CN215592982U

CN215592982U - High-barrier drug bag composite film

Info

Publication number: CN215592982U
Application number: CN202121968385.2U
Authority: CN
Inventors: 魏广富; 王芳生; 张长生; 刘拥军; 周志彬; 奚成海; 张斌; 郭春锋
Original assignee: Anyang Hua Qiang Packaging Industry Co ltd
Current assignee: Anyang Hua Qiang Packaging Industry Co ltd
Priority date: 2021-08-20
Filing date: 2021-08-20
Publication date: 2022-01-21
Anticipated expiration: 2031-08-20

Abstract

The utility model discloses a high-barrier drug package composite film which sequentially comprises an anti-counterfeiting protective layer, a first adhesive layer, an aluminum foil base layer, a second adhesive layer and a hot melting layer from top to bottom, wherein the anti-counterfeiting protective layer is a laser holographic anti-counterfeiting BOPP film, the hot melting layer is an EVOH hot melting adhesive film, and the first adhesive layer and the second adhesive layer are both chitin fiber-doped modified polyurethane adhesive layers. The composite film has excellent external water vapor oxygen high barrier property, stronger tear resistance and anti-counterfeiting effect, and excellent comprehensive performance when used for medicine packaging.

Description

High-barrier drug bag composite film

Technical Field

The utility model particularly relates to a high-barrier drug package composite film, and belongs to the technical field of medicinal packaging composite materials.

Background

In recent years, flexible packaging materials including PTP aluminum foils have been widely used in the fields of medicines, health products, foods, and the like. The packaging requirements for the medicines meet the requirements of no toxicity, no odor, no harm to human bodies, good moisture resistance, good air tightness, good heat insulation effect, good permeation resistance and the like, the existing medicine aluminum foil is not very good in tear resistance, and is often easy to break in the actual use process, so that the medicines are oxidized to cause the medicine failure, and particularly, for some packaging medicine materials which seal the medicines only by the medicine aluminum foil, the medicine aluminum foil is broken due to vibration or slight external force extrusion in the transportation process, so that the stability of the medicine quality is influenced, and the storage and storage period of the medicines is greatly shortened. Therefore, the composite packaging material containing the aluminum foil is researched, so that the composite packaging material has good mechanical property, high gas barrier property and certain anti-counterfeiting property, and plays an important role in ensuring the quality stability of the gas-sensitive medicine.

Disclosure of Invention

Aiming at the problems in the prior art, the utility model provides a high-barrier medicine package composite film, aiming at improving the mechanical property and the barrier property of the composite film.

The technical scheme of the utility model is as follows: the high-barrier medicine bag composite film sequentially comprises an anti-counterfeiting protective layer, a first adhesive layer, an aluminum foil base body layer, a second adhesive layer and a hot melt layer from top to bottom, wherein the anti-counterfeiting protective layer is a laser holographic anti-counterfeiting BOPP film, the hot melt layer is an EVOH hot melt adhesive film, and the first adhesive layer and the second adhesive layer are modified polyurethane adhesive layers doped with chitin fibers.

Further, the thickness of the laser holographic anti-counterfeiting BOPP film is 30-50 microns.

Further, the thickness of the aluminum foil substrate layer is 35-65 microns.

Further, the thickness of the hot melt adhesive layer is 30-60 microns.

Further, the length of the chitin fibers in the first bonding layer and the second bonding layer is 5-10 mm.

The utility model has the beneficial effects that: by adopting the composite technology of the aluminum foil and the laser holographic anti-counterfeiting BOPP film, the BOPP film has superior mechanical properties such as high tensile strength, high elastic modulus, good rigidity and the like, is nontoxic and tasteless, is suitable for medicine packaging, has excellent moisture barrier property, and can be molded on the BOPP film by the laser holographic image so as to have good anti-counterfeiting property; the aluminum foil has excellent opacity and oxygen barrier property, and can fully protect the medicine; the chitin fibers with specific lengths are uniformly arranged in the bonding layer between the aluminum foil and the BOPP, so that the tear resistance of the whole composite film is further improved; and finally, EVOH is adopted as a hot-melt adhesive layer, so that the whole composite film has excellent heat-sealing processing performance.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

The labels in the figure are: 1, laser holographic anti-counterfeiting BOPP film; 2. a first adhesive layer; 3. an aluminum foil substrate layer, 4, a second adhesive layer, 5 a hot melt layer, 21 and chitin fiber.

Detailed Description

Specific embodiments of the present invention are further described below in order to facilitate a complete understanding of the present invention, by referring to the accompanying drawings.

As shown in figure 1, the high-barrier drug package composite film sequentially comprises a laser holographic anti-counterfeiting BOPP film 1, a first adhesive layer 2, an aluminum foil base body layer 3, a second adhesive layer 4 and a hot melt layer 5 from top to bottom, wherein the hot melt layer is an EVOH hot melt adhesive film, and the first adhesive layer and the second adhesive layer are chitin-doped modified polyurethane adhesive layers.

BOPP is short for biaxially oriented polypropylene, the laser holographic anti-counterfeiting BOPP film 1 is positioned on the outermost layer when being packaged and used, is in contact with air, mainly has the functions of transparent protection and water vapor barrier, and plays a role in toughness protection of the outermost layer, and the thickness of the BOPP layer is 30-50 microns, preferably 35 microns.

The main advantages of BOPP are as follows: the BOPP has good mechanical property, excellent mechanical properties such as high tensile strength, high elastic modulus, good rigidity and the like, and outstanding extensibility and bending fatigue resistance; the BOPP film has good sanitation, no toxicity, no odor and no odor, and is suitable for packaging food and medicines; the BOPP film has good moisture resistance, the water absorption rate is less than 0.01 percent, the moisture barrier performance is excellent, and meanwhile, the laser holographic image can be molded on the BOPP film, so that the BOPP film not only has strong decorative effect, but also has good anti-counterfeiting performance, and plays an increasingly greater role in the field of anti-counterfeiting packaging.

BOPP layer 1 and aluminium foil substrate layer 3 bond together through first adhesive linkage 2, bond together through second adhesive linkage 4 between aluminium foil substrate layer 3 and the hot melt layer 5, adhesive linkage 2 and 4 all adopt alcohol-waterborne polyurethane modified polyacrylate adhesive coating to form, what it discharged when drying is nontoxic alcohol-water mixed gas, the shortcoming of current non-environmental protection adhesive has been overcome, the good comprehensive performance of this medicinal aluminium foil has been kept simultaneously again, the production technology quality grade of this medicinal aluminium foil product has been promoted, good environmental protection modification effect has been obtained.

Meanwhile, chitin fibers 21 are uniformly mixed and distributed in the bonding layers 2 and 4, the titer of the chitin fibers 21 is 2-3dtex, and the length of the chitin fibers is 5-10 mm. The chitin fiber has the characteristics of excellent tensile strength, biocompatibility, degradability, spinnability and the like, and when the chitin fiber is applied to the composite film, the tear resistance and the environmental protection performance of the whole composite film are obviously improved.

The aluminum foil substrate layer 3 is hard aluminum foil formed by rolling or soft aluminum foil processed by annealing, has good surface adhesion, provides almost zero complete barrier performance for medicines such as oxygen and water vapor transmission amount, and has a thickness of 35-65 microns, preferably 45 microns.

The hot-melt layer 5 is a hot-melt adhesive film of EVOH, which is an ethylene-vinyl alcohol copolymer having excellent processability and thermal stability and exhibiting excellent barrier effect against gases, odors, perfumes, solvents, etc., and has a thickness of 30 to 60 μm, preferably 45 μm. When in packaging, the surface is softened under the action of the temperature of the heat seal hot knife, so that wetting adhesion is generated on corresponding blister materials such as PVC, PP, PET and the like, and reliable heat seal strength and sealing property are formed after the blister materials are cooled and solidified.

The manufacturing process of the composite film is as follows: the composite film is prepared by spraying a first polyurethane adhesive 2 on an aluminum foil 3, then compositely adhering the aluminum foil 3 with a BOPP film 1 with a prepared anti-counterfeiting mark, spraying a second polyurethane adhesive layer 4 on the other side of the aluminum foil 3, then covering an EVOH hot-melt adhesive layer 5 on the aluminum foil, and performing hot-pressing, drying and curing.

Claims

1. A high-barrier medicine package composite film is characterized in that: from the top down includes anti-fake protective layer, first adhesive linkage, aluminium foil base member layer, second adhesive linkage, hot melt layer in proper order, anti-fake protective layer is the holographic anti-fake BOPP membrane of laser, the hot melt layer is EVOH hot melt adhesive linkage, first adhesive linkage and second adhesive linkage are chitin fibre doped's modified polyurethane adhesive linkage.

2. The high-barrier drug package composite film according to claim 1, wherein: the thickness of the laser holographic anti-counterfeiting BOPP film is 30-50 microns.

3. The high-barrier drug package composite film according to claim 1, wherein: the thickness of the aluminum foil substrate layer is 35-65 microns.

4. The high-barrier drug package composite film according to claim 1, wherein: the thickness of the hot melt layer is 30-60 microns.

5. The high-barrier drug package composite film according to claim 1, wherein: the length of the chitin fiber in the first bonding layer and the second bonding layer is 5-10 mm.