CN101786365A - Production method of single-side copper-plastic compound belt - Google Patents
Production method of single-side copper-plastic compound belt Download PDFInfo
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- CN101786365A CN101786365A CN200910222575A CN200910222575A CN101786365A CN 101786365 A CN101786365 A CN 101786365A CN 200910222575 A CN200910222575 A CN 200910222575A CN 200910222575 A CN200910222575 A CN 200910222575A CN 101786365 A CN101786365 A CN 101786365A
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Abstract
The invention relates to a production method of a single-side copper-plastic compound belt, belonging to the field of hot processing manufacturing technology. The production method mainly adopts a copper belt and a polyethylene (PE) plastic film as raw materials and comprises the working procedures of unwinding, preheating, compounding, cooling, winding, cutting, checking of finished products and the like, and finally the single-side copper-plastic compound belt can be produced. The single-side copper-plastic compound belt has better shielding performance, strong anti-interference capability, lower initial bonding temperature, higher heat-seal adhesive property and good electrical conductivity. The tensile strength is more than or equal to 54MPa, the elongation at break is more than o r equal to 15%, and the peel strength between the copper belt and the PE plastic film is more than or equal to 6.13N/cm.
Description
Technical field
The present invention relates to a kind of production method of single-side copper-plastic compound belt, saying so particularly is used for a kind of material that cable, optical cable are made, and belongs to hot-working manufacturing technology field.
Background technology
In prior art; the composite band screen that is used for cable, optical cable is at present kept away poor-performing; noise appears through regular meeting; phenomenons such as cross-talk, antijamming capability is relatively poor, and has higher requirement for environment for use; under general environment; moisture-sensitive is corroded easily, has significantly reduced service life, is increasing production cost virtually.Simultaneously, general composite band is relatively stricter to heating-up temperature in cable, the optical cable production process, and the whole production process is complexity but also loaded down with trivial details not only, and product quality does not often reach requirement yet.
Summary of the invention
The objective of the invention is to overcome above-mentioned weak point, thereby provide a kind of production method of single-side copper-plastic compound belt, its compound copper-plastics band shielding properties is better, antijamming capability is strong, satisfactory electrical conductivity is arranged, has lower initial sticking temperature, higher heat-seal bond performance, and can reduce communication cable and optical cable composite belt longitudinal bag greatly and form operating temperature and throughput in the operation.
According to technical scheme provided by the invention, a kind of production method of single-side copper-plastic compound belt, adopt following processing step:
1, the single-side copper-plastic compound belt material is selected:
(1) copper strips: select the T2 copper strips for use, copper strips thickness is that 0.15-0.2mm, width are 400-1000mm, main standard: tensile strength 〉=16Mpa, extension at break 〉=15%, thickness deviation ± 8%.
(2), film: selecting thickness for use is that 0.04-0.05mm, width are the PE sealed polyethylene plastic of 400-1000mm, main standard: tensile strength 〉=16MPa, extension at break degree (vertically) 〉=250%, extension at break degree (laterally) 〉=400%, heat sealing strength 〉=18.5N/cm, peel strength 〉=6.3N/cm.
2, unreel operation
Copper strips volume and PE sealed polyethylene plastic frame are to let off roll, and let off roll links to each other with magnetic powder brake, and magnetic powder brake utilizes magnetic to pass on torque, magnetic powder brake: change apart from 400NM.
3, preheat operation
Copper strips is preheated: copper strips preheats through last baking oven and four groups of preheat rolls with the speed of 15m/min-25m/min, last oven temperature is: 80～200 ℃, four groups of preheat roll temperature are respectively: (1), first group of preheat roll temperature are: 80 ℃-90 ℃; (2), second group of preheat roll temperature is: 80 ℃-90 ℃; (3), the 3rd group of preheat roll temperature is: 80 ℃-90 ℃; (4), the 4th group of preheat roll temperature is: 80 ℃-90 ℃, make copper strips reach combined temp.
4, compound working procedure
The PE sealed polyethylene plastic is compounded on the copper strips, compound rubber rollers and the composite roll by the heat posted compounding machine of PE sealed polyethylene plastic and copper strips fits tightly, reach the 5-10 kgf between rubber rollers and the composite roll, being sent to 3 meters long following baking oven with the speed of 15m/min-25m/min, to heat compound be single-side copper-plastic compound belt; The laminator important technological parameters: Breadth Maximum is 600～1000mm, and following baking oven heating binding temperature is 320～400 ℃, and linear velocity is 15～28 meters/minute.
5, refrigerating work procedure
Single-side copper-plastic compound belt mainly is tentatively temperature to be lowered by the common operation of 12 fans after baking oven comes out down, and single-side copper-plastic compound belt drops to temperature below 40 ℃ by 3 water chill rolls more then.
6, winding process
Single-side copper-plastic compound belt carries out rolling after cooling, will test during rolling, watches whether tiny bubble etc. is arranged, as finds should write down rolling rice number when defective, carries out mark.
Technical parameter: torque motor, power: 80N/min.
7, divide cutting process
According to customer requirements specification row cutter, row's cutter spacing tested confirm that the back cuts by cutting machine, the size when just beginning to cut test; cut after the assay was approved; inspect by random samples in cutting process, find that error is too big, shutdown is cut after adjusting again.
The cutting machine major parameter: switch to 15mm the narrowest can the branch, and switch to 1000mm the wideest can the branch.Cut the longest 4500m of being of length.
8, verify as finished product.
1, the single-side copper-plastic compound belt surface should be smooth, smooth, even, free from admixture, no piebald, bubble etc., and do not have other machineries and hinder defective.
The side of the single-side copper-plastic compound belt of 2, cutting should be smooth, and the side unevenness is not more than 2mm, and end face should not have crimping, breach, burr and other mechanical damages, and when pulling out, the edge should not have tangible waveform.
3, tensile strength 〉=54Mpa; Elongation at break 〉=15%; Peel strength 〉=6.13N/cm between copper strips and plastic sheeting; Composite band heat seal district shear strength: composite band break or plastic layer and copper strips between bonding close to produce earlier and destroy, and the heat seal district between the plastic layer should not produce failure by shear.
Compared with the prior art the present invention has the following advantages:
Single-side copper-plastic compound belt shielding properties of the present invention is better, antijamming capability is strong, also reduced simultaneously requirement to environment for use, has lower initial sticking temperature, higher heat-seal bond performance, reduce operating temperature and throughput in communication cable and the optical cable composite belt longitudinal bag formation operation greatly, only need extruder head self temperature, just can realize that composite belt longitudinal bag overlapping well bonds, thereby simplified the machining process of cable, optical cable more, also improved product quality simultaneously greatly.
The specific embodiment
Following the present invention will be further described in conjunction with the embodiments:
Embodiment one: the production method of a kind of single-side copper-plastic compound belt of the present invention, adopt following processing step:
1, the single-side copper-plastic compound belt material is selected:
Raw material copper strips: select the T2 copper strips for use, thickness 0.15mm, width 500mm.Main standard: tensile strength 〉=16Mpa, extension at break 〉=15%, thickness deviation ± 8%.The PE sealed polyethylene plastic of selecting for use EAA E.I.Du Pont Company to produce, PE sealed polyethylene plastic thickness 0.05mm, width 500mm main standard: tensile strength 〉=16MPa, extension at break degree (vertically) 〉=250%, extension at break degree (laterally) 〉=400%, heat sealing strength 〉=18.5N/cm, peel strength 〉=6.3N/cm, layering: not stratified.
2, unreel operation
Copper strips volume frame is to let off roll, and let off roll links to each other with magnetic powder brake, and magnetic powder brake utilizes magnetic to pass on torque.Equipment magnetic powder brake: model C Z40 has space flight dynamo-electric Manufacturing Co., Ltd in Jiangsu to make.
PE sealed polyethylene plastic frame is to let off roll, and let off roll links to each other with magnetic powder brake.Equipment magnetic powder brake: model FZ-B-2 has the east of a river, Ningbo Kodak magnetic powder cluth factory to make.Magnetic powder brake: change apart from 400NM.
3, preheat operation
Copper strips is preheated: copper strips with the speed of 20m/min through last baking oven (going up baking oven is made up of the stainless steel electrothermal tube of 14 800W) temperature is: 140 ℃ and four groups of preheat roll temperature are respectively: (1), first group of preheat roll temperature are: 90 ℃; (2), second group of preheat roll temperature is: 90 ℃; (3), the 3rd group of preheat roll temperature is: 85 ℃; (4), the 4th group of preheat roll temperature is: 85 ℃.Make copper strips reach combined temp.
4, compound working procedure
(1), undertaken compound by RTJ-600 type heat posted compounding machine (Haining people machinery Co., Ltd produces) copper strips and PE sealed polyethylene plastic, compound tense PE sealed polyethylene plastic and copper strips fit tightly by rubber rollers and composite roll (the YCT132-4B type variable-speed motor that composite roll has south, Anhui electrical machinery plant to produce drives the JZQ250 decelerator transmission that Shanghai Pu Nan decelerator factory produces), reach 6 kgfs between rubber rollers and the composite roll, being sent to 3 meters following baking oven (following baking oven is made up of the stainless steel electrothermal tube of 36 1000W) with the speed of 20m/min heats and fits into single-side copper-plastic compound belt, following baking oven heating binding temperature is 400 ℃, and linear velocity is 30 meters/minute.
5, refrigerating work procedure
Mainly be tentatively temperature to be lowered by the common operation of 12 ventilating fans by the model FA-40 of platform continent boat peak production after single-side copper-plastic compound belt comes out from baking oven, single-side copper-plastic compound belt drops to temperature below 40 ℃ by 3 water chill rolls more then.
6, winding process
Single-side copper-plastic compound belt carries out rolling with rolling rod (the moment threephase asynchronous of the YLJ160-100-4 that is produced by Jiaxing City Hua Ge Electric Machine Co., Ltd drives the transmission of JZQ350 decelerator) after cooling off, to test during rolling, watch whether tiny particle etc. is arranged, as find should write down rolling rice number when defective, carry out mark.
7, divide cutting process
According to customer requirements specification row cutter; row's cutter spacing tested confirm that the back cuts by cutting machine (magnetic powder brake of the model C Z50 that is made by the dynamo-electric Manufacturing Co., Ltd of Jiangsu space flight is that the rolling rod that the CZ50 type magnetic powder brake of composite band let off roll and YC50-4B type electromagnetic deceleration motor of being produced by the automatically controlled governor in Wuxi clear a factory and the production of Taide decelerator Co., Ltd is formed is formed); to the size when just beginning to cut test; cut after the assay was approved; in cutting process, inspect by random samples; find that error is too big, shutdown is cut after adjusting again.
The cutting machine major parameter: single-side copper-plastic compound belt switches to 15mm the narrowest can the branch, and switch to 600mm the wideest can the branch.Cut the longest 4500m of being of length.
8, verify as finished product.
1, the composite band surface should be smooth, smooth, even, free from admixture, no piebald, and do not have other machineries and hinder defective.
The side of the composite band of 2, cutting should be smooth, and the side unevenness is not more than 2mm, and end face should not have crimping, breach, burr and other mechanical damages, and when pulling out, the edge should not have tangible waveform.
3, tensile strength 〉=54Mpa; Elongation at break 〉=15%; Peel strength 〉=6.13N/cm between copper strips and plastic sheeting; Composite band heat seal district shear strength: composite band break or plastic layer and copper strips between bonding close to produce earlier and destroy, and the heat seal district between the plastic layer should not produce failure by shear.
Embodiment two: the production method of a kind of single-side copper-plastic compound belt of the present invention, adopt following processing step:
1, the single-side copper-plastic compound belt material is selected:
Raw material copper strips: select the T2 copper strips for use, thickness 0.20mm, width 500mm.Main standard: tensile strength 〉=16Mpa, extension at break 〉=15%, thickness deviation ± 8%.The PE sealed polyethylene plastic that film selects for use EAA E.I.Du Pont Company to produce, PE sealed polyethylene plastic thickness 0.05mm, width 500mm main standard: tensile strength 〉=16MPa, extension at break degree (vertically) 〉=250%, extension at break degree (laterally) 〉=400%, heat sealing strength 〉=18.5N/cm, peel strength 〉=6.3N/cm, layering: not stratified.
2, unreel operation
Copper strips volume frame is to let off roll, and let off roll links to each other with magnetic powder brake, and magnetic powder brake utilizes magnetic to pass on torque.Equipment magnetic powder brake: model C Z40 has space flight dynamo-electric Manufacturing Co., Ltd in Jiangsu to make.
PE sealed polyethylene plastic frame is to let off roll, and let off roll links to each other with magnetic powder brake.Equipment magnetic powder brake: model FZ-B-2 has the east of a river, Ningbo Kodak magnetic powder cluth factory to make.Magnetic powder brake: change apart from 400NM.
3, preheat operation
Copper strips is preheated: copper strips with the speed of 16m/min through last baking oven (going up baking oven is made up of the stainless steel electrothermal tube of 14 800W) temperature is: 140 ℃ and four groups of preheat roll temperature are respectively: (1), first group of preheat roll temperature are: 85 ℃; (2), second group of preheat roll temperature is: 85 ℃; (3), the 3rd group of preheat roll temperature is: 90 ℃; (4), the 4th group of preheat roll temperature is: 85 ℃.Make copper strips reach combined temp.
4, compound working procedure
(1), undertaken compound by RTJ-600 type heat posted compounding machine (Haining people machinery Co., Ltd produces) copper strips and PE sealed polyethylene plastic, compound tense PE sealed polyethylene plastic and copper strips fit tightly by rubber rollers and composite roll (the YCT132-4B type variable-speed motor that composite roll has south, Anhui electrical machinery plant to produce drives the JZQ250 decelerator transmission that Shanghai Pu Nan decelerator factory produces), reach 6 kgfs between rubber rollers and the composite roll, be sent to 3 meters following baking oven (following baking oven is made up of the stainless steel electrothermal tube of 36 1000W) with the speed of 18m/min and heat and fit into single-side copper-plastic compound belt.Following baking oven heating binding temperature is 420 ℃, and linear velocity is 32 meters/minute.
5, refrigerating work procedure
Mainly be tentatively temperature to be lowered by the common operation of 12 ventilating fans by the model FA-40 of platform continent boat peak production after single-side copper-plastic compound belt comes out from baking oven, single-side copper-plastic compound belt drops to temperature below 40 ℃ by 3 water chill rolls more then.
6, winding process
Single-side copper-plastic compound belt carries out rolling with rolling rod (the moment threephase asynchronous of the YLJ160-100-4 that is produced by Jiaxing City Hua Ge Electric Machine Co., Ltd drives the transmission of JZQ350 decelerator) after cooling off, to test during rolling, watch whether tiny particle etc. is arranged, as find should write down rolling rice number when defective, carry out mark.
7, divide cutting process
According to customer requirements specification row cutter; row's cutter spacing tested confirm that the back cuts by cutting machine (magnetic powder brake of the model C Z50 that is made by the dynamo-electric Manufacturing Co., Ltd of Jiangsu space flight is that the rolling rod that the CZ50 type magnetic powder brake of composite band let off roll and YC50-4B type electromagnetic deceleration motor of being produced by the automatically controlled governor in Wuxi clear a factory and the production of Taide decelerator Co., Ltd is formed is formed); to the size when just beginning to cut test; cut after the assay was approved; in cutting process, inspect by random samples; find that error is too big, shutdown is cut after adjusting again.
The cutting machine major parameter: single-side copper-plastic compound belt switches to 15mm the narrowest can the branch, and switch to 600mm the wideest can the branch.Cut the longest 4500m of being of length.
8, verify as finished product.
1, the composite band surface should be smooth, smooth, even, free from admixture, no piebald, and do not have other machineries and hinder defective.
The side of the composite band of 2, cutting should be smooth, and the side unevenness is not more than 2mm, and end face should not have crimping, breach, burr and other mechanical damages, and when pulling out, the edge should not have tangible waveform.
3, tensile strength 〉=54Mpa; Elongation at break 〉=15%; Peel strength 〉=6.13N/cm between copper strips and plastic foil; Composite band heat seal district shear strength: composite band break or plastic layer and copper strips between bonding close to produce earlier and destroy, and the heat seal district between the plastic layer should not produce failure by shear.
Embodiment three: the production method of a kind of single-side copper-plastic compound belt of the present invention, adopt following processing step:
1, the single-side copper-plastic compound belt material is selected:
Raw material copper strips: select the T2 copper strips for use, thickness 0.185mm, width 500mm.Main standard: tensile strength 〉=16Mpa, extension at break 〉=15%, thickness deviation ± 8%.PE sealed polyethylene plastic thickness 0.05mm, width 500mm main standard: tensile strength 〉=16MPa that film selects for use EAA E.I.Du Pont Company to produce, extension at break degree (vertically) 〉=250%, extension at break degree (laterally) 〉=400%, heat sealing strength 〉=18.5N/cm, peel strength 〉=6.3N/cm, layering: not stratified.
2, unreel operation
Copper strips volume frame is to let off roll, and let off roll links to each other with magnetic powder brake, and magnetic powder brake utilizes magnetic to pass on torque.Equipment magnetic powder brake: model C Z40 has space flight dynamo-electric Manufacturing Co., Ltd in Jiangsu to make.
PE sealed polyethylene plastic frame is to let off roll, and let off roll links to each other with magnetic powder brake.Equipment magnetic powder brake: model FZ-B-2 has the east of a river, Ningbo Kodak magnetic powder cluth factory to make.Magnetic powder brake: change apart from 400NM.
3, preheat operation
Copper strips is preheated: copper strips with the speed of 18m/min through last baking oven (going up baking oven is made up of the stainless steel electrothermal tube of 14 800W) temperature is: 140 ℃ and four groups of preheat roll temperature are respectively: (1), first group of preheat roll temperature are: 80 ℃; (2), second group of preheat roll temperature is: 85 ℃; (3), the 3rd group of preheat roll temperature is 90 ℃; (4), the 4th group of preheat roll temperature is: 85 ℃.Make copper strips reach combined temp.
4, compound working procedure
(1), undertaken compound by RTJ-600 type heat posted compounding machine (Haining people machinery Co., Ltd produces) copper strips and PE sealed polyethylene plastic, compound tense PE sealed polyethylene plastic and copper strips fit tightly by rubber rollers and composite roll (the YCT132-4B type variable-speed motor that composite roll has south, Anhui electrical machinery plant to produce drives the JZQ250 decelerator transmission that Shanghai Pu Nan decelerator factory produces), reach 6 kgfs between rubber rollers and the composite roll, be sent to 3 meters following baking oven (following baking oven is made up of the stainless steel electrothermal tube of 36 1000W) with the speed of 18m/min and heat and fit into single-side copper-plastic compound belt.Following baking oven heating binding temperature is 460 ℃, and linear velocity is 28 meters/minute.
5, refrigerating work procedure
Mainly be tentatively temperature to be lowered by the common operation of 12 ventilating fans by the model FA-40 of platform continent boat peak production after single-side copper-plastic compound belt comes out from baking oven, single-side copper-plastic compound belt drops to temperature below 40 ℃ by 3 water chill rolls more then.
6, winding process
Single-side copper-plastic compound belt carries out rolling with rolling rod (the moment threephase asynchronous of the YLJ160-100-4 that is produced by Jiaxing City Hua Ge Electric Machine Co., Ltd drives the transmission of JZQ350 decelerator) after cooling off, to test during rolling, watch whether tiny particle etc. is arranged, as find should write down rolling rice number when defective, carry out mark.
7, divide cutting process
According to customer requirements specification row cutter; row's cutter spacing tested confirm that the back cuts by cutting machine (magnetic powder brake of the model C Z50 that is made by the dynamo-electric Manufacturing Co., Ltd of Jiangsu space flight is that the rolling rod that the CZ50 type magnetic powder brake of composite band let off roll and YC50-4B type electromagnetic deceleration motor of being produced by the automatically controlled governor in Wuxi clear a factory and the production of Taide decelerator Co., Ltd is formed is formed); to the size when just beginning to cut test; cut after the assay was approved; in cutting process, inspect by random samples; find that error is too big, shutdown is cut after adjusting again.
The cutting machine major parameter: single-side copper-plastic compound belt switches to 15mm the narrowest can the branch, and switch to 600mm the wideest can the branch.Cut the longest 4500m of being of length.
8, verify as finished product.
1, the composite band surface should be smooth, smooth, even, free from admixture, no piebald, and do not have other machineries and hinder defective.
The side of the composite band of 2, cutting should be smooth, and the side unevenness is not more than 2mm, and end face should not have crimping, breach, burr and other mechanical damages, and when pulling out, the edge should not have tangible waveform.
3, tensile strength 〉=54Mpa; Elongation at break 〉=15%; Peel strength 〉=6.13N/cm between copper strips and film; Composite band heat seal district shear strength: composite band break or plastic layer and copper strips between bonding close to produce earlier and destroy, and the heat seal district between the plastic layer should not produce failure by shear.
Claims (2)
1. the production method of a single-side copper-plastic compound belt is characterized in that: adopt following processing step:
(1), material is selected:
(a) copper strips: selecting thickness for use is that 0.15-0.2mm, width are the copper strips of 400-1000mm;
(b), film: select for use thickness to be: 0.04-0.05mm, width are: the PE sealed polyethylene plastic of 400-1000mm;
(2), unreel operation
Copper strips volume and PE sealed polyethylene plastic frame are to let off roll, and let off roll links to each other with magnetic powder brake, magnetic powder brake: change apart from 400NM;
(3), preheat operation
Copper strips is preheated: copper strips preheats through last baking oven and four groups of preheat rolls with the speed of 15m/min-25m/min, last oven temperature is: 140～240 ℃, four groups of preheat roll temperature are respectively: (1), first group of preheat roll temperature are: 80 ℃-90 ℃; (2), second group of preheat roll temperature is: 80 ℃-90 ℃; (3), the 3rd group of preheat roll temperature is: 80 ℃-90 ℃; (4), the 4th group of preheat roll temperature is: 80 ℃-90 ℃, make copper strips reach combined temp;
(4), compound working procedure
The PE sealed polyethylene plastic is compounded on the copper strips, compound rubber rollers and the composite roll by the heat posted compounding machine of PE sealed polyethylene plastic and copper strips fits tightly, reach the 5-10 kgf between rubber rollers and the composite roll, being sent to down baking oven with the speed of 15m/min-25m/min, to heat compound be single-side copper-plastic compound belt; Following baking oven heating binding temperature is 400～460 ℃, and linear velocity is 28～32 meters/minute;
(5), refrigerating work procedure
Single-side copper-plastic compound belt comes out from following baking oven temperature to be dropped to below 40 ℃ after cool off; Carry out rolling after the cooling;
(6), divide cutting process
Arrange cutter according to the customer requirements specification, row's cutter spacing is tested confirm then to cut, verify as finished product by cutting machine.
2. the production method of a kind of single-side copper-plastic compound belt as claimed in claim 1 is characterized in that described single-side copper-plastic compound belt tensile strength 〉=54Mpa; Elongation at break 〉=15%; Peel strength 〉=6.13N/cm between copper strips and plastic sheeting.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910222575A CN101786365A (en) | 2009-11-20 | 2009-11-20 | Production method of single-side copper-plastic compound belt |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910222575A CN101786365A (en) | 2009-11-20 | 2009-11-20 | Production method of single-side copper-plastic compound belt |
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| CN101786365A true CN101786365A (en) | 2010-07-28 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103165237A (en) * | 2011-12-09 | 2013-06-19 | 九星控股集团有限公司 | Halogen-free flame-retardant copper-plastic composite belt and preparation thereof |
| CN103165224A (en) * | 2011-12-09 | 2013-06-19 | 九星控股集团有限公司 | Copper plastic composite strap suitable for telecommunication cable and optical cable and preparation method of copper plastic composite strap |
| CN103921525A (en) * | 2014-04-16 | 2014-07-16 | 曾芳勤 | Continuous moulding method of insulating film covering interior of shielding case |
| CN105312900A (en) * | 2014-05-30 | 2016-02-10 | 万向荣 | Assembly line for producing extension-type flat tubes |
| CN111993748A (en) * | 2020-08-26 | 2020-11-27 | 广东毅科新材料有限公司 | Processing method of metal composite film |
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2009
- 2009-11-20 CN CN200910222575A patent/CN101786365A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103165237A (en) * | 2011-12-09 | 2013-06-19 | 九星控股集团有限公司 | Halogen-free flame-retardant copper-plastic composite belt and preparation thereof |
| CN103165224A (en) * | 2011-12-09 | 2013-06-19 | 九星控股集团有限公司 | Copper plastic composite strap suitable for telecommunication cable and optical cable and preparation method of copper plastic composite strap |
| CN103165237B (en) * | 2011-12-09 | 2015-10-21 | 九星控股集团有限公司 | A kind of halogen-free flame retardant copper-plastic composite belt and preparation thereof |
| CN103921525A (en) * | 2014-04-16 | 2014-07-16 | 曾芳勤 | Continuous moulding method of insulating film covering interior of shielding case |
| CN105312900A (en) * | 2014-05-30 | 2016-02-10 | 万向荣 | Assembly line for producing extension-type flat tubes |
| CN105312900B (en) * | 2014-05-30 | 2019-04-23 | 万向荣 | A kind of assembly line producing the flat pipe of telescopic scrolling |
| CN111993748A (en) * | 2020-08-26 | 2020-11-27 | 广东毅科新材料有限公司 | Processing method of metal composite film |
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Application publication date: 20100728 |