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CN-117567893-B - Soft light belt core for correction belt, preparation method of soft light belt core and correction belt

CN117567893BCN 117567893 BCN117567893 BCN 117567893BCN-117567893-B

Abstract

The invention discloses a soft light belt core for a correction belt, a preparation method thereof and a correction belt containing the soft light belt core, wherein a covering agent layer with glossiness reaching no light is prepared by using titanium dioxide wrapped by silicon dioxide in a formula, meanwhile, the stripping layer with the core uses a frosted PET release film, so that the effects of soft light and eye protection are achieved. In addition, as the light-resistant agent composed of the ultraviolet absorber and the light stabilizer is added in the formula, the light sensitivity of the soft light belt core for the correction belt is reduced, and the service life of the soft light belt core is prolonged.

Inventors

  • YUAN YE
  • ZHANG TONGYAO
  • WANG LIWEI

Assignees

  • 上海晨光文具股份有限公司

Dates

Publication Date
20260508
Application Date
20231116

Claims (8)

  1. 1. The soft light belt core for the correction belt comprises a belt core coating, wherein the belt core coating sequentially comprises a stripping layer, a covering agent layer and a binder layer, and is characterized in that the covering agent layer comprises a low-reflection pigment, the 60-DEG glossiness of the covering agent layer is lower than 30GU, the low-reflection pigment is a porous white pigment formed by wrapping inorganic extinction pigment and titanium dioxide pigment cores through an inorganic adhesive, the low-reflection pigment is subjected to secondary grinding, the particle size of the low-reflection pigment D50 is in a range of 300-500nm, the mass ratio of the inorganic adhesive to the titanium dioxide pigment cores is 30:70-15:85, and the covering agent layer comprises, by weight, 25-35 parts of pigment, 3-5.5 parts of rubber and 1-2 parts of light-resistant agent, wherein the pigment comprises at least 20 parts of the low-reflection pigment.
  2. 2. The soft belt core for a correction belt according to claim 1, wherein the inorganic matting pigment is calcium carbonate particles or silica particles, the inorganic matting pigment has an average particle size of 0.10 to 0.30 μm, and the titanium dioxide pigment core has an average particle size of 0.20 to 0.50 μm.
  3. 3. The correction tape soft core of claim 1, wherein the hiding layer has a 60 ° gloss of less than 10GU.
  4. 4. The soft belt core for correction belt according to claim 1, wherein the light-resistant agent is an ultraviolet absorber and/or a light stabilizer.
  5. 5. The soft belt core for a correction belt according to claim 4, wherein the mass ratio of the ultraviolet absorber to the light stabilizer is 4:8 to 6:8.
  6. 6. A method for producing a soft core for a correction tape, characterized in that the method is used for producing the soft core for a correction tape according to any one of claims 1 to 5, the method comprising: Step (1) preparing initial low-reflection pigment; step (2), dispersing and dissolving rubber in a solvent and heating to more than 80 ℃ to obtain a mixture A; Adding a light-resistant agent, a low-reflection pigment and an auxiliary agent into the mixture A, and uniformly dispersing to obtain a mixture B; Step (4) carrying out secondary grinding on the mixture B to ensure that the particle size of the low-reflection pigment D50 is between 300 and 500nm, thereby obtaining covering agent slurry; Coating the masking agent slurry on a stripping layer, and drying at a high temperature of 80-120 ℃ to obtain a masking agent layer; and (6) uniformly coating the aqueous pressure-sensitive adhesive on the covering agent layer, and drying at a high temperature of 80-120 ℃ to obtain the soft light belt core for the correction belt.
  7. 7. The method of manufacturing a soft belt core for a correction belt according to claim 6, wherein the step (1) is specifically: dispersing titanium dioxide pigment and inorganic extinction pigment in water, and mixing into sodium silicate aqueous solution; heating and stirring the solution prepared in the step (1-1), mixing with sulfuric acid aqueous solution, adjusting pH to 7.0-7.5, and standing; And (1-3) filtering the solution obtained in the step (1-2) and carrying out preliminary grinding on the filtered matters to obtain the initial low-reflection pigment.
  8. 8. A correction tape comprising the soft optical tape core for a correction tape according to any one of claims 1 to 5.

Description

Soft light belt core for correction belt, preparation method of soft light belt core and correction belt Technical Field The invention relates to the technical field of matt coatings, in particular to a soft light belt core for a correction belt, a preparation method thereof and a correction belt containing the soft light belt core, which are mainly used for covering and correcting writing handwriting. Background The correction tape is a white opaque pigment similar to correction liquid, is used for correcting errors in writing of writing tools such as ball pens, neutral pens and pens, and has the advantages of being capable of being applied and written immediately, convenient and quick and the like. Among the existing correction products on the market, the correction tape has become one of the most widely used and full-specification products. Along with the continuous improvement of the economic development degree, the correction tape is used as a novel correction product to be sold to tropical countries such as southeast Asia, africa and the like, and is inevitably contacted with various severe environments in the processes of storage, transportation and terminal display, such as a high-temperature environment during transportation of a centralized box in summer, an exposure environment during terminal display and the like, and various quality hidden hazards and quality complaints are brought to the correction tape product by the environments. None of the correction tape products on the market at hand focus on this problem. On the other hand, with the continuous improvement of eye protection consciousness of consumers, the problem is not focused on the current correction tape products on the market, the general glossiness is in the range from high gloss to flat gloss, and few products can reach matte. The realization of the coating matt effect is a great difficulty for the correction tape product, because the application mode of the correction tape coating is completely opposite to that of a common coating, the correction tape coating is firstly coated on a base material (release film) and then transferred to articles such as paper and the like when in use, the surface of the correction tape coating is naturally high in flatness, the reflection problem is serious, and the problem can be solved only by comprehensively improving the pigment, the formula and the like of the coating. Disclosure of Invention The invention aims to solve the problems and provide a correction tape product which has the advantages of no light, eye protection, good heat resistance and good light resistance. Specifically, in order to achieve the above purpose, the invention provides a soft light belt core for a correction belt, which comprises a belt core coating, wherein the belt core coating sequentially comprises a stripping layer, a covering agent layer and a binder layer, and is characterized in that the covering agent layer comprises a low-reflection pigment, the 60-DEG glossiness of the covering agent layer is lower than 30GU, preferably lower than 25GU, lower than 20GU, lower than 15GU, lower than 10GU or lower than 8GU, and the low-reflection pigment is a porous white pigment formed by wrapping inorganic extinction pigment and a titanium dioxide pigment inner core through an inorganic binder. Further, the inorganic matting pigment is calcium carbonate particles or silica particles, the average particle diameter of the inorganic matting pigment is 0.10 to 0.30. Mu.m, preferably 0.10 to 0.15. Mu.m, 0.15 to 0.20. Mu.m, 0.20 to 0.25. Mu.m, 0.25 to 0.30. Mu.m, or 0.15. Mu.m, and the average particle diameter of the titanium dioxide pigment core is 0.20 to 0.50. Mu.m, preferably 0.20 to 0.30. Mu.m, 0.30 to 0.40. Mu.m, 0.40 to 0.50. Mu.m, or 0.24. Mu.m. Further, the low-reflection pigment is subjected to secondary grinding, and the particle size of the low-reflection pigment D50 is in the range of 300-500 nm. Further, the mass ratio of the inorganic binder to the titanium dioxide pigment core is 30:70-15:85, preferably, 30:70-25:75, 25:75-20:80, 20:80-15:85 or 25:75. Further, the components of the covering agent layer comprise, by weight, 25-35 parts of pigment, 3-5.5 parts of rubber, and 1-2 parts of light-resistant agent, wherein the pigment comprises at least 20 parts of low-reflection pigment, preferably at least 26 parts, at least 28 parts, at least 30 parts, at least 32 parts, or at least 34 parts of low-reflection pigment. Further, the light-resistant agent comprises an ultraviolet absorber and/or a light stabilizer, and the mass ratio of the ultraviolet absorber to the light stabilizer is 4:8-6:8. The invention also provides a correction tape, which comprises the soft light tape core for any correction tape. The invention also provides a preparation method of the soft light belt core for the correction belt, which comprises the following steps of (1) preparing initial low-reflection pigment; step (2), dispersing and dissol