Anti-static paper adhesive tape and preparation method thereof

Abstract

The invention discloses an anti-static paper adhesive tape and a preparation method thereof, the anti-static paper adhesive tape comprises a base material, a first impregnation layer and a second impregnation layer, the first impregnation layer and the second impregnation layer are formed on two opposite sides of the base material, an anti-static layer is arranged on the first impregnation layer, an adhesive layer is arranged on the second impregnation layer, and the base material is a paper base material. According to the anti-static paper adhesive tape and the preparation method thereof disclosed by the invention, the paper base material is used for replacing a conventional polymer film base material, so that the effect of recycling the adhesive tape is realized, and the damage of the adhesive tape to the environment is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of adhesive tapes, and in particular relates to an antistatic paper adhesive tape and a preparation method thereof. Background Art

[0002] Antistatic tape is used for pasting electrostatic sensitive devices, sealing packaging bags and packaging other electronic products. Existing commercially available products are mainly grid tape and transparent tape. The base material is mainly film, which cannot be recycled after use, forming white pollution and damaging the environment.

[0003] The information disclosed in this background technology section is only intended to enhance the understanding of the overall background of the invention and should not be regarded as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Summary of the invention

[0004] The object of the present invention is to provide an antistatic paper tape and a preparation method thereof, which can be recycled and reused to avoid pollution to the environment.

[0005] In order to achieve the above-mentioned purpose, a technical solution provided by a specific embodiment of the present invention is as follows: an antistatic paper tape comprises a substrate, and a first impregnation layer and a second impregnation layer formed on opposite sides of the substrate, the first impregnation layer is provided with an antistatic layer, the second impregnation layer is provided with an adhesive layer, and the substrate is a paper substrate.

[0006] In one or more embodiments of the present invention, the first impregnation layer and the second impregnation layer are made of an impregnation liquid, and the impregnation liquid includes at least one of acrylic emulsion, styrene-butadiene emulsion, styrene-acrylic emulsion, chloroprene emulsion, and nitrile emulsion.

[0007] In one or more embodiments of the present invention, the adhesive layer is made of an adhesive, and the adhesive is one of a rubber-based pressure-sensitive adhesive and an acrylate-based pressure-sensitive adhesive.

[0008] In one or more embodiments of the present invention, the antistatic layer is made of polythiophene antistatic liquid.

[0009] In one or more embodiments of the present invention, a release layer is provided on the side of the antistatic layer facing away from the substrate.

[0010] In one or more embodiments of the present invention, the release layer is made of a release liquid, and the release liquid includes one of a long-chain alkyl compound, a copolymer or a blend, and an organic silicon release agent.

[0011] A specific embodiment of the present invention further provides a method for preparing the antistatic paper tape as described above, comprising the following steps:

[0012] The substrate is immersed in the impregnation liquid, so that the impregnation liquid fully penetrates into the interior of the substrate, and after heating and drying, a first impregnation layer and a second impregnation layer are formed on opposite sides of the substrate respectively;

[0013] Coating a polythiophene antistatic liquid on the first impregnation layer, and heating and drying to obtain an antistatic layer;

[0014] An adhesive is coated on the second impregnation layer, and then heated and dried to obtain an adhesive layer.

[0015] In one or more embodiments of the present invention, in the step of forming the first impregnation layer and the second impregnation layer on opposite sides of the substrate after heating and drying, the heating temperature is 80 to 140° C. and the heating time is 1 to 2 minutes;

[0016] In the step of obtaining the antistatic layer after heating and drying, the heating temperature is 80 to 140° C. and the heating time is 1 to 2 minutes;

[0017] In the step of obtaining the adhesive layer after heating and drying, the heating temperature is 60 to 120° C. and the heating time is 1 to 3 minutes.

[0018] In one or more embodiments of the present invention, the preparation method further comprises:

[0019] A release liquid is coated on the antistatic layer, and the release layer is obtained after heating and drying.

[0020] In one or more embodiments of the present invention, in the step of obtaining the release layer after heating and drying, the heating temperature is 80-160° C. and the heating time is 1-2 min.

[0021] Compared with the prior art, the antistatic paper tape and preparation method thereof of the present invention achieves the effect of recycling and reusing the tape by using a paper substrate instead of a conventional polymer film substrate, thereby avoiding damage to the environment caused by the tape. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in combination with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0023] An antistatic paper tape in one embodiment of the present invention includes a substrate, and a first impregnated layer and a second impregnated layer formed on opposite sides of the substrate, the first impregnated layer is provided with an antistatic layer, the second impregnated layer is provided with an adhesive layer, and the substrate is a paper substrate.

[0024] It can be understood that by using paper substrates instead of conventional polymer film substrates, the effect of recycling and reusing the tape is achieved, thereby avoiding damage to the environment caused by the tape.

[0025] The paper substrate can be textured paper, Japanese paper, kraft paper, etc., and its thickness is preferably 30-80g / m 2 , that is, the thickness of the paper substrate is determined according to the mass per square meter.

[0026] Specifically, the first impregnation layer and the second impregnation layer are made of an impregnation liquid, and the impregnation liquid includes at least one of acrylic emulsion, styrene-butadiene emulsion, styrene-acrylic emulsion, chloroprene emulsion, and nitrile emulsion. For example, the impregnation liquid can be styrene-butadiene emulsion LIGOS of Trinseo. TM I-4616.

[0027] The first impregnation layer and the second impregnation layer can be formed by immersing the substrate in an impregnation liquid, then taking it out, and heating and drying it. Therefore, the first impregnation layer and the second impregnation layer can be formed inside the substrate and on the surface of the substrate. Preferably, the total impregnation amount of the first impregnation layer and the second impregnation layer is preferably 10 to 25 g / m 2 .

[0028] Specifically, the adhesive layer is made of an adhesive, and the adhesive is one of a rubber-based pressure-sensitive adhesive and an acrylate-based pressure-sensitive adhesive. For example, the adhesive may be the acrylate pressure-sensitive adhesive W-800 produced by Jinghua Company.

[0029] Specifically, the antistatic layer is made of a polythiophene antistatic liquid. For example, the polythiophene antistatic liquid can be polyethylene dioxythiophene (PEDOT), which is obtained by polymerizing 3,4-ethylene dioxythiophene (EDOT) as a monomer. Preferably, the impregnation amount of the polythiophene antistatic liquid is preferably 0.5 to 2 g / m 2 .

[0030] Specifically, a release layer is provided on the side of the antistatic layer facing away from the substrate. The release layer is made of a release liquid, and the release liquid includes a long-chain alkyl compound, a copolymer or a blend, and a silicone release agent. For example, the release liquid can be SUNCRYL CL 223B of Omnofa. Preferably, the impregnation amount of the polythiophene antistatic liquid is preferably 0.5 to 3.5 g / m 2 .

[0031] A specific embodiment of the present invention further provides a method for preparing an antistatic paper tape, which can be used to prepare the above-mentioned antistatic paper tape. The preparation method comprises the following steps:

[0032] The substrate is immersed in the impregnation liquid, so that the impregnation liquid fully penetrates into the interior of the substrate, and after heating and drying, a first impregnation layer and a second impregnation layer are formed on opposite sides of the substrate respectively;

[0033] Coating a polythiophene antistatic liquid on the first impregnation layer, and heating and drying to obtain an antistatic layer;

[0034] An adhesive is coated on the second impregnation layer, and then heated and dried to obtain an adhesive layer.

[0035] Specifically, in the step of forming a first impregnation layer and a second impregnation layer on opposite sides of the substrate after heating and drying, the heating temperature is 80 to 140°C, preferably 90 to 120°C, and the heating time is 1 to 2 min; in the step of obtaining an antistatic layer after heating and drying, the heating temperature is 80 to 140°C, preferably 100 to 120°C, and the heating time is 1 to 2 min; in the step of obtaining an adhesive layer after heating and drying, the heating temperature is 60 to 120°C, preferably 8 to 120°C, and the heating time is 1 to 3 min.

[0036] The preparation method further comprises: coating a release liquid on the antistatic layer, and obtaining a release layer after heating and drying. Specifically, in the step of obtaining the release layer after heating and drying, the heating temperature is 80 to 160° C., preferably 120 to 140° C., and the heating time is 1 to 2 minutes.

[0037] The antistatic paper tape and the preparation method thereof of the present invention will be described in detail below in conjunction with specific embodiments.

[0038] Example 1

[0039] First, the substrate (weight 40g / m 2 ) is immersed in the impregnation liquid, and the impregnation liquid is fully impregnated into the interior of the substrate by double-sided extrusion, and then put into the oven for drying, the drying temperature is 110°C, the drying time is 2min, and the first impregnation layer and the second impregnation layer are obtained (the total impregnation amount of the first impregnation layer and the second impregnation layer is 15g / m 2 ).

[0040] Coat a layer of polythiophene antistatic liquid (weight 0.5g / m 2 ), and then put it into an oven for drying at a drying temperature of 110° C. for a drying time of 2 min to obtain an antistatic layer.

[0041] Apply a layer of release liquid (weight 3.5g / m 2 ), and put it into an oven for drying at a drying temperature of 130° C. for a drying time of 2 min to obtain a release layer.

[0042] Apply a layer of adhesive (weight 30g / m2 ), enter into an oven for drying, the drying temperature is 100° C., the drying time is 3 min, and an adhesive layer is obtained, namely, an antistatic paper tape is obtained.

[0043] Example 2

[0044] First, the substrate (weight 40g / m 2 ) is immersed in the impregnation liquid, and the impregnation liquid is fully impregnated into the interior of the substrate by double-sided extrusion, and then put into the oven for drying, the drying temperature is 110°C, the drying time is 2min, and the first impregnation layer and the second impregnation layer are obtained (the total impregnation amount of the first impregnation layer and the second impregnation layer is 15g / m 2 ).

[0045] Coat a layer of polythiophene antistatic liquid (weight 1g / m 2 ), and then put it into an oven for drying at a drying temperature of 110° C. for a drying time of 2 min to obtain an antistatic layer.

[0046] Apply a layer of release liquid (weight 3.5g / m 2 ), and put it into an oven for drying at a drying temperature of 130° C. for a drying time of 2 min to obtain a release layer.

[0047] Apply a layer of adhesive (weight 30g / m 2 ), enter into an oven for drying, the drying temperature is 100° C., the drying time is 3 min, and an adhesive layer is obtained, namely, an antistatic paper tape is obtained.

[0048] Example 3

[0049] First, the substrate (weight 40g / m 2 ) is immersed in the impregnation liquid, and the impregnation liquid is fully impregnated into the interior of the substrate by double-sided extrusion, and then put into the oven for drying, the drying temperature is 110°C, the drying time is 2min, and the first impregnation layer and the second impregnation layer are obtained (the total impregnation amount of the first impregnation layer and the second impregnation layer is 15g / m 2 ).

[0050] Coat a layer of polythiophene antistatic liquid (weight 1.5g / m 2 ), and then put it into an oven for drying at a drying temperature of 110° C. for a drying time of 2 min to obtain an antistatic layer.

[0051] Apply a layer of release liquid (weight 3.5g / m 2 ), and put it into an oven for drying at a drying temperature of 130° C. for a drying time of 2 min to obtain a release layer.

[0052] Apply a layer of adhesive (weight 30g / m 2), enter into an oven for drying, the drying temperature is 100° C., the drying time is 3 min, and an adhesive layer is obtained, namely, an antistatic paper tape is obtained.

[0053] Example 4

[0054] First, the substrate (weight 40g / m 2 ) is immersed in the impregnation liquid, and the impregnation liquid is fully impregnated into the interior of the substrate by double-sided extrusion, and then put into the oven for drying, the drying temperature is 110°C, the drying time is 2min, and the first impregnation layer and the second impregnation layer are obtained (the total impregnation amount of the first impregnation layer and the second impregnation layer is 15g / m 2 ).

[0055] Coat a layer of polythiophene antistatic liquid (weight 2g / m 2 ), and then put it into an oven for drying at a drying temperature of 110° C. for a drying time of 2 min to obtain an antistatic layer.

[0056] Apply a layer of release liquid (weight 3.5g / m 2 ), and put it into an oven for drying at a drying temperature of 130° C. for a drying time of 2 min to obtain a release layer.

[0057] Apply a layer of adhesive (weight 30g / m 2 ), enter into an oven for drying, the drying temperature is 100° C., the drying time is 3 min, and an adhesive layer is obtained, namely, an antistatic paper tape is obtained.

[0058] Example 5

[0059] First, the substrate (weight 40g / m 2 ) is immersed in the impregnation liquid, and the impregnation liquid is fully impregnated into the interior of the substrate by double-sided extrusion, and then put into the oven for drying, the drying temperature is 110°C, the drying time is 2min, and the first impregnation layer and the second impregnation layer are obtained (the total impregnation amount of the first impregnation layer and the second impregnation layer is 15g / m 2 ).

[0060] Coat a layer of polythiophene antistatic liquid (weight 2.5g / m 2 ), and then put it into an oven for drying at a drying temperature of 110° C. for a drying time of 2 min to obtain an antistatic layer.

[0061] Apply a layer of release liquid (weight 3.5g / m 2 ), and put it into an oven for drying at a drying temperature of 130° C. for a drying time of 2 min to obtain a release layer.

[0062] Apply a layer of adhesive (weight 30g / m 2), enter into an oven for drying, the drying temperature is 100° C., the drying time is 3 min, and an adhesive layer is obtained, namely, an antistatic paper tape is obtained.

[0063] Comparative Example 1

[0064] Same as Example 1, except that there is no static layer.

[0065] Comparative Example 2

[0066] The same as Example 1, the only difference is that the preparation process of the antistatic layer is:

[0067] Coat a layer of polythiophene antistatic liquid (weight 0.2g / m 2 ), and then put it into an oven for drying at a drying temperature of 110° C. for a drying time of 2 min to obtain an antistatic layer.

[0068] In Examples 1 to 5 and Comparative Examples 1 and 2, the impregnation liquid is the styrene butadiene emulsion LIGOS of Trinseo TM I 4616; the adhesive is acrylic pressure-sensitive adhesive W-800 produced by Jinghua Company; the release liquid is SUNCRYL CL 223B produced by Omnofa Company.

[0069] The following tests were performed on the antistatic paper tapes in Examples 1 to 5 and the paper tapes in Comparative Examples 1 and 2:

[0070] (1) Surface resistance test: Use a surface resistance tester to test the surface resistance of the tape. The value displayed by the tester is the test result.

[0071] (2) Tear-off voltage test: Use an electrostatic tester to perform a tear-off voltage test. Unroll the tape, set the test distance, and perform the test while the tape is being unwound. The value displayed on the tester is the test result.

[0072] The data shown in the following table is obtained:

[0073] Tear-off voltage(V) Surface resistance(Ω) Example 1 100～120 <![CDATA[10 8 ~10 9 ]]> Example 2 80～100 <![CDATA[10 8 ~10 9 ]]> Example 3 50～70 <![CDATA[10 7 ~10 8 ]]> Example 4 40～60 <![CDATA[10 6 ~10 7 <!-- 4 -->]]> Example 5 40～60 <![CDATA[10 6 ~10 7 ]]> Example 1 600～800 <![CDATA[10 10 ~10 11 ]]> Comparative Example 2 400～500 <![CDATA[10 9 ~10 10 ]]>

[0074] As shown in the above table, the antistatic paper tape of the present invention has good antistatic effect, and because a paper substrate is used instead of a conventional polymer film substrate, the tape can be recycled and reused, thereby avoiding damage to the environment caused by the tape.

[0075] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

[0076] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An antistatic paper tape, characterized in that: The invention comprises a substrate, and a first impregnation layer and a second impregnation layer formed on opposite sides of the substrate, wherein the first impregnation layer is provided with an antistatic layer, the second impregnation layer is provided with an adhesive layer, and the substrate is a paper substrate.

2. The antistatic paper tape according to claim 1, characterized in that: The first impregnation layer and the second impregnation layer are made of an impregnation liquid, and the impregnation liquid includes at least one of acrylic emulsion, styrene-butadiene emulsion, styrene-acrylic emulsion, chloroprene emulsion, and nitrile emulsion.

3. The antistatic paper tape according to claim 1, characterized in that: The adhesive layer is made of an adhesive, and the adhesive is one of a rubber-based pressure-sensitive adhesive and an acrylate-based pressure-sensitive adhesive.

4. The antistatic paper tape according to claim 1, characterized in that: The antistatic layer is made of polythiophene antistatic liquid.

5. The antistatic paper tape according to claim 1, characterized in that: A release layer is provided on the side of the antistatic layer facing away from the substrate.

6. The antistatic paper tape according to claim 5, characterized in that: The release layer is made of a release liquid, and the release liquid includes one of a long-chain alkyl compound, a copolymer or a blend, and an organic silicon release agent.

7. A method for preparing the antistatic paper tape according to any one of claims 1 to 6, characterized in that: The following steps are involved: The substrate is immersed in the impregnation liquid, so that the impregnation liquid fully penetrates into the interior of the substrate, and after heating and drying, a first impregnation layer and a second impregnation layer are formed on opposite sides of the substrate respectively; Coating a polythiophene antistatic liquid on the first impregnation layer, and heating and drying to obtain an antistatic layer; An adhesive is coated on the second impregnation layer, and then heated and dried to obtain an adhesive layer.

8. The method for preparing the antistatic paper tape according to claim 7, characterized in that: In the step of forming a first impregnation layer and a second impregnation layer on opposite sides of the substrate after heating and drying, the heating temperature is 80 to 140° C. and the heating time is 1 to 2 minutes; In the step of obtaining the antistatic layer after heating and drying, the heating temperature is 80 to 140° C. and the heating time is 1 to 2 minutes; In the step of obtaining the adhesive layer after heating and drying, the heating temperature is 60 to 120° C. and the heating time is 1 to 3 minutes.

9. The method for preparing the antistatic paper tape according to claim 7, characterized in that: The preparation method further comprises: A release liquid is coated on the antistatic layer, and the release layer is obtained after heating and drying.

10. The method for preparing the antistatic paper tape according to claim 9, characterized in that: In the step of obtaining the release layer after heating and drying, the heating temperature is 80 to 160° C. and the heating time is 1 to 2 minutes.