CN210041300U - Composite heat-shrinkable sleeve for optical cable connection - Google Patents
Composite heat-shrinkable sleeve for optical cable connection Download PDFInfo
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- CN210041300U CN210041300U CN201920886632.0U CN201920886632U CN210041300U CN 210041300 U CN210041300 U CN 210041300U CN 201920886632 U CN201920886632 U CN 201920886632U CN 210041300 U CN210041300 U CN 210041300U
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Abstract
The utility model belongs to heat shrink tube field especially relates to an optical cable continues with compound heat shrink sleeve. The utility model provides a heat shrink sleeve includes: a transparent hot melt hose; and the transparent polyolefin thermal contraction layer is coated on the outer surface of the transparent hot melt rubber tube. The utility model provides an optical cable continues with compound heat shrink sleeve's inlayer material has fine waterproof nature sealing performance and elasticity, and outer material has better heat shrinkage, elasticity and mechanical strength, consequently the utility model provides a heat shrink sleeve can demonstrate higher waterproof sealing performance, heat shrinkage, elasticity and mechanical strength. Furthermore, because the utility model provides an inlayer and outer material of heat shrink sleeve are transparent, consequently the utility model provides a heat shrink sleeve also has better transparency. The utility model provides a heat shrink sleeve can be fine satisfy the optical cable requirement of continuing, can be in the optical cable connection by wide application.
Description
Technical Field
The utility model belongs to heat shrink tube field especially relates to an optical cable continues with compound heat shrink sleeve.
Background
With the rapid development of the communication industry, the optical cable has very wide application. In the process of burying the optical cables, two optical cables need to be connected and connected, and in order to ensure the sealing property, the elasticity and the bending resistance of the optical cable connection position, a protective sleeve needs to be sleeved on the connection position.
At present, a protective sleeve for optical cable splicing which is relatively common is a heat-shrinkable tube, but the existing heat-shrinkable tube for optical cable splicing is difficult to simultaneously consider higher waterproof sealing performance, heat-shrinkable performance, elasticity and mechanical strength. Therefore, it is necessary to develop a heat shrinkable sleeve which can meet the optical cable splicing requirement well.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides a composite heat shrinkable sleeve for optical cable splicing, which has high waterproof sealing performance, heat shrinkability, elasticity and mechanical strength.
The utility model provides an optical cable continues with compound heat shrink sleeve, include:
a transparent hot melt hose;
and the transparent polyolefin thermal contraction layer is coated on the outer surface of the transparent hot melt rubber tube.
Preferably, the thickness of the pipe wall of the transparent hot melt pipe is 0.25-0.8 mm.
Preferably, the light transmittance of the transparent hot melt adhesive tube is 60-75%.
Preferably, the softening temperature of the transparent hot melt adhesive tube is 80-90 ℃.
Preferably, the melt index of the transparent hot melt adhesive tube is 105-110 g/10 min.
Preferably, the peel strength of the transparent hot melt adhesive tube is more than or equal to 50N/25 mm.
Preferably, the thickness of the transparent polyolefin heat shrinkable layer is 0.3-0.9 mm.
Preferably, the light transmittance of the transparent polyolefin heat-shrinkable layer is 60-75%.
Preferably, the shrinkage ratio of the heat-shrinkable sleeve is (2-4): 1.
Compared with the prior art, the utility model provides an optical cable continues with compound heat shrink sleeve. The utility model provides a heat shrink sleeve includes: a transparent hot melt hose; and the transparent polyolefin thermal contraction layer is coated on the outer surface of the transparent hot melt rubber tube. The utility model provides an optical cable continues with compound heat shrink sleeve's inlayer material has fine waterproof nature sealing performance and elasticity, and outer material has better heat shrinkage, elasticity and mechanical strength, consequently the utility model provides a heat shrink sleeve can demonstrate higher waterproof sealing performance, heat shrinkage, elasticity and mechanical strength. Furthermore, because the utility model provides an inlayer and outer material of heat shrink sleeve are transparent, consequently the utility model provides a heat shrink sleeve also has better transparency. The utility model provides a heat shrink sleeve can be fine satisfy the optical cable requirement of continuing, can be in the optical cable connection by wide application.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural view of a composite heat shrinkable sleeve for splicing optical cables according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model provides an optical cable continues with compound heat shrink sleeve, include:
a transparent hot melt hose;
and the transparent polyolefin thermal contraction layer is coated on the outer surface of the transparent hot melt rubber tube.
Referring to fig. 1, fig. 1 is a schematic structural view of a composite heat shrinkable sleeve for splicing optical cables according to an embodiment of the present invention. In FIG. 1, 1 denotes a transparent hot-melt tube, 2 denotes a transparent polyolefin heat-shrinkable layer, 3 denotes an optical cable, 4 denotes an optical cable joint, 5 denotes a heat-shrinkable sleeve after shrinkage, and 6 denotes a heat-shrinkable sleeve before shrinkage.
The utility model provides an optical cable continues to use compound heat shrink sleeve includes transparent hot melt rubber pipe 1 and transparent polyolefin heat shrink layer 2. Wherein, the transparent hot melt rubber tube 1 is an inner layer of the heat shrinkable sleeve; the thickness of the tube wall of the transparent hot melt tube 1 is preferably 0.25-0.8 mm, and specifically can be 0.25 mm, 0.3 mm, 0.35 mm, 0.4 mm, 0.45 mm, 0.5 mm, 0.55 mm, 0.6 mm, 0.65 mm, 0.7 mm, 0.75 mm or 0.8 mm; the light transmittance of the transparent hot melt adhesive tube 1 is preferably 60-75%, and specifically may be 60%, 61%, 62%, 63%, 64%, 65%, 66%, 67%, 68%, 69%, 70%, 71%, 72%, 73%, 74% or 75%; the softening temperature of the transparent hot-melt adhesive tube 1 is preferably 80-90 ℃, and specifically can be 80 ℃, 81 ℃, 82 ℃, 83 ℃, 84 ℃, 85 ℃, 86 ℃, 87 ℃, 88 ℃, 89 ℃ or 90 ℃; the melt index of the transparent hot melt adhesive tube 1 is preferably 105-110 g/10min, and specifically can be 105g/10min, 106g/10min, 107g/10min, 108g/10min, 109g/10min or 110g/10 min; the peel strength of the transparent hot melt adhesive tube 1 is preferably not less than 50N/25 mm.
In the present invention, the transparent polyolefin heat shrinkable layer 2 is an outer layer of the heat shrinkable sleeve, which is coated on the outer surface of the transparent hot-melt adhesive tube 1. The utility model discloses in, transparent polyolefin heat shrink layer 2 is one kind and uses transparent polyolefin as the main materials, through the granulation, extrude, the material that processes such as irradiation, expansion made, because the irradiation can make the molecular structure of polyolefin change, this kind of change makes polyolefin have memory effect under certain condition. The heat-shrinkable tube is characterized in that the heat-shrinkable tube is expanded and shaped after being irradiated by utilizing the principle of the memory effect; in application, the heated catheter can be retracted to the pre-expanded state due to memory effect. In the present invention, the thickness of the transparent polyolefin heat-shrinkable layer 2 is preferably 0.3 to 0.9 mm, and specifically may be 0.3 mm, 0.35 mm, 0.4 mm, 0.45 mm, 0.5 mm, 0.55 mm, 0.6 mm, 0.65 mm, 0.7 mm, 0.75 mm, 0.8 mm, 0.85 mm or 0.9 mm; the transparent polyolefin heat-shrinkable layer 2 preferably has a light transmittance of 60 to 75%, and specifically may be 60%, 61%, 62%, 63%, 64%, 65%, 66%, 67%, 68%, 69%, 70%, 71%, 72%, 73%, 74%, or 75%.
In one embodiment of the present invention, the shrinkage ratio of the heat shrinkable sleeve is preferably (2-4): 1, and specifically may be 2:1, 3:1 or 4: 1. In the present invention, the shrinkage ratio is the ratio of the inner diameter of the heat shrinkable sleeve before and after heat shrinkage.
In one embodiment provided by the present invention, the radial shrinkage rate of the heat shrinkable sleeve under the test condition of 130 ℃/2min is not less than 50%; the axial shrinkage rate of the heat shrinkable sleeve under the test condition of 130 ℃/2min is less than or equal to 10 percent.
In one embodiment of the present invention, the shore hardness of the heat shrinkable sleeve is less than or equal to 70D. In one embodiment of the present invention, the water absorption of the heat shrinkable sleeve is less than or equal to 0.2%. In one embodiment of the present invention, the tensile strength of the heat shrinkable sleeve is greater than or equal to 14 MPa. In one embodiment of the present invention, the thermal shrinkage sleeve has an elongation at break of 350% or more. In one embodiment of the present invention, the shear strength of the heat shrinkable sleeve is greater than or equal to 7.2 MPa.
In one embodiment provided by the present invention, the thermal aging performance of the thermal shrinkage sleeve is tested, the tensile strength of the thermal shrinkage sleeve is not less than 13MPa under the test condition of 158 +/-2 ℃/168hr, and the elongation at break of the thermal shrinkage sleeve is not less than 400% under the test condition of 158 +/-2 ℃/168 hr.
In the utility model discloses in, when using, at first with the thermal contraction sleeve 6 cover before the shrink to the optical cable joint 4 department of the optical cable 3 that is being continued, then carry out the heating shrinkage to the thermal contraction sleeve, the thermal contraction sleeve 5 after the shrink is tight wraps up on the optical cable 3, protects optical cable joint 4.
The utility model provides an optical cable continues with compound heat shrink sleeve's inlayer material has fine waterproof nature sealing performance and elasticity, and outer material has better heat shrinkage, elasticity and mechanical strength, consequently the utility model provides a heat shrink sleeve can demonstrate higher waterproof sealing performance, heat shrinkage, elasticity and mechanical strength. Furthermore, because the utility model provides an inlayer and outer material of heat shrink sleeve are transparent, consequently the utility model provides a heat shrink sleeve also has better transparency. The utility model provides a heat shrink sleeve can be fine satisfy the optical cable requirement of continuing, can be in the optical cable connection by wide application.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (6)
1. A composite thermal contraction sleeve for optical cable connection is characterized by comprising:
a transparent hot melt hose; the thickness of the pipe wall of the transparent hot melt rubber pipe is 0.25-0.8 mm; the softening temperature of the transparent hot-melt rubber tube is 80-90 ℃; the melt index of the transparent hot melt adhesive tube is 105-110 g/10 min;
and the transparent polyolefin thermal contraction layer is coated on the outer surface of the transparent hot melt rubber tube.
2. The heat-shrinkable sleeve of claim 1, wherein the transparent heat-fusible tube has a light transmittance of 60 to 75%.
3. The heat shrinkable sleeve of claim 1, wherein the peel strength of the transparent hot melt tube is not less than 50N/25 mm.
4. The heat shrinkable sleeve of claim 1, wherein the transparent polyolefin heat shrinkable layer has a thickness of 0.3 to 0.9 mm.
5. The heat shrinkable sleeve of claim 1, wherein the transparent polyolefin heat shrinkable layer has a light transmittance of 60 to 75%.
6. The heat shrinkable sleeve of claim 1, wherein the shrinkage ratio of the heat shrinkable sleeve is (2-4): 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920886632.0U CN210041300U (en) | 2019-06-13 | 2019-06-13 | Composite heat-shrinkable sleeve for optical cable connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920886632.0U CN210041300U (en) | 2019-06-13 | 2019-06-13 | Composite heat-shrinkable sleeve for optical cable connection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210041300U true CN210041300U (en) | 2020-02-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920886632.0U Active CN210041300U (en) | 2019-06-13 | 2019-06-13 | Composite heat-shrinkable sleeve for optical cable connection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210041300U (en) |
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2019
- 2019-06-13 CN CN201920886632.0U patent/CN210041300U/en active Active
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