Easy-to-peel steel-plastic composite belt and preparation process thereof

Abstract

The present invention discloses an easy-to-peel steel-plastic composite belt and a preparation process thereof. The composite belt comprises a steel belt and an easy-to-peel film arranged on both sides thereof, and the peel strength between the steel belt and the easy-to-peel film is 1.5-5N / cm. In the present invention, the first low-temperature film of the easy-to-peel film is bonded to the steel belt, and the second low-temperature film is bonded to the outer sheath. The peel strength between the steel belt and the easy-to-peel film is regulated to reach 1.5-5N / cm by regulating parameters such as the composite temperature and speed between the easy-to-peel film and the steel belt, which is much smaller than the peel strength of the existing steel-plastic composite belt. The easy-to-peel film can be easily and completely peeled off from the surface of the steel belt without residue or damage. The composite belt has a strong anti-interference ability and is suitable for applications where the film needs to be completely separated from the steel belt. It is low in cost and suitable for industrial promotion and use.

Description

Technical Field

[0001] The invention belongs to the technical field of communication optical cables, and in particular relates to an easily peelable steel-plastic composite tape and a preparation process thereof. Background Art

[0002] In communication optical cables, steel-plastic composite tapes mainly protect the cable core through armoring, which can resist external forces and ensure the normal use of communication optical cables. However, in existing steel-plastic composite tapes, the peel strength between the steel tape and the film attached to it is generally not less than 6.13N / cm. For applications where the film and the steel tape need to be completely separated, there are problems such as difficulty in peeling and residual film after peeling. Therefore, designing an easy-to-peel steel-plastic composite tape has important practical significance and will greatly broaden the application scenarios of steel-plastic composite tapes. Summary of the invention

[0003] In order to solve the technical problems existing in the prior art, the purpose of the present invention is to provide an easily peelable steel-plastic composite belt and a preparation process thereof.

[0004] In order to achieve the above purpose and the above technical effect, the technical solution adopted by the present invention is:

[0005] An easily peelable steel-plastic composite belt comprises a steel belt and easily peelable films arranged on both sides of the steel belt, and the peeling strength between the steel belt and the easily peelable film is 1.5-5N / cm.

[0006] In the easily peelable steel-plastic composite belt provided by the present invention, the thickness of the steel belt is 0.1-0.2 mm, and the thickness of the composite belt is 0.2-0.3 mm.

[0007] In the easily peelable steel-plastic composite belt provided by the present invention, the composite temperature of the steel belt and the easily peelable film is 195-325° C., and the production speed is 20-25 m / min.

[0008] In an easily peelable steel-plastic composite belt provided by the present invention, the easily peelable film includes a first low-temperature film, a high-temperature film and a second low-temperature film arranged in sequence from the inside to the outside, the first low-temperature film is in contact with the steel belt, and the second low-temperature film is in contact with the outer sheath.

[0009] The present invention also provides a preparation process of an easily peelable steel-plastic composite tape, comprising the following steps:

[0010] Select appropriate steel belt and easy-to-peel film, place the steel belt and the easy-to-peel film on unwinding rollers respectively, and then control the steel belt and the easy-to-peel film to be continuously unwound at a certain tension and speed respectively;

[0011] The steel strip and the easy-peel film are fed into the laminating machine, and the steel strip is preheated to reach the laminating temperature;

[0012] The easy-to-peel film is tightly thermally bonded to the steel strip from both sides, enters the post-oven to form a composite strip, and is finally rolled up after cooling and put into storage after passing the inspection.

[0013] In the preparation process of the easily peelable steel-plastic composite tape provided by the present invention, the unwinding tension of the easily peelable film is controlled at 0.18-0.22N, and the unwinding speed is 20-25m / min.

[0014] In the preparation process of the easily peelable steel-plastic composite belt provided by the present invention, the steel belt is preheated by passing through an upper oven, a vertical oven and a rear oven at a speed of 20-25 m / min.

[0015] In the preparation process of the easily peelable steel-plastic composite tape provided by the present invention, the temperature of the upper oven is 195-205°C, and the temperature of the vertical oven is 315-325°C.

[0016] In the preparation process of the easily peelable steel-plastic composite tape provided by the present invention, the temperature of the steel tape entering the post-oven after being composited with the easily peelable film is 315-325°C.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The present invention discloses an easy-to-peel steel-plastic composite belt and a preparation process thereof. The composite belt comprises a steel belt and an easy-to-peel film arranged on both sides thereof, and the peeling strength between the steel belt and the easy-to-peel film is 1.5-5N / cm. In the present invention, the first low-temperature film of the easy-to-peel film is bonded to the steel belt, and the second low-temperature film is bonded to the outer sheath. By regulating the composite temperature and speed between the easy-to-peel film and the steel belt, the peeling strength between the steel belt and the easy-to-peel film is regulated to reach 1.5-5N / cm, which is much smaller than the peeling strength of the existing steel-plastic composite belt (not less than 6.13N / cm). The easy-to-peel film can be easily and completely peeled off from the steel belt without residue or damage. The composite belt has a strong anti-interference ability and is suitable for applications where the film and the steel belt need to be completely separated. It is low in cost and suitable for industrial promotion and use. DETAILED DESCRIPTION

[0019] The present invention is described in detail below so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0020] A brief summary of one or more aspects is given below to provide a basic understanding of these aspects. This summary is not an exhaustive overview of all conceived aspects, and is neither intended to identify the key or critical elements of all aspects nor to define the scope of any or all aspects. Its only purpose is to give some concepts of one or more aspects in a simplified form as a prelude to a more detailed description that will be given later.

[0021] On the one hand, the present invention provides an easy-to-peel steel-plastic composite belt, comprising a steel belt with a thickness of 0.1-0.2 mm and easy-to-peel films arranged on both sides thereof, the thickness of the composite belt is 0.2-0.3 mm, the peeling strength between the steel belt and the easy-to-peel film is 1.5-5 N / cm, the composite temperature of the steel belt and the easy-to-peel film is 195-325°C, and the production speed is 20-25 m / min.

[0022] The easy-to-peel film comprises a first low-temperature film, a high-temperature film and a second low-temperature film which are sequentially arranged from the inside to the outside. The first low-temperature film is attached to the steel belt, and the second low-temperature film is attached to the outer sheath.

[0023] On the other hand, the present invention also provides a process for preparing an easily peelable steel-plastic composite tape, comprising the following steps:

[0024] A steel strip and an easy-to-peel film with a thickness of 0.1-0.2 mm are selected, and the steel strip and the easy-to-peel film are placed on unwinding rollers respectively, and then the steel strip and the easy-to-peel film are controlled to be continuously unwound at a certain tension and speed respectively, wherein the unwinding tension of the easy-to-peel film is controlled at 0.18-0.22 N, and the unwinding speed is 20-25 m / min;

[0025] The steel strip and the easy-peel film are fed into the laminating machine. The steel strip passes through the upper oven and the vertical oven at a speed of 20-25m / min for preheating. The temperature of the upper oven is 195-205℃, and the temperature of the vertical oven is 315-325℃, so that the steel strip reaches the laminating temperature;

[0026] The easy-to-peel film is tightly thermally bonded to the steel strip from both sides and enters the post-oven at a speed of 20-25m / min. The temperature of the post-oven is 315-325℃ to form a composite strip. Finally, it is cooled and rolled up, and put into storage after passing the inspection.

[0027] Example 1

[0028] An easily peelable steel-plastic composite belt comprises a steel belt with a thickness of 0.115 mm and easily peelable films arranged on both sides thereof, the thickness of the composite belt is 0.205 mm, the peeling strength between the steel belt and the easily peelable film is 1.5-5 N / cm, the composite temperature of the steel belt and the easily peelable film is 195-325°C, and the production speed is 22 m / min.

[0029] A preparation process of an easily peelable steel-plastic composite tape comprises the following steps:

[0030] A steel strip with a thickness of 0.115 mm and an easy-to-peel film with a thickness of 0.045 mm were selected, and the steel strip and the easy-to-peel film were placed on unwinding rollers respectively, and then the steel strip and the easy-to-peel film were controlled to be continuously unwound at a certain tension and speed respectively, wherein the unwinding tension of the easy-to-peel film was controlled at 0.18 N, and the unwinding speed was 22 m / min;

[0031] The steel strip and the easy-peel film are fed into the laminating machine. The steel strip passes through the upper oven and the vertical oven at a speed of 22m / min for preheating. The temperature of the upper oven is 200℃, the temperature of the vertical oven is 320℃, and the temperature of the rear oven is 320℃, so that the steel strip reaches the laminating temperature;

[0032] The easy-to-peel film is tightly thermally bonded to the steel strip from both sides, and enters the post-oven for thermal bonding at a speed of 22m / min. The temperature of the post-oven is 320℃ to form a composite strip, and finally it is rolled up after being cooled by cold water. It is put into storage after passing the inspection. The surface of the easy-to-peel steel-plastic composite strip should be flat, uniform, smooth, free of impurities, spots or damage, etc. The easy-to-peel film can be completely peeled off from the steel strip.

[0033] Example 2

[0034] An easily peelable steel-plastic composite belt comprises a steel belt with a thickness of 0.115 mm and easily peelable films arranged on both sides thereof, the thickness of the composite belt is 0.205 mm, the peeling strength between the steel belt and the easily peelable film is 1.5-5 N / cm, the composite temperature of the steel belt and the easily peelable film is 195-325°C, and the production speed is 22 m / min.

[0035] A preparation process of an easily peelable steel-plastic composite tape comprises the following steps:

[0036] A steel strip with a thickness of 0.115 mm and an easy-to-peel film with a thickness of 0.045 mm were selected, and the steel strip and the easy-to-peel film were placed on unwinding rollers respectively, and then the steel strip and the easy-to-peel film were controlled to be continuously unwound at a certain tension and speed respectively, wherein the unwinding tension of the easy-to-peel film was controlled at 0.22 N, and the unwinding speed was 22 m / min;

[0037] The steel strip and the easy-peel film are fed into the laminating machine. The steel strip passes through the upper oven and the vertical oven at a speed of 22m / min for preheating. The temperature of the upper oven is 195℃ and the temperature of the vertical oven is 315℃, so that the steel strip reaches the laminating temperature.

[0038] The easy-to-peel film is tightly thermally bonded to the steel strip from both sides and enters the post-oven at a speed of 22m / min. The temperature of the post-oven is 315℃ to form a composite strip. Finally, it is rolled up after cooling and put into storage after passing the inspection.

[0039] The rest is the same as in Example 1.

[0040] Comparative Example 1

[0041] A preparation process of a steel-plastic composite belt comprises the following steps:

[0042] A steel strip with a thickness of 0.115 mm and an easy-to-peel film with a thickness of 0.045 mm were selected, and the steel strip and the easy-to-peel film were placed on unwinding rollers respectively, and then the steel strip and the easy-to-peel film were controlled to be continuously unwound at a certain tension and speed respectively, wherein the unwinding tension of the easy-to-peel film was controlled at 0.18 N, and the unwinding speed was 22 m / min;

[0043] The steel strip and the easy-peel film are fed into the laminating machine. The steel strip passes through the upper oven and the vertical oven at a speed of 22m / min for preheating. The temperature of the upper oven is 240℃ and the temperature of the vertical oven is 350℃, so that the steel strip reaches the laminating temperature.

[0044] The easy-to-peel film is tightly thermally bonded to the steel strip from both sides and enters the post-oven at a speed of 22m / min. The temperature of the post-oven is 410℃ to form a composite strip. Finally, it is rolled up after cooling and put into storage after passing the inspection.

[0045] The rest is the same as in Example 1.

[0046] Comparative Example 2

[0047] A preparation process of a steel-plastic composite belt comprises the following steps:

[0048] A steel strip with a thickness of 0.115 mm and an easy-to-peel film with a thickness of 0.045 mm were selected, and the steel strip and the easy-to-peel film were placed on unwinding rollers respectively, and then the steel strip and the easy-to-peel film were controlled to be continuously unwound at a certain tension and speed respectively, wherein the unwinding tension of the easy-to-peel film was controlled at 0.18 N, and the unwinding speed was 22 m / min;

[0049] The steel strip and the easy-peel film are fed into the laminating machine. The steel strip passes through the upper oven and the vertical oven at a speed of 22m / min for preheating. The temperature of the upper oven is 220℃ and the temperature of the vertical oven is 330℃, so that the steel strip reaches the laminating temperature.

[0050] The easy-to-peel film is tightly thermally bonded to the steel strip from both sides and enters the post-oven at a speed of 22m / min. The temperature of the post-oven is 390℃ to form a composite strip. Finally, it is rolled up after cooling and put into storage after passing the inspection.

[0051] The rest is the same as in Example 1.

[0052] Comparative Example 3

[0053] A preparation process of a steel-plastic composite belt comprises the following steps:

[0054] A steel strip with a thickness of 0.115 mm and an easy-to-peel film with a thickness of 0.045 mm were selected, and the steel strip and the easy-to-peel film were placed on unwinding rollers respectively, and then the steel strip and the easy-to-peel film were controlled to be continuously unwound at a certain tension and speed respectively, wherein the unwinding tension of the easy-to-peel film was controlled at 0.18 N, and the unwinding speed was 30 m / min;

[0055] The steel strip and the easy-peel film are fed into the laminating machine. The steel strip passes through the upper oven and the vertical oven at a speed of 30m / min for preheating. The temperature of the upper oven is 200℃, the temperature of the vertical oven is 320℃, and the temperature of the rear oven is 320℃, so that the steel strip reaches the laminating temperature;

[0056] The easy-to-peel film is tightly thermally bonded to the steel strip from both sides, and enters the post-oven for thermal bonding at a speed of 30m / min. The temperature of the post-oven is 320℃ to form a composite strip, which is finally cooled with cold water and rolled up. It is then put into storage after passing the inspection.

[0057] The peel strength obtained in Examples 1-2 and Comparative Examples 1-3 was tested. The test results show that in the easy-to-peel steel-plastic composite tapes prepared in Examples 1-2, the peel strength between the steel tape and the easy-to-peel film is 1.5-4 N / cm, and in the steel-plastic composite tapes of Comparative Examples 1-3, the peel strength between the steel tape and the easy-to-peel film is not less than 6.13 N / cm. It can be seen that the composite temperature and production speed have an effect on the peel strength between the steel tape and the easy-to-peel film, and too high a temperature or too fast a speed is not conducive to regulating a suitable peel strength.

[0058] Parts or structures not specifically described in the present invention may adopt existing technologies or existing products and will not be described in detail here.

[0059] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A process for preparing an easily peelable steel-plastic composite tape, characterized in that: The composite belt comprises a steel belt and easy-to-peel films arranged on both sides thereof, and the peeling strength between the steel belt and the easy-to-peel film is 1.5-4N / cm; The easy-to-peel film includes a first low-temperature film, a high-temperature film and a second low-temperature film arranged in sequence from the inside to the outside, the first low-temperature film is attached to the steel belt, and the second low-temperature film is attached to the outer sheath; The preparation process comprises the following steps: Select appropriate steel strip and easy-to-peel film, place the steel strip and the easy-to-peel film on unwinding rollers respectively, and then control the steel strip and the easy-to-peel film to be continuously unwound at a certain tension and speed respectively, wherein the unwinding tension of the easy-to-peel film is controlled at 0.18-0.22N, and the unwinding speed is 20-25m / min; The steel strip and the easy-peel film are fed into the laminating machine, and the steel strip is preheated by passing through the upper oven and the vertical oven at a speed of 20-25 m / min. The temperature of the upper oven is 195-205°C, and the temperature of the vertical oven is 315-325°C, so that the steel strip reaches the laminating temperature; The easy-to-peel film is tightly thermally bonded to the steel strip from both sides and enters the post-oven at a speed of 20-25m / min. The temperature of the post-oven is 315-325℃ to form a composite strip. Finally, it is cooled and rolled up, and put into storage after passing the inspection.

2. The process for preparing an easily peelable steel-plastic composite tape according to claim 1, characterized in that: The thickness of the steel strip is 0.1-0.2 mm, and the thickness of the composite strip is 0.2-0.3 mm.