CN215512724U

CN215512724U - Composite film for packaging medicine bag blister and package thereof

Info

Publication number: CN215512724U
Application number: CN202121316090.7U
Authority: CN
Inventors: 刘运锦; 贾露; 廖贵何; 林新土; 李智尧; 陈曦
Original assignee: Xiamen Changsu Industrial Co Ltd
Current assignee: Xiamen Changsu Industrial Co Ltd
Priority date: 2021-06-11
Filing date: 2021-06-11
Publication date: 2022-01-14
Anticipated expiration: 2031-06-11

Abstract

The utility model discloses a composite film for packaging a medicine bag blister and a package thereof. The composite film sequentially comprises a PVA (polyvinyl acetate) barrier coating, a shading and impact-resistant polyamide layer, an EVOH (ethylene vinyl alcohol) barrier layer, a PET (polyethylene terephthalate) layer and a CPP (chlorinated polypropylene) heat sealing layer from outside to inside, and a polyurethane bonding layer is arranged between the layers. The composite film disclosed by the utility model adopts a structure that the double barrier layers are arranged at intervals, so that the composite film has excellent barrier property, shading property, impact resistance and stiffness, meets the performance requirements of the composite film for packaging the medicine bag blister, is a pure plastic composite product, is convenient for later-stage recycling and degrading use of the film, solves the problems that the existing aluminum-plastic composite film for the medicine bag is not beneficial to recycling, and has a wide application prospect.

Description

Composite film for packaging medicine bag blister and package thereof

Technical Field

The utility model belongs to the technical field of medicine packaging materials, and particularly relates to a composite film for packaging a medicine bag blister and a package thereof.

Background

The plastic-aluminum blister package of the medicine is also called as a blister package, which is called PTP (Press Through Packaging for short). The packaging form has multiple advantages, firstly, the medicine packaging with one metering is provided for patients, and the packaging form is convenient and economical; and the aluminum-plastic medicine packaging protection medicine has good performance mainly because the aluminum foil has excellent electric conductivity and light shielding performance, and has extremely high moisture resistance, air resistance and fragrance retention performance. However, the aluminum foil has poor extensibility and low depth of 'punching pits' and is easy to break in the process of 'punching pits' of the medicine package bubble cap.

PA// AL// CPP is commonly used in prior art blister packs to increase the "punch-through" depth of the aluminum-plastic blister pack. However, from the environmental protection perspective, the aluminum-plastic composite film is not conducive to recycling and reusing of plastics in the later period. Therefore, a plastic blister packaging composite film with excellent barrier property, light-shielding property, impact resistance and stiffness is still required to be developed to replace the existing aluminum-plastic blister packaging composite film, and the problems that the existing aluminum-plastic composite film for medicine bags is not beneficial to recycling and the like are solved.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art, provides the composite film for packaging the medicine bag blister and the package thereof, and solves the problem of replacing and recycling the aluminum-plastic composite film for the traditional Chinese medicine bag in the background technology.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the composite film for packaging the medicine bag bubble cap sequentially comprises a PVA (polyvinyl acetate) barrier coating, a shading and anti-impact polyamide layer, an EVOH (ethylene vinyl alcohol) barrier layer, a PET (polyethylene terephthalate) layer and a CPP (chlorinated polypropylene) heat sealing layer from top to bottom, and a polyurethane bonding layer is arranged between the layers.

In a preferred embodiment of the present invention, the material of the PVA barrier coating layer is a water-resistant modified PVA coating material.

In a preferred embodiment of the utility model, the PVA barrier coating has a thickness of 1-3 μm.

In a preferred embodiment of the present invention, the light-shielding and impact-resistant polyamide layer is a polyamide film containing black colorant.

In a preferred embodiment of the present invention, the light-shielding and impact-resistant polyamide layer has a thickness of 15-25 μm.

In a preferred embodiment of the present invention, the thickness of the EVOH barrier layer is 10-15 μm.

In a preferred embodiment of the present invention, the thickness of the PET layer is 15-25 μm.

In a preferred embodiment of the utility model, the thickness of the CPP heat sealing layer is 30-60 μm.

The utility model also provides a medicine package blister package which adopts the composite film for the medicine package blister package.

In a preferred embodiment of the utility model, the packaging film comprises a foaming base material and a covering material, wherein the foaming base material and the covering material adopt the composite film for packaging the medicine package blister, and a medicine containing groove is formed by the side where the CPP heat sealing layer is located and sinking towards the direction of the PVA barrier coating.

Compared with the background technology, the technical scheme has the following advantages:

1. according to the scheme, the PVA barrier coating and the EVOH barrier layer are arranged, the double barrier layers ensure that the composite film has excellent and reliable barrier performance and aroma-keeping performance, and the barrier film has better folding resistance and no natural defects such as pinholes and the like compared with an aluminum foil; the shading and impact-resistant polyamide layer is arranged, so that excellent pit punching performance and shading performance are provided; set up the PET layer, provide better stiffness, set up CPP heat-seal layer, provide excellent heat-seal effect. The layers can be bonded through a polyurethane glue layer, and better bonding strength is provided.

2. The compound film of cartridge bag bubble cap of this scheme possesses excellent separation performance, shading performance, shock resistance and deflection, satisfies cartridge bag bubble cap packing with compound film's performance demand, and simultaneously, this compound film is pure plastics composite product, and the recovery of the later stage film of being convenient for degrades the use, solves current aluminium-plastic composite film for the cartridge bag and is unfavorable for recycle scheduling problem, possesses wide application prospect.

Drawings

FIG. 1 is a layer structure view of a composite film for blister packaging of drug packs.

Wherein, the coating comprises a 10-PVA barrier coating layer and a 20-shading and impact-resistant polyamide layer; 30-EVOH barrier layer, 40-PET layer and 50-CPP heat sealing layer.

Detailed Description

It is to be understood that the terms "upper", "lower", and the like, are used in an orientation or positional relationship indicated in the drawings for convenience in describing the present invention and simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention. The terms "inner" and "outer" are based on the film as a packaged state, the "inner" means a side close to the content, and the "outer" means a side far from the content.

Example 1

In the embodiment, the composite film for packaging the medicine bag blister is sequentially provided with a PVA barrier coating layer 10, a shading and impact-resistant polyamide layer 20, an EVOH barrier layer 30, a PET layer 40 and a CPP heat-sealing layer 50 from outside to inside; the layers are bonded through a polyurethane bonding layer.

The thickness of the PVA barrier coating layer 10 is 2 micrometers, the thickness of the shading and impact-resistant polyamide layer 20 is 15 micrometers, the thickness of the EVOH barrier layer 30 is 15 micrometers, the thickness of the PET layer 40 is 15 micrometers, and the thickness of the CPP heat sealing layer 50 is 30 micrometers; the thickness of the polyurethane bonding layer between the layers is 1 μm.

The PVA barrier coating 10 is prepared from the existing water-resistant modified PVA coating material, the embodiment adopts the water-resistant modified PVA coating disclosed in CN110774713A, namely 'a coating type high-barrier bidirectional stretched polylactic acid film and a preparation method thereof', and the high-barrier coating still has good barrier effect under the condition of being thin;

the shading and impact-resistant polyamide layer 20 is prepared from the existing black polyamide material with modified impact resistance, the core layer material disclosed in CN110564142A, namely black matte polyamide film for lithium battery outer packaging and a preparation method thereof, is composed of polyamide, a toughening agent and an organic black coloring agent, and has excellent impact resistance and shading effect;

the EVOH barrier layer 30 is prepared by adopting the existing polyethylene-vinyl alcohol copolymer material on the market; the PET layer 40 is prepared by the existing ethylene terephthalate material on the market; the CPP heat-sealing layer is prepared from the existing polypropylene material on the market.

Example 2

Example 2 differs from example 1 in that: the thickness of the PVA barrier coating layer 10 is 1 μm, the thickness of the shading and impact-resistant polyamide layer 20 is 25 μm, the thickness of the EVOH barrier layer 30 is 10 μm, the thickness of the PET layer 40 is 20 μm, and the thickness of the CPP heat sealing layer 50 is 50 μm; the thickness of the polyurethane bonding layer between the layers is 2 μm.

Example 3

A medicine package blister package comprises a foaming base material and a covering material, wherein the composite film of the embodiment 1 is adopted, and the foaming base material is formed in a manner that a CPP heat sealing layer 50 is arranged on the side of the foaming base material and is sunken towards the direction of a PVA barrier coating 10 to form a medicine containing groove. The composite film has excellent blocking performance, shading performance, impact resistance and stiffness, meets the performance requirements of the composite film for packaging the medicine bag blister, is a pure plastic composite product, is convenient for later-stage film recovery and degradation, solves the problems that the existing aluminum-plastic composite film for the medicine bag is not beneficial to recycling and the like, and has wide application prospect.

The composite film for packaging the medicine bag blister is provided with the PVA barrier coating and the EVOH barrier layer, the double barrier layers ensure that the composite film has excellent and reliable barrier performance and aroma-keeping performance, and the barrier film has better folding resistance and no natural defects such as pinholes and the like relative to an aluminum foil; the shading and impact-resistant polyamide layer is arranged and comprises the following components in parts by mass: 60-90 parts of polyamide, 5-10 parts of toughening agent and 0.5-2 parts of black coloring agent, and can provide excellent pit punching performance and shading performance; set up the PET layer, provide better stiffness, set up CPP heat-seal layer, provide excellent heat-seal effect. The layers can be bonded through a polyurethane glue layer, and better bonding strength is provided.

When the thickness of the PVA barrier coating layer 10 is 1-3 μm, the thickness of the impact-resistant polyamide layer 20 is 15-25 μm, the thickness of the EVOH barrier layer 30 is 10-15 μm, the thickness of the PET layer 40 is 15-25 μm, and the thickness of the CPP heat-sealing layer 50 is 30-60 μm; when the thickness of the polyurethane bonding layer between the layers is 1-2 mu m, the cost performance of the film is higher, namely the thickness of the composite film is as thin as possible on the premise of ensuring the mechanical property, antistatic property, separation property and heat sealing property of the film so as to reduce the production cost, so that the film is more economical and practical and meets the market demand.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A composite film for packaging a medicine package blister is characterized in that: the light-shading and impact-resistant composite material sequentially comprises a PVA (polyvinyl acetate) barrier coating, a light-shading and impact-resistant polyamide layer, an EVOH (ethylene vinyl alcohol) barrier layer, a PET (polyethylene terephthalate) layer and a CPP (chlorinated polypropylene) heat sealing layer from top to bottom, and a polyurethane bonding layer is arranged between the layers.

2. The composite film for blister pack packaging according to claim 1, wherein: the PVA barrier coating is made of a water-resistant modified PVA coating.

3. The composite film for blister pack packaging according to claim 1, wherein: the thickness of the PVA barrier coating is 1-3 mu m.

4. The composite film for blister pack packaging according to claim 1, wherein: the thickness of the shading and impact-resistant polyamide layer is 15-25 mu m.

5. The composite film for blister pack packaging according to claim 1, wherein: the thickness of the EVOH barrier layer is 10-15 μm.

6. The composite film for blister pack packaging according to claim 1, wherein: the thickness of the PET layer is 15-25 μm.

7. The composite film for blister pack packaging according to claim 1, wherein: the thickness of the CPP heat sealing layer is 30-60 mu m.

8. A blister pack comprising a package body comprising: use of a blister pack packaging composite film according to any of claims 1 to 7.

9. A blister pack according to claim 8, wherein: the CPP heat-sealing coating comprises a foaming base material and a covering material, wherein the foaming base material is formed by sinking a CPP heat-sealing layer to the direction of a PVA (polyvinyl acetate) barrier coating to form a medicine containing groove.