TW444036B - Biaxially oriented polyester film for a membrane switch - Google Patents

Abstract

A biaxially oriented polyester film for a membrane switch, which is made from a polyester containing at least 85 mol% of ethylene-2,6-naphthalene dicarboxylate recurring units and which has an endothermic peak with an endothermic energy of at least 0.4 mJ/mg at a temperature of 110 to 160 DEG C. This film is produced by subjecting a biaxially oriented polyester film produced from the above polyester in accordance with a method known per se to the following steps in the order named: (1) the step of heating the film under no strain at a temperature of 150 to 180 DEG C for 1 to 5 hours; and (2) the step of heating the film in an unrolled or rolled state at a temperature of 80 to 122 DEG C for 5 to 200 hours.

Description

Printed by the Consumers' Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs i Δ44 0 3 ^ A7 ____B7_ V. Description of the Invention (1) Technical Field The present invention relates to membranes for membrane switches, and more specifically, to ethylene _ 2 * 6 -naphthalene The dicarboxylic acid ester is a polyester having a main repeating unit, and is a biaxially oriented polyester film for use in a high-temperature-resistant membrane switch for deformation resistance. The conventional technical film opening relationship is as described in "The latest technology of switches> 8-year edition", General Technology Press, issued on September 28, 1984, page 111, using a spacer between the two substrate films. A space is defined between the two substrate films, and the two surfaces of the opposing substrate films are arranged with opposite contact points (electrodes) through the space to press the substrate film on one side. Then, the two contact points are combined and conductive, and can be easily switched on and off by self-pressing or releasing. In recent years, membrane switches are being widely used as keyboard switches for electronic computers, personal computers, and various remote control instrument switches such as televisions, VTRs (recorders and recorders). Since this membrane switch uses the repeated operations of pressing and releasing to perform the switching action, its base film is required to be flexible, that is, resistant to deformation. Conventionally, polyethylene terephthalate (hereinafter referred to as "PET") films are usually used as the base film of membrane switches for reasons such as resistance to deformation, adhesion to electrodes, and adhesion to printing. Often used. However, due to the recent popularization of car audio, car air-conditioning touch instrumentation, or car navigation systems, the use of remote control switches in cars has used the Chinese National Standard (CNS) A4 specification (2 〖 0X297 mm) (please read the note f on the back before filling in this page) Binding · Order -4- 444 036 Α7 Β7 Revision 5. Description of the invention (2) The deformation resistance under high temperature has gradually become the basis of membrane switches The material film is required (please read the precautions on the back before filling in this page). If the PET film is used as the base film, the temperature in the car in summer (about 80 ° C) exceeds that of PET. As the glass transition temperature and the amount of deformation increase, a malfunction of the switch may occur. As a countermeasure for this improvement, there is a method of replacing the substrate film with a polyethylene naphthalene dicarboxylate (hereinafter referred to as "PEN") film having a higher glass transition temperature than that of a PET film. Application No. 7 5 6 10 was filed. That is, in Japanese Patent Unexamined Patent Publication No. 4-7 5 61, it is disclosed that a membrane switch has contact points disposed on opposite sides of each of the two base films, and a base film has a density of 1,375 g. Film switch of biaxially oriented polyethylene naphthalate film with a thermal shrinkage of 1.0% or less when heated at 120 ° C for 30 minutes below 120 cm / cm3. In addition, in Japanese Patent Publication No. 6-4 276, a haze increase rate defined by the following formula when heat treatment at 150 ° C for 2 hours is disclosed: Intellectual Property Bureau, Ministry of Economic Affairs The increase rate of haze printed by Beigong Cooperative Co., Ltd. = Hl: H, X 100 (%) (in the formula, H i is the haze before heat treatment, Η 2 is the haze after heat treatment) is less than 20% ' In addition, the heat shrinkage at this time is a polyester film for a membrane switch made of polyethylene naphthalate, which is 0.5% or less in the long axis direction and the width direction. This paper size is in accordance with Chinese National Standard (CNS) A4 (210 X 297 mm) -5- printed by the staff of the Intellectual Property Bureau of the Ministry of Economic Affairs, cooperative printing of this ester, repeated resistance to deformation, thermal resistance of this carboxylic acid ester, and membrane switch instinct The use of thin film biaxial fixed polyester, the use of temperature-resistant belt-exposed machinery with excellent workability, 444036 V. Description of the invention (3) > ... ~ However, the recent PL law (product liability law) The impact is a partial re-examination of the standard for strain resistance, and even PET films have been pointed out as having insufficient strain resistance. In addition, in the case of using a membrane switch as a pressure sensor, especially in a car equipped with an airbag, in the case of adults and children, the weight sensing method of the sensing method used to change the inflation speed of the airbag, the membrane switch is embedded. When buried in a seat and used as a pressure sensor, the conventional PET film has a large residual strain rate and is not resistant to use. Disclosure of the Invention The object of the present invention is to provide a biaxially oriented polyester film for a membrane switch made of a polyester containing ethylene-2,6-naphthalenedicarboxylic acid as a main repeating unit and used at a high temperature. Other objects of the present invention are to provide a polyester film containing ethylene-1,2-Cai-II as a main repeating unit, and have high-temperature switching performance, dimensional stability, buckling resistance, and the addition of a biaxially oriented polyester film. Still another object of the present invention is to provide a biaxially oriented polyester film for use in machinery or portable switches, such as in a heated car, around a heating container, and the like. Still another object of the invention is to provide a method for producing the polyester film of the present invention as described above. Yet another object of the invention is to provide a membrane switch using the biaxially oriented membrane of the present invention. This paper size applies to China National Standard (CNS) A4 specifications (210 X 297). 1 — 丨 — — — — — — — A · 1111111 a — — — — — — — — k (Please read the item on the back first (Fill in this page again) -6- Printed by the Consumer Cooperatives of the Central Procurement Bureau of the Ministry of Economic Affairs ΛA4 036 Α7 _____B7 V. Description of the invention (4) Still other objects and advantages of the present invention can be obtained from the following description. According to the present invention, the above-mentioned objects and advantages of the present invention are as follows: (A) is made of a polyester containing at least 80 mol% of ethylene-2'6-naphthalene dicarboxylate repeating units, and (B) is 1] Within the temperature range of _〇 ~ 160 ° C, the membrane switch with endothermic energy having an endothermic peak of at least 0.4 m J / mg is achieved with a biaxially oriented polyester film. Detailed description of the invention Detailed description of the invention The biaxially oriented polyester film for the membrane switch of the present invention is made of polyester (A) containing at least 80 mol% of ethylene-2,6-naphthalene dicarboxylate repeating unit. to make. The related polyester (A) is a copolymer containing a homopolymer of ethylene-2,6-naphthalene dicarboxylate and a repeating unit of ethylene-2,6-naphthalene dicarboxylate of at least 80 mol%. As for the dicarboxylic acid component other than 2,6-naphthalenedicarboxylic acid constituting the copolymer, oxalic acid, adipic acid, phthalic acid, sebacic acid, dodecanedicarboxylic acid, isophthalic acid, and the like Phthalic acid, 1 '4 Cyclohexanedicarbonyl acid' 4 '4 > Monodiphenyl dicarboxylic acid, phenylindane dicarboxylic acid, 2' 7-naphthalenedicarboxylic acid, diphenyl ether dicarboxylic acid And other dicarboxylic acids. Examples of the diol component other than the ethylene glycol constituting the copolymer include propylene glycol, trimethylene glycol, tetramethylene glycol, hexamethylene glycol, and cyclohexanemethylene diethylene glycol. Alcohol 'This paper size applies the Chinese National Standard (CNS) A4 specification (210X297mm) --.----- ^-(pack-{Please read the precautions on the back before filling this page) Order. Ministry of Economic Affairs Printed A4A 〇3® A7 _______B7___ by the Consumer Standards Cooperative of the Central Bureau of Standards V. Description of the Invention (5) Neopentyl glycol, ethylene oxide adduct of bisphenol mill, ethylene oxide adduct of bisphenol A 'Diethylene glycol, polyethylene oxide diols. Others' may also contain oxycarbonyl acids such as p-oxybenzoic acid and p-oxyethoxybenzoic acid as copolymerization components. The copolymer may be, for example, part or all of the terminal hydroxyl and / or carboxyl groups blocked by a monofunctional compound such as benzoic acid, methoxypolyethylene glycol, or the like, or it may be, for example, a very small amount of A compound having three or more ester-forming functional groups, such as glycerol, isoprene, and the like, can be copolymerized within a substantially linear polymer range. The polyester (A) is preferably one containing at least 85 mol% of ethylene-2,6-naphthalenedicarboxylic acid vinegar repeating units, and more preferably containing at least 90 mol%. The biaxially oriented polyester film of the present invention may also be made of the above-mentioned polyester (A) and other organic polymer compositions. Related other organic polymers include known polyesters, polyimides, polyimides, polyetherimides, polyolefins, and the like. Even among these other organic polymers, from the viewpoint of compatibility with polyester (A), for example, polyethylene terephthalate, polyethylene isophthalate * polyphthalic acid Trimethylene, polyethylene-4,4tetramethylenediphenyldicarboxylate, polyethylene-2,7-naphthalenedicarboxylate, polytrimethylene_2,6-naphthalenedicarboxylate, Poly (nepentyl) -2,6-naphthalene dicarboxylate, poly (bis (4-ethylendioxyphenyl))-2,6-polyene dicarboxylate polyester is suitable. Among these are polyethylene terephthalate, polyethylene isophthalate, polytrimethylene terephthalate, and polytrimethylene-2 '(Please read the note on the back before filling in This page). · The paper size is applicable to the Chinese National Standard (CNS) A4 (210X 297 mm) -8- Printed by the Central Standard of the Ministry of Economic Affairs and Consumer Cooperatives # 444036 l '· A7 _B7 _ V. Description of the invention (6) 6-naphthalene dicarboxylic acid ester, poly (bis (4-monoethyloxyphenyl))-2,6-naphthalene dicarboxylic acid ester is particularly suitable. The ratio between the polyester (A) and other organic polymers is preferably 100 parts by weight of the polyester (A) and 20 parts by weight of other organic polymers, and 15 parts by weight or less. The polyester (A) in the present invention preferably has 0.40 to 90 d Ι / g, more preferably 0.43 to 0.85 d Ι / g, and particularly preferably 0.45 to 0.80 d 1 / g. The inherent viscosity of g. If the intrinsic viscosity is less than 0.40 Ι / g, the film will become brittle, and burrs will easily occur on the end face after the film has been cut. Sometimes burrs may appear from the burrs, and the film may be broken during the transportation step. It is not appropriate to wait for an exception. In addition, if the intrinsic viscosity exceeds 0.90 d I / g, it is unsuitable because the polymerization often takes a long time and the productivity is poor by ordinary synthesis techniques. In addition, in order to perform special polymerization methods (solid phase polymerization, etc.), it becomes necessary to use dedicated equipment and increase production costs, which is one of the reasons that is not appropriate. Additives such as stabilizers, lubricants, ultraviolet absorbers and flame retardants may be contained in the polyester (A). In order to impart slip properties to the film, it is preferred that the polyester (A) contains a small proportion of inactive fine particles. As for the related inactive fine particles, spherical silica, porous silica, calcium carbonate, bauxite 'titanium dioxide, kaolin clay, barium sulfate, zeolite-based inorganic particles, or myroxy resin particles, Crosslinked polystyrene particles are organic particles. For reasons such as the need to have a uniform particle size, it is better to use a synthetic product than a natural product. All inorganic particles with crystal form, hardness, specific gravity, and color can be used. Added on {Please read the note on the back before filling in this page) Clothing · This paper size is applicable to China National Standard (CNS) A4 (210X297 mm) -9-Printed by the Consumers' Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs, 444036, A7 __B7__ 5. Description of the invention (7) The inactive fine particles in the film may be one or two or more selected from the above examples. The average particle diameter of the inactive fine particles is preferably in the range of 0.05 to 0.5em, and more preferably 0_1 to 3.0 # m. The content of the inactive fine particles is preferably 0.001 to 1.0% by weight, and more preferably 0.03 to 0.5% by weight. The addition period of the inactive fine particles is not particularly limited as long as it is the stage until the polyester (A) is formed into a film | for example, it may be added at the polymerization stage, or added at the time of film formation. In the biaxially oriented polyester film of the present invention, the endothermic energy has an endothermic peak of at least 0.4 mJ / mg in a temperature range of 110 to 160 ° C. The existence of this endothermic peak and the endothermic energy are based on differential heat. Scan type calorimeter (hereinafter referred to as DSC) to confirm. After this endothermic peak is different from the peak indicating the melting heat of the crystal = the temperature at which the endothermic peak appears, and if the endothermic energy is within the above range, the deformation resistance at high temperature is superior, so even when used at high temperature, the membrane switch OmJ / mg。 It also works normally, the endothermic energy should be at least 0.5 mJ / mg, more preferably 0.5 ~ 4. OmJ / mg. In addition, the endothermic wave peak should exist in a temperature range of 1 15 to 1 55 t. The biaxially oriented polyester film of the present invention preferably has a density of 1.345 g / cm3 or more and 1.370 g / cm3 or less, and more preferably 1.350 g / cm3 or more and 1.365 g / cm3 or less. If the density is less than 1.3 5 5 g / cm3, when used as a membrane switch, it can reduce the recovery of the film after deformation by repeated pressing and release (please read the precautions on the back before filling (This page) 袈. The paper size of the book is applicable to China's national standard (CNS M4 specification (210X297)) -10- Λ44〇36 A7 B7_ V. Description of the invention (8) Malfunction occurs, so it is not appropriate. And 'If When it exceeds 1.370 g / c m3, the crystallinity becomes too high, and the thin film loses its elasticity, so it is used as a film (please read the precautions before filling in this 1} switch is not suitable. The biaxial orientation of the present invention Polyester film, under a load of 0.75 kg / mm2, at 80 ° C, after 30 hours of strain increase in any direction, such as the longitudinal direction (MD) and the opposite transverse direction (TD ) Are preferably below 0 · 0 0 0%. If the strain increase exceeds 0.0 7 0%, the use under high temperature is likely to cause the lowering of the accuracy of the membrane switch, so it is not suitable. The increase in strain The amount should be less than 0.065% in the longitudinal direction (MD) and transverse direction (TD), especially less than 0.060%. The biaxially oriented polyester film is under a load of 0.75 kg / mm2 and is treated at 80 ° C for 30 hours. The residual strain after removing the load is in any direction, such as the machine direction (MD). And the corresponding transverse direction (TD) is preferably below 0.9%. If the residual strain amount exceeds 0.90%, even if the load on the switch is removed, the residual film will be deformed, so the film switch The precision of the movement becomes easy to decrease. The residual strain of the printing and printing of the Shellfish Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs is preferably less than 0.85% and more preferably less than 0.080%. The biaxially oriented polyester film of the present invention is preferably in any direction, such as 1% strain strength in the longitudinal direction (MD) and the opposite transverse direction (TD) below 4.5 ~ 7.0 Ckg / mm2). If the 1% strain strength is less than 4.5 (kg / mm2), due to insufficient rigidity of the film or insufficient stretching, the paper size of the film is subject to the Chinese National Standard (CNS) A4 specification ( 2 丨 〇 X 297 mm) -11-Printed by the Consumer Cooperatives of the Central Bureau of Standards of the Ministry of Economic Affairs ^ 444036 A7 _B7 It is clearly stated (9) that the dispersibility tends to increase, which is the cause of the instability of the processing conditions of the membrane switch. In addition, films with a 1% strain strength exceeding 7 · 0 (kg / mm2) often break easily during film formation. The film forming property becomes insufficient, and the productivity becomes easy to decrease. The 1% strain strength in the longitudinal direction (MD) and the transverse direction (TD) is preferably 4 · 7 ~ 6.8 (kg / mm2). The biaxially oriented polyester film of the present invention has Young's coefficients in two orthogonal directions, such as the long axis direction (MD) and the width direction (TD), which are more than 400 kg / mm2 to 700 kg / It is better to be less than mm2. If the Young's coefficient is less than 400 k g / m m 2, the rigidity of the film is insufficient, so it is not suitable. When the Young's coefficient exceeds 700 k g / mm2, a delamination phenomenon occurs when the film is cut, and a large amount of cutting powder is liable to occur. The difference between the Young's coefficients in the two directions is not particularly limited, but it is preferable to be below 150 k g / m m 2. The refractive index of the biaxially oriented polyester film of the present invention in the thickness direction is preferably 1 490 or more and 1. 530 or less, and more preferably 1, 495 or more and 1.520 or less. If the refractive index in the thickness direction is less than 1.490, the film is prone to burrs or cracks during cutting, and the workability is deteriorated, which is not suitable. Further, if the refractive index in the thickness direction exceeds 1.530, the dispersion of the thickness of the film becomes large, and wrinkles (wrinkles) easily occur on the surface of the film, which is not suitable. The biaxially oriented polyester film of the present invention should be expressed as 0. 05 ~ -------- "install-{Please read the precautions on the back before filling this page) The size of the paper is applicable to China Standard (CNS) Λ4 specification (210X297 mm) -12- Printed by the Consumers' Cooperative of the Central Government Bureau of the Ministry of Economic Affairs 444 036 A7 ____B7 V. Description of the invention (10> 0 · 30g / mm2.mm. 24hr water vapor transmission rate If the water vapor transmission rate exceeds 0.3g / m2.mm. 24hr, the water vapor easily penetrates into the switch and is exposed to high temperature and humidity environment and low temperature environment, then condensation will occur inside the switch. There may be cases where erroneous operation occurs, so it is not suitable. The thermal shrinkage of the biaxially oriented polyester film of the present invention at a temperature of 150 ° C for 30 minutes is in either direction, such as longitudinal and The relative transverse directions are all less than 0.20%, and more preferably the longitudinal directions are less than 0. 15%. The heat shrinkage rate at a temperature of 15 ° C for 30 minutes will exceed 0.2. At 0%, the scale change will become larger, and the precision of the switching action will be worsened. In order to prevent the deterioration of planarity, the difference between the heat shrinkage rates in two orthogonal directions is preferably 0.1% or less. The biaxially oriented polyester film of the present invention is preferably The plane orientation coefficient is 0 · 242 ~ 0, 27 ◦. If the plane orientation coefficient is less than 0.242 ', the dispersion of the thickness of the film becomes large, and wrinkles (wrinkles) easily occur on the surface of the film. Also, the plane orientation coefficient If it exceeds 0.27 0, burrs or cracks often occur when the film is punched, and the workability deteriorates. The surface orientation coefficient is more preferably 0.245 to 0.265. The biaxial directional polymerization of the present invention The average surface roughness (Ra) of the ester film is preferably 5 to 200 mm, and more preferably 7 to 150 mm. If the surface roughness (R a) is less than 5 mm, the slippage of the film (please read the back first) Please pay attention to this page before filling in this page) This paper size is applicable to China _ furniture (CNS) A4 specification (210 X 297 mm) -13- Printed by the Central Consumers Bureau of Ministry of Economic Affairs Consumer Cooperatives? 444〇36 A7 ___B7_ 5 2. Description of the invention (n) When the film is rolled into a roll, it is easy to be thin. The thickness of the biaxially oriented polyester film of the present invention is preferably in the range of 1 2 to 2 50. The thickness of the biaxially oriented polyester film of the present invention is preferably in the range of 1 2 to 2 50. The strength and flexibility are more preferably 25 to 250 μm, and more preferably 50 to 200 // m. The biaxially oriented polyester film of the present invention has a thickness dispersion of 10% or less. That is, the dispersion of the thickness refers to the thickness of the film less than 10%, that is, within the range of ± 5%. • If the dispersion of the thickness exceeds ± 5%, the substrate of the membrane switch is used. Even if the same switch is designed and made 'Due to the dispersion of the thickness, the interval between the switches cannot be fixed, so each switch will have different operating conditions, which is not suitable. In particular, in the case of a membrane switch for controlling an explosion pressure of an airbag of an automobile, since a malfunction is directly related to human life, uneven thickness becomes a very important characteristic in this case. The biaxially oriented polyester film of the present invention is a biaxially stretched polyester (A) containing at least 80 mol% of ethylene-2,6-naphthalene dicarboxylate repeating units, and is produced by a known method per se. Polyester film, in the following steps: (1) a step of heat-treating at a temperature between 150 ° to 180 ° C for 1 to 5 hours without stretching, and C 2) in a single sheet state or rolled into a roll The state of the cylinder is subjected to a heat treatment step at a temperature between 80 to 122 ° C for 5 to 200 hours, and is manufactured in this order. The method known per se includes, for example, a temperature between T g ~ (T g + 60) ° C in the vertical and horizontal directions at a magnification of 2.0 to 5.0 times, (please read the note on the back before filling in This page) Binding and binding _ This paper size is applicable to China's national standard < CNS) A4 size (210 / 297g ^) ~ ΔΛΑ036 A7 B7 Printed by the Staff Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs

5. Description of the invention (12) It is preferably 2 · 2 ~ 4. 3 times the unstretched film of biaxially oriented polyester (A) at (Tg + 70) ° C ~ (Tg + 140) ° C (Ding Yun ten 80) ° (: ~ (ding ya + 137) ° (:, especially suitable for (ding boo + 100)) ° C ~ (Tg + 133) ° C heat fixing method for 1 to 100 seconds. The stretching is performed by a commonly used method, for example, a roll method or a tenter method can be used, and the longitudinal, transverse, and longitudinal and transverse directions can also be stretched simultaneously. Relaxation treatment can be performed. In this case, it is advisable to perform relaxation treatment between heat fixing and winding into a roll. As for the relaxation treatment method, in the heat fixing section, cut off both ends of the film, g. At a temperature above the melting temperature, the feeding speed to the film is used to reduce the winding speed. The method is heated by IR heaters between two conveying rollers with different speeds. The method of decelerating the speed of the conveying roller after heating the conveying roller, after the heat is fixed, the hot air is sprayed out. The method of slowing down the winding speed to a lower speed than the supply speed while conveying the rollers on the top, or heating it on the heating and conveying rollers after winding with a film machine and performing heat treatment below T g The method of conveying film to reduce the speed of conveying rollers, or the method of decelerating the speed of rollers in the heating oven or using IR heaters, while decelerating the speed of the rollers in the heating zone before the speed of the rollers in the heating zone Either method can be used. In any case, the speed of the supply side and the deceleration rate of the speed of the take-up side are set to 0.1 to 10% for relaxation treatment. As described above, it is manufactured by a method known per se. The biaxially stretched polyester film is performed in the order of steps (1) and (2) above. And this paper size applies the Chinese National Standard (CNS) A4 specification (210X 297 mm) < R ----- ---- Equipment— (Please read the precautions on the back before filling in this page) Order · Printed by the Consumers 'Cooperative of the Central Government Bureau of the Ministry of Economic Affairs A7 B7 V. Description of the invention (13)' By performing the above relaxation treatment, 150 ° C heat treatment thin When the thermal shrinkage rate at 30 minutes is 0.2% or less in both the vertical and horizontal directions, it is not necessary to perform the above step (1) and only perform the treatment of the above step (2). The step 'is heat-treated for 1 to 5 hours at a temperature between 150 to 180 ° C without stretching. Moreover, after the heat treatment of the above step (1)', the temperature is reduced at a speed of 3 to 25 ° C / hr. It is better to cool (slow cooling treatment) to (Tg-40 of film) t: ~ (Tg-5 of film) ° C. The above step (2) is the film after step (1), or the above relaxation The treated film is then heat-treated for 5 to 20 hours at a temperature between 80 to 122 ° C without stretching. This heat treatment is preferably performed at a temperature from the glass transition temperature (T g) to (T g _ 4 0) ° C of the polyester film. If the heat treatment temperature is lower than (T g-4 0) ° C, the deformation resistance at high temperatures will be developed. Therefore, a very long heat treatment time is required, and production efficiency is deteriorated, which is not suitable. If the heat treatment temperature exceeds Tg of the thin film, the deformation resistance is deteriorated, so it is not suitable as a thin film for a membrane switch. The heat treatment time is preferably 5 to 200 hours from the point of production efficiency, and more preferably 8 to 170 hours. In addition, the heat treatment of step (2) may be performed at any step of the membrane switch manufacturing step after the implementation of step (1). When the film is exposed to a higher temperature than the treatment temperature after the heat treatment in step (2), 'the effect of the heat treatment will be considerably lost'. Therefore, after the heat treatment in step (2), the place is -------- -Installation-(Please read the notes on the back before filling this page) Order • -4 乂 This paper size is applicable to China National Standards (CNS) Λ4 specifications (210 X 297 mm) _, ^ _ Central Standard of the Ministry of Economic Affairs Printed by the Consumer Cooperatives of the Bureau ΛΑ4036 A7 ___B7 V. Description of the invention (彳 4) It is advisable to process the temperature range below the processing temperature (2) The manufacturing step of the membrane switch can also be performed in the drying step after printing. In the case where the heating step has to be performed at a temperature exceeding the Tg of the film in this drying step, before the step (2) is performed, it is preferable to perform the above-mentioned slow cooling treatment at the heating step temperature of the drying step. As for the heat treatment method of step (1), there are a method of heat treatment in an oven in a single sheet state, a method of heat treatment on a heating roller or an IR heater heating section to continuously transfer the film at a very low speed, etc., but it is not affected by this. Qualified by other methods. As for the method of heat treatment in step (2), there are a method of keeping the film itself rolled into a roll after the film is formed, or a method of heat treatment in an oven in a single piece state, and an electrode or a spacer is arranged on the film. The method of winding into a roll or heat treatment in an oven in the state of a single piece, and the method of heat treatment in an oven after being combined into a switch, etc., are not limited by these methods. The biaxially oriented polyester film of the present invention can be advantageously used as a base film of a film. The membrane switch manufactured by using the biaxially oriented polyester film of the present invention is, for example, embedded in the seat of a car and used. Therefore | Especially for cars with airbags. To adjust the action of safety air (especially the inflation speed), it is more suitable to use it in a seat. It can be used as a pressure sensor and start Switch function type is more suitable for film opening relationship. That is, a membrane switch located under the seat when someone is seated on the seat or a membrane switch having a surface sufficient to cover the seating surface of an ordinary adult is given II. Read the notes on the back and fill in this page) -.-- This paper size applies to Chinese National Standard (CNS) A4 (2 丨 OX29? Mm) -17- ΑΔΑ〇36 Employee Consumer Cooperatives, Central Bureau of Economic Affairs, Ministry of Economic Affairs Printed Α7 Β7_V. Description of the invention (15) The switch is “enable to start the inflation speed adjustment system that becomes an airbag. Therefore, when a person is seated, the contact area of each switch or switch will change according to the weight. And detecting the number of contacts or the area of contact 'estimates the weight of the person on the seat, and has two functions of the start switch of the system for setting the inflation speed of the airbag and the pressure sensor for weight detection. The membrane switch of the present invention, which functions as a pressure sensor for weight, can recognize adults and children, and can adjust the inflation speed of the airbag that the car moves during a collision. The present invention will be described. (1) Determination of purity of ethylene-2,6-naphthalene dicarboxylate A thin film sample is dissolved in a measurement solvent (CDC 1 3: CF3C00D = 1: 1), and then iH — NMR measurement is performed to obtain The integration ratio of each signal was calculated. (2) The glass transition temperature (T g) was measured using the scanning calorimeter DSC 2 2 0 manufactured by Seiko Electronics Industry Co., Ltd., and measured under the following conditions. Heating rate: 20 ° C / mi η Sample volume: 10 mg Measured in nitrogen flow under the above conditions Temporarily heat the sample to melt and then quench it again. Measure again under the above conditions "-------- Install-(Please read the note on the back first Please fill in this page again for the paper) The paper size of the book is used in accordance with the Chinese national standard (CNS> A4 specification (2 丨 0X297mm) -18-Printed by the Staff Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs f ^ A4〇36 A7 ___B7_ V. Invention Explanation (16) (3) The endothermic peak temperature and endothermic energy are measured using the cat's sweeping heat measurement device DSC 2 0 manufactured by Seiko Electronics Industry Co., Ltd., and the measurement is performed under the following conditions. Heating rate: 20 ° C / mi η Sample amount : 10 mg determination in nitrogen flow Under the above conditions, the endothermic behavior of the thin film sample is determined by primary differentiation and secondary differentiation analysis to determine the temperature of the peak. At this time, it is obtained from the endothermic side area on the DSC chart corresponding to the energy of the endothermic peak. This area As the temperature rises from the baseline to the endothermic side, the area of the endothermic side that returns to the baseline position after the endothermic peak is continued to rise again, and the area is connected in a straight line from the endothermic start temperature position to the end temperature position to obtain the area (A) . Under the same D S C measurement conditions, I η (indium) was measured with a sample amount, and the area (B) was set to 28.5 m J / mg, and it was calculated according to the calculation formula shown below. Endothermic energy = (A / B) X285 (mJ / mg) (4) Young's coefficient Cut the film into sample width 1 Omm, length 150 mm 'between the chucks set to 1 0 0mm * at tensile speed 1 Min 'chart speed is 500 mm / min. Instron type universal tensile test device stretches. From the obtained load-elongation curve, the tangent of the upright part of the curve is used to calculate the size of the Yang paper. The Chinese national standard (CNS) Λ4 specification (210X297 mm) _ ^. (Please read the precautions on the back before filling this page). -1 Printed by the Shell Standard Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs f Λ44036 a7 B7 V. Explanation of the invention (17) Coefficient. (5) Abbe refractometer (manufactured by Atago Co., Ltd.) is used for the refractive index in the thickness direction. After using Na-D at 2 5 t, the refractive index in the thickness direction of the film is obtained. The measurement was carried out on both sides, and the average refractive index was taken as the refractive index (nz) in the thickness direction. (6) Thermal shrinkage In an oven set at a temperature of 150 ° C, keep the film in an unstretched state for 30 minutes, and use the dimensional change before and after the heat treatment as the thermal shrinkage, calculated by the following formula. Thermal shrinkage (%) = ((L〇—L) / L〇) X100 LQ: distance between punctuation points before heat treatment L: distance between punctuation points after heat treatment (7) Intrinsic viscosity using o-chlorophenol as solvent, at 2値 measured at 50 ° C (unit: d 1 / g) »(8) Crease delamination and whitening rate Cut the film into 8 Omm X 8 Omm * Fold it in half by hand and use a molding machine to specify the pressure P 1 ( kg / mm2) Molded for 20 seconds. The moulded half-folded film is returned to its original state by hand, and the pressure (please read the precautions on the back before filling in this page). Loading,, 1 This paper size is applicable to China National Standard (CNS) A4 specification (210X297 cm) ) -20- AAA 0 3 6 A7 ___B7____ 5. Description of the invention (18) P2 (kg / mm2) is molded for 20 seconds. Thereafter, the sample was taken out, and the length (mm) of the whitened portion appearing in the crease was measured and totaled. (Please read the precautions on the back before filling in this page.) Use each new film sample and fold it with the molding pressure Pl = 4.2, 6. 3, 8 4, 10. 0.5 (kg / cm2), and then Molding pressure P 2 = 1 · 2 6 (kg / cm 2) Open the crease and repeat the measurement. The average average length (mm) of the whitened part of each molding pressure. The ratio of the crease to the total length (80 mm) is used as the crease delamination whitening rate. Delamination). Crease delamination and whitening rate (%) = (Total length of whitened part (mm) / (80mmX 4)) x 00 (9) Density is used in the density gradient using a calcium nitrate aqueous solution as a solvent, using 2 Tritium determined at 5 ° C by floatation. Consumption cooperation with employees of the Central Standard Vehicle Bureau of the Ministry of Economic Affairs Du printed (1 0) Centerline average surface roughness (R a) Measured with a surface roughness meter (Surfcom 111 A manufactured by Tokyo Precision Co., Ltd.), and calculate the average radon as the surface Roughness. (1 1) Strain increase amount and residual strain amount are measured using thermal strain stress manufactured by Seiko Electronics Industry Co., Ltd. The paper size is applicable to the Chinese National Standard (CMS) A4 specification (21 × 297 mm) -21-Central Ministry of Economic Affairs Printed by the Bureau of Consumers' Cooperatives of Standards Bureau A7 B7 V. Description of the invention (19) Setting device TMA / SS 1 20C, measured under the following conditions. Temperature: 80 ° c Load capacity: 0.75kg / mm2 Load time: 30 hours Sample width: 4 mm Sample length (between chucks): 15 mm Apply a load to the thin film sample under the above conditions and keep it After the load is applied for a fixed time (30 hours), the load is removed thereafter. Read the strain amount (S i) of the film at the moment when the load is applied. The strain amount (S2) after the load is applied and held for a fixed time is the strain amount (S3) just after removing the load. Find the load for a certain period of time. The amount of increase in strain and the residual strain after removal of the load in the later state, the ratio of the length (S. = between the chucks) of the sample before the load is calculated according to the following formula, as the increase in strain, the residual strain the amount. Strain increase (%) = (S2—Si) x 100 / S〇 Residual strain (%) = s3x 100 / So (12) 1% strain strength (F1 値) Cut the film into a sample width of 1 Omm, The length is 15 Omm, the chuck is set to 100 mm, the tensile speed is 10 mm / min, and the chart speed is 50 Omm / min. It is stretched by the Instron universal tensile test device, and the measurement is performed in both directions of MD and TD. The obtained load-elongation curve reads the strength at 1% elongation, divided by the original cross-sectional area as the 1% strain strength (kg / mm 2). This paper size applies the Chinese National Standard (CNS) A4 specification {2ΙΟ × 297 mm) (Please read the precautions on the back before filling this page). Binding-22- 036 A7 ___B7 V. Description of the invention (20) (13) side Orientation coefficient (ns) Abbe refractometer (manufactured by Atago Co., Ltd.) was used to calculate the longitudinal (MD), transverse (TD), and thickness (z) directions of the respective films using Na-D wires at 25 ° C. Refractive index. The thin film sample was measured on the surface and the back surface, and the average 値 was calculated as the refractive index in the longitudinal, transverse, and thickness directions. The complex refractive index and the plane orientation coefficient (n s) were calculated from the following two equations. Complex refractive index (△ n) = nMD-nTD plane orientation coefficient (ns) = {(nMD + nTD) / 2} -nz (In these two equations, n MD represents the refractive index in the longitudinal direction, and n TD represents the lateral refractive index. Refractive index, η ζ represents the refractive index in the thickness direction). (1 4) Consumption cooperation of employees of the Central Ministry of Economic Affairs of the Ministry of Economic Affairs of the Ministry of Economic Affairs of the People's Republic of China (Please read the precautions on the back before filling this page) Using an electronic micrometer manufactured by Anlitsu Co., Ltd. (κ _ 312A Type), measuring a length of 2 m along the longitudinal and transverse directions of the film at a needle pressure of 30 g and a walking speed of 25 (mmy / sec) to obtain a continuous thickness chart. Read the maximum and minimum thicknesses from this chart. In addition, for the same sample, the thickness (ern) was calculated from the width (cm), length (cm), weight (g) 'density (g / cm3) and the following formula as the average thickness. The ratio of the difference between the maximum thickness and the minimum thickness to the average thickness was calculated by the following two formulas as the dispersion of thickness. This paper size applies Chinese National Standard (CNS) A4 specification (210X297 mm) -23- 444036 Printed by A7 B7, Consumer Cooperatives of the Central Bureau of Standards, Ministry of Economic Affairs 5. Description of invention (21) Average thickness um) = (weight / ( Width X Length X Density)) x 10,000 thickness dispersion (%) = ((maximum thickness-minimum thickness) / average thickness) X 100 (1 5) evaluation of membrane switch operation at 80 ° C A fixed pressure was applied for 96 hours. After reducing the temperature to 2 5 t while maintaining the pressure, remove the pressure. The respective samples were evaluated with n = 50. After the pressure was removed, the switch section was removed and the number of samples in the FF state of the switch was calculated. ((Number of samples left by the switch section / 50) XI00%) It is evaluated in three stages. 〇: Good (more than 95% probability) △: Usable (more than 80% probability) X: Not available (with less than 80% probability) (1 6) Observation of the film formation state of the film and evaluation based on the following criteria . ◎: No breakage was caused, and extremely stable film formation was obtained. 0: Almost no breakage was caused, and stable film formation was obtained. X: Frequent breakage occurred, and film formation was not stable. (1 7) The processability was evaluated according to the following criteria The film is rational. {Please read the precautions on the back before filling this page) The paper size is in accordance with the Chinese National Standard (CNS > A4 size (210X297 mm) -24- 444 03 6 Printed by the Consumers Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs A7 B7 5 Explanation of the invention (22) 〇 ·· No overlap phenomenon is caused. 'Good handling X: Superposition phenomenon occurs, poor handling (1 8) Processability is the perforation of the film, punchability, flatness, etc. The processability at the time of membrane switching is evaluated according to the following criteria: :: Perforation, punchability are very good, and the shape of the end face in the cutting step is good, and the flatness of the conductive paste or carbon paste after drying is good. 0: During cutting It is found that there are some cases where the shape of the end face is bad, or the conductive paste or carbon paste is found to be flat and bad after drying, but it is not a practical problem. X: Perforation and stamping are bad, and it is cutting. Steps such as defective products due to poor end surface shape, or defective products due to poor planarity of conductive paste or carbon paste after drying. Example 1 Dioxide containing an average particle diameter of 0.30 # m Polyethylene-2,6-naphthalene dicarboxylate having a silicon particle of 0, 2% by weight and an inherent viscosity of 0.60 is melt-extruded through a die slit to make it die-cast. The drum is cooled and solidified to produce an unstretched film. This unstretched film is stretched by 3.6 times in the longitudinal direction (machine long axis direction) and 3.8 times in the transverse direction (width direction) in order. It is stretched and heat-fixed to obtain a biaxially oriented film with a thickness of 7 5 and rolled up --- ----please read the precautions on the back before filling this page. (CNS) A4 specification (210X297 mm) -25- A7 B7 V. Description of the invention (23) Rolled. After that, 'the heating section using a 1 R heater is transported, and the roll after the heating section is simultaneously rolled. 0 5% The drum speed is decelerated by 1% compared to the drum speed before the heating section. The obtained biaxially oriented film has a thermal shrinkage of 0.5% in the longitudinal direction while being held at 150 ° C for 30 minutes. , 0.02% in the transverse direction, the intrinsic viscosity of the film is 0 _ 55dl / g, the density is 1. 359 g / cm3, the refraction in the thickness direction The rate is 1.498, and the Young's coefficients in the longitudinal and transverse directions are both 6 40 k g / mm2. The sampling width of the obtained biaxially oriented film is 100 mm and the length

A 2000 m film was wound on a coil core with a diameter of 165 mm as a sample roll. In this state, the temperature was raised to 115 ° C over 24 hours, and kept for 24 hours. After 24 hours cooling to room temperature. The heat-treated film showed that the peak of the crystal melting heat was an endothermic peak measured by DSC measurement. The peak temperature was 13.5 ° C, and the endothermic energy was 1.0 OmJ / mg. Printed by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs (please read the precautions on the back before filling this page) On this PEN substrate film, screen printing silver paste is used to form conductive circuits, and screen printing carbon paste is used to make printing contacts The point (electrode) is dried at 1 ◦ 0 ° C for 20 minutes. After the switch sheet is prepared, an adhesive for bonding two sheets of the sheet is used, and a thin film styrene-butadiene resin is used as the film switch. Of spacers. The physical properties and evaluation of the biaxially oriented film and the evaluation results of the operability of the membrane switch are shown in Table 1. Example 2 This paper size applies the Chinese National Standard (CNS) A4 specification (210X297mm) -26- Printed by the Central Standards Bureau of the Ministry of Economic Affairs, Shellfish Consumer Cooperatives, AAD 036 A7 B7 V. Description of the invention (24) Except for the examples 1 After film formation, the heat treatment after winding into a roll shape was maintained at 1 15 ° C for 8 hours, and the film was opened with the remainder being formed in the same manner as in Example 1. The evaluation results are shown in Table 1. Example 3 A film switch was obtained in the same manner as in Example 1 except that the heat treatment after rolling into a roll shape after film formation in Example 1 was maintained at 95 ° C for 48 hours, and the film was formed in the same manner as in Example 1. The evaluation results are shown in Table 1. Example 4 An electrode and a spacer were provided on the film in Example 1, and dried in a single-piece state at 150 ° C for 5 minutes, and the state was maintained from the drying temperature to 115 ° C at 15 ° C. After cooling at a cooling rate of ° C / hr as a pre-heat treatment, heat treatment was performed at 115 ° C for 24 hours. The other conditions were the same as in Example 1, and a membrane switch was obtained. The evaluation results are shown in Table Example 5. Except in Example 1, the copolymerized polyester with an intrinsic viscosity of 0.62 (ethylene glycol 2'6-naphthalene dicarboxylate unit 90mo 1%, bis (4— (2- Ethoxy) phenyl) sulfone-2,6-naphthalene dicarboxylic acid ester units (abbreviated as BPS-E0) polyester in the table) are used as raw materials. 1Membranes are made in the same way to obtain membrane switches. The evaluation results are shown in Table 1. This paper size applies to Chinese National Standard (CNS) A4 specification (210X 297 mm) ^ ---------- 1 Calling Pack-< Please read the precautions on the back before filling this page] Order -27- AAA 〇36 A7 B7 Printed by the Consumer Cooperatives of the Central Bureau of Standards of the Ministry of Economic Affairs of the People's Republic of China. 5. Description of the Invention (25) Example 6 Except in Example 1, copolymerized polyester (ethylene One 2,6-naphthalene dicarboxylic acid unit 95mo 1%, ethylene-4,4-diphenyl dicarboxylic acid unit (abbreviated as 4, 4 D) 5 m〇1% in the table as the raw materials, the rest A film was formed in the same manner as in Example 1 to obtain a film switch. The evaluation results are shown in Table 1 ^ fc Comparative Example 1 After the film was formed in Example 1, the film was rolled into a roll, and at any step of the combined film switch, the film was below Tg to (Tg-4 0) t: above The film is formed without heat treatment at a temperature. The evaluation results are shown in Table 1. As a film for a membrane switch, its deformation resistance is insufficient. The performance of a membrane switch is not satisfactory. Comparative Example 2 A film switch was obtained in the same manner as in Example 1 except that the heat treatment after winding into a roll after film formation in Example 1 was maintained at 70 ° C for 100 hours, and the film was formed in the same manner as in Example 1. The evaluation results are shown in Table 1. As a film for a membrane switch, the deformation resistance is not satisfactory. Comparative Example 3 Except that the heat treatment after winding into a roll after film formation in Example 1 was maintained at 140 ° C for 24 hours, the film was formed in the same manner as in Example 1, and (please read the back first (Notes for filling in this page)

T pack. Binding paper size is applicable to China National Standard (CNS) A4 specification (210X297 mm) -28- ΑΛ4〇36 A7 __B7 _ ^ _ 5. Description of the invention (26) The membrane switch was obtained. The evaluation results are shown in Table 1. As a film for a membrane switch, the deformation resistance is not satisfactory. (Please read the precautions on the back before filling out this page) Printed by the Employees' Cooperatives of the Central Bureau of Standards, Ministry of Economic Affairs -29- This paper size applies to China National Standard (CNS) A4 specifications (2 丨 0 > < 297 mm ) V. Description of the invention (27) A7 B7 Example I printed by the Consumer Cooperative of the Central Bureau of Standards and Mobilization of the Ministry of Economic Affairs Example 6 Cu on Ch Q 1 inch ¥ πsuit age 0〇ί Ο οο 1 Tg + 115 1.510 Ο ο Ον 〇 … Inch cJ Example 5 z tu D-. 〇ON BPS-EO 〇i 4 m η cncn 〇〇ϊ ο οο co cn Tg + 115 1.515 Ο Ο • 〇 inch inch cn 〇 Example 4 z ω D- 〇i 1 1 1 Spherical silicon dioxide CO Ο Ο MD ΟΟ cn [Tg + 115 | Bu 1.498 ο inch inch VI 〇 Example 3 2 ω Oh oo 1 1 Secret 11 ^ Shu cn ο CS ο v〇oo fTl! Tg + 115 Bu 1.498 Ο Ο inch inch in ο Example 2 2 CL, o r- ~ 1 1 1 Spherical silicon dioxide CO Ο CN Ο VO OO cn to Tg + 115 | ι >-| 1.498 | Ο inch tr > Ο Example 1 wo 0 1 1 1 1 Spherical silicon dioxide cn ο CS ο Ό oo Tg + 115 1.4 1.498 Ο 〇 ^ inch \ 〇Ό U ^ i tn 〇 Main component polymer Molar ratio mol% Copolymerization component 1 Copolymerization component Molar ratio mol% Lubricant type Lubricant average particle size // m Lubricant addition amount Wt% Stretching ratio Longitudinal transverse heat fixing temperature ° C Thickness μm Refractive index in thickness direction (nz) ϋ ε β Di] 0J3 Λίΐ Bien mm 51 Intrinsic viscosity dl / g -------- load ------ order (please read the precautions on the back before filling this page)

This paper size applies the Chinese National Standard (CNS) A4 specification (210X297 mm) -30- ΑΑΑ〇3β Α7 Β7 V. Description of the invention (28) Printed by the Consumer Cooperatives of the Central Sample Bureau of the Ministry of Economic Affairs (1) Example 6 1.357 0.05 0.02 ο 1 1 CO 1 '^ o * —t in r 1 i 1— ^ 1 1 1 After the film mold roll is taken out ◎ ◎ ◎ Example 5 in cn I— (0.05 0.02 ο 〇 \ > A 1 4 CO p 1— * Ό > A l—l 1 4 After the film mold is rolled up ◎ ◎ ◎ Example 4 1.359 0.05 0.02 CN Ο ί Η ί lt i-H > ' Ή 1— (< — <} 丨 Electrode spacer setting 〇 ◎ 〇 ◎ Example 3 ON 1 1 S g 〇o CS | CNJ 1 异 '< inch · vn ON 1 1 film mold winding 〇 ◎ < 〇 Example 2 1.359 ssoo CN CS CM 1 t «-H 〇〇1 1 mmm was 鹚 〇 ◎ ○ ◎ Example 1 j 1.359 s § oo CN cs wn mtio 1 Ή 1 1 1 1 film After the mold is rolled up, the density is g / cm3, nephew φ wm Ιχ 籴 P per .m 〇 crease delamination and whitening rate% i glass transition temperature (Tg) ° c endothermic peak temperature ° c endothermic energy mJ / mg heat treatment time ° c heat treatment time hr Xu cold heat treatment start temperature ° c Xu cooling rate. C / hr Comprehensive evaluation of the operability evaluation of processable membrane switch during heat treatment period: ^ ----- 「A. 策- -{Please read the note on the back before filling this page) The size of the paper used in this edition applies to the Chinese National Standards (CNS) Α4 specification (2〗 0X29? Mm) Λ44 036 Α7 __Β7 V. Description of the invention (29) Ministry of Economic Affairs The Central Standards Bureau ’s work-consumer cooperation Du printed (il) I Comparative Example 3 PEN 〇1 '· k 1 Spherical silicon dioxide 〇CS Ο oo CO C * ~ i Tg + 115 bu 1.498 ο ο 々inch \ 〇0.55 Comparative Example 2 PEN 〇1 < t 1 Spherical silicon dioxide 〇 CN 〇 oo mc ^ i Tg + 115 1.498 〇 inch 0.55 Comparative Example 1 PEN 〇〇1 i ί 1 Spherical silicon dioxide cn 〇 CN 〇 \ 〇oo cn cf ~ i Tg + 115 1.498 〇 〇 Inch ν〇ν〇0.55 Main component polymer Main component Mole ratio mol% Copolymerization component Copolymerized component Mole ratio mol% Lubricant type Lubricant average particle size β m Lubricant added wt% Stretching ratio Longitudinal transverse heat fixing temperature ° c Thickness Ai m Thickness direction Emissivity (nz) ί-Ί re ε ε Β Β 'Si' Sq Low Emm mm Μ 51 Intrinsic viscosity dl / g -——------ load— (Please read the precautions on the back before filling this page) The paper size of the edition applies to the Chinese National Standard (CNS) A4 specification (210X297 mm) -32- 444036. V. Description of the invention (30) A7 B7 Printed by the Central Bureau of Standards of the Ministry of Economic Affairs (Consumer Cooperative) 1 3 1.359 SS 〇 r < i CNl 1 1 i 1 o · —H 1 1 mmm no 郫 〇 ◎ XX Comparative Example 2 rn 1 1 SS 〇 〇OJ «—Η 8 r H CN o ο 1 f 1 1 After take-up, ◎ XX Comparative Example 1 1.359 SS 〇 CN CNl 1 i 1 1 1 1 1 1 Untreated ○ XX Density g / cm3 Ίϋ φ is a silver X jump. .议 〇S Crease delamination and whitening rate% Glass transition temperature (Tg) ° c Endothermic peak temperature t: Endothermic energy mJ / mg Heat treatment time ° c Heat treatment time hr Xu cold heat treatment start temperature ° c Xu cooling rate ° C / hr Comprehensive Evaluation of Operational Evaluation of Processable Membrane Switch During Heat Treatment Γ — ^ ----- 「-K 策 — (Please read the precautions on the back before filling this page) The paper size of the paper is subject to the Chinese National Standard (CNS ) A4 specification (210X297 mm) -33- 4 44 0 3 6 Printed by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs A7 B7 __ V. Description of the invention (31) Example 7 Use of 2,6-naphthalenedicarboxylic acid dimethyl Ester 100 points, ethylene glycol 60 points, transesterification catalyst manganese acetate tetrahydrate salt 0.3 points, spherical silica particles with an average particle diameter of 0.3 were added to contain 0.2% by weight, After carrying out the transesterification reaction according to the usual method, 0.02 minutes of trimethyl phosphate was added to substantially complete the transesterification reaction. Next, 0.024 minutes of antimony trioxide was added, followed by high temperature and high vacuum in the usual method. Polymerization, resulting in a polymer with an inherent viscosity of 0.62d Ι / g 2,6-Ethylene dicarboxylic acid (PEN Tg = 12 2 ° C). This PEN containing silicon dioxide is melt-extruded using a die slit, and then cooled and solidified on a mold drum to produce Unstretched film. This unstretched film is stretched by 3.5 times in the longitudinal direction (major axis direction) and 3.7 times in the transverse direction (width direction). A biaxially oriented film with a thickness of 10 Owm is rolled into a roll. Thereafter, the heating section using the IR heater is transported, and the speed of the roll after the heating section is higher than that of the roll before the heating section. The speed is reduced by 2% for relaxation. The obtained biaxially oriented film is sampled into a single piece and heat treated at 170 ° C for 1 hour. On this PEN substrate film, silver paste is screen-printed to form a conductive circuit. 'Screen printing carbon paste is used to form a printing contact point (electrode) and dried at 100 ° C for 20 minutes.' After making a switch sheet, an adhesive for bonding two sheets of the sheet was used, and a film was used. Styrene-butadiene resin as the standard of this paper is applicable to China Standards (CNS) A4 (2 10X 297 public director) ----------- install— (please read the precautions on the back before filling out this page) Order-_ -34- Printed by the Staff Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs 444 03 6 A7 _B7____ V. Description of the invention (32) Membrane switch spacer. After the membrane switch is combined, heat-treat the switch for 2 4 hours in an oven maintained at 1 15 ° C. Physical properties and evaluation of biaxially oriented film, The evaluation results of the operability are shown in Table 2. Examples ft and 9 The film formation was performed in the same manner except that the heat treatment temperature or time of Example 7 after the switch combination was performed under the conditions shown in Table 2. The results are shown in Table 2. Example] 0 A film was formed in the same manner as in Example 7 except that the circuit and the electrodes were subjected to a heat treatment at a temperature lower than Tg before printing. The results are shown in Table 2. Example] 1 In Example 7, the circuit and electrodes were dried at 150 ° C for 5 minutes, and the state was maintained from the drying temperature to 115 ° C at a cooling rate of 15 ° C / hr. After the spin-cooling treatment was performed as a pre-heat treatment, a heat treatment was performed at 115 ° C for 2 to 4 hours, and the film was formed in the same manner. The results are not in Table 2. Example 1 2 and 1 3 Except that the film forming conditions were changed to those shown in Table 2 in Example 7, film formation was performed by the same method. The results are shown in Table 2. This paper size applies to Chinese National Standard (CNS) Α4 specification (210 × 297 mm) ϋ --------- ρ * Calling-(Please read the precautions on the back before filling this page) Order -35- Printed by the Central Standards Bureau of the Ministry of Economic Affairs, Shellfish Consumer Cooperative, 444 03 6 A7 __B7_ V. Description of the Invention (33) Example 1 4 Except for the heat fixation of the film in Example 7, the temperature is 15 ° C lower than the heat fixation temperature. The film was formed by the same method except that a relaxation treatment of 4% was performed in the horizontal direction at a temperature of 50 ° C. The film formation conditions and results are shown in Table 2. Example 1 5 Except that in Example 7, the die slit was used to melt and extrude a polynaphthalene dicarboxylic acid 2, 6-ethylene glycol having a natural viscosity of 0.5 4 d 1 / g containing silicon dioxide particles (PEN Tg = 120 ° C). Film forming conditions and results are not shown in Table 2. Example 16 A film was formed in the same manner as in Example 7 except that the heat-fixing temperature at the time of film formation was set to the conditions in Table 2 in Example 7. The film formation conditions and results are shown in Table 2. Example 1 7 Except that in Example 7, the spherical silica particles containing an average particle diameter of 1.5 containing lubricant was 0.3% by weight and had an inherent viscosity of 0.62 d I / g of polynaphthalene dicarboxylic acid containing silicon dioxide 2 ′ Except for 6-ethylene glycol (PEN Tg = 122 ° C), the rest were film-formed in the same way. The film formation conditions and results are shown in Table 2. Example 1 8 (Please read the notes on the back before filling in this page) The paper size is applicable to the Chinese national standard (CNS) A4 (2IOX297 mm) -36-^ A A4 03 6 A? ___ B7 Central Standard of the Ministry of Economic Affairs Printed by the Bureau of Shellfish Consumer Cooperatives V. Description of the invention (34) Use 8.9% of 2,6-naphthalenedicarboxylic acid dimethyl ester, 1 point of dimethyl terephthalate (abbreviated as TA), ethylene glycol 60 points and transesterification catalyst manganese acetate tetrahydrate salt 0.03 points, adding spherical lubricant particles with an average particle diameter of 0.3 · ^ η of lubricant to 0.2% by weight, performed in accordance with the gastric method After the transesterification reaction, 0.023 points of trimethyl phosphate was added to substantially complete the transesterification reaction. Next, 0.024 points of antimony trioxide was added, followed by polymerization at a high temperature and high vacuum to perform a polymerization reaction in a usual manner to obtain Polynaphthalene dicarboxylic acid 2,6-ethylene diester with inherent viscosity of 60 d I / g (TA copolymerization PEN T g = 1 1 3 ° C) = This copolymerized polyester will be used as the raw material through the slit of the die After being melt-extruded, it was allowed to cool and solidify on the mold drum to produce an unstretched film, followed by those shown in Table 2. The film conditions were sequentially biaxially stretched in the same manner as in Example 7 to obtain a biaxially oriented film. Using the obtained biaxially oriented thin film, a membrane switch was produced in the same manner as in Example 7, and the film switch was performed at 105 t. Heat treatment for 2 4 hours. The results are shown in Table 2. (Please read the precautions on the back before filling in this card.) Binding. Order. I. This paper size applies the Chinese National Standard (CNS) A4 specification (2i × 297mm)- 37- 444 036 A7 B7 V. Description of the invention (35 Example 12 printed by the Consumer Cooperative of the Central Standards Bureau, Ministry of Economic Affairs, PEN 〇 f— «1 1 Μ gives the age cn 〇ο ι〇vn Tg + 120 of—H c— co cn 0.53 1.361 Ο * —ί Example 11 PEN Ο »1 m η law m ο ο c ^ i cn Tg + 120 o ψ H inch i ™ i rs 0.53 1.360 ο Example 10 PEN." 〇 1 j 1 1 Peng η ^ Age CO ο OJ ο cn crt Tg + 120 o ψ 寸 inch—CO 0.53 1.360 ο 1-1 Example 9 PEN g 1— < 1 1 | Spherical silicon dioxide 1 silicon oxide | cn ο 04 Ο VO r ^ cn cn Tg + 120 o —CN \ ό 0.53 1.360 ο Example 8 PEN 〇 1 1 1 Spherical silicon dioxide m Ο CN Ο vn r- I Tg + 120 1 o For i-i CN 丨 0-53 1 1.360 ο Implementation 7 PEN § ~ I 1 Secret 1 1 age m Ο CN Ο mr * ^ mc ^) Tg + 120 oo Ψ — 1 Q- ^ 3 1 1 1.360 1 ο main component polymer main component mole ratio mol% copolymerization Component Copolymerization component Molar ratio mol% Lubricant type Lubricant average particle size ym 1 Lubricant addition amount wt% Stretching ratio Longitudinal transverse heat fixing temperature ° c Thickness " m Thickness dispersion% S s Spirit Viscosity dl / g Density g / cm3 Surface rough sugar (Ra) nm (Please read the precautions on the back before filling out this page) Binding. Order • Λ-This paper size applies Chinese National Standard (CNS) A4 specification (2 丨 OX29 ? Mm> 38- 444 036 A7 B7 V. Description of the invention (36) Example printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs 12 0.030 0.030 ο ο ο ο CS1 cn 03 1— «1 1 After the switch combination. 1 ◎ ◎ 〇 ◎ Example 11 〇 〇rsi cn 〇 〇〇〇0.040 0.040, CN CN 〇 «✓Ί ^ Ti ψ 'i 〇 r- * 1— < ^ Circuit electrode printing drying 〇in ◎ ◎ ◎ Example 10 〇 〇CO CO Ο Ο Ο Ο 0.050 0.050 CN CN 1- ^ tv〇rn T— ^ W " v inch rsj 1 1 electricity Road electrode printing Ί t „8 ◎ ◎ ○ ◎ Example 9 Ο Ο υη ^ ο ο ο 0.070 0.070 CN 1—I CNI IO 0 〇 2 ο ο 1 1 Switch combination 1_ 〇〇1 ^ ◎ ◎ ◎ ◎ Example 8 0.040 0.040 Ο Ο ν〇Ο Ο Ο ο CN CS omo ί i οο 1 1 After the switch combination 〇1 · — ◎ ◎ 〇 ◎ Example 7 〇 〇 mm Ο Ο Ο Ο ο ο ο ο ο d C < 1 CS tn CM i 1… ri inch CN 1 1 Switch combination ◎ ◎ ◎ ◎ Strain increase amount vertical% lateral% residual strain amount vertical% lateral% glass transition temperature (Tg) ° C endothermic peak temperature ° c endothermic energy m J / mg Heat treatment temperature r Heat treatment time hr Xu cold heat treatment start temperature ° c Xu cold speed ° C / hr Heat treatment period circuit, electrode drying temperature after printing (° c) Comprehensive evaluation of filming processability Membrane switch mobility evaluation ( Please read the precautions on the back before filling this page), and install it.-The size of the paper used in this edition applies to the Chinese National Standard (CNS) A4 (210X297 mm) -39 I ΛΑΑ036 A7 B7 V. Description of the Invention (37) Ministry of Economy Central Standards Bureau staff consumption (Peng) < > 1 Example 18 2; OO < 娜 ΝΜ ^ Μm 〇cst 〇 卜 〇 \ ΓΟ ΓΛ Tg + 120 o 2 v〇 \ 〇r 1 < tn 〇1.355 〇Example 17 2: W Oh ο ο ι 1 1 1 m 丨 1 蛰 ·· ι 03 ο r-cn cn 1 Tg + 120 1 〇o < '^ inch-CN' sD ^ cn tn o 1.361 〇 1 Example 16 2 m α. ◦ ο 1 1 m Π section Γ ^ Ί 〇 CS ο un r— < mm 1 Tg + 85 1 § 1 inch < cn cn m3 vd cn o 1.352 ot -H Example 15 Z PJ Cu ο ο 1 1 Na 1 丨 Drawing age cn CN ο UnJ CO 1 Tg + 120 o r1 (inch < N OJ v〇inch o 1.361 | o »H Example 14 2 ω Cl, ο 1 1 1 Spherical silicon dioxide m Ο CN Ο • -n r- cn CO Tg + 120 oot inch Η ι 1 \ 〇'O 1〇〇1.360 o 1-i Example 13 2 m CL, ο 1 1 1 1 Secret 丨 丨 Su m Ο CN 〇 pTg + 120 | oo υη un ^ sd v〇CO 〇 | 1.359 1 o T—H Main component polymer 1 Main component Molar ratio mol% Copolymerized component Copolymerized component Molar ratio mol% Lubricant type Lubricant average particle size # m Lubricant addition amount wt% Stretching ratio Longitudinal magnification Horizontal magnification Heat fixing temperature ° C Degree " m Thickness Dispersion% Intrinsic Viscosity dl / g Density g / cm3 Surface Roughness (Ra) nm '---------- Install-(Please read the precautions on the back before filling in this page)

T This paper size applies to China's National Standards (CNS) A4 specification (210X297 mm) -40- 444 0 3 6 A7 B7 V. Description of the invention (38 Printed by (w) cslm of the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs .18 _ 1 r-bu \ 〇〇 〇〇 〇0.085 0.085 CO CN ττ κη ο Τ-Μ 1 j! After switching combination 〇 ◎ < 1 〇 Example 17 〇 cncn 〇 〇 〇 〇 0.050 0.050 CN 04 i—H… 1- 1 inch CN 1 1 switch combination 〇〇1— < ◎ ◎ 〇 ◎ Example 16 Ο Ο \ 〇〇 Ο Ο Ο Ο Ο Ο ΟΟ Ο Ο Ο Ο ο α < N cn BU o After Vj 1 switch combination 〇 1 (◎ 〇〇〇 Example 15 Ο Ο cn m ο ο ο ο ΟΟ ΟΟ Shou inch 〇 〇 〇 ο o cn T-H in < -H 1 1 after switch combination ◎ ◎ 〇 ◎ Example 14 〇 mm 〇 ο ο ο Ο Ο Ο Ο ο OJ CSI m ψ A 1 < 1 " i 1 1 'After combination of switch 〇〇 * ~ 1 ◎ 〇〇 ◎ Example 13 _1 ο ο m cn Ο Ο Ο Ο ο ο ο ο ο ο CNt CM Ψ '! mor 1 1 t—1 1 1 1 After the switch combination is 〇〇 | 1 ◎ ◎ 〇 ◎ % Horizontal% Residual strain longitudinal% Horizontal glass transition temperature (Tg) ° c Endothermic peak temperature ° c Endothermic energy m J / mg Heat treatment temperature ° c Heat treatment time hr Xu cold heat treatment start temperature ° c Xu cooling rate ° C / hr Circuit during heat treatment, drying temperature after electrode printing (° c) 丨 Comprehensive evaluation of the mobility evaluation of film-making processability membrane switch ------------ ^ 11 衣 — (Please read the note on the back first Please fill in this page again for this matter) This paper size applies Chinese National Standard (CNS) Λ4 specification (210 X 297 mm) Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs 6 A? B7 r ---- " —--- -V. Description of the invention (39) Example 19 Using dimethyl 2,6-naphthalene dicarboxylate 100 minutes, ethylene glycol 60 minutes, transesterification catalyst manganese acetate tetrahydrate salt 0.03 Adding spherical silica particles with an average particle diameter of 0.3 to 0.25% by weight. After transesterification reaction according to a usual method, 0.023 minutes of trimethyl phosphate is added to substantially end the transesterification reaction. . Secondly, antimony trioxide was added at 0.02%, and then at high temperature, cavitation was carried out by a conventional method to obtain a natural viscosity of 0.62 d I / g T g PE.

Carboxylic acid 2,6-ethylene diester (PEN = 12 1 ° C). This N-containing silicon dioxide was melt-extruded using a die slit, and then cooled and solidified on a mold drum to produce a non-film. This unstretched film was sequentially stretched by 3.5 times in the longitudinal direction (machine long axis direction). Stretching in the transverse direction (width direction) is performed 3.6 times for biaxial stretching and heat fixing, to obtain a biaxially oriented film having a thickness of 7 5 μm, which is wound into a roll shape. Thereafter, for the purpose of increasing the stability of the film and increasing the effect of heat treatment at a temperature lower than T g, the heating section (18.5 ° C) using an IR heater was transported. At the same time, the speed of the reel after the heating section is decelerated by 3% compared to the speed of the reel before the heating section for relaxation. From the obtained biaxially oriented film, a sample with a width of 100 mm and a length of 2000 m was sampled and wound on a roll core with a diameter of 165 mm to form a sample roll. In this state, heat treatment was performed in a constant temperature bath of 115 t for 24 hours to obtain a membrane switch. On this PEN substrate film, screen printing silver paste is used to form conductive circuits. The paper size is applicable to China National Standard (CNS) A4 specification (210X297 feet) (please read the $ in the back and fill in this page) Binding · Order · -42- f 444 03 6 A7 B7 Printed by the Central Procurement Bureau of the Ministry of Economic Affairs and Consumer Cooperation Du printed 5. Description of the invention (40) 'The screen printing carbon paste is used to form the printing contact point (electrode). After drying at 110 ft for 20 minutes, an adhesive for laminating two sheets of the sheet was used and a film-shaped styrene-butadiene resin was used as a spacer for the membrane switch after making the sheet for the switch. Table 3 shows the physical properties and evaluation of the biaxially oriented film and the evaluation of the operability of the membrane switch. Example 2 0 to 2 3 Except that the film forming conditions were changed to those shown in Table 3 in Example 19, a film was formed in the same manner and heat-treated. The results are shown in Table 3. Example 2 4, 2 5 Except that the type and amount of the added lubricant were changed in Example 19, a film was formed by the same method and heat treatment was performed. The results are shown in Table 3. Example 2 6 In Example 19, the film-forming conditions were changed to those shown in Table 3. After heat fixing, at a temperature lower than the heat fixing temperature by 10 ° C, only 4% of the relaxation treatment was performed in the lateral direction. I made the film in the same way and heat-treated. The film formation conditions and results are shown in Table 3. Example 2 7 Except that the heat treatment time of Example 19 at 115 ° C was changed to 7 hours, a film was formed in the same manner. The results are shown in Table 3. (Please read the notes on the back before filling out this page) • i— n J—. Binding. The size of the paper used in the book is applicable to Chinese national standards (CNS> M specification (mm)) 43 444 036 A7 B7 V. Description of the invention ( 41) Example 2 8 Use 89 points of dimethyl 2,6-naphthalene dicarboxylate, 11 points of dimethyl isophthalate (isophthalic acid, IA for short), 60 points of ethylene glycol and transesterification catalyst 0.03 points of manganese acetate tetrahydrate salt. Spherical silica particles with an average particle diameter of 0.3 Am are added to contain 0.25% by weight. After transesterification reaction according to a conventional method, trimethyl phosphate is added. 0,023 points, so that the transesterification reaction is substantially completed. Second, 0.024 points of antimony trioxide is added, followed by polymerization at a high temperature and high vacuum in a common method to obtain a polynaphthalene with an inherent viscosity of 0.61d I / g. 2,6-Ethylene dicarboxylic acid (IA copolymerization PEN Tg = 115 ° C). The copolymerized polyester is used as a raw material to be melt-extruded by using a die slit, and then cooled and solidified on a mold drum. To make an unstretched film '. Secondly, the film forming conditions shown in Table 3 are the same as those in Example 19. Biaxially stretched in order to obtain a biaxially oriented film, and then subjected to relaxation treatment and heat treatment at 115 ° C in the same manner as in Example 19. The results are shown in Table 3. (Please read the note on the back first Please fill in this page again.) Binding · -Order--Printed on this paper by the Consumers' Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs, China National Standards (CNS) Α4 size (2 丨 0x297 mm) -44-444 0 3 6 A7 B7 V. Description of the invention (42) Example 23 printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs 2 2 ω CU ο ο 1 < i 1 1 i Η cs I secret j 1 lawsuit C ^ l 〇CM Ο cn ' Tf m cn Tg + 90 Bu 1.495 Example 22 2: ω cu ο rt 1 1 port i Η m η to Shum ο VT) CM ο vo Tg + 135 1.506 m Xi ts Ph U 0 ο ν—Η 1 1 i --Η CN Η m 11 ^ age cn Ο ν〇03 Ο inch VI Tg + 118 1.495 Example 20 ω Oh Ο 1 (1 τ A cN 1 Η m 11 ^ age 〇 W ") Οϊ d oo o cn cn | Tg +118 1 \ 〇1.510 Example 19 ″ 2 WJ CL, ο — < 1 1 I " · Η 1 —Η m 1 丨 丨 m ο CN 〇 < ri cn | Tg + 118 1 inch 1.498 main component polymerization Mole ratio mol % Copolymerization component i Copolymerization component Molar ratio mol% Glass transition temperature of polymer (° C) Lubricant type Lubricant Average particle size in m Lubricant addition weight% Stretching ratio Vertical times Horizontal times Heat fixing temperature ( ° c) Thickness # m Thickness dispersion% Refractive index in thickness direction (nz) (Please read the precautions on the back before filling out this page). -3 This paper size applies Chinese National Standard (CNS) Λ4 specification (2丨 0 × 297 mm) -45- ΔΑΑ〇3 ^ > A7 B7 V. Description of the invention (43 Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs (ilK skimming oooo girl 3 U CO oo O CN ^ -1 0.54 > 〇cn cs ο T-i '◎ 〇〇〇〇〇 匡 M3 0.02 0.01 捶 S 〇J cn CO 0 o 1 < ψ ii-Η, H 0.54 \ 〇cn T ^ in 〇 ^ C ^ l cn · ί—Η ◎ 〇〇〇〇〇 匡 〇s cn-ioo series 5 Μ vn Ό 0.54 in mri to ο ° 〇σ > CN · 〇〇〇〇〇〇 Example 20 〇〇cni m 〇o ^ ~~ (cn l 1 it L 0-54 1 1.361 OT ~~ * oo un 0.17 ^ CS C ^ l 一 — ◎ 〇 ◎ 〇 ◎ Real Example 19 CO inch r〇rn oo OO crs 〇 | 1.360 | vn iri d O oo τ— ^ ο ο a ro * i ~ 1 — ◎ 〇 ◎ 〇 ◎ Ά s ε U; the bearing size CN ε e Γ * 4 S cm brother Emm mm vertical% horizontal% {? Mm N sa ° 〇DC mi Dan Li tH Μ ΓΟ B store ε ΐ ^ γ ιτμΠ beer (埘 mi # ι «• Ν P P most XΓΓ δ: key temperature ITWfr O oo Turtle I m biliary 橼 TWl > TRIVn m booth Η 51 < Π 袒 stuffed painting filling 〇 m 魆 m 遁 (Please read the precautions on the back before filling out this page) Packing ·, -β This paper size applies China National Standard (CNS) Λ4 Specification (2 丨 0X297 mm) -46-444036 A7 B7 V. Invention Description (44 Printed (Art) by the Consumer Cooperatives of the Central Procurement Bureau of the Ministry of Economic Affairs Example 28 2 PJ CL. un CO < 1 i 1- ~ t 1 tm Shu 〇tTi CN Ο! Tg + 118 Ό 1.513 Example 27 2 m Cu oo Γ 1 ^ 1 1 1 4 cs 1 11 lawsuit 〇 in ΓΑ Ο νΊ Ό Tg + 118 JO 1.498 Example 26 2 ω o 1— (1 1 1 < CN Secret 1 丨 Interpretation M cn 〇 WO CN 〇 inch m Tg + 125 inch 1.501 Example 25. "a. O 1- 1 l 1 Oi 1-H porous sand dioxide CN m ο cn co Tg + 118 inch 1.498 Example 24 PEN oo 1 1 t H CN 1 * m η age > * 〇ι—1 inch · ο ι〇Ό mm 'Tg + 118 1.498 main component polymer main component mole ratio mol% copolymerized component copolymerized component mole ratio mol% polymer glass transition temperature rc) Type of lubricant Lubricant average particle size " m Lubricant addition weight% Stretching ratio Longitudinal magnification Lateral double thermal fixation temperature (° C) Thickness β m Thickness dispersion% Thickness refractive index (nz) (Please read the back (Please fill in this page again)

This paper size applies the Chinese National Standard (CNS) A4 specification (2! 0 × 29 "? mm) -47- AAA036 A7 B7 V. Description of the invention (45) Printed by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs (騵) ^ -1 Ο 1— ^ ο ο 〇 · ν C < i CN oom inch · —t-1 1 VO 〇 »4Π 1—Η 〇 \ 1— oo inch m · 1 ~ * 1-1 〇〇 ◎ < 3 〇 匡 ο 1 0.15 LA〇5 Girlfriend S-shirt m inch C ^ i cn oo 〇〇〇 \ in 〇ό cn 1— ^ τ Ή o inch 々OJ -O ◎ 〇 ◎ <] 〇s § 1 1 〇 to CN Ο Ο Ο m cn ίη Ο ν〇cn to f—1 o —oo O ◎ 〇〇〇〇 匡 〇 ι〇νη 〇〇 〇 m inch cn moo 〇〇〇 \ yr-i Ο ο m r- , ο W ") r · < Τ 'H o 〇— cn. r—t' ~ 1 ◎ 〇 ◎ 〇 ◎ · = ϊτ ο 0.15 0.05 CO inch co rn oo oo o \ ο ν〇cn o 〇 \ r —H o 〇, -HT—i ◎ 〇 ◎ 〇 ◎ r «i ε bb ε " Sh 'Sh er 叵 mm thin & H longitudinal% transverse% mm Φ B c D £; BB rs s toil 〇U o , m | N side «· | Β Ο cn m TTlllil beer (m 缌 m _ Μ i iP Ρ mc 〇oooo turtle m greed 沄 um tRTV% TWV > η-τί | W Η 酲 < Π crucible platinum MM mmm (please read the precautions on the back before filling this page)

This paper size is applicable to Chinese Standards (CNS) A4 (210X29? Mm) -48-444036 A7 ____B7_ V. Description of the invention (46) Example 2 9 Use 2,6-naphthalenedicarboxylic acid dimethyl ester 1〇 0 points, ethylene glycol 60 points, transesterification catalyst manganese acetate tetrahydrate salt 0.03 points, spherical silica particles having an average particle diameter of 0.3 // m are added to contain 0 2 5 weight %, After the transesterification reaction according to the usual method, trimethyl phosphate 0.03 is added for 3 minutes to substantially complete the transesterification reaction. Second, antimony trioxide is added for 0.024 minutes, and then at high temperature, high The polymerization was carried out in a vacuum by a common method to obtain a polycaeedioic acid 2,6-ethylene diester having an intrinsic viscosity of 0.62 d 1 / g (PEN Tg = 1 2 1 ° C). This PEN containing silicon dioxide was melt-extruded using a die slit, and then cooled and solidified on a mold drum to prepare an unstretched film. Yin Fan, an employee consumer cooperative of the Central Standards Bureau of the Ministry of Economic Affairs (please read the note on the back before filling in this page). This unstretched film is stretched in the longitudinal direction (machine long axis direction) by 3 · 4 times * transverse (width Direction) stretched 3 · 5 times for biaxial stretching and heat fixing to obtain a biaxially oriented film having a thickness of 7 5 / im, which was rolled into a roll shape. After that, the film was stabilized to increase the scale of the film. The purpose of the purpose and the effect of heat treatment at a temperature below T g is easy, so that the heating zone (18.5 ° C) using an IR heater is transported, and the reel speed after the heating zone is faster than the heating speed The roll speed in front of the section is decelerated by 0.2% for relaxation. From the obtained biaxially oriented film, a film with a width of 1,000 mm and a length of 2000 m is taken and wound on a core with a diameter of 16 mm. In this state, the sample roll is heated to 110 ° C for 24 hours, and maintained for 24 hours, and then heat-treated to room temperature for 24 hours. The paper dimensions are applicable to Chinese national standards ( CNS) A4 size (2! 0 × 297 male Chu) _ 49-444 036 Central Ministry of Economic Affairs A7 B7 printed by the Consumer Bureau of the Associate Bureau ___ V. Invention Description (47) On this PEN substrate film, screen printing silver paste is used to form conductive circuits, and screen printing carbon paste is used to form printed contact points (electrodes). After 20 minutes of drying at 1 10 t, after the switch sheet is produced, an adhesive for bonding two sheets of the sheet is used, and a styrene-butadiene resin is used as a spacer for the membrane switch. The physical properties and evaluation of the oriented film, and the evaluation results of the operability of the membrane switch are shown in Table 4. Example 3 0 to 3 3 In Example 2 9 except that the film forming conditions were changed to those shown in Table 4, the film was formed by the same method. The heat treatment was performed. The results are shown in Table 4. Example 3 4 89% of dimethyl 2,6-naphthalene dicarboxylate, 11% of dimethyl terephthalate (abbreviated as TA), and 60% of ethylene glycol were used. And a transesterification catalyst, manganese acetate tetrahydrate salt, 0.03 minutes, and spherical silica particles having an average particle diameter of 0.3 were added to make it contain 0.25% by weight, and the transesterification reaction was performed according to a common method. After that, trimethyl phosphate was added in an amount of 0.023 minutes to substantially complete the transesterification reaction. Then, 0.024 minutes of antimony trioxide was added, followed by polymerization at a high temperature and high vacuum in a conventional manner to obtain a polynaphthalene dicarboxylic acid 2, 6-ethylene glycol (TA) with an inherent viscosity of 0 6 1 d Ι / g. Copolymerization PEN T g-1 1 3 ° C) ° Use the die slit to melt extrude this copolymerized polyester as a raw material (锖 Please read the precautions on the back before filling this page) The paper scale is applicable to Shen Guo National Standard (CNS) Λ4 specification (210 × · 297 mm) -50- 444036 A7 B7_ V. Description of the invention (48) After cooling and solidification on the mold drum, an unstretched film is produced, followed by Table 4 The film formation conditions shown in the same manner as in Example 2 9 were sequentially biaxially stretched to obtain a biaxially oriented film. Similar to Example 2 9, the heating section of the IR heater was used to carry out a relaxation treatment at the same time. Example 29 was similarly heat-treated at 110 ° C. The results are shown in Table 4. j—1 ---- 1r ^! (Please read the notes on the back before filling in this page) *? τ The paper standard printed by the Shellfish Consumer Cooperative of the Ministry of Economic Affairs, China Standards (CNS) A # specifications (21 0 mm) -51-444 036 A7 B7 V. Description of the invention (49) Example of consumer cooperation cooperation between the Central Bureau of Standards of the Ministry of Economic Affairs and the Printing of Inch 34 Example ZW Oh oo <--Η cn 1 Η Spherical silica d to CN1 〇 Ό Tg + 115 JO Example 33 z; m Oh 〇1—j 1 r 4 Γνϊ i—l Spherical dioxide sand co ο ΓΜ 〇 inch. co m Tg + 130 inch Example 32 zm Pu oo 1 1 1 CN »—1 secret M ^ Shu m ο 05 〇 inch >« 〇ro Tg + 105 JO CO Example 3 1 z UA Oh 0 1 i 1 « 1 — CN 1 ") Π 给 cn ο wn CN Ο cn cn Tg + 115 inch Example I 30_i zw Oh o 0 1 < 1 1 1 ~ Ή CN t- ~ 1 Secret 1 1feed ageο νΊ CN Ο m 'i (Τ'! Inch l Tg + 115 | JO Inch Example ^ 29__i 2 ιύ On 0 1 (1 1 ii CN ϋί 1 1 ^ Shu 〇 un 〇 Inch α co γλ 1 Tg + 115 | Inch polymer Mole ratio of main component Mole ratio of copolymerization component Mole ratio of copolymerization component mol% Glass transition temperature of polymer rc) Lubricant type Lubricant average particle size # m Lubricant addition amount wt% Stretching ratio Longitudinal and horizontal reheating Fixed temperature (° c) Thickness dispersion from m thickness% J--Jmt-1 · n Λ --r 1 (Please read the precautions on the back before filling this page)

、 1T -J— This paper size is applicable to China National Standard (CNS) A4 specification (2U〗 X 297 mm) -52- Λ 44 Ο 3 θ Α7 Β7 V. Description of invention (50) Employees of the Central Standards Bureau of the Ministry of Economic Affairs Consumption cooperative prints (body) inch 〇〇υ〇〇'—H Ο ο λ r— (〇 1 inch 〇ϊ ο oo CN inch 1〇〇cn 1—Η 1 0.22 〇in m called 〇 ◎ <] 〇 oo CT \ cn — < Ο Ο Ο Ο data = W ο ο I 03 ο ο ν〇 卜 ι0.55 v〇m I Η 1 0.14 O CS | cn · 1 ~ 1 〇 ◎ 〇 ◎ m CN Ό 0.13 0.05 Select s Μ ο ο 1 CS Ο ο ο 〇cn t Η CN] 〇 〇 〇CO · ·-1 〇〇〇 ◎ Example 31 0.015 0.256 〇 〇 ο 〇 \ \ 〇 | 0.54 1 1 1.358 Η ο ο ο ΙΟ 0.18 〇m, 1 ~~ 1 〇 ◎ 〇 ◎ 1 i Os 0.05 0.01 U ο ο 1 MD Οϊ Ο ο ο θ 'inch 0.5 ^ Ό CO ψ i tn ψ ^ 〇 oooo · 〇〇〇 ◎ 〇 ◎ m ο in CO W ^ i — 'Ο Ο Ο Ο ο ο 1 tn CN 〇ο ΟΟ 〇 \ wn 〇in 1 * 1 (ci O 〇cn · J__ | F " H 〇 ◎ 〇 ◎ vq ε β ε s SC ή ε '' Si 'Sjj 馨 《" ε ◦ an * {? mm < R Gown C * J3 < & ΓΛ a Ο CO mm SI ε ifif gown κ m g N dan 俚 嫱 Ρ 邵 驾 温 #im DI3S πτ ^ m & & ο bile TKj \ -n TfvVv nM advise Si < n 晅 51 painting platinum C m η m (please read the precautions on the back first (Fill in this page)

Jla Λ— This paper size applies the Chinese National Standard (C'NS) Α4 specification (210X 297 mm) -53- Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs &gt; ΛΛ4 03 6 Α7 Β7 V. Description of the invention (51) Example 3 5 using 100 points of dimethyl 2,6-naphthalene dicarboxylate, 60 points of ethylene glycol and a transesterification catalyst manganese acetate tetrahydrate salt 0.03 points, the average particle diameter of the added lubricant 0. Spherical silica particles were made to contain 0.2% by weight, and after transesterification reaction was carried out in accordance with a usual method, trimethyl phosphate was added in an amount of 0.023 to complete the transesterification reaction substantially. Secondly, 0.024 minutes of antimony trioxide was added, followed by polymerization at a high temperature and high vacuum to carry out the polymerization in a conventional manner to obtain an inherent viscosity of ◦ 62d Ι / g of polynaphthalene dicarboxylic acid 2,6_ethylene diester (PEN Tg = 12 1 ° C). This PEN containing silicon dioxide was melt-extruded using a die slit, and then cooled and solidified on a mold drum to prepare an unstretched film. This unstretched film is stretched 3.3 times in the longitudinal direction (machine long axis direction) and 3.4 times in the transverse direction (width direction) from the front side and the back side of the film with the same amount of heat. Biaxial stretching was performed and heat-fixed to obtain a biaxially oriented film having a thickness of 7 5 Am, which was wound into a roll shape. Thereafter, the heating section using the IR heater is transported, and at the same time, the roll speed after the heating section is reduced by 0.2% compared to the roll speed before the heating section for relaxation treatment. The obtained film was heat-treated at 170 ° C in a single-piece state for 2 hours, and then heat-treated at 105 t for 16 hours. On this PEN substrate film, screen printing silver paste was used to form a conductive circuit, and screen printing carbon paste was used to form a printed contact point (electrode), and dried at 100 ° C for 20 minutes to produce a switch sheet. 'Adhesive for laminating two sheets of this sheet and using styrene-butadiene resin as the paper standard Applicable to Chinese National Standard <CNS Λ4 Specification (210 X297 mm) -54-Central Standard of the Ministry of Economic Affairs Printed by the Bureau's Consumer Cooperatives t 444036 A7 ______B7_ V. Description of the Invention (52) Spacer of membrane switch. The physical properties and evaluation of the biaxially oriented film and the evaluation results of the operability of the membrane switch are shown in Table 5. Example 36 In Example 3, except that the heat treatment time at 105 ° C was changed to 8 hours, the remaining method was used to form a film in the same manner, and the relaxation treatment was performed at 170 ° C. The results are shown in Table 5. Example 3 7 Except that the film forming conditions were changed to those shown in Table 5 in Example 35, the film was formed in the same manner, and the film was subjected to a relaxation treatment, followed by a heat treatment at 170 ° C and a heat treatment at 105 ° C. The results are shown in Table 5. Example 3 8 In Example 3 5 during the longitudinal stretching, the heating amount on the front side of the film was set to 1.6 times the heating amount on the back side and stretched. Other film forming conditions were changed to those shown in Table 5. Except the others, the remaining films were formed by the same method, and the relaxation treatment was performed at a heat treatment at 170 ° C and a heat treatment at 105 ° C. The results are shown in Table 5. Example 3 9 89 points of dimethyl 2,6-naphthalene dicarboxylate, 11 points of dimethyl terephthalate (abbreviated to TA), 60 points of ethylene glycol and transesterification catalyst J—- ----- &quot; 'τ ^ — (Read the notes on the back of the poem first and then fill out this page) The size of the paper used in this edition is in accordance with China National Standards (CNS) Α4 specification (210 × 297 mm) -55- Ministry of Economic Affairs Printed by the Consumer Standards Cooperative of the Central Bureau of Standards 444036 A7 ____B7 _V. Description of the Invention (53) Manganese acetate tetrahydrate salt 0.03 minutes, adding spherical lubricant particles with an average particle size of 0.3 #m to make it contain 〇, After 2% by weight, the transesterification reaction was carried out according to a usual method, and then trimethyl phosphate was added in an amount of 0.023 minutes to substantially complete the transesterification reaction. Secondly, 0.024 minutes of antimony trioxide was added, followed by polymerization at a high temperature and high vacuum in a usual manner to obtain a polynaphthalene dicarboxylic acid 2,6-ethylene glycol (TA) with an inherent viscosity of 0.6 Id Ι / g. Copolymerization PEN Tg = 113 ° C) »Melt extrusion of this copolymerized polyester as raw material using die slits to 'cool and solidify on the mold drum to make an unstretched film, followed by the table The film forming conditions shown in 5 were biaxially stretched in the same manner as in Example 3 and 7 to obtain a biaxially oriented film, and the relaxation in the heating section of the 1 R heater was carried out at the same time as in Example 3 and 7 to relax. After the treatment, the thin film was heat-treated at 170 ° C for 2 hours, and then at 16 ° C for 16 hours. The results are shown in Table 5. ^^^ 1 m · Ivf ^^^ 1 In ^^^ 1 ϋ (Please read the note on the back before filling in this page) This paper size is applicable to China National Standard Huai (CNS) A4 specification (2! 0X297) (56%) -56- 4 44 03 6 A7 B7 V. Description of the invention (54 Example printed by the Consumer Cooperatives of the Central Bureau of Standards, Ministry of Economic Affairs, Example 39 CL. CO &lt; H Ό «—Η cn i 球 Spherical silicon dioxide cn 〇〇oo m Tg + 105 JO Example 38 2 m CU 〇1 ^ 1 1 1-4 CN i 丨 丨 丨 Shu m ο r &lt; \ ο ri rn Tg + 105 JO inch Example 37 ″ z; ω Oh o 0 1 * 1 i 口 i Η na 丨 1 to Shu 〇 C ^ J ο oo 〇CN ro! Tg + 125 VO Example 36 2 w Pu o 1—ί J 1 ι CN F —H Secret I ^ Age m Ο CS] ο co c ^ i cn Tg + 105 | Example 35 2 w (X, 0 1 i \ 1 Ψ (rJ! 1 ^ age m Ο C &lt; l ο CO inch cn m | Tg + 105 j Main component polymer Main component Molar ratio mol% Copolymerized component 1 Copolymerized component Molar ratio mol% Glass transition temperature of polymer (° c) Lubricant type Lubricant average particle size 〆m Lubricant addition weight wt % Stretching ratio Longitudinal magnification Transverse thermal fixation temperature (° C) Thickness V m Thickness fraction Dispersion%] ----- NIY ·; Clothing ------ Order (Please read the precautions on the back before filling this page) This paper size applies to Chinese national standard 渫 CNS) 4 size (210X297 mm ) -57- r 444 036 A7 B7 V. Description of the invention (55 Printed by J Industry Consumer Cooperative of the Bureau of Intermediate Standards of the Ministry of Economic Affairs (rnK Except for Example 39 0.001-1 〇 〇 ο-ο ο ο Ο Ο wo L. 0.51 '' 1.352 Ό Γ〇— 〇 〇 〇 〇 0.20 〇 ◎ &lt; 1 〇 Example 38 0.005 cn 〇 ο m ο ο ο ο 630 640 L 0'54 '' 1 1.358 1 0.15 0.03 〇0.16 ^ 〇〇〇〇〇〇〇〇〇〇〇 0.001 0.035 0.035 oo 1 0.54 1 1.361 CO ― 〇 ο ο ο 〇0.14 ^ CO ^ 〇〇 ◎ 〇 ◎ Example 36 0.002 ___i inch ο ο ο ο oo O CN \ 〇Ό 1 0.54 1 1.358 * -Η ο ο ο ο ο ο ο ο ο ο ο 2; 0.16 1-H 〇 ◎ 〇 ◎ Example 35 0.002 0.035 0.035 o 〇o cs \ 〇 丨 0.54 1 1 1.358 1 »~ Η ο ο ο ο 〇1 0.16 1 Bu ^ 〇〇 ◎ 〇 ◎ plane orientation coefficient The absolute difference between the back of the table (ns table-ns back |) Strain increase amount longitudinal% lateral% 3 days B 6 '' Si &quot; &quot; Si Λί Λί mm M, solid Viscosity dl / g Density g / cm3 Thermal shrinkage% longitudinal (150 ° C χ30 minutes) Transverse% surface roughness (Ra) nm l-ι inch cvi ύ Β OJ3 gm d c c 滟 mi me ww w 龊 ri-ri x tR 1. Comprehensive evaluation of the operability of the processable membrane switch IJ ·· ———— ΙΛ / ^ 1 II--I 1 — r (Please read the precautions on the back before filling out this page) Dimensions of this paper Applicable to China National Standard (CNS) A4 specification (2 丨 OX 297 mm) 58

Claims (1)

444036 A8 Βδ C8 D8 Patent application No. 33 applies to the People's Republic of China {Please read the notes on the back before filling this page) 1. A biaxially oriented polyester film made of (A) containing ethylene-2,6-naphthalene dicarboxylic acid repeating units Made of at least 85 mol% polyester, (B) In the temperature range of 1 10 ~ 160 ° C, the endothermic energy has an endothermic peak of at least 0.4mJ / mg, and (C) the average surface of the center line is rough The thickness is 5 ~ 200 nm, (D) the thickness is 25 ~ 25mm, and (E) the Young's coefficient is 400 ~ 700kg / mm2, and the two orthogonal directions are stored in the membrane switch. Axial oriented polyester film. 2. The biaxially oriented polyester film according to item 1 of the patent application range, wherein the polyester (A) has an inherent viscosity of 0.40 to 0.990 d / g. 3. If the biaxially oriented polyester film of item 1 of the patent application scope, where the endothermic peak (B) is an endothermic energy with at least 0.5 mJ / mg, it is printed by the Bureau of Consumers Cooperative of the Ministry of Economic Affairs. The biaxially oriented polyester film 'item of patent scope 1 has a density of 1.345 ~ 1.370 g / cm3. 5 _ If the biaxially oriented polyester film of item 1 of the scope of patent application, it is a strain increase rate of 0.75 kg / mm2 after 30 hours' 0 0 0 0% and shift Residual strain after deloading is below 0,090%. Orthogonal two directions exist on the film surface. The paper size is applicable to China National Standard (CNS) A4 specification (2 丨 〇2 2) ΔΑ4 036 Α8 BS C8 D8 6. Within the scope of patent application. ------------ (Please read the precautions before filling out this page) 6. If the biaxially oriented polyester film of item 5 of the scope of patent application 'the increase rate of strain is 0. 〇6 5% or less. 7. If the biaxially oriented polyester film according to item 5 of the scope of the patent application is used, the residual strain amount is not more than 0.85%. 8. The biaxially oriented polyester film 'according to item 1 of the patent application range, wherein the 1% strain strength is 4.5 to 7.0 kg / mm2, and the orthogonal two directions exist in the film surface. 9 · The biaxially oriented polyester film according to item 8 of the scope of patent application, wherein the 1% strain strength is 4.7 to 6.8 kg / mm2. 10. The biaxially oriented polyester film according to item 1 in the scope of patent application, wherein the refractive index in the thickness direction is 1.490 ~ 1.55 30 ^ 1 1. The biaxially oriented polymer according to item 10 in the scope of patent application The vinegar film 'wherein the refractive index in the thickness direction is 1.495 to 1.520. T 1 2 is a biaxially oriented poly (vinyl acetate) film such as item i in the scope of the patent application, wherein the water vapor transmission rate is from 0.02 to 0.35 g / m2.mm 2 4 h r. Printed by the Consumers 'Cooperative of the 4th Bureau of the Ministry of Economic Affairs 13 · If the biaxially oriented polyester film of the first scope of the patent application, the heat shrinkage rate of heat treatment at 150 ° C for 30 minutes is less than 0.02%' The two orthogonal directions exist in the plane of the film. 1 4 If the biaxially oriented polyester film of item i in the scope of the patent application, where the surface orientation coefficient is 0.242 ~ 0.270 «1 5. If the biaxially oriented polyester film in the scope of the patent application item 1 is the thickness dispersion It is 10% or less. The paper size is suitable for financial group (21 «x 加 公 *) 2 --- ~~~~ ---_ 444 036 Printed by the Ministry of Economic Affairs and the Smart Consumer Welfare Bureau A8 B8 C8 D8 Patent scope 16. — A method for manufacturing a biaxially oriented polyester film as described in the first patent application scope, which is a polyester pulling unit containing at least 85 mole% of ethylene-2,6-naphthalene dicarboxylate repeating unit Stretch the film at a temperature of Tg ~ (Tg + 60) ° C, longitudinally and transversely at a magnification of 2.0 to 5.0 times, and then biaxially stretch it at (Tg + 70) t ~ (Tg + 140) ° CI The biaxial polyester film produced by the method of thermal fixing for 1 to 100 seconds is characterized by the following steps: (1) Unstretched at a temperature between 150 and 180 ° C 1 to 5 hours of heat treatment steps, and (2) 5 to 2000 hours of heat treatment at a temperature between 80 to 1 2 2 ° C in a single sheet or rolled state. , Manufactured in this order. 17. The biaxially oriented polyester film according to item 1 of the scope of patent application, wherein a membrane switch can be manufactured. 18. If the biaxially oriented polyester film of item 1 of the patent application scope is embedded in the seat of a car, it can detect the weight of the human body and identify adults and children to an airbag that can adjust the action of the car when it is impacted Expansion rate. 19. The biaxially oriented polyester film according to item 1 of the scope of patent application, which can be used as a membrane switch. 20 · The biaxially oriented polyester film of item 18 in the scope of patent application is used as a membrane switch. 2 1. — Seed membrane switch, which can detect the weight of humans and discriminate between adults and children, and then adjust the size of the safe paper that starts to act when the car encounters an impact. Applicable to Chinese national standards (CNS &gt; A4 specifications {210X297 Mm) -3-(Please read the notes on the back before filling this page) 444 036 VI. The scope of the patent application for the expansion speed of the full airbag is made of a biaxially oriented polyester film installed under the seat of a car. The biaxially oriented polyester film is composed of (A) containing ethylene ~ 2,6_naphthalene Carboxylic acid ester repeating unit of at least 85 mol% of polyester, (B) in the temperature range of 1 10 ~ 160 ° C, the endothermic energy has an endothermic peak of at least 0.4mJ / mg, (C) the average of the centerline Surface roughness is 5 ~ 200 nm, (D) thickness is 25 ~ 250 # m, and (E) Young's coefficient is 400 ~ 700kg / mm2, and the two directions of 疋 $ are stored in the membrane switch Use biaxially oriented polyester film. -------- 敦 ----- 1 Order ------ γΛ (Please read the notes on the back if you want to fill out this page. J Ministry of Economic Affairs Wisdom. 4 Bureau: a Industrial Consumer Cooperative Printing quasi-standard home country and middle school use of i-size S-sheets-paper | Original Section 871: Chinese Speaking 9333 Sincere_Professional Application_Revision of this Application Date — | -—- Year 11 PB Case No. 8711933S Each of the above categories The column is filled by this bureau.) Amendment_ 补 无 本月 #January 89, A4, C4, 444,036% Patent Specification Invention Name Chinese Film Enlightened Double M Oriented Polyacid Film English Name BIAXIALLY ORIENTED POLYESTER FILM FOR A MEMBRAN]; SWITICH ⑴ 古谷 幸 治 (2) Watanabe Shinji (3 Kawasaki Shinichi, Japan 0 Japan 0 (3 Japanese costumes to invent and live in) (1) Japan, Kanagawa, Asagami, Yamagata, Sanchime, Sanchiban, 19, and Teijin Co., Ltd. Inside the Chess Research Center (2Inside Kanayama Sanchome, Sankome Sanchiban, No. 19, Sagamihara, IU, Kanagawa Prefecture, Japan) (3) Inside the Saikagi Research Center, Teijin Co., Ltd. Teijin Shares Co., Ltd. The name k (name) of Si Xiangqi's original research center μ · &quot; · 3γ ^ η ·· '! ,, θi; printed by i Gongxiao Bone Cooperative 3. The applicant's national residence and residence (office) Name of Representative (1) Teijin Co., Ltd. Teijin Co., Ltd. (1) No. 1-Chome, Minamimotocho, Central Plaque, Osaka City, Osaka Prefecture, Japan (1) Anju Xiangce Line This paper standard is applicable to Chinese national standards (CNS) A4 * t (210X297 mm) 444 036 Application date: November 21, 1987 Case No. 87119333 Category (The above sheds are filled with columns by this bureau) Instruction Manual Chinese Invention Name English Name Nationality w) Suzuki Kenji, Japanese costumer, Japan, Kanagawa, Japan ） Line &quot; ^ 部 &quot;, 1: ^ 4:? :: :( Gong; / 1 bone cooperative prints the applicant's nationality residence, residence (office)) Name of the representative This paper size applies to the Chinese national standard (CNS ) A4 size (210X297mm) 444 036 Α7 B7 Revision 5. Description of invention (2) Deformation resistance under high temperature is gradually required as the base film of membrane switch (Please read the precautions on the back before filling in this Page) When the PET film is used as the base film, the temperature inside the car in summer (about 80 ° C) exceeds the glass transition temperature of PET, and the amount of deformation becomes large, so that the switch may malfunction. This improvement strategy is to replace the substrate film with polyethylene naphthalene dicarboxylate (glass nat (Referred to as "PEN") film was applied for in Japanese Patent Publication No. 4-75601. That is, in Japanese Patent Publication No. 4-7561, it is disclosed that the The film switch at the contact point on the opposite sides of the two base films, as for a base film with a density of 1,375 g / cm3 or less, and a thermal shrinkage of 1.0% when heated at 120 ° C for 30 minutes The following membrane switch of biaxially oriented polyethylene naphthalate film. In addition, Japanese Patent Publication No. 6-4 2 7 6 discloses a heat treatment at 150 ° C for 2 hours. The increase rate of haze defined by the following formula: The increase rate of haze printed by the Shellfish Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs = Hl: H, X 100 (%) (In the formula, H i is the haze before heat treatment値, Η 2 is a haze after heat treatment 値) is made of polyethylene naphthalate at 20% or less and the heat shrinkage at that time is 0.5% or less in the width direction Polyester film for membrane switch. This paper size is applicable to China National Standard (CNS) A4 (210 X 297 mm) -5- Employees of the Ministry of Economics and Intellectual Property of the Ministry of Economic Affairs and Economic Cooperation printed the ester repeatedly to resist deformation, thermal resistance of the carboxylic acid ester, membrane switch for instinctual use of the film, biaxially fixed polyester, thin film with excellent workability, and high temperature resistance. 444036 caused by machinery V. Description of the invention (3) &gt;… ~ However, the impact of the recent implementation of the PL liability (product liability law) is a partial re-examination of the standard for strain resistance, even if the PET film is also pointed out There are some cases of insufficient resistance to strain. In addition, in the case of using a membrane switch as a pressure sensor, especially in a car equipped with an airbag, in the case of adults and children, the weight sensing method of the sensing method used to change the inflation speed of the airbag, the membrane switch is embedded When buried in a seat and used as a pressure sensor, the conventional PET film has a large residual strain rate and is not resistant to use. Disclosure of the Invention The object of the present invention is to provide a biaxially oriented polyester film for a membrane switch made of a polyester containing ethylene-2,6-naphthalenedicarboxylic acid as a main repeating unit and used at a high temperature. Other objects of the present invention are to provide a polyester film containing ethylene-1,2-Cai-II as a main repeating unit, and have high-temperature switching performance, dimensional stability, buckling resistance, and the addition of a biaxially oriented polyester film. Still another object of the present invention is to provide a biaxially oriented polyester film for use in machinery or portable switches, such as in a heated car, around a heating container, and the like. Still another object of the invention is to provide a method for producing the polyester film of the present invention as described above. Yet another object of the invention is to provide a membrane switch using the biaxially oriented membrane of the present invention. This paper size applies to China National Standard (CNS) A4 specifications (210 X 297). 1 — 丨 — — — — — — — A · 1111111 a — — — — — — — — k (Please read the item on the back first (Fill in this page again) -6- Λ44〇3 ^ Amendment ,, Supplement 1 2 Biaxially Oriented Polyester Film for Membrane Switch 4. Abstract of Chinese Invention It is made of 85% polyester and has biaxially-oriented polyester moire for membrane switches with an endothermic energy of up to .4mJ / mg in the temperature range of 110 to 160 ° C. Read the notes on the back side and fill in each page on this page) Less 0 film. This film is a biaxially stretched polyester film made from the above polyester by its own well-known method. In the following steps: (1) unstretched Under 1 50 ~ 1 8 〇 ΐ: the step of heat treatment for 1 ~ 5 hours at a temperature between (2) in a single sheet state or in a rolled state 'between 8 ◦ ~ 1 2 2 ° C The step of heat-treating at a temperature of 5 to 200 hours is performed in this order. Name: BIAXIALLY ORIENTED POLYESTER FILM FOR A MEMBRANE SWITICH Abia ^ clally 〇r ien ted polyester f ilm for ajnembr anas witch, which is made from a'polyester containing at least 2ί mol% of ethylene-2 ^ 6-naphthalena dicarboxylate recurring units and which has an endothermic peaJc with an endothermic energy printed at at 0.4 mJ / mg at a temperature of 110 to 160 * C. This film is produced by subjecting a biaxialLy orlentad polyester film produced from the above polyester In accordance with a method known per se to the following steps in the order named: 11) the step of heating the film under no strain at a temperature of 150 to 180 ° C for l to 5 hours; and (2) the step of heating the film In an unrolled or rolled state at a temperature of 80 to 122 * C for: 5 to 200 hours. This paper size applies to China National Standards (CNS) A4 specifications (210X297) * -2- 444036 A8 Βδ C8 D8 Patent application No. 33 applies to the People's Republic of China {Please read the notes on the back before filling this page) 1. A biaxially oriented polyester film made of (A) containing ethylene-2,6-naphthalene dicarboxylic acid repeating units Made of at least 85 mol% polyester, (B) In the temperature range of 1 10 ~ 160 ° C, the endothermic energy has an endothermic peak of at least 0.4mJ / mg, and (C) the average surface of the center line is rough The thickness is 5 ~ 200 nm, (D) the thickness is 25 ~ 25mm, and (E) the Young's coefficient is 400 ~ 700kg / mm2, and the two orthogonal directions are stored in the membrane switch. Axial oriented polyester film. 2. The biaxially oriented polyester film according to item 1 of the patent application range, wherein the polyester (A) has an inherent viscosity of 0.40 to 0.990 d / g. 3. If the biaxially oriented polyester film of item 1 of the patent application scope, where the endothermic peak (B) is an endothermic energy with at least 0.5 mJ / mg, it is printed by the Bureau of Consumers Cooperative of the Ministry of Economic Affairs. The biaxially oriented polyester film 'item of patent scope 1 has a density of 1.345 ~ 1.370 g / cm3. 5 _ If the biaxially oriented polyester film of item 1 of the scope of patent application, it is a strain increase rate of 0.75 kg / mm2 after 30 hours' 0 0 0 0% and shift Residual strain after de-loading is below 0,090%. The orthogonal two-direction system exists on the film surface. The paper size is applicable to the Chinese National Standard (CNS) A4 specification (2 丨 〇2).