CN104167257A - Tensile filler rope used for optical cable - Google Patents
Tensile filler rope used for optical cable Download PDFInfo
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- CN104167257A CN104167257A CN201410344989.8A CN201410344989A CN104167257A CN 104167257 A CN104167257 A CN 104167257A CN 201410344989 A CN201410344989 A CN 201410344989A CN 104167257 A CN104167257 A CN 104167257A
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Abstract
The invention discloses a tensile filler rope used for an optical cable. The tensile filler rope is obtained through physical foaming of components of the following parts by weight: 50 parts of a semi-finished product of a foaming material, 50 parts of a high-density polyethylane (A) and 1 part of a nucleating master batch. The semi-finished product of the foaming material includes components of the following parts by weight: 30 parts of a low-density polyethylene, the melt flowing rate of which is 0.03-0.09g/10min, 40 parts of the high-density polyethylene (A), the melt flowing rate of which is 1.8-3.2g/10min, 30 parts of a high-density polyethylene (B), the melt flowing rate of which is 5-9g/10min, and 15 parts of micrometer superfine calcium carbonate. The manufactured tensile filler rope is used as a burial layer which can be closely combined with a plastic thin-film external cladding layer so that the tensile strength and lateral pressure resisting strength of the filler rope are improved.
Description
Technical field
The present invention relates to gasket for packing, relate in particular to a kind of optical cable tension gasket for packing.
Background technology
Optical cable gasket for packing is in stranded process, to fill up room in cable core to make it keep a kind of element of rounding.Existing optical cable is the solid cord that high density Insulation Material is extruded with gasket for packing majority, because hardness is high, the extruding force being subject in machine in the time being stranding into cable core altogether with other element is larger, limit high-speed production, and it easily pushes other elements such as the loose sleeve pipe of fiber unit, make cable core distortion, affect the roundness of optical cable.Secondly, solid cord raw material consumption is large, and manufacturing cost is high, and himself weight is large, causes optical cable cost of transportation higher.In addition solid cord hardness is large, and external force resistance resiliency is poor, and protection effect is not good enough.
For the deficiency of optical cable hatching solid rope; foaming filling rope for optical cables arises at the historic moment; its because cost of material is low, protect the advantage such as effective, lightweight extensively concerned; but relative less with the report of market application about its manufacture method at present; and such gasket for packing is very few especially by the data of particulate material, and exist problems.As CN101382626A discloses the patent of invention of a kind of " optical cable foaming packing gasket granule material and production method thereof ", in this patented technology, the raw material of packing gasket granule material has low density polyethylene (LDPE), high density polyethylene (HDPE), polypropylene, Tissuemat E, stearic acid, calcium stearate and four pentaerythritol resins etc., its component is more, proportional difference is larger, take trouble, be difficult for disperseing more difficult mixing; And because each component unit price is all comparatively expensive, manufacturing cost still quite has pressure; In addition, the interpolation of multiple auxiliary agent is used the easily final performance to product to produce harmful effect, causes goods air entrapment skewness, and can in reproduced goods, leave little molecule residue, affects the mechanical property of goods.
Summary of the invention
The object of this invention is to provide a kind of optical cable tension gasket for packing, it takes conveniently, saves manpower; Each component ratio is comparatively close, is easy to be uniformly dispersed; In raw material, only contain polyvinyl resin, calcium carbonate and nucleation masterbatch, the harmful effect of the use that has reduced multiclass auxiliary agent to the final performance of plastics; The interpolation of certain proportion calcium carbonate effectively reduces the cost of material; By the prepared foaming packing gasket body of this particle as buried layer, can combine closely with plastic film surrounding layer, thereby make the degree of drying of gasket for packing and the filling degree of air more constant, increase tension, the lateral pressure resistant intensity of gasket for packing, be more of value to its protective effect to light wave guide;
For achieving the above object, the technical solution used in the present invention is: a kind of optical cable tension gasket for packing, and described gasket for packing is obtained through physical blowing by the component of following weight portion:
50 parts of foamed material semi-finished product,
50 parts of high density polyethylene (HDPE)s (first),
1 part of nucleation masterbatch;
Described foamed material semi-finished product are made up of the component of following weight portion:
Melt flow rate (MFR) is 30 parts of the low density polyethylene (LDPE)s of 0.03 ~ 0.09 g/10min,
Melt flow rate (MFR) is 40 parts of the high density polyethylene (HDPE)s (first) of 1.8 ~ 3.2 g/10min,
Melt flow rate (MFR) is 30 parts of the high density polyethylene (HDPE)s (second) of 5 ~ 9 g/10min,
15 parts, micron-class superfine calcium carbonate.
Above-mentioned foamed material semi-finished product melt flow rate (MFR) is 0.65 ± 0.20g/10min.
Due to the utilization of technique scheme, the present invention compared with prior art has following advantages:
1. optical cable of the present invention tension gasket for packing, its gasket for packing hardness is moderate, the coefficient of expansion is little, other deformed element around being difficult for making in stranding process, ensure cable core roundness, and because foaming packing gasket is softer, be that other element is stranding into the extruding force being subject at device interior when cable core is extruded altogether less, can high-speed production; Secondly, because foaming packing gasket density is little, light specific gravity, make the weight of unit length optical cable finished product, can reduce the cost of transportation of optical cable; Again, foaming packing gasket material consumption is few, can reduce manufacturing cost, calcium carbonate unit price is relatively low, effectively reduce cost (although the use of calcium carbonate has increased the weight of gasket for packing self to a certain extent, but because gasket for packing in this patent is foaming packing gasket, in weight, still have greater advantage therefore compare entity rope); Component kind is relatively less, and its unit price is on the low side compared to each analog assistant, thereby overall manufacturing cost has greater advantage; Each proportion of composing difference is less, is convenient to take, and saves artificial.
2. optical cable of the present invention tension gasket for packing, its gasket for packing component ratio proportion difference is less, is convenient to take, and manual operation error is less, is beneficial to the stability that ensures product quality when batch production; Secondly,, not containing each analog assistant, the use of each analog assistant easily produces harmful effect to the final performance of product, causes goods air entrapment skewness, and can in goods, leave little molecule residue, affects Mechanical Properties of Products.
Embodiment
Below in conjunction with embodiment, the invention will be further described:
Embodiment: a kind of optical cable tension gasket for packing, described tension gasket for packing is obtained through physical blowing by the component of following weight portion:
50 parts of foamed material semi-finished product,
50 parts of high density polyethylene (HDPE)s (first),
1 part of nucleation masterbatch;
Described foamed material semi-finished product are made up of the component of following weight portion:
Melt flow rate (MFR) is 30 parts of the low density polyethylene (LDPE)s of 0.03 ~ 0.09 g/10min,
Melt flow rate (MFR) is 40 parts of the high density polyethylene (HDPE)s (first) of 1.8 ~ 3.2 g/10min,
Melt flow rate (MFR) is 30 parts of the high density polyethylene (HDPE)s (second) of 5 ~ 9 g/10min,
15 parts, micron-class superfine calcium carbonate;
Above-mentioned foamed material semi-finished product melt flow rate (MFR) is 0.65 ± 0.20g/10min.
The manufacture method of tension gasket for packing for above-mentioned optical cable, comprises the following steps:
Step 1,15 parts of melt index is 30 parts of the low density polyethylene (LDPE)s of 0.03 ~ 0.09 g/10min, 40 parts of high density polyethylene (HDPE)s (first) that melt index is 1.8 ~ 3.2 g/10min, melt index is 5 ~ 9 g/10min 30 parts of high density polyethylene (HDPE)s (second), calcium carbonate superfine powders are positioned over to high-speed mixer and mixing evenly form mixture;
Step 2, the described mixture of step 1 is sent in double screw extruder, multistagely from low to high heated 180 ~ 230 DEG C of extruder barrel temperature, to be extruded into Ф 2.5mm under 230 DEG C of conditions of head temperature rectangular;
Step 3, step 2 described rectangular dried through blower fan after water cooling tank is cooling again, then, be cut into long 3mm, Ф 2.5mm small column grain as foamed material semi-finished product;
Step 4, by 1 part of 50 parts of 50 parts of foamed material semi-finished product described in step 3, high density polyethylene (HDPE) (first) and nucleation masterbatch, by high mixer, three is mixed to the particulate material that obtains described foaming packing gasket;
Step 5, described packing gasket granule material in extruder through heating and melting, nitrogen is injected wherein under certain pressure simultaneously, discharge gas through decompression again, thereby generate the uniform bubble of combining closely with internal layer, the polyethylene foam gasket for packing body buried layer that formation frothing percentage is 10～80%;
Step 6, described polyethylene foam gasket for packing body buried layer are at the temperature of setting after high speed extrusion, and its skin, after PBT resin-coating, forms the polyethylene foam gasket for packing that buried layer and coating layer are combined closely.
Above-described embodiment is only explanation technical conceive of the present invention and feature, and its object is to allow person skilled in the art can understand content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences that Spirit Essence is done according to the present invention change or modify, within all should being encompassed in protection scope of the present invention.
Claims (2)
1. an optical cable tension gasket for packing, is characterized in that: described tension gasket for packing is obtained through physical blowing by the component of following weight portion:
50 parts of foamed material semi-finished product,
50 parts of high density polyethylene (HDPE)s (first),
1 part of nucleation masterbatch;
Described foamed material semi-finished product are made up of the component of following weight portion:
Melt flow rate (MFR) is 30 parts of the low density polyethylene (LDPE)s of 0.03 ~ 0.09 g/10min,
Melt flow rate (MFR) is 40 parts of the high density polyethylene (HDPE)s (first) of 1.8 ~ 3.2 g/10min,
Melt flow rate (MFR) is 30 parts of the high density polyethylene (HDPE)s (second) of 5 ~ 9 g/10min,
15 parts, micron-class superfine calcium carbonate.
2. optical cable according to claim 1 tension gasket for packing, is characterized in that: described foamed material semi-finished product melt flow rate (MFR) is 0.65 ± 0.20g/10min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410344989.8A CN104167257B (en) | 2012-12-13 | 2012-12-13 | Optical cable tension gasket for packing |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210536344.5A CN102981232B (en) | 2012-12-13 | 2012-12-13 | External force resistant multi-waveguide optical cable |
| CN201410344989.8A CN104167257B (en) | 2012-12-13 | 2012-12-13 | Optical cable tension gasket for packing |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210536344.5A Division CN102981232B (en) | 2012-12-13 | 2012-12-13 | External force resistant multi-waveguide optical cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104167257A true CN104167257A (en) | 2014-11-26 |
| CN104167257B CN104167257B (en) | 2017-08-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410344989.8A Active CN104167257B (en) | 2012-12-13 | 2012-12-13 | Optical cable tension gasket for packing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104167257B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002265708A (en) * | 2001-03-13 | 2002-09-18 | Fujikura Ltd | Flame-retardant resin composition |
| CN101382626A (en) * | 2008-09-09 | 2009-03-11 | 龙泽飞 | Optical cable foaming packing gasket granule material and method for producing same |
| CN201251641Y (en) * | 2008-09-09 | 2009-06-03 | 龙泽飞 | Film enveloped optical fiber cable used foamed filler yarn |
-
2012
- 2012-12-13 CN CN201410344989.8A patent/CN104167257B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002265708A (en) * | 2001-03-13 | 2002-09-18 | Fujikura Ltd | Flame-retardant resin composition |
| CN101382626A (en) * | 2008-09-09 | 2009-03-11 | 龙泽飞 | Optical cable foaming packing gasket granule material and method for producing same |
| CN201251641Y (en) * | 2008-09-09 | 2009-06-03 | 龙泽飞 | Film enveloped optical fiber cable used foamed filler yarn |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104167257B (en) | 2017-08-25 |
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Effective date of registration: 20180801 Address after: 215234 88 Hengtong Road, seven Du Town, Wujiang District, Suzhou, Jiangsu Co-patentee after: Suzhou Hengli Communication Materials Co., Ltd. Patentee after: Jiangsu Hengtong Wire And Cable Technology Co., Ltd. Address before: 215234 88 Hengtong Road, seven Du Town, Wujiang City, Changzhou, Jiangsu Patentee before: Suzhou Hengli Communication Materials Co., Ltd. |