Technical field
The utility model relates to the plastic sheeting technical field, particularly a kind of transparent BOPP film.
Background technology
At present, outdoor employed advertising lamp sheet is general to adopt transparent plastic foil to process, then spraying advertisement propaganda paintings the effect of publicity on plastic foil; But the advertising lamp sheet of the type drenches Exposure to Sunlight through outdoor water occurs phenomenons such as bending, slight crack easily; Had a strong impact on the service life of advertising lamp sheet, and the advertisement coating is prone to the layering that comes off, fades easily after advertising poster sprays up, color is dim; Tarnish, advertising effect are not good.Chinese patent number: 200920061104.8, a kind of novel advertisement lamp sheet is disclosed, comprise the PET thin layer, but described PET thin layer surfaces coated is covered with the coating of spraying advertisement picture and text layer.Produce the density of this kind PET film and generally need accomplish 1.35-1.40 g/cm 3, and its production cost is higher.
Summary of the invention
Therefore, to above-mentioned problem, it is high that the utility model proposes the low thickness of a kind of density, the transparent BOPP film that production cost is low and mist degree is low.
For solving this technical problem; The utility model is taked following scheme: a kind of transparent BOPP film; Be made up of upper epidermis, sandwich layer and following top layer, said upper epidermis, sandwich layer and following top layer are all through coextrusion biaxial tension one-shot forming, and said upper epidermis is the corona layer; Sandwich layer is a polypropylene layer, and following top layer is a polypropylene layer.
Further, said transparent BOPP film thickness is 60 – 120um.
Through adopting the aforementioned techniques scheme, the beneficial effect of the utility model is: through the transparent BOPP film that said structure is produced, can replace the PET film to use as the lamp sheet, and its density ability 0.90-0.92 g/cm when transparent BOPP film and PET film condition of equivalent thickness 3, make transparent BOPP film have more advantage; And the mist degree of transparent BOPP film is lower than 2.0%, makes its transparent effect splendid; Because of the main material of producing transparent BOPP film is the PP polypropylene, make that its production cost is lower again; But and transparent BOPP the film also wiring board, high-grade handbag printed matter or the like of extensive use electronic applications.
Description of drawings
Fig. 1 is the section structure sketch map of the utility model embodiment one.
The specific embodiment
Combine the accompanying drawing and the specific embodiment that the utility model is further specified at present.
With reference to figure 1; A kind of three-layer co-extruded heat sealable type pearly-lustre film of preferred the utility model; By upper epidermis 1, sandwich layer 2 and down top layer 3 constitute, said upper epidermis 1, sandwich layer 2 and top layer 3 is all through coextrusion biaxial tension one-shot forming down, said upper epidermis 1 is the corona layer; Sandwich layer is a polypropylene layer, and following top layer is a polypropylene layer.Said transparent BOPP film thickness is 100um.
Transparent BOPP film thickness is advisable with 60 – 120um in the utility model.
Through the transparent BOPP film that said structure is produced, can replace the PET film to use as the lamp sheet, and its density ability 0.90-0.92 g/cm3 when transparent BOPP film and PET film condition of equivalent thickness, make transparent BOPP film have more advantage; And the mist degree of transparent BOPP film is lower than 2.0%, makes its transparent effect splendid; Because of the main material of producing transparent BOPP film is the PP polypropylene, make that its production cost is lower again; But and transparent BOPP the film also wiring board, high-grade handbag printed matter or the like of extensive use electronic applications.
Although specifically show and introduced the utility model in conjunction with preferred embodiment; But the those skilled in the art should be understood that; In the spirit and scope of the utility model that does not break away from appended claims and limited; Can make various variations to the utility model in form with on the details, be the protection domain of the utility model.
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