JP2007331792A - Seal condition calculation method, seal condition calculation apparatus, and bag making machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a seal condition calculation method capable of quickly and easily calculating seal conditions, such as a heater temperature leading to a proper interior ultimate temperature and a seal time and improving production efficiency, production cost and product quality, a seal condition calculation apparatus, and a bag-making machine. <P>SOLUTION: A seal condition plane table defined on the basis of seal condition measurements at three points A, B, and C is plotted in a coordinate space having coordinate axes given by three seal conditions (interior ultimate temperature, heat plate setting temperature, and seal time). Based on an input interior ultimate temperature, a heat plate setting temperature and seal time are selected from the seal condition plane table. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a sealing condition calculation method, a sealing condition calculation device, and a bag making machine that calculate a sealing condition for heat sealing.

  Conventionally, there has been a bag making machine that produces a bag-like product by superposing films (sealing materials), conveying them by intermittent feeding, thermocompression bonding (heat sealing), and cutting them into predetermined dimensions. In order to obtain a predetermined seal strength, the bag making method by thermocompression bonding needs to appropriately determine machine settings called seal conditions such as hot plate temperature, seal time, transport time, cooling temperature, seal pressure, and amount of clearance. was there. In particular, in recent years when many kinds of small lots have been made, new material sealing conditions are frequently determined, and time loss, material loss, and quality defects associated therewith have become problems.

In the conventional bag making method, the sealing conditions for obtaining a predetermined sealing strength are often determined depending on the experience and intuition of the operator. In this method, since the correction of the sealing conditions and the measurement of the sealing strength are repeated many times, the appropriate sealing conditions cannot be determined at a time, leading to time loss and material loss.
In addition, the method for determining the seal condition from the seal strength measurement result may result in insufficient seal strength due to a slight decrease in the seal temperature. In order to obtain a sufficient seal strength, it is necessary to set the inner surface temperature to a predetermined temperature (for example, the melting point of the seal material) or more, but the change in the seal strength in that temperature range is small, and the seal strength This is because it is not possible to judge from the seal strength whether the temperature is sufficiently high with respect to the insufficient temperature (see FIG. 7A).

On the other hand, there has been a method for estimating whether the seal strength is equal to or higher than a predetermined value by using the inner surface temperature, which is a temperature between films heat-sealed, as an index. In this method, in order to measure the inner surface reached temperature, a temperature probe such as a thermocouple is sandwiched between upper and lower films and sealed together with the film. In this method, since the seal condition can be determined using the temperature reached to the inner surface as an index, the work of sample preparation and measurement of the seal strength can be omitted.
However, since it is not known how the inner surface temperature changes due to changes in the sealing conditions such as the sealing time and the hot plate temperature, the change of the sealing conditions has to rely on experience and intuition as before. In addition, every time the seal condition is changed, there is a work load of measuring the inner surface temperature.

In order to solve the above-described problem, Patent Document 1 discloses a method for determining a heat seal condition of a plastic. This method is a method of creating an inner surface arrival temperature change graph at each sealing time for each hot plate temperature by using a heat seal heating test apparatus and determining a sealing condition (see FIG. 7B).
However, the sealing process targeted by the heat seal heating test apparatus according to the method of Patent Document 1 performs heating only once, while the sealing process targeted in this case performs heating several times. It is. For this reason, the method of patent document 1 is not applicable to the setting of the sealing conditions of this case.
Japanese Patent No. 3465741

  An object of the present invention is to quickly and easily calculate a sealing condition such as a heating body temperature and a sealing time as an appropriate inner surface temperature, and to improve a production efficiency, a production cost, and a quality, a sealing condition calculation method, and a sealing condition calculation. It is to provide an apparatus and a bag making machine.

The present invention solves the above problems by the following means. In addition, in order to make an understanding easy, although the code | symbol corresponding to the Example of this invention is attached | subjected and demonstrated, it is not limited to this.
According to the first aspect of the present invention, in the seal condition calculation method for calculating the heating body temperature, the inner surface arrival temperature, and the seal time, which are the three seal conditions when the sealing material is heat-sealed, each of the three seal conditions is a coordinate axis. In a coordinate space, a seal condition calculation step for creating a seal condition plane defined or approximated based on measured values of the three seal conditions of at least three points (A, B, C), and the three seal conditions, A sealing condition selection method including selecting a sealing condition on the sealing condition plane.

According to a second aspect of the present invention, in the seal condition calculation method according to the first aspect, the method further includes a seal condition matrix arrangement step of creating a table in which the seal condition planes are arranged in a matrix, and the seal condition selection step includes a matrix arrangement. The sealing condition calculation method is characterized in that the three sealing conditions are selected from the table that has been set.
Invention of Claim 3 has the sealing condition display process which displays the said sealing condition plane and / or the said table on a display part (32) in the sealing condition calculation method of Claim 1 or Claim 2, This is a sealing condition calculation method characterized by the following.
According to a fourth aspect of the present invention, in the sealing condition calculation method according to the second or third aspect, the sealing condition selecting step selects an inner surface temperature based on a welding temperature of the sealing material, and the heating body temperature The sealing condition calculation method is characterized in that the sealing time is selected.
The invention of claim 5 is the seal condition calculation method according to any one of claims 1 to 4, wherein the seal condition plane and / or the table is stored for each different sealing material. It is a sealing condition calculation method characterized by having a process.
The invention of claim 6 is the seal condition calculation method according to claim 5, wherein when the seal condition is changed to the different seal material, the seal condition plane and / or the table corresponding to the different seal material is read. It is a sealing condition calculation method characterized by having a condition reading process.
The invention of claim 7 is the seal condition calculation method according to claim 5 or claim 6, wherein the seal condition storage step and the seal condition read step classify the different seal materials based on a layer configuration. This is a sealing condition calculation method characterized by the following.
The invention of claim 8 is the seal condition calculation method according to claim 5 or claim 6, wherein the seal condition storage step and the seal condition read step classify the different seal materials based on a total thickness, This is a sealing condition calculation method characterized by the following.

According to a ninth aspect of the present invention, in the seal condition calculation device for calculating the heating body temperature, the inner surface arrival temperature, and the seal time, which are the three seal conditions when the seal material is heat-sealed, each of the three seal conditions is a coordinate axis. Seal conditions including a seal condition calculation unit (21) that creates a seal condition plane defined or approximated based on the measured values of the three seal conditions at the at least three points (A, B, C) in a coordinate space. It is a calculation device.
A tenth aspect of the present invention is the sealing condition calculation device according to the ninth aspect, further comprising a sealing condition matrix arrangement section (22) for creating a table in which the sealing condition planes are arranged in a matrix. It is a calculation device.
The invention of claim 11 is the seal condition calculation device according to claim 9 or claim 10, further comprising a display unit (32) for displaying the seal condition plane and / or the table. It is a calculation device.
The invention of claim 12 is the seal condition calculation device according to any one of claims 9 to 11, wherein the input portion (11) to which the inner surface temperature is inputted, and the inputted inner surface temperature. And a sealing condition selection unit (23) for selecting the heating body temperature and the sealing time from the sealing condition plane and / or the table.
A thirteenth aspect of the present invention is the seal condition calculation apparatus according to any one of the ninth to twelfth aspects, wherein the seal condition plane and / or the table is stored for each different seal material. It is a sealing condition calculation apparatus characterized by providing a part (31).
According to a fourteenth aspect of the present invention, in the seal condition calculating apparatus according to the thirteenth aspect, when the seal condition is changed to the different seal material, the seal condition plane and / or the table for reading the table corresponding to the different seal material is read. A seal condition calculation device including a reading unit.
According to a fifteenth aspect of the present invention, in the seal condition calculation device according to the thirteenth or fourteenth aspect, the seal condition storage unit (31) and the seal condition reading unit (24) have the different seal materials in a layer configuration. The sealing condition calculation device is characterized by classifying on the basis of the classification.
According to a sixteenth aspect of the present invention, in the seal condition calculating device according to the thirteenth or fourteenth aspect, the seal condition storage unit (31) and the seal condition reading unit (24) are configured so that the different seal materials are in a total thickness. The sealing condition calculation device is characterized by classifying on the basis of the classification.

  According to a seventeenth aspect of the present invention, there is provided a seal condition calculation device (10) according to any one of the ninth to sixteenth aspects and a seal condition calculated by the seal condition calculation device (10). A bag making machine (50) for bag making a material.

According to the present invention, the following effects can be obtained.
(1) The present invention creates a seal condition plane that is defined or approximated based on measured values of at least three seal conditions (heating body temperature, inner surface arrival temperature, seal time), and any seal condition can be set as a seal condition. Select from the plane.
Thereby, as compared with a case where there is no seal condition plane and conditions are determined by trial and error, it is possible to easily and quickly calculate the seal condition by collecting at least three measured values and creating the seal condition plane. For this reason, production efficiency and production cost can be improved.

(2) In the present invention, since the sealing condition planes are arranged in a matrix and the relationship and values of the three sealing conditions can be clearly shown, the sealing conditions can be easily selected.

(3) Since the present invention displays the sealing condition plane and / or table on the display unit, the sealing condition plane, matrix arrangement, and the like can be visually recognized.

(4) In the present invention, since the heating body temperature and the sealing time are selected based on the welding temperature of the sealing material, the sealing material can be reliably welded, so that the quality can be improved.

(5) Since the present invention stores the sealing condition plane and / or table for each different sealing material, a database of a plurality of sealing conditions can be created.

(6) In the present invention, when the seal material is changed to a different seal material, the seal seal condition plane and / or table corresponding to the different seal material is read out, so that the setting of the seal condition when changing the seal material can be easily performed. It can be carried out.

(7) Since the present invention classifies different sealing materials based on the layer configuration, more precise sealing condition planes and / or tables can be stored and read out.

(8) Since the present invention classifies different sealing materials based on the total thickness, it is possible to more easily calculate the sealing conditions when the heat conduction greatly affects the total thickness.

  The present invention provides a seal condition calculation method, a seal condition calculation device, and a seal condition calculation method that can quickly and easily calculate a seal condition such as a heating element temperature and a seal time as an appropriate inner surface temperature and improve production efficiency, production cost, and quality The purpose of providing a bag-making machine is to measure three seal conditions A, B, and C in a coordinate space with three seal conditions (inner surface temperature, hot plate set temperature, seal time) as coordinate axes. The seal condition plane defined based on the value was created, and the hot plate set temperature and the seal time were selected from the seal condition plane based on the input inner surface reached temperature.

Hereinafter, with reference to the drawings and the like, examples of the bag making machine of the present invention will be given and described in more detail.
Initially, the structure of the bag making machine of a present Example is demonstrated.
FIG. 1 is a diagram illustrating a control block of the bag making machine 1.
As shown in FIG. 1, the bag making machine 1 includes a seal condition calculating device 10 and a bag making processing unit 50.
The seal condition calculation device 10 is, for example, a personal computer that calculates seal conditions for an inner surface reached temperature (seal weld surface temperature), a hot plate set temperature (heated body temperature), and a seal time. The seal condition calculation device 10 includes an input unit 11, a control unit 20, a seal condition storage unit 31, a display unit 32, and a transmission / reception unit 33.
The input unit 11 is an input device such as a keyboard or a touch panel for operating the bag making machine 1. The input unit 11 receives a seal condition such as an inner surface reached temperature by an operator.

The control unit 20 is an arithmetic device such as a CPU (Central Processing Unit) for overall control of the bag making machine 1 and operates the bag making machine 1 in response to an input from the input unit 11. The control unit 20 includes a seal condition calculation unit 21, a matrix arrangement unit 22 (a seal condition matrix arrangement unit), a seal condition selection unit 23, and a seal condition reading unit 24.
The seal condition calculation unit 21 is a seal condition defined on the basis of three actual measurement values of three seal conditions in a coordinate space with three seal conditions (inner surface temperature, hot plate set temperature, seal time) as coordinate axes. This is a control unit for creating a plane (details will be described later).

The matrix arrangement unit 22 is a control unit for creating a table by arranging the seal condition planes created by the seal condition calculation unit 21 in a matrix (details will be described later).
The seal condition selection unit 23 is a control unit for selecting the hot plate set temperature and the seal time from the seal condition plane and the table based on the input inner surface reached temperature.
The seal condition reading unit 24 is a control unit for reading a seal condition plane and a table corresponding to the different seal material from the seal condition storage unit 31 when the seal material is changed to a different seal material.

  The sealing condition storage unit 31 is a storage device such as a hard disk for storing a sealing condition plane and a table for each different sealing material. Each time the seal material is changed, the seal condition storage unit 31 stores a seal condition plane and a table to form a database. In addition, when the sealing condition planes and tables for different sealing materials are already known, the sealing condition storage unit 31 may store these sealing condition planes and tables in advance.

The display unit 32 is a display device such as an LCD (Liquid Crystal Display) that displays a sealing condition plane and a table.
The transmission / reception unit 33 is an electric circuit, an input / output terminal, and the like for transmitting / receiving information on seal conditions to / from the bag making processing unit 50.

The bag making processing unit 50 can communicate information on sealing conditions with the transmission / reception unit 33 via an electric cable or the like, and is a device for actually performing bag making processing (heat sealing). The bag making processing unit 50 receives information on the sealing condition plane and the table from the sealing condition calculation device 10, and sets the sealing conditions based on this information. The bag making processing unit 50 includes a hot plate 51 (heating body), a seal condition setting unit 52, a condition input unit 53, and the like.
The seal condition setting unit 52 is based on the information on the seal condition received from the transmission / reception unit 33 of the seal condition calculation device 10 or the information on the seal condition input to the condition input unit 53, the heating plate set temperature (heating body temperature), It is an electric circuit or the like for setting bag making processing such as a sealing time.
The condition input unit 53 is an input device for an operator to directly input a sealing condition from the bag making processing unit 50 (may also be used as the input unit 11). The condition input unit 53 is used, for example, when actually measuring the above-described three seal conditions, or when finely adjusting the seal condition, and the input information at this time is appropriately transmitted / received by the transmission / reception unit 33 of the seal condition calculation apparatus 10. And stored in the seal condition storage unit 31.

Next, the outline of the sealing condition calculation method according to the present embodiment will be described with reference to FIGS.
FIG. 2 is a graph showing the correlation of seal conditions. FIG. 3A is a graph showing a sealing condition plane, and FIG. 3B is a table showing actual measurement values of the sealing conditions.
In the following description, “inner surface reached temperature” refers to the final reached temperature in accordance with the sealing process of the target bag making machine. That is, if the sealing process of the bag making machine is, for example, “heating → feed → heating → feed → cooling”, it is the temperature at which the seal weld surface is reached during the second heating.
The sealing condition is a setting item of the bag making machine, and among them, the setting items having a great influence on the inner surface temperature are the hot plate setting temperature and the sealing time. From the experimental results, if the conditions of the bag making machine, the material, etc. are the same, the inner surface reached temperature is the hot plate set temperature and the sealing time (limited to the sealing time region used in actual production), as shown in FIG. , (B), it is known that there is a substantially proportional relationship. Therefore, as shown in FIG. 3A, the relationship between the inner surface reached temperature, the hot plate set temperature, and the sealing time can be shown on the sealing condition plane.
When this plane is expressed using a general mathematical expression, it is as follows.
ax + by + cz + d = 0 Equation (1)
here,
x: Hot plate set temperature (° C)
y: Sealing time (msec)
z: inner surface temperature (° C)
a, b, c, d: coefficients.
Therefore, in order to obtain the coefficients a, b, c, and d, information on A (xA, yA, zA), B (xB, yB, zB), and C (xC, yC, zC) is necessary. If the inner surface temperature is measured at three measurement points where the plate set temperature and the seal time are changed, the coefficient can be calculated and the seal condition plane can be defined. (However, these three points must not be on any straight line).
And it is possible to calculate the hot plate set temperature, seal time, and inner surface temperature other than these three measurement points without measuring.

Next, a specific procedure for calculating sealing conditions will be described with reference to FIGS.
FIG. 4 is a table showing a table in which sealing condition planes are arranged in a matrix, FIG. 5 is a graph showing the relationship between the inner surface temperature and time according to this embodiment, and FIG. 6 shows the operation of the bag making machine 1. It is a flowchart which shows.
As shown in FIG. 5, the bag making process by the bag making machine 1 includes a process of “heating → feed → heating → feed → heating → feed → cooling → feed → cooling” (three times heating and two times cooling).
As shown in FIG. 6, in step S <b> 1, the bag making machine 1 starts operation in response to an operation of the input unit 11 (see FIG. 1) from the operator.

  In step S <b> 2, information (data) of three seal conditions collected and measured by the operator is input from the input unit 11. In this example, the conditions of the hot plate set temperature and the sealing time were changed, the inner surface reached temperature was measured, the data of the sealing conditions at three points A, B and C were collected, and this information was input. (The data is shown in a table in FIG. 3B). Thereby, the relationship between the three seal conditions is defined in the seal condition plane (points A, B, and C are shown in FIG. 3A).

In step S3, the seal condition calculation unit 21 calculates the coefficient values from the equation (1) (a = 1030, b = 126, c = −2000, d = 18700), and the following seal condition plane equation ( 2).
50x + 7y-100z-1000 = 0 (2)
As a result, as shown in FIG. 3A, seal condition planes were created in a coordinate space with the three seal conditions as coordinate axes, respectively (seal condition calculation step).
Further, the operator inputs the feed time and the desired inner surface temperature simultaneously with the information on the three seal conditions. This desired inner surface arrival temperature is set based on the melting point (welding temperature) of the seal weld surface, and is usually set to a temperature that is, for example, about 10 ° C. higher than the melting point of the seal weld surface in order to ensure seal welding. . Instead of directly inputting the desired inner surface temperature, the controller 20 may calculate the inner surface temperature based on the melting point of the seal welding surface by inputting the melting point of the seal welding surface.

  In step S4, as shown in FIG. 4, the matrix arrangement unit 22 arranges the seal condition seal condition plane created by the seal condition calculation unit 21 in a matrix based on the equation (2) (a seal condition matrix arrangement step). This matrix arrangement is created so that the inner surface arrival temperature is represented in a table by the hot plate set temperature (vertical) and the sealing time (horizontal). (Note that in FIG. 4, the data of points A, B, and C are indicated by broken line frames). At this time, the control unit 20 stores the created seal condition plane and table in the seal condition storage unit 31 (seal condition storage step). The matrix arrangement is not limited to the format shown in FIG. 4. For example, the horizontal column may be the inner surface arrival temperature, the vertical column may be the hot plate set temperature, and the sealing time may be arranged vertically and horizontally.

  Next, the control unit 20 displays the sealing condition plane and the table on the display unit 32 as a graph and a table (sealing condition display step). Thereby, the operator can confirm at a glance the sealing conditions for obtaining the desired inner surface temperature.

  Next, in step S5, the seal condition selection unit 23 sets a seal condition. The sealing condition selection unit 23 selects a hot plate set temperature (heating body temperature) and a sealing time from the sealing condition plane and table based on the desired inner surface temperature input in step S2 (sealing condition selection step) ). For example, when the input desired inner surface reached temperature is 127 ° C., the hot plate set temperature and the sealing time corresponding to this are distributed in the vicinity of the two-dot chain line shown in FIG. The sealing condition selection unit 23 selects a condition from the balance between the hot plate set temperature and the sealing time. The shorter the sealing time, the better the bag-making process is, but it is necessary to increase the set temperature of the hot plate, which may cause wrinkles on the surface of the seal material that contacts the hot plate. It is. FIG. 4 shows a state in which the seal condition selection unit 23 is classified into three types, that is, the inner surface reached temperature is insufficient, the OK condition (appropriate temperature), and the excessive temperature. In the present embodiment, the seal condition calculation unit 21 determines from this balance and corresponds to the input inner surface temperature 127 ° C. Among them, the seal time is short (to the left of the table), the hot plate set temperature 210 ° C., An example in which a seal time of 450 msec is selected is shown. Here, the selection of the sealing condition by the sealing condition selection unit 23 has been described using the example of the matrix arrangement of FIG. 4, but is not limited thereto. Similar selection conditions can be set regardless of which of the sealing condition plane and the formula (2) of the sealing condition plane is used.

  Moreover, the operator may perform the selection of the sealing condition by himself. In this case, the operator can easily select the sealing condition because the graph and table of the sealing condition plane are displayed on the display unit 32. Furthermore, it may be obtained by calculation from the formula (2) for the sealing condition plane, and can be properly used as necessary. Usually, as described above, the inner surface reached temperature is known in advance based on the melting point of the seal weld surface, so that the optimum sealing time can be easily obtained from the two conditions of the inner surface reached temperature and the hot plate set temperature.

In step S6, the transmission / reception unit 33 transmits the determined seal condition information to the bag making processing unit 50, and then the seal condition setting unit 52, based on the received seal condition information, the hot plate set temperature. Set bag making process such as sealing time.
In step S <b> 7, the bag making machine 1 starts bag making processing (heat sealing) of the sealing material.

  The above process (step) is performed every time the sealing material is changed, and the sealing condition storage unit 31 stores a sealing condition plane and a table for each different sealing material (sealing condition storage process), and a database. Is configured. When the changed seal material exists in the database, the seal condition reading unit 24 reads a seal condition plane and a table corresponding to this material (seal condition reading step). Thereby, the bag making machine 1 can calculate the sealing conditions more quickly and easily, and the operator does not need to measure (collect) the three sealing conditions again. Can be improved. Further, compared with the case where these data are stored on paper as a data sheet, the reading operation is easier, and the work can be prevented from becoming complicated.

Further, the seal condition storage unit 31 and the seal condition reading unit 24 classify different seal materials according to, for example, a layer configuration (for example, a laminated configuration including a polyethylene terephthalate sheet, a polyethylene foam sheet, an aluminum sheet, etc.), a total thickness, and the like. . When the sealing material is classified according to the layer structure, it can be classified more finely, so that the sealing condition with high accuracy can be calculated. The classification based on the total thickness is effective when the heat conduction is more greatly influenced by the thickness difference than the material difference.
Further, the seal condition reading unit 24 sets the seal condition of the seal material similar in layer structure, total thickness, etc. to the specific seal material even if the seal condition of the specific seal material does not exist in the seal condition read unit 24. You may read. Thereby, since the read seal conditions can be referred to, it is possible to improve work efficiency for setting the seal conditions of a specific seal material.

As described above, the bag making machine 1 according to the present embodiment is defined in the coordinate space with the three seal conditions as coordinate axes, based on the measured values of the three seal conditions at three points (A, B, C). And a table showing the sealing condition planes arranged in a matrix. And the sealing condition selection part 23 selects hot plate setting temperature (heating body temperature) and sealing time from a sealing condition plane and a table based on the input inner surface reached temperature.
As a result, the bag making machine 1 can calculate and select the sealing condition easily and quickly by obtaining the sealing condition plane from the three measured values that have been input, so that the product production efficiency and production cost Can be improved. Moreover, since the inner surface temperature is determined based on the welding temperature of the sealing material, the sealing material can be reliably welded, so that the quality can be improved.

  Moreover, since the bag making machine 1 can clearly display the sealing condition plane and the table on the display unit 32, the operator can easily perform the selection even when the sealing condition is selected by himself / herself.

  Further, since the bag making machine 1 stores different seal materials, seal condition planes and tables corresponding to the seal materials in the seal condition storage unit 31, and configures a database, setting of seal conditions when the seal material is changed Can be performed more easily.

(Modification)
The present invention is not limited to the embodiments described above, and various modifications and changes are possible, and these are also within the equivalent scope of the present invention.
(1) In the present embodiment, the seal condition calculation device has shown an example in which the hot plate set temperature and the seal time are calculated and selected based on the inner surface temperature, but is not limited thereto. The sealing condition calculation device may calculate and select other conditions based on the hot plate set temperature and the sealing time. For example, if there is a range of selection of seal materials, but the hot plate set temperature and the seal time are restricted, an appropriate inner surface temperature is calculated based on these two conditions, and a seal that matches this inner surface temperature A material may be selected. Further, when the sealing material is limited and the sealing time is restricted due to the demand for production efficiency, the hot plate set temperature can be calculated from the conditions of the inner surface arrival temperature and the sealing time. As described above, the seal condition calculation apparatus can flexibly cope with various constraint conditions and the like.

(2) In the present embodiment, the example in which the seal condition plane is obtained based on the actual measurement values of the three seal conditions at the three points has been described, but the present invention is not limited to this, and the approximation is based on the actual measurement values of four or more points. A sealing condition plane may be obtained. Thereby, a more accurate sealing condition plane can be created.

It is a block diagram of the bag making machine of the Example by this invention. It is a graph which shows the correlation of sealing conditions. It is the graph etc. which show a sealing condition plane. It is a table | surface which shows the table which arranged the sealing condition plane in matrix. It is a graph which shows the relationship between inner surface arrival temperature and time. It is a flowchart which shows operation | movement of the bag making machine of an Example. It is a figure which shows the graph for determining the sealing conditions by a prior art.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bag making machine 10 Seal condition calculation apparatus 11 Input part 20 Control part 21 Seal condition calculation part 22 Matrix arrangement | positioning part 23 Seal condition selection part 24 Seal condition reading part 31 Seal condition memory | storage part 32 Display part 33 Transmission / reception part 50 Bag making process part 51 Hot plate 52 Seal condition setting part 53 Condition input part

Claims (17)

In the sealing condition calculation method for calculating the heating body temperature, the inner surface arrival temperature, and the sealing time, which are the three sealing conditions when heat-sealing the sealing material,
A seal condition calculation step for creating a seal condition plane defined or approximated based on measured values of at least three points of the three seal conditions in a coordinate space with the three seal conditions as coordinate axes,
A sealing condition selection step of selecting the three sealing conditions from the sealing condition plane;
A method for calculating seal conditions. In the sealing condition calculation method according to claim 1,
A sealing condition matrix arrangement step of creating a table in which the sealing condition planes are arranged in a matrix;
The sealing condition selection step selects the three sealing conditions from a matrix arranged table;
The sealing condition calculation method characterized by this. In the sealing condition calculation method according to claim 1 or claim 2,
Having a sealing condition display step of displaying the sealing condition plane and / or the table on a display unit;
The sealing condition calculation method characterized by this. In the sealing condition calculation method according to claim 2 or claim 3,
The sealing condition selection step selects an inner surface arrival temperature based on the welding temperature of the sealing material, and selects the heating body temperature and the sealing time.
The sealing condition calculation method characterized by this. In the sealing condition calculation method according to any one of claims 1 to 4,
Having a sealing condition storage step of storing the sealing condition plane and / or the table for each different sealing material;
The sealing condition calculation method characterized by this. In the sealing condition calculation method according to claim 5,
A seal condition reading step of reading the seal condition plane and / or the table corresponding to the different seal material when the seal material is changed to the different seal material;
The sealing condition calculation method characterized by this. In the seal condition calculation method according to claim 5 or claim 6,
The sealing condition storing step and the sealing condition reading step classify the different sealing materials based on a layer configuration,
The sealing condition calculation method characterized by this. In the seal condition calculation method according to claim 5 or claim 6,
The sealing condition storing step and the sealing condition reading step classify the different sealing materials based on a total thickness,
The sealing condition calculation method characterized by this. In the sealing condition calculation device for calculating the heating body temperature, the inner surface arrival temperature, and the sealing time, which are the three sealing conditions when heat-sealing the sealing material,
A seal condition calculation unit that creates seal condition planes that are defined or approximated based on measured values of the three seal conditions of the at least three points in a coordinate space having the three seal conditions as coordinate axes,
A seal condition calculation device characterized by the above. In the seal condition calculation device according to claim 9,
A seal condition matrix arrangement unit for creating a table in which the seal condition planes are arranged in a matrix;
A seal condition calculation device characterized by the above. In the seal condition calculation device according to claim 9 or 10,
A display unit for displaying the sealing condition plane and / or the table;
A seal condition calculation device characterized by the above. In the seal condition calculation device according to any one of claims 9 to 11,
An input unit for receiving the inner surface temperature,
A sealing condition selection unit that selects the heating body temperature and the sealing time from the sealing condition plane and / or the table based on the input inner surface reached temperature;
A seal condition calculation device characterized by the above. In the seal condition calculation device according to any one of claims 9 to 12,
A sealing condition storage unit for storing the sealing condition plane and / or the table for each different sealing material;
A seal condition calculation device characterized by the above. In the seal condition calculation device according to claim 13,
A seal condition reading unit that reads the seal condition plane and / or the table corresponding to the different seal material when the seal material is changed to the different seal material;
A seal condition calculation device characterized by the above. In the seal condition calculation device according to claim 13 or claim 14,
The seal condition storage unit and the seal condition readout unit classify the different seal materials based on a layer configuration;
A seal condition calculation device characterized by the above. In the seal condition calculation device according to claim 13 or claim 14,
The seal condition storage unit and the seal condition read unit classify the different seal materials based on a total thickness;
A seal condition calculation device characterized by the above. A seal condition calculation device according to any one of claims 9 to 16,
Based on the seal condition calculated by the seal condition calculation device, a bag making processing unit for bag making the seal material;
A bag making machine.

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