CN114940872A - Adhesive label and preparation method thereof - Google Patents
Adhesive label and preparation method thereof Download PDFInfo
- Publication number
- CN114940872A CN114940872A CN202210470690.1A CN202210470690A CN114940872A CN 114940872 A CN114940872 A CN 114940872A CN 202210470690 A CN202210470690 A CN 202210470690A CN 114940872 A CN114940872 A CN 114940872A
- Authority
- CN
- China
- Prior art keywords
- parts
- self
- adhesive label
- thermoplastic elastomer
- 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
Images
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
- 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
- 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
- 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
- C09J157/00—Adhesives based on unspecified polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C09J157/02—Copolymers of mineral oil hydrocarbons
-
- 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
- C09J7/35—Heat-activated
-
- 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
- C09J7/40—Adhesives in the form of films or foils characterised by release liners
- C09J7/401—Adhesives in the form of films or foils characterised by release liners characterised by the release coating composition
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/04—Thermoplastic elastomer
-
- 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
- C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
- C09J2203/338—Applications of adhesives in processes or use of adhesives in the form of films or foils as tamper-evident tape or 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
- C09J2301/304—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 heat-activatable, i.e. not 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
- C09J2400/00—Presence of inorganic and organic materials
- C09J2400/20—Presence of organic materials
- C09J2400/28—Presence of paper
- C09J2400/283—Presence of paper in the substrate
-
- 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
- C09J2483/00—Presence of polysiloxane
- C09J2483/005—Presence of polysiloxane in the release coating
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention discloses a self-adhesive label and a preparation method thereof, wherein the self-adhesive label comprises the following components in sequence: a surface layer; the hot melt adhesive layer comprises the following raw materials in parts by weight: 15-60 parts of thermoplastic elastomer, 30-70 parts of tackifying resin, 10-30 parts of plasticizer and 0.3-1.2 parts of antioxidant; a silicon oil layer; and (7) a base paper layer. The method has the following beneficial effects: the self-adhesive label prepared by the method has the advantages of good initial adhesion, high peel strength and good adhesive holding capacity, has excellent die cutting performance, can be used for high-speed coating in the preparation process, has good fluidity, and can meet the coating speed of 450 m/min.
Description
Technical Field
The invention relates to the technical field of pressure-sensitive adhesives, in particular to a self-adhesive label and a preparation method thereof.
Background
The existing hot-melt pressure-sensitive adhesive has the characteristics of high solid content and low VOC (volatile organic compound), is widely applied to the fields of labels, packaging, medical treatment and sanitation, non-setting adhesive and the like, and has the characteristics of low cost and environmental friendliness, so that the existing hot-melt pressure-sensitive adhesive can effectively replace the traditional solvent-type pressure-sensitive adhesive and part of emulsion-type pressure-sensitive adhesive. Along with the increasing perfection of the field of electronic commerce, the commercial label is more and more in demand, and the requirements on the coating speed and the die cutting processability of the hot-melt pressure-sensitive adhesive are increased.
Patent CN201610613117.6 provides a cold-stored hot melt adhesive composition for label, and when the label is pasted, unit coating weight is few, and production efficiency is high, and the laminating performance is excellent, and colloid cohesive strength is big, and it is excellent to resist the oil permeability, and weatherability is good, and it includes following component: 15-25% by weight of a first thermoplastic rubber, and a second thermoplastic rubber: 10-15% (weight percentage), plasticizer: 15-25% (weight percent), first tackifying resin: 20-30 percent (weight percentage), 20-30 percent (weight percentage) of second tackifying resin and 1.0 percent (weight percentage) of antioxidant, and the invention also provides a preparation method of the hot melt adhesive composition for the refrigerated label.
However, in the prior art, the coating speed and the die cutting processing performance of the pressure-sensitive adhesive in the coating process are higher and higher, and if the cohesive strength of the colloid formula is high, particularly the commercially available hot-melt pressure-sensitive adhesive for the high-viscosity label needs to ensure good initial viscosity and permanent viscosity, the problem of high melt viscosity of the glue exists, and the coating speed cannot be increased finally. Moreover, with the improvement of the technology of coating equipment and die cutting waste discharge equipment, the running vehicle speed is higher and higher, in addition, the application range of hot glue labels is wider and wider, the original commercial glue is difficult to meet the comprehensive requirements in the aspects of high-speed coating, high-speed die cutting waste discharge and labeling, and especially in the running vehicle speed, the defects of thick and thin material lines, coating omission points or lines and the like can be generated when the conventional commercial glue exceeds the limited vehicle speed of 360m/min, so that the further improvement of the running efficiency is limited.
In conclusion, the invention provides the self-adhesive label and the preparation method thereof, the self-adhesive label has the advantages of good initial adhesion, high peel strength and good adhesive holding capacity, wherein the high-speed coating hot-melt pressure-sensitive adhesive is simple to prepare and good in fluidity, and can meet the coating speed of 450 m/min.
Disclosure of Invention
The self-adhesive label prepared by the method has the advantages of good initial adhesion, high peel strength and good adhesive holding capacity, has excellent die cutting performance, and can be coated at high speed in the preparation process.
In order to achieve the purpose, the invention is realized by the following technical scheme:
the adhesive sticker label comprises the following components in sequence:
a face layer 1;
the hot melt adhesive layer 2 comprises the following raw materials in parts by weight: 15-60 parts of thermoplastic elastomer, 30-70 parts of tackifying resin, 10-30 parts of plasticizer and 0.3-1.2 parts of antioxidant;
a silicon oil layer 3;
a base paper layer 4.
As a further improvement, the surface layer 1 is selected from any one of coated paper, thermal paper and synthetic paper.
As a further improvement, the silicon oil layer 3 is prepared by coating solvent-free silicon oil and then performing heat curing, the silicon coating quantity is 1g per square meter, wherein the solvent-free silicon oil comprises the following components in parts by weight:
100 parts of vinyl-containing silicone oil;
4-8 parts of silicone oil containing Si-H groups;
9.5 parts of platinum catalyst.
As a further improvement, the bottom paper layer 4 is made of glassine material, and the gram weight of the bottom paper layer is 50-60 g per square meter.
As a further improvement, the thermoplastic elastomer in the hot melt adhesive layer 2 is selected from one or a mixture of more of SIS, SBS, SEBS and SEPS; the molecular structure of the thermoplastic elastomer can be any one or two of star-shaped structure and linear structure; the melt flow rate of the thermoplastic elastomer is 10-30 g/10 min; the diblock fraction of the thermoplastic elastomer is 20-30%, and the block ratio is 20/80-30/70; the tackifying resin is one or a mixture of more of terpene resin, petroleum resin (C5, C9, C5/C9 copolymerization), coumarone resin, rosin resin and modification or derivative thereof.
As a further improvement, the plasticizer is any one or a mixture of more of naphthenic oil KN-4010, paraffin oil, white oil, phthalate esters and low molecular weight polytetramethylene glycol; the antioxidant is a mixture of pentaerythritol tetrakis (3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate) and tris (2, 4-di-tert-butylphenyl) phosphite, and the weight ratio of pentaerythritol tetrakis (3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate) to tris (2, 4-di-tert-butylphenyl) phosphite is 2: 1.
A method for preparing a self-adhesive label comprises the following preparation steps:
s1 preparation of Hot melt adhesive
1) Weighing the components according to the proportion, wherein the solution polymerization type styrene butadiene rubber is crushed for standby;
2) putting the weighed plasticizer into a reaction kettle, stirring and heating the plasticizer to 120-130 ℃, and adding an antioxidant into the plasticizer;
3) after stirring for 10 minutes until no significant antioxidant particles were present in the kettle, the thermoplastic elastomer was slowly added. Controlling the temperature in the reaction kettle to be 145-155 ℃, vacuumizing to the vacuum degree of 0.085MPa, and continuously stirring until the thermoplastic elastomer is a uniform mixture;
4) adding tackifying resin into the reaction kettle, controlling the temperature in the reaction kettle to be 145-155 ℃, vacuumizing to the vacuum degree of 0.085MPa, increasing the stirring speed, stirring until the glue becomes a uniform transparent mixture, and finally discharging the glue.
Preparation of S2 self-adhesive label
And (3) after the glue in the S1 is prepared, injecting the glue into coating equipment, coating the glue on release paper cured by the coated silicone oil layer in a slit mode, compounding the glue with the surface layer 1, and rolling to obtain a label material, namely the self-adhesive label.
The self-adhesive label has the following beneficial effects:
the self-adhesive label prepared by the method has the advantages of good initial adhesion, high peel strength and good adhesive holding capacity, has excellent die cutting performance, and can be coated at high speed in the preparation process;
the hot-melt pressure-sensitive adhesive in the self-adhesive label not only improves the fluidity of the hot-melt pressure-sensitive adhesive, reduces the viscosity of the hot-melt pressure-sensitive adhesive, but also maintains good cohesive strength and obtains good high-speed coating performance by changing the types and the proportions of different thermoplastic elastomers;
the solution-polymerized styrene butadiene rubber block type thermoplastic elastomer in the hot-melt pressure-sensitive adhesive has the characteristics of good weather resistance, good rebound resilience and the like, and can reduce the viscosity of the formula and the modulus of the adhesive when added into the formula, and improve the fluidity at high temperature and the wettability on different substrates;
the hot-melt pressure-sensitive adhesive provided by the invention has the advantages that the rubber provides an adhesive main body frame, the adhesive provides the basis of final viscosity, weather resistance and mechanical property, and the tackifying resin is the other most important component in the pressure-sensitive adhesive except the main body elastomer. Softening agent: the modulus of the formula is reduced, the fluidity and the wettability of the glue are improved, and the antioxidant is as follows: the rubber and the resin are protected, thermal oxidation is prevented at high temperature, and finally all components are in synergistic effect, so that the hot-melt pressure-sensitive adhesive disclosed by the invention has good fluidity and can meet the requirement of coating speed of 450 m/min.
Drawings
FIG. 1 is a schematic view of the structure of the self-adhesive label of the present invention;
description of the reference numerals:
1-surface layer; 2-hot melt adhesive layer; 3-a silicon oil layer; 4-base paper layer.
Detailed Description
In order to make the purpose, technical scheme and advantages of the invention clearer, the invention is further described with reference to embodiments 1 to 3 as follows:
the preparation method of the self-adhesive label comprises the following preparation steps:
s1 preparation of Hot melt adhesive
1) Weighing the components according to the proportion, wherein the solution polymerization type styrene butadiene rubber is crushed for standby;
2) putting the weighed plasticizer into a reaction kettle, stirring and heating the plasticizer to 120-130 ℃, and adding an antioxidant into the plasticizer;
3) after stirring for 10 minutes until no significant antioxidant particles were present in the kettle, the thermoplastic elastomer was slowly added. Controlling the temperature in the reaction kettle to be 145-155 ℃, vacuumizing to the vacuum degree of 0.085MPa, and continuously stirring until the thermoplastic elastomer is a uniform mixture;
4) adding tackifying resin into the reaction kettle, controlling the temperature in the reaction kettle to 145-155 ℃, vacuumizing to 0.085MPa of vacuum, increasing the stirring speed, stirring until the glue becomes a uniform transparent mixture, and finally discharging the glue.
Preparation of S2 self-adhesive label
The glue in S1 is prepared, injected into coating equipment, coated on release paper solidified by coating silicon oil layer in slit type, then compounded with surface layer 1, and rolled to obtain the label material, i.e. the self-adhesive label
Example 1
The hot-melt pressure-sensitive adhesive in the embodiment comprises the following components in parts by weight: 30 parts of thermoplastic elastomer, 120 parts of tackifying resin, 220 parts of tackifying resin, 310 parts of tackifying resin, 19 parts of plasticizer and 1 part of antioxidant.
The thermoplastic elastomer in this example is SIS, where the thermoplastic elastomer has a melt flow index of 17g/10min, a diblock fraction of 15%, and a block ratio of 28/72;
the tackifying resin 1 of the present example is a C5 petroleum resin, wherein the softening point of the C5 petroleum resin is 95 ℃;
the tackifying resin 2 of the present example was a styrene-modified C5 petroleum resin, wherein the styrene-modified C5 petroleum resin had a softening point of 95 ℃;
the tackifying resin 3 of the present example is a modified rosin resin, wherein the modified rosin resin has a softening point of 90 ℃;
the plasticizer in the embodiment is naphthenic oil KN-4010;
the antioxidant described in this example was a mixture of pentaerythritol tetrakis (3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate) and tris (2, 4-di-tert-butylphenyl) phosphite in a weight ratio of 2: 1.
Example 2
In the embodiment, the hot-melt pressure-sensitive adhesive comprises the following components in parts by weight: 30 parts of thermoplastic elastomer, 120 parts of tackifying resin, 220 parts of tackifying resin, 310 parts of tackifying resin, 19 parts of plasticizer and 1 part of antioxidant.
The thermoplastic elastomer in this example is a blend of SIS and SBS with a thermoplastic elastomer melt flow index of 22g/10min, a diblock fraction of 21%, and a block ratio of 22/78;
the tackifying resin 1 of the present example is a C5 petroleum resin, wherein the softening point of the C5 petroleum resin is 95 ℃;
the tackifying resin 2 of the present example was a styrene-modified C5 petroleum resin, wherein the styrene-modified C5 petroleum resin had a softening point of 95 ℃;
the tackifying resin 3 of the present example is a modified rosin resin, wherein the modified rosin resin has a softening point of 90 ℃;
the plasticizer in the embodiment is naphthenic oil KN-4010;
the antioxidant described in this example was a mixture of pentaerythritol tetrakis (3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate) and tris (2, 4-di-tert-butylphenyl) phosphite in a weight ratio of 2: 1.
That is, embodiment 2 differs from embodiment 1 only in that:
in the formulation components of the hot melt pressure sensitive adhesive, the thermoplastic elastomer of example 1 is replaced by a mixture of SIS and SBS, the weight ratio of SIS to SBS is 2:1, wherein the melt flow index of the mixture of SIS and SBS is 22g/10min, the diblock fraction is 21%, the block ratio is 22/78, the rest of the raw materials and the amount are the same as in example 1.
Example 3
The hot-melt pressure-sensitive adhesive in the embodiment comprises the following components in parts by weight: 30 parts of thermoplastic elastomer, 120 parts of tackifying resin, 220 parts of tackifying resin, 310 parts of tackifying resin, 19 parts of plasticizer and 1 part of antioxidant.
The thermoplastic elastomer of this example is SIS, where the thermoplastic elastomer has a melt flow index of 17g/10min, a diblock fraction of 15%, and a block ratio of 28/72;
the tackifying resin 1 of the present example is a terpene resin, wherein the terpene resin has a softening point of 95 ℃;
the tackifying resin 2 of the present example is a styrene-modified C5 petroleum resin, wherein the softening point of the styrene-modified C5 petroleum resin is 95 ℃;
the tackifying resin 3 of the present example is a modified rosin resin, wherein the modified rosin resin has a softening point of 90 ℃;
the plasticizer in the embodiment is naphthenic oil KN-4010;
the antioxidant described in this example was a mixture of pentaerythritol tetrakis (3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate) and tris (2, 4-di-tert-butylphenyl) phosphite in a weight ratio of 2: 1.
That is, embodiment 2 differs from embodiment 1 only in that:
hot melt pressure sensitive adhesive tackifying resin 1 of example 1 was replaced with a terpene resin having a softening point of 95 ℃.
The remaining raw materials and the amounts used were the same as in example 1.
Example 4
In the hot-melt pressure-sensitive adhesive in the embodiment, the tackifying resin 2 in the embodiment 1 is replaced by tall oil rosin resin, wherein the softening point of the tall oil rosin resin is 90 ℃.
Example 5
In the embodiment, the hot-melt pressure-sensitive adhesive replaces the thermoplastic elastomer in the embodiment 2 with a mixture of SIS and SBS, wherein the weight ratio of SIS to SBS is 2:1, the melt flow index of the mixture of SIS and SBS is 22g/10min, the diblock fraction is 30%, and the block ratio is 22/78;
the remaining raw materials and the amounts used were the same as in example 2.
Example 6
In the embodiment, the hot-melt pressure-sensitive adhesive replaces the thermoplastic elastomer in the embodiment 5 with a mixture of SIS and SBS, wherein the weight ratio of SIS to SBS is 2:1, the melt flow index of the mixture of SIS and SBS is 29g/10min, the diblock fraction is 30%, and the block ratio is 22/78;
the remaining raw materials and the amounts used were the same as in example 2.
Example 7
In the embodiment, the hot-melt pressure-sensitive adhesive replaces the thermoplastic elastomer in the embodiment 6 with a mixture of SIS and SBS, wherein the weight ratio of SIS to SBS is 2:1, the melt flow index of the mixture of SIS and SBS is 29g/10min, the diblock fraction is 30%, and the block ratio is 29/71;
the remaining raw materials and the amounts used were the same as in example 2.
Example 8
In the embodiment, the hot-melt pressure-sensitive adhesive replaces the thermoplastic elastomer in the embodiment 2 with a mixture of SIS and SBS, wherein the weight ratio of SIS to SBS is 3:1, the melt flow index of the mixture of SIS and SBS is 22g/10min, the diblock fraction is 21%, and the block ratio is 22/78;
the other raw materials and the amounts thereof were the same as in example 2
Comparative example 1
The hot-melt pressure-sensitive adhesive in the comparative example consists of the following components in parts by weight: 65 parts of thermoplastic elastomer, 110 parts of tackifying resin, 210 parts of tackifying resin, 14 parts of plasticizer and 1 part of antioxidant.
The specific composition of the contained raw materials was the same as in example 1 (except that the specific composition was contained in parts by weight different from that in example 1, and further, comparative example 1 did not contain tackifier resin 3).
Comparative example 2
Comparative example 2 differs from example 1 only in that: hot melt pressure sensitive adhesive the thermoplastic elastomer SIS of example 1 was replaced by SIS with a melt flow index of 5g/10 min.
The other raw materials and the amounts thereof were the same as in example 1
Comparative example 3
Comparative example 3 differs from example 1 only in that: the hot melt pressure sensitive adhesive was prepared by adjusting the plasticizer to 8 parts and the tackifier resin to 3 parts in example 1 to 15 parts.
The other raw materials and the amounts thereof were the same as in example 1
After the glue of the embodiments 1-8 and the comparative examples 1-3 is prepared, injecting the glue into coating equipment, coating the glue on release paper in a slit manner, compounding the glue with a surface layer, and rolling to obtain a label material; carrying out operation, mechanical property, labeling and die cutting tests on the label material;
initial adhesion, permanent adhesion, 170 ℃ viscosity, 450m/min coating test were carried out, and the results are shown in the following table:
TABLE 1 Performance test results for examples 1-8 and comparative examples 1-3
Comparing the example 1 with the example 2 and the example 8, the SBS can increase the cohesive strength, reduce the annular initial adhesion and increase the viscosity;
comparing example 3 with example 2, it can be seen that the terpene resin can improve the ring initial adhesion and cohesive strength of the glue, and increase the viscosity at the same time;
example 4 illustrates that different types of tackifying resins of the same type still have an effect on the viscosity of the glue;
comparing example 5 with example 2, it is seen that the diblock fraction increases initial viscosity, cohesive strength decreases, and viscosity decreases;
comparing example 6 with example 2, it can be seen that the melt flow index is increased, the initial viscosity is increased, the cohesive strength is reduced, and the viscosity is reduced;
comparing example 7 with example 2, it is seen that the block ratio is increased, the initial tack is decreased, the cohesive strength is increased, and the viscosity is decreased;
comparing comparative example 1 with example 1, it can be seen that the part of the thermoplastic elastomer is too large, the colloid viscosity is reduced, and the viscosity is increased;
comparing the comparative example 2 with the example 1, it can be seen that the thermoplastic elastic melt flow index is too low, and the viscosity is increased;
comparison of comparative example 3 with example 1 shows that the amount of plasticizer is too low, the viscosity of the gel decreases, and the viscosity increases.
From the test results of the above examples 1 to 8 and comparative examples 1 to 3, the hot melt pressure sensitive adhesive of the present invention capable of being coated at high speed has the following beneficial effects:
according to the hot-melt pressure-sensitive adhesive for high-speed coating, the types and the proportions of different thermoplastic elastomers are changed, so that the fluidity of the hot-melt pressure-sensitive adhesive is improved, the viscosity of the hot-melt pressure-sensitive adhesive is reduced, good cohesive strength is maintained, and good high-speed coating performance can be considered;
| item | Index (es) | Unit of | Detection method |
| Surface layer | 80g coated paper | ||
| Coating amount of glue | 16±1.0 | g/㎡ | |
| Initial adhesion | 20～24 | N | FTM9，ss |
| 90 degree peel force (20min) | 10 or paper tear | N/25mm | FTM2，ss |
| Permanent adhesion | H | FTM8，st | |
| Coating vehicle speed | 450 | m/min | |
| Die cutting vehicle speed | 120 | m/min |
Table 2 example 3 test results after preparation of labels from hot melt adhesives
As can be seen from Table 2, the hot melt pressure sensitive adhesive of the invention has the advantages of good initial adhesion, high peel strength and good adhesive holding capacity after being prepared into a self-adhesive label, has excellent die cutting performance, and can be used for coating the self-adhesive label at high speed.
The above description is only for the preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent modifications made by the present invention are within the scope of the present invention.
Claims (7)
1. The adhesive label is characterized by comprising the following components in sequence:
a face layer (1);
the hot melt adhesive layer (2) comprises the following raw materials in parts by weight: 15-60 parts of thermoplastic elastomer, 30-70 parts of tackifying resin, 10-30 parts of plasticizer and 0.3-1.2 parts of antioxidant;
a silicone oil layer (3);
a base paper layer (4).
2. The self-adhesive label according to claim 1, wherein the surface layer (1) is selected from any one of coated paper, thermal paper and synthetic paper.
3. The self-adhesive label according to claim 1, wherein the silicone oil layer (3) is prepared by coating solvent-free silicone oil and performing thermal curing, and the coating amount of silicone is 1g per square meter, wherein the solvent-free silicone oil comprises the following components in parts by weight:
100 parts of vinyl-containing silicone oil;
4-8 parts of silicone oil containing Si-H groups;
9.5 parts of platinum catalyst.
4. The self-adhesive label according to claim 1, wherein the base paper layer (4) is a glassine material and has a gram weight of 50-60 g per square meter.
5. The self-adhesive label according to claim 1, wherein the thermoplastic elastomer in the hot-melt adhesive layer (2) is selected from one or a mixture of SIS, SBS, SEBS and SEPS; the molecular structure of the thermoplastic elastomer can be any one or two of star-shaped structure and linear structure; the melt flow rate of the thermoplastic elastomer is 10-30 g/10 min; the diblock fraction of the thermoplastic elastomer is 20-30%, and the block ratio is 20/80-30/70; the tackifying resin is one or a mixture of more of terpene resin, petroleum resin (C5, C9, C5/C9 copolymerization), coumarone resin, rosin resin and modification or derivative thereof.
6. The self-adhesive label according to claim 1, wherein the plasticizer is any one or a mixture of several selected from naphthenic oil KN-4010, paraffin oil, white oil, phthalate esters and low molecular weight polytetramethylene glycol; the antioxidant is a mixture of pentaerythritol tetrakis (3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate) and tris (2, 4-di-tert-butylphenyl) phosphite, and the weight ratio of pentaerythritol tetrakis (3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate) to tris (2, 4-di-tert-butylphenyl) phosphite is 2: 1.
7. The method for preparing the self-adhesive label as claimed in any one of claims 1 to 6, which is characterized by comprising the following preparation steps:
s1 preparation of Hot melt adhesive
1) Weighing the components according to the proportion, wherein the solution polymerization type styrene butadiene rubber is crushed for standby;
2) putting the weighed plasticizer into a reaction kettle, stirring and heating the plasticizer to 120-130 ℃, and adding an antioxidant into the plasticizer;
3) after stirring for 10 minutes until no significant antioxidant particles were present in the kettle, the thermoplastic elastomer was slowly added. Controlling the temperature in the reaction kettle to be 145-155 ℃, vacuumizing to the vacuum degree of 0.085MPa, and continuously stirring until the thermoplastic elastomer is a uniform mixture;
4) adding tackifying resin into the reaction kettle, controlling the temperature in the reaction kettle to be 145-155 ℃, vacuumizing to the vacuum degree of 0.085MPa, increasing the stirring speed, stirring until the glue becomes a uniform transparent mixture, and finally discharging the glue.
Preparation of S2 self-adhesive label
And (3) after the glue in the S1 is prepared, injecting the glue into coating equipment, coating the glue on release paper cured by the coated silicone oil layer in a slit mode, compounding the glue with the surface layer 1, and rolling to obtain a label material, namely the self-adhesive label.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210470690.1A CN114940872A (en) | 2022-04-28 | 2022-04-28 | Adhesive label and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210470690.1A CN114940872A (en) | 2022-04-28 | 2022-04-28 | Adhesive label and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114940872A true CN114940872A (en) | 2022-08-26 |
Family
ID=82906565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210470690.1A Pending CN114940872A (en) | 2022-04-28 | 2022-04-28 | Adhesive label and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114940872A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1181779A (en) * | 1995-04-03 | 1998-05-13 | 埃克森化学专利公司 | Low viscosity hot melt pressure sensitive adhesive compsns. |
| CN103680303A (en) * | 2012-09-25 | 2014-03-26 | 昆山亿达包装有限公司 | Self-adhesive label |
| CN103709954A (en) * | 2013-12-24 | 2014-04-09 | 上海金大塑胶有限公司 | Preparation method of hot melt pressure-sensitive adhesive material |
| CN108130001A (en) * | 2017-12-20 | 2018-06-08 | 中科院广州化学有限公司 | A kind of room temperature rapid curing silicone release agent and preparation method thereof |
| CN110734719A (en) * | 2019-11-04 | 2020-01-31 | 淄博鲁华泓锦新材料股份有限公司 | Modified hot-melt pressure-sensitive adhesive and preparation method thereof |
-
2022
- 2022-04-28 CN CN202210470690.1A patent/CN114940872A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1181779A (en) * | 1995-04-03 | 1998-05-13 | 埃克森化学专利公司 | Low viscosity hot melt pressure sensitive adhesive compsns. |
| CN103680303A (en) * | 2012-09-25 | 2014-03-26 | 昆山亿达包装有限公司 | Self-adhesive label |
| CN103709954A (en) * | 2013-12-24 | 2014-04-09 | 上海金大塑胶有限公司 | Preparation method of hot melt pressure-sensitive adhesive material |
| CN108130001A (en) * | 2017-12-20 | 2018-06-08 | 中科院广州化学有限公司 | A kind of room temperature rapid curing silicone release agent and preparation method thereof |
| CN110734719A (en) * | 2019-11-04 | 2020-01-31 | 淄博鲁华泓锦新材料股份有限公司 | Modified hot-melt pressure-sensitive adhesive and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 张先亮等: "《胶粘与密封新技术》", 武汉大学出版社, pages: 386 - 387 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU678793B2 (en) | Pressure sensitive adhesives comprising liquid and solid rubbers | |
| CN107163893B (en) | Hot-melt pressure-sensitive adhesive | |
| CN106318292B (en) | A kind of removable hot-fusible pressure-sensitive adhesive and preparation method | |
| US6214935B1 (en) | Intermediate softening point resin-based hot melt PSAs | |
| CN111019575B (en) | High-temperature-resistant high-peeling-resistance hot-melt pressure-sensitive adhesive and preparation method thereof | |
| EP0798358A1 (en) | Radial styrene-isoprene-styrene based labeling pressure sensitive adhesive | |
| CN109054688B (en) | Heat aging non-sticking hot melt pressure-sensitive adhesive and preparation method thereof | |
| CN110734719A (en) | Modified hot-melt pressure-sensitive adhesive and preparation method thereof | |
| EP3715433B1 (en) | Hot-melt adhesive composition | |
| CN114292622A (en) | Hot-melt pressure-sensitive adhesive for house interior decoration wall sticker and preparation method thereof | |
| CN111218243B (en) | Hot-melt pressure-sensitive adhesive for sticking on wet surface and preparation method and application thereof | |
| CN110862791A (en) | Pressure-sensitive adhesive of high-function self-adhesive film for refrigerator door body and preparation method thereof | |
| RU2462496C2 (en) | Resin with mean softening temperature, pressure-sensitive hot-melt adhesive composition and adhesive article based thereon | |
| CN114163975A (en) | Hot-melt pressure-sensitive adhesive and preparation method and use method thereof | |
| CN110628369B (en) | Hot melt adhesive capable of being repeatedly attached and preparation method thereof | |
| CN114940872A (en) | Adhesive label and preparation method thereof | |
| CN114933888A (en) | Hot-melt pressure-sensitive adhesive capable of being coated at high speed and preparation method thereof | |
| CN114181649B (en) | Hot-melt pressure-sensitive adhesive for cotton coating and preparation method thereof | |
| CN115260952A (en) | Weather-resistant removable hot-melt pressure-sensitive adhesive material and preparation method and application thereof | |
| JP2023005102A (en) | Releasable adhesive composition | |
| CN111454676A (en) | Express logistics hot-melt pressure-sensitive adhesive with low creep and high viscosity and preparation method thereof | |
| CN111777986B (en) | Hot melt adhesive capable of improving waste discharge effect and preparation method thereof | |
| CN115820174B (en) | Hot-melt pressure-sensitive adhesive special for destroying adhesive tape and application of adhesive tape | |
| WO2024161866A1 (en) | Adhesive composition and adhesive sheet | |
| CN115926699A (en) | PET (polyethylene terephthalate) bottle labeling hot melt adhesive and preparation process thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |