Transparent adhesive tape and preparation method thereof

Abstract

The invention discloses a transparent adhesive tape and a preparation method thereof, and relates to the technical field of adhesive materials. The anti-yellowing adhesive tape comprises the following components: an adhesive tape base material, an adhesive, a tear-resistant reinforcing layer, a hardening agent and an anti-yellowing agent, the adhesive tape base material is made of a polypropylene film; the adhesive comprises an acrylate polymer, a solvent, a plasticizer and an antioxidant; the tear-resistant reinforcing layer comprises the following components: nitrile rubber and zinc oxide; the solvent is one of cyclohexane or methyl ethyl ketone; and the plasticizer is dioctyl phthalate. Through a series of raw material proportioning and preparation process design, the transparent adhesive tape is higher in flexibility and tear resistance, excellent in physical performance and better in overall performance, and is particularly suitable for being used in the fields of manual manufacturing, packaging and the like.

Description

Technical Field

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

[0002] Transparent tape is a tape product with a transparent adhesive layer. It can connect two separate materials together and keep the color and pattern of the adhered object original for a long time. Transparent tape is not only one of the items people often use in daily life, but also has a wide range of applications in packaging, printing, handicrafts and other fields.

[0003] Although some of the current transparent tapes have the advantages of high transparency and easy tearing, in some fields such as handicrafts and packaging, transparent tapes with higher flexibility and tear resistance are needed, and the performance of transparent tapes still needs to be improved.

[0004] Based on this, a transparent tape and a preparation method thereof are proposed, thereby providing a solution to the above problems. Summary of the invention

[0005] The object of the present invention is to provide a transparent adhesive tape and a preparation method thereof to solve the existing problem: in some fields such as handicraft and packaging, there is a greater need for a transparent adhesive tape with higher flexibility and tear resistance, and the performance of the transparent adhesive tape still needs to be improved.

[0006] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0007] The invention relates to a transparent adhesive tape, comprising the following components: an adhesive tape substrate, an adhesive, an anti-tearing reinforcing layer, a hardener and an anti-yellowing agent.

[0008] Furthermore, the tape substrate is made of polypropylene film.

[0009] Furthermore, the adhesive comprises an acrylic ester polymer, a solvent, a plasticizer and an antioxidant.

[0010] Furthermore, the tear-resistant reinforcement layer comprises the following components: nitrile rubber and zinc oxide.

[0011] Furthermore, the solvent is one of cyclohexane or methyl ethyl ketone.

[0012] Furthermore, the plasticizer is dioctyl phthalate.

[0013] Furthermore, the adhesive comprises the following components in parts by weight: 60-70 parts of acrylate polymer, 20-30 parts of solvent, 5-10 parts of plasticizer, and 1-2 parts of antioxidant.

[0014] A method for preparing a transparent adhesive tape, used for the above-mentioned transparent adhesive tape, comprises the following steps:

[0015] Step 1: Prepare adhesive: Use a mixing and stirring device to mix the hardener, anti-yellowing agent, acrylic polymer, solvent, plasticizer and antioxidant in proportion;

[0016] Step 2: preparing the tear-resistant reinforcement layer: mixing the nitrile rubber and zinc oxide, extruding the mixture through a rubber extruder, and then pressing the mixture into a sheet through a calender;

[0017] Step 3: Use a coating machine to evenly distribute the adhesive on the tape substrate;

[0018] Step 4: Compounding the adhesive tape substrate and the tear-resistant reinforcement layer by a compounding machine;

[0019] Step 5: Put the composite transparent tape into the dryer and control the temperature between 50℃-100℃

[0020] Step 6: Use a winder to wind the dried transparent tape into a roll, and then use a cutter to cut it into the required width.

[0021] The present invention has the following beneficial effects:

[0022] The invention adopts a series of raw material ratios and preparation process designs to make the transparent adhesive tape have higher flexibility and tear resistance, excellent physical properties, better overall performance, and is particularly suitable for use in the fields of handmade and packaging. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention are described clearly and completely below. 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 are within the scope of protection of the present invention.

[0024] Embodiment 1:

[0025] The invention relates to a transparent adhesive tape, comprising the following components: an adhesive tape substrate, an adhesive, an anti-tearing reinforcing layer, a hardener and an anti-yellowing agent.

[0026] The addition of anti-yellowing agent can prevent the tape from turning yellow during long-term use, maintaining its transparency and aesthetics.

[0027] Here, the material of the tape substrate is polypropylene film, and it is noted that the quality of the selected polypropylene film meets the relevant standards. The polypropylene film is used as the tape substrate, thereby ensuring high transparency and high flexibility of the tape substrate.

[0028] In order to further improve the tear resistance and wear resistance of the tape, the tear-resistant reinforcement layer includes the following components: nitrile rubber and zinc oxide. Zinc oxide as an activator can enhance the cross-linking of the rubber and improve the strength.

[0029] In this embodiment, the adhesive includes an acrylic polymer, a solvent, a plasticizer, and an antioxidant. The weight ranges of the components in the adhesive are as follows:

[0030] Acrylate polymer: 60-70 parts, solvent: 20-30 parts, plasticizer: 5-10 parts, antioxidant: 1-2 parts. This makes the adhesive have good adhesion and weather resistance.

[0031] The solvent may be cyclohexane or methyl ethyl ketone, which has good solubility and volatility, can effectively dilute the acrylic polymer, and prevent the adhesive from being oxidized during long-term use, thereby maintaining its stable performance.

[0032] In order to increase the flexibility and ductility of the adhesive, the plasticizer used is dioctyl phthalate.

[0033] This makes the overall performance of the transparent tape better and more suitable for use in fields such as handicrafts and packaging.

[0034] Embodiment 2:

[0035] Based on the above embodiment 1, a method for preparing a transparent tape is disclosed, which specifically includes the following steps:

[0036] Step 1: Prepare the adhesive: First, use a mixing and stirring device to evenly mix the hardener, anti-yellowing agent, acrylic polymer, solvent, plasticizer and antioxidant in proportion to ensure the stable performance of the adhesive.

[0037] Step 2: Prepare the tear-resistant reinforcement layer: Mix the nitrile rubber and zinc oxide, extrude them through a rubber extruder, and then press them into a thin sheet through a calender, and then set them aside for later use.

[0038] Step 3: Then use a coating machine to evenly distribute the adhesive on the tape substrate. During the operation, pay attention to controlling the concentration of the adhesive and the thickness of the coating to avoid excessive concentration or thinness that affects the final performance of the tape.

[0039] Step 4: Compounding the adhesive tape substrate and the tear-resistant reinforcement layer by a compounding machine to form a transparent tape with high flexibility and tear resistance;

[0040] Step 5: Place the composite transparent tape into the dryer. The drying time can be adjusted according to the coating thickness and the glue formula. Be careful to avoid excessive drying time that may cause excessive volatilization or decomposition of the anti-yellowing agent. The drying temperature can be controlled between 50°C and 100°C. In this embodiment, the drying temperature is specifically 56°C, so as to ensure that the adhesive is fully cured without damaging the substrate. In other embodiments, it is necessary to avoid excessively high temperatures that may cause the anti-yellowing agent to fail. The specific temperature can be adjusted according to the characteristics of the anti-yellowing agent and production requirements.

[0041] Step 6: Use a winder to wind the dried transparent tape into a roll, and finally use a cutter to cut it according to the required width to complete the product preparation. In this way, a transparent tape with high flexibility and tear resistance is prepared, and the preparation process is easy to operate and can meet the needs of various application scenarios.

[0042] In order to further ensure that the transparent tape meets the relevant standards and the requirements of actual application scenarios, after production, the flexibility of the transparent tape can be tested by a bending tester. Then use a tear strength tester to test the tear resistance of the transparent tape. And use a viscometer to test the viscosity of the transparent tape. Finally, the prepared transparent tape can be exposed to simulated sunlight or ultraviolet rays for a certain period of time to observe its color change; the tape can also be placed in a high temperature and high humidity environment for a certain period of time to observe its color stability.

[0043] Through the above series of improvements, the present invention makes the scotch tape more flexible and tear-resistant, has excellent physical properties, and has stable and reliable product quality.

[0044] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0045] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A transparent tape, characterized in that: The adhesive tape comprises the following components: a tape substrate, an adhesive, an anti-tear reinforcement layer, a hardener and an anti-yellowing agent.

2. A transparent adhesive tape according to claim 1, characterized in that: The material of the adhesive tape substrate is polypropylene film.

3. A transparent adhesive tape according to claim 1, characterized in that: The adhesive comprises an acrylate polymer, a solvent, a plasticizer and an antioxidant.

4. A transparent adhesive tape according to claim 1, characterized in that: The tear-resistant reinforcement layer comprises the following components: nitrile rubber and zinc oxide.

5. A transparent adhesive tape according to claim 3, characterized in that: The solvent is one of cyclohexane or methyl ethyl ketone.

6. A transparent adhesive tape according to claim 3, characterized in that: The plasticizer is dioctyl phthalate.

7. A transparent adhesive tape according to claim 3, characterized in that: The adhesive comprises the following components in parts by weight: 60-70 parts of acrylate polymer, 20-30 parts of solvent, 5-10 parts of plasticizer, and 1-2 parts of antioxidant.

8. A method for preparing a transparent adhesive tape, used for a transparent adhesive tape according to any one of claims 1 to 7, characterized in that: The following steps are involved: Step 1: Prepare adhesive: Use a mixing and stirring device to mix the hardener, anti-yellowing agent, acrylic polymer, solvent, plasticizer and antioxidant in proportion; Step 2: preparing the tear-resistant reinforcement layer: mixing the nitrile rubber and zinc oxide, extruding the mixture through a rubber extruder, and then pressing the mixture into a sheet through a calender; Step 3: Use a coating machine to evenly distribute the adhesive on the tape substrate; Step 4: Compounding the adhesive tape substrate and the tear-resistant reinforcement layer by a compounding machine; Step 5: Put the composite transparent tape into the dryer and control the temperature between 50℃-100℃; Step 6: Use a winder to wind the dried transparent tape into a roll, and then use a cutter to cut it into the required width.