CN104166198B - The manufacturing process of high intensity foaming packing gasket - Google Patents
The manufacturing process of high intensity foaming packing gasket Download PDFInfo
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- CN104166198B CN104166198B CN201410344859.4A CN201410344859A CN104166198B CN 104166198 B CN104166198 B CN 104166198B CN 201410344859 A CN201410344859 A CN 201410344859A CN 104166198 B CN104166198 B CN 104166198B
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Abstract
The present invention discloses a kind of manufacturing process of high intensity foaming packing gasket, by 30 parts of low density polyethylene (LDPE) that melt index is 0.03 ~ 0.09 g/10min, the high density polyethylene (HDPE) that melt index is 1.8 ~ 3.2 g/10min（First）30 parts, the high density polyethylene (HDPE) that melt index is 5 ~ 9 g/10min（Second）40 parts, 15 parts of calcium carbonate superfine powder is positioned over high-speed mixer and mixing and is formed uniformly mixture；Packing gasket granule material heated melting in an extruder, nitrogen is injected under a certain pressure wherein simultaneously, gas is released using decompression, so as to generate the uniform bubble combined closely with internal layer, forms buried layer in the polyethylene foam gasket for packing body that frothing percentage is 10~80%.The present invention reduces harmful effect of the use to plastics final performance of multiclass auxiliary agent, as the foaming packing gasket body obtained by the particle as buried layer, can combine closely with plastic film surrounding layer, increase tension, the lateral compressive strength of gasket for packing.
Description
Technical field
The present invention relates to foaming packing gasket more particularly to a kind of manufacturing process of high intensity foaming packing gasket.
Background technology
Existing optical cable with gasket for packing majority be high density Insulation Material squeeze out solid cord, due to hardness height, with it is other
It is larger that element is stranding into the extruding force being subject in machine during cable core altogether, limits high-speed production, and it easily squeezes optical fiber list
Other elements such as the Loose tube of member, deform cable core, influence the roundness of optical cable.Secondly, solid cord raw material dosage is big, manufacture
Of high cost, its own weight is big, causes optical cable transportation cost higher.In addition solid cord hardness is big, and external force resistance resiliency is poor, protects
Protect less effective.
For the deficiency of optical cable hatching solid rope, foaming filling rope for optical cables comes into being, because cost of material is low,
The advantages that protecting effect is good, light-weight and be widely noticed, but at present about its manufacturing method and market application report relatively
It is few, and the data of such gasket for packing particulate material is even more very few, and there is problems.As CN101382626A is disclosed
The patent of invention of a kind of " optical cable foaming packing gasket granule material and its production method ", packing gasket granule material in the patented technology
Raw material has low density polyethylene (LDPE), high density polyethylene (HDPE), polypropylene, polyethylene wax, stearic acid, calcium stearate and tetrapentaerythritol fat
Deng component is more, and proportional difference is larger, weighs trouble, is not easy to disperse, it is more difficult to be uniformly mixed；And due to each component unit price
Costly, manufacture cost still quite has pressure；In addition, the addition of a variety of auxiliary agents uses and easily the final performance of product is generated not
Good influence causes product air entrapment to be unevenly distributed, and can leave small molecule residue in reproduced goods, influences the mechanical property of product
Energy.
Invention content
The object of the present invention is to provide a kind of manufacturing process of high intensity foaming packing gasket, weigh conveniently, save manpower；
Each component ratio is more close, is easily dispersed uniformly；Polyvinyl resin, calcium carbonate and nucleation masterbatch are contained only in raw material, is reduced
Harmful effect of the use of multiclass auxiliary agent to plastics final performance；The addition of certain proportion calcium carbonate effectively reduces material
Cost；As the foaming packing gasket body obtained by the particle as buried layer, can combine closely with plastic film surrounding layer, so as to make
Gasket for packing degree of drying and air filling degree it is more constant, increase tension, the lateral compressive strength of gasket for packing, be relatively beneficial to
Its protective effect to light wave guide；
In order to achieve the above objectives, the technical solution adopted by the present invention is：A kind of manufacturing process of high intensity foaming packing gasket,
The high intensity foaming packing gasket is obtained by the component of following parts by weight by physical blowing：
60 parts of foamed material semi-finished product,
High density polyethylene (HDPE)（First）40 parts,
It is nucleated 1 part of masterbatch；
The foamed material semi-finished product are made of the component of following parts by weight:
Melt index is 0.03 ~ 0.09 30 parts of low density polyethylene (LDPE),
Melt index is 1.8 ~ 3.2 high density polyethylene (HDPE)（First）30 parts,
Melt index is 5 ~ 9 high density polyethylene (HDPE)（Second）40 parts,
15 parts of micron-class superfine calcium carbonate；
The foamed material semi-finished product melt flow rate (MFR) is 0.65 ± 0.20g/10min；
Include the following steps：
Step 1: by 30 parts of low density polyethylene (LDPE) that melt index is 0.03 ~ 0.09 g/10min, melt index be 1.8 ~
The high density polyethylene (HDPE) of 3.2 g/10min（First）30 parts, the high density polyethylene (HDPE) that melt index is 5 ~ 9 g/10min（Second）40
Part, 15 parts of calcium carbonate superfine powder are positioned over high-speed mixer and mixing and are formed uniformly mixture；
Step 2: the mixture of step 1 is sent into double screw extruder, in 180 ~ 230 DEG C of extruder barrel temperature
From low to high Ф 2.5mm strips are extruded under the conditions of multistage heating, 230 DEG C of head temperature；
Step 3: the strip of step 2 is dried after water cooling tank cools down using wind turbine, then, it is cut into length
3mm, Ф 2.5mm small columns grain are as foamed material semi-finished product；
Step 4: by 60 parts of foamed material semi-finished product described in step 3, high density polyethylene (HDPE)（First）40 parts and nucleation masterbatch 1
Part, three is uniformly mixed to the particulate material for obtaining the foaming packing gasket by high mixer；
Step 5: the packing gasket granule material heated melting in an extruder, while nitrogen is noted under a certain pressure
Enter wherein, gas is released using decompression, so as to generate the uniform bubble combined closely with internal layer, it is 10 to form frothing percentage
Buried layer in~80% polyethylene foam gasket for packing body；
Step 6: buried layer is after high speed extrusion at a temperature of setting in the polyethylene foam gasket for packing body, outer layer warp
After PBT resin cladding, the polyethylene foam gasket for packing that buried layer is combined closely with clad is formed.
Due to the utilization of above-mentioned technical proposal, the present invention has following advantages compared with prior art：
1. the manufacturing process of high intensity foaming packing gasket of the present invention, gasket for packing hardness is moderate, the coefficient of expansion is small, into
It is not easy to make other deformed elements around during cable, ensures cable core roundness, and since foaming packing gasket is softer, be other members
It is smaller that part is stranding into the extruding force that is subject to inside equipment when cable core squeezes out altogether, can be with high-speed production；It is secondly as foam filled
Density of restricting is small, light specific gravity so that the weight of unit length optical cable finished product can reduce the transportation cost of optical cable；Again, it is foam filled
Material consumption of restricting is few, can reduce manufacture cost, calcium carbonate unit price is relatively low, significantly reduces cost（Although calcium carbonate
Using the weight for increasing gasket for packing itself to a certain extent, but due in this patent gasket for packing be foaming packing gasket, therefore phase
Still there is greater advantage in weight compared with entity rope）；Constituent species are relatively fewer, and unit price is relatively low compared to each analog assistant, thus
Whole manufacture cost has greater advantage；Each composition ratio difference is smaller, convenient for weighing, saves artificial.
2. the manufacturing process of high intensity foaming packing gasket of the present invention, gasket for packing component ratio proportion difference is smaller,
Convenient for weighing, manual operation error is smaller, conducive to ensureing the stability of product quality during batch production；Secondly, it is helped without all kinds of
Agent, the use of each analog assistant easily generate harmful effect to the final performance of product, product air entrapment are caused to be unevenly distributed, and meeting
Small molecule residue is left in product, influences Mechanical Properties of Products.
Specific embodiment
With reference to embodiment, the invention will be further described：
Embodiment：A kind of manufacturing process of high intensity foaming packing gasket, the high intensity foaming packing gasket is by following weight
The component of part is obtained by physical blowing：
60 parts of foamed material semi-finished product,
High density polyethylene (HDPE)（First）40 parts,
It is nucleated 1 part of masterbatch；
The foamed material semi-finished product are made of the component of following parts by weight:
Melt index is 0.03 ~ 0.09 30 parts of low density polyethylene (LDPE),
Melt index is 1.8 ~ 3.2 high density polyethylene (HDPE)（First）30 parts,
Melt index is 5 ~ 9 high density polyethylene (HDPE)（Second）40 parts,
15 parts of micron-class superfine calcium carbonate；
Above-mentioned foamed material semi-finished product melt flow rate (MFR) is 0.65 ± 0.20g/10min.
Include the following steps：
Step 1: by 30 parts of low density polyethylene (LDPE) that melt index is 0.03 ~ 0.09 g/10min, melt index be 1.8 ~
The high density polyethylene (HDPE) of 3.2 g/10min（First）30 parts, the high density polyethylene (HDPE) that melt index is 5 ~ 9 g/10min（Second）40
Part, 15 parts of calcium carbonate superfine powder are positioned over high-speed mixer and mixing and are formed uniformly mixture；
Step 2: the mixture of step 1 is sent into double screw extruder, in 180 ~ 230 DEG C of extruder barrel temperature
From low to high Ф 2.5mm strips are extruded under the conditions of multistage heating, 230 DEG C of head temperature；
Step 3: the strip of step 2 is dried after water cooling tank cools down using wind turbine, then, it is cut into length
3mm, Ф 2.5mm small columns grain are as foamed material semi-finished product；
Step 4: by 60 parts of foamed material semi-finished product described in step 3, high density polyethylene (HDPE)（First）40 parts and nucleation masterbatch 1
Part, three is uniformly mixed to the particulate material for obtaining the foaming packing gasket by high mixer；
Step 5: the packing gasket granule material heated melting in an extruder, while nitrogen is noted under a certain pressure
Enter wherein, gas is released using decompression, so as to generate the uniform bubble combined closely with internal layer, it is 10 to form frothing percentage
Buried layer in~80% polyethylene foam gasket for packing body；
Step 6: buried layer is after high speed extrusion at a temperature of setting in the polyethylene foam gasket for packing body, outer layer warp
After PBT resin cladding, the polyethylene foam gasket for packing that buried layer is combined closely with clad is formed.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art
Scholar can understand present disclosure and implement according to this, and it is not intended to limit the scope of the present invention.It is all according to the present invention
The equivalent change or modification that Spirit Essence is made, should be covered by the protection scope of the present invention.
Claims (1)
1. a kind of manufacturing process of high intensity foaming packing gasket, it is characterised in that：The high intensity foaming packing gasket is by following heavy
The component for measuring part is obtained by physical blowing：
60 parts of foamed material semi-finished product,
Melt index is 40 parts of the high density polyethylene (HDPE) of 1.8 ~ 3.2g/10min,
It is nucleated 1 part of masterbatch；
The foamed material semi-finished product are made of the component of following parts by weight:
Melt index is 0.03 ~ 0.09 30 parts of low density polyethylene (LDPE),
Melt index is 1.8 ~ 3.2 30 parts of high density polyethylene (HDPE),
Melt index is 5 ~ 9 40 parts of high density polyethylene (HDPE),
15 parts of micron-class superfine calcium carbonate；
The foamed material semi-finished product melt flow rate (MFR) is 0.65 ± 0.20g/10min；
Include the following steps：
Step 1: it is 1.8 ~ 3.2 by 30 parts of low density polyethylene (LDPE) that melt index is 0.03 ~ 0.09 g/10min, melt index
30 parts of the high density polyethylene (HDPE) of g/10min, 40 parts of high density polyethylene (HDPE), the calcium carbonate superfine powder that melt index is 5 ~ 9 g/10min
15 parts are positioned over high-speed mixer and mixing and are formed uniformly mixture；
Step 2: the mixture of step 1 is sent into double screw extruder, in 180 ~ 230 DEG C of extruder barrel temperature by low
Ф 2.5mm strips are extruded under the conditions of to high multistage heating, 230 DEG C of head temperature；
Step 3: the strip of step 2 is dried after water cooling tank cools down using wind turbine, then, be cut into long 3mm,
Ф 2.5mm small columns grains are as foamed material semi-finished product；
Step 4: 60 parts of foamed material semi-finished product described in step 3, the high density that melt index is 1.8 ~ 3.2g/10min are gathered
Three, the particulate material for obtaining the foaming packing gasket is uniformly mixed by high mixer by 40 parts of ethylene and 1 part of masterbatch of nucleation；
Step 5: the packing gasket granule material heated melting, while nitrogen is injected it under a certain pressure in an extruder
In, release gas using decompression, so as to generate the uniform bubble combined closely with internal layer, formed frothing percentage for 10~
Buried layer in 80% polyethylene foam gasket for packing body；
Step 6: buried layer is after high speed extrusion at a temperature of setting in the polyethylene foam gasket for packing body, outer layer is through PBT trees
After fat cladding, the polyethylene foam gasket for packing that buried layer is combined closely with clad is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410344859.4A CN104166198B (en) | 2012-12-13 | 2012-12-13 | The manufacturing process of high intensity foaming packing gasket |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410344859.4A CN104166198B (en) | 2012-12-13 | 2012-12-13 | The manufacturing process of high intensity foaming packing gasket |
| CN201210536344.5A CN102981232B (en) | 2012-12-13 | 2012-12-13 | External force resistant multi-waveguide optical cable |
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 |
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| Publication Number | Publication Date |
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| CN104166198A CN104166198A (en) | 2014-11-26 |
| CN104166198B true CN104166198B (en) | 2018-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410344859.4A Active CN104166198B (en) | 2012-12-13 | 2012-12-13 | The manufacturing process of high intensity foaming packing gasket |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1230481A (en) * | 1998-03-31 | 1999-10-06 | 四川联合大学 | Preparation of foamed insulating polyethylene material for coaxial cable |
| CN101012323A (en) * | 2007-02-01 | 2007-08-08 | 徐晓冰 | Polythene physics foaming material and preparing method thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002265708A (en) * | 2001-03-13 | 2002-09-18 | Fujikura Ltd | Flame-retardant resin composition |
| CN201251641Y (en) * | 2008-09-09 | 2009-06-03 | 龙泽飞 | Film enveloped optical fiber cable used foamed filler yarn |
| CN101382626B (en) * | 2008-09-09 | 2010-06-02 | 龙泽飞 | Optical cable foaming packing gasket granule material and method for producing same |
-
2012
- 2012-12-13 CN CN201410344859.4A patent/CN104166198B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1230481A (en) * | 1998-03-31 | 1999-10-06 | 四川联合大学 | Preparation of foamed insulating polyethylene material for coaxial cable |
| CN101012323A (en) * | 2007-02-01 | 2007-08-08 | 徐晓冰 | Polythene physics foaming material and preparing method thereof |
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| Publication number | Publication date |
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| CN104166198A (en) | 2014-11-26 |
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Effective date of registration: 20220126 Address after: 215234 88 Hengtong Road, seven Du Town, Wujiang District, Suzhou, Jiangsu Patentee after: SUZHOU HENGLI COMMUNICATION MATERIAL Co.,Ltd. Patentee after: Jiangsu Hengtong Cable Technology Co., Ltd Address before: 215234 88 Hengtong Road, seven Du Town, Wujiang City, Changzhou, Jiangsu Patentee before: SUZHOU HENGLI COMMUNICATION MATERIAL Co.,Ltd. |
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