Carpet double-sided tape for aviation
By introducing a multi-layer structure and a flame-retardant pressure-sensitive adhesive layer into PET double-sided tape, the problems of tape detachment and flame retardancy are solved, achieving high adhesion and simplified construction, thus meeting the requirements of aerospace applications.
Patent Information
- Application Number
- CN202520195336.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-07
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-02-07
AI Technical Summary
Existing PET double-sided tapes have adhesive that is prone to peeling off, cannot meet aviation flame retardant standards, are difficult to apply, and cannot accurately distinguish between the more tacky sides.
It adopts a multi-layer structure design, including release paper, a first flame-retardant pressure-sensitive adhesive layer, a PET substrate, a base coating layer, and a second flame-retardant pressure-sensitive adhesive layer. Different colored flame-retardant pressure-sensitive adhesive layers and base coating layers are used to increase adhesion and flame-retardant properties. The PET substrate is designed with a serrated shape to facilitate tearing.
It improves the adhesive strength and flame retardant properties of the tape, reduces delamination, meets aviation standards, and simplifies the construction process.
Smart Images
Figure CN223879665U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to adhesive product technical field especially, relates to a carpet double -sided tape for aviation. BACKGROUND
[0002] The carpet double -sided tape is made by coating two layers of pressure sensitive adhesive on PET substrate, and the PET has excellent creep resistance, fatigue resistance, friction resistance and dimensional stability, so that the tape can have certain tensile strength after coating the pressure sensitive adhesive. It is commonly used as a carpet double -sided tape, which is an aviation special tape. The PET-based double -sided tape structure on the market currently coats one layer of acrylic pressure sensitive adhesive on the PET substrate, and the other side is obtained by transfer coating.
[0003] The double -sided tape on the market is prone to delamination due to the adhesive coating degree, and the adhesive on the A and B sides has a smaller adhesive force on the PET than the cohesive force of the adhesive. The A and B sides of the double -sided tape are the same color, and it is difficult to distinguish which side has a larger adhesive force during construction. In addition, the PET double -sided tape on the market is prepared in the form of slitting to prepare a small roll, and the PET substrate is hard and not easy to tear, which increases the construction difficulty. At the same time, the PET double -sided tape on the market uses ordinary adhesive, which cannot meet the aviation flame retardant standard.
[0004] Therefore, the prior art still needs to be improved and developed. INVENTION CONTENTS
[0005] In view of the above problems of the prior art, the purpose of the present application is to provide a carpet double -sided tape for aviation, which solves the problem of easy delamination of the adhesive on the existing PET double -sided tape and cannot meet the aviation flame retardant standard.
[0006] The technical scheme of the utility model is as follows:
[0007] A carpet double -sided tape for aviation, comprising, from bottom to top, release paper, first flame -retardant pressure sensitive adhesive layer, PET substrate, primer layer and second flame -retardant pressure sensitive adhesive layer.
[0008] The carpet double -sided tape for aviation, wherein the material of the first flame -retardant pressure sensitive adhesive layer is selected from one of acrylic pressure sensitive adhesive, rubber pressure sensitive adhesive and silicone pressure sensitive adhesive; and the material of the second flame -retardant pressure sensitive adhesive layer is selected from one of acrylic pressure sensitive adhesive, rubber pressure sensitive adhesive and silicone pressure sensitive adhesive.
[0009] The carpet double -sided tape for aviation, wherein the thickness of the first flame -retardant pressure sensitive adhesive layer is 100 μm-130 μm.
[0010] The carpet double -sided tape for aviation, wherein the thickness of the second flame -retardant pressure sensitive adhesive layer is 30 μm-60 μm.
[0011] The aviation carpet double-faced adhesive tape, wherein the thickness of the PET substrate is 20-40 microns.
[0012] The aviation carpet double-faced adhesive tape, wherein the material of the primer layer is selected from one of polysiloxane, silane coupling agent and polyurethane resin.
[0013] The aviation carpet double-faced adhesive tape, wherein the thickness of the primer layer is 3-10 microns.
[0014] The aviation carpet double-faced adhesive tape, wherein the first fire-retardant pressure-sensitive adhesive layer and the second fire-retardant pressure-sensitive adhesive layer are different in color.
[0015] The aviation carpet double-faced adhesive tape, wherein the end surface of the PET substrate is sawtooth-shaped.
[0016] Beneficial effects: the aviation carpet double-faced adhesive tape comprises release paper, first fire-retardant pressure-sensitive adhesive layer, PET substrate, primer layer and second fire-retardant pressure-sensitive adhesive layer which are sequentially stacked from bottom to top. The primer layer is additionally arranged between the PET substrate and the second fire-retardant pressure-sensitive adhesive layer, so that the chemical adhesion is increased, the adhesion of the second fire-retardant pressure-sensitive adhesive layer to the PET substrate is improved, and the degumming condition is improved. Meanwhile, the pressure-sensitive adhesive with fire retardant is adopted, so that the excellent fire retardant performance is achieved, and the fire retardant effect is improved. In addition, the primer layer is additionally arranged between the PET substrate and the second fire-retardant pressure-sensitive adhesive layer, so that the adhesion of the adhesive layer to the PET substrate is increased, the degumming condition in the installation process is avoided, the first fire-retardant pressure-sensitive adhesive layer is bonded to the carpet, and the first fire-retardant pressure-sensitive adhesive layer is replaced together with the carpet and is not affected by the residual gum. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 Fig. 1 is a structural schematic view of the aviation carpet double-faced adhesive tape;
[0018] Mark explanation: release paper 10, first fire-retardant pressure-sensitive adhesive layer 20, PET substrate 30, primer layer 40, second fire-retardant pressure-sensitive adhesive layer 50. DETAILED DESCRIPTION
[0019] The aviation carpet double-faced adhesive tape, for the purpose, technical scheme and effect of the present application are more clear and definite, the present application is further described in detail below. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.
[0020] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features.
[0021] Those skilled in the art can understand that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by those skilled in the art to which the present application belongs. It should also be understood that terms such as those defined in general dictionaries should be understood to have meanings consistent with those in the prior art, and should not be interpreted in an idealized or overly formal sense unless specifically defined as such.
[0022] As Figure 1 The present application provides a double-sided adhesive tape for aviation carpet, which comprises, from bottom to top, release paper 10, first fire-retardant pressure-sensitive adhesive layer 20, PET substrate 30, primer layer 40 and second fire-retardant pressure-sensitive adhesive layer 50.
[0023] In the present embodiment, by adding a primer layer between the PET substrate and the second fire-retardant pressure-sensitive adhesive layer, the chemical adhesion is increased, the adhesion of the second fire-retardant pressure-sensitive adhesive layer to the PET substrate is improved, and the delamination is improved. At the same time, the pressure-sensitive adhesive with fire retardant has excellent fire-retardant performance, which can improve the fire-retardant effect. In addition, the primer layer added between the PET substrate and the second fire-retardant pressure-sensitive adhesive layer can increase the adhesion of the adhesive layer to the PET substrate, and can avoid delamination during installation. The first fire-retardant pressure-sensitive adhesive layer is bonded to the carpet and replaced together with the carpet, and is not affected by the residual glue.
[0024] In some embodiments, the material of the first fire-retardant pressure-sensitive adhesive layer is selected from one of acrylic pressure-sensitive adhesive, rubber pressure-sensitive adhesive and silicone pressure-sensitive adhesive; and the material of the second fire-retardant pressure-sensitive adhesive layer is selected from one of acrylic pressure-sensitive adhesive, rubber pressure-sensitive adhesive and silicone pressure-sensitive adhesive. The fire-retardant pressure-sensitive adhesive layer with the above-mentioned material can bring excellent fire-retardant performance to the double-sided adhesive tape, improve the fire-retardant effect, and at the same time, will not significantly reduce the adhesion of the adhesive tape, and can meet the fire-retardant requirements of airworthiness.
[0025] In some embodiments, the first fire-retardant pressure-sensitive adhesive layer has a thickness of 100-130 microns. The first fire-retardant pressure-sensitive adhesive layer is bonded to the carpet, so that when the thickness of the first fire-retardant pressure-sensitive adhesive layer is controlled within the above range, a first line of fire-retardant defense can be provided, so that the flame cannot burn the PET substrate.
[0026] In a preferred embodiment, the first fire-retardant pressure-sensitive adhesive layer has a thickness of 120 microns. The first fire-retardant pressure-sensitive adhesive layer with this thickness can improve the fire-retardant effect of the adhesive tape, and will not significantly reduce the adhesion of the adhesive tape, and can meet the airworthiness fire-retardant requirements.
[0027] In some embodiments, the second fire-retardant pressure-sensitive adhesive layer has a thickness of 30-60 microns. As a second line of fire-retardant defense, when the second fire-retardant pressure-sensitive adhesive layer with this thickness is compounded with the PET substrate through the primer layer, the adhesive layer can be prevented from falling off.
[0028] In a preferred embodiment, the second fire-retardant pressure-sensitive adhesive layer has a thickness of 40 microns.
[0029] In some embodiments, the PET substrate has a thickness of 20-40 microns. The PET substrate meets the BMS5-133 standard, and the PET substrate is transparent PET. The PET substrate with this thickness has excellent creep resistance, fatigue resistance, friction resistance, and dimensional stability, and can ensure that the adhesive tape has a certain tensile strength after being coated with the pressure-sensitive adhesive.
[0030] In a preferred embodiment, the PET substrate has a thickness of 30 microns.
[0031] In some embodiments, the primer layer is made of one of polysiloxane, silane coupling agent, and polyurethane resin. The primer layer made of the above materials can increase the adhesion between the adhesive layer and the PET substrate, increase the adhesion between the adhesive layer and the substrate, and effectively reduce the delamination phenomenon by increasing the adhesion.
[0032] In some embodiments, the primer layer has a thickness of 3-10 microns. The primer layer with this thickness provides a chemical adhesion between the second fire-retardant pressure-sensitive adhesive layer and the PET substrate, so that the adhesion between the second fire-retardant pressure-sensitive adhesive layer and the PET substrate is improved, and the delamination is improved.
[0033] In a preferred embodiment, the primer layer has a thickness of 5 microns.
[0034] In some embodiments, the first fire-retardant pressure-sensitive adhesive layer and the second fire-retardant pressure-sensitive adhesive layer have different colors.
[0035] In some embodiments, the first fire-retardant pressure-sensitive adhesive layer is added with a first color ink accounting for 5-10% of the mass of the first fire-retardant pressure-sensitive adhesive layer; the second fire-retardant pressure-sensitive adhesive layer is added with a second color ink accounting for 1-5% of the mass of the second fire-retardant pressure-sensitive adhesive layer; the first color ink is different from the second color ink in color. Adding the ink can change the color of the adhesive layer, and the purpose of distinguishing the adhesive layer can be achieved.
[0036] Specifically, the first fire-retardant pressure-sensitive adhesive layer is added with a black ink accounting for 7% of the mass of the first fire-retardant pressure-sensitive adhesive layer, and the second fire-retardant pressure-sensitive adhesive layer is added with a white ink accounting for 2% of the mass of the second fire-retardant pressure-sensitive adhesive layer; the ink is added in the glue for distinguishing the first fire-retardant pressure-sensitive adhesive layer and the second fire-retardant pressure-sensitive adhesive layer, wherein the first fire-retardant pressure-sensitive adhesive layer is black, and the second fire-retardant pressure-sensitive adhesive layer is white, so that during construction, which side is attached to the carpet and which side is attached to the floor can be determined according to the color, and the mistake can be reduced.
[0037] In some embodiments, the first color ink is selected from one of azo and phthalocyanine; the second color ink is selected from one of azo and phthalocyanine, and the above types of ink are not easy to fade.
[0038] In some embodiments, the end surface of the PET substrate is serrated. When the large roll of adhesive tape is cut into small rolls, the small knife on the slitting machine cuts the end surface of the PET into a serrated shape, and the PET double-sided adhesive tape with the easy-to-tear effect is obtained.
[0039] Specifically, the end surface of the PET substrate is the TD direction of the adhesive tape roll, the unwinding direction of the adhesive tape is the MD direction, the slitting machine is used to divide the large roll of adhesive tape into small rolls, which is different from the direct single cutting of the dividing machine, for example, a roll of adhesive tape with a width of 1250mm is divided into 25 rolls of adhesive tape with a width of 50mm, and the adhesive tape can be separated by adjusting the knife head spacing of the slitting machine. Since the knife blade of the slitting machine is relatively flat, the end surface of the cut adhesive tape is easy to tear.
[0040] In summary, the double-sided adhesive tape for carpet provided by the utility model has the advantages that the bottom coating layer is additionally arranged between the PET substrate and the second fire-retardant pressure-sensitive adhesive layer, the chemical adhesion is increased, the adhesion of the second fire-retardant pressure-sensitive adhesive layer to the PET substrate is improved, and the peeling condition is improved; meanwhile, the pressure-sensitive adhesive with the fire retardant is adopted, so that the double-sided adhesive tape has excellent fire-retardant performance and the fire-retardant effect can be improved. In addition, the bottom coating layer is additionally arranged between the PET substrate and the second fire-retardant pressure-sensitive adhesive layer, so that the adhesion between the adhesive layer and the PET substrate is increased, the peeling condition during installation can be avoided, the first fire-retardant pressure-sensitive adhesive layer is adhered to the carpet, and the first fire-retardant pressure-sensitive adhesive layer is replaced together with the carpet and is not affected by the residual glue.
[0041] It should be understood that the application of the present application is not limited to the above examples, and those of ordinary skill in the art can make improvements or changes according to the above description, and all these improvements and changes shall belong to the protection scope of the claims of the present application.
Claims
1. An aircraft carpet double-sided tape, characterized by, The first fire-retardant pressure-sensitive adhesive layer, the PET substrate, the primer layer and the second fire-retardant pressure-sensitive adhesive layer are sequentially stacked from bottom to top.
2. The double-coated tape for aircraft carpets according to claim 1, wherein The material of the first fire-retardant pressure-sensitive adhesive layer is selected from one of acrylic pressure-sensitive adhesive, rubber pressure-sensitive adhesive and silicone pressure-sensitive adhesive; and the material of the second fire-retardant pressure-sensitive adhesive layer is selected from one of acrylic pressure-sensitive adhesive, rubber pressure-sensitive adhesive and silicone pressure-sensitive adhesive.
3. The double-coated tape for aircraft carpets according to claim 1, wherein The thickness of the first fire-retardant pressure-sensitive adhesive layer is 100-130 mu m.
4. The double-coated tape for aircraft carpets according to claim 1, wherein The thickness of the second fire-retardant pressure-sensitive adhesive layer is 30-60 mu m.
5. The double-coated tape for aircraft carpets according to claim 1, wherein The thickness of the PET substrate is 20-40 mu m.
6. The double-coated tape for aircraft carpets according to claim 1, wherein The material of the primer layer is selected from one of polysiloxane, silane coupling agent and polyurethane resin.
7. The double-coated tape for aircraft carpets according to claim 1, wherein The thickness of the primer layer is 3-10 mu m.
8. The double-coated tape for aircraft carpets according to claim 1, wherein The first fire-retardant pressure-sensitive adhesive layer and the second fire-retardant pressure-sensitive adhesive layer are different in color.
9. The carpet double-coated tape for aerospace use according to claim 1, wherein The end surface of the PET substrate is serrated.