High-temperature-resistant water vapor composite film, sealing adhesive tape and identification label

Abstract

The utility model discloses a high-temperature-resistant water vapor composite film, a sealing adhesive tape and an identification label. The composite film comprises a polysulfone polymer film layer with the thickness of 15-75 microns, a bonding layer with the thickness of 3-7 microns and a release layer with the thickness of 8-12 microns. According to the high-temperature-resistant water vapor composite film provided by the utility model, the polysulfone polymer film layer with the thickness of 15-75 microns is used as the basic film layer, so that the high-temperature resistance and high-temperature water vapor resistance of the composite film can be effectively improved; a high-temperature-resistant water vapor binder is adopted as the bonding layer, so that the composite film can be used for a long time in a high-temperature water vapor environment; the release layer is additionally arranged, so that the bonding layer can be effectively protected; the sealing adhesive tape and the identification label are formed by cutting the composite film, so that the sealing adhesive tape has good high-temperature resistance and high-temperature water vapor resistance.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of high temperature water vapor resistant film, especially to a high temperature water vapor resistant composite film, sealing tape and identification label. BACKGROUND

[0002] The connecting part of pipeline and joint etc. is usually sealed by sealing tape made of biaxially oriented polyester (BOPET) film, and when the pipeline is applied to high temperature liquid or steam transportation, the sealing tape made of BOPET film is not resistant to high temperature and high temperature water vapor, and long-term use will cause deformation, and the sealing performance is reduced, causing pipeline leakage. In addition, in the prior art, many devices or apparatuses that need high temperature water vapor for disinfection and sterilization are generally made of BOPET film, and the high temperature water vapor resistant property is poor, and after long-term use, it is also easy to deform or even fall off. Therefore, the field urgently needs a high temperature water vapor resistant film, sealing tape and identification label made of the same, especially sealing tape for connecting part of high temperature liquid or steam transportation and identification label for high temperature water vapor disinfection and sterilization equipment. SUMMARY

[0003] The technical problem to be solved by the utility model is to provide a high temperature water vapor resistant composite film, sealing tape and identification label, which are resistant to high temperature and high temperature water vapor and suitable for preparing high temperature water vapor resistant sealing tape and identification label.

[0004] To solve the above technical problem, the first aspect of the utility model provides a high temperature water vapor resistant composite film, comprising:

[0005] A polysulfone-based polymer film layer with a thickness of 15-75 μm;

[0006] A release layer with a thickness of 8-12 μm;

[0007] An adhesive layer with a thickness of 3-7 μm;

[0008] The total thickness of the composite film is 30-80 μm.

[0009] Preferably, the thickness of the polysulfone-based polymer film layer is 20-30 μm, preferably 25 μm; and the total thickness of the composite film is 30-50 microns.

[0010] Preferably, the thickness of the polysulfone-based polymer film layer is 35-65 μm, preferably 50 μm; and the total thickness of the composite film is 50-80 microns.

[0011] Preferably, the release layer is a biaxially oriented polyethylene film layer.

[0012] Preferably, the adhesive layer is one or more of a silicone adhesive, a polyacrylic resin adhesive, a polyurethane adhesive, and a moisture-cured sealant.

[0013] Preferably, the polysulfone-based polymer film layer side material is polysulfone.

[0014] Preferably, the polysulfone-based polymer film layer side material is polyphenylsulfone.

[0015] Preferably, the polysulfone-based polymer film layer side material is polyethersulfone.

[0016] To solve the above technical problems, the second aspect of the utility model provides a sealing tape prepared from the aforementioned high-temperature water vapor resistant composite film. Understandably, since the sealing tape is made of the high-temperature water vapor resistant composite film, it at least has all the beneficial effects of the high-temperature water vapor resistant composite film. When the sealing tape is applied to the joint sealing of a pipe conveying high-temperature liquid or steam, it is not easy to deform in a high-temperature and high-temperature water vapor environment, thereby playing a good sealing role. It should be noted that when the sealing tape is prepared from the aforementioned high-temperature water vapor resistant composite film, it can be simply cut. The preferred thickness of the sealing tape is 30-50 microns.

[0017] To solve the above technical problems, the third aspect of the utility model provides a label prepared from the aforementioned high-temperature water vapor resistant composite film. Understandably, since the label is made of the high-temperature water vapor resistant composite film, it at least has all the beneficial effects of the high-temperature water vapor resistant composite film. When the label is applied to a high-temperature water vapor disinfection and sterilization device, it is not easy to deform and fall off in a high-temperature and high-temperature water vapor environment, thereby playing a good labeling role. It should be noted that when the label is prepared from the aforementioned high-temperature water vapor resistant composite film, it can be simply cut. The preferred thickness of the label is 50-80 microns.

[0018] The high-temperature water vapor resistant composite film provided by the utility model can effectively improve the high-temperature and high-temperature water vapor resistance of the composite film by adopting a 15-75 mu m polysulfone-based polymer film layer as a basic film layer. The use of a high-temperature water vapor resistant adhesive as an adhesive layer is more conducive to the long-term use of the composite film in a high-temperature water vapor environment. The addition of a release layer can effectively protect the adhesive layer. BRIEF DESCRIPTION OF DRAWINGS

[0019] To more clearly illustrate the technical solutions of the utility model, the following briefly introduces the drawings needed to be used by the utility model. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor.

[0020] Figure 1 is a schematic diagram of a membrane layer structure of an embodiment of the high-temperature-resistant water vapor composite membrane of the utility model;

[0021] In the figure, 1-poly sulfone polymer film layer; 2-adhesion layer; 3-release layer. DETAILED DESCRIPTION

[0022] The technical solutions in the utility model will be clearly and completely described below with reference to the drawings. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0023] Embodiment 1

[0024] Reference Figure 1 , a high-temperature-resistant water vapor composite membrane of the utility model is shown, which comprises:

[0025] The poly sulfone polymer film layer has a thickness of 15-75 μm;

[0026] The release layer has a thickness of 8-12 μm;

[0027] The adhesion layer has a thickness of 3-7 μm;

[0028] The total thickness of the composite membrane is 30-80 μm.

[0029] In the utility model embodiment, the high-temperature resistant water vapor composite film can be prepared by coating and gluing process, which can be realized by the prior art, and thus will not be repeated here. The high-temperature resistant water vapor composite film provided by the utility model has the following advantages: the polysulfone polymer has excellent mechanical properties, high-temperature resistance, flame resistance, high modulus, corrosion resistance, high-temperature water vapor resistance, and is widely used in high-end fields such as electronic appliances and aerospace. The polysulfone polymer is used as the base film layer of the composite film, which can effectively improve the high-temperature resistance and high-temperature water vapor resistance of the composite film. The release layer mainly protects the adhesive layer and prevents the adhesive layer from being contaminated. The release layer also has water vapor barrier properties, which can effectively alleviate the curing of the adhesive and prolong the service life. The adhesive layer mainly has adhesive properties, such as adhesion to the surface of equipment and adhesion to the interface of pipes. Since the composite film of the utility model is applied to a high-temperature water vapor environment, the adhesive layer is preferably made of a high-temperature resistant water vapor adhesive. In the high-temperature resistant water vapor composite film provided by the utility model, the polysulfone polymer film layer and the adhesive layer cooperate to realize long-term use of the composite film in a high-temperature water vapor environment of 180℃ without deformation. In the utility model embodiment, the thickness of the polysulfone polymer film layer is preferably 15-75 microns. A thickness lower than 15 microns cannot achieve good high-temperature resistance, and a thickness higher than 75 microns will make the total thickness of the composite film too large, which is not conducive to subsequent use. The thickness of the release layer is preferably 5-12 microns. When the thickness is lower than 5 microns, the release layer cannot effectively protect the adhesive layer. When the thickness is higher than 12 microns, the total thickness of the composite film will be too large, which is not conducive to subsequent use. The thickness of the adhesive layer is preferably 3-7 microns. When the thickness is lower than 3 microns, the adhesive effect is poor, which is not conducive to long-term use. When the thickness is higher than 7 microns, the total thickness of the composite film will be too large, which is not conducive to subsequent use.

[0030] In a specific embodiment, the release layer is a biaxially stretched polyethylene film layer. Understandably, biaxially stretched polyethylene film is inexpensive and can effectively protect the adhesive layer. Without wishing to be bound by this, biaxially stretched PET can also be applied to the utility model, but its water vapor barrier properties are not as good as those of biaxially stretched polyethylene film.

[0031] In a specific embodiment, the polysulfone polymer film layer is made of polysulfone, polyphenylsulfone, or polyethersulfone. Understandably, polysulfone, polyphenylsulfone, and polyethersulfone all have excellent high-temperature water vapor resistance, and thus are suitable for application in the present application.

[0032] Example 2

[0033] The high-temperature resistant water vapor composite film prepared in Example 1 is directly cut to obtain a sealing tape, preferably with a thickness of 30-50 microns and a width determined according to the application scenario.

[0034] Example 3

[0035] The high-temperature resistant water vapor composite film prepared in Example 1 is directly cut to obtain a sealing tape, preferably with a thickness of 50-80 microns, and a length and width determined according to the application scenario.

[0036] The above merely describes preferred embodiments of the present application and is not intended to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A high temperature steam resistant composite membrane, characterized in that: include: Polysulfone polymer film layer, with a thickness of 15-75 μm; Release layer, the thickness of which is 8-12 μm; Adhesive layer, having a thickness of 3-7 μm; The total thickness of the composite film is 30-80 μm.

2. The high temperature steam resistant composite membrane according to claim 1, characterized in that The thickness of the polysulfone polymer film layer is 20-30 μm; The total thickness of the composite film is 30-50 microns.

3. The high temperature steam resistant composite membrane according to claim 1, wherein The thickness of the polysulfone polymer film layer is 35-65 μm; The total thickness of the composite film is 50-80 microns.

4. The high temperature resistant water vapor composite membrane according to any one of claims 1 to 3, characterized in that: The release layer is a biaxially oriented polyethylene film layer.

5. The high temperature resistant water vapor composite membrane according to any one of claims 1 to 3, characterized in that: The material of the polysulfone polymer film layer is polysulfone.

6. The high temperature resistant water vapor composite membrane according to any one of claims 1 to 3, characterized in that: The material of the polysulfone polymer film layer is polyphenylsulfone.

7. The high temperature resistant water vapor composite membrane according to any one of claims 1 to 3, characterized in that: The material of the polysulfone polymer film layer is polyethersulfone.

8. A sealing tape prepared from the high-temperature steam-resistant composite film according to any one of claims 1 to 3.

9. An identification label prepared from the high-temperature water vapor resistant composite film according to any one of claims 1 to 3.

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