A kind of seven-layer co-extrusion intravenous medicine packaging composite film
Technical field:
This utility model is a kind of used composite membrane of intravenous medicine packaging bag of making, and belongs to the renovation technique of the used composite membrane of intravenous medicine packaging bag.
Background technology:
The intravenous medicine packing container that generally uses at present is vial, the shortcoming of its existence is not only easily broken, the inconvenience transportation, and the storage volume is big, and in use owing to need constantly to introduce air in medicinal liquid, dust in air, microorganism are easy to cause the pollution once more of medicinal liquid.For this reason, external most of fine plastic bottle and plastic bag of adopting is as the intravenous medicine packing container, but the used composite membrane of its plastic packaging bag is to adopt flexible PVC (PVC) to make, because PVC will add various auxiliary agents in the course of processing, micromolecule auxiliary agent migration and PVC self with the chlorine element make it from being worked into removal process, the capital discharges harmful components, is detrimental to health.Other has some composite membranes is to adopt non-PVC to make, but its combination property is all not good enough, and some composite membrane is bad to the high barrier of water vapour, and some is that pliability is not good enough, and some is that high temperature-resistant disinfected performance is undesirable.
The utility model content:
The purpose of this utility model is to overcome above-mentioned shortcoming and provides a kind of not only without any side effects to flow of infusate, and water vapour, oxygen, nitrogen had high barrier, have good practicality and pliability, has outstanding high temperature-resistant disinfected performance, good comprehensive properties seven-layer co-extrusion intravenous medicine packaging composite film.
The structural representation of this utility model composite membrane cross section as shown in Figure 1, the cross section of composite membrane includes polypropylene layer (1) from the internal layer of contact flow of infusate successively to the skin that contacts with air, copolymerization of ethylene layer (2), metallocene pvdf layer (3), first adhesive linkage (4), evoh layer (5), second adhesive linkage (6), copolyester layer (7), bonding between metallocene pvdf layer (3) and the evoh layer (5) by first adhesive linkage (4), bonding between evoh layer (5) and the copolyester layer (7) by second adhesive linkage (6).
The gross thickness of above-mentioned polypropylene layer (1), copolymerization of ethylene layer (2), metallocene pvdf layer (3), first adhesive linkage (4), evoh layer (5), second adhesive linkage (6), copolyester layer (7) is 170 μ m~225 μ m.
The thickness of above-mentioned polypropylene layer (1) is 17 μ m~21 μ m.
The thickness of above-mentioned copolymerization of ethylene layer (2) is 12 μ m~15 μ m.
The thickness of above-mentioned metallocene pvdf layer (3) is 102 μ m~126 μ m.
The thickness of above-mentioned first adhesive linkage (4) is 12 μ m~15 μ m.
The thickness of above-mentioned evoh layer (5) is 12 μ m~15 μ m.
The thickness of above-mentioned second adhesive linkage (6) is 12 μ m~15 μ m.
The thickness of above-mentioned copolyester layer (7) is 17 μ m~21 μ m.
The cross section of this utility model composite membrane includes polypropylene layer from the internal layer of contact flow of infusate successively to the skin that contacts with air; the copolymerization of ethylene layer; the metallocene pvdf layer; first adhesive linkage; evoh layer; second adhesive linkage; the structure of copolyester layer; the internal layer polypropylene layer provides the outstanding protectiveness to flow of infusate; without any side effects; the copolymerization of ethylene layer is mainly used in polypropylene layer and metallocene pvdf layer is bonded together; the metallocene pvdf layer provides outstanding obstruct water vapour; oxygen; the function of nitrogen; first adhesive linkage is mainly used in metallocene pvdf layer and evoh layer is bonded together; evoh layer provides the function of outstanding blocking oxygen; second adhesive linkage is mainly used in evoh layer and copolyester layer is bonded together, and copolyester layer provides outstanding high temperature-resistant disinfected performance.Not only without any side effects with the intravenous medicine packaging bag that this utility model is made to flow of infusate, water vapour, oxygen, nitrogen had high barrier, and can damp and hot sterilization under 121 ℃ condition, also can adopt the gamma ray sterilization, and in subzero 40 ℃ to 121 ℃ very wide serviceability temperature scopes, have good practicality and pliability, and be totally enclosed infusion model, avoid the pollution once more in the infusion process.The intravenous medicine packaging bag of making of this utility model meets the every chemical property and the biology performance index of intravenous medicine packaging bag, can be used for packing venous transfusions such as saline, glucose, dialysis solution, flushing liquor, parenteral alimentation liquid, extraordinary curative.
Description of drawings:
Fig. 1 is the structural representation of this utility model composite membrane cross section.
The specific embodiment:
Embodiment 1:
The structural representation of this utility model seven-layer co-extrusion intravenous medicine packaging composite film cross section as shown in Figure 1, the cross section of composite membrane includes polypropylene layer (1) from the internal layer of contact flow of infusate successively to the skin that contacts with air, copolymerization of ethylene layer (2), metallocene pvdf layer (3), first adhesive linkage (4), evoh layer (5), second adhesive linkage (6), copolyester layer (7), bonding between metallocene pvdf layer (3) and the evoh layer (5) by first adhesive linkage (4), bonding between evoh layer (5) and the copolyester layer (7) by second adhesive linkage (6).
The gross thickness of above-mentioned polypropylene layer (1), copolymerization of ethylene layer (2), metallocene pvdf layer (3), first adhesive linkage (4), evoh layer (5), second adhesive linkage (6), copolyester layer (7) is 170 μ m~225 μ m.
The thickness of above-mentioned polypropylene layer (1) is 17 μ m~21 μ m.In the present embodiment, the thickness of polypropylene layer (1) is 17 μ m.
The thickness of above-mentioned copolymerization of ethylene layer (2) is 12 μ m~15 μ m.In the present embodiment, the thickness of copolymerization of ethylene layer (2) is 12 μ m.
The thickness of above-mentioned metallocene pvdf layer (3) is 102 μ m~126 μ m.In the present embodiment, the thickness of metallocene pvdf layer (3) is 102 μ m.
The thickness of above-mentioned first adhesive linkage (4) is 12 μ m~15 μ m.In the present embodiment, the thickness of first adhesive linkage (4) is 12 μ m.
The thickness of above-mentioned evoh layer (5) is 12 μ m~15 μ m.In the present embodiment, the thickness of evoh layer (5) is 12 μ m.
The thickness of above-mentioned second adhesive linkage (6) is 12 μ m~15 μ m.In the present embodiment, the thickness of second adhesive linkage (6) is 12 μ m.
The thickness of above-mentioned copolyester layer (7) is 17 μ m~21 μ m.In the present embodiment, the thickness of copolyester layer (7) is 17 μ m.
In the present embodiment, the gross thickness that this utility model seven-layer co-extrusion intravenous medicine packaging composite film is seven layers is 170 μ m.
Employing is multi-layer co-extruded blow moulding production in 10,000 grades of cleaning shops, thereby guarantee that internal layer and medicine contact layer are all the time under 100 grades purification protection.
Embodiment 2:
The structure of this utility model composite membrane cross section is identical with embodiment 1, difference is that the thickness of above-mentioned polypropylene layer (1) is 21 μ m, the thickness of copolymerization of ethylene layer (2) is 15 μ m, the thickness of metallocene pvdf layer (3) is 126 μ m, the thickness of first adhesive linkage (4) is 15 μ m, the thickness of evoh layer (5) is 12 μ m, and the thickness of second adhesive linkage (6) is 15 μ m, and the thickness of copolyester layer (7) is 21 μ m.
In the present embodiment, the gross thickness that this utility model seven-layer co-extrusion intravenous medicine packaging composite film is seven layers is 225 μ m.
Embodiment 3:
The structure of this utility model composite membrane cross section is identical with embodiment 1, difference is that the thickness of polypropylene layer (1) is 18 μ m, the thickness of copolymerization of ethylene layer (2) is 14 μ m, the thickness of metallocene pvdf layer (3) is 115 μ m, the thickness of first adhesive linkage (4) is 14m, the thickness of evoh layer (5) is 11 μ m, and the thickness of second adhesive linkage (6) is 13 μ m, and the thickness of copolyester layer (7) is 19 μ m.
In the present embodiment, the gross thickness that this utility model seven-layer co-extrusion intravenous medicine packaging composite film is seven layers is 204 μ m.