CN112680128A - Preparation method of packaging adhesive tape - Google Patents
Preparation method of packaging adhesive tape Download PDFInfo
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- CN112680128A CN112680128A CN202011561406.9A CN202011561406A CN112680128A CN 112680128 A CN112680128 A CN 112680128A CN 202011561406 A CN202011561406 A CN 202011561406A CN 112680128 A CN112680128 A CN 112680128A
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Abstract
The invention discloses a preparation method of a packaging adhesive tape, wherein the packaging adhesive tape sequentially comprises a release layer, a substrate layer and an adhesive layer from outside to inside, and the preparation method comprises the following steps: 1) performing double-sided corona treatment on the surface of the base material layer; 2) coating a release layer on the surface of one side of the base material layer subjected to corona treatment in the step 1) in a heat crosslinking or UV crosslinking mode; 3) step 2), coating an adhesive on the other side of the base material layer and drying; 4) curing the semi-finished product dried in the step 3); 5) and 4) cutting and coloring the cured semi-finished product obtained in the step 4) to obtain the packaging adhesive tape. When the adhesive tape is used in an automatic laminating device, when medical article wastes pass through a feeding port of the automatic laminating device, the adhesive surfaces of two rolls of adhesive tapes are mutually laminated, the medical article wastes are encapsulated in the adhesive tapes, and the adhesive tapes generate adhesive strength, adhesive base force and soaking impermeability during lamination, so that the medical article wastes are prevented from leaking and diffusing.
Description
Technical Field
The invention relates to a medical packaging adhesive tape, in particular to a preparation method of a packaging adhesive tape.
Background
Medical supplies waste is waste which is generated by medical and health institutions in medical treatment, prevention, health care and other related activities and has direct or indirect infectivity, toxicity and other harmfulness, and has extremely strong infectivity, biotoxicity and corrosivity. Including cotton balls, cotton swabs, drainage slivers, gauze and other various dressings which are polluted by blood, body fluid and excrement of a patient. The waste is typically discarded directly into a medical waste packaging bag. During the disposal process, the packaging bag is usually required to be always in an open state, and even if the flip-type garbage can is adopted, the medical waste packaging bag is also in the open state during the disposal process. Increasing the risk of leakage and diffusion of medical waste. Therefore, the medical waste needs to be packaged and collected in a contact-free and sealed and safer way.
Disclosure of Invention
The invention aims at the problems and provides a preparation method of a packaging adhesive tape, the packaging adhesive tape sequentially comprises a release layer, a substrate layer and an adhesive layer from outside to inside, and the method comprises the following steps:
1) carrying out double-sided corona treatment on the surface of the base material layer, wherein the output power is 1.5-6kW, the speed is 5-50m/min, and the wetting tension of the surface of the base material layer after corona treatment is ensured to be not less than 48 mN/m;
2) coating a release layer on the surface of one side of the base material layer subjected to corona treatment in the step 1) in a heat crosslinking or UV crosslinking mode;
3) step 2) coating an adhesive on the other side of the base material layer, and drying at 70-100 ℃;
4) curing the semi-finished product dried in the step 3), wherein the curing temperature is 40-60 ℃, and the curing time is 24-168 hours;
5) and 4) cutting and coloring the cured semi-finished product obtained in the step 4) to obtain the packaging adhesive tape.
Further, the substrate layer is selected from one of PE, PP or PET materials, and the thickness of the substrate layer is 0.03-0.1 mm; the thickness of the adhesive layer is 0.003-0.03mm, and the thickness of the adhesive layer is selected from one of rubber pressure-sensitive adhesive, acrylate pressure-sensitive adhesive, polyurethane pressure-sensitive adhesive or organic silicon pressure-sensitive adhesive.
In the method, the coating speed of the step 2) is 20-200m/min, and the release coating weight is 0.1-5g/m2The release force after coating is 3-600g/25 mm.
In the step 3), the adhesive consists of the following substances in parts by weight: 4-8 parts of tackifying resin, 0-2 parts of polybutylene plasticizer, 8-12 parts of natural rubber and synthetic rubber compound, 0.05-0.3 part of antioxidant, 0-2 parts of filler, 30-80 parts of solvent and 0.5-3 parts of cross-linking agent; the preparation method of the adhesive comprises the steps of weighing the substances according to the weight parts, adding the tackifying resin, the polybutene plasticizer, the natural rubber synthetic rubber compound, the antioxidant, the filler and the solvent into a stirring and dissolving kettle, stirring and dissolving, wherein the stirring speed is 20-200r/min, the stirring time is 8-72h, adding the cross-linking agent, and fully and uniformly mixing to obtain the adhesive. Wherein the tackifying resin is one of hydrogenated and unhydrogenated petroleum resins and terpene resins, the hydrocarbon resin is hydrogenated C5 petroleum resin, hydrogenated C5/C9 polymer, or aromatic modified selectively hydrogenated dicyclopentadiene derivatives; the antioxidant is one of sterically hindered phenol, phosphite ester or sulfur-containing synergist; the filler is one or more of carbon black, zinc oxide, titanium dioxide, solid microspheres, solid or hollow glass spheres and silicon dioxide; one or more of the solvent toluene, ethyl acetate, solvent gasoline or n-hexane; the cross-linking agent is one or more of polymethylene phenyl polyisocyanate, toluene dicyanate, diphenylmethane p-diisocyanate, hexamethylene diisocyanate or triphenylmethane triisocyanate.
The invention has the beneficial effects that: when the adhesive tape is used in an automatic laminating device, when medical article wastes pass through a feeding port of the automatic laminating device, the adhesive surfaces of two rolls of adhesive tapes are mutually laminated, the medical article wastes are encapsulated in the adhesive tapes, and the adhesive tapes generate adhesive strength, adhesive base force and soaking impermeability during lamination, so that the medical article wastes are prevented from leaking and diffusing.
Detailed Description
The present invention is described below with reference to examples, which are provided for illustration only and are not intended to limit the scope of the present invention.
Example 1
A preparation method of the packaging adhesive tape comprises the following steps:
step one, preparing base glue: 8 parts of natural rubber white crepe and 11332 parts of American kraton D of styrene-butadiene-styrene (SBS) are plasticated by an open mill, plasticated in three sections, thin-passing each section for 8 times, and standing for 24 hours after plastication is finished, wherein the distance between two rollers of the open mill is 1.5 mm. Adding 10 parts of the mixed rubber, 56006 parts of exxonmobil Escorez, 10100.12 parts of antioxidant and 64 parts of toluene into a stirring and dissolving kettle, stirring and dissolving at the stirring speed of 40r/min for 48h, wherein the solid content of the base rubber is 20% after stirring, and the viscosity of the base rubber is 18000mPa & s;
step two, preparing the adhesive tape: carrying out double-sided corona treatment on a PE film with the thickness of 0.050mm on a coating machine, and carrying out organic silicon release treatment on one side of the PE film by using a 200-mesh wire roller, wherein the temperature of an oven is 120-135 ℃, the coating speed is 80m/min, and the release coating amount is 0.15g/m2The release force is 15g/25mm, the other side of the PE film with the thickness of 0.050mm is coated with an adhesive, the adhesive is prepared by adding 1% of triphenylmethane triisocyanate into the base adhesive, stirring the mixture by using a dispersion stirrer at the rotating speed of 300r/min for 60min, the dry adhesive thickness of the adhesive layer is 0.015mm, a scraper transfer type coating mode is adopted, the drying temperature of an oven is 110-130 ℃, the coating speed is 40m/min, the coated semi-finished adhesive tape parent roll is cured, the curing temperature is 50 ℃, the curing time is 72h, the cured semi-finished adhesive tape is cut by a splitting machine, the width is 150mm, the length is 150m, the inner diameter of a roll core is 25mm, and the wall thickness of the roll core is 2.5 mm.
Example 2
A preparation method of the packaging adhesive tape comprises the following steps:
step one, preparing base glue: 10 parts of natural rubber smoked sheet rubber, 11614 parts of styrene-isoprene-styrene (SIS) Keteng kraton D, plasticating by an open mill, refining in two sections, thinning for 12 times in each section, keeping the distance between two rollers of the open mill at 1.0mm, standing for 24h after plasticating is completed, adding 10 parts of mixed rubber, T-1005 parts of Jiangxi Mashan chemical terpene resin, Xinjiang ClarityKN 40101.5 parts of naphthenic oil, 1680.15 parts of antioxidant and 60 parts of toluene into a stirring and dissolving kettle, stirring and dissolving at the stirring speed of 35r/min for 36h, wherein the solid content of base rubber is 21.6% after stirring is completed, and the viscosity of the base rubber is 14000 mPas;
step two, preparing the adhesive tape: thinning the PE film with the thickness of 0.060mmThe film was corona treated on both sides on a coater and silicone release treated on one side with a 200 mesh screen roller. The temperature of the oven is 120-135 ℃, the coating speed is 80m/min, and the release coating weight is 0.15g/m2The release force is 15g/25mm, the other side of the PE film with the thickness of 0.060mm is coated with an adhesive, the adhesive is prepared by adding 1 percent of triphenylmethane triisocyanate into the base adhesive, stirring the mixture by a dispersion stirrer at the rotating speed of 300r/min for 60min, the dry adhesive thickness of the adhesive layer is 0.010mm, a direct coating mode of a scraper is adopted, the drying temperature of an oven is 110-.
Example 3
A preparation method of the packaging adhesive tape comprises the following steps:
step one, preparing base glue: 10 parts of natural rubber light-color crepe rubber and 15025 parts of randomly copolymerized styrene-butadiene rubber (SBR) Jilin petrochemical rubber, internally mixing for 12min at the temperature of 125 ℃ by using an internal mixer, standing for 24h after plastication, adding 10 parts of mixed rubber, 1007 parts of rosin resin Guangxi Stephania waste chemical GA, 0.5 part of titanium dioxide, 10100.1 parts of antioxidant and 52.5 parts of methylbenzene into a stirring and dissolving kettle, stirring and dissolving at the stirring speed of 40r/min for 72h, wherein the solid content of base rubber is 25% after stirring, and the viscosity of the base rubber is 22000mPa & s;
step two, preparing the adhesive tape: performing double-sided corona treatment on PE film with thickness of 0.070mm on a coating machine, and performing non-silicon release treatment on one side of the PE film by using 200-mesh screen roller, wherein the oven temperature is 80-100 deg.C, the coating speed is 100m/min, and the release coating amount is 0.20g/m2The release force is 500g/25mm, the other side of the PE film with the thickness of 0.060mm is coated with an adhesive, the adhesive is prepared by adding 1.5 percent of toluene diisocyanate into the base adhesive, stirring by using a dispersion stirrer at the rotating speed of 300 revolutions per minute for 60min, the dry adhesive thickness of the adhesive layer is 0.015mm, and a scraper is adopted to straighten the adhesiveCoating and coating, wherein the drying temperature of an oven is 110-.
Example 4
A preparation method of the packaging adhesive tape comprises the following steps:
step one, preparing base glue: 6 parts of natural rubber light-color crepe rubber, 6 parts of styrene-isoprene-styrene (SIS) American kraton D11132 parts, and 11332 parts of styrene-butadiene-styrene (SBS) American kraton D11332 parts, plasticating by using an open mill, plasticating for one section, wherein each section is plasticated for 15 times, the distance between two rollers of the open mill is 1.0mm, standing for 24 hours after plasticating is completed, using, adding 10 parts of the mixed rubber, 10 parts of hydrogenated petroleum resin Nanjing Yangmann C-100W2.5 parts, T-1003.5 parts of Jiangxi Mashan chemical terpene resin, 10100.15 parts of antioxidant and 38 parts of toluene into a stirring and dissolving kettle, and stirring and dissolving. The stirring speed is 35r/min, the stirring time is 48h, the solid content of the base adhesive after stirring is 29.6%, and the viscosity of the base adhesive is 25000mPa & s;
step two, preparing the adhesive tape: performing double-sided corona treatment on PE film with thickness of 0.060mm on a coater, and performing organic silicon release treatment on one side of the PE film by using a 200-mesh screen roller, wherein the oven temperature is 120-135 ℃, the coating speed is 80m/min, and the release coating amount is 0.20g/m2The release force is 10g/25mm, and the other side of the PE film with the thickness of 0.060mm is coated with an adhesive, wherein the adhesive is prepared by adding 0.8% of triphenylmethane triisocyanate into the base adhesive and stirring the mixture by a dispersion stirrer at the rotating speed of 300r/min for 60 min. The dry adhesive thickness of the adhesive layer is 0.010mm, a scraper transfer type coating mode is adopted, the drying temperature of an oven is 110-130 ℃, the coating speed is 40m/min, the coated semi-finished adhesive tape parent roll is cured, the curing temperature is 50 ℃, the curing time is 72h, the cured semi-finished adhesive tape is cut by a cutting machine, the width is 150mm, the length is 150m, the inner diameter of a winding core is 25mm, and the wall thickness of the winding core is 2.5 mm.
Example 5
A preparation method of the packaging adhesive tape comprises the following steps:
step one, preparing base glue: 10 parts of natural rubber light-color crepe rubber is plasticated by an open mill, one section of plastication is carried out, each section of plastication is thinned and passed through for 8 times, the distance between two rollers of the open mill is 1.0mm, the mixture is used after standing for 24h after the plastication is finished, and 10 parts of mixed rubber, 10 parts of hydrogenated petroleum resin Exxon Escorez 56336.5 parts, T-1002.5 parts of Mount Jiangxi chemical terpene resin, 1680.15 parts of antioxidant and 45 parts of toluene are added into a stirring and dissolving kettle and stirred and dissolved. The stirring speed is 35r/min, the stirring time is 48h, the solid content of the base adhesive after stirring is 25%, and the viscosity of the base adhesive is 23000mPa & s;
step two, preparing the adhesive tape: carrying out double-sided corona treatment on a PE film with the thickness of 0.070mm on a coating machine, and carrying out organic silicon release treatment on one side of the PE film by using a 200-mesh screen roller, wherein the temperature of an oven is 120-135 ℃, the coating speed is 80m/min, and the release coating weight is 0.20g/m2The release force is 10g/25mm, the other side of the PE film with the thickness of 0.070mm is coated with an adhesive, the adhesive is prepared by adding 1.5% of triphenylmethane triisocyanate into the base adhesive, stirring the mixture by a dispersion stirrer at the rotating speed of 300r/min for 60min, the dry adhesive thickness of the adhesive layer is 0.015mm, a scraper transfer coating mode is adopted, the drying temperature of an oven is 110-130 ℃, the coating speed is 40m/min, the coated semi-finished adhesive tape parent roll is cured at the curing temperature of 50 ℃ for 72h, the cured semi-finished adhesive tape is cut by a splitting machine, the width is 150mm, the length is 150m, the inner diameter of the roll core is 25mm, and the wall thickness of the roll core is 2.5 mm.
The packaging tapes obtained in examples 1 to 5 were tested as follows:
1) bonding strength: taking two adhesive tapes with the width of 40mm and the length of 200mm, respectively pre-laminating the gluing surfaces of the two adhesive tapes, flatly laminating, free of wrinkles and bubbles, rolling the two adhesive tapes back and forth for three times by using a 2kg rubber compression roller, standing for 2 hours and then testing, cutting the two adhesive tapes into the adhesive tapes with the width of 25mm and the length of 150mm, and pre-stripping the two adhesive tapes along the length direction, wherein the pre-stripping lengths are respectively 50 mm. The upper and lower portions of the pre-peeled adhesive tape were respectively set in upper and lower clamps of a KJ-1065 peel force tester (available from Kokai Co., Ltd.) and tested for peel strength at 300 mm/min.
2) Adhesion force: the adhesive surfaces of the adhesive tapes are mutually bonded by more than 50mm, pulled apart at the speed of 100mm/s, and the times of the adhesive surfaces being degummed are recorded.
3) Soaking impermeability: taking two adhesive tapes, and pre-laminating the adhesive surfaces of the two adhesive tapes respectively, wherein the adhesive surfaces are flat without wrinkles or bubbles. Rolling the mixture three times with 2kg rubber roller, standing for 2h, cutting the adhesive tape into 50mm × 50mm samples, putting into 80 deg.C water for 24h, taking out, observing whether the edge of the adhesive tape is separated, and measuring the length of the longest separated part of the adhesive tape.
The test results are shown in table 1.
TABLE 1 Performance testing of the packaging tapes obtained in examples 1 to 5
| Item | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 |
| Thickness of substrate (mm) | 0.050 | 0.060 | 0.070 | 0.070 | 0.070 |
| Glue line thickness (mm) | 0.015 | 0.010 | 0.015 | 0.010 | 0.015 |
| Adhesive strength (N/25mm) | 14.35 | 18.20 | 16.32 | 15.60 | 16.25 |
| Adhesive force (times) | ＞10 | ＞10 | ＞10 | ＞10 | ＞10 |
| Soak impermeability (mm) | Without disengagement | Without disengagement | Without disengagement | Without disengagement | Without disengagement |
From the results shown in table 1, it can be seen that the properties of the adhesive strength, the adhesive base force and the immersion impermeability of the packaging tape of the present invention can satisfy the packaging requirements of medical waste.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (5)
1. The preparation method of the packaging adhesive tape comprises the following steps of sequentially forming a release layer, a substrate layer and an adhesive layer from outside to inside:
1) carrying out double-sided corona treatment on the surface of the base material layer, wherein the output power is 1.5-6kW, the speed is 5-50m/min, and the wetting tension of the surface of the base material layer after corona treatment is ensured to be not less than 48 mN/m;
2) coating a release layer on the surface of one side of the base material layer subjected to corona treatment in the step 1) in a heat crosslinking or UV crosslinking mode;
3) step 2) coating an adhesive on the other side of the base material layer, and drying at 70-100 ℃;
4) curing the semi-finished product dried in the step 3), wherein the curing temperature is 40-60 ℃, and the curing time is 24-168 hours;
5) and 4) cutting and coloring the cured semi-finished product obtained in the step 4) to obtain the packaging adhesive tape.
2. The method for preparing packaging tape according to claim 1, wherein the substrate layer is selected from one of PE, PP or PET material, and has a thickness of 0.03-0.1 mm; the thickness of the adhesive layer is 0.003-0.03mm, and the thickness of the adhesive layer is selected from one of rubber pressure-sensitive adhesive, acrylate pressure-sensitive adhesive, polyurethane pressure-sensitive adhesive or organic silicon pressure-sensitive adhesive.
3. The method of claim 1, wherein in step 2), the coating speed is 20-200m/min, and the release coating amount is 0.1-5g/m2The release force after coating is 3-600g/25 mm.
4. The method for preparing the packaging tape according to claim 1, wherein in the step 3), the adhesive comprises the following substances in parts by weight:
4-8 parts of tackifying resin, 0-2 parts of polybutylene plasticizer, 8-12 parts of natural rubber and synthetic rubber compound, 0.05-0.3 part of antioxidant, 0-2 parts of filler, 30-80 parts of solvent and 0.5-3 parts of cross-linking agent;
the preparation method of the adhesive comprises the steps of weighing the substances according to the weight parts, adding the tackifying resin, the polybutene plasticizer, the natural rubber and synthetic rubber compound, the antioxidant, the filler and the solvent into a stirring and dissolving kettle, stirring and dissolving, wherein the stirring speed is 20-200r/min, the stirring time is 8-72h, adding the cross-linking agent, and fully and uniformly mixing to obtain the adhesive.
5. The method of claim 4, wherein the tackifying resin is one of hydrogenated and unhydrogenated petroleum resins and terpene resins, hydrocarbon resins are hydrogenated C5 petroleum resins, hydrogenated C5/C9 polymers or aromatic modified selectively hydrogenated dicyclopentadiene derivatives; the antioxidant is one of sterically hindered phenol, phosphite ester or sulfur-containing synergist; the filler is one or more of carbon black, zinc oxide, titanium dioxide, solid microspheres, solid or hollow glass spheres and silicon dioxide; one or more of the solvent toluene, ethyl acetate, solvent gasoline or n-hexane; the cross-linking agent is one or more of polymethylene phenyl polyisocyanate, toluene dicyanate, diphenylmethane p-diisocyanate, hexamethylene diisocyanate or triphenylmethane triisocyanate.
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| CN202011561406.9A CN112680128A (en) | 2020-12-25 | 2020-12-25 | Preparation method of packaging adhesive tape |
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