CN207052452U - A kind of low noise Metallized polyester film - Google Patents
A kind of low noise Metallized polyester film Download PDFInfo
- Publication number
- CN207052452U CN207052452U CN201720932861.2U CN201720932861U CN207052452U CN 207052452 U CN207052452 U CN 207052452U CN 201720932861 U CN201720932861 U CN 201720932861U CN 207052452 U CN207052452 U CN 207052452U
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- polyester film
- sound
- absorbing layer
- low noise
- metal
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Abstract
The utility model provides a kind of low noise Metallized polyester film, including polyester film, the polyester film surface is stacked gradually provided with the first sound absorbing layer, the second sound absorbing layer and the coat of metal, and some vacuum sound insulation chambers are provided between second sound absorbing layer and the coat of metal.The utility model can caused noise in absorption capacitor work, and make noise and extraneous effectively isolation.
Description
Technical field
It the utility model is related to the production technical field of capacitor, and in particular to a kind of low noise Metallized polyester
Film.
Background technology
Metallized film capacitor is to replace metal foil as electrode in the surface of polyester film evaporation layer of metal film, because
The thickness of layer of metallized film is much smaller than the thickness of metal foil, therefore volume is also more much smaller than type metal foil type electric capacity volume after winding.
The great advantage of metalized film electric capacity is self-healing feature, is lacked if so-called self-healing feature is exactly thin film dielectrics due to existing in certain point
Fall into and puncture short occur under overvoltage effect, and the metal layer of breakdown point can evaporate in instant melting under arcing
And formed very little without metal area, make two pole pieces of electric capacity again mutually insulated and remain to work on, therefore greatly
Improve the reliability of capacitor work.But electric capacity is in the operating condition, electric current is spilt into from flat end face, caused by electric current
Metal film resonance sound easily tends to sub-prime two sides, and to pass ripple, homogeneity poor, produces excessive current resonance sound.Therefore, capacitor
The current noise that inside is sent can be heard by human ear, and existing electric capacity absorbing sound and lowering noise poor performance.
Utility model patent low noise tension plastic film capacitor (Application No. 201420444120.6) is by shell, capacitor
Sub-prime and lead composition, the capacitor element are the coiling of screen banding pattern metallized film.Its architectural feature is the screen banding pattern metal
Change the composite membrane that film is polypropylene film top layer plating aluminium film, aluminium film side is concordant with polypropylene film, and aluminium film opposite side is
Without departing from the free margins of polypropylene film；The coiling is in cylinder, and plug is provided with insulated plastic particle in the core hole of coiling,
The gap of coiling is filled out provided with wax.In addition coiling appearance can also be coated with insulating powder.The metallized film of the utility model
Adherence is good, and the local vibration of metallized film is avoided under working condition, and noise rejection effect is notable, but its noise reduction
It is still to be improved.
Therefore be badly in need of providing one kind can caused noise in absorption capacitor work, and make noise and extraneous effectively isolation
Low noise Metallized polyester film.
Utility model content
The purpose of this utility model is the deficiency for existing metallized polyester film, there is provided one kind being capable of absorption capacitor
Caused noise in work, and make noise and the extraneous low noise Metallized polyester film effectively completely cut off.
The utility model provides following technical scheme：
A kind of low noise Metallized polyester film, including polyester film, the polyester film surface, which stacks gradually, to be set
There are the first sound absorbing layer, the second sound absorbing layer and the coat of metal, if being provided with dry vacuum between second sound absorbing layer and the coat of metal
Sound insulation chamber.
Preferably, one end width of the coat of metal is less than the width of second sound absorbing layer and side is stayed in formation, can carry
The self-healing property of high metal coating.
Preferably, second sound absorbing layer stays the side on side to be provided with sound-absorption hole positioned at described, and noise can go deep into along sound-absorption hole
Material internal, reduce noise.
Preferably, the shape of cross section of the sound-absorption hole is triangle or semicircle, is advantageous to strengthen sound-absorbing effect.
Preferably, the material of second sound absorbing layer is polyurethane, and absorbing sound and lowering noise effect is good.
Preferably, the coat of metal is aluminium coated, and self-healing property is strong.
The beneficial effects of the utility model are：
(1) the utility model is provided with the first sound absorbing layer and the second sound absorbing layer being stacked, and has dual absorbing sound and lowering noise effect, can
Caused noise in effective purifying adsorption capacitor work.
(2) the sound insulation chamber of vacuum is provided between the second sound absorbing layer and the coat of metal of the present utility model, there is good sound insulation
Effect, caused noise and extraneous effectively isolation in capacitor work can be made.
(3) sound absorbing layer of the utility model second stays the side on side to be provided with sound-absorption hole positioned at described, has auxiliary sound-absorbing effect,
Be advantageous to noise absorption.
Brief description of the drawings
Accompanying drawing, which is used for providing, to be further understood and illustrates to of the present utility model.
Fig. 1 is structural representation of the present utility model.
In figure mark for：1st, polyester film；2nd, the first sound absorbing layer；3rd, the second sound absorbing layer；31st, sound-absorption hole；32nd, sound insulation chamber；
4th, the coat of metal；5th, side is stayed.
Embodiment
As shown in figure 1, a kind of low noise Metallized polyester film, including polyester film 1, the surface of polyester film 1 according to
Secondary stacking is provided with the first sound absorbing layer 2, the second sound absorbing layer 3 and the coat of metal 4, if being provided between the second sound absorbing layer 3 and the coat of metal 4
Dry vacuum sound insulation chamber 32.
One end width of the coat of metal 4 is less than the width of the second sound absorbing layer 3 and side 5 is stayed in formation, can improve the coat of metal 4
Self-healing property.
For second sound absorbing layer 3 positioned at staying the side on side 5 to be provided with sound-absorption hole 31, noise can go deep into material internal along sound-absorption hole 31,
Reduce noise.The shape of cross section of sound-absorption hole 31 is semicircle, is advantageous to strengthen sound-absorbing effect.
The material of second sound absorbing layer 3 is polyurethane, and absorbing sound and lowering noise effect is good.
The coat of metal 4 is aluminium coated, and self-healing property is strong.
Advantage of the present utility model is：Can caused noise in absorption capacitor work, and make noise effective with the external world
Isolation.
Preferred application case of the present utility model is the foregoing is only, is not limited to the utility model, although reference
The utility model is described in detail previous embodiment, and for those skilled in the art, it still can be right
Technical scheme described in foregoing embodiments is modified, or carries out equivalent substitution to which part technical characteristic.It is all
Within the spirit and principles of the utility model, any modification, equivalent substitution and improvements made etc., it is new to should be included in this practicality
Within the protection domain of type.
Claims (6)
- A kind of 1. low noise Metallized polyester film, it is characterised in that including polyester film, the polyester film surface according to Secondary stacking is provided with the first sound absorbing layer, the second sound absorbing layer and the coat of metal, is provided between second sound absorbing layer and the coat of metal Some vacuum sound insulation chambers.
- A kind of 2. low noise Metallized polyester film according to claim 1, it is characterised in that the coat of metal One end width be less than second sound absorbing layer width and formation stay side.
- A kind of 3. low noise Metallized polyester film according to claim 2, it is characterised in that second sound-absorbing Layer stays the side on side to be provided with sound-absorption hole positioned at described.
- 4. a kind of low noise Metallized polyester film according to claim 3, it is characterised in that the sound-absorption hole Shape of cross section is triangle or semicircle.
- A kind of 5. low noise Metallized polyester film according to claim 1, it is characterised in that second sound-absorbing The material of layer is polyurethane.
- A kind of 6. low noise Metallized polyester film according to claim 1, it is characterised in that the coat of metal For aluminium coated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720932861.2U CN207052452U (en) | 2017-07-29 | 2017-07-29 | A kind of low noise Metallized polyester film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720932861.2U CN207052452U (en) | 2017-07-29 | 2017-07-29 | A kind of low noise Metallized polyester film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207052452U true CN207052452U (en) | 2018-02-27 |
Family
ID=61497221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720932861.2U Active CN207052452U (en) | 2017-07-29 | 2017-07-29 | A kind of low noise Metallized polyester film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207052452U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113692614A (en) * | 2019-04-18 | 2021-11-23 | 昭和电工材料株式会社 | Sound-absorbing material |
-
2017
- 2017-07-29 CN CN201720932861.2U patent/CN207052452U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113692614A (en) * | 2019-04-18 | 2021-11-23 | 昭和电工材料株式会社 | Sound-absorbing material |
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