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CN-121976419-A - Preparation method and application of composite coating and touch packaging paper

CN121976419ACN 121976419 ACN121976419 ACN 121976419ACN-121976419-A

Abstract

The invention discloses a composite coating, a preparation method of touch packaging paper and an application thereof, wherein the composite coating comprises a waterproof coating and a touch coating, the waterproof coating comprises, by mass, 30-35 parts of a first film forming resin, 10-15 parts of a first ketone solvent, 40-50 parts of an aromatic hydrocarbon solvent, 4-6 parts of a second ketone solvent and 1-5 parts of a matting agent, and the touch coating comprises, by mass, 30-35 parts of a second film forming resin, 60-65 parts of a dispersing agent, 0.1-5 parts of a modifying agent and 0.1-5 parts of a bactericide, and the waterproof coating and the touch coating are respectively formed by adopting the waterproof coating and the touch coating in the range, so that excellent physical stability and high-end sensory quality are synchronously realized on the premise of ensuring processing feasibility, and the waterproof coating is particularly suitable for packaging scenes in electronic products with strict requirements on flatness, touch and reliability.

Inventors

  • PENG TAO
  • CHEN HUAGUI
  • XIANG YUN
  • YANG QINGYUN

Assignees

  • 深圳正峰印刷有限公司

Dates

Publication Date
20260505
Application Date
20260123

Claims (9)

  1. 1. A composite coating, characterized in that the composite coating comprises a waterproof coating and a tactile coating: The waterproof coating comprises, by mass, 30-35 parts of a first film-forming resin, 10-15 parts of a first ketone solvent, 40-50 parts of an aromatic hydrocarbon solvent, 4-6 parts of a second ketone solvent and 1-5 parts of a matting agent; The touch paint comprises, by mass, 30-35 parts of a second film-forming resin, 60-65 parts of a dispersing agent, 0.1-5 parts of a modifying agent and 0.1-5 parts of a bactericide.
  2. 2. The composite coating according to claim 1, wherein in the composite coating, The waterproof coating comprises, by mass, 30-35 parts of a first film-forming resin, 11-14 parts of a first ketone solvent, 42-48 parts of an aromatic hydrocarbon solvent, 4-6 parts of a second ketone solvent and 2-5 parts of a matting agent; the touch paint comprises, by mass, 31-35 parts of a second film-forming resin, 61-64 parts of a dispersing agent, 1-5 parts of a modifying agent and 1-5 parts of a bactericide.
  3. 3. The composite coating of claim 1, wherein, in the raw materials of the waterproof coating: the first film forming resin includes an aziridine crosslinking agent; The first ketone solvent comprises butanone; The aromatic hydrocarbon solvent comprises toluene; the second ketone solvent comprises cyclohexanone; The matting agent comprises at least one of fumed silica, talc and a low molecular thermoplastic resin.
  4. 4. The composite coating of claim 1, wherein, in the raw materials of the touch-sensitive coating: the second film-forming resin includes a polyurethane resin; The dispersing agent comprises deionized water or ethanol; the modifier comprises polysiloxane or silane coupling agent; the bactericide comprises methyl isothiazolinone.
  5. 5. The composite coating according to claim 1, wherein the mass ratio of the waterproof coating to the touch coating in the composite coating is (3-5): 4-6.
  6. 6. A method of making a touch wrap comprising the steps of: s10 providing a substrate and a composite coating as claimed in any one of claims 1 to 5; s20, mixing the first film-forming resin, the first ketone solvent, the aromatic hydrocarbon solvent, the second ketone solvent and the matting agent to obtain a waterproof coating; s30, mixing the second film-forming resin, the dispersing agent, the modifying agent and the bactericide to obtain a touch paint; S40, coating the waterproof coating on one surface of the base material, and drying to obtain a waterproof coating; s50, coating the touch paint on the waterproof coating to form a touch coating, so as to obtain a crude product; and S60, cooling the crude product, eliminating static electricity, and then rolling to obtain the touch packaging paper.
  7. 7. The method for producing a touch packaging paper according to claim 6, wherein the waterproof coating layer has a thickness of 2 to 5 μm, and the touch coating layer has a thickness of 3 to 6 μm; the drying includes gradient drying.
  8. 8. The method for producing a touch packaging paper according to claim 6, wherein step S50 further comprises applying the touch-sensitive paint to the waterproof coating layer to form a touch-sensitive coating layer, and applying the waterproof coating layer to the other surface of the base material to obtain a crude product, wherein the waterproof coating layer is obtained by mixing a first film-forming resin, a first ketone solvent, an aromatic hydrocarbon solvent, a second ketone solvent, and a matting agent.
  9. 9. A touch packaging paper, characterized in that the touch packaging paper is produced by the production method of the touch packaging paper according to any one of claims 6 to 8.

Description

Preparation method and application of composite coating and touch packaging paper Technical Field The invention relates to the technical field of coatings, in particular to a preparation method and application of a composite coating and touch packaging paper. Background With the rapid development of the electronic product market, the demand for electronic product wrapping films is increasing. However, the conventional tracing paper for the wrapping film of the electronic product has various problems in practical application, such as rough touch, insufficient waterproof and scratch resistance, easy curling and the like, and is easy to wrinkle in a humid environment, and the phenomenon of moisture regain of the paper product is effectively restrained, so that the problem that the market is concerned about insufficient environmental adaptability of the paper wrapping material is greatly eliminated, and the quality and the user experience of the electronic product package are seriously affected. Disclosure of Invention The invention aims to provide a preparation method and application of a composite coating and touch packaging paper, and aims to solve the problems of rough touch, water resistance and insufficient scratch resistance of the conventional composite coating. To achieve the above object, the present invention proposes a composite coating material comprising a waterproof coating material and a touch coating material: The waterproof coating comprises, by mass, 30-35 parts of a first film-forming resin, 10-15 parts of a first ketone solvent, 40-50 parts of an aromatic hydrocarbon solvent, 4-6 parts of a second ketone solvent and 1-5 parts of a matting agent; The touch paint comprises, by mass, 30-35 parts of a second film-forming resin, 60-65 parts of a dispersing agent, 0.1-5 parts of a modifying agent and 0.1-5 parts of a bactericide. In one embodiment, in the composite coating, The waterproof coating comprises, by mass, 30-35 parts of a first film-forming resin, 11-14 parts of a first ketone solvent, 42-48 parts of an aromatic hydrocarbon solvent, 4-6 parts of a second ketone solvent and 2-5 parts of a matting agent; the touch paint comprises, by mass, 31-35 parts of a second film-forming resin, 61-64 parts of a dispersing agent, 1-5 parts of a modifying agent and 1-5 parts of a bactericide. In one embodiment, among the raw materials of the waterproof paint, The first film forming resin includes an aziridine crosslinking agent; The first ketone solvent comprises butanone; The aromatic hydrocarbon solvent comprises toluene; the second ketone solvent comprises cyclohexanone, and The matting agent comprises at least one of fumed silica, talc and a low molecular thermoplastic resin. In one embodiment, the second film-forming resin includes a polyurethane resin; The dispersing agent comprises deionized water or ethanol; the modifier comprises polysiloxane or silane coupling agent; the bactericide comprises methyl isothiazolinone. In one embodiment, in the composite coating, the mass ratio of the waterproof coating to the touch coating is (3-5): 4-6. The invention provides a preparation method of touch packaging paper, which comprises the following steps: s10, providing a substrate and the composite coating as claimed in any one of the above; s20, mixing the first film-forming resin, the first ketone solvent, the aromatic hydrocarbon solvent, the second ketone solvent and the matting agent to obtain a waterproof coating; s30, mixing the second film-forming resin, the dispersing agent, the modifying agent and the bactericide to obtain a touch paint; S40, coating the waterproof coating on one surface of the base material, and drying to obtain a waterproof coating; s50, coating the touch paint on the waterproof coating to form a touch coating, so as to obtain a crude product; and S60, cooling the crude product, eliminating static electricity, and then rolling to obtain the touch packaging paper. In one embodiment, the thickness of the waterproof coating is 2-5 μm; The thickness of the touch sense coating is 3-6 mu m; the drying includes gradient drying. In one embodiment, the step S50 further comprises coating the touch paint on the waterproof coating to form a touch paint, and coating the waterproof coating on the other side of the substrate to obtain a crude product, wherein the waterproof coating is obtained by mixing a first film-forming resin, a first ketone solvent, an aromatic hydrocarbon solvent, a second ketone solvent and a matting agent. The present invention provides a touch wrap made by the method of preparing a composite coating as described in any one of the above. According to the technical scheme, in the waterproof coating provided by the invention, a first film-forming resin is matched with organic solvent systems such as a first ketone solvent, an aromatic hydrocarbon solvent, a second ketone solvent and the like to form a compact, continuous and hydrophobic barrier layer, so that the migra