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1 Showa 1974/3 / 1 Patent Office Director Hideyuki Yukito 1 'Patent claim 1-1 * 2 * 20 inventor
3 of the lI * mentioned in patent claim-Patent applicant ■ Japan Patent Office ■ JPA 5131.8930 Published Japanese Patent Application 51. (1976) s, 78 ■ 昭 ρ ρ ρ ρ [ρ ρ ρ 12 昭
Application date 沼 メ, (197, 41)) y, /, in-office reference number λ / 1 no 1/7 tj -F, f? J no t, f, t
明細 1, description of the invention
Continuous polarization method of film
5. Detailed Description of the Invention The present invention company has a high piezoelectric
constant and continuous gw of polymer film, in detail, with respect to a method, in detail, a
method of depositing a conductive film on both sides by a method such as vacuum evaporation,
life span, printing DC high voltage on a large polymer piezoelectric film! In the continuous
polarization method of heating and cooling while applying film five in the film thickness direction
as a positive electrode and the other mt negative electrode, fill voltage application method
t20EndPage: 1 ○ Take out from the positive electrode surface of the film traveling 9 electrode
ends 1 Is connected to a high voltage application terminal that travels at the same speed as the
fill voltage to apply a high voltage. Air gap of positive electrode conductive film and electrode
terminal! To provide a continuous polarization method that has been lost to quality. When a
polar high polymer film such as polyvinyl fluoride or polyvinyl fluoride yori is used as a
piezoelectric film by applying a direct current high voltage under heating condition, the
magnitude of the piezoelectric travel number is generally 1 applied voltage. It is already known
that the higher the sg pole temperature the higher the temperature. In this polarization method,
the film is stretched in a flat plate shape, the film ejiilK is attached, and the round electrode film
is used as an electrode to apply a direct current high voltage at a predetermined temperature, but
it is 1 am-g. It is impossible to partially stack the film of eclipse food by the patch type genus
pole method of stacked t-one-by-one sheet, and it does not go out of the area of trial manufacture
on desk. As an industrial polarization method, marking of direct current high voltage at a
temperature from the polymer film 會 50 ° C to the softening point: continuous polarization of a
piezoelectric unipolar polymer film capable of continuously writing between applied fixed
electrodes The law is proposed. The inventors of the present invention conducted intensive
studies at the industrialization stage to use a polar polymer film and a polyfluorinated yylidene
film as a piezoelectric element in 41, and as a result, it has a large It defect in the above
continuous polarization method and is smooth. Found that it was impossible to perform
continuous polarization. That is, the piezoelectric constant of the piezoelectric film which can be
used as an industrial material to 41% for practical use as an acoustic transducer OS moving film
is I. 810X100 JJJJJ1. An extremely large value of 6m8 * u- is necessary for the 20X10C name,
and for this purpose, for example, a DC high voltage of 500- to 100OK 'V 151 for about 120 ° C
is applied for at least 2 minutes or more. It is difficult for equipment in the case of the relief
polarization method in which a high voltage is applied while the IC11 film traveling on the
application 15 electrode is in contact. In addition, in the fixed electrode, the conductive film
deposited on the film by the electrode may be damaged, and at the same time, an air gap is
created between the applied electrode and the conductive film to increase the contact resistance,
by the high voltage 1 phenomenon: ll trigger Nana electricity.
This toe discharge also occurs from other parts of the application electrode and accelerates the
oxidation of the metal deposition surface such as x ram, thereby damaging the conductive film,
and [K scatters the conductive film by dielectric breakdown. No piezoelectric film can be obtained
which can be used for practical purposes by perforating the film. This is a particularly serious
drawback since it is necessary to make the voltage application time as long as 2 minutes or more
in order to obtain a sufficient piezoelectric constant. 41 ic polymer piezoelectric 74 lum is polar
and has a large dielectric constant, and due to the dielectric action by the application of a voltage
at the time of polarization, an energy of 9 is stored. As is well known, the magnitude of this
energy is proportional to the product of the capacitance of the tundenser and the square of the
voltage applied to the mark 15 and proportional to the product of the electrode area of the
capacitance expansion film and the dielectric constant of the film. Therefore, the film 'in the lE
pole has one large energy because the voltage is applied and the area is large. If it becomes a 20condenser and it breaks down during filming, it will cause a large amount of heat to be generated
* as the amount of discharge *, so the discharge phenomenon of cast iron will occur. Because of
the large heat of the breakdown diameter of the pinhole due to the phenomenon, the pinhole 5
will become carbonized. First, the inventors of the present invention reduce the amount of
discharge at the time of dielectric breakdown and insulate the electrically self-healing portion C
at a portion not to be coated with a specific width, and provide an insulating band between the
specific portions. A method of limiting the polarization length St and reducing the capacitance of
the film during polarization to continuously carry out heating and polarization cooling is
proposed. The present invention separates the method of reducing the capacitance to the
continuous polarization and separates the operation defects due to the printing and slaughtering
while contacting the voltage applied electrode) and the 15 ilium positive electrode soda. fIR 1provide. That is, in continuous polarization of a traveling polar polymer film coated with a
conductive film on both sides, separated by an insulator and separated by an insulator 04) at
least each conductive film, EndPage: 2 ○ also has one electrode terminal The terminal tN11a is
attached and the film is moved and carried to the jIc pole part, and a voltage application terminal
which travels in the same direction and at the same speed as the electrode and the electrode in
the polarization part Km is a voltage application terminal tII, an O voltage application terminal
Apply a high DC voltage from the [Continuous edge 59 return to the successive polarization
method and device Kll. 40″eある。 For example, at least 41- electrodes are connected
(conducted using a conductive adhesive) for each continuous conductive film while one
continuous electrode is divided by each insulating zone. It can also be carried out by means of
running the film 10 times with the film, but using a film having both INK conductive films and
aligning them so as to make the circle # face each other having a discontinuous conductive film
separated by insulating bands. According to the method in which at least one O electrode 151m
is embedded in and fixed to the good conductive film 11 separated by the insulating band and
fixed, there is no need for using an adhesive or the like, and it is w1i1.
Details tI by the following 1111! For the sake of light. In 1E, one company uses a conductive film
on both sides and a conductive film on one side. 2 is a W + m polymer film 2c; Irum, 3% 4 is a
conductive film-To The conductive film 14 is divided at regular intervals by an insulating band 5
which is not attached to the conductive film '111. The conductive film 4t) @ @ positive electrode
side, continuous and good conductive film st cathode (earthing electrode), is provided on the side
surface to break the 5-short tll between conductive black and 4 Insulation band (margin part).
Fig. 2 shows an example of an apparatus for applying the method t11 of the present invention! !
In the case of using a book-like quadruple film, it is good. 7. Pull out the film from the roll-like
conductive film-deposited film 1.1 'wound with the positive electrode side being the inner side 10
of the cathode KM on the inside KM, 7.7'. The positive electrode face of 4.41 is continuously fed
in the form of overlapping blonde through the guide rails. Insert the nine electrodes 15 terminals
8 made of metal foil or the like in #I to be superimposed, between the positive electrode face 0IIK
tatami run,-! , 9 'contact with the conductive film by treating it. It is superimposing that this
electrode terminal is in close contact and the air gap with the conductive film is eliminated, and
in some cases, the terminal 20 is pre-filled with a conductive paint etc. It is also possible to fix it
with conductive paint when two sheets of film are used in a sheet by putting conductive paint on
both sides of the terminal paint. The number 1 of the electrode terminals 8 can be selected one
or more for each of the intermittent conductive film blacks and can be arbitrarily selected, but
preferably one for each of the conductive film blacks. Two chapters! One terminal · in contact
with the adjacent conductive film 3 is attached so as to sandwich the insulating band 5. The film
in which the '-electrode terminal is inserted is sent to a heating oven of 1 s, which has 10 rolls
and 110 rolls and passes through 12 cooling rolls. One end of the heating chamber is grounded.
At the same time as the electrode terminal 6 reaches 120 minutes of cooling and heating, it is
taken into a 1sO disk which is synchronized with the heating of 1 ink in a synchronous manner
and the chuck 16 loses its electrode end to heat the U- High DC voltage is applied to the LE II KJE
* film. The film bounded by the single-silver band S is heated by a heating roll KI of a 嘔 3 [a
specific polarization section j [K is increased by a touch, and a specific DC voltage is applied for a
certain period of time, After being cooled, the electrode end 10 5 is released from the chuck 6.
In the case of the figure, an electrode terminal 8-1.8-2 is provided before and after each
conductive film 40 divided by the insulating band 9, 9 at the same time as the front terminal 8-1
is in contact with heating. A voltage is applied to the conductive film 4 and a voltage is applied to
most of the films 1a even after cooling, and the electrode terminal 8-2 at the rear stage is
released from the chuck 16 at a position of 14 Torr almost affects the pressure application. From
the fact that it does not occur, the O piezoelectric constant does not differ in the film between the
insulation bands. In addition, WII polymers are widely used as high-piezoelectric constant tubes,
and are generally used after being abraded and distributed. ! Since the film has 20EndPage: 30
quality, a film is pinched in contact with the heating roller of 13 by providing a cooling chamber
12.14 to prevent the film dimensional change during polarization and also by 1 cooling chamber
14 It is possible to freeze and stabilize the size of the thermally polarized film and the internal
molecular strain. It is more preferable to lower the polarization film cold-retention mII gate Th
voltage to zero. In the experience of this li @ person, when the applied voltage is zero before
cooling and OII slow cooling is nine, the voltage after cooling is zero and it is clear that the
piezoelectric constant is reduced by 5 to 10% compared to the nine piezoelectric films. V After
cooling, the polarized film is appropriately weighed to 18,190 godet rolls and either rolled onto a
20.21 roll under voltage-applied conditions or cut into piezoelectric elements, either%- It can be
processed. ・ The length of the conductive film between the insulation bands in the both lateral
direction of the positive electrode is short and the discharge time at the time of discharge at the
time of hs insulation breakdown is small, but the polarization yield is improved. If the number of
insulation zones is 9 or t, the number of insulation zones will be the cause of impairing the
workability. Therefore, it is desirable to make the distance between the insulation bands as long
as possible. Therefore, 10.11 for the purpose of preventing transfer of polarization voltage to
workers such as “′ ′ ′ ′ ostmt * t, ′ ′ 1 · 0 · 5 ′ ′ even if the distance between
insulation bands is increased. And, it is preferable to be able to adjust the film length between the
insulation bands, by providing a device t- such as a pair of godet rolls 18.19 so that the paper roll
can be cut several times. FIG. 5 is a perspective view showing a method of applying a voltage
according to the apparatus of FIG. That is, 22 protective films for protecting the conductive film
of the film are wounded on the 13 heating rolls which are heated to the electrodeizing
temperature by the heating element through 21 ones tally disodium soda. An electrode film 10
'inserted into a fixed gap of the positive electrode at 8 is closely attached on the heating roll and
is eaten on the roll which immediately heats up to 1 m @ at the polarization temperature. Move
at the same speed without.
15OFI’ls213 □、ヶl’/%! 4 ′。 ○ The slip ring rotates in
synchronization with the 13 heating rolls, and the position of the electrode terminal mounted
between ex and the disc 15KJl! The 1 and 9 chucks should be positioned on the same
circumference. The electrode terminal 21H) The cooling roll 121 is in close contact with the
heating roll of 13 straight line # The electrode terminal 8tIll with 16 channels by means such as
25 air cylinder, normal voltage 1i-15 through the slip ring 24 It is boosted and rectified by DC
high voltage generation mounted on a disc and applied from the 260 high voltage application
terminal. In this way, the contact resistance is generated because the KWL pole film positive
electrode face Kll has a fixed electrode terminal and the high voltage-application terminal move
in synchronization in a synchronous manner, so that the generation of a discharge at the contact
point is stable without any problem. If the positive pole of the positive electrode and the voltage
application end t can slide in a continuous polarization mode, the air gap of the electrode
terminal can be made zero and the 2nd 211% @ 5 @ @ @ light can be determined Not-for
example, Tylum regular 11 tll Ks + on a heated roll. There is a method to apply a high voltage by
moving a voltage application terminal at the same speed as film 1 by pressing a voltage
application terminal on it. Furthermore, the number of processed films to be overlapped and
combined is the one-on-one bird efficiency that is not short circuited during polarization, and the
heating constant temperature time tube change to determine the piezoelectric constant 5 same
purpose 28 similar heating rolls There are many conceivable ways, such as changing the heating
temperature of each of the plurality and arranging them in multiple floors. The present invention
will now be described by way of examples. One example: 10% width of a polyvinylidene fluoride
resin obtained by suspending heavy metal by means of vacuum evaporation on both sides of a 9micron-thick stretched film base by vacuum evaporation method. Leaving unmasked masking
and having a thickness of 2 to 5 Q / d to obtain a 9-meta 15-rise film. Steaming with trout in the
middle part! Insulating bands with the ability to control the deposited film in the transverse
direction perpendicular to the surface are made 10 間隔 wide, 5 m apart, and the positive
electrode face and ridge thickness! One foil of $ 71 width 5G-length-560 ■! EndPage: 4 ○ in the
conductive paint as an electrode terminal so that the positive electrode is charged with 1s gap in
the positive electrode soda, 極 OX pole Tsuirumu ta 4 s / winO 魔 p 送, temperature 311toco
heating ■-while making the film in close contact with traveling #- Apply for 7007t DC! After
applying for a minute and then cooling with 1 s-COW-le, the applied voltage dropped to zero'g-t.
Obtained piezoelectric film O piezoelectric i! 歇: 7.1 to 7.5 × 10−'a at a31, g + s, e, a, u, Il + at an
industrially usable high-performance O piezoelectric film was continuously obtained.
ツ O o ツ Tillum o @ II destruction by high voltage application is concentrated on the film springloaded to the heating roll, but evaporation Al (= self-healing action to make ram fly to make
aluminum lam O fly 11 L black-less than and usable for practical use ') 9). □ Absolute
termination at Sumi pole terminal portion Even if continuous polarization was possible without
short circuit even if there was a continuous piezoelectric film obtained by the above O, even if it
was possible to use J'1ll, it was optional As a piezoelectric heavy-duty that is easy to use by
taking all shape and size, as a vibrating membrane of an acoustic transducer, as a pressuresensitive single element of an electromechanical transducer, etc. Brief description of the
drawings, # 1 @ is a perspective view q showing a film having a conductive film on both sides
used in the present invention. The 21st il is a plan view of the present invention 5 continuous
polarization method, and FIG. 3 is the zE * vs. It is a detailed cutaway view. 1 gm pole film 2 :: w
polar polymer film 3.4: conductive film 5: insulating zone 6: margin portion = electrode terminal
12.14: cooling *-At "'1 S: heating roll 16: check 17: direct current Voltage generator 26 = voltage
application terminal more than 5 generations staff valet Shibuya layer 0 EndPage: 55, list of
attached documents (1) specification 1 case (2) drawing 1 case (8) application form duplicate
copy (4) delegation 1 letter 6, other than the above-think Fukushima series Iwa! AA & Livestock *
'1. z1s book place aside 11 procedure correction book patent m jurisdiction Hideo Saito 1
indication of the case 1974 patent application No. 1048! 2. Name of Invention 2, Name of
Invention 71 Name of Invention: Continuous polarization method of Rum 3, Relationship with
person making corrections Intellectual property requester Freha 111 I Kuukui, Tsu (110) Toba
Chemical Industry Co., Ltd. 4, Representative mail Number 103 Tokyo Chuo-ku, NihonbashiHoridomecho 1st-Chome 8 Shiba Chemical Industry Co., Ltd. (6671) Attorneys at work in
Shibuya. 5, date of correction instruction · 01) 1 mm narrow narrowly correct the claim range as
follows 1
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