JP6516098B2 - Content filling method and apparatus - Google Patents

Description

  The present invention relates to a content filling method and apparatus for forming an aseptic container such as a bottle and filling and sealing the aseptically processed content.

  An in-line system has been proposed in which a blow molding machine is placed on a production line for contents such as beverages to produce PET (polyethylene terephthalate) bottles in-line, and then the contents are aseptically filled into the bottles (for example, patent documents 1)).

  More specifically, the preform was heated in an oven while conveying the preform, and the heated preform was formed into a PET bottle by a blow molding die, and this bottle was placed in a fixed position while being conveyed From the nozzle, the hydrogen peroxide mist is sprayed toward the mouth of the bottle, and while the air nozzle is made to follow the bottle, hot air is blown into the bottle to perform air rinse, hot water is injected into the bottle to perform warm water rinse, and then The contents are filled in the sterilized bottle and sealed.

JP, 2006-111295, A

The conventional content filling method or apparatus described above performs the heating of the preform by the oven, the blow molding for forming the heated preform into a bottle, and the filling of the content into the formed bottle with the preform and the bottle As shown in FIG. 3, during production of the bottle, the current value for energizing the oven is such that the surface temperature of the preform becomes a predetermined forming temperature Ta suitable for blow molding, as shown in FIG. It is controlled. As a result, the temperature of the oven changes around the production temperature T ₃ , and the preform is heated to the forming temperature Ta, which is a temperature suitable for blow molding. Then, when the supply of the preform is insufficient, or when an abnormality occurs in the process of subsequent filling of the contents, the current value is controlled such operating temperature of the oven drops to standby temperature T _2.

Therefore, the abnormality is eliminated, if that attempts to resume the molding of the bottle, the operating temperature of the oven (referred to as "standby time") intermediate temperature until the rise to T ₁ from the standby temperature T _2, the bottle I have to wait for molding.

The intermediate temperature T ₁ is higher than the standby temperature T ₂ and lower than the production temperature T ₃ , and the inside of the oven is emptied by the occurrence of the above abnormality, and after the above abnormality is eliminated, the inside of the empty oven is When the preform is newly introduced and the preform is heated, the temperature is such that the preform can be heated to the molding temperature Ta when it leaves the oven.

  In FIG. 3, the alternate long and two short dashes line indicates a change in the heating temperature of the preform, and since Tb during occurrence of abnormality is empty in the oven, the preform is transported in the oven instead of the temperature of the preform. Indicates the temperature of the mandrel.

Filling device such as a recent beverages, for example, so to fill the beverage or the like to the bottle to flow at high speed of 900BPM (bottles / min), until the operating temperature of the oven is raised from the standby temperature T ₂ to an intermediate temperature T ₁ of The need for a large amount of waiting time means that the productivity of the bottle is extremely reduced in the method or apparatus for filling contents without a buffer of the bottle from the formation of the bottle to the filling of the beverage and the like.

  Therefore, an object of the present invention is to solve the above problems.

  In order to solve the above-mentioned subject, the present invention adopts the following composition.

  Although reference symbols are attached in parentheses to facilitate understanding of the present invention, the present invention is not limited thereto.

That is, the invention according to claim 1 includes heating of the preform (1) by the oven (10), blow molding for forming the heated preform (1) into the container (2), and a formed container (2 And the filling of the contents into) on the transport path of the preform (1) and the container (2), and during the production of the container (2), the operating temperature of the oven (10) is the production temperature (T ₃ ) The preform (1) is heated to the molding temperature while raising it to the molding temperature, and when an abnormality occurs in the steps after the filling of the contents, the operating temperature of the oven (10) to the standby temperature (T ₂ ) In the content filling method to be lowered, when the abnormality occurs, an intermediate temperature (T) at which the operating temperature of the oven (10) is higher than the standby temperature (T ₂ ) and lower than the production temperature (T ₃ ) ₁₎ to thereby decrease the intermediate temperature (T ₁₎ was maintained for a predetermined time period (X), when the abnormality has been eliminated within the predetermined time (X), the production temperature operating temperature of the oven (10) from the intermediate temperature (T ₁₎ (T ₃₎ until raised, the predetermined time when the abnormality is not resolved in the (X), the operating temperature of the oven (10) intermediate temperature (T ₁₎ from said standby temperature (T ₂₎ Adopt the content filling method to lower to the top.

The content filling method according to claim 1, wherein the temperature detected by the temperature sensor (17) in the oven (10) is an intermediate temperature (T ₁ ). It is also possible to control the operating temperature of (10).

As described in claim 3, in the content filling method according to claim 1, it is also possible to control the intermediate temperature (T ₁ ) by keeping the current value supplied to the oven (10) constant. It is.

  As described in claim 4, in the content filling method according to any one of claims 1 to 3, the introduction of the preform (1) into the oven (10) when an abnormality occurs. It is also possible to shut off and discharge the blow-molded container (2) out of the transport path before filling the contents.

The invention according to claim 5 comprises an oven (10) for heating a preform (1), a blow mold (6) for forming the heated preform (1) into a container (2), and a molded container Preform (1) and container (2) from filling machine (4) for filling contents to (2), and from the oven (10) to the filling machine (4) through the blow mold (6) And, during the production of the container (2), the preform (1) is heated to the forming temperature while raising the operating temperature of the oven (10) to the production temperature (T ₃ ), In the content-filling device for lowering the operating temperature of the oven (10) to a predetermined standby temperature (T ₂ ) when an abnormality occurs in the process after filling of the object, the oven when the abnormality occurs The operating temperature of (10) ₂₎ higher than the production temperature (T ₃₎ lower than the intermediate temperature (T ₁₎ until lowering to the intermediate temperature (T ₁₎ for a predetermined time (X) maintained within the predetermined time (X) When the abnormality is eliminated, the operating temperature of the oven (10) is raised from the intermediate temperature (T ₁ ) to the production temperature (T ₃ ), and the abnormality is eliminated within the predetermined time (X) If no, employing a content filling device for lowering the operating temperature of the oven (10) from the intermediate temperature (T ₁₎ to the standby temperature (T _2).

The content filling device according to claim 5, wherein the temperature sensed by the temperature sensor (17) in the oven (10) is an intermediate temperature (T ₁ ). It is also possible to control the operating temperature of (10).

As described in claim 7, in the content filling device according to claim 5, it is also possible to control the intermediate temperature (T ₁ ) by a constant current value supplied to the oven (10).

  As described in claim 8, in the content filling apparatus according to any one of claims 5 to 7, the introduction of the preform (1) into the oven (10) when an abnormality occurs. A stopper (16) for blocking can be provided, and a discharge means (15) can be provided for discharging the blow-molded container (2) out of the conveyance path before filling the contents.

According to the invention, the heating of the preform (1) by the oven (10), the blow molding of the heated preform (1) into a container (2) and the contents of the formed container (2) Material filling is continuously performed on the transport path of the preform (1) and the container (2), and during the production of the container (2), the operating temperature of the oven (10) is raised to the production temperature (T ₃ ) Contents while heating the preform (1) to the molding temperature and lowering the operating temperature of the oven (10) to the standby temperature (T ₂ ) when an abnormality occurs in the steps after the filling of the contents In the filling method, when the abnormality occurs, the operating temperature of the oven (10) is lowered to an intermediate temperature (T ₁ ) higher than the standby temperature (T ₂ ) and lower than the production temperature (T ₃ ) given the intermediate temperature (T ₁₎ by And between (X) maintaining, when the abnormality has been eliminated within the predetermined time (X), elevated operating temperature of the oven (10) to the production temperature (T ₃₎ from the intermediate temperature (T ₁₎ Operating temperature of the oven (10) is lowered from the intermediate temperature (T ₁ ) to the standby temperature (T ₂ ) when the abnormality is not resolved within the predetermined time (X). Then, the production of the bottle (2) is interrupted due to the occurrence of an abnormality during the production of the bottle (2) or the bottle-packed product, and after the temperature of the oven (10) is lowered to the intermediate temperature (T ₁ ) Even when production of the bottle (2) or the bottled product is resumed, it is possible to immediately supply the preform into the oven without providing the conventional waiting time until the preform is sent into the oven. Increased to oven quickly produce temperature the temperature of (10) (T _3), can be heated quickly preform (1) to the forming temperature (Ta). Therefore, the productivity of the bottle (2) to the bottled product can be further enhanced. Also, if the abnormality is not resolved within the predetermined time (X), the operating temperature of the oven (10) is lowered from the intermediate temperature (T ₁ ) to the standby temperature (T ₂ ), so that the abnormality is eliminated. The energy loss etc. when taking time and effort are avoided.

It is a schematic plan view showing the contents filling device concerning the present invention. It is an operating temperature diagram of the oven in a content filling apparatus. It is the operating temperature diagram of the oven in the conventional content filling apparatus.

  Hereinafter, an embodiment of the present invention will be described.

  As shown in FIG. 1, the content filling apparatus comprises a preform feeder 49 for sequentially feeding preforms 1 at predetermined intervals, a blow molding machine 3 for forming the preform 1 into a bottle 2 which is a container, and The filled bottle 2 is filled with contents such as a beverage and the like, and the filling machine 4 is provided.

  A portion from the middle of the preform feeder 49 to the filling machine 4 is covered with chambers 5a and 5b which are protective covers. The insides of the chambers 5a and 5b are maintained at a positive pressure by always supplying sterile air from a sterile air supply source (not shown).

  The preform 1 is a test tubular bottomed cylindrical body, and is made of, for example, PET (polyethylene terephthalate) by injection molding or the like. The preform 1 is finished into a bottle 2 which is a container by blow molding, but the same mouth and external screw (not shown) as in this bottle 2 are applied to the preform 1 from the beginning of forming the preform 1 Be done.

  Between the preform feeder 49, the blow molding machine 3, and the filling machine 4, the preform conveying means for conveying the preform 1 on the first conveyance path and the cavity of the finished product shape of the bottle 2 are provided. A conveying means for forming a mold for conveying the forming die 6 on the second conveying path connected to the first conveying path; and a bottle 2 formed by the forming die 6 connected to the second conveying path Container conveying means for conveying on three conveyance paths are provided.

  The first transport path having the preform transport means, the second transport path having the mold transport means, and the third transport path having the container transport means communicate with each other, and these transport paths The grippers are provided with grippers (not shown) for holding and transporting the preform 1 and the bottle 2 and transferring the preform 1 and the bottle 2 between the transport paths.

  The preform conveying means in the preform feeder 49 comprises a shooter 7 sequentially feeding the preform 1 at a predetermined interval, a wheel 8 receiving and conveying the preform 1 from the end of the shooter 7, and a preform from the wheel 8 And an endless chain 9 extending in the horizontal direction to receive and travel.

  In the shooter 7, some abnormality occurred in the steps after filling with the beverage such as the preform feeder 49, the filler 46, the capper 48, the labeler, the caser and the palletizer described later, and the operation of the filler 46 was stopped or slowed down. In this case, a stopper 16 is provided to stop the supply of the preform 1 into the oven 10 described later. When the above abnormality is detected, the stopper 16 intrudes into the shooter 7, thereby blocking the introduction of the preform 1 into the oven 10.

  The endless chain 9 is bridged between a pair of pulleys 9a and 9b disposed opposite to each other on a horizontal surface, and the shooter 7 is connected to one of the pulleys 9a.

  A number of holding members (not shown) holding the preform 1 are attached to the endless chain 9 at a constant pitch. Each holding member is capable of rotating while traveling as the endless chain 9 travels. The holding member is formed as a vertically long mandrel or spindle, and a plurality of ball-like elastic bodies (not shown) are embedded in the outer peripheral surface of the lower part thereof. When the holding member is inserted into the opening of the preform 1, the elastic deformation of these elastic bodies causes the preform 1 to be held by the holding member.

  A holding member is inserted into the mouth of the preform 1 sent from the wheel 8 side to the endless chain 9 side, whereby the preform 1 is held upright by the holding member.

  The endless chain 9 is surrounded by an oven 10 integral with the chamber 5a, and a heater 11 for emitting infrared rays is stretched around the inner wall of the oven 10.

  The preform 1 is received by the holding member attached to the endless chain 9 through the shooter 7 and can be blow-molded by the heater 11 in the oven 10 while moving along with the traveling of the endless chain 9 in one direction. It is heated to the molding temperature. The preform 1 is desirably uniformly heated while rotating with the rotation of the holding member, and is heated to a temperature of 90 ° C. to 130 ° C. which is a molding temperature suitable for blow molding except for the mouth. The mouth part is suppressed to a temperature of 70 ° C. or less which does not cause deformation or the like so that the sealing property when the cap (not shown) is covered after the preform 1 is formed into the bottle 2 is not impaired. Be

  In one pulley 9a of the endless chain 9, at a position in contact with the return path of the endless chain 9, a wheel 12 which receives the preform 1 heated to the molding temperature by the heater 11 and passes it to the mold 6 on the second conveyance path is in contact .

  The blow molding machine 3 is provided with a conveying means for forming dies on the second conveyance path, and the conveyance means for forming dies includes a wheel 13 connected to the wheel 12 on the second conveyance path.

  Around the wheel 13, a plurality of sets of forming dies 6 which are split dies for receiving the preform 1 heated to the forming temperature by the heater 11 and blow forming the preforms into bottles 2 are arranged at predetermined intervals. The mold 6 can pivot at a constant speed around the wheel 13 as the wheel 13 rotates.

During production the bottle 2 by the blow molding machine 3, the operating temperature in the oven 10 to be heated by the heater 11, as shown in FIG. 2, is controlled to increase to production temperature T _3.

Although production temperature T ₃ is different depending on the kind of the preform, for example if the molding temperature is to be 110 ° C., a 105 ° C. close to this temperature.

By controlling the operating temperature in the oven 10 to increase to the production temperature T ₃ , the preform 1 is heated to the above-mentioned forming temperature when passing through the oven 10. Relationship between the molding temperature and productivity temperature T ₃ is determined experimentally in advance.

  The temperature at which the preform 1 passes through the oven 10 is detected by the temperature sensor 18. The temperature sensor 18 is provided, for example, at a place where the preform 1 is delivered from the endless chain 9 side to the wheel 12 side, or at a place near the outlet of the oven 10.

The temperature measured by the temperature sensor 18 is sent to the control unit 14 shown in FIG. 1 and compared with the molding temperature in the control unit 14. Based on the comparison result, the control unit outputs a control signal to the heater 11 in the oven 10 so as to approach the molding temperature. Thus, the production temperature T ₃ rises or drops, the preform 1 is heated to conform to the molding temperature is a temperature suitable for blow molding.

  As shown in FIG. 1, a row of wheels 37, 38, 39 is attached to the second transport path. When the finished product of the bottle 2 is exposed from the mold 6 having opened the mold, the bottle 2 is taken out of the mold 6 by the gripper around the wheel 37 in contact with the wheel 13 and sequentially conveyed to the wheels 38, 39.

  The blow molding machine 3 in the case where some abnormality occurs in the process after the beverage filling such as a filler 46, a capper 48, a labeler, a caser, a palletizer, etc., which will be described later, in the wheel 37. The discharge means 15 which consists of a shooter etc. for discharging | emitting the bottle 2 shape | molded by this out of a conveyance path is provided. When the above abnormality is detected, the gripper is opened, and the bottle 2 released from the gripper is discharged out of the transport path by the discharging means.

  In the transport path of the molded bottle 2 between the blow molding machine 3 and the filling machine 4, a sterilizing agent supply nozzle 29 for sterilizing the bottle 2 is installed. For example, one or a plurality of germicide supply nozzles 29 are disposed around the wheel 39.

  When the bottle 2 molded by the mold 6 of the blow molding machine 3 travels around the wheel 39, a germicide mist is sprayed from the sterilizing agent supply nozzle 29 toward the mouth of the bottle 2. Thereby, the inner and outer surfaces of the bottle 2 are sterilized.

  As a germicide, hydrogen peroxide can be used, and it is effective that the hydrogen peroxide component is contained at 1% by mass or more. As the germicide, in addition to hydrogen peroxide, ethanol, peracetic acid, ozone, one containing one or more components of chlorine-based germicide, or a combination thereof may be used.

  As shown in FIG. 1, the filling machine 4 has a container conveying means for conveying the bottle 2 molded by the blow molding machine 3 on a third conveyance path. The third conveyance path has a row of wheels 40, 41, 42, 43, 44, 45 connected to the wheel 39. The filling machine 4 is surrounded by the chamber 5 b together with the wheels 40, 41, 42, 43, 44 and 45. Sterilized air is constantly blown into the chamber 5b, whereby the sterilized bottle 2 is transported without being contaminated by microorganisms.

  On the outer periphery of the wheel 42, a filler 46 is provided for filling the aseptic bottle 2 with the beverage a. The filler 46 has a number of pivotally movable filling nozzles (not shown) around the wheel 42, and can be filled with the beverage which is the contents into the bottles 2 traveling from each nozzle. A capper 48 is provided around the wheel 44 for attaching and sealing the cap 22 to the beverage-filled bottle 2. The capper 48 is supplied with the cap 22 sterilized by the cap sterilizer 55.

  In addition, since the filler 46, the capper 48, and the cap sterilizer 55 are the same as that of a well-known apparatus, those detailed description is abbreviate | omitted.

  After the bottle 2 sealed by the cap 22 comes out of the chamber 5b, it is transported to a packaging device (not shown) such as a labeler, caser, palletizer, etc., and labels are attached, packed by a case, mounted on a pallet. Sent to the process of

It said preform supply machine 49, the filler 46, the capper 48, labelers, Kesa, when some abnormality occurs in the processes after the beverage filling such palletizer, leave with increased operating temperature of the oven 10 to produce a temperature T ₃ If this happens, energy will be lost and the temperature in the oven 10 will rise excessively.

To prevent this, as conventionally shown in FIG. 3, an error occurs, decreases from the oven 10 after the preform 1 is ejected, the operating temperature of the oven 10 from the production temperature T ₃ to the standby temperature T ₂ It was done. Standby temperature T ₂ is, for example, 40 ° C.. After the error is resolved, in terms of raising the standby temperature T ₂ to a predetermined intermediate temperature T ₁ of less than high production temperature T ₃ than this, by introducing the preform 1 in an oven 10 heated The production of bottle 2 was resumed by heating preform 1 to forming temperature Ta. However, this requires a large amount of waiting time as described above, and the productivity of the bottled product deteriorates.

  Therefore, in order to prevent the deterioration of the productivity of the bottle 2 or the productivity of the bottled product, in the present invention, when the above abnormality occurs, the temperature of the oven 10 is shown in the operating temperature diagram of FIG. Control.

That is, the operating temperature of the oven 10 higher than the standby temperature T _2, the production temperature T ₃ is lowered to a lower predetermined intermediate temperatures T ₁ than maintaining the intermediate temperature T ₁ of a predetermined time X, the predetermined time X If the above abnormality is resolved within the operating temperature of the oven 10 is raised from the intermediate temperature T ₁ of to production temperature T _3, when the abnormality is not resolved within a predetermined time X, the operating temperature of the oven 10 the lowering from the intermediate temperature T ₁ of to the standby temperature T _2. Intermediate temperatures T ₁ is, for example, 80 ° C.. The predetermined time X is, for example, 10 minutes.

For setting the intermediate temperature T ₁ of the oven 10, the temperature sensor 17 is installed in the oven 10, by a signal from the temperature sensor 17 is compared with the intermediate temperatures T ₁ in the control unit 14, FIG. intermediate temperature T ₁ is held properly as shown in 2. However, the intermediate temperatures T ₁ can also be obtained by keeping the current value supplied to the oven 10 to be constant.

By setting the intermediate temperature T _{1 in} this manner, the waiting time from when the abnormality is eliminated to when the production of the bottle 2 is resumed is shortened, and the productivity of the bottle 2 or the productivity of the bottled product is improved. Do.

  Next, the operation of the content filling device will be described together with the content filling method.

  (1) First, cleaning and sterilization in the chamber 5a of the blow molding machine 3 and cleaning and sterilization in the chamber 5b of the filling machine 4 are performed according to known methods.

  (2) After sterilization treatment in the chambers 5a and 5b, the step of forming the preform 1 into a bottle 2 is started.

  First, the preform 1 is introduced into the oven 10 by the operation of the shooter 7 and the wheel 8, and is conveyed in the oven 10 by the endless chain 9. The preform 1 is heated by the heater 11 to a temperature range suitable for molding, that is, a molding temperature Ta, while being conveyed through the oven 10.

  (3) The heated preform 1 is put into the mold 6 which pivots around the wheel 13, and the mold 6 is closed by the action of a cam (not shown). Then, a stretch rod (not shown) is inserted into the preform 1 and blow molding air is blown into the preform 1 so that the preform 1 is blow molded into the bottle 2 in the mold 6. .

  (4) When the molding of the bottle 2 in the mold 6 is completed, the mold 6 is opened, and the finished product of the bottle 2 is taken out of the mold 6 by a gripper (not shown) around the wheel 37. , 39 are transported.

  (5) While the bottle 2 is transported around the wheel 39, a mist of a sterilizing agent such as a hydrogen peroxide solution is sprayed toward the mouth of the bottle 2 from the sterilizing agent supply nozzle 29. Thereby, the inner and outer surfaces of the bottle 2 are sterilized. Next, heated sterile air is blown to the inner and outer surfaces of the bottle 2 as necessary to air rinse the bottle 2.

  (6) The sterilized bottle 2 travels in the filling machine 4 while being delivered to the wheels 40, 41, 42, 43, 44, 45 in the filling machine 4 in order.

  (7) When the bottle 2 travels around the wheel 42 on which the filler 46 is formed in the filling machine 4, the contents such as a beverage subjected to a sterilization treatment such as a beverage are nozzles in the filler 46 (not shown) It is filled from. The bottle 2 filled with the contents is attached and sealed by the capper 48 with the cap 22 sterilized by the cap sterilizer 55, and is discharged from the outlet of the chamber 5b as a bottled beverage.

  (8) The bottled product discharged from the chamber 5b is discharged out of the chamber 5b, transported to a labeler, caser, palletizer or the like, a label is attached, packaged by a case, and put on a pallet.

  (9) As described above, the preform 1 and the bottle 2 are heated by the oven 10, blow-molded to form the heated preform 1 into a bottle 2, filling of the contents into the formed bottle 2, etc. The bottled products are mass-produced on the transportation route of

During production of the bottle 2 and bottled products, as shown in FIG. 2, the operating temperature of the oven 10 is increased to produce a temperature T _3, the preform 1 through the oven 10 is heated to the molding temperature Ta.

  The temperature of the preform 1 which has passed through the oven 10 is detected by a temperature sensor 18, which is compared with the molding temperature Ta in the control unit 14, and the current flowing to the heater 11 is adjusted to eliminate this temperature difference. Temperature is controlled.

(10) If any abnormality occurs in the steps after the beverage filling such as the preform feeder 49, the filler 46, the capper 48, the labeler, the caser, the palletizer, etc., a signal is output from the control unit 14 and the operating temperature of the oven 10 There higher than the standby temperature T _2, are lowered to a lower predetermined intermediate temperatures T ₁ than the production temperature T _3, it is maintained at this intermediate temperature T ₁ of a predetermined time X.

Intermediate temperatures T ₁ is controlled by the temperature of the oven 10 detected by the temperature sensor 17 installed inside the oven 10 is compared with the intermediate temperature T ₁ of a target.

Thus, the operating temperature of the oven 10 is lowered from the production temperature T ₃ to the intermediate temperature T ₁ to prevent loss of energy during the operation for eliminating the abnormality and an excessive rise in the temperature in the oven 10. Ru.

(11) when an abnormality above within the predetermined time X is canceled, a signal from the control unit 14, the operating temperature of the oven 10 is increased from the intermediate temperature T ₁ of to production temperature T _3. Then, at the same time as the abnormality is eliminated, the preform 1 is fed into the oven 10 and heating is started. Therefore, the waiting time for waiting for the conventional feeding of the preform 1 into the oven 10 is unnecessary.

If the abnormality is not resolved within (12) the predetermined time X, a signal from the control unit 14, the operating temperature of the oven 10, the intermediate temperatures T ₁ to the standby temperature T ₂ as shown in FIG. 2 It is lowered.

  As a result, loss of energy and the like are avoided when it takes time to solve the above-mentioned abnormality.

1 ... preform 2 ... container (bottle)
4 ... Filling machine 6 ... Blow molding type 10 ... Oven 15 ... Discharge means 16 ... Stopper 17, 18 ... Temperature sensor T ₁ ... Intermediate temperature T ₂ ... Standby temperature T ₃ ... Production temperature X ... Specified time

Claims (8)

  The heating of the preform by the oven, the blow molding for forming the heated preform into a container, and the filling of the contents into the formed container are continuously performed on the conveyance path of the preform and the container to produce a container. The preform is heated to the forming temperature while raising the operating temperature of the oven to the production temperature, and the operating temperature of the oven is lowered to the standby temperature when an abnormality occurs in the steps after the filling of the contents. In the method for filling contents, when the abnormality occurs, the operating temperature of the oven is lowered to an intermediate temperature higher than the standby temperature and lower than the production temperature, and the intermediate temperature is maintained for a predetermined time. When the abnormality is eliminated within a predetermined time, the operating temperature of the oven is raised from the intermediate temperature to the production temperature, and the difference within the predetermined time is exceeded. Content filling process but that if it is not eliminated, the operating temperature of the oven and wherein the lowering from the intermediate temperature to the standby temperature.   2. A method according to claim 1, wherein the operating temperature of the oven is controlled such that the temperature sensed by the temperature sensor in the oven is an intermediate temperature.   2. A method according to claim 1, wherein the intermediate temperature is controlled by maintaining a constant current value supplied to the oven.   In the content filling method according to any one of claims 1 to 3, the introduction of the preform into the oven is blocked when an abnormality occurs, and the blow-molded container is filled before the content is filled. A content filling method characterized in that the content is discharged out of a transport path.   An oven for heating the preform, a blow mold for molding the heated preform into a container, a filling machine for filling the contents into the molded container, and the oven from the oven to the filling machine through the blow mold The container is provided with preform and container transport paths, and during production of the container, the preform is heated to the molding temperature while raising the operation temperature of the oven to the production temperature, and in the steps after the filling of the contents In the content filling apparatus that lowers the operating temperature of the oven to a predetermined standby temperature when an abnormality occurs, the operating temperature of the oven is higher than the standby temperature when the abnormality occurs, the production temperature The temperature is lowered to a predetermined intermediate temperature lower than the above to maintain this intermediate temperature for a predetermined time, and when the abnormality is eliminated within the predetermined time, The temperature is raised from the intermediate temperature to the production temperature, and the operating temperature of the oven is decreased from the intermediate temperature to the standby temperature when the abnormality is not resolved within the predetermined time. Object filling device.   The content filling apparatus according to claim 5, wherein the operating temperature of the oven is controlled such that the temperature sensed by the temperature sensor in the oven is an intermediate temperature.   The content filling device according to claim 5, wherein the intermediate temperature is controlled by a constant current value supplied to the oven.   The content filling apparatus according to any one of claims 5 to 7, further comprising a stopper for blocking introduction of a preform into the oven when an abnormality occurs, and a blow-molded container comprising the content. What is claimed is: 1. A content filling device characterized in that discharge means is provided for discharging the material out of the transport path before filling the container.

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