JP2008296985A - Adhesive storage pouch and its manufacturing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a manufacturing method of an adhesive storage pouch allowing lowering of required die accuracy and its setup accuracy, facilitating heat bonding with high airtightness free from breakage of a thermoplastic synthetic resin film or failure in adhesion, and facilitating drawing out of a tube after the heat bonding, and the pouch. <P>SOLUTION: A tube 1 is prepared by rolling a gas-barrier sheet and heat bonding overlaps, and in addition a top lid 2 having a synthetic-resin-made pedestal having a discharging tube on an upper part of a top wall and a peripheral sidewall 21 on a lower part is prepared. When fitting and heat bonding the peripheral sidewall to the upper part of the tube, a mandrel 4 having a tapered face 40 with a smaller diameter toward the tip is used for fitting the tube. A heat-bonding die 5 equipped with a tapered face 50 expanding toward an opening is used. The heat-bonding die and the mandrel are relatively moved to press the tapered surfaces against each other to have the internal surface of the peripheral sidewall and the external surface of the upper part of the tube pressed and heat-bonded. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an adhesive-containing pouch and a method for producing the same.

Sealant and adhesive (hereinafter referred to as adhesives) consisting of viscous fluids such as urethane resin, modified silicone resin, epoxy resin, elastic rubber resin, acrylic resin, etc. are stored in an airtight / watertight state and loaded into a gun. A flexible bag-like container called a pouch as shown in the prior art is known as a means to push and use by pushing from behind or by grasping and squeezing by hand.

As shown in FIG. 1 (a), this prior art pouch is formed by fitting a canopy having a peripheral side wall around a gas barrier disc to a cylindrical body obtained by rolling a gas barrier sheet and thermally bonding both end portions in the width direction. The structure is provided with a synthetic resin pedestal integrally bonded to the top of the canopy and integrally bonded to the surface of the canopy.

However, in the conventional adhesive-containing pouch, as shown in FIG. 1A, the cylinder A is straight up to the upper end (parallel to the axis), and the peripheral side wall B1 of the canopy B is also straight ( Parallel to the axis).
For this reason, when it is going to manufacture the adhesives accommodation pouch of Fig.1 (a), as shown in FIG.1 (b), it is a straight thing to the upper end as the internal metal mold | die C which fitted the cylinder A externally. Is used, the canopy B having the peripheral side wall B1 is fitted and the inner surface of the thermobonding die D for thermally bonding the thermoplastic synthetic resins to each other is also straight.

In such means, since the thermal bonding mold D is moved from the standby position and the straight inner surface faces the straight peripheral side wall B1 of the canopy B, the bonding is performed. In order to avoid galling or, on the contrary, to generate a gap between the peripheral side wall B1, the accuracy of the inner mold C and the setup of the mold, the accuracy of the canopy B and the thermal bonding mold D In addition, the required degree of setup accuracy is increased, and a high accuracy of the oil film of the thermoplastic synthetic tree is required.
For this reason, manufacturing becomes extremely difficult and expensive in combination with an increase in mold costs, and in reality it is difficult to avoid variations in accuracy. The mold D collides and the resin film breaks, or the defective product occurs due to misalignment due to the center misalignment between the internal mold C and the thermal bonding mold D. It has been difficult to produce seed adhesive pouches.

Further, after the thermal attachment of the cylinder A and the canopy B, when the cylinder A is pulled out from the internal mold C, due to the thermal shrinkage of the thermoplastic synthetic resin in the thermal bonding portion, the pseudo adhesion to the internal mold C, and the friction coefficient There was a problem that troubles that could not be removed easily occurred.
Japanese Patent No. 3624132

  The present invention has been made to solve the above-described problems, and the object of the present invention is to reduce the required degree of mold accuracy and set-up accuracy, and still further, a thermoplastic synthetic resin film. Provided is a method for manufacturing an adhesive-containing pouch capable of easily performing high-density thermal bonding that does not cause tearing or poor bonding, and that can be easily pulled out after thermal bonding. There is.

  In order to achieve the above object, the manufacturing method of the adhesive-containing pouch according to the present invention is such that a gas barrier sheet having a thermoplastic synthetic resin film layered on both sides of an aluminum foil is rolled, and the overlap portions at both ends in the width direction are thermally bonded While producing a cylindrical body, a canopy in which a synthetic resin pedestal having a discharge cylinder portion is bonded to the top wall of a gas barrier disc in which a thermoplastic synthetic resin film is layered on both sides of an aluminum foil, When the peripheral side wall is formed at the lower part of the top wall of the canopy and the peripheral side wall is fitted to the upper part of the cylindrical body and thermally bonded, a tapered surface whose diameter decreases toward the tip as a mandrel for mounting the cylindrical body Using the one in the tip region, using a thermal bonding mold with a tapered surface that spreads from the back toward the opening, and moving the thermal bonding mold and the mandrel relative to each other to press the tapered surfaces around ~ side Is characterized by heating fusing adjoin thermoplastic synthetic resin film of the inner surface and the cylindrical body the upper outer surface. (Claim 1)

  In addition, the adhesive-containing pouch of the present invention has a cylindrical body in which a gas barrier sheet having a thermoplastic synthetic resin film layered on both sides of an aluminum foil is rolled and both ends in the width direction are thermally bonded, and both sides of the aluminum foil are heated. A plastic resin base having a discharge cylinder part is bonded to the upper surface of a gas barrier disc layered with a plastic synthetic resin film, and a canopy with a peripheral side wall formed at the bottom of the top wall is provided. An adhesive-containing pouch fitted and thermally bonded to the upper part of a body, the pouch having a cylindrical body and a tapered surface in the tip region, and a taper extending from the back toward the opening It has a tapered shoulder portion in which a thermoplastic synthetic resin film that is in contact with the inner surface of the peripheral side wall and the outer surface of the upper part of the cylinder is thermally bonded by pressing between the tapered surfaces of the thermobonding type provided with a surface. It is said. (Claim 4)

  According to the manufacturing method of the present invention, a taper is provided at the tip region of the mandrel, and a taper is provided at the opening from the back of the thermoadhesive mold to automatically adjust the thickness of the thermoplastic synthetic resin and the gas barrier sheet. Core action is obtained, it is possible to apply a uniform pressing force while bringing the mandrel, the cylinder, the canopy peripheral side wall, and the thermal bonding mold into surface contact without causing galling on the thermal bonding mold and the canopy peripheral side wall. As a result, the degree of demand for mold accuracy and their setup accuracy is reduced.

  In addition, since it becomes possible to increase the pressing force of the thermal bonding mold, effective melting of the thermoplastic synthetic resin film in contact with the cylindrical body and the canopy peripheral side wall can be obtained, and the canopy peripheral side wall can be obtained during drawing processing. It is possible to flow molten thermoplastic synthetic resin into the wrinkle part generated in the gap and the wrinkle part generated from the clearance between the cylinder and the mandrel, so that the gap can be filled. Adhesion becomes possible.

  In addition, since the upper part of the cylinder and the thermal bonding part of the canopy are tapered, there is shrinkage of the thermoplastic synthetic resin film and pseudo-adhesion to the mandrel when pulling out the product that has bonded the cylindrical body and the canopy. Can be easily pulled out.

  According to the adhesive-containing pouch of the present invention, the canopy and the cylindrical body can be reliably integrated and highly airtight, and the upper end of the cylindrical body and the peripheral side wall of the canopy are tapered. Therefore, the insertion into the extrusion gun is facilitated, and the contents can be smoothly extruded.

  Preferably, the thermal bonding step uses a thermal bonding type provided with a mandrel having a tapered surface whose diameter decreases toward the distal end in the distal end region and a tapered surface that spreads from the back toward the opening. A first step of pressing the tapered surfaces by moving the mold and the mandrel relative to each other to heat the thermoplastic synthetic resin film contacting the inner surface of the peripheral side wall and the outer surface of the upper portion of the cylinder, and the cylinder with a canopy by the first step The overlapping portion is moved in the circumferential direction of the mandrel, and the taper surfaces are pressed again by moving the thermal bonding mold of the structure and the mandrel relative to each other at that position, and the upper end portion of the overlapping portion and the inner surface of the peripheral side wall This is performed in the second step of re-thermobonding the thermoplastic synthetic resin film. (Claim 3)

  According to this, the gas barrier sheet is rounded, and a belt-like flat surface extending in the longitudinal direction is provided on the mandrel in order to smoothly heat-bond the overlap portions at both ends in the width direction, thereby providing envelope-type heat bonding of the overlap portion. When the cylindrical body is manufactured by performing only the first step, the taper surface hardly comes into contact with the flat overlap portion and press heating cannot be performed, so the inner surface of the peripheral side wall and the overlap portion are incompletely bonded. However, as the second step, the overlapping part of the canopy cylinder in the first step is moved from the flat surface of the mandrel to the position of the curvature surface, and the thermal bonding type and the tapered surface of the mandrel are pressed again at that position. Since the heating is performed, the pressure can be effectively applied to the overlap portion and the inner surface of the peripheral side wall to melt the resin, while reducing the level difference due to the overlap of the two sheets. Since it is possible to completely thermally bonded and the inner surface, it is possible to form a high sealing state with a high and secure airtightness.

Preferably, the mandrel has a taper selected from an angle of 0.5 to 45 degrees at a position corresponding to the height of the peripheral wall of the canopy, and the thermal bonding type exceeds the height of the peripheral wall of the canopy from the opening. The region has a taper selected from an angle of 0.5 to 45 degrees.
According to this, an effective pressing force can be created without unnecessarily causing wrinkles on the canopy peripheral side wall.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
FIG. 2 shows an example of an adhesive-containing pouch obtained by the present invention, wherein 1 is a cylinder, and a gas barrier sheet 100 in which a thermoplastic synthetic resin film is layered on both sides of an aluminum foil is rounded to obtain a width. It is configured by overlapping both ends in the direction and thermally bonding. Reference numeral 102 denotes an overlap portion thermally bonded to an envelope sticking type.
2 is a canopy, and the lower surface of the synthetic resin pedestal 3 having the discharge cylinder portion 30 is bonded to the upper surface of the top wall 20 made of a gas barrier disc in which a thermoplastic synthetic resin film is layered on both sides of an aluminum foil. The peripheral side wall is drawn at the lower part of the top wall 20.

  The peripheral side wall 21 of the canopy 2 is integrally fitted to the upper end portion of the cylindrical body 1. In the present invention, the cylindrical body 1 has a tapered upper end portion 10 having a tapered shape. A peripheral side wall 21 having a taper shape at substantially the same angle is thermally bonded to the outer peripheral surface of the tapered upper end portion 10.

3 to 5 show the manufacturing process of the adhesive-containing pouch according to the present invention. The cylindrical body 1 is externally fitted to a mandrel 4 made of hard metal or ceramic. A tapered surface 40 is formed on the outer periphery from the end surface to a position of about 5 to 10 mm so as to become thinner toward the upper end.
On the other hand, a cup-shaped thermal bonding mold 5 heated by a band heater element (not shown) such as a band heater is positioned in front of the mandrel 4 in the axial direction. The inner surface of the thermal bonding die 5 is a diameter-expanded tapered surface 50 that extends from the back toward the opening, and a curved surface 500 having a required radius is formed in the opening.

The angle α of the tapered surface 40 of the mandrel 4 and the angle β of the tapered surface 50 of the thermal bonding die 5 are selected from a range of 0.5 to 45 degrees, and the angles α and β are usually the same angle. . However, it may be reasonably different.
The lower limit of the taper angle is set to 0.5 degrees. When the taper angle is smaller than this, a sufficient pressing force can be applied between the mandrel 4, the cylindrical body 1, the canopy peripheral side wall 21 and the thermal bonding die 5. In addition, the self-aligning action becomes insufficient, and it is difficult to deepen the degree of fitting without causing galling between the thermal bonding mold 5 and the canopy peripheral side wall 21.

The upper limit is set to 45 degrees. If the taper angle is too large, the pressing force changes rapidly with respect to the movement distance of the thermal bonding die 5 and the pressing force becomes too strong, causing severe wrinkles. There is a concern that the sealing performance will be reduced. The taper angle is usually about 0.6 to 15 degrees, and more preferably about 0.6 to 10 degrees.

In FIG. 3, (a) is a standby state, and the mandrel 4 is covered with a cylindrical body 1, and in this example, a tapered upper end portion 10 following the tapered surface 40 is formed. Then, the already narrowed peripheral side wall 21 of the canopy 2 is fitted on the tapered upper end portion 10.
From this state, the mandrel 4 and the thermal bonding mold 5 start relative movement in the axial direction. For example, when the thermal bonding mold 5 moves, the fitting starts from the opening as shown in FIG. From the relationship between the taper angles α and β, the enlarged taper surface 50 is close to the taper-shaped peripheral side wall 21 but is not in contact with the required depth. Therefore, unlike the prior art, the opening of the thermal bonding mold 5 collides with the start end portion of the peripheral side wall and breaks it, and it fits smoothly without being squeezed.

When the predetermined degree of fitting is reached, the enlarged taper surface 50 comes into close contact with the taper-shaped peripheral side wall 21b as shown in FIG. 3C, and a strong and uniform pressing force is tapered over the entire circumference. Acts on the upper end 10 and the tapered surface 40. The taper surface 40 functions as a backup mold. At this time, since the thermobonding mold 5 is heated, the thermoplastic synthetic resin film that is in surface contact with the taper-shaped peripheral side wall 21 and the tapered upper end portion 10 is used. Softens or melts and heat bonds.

FIG. 4 (a) shows the state at this time, and the cylindrical body 1 has a polyethylene-based material such as HDPE and LLDPE, a polypropylene-based material such as CPP, or a polypropylene-based material on the front and back surfaces of an aluminum foil a having a thickness of 5 to 40 μm. It is made of a composite film having a predetermined size obtained by laminating thermoplastic synthetic resin films b1 and b2 having good gas barrier properties such as nylon.
The canopy 2 is made of a disc-shaped composite film in which thermoplastic synthetic resin films b1 and b2 having good gas barrier properties such as polyethylene and polypropylene are laminated on both the front and back surfaces of the aluminum foil a. In this invention, since the adhesion between the canopy 2 and the cylinder 1 is uniform over the entire circumference and the strength can be increased, the aluminum foil a of the canopy 2 and the cylinder 1 can be equal or relatively different in thickness. Good.

The enlarged diameter tapered surface 50 and the taper-shaped peripheral side wall 21 are brought into contact with each other so that the thermoplastic synthetic resin film b2 constituting the peripheral side wall tapered surface and the thermoplastic constituting the tapered surface of the cylindrical body 1 are formed. The contact surface of the synthetic resin film b1 is melted and joined by heat and surface pressure.
In the present invention, since the heat bonding is achieved by a strong pressing action by the tapered surface, the portion b3 including the inner surface of the thermoplastic synthetic resin film b2 and the contact surface of the thermoplastic synthetic resin film b1 is in a molten state. As shown in FIG. 4B, the molten portion b3 is squeezed out and flows out to the lower end portion of the peripheral side wall 21, and the end surface of the aluminum foil a and the end surface of the thermoplastic synthetic resin film b1 are covered with surface tension. As a result, the sealing effect is improved, and the penetration of moisture and the like from the end face of the peripheral side wall 21 can be completely shut out.

  Further, since the melted portion b3 also flows in the circumferential direction, as shown in FIG. 4C, the gap g due to wrinkles generated in the peripheral side wall 21 by filling is filled, and the clearance between the cylinder 1 and the mandrel 4 is filled. The gap g due to wrinkles generated from the For this reason, an airtight and highly safe adhesion state can be obtained even in the circumferential direction.

In the present invention, it goes without saying that the gas barrier sheet 100 and the gas barrier disk are not limited to those obtained by laminating one layer of a thermoplastic synthetic resin film on the aluminum foil a. That is, as shown in FIG. 5, a plurality of layers b1-1, b2-1, b1-2, and b2-2 of thermoplastic synthetic resin films may be provided on both surfaces of the aluminum foil a. Printing such as a product name is performed on the inner resin film b1-1 in the outer layer.
To give a specific example, the cylindrical body 1 is formed by laminating nylon and LLDPE on the outer surface side of the aluminum foil a, is laminated with PET and LLDPE on the inner surface side of the aluminum foil a, and the canopy 2 is formed on the inner surface side of the aluminum foil a. Nylon and LLDPE are laminated to each other, and nylon or PET and CPP or LLDPE are laminated on the outer surface side.

FIG. 6 shows an example of an adhesive-containing pouch manufacturing apparatus incorporating the present invention, in which a canopy is manufactured around a main part E that manufactures a cylindrical body, forms a peripheral wall of the canopy, and performs thermal bonding to the cylindrical body. The supply unit F and the cylindrical material production / supply unit G are connected.
The main portion E has a plurality of (8 in the drawing) rod-shaped mandrels 4 arranged radially at equal intervals on the rotary drive mechanism 7 including the central main shaft, and fixes the base end portion of each mandrel 4. A program is set in which the mandrel 4 is pitch-fed by a predetermined rotation angle (45 degrees in this example) by the rotation drive mechanism 7 and stopped for a required time. The main part E is provided with eight stages each having a predetermined process at each mandrel stop position.

As shown in FIG. 7, each mandrel 4 has the tapered surface 40 formed on the free end side over a length of, for example, 5 to 15 mm from the front end surface, and a required position on the peripheral surface, in this example, a plan view. On the center line of the upper surface, a belt-like flat surface 41 that functions as a receiving die for envelope-bonding overlap heat bonding at the time of manufacturing the cylinder is not provided. The flat surface 41 also reaches the tapered surface area, and therefore, a tapered surface is not formed in a portion where the flat surface 41 extends.
Further, each mandrel 4 has a gas guide hole 42 formed on the center line, the leading end of the guide hole 42 opens to the mandrel end face, and the rear end is led into or near the rotary drive mechanism 7 to supply gas. Connected to the drainage means.

The cylindrical body material production / supply unit G includes a gas barrier sheet feed 14, a cutting unit 15 that cuts the required length of the sheet into a rectangular blank 100, and the blank 100 as a main part E. A supply mechanism 16 for supplying the first stage is provided.
As shown in FIG. 8, the supply mechanism 16 has a set of slide blocks 160 each having a freely openable / closable chuck 161 for gripping both side edges of the blank 100 in the thickness direction, and each slide block 160 is not shown. The blank 100 is positioned under the mandrel 4 which is moved in parallel by the rotation of the ball screw 162 by the servo motor.
The supply mechanism 16 may be an intermittent rotation type feeder.

The canopy production and supply unit F includes a gas barrier sheet feed means 8, a press 9 for punching a disk for a top plate downstream thereof, and a feeder 12 that can be intermittently rotated in the vicinity thereof. A synthetic resin pedestal supply line from a parts feeder is connected to the side of the feeder 12. In addition, a transfer / set mechanism 19 for supplying the manufactured disk with a pedestal to the main part E is disposed on the other side portion.
In the canopy production / supply unit F, when the synthetic resin pedestal 3 is supplied to the feeder 12, the disk 2a punched out by the press 9 is placed on the pedestal 3 at the next stop position. Is heated by the heater 13 at the rotation stop position, and the base 3 is thermally bonded to the disk 2a. The disk with the pedestal is supplied to the main part E by the transfer mechanism 19.

The main part E has a homing mechanism 17 that winds the blank 100 around the outer periphery of the mandrel 4 on the first stage that is an extension of the supply mechanism 16, and is displaced by 45 degrees counterclockwise from the first stage. The stage has a heat seal mechanism 18, the third stage displaced 45 degrees with it, the pedestal disc transfer / set mechanism 19, and the fourth stage displaced 45 degrees with this, the canopy peripheral side wall throttle / fit The fifth mechanism in which the joint mechanism 25 is displaced by 45 degrees from this, the shoulder first seal mechanism 26 of the mechanism as described above is provided, and the sixth stage from which the joint mechanism 25 is displaced by 45 degrees is provided in the second shoulder seal mechanism 27. However, the seventh stage displaced 45 degrees is equipped with a product take-out mechanism 28, respectively.

FIG. 9 shows the homing mechanism 17 and its operation. The homing mechanism 17 is located on the lower surface side of the blank 100 moved by the supply mechanism 16 and has a cradle 170 having a suction slit 1701 on the center line, and both sides thereof. A first member 171, 171 that receives the side region of the blank 100 and rises near the mandrel 4 by an actuator such as an air cylinder so that the side region of the blank 100 runs along the mandrel 4; 171 and 171 are located on the left and right above the ascending position, move inward with a time lag, and overlap the side edge of the blank 100 with the flat surface 41 of the mandrel 4 to create an overlap portion 102 ′. Second members 172 and 172 are provided. Further, the homing mechanism 17 is provided with a pre-seal heater 173 that can be moved up and down at a position above the flat surface 41 of the mandrel 4, and when the overlap portion 102 ′ is formed, the flat surface 41 is dotted. Alternatively, the whole is lightly pressed and heated to hold the blank 100 in a cylindrical shape.

The heat seal mechanism 18 is shown in FIG. 10A, and has a vertically movable heater 180 having a length corresponding to the flat surface 41 of the mandrel 4, and this is the overlap portion 102 ′ in the temporarily fixed state. Is pressed against the flat surface 41, and the thermoplastic synthetic resin films b1 and B2 constituting the overlap portion are heated and fused. As a result, an element cylinder 1 ′ having an overlap portion 102 in the form of an envelope is formed. At this time, since the flat surface 41 reaches the tip surface of the mandrel 4, the overlap portion 102 is reliably formed up to the tip portion 1020 as shown in FIG.

Next, when the mandrel 4 turns to reach the third stage, the pedestal disk transfer / set mechanism 19 causes the pedestal disk 2a to be placed on the upper end surface of the cylinder 1 'that is externally fitted to the mandrel 4. The center is set to match and held in this state. This is FIG. 11, and the outer peripheral portion of the disk protrudes outward from the diameter of the element cylinder 1 ′.
FIG. 11 shows an example of the pedestal disc transfer / setting mechanism 19, which is provided at a position where the feeder 12 of the canopy production / supply unit F is stopped, and a protrusion for pushing up the discharge cylinder 30. An actuator 191 having 1911 and a chuck portion 1901 for gripping the discharge cylinder portion 30 from a direction perpendicular to the axis are provided at the tip, and an arm 190 that can pivot about 90 degrees from the horizontal is provided.

At this stage, the pedestal disk 2a is lifted by the protrusion 1911. In this state, the chuck portion 1901 grasps the discharge cylinder portion 30, and when it is confirmed, the arm 190 turns 90 degrees, and has already stopped and waited. A disk is made to approach the upper end surface of the element cylinder 1 ′ that is externally fitted to the mandrel 4. At this time, since a suction force is applied to the guide hole 42 of the mandrel 4, the pedestal disk 2a is reliably set on the upper end surface of the element cylinder 1 '.

Subsequently, the mandrel reaches the canopy peripheral side wall drawing / fitting mechanism 25. The canopy peripheral side wall drawing / fitting mechanism 25 and the process thereof are shown in FIG. 12, and a mold body 25a moved forward and backward by the actuator 251 and a vertically split wrinkle holding part cooperating therewith. The body 25b, 25b is provided.
The mold body 25a has a concave mold 250 for forming a peripheral side wall, and a guide cushion 252 having a hole for loosely fitting the discharge cylinder 30 of the pedestal disk 2a inside.

  Each wrinkle pressing portion 25b has a support 253 having a semicircular groove that substantially matches the outer diameter of the element cylinder 1 'when mating, and a semicircular groove that substantially matches the outer diameter of the element cylinder 1' when mating. In addition, the wrinkle holding body 254 that is held in front of the abutment 253 so as to face the position corresponding to the end region of the mandrel 1 ′ and can be advanced by a cushion type actuator 255 mounted on the abutment 253. It has. The abutment 253 can be moved up and down by a vertical actuator 256.

In this stage, when the mandrel 4 that sucks and holds the pedestal disk 2a stops, the wrinkle holding parts 25b and 25b approach from the separated positions by the vertical actuators 256 and 256 as shown in FIG. Then, the cushion type actuators 255 and 255 are actuated to advance the wrinkle holding body 254 and reach the back of the pedestal disk 2a.
Then, when the mold body 25a is advanced by the actuator 251, the guide cushion 252 fits the discharge cylinder 30 as shown in FIG. 13B, so that a good centering state is created, and the front end of the concave mold 250 is further created. The surface is in contact with the peripheral edge of the pedestal-equipped disc 2a, and the front and back surfaces of the peripheral edge are sandwiched between the combined wrinkle pressing bodies 254. When the mold body 25a moves forward in this state, the mandrel 4 exhibits a punch function, while the wrinkle pressing bodies 254 and 254 are retracted by the pressing force of the concave mold 250, so that the peripheral portion of the pedestal disk 2a is The side wall 21 is molded smoothly by reducing the generation of wrinkles. Thereafter, the mold body 25a is retracted, the wrinkle holding bodies 254, 254 are retracted, and the process is completed by separating them vertically.

The concave mold 250 may have a tapered surface similar to that of the thermal bonding mold 5, thereby forming the peripheral side wall 21 having the tapered surface 10 as shown in FIG. However, when the angle of the tapered surface is as small as 5 degrees or less, the concave mold 250 may have a straight mold surface, and in this case, the taper is provided in the shoulder heat sealing process.

  As described above, the cylindrical body 1 ′ with the peripheral side wall 21 fitted on the tip is moved to the next stage while being held by the mandrel, and the thermal bonding mold is moved as shown in FIGS. 3 and 4. The tapered surfaces are pressed together, and the thermoplastic synthetic resin film in contact with the inner surface of the peripheral side wall and the outer surface of the upper portion of the cylinder is heat-fused. This thermal bonding is preferably performed in two steps by the shoulder first seal mechanism 26 and the shoulder second seal mechanism 27.

  FIGS. 13 and 14 show the shoulder first seal mechanism 26 and the process by which the thermal bonding mold 5 having a tapered surface 50 as shown in FIG. Although it is positioned so as to be able to move forward and backward by 260, as an attached mechanism, in order to release the pseudo-adhesion by pulling out the spot heat bonding die 29 for the overlap tip portion 1020 and the thermally bonded cylinder 1 from the mandrel 4, for example, about 10 mm. The cylindrical body pulling means 33 is provided.

  The spot heat bonding die 29 is held above the flat surface 41 of the stopped mandrel 4 and can be raised and lowered by an actuator 290. The cylindrical body pulling means 33 includes chucks 330 and 330 that are located on both sides in the vicinity of the retracted position of the thermal bonding die 5 and can be raised and lowered by 90 degrees, and an actuator 331 that moves the chucks 330 in the anti-mandrel direction.

The first thermal bonding process by the shoulder first seal mechanism 26 will be described. As shown in FIG. 14 (a), the taper surface 50 and the peripheral wall 21 of the canopy are formed by the advancement of the thermal bonding mold 5. Heating is performed while applying a surface pressure to the tapered surface 40 of the mandrel 4 with the cylindrical body 1 ′ interposed therebetween. These actions are as described above.
However, the mandrel 4 has a flat surface 41 having a certain width reaching the tip, and this portion is a so-called split groove, so that the overlap tip portion 1020 located here has the heat bonding die 5 of the thermal bonding die 5. The taper surface 50 hardly touches, and therefore, the resin on the outer surface of the overlap tip portion 1020 and the partial inner surface of the peripheral side wall 21 corresponding to the portion tend to be in an insufficiently bonded state.

Therefore, when the thermal bonding die 5 is retracted, the spot thermal bonding die 29 is lowered by the actuator 290, and a part 210 of the peripheral side wall 21 is pressed as shown in FIG. At the same time, it is pressed against the flat surface 41 and heated. Thereby, the outer surface resin of the overlap tip portion 1020 and the inner surface of the peripheral side wall portion 210 are completely thermally bonded.
Next, the chucks 330, 330 of the cylindrical body pulling means 33 are erected to hold the discharge cylindrical portion 30 of the canopy 2 as shown in FIG. At the same time, the actuator is actuated to pull the canopy 2 and the cylinder 1 in the axial direction of the mandrel 4 and extract an appropriate length as shown in FIG. Thereafter, the chucks 330 and 330 are opened and tilted to the standby position.
Thereby, the pseudo-adhesion at various places accompanying the thermal history, that is, the adhesion between the flat surface 41 and the overlap adhesion portion 102 and the overlap tip portion 1020 and the adhesion of the cylindrical tip portion to the tapered portion 40 are released.

In this state, the mandrel 4 reaches the stage provided with the shoulder second seal mechanism 27, and the second thermal bonding step is performed.
The shoulder second seal mechanism 27 includes the thermal bonding mold 5 having a tapered surface 50 on the inner surface in the axial direction of the mandrel 4 as in the case of the shoulder first seal mechanism 26. A cylinder rotating mechanism 34 for forcibly rotating the cylinder 1 by an appropriate length in the circumferential direction, that is, a length exceeding the width of the flat surface 41 is provided.

The cylinder rotating mechanism 34 may be a friction roll that is below the stop position of the mandrel 4 in a normal state and that moves up and rotates in contact with the lower part of the cylinder 1. However, since this is a line contact, it is difficult to reliably transmit the rotational force and the amount of rotation is difficult to control.
Therefore, in the embodiment, as shown in FIG. 15, as the cylinder rotating mechanism 34, a belt 340 curved in a U shape is fixed below the mandrel middle portion at the stop position, and both ends thereof are fixed and the actuator 342 A pair of drive bodies 341 and 341 that can move up and down with a time difference are provided by 342.

In this process, when the mandrel 4 is stopped, the driving bodies 341 and 341 are raised as shown in FIG. 16A to bring the belt 340 into contact with the cylindrical body 1 and at the same time, one driving body (right side in the drawing). ) While lowering 341, the other driving body 341 is raised.
As a result of the seesaw operation, the cylindrical body 1 is rotated, and the overlap bonding portion 102, the overlap tip portion 1020, and the peripheral side wall portion 210 are moved from the flat surface 41 of the mandrel 4 to the curvature surface. This method has less resistance due to the rotation imparted by the surface, and the control of the amount of rotation is easy, and therefore, the marking place such as the date of manufacture and the color can be appropriately positioned.

When this rotation is finished, the drive bodies 341 and 341 are lowered, the bonding die 5 is advanced, and the taper surface 50 is brought into contact with the peripheral wall 21 of the canopy and the tapered surface 40 of the mandrel 4 with the cylindrical body 1 interposed therebetween. Reheating adhesion is performed by heating while applying. When the bonding die 5 moves forward, the cylinder 1 that has been appropriately extracted in the previous step is pressed in the axial direction by the taper surface 50 of the bonding die 5, so that the tapered shape of the tip of the cylinder is formed. The part fits on the tapered surface 40 of the mandrel 4.
At this time, since the overlap adhesive portion 102 and the overlap tip portion 1020 and the peripheral side wall portion 210 are located on the curvature surface of the mandrel 4, the overlap tip portion 1020 and the peripheral side wall portion are formed by the tapered surfaces 50 and 40. It is possible to heat 210 while sufficiently pressing 210.

The overlap tip portion 1020 and the peripheral side wall portion 210 that were insufficient in the first step are completely thermally bonded. Further, at the same time, the overlap tip portion 1020 and the peripheral side wall portion 210 that have been flattened due to spot heat bonding being performed on the flat surface 41 of the mandrel 4 are corrected into a curvature, and FIG. A beautiful shoulder with no step is formed. The overlap tip portion 1020 is thicker as the two sheets are superposed, but the step is easy because the mandrel 4 and the taper surface of the heat bonding die 5 are bonded with strong pressure. It can be buried, and heat bonding with high airtightness and high safety is possible.

In addition, this invention includes implementing the overlap seal of a cylinder with the seal bar which has the arc surface which corresponds with the curvature of the mandrel 4. FIG. In this case, the thermal bonding between the canopy and the cylinder can be performed in one step. However, in reality, the accuracy in the longitudinal and width directions, the alignment accuracy, the shape accuracy of each mandrel, etc. must be made precise, so there will be variations in the state and strength of the overlap seal of important cylinders. Inevitable.
On the other hand, when the overlap seal of the cylindrical body is applied on the flat surface 41 of the mandrel 4 as in this embodiment, the above problem can be solved. However, although the thermal bonding with the canopy peripheral side wall becomes a problem along with the sealing by the flat surface 41, it can be solved by the two thermal bonding processes as described above.

The product is obtained as described above, and the mandrel 4 reaches the last stage and stops. At this position, an openable / closable chuck 280 that holds the discharge cylinder portion 30 and a product takeout mechanism 28 including an actuator 281 that moves the chuck 280 in a direction away from the mandrel are disposed. Simultaneously with the operation of the product takeout mechanism 28. Then, air is ejected through the guide hole 42 of the mandrel 4 toward the opening. Since the canopy is pressed by this, the extraction force can be assisted.
The thermal bonding part between the upper part of the cylindrical body 1 and the canopy 2 is tapered, and in the first thermal bonding step, the cylindrical body 1 is once pulled out to substantially eliminate pseudo-adhesion. Since air blown from the air flows into the gap between the cylinder 1 and the mandrel 4 to form an air film, it can be easily pulled out even if the thermoplastic synthetic resin film contracts.
This product removal stage is provided with a printer for printing the date of manufacture, color type, and the like, and printing is performed in parallel with the pulling out. In this case, since the rotation angle of the cylinder is constant, the print positioning can be performed accurately.
As described above, a target pouch having excellent sealing properties can be continuously and efficiently manufactured.

The obtained product is filled in the filling machine with the desired adhesive from the rear opening of the cylindrical body with the canopy 20 as the bottom. After the fixed amount is filled, the composite film sheet remaining on the rear opening side of the cylindrical body 1 is perfectly overlapped, and is sandwiched between hot plates to heat and press the thermoplastic synthetic resin film or ultrasonically. The bottom seal portion 101 is formed by superimposing. The bottom seal portion 101 is not limited. For example, the composite film sheet on the rear opening side of the cylindrical body 1 may be squeezed and ligated with a clip to be a sausage type.

(A) is a fragmentary sectional view of the conventional adhesives accommodation pouch, (b) is a sectional view showing a heat adhesion type in the case of manufacturing. (A) is a partial notch sectional view of the adhesive agent accommodation pouch by this invention, (b) is an enlarged front view of an upper part. (A)-(c) is a fragmentary sectional view which shows the thermal bonding process of a canopy and a cylinder in steps. (A) is an enlarged sectional view at the time of thermal bonding, (b) is an enlarged sectional view in a further advanced state, and (c) is a partial transverse sectional view. It is an expanded sectional view at the time of heat bonding of the other example of a gas barrier sheet. It is explanatory drawing which shows an example of the adhesive agent accommodation pouch manufacturing apparatus to which this invention is applied. (A) is a top view of a mandrel, (b) is sectional drawing. It is a perspective view of a blank supply mechanism. (A)-(c) is sectional drawing which shows a homing mechanism and operation | movement in steps. (A) is sectional drawing of an overlap seal state, (b) is a top view. It is sectional drawing which shows the disk transfer and setting mechanism with a base, and its operation | movement. (A) and (b) are sectional views showing a canopy peripheral side wall drawing and fitting process. It is a perspective view of a shoulder part 1st seal mechanism. (A)-(d) is sectional drawing which shows a 1st heat bonding process in steps. It is a perspective view of the cylinder rotation mechanism in the shoulder second seal mechanism. (A)-(c) is explanatory drawing which shows a 2nd thermal bonding process in steps.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cylindrical body 2 Canopy 3 Synthetic resin base 4 Mandrel 5 Thermal bonding die 10 Tapered upper end part 21 Peripheral side wall 40,50 Tapered surface 102 Overlap adhesion part a Aluminum foil b1, b2, b1-1, b1-2 , B2-1, b2-2 thermoplastic synthetic resin film

Claims (4)

  A gas barrier sheet with a thermoplastic synthetic resin film layered on both sides of an aluminum foil is rolled, and an overlap portion at both ends in the width direction is thermally bonded to produce a cylindrical body, while a thermoplastic synthetic resin film is formed on both sides of an aluminum foil. A canopy is produced by adhering a synthetic resin pedestal having a discharge cylinder part to the top wall of a gas barrier disc layered with, and forming a peripheral side wall at the lower part of the top wall of the canopy and forming the peripheral side wall of the cylindrical body When fitting to the top and thermally bonding, use a mandrel with a tapered surface in the tip region that becomes smaller in diameter toward the tip as a mandrel that fits the cylinder, and from the back to the opening as a heat bonding type Using a taper surface that expands, the thermal bonding mold and the mandrel are moved relative to each other to press the taper surfaces together to heat and melt the thermoplastic synthetic resin film that contacts the inner surface of the peripheral side wall and the outer surface of the upper part of the cylinder. Wear Preparation of adhesives accommodating pouch, characterized in that.   The thermal bonding step uses a mandrel having a tapered surface whose diameter decreases toward the tip in the tip region, and a thermal bonding type provided with a tapered surface that spreads from the back toward the opening. A first step of pressing the tapered surfaces by relative movement to heat the thermoplastic synthetic resin film contacting the inner surface of the peripheral side wall and the outer surface of the upper portion of the cylinder, and the overlapping portion of the cylinder with a canopy in the first step Is moved in the circumferential direction of the mandrel, and the taper surfaces are pressed again by moving the thermobonding mold of the structure and the mandrel relative to each other at that position, and the thermoplastic synthetic resin on the upper end portion of the overlap portion and the inner surface of the peripheral side wall The manufacturing method of the adhesive agent accommodation pouch of Claim 1 performed by the 2nd process of reheat-bonding a film | membrane.   The mandrel has a taper selected from an angle of 0.5 to 45 degrees at a position substantially corresponding to the height of the peripheral wall of the canopy, and the thermal bonding type is in a region beyond the height of the peripheral wall of the canopy from the opening. The manufacturing method of the adhesive agent accommodation pouch of Claim 1 or 2 which has the taper chosen from the angle of 0.5-45 degree | times. A cylindrical body in which a gas barrier sheet with a thermoplastic synthetic resin film layered on both sides of an aluminum foil is rolled and both ends in the width direction are thermally bonded, and a gas barrier disk with a thermoplastic synthetic resin film layered on both sides of the aluminum foil A synthetic resin pedestal having a discharge cylinder portion is bonded to the upper surface of the dome, and a canopy having a peripheral side wall formed at the bottom of the top wall is provided. The peripheral side wall of the canopy is fitted and thermally bonded to the upper portion of the cylindrical body. An adhesive containing pouch, wherein the pouch includes a mandrel having a cylindrical surface and a tapered surface in a tip region, and a thermally bonded type tapered surface provided with a tapered surface extending from the back toward the opening. An adhesive-containing pouch characterized by having a tapered shoulder portion to which a thermoplastic synthetic resin film that is in contact with the inner surface of the peripheral side wall and the outer surface of the upper portion of the cylindrical body is thermally bonded.

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