CN211280027U

CN211280027U - Medicinal attenuate lightweight packaging composite film

Info

Publication number: CN211280027U
Application number: CN201921633863.7U
Authority: CN
Inventors: 李俊; 伍秋涛; 林武辉
Original assignee: Suzhou Haishun Packaging Material Co ltd
Current assignee: Suzhou Haishun Packaging Material Co ltd
Priority date: 2019-09-27
Filing date: 2019-09-27
Publication date: 2020-08-18
Anticipated expiration: 2029-09-27

Abstract

The utility model discloses a medicinal thinning lightweight packaging composite film, which is provided with a mechanical strength layer, a transparent barrier layer, a printing ink layer, an adhesive layer, an evaporation barrier layer, a low-crystallinity polypropylene resin layer, a strength support layer and a heat sealing layer in sequence from top to bottom; wherein the transparent barrier layer is a silicon dioxide layer or an aluminum oxide layer, and the evaporation barrier layer is a vacuum evaporation aluminum layer. The present case provides a medicinal attenuate lightweight packaging composite film.

Description

Medicinal attenuate lightweight packaging composite film

Technical Field

The utility model belongs to the packaging material field, in particular to medicinal attenuate lightweight packaging composite membrane.

Background

The package plays an important role in the processes of commodity transportation and sale. However, at present, the over-packaging behavior of the commodities becomes a trend, the value of some commodities is possibly not enough, and most of packaging materials are not reusable, so that the garbage amount and the garbage treatment cost are increased, and the great social resource waste is caused. Some packaging materials also have a negative impact on the environment, causing significant environmental problems.

The reduction is realized by changing the functions of the parts of the traditional packaging system to reduce the amount of the external packaging, and unnecessary material repetition and waste are avoided. It saves the use of materials from the source and also reduces the amount of waste from the source. It can be said that the reduction is the prevailing trend in packaging design.

For example, two composite film structures of PET/VMPET/PE and PET/AL/PE are mostly used in the market at present, the thickness of the inner layer PE is about 45 mu, the thickness of the inner layer PE is increased to 100 mu in order to improve the stiffness of the composite film, the thickness of the inner layer PE is actually increased, the barrier function of a package is not helped, the aluminum foil is a metal material, the density is 2.73gsm and is 2-3 times of that of common plastics, the aluminum foil cannot be recycled after compounding, and the resource consumption is serious.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that to the not enough among the above-mentioned prior art, provide a medicinal attenuate lightweight packaging composite membrane.

In order to solve the technical problem, the utility model discloses a technical scheme is: a medical thinning lightweight packaging composite film is sequentially provided with a mechanical strength layer, a transparent barrier layer, a printing ink layer, an adhesive layer, an evaporation barrier layer, a low-crystallinity polypropylene resin layer, a strength supporting layer and a heat sealing layer from top to bottom;

wherein the transparent barrier layer is a silicon dioxide layer or an aluminum oxide layer; and

the evaporation blocking layer is a vacuum evaporation aluminum layer.

Preferably, the mechanical strength layer is a biaxially oriented polyester film having a thickness of 12 μm.

Preferably, the thickness of the transparent barrier layer is

Preferably, the printing ink layer is a polyurethane system ink layer, and the thickness of the printing ink layer is 1-3 mu m.

Preferably, the adhesive layer is a two-component polyurethane adhesive layer with the thickness of 2.5-3.5 μm.

Preferably, the thickness of the vapor deposition barrier layer is set to

Preferably, the low-crystallinity polypropylene resin layer is a biaxially stretched, copolymerized propylene copolymer resin layer having a thickness of 5 μm.

Preferably, the strength support layer is a biaxially stretched homo-polypropylene resin layer having a thickness of 15 μm.

Preferably, the heat-sealing layer is a low-melting-point copolymerized propylene layer.

The utility model has the advantages that: the composite film is provided with the transparent barrier layer and the vacuum evaporation aluminum layer, the double barrier layers replace the traditional aluminum foil barrier material, the heat sealing layer is low-melting-point co-polypropylene, the heat sealing layer and the low-crystallinity polypropylene resin layer are co-extruded with the strength support layer to form a biaxial stretching layer structure, and the modulus and stiffness of the material are improved by times compared with those of the blow molding heat sealing layer, so that the total thickness of the composite film is about 40 mu m, the square gram weight of the composite film is about 35gsm, and the thickness and weight of the composite film are reduced by about half compared with those of the common three-layer aluminum foil composite film (such as a PET12/AL7/PE50 composite film, the total.

Drawings

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

Description of reference numerals:

1-a mechanical strength layer; 2-a transparent barrier layer; 3-printing an ink layer; 4-an adhesive layer; 5-evaporating a barrier layer; 6-a low crystallinity polypropylene resin layer; 7-strength support layer; 8-heat sealing layer.

Detailed Description

The present invention is further described in detail below with reference to examples so that those skilled in the art can implement the invention with reference to the description.

As shown in fig. 1, the present embodiment provides a pharmaceutical thinning and lightweight packaging composite film, which sequentially comprises a mechanical strength layer 1, a transparent barrier layer 2, a printing ink layer 3, an adhesive layer 4, an evaporation barrier layer 5, a low-crystallinity polypropylene resin layer 6, a strength support layer 7, and a heat seal layer 8 from top to bottom;

wherein the transparent barrier layer 2 is a silicon dioxide layer or an aluminum oxide layer with a thickness of

It acts as a high barrier; and

the evaporation barrier layer 5 is a vacuum evaporation aluminum layer with the thickness of

It acts as a non-vapor barrier. Under the structure, the double barrier layers replace the traditional aluminum foil barrier material, and the thickness of the barrier layers of the composite film is greatly reduced under the condition of ensuring the water vapor barrier property of the composite film. The most used composite film structures in the market at present are two composite film structures of PET/VMPET/PE and PET/AL/PE, the thickness of the inner layer PE is about 45 mu, the thickness of the inner layer PE is increased to 100 mu for improving the stiffness of the composite film, the thickness of the inner layer PE is actually increased, the barrier function of the package is not helped, the aluminum foil is made of a metal material, the density is 2.73gsm and is 2-3 times of that of common plastic, the aluminum foil cannot be recycled after compounding, and the resource consumption is serious. Through the arrangement of the application, the effect that can be obtained is not much different from that of the existing design, but the thickness and the weight of the two are greatly different. Namely, the water vapor barrier property of the prior composite film is ensuredThe total thickness and the unit square meter gram weight of the film in the application are more than half of those of the film designed in the prior art, so that the reduction of the medicine package material is realized.

Wherein the mechanical strength layer 1 is a biaxially oriented polyester film having a thickness of 12 μm, which has good heat resistance and excellent tensile strength, does not deform during processing, and can increase the temperature of a heat sealing ironing knife during high-speed packaging to increase the packaging speed.

Wherein, the printing ink layer 3 is polyurethane system ink with the thickness of 1-3 μm and plays a role of decorating patterns.

The adhesive layer 4 is a two-component polyurethane adhesive, which can provide good adhesion to the composite film laminate.

Wherein, the thickness of the adhesive layer 4 is 2.5-3.5 μm. The thickness of the adhesive layer 4 should be limited, and if the thickness of the adhesive layer is less than 2.5 μm, the adhesive performance is reduced; if the thickness is more than 3.5 μm, the shrinkage stress of the adhesive layer after curing will be increased, and the risk of adhesive overflow is increased.

Wherein, the low-crystallinity polypropylene resin layer 6 is a biaxial stretching binary copolymer propylene resin layer, keeps low crystallinity after biaxial stretching, improves the adhesive force with the evaporation barrier layer 5, and has the thickness of 5 μm.

The strength support layer 7 is a biaxially stretched homo-polypropylene resin layer, and the elasticity modulus is improved after biaxial stretching, and the thickness is 15 μm.

The heat sealing layer 8 is low-melting-point copolymerized propylene, and after the copolymerized propylene is co-extruded with the low-crystallinity polypropylene resin layer 6 and the strength supporting layer 7 and is subjected to biaxial stretching, the heat sealing layer still has good heat sealing performance due to low molecular arrangement orientation, and although the heat sealing strength is lower than that of a common three-layer medicine package composite film, the heat sealing layer can meet the performance requirement of most small-dose medicine packages.

The following table shows barrier properties of the composite film tested at different thicknesses; wherein, the water vapor transmission capacity is measured by an infrared method, and the oxygen transmission capacity is measured by a pressure difference method.

Can discover through above-mentioned contrast when thickness reaches certain thickness, the increase of water vapor permeability and oxygen permeability barrier property promptly is not obvious, learns through last table moreover that the thickness of same barrier property this application membrane is about half of PET/VMPET/PE complex film/PET/AL PE complex film thickness, and the membrane of this application is satisfying under the prerequisite of barrier property requirement promptly, and thickness, weight all reduce greatly.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

While the embodiments of the invention have been disclosed above, it is not limited to the applications listed in the description and the embodiments, which are fully applicable in all kinds of fields where the invention is suitable, and further modifications may readily be made by those skilled in the art, and the invention is therefore not limited to the specific details without departing from the general concept defined by the claims and the scope of equivalents.

Claims

1. A medicinal thinning lightweight packaging composite film is characterized in that a mechanical strength layer, a transparent barrier layer, a printing ink layer, an adhesive layer, an evaporation barrier layer, a low-crystallinity polypropylene resin layer, a strength support layer and a heat sealing layer are sequentially arranged from top to bottom;

the evaporation blocking layer is a vacuum evaporation aluminum layer.

2. The pharmaceutical thinning and lightweight packaging composite film as claimed in claim 1, wherein the mechanical strength layer is a biaxially oriented polyester film having a thickness of 12 μm.

3. The pharmaceutical thinning and lightweight packaging composite film as claimed in claim 1, wherein the thickness of the transparent barrier layer is

4. The pharmaceutical thinning and lightweight packaging composite film according to claim 1, wherein the printing ink layer is a polyurethane system ink layer with a thickness of 1-3 μm.

5. The medicinal thinning and lightweight packaging composite film according to claim 1, wherein the adhesive layer is a two-component polyurethane adhesive layer with a thickness of 2.5-3.5 μm.

6. The pharmaceutical thinning and lightweight packaging composite film as claimed in claim 1, wherein the thickness of the evaporation barrier layer is

7. The pharmaceutical thinning and lightweight packaging composite film as claimed in claim 1, wherein the low crystallinity polypropylene resin layer is a biaxially oriented binary copolymerized propylene resin layer with a thickness of 5 μm.

8. The pharmaceutical thinning and lightweight packaging composite film as claimed in claim 1, wherein the strength support layer is a biaxially oriented homo-polypropylene resin layer with a thickness of 15 μm.

9. The pharmaceutical thinning and lightweight packaging composite film as claimed in claim 1, wherein the heat sealing layer is a low melting point co-polypropylene layer.