CN103035330B - Be applied to foaming packing gasket and the preparation technology thereof of optical cable - Google Patents
Be applied to foaming packing gasket and the preparation technology thereof of optical cable Download PDFInfo
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- CN103035330B CN103035330B CN201210536006.1A CN201210536006A CN103035330B CN 103035330 B CN103035330 B CN 103035330B CN 201210536006 A CN201210536006 A CN 201210536006A CN 103035330 B CN103035330 B CN 103035330B
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0012—Combinations of extrusion moulding with other shaping operations combined with shaping by internal pressure generated in the material, e.g. foaming
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
- B29C48/154—Coating solid articles, i.e. non-hollow articles
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/14—Applications used for foams
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/062—HDPE
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/066—LDPE (radical process)
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- Mechanical Engineering (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Polymers & Plastics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Sealing Material Composition (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a kind of foaming packing gasket and the preparation technology thereof that are applied to optical cable, comprising: foamed material semi-finished product 40 ~ 60 parts, high density polyethylene (HDPE) (first) 40 ~ 60 parts, nucleation masterbatch 1 part; Described foamed material semi-finished product are made up of the component of following weight portion: melt flow rate (MFR) is the low density polyethylene (LDPE) 30 ~ 40 parts of 0.03 ~ 0.09g/10min, melt flow rate (MFR) is the high density polyethylene (HDPE) (first) 30 ~ 40 parts of 1.8 ~ 3.2g/10min, melt flow rate (MFR) is the high density polyethylene (HDPE) (second) 30 ~ 40 parts of 5 ~ 9g/10min, 15 ~ 20 parts, micron-class superfine calcium carbonate.The present invention is easy to be uniformly dispersed; decrease the use of multiclass auxiliary agent to the harmful effect of the final performance of plastics; can combine closely with plastic film surrounding layer; thus make the filling degree of the degree of drying of gasket for packing and air more constant; increase tension, the lateral compressive strength of gasket for packing, be more of value to its protective effect to light wave guide.
Description
Technical field
The present invention relates to the foaming packing gasket and preparation technology thereof that are applied to optical cable, be specifically related to a kind of foaming packing gasket and the preparation technology thereof that are applied to optical cable.
Background technology
Optical cable gasket for packing fills up room in cable core in stranding process to make it keep a kind of element of rounding.Existing optical cable gasket for packing majority is the solid cord that high density Insulation Material is extruded, because hardness is high, the extruding force be subject in machine when being stranding into cable core altogether with other element is larger, limit high-speed production, and it easily extrudes other elements such as the Loose tube of fiber unit, cable core is out of shape, affects the roundness of optical cable.Secondly, solid cord raw material dosage 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 protected 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; it is extensively concerned because of advantages such as cost of material are low, protected effect is good, lightweight; but it is relative with the report that market is applied less about its manufacture method at present; and the data of such gasket for packing particulate material cans be counted on one's fingers especially, and there are problems.As CN101382626A discloses the patent of invention of one " 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 tetrapentaerythritol fat etc., its component is more, proportional difference is larger, take trouble, not easily disperse, more difficultly to mix; And due to each component unit price all costly, manufacturing cost still quite has pressure; In addition, the interpolation of multiple auxiliary agent uses and easily produces harmful effect to the final performance of product, causes goods air entrapment skewness, and can leave Small molecular residue in reproduced goods, affects the mechanical property of goods.
Summary of the invention
First object of the present invention is to provide a kind of foaming packing gasket being applied to optical cable, and it takes conveniently, saves manpower; Each component ratio is comparatively close, is easy to be uniformly dispersed; Only containing polyvinyl resin, calcium carbonate and nucleation masterbatch in raw material, decrease the use of multiclass auxiliary agent to the harmful effect of the final performance of plastics; The interpolation of certain proportion calcium carbonate effectively reduces the cost of material; Foaming packing gasket body obtained by this particle is as buried layer; can combine closely with plastic film surrounding layer; thus make the filling degree of the degree of drying of gasket for packing and air more constant, increase tension, the lateral compressive strength of gasket for packing, be more of value to its protective effect to light wave guide.
Second object of the present invention is to provide the preparation technology of the above-mentioned foaming packing gasket for optical cable.
For achieving the above object, the technical solution used in the present invention is: a kind of foaming packing gasket being applied to optical cable, and described foaming packing gasket granule material is made up of the component of following weight portion:
Foamed material semi-finished product 40 ~ 60 parts,
High density polyethylene (HDPE) (first) 40 ~ 60 parts,
Nucleation masterbatch 1 part;
Described foamed material semi-finished product are made up of the component of following weight portion:
Melt flow rate (MFR) is the low density polyethylene (LDPE) 30 ~ 40 parts of 0.03 ~ 0.09 g/10min,
Melt flow rate (MFR) is the high density polyethylene (HDPE) (first) 30 ~ 40 parts of 1.8 ~ 3.2 g/10min,
Melt flow rate (MFR) is the high density polyethylene (HDPE) (second) 30 ~ 40 parts of 5 ~ 9 g/10min,
15 ~ 20 parts, micron-class superfine calcium carbonate;
Above-mentioned foamed material semi-finished product melt flow rate (MFR) is 0.65 ± 0.20g/10min.
The above-mentioned preparation technology being applied to the foaming packing gasket of optical cable, comprises the following steps:
Step one, be the low density polyethylene (LDPE) 30 ~ 40 parts of 0.03 ~ 0.09 g/10min by melt flow rate (MFR), the melt flow rate (MFR) high density polyethylene (HDPE) (first) 30 ~ 40 parts that is 1.8 ~ 3.2 g/10min, the melt flow rate (MFR) high density polyethylene (HDPE) (second) 30 ~ 40 parts that is 5 ~ 9 g/10min, calcium carbonate superfine powder 15 ~ 20 parts be positioned over high-speed mixer and mixing and evenly form mixture;
Step 2, the described mixture of step one is sent in double screw extruder, multistagely from low to high to heat extruder barrel temperature 180 ~ 230 DEG C, to be extruded into Ф 2.5mm under head temperature 230 DEG C of conditions rectangular;
Step 3, by step 2 described rectangular through water cooling tank cooling after again through blower fan dry, then, be cut into long 3mm, Ф 2.5mm small column grain as foamed material semi-finished product;
Step 4, by foamed material semi-finished product 40 ~ 60 parts, high density polyethylene (HDPE) (first) 40 ~ 60 parts and nucleation masterbatch 1 part, by high mixer three mixed and obtain described foaming packing gasket granule material.
Step 5, described packing gasket granule material are in an extruder through heating and melting, nitrogen is injected wherein under a certain pressure simultaneously, discharge gas through decompression again, thus generate the uniform bubble of combining closely with internal layer, form the polyethylene foam gasket for packing body buried layer that 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 is coated, forms the polyethylene foam gasket for packing that buried layer and coating layer are combined closely.Due to the utilization of technique scheme, the present invention compared with prior art has following advantages:
1. the present invention is applied to the foaming packing gasket of optical cable, hardness is moderate, rope body is softer, can large angle torsion and indeformable, but rope body has again certain hardness, own form, the coefficient of expansion can be kept to a certain extent little when being subject to External Force Acting, other deformed element around not easily making in cabling process, ensure cable core roundness, and owing to containing multiple fine and closely woven uniform bubble in inside, himself hardness ratio entity rope is reduced greatly, be that other element is stranding into the extruding force be 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, the cost of transportation of optical cable can be reduced; Again, foaming packing gasket material consumption is few, manufacturing cost can be reduced, calcium carbonate unit price is relatively low, significantly reduce cost (although the use of calcium carbonate is in the weight that adds somewhat to gasket for packing self, but because gasket for packing in this patent is foaming packing gasket, therefore compare entity rope still have greater advantage in weight); Constituent species is relatively less, and its unit price is on the low side compared to each analog assistant, and thus overall manufacturing cost has greater advantage; Each proportion of composing difference is less, is convenient to take, and saves artificial.
2. the present invention is applied to the foaming packing gasket of optical cable, and component ratio proportion difference is less, is convenient to take, and manual operation error is less, is beneficial to the stability ensureing product quality during 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 leave Small molecular residue in goods, affect Mechanical Properties of Products.
Embodiment
Below in conjunction with embodiment, the invention will be further described:
Embodiment 1: a kind of foaming packing gasket being applied to optical cable, described foaming packing gasket granule material is obtained through physical blowing by the component of following weight portion:
Foamed material semi-finished product 50 parts,
High density polyethylene (HDPE) (first) 50 parts,
Nucleation masterbatch 1 part;
Described foamed material semi-finished product are made up of the component of following weight portion:
Melt flow rate (MFR) is the low density polyethylene (LDPE) 30 parts of 0.03 ~ 0.09 g/10min,
Melt flow rate (MFR) is the high density polyethylene (HDPE) (first) 40 parts of 1.8 ~ 3.2 g/10min,
Melt flow rate (MFR) is the high density polyethylene (HDPE) (second) 30 parts 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 preparation technology of above-mentioned foaming packing gasket, comprises the following steps:
Step one, be the low density polyethylene (LDPE) 30 parts of 0.03 ~ 0.09 g/10min by melt index, the melt index high density polyethylene (HDPE) (first) 40 parts that is 1.8 ~ 3.2 g/10min, the melt index high density polyethylene (HDPE) (second) 30 parts that is 5 ~ 9 g/10min, calcium carbonate superfine powder 15 parts be positioned over high-speed mixer and mixing and evenly form mixture;
Step 2, the described mixture of step one is sent in double screw extruder, multistagely from low to high to heat extruder barrel temperature 180 ~ 230 DEG C, to be extruded into Ф 2.5mm under head temperature 230 DEG C of conditions rectangular;
Step 3, by step 2 described rectangular through water cooling tank cooling after again through blower fan dry, then, be cut into long 3mm, Ф 2.5mm small column grain as foamed material semi-finished product;
Step 4, by foamed material semi-finished product described in step 3 50 parts, high density polyethylene (HDPE) (first) 50 parts and nucleation masterbatch 1 part, by high mixer three mixed and obtain described foaming packing gasket granule material.
Step 5, described packing gasket granule material are in an extruder through heating and melting, nitrogen is injected wherein under a certain pressure simultaneously, discharge gas through decompression again, thus generate the uniform bubble of combining closely with internal layer, form the polyethylene foam gasket for packing body buried layer that 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 is coated, forms the polyethylene foam gasket for packing that buried layer and coating layer are combined closely.
Embodiment 2: a kind of foaming packing gasket being applied to optical cable, described foaming packing gasket granule material is obtained through physical blowing by the component of following weight portion:
Foamed material semi-finished product 40 parts,
High density polyethylene (HDPE) (first) 60 parts,
Nucleation masterbatch 1 part;
Described foamed material semi-finished product are made up of the component of following weight portion:
Melt index is the low density polyethylene (LDPE) 40 parts of 0.03 ~ 0.09,
Melt index is the high density polyethylene (HDPE) (first) 30 parts of 1.8 ~ 3.2,
Melt index is the high density polyethylene (HDPE) (second) 30 parts of 5 ~ 9,
20 parts, micron-class superfine calcium carbonate;
Above-mentioned foamed material semi-finished product melt flow rate (MFR) is 0.65 ± 0.20g/10min.
The preparation technology of above-mentioned foaming packing gasket, comprises the following steps:
Step one, be the low density polyethylene (LDPE) 40 parts of 0.03 ~ 0.09 g/10min by melt index, the melt index high density polyethylene (HDPE) (first) 30 parts that is 1.8 ~ 3.2 g/10min, the melt index high density polyethylene (HDPE) (second) 30 parts that is 5 ~ 9 g/10min, calcium carbonate superfine powder 20 parts be positioned over high-speed mixer and mixing and evenly form mixture;
Step 2, the described mixture of step one is sent in double screw extruder, multistagely from low to high to heat extruder barrel temperature 180 ~ 230 DEG C, to be extruded into Ф 2.5mm under head temperature 230 DEG C of conditions rectangular;
Step 3, by step 2 described rectangular through water cooling tank cooling after again through blower fan dry, then, be cut into long 3mm, Ф 2.5mm small column grain as foamed material semi-finished product;
Step 4, by foamed material semi-finished product described in step 3 40 parts, high density polyethylene (HDPE) (first) 60 parts and nucleation masterbatch 1 part, by high mixer three mixed and obtain described foaming packing gasket granule material.
Step 5, described packing gasket granule material are in an extruder through heating and melting, nitrogen is injected wherein under a certain pressure simultaneously, discharge gas through decompression again, thus generate the uniform bubble of combining closely with internal layer, form the polyethylene foam gasket for packing body buried layer that 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 is coated, forms the polyethylene foam gasket for packing that buried layer and coating layer are combined closely.
Embodiment 3: a kind of foaming packing gasket being applied to optical cable, described foaming packing gasket granule material is obtained through physical blowing by the component of following weight portion:
Foamed material semi-finished product 60 parts,
High density polyethylene (HDPE) (first) 40 parts,
Nucleation masterbatch 1 part;
Described foamed material semi-finished product are made up of the component of following weight portion:
Melt index is the low density polyethylene (LDPE) 30 parts of 0.03 ~ 0.09,
Melt index is the high density polyethylene (HDPE) (first) 30 parts of 1.8 ~ 3.2,
Melt index is the high density polyethylene (HDPE) (second) 40 parts of 5 ~ 9,
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 preparation technology of above-mentioned foaming packing gasket, comprises the following steps:
Step one, be the low density polyethylene (LDPE) 30 parts of 0.03 ~ 0.09 g/10min by melt index, the melt index high density polyethylene (HDPE) (first) 30 parts that is 1.8 ~ 3.2 g/10min, the melt index high density polyethylene (HDPE) (second) 40 parts that is 5 ~ 9 g/10min, calcium carbonate superfine powder 15 parts be positioned over high-speed mixer and mixing and evenly form mixture;
Step 2, the described mixture of step one is sent in double screw extruder, multistagely from low to high to heat extruder barrel temperature 180 ~ 230 DEG C, to be extruded into Ф 2.5mm under head temperature 230 DEG C of conditions rectangular;
Step 3, by step 2 described rectangular through water cooling tank cooling after again through blower fan dry, then, be cut into long 3mm, Ф 2.5mm small column grain as foamed material semi-finished product;
Step 4, by foamed material semi-finished product described in step 3 60 parts, high density polyethylene (HDPE) (first) 40 parts and nucleation masterbatch 1 part, by high mixer three mixed and obtain described foaming packing gasket granule material;
Step 5, described packing gasket granule material are in an extruder through heating and melting, nitrogen is injected wherein under a certain pressure simultaneously, discharge gas through decompression again, thus generate the uniform bubble of combining closely with internal layer, form the polyethylene foam gasket for packing body buried layer that 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 is coated, forms the polyethylene foam gasket for packing that buried layer and coating layer are combined closely.
Above-described embodiment, only for technical conceive of the present invention and feature are described, its object is to person skilled in the art can be understood content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences done according to Spirit Essence of the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (3)
1. be applied to a foaming packing gasket for optical cable, it is characterized in that: described foaming packing gasket is obtained through physical blowing by the component of following weight portion:
Foamed material semi-finished product 40 ~ 60 parts,
High density polyethylene (HDPE) (first) 40 ~ 60 parts,
Nucleation masterbatch 1 part;
Described foamed material semi-finished product are made up of the component of following weight portion:
Melt flow rate (MFR) is the low density polyethylene (LDPE) 30 ~ 40 parts of 0.03 ~ 0.09 g/10min,
Melt flow rate (MFR) is the high density polyethylene (HDPE) (first) 30 ~ 40 parts of 1.8 ~ 3.2 g/10min,
Melt flow rate (MFR) is the high density polyethylene (HDPE) (second) 30 ~ 40 parts of 5 ~ 9 g/10min,
15 ~ 20 parts, micron-class superfine calcium carbonate.
2. foaming packing gasket according to claim 1, is characterized in that: described foamed material semi-finished product melt flow rate (MFR) is 0.65 ± 0.20g/10min.
3. the preparation technology of foaming packing gasket as claimed in claim 1, is characterized in that: comprise the following steps:
Step one, be the low density polyethylene (LDPE) 30 ~ 40 parts of 0.03 ~ 0.09 g/10min by melt flow rate (MFR), the melt flow rate (MFR) high density polyethylene (HDPE) (first) 30 ~ 40 parts that is 1.8 ~ 3.2 g/10min, the melt flow rate (MFR) high density polyethylene (HDPE) (second) 30 ~ 40 parts that is 5 ~ 9 g/10min, calcium carbonate superfine powder 15 ~ 20 parts be positioned over high-speed mixer and mixing and evenly form mixture;
Step 2, the described mixture of step one is sent in double screw extruder, multistagely from low to high to heat extruder barrel temperature 180 ~ 230 DEG C, to be extruded into Ф 2.5mm under head temperature 230 DEG C of conditions rectangular;
Step 3, by step 2 described rectangular through water cooling tank cooling after again through blower fan dry, then, be cut into long 3mm, Ф 2.5mm small column grain as foamed material semi-finished product;
Step 4, by foamed material semi-finished product 40 ~ 60 parts, high density polyethylene (HDPE) (first) 40 ~ 60 parts and nucleation masterbatch 1 part, by high mixer three mixed and obtain described foaming packing gasket granule material;
Step 5, described packing gasket granule material are in an extruder through heating and melting, nitrogen is injected wherein under a certain pressure simultaneously, discharge gas through decompression again, thus generate the uniform bubble of combining closely with internal layer, form the polyethylene foam gasket for packing body buried layer that 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 is coated, forms the polyethylene foam gasket for packing that buried layer and coating layer are combined closely.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210536006.1A CN103035330B (en) | 2012-12-13 | 2012-12-13 | Be applied to foaming packing gasket and the preparation technology thereof of optical cable |
| CN201510553956.9A CN105367865B (en) | 2012-12-13 | 2012-12-13 | The preparation process of low-expansion coefficient polyethylene foam gasket for packing |
| CN201510553843.9A CN105131391A (en) | 2012-12-13 | 2012-12-13 | Polyethylene material for optical cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210536006.1A CN103035330B (en) | 2012-12-13 | 2012-12-13 | Be applied to foaming packing gasket and the preparation technology thereof of optical cable |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510553843.9A Division CN105131391A (en) | 2012-12-13 | 2012-12-13 | Polyethylene material for optical cable |
| CN201510553956.9A Division CN105367865B (en) | 2012-12-13 | 2012-12-13 | The preparation process of low-expansion coefficient polyethylene foam gasket for packing |
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| Publication Number | Publication Date |
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| CN103035330A CN103035330A (en) | 2013-04-10 |
| CN103035330B true CN103035330B (en) | 2015-08-26 |
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| CN201510553843.9A Pending CN105131391A (en) | 2012-12-13 | 2012-12-13 | Polyethylene material for optical cable |
| CN201510553956.9A Active CN105367865B (en) | 2012-12-13 | 2012-12-13 | The preparation process of low-expansion coefficient polyethylene foam gasket for packing |
| CN201210536006.1A Active CN103035330B (en) | 2012-12-13 | 2012-12-13 | Be applied to foaming packing gasket and the preparation technology thereof of optical cable |
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| CN201510553843.9A Pending CN105131391A (en) | 2012-12-13 | 2012-12-13 | Polyethylene material for optical cable |
| CN201510553956.9A Active CN105367865B (en) | 2012-12-13 | 2012-12-13 | The preparation process of low-expansion coefficient polyethylene foam gasket for packing |
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| CN105957636A (en) * | 2015-03-10 | 2016-09-21 | 蒋菊生 | Manufacture method of optical and electric composite cable with special-shaped filling ropes |
| CN108008507A (en) * | 2017-11-24 | 2018-05-08 | 中广核拓普（四川）新材料有限公司 | Optical cable high-foaming gasket for packing and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1098761C (en) * | 1998-03-31 | 2003-01-15 | 四川联合大学 | Preparation of foamed insulating polyethylene material for coaxial cable |
| JP4003116B2 (en) * | 2001-11-28 | 2007-11-07 | 株式会社フジミインコーポレーテッド | Polishing composition for magnetic disk substrate and polishing method using the same |
| JP4175247B2 (en) * | 2003-11-25 | 2008-11-05 | 日立電線株式会社 | Resin composition and high-frequency coaxial cable using the same |
| CN1741199A (en) * | 2004-08-26 | 2006-03-01 | 深圳市联嘉祥电线电缆实业有限公司 | Method for producing physical foamed insulation material of coaxle cable |
| CN101012323A (en) * | 2007-02-01 | 2007-08-08 | 徐晓冰 | Polythene physics foaming material and preparing method thereof |
| CN201117366Y (en) * | 2007-11-16 | 2008-09-17 | 成都亨通光通信有限公司 | Optical cable possessing foaming filling element |
| CN101701093B (en) * | 2009-11-30 | 2011-09-07 | 苏州亨利通信材料有限公司 | Special color identification material for color polyolefin special optical cable |
-
2012
- 2012-12-13 CN CN201510553843.9A patent/CN105131391A/en active Pending
- 2012-12-13 CN CN201510553956.9A patent/CN105367865B/en active Active
- 2012-12-13 CN CN201210536006.1A patent/CN103035330B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105131391A (en) | 2015-12-09 |
| CN103035330A (en) | 2013-04-10 |
| CN105367865A (en) | 2016-03-02 |
| CN105367865B (en) | 2018-10-30 |
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