CN105097075A - Ultra-fine cable applied shielding protection sheath film and production technology thereof - Google Patents
Ultra-fine cable applied shielding protection sheath film and production technology thereof Download PDFInfo
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- CN105097075A CN105097075A CN201510528735.6A CN201510528735A CN105097075A CN 105097075 A CN105097075 A CN 105097075A CN 201510528735 A CN201510528735 A CN 201510528735A CN 105097075 A CN105097075 A CN 105097075A
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Abstract
The invention provides an ultra-fine cable applied shielding protection sheath film and production technology thereof. The structure of the shielding protection sheath film comprises a copper foil layer, a PET layer and a binding layer between the copper foil layer and the PET layer. One face of the copper foil layer and one face of the PET layer that face the binding layer are provided with electronic corona uneven faces. The copper foil layer, the binding layer and the PET layer are bond together as an entire body. The production technology of the ultra-fine cable applied shielding protection sheath film comprises the following steps: preparing materials, preparing binding agent, composing, placing and solidifying, separating and winding to attain a finished product. According to the invention, the copper foil layer in the shielding protection sheath film enables the shielding protection sheath film to possess good shielding, insulating, anti-wearing and anti-corrosion functions so that the inner cores of a cable are better protected and the quality of an ultra-fine cable improves. The production technology ensures that a shielding protection sheath film becomes thinner and narrower. The shielding protection sheath film can be designed as thin as 13 mu and as narrow as 1.5 mm to the best, thereby making an already ultra-thin cable finer and thinner. Further, the production technology process is simple, cost-effective and high efficient.
Description
Technical field
The present invention relates to a kind of shield sheath film, particularly relate to a kind of the shield sheath film and the production technology thereof that are applied to superfine cable.
Background technology
In recent years, the consumer electronics product being representative with mobile phone, notebook computer with communicate, medical treatment, military electronic product miniaturization trend accelerate, performance requirement improves constantly, and the traditional wiring element such as flat cable, flexible PCB (FPC) of the various frequency signal of transmission is transmitted rapidly that speed is high in these products, bandwidth and the strong Ultrathin coaxial cable of electromagnetism interference replace.Particularly middle nineteen nineties in last century mobile communication universal, facilitate research and development and the large-scale production of Ultrathin coaxial cable especially.This kind of superfine cable has following feature: single core coaxial cable external diameter is minimum, has comparatively harsh requirement to the width of sheath and thickness; Cable possesses good mechanical and physical performance, has very strong counter-bending and torsion capacity in particular for the cable connecting active module; Cable operating voltage is usually lower, but due to its insulation very thin, therefore require that insulating barrier should be able to tolerate higher disruptive field intensity; In most cases, cable usage space is narrow, and radiating condition is poor, and cable should possess higher temperature resistant grade.
In prior art, plastics are extruded because restrictive coating is generally, conventional plastics are FEP, PFA, ETFE(ethylene-tetrafluoroethylene copolymer) and PVC(polyvinyl chloride), or wrapped one deck self-adhering-type polyester (PET) film, restrictive coating function singleness, and the film body of functional form is thicker, the demand of superfine cable can not be met.Therefore, be necessary to do further research and development to the shield sheath film being applied to superfine cable.
Summary of the invention
The object of the invention is to solve above-mentioned the deficiencies in the prior art, provide a kind of be applied to superfine cable there is the ultrathin shield sheath film being convenient to roll into dish.
Another object of the present invention is to provide a kind of production technology being applied to the shield sheath film of superfine cable.
In order to achieve the above object, the technical solution adopted in the present invention is:
Be applied to the shield sheath film of superfine cable, especially, comprise copper foil layer, pet layer and the adhesive layer between copper foil layer and pet layer, and copper foil layer, pet layer all have corona matsurface towards the one side of adhesive layer, described copper foil layer, adhesive layer and pet layer three bond one.
Preferably, the thickness of described copper foil layer is 6 μm ~ 10 μm, and the thickness of described pet layer is 4 μm ~ 12 μm, and the thickness of described adhesive layer is 2 μm ~ 3 μm.
Preferably, the thickness of described copper foil layer is 6 μm, and the thickness of described pet layer is 4 μm, and the thickness of described adhesive layer is 3 μm.
Preferably, the width of described shield sheath film is 1.5mm ~ 5mm.
Preferably, described shield sheath film is rolled as shield sheath membranous disc body by a storage reel.
Present invention further teaches the production technology of the shield sheath film being applied to superfine cable, comprise the following steps:
S1, material preparation process, select the copper foil layer of thickness 6 μm ~ 10 μm, width 500mm ~ 650mm, select pet layer that is consistent with copper foil layer width, thickness 4 μm ~ 12 μm, get polyurethane adhesive ready, polyurethane adhesive curing agent and ethyl acetate;
S2, adhesive making step, polyurethane adhesive, polyurethane adhesive curing agent and ethyl acetate are according to mass ratio (8 ~ 10): (1 ~ 2): (8 ~ 10) carry out proportioning, fully obtained adhesive after mixing;
S3, composite steps,
First copper foil layer is arranged on Copper Foil emptying roller, and pet layer is arranged on PET emptying roller, and wherein, the unwinding tension of Copper Foil emptying roller is the unwinding tension of 0 ~ 40N, PET emptying roller is 10 ~ 50N,
Copper Foil emptying roller release copper foil layer, copper foil layer forms through one side corona the mode contacted with doubling roller surface with non-corona matsurface after corona matsurface and enters doubling roller,
PET emptying roller release pet layer, first pet layer forms corona matsurface through one side corona, then application of adhesive on the corona matsurface of pet layer is taken turns through coating area by mesh, carry out heat through baking oven again to dry, described oven interior at least has the temperature controlled region of two temperature increment by direction along pet layer, the mode finally contacted with doubling roller surface with the one side of uncoated adhesive enters doubling roller
Copper foil layer is synchronous with the pet layer of coated adhesive by doubling roller, and the semi-finished product shield sheath film formed after laminating rolls in collecting roller, forms semi-finished product shield sheath film spool;
Described doubling roller by fixing roller and mobile roller forms, fixing between roller and mobile roller pressure be 0.4 ~ 0.6MPa, and resting barrel has 10 ~ 40 DEG C of heat drum temperature, and the speed of service of semi-finished product shield sheath film is 50 ~ 90 ms/min;
S4, heat dry curing schedule, and semi-finished product shield sheath film spool to be positioned in baking oven 60 ~ 84 hours, oven temperature is 45 ~ 55 DEG C, and adhesive is solidified completely, and semi-finished product shield sheath film spool forms shield sheath film spool;
S5, dicing process, carry out segment by shield sheath film spool, cuts into the shield sheath film spool section that width is 80mm ~ 200mm;
S6, segmentation coiling step, be divided into the shield sheath film of width 1.5mm ~ 5mm by shield sheath film spool section, and be synchronously wound in storage reel, the shield sheath film of obtained finished product.
Preferably, in described step S3, oven interior has the temperature controlled region of two temperature increment by direction along pet layer, and the temperature range of two temperature controlled region is respectively 45 ~ 55 DEG C, 55 ~ 65 DEG C.
Preferably, in described step S3, the speed of service of semi-finished product shield sheath film is 75 ms/min.
Preferably, in described step S3, the corona value of the corona matsurface of copper foil layer, the corona matsurface of pet layer is 52 dyne.
Preferably, in described step S6, the shield sheath film width of finished product is 1.5mm, and thickness is 13 μm.
Beneficial effect of the present invention is mainly reflected in:
1. adopt the shield sheath film with copper foil layer, make shield sheath film have good function of shielding and insulation function, and there is stronger abrasion-proof corrosion-proof performance, more superior to the protection of inner core, improve the quality of superfine cable;
2. shield sheath film is thinner narrower, is the thinlyyest only 13 μm, the narrowest 1.5mm that is only, and make superfine cable thinner thinner, the coiling of shield sheath film is more convenient, and coiling wastage reduces;
3. concise production process, production cost is low, and production efficiency is high.
Accompanying drawing explanation
Fig. 1 is the structural representation that the present invention is applied to the shield sheath film of superfine cable;
Fig. 2 is the structural representation that shield sheath film of the present invention rolls as shield sheath membranous disc body;
Fig. 3 is the schematic diagram that the present invention is applied to the production technology of the shield sheath film of superfine cable;
Fig. 4 is that the present invention is applied to the schematic diagram splitting coiling step in the production technology of the shield sheath film of superfine cable;
Fig. 5 is the schematic flow sheet that the present invention is applied to the production technology of the shield sheath film of superfine cable.
Embodiment
The invention provides a kind of shield sheath film being applied to superfine cable, can play a protective role to the inner core of superfine cable, and shield sheath film self has shielding action and insulating effect.Below in conjunction with accompanying drawing, technical solution of the present invention is described in detail, is easier to make it understand and grasp.
As depicted in figs. 1 and 2, the structure that the present invention is applied to the shield sheath film of superfine cable comprises copper foil layer 1, pet layer 2 and the adhesive layer between copper foil layer 1 and pet layer 23, and copper foil layer 1, pet layer 2 all have corona matsurface 4 towards the one side of adhesive layer 3, copper foil layer, adhesive layer and pet layer three bond one.Wherein, for adapting to the demand of superfine cable, to shield sheath film, there is thickness limits, therefore following restriction is had to copper foil layer, pet layer and adhesive layer, the thickness of copper foil layer is 6 μm ~ 10 μm, and the thickness of pet layer is 4 μm ~ 12 μm, and the thickness of adhesive layer is 2 μm ~ 3 μm.In preferred embodiment, the thickness of copper foil layer is 6 μm, and the thickness of pet layer is 4 μm, and the thickness of adhesive layer is 3 μm, and namely the thickness of shield sheath film is 13 μm, and its ultra-thin thickness can meet the demand of superfine cable.
In addition, as the shield sheath film of superfine cable, be applicable to single core and multi-core superfine cable, and no matter be single core or multicore, the width of its superfine characteristic to shield sheath film all has restriction, widely cannot be wound on the superfine cable of single core, widely also cannot to be applicable on flat-sandwich multiconductor cable, therefore, the width of shield sheath film is 1.5mm ~ 5mm, be preferably 1.5mm, it is lower that narrower its of shield sheath film is wound around difficulty, is also not easy to cause waste of material.In addition, for ease of the packaging of shield sheath film, transport and user demand, as shown in Figure 2, shield sheath film preferably rolls into the coil type shield sheath film of dish, particularly, storage disk body comprises the axis body 6 that both sides have baffle plate, and shield sheath film is wound around and is contained on axis body 6, baffle plate is circular, and the width of distance between two baffle plates and shield sheath film matches.The packaging of certain sheath film can also by sheath film sling N pack etc. along its length.
The present invention is applied to the production technology of the shield sheath film of superfine cable, as shown in Figures 3 to 5, comprises the following steps:
S1, material preparation process, select the copper foil layer of thickness 6 μm ~ 10 μm, width 500mm ~ 650mm, select pet layer that is consistent with copper foil layer width, thickness 4 μm ~ 12 μm, get polyurethane adhesive ready, polyurethane adhesive curing agent and ethyl acetate; Concrete, select the copper foil layer of thickness 6 μm, width 600mm, select the pet layer of thickness 4 μm, width 600mm.
S2, adhesive making step, polyurethane adhesive, polyurethane adhesive curing agent and ethyl acetate are according to mass ratio (8 ~ 10): (1 ~ 2): (8 ~ 10) carry out proportioning, particularly, whole polyurethane adhesive is first poured in mixer, carry out dilution after adding half ethyl acetate again to stir, then limit adds polyurethane adhesive curing agent limit and stirs, and stir after finally adding second half ethyl acetate again, polyurethane adhesive, polyurethane adhesive curing agent and ethyl acetate fully mix rear obtained adhesive; Preferably, polyurethane adhesive, polyurethane adhesive curing agent and ethyl acetate carry out proportioning according to mass ratio 10:2:10;
S3, composite steps,
First copper foil layer 1 is arranged on Copper Foil emptying roller, and pet layer 2 is arranged on PET emptying roller,
Copper Foil emptying roller release copper foil layer, copper foil layer is after one side corona forms corona matsurface, enter doubling roller in the mode that non-corona matsurface contacts with doubling roller surface, the corona value of corona matsurface is 52 dyne, and wherein the unwinding tension of Copper Foil emptying roller is 0 ~ 40N.
PET emptying roller release pet layer, the unwinding tension of PET emptying roller is 10 ~ 50N, first pet layer forms corona matsurface through one side corona, its corona matsurface is that 52 dyne coronas are formed, then application of adhesive on the corona matsurface of pet layer is taken turns through coating area by mesh, preferably, mesh wheel is 120 object mesh wheels, carry out heat through baking oven again to dry, oven interior at least has the temperature controlled region of two temperature increment by direction along pet layer, preferably, by direction, there are two temperature controlled region along pet layer, 45 ~ 55 DEG C are respectively by the temperature range by direction order two temperature controlled region, 55 ~ 65 DEG C, during concrete selection, two temperature controlled region its temperature increment in each interval range, such as be respectively 50 DEG C according to by direction order two humidity provinces, 65 DEG C, or be respectively 55 DEG C, 60 DEG C etc., the mode contacted with doubling roller surface with the one side of uncoated adhesive after eventually passing baking oven enters doubling roller,
The pet layer of copper foil layer and coated adhesive synchronously passes through doubling roller, the semi-finished product shield sheath film formed after laminating rolls in collecting roller, form semi-finished product shield sheath film spool, doubling roller is by fixing roller and mobile roller forms, fixing pressure between roller and mobile roller is 0.4 ~ 0.6MPa, and resting barrel has heat drum temperature, heat drum temperature is 10 ~ 40 DEG C, the collection tension force 10 ~ 90N of collecting roller, the speed of service of semi-finished product shield sheath film is 60 ~ 90 ms/min, be under the revolving force effect of collecting roller, the speed of service of semi-finished product shield sheath film is 60 ~ 90 ms/min, the optimum speed of service is 75 ms/min, when speed is too low, adhesive heat can be caused to dry overlong time, adhesive overdrying, bonding effect is poor, and when excessive velocities, the adhesive hot baking time can be caused too short, adhesive is excessively wet, and bonding effect is poor, and easily produces gap between adhesive layer.
S4, heat dry curing schedule, and semi-finished product shield sheath film spool to be positioned in baking oven 60 ~ 84 hours, oven temperature is 45 ~ 55 DEG C, and adhesive is solidified completely, and semi-finished product shield sheath film spool forms shield sheath film spool;
S5, dicing process, carry out segment by shield sheath film spool, cuts into the shield sheath film spool section that width is 80mm ~ 200mm;
S6, segmentation coiling step, as shown in Figure 4, shield sheath film spool section enters cutting mechanism after pinch roller, cutting mechanism comprises butcher's knife and chopping block wheel and carving knife group, pressure between pinch roller is 3 ~ 4MPa, shield sheath film spool section is divided into the shield sheath film of width 1.5mm ~ 5mm by cutting mechanism, through being too synchronously wound in corresponding storage reel around mechanism after cutting, and the shield sheath film of obtained finished product.Optimum, the shield sheath film width of finished product is 1.5mm, and thickness is 13 μm.
By describing above and can finding, the shield sheath membrane structure that the present invention is applied to superfine cable comprises copper foil layer, and shield sheath film self has function of shielding and insulation function, more superior to the protection of inner core, improves the quality of superfine cable; Secondly, the sheath film adopting technical solution of the present invention to obtain is thinner narrower, is the thinlyyest only 13 μm, the narrowest 1.5mm that is only, and make superfine cable thinner thinner, the coiling of sheath film is more convenient, and coiling wastage reduces; In addition, concise production process of the present invention, production cost is low, efficiency is high.Above abundant description is carried out to technical scheme of the present invention; it should be noted that; the specific embodiment of the present invention is not by the restriction of foregoing description; those of ordinary skill in the art adopts equivalents or equivalent transformation and all technical schemes formed according to Spirit Essence of the present invention in structure, method or function etc., all drops within protection scope of the present invention.
Claims (10)
1. be applied to the shield sheath film of superfine cable, it is characterized in that: comprise copper foil layer, pet layer and the adhesive layer between copper foil layer and pet layer, and copper foil layer, pet layer all have corona matsurface towards the one side of adhesive layer, described copper foil layer, adhesive layer and pet layer three bond one.
2. be applied to the shield sheath film of superfine cable according to claim 1, it is characterized in that: the thickness of described copper foil layer is 6 μm ~ 10 μm, the thickness of described pet layer is 4 μm ~ 12 μm, and the thickness of described adhesive layer is 2 μm ~ 3 μm.
3. be applied to the shield sheath film of superfine cable according to claim 2, it is characterized in that: the thickness of described copper foil layer is 6 μm, the thickness of described pet layer is 4 μm, and the thickness of described adhesive layer is 3 μm.
4. be applied to the shield sheath film of superfine cable according to claim 1, it is characterized in that: the width of described shield sheath film is 1.5mm ~ 5mm.
5. be applied to the shield sheath film of superfine cable according to claim 1, it is characterized in that: described shield sheath film is rolled as shield sheath membranous disc body by a storage reel.
6. the production technology being applied to the shield sheath film of superfine cable as described in claim 1 ~ 5 any one, is characterized in that comprising the following steps:
S1, material preparation process, select the copper foil layer of thickness 6 μm ~ 10 μm, width 500mm ~ 650mm, select pet layer that is consistent with copper foil layer width, thickness 4 μm ~ 12 μm, get polyurethane adhesive ready, polyurethane adhesive curing agent and ethyl acetate;
S2, adhesive making step, polyurethane adhesive, polyurethane adhesive curing agent and ethyl acetate are according to mass ratio (8 ~ 10): (1 ~ 2): (8 ~ 10) carry out proportioning, fully obtained adhesive after mixing;
S3, composite steps,
First copper foil layer is arranged on Copper Foil emptying roller, and pet layer is arranged on PET emptying roller, and wherein, the unwinding tension of Copper Foil emptying roller is the unwinding tension of 0 ~ 40N, PET emptying roller is 10 ~ 50N,
Copper Foil emptying roller release copper foil layer, copper foil layer forms through one side corona the mode contacted with doubling roller surface with non-corona matsurface after corona matsurface and enters doubling roller,
PET emptying roller release pet layer, first pet layer forms corona matsurface through one side corona, then application of adhesive on the corona matsurface of pet layer is taken turns through coating area by mesh, carry out heat through baking oven again to dry, described oven interior at least has the temperature controlled region of two temperature increment by direction along pet layer, the mode finally contacted with doubling roller surface with the one side of uncoated adhesive enters doubling roller
Copper foil layer is synchronous with the pet layer of coated adhesive by doubling roller, and the semi-finished product shield sheath film formed after laminating rolls in collecting roller, forms semi-finished product shield sheath film spool;
Described doubling roller by fixing roller and mobile roller forms, fixing between roller and mobile roller pressure be 0.4 ~ 0.6MPa, and resting barrel has 10 ~ 40 DEG C of heat drum temperature, and the speed of service of semi-finished product shield sheath film is 50 ~ 90 ms/min;
S4, heat dry curing schedule, and semi-finished product shield sheath film spool to be positioned in baking oven 60 ~ 84 hours, oven temperature is 45 ~ 55 DEG C, and adhesive is solidified completely, and semi-finished product shield sheath film spool forms shield sheath film spool;
S5, dicing process, carry out segment by shield sheath film spool, cuts into the shield sheath film spool section that width is 80mm ~ 200mm;
S6, segmentation coiling step, be divided into the shield sheath film of width 1.5mm ~ 5mm by shield sheath film spool section, and be synchronously wound in storage reel, the shield sheath film of obtained finished product.
7. the production technology being applied to the shield sheath film of superfine cable according to claim 6, it is characterized in that: in described step S3, oven interior has the temperature controlled region of two temperature increment by direction along pet layer, the temperature range of two temperature controlled region is respectively 45 ~ 55 DEG C, 55 ~ 65 DEG C.
8. the production technology being applied to the shield sheath film of superfine cable according to claim 6, is characterized in that: in described step S3, and the speed of service of semi-finished product shield sheath film is 75 ms/min.
9. the production technology being applied to the shield sheath film of superfine cable according to claim 6, is characterized in that: in described step S3, and the corona value of the corona matsurface of copper foil layer, the corona matsurface of pet layer is 52 dyne.
10. the production technology being applied to the shield sheath film of superfine cable according to claim 6, is characterized in that: in described step S6, and the shield sheath film width of finished product is 1.5mm, and thickness is 13 μm.
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| CN201510528735.6A CN105097075A (en) | 2015-08-26 | 2015-08-26 | Ultra-fine cable applied shielding protection sheath film and production technology thereof |
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| CN107293364A (en) * | 2017-07-12 | 2017-10-24 | 苏州市志宏电缆材料有限公司 | A kind of high intensity self-adhesion compound copper-plastics band and preparation method thereof |
| CN107613746A (en) * | 2017-10-27 | 2018-01-19 | 惠州市浩明科技股份有限公司 | Battery screened film |
| CN107887055A (en) * | 2017-11-15 | 2018-04-06 | 肇庆高新区徒瓦科技有限公司 | A kind of internal layer has conductive layer PET rotating cylinders |
| CN109703054A (en) * | 2018-12-28 | 2019-05-03 | 嘉兴泰晟电子有限公司 | Spademan aluminium foil polyester belt production method |
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