CN202937994U - Heat shrink tubing - Google Patents
Heat shrink tubing Download PDFInfo
- Publication number
- CN202937994U CN202937994U CN 201220509730 CN201220509730U CN202937994U CN 202937994 U CN202937994 U CN 202937994U CN 201220509730 CN201220509730 CN 201220509730 CN 201220509730 U CN201220509730 U CN 201220509730U CN 202937994 U CN202937994 U CN 202937994U
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- CN
- China
- Prior art keywords
- layer
- heat
- shrinkable
- bush
- foam layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model relates to the technical field of electric wire and cable accessories, in particular to a heat shrink tubing. Ordinary heat shrink tubing is in a single layer and solid structure, the utility model discloses a heat shrink tubing with a foam layer structure. The heat shrink tubing with the foam layer structure is in a two-layer structure of a solid layer and a foam layer, or in a three-layer structure of a solid layer, a foam layer and a solid layer, wherein all layers can be an integral body, independent to one other or partly independent, the inner surface of the inner layer can either omit a glue layer or be provided with the glue layer so as to improve the sealing performance. The heat shrink tubing with the foam layer structure can be processed into tubular, sheet or strip shapes and is particular applicable to occasions where good bend property and flexibility are needed, the density is low, the weight is light and the construction is convenient.
Description
Technical field
The utility model relates to electric wire attachment technique field, is specifically related to a kind of heat-shrinkable T bush.
Background technique
Along with the appearance of crosslinking with radiation material contracting with heat, heat-shrinkable product is able to fast development, and heat-shrinkable T bush also becomes a large matured product gradually.Due to its good covering property, sealing, heat-shrinkable T bush be widely used in continuing of cable, pipeline and anticorrosion in.
Common heat-shrinkable T bush is the individual layer solid construction of homogeneous, by prepare burden, extrude, cross-linking radiation, heating process of expansion, obtain the heat-shrinkable T bush product.Its material is generally high molecular polymer, as polyethylene, PVC＝polyvinyl chloride, polyester, chlorine fluoride ethene etc.Sealing when continuing in order to increase usually applies or extrudes one deck at the internal surface of individual layer solid construction and contains glue-line.
But, no matter be individual layer solid construction or with the two-layer solid construction of glue-line, its hardness is all larger, soft not.At some special occasions, such as cable or pipeline corner, common heat-shrinkable T bush bending properties is relatively poor, namely allows to inadequate coating after the sleeve pipe thermal shrinkage, also may due to sleeve pipe and the stickiness that is wrapped by between thing inadequate, sealing is not good enough.
Summary of the invention
In order to address the above problem, the utility model provides a kind of heat-shrinkable T bush of new structure, can increase the ductility of heat-shrinkable T bush, solves heat-shrinkable T bush in the application of some special occasions.
In order to reach goal of the invention, the technical solution adopted in the utility model is:
Heat-shrinkable T bush of the present utility model is characterized in that the structure with foam layer.
Heat-shrinkable T bush of the present utility model, described structure with foam layer can be double-layer structure, also can be three-decker.
Further, described double-layer structure, ecto-entad is followed successively by: solid layer, foam layer.
Further, described three-decker, ecto-entad is followed successively by: solid layer, foam layer, solid layer.
Heat-shrinkable T bush of the present utility model, described band foam layer structure, according to the different requirements of sealing, its inwall can apply or extrude glue-line, also can there is no glue-line.
Heat-shrinkable T bush of the present utility model can be according to using needs to be processed into tubulose, sheet or band shape.
Common heat-shrinkable T bush is the individual layer solid construction, namely is made of the solid homogenous material of one deck.The common processing process of this heat-shrinkable T bush comprises: prepare burden, extrude, cross-linking radiation, add thermal enlargement.But common heat-shrinkable T bush hardness is larger, and ductility is relatively poor, makes it be difficult to form desirable bending in some special occasion, when cable or duct splice, namely allow to inadequate coating after the sleeve pipe thermal shrinkage, also may due to sleeve pipe and the stickiness that is wrapped by between thing inadequate, sealing is not good enough.The utility model heat-shrinkable T bush replaces simple solid construction with the structure with foam layer, namely adopts solid layer+foam layer (being called for short the skin bubble structure) or solid layer+foam layer+solid layer (being called for short the skin foam skin structure).Although this structure is existing the application in the insulation of electric wire, also there is no this class formation in heat-shrinkable T bush.This structure can directly reduce the hardness of sleeve pipe, increases the ductility of sleeve pipe, is easy to bending when making operation.
Compared with prior art, the beneficial effects of the utility model are the hardness that has reduced heat-shrinkable T bush, have increased the ductility of heat-shrinkable T bush, have improved bending properties.And, with the Structure Decreasing of foam layer the density of material, can reduce the weight of heat-shrinkable T bush, economical with materials reduces the intensity of construction.
Below in conjunction with the embodiment of accompanying drawing illustrated embodiment, foregoing of the present utility model is described in further detail again.But this should be interpreted as that the scope of the above-mentioned theme of the utility model only limits to following example.Do not breaking away from the above-mentioned technological thought situation of the utility model, various replacements or change according to ordinary skill knowledge and customary means are made all should be included in scope of the present utility model.
Description of drawings
Fig. 1, Fig. 2, Fig. 3 and Fig. 4 are the cross section structure schematic diagram of heat-shrinkable T bush of the present utility model.
Fig. 1 is the cross section structure schematic diagram with the tubulose heat-shrinkable T bush of the double-layer structure of foam layer.
Fig. 2 is the cross section structure schematic diagram with the tubulose heat-shrinkable T bush of the three-decker of foam layer.
Fig. 3 is the cross section structure schematic diagram with the sheet of the double-layer structure of foam layer or banded heat-shrinkable T bush.
Fig. 4 is the cross section structure schematic diagram with the sheet of the three-decker of foam layer or banded heat-shrinkable T bush.
In figure, 1. solid layer, 2. foam layer, 3. solid layer.
Embodiment
Tubulose heat-shrinkable T bush of the present utility model, its manufacturing process flow is the same with ordinary hot Heat-Shrinkable Tubings manufacturing process flow, mainly comprises: prepare burden, extrude, cross-linking radiation, add thermal enlargement.But when extruding, the ordinary hot Heat-Shrinkable Tubings only needs individual layer to extrude, and heat-shrinkable T bush of the present utility model forms two-layer or three-decker extruding operation.This two-layer or structures three layers can adopt the co-extrusion mode to extrude, but also each layer extruded respectively formation.Regardless of being co-extrusion or extruding respectively between layers certain bonding force to be arranged, can not layering.Solid layer (1) and solid layer (3) all adopt common expressing technique, are extruded into tubulose, sheet or band shape by extruder.Foam layer (2) can adopt physical blowing and chemical blowing expressing technique to form foam layer, also can adopt solid extruding, and then forms foam layer with the irradiation foam process.Extrude complete after, through irradiation, expansion process, form the heat-shrinkable T bush product.Heat-shrinkable T bush of the present utility model can be according to using needs to be processed into tubulose, sheet or band shape.Tubulose, sheet or banded product can form when extruding, also can be after product augmentation, by the way formation of machine cuts.The product of sheet also can not adopt expressing technique, and adopts the laminating technology manufacturing.
Claims (6)
1. a heat-shrinkable T bush, is characterized in that, with the structure of foam layer.
2. heat-shrinkable T bush according to claim 1, is characterized in that, described structure with foam layer can be double-layer structure, also can be three-decker.
3. heat-shrinkable T bush according to claim 2, is characterized in that, described double-layer structure, and ecto-entad is followed successively by: solid layer, foam layer.
4. heat-shrinkable T bush according to claim 3, is characterized in that, described three-decker, and ecto-entad is followed successively by: solid layer, foam layer, solid layer.
5. according to claim 3 or 4 described heat-shrinkable T bushs, is characterized in that, described band foam layer structure, and according to the different requirements of sealing, its inwall can apply or extrude glue-line, also can there is no glue-line.
6. heat-shrinkable T bush according to claim 5, is characterized in that, can be according to using needs to be processed into tubulose, sheet or band shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220509730 CN202937994U (en) | 2012-10-08 | 2012-10-08 | Heat shrink tubing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220509730 CN202937994U (en) | 2012-10-08 | 2012-10-08 | Heat shrink tubing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202937994U true CN202937994U (en) | 2013-05-15 |
Family
ID=48322231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220509730 Expired - Lifetime CN202937994U (en) | 2012-10-08 | 2012-10-08 | Heat shrink tubing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202937994U (en) |
-
2012
- 2012-10-08 CN CN 201220509730 patent/CN202937994U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130515 |