CN209471832U - A kind of metallized polypropylene film for capacitor - Google Patents
A kind of metallized polypropylene film for capacitor Download PDFInfo
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- CN209471832U CN209471832U CN201920247399.1U CN201920247399U CN209471832U CN 209471832 U CN209471832 U CN 209471832U CN 201920247399 U CN201920247399 U CN 201920247399U CN 209471832 U CN209471832 U CN 209471832U
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Abstract
The utility model discloses a kind of metallized polypropylene films for capacitor, sheet resistance area including polypropylene basement membrane and plating thereon is constituted, the one end of polypropylene basement membrane in the direction of the width is equipped with area of leaving a blank, sheet resistance area is equipped with thickened area in the other end different from area of leaving a blank, the edge that the polypropylene basement membrane is located at area of leaving a blank is equipped with metal area, the metal area is made of the first metal layer and second metal layer, the first metal layer plating is overlying on polypropylene-base film, the first metal layer is equipped with the groove extended along the length direction of polypropylene basement membrane, second metal layer plating is overlying in groove.The utility model can reduce external humidification intrusion path, reduce the delivery rate of moisture, reach dampproof effect, to extend the service life of capacitor.
Description
Technical field
The utility model relates to a kind of metallized polypropylene films for capacitor.
Background technique
With the rapid development of electronics industry, capacitor is as a kind of important energy storage electronic component, using increasingly
Extensively.Metallic film capacitor (i.e. containing the capacitor of metallized film) is due to excellent mechanical performance and electrical property
Can, such as it is flexible, dielectric loss is low, the variation of high pressure resistant, dielectric constant with temperature and frequency is small, application is more and more extensive,
And gradually replace traditional capacitor.
Metallic film capacitor in the market generally uses the coats of metal such as aluminium, zinc, allumen to make electrode, in order to reach
To the purpose to insulate between positive and negative electrode, design is required on the coat of metal has blank to stay side.But capacitor is in medium mostly
Edge there are blank (do not have cladding portion), moisture is easy to thus enter capacitor, and capacitor life-span is caused to shorten.
Utility model content
The utility model aim is to solve the above-mentioned technical problems in the prior art, provide a kind of for capacitor
Metallized polypropylene film, reduce external humidification invade path, reduce the delivery rate of moisture, reach dampproof effect, thus
Extend the service life of capacitor.
In order to solve the above-mentioned technical problem, the utility model adopts the following technical solution:
A kind of metallized polypropylene film for capacitor, the sheet resistance area structure including polypropylene basement membrane and plating thereon
At the one end of polypropylene basement membrane in the direction of the width is equipped with area of leaving a blank, and sheet resistance area is equipped in the other end different from area of leaving a blank to be thickeied
Area, the edge that the polypropylene basement membrane is located at area of leaving a blank are equipped with metal area, and the metal area is by the first metal layer and the second gold medal
Belong to layer to constitute, the first metal layer plating is overlying on polypropylene-base film, and the first metal layer is equipped with the length direction along polypropylene basement membrane
The groove of extension, second metal layer plating are overlying in groove.
Preferably, the first metal layer is L-shaped in the section of polypropylene basement membrane width direction, the first metal layer include cover in
The epilamellar blocking side covered while and protrude from surface when covering of polypropylene stops the distance of side to thickened area to be greater than and covers
While covering to the distance of thickened area and forming the groove between when stopping, second metal layer plating is overlying on side and stops
Between side.
Preferably, the width on side is stopped to be less than the width of second metal layer.
Preferably, sheet resistance area is made of third metal layer and the 4th metal layer, and the plating of third metal layer is overlying on polypropylene-base film
On, the plating of the 4th metal layer is overlying on third metal layer, third metal layer and is had different between another end margin in the area of leaving a blank
There is certain distance of leaving a blank, the 4th metal layer and different from described not plotted with twice between another end margin in area of leaving a blank
From thickened area includes in the edge while plating the hardware being overlying on polypropylene-base film, third metal layer and the 4th metal layer
Belong to layer, fifth metal layer is formed ladder-like by the end of third metal layer and the 4th metal layer.
Preferably, thickened area further include by fifth metal layer side to the 4th metal layer surface thickness gradual change transition
Layer.
Preferably, the width of thickened area is greater than the width in area of leaving a blank, and the width in area of leaving a blank is greater than the width of metal area.
Preferably, the first metal layer and third metal layer are aluminium coat, and second metal layer and the 4th metal layer are zinc
Coating, fifth metal layer and transition zone are zinc aluminum alloy coating.
The utility model has the following beneficial effects:
The utility model, equipped with metal area, reduces the gap in area of leaving a blank in area of leaving a blank, to reduce external humidification intrusion road
Diameter reduces the delivery rate of moisture, reaches dampproof effect, to extend the service life of capacitor；Aluminium coat is wrapped in zinc plating
The zinc coating in layer outside, confrontation atmospheric oxidn corrosive nature difference is protected, so that it is whole in life to effectively improve the utility model
It produces and the anti-atmospheric oxidn corrosive power in storage process.
Detailed description of the invention
Attached drawing is used to provide the preferred understanding to the utility model, and constitutes part of specification, practical with this
Novel embodiment is used to explain the utility model together, does not constitute limitations of the present invention.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is schematic diagram of the utility model when rolling.
In the figure, it is marked as 1, polypropylene basement membrane；2, it leaves a blank area；3, thickened area；4, metal area；5, the first metal layer；6,
Two metal layers；7, side is covered；8, stop side；9, third metal layer；10, the 4th metal layer；11, fifth metal layer；12, transition
Layer.
Specific embodiment
The optimal embodiment that according to the present invention will be described in detail below with reference to the accompanying drawings.
It as shown in Figure 1 to Figure 2, is a kind of metallized polypropylene film for capacitor of the present embodiment, including poly- third
The sheet resistance area of alkenyl film 1 and plating thereon is constituted, and the one end of polypropylene basement membrane 1 in the direction of the width is equipped with area 2 of leaving a blank, sheet resistance
Area is equipped with thickened area 3 in the other end different from area 2 of leaving a blank, and the edge that polypropylene basement membrane 1 is located at area 2 of leaving a blank is equipped with metal area 4,
The height of 4 upper limb of metal area is identical as the height of 3 upper limb of thickened area, and the width of thickened area 3 is greater than the width in area 2 of leaving a blank, and leaves a blank
The width in area 2 is greater than the width of metal area 4, and area 2 of leaving a blank is intended to ensure in capacitor winding to be had between upper layer and lower layer metallized film
The width selection of certain dielectric strength, area 2 of leaving a blank has certain range, and the too big effective area that can reduce capacitor causes into
This waste, too small to make the high voltage bearing safe distance deficiency of capacitor, be easy to climb electricity generation arcing, metal area 4 is by the first metal
Layer 5 and second metal layer 6 are constituted, and the plating of the first metal layer 5 is overlying on polypropylene-base film 1, and the first metal layer 5 is equipped with along polypropylene
The groove that the length direction of basement membrane 1 extends, the plating of second metal layer 6 are overlying in groove, 6 upper surface of second metal layer and the first metal
5 upper surface of layer flush, and the first metal layer 5 uses aluminium coat, and second metal layer 6 uses zinc coating, and the utility model is in area 2 of leaving a blank
It is interior to be equipped with metal area 4, the gap in area 2 of leaving a blank is reduced, to reduce external humidification intrusion path, reduces the delivery rate of moisture,
Reach dampproof effect, to extend the service life of capacitor, the first metal layer 5 is wrapped in 6 outside of second metal layer, using anti-
The good aluminium coat of atmospheric oxidn corrosive nature protects zinc coating package, so that it is whole in life to effectively improve the utility model
It produces and the anti-atmospheric oxidn corrosive power in storage process.
The first metal layer 5 is L-shaped in the section of 1 width direction of polypropylene basement membrane, and the first metal layer 5 includes covering in poly- third
On alkenyl film 1 cover while 7 and protrude from cover while 7 surfaces blocking side 8, stop side 8 to thickened area 3 distance be greater than covers
The distance of side 7 to thickened area 3, cover while 7 and 8 when stopping between form groove, the plating of second metal layer 6 be overlying on side 7 with
Stop between side 8, stop the presence on side 8 that the insulation blocking to zinc coating can be realized, reduces influence of the moisture to zinc coating；Resistance
The width of rib 8 is less than the width of second metal layer 6.
Sheet resistance area is made of third metal layer 9 and the 4th metal layer 10, in order to reduce difficulty of processing and guarantee sheet resistance effect
Fruit, third metal layer 9 is same to be overlying on polypropylene basement membrane 1 using aluminium coat direct plating, and the 4th metal layer 10 is that plating is overlying on
Zinc coating on third metal layer 9, the plated thickness of third metal layer 9 is identical as the plated thickness for covering side 7, and sheet resistance area is set
The self-healing ability of meter enhancing metalized film, increases the dielectric strength of capacitor；
Third metal layer 9 and different from having certain distance of leaving a blank, the 4th metal layer between another end margin in area 2 of leaving a blank
10 and different from, with twice of distance of leaving a blank, thickened area 3 is included in the edge while plating between another end margin in area 2 of leaving a blank
The fifth metal layer 11 being overlying on polypropylene basement membrane 1, third metal layer 9 and the 4th metal layer 10, fifth metal layer 11 is in third
The end of metal layer 9 and the 4th metal layer 10 forms ladder-like, due to stair-stepping thickened area, increases capacitor body metal spraying
When contact area, improve the adhesive force and effective rate of utilization of metal spraying material, thickened area 3 further includes by fifth metal layer 11
The gradually smaller transition zone 12 of the surface thickness of side to the 4th metal layer 10.
Working principle of the utility model is:
The utility model first reversely folds the metallized polypropylene film of two layers of the utility model when rolling capacitor
Adding, i.e. the metal area 4 on upper layer faces the thickened area 3 of lower layer, and the area 2 of leaving a blank on upper layer faces the transition zone 12 of lower layer, and
It is provided with misalignment area between the side on upper layer and the side of lower layer, the stepped ends of misalignment area face fifth metal layer 11, such as
It is wound again shown in Fig. 2, after being superimposed on two layers and capacitor core is made, metal area 4, area 2 of leaving a blank are plus misalignment area, just more
Compensation thickened area 3, i.e. fifth metal layer 11 and transition zone 12 eliminate vapor deposition hidden danger and capacitor later period end face metal spraying
Hidden danger is scalded, the dielectric strength of entire capacitor is increased, the utility model is equipped with metal area 4 in area 2 of leaving a blank, and reduces area of leaving a blank
2 gap reduces the delivery rate of moisture, reaches dampproof effect, to extend capacitor to reduce external humidification intrusion path
The service life of device, the first metal layer 5 are wrapped in 6 outside of second metal layer, are plated using the good aluminium of anti-atmospheric oxidn corrosive nature
Layer protects zinc coating package, to effectively improve the whole anti-aerial oxygen in production and storage process of the utility model
Change corrosive power.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, although ginseng
The utility model is described in detail according to previous embodiment, it for those skilled in the art, still can be with
It modifies to technical solution documented by previous embodiment or equivalent replacement of some of the technical features.It is all
Within the spirit and principles of the utility model, it is practical new to should be included in this for any modification, equivalent replacement, improvement and so on
Within the protection scope of type.
Claims (7)
1. a kind of metallized polypropylene film for capacitor, the sheet resistance area structure including polypropylene basement membrane and plating thereon
At the one end of polypropylene basement membrane in the direction of the width is equipped with area of leaving a blank, and sheet resistance area is equipped in the other end different from area of leaving a blank to be thickeied
Area, which is characterized in that the edge that the polypropylene basement membrane is located at area of leaving a blank is equipped with metal area, and the metal area is by the first metal
Layer and second metal layer are constituted, and the first metal layer plating is overlying on polypropylene-base film, and the first metal layer is equipped with along polypropylene basement membrane
Length direction extend groove, second metal layer plating be overlying in groove.
2. a kind of metallized polypropylene film for capacitor according to claim 1, which is characterized in that the first metal
Layer it is L-shaped in the section of polypropylene basement membrane width direction, the first metal layer include cover in polypropylene it is epilamellar cover side with
And protrude from and cover in the blocking on surface, stop the distance when the distance to thickened area is greater than and covers to thickened area, covers
The groove is formed between when stopping, second metal layer plating is overlying between when stopping.
3. a kind of metallized polypropylene film for capacitor according to claim 2, which is characterized in that stop side
Width is less than the width of second metal layer.
4. a kind of metallized polypropylene film for capacitor according to any one of claim 1 to 3, feature exist
In sheet resistance area is made of third metal layer and the 4th metal layer, and the plating of third metal layer is overlying on polypropylene-base film, the 4th metal layer
Plating is overlying on third metal layer, third metal layer and certain not plotted different from having between another end margin in the area of leaving a blank
From, the 4th metal layer and different from distance of leaving a blank described in having twice between another end margin in area of leaving a blank, thickened area is included in
The fifth metal layer being overlying on polypropylene-base film, third metal layer and the 4th metal layer, fifth metal layer are plated simultaneously in the edge
It is formed by the end of third metal layer and the 4th metal layer ladder-like.
5. a kind of metallized polypropylene film for capacitor according to claim 4, which is characterized in that thickened area is also
The transition zone of surface thickness gradual change including the side by fifth metal layer to the 4th metal layer.
6. a kind of metallized polypropylene film for capacitor according to claim 5, which is characterized in that thickened area
Width is greater than the width in area of leaving a blank, and the width in area of leaving a blank is greater than the width of metal area.
7. a kind of metallized polypropylene film for capacitor according to claim 4, which is characterized in that the first metal
Layer and third metal layer are aluminium coat, and second metal layer and the 4th metal layer are zinc coating, fifth metal layer and transition zone
It is zinc aluminum alloy coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920247399.1U CN209471832U (en) | 2019-02-27 | 2019-02-27 | A kind of metallized polypropylene film for capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920247399.1U CN209471832U (en) | 2019-02-27 | 2019-02-27 | A kind of metallized polypropylene film for capacitor |
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| Publication Number | Publication Date |
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| CN209471832U true CN209471832U (en) | 2019-10-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920247399.1U Active CN209471832U (en) | 2019-02-27 | 2019-02-27 | A kind of metallized polypropylene film for capacitor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111613442A (en) * | 2020-06-21 | 2020-09-01 | 无锡鑫聚电子科技有限公司 | High-molecular dielectric medium for capacitor and metallized film |
| CN111863446A (en) * | 2020-08-16 | 2020-10-30 | 南通新江海动力电子有限公司 | Metallized film for slowing down capacitance capacity loss in humid environment |
-
2019
- 2019-02-27 CN CN201920247399.1U patent/CN209471832U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111613442A (en) * | 2020-06-21 | 2020-09-01 | 无锡鑫聚电子科技有限公司 | High-molecular dielectric medium for capacitor and metallized film |
| CN111863446A (en) * | 2020-08-16 | 2020-10-30 | 南通新江海动力电子有限公司 | Metallized film for slowing down capacitance capacity loss in humid environment |
| CN111863446B (en) * | 2020-08-16 | 2021-11-26 | 南通新江海动力电子有限公司 | Metallized film for slowing down capacitance capacity loss in humid environment |
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