JP2011126606A - Pail can for liquid medicines - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pail can for liquid medicines of a one-way type, capable of being manufactured at a low price. <P>SOLUTION: The pail can 10 for the liquid medicines is provided with an inside container 1 made of medicine-proof synthetic resin formed tabularly and an outside container 2 made of metal composing an outer shell for the inside container 1, and of which the inside container 1 has a mouth part 11 which can open to inject the liquid medicines, and of which the outside container 2 has a top plate of which the mouth part 11 has a projecting bore 2a, a bulge body which surrounds the outer circumference in the inside container 1 and a ground plate abutting against a bottom face in the inside container 1, and of which the outside container 2 has rigidity so as to prevent the deformation in the inside container 1 against the internal pressure added to the inside container 1, and of which the inside container 1 has a lid for sealing the pail can 10 for the liquid medicines, a male screw 11a for attaching a dispenser 40 in an attachable and detachable manner on the outer circumference of the mouth part 11, and the dispenser 40 has a ventilating means 42 which can ventilate a compression fluid through the internal in the inside container 1, and a liquid discharging pipe 43 which can discharge the liquid medicines from the internal in the inside container 1. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a liquid chemical pail can. In particular, the present invention relates to a pail can for storing, transporting and dispensing fluids such as electronics industry chemicals.

  For example, chemicals for electronic industry such as photoresist are stored in a chemical container for transportation and delivered to a manufacturing factory. Such chemical containers include a link system that repeatedly uses the same container and a one-way system that uses a new container every time. In particular, in order not to affect the purity of high-purity chemicals, it is preferable to use a one-way type container, but there is a disadvantage that it is not economical. In recent years, a double storage type container in which both of the above types are combined has become widespread.

  In general, a double retractable container has a bag (bag) made of a flexible film that has been washed in advance. The film bag is formed from an inert material and is provided in an outer container. After draining the drug from the film bag, the film bag is discarded and a new film bag is filled with the drug. And the outer container containing a joint etc. is used repeatedly.

  As such a double storage type container, a liquid chemical container that can discharge liquid chemical safely and reliably has been invented (see, for example, Patent Document 1).

Japanese Patent Laid-Open No. 6-100087

  FIG. 8 is a front view of a container and a dispenser according to Patent Document 1, and shows a cross section of the main part. FIG. 8 of the present application corresponds to FIG.

  In FIG. 8, the container according to Patent Document 1 includes a container 7 and a dispenser 8. The container 7 includes an outer container 716, a port (hereinafter referred to as an attachment body) 718, and a retainer 719. The container 7 includes a flexible bag 720, a liquid discharge tube 722, and a coupling 724. The container 7 further includes a lid 726, a breakable seal film 727, and a cap 728.

  In FIG. 8, the outer container 716 has a mouth portion 730 that forms a male screw, and a retainer 719 and an attachment body 718 are attached in the mouth portion 730. The bag 720 is attached to the attachment body 718 and provided in the outer container 716. The coupling 724 is provided in the attachment body 718 and connected to a liquid discharge tube 722 that is lowered into the interior of the bag 720.

  In FIG. 8, a lid 726 surrounds the attachment body 718, the coupling 724, and the mouth 730 of the outer container 716, and seals the attachment body 718 and the outer container 716 with a breakable seal film 727. The cap 728 is screwed to the top of the lid 726.

  In FIG. 8, the outer container 716 is a steel drum, and includes a main plate 732, a body 734, and an inclined top plate 736. The outer container 716 has a mouth 730 in the top plate 736, and the body 734 has a pair of molded handles 738.

  In FIG. 8, the dispenser 8 includes a lower connector 842, a retainer 844, a probe 846, and an upper connector 848. The retainer 844 is nested within the lower connector 842. The probe 846 passes through the retainer 844 and is supported by the retainer 844. The upper connector 848 is connected to the retainer 844 and the lower connector 842 and surrounds the probe 846.

  In FIG. 8, after attaching the attachment body 718 to which the bag 720 is mounted to the mouth 730, before the bag 720 is filled with the liquid chemical, it is preferably inflated with nitrogen. Thereafter, the bag 720 is filled with liquid chemicals via the attachment body 718. Next, the liquid discharge tube 722 and the coupling 724 are inserted into the attachment body 718. The lid 726 places a breakable seal membrane 727 on the top end of the mounting body 718 and seals the cavity 776. Further, a cap 728 can be provided on the mouth 730 of the container 7 to cover the breakable seal film 727.

  During transport and handling of the container 7, all the gas generated in the flexible bag 720 flows through the gas passage formed by the coupling 724 of the drain tube 722, and the cup of the drain tube 722. It can accumulate in a void 776 provided at the upper end of the ring 724.

  The container 7 according to Patent Document 1 includes a breakable seal film 727, and the probe 846 provided in the dispenser 8 breaks through the seal film 727 so that the probe 846 can be inserted into the void 790. By connecting the dispenser 8 to the container 7 and pressurizing the inside of the bag 720 with nitrogen through the dispenser 8 and the empty space 782, the liquid chemical can be discharged from the probe 846.

  The container 7 according to Patent Document 1 has a configuration in which a coupling 724 with a liquid discharge tube 722 is incorporated and transported. If the liquid discharge tube is moved to the dispenser side, the manufacturing cost of the liquid chemical container can be reduced.

  In addition, the container 7 according to Patent Document 1 is a so-called canister that is a completely sealed container, and has a robust structure formed by processing a thick metal plate, but has a problem that the manufacturing cost is expensive. Instead of expensive canister cans, liquid chemical pail cans that can be manufactured at low cost by molding thin metal plates are required.

  Furthermore, the container 7 according to Patent Document 1 is attached to a new bag 720 after the flexible bag 720 from which the liquid chemical has been discharged is discarded and the liquid discharge tube 722 is washed. A one-way pail can saves the time for washing the liquid discharge tube 722 and the time for refilling the outer container 716 with the bag 720, which is rather economical overall.

  For example, in a pail can containing paint, the inner wall of a metal can is coated with a synthetic resin film. In such a pail can, it is difficult to separate the metal and the synthetic resin. And discarding this pail without separating the metal and the synthetic resin is not preferable from the viewpoint of reusing resources for each material. There is a need for a liquid chemical pail can in which metal and synthetic resin can be easily separated and disassembled. The above can be said to be the subject of the present invention.

  The present invention has been made in view of such problems, and provides a one-way liquid chemical pail can that can be easily separated and disassembled from a metal and a synthetic resin by using a pail can that can be manufactured at low cost. The purpose is to do.

  The present inventor can manufacture at low cost by making the inner container made of a chemical resistant synthetic resin surrounded by a metal outer container, and can easily separate and disassemble the metal and the synthetic resin. Based on this finding, the inventors have invented the following new one-way liquid chemical pail can.

  (1) A liquid chemical pail comprising an inner container made of a chemical-resistant synthetic resin formed into a cylindrical shape and a metal outer container constituting the outer shell of the inner container, wherein the inner container is The outer container has a mouth that opens to allow injection of liquid chemicals, and the outer container abuts a top plate having a hole through which the mouth projects, a body that surrounds the outer periphery of the inner container, and a bottom surface of the inner container. A liquid chemical pail can having a base plate, the outer container having rigidity so as to prevent deformation of the inner container with respect to an internal pressure applied to the inner container.

  The liquid chemical pail can according to the invention of (1) includes an inner container made of chemical-resistant synthetic resin and an outer container made of metal. The inner container is formed in a cylindrical shape. The outer container constitutes the outer shell of the inner container. The inner container has a mouth portion that opens to allow injection of liquid chemicals. The outer container has a top plate, a body, and a ground plate. The top plate has a hole from which the mouth projects. The fuselage surrounds the outer periphery of the inner container. The main plate is in contact with the bottom surface of the inner container. The outer container has rigidity so as to prevent deformation of the inner container against the internal pressure applied to the inner container.

  The inner container is formed in a cylindrical shape includes a shape in which the inner container is formed in a right circular cylinder shape, and includes a shape in which the inner container is formed in a conical trapezoidal shape in which the area of the upper surface is larger than the area of the bottom surface. It is out. Further, the fact that the inner container is formed in a cylindrical shape does not exclude that the mouth protrudes from the upper surface of the inner container. The present invention does not necessarily exclude that the inner container is formed in a rectangular tube shape. However, in order to withstand the ease of manufacturing the inner container and deformation such as expansion due to internal pressure, the inner container is preferably a cylinder rather than a square cylinder.

  The inner container made of a chemical resistant synthetic resin may be that the inner container is made of a chemical resistant synthetic resin and can be mass-produced by plastic molding of the inner container. Furthermore, the inner container made of chemical-resistant synthetic resin means an inner container made of a synthetic resin in which chemicals contained in the inner container, that is, chemical substances are in contact with the inner container and chemical reaction, for example, contamination by ions is difficult. is doing. The chemical-resistant synthetic resin includes an acid-resistant synthetic resin, an alkali-resistant synthetic resin, and a corrosion-resistant synthetic resin. For example, polyolefin described below is preferable.

  The outer container may be made of a metal plate to cover the inner container, and constitutes the outer shell of the inner container. The outer container has a structure that protects the inner container or reinforces the mechanical strength of the inner container, and attaches necessary accessories such as a handle and a vine handle.

  The fact that the outer container constitutes the outer shell of the inner container does not necessarily mean that the outer container contacts the entire outer periphery of the inner container. In order to increase the mechanical strength of the outer container itself, an annular zone may be provided on the body surrounding the outer periphery of the inner vessel, and an annular zone may be provided concentrically on the top plate. May be contacted or separated. Further, a hole through which the mouth protrudes may be provided in the top plate, and an annular step may be provided around the hole to reinforce so that a tensile stress is concentrated in the hole and no crack is generated.

  The inner container has a mouth portion that can be injected with liquid medicine, and the liquid medicine can be discharged from the mouth portion. The mouth part may be formed integrally with the main body of the inner container formed in a cylindrical shape, and a separate mouth part may be welded to the main body of the inner container. Further, an annular packing may be interposed between the base of the mouth and the outer container, and it can be waterproofed so that liquid chemicals do not enter between the inner container and the outer container.

  A male screw may be provided on the outer periphery of the mouth, and the liquid medicine pail can is sealed by sealing the opening of the mouth with a cap and further screwing the mouth with a lid. And it can convey without spilling liquid chemicals. In addition, the dispenser can be easily attached and detached using a mouth portion provided with a male screw on the outer periphery. For example, the dispenser includes a liquid discharge tube and a venting means capable of ventilating the compressed fluid inside the inner container, and pressurizing the compressed fluid such as nitrogen from the venting means into the inner container to thereby remove the liquid from the liquid discharge tube. Can dispense liquid chemicals.

  For example, the outer container may be a so-called top plate-fixed pail can in which a flat steel plate is formed into a cylindrical shape, the body is manufactured, and the top plate and the base plate are fixed to the body by tightening. It may be a so-called top plate detachable band type pail can that is fastened to the fuselage by a band, and the top plate has a plurality of claws on the periphery, and this top plate is fastened to the fuselage by a plurality of claws. The so-called top plate detachable lag type pail can may be used. Moreover, the top plate and / or the ground plate may be seam welded to the end of the body as necessary.

  Thus, a pail can formed from a thin steel plate is easier to manufacture and can be manufactured at a lower cost than a canister can formed from a thick steel plate.

  In the liquid chemical pail can according to the invention of (1), the inner container is pressurized with a compressed fluid such as nitrogen, and the liquid chemical is discharged. Here, the outer container has rigidity so as to prevent deformation of the inner container against the internal pressure applied to the inner container. Stiffness may include that the outer container is formed of a rigid metal plate, and that the outer container has a mechanical structure so that the inner container does not deform due to expansion or the like. Can be included.

  The liquid chemical pail can according to the invention of (1) is not configured to be transported by incorporating a coupling with a liquid discharge tube, and is configured to include a liquid discharge tube on the dispenser side. It is also possible to reduce the manufacturing cost of the container.

  In addition, the liquid chemical pail can according to the invention of (1) is a one-way type container that is discarded after the liquid chemical is discharged. However, it is not necessary to clean the liquid discharge tube or to refill the bag into the outer container. Compared with a double-folding type container for liquid chemicals, there is an advantage that it is economical overall.

  Further, in the liquid chemical pail can according to the invention of (1), the inner wall of the metal can is not coated with the synthetic resin film, and the inner container made of the synthetic resin constitutes the outer shell of the metal outer container. . Such a double pail can easily separates and disassembles the metal and the synthetic resin, and can help to recycle resources.

  (2) The pail can for liquid medicine according to (1), wherein the top plate and the main plate are fixed to the body by tightening.

  (3) The liquid chemical pail can according to (1), wherein the top plate is fastened to the body by a band.

  (4) The liquid medicine pail can according to (1), wherein the top plate has a plurality of claws on a peripheral edge, and the top plate is fastened to the body by the plurality of claws.

  (5) The liquid chemical pail can according to (2), wherein a suspension is provided on the top plate.

  For example, a mounting bracket that rotatably supports the suspension may be joined to the top plate by spot welding. It is preferable that the hanger is arranged at the approximate center of the top plate.

  (6) The liquid medicine according to (3) or (4), comprising: a pair of ears provided on the top plate side of the body, and a vine handle that is rotatably connected to the pair of ears. Pail.

  For example, a pair of mounting brackets serving as ears for rotatably supporting a vine handle may be joined to the top plate side of the body by spot welding.

  (7) The liquid body pail can according to any one of (1) to (6), wherein the body is formed in a right cylindrical shape.

  (8) The liquid chemical pail can according to any one of (1) to (6), wherein the body is formed in a conical trapezoidal shape in which an area on the top plate side is larger than an area on the ground plate side.

  (9) The liquid chemical pail can according to any one of (1) to (8), wherein a damage protector is provided on the periphery of the top plate and / or the periphery of the base plate.

  By providing a damage protector on the periphery of the top plate and / or the periphery of the ground plate, damage during transfer can be prevented.

  (10) The liquid chemical pail can according to any one of (1) to (9), wherein the inner container is formed of polyolefin.

  The polyolefin includes polyethylene (PE) and can include polypropylene (PP).

  (11) The liquid chemical pail can according to any one of (1) to (10), wherein the liquid chemical includes a photosensitive resin composition.

  The present invention is a double-structured pail can in which a molded chemical-resistant synthetic resin inner container is surrounded by a metal outer container, and can be manufactured at low cost, and the metal and synthetic resin can be easily separated and disassembled. Pail cans for liquid chemicals can be provided.

1 is a perspective external view showing an embodiment of a liquid chemical pail can according to the present invention. It is a front view which shows one Embodiment of the dispenser connected to the pail can for liquid medicine by the said embodiment, and has shown the principal part in the cross section. FIG. 2 is a state diagram in which the dispenser according to the embodiment is connected to the liquid chemical pail can according to the embodiment, and the dispenser is an exploded view. FIG. 2 is a perspective external view of a liquid chemical pail can according to the embodiment, showing a top plate detachable band type liquid chemical pail can. FIG. 2 is a perspective external view of a liquid chemical pail can according to the embodiment, showing a top plate detachable lug type liquid chemical pail can. FIG. 3 is a perspective external view of the liquid chemical pail can according to the embodiment, showing a T-shaped liquid chemical pail can with a taper formed on the periphery of the top plate and the periphery of the base plate with damage protectors. Yes. FIG. 3 is a perspective external view of the liquid chemical pail can according to the embodiment, showing an S-shaped liquid chemical pail can provided with a damage protection body on the periphery of the top plate and the periphery of the base plate, and the body is formed straight. Yes. It is a front view of the container and dispenser by a prior art, and makes the principal part the cross section.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  FIG. 1 is a perspective external view showing an embodiment of a liquid chemical pail can according to the present invention. FIG. 2 is a front view showing an embodiment of a dispenser connected to the liquid medicine pail can according to the above-described embodiment, and shows a cross section of the main part. FIG. 3 is a state diagram in which the dispenser according to the embodiment is connected to the liquid chemical pail can according to the embodiment, and the dispenser is an exploded view.

  FIG. 4 is a perspective external view of the liquid chemical pail can according to the embodiment, and shows a top plate detachable band type liquid chemical pail can. FIG. 5 is a perspective external view of the liquid medicine pail can according to the embodiment, and shows a top detachable lug type liquid medicine pail can.

  FIG. 6 is a perspective external view of the liquid chemical pail can according to the embodiment, and a T-type liquid chemical pail is provided with a damage protection body on the periphery of the top plate and the periphery of the base plate, and the body is tapered. Shows the can. FIG. 7 is a perspective external view of the liquid chemical pail can according to the embodiment, in which a damage protector is provided on the periphery of the top plate and the periphery of the main plate, and the body is formed in a straight shape. Shows the can.

  First, the configuration of the liquid chemical pail can according to the present invention will be described. In FIG. 1, a liquid chemical pail can 10 (hereinafter referred to as a container 10) includes an inner container 1 made of a chemical resistant synthetic resin and an outer container 2 made of a metal. The inner container 1 is formed in a cylindrical shape. The outer container 2 constitutes the outer shell of the inner container 1. The inner container 1 has a mouth portion 11 that is open so that liquid chemicals can be injected.

  In FIG. 1, the outer container 2 has a top plate 21, a body 22, and a ground plate 23. The top plate 21 has a hole 2a from which the mouth portion 11 protrudes. The body 22 surrounds the outer periphery of the inner container 1. The ground plane 23 is in contact with the bottom surface of the inner container 1.

  The inner container 1 shown in FIG. 1 is formed in a conical trapezoidal shape in which the area of the upper surface is larger than the area of the bottom surface. The inner container 1 is formed of a chemical resistant synthetic resin. The inner container 1 is integrally molded with a mouth 11.

  In FIG. 1, the outer container 2 is made of a metal plate so as to cover the inner container 1, and constitutes an outer shell of the inner container 1. The outer container 2 is not necessarily in contact with the entire outer periphery of the inner container 1. In FIG. 4 or FIG. 5, the trunk 22 surrounding the outer periphery of the inner container 1 (not shown) is provided with an annular zone 22a to increase the mechanical strength of the outer container 2 itself. The annular zone 22 a is partially separated from the inner container 1.

  In FIG. 1, the top plate 21 is provided with a plurality of annular zones 21a concentrically so as to increase the mechanical strength of the outer container 2 itself. The annular zone 21 a is in partial contact with the inner container 1. In addition, an annular step 21b is provided around the hole 2a, and is reinforced so that tensile stress concentrates on the hole 2a and cracks do not occur (see FIG. 2).

  In FIG. 1, a male screw 11a is formed on the outer periphery of the mouth portion 11 (see FIG. 2). The container 10 is sealed by sealing the opening of the mouth part 11 with a cap 31 and screwing the mouth part 11 with a lid 32. And it can be transported without spilling liquid chemicals.

  2 or 3, the dispenser 40 can be easily attached and detached using the mouth portion 11 provided with the external thread 11 a on the outer periphery. The dispenser 40 includes a cylindrical plug body 41, a venting means 42 that can ventilate the compressed fluid into the inner container, and a liquid discharge pipe 43.

  In FIG. 2 or FIG. 3, the plug main body 41 has a seal ring 41 a having an open central portion so as to be freely movable, and the mouth 11 can be sealed by fastening the plug main body 41 to the mouth 11. The ventilation means 42 includes an elbow-shaped (L-shaped) joint 42 a and an opening 42 b penetrating from the outside of the plug body 41 toward the mouth. By connecting the joint 42a to the opening 42b, the compressed fluid can be vented to the inside of the inner container 1. One end of the liquid discharge pipe 43 reaches the bottom surface of the inner container 1, the other end projects from the plug body 41, and is attached to the plug body 41 so as to be sealed. Then, the liquid chemical can be distributed from the liquid discharge pipe 43 by pressurizing a compressed fluid such as nitrogen into the inner container 1 from the aeration means 42.

  The outer container 2 shown in FIG. 1 is a so-called top plate fixing type pail in which a flat steel plate is formed in a cylindrical shape to produce a body 22, and the top plate 21 and the base plate 23 are fixed to the body by winding. It is a can. Further, the outer container 2 shown in FIG. 1 includes a suspension 24 on the top plate 21. The mounting bracket 24a that rotatably supports the suspension 24 is joined to the top plate 21 by spot welding. The suspension 24 is disposed at the approximate center of the top plate 21.

  The outer container 2 shown in FIG. 4 is a so-called top plate detachable band type in which a flat steel plate is formed in a cylindrical shape to produce a body 22, and a top plate 21 is fastened to the body 22 by a band 2b. It is a pail can. Further, the outer container 2 shown in FIG. 4 includes a pair of ears 25a and 25b provided on the top plate 21 side of the body 22 and a vine handle 25 rotatably connected to the pair of ears 25a and 25b. And. And the attachment metal fitting used as a pair of ear 25a * 25b is joined to the top plate 21 side of the fuselage | body 22 by spot welding.

  The outer container 2 shown in FIG. 5 has a plurality of claws 2 c on the periphery of the top plate 21. Then, a plate-shaped steel plate is formed into a cylindrical shape, and the body 22 is manufactured. The top plate 21 is tightened to the body 22 by a plurality of claws 2c. . Further, the outer container 2 shown in FIG. 5 includes a pair of ears 25a and 25b provided on the top plate 21 side of the body 22 and a vine handle 25 rotatably connected to the pair of ears 25a and 25b. And. And the attachment metal fitting used as a pair of ear 25a * 25b is joined to the top plate 21 side of the fuselage | body 22 by spot welding.

  As shown in FIG. 1 or FIG. 6, the body 22 may be formed in a conical trapezoidal shape in which the area on the top plate 21 side is larger than the area on the ground plate 23 side, and as shown in FIG. May be formed in a right cylindrical shape (see FIGS. 4 and 5).

  Moreover, as shown in FIGS. 6 and 7, the damage protection body 26 is provided on both the peripheral edge of the top plate 21 and the peripheral edge of the base plate 23, thereby preventing damage to the container 10 being transferred. For example, the damage protector 26 is a bendable synthetic resin band that forms a groove in the longitudinal direction, and is attached by fitting the groove to the periphery of the top plate 21 and the periphery of the base plate 23. In the case of the conical container 10 shown in FIG. 6, the damage protector 26 may be provided only on the top plate 21 side. When the conical containers 10 are arranged side by side in the vertical and horizontal directions, damage around the top plate 21 can be prevented.

  Next, the operation of the liquid chemical pail can according to the present invention will be described.

  In the container 10 according to the present invention, the inner container 1 is pressurized with a compressed fluid such as nitrogen, and the liquid chemical is discharged. The outer container 2 has rigidity so as to prevent deformation of the inner container 1 against the internal pressure applied to the inner container 1. Having rigidity may include that the outer container 2 is formed of a rigid metal plate, and the outer container 2 has a mechanical structure so that the inner container 1 does not deform due to expansion or the like. Can be included.

For example, the container 10 shown in FIG. 1 is a pail can with a rated capacity of 20 liters and a proof stress of 0.5 kgf / cm ² . The inner container 1 may be formed of a polyolefin such as polyethylene (PE) or polypropylene (PP), and contains a liquid chemical containing a photosensitive resin composition.

  The liquid chemical pail can according to the present invention is a pail can whose outer container is formed from a thin steel plate, and is easier to manufacture than a canister can formed from a thick steel plate, There is an advantage that it can be manufactured inexpensively.

  The liquid chemical pail can according to the present invention is not configured to be transported with a coupling with a liquid discharge tube, and has a liquid discharge tube on the dispenser side. It is also possible to reduce manufacturing costs.

  The liquid chemical pail can according to the present invention is a one-way type container that is discarded after the liquid chemical is discharged, but it saves the trouble of washing the liquid discharge tube and refilling the bag into the outer container. Compared with a double storage type liquid chemical container, there is a merit that it is economical overall.

  Further, in the liquid chemical pail can according to the present invention, the inner wall of the metal can is not coated with the synthetic resin film, and the inner container made of the synthetic resin and the outer container made of the metal constitute the outer shell. Such a double pail can easily separates and disassembles the metal and the synthetic resin, and can help to recycle resources.

  Table 1 shows the results of comparing the time-dependent changes in moisture (%) and metal atomic weight (ppb) contained in the photoresist in each of the liquid chemical pail can according to the present invention and the container according to Patent Document 1. Shown in In Table 1, circle number 1 represents the photoresist contained in the liquid chemical pail can according to the present invention, and circle number 2 represents the photoresist contained in the container according to Patent Document 1.

  As shown in Table 1, it was proved that there was almost no difference in the quality of the liquid chemical accommodated between the liquid chemical pail can according to the present invention and the container according to Patent Document 1 even after 3 months. .

  In addition, when comparing changes in diameter such as sensitivity, viscosity, and film thickness of photoresist, the pail can for liquid chemicals according to the present invention and the container according to Patent Document 1 are almost free from the quality of liquid chemicals to be accommodated. It has been demonstrated that there is no difference. Since it has been demonstrated that even a pail can having a large area where the liquid chemical touches the air layer does not affect the quality of the liquid chemical contained, the pail can for the liquid chemical according to the present invention that can be provided at low cost It is expected to spread.

DESCRIPTION OF SYMBOLS 1 Inner container 2 Outer container 2a Hole 10 Liquid chemical pail can (container)
11 mouth part 21 top plate 22 fuselage 23 ground plate

Claims (11)

A pail can for liquid medicine comprising an inner container made of a chemical resistant synthetic resin formed into a cylindrical shape, and a metal outer container constituting the outer shell of the inner container,
The inner container has a mouth that opens to allow injection of liquid chemicals,
The outer container has a top plate having a hole through which the mouth projects, a body that surrounds the outer periphery of the inner container, and a ground plate that contacts the bottom surface of the inner container,
The outer container has rigidity so as to prevent deformation of the inner container against the internal pressure applied to the inner container,
The inner container has a male screw for detachably attaching a lid and a dispenser for sealing a liquid chemical pail can on the outer periphery of the mouth,
The dispenser is a liquid chemical pail can having a venting means capable of ventilating a compressed fluid into the inside of the inner container and a liquid discharge pipe capable of discharging the liquid medicine from the inside of the inner container.   The liquid chemical pail can according to claim 1, wherein the top plate and the base plate are fixed to the body by winding.   The liquid chemical pail can according to claim 1, wherein the top plate is fastened to the body by a band.   The liquid chemical pail can according to claim 1, wherein the top plate has a plurality of claws on a peripheral edge, and the top plate is fastened to the body by the plurality of claws.   The liquid chemical pail can according to claim 2, wherein a suspension is provided on the top plate.   The liquid chemical pail can according to claim 3 or 4, comprising a pair of ears provided on the top plate side of the body and a vine handle rotatably connected to the pair of ears.   The liquid body pail can according to any one of claims 1 to 6, wherein the body is formed in a right cylindrical shape.   The liquid body pail can according to any one of claims 1 to 6, wherein the body is formed in a conical trapezoidal shape in which an area on the top plate side is larger than an area on the ground plate side.   The liquid chemical pail can according to any one of claims 1 to 8, wherein a damage protector is provided on a peripheral edge of the top plate and / or a peripheral edge of the base plate.   The liquid container pail can according to any one of claims 1 to 9, wherein the inner container is formed of polyolefin.   The liquid chemical pail can according to any one of claims 1 to 10, wherein the liquid chemical contains a photosensitive resin composition.

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