CN102922856A - Method for preparing officinal cold forming composite aluminum foil - Google Patents
Method for preparing officinal cold forming composite aluminum foil Download PDFInfo
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- CN102922856A CN102922856A CN201210437432XA CN201210437432A CN102922856A CN 102922856 A CN102922856 A CN 102922856A CN 201210437432X A CN201210437432X A CN 201210437432XA CN 201210437432 A CN201210437432 A CN 201210437432A CN 102922856 A CN102922856 A CN 102922856A
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- aluminum foil
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Abstract
The invention discloses a method for preparing an officinal cold forming composite aluminum foil. The officinal cold forming composite aluminum foil is composed of five layers of structures, wherein the five layers of structures are polyamide (PA), an adhesive, an aluminum foil body, the adhesive and polyvinyl chloride (PVC) respectively. The method comprises the step of conducting press fitting and curing on the PA, the aluminum foil body and a PVC film with two layers of adhesives by using a compound method of coating and hot pressing. By the aid of the method, the time for high-temperature curing is greatly shortened, the production efficiency is improved, the energy consumption is reduced, the production cost is reduced, and simultaneously, a method of coiled material releasing and coiled material tightening is adopted during high-temperature curing, so that the uniformity of the product quality can be guaranteed, and the product quality can be improved.
Description
Technical field
The invention belongs to field of packaging material, be specifically related to a kind of preparation method of medicinal cold-forming composite aluminum foil.
Background technology
Medicinal cold-forming composite aluminum foil is a kind of high-quality pharmaceutical packing material.Its structure generally is divided into five layers: nylon (PA), adhesive, aluminium foil, adhesive, PVC, generally adopt epoxy resin, adhesive for polyurethane.Its major function is the container as medicine, and protects medicine, prevents that external environment is on the impact of medicine quality.Specifically, require this composite hard sheet to possess certain mechanical strength, have the ability of excellent obstruct steam, illumination, gas, and possess excellent cold stamping shaped performance, so that follow-up punch forming.
Patent CN201132408 has proposed a kind of manufacture craft of medicinal cold-forming composite aluminum foil, first applies glue at the PA film, and then to carry out hot pressing compound with aluminium foil, and cementing on aluminium foil carries out compound with the PVC film more afterwards.More than 8 days, take the mode that hangs 55-60 ℃ of slaking during slaking afterwards.Because time of slaking is long, adopt hang simultaneously, needs very large oven space between the maturation period, causes the efficient of this preparation method very low.
Summary of the invention
Goal of the invention: for the problems and shortcomings that prior art exists, the purpose of this invention is to provide a kind of high efficiency, the preparation method of medicinal cold-forming composite aluminum foil cheaply.
Technical scheme: for achieving the above object, the preparation method of medicinal cold-forming composite aluminum foil of the present invention may further comprise the steps:
(1) prepare adhesive for polyurethane, solvent is ethyl acetate;
(2) polyurethane coating adhesive on the PA film carries out drying afterwards under 60-120 ℃ temperature conditions, obtain gluing PA film, and the THICKNESS CONTROL of glue-line is at the 3-8 micron after the oven dry;
(3) above-mentioned gluing PA film and aluminium foil are carried out hot pressing, obtain the PA-foil laminated film.Temperature is 60-70 ℃, and pressure is 3-10MPa.
(4) polyurethane coating adhesive on the aluminium foil surface of PA-foil laminated film arrives 60-120 ℃ of drying afterwards.The THICKNESS CONTROL of glue-line is at the 3-8 micron after the oven dry.
(5) above-mentioned gluing composite membrane and PVC are carried out hot pressing, obtain PA-aluminium foil-PVC composite membrane.Temperature is 60-70 ℃ during pressing, and pressure is 3-10MPa.
Aborning, step (2) ~ (5) all are that the coating complex machine device in automation carries out, and what obtain is the composite membrane of rolling, and used volume core generally has 3 inches, 6 inches two kinds, usually adopts the metal materials such as aluminium, steel.Used coating method can be intaglio plate coating, anilox roll coating, reverse roll coating, extruded type coating etc.The speed of coating is relevant with the mode of coating, and for example the coating of intaglio plate formula can reach 120 m/mins.
(6) carry out maturation process: prepare a metallic cylinder that length is suitable with composite membrane width, vertically place, then Combined roll is placed in the middle of the metallic cylinder, even rotating metallic volume core (generally adopting motor) firmly again, composite membrane is thrown away under the effect of centrifugal force, and it throws away scope and is limited by metallic cylinder.Like this, the composite membrane that is tightened up during rolling is released, the slit occurs between layers, be rotated further the metallic coil core, until the slit all occurs between every one deck of the composite membrane of entire volume, then it is placed on temperature and is in 50-60 ℃ the drying room and placed 2 days, then be transferred to normal temperature and place more than 7 days.This mode can guarantee that the composite membrane of entire volume can be uniformly heated, slaking.Gas can discharge from the gap simultaneously.
The metallic coil core of the composite membrane that (7) will unclamp is to counter-rotation, and the composite membrane of rolling is tightened up like this, and the slit between each layer disappears.Cut again, check, pack, namely can shipment.
Owing to after transferring to normal temperature, there will be no air release, therefore in order to save the place, at high temperature slaking was just tightly rolled up after 2 days, as long as standing time behind the urgent volume of assurance at normal temperatures was above 7 days.
Useful effect: compared with prior art, production efficiency of the present invention is high, because the high-temperature maturing time was reduced to 2 days from 8 days, can greatly save the production time, and energy savings consumption reduces production costs; Simultaneously, adopt and to loosen coiled material-tighten up the mode of coiled material, can guarantee the homogeneity of product quality, can eliminate the defectives such as color spot that out do not produce owing to air release, the raising product quality.
The specific embodiment
Below in conjunction with specific embodiment, further illustrate the present invention, should understand these embodiment only is used for explanation the present invention and is not used in and limits the scope of the invention, after having read the present invention, those skilled in the art all fall within the application's claims limited range to the modification of the various equivalent form of values of the present invention.
Embodiment 1
One volume PA film (25 microns of thickness) is positioned over first of intaglio plate dry type coating complex machine unreels the place, one rolls of aluminum foil (40 microns of thickness) is positioned over second of dry type coating complex machine unreels the place, adhesive for polyurethane on the PA of dispense tip place film is coated, the machine walking speed is set as 80 m/mins, and oven temperature is set as 60 ℃, 80 ℃, 100 ℃, 120 ℃, 80 ℃.The average thickness of measuring glue-line after the oven dry is 5 microns.Composite pressure is set to 5MPa, temperature is 70 ℃.Through behind the composite roll, obtain the PA-foil laminated film.
One volume PA-foil laminated film is positioned over first of dry type coating complex machine unreels the place, aluminium foil surface is facing to dispense tip; With 25 microns of volume PVC(thickness) be positioned over second of dry type coating complex machine and unreel the place, adhesive for polyurethane on the PA-of dispense tip place foil laminated film is coated, the machine walking speed is set as 80 m/mins, and oven temperature is set as 60 ℃, 80 ℃, 100 ℃, 120 ℃, 80 ℃.The average thickness of measuring glue-line after the oven dry is 5 microns.Composite pressure is set to 8MPa, temperature is 70 ℃.Through behind the composite roll, obtain a volume PA-aluminium foil-PVC composite membrane.
Utilize motor to loosen the operation of coiled material, be put into afterwards in 50 ℃ the drying room and placed 2 days, tighten up again coiled material, just obtain a volume medicinal cold-forming composite aluminum foil (99 microns of average thickness) after 7 days.
Embodiment 2
One volume PA film (25 microns of thickness) is positioned over first of intaglio plate dry type coating complex machine unreels the place, one rolls of aluminum foil (40 microns of thickness) is positioned over second of dry type coating complex machine unreels the place, adhesive for polyurethane on the PA of dispense tip place film is coated, the machine walking speed is set as 100 m/mins, and oven temperature is set as 60 ℃, 80 ℃, 90 ℃, 110 ℃, 80 ℃.The average thickness of measuring glue-line after the oven dry is 8 microns.Composite pressure is set to 5MPa, temperature is 60 ℃.Through behind the composite roll, obtain the PA-foil laminated film.
One volume PA-foil laminated film is positioned over first of dry type coating complex machine unreels the place, aluminium foil surface is facing to dispense tip; With 25 microns of volume PVC(thickness) be positioned over second of dry type coating complex machine and unreel the place, adhesive for polyurethane on the PA-of dispense tip place foil laminated film is coated, the machine walking speed is set as 100 m/mins, and oven temperature is set as 60 ℃, 80 ℃, 90 ℃, 110 ℃, 80 ℃.The average thickness of measuring glue-line after the oven dry is 8 microns.Composite pressure is set to 10MPa, temperature is 60 ℃.Through behind the composite roll, obtain a volume PA-aluminium foil-PVC composite membrane.
Utilize motor to loosen the operation of coiled material, be put into afterwards in 60 ℃ the drying room and placed 2 days, tighten up again coiled material, just obtain a volume medicinal cold-forming composite aluminum foil (104 microns of average thickness) after 7 days.
Embodiment 3
One volume PA film (25 microns of thickness) is positioned over first of intaglio plate dry type coating complex machine unreels the place, one rolls of aluminum foil (40 microns of thickness) is positioned over second of dry type coating complex machine unreels the place, adhesive for polyurethane on the PA of dispense tip place film is coated, the machine walking speed is set as 120 m/mins, and oven temperature is set as 60 ℃, 80 ℃, 100 ℃, 120 ℃, 80 ℃.The average thickness of measuring glue-line after the oven dry is 3 microns.Composite pressure is set to 3MPa, temperature is 65 ℃.Through behind the composite roll, obtain the PA-foil laminated film.
One volume PA-foil laminated film is positioned over first of dry type coating complex machine unreels the place, aluminium foil surface is facing to dispense tip; With 25 microns of volume PVC(thickness) be positioned over second of dry type coating complex machine and unreel the place, adhesive for polyurethane on the PA-of dispense tip place foil laminated film is coated, the machine walking speed is set as 120 m/mins, and oven temperature is set as 60 ℃, 80 ℃, 100 ℃, 120 ℃, 80 ℃.The average thickness of measuring glue-line after the oven dry is 3 microns.Composite pressure is set to 6MPa, temperature is 65 ℃.Through behind the composite roll, obtain a volume PA-aluminium foil-PVC composite membrane.
Utilize motor to loosen the operation of coiled material, be put into afterwards in 55 ℃ the drying room and placed 2 days, then be transferred to normal temperature and place more than 7 days; At last, tighten up coiled material, the metallic coil core of the composite membrane that will unclamp is to counter-rotation, and the composite membrane of rolling is tightened up like this, and the slit between each layer disappears, and namely gets a volume medicinal cold-forming composite aluminum foil (100 microns of average thickness).Cut, check, pack, namely can shipment.
Embodiment 4
One volume PA film (25 microns of thickness) is positioned over first of intaglio plate dry type coating complex machine unreels the place, one rolls of aluminum foil (40 microns of thickness) is positioned over second of dry type coating complex machine unreels the place, adhesive for polyurethane on the PA of dispense tip place film is coated, the machine walking speed is set as 90 m/mins, and oven temperature is set as 60 ℃, 80 ℃, 100 ℃, 120 ℃, 80 ℃.The average thickness of measuring glue-line after the oven dry is 6 microns.Composite pressure is set to 4MPa, temperature is 63 ℃.Through behind the composite roll, obtain the PA-foil laminated film.
One volume PA-foil laminated film is positioned over first of dry type coating complex machine unreels the place, aluminium foil surface is facing to dispense tip; With 25 microns of volume PVC(thickness) be positioned over second of dry type coating complex machine and unreel the place, adhesive for polyurethane on the PA-of dispense tip place foil laminated film is coated, the machine walking speed is set as 90 m/mins, and oven temperature is set as 60 ℃, 80 ℃, 100 ℃, 120 ℃, 80 ℃.The average thickness of measuring glue-line after the oven dry is 6 microns.Composite pressure is set to 7MPa, temperature is 63 ℃.Through behind the composite roll, obtain a volume PA-aluminium foil-PVC composite membrane.
Utilize motor to loosen the operation of coiled material, be put into afterwards in 58 ℃ the drying room and placed 2 days, then be transferred to normal temperature and placed 8 days; At last, tighten up coiled material, the metallic coil core of the composite membrane that will unclamp is to counter-rotation, and the composite membrane of rolling is tightened up like this, and the slit between each layer disappears, and namely gets a volume medicinal cold-forming composite aluminum foil (102 microns of average thickness).Cut, check, pack, namely can shipment.
Adopting the medicinal cold-forming composite aluminum foil of the various embodiments described above preparation to be divided into five-layer structure, is respectively nylon (PA), adhesive, aluminium foil, adhesive and PVC.Because its preparation method is to adopt coating, the compound method of hot pressing, with nylon (PA), aluminium foil, PVC film with two-layer adhesive pressing, slaking forms again, so can greatly reduce the time of high-temperature maturing, enhance productivity, energy savings consumption, reduce production costs; Simultaneously, when high-temperature maturing, adopt and loosen coiled material-tighten up the mode of coiled material, can guarantee the homogeneity of product quality, improve product quality.
Claims (6)
1. the preparation method of a medicinal cold-forming composite aluminum foil is characterized in that may further comprise the steps:
(1) prepare adhesive for polyurethane, solvent is ethyl acetate;
(2) polyurethane coating adhesive on the PA film carries out drying afterwards under 60-120 ℃ temperature conditions, obtain gluing PA film;
(3) gluing PA film and aluminium foil are carried out hot pressing, obtain the PA-foil laminated film;
(4) polyurethane coating adhesive on the aluminium foil surface of PA-foil laminated film, dry under 60-120 ℃ temperature conditions afterwards;
(5) gluing composite membrane and the PVC that obtains in the step (4) carried out hot pressing, obtain PA-aluminium foil-PVC composite membrane;
(6) carry out maturation process: prepare a length and metallic cylinder that the PA-aluminium foil-the PVC composite membrane width is suitable, vertically place, then this composite membrane volume is placed in the middle of the metallic cylinder, evenly firmly rotating metallic is rolled up core, composite membrane is thrown away under the effect of centrifugal force, and it throws away scope and is limited by metallic cylinder; During rolling, the composite membrane that is tightened up is released, the slit occurs between layers; Be rotated further the metallic coil core, until the slit all occurs between every one deck of the composite membrane of entire volume; Then be to place 2 days in 50-60 ℃ the drying room in temperature, be transferred to afterwards normal temperature and place more than 7 days;
The metallic coil core of the composite membrane that (7) will unclamp is to counter-rotation, and the composite membrane of rolling is tightened up like this, and the slit between each layer disappears, and finally obtains medicinal cold-forming composite aluminum foil.
2. the preparation method of medicinal cold-forming composite aluminum foil according to claim 1, it is characterized in that: in the described step (2), dried bondline thickness is the 3-8 micron.
3. the preparation method of medicinal cold-forming composite aluminum foil according to claim 1, it is characterized in that: in the described step (3), when carrying out hot hot pressing, temperature is 60-70 ℃, and pressure is 3-10MPa.
4. the preparation method of medicinal cold-forming composite aluminum foil according to claim 1 is characterized in that: in the described step (4), dry after the thickness of glue-line be the 3-8 micron.
5. the preparation method of medicinal cold-forming composite aluminum foil according to claim 1, it is characterized in that: in the described step (5), when carrying out hot hot pressing, temperature is 60-70 ℃, and pressure is 3-10MPa.
6. the preparation method of medicinal cold-forming composite aluminum foil according to claim 1, it is characterized in that: in the described step (7), the average thickness of the medicinal cold-forming composite aluminum foil that finally obtains is 98 ~ 105 microns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210437432.XA CN102922856B (en) | 2012-11-06 | 2012-11-06 | Method for preparing officinal cold forming composite aluminum foil |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210437432.XA CN102922856B (en) | 2012-11-06 | 2012-11-06 | Method for preparing officinal cold forming composite aluminum foil |
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| CN102922856A true CN102922856A (en) | 2013-02-13 |
| CN102922856B CN102922856B (en) | 2015-05-27 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103538350A (en) * | 2013-10-16 | 2014-01-29 | 江苏真美包装科技有限公司 | Solvent-free cold stamping forming composite membrane production method |
| CN103640280A (en) * | 2013-12-05 | 2014-03-19 | 江苏科技大学 | Method for preparing officinal cold forming composite aluminum foil with high Erichsen value |
| CN104163020A (en) * | 2014-07-11 | 2014-11-26 | 湖北塑金复合材料有限责任公司 | Aluminum alloy sheet material having pre-coating layer |
| CN104163018A (en) * | 2014-07-11 | 2014-11-26 | 湖北塑金复合材料有限责任公司 | Vehicle aluminum alloy sheet material having precoated layer |
| CN105232326A (en) * | 2015-10-10 | 2016-01-13 | 江苏中金玛泰医药包装有限公司 | Outer composite film cover for insertion openings of plastic containers for intravenous injection and manufacturing method |
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| CN201305185Y (en) * | 2008-09-26 | 2009-09-09 | 广东生益科技股份有限公司 | A pallet |
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| JPH1053274A (en) * | 1996-08-07 | 1998-02-24 | Sumitomo Bakelite Co Ltd | Medicine package made of flexible plastic |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103538350A (en) * | 2013-10-16 | 2014-01-29 | 江苏真美包装科技有限公司 | Solvent-free cold stamping forming composite membrane production method |
| CN103538350B (en) * | 2013-10-16 | 2016-04-27 | 江苏真美包装科技有限公司 | A kind of solvent-free cold stamping shaped composite membrane production method |
| CN103640280A (en) * | 2013-12-05 | 2014-03-19 | 江苏科技大学 | Method for preparing officinal cold forming composite aluminum foil with high Erichsen value |
| CN103640280B (en) * | 2013-12-05 | 2016-06-08 | 江苏科技大学 | A kind of preparation method of the Erichsen number medicinal cold-forming composite aluminum foil more than 15mm |
| CN104163020A (en) * | 2014-07-11 | 2014-11-26 | 湖北塑金复合材料有限责任公司 | Aluminum alloy sheet material having pre-coating layer |
| CN104163018A (en) * | 2014-07-11 | 2014-11-26 | 湖北塑金复合材料有限责任公司 | Vehicle aluminum alloy sheet material having precoated layer |
| CN104163018B (en) * | 2014-07-11 | 2016-06-15 | 湖北塑金复合材料有限责任公司 | There is the Aluminum alloy plate for vehicle material of precoated shet |
| CN105232326A (en) * | 2015-10-10 | 2016-01-13 | 江苏中金玛泰医药包装有限公司 | Outer composite film cover for insertion openings of plastic containers for intravenous injection and manufacturing method |
| CN105232326B (en) * | 2015-10-10 | 2018-04-24 | 江苏中金玛泰医药包装有限公司 | A kind of composite membrane outer cover and manufacture method for being used to be injected intravenously plastic containers insert port |
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