CN116656248B - Non-backing paper self-adhesive label paper - Google Patents
Non-backing paper self-adhesive label paper Download PDFInfo
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- CN116656248B CN116656248B CN202310683876.XA CN202310683876A CN116656248B CN 116656248 B CN116656248 B CN 116656248B CN 202310683876 A CN202310683876 A CN 202310683876A CN 116656248 B CN116656248 B CN 116656248B
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- silicone oil
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- 239000000853 adhesive Substances 0.000 title claims abstract description 37
- 239000002904 solvent Substances 0.000 claims abstract description 41
- 239000002131 composite material Substances 0.000 claims abstract description 31
- 239000012744 reinforcing agent Substances 0.000 claims abstract description 30
- 239000010410 layer Substances 0.000 claims abstract description 28
- 239000003999 initiator Substances 0.000 claims abstract description 22
- 239000011241 protective layer Substances 0.000 claims abstract description 22
- 239000000178 monomer Substances 0.000 claims abstract description 19
- 239000012790 adhesive layer Substances 0.000 claims abstract description 15
- HECLRDQVFMWTQS-RGOKHQFPSA-N 1755-01-7 Chemical compound C1[C@H]2[C@@H]3CC=C[C@@H]3[C@@H]1C=C2 HECLRDQVFMWTQS-RGOKHQFPSA-N 0.000 claims abstract description 14
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims abstract description 14
- 229920005989 resin Polymers 0.000 claims abstract description 14
- 239000011347 resin Substances 0.000 claims abstract description 14
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 7
- 239000010703 silicon Substances 0.000 claims abstract description 7
- 239000003921 oil Substances 0.000 claims abstract description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 105
- 229920002545 silicone oil Polymers 0.000 claims description 67
- 238000003756 stirring Methods 0.000 claims description 50
- -1 alkenyl succinic anhydride Chemical compound 0.000 claims description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 34
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 33
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims description 29
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 claims description 28
- 238000006243 chemical reaction Methods 0.000 claims description 28
- LIKFHECYJZWXFJ-UHFFFAOYSA-N dimethyldichlorosilane Chemical compound C[Si](C)(Cl)Cl LIKFHECYJZWXFJ-UHFFFAOYSA-N 0.000 claims description 26
- 238000002156 mixing Methods 0.000 claims description 25
- QDCPNGVVOWVKJG-VAWYXSNFSA-N 2-[(e)-dodec-1-enyl]butanedioic acid Chemical compound CCCCCCCCCC\C=C\C(C(O)=O)CC(O)=O QDCPNGVVOWVKJG-VAWYXSNFSA-N 0.000 claims description 22
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 claims description 22
- 150000002148 esters Chemical class 0.000 claims description 21
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 claims description 20
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 20
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 20
- 239000008367 deionised water Substances 0.000 claims description 20
- 229910021641 deionized water Inorganic materials 0.000 claims description 20
- 238000010438 heat treatment Methods 0.000 claims description 20
- 229940014800 succinic anhydride Drugs 0.000 claims description 20
- 239000012295 chemical reaction liquid Substances 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 14
- 238000002360 preparation method Methods 0.000 claims description 14
- SYCHYZZAONZCBB-UHFFFAOYSA-N 2-[2,2-bis(sulfanyl)ethylsulfanyl]ethane-1,1-dithiol Chemical compound SC(S)CSCC(S)S SYCHYZZAONZCBB-UHFFFAOYSA-N 0.000 claims description 13
- WVRNUXJQQFPNMN-VAWYXSNFSA-N 3-[(e)-dodec-1-enyl]oxolane-2,5-dione Chemical compound CCCCCCCCCC\C=C\C1CC(=O)OC1=O WVRNUXJQQFPNMN-VAWYXSNFSA-N 0.000 claims description 12
- 150000001875 compounds Chemical class 0.000 claims description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 10
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 claims description 10
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 10
- ISAOCJYIOMOJEB-UHFFFAOYSA-N benzoin Chemical compound C=1C=CC=CC=1C(O)C(=O)C1=CC=CC=C1 ISAOCJYIOMOJEB-UHFFFAOYSA-N 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 10
- 238000006116 polymerization reaction Methods 0.000 claims description 10
- 238000002390 rotary evaporation Methods 0.000 claims description 10
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 10
- 238000005406 washing Methods 0.000 claims description 10
- 239000011248 coating agent Substances 0.000 claims description 9
- 238000000576 coating method Methods 0.000 claims description 9
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 claims description 9
- WROUWQQRXUBECT-UHFFFAOYSA-M 2-ethylacrylate Chemical compound CCC(=C)C([O-])=O WROUWQQRXUBECT-UHFFFAOYSA-M 0.000 claims description 7
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 claims description 7
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims description 7
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 claims description 7
- SUPCQIBBMFXVTL-UHFFFAOYSA-N ethyl 2-methylprop-2-enoate Chemical compound CCOC(=O)C(C)=C SUPCQIBBMFXVTL-UHFFFAOYSA-N 0.000 claims description 7
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 244000028419 Styrax benzoin Species 0.000 claims description 5
- 235000000126 Styrax benzoin Nutrition 0.000 claims description 5
- 235000008411 Sumatra benzointree Nutrition 0.000 claims description 5
- 229960002130 benzoin Drugs 0.000 claims description 5
- 238000011161 development Methods 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 235000019382 gum benzoic Nutrition 0.000 claims description 5
- 239000005457 ice water Substances 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- 238000004321 preservation Methods 0.000 claims description 5
- 230000004224 protection Effects 0.000 claims description 5
- 150000003839 salts Chemical class 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 5
- 238000001291 vacuum drying Methods 0.000 claims description 5
- 238000005303 weighing Methods 0.000 claims description 5
- 230000001070 adhesive effect Effects 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 5
- 230000018109 developmental process Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 230000032683 aging Effects 0.000 description 3
- 239000002390 adhesive tape Substances 0.000 description 2
- 125000003342 alkenyl group Chemical group 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005886 esterification reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 231100000419 toxicity Toxicity 0.000 description 2
- 230000001988 toxicity Effects 0.000 description 2
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- 230000006750 UV protection Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 125000002843 carboxylic acid group Chemical group 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- VLXBWPOEOIIREY-UHFFFAOYSA-N dimethyl diselenide Natural products C[Se][Se]C VLXBWPOEOIIREY-UHFFFAOYSA-N 0.000 description 1
- WQOXQRCZOLPYPM-UHFFFAOYSA-N dimethyl disulfide Chemical compound CSSC WQOXQRCZOLPYPM-UHFFFAOYSA-N 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 150000002898 organic sulfur compounds Chemical class 0.000 description 1
- 238000007719 peel strength test Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Classifications
-
- 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
- C09J7/21—Paper; Textile fabrics
-
- 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
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
-
- 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
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
-
- 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
- C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
- C09J133/04—Homopolymers or copolymers of esters
- C09J133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C09J133/08—Homopolymers or copolymers of acrylic acid esters
-
- 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
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
- C09J7/38—Pressure-sensitive adhesives [PSA]
- C09J7/381—Pressure-sensitive adhesives [PSA] based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
- C09J7/385—Acrylic polymers
-
- 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
- C09J7/50—Adhesives in the form of films or foils characterised by a primer layer between the carrier and the adhesive
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
- G09F3/02—Forms or constructions
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
- G09F3/08—Fastening or securing by means not forming part of the material of the label itself
- G09F3/10—Fastening or securing by means not forming part of the material of the label itself by an adhesive layer
-
- 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
- C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
- C09J2203/334—Applications of adhesives in processes or use of adhesives in the form of films or foils as a label
-
- 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
-
- 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
- C09J2301/40—Additional features of adhesives in the form of films or foils characterized by the presence of essential components
- C09J2301/408—Additional features of adhesives in the form of films or foils characterized by the presence of essential components additives as essential feature of the adhesive layer
-
- 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
- C09J2429/00—Presence of polyvinyl alcohol
- C09J2429/003—Presence of polyvinyl alcohol in the primer coating
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
- G09F3/02—Forms or constructions
- G09F2003/023—Adhesive
- G09F2003/0241—Repositionable or pressure sensitive adhesive
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
Abstract
The invention relates to the field of label paper, in particular to backing-paper-free self-adhesive label paper, which comprises a silicon oil layer, a first protective layer, a thermosensitive paper layer, a second protective layer and a self-adhesive layer which are sequentially arranged from top to bottom; the adhesive layer comprises the following components in parts by weight: 45-50 parts of acrylate monomer, 8-12 parts of dicyclopentadiene resin, 4.2-8.5 parts of composite reinforcing agent, 0.3-0.6 part of initiator and 40-50 parts of solvent. The invention improves the existing self-adhesive label paper, mainly aims at the self-adhesive part of the label paper, optimizes and improves the components of the self-adhesive, and improves the adhesiveness and weather resistance of the self-adhesive.
Description
Technical Field
The invention relates to the field of label paper, in particular to backing-paper-free self-adhesive label paper.
Background
The self-adhesive label has the advantages of no need of adhesive brushing, no need of paste, no need of dipping water, no pollution, saving of labeling time and the like compared with the traditional label, and has wide application range, convenience and quickness. The self-adhesive label material is a composite material with paper, film or other special material as surface material, adhesive coated on the back and silicon coated protective paper as base paper, and is printed, die cut and other steps to form the label.
The self-adhesive label is one of articles which we often contact in life and is attached to the outer package of the product. The good self-adhesive label can improve the aesthetic degree of the product and can simultaneously give a deep impression to customers. The adhesive labels in the traditional impressions are mostly composed of a surface base material, an adhesive and a base paper, but the adhesive labels also have a base paper-free label which has obvious difference from the labels which we contact at ordinary times.
The label without the base paper has a series of advantages, firstly, the base paper is saved, and when the label is produced, the label can help us save about 30% of raw materials, and meanwhile, the storage and transportation cost of the label is greatly reduced. However, the existing label without the base paper has certain defects, namely the adhesive property of the label without the base paper is insufficient, and the label is easy to fall off in the use process; and the backing-free paper label has poor weather resistance, and the adhesive property is easy to lose effectiveness under the humid environment or strong light irradiation condition.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide backing-paper-free self-adhesive label paper.
The aim of the invention is realized by adopting the following technical scheme:
the non-base paper self-adhesive label paper comprises a silicon oil layer, a first protective layer, a thermosensitive paper layer, a second protective layer and a self-adhesive layer which are sequentially arranged from top to bottom; the heat-sensitive paper layer is formed by coating a layer of heat-sensitive color developing agent on common paper and is used for heat-sensitive color development; the first protective layer and the second protective layer are composed of polyvinyl butyral (PVB) coating.
Preferably, the adhesive layer comprises a pressure-sensitive adhesive, and comprises the following components in parts by weight:
45-50 parts of acrylate monomer, 8-12 parts of dicyclopentadiene resin, 4.2-8.5 parts of composite reinforcing agent, 0.3-0.6 part of initiator and 40-50 parts of solvent.
Preferably, the acrylate monomer comprises ethyl acrylate, butyl acrylate, methyl methacrylate, ethyl methacrylate and 2-ethyl acrylate, wherein the mass ratio of the ethyl acrylate to the butyl acrylate to the methyl methacrylate to the ethyl methacrylate to the 2-ethyl acrylate is 0.6-1:0.8-1.2:1.5-2:1-1.4:3-5.
Preferably, the preparation process of the composite reinforcing agent comprises the following steps: firstly, a dihydroxyl silicone oil compound and dodecenyl succinic anhydride are subjected to esterification reaction to obtain dodecenyl succinic acid silicone oil ester, and then the dodecenyl succinic acid silicone oil ester and dimercaptoethyl sulfide are subjected to click chemical reaction to finally obtain a product.
Preferably, the initiator is an azo-based initiator, including Azobisisobutyronitrile (AIBN) or Azobisisoheptonitrile (ABVN).
Preferably, the solvent is a mixture of ethyl acetate and n-hexane, wherein the mass ratio of the ethyl acetate to the n-hexane is 1.5-2:1.
Preferably, the preparation method of the composite reinforcing agent comprises the following steps:
s1, mixing dihydroxyl silicone oil with deionized water, heating to 30-40 ℃ in a water bath, stirring and dispersing uniformly, and then dropwise adding a sodium hydroxide solution to adjust the pH to 9.0-9.5 to obtain a dihydroxyl silicone oil solution;
wherein the mass ratio of the dihydroxyl silicone oil compound to the deionized water is 1:2-4; the concentration of the sodium hydroxide solution is 0.1mol/L;
s2, mixing dodecenyl succinic anhydride with ethanol, and uniformly dispersing to obtain an alkenyl succinic anhydride solution; dropwise adding alkenyl succinic anhydride solution into dihydroxyl silicone oil solution at the temperature of 30-40 ℃ in water bath, dropwise adding the alkenyl succinic anhydride solution into the dihydroxyl silicone oil solution within one hour, then carrying out heat preservation and stirring reaction for 5-10 hours, dropwise adding hydrochloric acid to adjust the pH of the reaction solution to 7.0-7.5 after the reaction is finished, removing the solvent by rotary evaporation, washing to remove generated salt, and drying to obtain dodecenyl succinic acid silicone oil ester;
wherein the mass ratio of dodecenyl succinic anhydride to ethanol is 1.8-2.4:10, and the mass ratio of the dihydroxyl silicone oil solution to the alkenyl succinic anhydride solution is 2.1-2.5:1;
s3, weighing dimercaptoethyl sulfide and dodecenyl succinic acid silicone oil ester, mixing in tetrahydrofuran, fully stirring, adding a photoinitiator benzoin dimethyl ether (BDK), stirring for reaction for 10-20min under the irradiation of ultraviolet light, removing a solvent by rotary evaporation, washing to remove the initiator and unreacted products, and vacuum drying to obtain the composite reinforcing agent.
Wherein the model of the ultraviolet light equipment is PLS-LAM500, and the mass ratio of the dimercaptoethyl sulfide, the dodecenyl succinic acid silicone oil ester and the tetrahydrofuran is 0.3-0.5:1.4-1.8:5-7.
Preferably, the preparation method of the dihydroxyl silicone oil comprises the following steps:
a. dissolving sodium hydroxide in deionized water to form sodium hydroxide solution; wherein the mass ratio of the sodium hydroxide to the deionized water is 2-3:10;
b. dissolving dichlorodimethylsilane in chloroform to form a dichlorodimethylsilane solution; wherein the mass ratio of the dichlorodimethylsilane to the chloroform is 2.4-3.6:4-6;
c. placing a sodium hydroxide solution in an ice-water bath, stirring for half an hour, then dropwise adding a dichlorodimethylsilane solution, finishing dropwise adding within half an hour, heating to room temperature, stirring for 3-5 hours, and separating and purifying to obtain a dihydroxyl silicone oil compound; wherein the mass ratio of the dichlorodimethylsilane solution to the sodium hydroxide solution is 1.3-1.8:1.
Preferably, the preparation process of the pressure-sensitive adhesive comprises the following steps:
(1) Mixing an acrylic ester monomer with 3/4 parts by weight of a solvent, uniformly stirring under the protection of nitrogen, adding 3/4 parts by weight of an initiator, heating to 75-80 ℃, and stirring for reacting for 2-4 hours;
(2) Mixing the rest 1/4 weight part of initiator with 1/4 weight part of solvent, continuously dripping the mixture into the reaction liquid within two hours, heating to 80-85 ℃ after dripping, stirring and reacting for 3-4 hours, and cooling to 45-50 ℃ to obtain an acrylic ester polymerization reaction liquid;
(3) Sequentially adding a composite reinforcing agent and dicyclopentadiene resin into the acrylic ester polymerization reaction liquid, stirring for 1-2h, cooling to room temperature, decompressing to remove part of solvent, and controlling the solid content to be 50-58% to obtain the required pressure-sensitive adhesive.
The beneficial effects of the invention are as follows:
1. the invention improves the existing self-adhesive label paper, mainly aims at the self-adhesive part of the label paper, optimizes and improves the components of the self-adhesive, and improves the adhesiveness and weather resistance of the self-adhesive.
2. The dodecenyl succinic acid silicone oil ester is synthesized under the condition of esterification reaction by using dodecenyl succinic acid and dihydroxyl silicone oil, and compared with the traditional silane, the dodecenyl succinic acid silicone oil ester has the advantages that the amphipathy is stronger and the surface activity is also stronger at the same time because the dodecenyl succinic acid silicone oil ester contains hydrophilic carboxylic acid groups and hydrophobic long alkenyl chains. Dimercaptoethyl Sulfide (DMDS) is commonly used as a starting material for the synthesis of organosulfur compounds for sizing and leveling agents for dyes. The invention utilizes the mercapto bond at two ends of dimercaptoethyl sulfide to carry out click chemistry reaction with dodecenyl succinic acid silicone oil ester containing long alkenyl chain, and finally the composite reinforcing agent containing thioether bond, silicone oil group and succinic acid ester bond is obtained, so the composite reinforcing agent has better stability and curing speed, and can enhance the bonding performance and weather-proof performance of pressure-sensitive adhesive.
3. According to the invention, the ethyl acetate and the n-hexane which are solvents with lower toxicity are used for replacing the traditional toxic benzene solvents, and the composite reinforcing agent is added for enhancing the bonding capability and the weather resistance of the adhesive, so that the obtained pressure-sensitive adhesive is lower in toxicity, more environment-friendly, stronger in adhesiveness and better in weather resistance.
4. The dihydroxyl silicone oil is obtained by hydrolyzing dichlorodimethylsilane under alkaline condition, the reaction process is mild and pollution-free, and the obtained dihydroxyl silicone oil has rich hydroxyl content and high activity.
Detailed Description
The technical features, objects and advantages of the present invention will be more clearly understood from the following detailed description of the technical aspects of the present invention, but should not be construed as limiting the scope of the invention.
The invention is further described with reference to the following examples.
Example 1
The non-base paper self-adhesive label paper comprises a silicon oil layer, a first protective layer, a thermosensitive paper layer, a second protective layer and a self-adhesive layer which are sequentially arranged from top to bottom; the heat-sensitive paper layer is formed by coating a layer of heat-sensitive color developing agent on common paper and is used for heat-sensitive color development; the first protective layer and the second protective layer are composed of polyvinyl butyral (PVB) coating.
The adhesive layer comprises the following components in parts by weight:
50 parts of acrylate monomer, 10 parts of dicyclopentadiene resin, 6.4 parts of composite reinforcing agent, 0.5 part of Azobisisobutyronitrile (AIBN) and 45 parts of solvent.
The acrylate monomer comprises: the mass ratio of ethyl acrylate, butyl acrylate, methyl methacrylate, ethyl methacrylate and 2-ethyl acrylate is 0.8:1:1.8:1.2:4.
The solvent is a mixture of ethyl acetate and n-hexane, wherein the mass ratio of the ethyl acetate to the n-hexane is 1.8:1.
The preparation method of the composite reinforcing agent comprises the following steps:
s1, preparing dihydroxyl silicone oil:
a. dissolving sodium hydroxide in deionized water to form sodium hydroxide solution; wherein the mass ratio of the sodium hydroxide to the deionized water is 2.5:10;
b. dissolving dichlorodimethylsilane in chloroform to form a dichlorodimethylsilane solution; wherein the mass ratio of dichlorodimethylsilane to chloroform is 3:5;
c. placing a sodium hydroxide solution in an ice-water bath, stirring for half an hour, then dropwise adding a dichlorodimethylsilane solution, finishing dropwise adding within half an hour, heating to room temperature, stirring for 4 hours, and separating and purifying to obtain a dihydroxyl silicone oil compound; wherein the mass ratio of the dichlorodimethylsilane solution to the sodium hydroxide solution is 1.5:1.
S2, mixing the dihydroxyl silicone oil with deionized water, heating to 35 ℃ in a water bath, stirring and dispersing uniformly, and then dropwise adding a sodium hydroxide solution to adjust the pH to 9.0-9.5 to obtain a dihydroxyl silicone oil solution;
wherein the mass ratio of the dihydroxyl silicone oil compound to the deionized water is 1:3; the concentration of the sodium hydroxide solution is 0.1mol/L;
s3, mixing dodecenyl succinic anhydride with ethanol, and uniformly dispersing to obtain alkenyl succinic anhydride solution; dropwise adding alkenyl succinic anhydride solution into dihydroxyl silicone oil solution at 35 ℃ in water bath, dropwise adding the alkenyl succinic anhydride solution into the dihydroxyl silicone oil solution within one hour, then carrying out heat preservation and stirring reaction for 8 hours, dropwise adding hydrochloric acid to adjust the pH of reaction solution to 7.0-7.5 after the reaction is finished, removing solvent by rotary evaporation, removing generated salt by water washing, and drying and dehydrating to obtain dodecenyl succinic acid silicone oil ester;
wherein the mass ratio of dodecenyl succinic anhydride to ethanol is 2.1:10, and the mass ratio of the dihydroxyl silicone oil solution to the alkenyl succinic anhydride solution is 2.3:1;
s4, weighing dimercaptoethyl sulfide and dodecenyl succinic acid silicone oil ester, mixing in tetrahydrofuran, fully stirring, adding a photoinitiator benzoin dimethyl ether (BDK), stirring for reaction for 10-20min under the irradiation of ultraviolet light, removing a solvent by rotary evaporation, washing to remove the initiator and unreacted products, and vacuum drying to obtain the composite reinforcing agent.
Wherein the model of the ultraviolet light equipment is PLS-LAM500, and the mass ratio of dimercaptoethyl sulfide, dodecenyl succinic acid silicone oil ester and tetrahydrofuran is 0.4:1.6:6.
The preparation process of the pressure-sensitive adhesive comprises the following steps:
(1) Mixing an acrylic ester monomer with 3/4 parts by weight of a solvent, uniformly stirring under the protection of nitrogen, adding 3/4 parts by weight of an initiator, heating to 80 ℃, and stirring for reaction for 3 hours;
(2) Mixing the rest 1/4 weight part of initiator with 1/4 weight part of solvent, continuously dripping the mixture into the reaction liquid within two hours, heating to 85 ℃ after dripping, stirring for reaction for 3.5 hours, and cooling to 50 ℃ to obtain an acrylic ester polymerization reaction liquid;
(3) Sequentially adding a composite reinforcing agent and dicyclopentadiene resin into the acrylic ester polymerization reaction liquid, stirring for 1.5h, cooling to room temperature, decompressing to remove part of solvent, and controlling the solid content to be 52% to obtain the required pressure-sensitive adhesive.
Example 2
The non-base paper self-adhesive label paper comprises a silicon oil layer, a first protective layer, a thermosensitive paper layer, a second protective layer and a self-adhesive layer which are sequentially arranged from top to bottom; the heat-sensitive paper layer is formed by coating a layer of heat-sensitive color developing agent on common paper and is used for heat-sensitive color development; the first protective layer and the second protective layer are composed of polyvinyl butyral (PVB) coating.
The adhesive layer comprises the following components in parts by weight:
45 parts of acrylate monomer, 8 parts of dicyclopentadiene resin, 4.2 parts of composite reinforcing agent, 0.3 part of Azobisisoheptonitrile (ABVN) and 40 parts of solvent.
The acrylate monomer comprises: the mass ratio of ethyl acrylate, butyl acrylate, methyl methacrylate, ethyl methacrylate and 2-ethyl acrylate is 0.6:0.8:1.5:1:3.
The solvent is a mixture of ethyl acetate and n-hexane, wherein the mass ratio of the ethyl acetate to the n-hexane is 1.5:1.
The preparation method of the composite reinforcing agent comprises the following steps:
s1, preparing dihydroxyl silicone oil:
a. dissolving sodium hydroxide in deionized water to form sodium hydroxide solution; wherein the mass ratio of the sodium hydroxide to the deionized water is 2:10;
b. dissolving dichlorodimethylsilane in chloroform to form a dichlorodimethylsilane solution; wherein the mass ratio of dichlorodimethylsilane to chloroform is 2.4:4;
c. placing a sodium hydroxide solution in an ice-water bath, stirring for half an hour, then dropwise adding a dichlorodimethylsilane solution, finishing dropwise adding within half an hour, heating to room temperature, stirring for 3 hours, and separating and purifying to obtain a dihydroxyl silicone oil compound; wherein the mass ratio of the dichlorodimethylsilane solution to the sodium hydroxide solution is 1.3:1.
S2, mixing the dihydroxyl silicone oil with deionized water, heating to 30 ℃ in a water bath, stirring and dispersing uniformly, and then dropwise adding a sodium hydroxide solution to adjust the pH to 9.0-9.5 to obtain a dihydroxyl silicone oil solution;
wherein the mass ratio of the dihydroxyl silicone oil compound to the deionized water is 1:2; the concentration of the sodium hydroxide solution is 0.1mol/L;
s3, mixing dodecenyl succinic anhydride with ethanol, and uniformly dispersing to obtain alkenyl succinic anhydride solution; dropwise adding alkenyl succinic anhydride solution into dihydroxyl silicone oil solution at the temperature of 30 ℃ in water bath, dropwise adding the alkenyl succinic anhydride solution into the dihydroxyl silicone oil solution within one hour, then carrying out heat preservation and stirring reaction for 5 hours, dropwise adding hydrochloric acid to adjust the pH of reaction solution to 7.0-7.5 after the reaction is finished, removing solvent by rotary evaporation, removing generated salt by water washing, and drying and dehydrating to obtain dodecenyl succinic acid silicone oil ester;
wherein the mass ratio of dodecenyl succinic anhydride to ethanol is 1.8:10, and the mass ratio of the dihydroxyl silicone oil solution to the alkenyl succinic anhydride solution is 2.1:1;
s4, weighing dimercaptoethyl sulfide and dodecenyl succinic acid silicone oil ester, mixing in tetrahydrofuran, fully stirring, adding a photoinitiator benzoin dimethyl ether (BDK), stirring under the irradiation of ultraviolet light for reaction for 10min, removing a solvent by rotary evaporation, washing to remove the initiator and unreacted products, and vacuum drying to obtain the composite reinforcing agent.
Wherein the model of the ultraviolet light equipment is PLS-LAM500, and the mass ratio of dimercaptoethyl sulfide, dodecenyl succinic acid silicone oil ester and tetrahydrofuran is 0.3:1.4:5.
The preparation process of the pressure-sensitive adhesive comprises the following steps:
(1) Mixing an acrylic ester monomer with 3/4 parts by weight of a solvent, uniformly stirring under the protection of nitrogen, adding 3/4 parts by weight of an initiator, heating to 75 ℃, and stirring for reaction for 2 hours;
(2) Mixing the rest 1/4 weight part of initiator with 1/4 weight part of solvent, continuously dripping the mixture into the reaction liquid within two hours, heating to 80 ℃ after dripping, stirring for reaction for 3-4 hours, and cooling to 45 ℃ to obtain an acrylic ester polymerization reaction liquid;
(3) And sequentially adding a composite reinforcing agent and dicyclopentadiene resin into the acrylic ester polymerization reaction liquid, stirring for 1h, cooling to room temperature, decompressing to remove part of solvent, and controlling the solid content to be 50% to obtain the required pressure-sensitive adhesive.
Example 3
The non-base paper self-adhesive label paper comprises a silicon oil layer, a first protective layer, a thermosensitive paper layer, a second protective layer and a self-adhesive layer which are sequentially arranged from top to bottom; the heat-sensitive paper layer is formed by coating a layer of heat-sensitive color developing agent on common paper and is used for heat-sensitive color development; the first protective layer and the second protective layer are composed of polyvinyl butyral (PVB) coating.
The adhesive layer comprises the following components in parts by weight:
50 parts of acrylate monomer, 12 parts of dicyclopentadiene resin, 8.5 parts of composite reinforcing agent, 0.6 part of Azobisisobutyronitrile (AIBN) and 50 parts of solvent.
The acrylate monomer comprises: the mass ratio of ethyl acrylate, butyl acrylate, methyl methacrylate, ethyl methacrylate and 2-ethyl acrylate is 1:1.2:2:1.4:5.
The solvent is a mixture of ethyl acetate and n-hexane, wherein the mass ratio of the ethyl acetate to the n-hexane is 2:1.
The preparation method of the composite reinforcing agent comprises the following steps:
s1, preparing dihydroxyl silicone oil:
a. dissolving sodium hydroxide in deionized water to form sodium hydroxide solution; wherein the mass ratio of the sodium hydroxide to the deionized water is 3:10;
b. dissolving dichlorodimethylsilane in chloroform to form a dichlorodimethylsilane solution; wherein the mass ratio of dichlorodimethylsilane to chloroform is 3.6:6;
c. placing a sodium hydroxide solution in an ice-water bath, stirring for half an hour, then dropwise adding a dichlorodimethylsilane solution, finishing dropwise adding within half an hour, heating to room temperature, stirring for 3-5 hours, and separating and purifying to obtain a dihydroxyl silicone oil compound; wherein the mass ratio of the dichlorodimethylsilane solution to the sodium hydroxide solution is 1.8:1.
S2, mixing the dihydroxyl silicone oil with deionized water, heating to 40 ℃ in a water bath, stirring and dispersing uniformly, and then dropwise adding a sodium hydroxide solution to adjust the pH to 9.0-9.5 to obtain a dihydroxyl silicone oil solution;
wherein the mass ratio of the dihydroxyl silicone oil compound to the deionized water is 1:4; the concentration of the sodium hydroxide solution is 0.1mol/L;
s3, mixing dodecenyl succinic anhydride with ethanol, and uniformly dispersing to obtain alkenyl succinic anhydride solution; dropwise adding alkenyl succinic anhydride solution into dihydroxyl silicone oil solution at the temperature of 40 ℃ in water bath, dropwise adding the alkenyl succinic anhydride solution into the dihydroxyl silicone oil solution within one hour, then carrying out heat preservation and stirring reaction for 10 hours, dropwise adding hydrochloric acid to adjust the pH of reaction solution to 7.0-7.5 after the reaction is finished, removing solvent by rotary evaporation, removing generated salt by water washing, and drying and dehydrating to obtain dodecenyl succinic acid silicone oil ester;
wherein the mass ratio of dodecenyl succinic anhydride to ethanol is 2.4:10, and the mass ratio of the dihydroxyl silicone oil solution to the alkenyl succinic anhydride solution is 2.5:1;
s4, weighing dimercaptoethyl sulfide and dodecenyl succinic acid silicone oil ester, mixing in tetrahydrofuran, fully stirring, adding a photoinitiator benzoin dimethyl ether (BDK), stirring under the irradiation of ultraviolet light for reacting for 20min, removing a solvent by rotary evaporation, washing to remove the initiator and unreacted products, and vacuum drying to obtain the composite reinforcing agent.
Wherein the model of the ultraviolet light equipment is PLS-LAM500, and the mass ratio of dimercaptoethyl sulfide, dodecenyl succinic acid silicone oil ester and tetrahydrofuran is 0.5:1.8:7.
The preparation process of the pressure-sensitive adhesive comprises the following steps:
(1) Mixing an acrylic ester monomer with 3/4 parts by weight of a solvent, uniformly stirring under the protection of nitrogen, adding 3/4 parts by weight of an initiator, heating to 80 ℃, and stirring for reaction for 4 hours;
(2) Mixing the rest 1/4 weight part of initiator with 1/4 weight part of solvent, continuously dripping the mixture into the reaction liquid within two hours, heating to 85 ℃ after dripping, stirring for reaction for 4 hours, and cooling to 50 ℃ to obtain an acrylic ester polymerization reaction liquid;
(3) And sequentially adding a composite reinforcing agent and dicyclopentadiene resin into the acrylic ester polymerization reaction liquid, stirring for 2 hours, cooling to room temperature, decompressing to remove part of solvent, and controlling the solid content to be 58% to obtain the required pressure-sensitive adhesive.
Comparative example 1
The backing-free pressure-sensitive adhesive label paper is different from example 1 in that the pressure-sensitive adhesive of the pressure-sensitive adhesive layer is different in composition.
The pressure-sensitive adhesive of the self-adhesive layer comprises the following components in parts by weight:
50 parts of acrylate monomer, 10 parts of dicyclopentadiene resin, 0.5 part of Azobisisobutyronitrile (AIBN) and 45 parts of solvent.
The pressure sensitive adhesive of this comparative example was free of added composite reinforcing agent.
Comparative example 2
The backing-free pressure-sensitive adhesive label paper is different from example 1 in that the pressure-sensitive adhesive of the pressure-sensitive adhesive layer is different in composition.
The pressure-sensitive adhesive of the self-adhesive layer comprises the following components in parts by weight:
50 parts of acrylate monomer, 10 parts of dicyclopentadiene resin, 6.4 parts of composite reinforcing agent, 0.5 part of Azobisisobutyronitrile (AIBN) and 45 parts of solvent.
The composite reinforcing agent is dihydroxyl silicone oil, and the preparation process is the same as that of the embodiment 1.
Comparative example 3
The backing-free pressure-sensitive adhesive label paper is different from example 1 in that the pressure-sensitive adhesive of the pressure-sensitive adhesive layer is different in composition.
The pressure-sensitive adhesive of the self-adhesive layer comprises the following components in parts by weight:
50 parts of acrylate monomer, 10 parts of dicyclopentadiene resin, 6.4 parts of composite reinforcing agent, 0.5 part of Azobisisobutyronitrile (AIBN) and 45 parts of solvent.
The composite reinforcing agent is dodecenyl succinic anhydride.
Experimental detection
The pressure-sensitive adhesive layers (thickness: 50 μm) obtained in example 1 and comparative examples 1 to 3 were subjected to corresponding performance tests, and the test results are shown in Table 1.
The peel strength test in Table 1 refers to GB/T2792-2014 test method for peel strength of adhesive tape, the continuous tack test refers to GB/T4851-2014 test method for holding tack of adhesive tape, the heat aging is aging treatment at 120deg.C for 24h, and the ultraviolet aging is irradiation with 365nm ultraviolet lamp for 24h.
Table 1 performance of pressure sensitive adhesive layers obtained by different methods
As can be seen from the data in table 1, the pressure-sensitive adhesive layer of the self-adhesive label paper of example 1 was higher in not only peel strength but also performance of holding power, weather resistance (including heat resistance and ultraviolet resistance) was better.
Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention.
Claims (9)
1. The backing-paper-free self-adhesive label paper is characterized by comprising a silicon oil layer, a first protective layer, a thermosensitive paper layer, a second protective layer and a self-adhesive layer which are sequentially arranged from top to bottom; the adhesive layer comprises the following components in parts by weight:
45-50 parts of acrylate monomer, 8-12 parts of dicyclopentadiene resin, 4.2-8.5 parts of composite reinforcing agent, 0.3-0.6 part of initiator and 40-50 parts of solvent;
the preparation method of the composite reinforcing agent comprises the following steps:
s1, mixing dihydroxyl silicone oil with deionized water, heating to 30-40 ℃ in a water bath, stirring and dispersing uniformly, and then dropwise adding a sodium hydroxide solution to adjust the pH to 9.0-9.5 to obtain a dihydroxyl silicone oil solution;
s2, mixing dodecenyl succinic anhydride with ethanol, and uniformly dispersing to obtain an alkenyl succinic anhydride solution; dropwise adding alkenyl succinic anhydride solution into dihydroxyl silicone oil solution at the temperature of 30-40 ℃ in water bath, dropwise adding the alkenyl succinic anhydride solution into the dihydroxyl silicone oil solution within one hour, then carrying out heat preservation and stirring reaction for 5-10 hours, dropwise adding hydrochloric acid to adjust the pH of the reaction solution to 7.0-7.5 after the reaction is finished, removing the solvent by rotary evaporation, washing to remove generated salt, and drying to obtain dodecenyl succinic acid silicone oil ester;
s3, weighing dimercaptoethyl sulfide and dodecenyl succinic acid silicone oil ester, mixing in tetrahydrofuran, fully stirring, adding a photoinitiator benzoin dimethyl ether (BDK), stirring for reaction for 10-20min under the irradiation of ultraviolet light, removing a solvent by rotary evaporation, washing to remove the initiator and unreacted products, and vacuum drying to obtain the composite reinforcing agent.
2. The backing-free self-adhesive label paper according to claim 1, wherein the thermosensitive paper layer is a layer of thermosensitive color developing agent coated on plain paper for thermosensitive color development.
3. The backing-free self-adhesive label paper of claim 1 wherein the composition of the first protective layer and the second protective layer is a polyvinyl butyral coating.
4. The backing-free self-adhesive label paper according to claim 1, wherein the acrylate monomer comprises ethyl acrylate, butyl acrylate, methyl methacrylate, ethyl methacrylate and 2-ethyl acrylate, and the mass ratio of the ethyl acrylate, butyl acrylate, methyl methacrylate, ethyl methacrylate and 2-ethyl acrylate is 0.6-1:0.8-1.2:1.5-2:1-1.4:3-5.
5. The backing-free self-adhesive label paper according to claim 1, wherein the initiator is azo initiator, including Azobisisobutyronitrile (AIBN) or Azobisisoheptonitrile (ABVN).
6. The backing-free self-adhesive label paper according to claim 1, wherein the solvent is a mixture of ethyl acetate and n-hexane, and the mass ratio of the ethyl acetate to the n-hexane is 1.5-2:1.
7. The backing-free self-adhesive label paper according to claim 1, wherein the preparation method of the dihydroxyl silicone oil comprises the following steps:
a. dissolving sodium hydroxide in deionized water to form sodium hydroxide solution; wherein the mass ratio of the sodium hydroxide to the deionized water is 2-3:10;
b. dissolving dichlorodimethylsilane in chloroform to form a dichlorodimethylsilane solution; wherein the mass ratio of the dichlorodimethylsilane to the chloroform is 2.4-3.6:4-6;
c. placing a sodium hydroxide solution in an ice-water bath, stirring for half an hour, then dropwise adding a dichlorodimethylsilane solution, finishing dropwise adding within half an hour, heating to room temperature, stirring for 3-5 hours, and separating and purifying to obtain a dihydroxyl silicone oil compound; wherein the mass ratio of the dichlorodimethylsilane solution to the sodium hydroxide solution is 1.3-1.8:1.
8. The backing-free self-adhesive label paper according to claim 7, wherein in S1, the mass ratio of the dihydroxyl silicone oil compound to deionized water is 1:2-4; the concentration of the sodium hydroxide solution is 0.1mol/L;
in S2, the mass ratio of dodecenyl succinic anhydride to ethanol is 1.8-2.4:10, and the mass ratio of the dihydroxyl silicone oil solution to the alkenyl succinic anhydride solution is 2.1-2.5:1;
in S3, the model of the ultraviolet light equipment is PLS-LAM500, and the mass ratio of the dimercaptoethyl sulfide, the dodecenyl succinic acid silicone oil ester and the tetrahydrofuran is 0.3-0.5:1.4-1.8:5-7.
9. The backing-free self-adhesive label paper according to claim 1, wherein the preparation process of the pressure-sensitive adhesive comprises the following steps:
(1) Mixing an acrylic ester monomer with 3/4 parts by weight of a solvent, uniformly stirring under the protection of nitrogen, adding 3/4 parts by weight of an initiator, heating to 75-80 ℃, and stirring for reacting for 2-4 hours;
(2) Mixing the rest 1/4 weight part of initiator with 1/4 weight part of solvent, continuously dripping the mixture into the reaction liquid within two hours, heating to 80-85 ℃ after dripping, stirring and reacting for 3-4 hours, and cooling to 45-50 ℃ to obtain an acrylic ester polymerization reaction liquid;
(3) Sequentially adding a composite reinforcing agent and dicyclopentadiene resin into the acrylic ester polymerization reaction liquid, stirring for 1-2h, cooling to room temperature, decompressing to remove part of solvent, and controlling the solid content to be 50-58% to obtain the required pressure-sensitive adhesive.
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