acid amide 1500ppm.Wherein synthetic silica is to do carrier with polypropylene in advance to carry out the blend granulation and make the polypropylene antibock Masterbatch, and in antibock Masterbatch, the content of synthetic silica is 10wt%; Wherein high-purity mustard acyl acid amide class slipping agent is to do carrier with polypropylene in advance to carry out the blend granulation and make the polypropylene smooth master batch, and in the polypropylene smooth master batch, the content of high-purity mustard acyl acid amide is 5wt%.After hot sealing layer formed, smooth master batch penetrated the hot sealing layer surface and forms a smooth layer 5.
Sandwich layer 2 is made by following weight ratio: 100 parts of polypropylene homo resins, 16 parts of rutile titanium dioxide masterbatch, high-purity mustard acyl acid amide 2000ppm.Wherein the titanium dioxide masterbatch is to do carrier with polypropylene in advance to carry out the blend granulation and make, and in masterbatch, titanium dioxide content is 70wt%; Wherein high-purity mustard acyl acid amide class slipping agent is to do carrier with polypropylene in advance to carry out the polypropylene smooth master batch that the blend granulation is made, and in the polypropylene smooth master batch, the content of high-purity mustard acyl acid amide is 5wt%.
Corona layer 3 is made by following weight ratio: 100 parts of polypropylene homo resins, 20 parts of rutile titanium dioxide masterbatch.
The material of above-mentioned three layers carries out film extrusion by three-layer co-extruded curtain coating mode.Product follow-up through cooling and shaping, thickness detection, sided corona treatment, rolling, Ageing Treatment, cut and pack, obtain final products.
Finally, should be pointed out that the above specific embodiment is only the more representational example of the present invention.Obviously, the invention is not restricted to the above-mentioned specific embodiment.Any simple modification, equivalent variations and modification that every foundation technical spirit of the present invention is done the above specific embodiment, all should think and belong to protection scope of the present invention.
Claims (1)
1. milky white film of cast polypropylene, it is characterized in that the milky white film of this polypropylene is composited by hot sealing layer, sandwich layer and corona processing layer, in the middle of wherein hot sealing layer and corona processing layer were interposed in sandwich layer, the bed thickness of described hot sealing layer, sandwich layer and corona layer was than being 1:3:1; The hot sealing layer surface distributed has a plurality of pits; The hot sealing layer surface also has a smooth layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201065733U CN203282749U (en) | 2013-03-10 | 2013-03-10 | Milky-white CPP (casting polypropylene) film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201065733U CN203282749U (en) | 2013-03-10 | 2013-03-10 | Milky-white CPP (casting polypropylene) film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203282749U true CN203282749U (en) | 2013-11-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013201065733U Expired - Fee Related CN203282749U (en) | 2013-03-10 | 2013-03-10 | Milky-white CPP (casting polypropylene) film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203282749U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103738032A (en) * | 2013-12-27 | 2014-04-23 | 宁波瑞成包装材料有限公司 | Preparation method of three-layer coextrusion high-hardness laser polypropylene film |
-
2013
- 2013-03-10 CN CN2013201065733U patent/CN203282749U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103738032A (en) * | 2013-12-27 | 2014-04-23 | 宁波瑞成包装材料有限公司 | Preparation method of three-layer coextrusion high-hardness laser polypropylene film |
| CN103738032B (en) * | 2013-12-27 | 2016-08-17 | 宁波瑞成包装材料有限公司 | A kind of manufacture method of the radium-shine polypropylene screen of three-layer co-extruded high rigidity |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131113 Termination date: 20190310 |