CN112266752A - Low-temperature-resistant hot-melt pressure-sensitive adhesive for removable labels - Google Patents
Low-temperature-resistant hot-melt pressure-sensitive adhesive for removable labels Download PDFInfo
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- CN112266752A CN112266752A CN202011193637.9A CN202011193637A CN112266752A CN 112266752 A CN112266752 A CN 112266752A CN 202011193637 A CN202011193637 A CN 202011193637A CN 112266752 A CN112266752 A CN 112266752A
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- sensitive adhesive
- melt pressure
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Classifications
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- 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
- C09J153/00—Adhesives based on block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Adhesives based on derivatives of such polymers
- C09J153/02—Vinyl aromatic monomers and conjugated dienes
-
- 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
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
-
- 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]
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
-
- 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
Abstract
The invention discloses a low-temperature-resistant hot-melt pressure-sensitive adhesive for a removable label and a preparation method thereof. The pressure-sensitive adhesive comprises the following raw materials in parts by weight: 30-65 parts of elastomer, 25-40 parts of terpene resin, 10-30 parts of petroleum resin, 5-30 parts of naphthenic oil, 0.2-2 parts of titanate acid coupling agent and 0.2-10 parts of antioxidant. The elastomer is SIS D1114: SIS D1113: SIS D1126 ═ 7: 6: 4, the SIS material has 15-30 percent of styrene content and 1-40 percent of di-block content. The pressure-sensitive adhesive is prepared by adhesive preparation and coating. The pressure-sensitive adhesive has good low-temperature adhesion, particularly has better adhesion stability under low temperature and high humidity, and is easy to remove under normal temperature conditions.
Description
Technical Field
The invention relates to the field of high polymer materials, in particular to a low-temperature-resistant hot-melt pressure-sensitive adhesive for a removable label.
Background
The pressure-sensitive adhesive is an adhesive material which has wide application and can be used in the fields of labels, packaging, double-sided tapes, medical treatment and health and the like. It has fast production growth rate and fast pressure sensitive adhesive product producing process. Pressure-sensitive adhesives can be classified into the following types: solvent type, emulsion type, hot melt type, aqueous solution type, and calender type. The most common and most used pressure-sensitive adhesives in the market at the present stage are mainly solvent-type, emulsion-type and hot-melt-type pressure-sensitive adhesives. The hot melt adhesive is produced after emulsion glue and solvent glue, but the speed increasing rate of the hot melt adhesive is far higher than that of the latter two glue in recent years. The reason for the rapid development of the glue is mainly the advantages of the glue and the production process. First, hot melt adhesives are solid at room temperature and are more convenient to store than emulsion adhesives and solvent adhesives. Secondly, the cost is low, which is beneficial to pursuing the maximum product benefit. Thirdly, the adaptability is strong, the production line investment is low, the hot melt adhesive label has large-scale coating equipment aiming at high-speed coating and mass production of large companies, and has equipment with extremely small occupied area aiming at small and medium-sized enterprises, so that the hot melt adhesive label is flexible and variable.
The hot melt pressure sensitive adhesive commonly used for labels also has disadvantages: 1) the label is easy to lose adhesion in a low-temperature environment and easy to warp, and a method for reducing the strength of the hot-melt pressure-sensitive adhesive and improving the adhesion is often adopted to solve the problem, so that the adhesive is easy to remain on an object to be adhered when the label is removed, and poor use experience and pollution are brought; 2) the label is apt to lose its adhesion due to moisture after long-time adhesion due to the influence of a humid environment or moisture migration of the adhered article, and the adhesion stability is poor.
Disclosure of Invention
The invention aims to provide a low-temperature-resistant hot-melt pressure-sensitive adhesive for a removable label. Meanwhile, the invention also provides a preparation method of the low-temperature-resistant removable hot-melt pressure-sensitive adhesive for the label.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a low-temperature-resistant hot-melt pressure-sensitive adhesive for a removable label, which comprises the following raw materials in parts by weight: 30-65 parts of elastomer, 25-40 parts of terpene resin, 10-30 parts of petroleum resin, 5-30 parts of naphthenic oil, 0.2-2 parts of titanate acid coupling agent and 0.2-10 parts of antioxidant. The elastomer is SIS D1114: SIS D1113: SIS D1126 ═ 7: 6: 4, the SIS material has 15-30 percent of styrene content and 1-40 percent of di-block content.
The low-temperature-resistant removable hot-melt pressure-sensitive adhesive for the label is preferably composed of the following raw materials in parts by weight: 30-40 parts of elastomer, 30-40 parts of terpene resin, 15-25 parts of petroleum resin, 5-15 parts of naphthenic oil, 0.5-1.5 parts of titanate acid coupling agent and 1-4 parts of antioxidant. Wherein, the elastomer is SIS D1114: SIS D1113: SIS D1126 ═ 7: 6: 4, the SIS material has 15-30 percent of styrene content and 1-40 percent of di-block content.
The petroleum resin is one or more of C5-C9 petroleum resin.
The titanium acid coupling agent is one or two of monoalkoxy pyrophosphate type or chelating type.
The invention provides a low-temperature-resistant hot-melt pressure-sensitive adhesive for a removable label, which is prepared by the following steps:
1) preparing glue: under the protection of nitrogen, adding the naphthenic oil, the petroleum resin, the terpene resin and the titanate coupling agent in the formula ratio into a reaction kettle, controlling the material temperature at 110-.
2) Coating: pouring the prepared pressure-sensitive adhesive into a glue box of a hot-melt pressure-sensitive adhesive coating machine, wherein the glue box is kept at a constant temperature of 140 ℃, the temperature of a rubber tube is 130 ℃, the coating temperature is 135 ℃, and the glue application amount is 40g/m2。
Compared with the prior art, the invention has the following outstanding advantages and beneficial effects:
1) in the formula, a plurality of SIS elastomers with higher styrene content are selected to be compounded in a specific proportion, and liquid tackifying resin is used, so that the SIS elastomer has good low-temperature adhesive property, is not easy to warp and fall off, still has good cohesive strength at normal temperature, and is easy to remove.
2) Because the SIS and the liquid tackifying resin with higher styrene content are adopted, longer mixing time is needed in the processing process, and the uniform mixing is not easy to influence the adhesive force and the permanent adhesive force of the finished product. The invention adds titanate coupling agent to strengthen the dispersibility in the mixing process, shorten the mixing time, strengthen the uniformity of the adhesive force of the pressure sensitive adhesive and further improve the adhesive stability of the finished product.
3) By selecting the monoalkoxy pyrophosphate type or chelating type titanate acid coupling agent, the problem that the pressure-sensitive adhesive is easy to lose viscosity due to dampness after being pasted for a long time is avoided, and the adhesion stability of the pressure-sensitive adhesive is enhanced.
Detailed Description
In order that the invention may be more readily understood, reference will now be made to the following examples. It is to be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the invention.
Example 1
SIS D111414, SIS D111312, SIS D11268, 401010, terpene resin 34, Wingtack 1020, monoalkoxy pyrophosphate titanate coupling agent 1, antioxidant 1681 and antioxidant 10101.
The preparation steps of the pressure-sensitive adhesive are as follows:
1) preparing glue: under the protection of nitrogen, adding the naphthenic oil, the petroleum resin, the terpene resin and the titanate coupling agent in the formula ratio into a reaction kettle, controlling the material temperature at 120 ℃, stirring at the rotating speed of 120r/min until the materials are molten, adding the elastomer and the antioxidant, heating to 150 ℃, stirring for 2 hours until the materials are transparent, and then continuously stirring for 0.5 hour.
2) Coating: pouring the prepared pressure-sensitive adhesive into a glue box of a hot-melt pressure-sensitive adhesive coating machine, wherein the glue box is kept at a constant temperature of 140 ℃, the temperature of a rubber tube is 130 ℃, the coating temperature is 135 ℃, and the glue application amount is 40g/m2。
Example 2
SIS D111425.2 parts, SIS D111321.6 parts, SIS D112614.4 parts, naphthenic oil 40105 parts, terpene resin 40 parts, petroleum resin Wingtack 1010 parts, monoalkoxy pyrophosphate type titanate coupling agent 2 parts, antioxidant 1680.5 part and antioxidant 10101.5 parts.
The procedure for the preparation of the pressure-sensitive adhesive was the same as in example 1.
Example 3
SIS D111412.6 parts, SIS D111310.8 parts, SIS D11267.2 parts, naphthenic oil 401030 parts, terpene resin 25 parts, petroleum resin Wingtack 1030 parts, chelating type titanate acid coupling agent 0.2 part, antioxidant 1685 part and antioxidant 10105 part.
The procedure for the preparation of the pressure-sensitive adhesive was the same as in example 1.
Example 4
SIS D111416.8 parts, SIS D111314.4 parts, SIS D11269.6 parts, 401020 parts, terpene resin 28 parts, petroleum resin Wingtack 1015 parts, chelating type titanate acid coupling agent 0.5 part, antioxidant 1684 part and antioxidant 10104 part.
The procedure for the preparation of the pressure-sensitive adhesive was the same as in example 1.
Example 5
SIS D111421 parts, SIS D111318 parts, SIS D112612 parts, 401025 parts, terpene resin 38 parts, petroleum resin Wingtack 1025 parts, monoalkoxy pyrophosphate type titanate coupling agent 1.5 parts, antioxidant 1683 parts, and antioxidant 10103 parts.
The procedure for the preparation of the pressure-sensitive adhesive was the same as in example 1.
Comparative example 1
SIS D111414, SIS D111312, SIS D11268, 401010, terpene resin 34, petroleum resin Wingtack 1020, antioxidant 1682 and antioxidant 10101.
The preparation steps of the pressure-sensitive adhesive are as follows:
1) preparing glue: under the protection of nitrogen, adding the naphthenic oil, the petroleum resin and the terpene resin with the formula ratio into a reaction kettle, controlling the material temperature at 120 ℃, stirring at the rotating speed of 120r/min until the materials are molten, then adding the elastomer and the antioxidant, heating to 150 ℃, stirring for 4 hours until the materials are transparent, and then continuously stirring for 0.5 hour.
2) Coating: pouring the prepared pressure-sensitive adhesive into a glue box of a hot-melt pressure-sensitive adhesive coating machine, wherein the glue box is kept at a constant temperature of 140 ℃, the temperature of a rubber tube is 130 ℃, the coating temperature is 135 ℃, and the glue application amount is 40g/m2。
Comparative example 2
SIS D111434 parts, 401010 parts, terpene resin 34 parts, petroleum resin Wingtack 1020 parts, monoalkoxy pyrophosphate type titanate coupling agent 1 part, antioxidant 1681 part and antioxidant 10101 part.
The procedure for the preparation of the pressure-sensitive adhesive was the same as in example 1.
Comparative example 3
SIS D111334, 401010, terpene resin 34, Wingtack 1020, monoalkoxy pyrophosphate titanate coupling agent 1, antioxidant 1681 and antioxidant 10101.
The procedure for the preparation of the pressure-sensitive adhesive was the same as in example 1.
Comparative example 4
SIS D112634 parts, 401010 parts, terpene resin 34 parts, petroleum resin Wingtack 1020 parts, monoalkoxy pyrophosphate type titanate coupling agent 1 part, antioxidant 1681 part and antioxidant 10101 part.
The procedure for the preparation of the pressure-sensitive adhesive was the same as in example 1.
Comparative example 5
SIS D11148, SIS D111314, SIS D112612, 401010, terpene resin 34, petroleum resin Wingtack 1020, monoalkoxy pyrophosphate titanate coupling agent 1, antioxidant 1681 and antioxidant 10101.
The procedure for the preparation of the pressure-sensitive adhesive was the same as in example 1.
Test example 1
The samples obtained in examples 1 to 5 and comparative examples 1 to 5 were tested and evaluated as follows, and the results are shown in Table 1 below.
180 ° peel strength: according to GB/T2792, the method adopts an intelligent electronic tensile testing machine for determination. The ambient temperature is 23 +/-2 ℃ and the relative humidity is 65% +/-5%. The sample width of the SUS304# stainless steel plate was 25mm, and the peeling rate was 300 mm/min. Each sample was measured 3 times and the arithmetic mean was taken.
Low-temperature initial adhesion: according to GB/T4852, the inclined angle is 30 by a slope rolling ball method test. The environmental temperature is minus 20 plus or minus 2 ℃, after the largest steel ball is preselected, 3 samples are taken for rolling ball test. The results are expressed as the median of the steel ball numbers in the 3 test results.
Low temperature high humidity permanent adhesion: measured according to GB/T4851, the ambient temperature is-20 +/-2 ℃, and the relative humidity is 85 +/-5%. The adhered material is SUS304# stainless steel plate. The time at which the sample fell off the stainless steel plate was recorded.
TABLE 1 evaluation results of 180 ℃ peel strength, low-temperature initial adhesion and low-temperature high-humidity permanent adhesion of different samples
The results in Table 1 show that the samples obtained in examples 1 to 5 have lower peel strength at normal temperature and higher initial adhesion at low temperature, and particularly have better permanent adhesion at low temperature and high humidity, compared to those of comparative examples 1 to 5.
Claims (5)
1. The utility model provides a low temperature resistant hot melt pressure sensitive adhesive for removable label which characterized in that: the composition comprises the following raw materials in parts by weight: 30-65 parts of elastomer, 25-40 parts of terpene resin, 10-30 parts of petroleum resin, 5-30 parts of naphthenic oil, 0.2-2 parts of titanate acid coupling agent and 0.2-10 parts of antioxidant. The elastomer is SIS D1114: SIS D1113: SIS D1126 ═ 7: 6: 4, the SIS material has 15-30 percent of styrene content and 1-40 percent of di-block content.
2. The hot melt pressure sensitive adhesive for low temperature resistant removable labels of claim 1, wherein: the composition comprises the following raw materials in parts by weight: 30-40 parts of elastomer, 30-40 parts of terpene resin, 15-25 parts of petroleum resin, 5-15 parts of naphthenic oil, 0.5-1.5 parts of titanate acid coupling agent and 1-4 parts of antioxidant. The elastomer is SIS D1114: SIS D1113: SIS D1126 ═ 7: 6: 4, the SIS material has 15-30 percent of styrene content and 1-40 percent of di-block content.
3. A hot-melt pressure-sensitive adhesive for low temperature resistant removable labels according to claim 1 or 2, characterized in that: the petroleum resin is one or more of C5-C9 petroleum resin.
4. A hot-melt pressure-sensitive adhesive for low temperature resistant removable labels according to claim 1 or 2, characterized in that: the titanium acid coupling agent is one or two of monoalkoxy pyrophosphate type or chelating type.
5. The hot melt pressure sensitive adhesive for low temperature resistant removable labels according to claim 1 or 2, prepared by the steps of:
1) preparing glue: under the protection of nitrogen, adding the naphthenic oil, the petroleum resin, the terpene resin and the titanate coupling agent in the formula ratio into a reaction kettle, controlling the material temperature at 110-.
2) Coating: pouring the prepared pressure-sensitive adhesive into a glue box of a hot-melt pressure-sensitive adhesive coating machine, wherein the glue box is kept at a constant temperature of 140 ℃, the temperature of a rubber tube is 130 ℃, the coating temperature is 135 ℃, and the glue application amount is 40g/m2。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011193637.9A CN112266752A (en) | 2020-10-30 | 2020-10-30 | Low-temperature-resistant hot-melt pressure-sensitive adhesive for removable labels |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011193637.9A CN112266752A (en) | 2020-10-30 | 2020-10-30 | Low-temperature-resistant hot-melt pressure-sensitive adhesive for removable labels |
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| CN112266752A true CN112266752A (en) | 2021-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011193637.9A Pending CN112266752A (en) | 2020-10-30 | 2020-10-30 | Low-temperature-resistant hot-melt pressure-sensitive adhesive for removable labels |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113403009A (en) * | 2021-06-30 | 2021-09-17 | 佛山南宝高盛高新材料有限公司 | Hot-melt pressure-sensitive adhesive for newly retail packaged RFID (radio frequency identification) label and preparation method and application thereof |
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| CN102618194A (en) * | 2012-04-13 | 2012-08-01 | 佛山南宝高盛高新材料有限公司 | Hot melt pressure sensitive adhesive for high speed automatic labeling and preparation method thereof |
| CN107722887A (en) * | 2017-10-18 | 2018-02-23 | 广州市豪特粘接材料有限公司 | A kind of low temperature resistant label PUR and preparation method thereof |
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-
2020
- 2020-10-30 CN CN202011193637.9A patent/CN112266752A/en active Pending
Patent Citations (5)
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|---|---|---|---|---|
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| CN1478134A (en) * | 2000-06-27 | 2004-02-25 | 埃克森美孚化学专利公司 | Adhesives with improved die-cutting performance |
| CN102618194A (en) * | 2012-04-13 | 2012-08-01 | 佛山南宝高盛高新材料有限公司 | Hot melt pressure sensitive adhesive for high speed automatic labeling and preparation method thereof |
| CN108084929A (en) * | 2017-02-08 | 2018-05-29 | 艾利丹尼森公司 | For the limpid hot melt pressure sensitive adhesive to limpid label |
| CN107722887A (en) * | 2017-10-18 | 2018-02-23 | 广州市豪特粘接材料有限公司 | A kind of low temperature resistant label PUR and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113403009A (en) * | 2021-06-30 | 2021-09-17 | 佛山南宝高盛高新材料有限公司 | Hot-melt pressure-sensitive adhesive for newly retail packaged RFID (radio frequency identification) label and preparation method and application thereof |
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Application publication date: 20210126 |