CN217398812U - BOPP (biaxially-oriented polypropylene) antistatic release film - Google Patents

Abstract

The application relates to the technical field of BOPP adhesive tapes, in particular to a BOPP anti-static release film. A BOPP anti-static release film comprises a BOPP surface layer composite film, an antistatic core layer and a BOPP inner layer composite film, wherein one surface of the BOPP inner layer composite film is compounded with an adhesive, and the other surface of the BOPP inner layer composite film is compounded with the antistatic core layer; one surface of the BOPP surface layer composite film is compounded with the antistatic core layer, and the other surface of the BOPP surface layer composite film is compounded with the release layer; the BOPP surface layer composite film comprises a pure BOPP film and a conductive BOPP film; the conductive BOPP films are located between the adjacent BOPP films. The application has better antistatic performance and gas barrier performance, and the use safety is better.

Description

BOPP (biaxially-oriented polypropylene) antistatic release film

Technical Field

The application relates to the technical field of BOPP adhesive tapes, in particular to a BOPP anti-static release film.

Background

The BOPP adhesive tape has the advantages of good corrosion resistance, good heat resistance, good optical property of the film and high mechanical strength. Therefore, the BOPP tape is an indispensable packaging product in light industrial enterprises, companies and personal life, and is widely applied to the packaging fields of food, candy, tobacco, tea, fruit juice, milk, textiles and the like.

Currently, the BOPP tapes in the related art include BOPP films and adhesives, wherein the adhesives are mainly formed by pressure sensitive adhesive emulsion and mainly contain butyl ester. The adhesive is coated on the surface of the biaxial stretching polypropylene film to form an adhesive layer with different thickness of 8-28 microns. The surface of the BOPP film is low in bonding strength, and therefore after the surface of the BOPP film is subjected to high-voltage corona treatment, the surface subjected to the high-voltage corona treatment is rough, and the bonding stability with a bonding adhesive layer is improved.

For the BOPP tape in the related art, the applicant finds that the following defects exist in the technical solution: the biaxially oriented polypropylene film BOPP in the related art is easy to generate static electricity when in use, thereby affecting the packaging safety and limiting the application range and popularization of the biaxially oriented polypropylene film BOPP. Therefore, a BOPP antistatic agent is added in the production process of the BOPP film so as to improve the overall antistatic property. However, the addition of the BOPP antistatic agent can cause micropores to easily appear in the biaxial stretching process of the BOPP film, and further affect the gas barrier property of the finished BOPP film. In summary, the BOPP films in the related art have the problem that the antistatic property and the gas barrier property are not compatible, and the application range of the BOPP films is limited.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that a BOPP film in the related art is incompatible in antistatic property and gas barrier property, the application provides a BOPP anti-static release film.

The application provides a BOPP prevents static from type membrane, is realized through following technical scheme:

a BOPP anti-static release film comprises a BOPP surface layer composite film, an antistatic core layer and a BOPP inner layer composite film, wherein one surface of the BOPP inner layer composite film is compounded with an adhesive, and the other surface of the BOPP inner layer composite film is compounded with the antistatic core layer; one surface of the BOPP surface layer composite film is compounded with the antistatic core layer, and the other surface of the BOPP surface layer composite film is compounded with the release layer; the BOPP surface layer composite film comprises a pure BOPP film and a conductive BOPP film; the conductive BOPP films are located between the adjacent BOPP films.

Through adopting above-mentioned technical scheme, electrically conductive BOPP film in this application can eliminate the electric charge that the surface produced, and the electric charge that the inside produced also can be eliminated to antistatic sandwich layer simultaneously, consequently, this application has better antistatic performance. In addition, antistatic core layer has better gas barrier property, therefore, this application has better antistatic properties and gas barrier property, and the safety in utilization is better.

Preferably, the BOPP film is integrally formed with micropores penetrating the upper and lower surfaces; and a conductive polyaniline coating is compounded on the surface of the BOPP film, which faces away from the antistatic core layer.

By adopting the technical scheme, the electric charges generated on the surface can be further eliminated by arranging the conductive polyaniline coating, and the antistatic performance of the antistatic coating is improved.

Preferably, first adhesion promotion layers are formed on the upper surface and the lower surface of the BOPP surface layer composite film; second adhesion promotion layers are formed on the upper surface and the lower surface of the antistatic core layer; and third tackifying layers are formed on the upper surface and the lower surface of the BOPP inner-layer composite film.

Through adopting above-mentioned technical scheme, can improve the holistic bonding stability of this application, and then promote the stability in use and the life of this application.

Preferably, the thickness of the BOPP surface layer composite film and the thickness of the BOPP inner layer composite film are controlled to be 20-30 micrometers; the antistatic core layer is controlled to be 40-50 micrometers; the BOPP surface layer composite film, the antistatic core layer and the BOPP inner layer composite film are controlled to be 1: 1.8-2.2: 1.

through adopting above-mentioned technical scheme, not only can guarantee the quality of this application, can realize standardized operation production moreover, reduce holistic manufacturing cost.

Preferably, the antistatic core layer comprises a first BOPET film, a conductive mesh and a second BOPET film; the conductive mesh cloth is compounded between the first BOPET film and the second BOPET film; the thickness ratio of the first BOPET film to the second BOPET film is controlled to be 1-1.05: 1-1.05.

By adopting the technical scheme, the antistatic performance and tensile strength of the antistatic core layer of the conductive mesh cloth can be effectively improved, and further the mechanical strength and the antistatic performance of the conductive mesh cloth can be improved.

Preferably, the conductive mesh cloth is a plain weave tissue woven by warps and wefts; the warp and weft in the conductive mesh cloth have the same composition; the warp threads in the conductive mesh cloth comprise conductive wires.

By adopting the technical scheme, the antistatic performance and tensile strength of the antistatic core layer can be effectively improved, and further the mechanical strength and the antistatic performance of the antistatic core layer can be improved.

Preferably, the conductive yarn is one of carbon fiber IV, conductive polyester yarn, composite conductive aramid yarn and metal wire; the composite conductive aramid fiber yarn is composed of aramid fiber yarn and a conductive coating compounded on the outer wall of the aramid fiber yarn.

By adopting the technical scheme, the antistatic performance, the tensile strength and the tear strength of the antistatic core layer can be effectively improved, and further the mechanical strength and the antistatic performance of the antistatic core layer can be improved.

Preferably, the warp threads in the conductive mesh cloth comprise conductive threads and UHMWPE threads, and the conductive threads and the UHMWPE threads are arranged at intervals along the weft direction.

By adopting the technical scheme, the tensile strength and the tear strength of the cable can be further improved by the UHMWPE yarns, so that the cable has better tensile and tear resistance.

Preferably, a reinforced barrier layer is compounded between the BOPP surface layer composite film and the antistatic core layer.

Through adopting above-mentioned technical scheme, can further strengthen the gas barrier property of this application.

In summary, the present application has the following advantages:

1. the application has better antistatic performance and gas barrier performance, and the use safety is better.

2. The anti-stretching and anti-tearing fabric has the advantages of better anti-stretching and anti-tearing performances and longer service life.

Drawings

Fig. 1 is a schematic view of the overall structure of embodiment 1 in the present application.

Fig. 2 is a partially enlarged view of a point a in fig. 2.

Fig. 3 is a schematic structural diagram of the conductive mesh fabric in example 1 of the present application.

Fig. 4 is a schematic structural diagram of the conductive mesh fabric in example 2 of the present application.

Fig. 5 is a schematic view of the overall structure of embodiment 3 in the present application.

In the figure, 1, a BOPP surface layer composite film; 10. a first adhesion promoting layer; 11. a BOPP film; 111. micropores; 112. a conductive polyaniline coating; 12. a conductive BOPP film; 2. an antistatic core layer; 20. a second adhesion promoting layer; 21. a first BOPET film; 22. conducting mesh cloth; 221. a conductive filament; 222. UHMWPE filaments; 23. a second BOPET film; 3. a BOPP inner layer composite membrane; 30. a third adhesion promoting layer; 4. a release layer; 5. the barrier layer is reinforced.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples.

Example 1

Referring to fig. 1, the BOPP antistatic release film disclosed in the present application includes a BOPP surface composite film 1, an antistatic core layer 2, and a BOPP inner layer composite film 3, wherein one surface of the BOPP inner layer composite film 3 is compounded with an adhesive, and the other surface of the BOPP inner layer composite film is compounded with the antistatic core layer 2. One surface of the BOPP surface layer composite film 1 is compounded with the antistatic core layer 2, the other surface is coated with a silicon-coated release agent, and a release layer 4 is formed by curing.

Referring to fig. 1, the thicknesses of the BOPP surface layer composite film 1 and the BOPP inner layer composite film 3 are controlled to be 20 to 30 micrometers, and in this embodiment, the thicknesses of the BOPP surface layer composite film 1 and the BOPP inner layer composite film 3 are controlled to be 20 micrometers. The antistatic core layer 2 is controlled to be 40-50 micrometers, and the antistatic core layer 2 is controlled to be 40 micrometers in this embodiment. The BOPP surface layer composite film 1, the antistatic core layer 2 and the BOPP inner layer composite film 3 are controlled to be 1: 2: 1.

referring to fig. 1, in order to improve the overall bonding stability of the present application, first adhesion promotion layers 10 are formed on the upper and lower surfaces of a BOPP surface layer composite film 1, second adhesion promotion layers 20 are formed on the upper and lower surfaces of an antistatic core layer 2, and third adhesion promotion layers 30 are formed on the upper and lower surfaces of a BOPP inner layer composite film 3.

Referring to fig. 1 and 2, a BOPP skin composite film 1 includes a pure BOPP film 11 and a conductive BOPP film 12; the conductive BOPP films 12 are located between adjacent BOPP films 11. The BOPP film 11 is integrally formed with micropores 111 penetrating the upper and lower surfaces. The surface of the BOPP film 11, which is opposite to the antistatic core layer 2, is compounded with a conductive polyaniline coating 112.

Referring to fig. 1, the antistatic core layer 2 includes a first BOPET film 21, a conductive mesh 22, and a second BOPET film 23, and the conductive mesh 22 is compounded between the first BOPET film 21 and the second BOPET film 23. The thickness ratio of the first BOPET film 21 to the second BOPET film 23 is controlled to be 1: 1.

Referring to FIG. 3, the conductive mesh 22 is a plain weave of warp and weft yarns. The warp and weft in the conductive mesh fabric 22 have the same composition, and the warp in the conductive mesh fabric 22 includes the conductive wire 221. The conductive yarn 221 is one of carbon fiber yarn, conductive polyester yarn, composite conductive aramid yarn, and metal wire. In this embodiment, the conductive filament 221 is a composite conductive aramid filament, and the composite conductive aramid filament is composed of an aramid filament and a conductive coating compounded on the outer wall of the aramid filament.

A preparation method of a BOPP anti-static release film comprises the following steps:

firstly, a first tackifying and stabilizing layer 20 is formed on a BOPP surface layer composite film 1 through low-temperature plasma treatment, and a conductive polyaniline coating 112 is formed by coating conductive polyaniline paint on the surface of a BOPP film 11 in the BOPP surface layer composite film 1, which is opposite to an antistatic core layer 2, and curing the conductive polyaniline paint; the BOPP inner layer composite film 3 is subjected to low-temperature plasma treatment to form a first tackifying and stabilizing layer 20; the low-temperature plasma treatment parameters, power of 70W, temperature control at 0-4 ℃, treatment gas of air and treatment time of 15 min;

step two, preparing the antistatic core layer 2, stacking the first BOPET film 21, the conductive mesh 22 and the second BOPET film 23, performing hot-pressing composite treatment, cooling, performing low-temperature plasma treatment, controlling the power to be 65W, controlling the temperature to be 0-4 ℃, treating gas to be oxygen, and treating for 20 min;

and thirdly, stacking the BOPP surface layer composite film 1, the antistatic core layer 2 and the BOPP inner layer composite film 3, performing hot-pressing composite treatment, and cooling to obtain the finished product BOPP antistatic release film.

Example 2

Example 2 differs from example 1 in that: referring to fig. 4, the warp threads in the conductive mesh fabric 22 include conductive threads 221 and UHMWPE threads 222, and the conductive threads 221 are conductive polyester threads. The number of the conductive filaments 221 and the UHMWPE filaments 222 is 1:1, and the UHMWPE filaments 222 are arranged at intervals in the weft direction.

Example 3

Example 3 differs from example 1 in that: referring to fig. 5, a reinforced barrier layer 5 is compounded between the BOPP surface layer composite film 1 and the antistatic core layer 2. The reinforced barrier layer 5 is a PEN film or an LCP film, and the PEN film is used in this embodiment to enhance the gas barrier property of the reinforced barrier layer 5.

The embodiments of the present invention are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (9)

1. The utility model provides a BOPP prevents static from type membrane which characterized in that: the BOPP composite film comprises a BOPP surface layer composite film (1), an antistatic core layer (2) and a BOPP inner layer composite film (3), wherein one surface of the BOPP inner layer composite film (3) is compounded with an adhesive, and the other surface of the BOPP inner layer composite film is compounded with the antistatic core layer (2); one surface of the BOPP surface layer composite film (1) is compounded with the antistatic core layer (2), and the other surface is compounded with the release layer (4); the BOPP surface layer composite film (1) comprises a pure BOPP film (11) and a conductive BOPP film (12); the conductive BOPP films (12) are positioned between the adjacent BOPP films (11).

2. The BOPP anti-static release film according to claim 1, wherein: the BOPP film (11) is integrally formed with micropores (111) penetrating through the upper surface and the lower surface; and a conductive polyaniline coating (112) is compounded on the surface of the BOPP film (11) back to the antistatic core layer (2).

3. The BOPP anti-static release film according to claim 1, wherein: the upper surface and the lower surface of the BOPP surface layer composite film (1) are provided with a first tackifying layer (10); second adhesion promotion layers (20) are formed on the upper surface and the lower surface of the antistatic core layer (2); and third tackifying layers (30) are formed on the upper surface and the lower surface of the BOPP inner-layer composite film (3).

4. The BOPP anti-static release film according to claim 1, wherein: the thickness of the BOPP surface layer composite film (1) and the thickness of the BOPP inner layer composite film (3) are controlled to be 20-30 micrometers; the antistatic core layer (2) is controlled to be 40-50 microns; BOPP top layer complex film (1), antistatic sandwich layer (2), BOPP inlayer complex film (3) control are at 1: 1.8-2.2: 1.

5. the BOPP anti-static release film according to claim 1, wherein: the antistatic core layer (2) comprises a first BOPET film (21), a conductive mesh (22) and a second BOPET film (23); the conductive mesh cloth (22) is compounded between the first BOPET film (21) and the second BOPET film (23); the thickness ratio of the first BOPET film (21) to the second BOPET film (23) is controlled to be 1-1.05: 1-1.05.

6. The BOPP anti-static release film according to claim 5, wherein: the conductive mesh cloth (22) is a plain weave tissue woven by warps and wefts; the warp and weft in the conductive mesh cloth (22) are the same in composition; the warp threads in the conductive mesh cloth (22) comprise conductive wires (221).

7. The BOPP anti-static release film according to claim 6, wherein: the conductive yarn (221) is one of carbon fiber IV, conductive polyester yarn, composite conductive aramid yarn and metal wire; the composite conductive aramid fiber yarn is composed of aramid fiber yarn and a conductive coating compounded on the outer wall of the aramid fiber yarn.

8. The BOPP anti-static release film according to claim 6, characterized in that: the warp threads in the conductive mesh cloth (22) comprise conductive wires (221) and UHMWPE wires (222), and the conductive wires (221) and the UHMWPE wires (222) are arranged at intervals along the weft direction.

9. The BOPP anti-static release film according to claim 6, wherein: and a reinforced barrier layer (5) is compounded between the BOPP surface layer composite film (1) and the antistatic core layer (2).

Images