CN117567946A - Correction tape core and preparation method thereof - Google Patents
Correction tape core and preparation method thereof Download PDFInfo
- Publication number
- CN117567946A CN117567946A CN202311542284.2A CN202311542284A CN117567946A CN 117567946 A CN117567946 A CN 117567946A CN 202311542284 A CN202311542284 A CN 202311542284A CN 117567946 A CN117567946 A CN 117567946A
- Authority
- CN
- China
- Prior art keywords
- correction tape
- butadiene latex
- rosin
- slurry
- covering layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000012937 correction Methods 0.000 title claims abstract description 51
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 claims abstract description 46
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 claims abstract description 46
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 claims abstract description 46
- 239000004816 latex Substances 0.000 claims abstract description 35
- 229920000126 latex Polymers 0.000 claims abstract description 35
- 239000010410 layer Substances 0.000 claims abstract description 33
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims abstract description 19
- FDYSSWYQRTVFIS-UHFFFAOYSA-N buta-1,3-diene 3-phenylprop-2-enoic acid Chemical compound C=CC=C.C(=O)(O)C=CC1=CC=CC=C1 FDYSSWYQRTVFIS-UHFFFAOYSA-N 0.000 claims abstract description 18
- 230000009477 glass transition Effects 0.000 claims abstract description 9
- 239000002253 acid Substances 0.000 claims abstract description 8
- 239000012790 adhesive layer Substances 0.000 claims abstract description 8
- 239000002994 raw material Substances 0.000 claims abstract description 4
- 239000011248 coating agent Substances 0.000 claims description 30
- 238000000576 coating method Methods 0.000 claims description 30
- 239000002002 slurry Substances 0.000 claims description 27
- 239000002174 Styrene-butadiene Substances 0.000 claims description 17
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 claims description 17
- 239000011115 styrene butadiene Substances 0.000 claims description 17
- 229920003048 styrene butadiene rubber Polymers 0.000 claims description 17
- 238000003756 stirring Methods 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 7
- 239000002904 solvent Substances 0.000 claims description 5
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims description 4
- 239000000049 pigment Substances 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 5
- 230000032683 aging Effects 0.000 description 5
- 239000002989 correction material Substances 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 229920000139 polyethylene terephthalate Polymers 0.000 description 4
- 230000007935 neutral effect Effects 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 235000010215 titanium dioxide Nutrition 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229920002799 BoPET Polymers 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000003679 aging effect Effects 0.000 description 1
- -1 amine salt Chemical class 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000010023 transfer printing Methods 0.000 description 1
- 239000012463 white pigment Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L19/00—Erasers, rubbers, or erasing devices; Holders therefor
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L13/00—Compositions of rubbers containing carboxyl groups
- C08L13/02—Latex
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09F—NATURAL RESINS; FRENCH POLISH; DRYING-OILS; OIL DRYING AGENTS, i.e. SICCATIVES; TURPENTINE
- C09F1/00—Obtaining purification, or chemical modification of natural resins, e.g. oleo-resins
- C09F1/04—Chemical modification, e.g. esterification
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/10—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet
- C09J2301/12—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers
- C09J2301/122—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers the adhesive layer being present only on one side of the carrier, e.g. single-sided adhesive tape
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
- C09J2301/302—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier the adhesive being pressure-sensitive, i.e. tacky at temperatures inferior to 30°C
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- General Chemical & Material Sciences (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention relates to a correction tape core and a preparation method thereof, wherein the tape core comprises a PET release film, a covering layer and an adhesive layer which are sequentially covered on the PET release film, and the preparation raw materials of the covering layer comprise aqueous carboxyl styrene-butadiene latex and modified rosin, wherein the glass transition temperature of the aqueous carboxyl styrene-butadiene latex is less than or equal to 0 ℃, and the modified rosin is prepared by modifying rosin with an acid value of 150-230mg KOH/g by triethanolamine. According to the invention, the aqueous carboxyl styrene-butadiene latex and the modified rosin are added into the covering layer, the glass transition temperature of the aqueous carboxyl styrene-butadiene latex is less than or equal to 0 ℃, the modified rosin is prepared by modifying rosin with an acid value of 150-230mg KOH/g by triethanolamine, the ink is captured into the covering layer after writing, and the aqueous carboxyl styrene-butadiene latex in the covering layer prevents the ink from migrating around, so that the corona-resistant property of the correction tape core is improved.
Description
Technical Field
The invention relates to a correction tape core and a preparation method thereof.
Background
The correction tape is mainly used for correcting writing errors of writing tools which cannot be wiped by using erasers such as ball point pens, liquid pens, neutral pens and the like. The early correction products mainly adopt correction fluid and correction paste, the correction fluid is white pigment dispersion liquid, but the adopted solvent is mainly organic solvent, so that the smell is sharp when the correction fluid is dried, and the correction fluid is adhered to skin and is difficult to clean, so that potential safety hazards exist; the correction patch has the defects that the correction patch needs to be manually stuck, and handwriting with smooth surface is not easy to dry.
The pressure-sensitive transfer printing correction tape has the advantages of correction fluid and correction paste, is popular in the market, and has a main functional component of a correction tape core. The tape core is prepared by sequentially coating covering layer slurry and adhesive layer slurry on a PET film and then drying, wherein the covering layer slurry mainly comprises pigment, resin, dispersion auxiliary agent and solvent, and the covering layer slurry is dried, coated with a layer of acrylic pressure-sensitive adhesive, dried and cut to prepare the correction tape core.
However, the current correction tape covering layer contains a large amount of titanium dioxide powder and calcium carbonate powder, so that a large amount of micropores are formed on the surface of the covering layer, and when writing is performed by using a low-viscosity aqueous straight liquid pen, the phenomenon of thickening (halation) of writing is caused, so that the use is affected.
Disclosure of Invention
The first technical problem to be solved by the invention is to provide a correction tape core with good halation resistance and a preparation method thereof aiming at the current state of the art.
The second technical problem to be solved by the invention is to provide a correction tape core with good ageing resistance, good anti-back adhesion, good cutting property and good writing property and a preparation method thereof.
The technical scheme adopted for solving the technical problems is as follows:
a correction tape core comprises a PET release film, a covering layer and an adhesive layer, wherein the covering layer and the adhesive layer are sequentially covered on the PET release film, the preparation raw materials of the covering layer comprise aqueous carboxyl styrene-butadiene latex and modified rosin, the glass transition temperature of the aqueous carboxyl styrene-butadiene latex is less than or equal to 0 ℃, and the modified rosin is prepared by modifying rosin with an acid value of 150-230mg KOH/g by triethanolamine.
Preferably, the solid content of the aqueous carboxylated styrene-butadiene latex is 45-55%, and the glass transition temperature is less than or equal to 0 ℃. For the aqueous carboxylated styrene-butadiene latex with the solid content of 45-55 percent, when the glass transition temperature is lower than 0 ℃, the prepared covering layer has excellent anti-tack and aging resistance; if the glass transition temperature is higher than 0 ℃, the anti-tack performance is reduced, the risk of anti-tack is caused, and the covering layer has poor aging resistance, namely, the covering layer can be pulverized and cracked after 30 days at the high temperature of 60 ℃.
Preferably, the mass percentage of the aqueous carboxyl styrene-butadiene latex added in the slurry of the covering layer is 10-15%. If the addition amount of the aqueous carboxylated styrene-butadiene latex is less than 10%, the writing performance is poor, and the pen point is easy to block during writing; if the amount of the aqueous carboxylated styrene-butadiene latex added exceeds 15%, the handwriting is not easy to dry and the handwriting is shrunk.
Preferably, the mass ratio of the aqueous carboxylated styrene-butadiene latex to the modified rosin is 1: (0.2-0.5). If the mass ratio of the aqueous carboxylated styrene-butadiene latex to the modified rosin is less than 1:0.2, the prepared correction tape core has poor cutting property, difficult cutting and insufficient halation resistance; if the mass ratio of the aqueous carboxylated styrene-butadiene latex to the modified rosin exceeds 1: and 0.5, the ageing resistance of the prepared correction tape core is poor.
Preferably, the modified rosin is prepared by reacting rosin with an acid value of 150-230mg KOH/g with triethanolamine in water at 58-62 ℃. Preferably, the mass ratio of the rosin to the triethanolamine is 1 (0.3-0.8). If the mass ratio of rosin to triethanolamine is less than 1:0.3, after the modified rosin is added into the covering layer, the correction tape is insufficient in halation resistance, the addition amount of the modified rosin is increased, the halation resistance is improved, but the ageing property is reduced; if the mass ratio of rosin to triethanolamine exceeds 1: when 0.8, the modified rosin is added to the cover layer, and the cutting property of the correction tape is lowered.
It should be further noted that, when styrene-butadiene latex and rosin are used alone, the problem of the handwriting halation is aggravated, but the mechanism of the handwriting halation caused by the styrene-butadiene latex and the rosin is different: rosin can catch ink to cause halation of the ink; the styrene-butadiene latex has insufficient trapping property on the ink, the ink can not permeate into the coating after writing, the drying is slower, and the ink on the coating can slowly flow around to cause the halation of writing. The invention uses the difference of the two halation mechanisms, adopts the aqueous carboxyl styrene-butadiene latex and the modified rosin, and not only eliminates the halation problem of the two, but also realizes the negative and positive halation-resistant effect by coordinating the addition proportion of the two, the glass transition temperature of the aqueous carboxyl styrene-butadiene latex and the modification parameters of the rosin.
The preparation method of the correction tape core comprises the following steps:
(1) Adding a dispersing auxiliary into a solvent, uniformly stirring, adding pigment, and uniformly stirring to obtain slurry a;
(2) Adding the slurry a into a grinder, and grinding for 0.8-2 h at a rotating speed of 1500-2000 rpm to obtain slurry b;
(3) Adding rosin into water, raising the temperature to 58-62 ℃ under stirring, then dropwise adding triethanolamine for reaction, stopping adding the triethanolamine when the solution becomes clear and transparent, lowering the temperature to 22-25 ℃, and filtering residues by using a filter screen to obtain a modified rosin solution;
(4) Adding the modified rosin solution and the carboxyl styrene-butadiene latex into the slurry b, and uniformly stirring to obtain a slurry c;
(5) Adding the slurry c to a correction tape coating machine, coating the slurry c on a PET release film by the correction tape coating machine, and drying to obtain a correction tape covering layer;
(6) And coating pressure-sensitive adhesive on the covering layer as an adhesive layer, drying and cutting into a set size to obtain the correction tape core.
Compared with the prior art, the invention has the advantages that: according to the invention, the aqueous carboxyl styrene-butadiene latex and the modified rosin are added into the covering layer, the glass transition temperature of the aqueous carboxyl styrene-butadiene latex is less than or equal to 0 ℃, the modified rosin is prepared by modifying rosin with an acid value of 150-230mg KOH/g by triethanolamine, the ink is captured into the covering layer after writing, and meanwhile, the aqueous carboxyl styrene-butadiene latex in the covering layer prevents the ink from migrating around, so that the corona-resistant property of the correction tape core is improved; meanwhile, the invention improves the ageing resistance, the anti-back tack, the cutting property and the writing property of the correction tape core by adjusting the addition amount and the modification parameters of the aqueous carboxylic styrene-butadiene latex and the modified rosin.
Detailed Description
The present invention is described in further detail below with reference to examples.
According to the materials and proportions shown in table 1, a correction tape cored coating was prepared according to the following steps:
(1) Adding a dispersing aid (a polyacrylic acid amine dispersing agent) into a solvent (deionized water), uniformly stirring, adding pigment (titanium white), and uniformly stirring to obtain slurry a;
(2) Adding the slurry a into a grinder, and grinding for 1h at a rotation speed of 1800 rpm to obtain slurry b;
(3) Adding rosin into deionized water, slowly stirring while raising the temperature to 60 ℃, then dropwise adding triethanolamine for reaction, stopping adding the triethanolamine when the solution becomes clear and transparent, lowering the temperature to 23 ℃, and filtering residues by using a 200-mesh filter screen to obtain a modified rosin solution;
(4) Adding the rosin solution and the aqueous carboxyl styrene-butadiene latex into the slurry b, and uniformly stirring to obtain a slurry c;
(5) Adding the slurry c to a correction tape coating machine, coating the slurry c on a PET release film by the correction tape coating machine, and drying to obtain a correction tape covering layer;
(6) And coating a layer of pressure-sensitive adhesive on the correction tape covering layer as an adhesive layer, drying and cutting into 5mm roll cores to obtain the correction tape cores.
The raw materials used in each example were derived as follows:
aqueous carboxylated styrene-butadiene latex 1: basf SD332N, tg-19 ℃, solids content 50%
Aqueous carboxylated styrene-butadiene latex 2: jitian F0605, tg 0 ℃, solid content 54.5%
Aqueous carboxylated styrene-butadiene latex 3: aiyulong AL-1002, tg 40 ℃, solid content 48%
Rosin: sea Zhuo Huagong ML-506, acid value 200mgKOH/g
Polyacrylate amine salt dispersant: basf Dispex Cx4240, solids content 40%
Titanium white powder: long Mang R996, rutile type
Triethanolamine: dow, CAS number: 102-71-6
And (5) loading the obtained correction tape core into a correction tape shell to obtain the halation-resistant type transfer pressure printing correction tape. The performance evaluation obtained in each example is shown in Table 2. The detection mode of each performance evaluation is as follows:
1. coating cutting performance
The correction tape was loaded into a coatability tester with the tape direction maintained at 45℃from the paper surface, 600g of pressure was applied, and the tape was applied at a tape speed of 35mm/s in one direction with 5 lines of coverage lengths of 5mm, 15mm, 50mm and 100mm, respectively, on the paper.
Preferably: the coating is smooth in strip discharge, smooth in coating, even in thickness, free of warping, pattern strips and the like; the section is flat and smooth when cutting off;
good: occasionally, the coating is unsmooth, uneven in thickness, warping, pattern and the like; occasionally, the section is uneven during cutting;
the difference is: the coating is not smooth, uneven, tilted, and the like; when cutting, the cutting surface is uneven.
2. Anti-back tack performance
Taking a belt core sample, standing on a table vertically, and unreeling the belt core after applying 50N pressure to the belt core by using a tension meter.
Preferably: the belt core is not reversely adhered;
good: slightly wrinkling the belt core;
the difference is: the tape core is reversely adhered.
3. Writing performance
A black 0.3 and 0.5mm neutral pen is used to apply a pressure of 300g or less to write a permanent character on the surface of the coating.
Preferably: when the ink is coated on handwriting and when the ink is rewritten, the coating is not broken, and the coating and the pen point are not adhered and plugged;
good: when the ink is coated on handwriting and when the ink is rewritten, the coating is not broken, and the coating and the pen point are slightly adhered and plugged;
the difference is: when the ink is coated on handwriting or rewritten, the coating breaks, the handwriting diffuses, and the coating film and the pen point are adhered and plugged.
4. Drying property of writing
The correction tape was coated on A4 paper with a force of 300g, written on the coating with a force a009 0.5mm neutral pen, and after 20s the writing was rubbed with a finger and observed for the writing.
Preferably: the handwriting is clear, no blurring and no ghost are caused;
good: handwriting was slightly blurred and ghost;
the difference is: the writing is not clear, blurred and ghost.
5. Resistance to halation in writing with a water-resistant pen
A0.5 mm straight liquid pen is used for applying pressure which is less than or equal to 300g to write a permanent character on the surface of the coating.
Preferably: the handwriting is not diffused and thickened;
good: the handwriting is not diffused and slightly thickened;
the difference is: the writing is diffused and thickened.
TABLE 1
TABLE 2
Claims (7)
1. The utility model provides a correction tape area core, includes PET release film and covers covering layer, adhesive layer on this PET release film in proper order, its characterized in that: the preparation raw materials of the covering layer comprise aqueous carboxylated styrene-butadiene latex and modified rosin, wherein the glass transition temperature of the aqueous carboxylated styrene-butadiene latex is less than or equal to 0 ℃, and the modified rosin is prepared by modifying rosin with an acid value of 150-230mg KOH/g by triethanolamine.
2. The correction tape core according to claim 1, wherein: the mass percentage of the aqueous carboxyl styrene-butadiene latex added in the slurry of the covering layer is 10-15%.
3. The correction tape core according to claim 1, wherein: the mass ratio of the water-based carboxyl styrene-butadiene latex to the modified rosin is 1: (0.2-0.5).
4. The correction tape core according to claim 1, wherein: the modified rosin is prepared by reacting rosin with an acid value of 150-230mg KOH/g with triethanolamine in water with a temperature of 58-62 ℃.
5. The correction tape core according to claim 4, wherein: the mass ratio of the rosin to the triethanolamine is 1 (0.3-0.8).
6. The correction tape core according to any one of claims 1 to 5, characterized in that: the solid content of the aqueous carboxylated styrene-butadiene latex is 45-55%.
7. The preparation method of the correction tape core is characterized by comprising the following steps:
(1) Adding a dispersing auxiliary into a solvent, uniformly stirring, adding pigment, and uniformly stirring to obtain slurry a;
(2) Adding the slurry a into a grinder, and grinding for 0.8-2 h at a rotating speed of 1500-2000 rpm to obtain slurry b;
(3) Adding rosin into water, raising the temperature to 58-62 ℃ under stirring, then dropwise adding triethanolamine for reaction, stopping adding the triethanolamine when the solution becomes clear and transparent, lowering the temperature to 22-25 ℃, and filtering residues by using a filter screen to obtain a modified rosin solution;
(4) Adding the modified rosin solution and the carboxyl styrene-butadiene latex into the slurry b, and uniformly stirring to obtain a slurry c;
(5) Adding the slurry c to a correction tape coating machine, coating the slurry c on a PET release film by the correction tape coating machine, and drying to obtain a correction tape covering layer;
(6) And coating pressure-sensitive adhesive on the covering layer as an adhesive layer, drying and cutting into a set size to obtain the correction tape core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311542284.2A CN117567946A (en) | 2023-11-20 | 2023-11-20 | Correction tape core and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311542284.2A CN117567946A (en) | 2023-11-20 | 2023-11-20 | Correction tape core and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117567946A true CN117567946A (en) | 2024-02-20 |
Family
ID=89883844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311542284.2A Pending CN117567946A (en) | 2023-11-20 | 2023-11-20 | Correction tape core and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117567946A (en) |
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2023
- 2023-11-20 CN CN202311542284.2A patent/CN117567946A/en active Pending
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