PET material sleeve for optical cable
Through structural design and material sharing, the problems of large shrinkage rate and poor compressive strength of existing PET material sheaths for optical cables have been solved, thereby improving the stability and protective performance of optical cables.
Patent Information
- Application Number
- CN202422856231.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-22
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2034-11-22
AI Technical Summary
Existing PET material sheaths for optical cables have problems such as large shrinkage and poor compressive strength.
The outer and inner sheaths are made of a blend of PBT and PET materials, combined with a fireproof layer, a waterproof layer, a wear-resistant layer, and a buffer structure to enhance the protective performance of the optical cable.
It improves the shrinkage rate and compressive strength of the sheath, enhances the protective function of the optical cable, improves the buffering effect, ensures the stability and abrasion resistance of the optical fiber, and prevents damage to the optical cable from moisture and open flame.
Smart Images
Figure CN223611759U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of optical cable, specifically to a PET material sleeve for optical cable. BACKGROUND
[0002] Optical fiber cable is a new generation of transmission medium, compared with copper medium, optical fiber has greatly improved in safety, reliability or network performance. The bandwidth of optical fiber transmission greatly exceeds copper cable, and the maximum distance supported is more than two kilometers. Optical fiber cable has the advantages of good electromagnetic interference resistance, strong security, high speed, large transmission capacity and the like.
[0003] In the current fierce competition of optical cable industry, the product is facing serious homogenization, more performance is cost competition, realizing PET material sleeve instead of PBT sleeve, popularizing the application in optical cable industry can significantly reduce the material cost of the company and greatly improve the product competitiveness of the company, so it has great popularization value in the communication industry block, with the continuous development of technology, pbt and pet blend material will have wider application prospect. The PET mixture production sleeve can replace the PBT sleeve.
[0004] An urgent need for a PET material sleeve for optical cable to solve the technical defects in the above technology. UTILITY MODEL CONTENT
[0005] The utility model aims at providing a PET material sleeve for optical cable to solve the problems of large shrinkage rate and poor compression resistance of the sleeve in the above background technology.
[0006] To achieve the above object, the utility model provides the following technical scheme: a PET material sleeve for optical cable, including the outer sheath, the inner side of the outer sheath is attached with the fireproof layer, the inner side of the fireproof layer is attached with the steel band, the inner side of the steel band is attached with the inner sheath, the inner side of the inner sheath is attached with the aluminum band, the central position of the inner side of the aluminum band is installed with the center reinforcing part, the outside of the center reinforcing part is installed with the loose sleeve, the inner side of the loose sleeve is installed with the optical fiber main body, the outer side of the outer sheath is provided with the waterproof layer, the outer side of the waterproof layer is installed with the wear-resistant layer.
[0007] Preferably, the outer sheath and the inner sheath are made of pbt and pet blend material, and the pbt and pet mixing ratio is 1:1.
[0008] Preferably, the wear-resistant layer is made of ceramic wear-resistant material, and the waterproof layer is made of polyester ammonia waterproof material.
[0009] Preferably, the loose sleeve is provided with six groups, and the optical fiber main body is made of colored optical fiber.
[0010] Preferably, the wear-resistant layer is arranged at the outermost layer of the cable jacket, and the waterproof layer is arranged between the wear-resistant layer and the outer sheath.
[0011] Preferably, a central buffer pad is filled between the aluminum tape and the central reinforcing member, and the central buffer pad is made of rubber material.
[0012] Preferably, a buffer hollow layer is arranged at the inner side of the loose tube, and a buffer pad block is arranged in the buffer hollow layer.
[0013] Preferably, the buffer pad block is arranged in ten groups, and the buffer pad blocks are arranged in a ring shape in the loose tube.
[0014] Compared with the prior art, the PET material jacket for the optical cable has the advantages that the shrinkage and compression resistance of the jacket are improved, the protection function is enhanced, and the buffer effect is improved.
[0015] (1) The outer sheath and the inner sheath are made of a new mixed material, the outer sheath and the inner sheath are made of a mixture of PBT material and PET material at a mixing ratio of 1:1, the outer sheath and the inner sheath made of the new material can achieve a jacket axial shrinkage rate of 1.5%, the jacket compression resistance is more than 850N, and the stability of the excess length of the optical fiber in the jacket is ensured; the structure enhances the compression resistance of the optical cable and reduces the shrinkage rate of the jacket.
[0016] (2) The waterproof layer, the fireproof layer and the wear-resistant layer are arranged, the waterproof layer is made of a polyester ammonia waterproof material to form a jacket layer, the waterproof layer can prevent external water from entering the inside of the optical cable, thereby affecting the normal use effect of the optical fiber body in the optical cable, the wear-resistant layer arranged at the outermost part can protect the optical cable as a whole, reduce the wear degree of the outer sheath of the optical cable, the fireproof layer is made of a fireproof material, and direct burning of the optical fiber body in the optical cable by an open flame can be avoided, and the structure enhances the protection effect of the optical cable.
[0017] (3) The loose tube, the central buffer pad, the buffer hollow layer and the buffer pad block are arranged, the optical fiber body is arranged in the loose tube, the loose tube can protect the optical fiber body, the buffer hollow layer and the buffer pad block in the loose tube form a ring-shaped buffer protection structure, the buffer protection structure not only improves the bending resistance of the optical cable, but also improves the buffer protection of the optical fiber body, and the central buffer pad further enhances the buffer protection of the optical fiber body, and the structure realizes the function of improving the buffer effect. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1It is the front view sectional structure schematic view of the utility model;
[0019] Figure 2 It is the side view sectional structure partial structure schematic view of the utility model;
[0020] Figure 3 It is the front view sectional structure schematic view of the utility model's loose pipe sleeve;
[0021] Figure 4 It is the front view sectional structure schematic view of the utility model's external sleeve.
[0022] In the drawing: 1, outer sheath; 2, steel belt; 3, inner sheath; 4, aluminum belt; 5, loose sleeve; 6, waterproof layer; 7, center buffer pad; 8, center reinforcing member; 9, optical fiber main body; 10, fireproof layer; 11, wear-resistant layer; 12, buffer hollow layer; 13, buffer pad block. DETAILED DESCRIPTION
[0023] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the protection scope of the utility model.
[0024] Please refer to Figures 1-4 The utility model provides an embodiment: a kind of PET material sleeve for optical cable, including outer sheath 1, the inner side of outer sheath 1 is attached with fireproof layer 10, the inner side of fireproof layer 10 is attached with steel belt 2, the inner side of steel belt 2 is attached with inner sheath 3, the inner side of inner sheath 3 is attached with aluminum belt 4, the inner side of aluminum belt 4 is installed with center reinforcing member 8 at the center position, center reinforcing member 8 is installed with loose sleeve 5 outside, loose sleeve 5 is installed with optical fiber main body 9 inside, the outer side of outer sheath 1 is provided with waterproof layer 6, waterproof layer 6 is installed with wear-resistant layer 11 outside, loose sleeve 5 is provided with six groups, and optical fiber main body 9 uses colored optical fiber;
[0025] Outer sheath 1 and inner sheath 3 are made of pbt and pet blend material, and the mixing ratio of pbt and pet is 1:1;
[0026] Specifically, as Figure 1 And Figure 4As shown, the outer sheath 1 and the inner sheath 3 are made of a mixture of PBT material and PET material in a ratio of 1:1, the outer sheath 1 and the inner sheath 3 of the new material can achieve a sleeve axial shrinkage rate of 1.5%, the sleeve compression resistance meets 850N or more, and the stability of the excess length of the optical fiber in the sleeve is ensured; the problems of the finished product PET mixed material sleeve caused by the low heat distortion temperature, such as yarn printing problem.
[0027] The wear-resistant layer 11 is made of ceramic wear-resistant material, the waterproof layer 6 is made of polyester ammonia waterproof material, the wear-resistant layer 11 is arranged at the outermost layer of the optical cable sleeve, and the waterproof layer 6 is arranged between the wear-resistant layer 11 and the outer sheath 1.
[0028] Specifically, as shown in Figure 1 and Figure 2 The waterproof layer 6 can prevent external moisture from entering the inside of the optical cable, thereby affecting the normal use effect of the optical fiber body 9 inside the optical cable, the wear-resistant layer 11 arranged at the outermost part can provide wear-resistant protection for the whole optical cable, reduce the wear degree of the outer sheath 1 of the optical cable, and the fireproof layer 10 is made of fireproof material, which can avoid direct burning of the optical fiber body 9 inside the optical cable by open flame.
[0029] The center buffer pad 7 is filled between the aluminum tape 4 and the center reinforcing member 8, and the center buffer pad 7 is made of rubber material, the inner side of the loose sleeve 5 is provided with a buffer hollow layer 12, the buffer pad block 13 is installed inside the buffer hollow layer 12, the buffer pad block 13 is provided with ten groups, and the buffer pad block 13 is distributed in a ring shape inside the loose sleeve 5.
[0030] Specifically, as shown in Figure 1 and Figure 3 The loose sleeve 5 can protect the optical fiber body 9, the buffer hollow layer 12 and the buffer pad block 13 inside the loose sleeve 5 form a ring-shaped buffer protection structure, which not only improves the bending resistance effect of the optical cable, but also improves the buffer protection of the optical fiber body 9, and the center buffer pad 7 further strengthens the buffer protection of the optical fiber body 9.
[0031] Working principle: the utility model discloses in use, outer sheath 1 and inner sheath 3 are made through the mixing ratio 1:1 of PBT material and PET material, and the outer sheath 1 and the inner sheath 3 of new material can reach the shrinkage of 1.5% of sleeve axial, the sleeve compression resistance satisfies 850N above, ensure the stability of the excess length of the optical fiber in the sleeve, through the sleeve compression strength and the PET after shrinkage rate etc. Problem solving product after PET mixed material sleeve because the low heat distortion temperature leads to product yarn printing problem, loose sleeve 5 can carry out the protection to the optical fiber main body 9, and the buffer hollow layer 12 and the buffer pad 13 in loose sleeve 5 form annular buffer protection structure, not only improve the bending resistance effect of optical cable, and improve the buffer protection to optical fiber main body 9, central buffer pad 7 further strengthens the buffer protection to optical fiber main body 9, waterproof layer 6 can avoid the moisture of outside into the inside of optical cable, thereby influence the normal use effect of optical fiber main body 9 in the inside of optical cable, wear-resistant layer 11 is set in the most outside and can carry out wear-resistant protection to the whole optical cable, reduce the wear and tear degree of outer sheath 1 of optical cable, fireproof layer 10 adopts fireproof material, can avoid direct burning of open flame and break the optical fiber main body 9 in the inside of optical cable, and the structure enhances the protection effect of optical cable.
[0032] It is obvious for those skilled in the art that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point, the embodiments should be regarded as exemplary and non-restrictive, the scope of the utility model is defined by the appended claims instead of the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any reference signs in the claims should not be regarded as limiting the involved claims.
Claims
1. A PET material jacket for optical cables comprising an outer sheath (1), characterized in that: The inner side of the outer sheath (1) is attached with a fireproof layer (10), the inner side of the fireproof layer (10) is attached with a steel band (2), the inner side of the steel band (2) is attached with an inner sheath (3), the inner side of the inner sheath (3) is attached with an aluminum band (4), the central position of the inner side of the aluminum band (4) is installed with a central reinforcing part (8), the outer part of the central reinforcing part (8) is installed with a loose tube (5), the inner side of the loose tube (5) is installed with an optical fiber body (9), the outer side of the outer sheath (1) is provided with a waterproof layer (6), the outer side of the waterproof layer (6) is installed with a wear-resistant layer (11).
2. The PET material jacket for optical fiber cable according to claim 1, characterized in that: The wear-resistant layer (11) adopts ceramic wear-resistant material, and the waterproof layer (6) adopts polyester ammonia waterproof material.
3. The PET material jacket for optical fiber cable according to claim 1, characterized in that: The loose tube (5) is provided with six groups, and the optical fiber body (9) adopts colored optical fiber.
4. The PET material jacket for optical fiber cable according to claim 1, characterized in that: The wear-resistant layer (11) is arranged at the outermost layer of the optical cable sheath, and the waterproof layer (6) is arranged between the wear-resistant layer (11) and the outer sheath (1).
5. The PET material jacket for optical fiber cable according to claim 1, wherein: The aluminum band (4) and the central reinforcing part (8) are filled with a central buffer pad (7), and the central buffer pad (7) adopts rubber material.
6. The PET material jacket for optical fiber cable according to claim 1, wherein: The inner side of the loose tube (5) is provided with a buffer hollow layer (12), and the inner part of the buffer hollow layer (12) is installed with a buffer pad block (13).
7. The PET material jacket for optical fiber cable according to claim 6, characterized in that: The buffer pad block (13) is provided with ten groups, and the buffer pad block (13) is annularly distributed in the inner part of the loose tube (5).