CN102152542B

CN102152542B - Medical packaging film

Info

Publication number: CN102152542B
Application number: CN 201010571553
Authority: CN
Inventors: 江继忠; 鲍祖本; 潘健; 吴志刚; 吴云腾
Original assignee: Huangshan Novel Co Ltd
Current assignee: Huangshan Novel Co Ltd
Priority date: 2010-12-03
Filing date: 2010-12-03
Publication date: 2013-10-16
Anticipated expiration: 2030-12-03
Also published as: CN102152542A

Abstract

The invention discloses a medical packaging film which sequentially comprises a printing layer, a mixed functional polyethylene layer, an aluminum foil layer and a heat sealing layer from exterior to interior. Compared with the prior art, the medical packaging film disclosed by the invention does not use an adhesive, thereby reducing the residuals of a solvent and reducing the pollution on medicines and the environment; simultaneously, the separation performance and the cost control are combined; the medical packaging film has the advantages of good separation effect and long quality guarantee period; the cost is reduced by 15-30%; resources are saved; and the heat sealing temperature can be controlled to be 100-110 DEG C.

Description

Medicine packaging film

Technical field

The invention belongs to medicine packaging film, belong to especially the medicine packaging film of environmental protection.

Background technology

In the medical packaging material, the past is more with the glassware packing, along with the development of science and technology, makes fast progress with aluminium foil and plastic composite packaging material in recent years.The safety and sanitation of medicine the life and health direct and people is of close concern to each other, and therefore selecting suitable packaging material is one of controlling units of ensuring drug quality.The barrier property of packaging material is key factors of impact packing effect.Rotten main cause occurs many packing content things is because moisture and oxygen are attacked, and chance visible light and microorganism and the physiological metabolism of himself cause.Moisture makes microbial reproduction, and oxygen makes content oxidation, rotten, and some medicines are met visible light then can decomposition failure.Excellent in barrier property, the content of guarantee packing keeps its original characteristic not change; Barrier is bad, and it is rotten that moisture in the packing content thing air amount and oxygen are caused, or sees and light reaction cause loss of drug potency, the impact that the dissolvent residual of packaging film also can be certain on the mass formation of medicine simultaneously.

Summary of the invention

Technical problem to be solved by this invention provides the medicine packaging film of the few environmental protection of a kind of dissolvent residual.

The technical scheme of technical solution problem of the present invention is: medicine packaging film is followed successively by printed layers, mixed function type polyethylene layer, aluminium foil layer, hot sealing layer from outside to inside.

In the described mix polyethylene layer, comprise low density polyethylene (LDPE), ethylene-acrylic acid copolymeric material, white master batch, its weight ratio is 75～100: 20～40: 8～12.

Described hot sealing layer is sarin and metallocene PE coextruded layer, and the metallocene PE layer is between aluminium lamination, sarin layer.

Preferred packaging film is followed successively by 12 μ m pet film layers, 12 μ m mixed function type polyethylene layers, 7 μ m aluminium foil layers, 15 μ m metallocene PE layers, 8 μ m sarin layers from outside to inside.

The aluminium foil that adopts among the present invention; 7 μ m aluminium foils particularly; because of its thinner thickness and the characteristic of itself; when being subject to external force and involving; easily fracture, so the mixed function type polyethylene layer by being provided with between aluminium lamination and printed layers utilizes the pliability of PE material effectively to protect AL; prevent that AL from easily crisp easily broken problem occuring, avoided AL because of the barrier property of the problems affect such as fracture and breakage to product.Because aluminium foil contains certain pore, low density polyethylene (LDPE), ethylene-acrylic acid copolymeric material, white master batch mix when extruding, and above-mentioned composite is squeezed in the pore of aluminium foil, is integral with bonding foil, has improved the barrier of aluminium foil.Simultaneously, by in milking white PE, mixing a certain proportion of polar material ethylene-acrylic acid copolymeric material EAA5050, the situation that does not go up viscoelastic polyurethane gum deposit water can solve the peel strength extruded between compound latter two interface (〉=1.5N/15mm), owing to do not have the glue solvent discharging, realized environmentally friendly technique; By in the mix polyethylene layer, increasing white master batch, when polyethylene terephtalate film printing pattern, reduce white edition and use (chromatic number that has reduced printing), thus the discharging of saving the use of white ink and improving printing efficiency, minimizing solvent.

The present invention adopts the Mitsui chemistry to squeeze replica low temperature metallocene PE SP1071C and sarin particle co-extrusion, and metallocene PE layer can well merge with the sarin layer again with AL is well bonding, greatly reduces cost when guaranteeing product quality.

The present invention compared with prior art, do not use adhesive, thereby reduced the residual of solvent, reduce the pollution of medicine and environment, simultaneously, barrier property and cost control are combined, barriering effect is good, long shelf-life, cost 15%-30%, having saved resource, heat-sealing temperature can be 100-110 ℃ of control.

Description of drawings

Fig. 1 is structural representation of the present invention.

Fig. 2 is preparation method's of the present invention technological process.

As shown in Figure 1: 1 is that PETG layer, 2 is that mix polyethylene layer, 3 is that aluminium lamination, 4 is that metallocene PE layer, 5 is the sarin layer.

The specific embodiment

The present invention is described in detail below in conjunction with embodiment.

The raw material that the present invention is used: PETG (PET)

The key technical indexes:

AL (aluminium foil) the key technical indexes:

Project	Index
		Thickness (μ m)	7
Thickness deviation %	±10
		The joint number, individual	≤1
The pure aluminum foil pinhole number, individual/m ²	≤1

PE resin the key technical indexes:

Functional resin

Embodiment 1

Medicine packaging film is followed successively by printed layers 1, mix polyethylene layer 2, aluminium lamination 3, hot sealing layer from outside to inside, and described hot sealing layer is metallocene PE layer 4, sarin layer 5 mixed layer, and metallocene PE layer 4 is between aluminium lamination 3, sarin layer 5.

Preparation method of the present invention is:

(1) printing: in the print production workshop, the temperature that controls environment is printed the PET print film between 20-30 ℃ by intaglio press;

(2) Double-mold-head is extruded compound: PET is placed a position of putting, AL (aluminium foil) places two to put, with low density polyethylene (LDPE) 1C7A, ethylene-acrylic acid copolymeric material EAA5050, white master batch UF880, its weight ratio is to add in screw rod at 75: 25: 10, extrude with the form of mixture after fully mixing and PET and AL between.In other two screw rods, a screw rod adds metallocene PE SP1071C (Mitsui chemistry), add the sarin particle in another screw rod, PET/ mixing PE/AL volume film proceeds under the die head by tractive force, PE, sarin are squeezed in the above, the 12 μ m PET/12 μ m mixing PE/7 μ m AL/ that form squeeze the composite membrane of 15 μ m PE/8 μ m sarins, then rolling.

Embodiment 2:

Except low density polyethylene (LDPE) 1C7A, ethylene-acrylic acid copolymeric material EAA5050, white master batch UF880, its weight ratio is 100: 20: 12, and all the other are identical with embodiment 1 outward.

Embodiment 3:

Except low density polyethylene (LDPE) 1C7A, ethylene-acrylic acid copolymeric material EAA5050, white master batch UF880, its weight ratio is 90: 30: 8, and all the other are identical with embodiment 1 outward.

The technical indicator of embodiments of the invention 1 is as follows:

Claims

1. medicine packaging film is characterized in that: be followed successively by from outside to inside printed layers, mixed function property polyethylene layer, aluminium foil layer, hot sealing layer;

Described printed layers is the PETG layer;

In the described mixed function property polyethylene layer, comprise low density polyethylene (LDPE), ethylene-acrylic acid copolymeric material, white master batch, its weight ratio is 75 ~ 100:20 ~ 40:8 ~ 12;

Described hot sealing layer is sarin and metallocene PE coextruded layer, and the metallocene PE layer is between aluminium foil layer, sarin layer.

2. medicine packaging film according to claim 1, it is characterized in that: described packaging film is followed successively by 12 μ m PETG layers, 12 μ m mixed function type polyethylene layers, 7 μ m aluminium foil layers, 15 μ m metallocene PE layers, 8 μ m sarin layers from outside to inside.