CN111500202A - Adhesive film for carton packaging industry and preparation method thereof - Google Patents
Adhesive film for carton packaging industry and preparation method thereof Download PDFInfo
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- CN111500202A CN111500202A CN202010298506.0A CN202010298506A CN111500202A CN 111500202 A CN111500202 A CN 111500202A CN 202010298506 A CN202010298506 A CN 202010298506A CN 111500202 A CN111500202 A CN 111500202A
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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
- C09J7/00—Adhesives in the form of films or foils
- C09J7/10—Adhesives in the form of films or foils without carriers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
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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
- 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
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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
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
- C09J175/08—Polyurethanes from polyethers
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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
- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K2003/026—Phosphorus
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
- C08K2003/322—Ammonium phosphate
- C08K2003/323—Ammonium polyphosphate
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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
- C09J2475/00—Presence of polyurethane
Abstract
The invention provides an adhesive film for carton packaging industry and a preparation method thereof. The hot melt adhesive film has good binding force with wet objects and strong permeability, plays a physical and chemical binding role between the corrugated paper and the lining board, enhances the overall strength of the bonded carton, and ensures that the carton is not easy to deform and crack.
Description
Technical Field
The invention belongs to the field of hot melt adhesives, relates to an adhesive film, and particularly relates to an adhesive film for the carton packaging industry and a preparation method thereof.
Background
Thermoplastic Polyurethane (TPU) is a novel organic polymer synthetic material, has excellent properties, and can replace rubber and soft polyvinyl chloride material PVC. The TPU has excellent physical properties such as abrasion resistance and resilience better than those of common polyurethane and PVC, has aging resistance better than that of rubber, and is an ideal material for replacing PVC and PU.
The polyurethane glue is a glue containing urethane groups and isocyanate groups in molecular chains, and has high reactivity and can be cured at room temperature due to the fact that the polyurethane glue contains the isocyanate and the urethane groups with strong polarity, so that the polyurethane glue has excellent adhesive property on various materials such as metal, rubber, glass, ceramics, plastics, wood, fabrics, leather and the like. The main chain of the polyurethane has good flexibility, the polyurethane has the biggest characteristics of impact shock resistance and bending fatigue resistance, the peeling strength is high, the low-temperature resistance is excellent, and the polyurethane is taken as a chelating agent in the existing glue. The polyurethane glue has simple and convenient process, can be cured at room temperature and under heating, has small thermal stress influence when different materials are glued, and has wide application in various fields.
CN 105542701A discloses a formula of a novel polyurethane glue and a preparation method thereof, diisocyanate and polyether diol are added into a low-temperature normal-pressure reaction kettle for reaction, and then the reacted mixture is added into a high-temperature normal-pressure reaction kettle for reaction to prepare the novel polyurethane glue; the invention has the beneficial effects that: the method has the advantages of no solvent, small environmental influence, easy control of the process, short reaction time, no need of adding a combustion device which is expensive in price and easy to cause potential safety hazards, no solvent exists, safety risks caused by the existence of the solvent and high temperature in the drying process are eliminated, and the life and property safety of operators is relatively guaranteed. However, in the technical scheme, the provided polyurethane glue has lower bonding strength to metal.
CN 106398623A discloses a water-based polyurethane glue, which comprises the following components in parts by weight: 80-120 parts of 40-60% solid content aqueous polyurethane dispersoid, 0.05-0.8 part of defoaming agent, 0.1-1.0 part of wetting dispersant, 0.1-0.7 part of pH value regulator, 0.3-1.0 part of thickening agent and 0.01-0.8 part of bactericide. The waterborne polyurethane glue disclosed by the invention is prepared into the single-component waterborne polyurethane glue by using the waterborne polyurethane with medium crystallinity and matching with the components such as the pH value regulator, the thickening agent and the like, and has the characteristics of excellent ageing resistance and high temperature resistance, high storage stability, no volatilization of organic volatile matters, simple use process and the like. Meanwhile, the invention also discloses a preparation method of the waterborne polyurethane glue. However, in the technical scheme, the adhesive strength of the provided polyurethane glue to the metal is also lower.
In the prior art, the paper box packaging is made of the multi-purpose white glue, however, the white glue has the defects of weak adhesion, permeable capacity and the like, and the use of the hot melt glue in the paper box packaging is relatively less.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides the adhesive film for the carton packaging industry and the preparation method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention aims to provide an adhesive film for the carton packaging industry, which comprises the raw materials of hexamethylene diisocyanate, polyether polyol, a chain extender, a catalyst, a plasticizer, tackifying resin, a filler and an auxiliary agent.
As a preferable technical scheme of the invention, the adhesive film comprises the following raw materials in parts by weight:
wherein, the weight portion of the hexamethylene diisocyanate can be 71, 72, 73, 74, 75, 76, 77, 78 or 79, the weight portion of the polyether polyol can be 51, 52, 53, 54, 55, 56, 57, 58 or 59, the weight portion of the chain extender can be 11, 12, 13, 14, 15, 16, 17, 18 or 19, the weight portion of the catalyst can be 1.5, 2, 2.5, 3, 3.5, 4 or 4.5, the weight portion of the plasticizer can be 1.5, 2, 2.5, 3, 4 or 4.5, the weight portion of the tackifier resin can be 11, 12, 13, 14, 15, 16, 17, 18 or 19, the weight portion of the filler can be 21, 24, 23, 26, 27, 23, 26, 23, or 19, 28 parts or 29 parts, and the amount of the auxiliary may be 1.5 parts, 2 parts, 2.5 parts, 3 parts, 3.5 parts, 4 parts or 4.5 parts by weight, but the above ranges are not limited to the above-mentioned values, and other values not shown are also applicable.
As a preferable technical scheme of the invention, the adhesive film comprises the following raw materials in parts by weight:
in a preferred embodiment of the present invention, the polyether polyol has a polymerization degree of 3000 to 5000, such as 3000, 3500, 4000, 4500, 5000, etc., but the polymerization degree is not limited to the above-mentioned values, and other values not shown in the above-mentioned range are also applicable.
As a preferred embodiment of the present invention, the chain extender comprises any one of 1, 4-butanediol, 1, 6-hexanediol, diethylene glycol or diethylaminoethanol or a combination of at least two of them, and typical but non-limiting examples of the combination are: combinations of 1, 4-butanediol and 1, 6-hexanediol, combinations of 1, 6-hexanediol and diethylene glycol, combinations of diethylene glycol and diethylaminoethanol, combinations of diethylaminoethanol and 1, 4-butanediol, or combinations of 1, 4-butanediol, 1, 6-hexanediol, and diethylene glycol, and the like.
Preferably, the catalyst comprises any one of stannous chloride, stannous octoate, hydroxy trimethyl tin or dibutyl tin dilaurate or a combination of at least two of the following typical but non-limiting examples: combinations of stannous chloride and stannous octoate, stannous octoate and hydroxy trimethyl tin, hydroxy trimethyl tin and dibutyl tin dilaurate, or stannous chloride, stannous octoate and hydroxy trimethyl tin, and the like.
As a preferred embodiment of the present invention, the plasticizer comprises any one of dibutyl phthalate, diisononyl phthalate or dioctyl phthalate or a combination of at least two of these, typical but non-limiting examples being: a combination of dibutyl phthalate and diisononyl phthalate, a combination of diisononyl phthalate and dioctyl phthalate, a combination of dioctyl phthalate and dibutyl phthalate or a combination of dibutyl phthalate, diisononyl phthalate and dioctyl phthalate, etc.
Preferably, the tackifying resin comprises a rosin resin and/or a terpene resin.
Preferably, the filler comprises alumina and/or silica.
As a preferable technical scheme of the invention, the auxiliary agent comprises an antioxidant and a flame retardant.
Preferably, the flame retardant comprises any one of red phosphorus capsules, APP or MCA or a combination of at least two of the following typical but non-limiting examples: a combination of red phosphorus capsules and APP, a combination of APP and MCA, a combination of red phosphorus capsules and MCA or a combination of red phosphorus capsules, APP and MCA, and the like.
Preferably, the antioxidant comprises any one of antioxidant 1010, antioxidant 1076 or antioxidant 168, or a combination of at least two of these, typical but non-limiting examples being: a combination of antioxidant 1010 and antioxidant 1076, a combination of antioxidant 1076 and antioxidant 168, a combination of antioxidant 168 and antioxidant 1010 or a combination of antioxidant 1010, antioxidant 1076 and antioxidant 168.
Preferably, the amount of the flame retardant is 0.5 to 2.5 parts by weight, such as 0.6 part, 0.8 part, 1.0 part, 1.2 parts, 1.5 parts, 1.8 parts, 2.2 parts, or 2.4 parts, but not limited to the enumerated values, and any other non-enumerated values may be used.
Preferably, the antioxidant is present in an amount of 0.5 to 2.5 parts by weight, such as 0.6 parts, 0.8 parts, 1.0 parts, 1.2 parts, 1.5 parts, 1.8 parts, 2.2 parts, or 2.4 parts, but not limited to the recited values, and any range of values not recited is equally applicable.
In the invention, the plasticizer and the tackifying resin are added into the hot melt adhesive to generate a synergistic effect, so that the viscosity of the hot melt adhesive is increased, the softening temperature of the hot melt adhesive is reduced, and the tensile strength of the hot melt adhesive after film forming is enhanced.
The invention also aims to provide a preparation method of the adhesive film for the carton packaging industry, which comprises the following steps:
(1) adding hexamethyl diisocyanate into a storage tank A according to a ratio, adding polyether polyol into a storage tank B, adding a chain extender, a catalyst, a plasticizer, tackifying resin, a filler and an auxiliary agent into a storage tank C, and performing vacuum dehydration under a stirring condition;
(2) and (2) pumping and injecting the raw materials in the step (1) into a double-screw extruder, and carrying out reaction and underwater granulation by using the double-screw extruder to obtain hot melt adhesive granules for preparing the adhesive film.
In a preferred embodiment of the present invention, the temperature in the vacuum dehydration in the step (1) is 60 to 80 ℃, for example, 60 ℃, 63 ℃, 65 ℃, 68 ℃, 70 ℃, 72 ℃, 75 ℃, 78 ℃ or 80 ℃, but is not limited to the above-mentioned values, and other values not shown in the above-mentioned range are also applicable.
Preferably, the stirring rate in step (1) is 300-1000 r/min, such as 300r/min, 400r/min, 500r/min, 600r/min, 700r/min, 800r/min, 900r/min or 1000r/min, but not limited to the recited values, and other non-recited values in the range of values are also applicable.
Preferably, the vacuum dewatering pressure in step (1) is-0.3 to-0.1 kPa, such as-0.3 kPa, -0.28kPa, -0.25kPa, -0.23kPa, -0.2kPa, -0.18kPa, -0.15kPa, -0.13kPa, or-0.1 kPa, but not limited to the recited values, and other values not recited in the range of values are also applicable.
As the preferable technical scheme of the invention, the temperature of the feeding section of the double-screw extruder in the step (2) is 110-140 ℃, such as 115 ℃, 120 ℃, 125 ℃, 130 ℃ or 135 ℃ and the like; the temperature of the mixing section is 130-170 ℃, such as 135 ℃, 140 ℃, 145 ℃, 150 ℃, 155 ℃, 160 ℃ or 165 ℃ and the like; the temperature of the extrusion section is 170-190 ℃, such as 172 ℃, 175 ℃, 178 ℃, 180 ℃, 182 ℃, 185 ℃ or 188 ℃ and the like; the head temperature is 170 to 200 ℃, such as 175 ℃, 180 ℃, 185 ℃, 190 ℃ or 195 ℃, but not limited to the recited values, and other values not recited in the above numerical ranges are also applicable.
Compared with the prior art, the invention at least has the following beneficial effects:
(1) the invention provides a glue film for the carton packaging industry and a preparation method thereof, wherein the hot melt glue film has good binding force with wet objects and strong permeability, plays a physical and chemical binding role between corrugated paper and lining boards, enhances the overall strength of a bonded carton, and ensures that the carton is not easy to deform and crack;
(2) the softening temperature of the hot melt adhesive provided by the invention is lower than 100 ℃, the viscosity of the hot melt adhesive can reach 150000mPa & s when tested at 180 ℃, and the adhesive film has good performance at-20-60 ℃.
Drawings
FIG. 1 is a graph showing the relationship between the tensile strength and the temperature of the adhesive film according to the embodiment of the present invention.
The present invention is described in further detail below. The following examples are merely illustrative of the present invention and do not represent or limit the scope of the claims, which are defined by the claims.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
To better illustrate the invention and to facilitate the understanding of the technical solutions thereof, typical but non-limiting examples of the invention are as follows:
example 1
The embodiment provides a preparation method of an adhesive film for a carton packaging industry, which comprises the following steps:
(1) adding 70 parts of hexamethyl diisocyanate into a storage tank A, adding 50 parts of PPG3000 into a storage tank B, adding 10 parts of 1, 4-butanediol, 1 part of stannous chloride, 1 part of dibutyl phthalate, 10 parts of rosin resin, 20 parts of silicon dioxide, 0.5 part of antioxidant 1010 and 0.5 part of red phosphorus capsule into a storage tank C, and carrying out vacuum dehydration at 60 ℃ and-0.3 kPa under the stirring condition of 300 r/min;
(2) pumping the raw materials in the step (1) into a double-screw extruder, and carrying out reaction and underwater granulation by using the double-screw extruder to obtain hot melt adhesive particles for preparing the adhesive film;
the temperature of the feeding section of the double-screw extruder is 110 ℃, the temperature of the mixing section is 130 ℃, the temperature of the extrusion section is 170 ℃, and the temperature of the machine head is 170 ℃;
(3) and (3) heating the hot melt adhesive particles obtained in the step (2) at 100 ℃ for 10s until the hot melt adhesive particles are melted, coating the molten hot melt adhesive particles on a paper box for bonding, removing the adhesive particles, and cooling to obtain the adhesive film.
Example 2
The embodiment provides a preparation method of an adhesive film for a carton packaging industry, which comprises the following steps:
(1) adding 80 parts of hexamethyldiisocyanate into a storage tank A, 60 parts of PPG5000 into a storage tank B, adding 20 parts of 1, 6-hexanediol, 5 parts of stannous octoate, 5 parts of diisononyl phthalate, 20 parts of terpene resin, 30 parts of silicon dioxide, 2.5 parts of antioxidant 1076 and 2.5 parts of MCA into a storage tank C, and carrying out vacuum dehydration at 80 ℃ and-0.1 kPa under the stirring condition of 1000 r/min;
(2) pumping the raw materials in the step (1) into a double-screw extruder, and carrying out reaction and underwater granulation by using the double-screw extruder to obtain hot melt adhesive particles for preparing the adhesive film;
the temperature of the feeding section of the double-screw extruder is 140 ℃, the temperature of the mixing section is 170 ℃, the temperature of the extrusion section is 190 ℃, and the temperature of the machine head is 200 ℃;
(3) and (3) heating the hot melt adhesive particles obtained in the step (2) at 100 ℃ for 10s until the hot melt adhesive particles are melted, coating the molten hot melt adhesive particles on a paper box for bonding, removing the adhesive particles, and cooling to obtain the adhesive film.
Example 3
The embodiment provides a preparation method of an adhesive film for a carton packaging industry, which comprises the following steps:
(1) adding 72 parts of hexamethyl diisocyanate into a storage tank A, 55 parts of PPG4000 into a storage tank B, adding 12 parts of diethylene glycol, 2 parts of hydroxy trimethyl tin, 2 parts of dioctyl phthalate, 12 parts of rosin resin, 25 parts of silicon dioxide, 1 part of antioxidant 168 and 1 part of APP into a storage tank C, and carrying out vacuum dehydration at 70 ℃ and-0.2 kPa under the stirring condition of 500 r/min;
(2) pumping the raw materials in the step (1) into a double-screw extruder, and carrying out reaction and underwater granulation by using the double-screw extruder to obtain hot melt adhesive particles for preparing the adhesive film;
the temperature of the feeding section of the double-screw extruder is 120 ℃, the temperature of the mixing section is 140 ℃, the temperature of the extrusion section is 180 ℃, and the temperature of the machine head is 190 ℃;
(3) and (3) heating the hot melt adhesive particles obtained in the step (2) at 100 ℃ for 10s until the hot melt adhesive particles are melted, coating the molten hot melt adhesive particles on a paper box for bonding, removing the adhesive particles, and cooling to obtain the adhesive film.
Example 4
The embodiment provides a preparation method of an adhesive film for a carton packaging industry, which comprises the following steps:
(1) adding 78 parts of hexamethyl diisocyanate into a storage tank A, 58 parts of PPG4000 into a storage tank B, adding 15 parts of diethylaminoethanol, 3 parts of dibutyltin dilaurate, 3 parts of dioctyl phthalate, 18 parts of rosin resin, 28 parts of silicon dioxide, 1.5 parts of antioxidant 168 and 1.5 parts of APP into a storage tank C, and performing vacuum dehydration at 70 ℃ and-0.2 kPa under the stirring condition of 500 r/min;
(2) pumping the raw materials in the step (1) into a double-screw extruder, and carrying out reaction and underwater granulation by using the double-screw extruder to obtain hot melt adhesive particles for preparing the adhesive film;
the temperature of the feeding section of the double-screw extruder is 120 ℃, the temperature of the mixing section is 140 ℃, the temperature of the extrusion section is 180 ℃, and the temperature of the machine head is 190 ℃;
(3) and (3) heating the hot melt adhesive particles obtained in the step (2) at 100 ℃ for 10s until the hot melt adhesive particles are melted, coating the molten hot melt adhesive particles on a paper box for bonding, removing the adhesive particles, and cooling to obtain the adhesive film.
Example 5
The embodiment provides a preparation method of an adhesive film for a carton packaging industry, which comprises the following steps:
(1) adding 75 parts of hexamethyl diisocyanate into a storage tank A, 56 parts of PPG4000 into a storage tank B, adding 16 parts of diethylaminoethanol, 2.5 parts of dibutyl tin dilaurate, 2.5 parts of dioctyl phthalate, 15 parts of rosin resin, 26 parts of silicon dioxide, 1 part of antioxidant 168 and 1.5 parts of APP into a storage tank C, and performing vacuum dehydration at 70 ℃ and-0.2 kPa under the stirring condition of 500 r/min;
(2) pumping the raw materials in the step (1) into a double-screw extruder, and carrying out reaction and underwater granulation by using the double-screw extruder to obtain hot melt adhesive particles for preparing the adhesive film;
the temperature of the feeding section of the double-screw extruder is 120 ℃, the temperature of the mixing section is 140 ℃, the temperature of the extrusion section is 180 ℃, and the temperature of the machine head is 190 ℃;
(3) and (3) heating the hot melt adhesive particles obtained in the step (2) at 100 ℃ for 10s until the hot melt adhesive particles are melted, coating the molten hot melt adhesive particles on a paper box for bonding, removing the adhesive particles, and cooling to obtain the adhesive film.
Comparative example 1
This comparative example was conducted under the same conditions as example 5 except that the plasticizer was not added and an equal mass of tackifier resin was used instead.
Comparative example 2
This comparative example was conducted under the same conditions as example 5 except that the plasticizer was changed to an equal mass without adding a tackifier resin.
The results of the tests on the softening temperature, the viscosity after softening (180 ℃) and the tensile strength of the adhesive film (thickness 0.5mm) of the hot melt adhesive pellets obtained in examples 1 to 5 and comparative examples 1 to 2 are shown in Table 1.
TABLE 1
| Softening temperature/. degree.C | viscosity/mPas | Tensile strength/MPa | |
| Example 1 | 82 | 108350 | 3.5 |
| Example 2 | 97 | 149770 | 4.2 |
| Example 3 | 90 | 112020 | 3.6 |
| Example 4 | 95 | 135730 | 3.9 |
| Example 5 | 93 | 140960 | 3.7 |
| Comparative example 1 | 125 | 102530 | 1.2 |
| Comparative example 2 | 119 | 71370 | 3.0 |
As can be seen from the test results in Table 1, the hot melt adhesives prepared in examples 1-5 of the present application have a low softening point, a high viscosity, and excellent tensile strength after bonding. The tensile strength of the adhesive film is tested at different temperatures within the range of-30 to 80 ℃, and the adhesive film has good performance at the temperature of-20 to 60 ℃. In the manufacturing process of the adhesive film, the hot melt adhesive has the optimal viscosity when the paper surface processing temperature is 45-60 ℃. Comparative example 1 was the addition of a plasticizer, while comparative example 2 was the addition of no tackifying resin, resulting in comparative examples 1 and 2 having inferior performance in all respects to example 5.
The applicant declares that the present invention illustrates the detailed structural features of the present invention through the above embodiments, but the present invention is not limited to the above detailed structural features, that is, it does not mean that the present invention must be implemented depending on the above detailed structural features. It should be understood by those skilled in the art that any modifications of the present invention, equivalent substitutions of selected components of the present invention, additions of auxiliary components, selection of specific modes, etc., are within the scope and disclosure of the present invention.
The preferred embodiments of the present invention have been described in detail, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.
Claims (10)
1. An adhesive film for the carton packaging industry is characterized in that the raw materials of the adhesive film comprise hexamethylene diisocyanate, polyether polyol, a chain extender, a catalyst, a plasticizer, tackifying resin, a filler and an auxiliary agent.
2. The adhesive film according to claim 1, wherein the adhesive film comprises the following raw materials in parts by weight:
3. the adhesive film according to claim 1 or 2, wherein the adhesive film comprises the following raw materials in parts by weight:
4. the adhesive film according to any one of claims 1 to 3, wherein the polyether polyol has a degree of polymerization of 3000 to 5000.
5. The adhesive film according to any one of claims 1 to 4, wherein the chain extender comprises any one or a combination of at least two of 1, 4-butanediol, 1, 6-hexanediol, diethylene glycol or diethylaminoethanol;
preferably, the catalyst comprises any one of stannous chloride, stannous octoate, hydroxy trimethyl tin or dibutyl tin dilaurate or a combination of at least two of the foregoing.
6. Glue film according to any one of claims 1-5, characterised in that the plasticizer comprises any one or a combination of at least two of dibutyl phthalate, diisononyl phthalate or dioctyl phthalate;
preferably, the tackifying resin comprises a rosin resin and/or a terpene resin;
preferably, the filler comprises alumina and/or silica.
7. The glue film of any one of claims 1 to 6, wherein the auxiliaries comprise an antioxidant and a flame retardant;
preferably, the flame retardant comprises any one of red phosphorus capsules, APP or MCA or a combination of at least two of the same;
preferably, the antioxidant comprises any one of antioxidant 1010, antioxidant 1076 or antioxidant 168 or a combination of at least two of the same;
preferably, the weight part of the flame retardant is 0.5-2.5 parts;
preferably, the weight part of the antioxidant is 0.5-2.5 parts.
8. The glue film preparation method according to any one of claims 1 to 7, characterized in that it comprises the following steps:
(1) adding hexamethyl diisocyanate into a storage tank A according to a ratio, adding polyether polyol into a storage tank B, adding a chain extender, a catalyst, a plasticizer, tackifying resin, a filler and an auxiliary agent into a storage tank C, and performing vacuum dehydration under a stirring condition;
(2) and (2) pumping and injecting the raw materials in the step (1) into a double-screw extruder, and carrying out reaction and underwater granulation by using the double-screw extruder to obtain hot melt adhesive granules for preparing the adhesive film.
9. The preparation method according to claim 8, wherein the temperature of the vacuum dehydration in the step (1) is 60 to 80 ℃;
preferably, the stirring speed in the step (1) is 300-1000 r/min;
preferably, the pressure in the vacuum dehydration in the step (1) is-0.3 to-0.1 kPa.
10. The preparation method of claim 8, wherein the temperature of the feeding section of the twin-screw extruder in the step (2) is 110-140 ℃, the temperature of the mixing section is 130-170 ℃, the temperature of the extrusion section is 170-190 ℃, and the temperature of the head is 170-200 ℃.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010298506.0A CN111500202A (en) | 2020-04-16 | 2020-04-16 | Adhesive film for carton packaging industry and preparation method thereof |
| PCT/CN2020/140463 WO2021208508A1 (en) | 2020-04-16 | 2020-12-29 | Adhesive film for carton packaging industry and preparation method therefor |
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| CN202010298506.0A CN111500202A (en) | 2020-04-16 | 2020-04-16 | Adhesive film for carton packaging industry and preparation method thereof |
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| CN111500202A true CN111500202A (en) | 2020-08-07 |
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| CN202010298506.0A Pending CN111500202A (en) | 2020-04-16 | 2020-04-16 | Adhesive film for carton packaging industry and preparation method thereof |
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| WO (1) | WO2021208508A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021208508A1 (en) * | 2020-04-16 | 2021-10-21 | 何建雄 | Adhesive film for carton packaging industry and preparation method therefor |
| CN113980610A (en) * | 2021-12-02 | 2022-01-28 | 东莞市墨田科技实业有限公司 | Nomex paper flame-retardant polyurethane hot-pressed adhesive film and preparation method thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114591714B (en) * | 2022-04-02 | 2023-07-21 | 中路交科科技股份有限公司 | Hot melt adhesive for road expansion joint and preparation method thereof |
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| EP3031839A1 (en) * | 2014-12-11 | 2016-06-15 | Sika Technology AG | Breathable polyurethane hot melt adhesives |
| CN106833491A (en) * | 2017-02-21 | 2017-06-13 | 东莞市雄林新材料科技股份有限公司 | A kind of new type hot-melt adhesive and its formula |
| CN109666441A (en) * | 2018-12-12 | 2019-04-23 | 江苏瑞德新能源科技有限公司 | A kind of one-component reaction type polyurethane hot-melt adhesive and preparation method thereof |
| CN110698622A (en) * | 2019-10-12 | 2020-01-17 | 北京长润化工有限公司 | Ketimine latent curing agent, reactive polyurethane hot melt adhesive with ketimine latent curing agent and application of reactive polyurethane hot melt adhesive |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111500202A (en) * | 2020-04-16 | 2020-08-07 | 东莞市雄林新材料科技股份有限公司 | Adhesive film for carton packaging industry and preparation method thereof |
-
2020
- 2020-04-16 CN CN202010298506.0A patent/CN111500202A/en active Pending
- 2020-12-29 WO PCT/CN2020/140463 patent/WO2021208508A1/en active Application Filing
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|---|---|---|---|---|
| EP3031839A1 (en) * | 2014-12-11 | 2016-06-15 | Sika Technology AG | Breathable polyurethane hot melt adhesives |
| CN106833491A (en) * | 2017-02-21 | 2017-06-13 | 东莞市雄林新材料科技股份有限公司 | A kind of new type hot-melt adhesive and its formula |
| CN109666441A (en) * | 2018-12-12 | 2019-04-23 | 江苏瑞德新能源科技有限公司 | A kind of one-component reaction type polyurethane hot-melt adhesive and preparation method thereof |
| CN110698622A (en) * | 2019-10-12 | 2020-01-17 | 北京长润化工有限公司 | Ketimine latent curing agent, reactive polyurethane hot melt adhesive with ketimine latent curing agent and application of reactive polyurethane hot melt adhesive |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021208508A1 (en) * | 2020-04-16 | 2021-10-21 | 何建雄 | Adhesive film for carton packaging industry and preparation method therefor |
| CN113980610A (en) * | 2021-12-02 | 2022-01-28 | 东莞市墨田科技实业有限公司 | Nomex paper flame-retardant polyurethane hot-pressed adhesive film and preparation method thereof |
| CN113980610B (en) * | 2021-12-02 | 2023-03-03 | 东莞市墨田科技实业有限公司 | Nomex paper flame-retardant polyurethane hot-pressed adhesive film and preparation method thereof |
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| WO2021208508A1 (en) | 2021-10-21 |
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