Polytrifluorochloroethylene composite film and packaging bag

Abstract

The utility model discloses a polytrifluorochloroethylene composite film and a packaging bag, and the polytrifluorochloroethylene composite film comprises a polytrifluorochloroethylene layer which is provided with a polytrifluorochloroethylene film; the first polyurethane glue layer is arranged below the polytrifluorochloroethylene layer; the second polyurethane glue layer is arranged below the polytrifluorochloroethylene layer; the co-extrusion film is arranged below the first polyurethane glue layer; the second polyurethane glue layer is arranged below the co-extrusion film; and the polyvinyl chloride layer is arranged below the second polyurethane glue layer. The barrier property is also improved while the interface peel strength is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to hospital packaging technical field especially, it is a kind of polytrifluorochloroethylene composite film and packing bag. BACKGROUND

[0002] Polytrifluorochloroethylene composite film is mainly applied in the packaging of medicine and electronic product, the interface adhesion of existing polytrifluorochloroethylene composite film and ordinary sheet is poor, easy to appear interface separation phenomenon and then make oxygen barrier property reduce, lead to packaging failure.

[0003] How to solve the above technical problems has become the technical problem that the industry urgently needs to solve. SUMMARY

[0004] In order to at least solve the above technical problems, the utility model aims at providing a kind of polytrifluorochloroethylene composite film, interface peeling strength is improved while also improving barrier property.

[0005] In order to achieve the above purpose, the polytrifluorochloroethylene composite film provided by the present application comprises:

[0006] Polytrifluorochloroethylene layer, polytrifluorochloroethylene layer is equipped with polytrifluorochloroethylene film;

[0007] First polyurethane glue layer, first polyurethane glue layer is laid below polytrifluorochloroethylene layer;

[0008] Co-extrusion film, co-extrusion film is laid below first polyurethane glue layer;

[0009] Second polyurethane glue layer, second polyurethane glue layer is laid below co-extrusion film;

[0010] Polyvinyl chloride layer, polyvinyl chloride layer is laid below second polyurethane glue layer.

[0011] Further, co-extrusion film includes: first polyethylene film layer, ethylene-vinyl alcohol copolymer layer and second polyethylene film layer;

[0012] Ethylene-vinyl alcohol copolymer layer is arranged between first polyethylene film layer and second polyethylene film layer.

[0013] Further, co-extrusion film is first polyethylene film layer, ethylene-vinyl alcohol copolymer layer and second polyethylene film layer are extruded by extruder.

[0014] Further, the die temperature of extruder extruding co-extrusion film is 215-250 degrees Celsius.

[0015] Further, co-extrusion film is used for oxygen barrier.

[0016] Further, the polytrifluorochloroethylene layer is used for blocking water vapor.

[0017] Further, the first polyurethane adhesive layer comprises polyurethane adhesive.

[0018] The polyurethane adhesive is solvent-free polyurethane and / or water-based polyurethane.

[0019] Further, the second polyurethane adhesive layer comprises polyurethane adhesive.

[0020] The polyurethane adhesive is solvent-free polyurethane and / or water-based polyurethane.

[0021] Further, the thickness of the polytrifluorochloroethylene layer is 51 microns.

[0022] The thickness of the first polyurethane adhesive layer and the second polyurethane adhesive layer is 3-4 microns.

[0023] The thickness of the first polyethylene film layer and the second polyethylene film layer is 21-24.5 microns.

[0024] The thickness of the ethylene-vinyl alcohol copolymer layer is 6-7 microns.

[0025] To achieve the above-mentioned purpose, the packaging bag provided by the application comprises the above-mentioned polytrifluorochloroethylene composite film.

[0026] The polytrifluorochloroethylene composite film provided by the application comprises a polytrifluorochloroethylene layer, a first polyurethane adhesive layer, a co-extrusion film, a second polyurethane adhesive layer, and a polyvinyl chloride layer. BRIEF DESCRIPTION OF DRAWINGS

[0027] The accompanying drawings are used to provide a further understanding of the application, and constitute a part of the specification, and together with the embodiments of the application, are used to explain the application, and do not constitute a limitation on the application. In the drawings:

[0028] Figure 1 FIG. 1 is a structural schematic diagram of the polytrifluorochloroethylene composite film according to the embodiments of the application.

[0029] Explanation of reference signs:

[0030] 101 - a layer of polytrifluorochloroethylene; 102 - a first layer of polyurethane glue; 103 - a first layer of polyethylene film; 104 - a layer of ethylene-vinyl alcohol copolymer; 105 - a second layer of polyethylene film; 106 - a second layer of polyurethane glue; 107 - a layer of polyvinyl chloride. DETAILED DESCRIPTION

[0031] Embodiments of the present application will be described in more detail with reference to the drawings. While certain embodiments of the application are shown in the drawings, it is understood that the application can be embodied in various forms and should not be construed as being limited to the embodiments set forth in the drawings, but rather the embodiments are provided to fully convey the full scope of the application. It is understood that the drawings of the present application are for illustrative purposes only and are not intended to limit the scope of the present application.

[0032] It is understood that the various steps of the method embodiments of the present application can be performed in different orders and / or in parallel. Furthermore, the method embodiments can include additional steps and / or omit performing the steps shown. The scope of the present application is not limited in this respect.

[0033] The term "comprising" and variations thereof as used herein are open-ended, that is "including but not limited to". The term "based on" is "based, at least in part, on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Related terms are defined in the following description.

[0034] It is noted that the use of "a", "an", "the" and similar referents in the application are intended to be illustrative of the application and are not intended to be limiting. It will be understood by those skilled in the art that, although the present application has been described in connection with specific embodiments, it is presented as a generic example of the application and the application is not limited to the specific references made to it during the course of this description. It will be appreciated that the scope of the application is not limited to the specific embodiments described herein, but includes any alternatives, modifications, additions or omissions within the scope of the application described by the appended claims.

[0035] Embodiments of the present application will be described in more detail with reference to the drawings. While certain embodiments of the application are shown in the drawings, it is understood that the application can be embodied in various forms and should not be construed as being limited to the embodiments set forth in the drawings, but rather the embodiments are provided to fully convey the full scope of the application. It is understood that the drawings of the present application are for illustrative purposes only and are not intended to limit the scope of the present application.

[0036] The present application provides a polytrifluorochloroethylene composite film, comprising:

[0037] The polytrifluorochloroethylene layer is provided with a polytrifluorochloroethylene film.

[0038] The first polyurethane glue layer is arranged below the polytrifluorochloroethylene layer.

[0039] The co-extruded film is arranged below the first polyurethane glue layer.

[0040] The second polyurethane glue layer is arranged below the co-extruded film.

[0041] A polyvinyl chloride layer is disposed below the second polyurethane adhesive layer.

[0042] Embodiment 1

[0043] Figure 1 is a schematic diagram of a polytrifluorochloroethylene composite film structure of the present embodiment, and the following will be described in detail Figure 1 , the polytrifluorochloroethylene composite film of the present embodiment.

[0044] In an exemplary embodiment, the polytrifluorochloroethylene composite film of the present embodiment comprises a polytrifluorochloroethylene layer 101.

[0045] In an exemplary embodiment, the polytrifluorochloroethylene layer 101 is provided with a polytrifluorochloroethylene film.

[0046] In an exemplary embodiment, the polytrifluorochloroethylene composite film of the present embodiment further comprises a first polyurethane adhesive layer 102.

[0047] In an exemplary embodiment, the polytrifluorochloroethylene is (Polytrifluorochloroethylene, abbreviated as PCTFE).

[0048] In an exemplary embodiment, the polytrifluorochloroethylene is a polymer of trifluorochloroethylene, with a melting temperature of 213°C, excellent chemical stability, insulation and weather resistance, and can be used for a long time at -196-125°C. The film has good transparency and low air permeation rate.

[0049] In an exemplary embodiment, among all plastics, the water vapor permeability of PCTFE is the lowest, and it does not permeate any gas, which is a good barrier polymer; PCTFE also has good weather resistance, and it still has no effect on performance after being exposed to sunlight outdoors for one year.

[0050] In an exemplary embodiment, in the present case, the excellent water vapor barrier performance of the polytrifluorochloroethylene layer 101 is utilized.

[0051] In an exemplary embodiment, the first polyurethane adhesive layer 102 is disposed below the polytrifluorochloroethylene layer 101, for example, the first polyurethane adhesive layer 102 is attached to the lower surface of the polytrifluorochloroethylene layer 101.

[0052] In an exemplary embodiment, the first polyurethane adhesive layer 102 comprises polyurethane adhesive.

[0053] In an exemplary embodiment, the polyurethane adhesive is a self-solvent type polyurethane and / or water-based polyurethane.

[0054] In an exemplary embodiment, the polytrifluorochloroethylene composite film of the present application further comprises a co-extruded film.

[0055] In an exemplary embodiment, the co-extruded film is disposed below the first polyurethane adhesive layer 102, for example, the co-extruded film is attached to the lower surface of the first polyurethane adhesive layer 102.

[0056] In an exemplary embodiment, the polytrifluorochloroethylene composite film of the present application further comprises a second polyurethane adhesive layer 106.

[0057] In an exemplary embodiment, the second polyurethane adhesive layer 106 is disposed below the co-extruded film, for example, the second polyurethane adhesive layer 106 is attached to the lower surface of the co-extruded film.

[0058] In an exemplary embodiment, the second polyurethane adhesive layer 106 comprises a polyurethane adhesive.

[0059] In an exemplary embodiment, the polyurethane adhesive is a self-solvent type polyurethane and / or a water-based polyurethane.

[0060] In an exemplary embodiment, the first polyurethane adhesive layer 102 and the second polyurethane adhesive layer 106 can be the same type of polyurethane adhesive or different types of polyurethane adhesive according to the needs, of course, they can also be composed of two types of polyurethane adhesive, for example, the first polyurethane adhesive layer 102 is composed of a layer of self-solvent type polyurethane adhesive and a layer of water-based polyurethane adhesive.

[0061] In an exemplary embodiment, the polytrifluorochloroethylene composite film of the present application further comprises a polyvinyl chloride layer 107.

[0062] In an exemplary embodiment, the polyvinyl chloride layer 107 is disposed below the second polyurethane adhesive layer 106, for example, the polyvinyl chloride layer 107 is attached to the lower surface of the second polyurethane adhesive layer 106.

[0063] In an exemplary embodiment, the polyvinyl chloride layer comprises a polyvinyl chloride film.

[0064] In an exemplary embodiment, the polyvinyl chloride (Polyvinyl chloride, abbreviated as PVC).

[0065] In an exemplary embodiment, the co-extruded film comprises a first polyethylene film layer 103, an ethylene-vinyl alcohol copolymer layer 104, and a second polyethylene film layer 105.

[0066] In an exemplary embodiment, the ethylene-vinyl alcohol copolymer layer 104 comprises an ethylene-vinyl alcohol copolymer.

[0067] In an exemplary embodiment, the ethylene-vinyl alcohol copolymer, also known as EVOH, has excellent blocking effect on gas, odor, perfume, solvent, etc.

[0068] In an exemplary embodiment, the ethylene-vinyl alcohol copolymer layer 104 is arranged between the first polyethylene film layer 103 and the second polyethylene film layer 105; that is, the first polyethylene film layer 103 is attached to the lower surface of the first polyurethane adhesive layer 102, and the second polyethylene film layer 105 is attached to the upper surface of the second polyurethane adhesive layer 106.

[0069] In an exemplary embodiment, the co-extruded film is formed by co-extruding the first polyethylene film layer 103, the ethylene-vinyl alcohol copolymer layer 104, and the second polyethylene film layer 105 through an extruder.

[0070] In an exemplary embodiment, the die temperature of the extruder for extruding the co-extruded film is 215-250 degrees Celsius.

[0071] In an exemplary embodiment, the co-extruded film is used for blocking oxygen.

[0072] In an exemplary embodiment, the thickness of the polytrifluorochloroethylene layer is 51 microns; the thickness of the first polyurethane adhesive layer and the second polyurethane adhesive layer is 3-4 microns; the thickness of the first polyethylene film layer and the second polyethylene film layer is 21-24.5 microns; and the thickness of the ethylene-vinyl alcohol copolymer layer is 6-7 microns.

[0073] Example 2

[0074] Example 2 is a pharmaceutical packaging bag.

[0075] In an exemplary embodiment, the pharmaceutical packaging bag of the present application is used for packaging of pharmaceutical products.

[0076] In an exemplary embodiment, the pharmaceutical packaging bag of the present application comprises the polytrifluorochloroethylene composite film of the above-mentioned embodiments, which takes advantage of the excellent water vapor and oxygen barrier properties of the polytrifluorochloroethylene composite film, improves the sealing environment of the pharmaceutical products, and ensures the safety of the use period of the pharmaceutical products.

[0077] Example 3

[0078] Example 3 is an electronic product packaging bag comprising the polytrifluorochloroethylene composite film of the above-mentioned embodiments.

[0079] Although the embodiments disclosed by the utility model are as above, the content is only the adopted embodiment for facilitating understanding of the utility model, and is not used to limit the utility model. Any person skilled in the art of the utility model can make any modification and change on the implementation form and details without departing from the spirit and range of the utility model disclosed, but the patent protection range of the utility model still needs to be limited by the range defined by the attached claim.

Claims

1. A polytrifluorochloroethylene composite film, characterized by, It comprises: a polytrifluorochloroethylene layer provided with a polytrifluorochloroethylene film; a first polyurethane adhesive layer arranged below the polytrifluorochloroethylene layer; a co-extruded film arranged below the first polyurethane adhesive layer; a second polyurethane adhesive layer arranged below the co-extruded film; a polyvinyl chloride layer arranged below the second polyurethane adhesive layer.

2. The polytrifluorochloroethylene composite film according to claim 1, characterized by, The co-extruded film comprises a first polyethylene film layer, an ethylene-vinyl alcohol copolymer layer, and a second polyethylene film layer. The ethylene-vinyl alcohol copolymer layer is arranged between the first polyethylene film layer and the second polyethylene film layer.

3. The polytrifluorochloroethylene composite film according to claim 2, characterized by The co-extruded film is formed by co-extrusion of the first polyethylene film layer, the ethylene-vinyl alcohol copolymer layer, and the second polyethylene film layer by an extruder.

4. The polytrifluorochloroethylene composite film according to claim 3, characterized by The temperature of the die of the extruder for extruding the co-extruded film is 215-250 degrees Celsius.

5. The polytrifluorochloroethylene composite film according to claim 1, characterized by The co-extruded film is used for blocking oxygen.

6. The polytrifluorochloroethylene composite film according to claim 1, characterized by The polytrifluorochloroethylene layer is used for blocking water vapor.

7. The polytrifluorochloroethylene composite film according to claim 1, characterized by The first polyurethane adhesive layer comprises polyurethane adhesive. The polyurethane adhesive is solvent-borne polyurethane and / or waterborne polyurethane.

8. The polytrifluorochloroethylene composite film according to claim 1, characterized by The second polyurethane adhesive layer comprises polyurethane adhesive. The polyurethane adhesive is solvent-borne polyurethane and / or waterborne polyurethane.

9. The polytrifluorochloroethylene composite film according to claim 2, characterized by The thickness of the polytrifluorochloroethylene layer is 51 microns. The thickness of the first polyurethane adhesive layer and the second polyurethane adhesive layer is 3-4 microns. The thickness of the first polyethylene film layer and the second polyethylene film layer is 21-24.5 microns. The thickness of the ethylene-vinyl alcohol copolymer layer is 6-7 microns.

10. A package, characterized in that The polytrifluorochloroethylene composite film of any one of claims 1-9 is included.

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