CN204529727U - Biaxial stretching BOPP protection film - Google Patents

Abstract

The utility model discloses a biaxially stretched BOPP protective film, which comprises a polypropylene base layer formed by biaxial stretching; one side of the polypropylene base layer is coated with an adhesive layer that does not leave any glue , the adhesive layer is formed by arranging several adhesive strips in parallel at intervals, or evenly arranged by dot-shaped adhesive blocks; the other side of the polypropylene base layer is compounded with a corona layer. The utility model selects the biaxially stretched polypropylene base layer as the base material, which is convenient for operation and automatic grinding and cutting, and greatly reduces the processing cost. At the same time, it adopts two to three layers of polypropylene base layer because its thickness is moderate, which solves the problem that the protective film is too soft or The problem of too high stiffness, meanwhile, the protective film of the utility model will not generate static electricity, and can be used repeatedly.

Description

Biaxially stretched BOPP protective film

technical field

The utility model relates to a BOPP film, in particular to a biaxially stretched BOPP protective film.

Background technique

BOPP film is a very important flexible packaging material. BOPP film is colorless, odorless, tasteless, non-toxic, and has high tensile strength, impact strength, rigidity, toughness and good transparency. The surface energy of BOPP film is low, and corona treatment is required before gluing or printing. After corona treatment, BOPP film has good printing adaptability, and can be overprinted to obtain exquisite appearance effects, so it is often used as the surface layer material of composite films. Glass, metal sheets, plastic sheets and other materials are prone to contact pollution or scratches during handling and use. However, when the protective film is too thin, it is not easy to operate. When it is thick, it will easily warp when it is pasted on the surface of curved glass, metal sheet, plastic sheet and other materials because of the high stiffness of PET.

Utility model content

The utility model overcomes the deficiencies of the prior art, provides a biaxially stretched BOPP protective film, solves the problems of the prior art that the protective film is too soft and the stiffness of the protective film is too high, and simultaneously solves the static problem of the existing protective film.

In order to solve the above-mentioned technical problems, the utility model adopts the following technical solutions:

A biaxially stretched BOPP protective film, comprising a polypropylene base layer, the polypropylene base layer is formed by biaxial stretching; one side of the polypropylene base layer is coated with an adhesive layer that does not leave any glue, and the bonding The agent layer is formed by arranging several adhesive strips in parallel and at intervals, or by evenly arranging dot-shaped adhesive blocks; the other side of the polypropylene base layer is compounded with a corona layer.

A further technical solution is to coat a pressure-sensitive adhesive layer on the adhesive layer.

A further technical solution is to compound a release film layer on the corona layer.

A further technical solution is that the polypropylene base layer has a 2-3 layer structure.

A further technical solution is that the dot-shaped adhesive block is one of a triangular dot-shaped adhesive block, an oval dot-shaped adhesive block, a circular dot-shaped adhesive block, and a diamond-shaped dot-shaped adhesive block.

A further technical solution is that the adhesive strip is a curved adhesive strip.

Compared with the prior art, the beneficial effect of the utility model is: the utility model selects the biaxially stretched polypropylene base layer as the base material, which is convenient for operation and automatic grinding and cutting, greatly reduces the processing cost, and adopts two to three layers The thickness of the polypropylene base layer is moderate, which solves the problem of too soft or too high stiffness of the protective film. At the same time, the protective film of the utility model does not generate static electricity and can be used repeatedly.

Description of drawings

Fig. 1 is a structural schematic diagram of an embodiment of the utility model.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further elaborated.

As shown in Figure 1, one embodiment of the utility model biaxially stretches BOPP protective film, comprises polypropylene base layer 3, and described polypropylene base layer is formed by biaxial stretching; Preferably, polypropylene base layer is 2 to 3 layer structure, Make sure it's not too thin or too thick. One side of the polypropylene base layer is coated with an adhesive layer 4 with no adhesive residue. Preferably, the adhesive layer in this embodiment is formed by arranging several curvilinear adhesive strips in parallel at intervals, or formed by The dot-shaped adhesive blocks are evenly arranged to make it portable and can be reused; the dot-shaped adhesive blocks can be triangular dot-shaped adhesive blocks, oval-shaped dot-shaped adhesive blocks, round dot-shaped adhesive blocks block, rhombus point sticky block.

In this embodiment, a layer of corona layer 2 is compounded on the other side of the polypropylene base layer, which can prevent static electricity. As a preferred embodiment, according to another embodiment of the present utility model, on the basis of the above embodiment, the adhesive layer is coated with a pressure-sensitive adhesive layer 5, which has high adhesion and high temperature resistance. And other characteristics, can be widely used in protective film.

Further, preferably, a layer of release film layer paper 1 is compounded on the corona layer, and may also be covered with a layer of release film layer.

"One embodiment", "another embodiment", "embodiment", etc. mentioned in this specification refer to the specific features, structures or characteristics described in conjunction with the embodiment included in the general description of this application In at least one embodiment of . The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure or characteristic is described in combination with any embodiment, it should be claimed that realizing such feature, structure or characteristic in combination with other embodiments also falls within the scope of the present invention.

Although the invention has been described herein with reference to a number of illustrative embodiments thereof, it is to be understood that numerous other modifications and implementations can be devised by those skilled in the art which will fall within the scope of the disclosure of this application. within the scope and spirit of the principles. More specifically, within the scope of the disclosure, drawings and claims of the present application, various modifications and improvements can be made to the components and/or layout of the subject combination layout. In addition to modifications and improvements in component parts and/or layout, other uses will be apparent to those skilled in the art.

Claims (6)

1. a biaxial stretching BOPP protection film, comprises polypropylene based layers, and described polypropylene based layers is formed by two-way stretch; It is characterized in that: described polypropylene based layers side is coated with the bond layer of not cull, described bond layer is arranged by some adhesive strip parallel interval and is formed, or is evenly arranged by point-like glue grume and form; Described polypropylene based layers opposite side compound one deck corona layer.

2. biaxial stretching BOPP protection film according to claim 1, is characterized in that described bond layer is coated with one deck pressure-sensitive adhesive layer.

3. biaxial stretching BOPP protection film according to claim 1, is characterized in that compound one deck release film layer on described corona layer.

4. biaxial stretching BOPP protection film according to claim 1, is characterized in that described polypropylene based layers is 2 to 3-tier architecture.

5. biaxial stretching BOPP protection film according to claim 1, is characterized in that described point-like glue grume is the one in trilateral point-like glue grume, oval point-like adhesive block, circular point-like glue grume, rhombus point-like adhesive block.

6. biaxial stretching BOPP protection film according to claim 1, is characterized in that described adhesive strip is curve adhesive strip.