CN202805830U

CN202805830U - Novel BOPP (biaxially-oriented polypropylene) film

Info

Publication number: CN202805830U
Application number: CN 201220422585
Authority: CN
Inventors: 杜焕平
Original assignee: GUANGDONG ZHONGJU PLASTIC CO Ltd
Current assignee: GUANGDONG ZHONGJU PLASTIC CO Ltd
Priority date: 2012-08-24
Filing date: 2012-08-24
Publication date: 2013-03-20
Anticipated expiration: 2022-08-24

Abstract

The utility model designs a novel BOPP (biaxially-oriented polypropylene) film which comprises an upper surface layer, a core layer and a lower surface layer, wherein the core layer is arranged between the upper surface layer and the lower surface layer; the upper surface layer, the core layer and the lower surface layer are coextruded to be molded by a multi-layer co-extrusion technology; the upper surface layer is a PE (polyethylene) ventilated membrane; the core layer is a PP (polypropylene) film; and the lower surface layer is also the PE ventilated membrane. The utility model aims at providing the novel BOPP film. The novel BOPP film overcomes the defects that the traditional BOPP film does not have hot pressing procedure and static electricity is easily accumulated, and can be more widely applied to the field of a flexible packaging material. The thickness control technology is improved, so that the thickness deviation in longitudinal and transverse directions is effectively controlled, and meanwhile, the production cost of an enterprise is reduced due to low material price.

Description

A kind of novel B OPP film

Technical field

The utility model relates to a kind of film, especially a kind of novel B OPP film.

Background technology

Traditional B OPP film is a kind of very important flexible packing material, nontoxic, tasteless, odorless, colourless is its principal character, simultaneously, the BOPP film has high tensile, impact strength, rigidity, obdurability and the good transparency, is applicable to the packing of cigarette case, medicine box, cosmetic container.

Although traditional B OPP film has above-mentioned advantage, it does not have the defective of heat sealability and easy accumulation static still to limit the range of its application.

The utility model content

The purpose of this utility model is, solves the problem of prior art, and a kind of novel B OPP film is provided, and overcomes the defective that it does not have heat sealability and accumulates easily static.

For solving the problems of the technologies described above, the utility model is realized in the following manner: a kind of novel B OPP film comprises upper epidermis, sandwich layer and lower top layer; Sandwich layer is between upper epidermis and lower top layer; Multi-layer co-extruded technology coextrusion mold is adopted on upper epidermis, sandwich layer and lower top layer.

Further, described upper epidermis is the PE ventilated membrane, strengthens its air permeable effect, is not easy to accumulate static.

Further, described sandwich layer is the PP film, improves its heat sealability.

Further, described lower top layer is the PE ventilated membrane, strengthens its air permeable effect, is not easy to accumulate static.

The beneficial effects of the utility model are, a kind of novel B OPP film is provided, and it has overcome the defective that traditional B OPP film does not have hot pressing type and accumulates easily static, can more be widely used in the flexible packing material field, because its material price is cheap, is conducive to enterprise and reduces production costs simultaneously.

Description of drawings

Fig. 1 is the utility model structural representation.

The specific embodiment

As shown in Figure 1, a kind of novel B OPP film comprises upper epidermis 1, sandwich layer 2 and lower top layer 3; Upper epidermis 1 is the PE ventilated membrane, strengthens its air permeable effect, is not easy to accumulate static; Sandwich layer 2 is the PP film, improves its heat sealability; Lower top layer 3 is the PE ventilated membrane, strengthens its air permeable effect, is not easy to accumulate static; Multi-layer co-extruded technology coextrusion mold is adopted on upper epidermis 1, sandwich layer 2 and lower top layer 3.The utility model adopts multi-layer co-extruded technology, and upper epidermis 1 and lower top layer 3 organically combine with sandwich layer 2.

This film is preferably improving Thickness Control Technology so that the apparatus and process that vertical and horizontal thickness deviation is effectively controlled is produced.

After tested, the key technical indexes of this novel B OPP film is as follows:

Thickness: 25 μ m;

Heat-sealing window: 90 ℃;

Heat seal strength: 5N;

Coefficient of friction: 0.3;

Wetting tension: 45mN/m.

Claims

1. a novel B OPP film is characterized in that, described BOPP film comprises upper epidermis, sandwich layer and lower top layer; Sandwich layer is between upper epidermis and lower top layer; Multi-layer co-extruded technology coextrusion mold is adopted on upper epidermis, sandwich layer and lower top layer.

2. novel B OPP film according to claim 1 is characterized in that, described upper epidermis is the PE ventilated membrane.

3. novel B OPP film according to claim 1 is characterized in that, described sandwich layer is the PP film.

4. novel B OPP film according to claim 1 is characterized in that, described lower top layer is the PE ventilated membrane.