JP2009102040A - Container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent any damage at a contact part between an inlet of a bag stored in a casing and the casing. <P>SOLUTION: A casing 3 comprises a top plate 31, a side surface part 32, and a bottom surface part 33. The top plate 31 has a top plate recessed part 34 which is recessed from a surface part of the top plate 31, an opening part 35 formed in a bottom surface of the top plate recessed part 34, and an abutting part 36 which is provided around the opening part 35 with a cap 4 being abutted thereon. A bag body 2 has an inlet 22, and the inlet 22 is projected outward of the casing 3 from the opening part 35. The cap 4 comprises an upper surface part 41, a side surface part 42 and a flange 43 provided on a peripheral edge of the side surface part 42. The outer peripheral diameter of the flange 43 is larger than the diameter of the opening part 35. When the cap 4 is fitted to the inlet 22, the abutting part 36 is held by the flange 43 and an inlet peripheral part 24 to fix the casing 3 to the bag body 2. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a double-structured container including a bag body that stores a fluid and a housing that houses the bag body.

2. Description of the Related Art Conventionally, as a container for storing a fluid, a double container in which a synthetic resin bag having a fluid inlet is housed in a hard synthetic resin casing has been proposed (see Patent Document 1). ).
JP 2005-82205 A

  The double container of Patent Document 1 includes a bag body and an outer container that covers the bag body. The bag body has a liquid spout, and a tub is provided on the cylindrical body of the liquid spout. The outer container has a lid, and the lid is provided with a through hole. The through hole has an enlarged diameter portion having a larger diameter than the ridge provided in the liquid spout and a reduced diameter portion having a smaller diameter than the ridge. The reduced diameter portion is substantially the same size as the outer diameter of the cylindrical body. In Patent Document 1, a bag provided at a liquid spout of a bag is protruded from a diameter-enlarged portion of a through hole in a lid, and a tubular body portion under the collar is pressed against the reduced-diameter portion. Thereby, the liquid spout of a double container is being fixed with respect to the outer container.

  In the double container of Patent Document 1, the bag body is accommodated in the outer container, but the bag body is not fixed to the outer container. Therefore, when the cylindrical body of the liquid spout of the bag body is transported while being pressed against the reduced diameter portion of the outer container, the contact portion between the cylindrical body of the liquid spout and the reduced diameter portion may be damaged. there were. When the cap or part of the bag body is damaged, there is a case in which the contents are leaked to the outside or the contents are denatured due to poor sealing performance.

  Accordingly, the present invention relates to a double-structured container composed of a bag body and a housing for housing the bag body, and damage at the contact portion between the bag inlet and the housing housed inside the housing. It aims at providing the container which can prevent.

  In order to solve the above-mentioned problems, the present invention is characterized in that a bag body having an inlet for storing a fluid and taking in and out the fluid, a cap screwed into the inlet, and the bag And a housing having a top plate, a side surface portion, and a bottom surface portion, wherein the top plate is recessed from a surface portion of the top plate. A plate recess, an opening provided on a bottom surface of the top plate recess, and an abutting portion provided around the opening to which the cap abuts, and the injection port of the bag body, The cap protrudes from the opening to the outside of the housing, and the cap includes an upper surface portion, a side surface portion, and a flange provided on a peripheral edge of the side surface portion. The gist is that it is larger than the aperture.

  According to this feature, when the cap is attached to the inlet, the flange provided on the peripheral edge of the side surface portion of the cap comes into contact with the contact portion of the housing. When the cap is attached, the contact portion is sandwiched between the flange of the cap and the peripheral portion of the attachment position where the injection port is attached to the bag body.

  Therefore, according to this feature, when the cap is mounted, the contact portion of the housing is sandwiched between the cap flange and the peripheral portion of the attachment position where the injection port is attached to the bag body. Since the bag is fixed, unnecessary contact, friction, etc. between the inlet of the bag and the opening of the housing can be prevented during storage or transportation.

  In the above-described feature, the casing includes a wall portion in which an end portion of the top plate extends in a direction perpendicular to a surface portion of the top plate, and the cap is attached to the injection port. In this case, the upper surface portion is lower than the upper end of the wall portion in a side view of the housing.

  Normally, the cap and the inlet projecting from the top surface of the top plate are susceptible to external impacts, but according to this feature, the side view of the housing can be seen with the cap attached to the inlet. Since the upper surface of the cap is lower than the upper end of the wall portion, the cap and the injection port can be protected by the wall portion. Also, even when the bottom surface of another container overlaps the top surface of the top plate of one container during storage, transportation, etc., the cap and injection port are formed by the bottom surface of the container overlaid on the top. Can be prevented from being damaged.

  In the above-described feature, the casing is preferably made of a metal material. Moreover, it is preferable that the said bag body is formed with the resin material.

  Next, embodiments of the present invention will be described with reference to the drawings. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, it should be noted that the drawings are schematic and ratios of dimensions and the like are different from actual ones. Accordingly, specific dimensions and the like should be determined in consideration of the following description. Moreover, it is a matter of course that portions having different dimensional relationships and ratios are included between the drawings.

  A container 1 according to this embodiment will be described with reference to the drawings. FIG. 1 is a side view of the container 1. FIG. 2 is a plan view of the container 1 as seen from the surface on which the cap is mounted. FIG. 3 is a cutaway perspective view showing a portion of the container 1 cut away.

  The container 1 includes a bag body 2, a housing 3, and a cap 4. A fluid is stored in the bag body 2. The housing | casing 3 accommodates the bag body 2 with which the fluid was stored. The housing 3 protects the bag body 2. Moreover, the cap 4 is attached to an inlet 22 of the bag 2 to be described later. The container 1 is a double-structure container in which a bag body 2 that houses a fluid is housed in a housing 3.

  FIG. 4 is a cross-sectional view showing a cross section of the bag body 2 taken along AA in FIGS. 1 to 3. The bag body 2 has a bag body main body 21 and an inlet 22 for taking in and out the fluid. The bag body 21 has a volume smaller than that of the housing 3. The bag body 21 is preferably substantially the same shape as the inner shape of the housing 3.

  In the present embodiment, the injection port 22 has a substantially cylindrical shape. The diameter of the cylinder may be selected according to the viscosity of the fluid stored in the bag body 2. The injection port 22 has a screw thread 22a on the outer periphery of the cylinder. The injection port 22 protrudes from the housing 3 through an opening (described later) provided on the top plate of the housing 3. The cap 4 is attached to the inlet 22.

  The bag body 21 and the inlet 22 are formed of a soft resin material or the like. As the resin material for forming the bag body 21 and the inlet 22, the following materials are applicable.

  The resin material forming the bag body 21 and the inlet 22 prevents the bag body 21 and the inlet 22 from being dissolved in the fluid inside and adversely affecting the fluid, or the fluid does not leak outside. In addition, there is no particular limitation as long as it has sufficient resistance (including solvent resistance and heat resistance) to the fluid stored therein.

  For example, polyolefins such as polyethylene and polypropylene, polyesters such as polyethylene terephthalate and polybutylene terephthalate, tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer resin (PFA), tetrafluoroethylene-hexafluoropropylene copolymer resin (FEP), Examples thereof include fluorinated polyolefins such as tetrafluoroethylene-hexafluoropropylene-perfluoroalkyl vinyl ether copolymer resin (EPE).

  Among these resins, polyolefins and fluorinated polyolefins are preferable from the viewpoint of resistance (solvent resistance, heat resistance) to moldable fluid and moldability, and polyethylene and polypropylene are particularly preferable.

  Moreover, it is preferable that the thickness of the bag body 21 is in the range of 0.8 mm to 2.0 mm. When it is thinner than 0.8 mm, strength, solvent resistance, and shape retention are deteriorated. On the other hand, if it is thicker than 2.0 mm, the moldability is lowered.

  On the other hand, when the thickness of the bag body 21 is larger than 2.0 mm, the shape retaining property becomes too high. That is, when the molded bag body 2 is folded and stored in the housing 3 from the opening 35, the return from the folded state to the original shape becomes worse. If the bag body 2 does not completely return to its original shape inside the housing 3, it leads to a capacity loss of the bag body 2.

The true density of the resin material forming the bag body 21 is preferably 0.930 g / cm ^{3 to} 0.980 g / cm ³ . When the true density is less than 0.930 g / cm ³ , the strength of the bag body 2 is lowered. Moreover, the shape retention property of the bag body 21 is lowered. When the shape retaining property is lowered, the bag body 2 is buckled when the bag body 2 is housed in the housing 3. Therefore, the efficiency of the work for storing the fluid is reduced. On the other hand, if it is larger than 0.980 g / cm ³ , stress tends to remain locally during the molding process, and the stress cracking resistance of the bag body 21 is lowered depending on the type of fluid stored inside.

  From the above viewpoint, when storing a fluid requiring high purity, it is preferable to use a resin material having high chemical and physical stability. In particular, it is preferable to use high density polyethylene as the resin material of the bag body 21. The material of the bag body 21 and the inlet 22 can be selected according to the chemical properties of the fluid to be stored.

  Examples of the fluid stored in the bag 2 include water, liquids other than water, paints, inks, volatile organic solvents, nonvolatile organic solvents, monomers, oligomers, resin solutions, and other chemicals. As the resin solution, a resin is dissolved in an organic solvent to give fluidity and facilitate handling. The resin includes a thermoplastic resin, a thermosetting resin, and a photosensitive resin.

  Examples of the organic solvent include aromatic hydrocarbons such as toluene and xylene, acetate esters such as ethyl acetate, mono- or dialkyl ethers of mono- or diethylene glycol such as ethyl cellosolve, mono- or di-propylene such as propylene glycol monomethyl ether, and the like. Mono- or dialkyl ethers of glycols, alkyl cellosolve acetates such as ethyl cellosolve acetate, carbonates such as ethylene carbonate and diethyl carbonate, lactones such as γ-butyrolactone, ketones such as methyl ethyl ketone, 2-heptanone and cyclopentanone Hydroxy, alkoxy such as ethyl lactate, methyl 3-methoxypropionate and ethyl pyruvate, alkyl oxyalkylcarboxylates, and the like.

  As monomers and oligomers, methyl (meth) acrylate, ethyl (meth) acrylate, 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, cyclohexyl (meth) acrylate, β-carboxyethyl (meth) acrylate , Polyethylene glycol di (meth) acrylate, 1,6-hexanediol di (meth) acrylate, triethylene glycol di (meth) acrylate, tripropylene glycol di (meth) acrylate, trimethylolpropane tri (meth) acrylate, pentaerythritol Tri (meth) acrylate, 1,6-hexanediol diglycidyl ether di (meth) acrylate, bisphenol A diglycidyl ether di (meth) acrylate, neopenthi Glycol diglycidyl ether di (meth) acrylate, dipentaerythritol hexa (meth) acrylate, tricyclodecanyl (meth) acrylate, ester acrylate, (meth) acrylic acid ester of methylolated melamine, epoxy (meth) acrylate, urethane acrylate Various acrylic esters and methacrylic esters, (meth) acrylic acid, styrene, vinyl acetate, hydroxyethyl vinyl ether, ethylene glycol divinyl ether, pentaerythritol trivinyl ether, (meth) acrylamide, N-hydroxymethyl (meth) acrylamide, N-vinylformamide, acrylonitrile and the like can be mentioned.

  Examples of the thermoplastic resin include butyral resin, styrene-maleic acid copolymer, chlorinated polyethylene, chlorinated polypropylene, polyvinyl chloride, vinyl chloride-vinyl acetate copolymer, polyvinyl acetate, polyurethane resin, and polyester resin. Acrylic resins, alkyd resins, polystyrene resins, polyamide resins, rubber resins, cyclized rubber resins, celluloses, polyethylene (HDPE, LDPE), polybutadiene, polyimide resins, and the like.

  Examples of the thermosetting resin include an epoxy resin, a benzoguanamine resin, a rosin-modified maleic acid resin, a rosin-modified fumaric acid resin, a melamine resin, a urea resin, and a phenol resin.

  In addition, as the photosensitive resin, a (meth) acryl compound having a reactive substituent such as an isocyanate group, an aldehyde group, or an epoxy group on a polymer having a reactive substituent such as a hydroxyl group, a carboxyl group, or an amino group, A resin obtained by reacting cinnamic acid and introducing a photocrosslinkable group such as a (meth) acryloyl group or a styryl group into the polymer is used. Further, a linear polymer containing an acid anhydride such as a styrene-maleic anhydride copolymer or an α-olefin-maleic anhydride copolymer is converted into a (meth) acrylic compound having a hydroxyl group such as hydroxyalkyl (meth) acrylate. Half-esterified products are also used.

  FIG. 5 is a cross-sectional view showing a cross section of the housing 3 taken along AA in FIGS. 1 to 3. The housing 3 includes a top plate 31, a side surface portion 32, and a bottom plate 33, and has a bottomed cylindrical shape.

  The housing 3 has a top plate recess 34 that is recessed from a surface portion of the top plate 31 at a predetermined position of the top plate 31. The top plate recess 34 is provided closer to the end than the center of the top plate 31. An opening 35 is provided on the bottom surface of the top plate recess 34.

  The bag body 2 is accommodated inside the housing from the opening 35 of the top plate 31 of the housing 3. The diameter of the opening 35 is determined in consideration of the housing operation of the bag body 2. That is, it is a size that can be inserted into the housing 3 from the opening 35 in a state in which the bag body 2 is folded. In addition, the aperture 35 has a diameter larger than at least the cylindrical outer diameter of the injection port 22.

  Further, the opening 35 has a contact portion 36 around the opening 35. A flange (described later) of the cap 4 contacts the contact portion 36.

  In addition, the housing 3 has a wall portion 37 that extends in the direction perpendicular to the main surface of the top plate 31 at the end of the top plate 31.

  The housing 3 is formed of a hard synthetic resin material, a metal material, or the like.

  FIG. 6 is a perspective view illustrating the cap 4 attached to the inlet 22 of the bag body 2. The cap 4 includes a cap upper surface 41, a cap side surface portion 42, and a flange 43.

  The cap side surface portion 42 has a screw groove on the inner wall surface, and can be screwed into the screw thread 22a of the inlet 22 provided with the screw thread 22a. A packing 45 (not shown in FIG. 6) is provided on the surface opposite to the cap upper surface 41.

  The cap 4 has a flange 43 on the periphery of the end opposite to the side of the cap side surface 42 where the cap upper surface 41 is continuous. The diameter of the outer periphery of the flange 43 is larger than the diameter of the opening 35. Further, the cap side surface portion 42 has a side surface convex portion 44. The side convex portion 44 has a function as an anti-slip when the user tightens or loosens the cap 4.

  The material forming the cap 4 may be the same as the material forming the bag body 2. Moreover, a metal material may be sufficient. However, it is preferable to select according to the chemical properties of the fluid stored in the bag body 2.

  Subsequently, in the container 1 shown as the embodiment of the present invention, a state when the cap 4 is attached to the injection port 22 in a state where the bag body 2 is accommodated in the housing 3 will be described with reference to the drawings. FIG. 7 is an enlarged view showing the vicinity of the inlet 22 of the AA cross section in FIGS. 1 to 3 of the container 1 in an enlarged manner.

  The cap 4 is attached to the injection port 22 of the bag body 2 and screwed into the injection port 22. At this time, the flange 43 provided on the cap 4 comes into contact with the contact portion 36 of the housing 3. When the cap 4 is further screwed into the injection port 22, the flange 43 and the vicinity of the attachment position where the injection port 22 is attached to the bag body 2 (the injection port peripheral portion 24 shown in FIG. 7) sandwich the contact portion 36. . Thereby, the bag body 2 is fixed to the housing 3. When the cap 4 is further tightened, the force F (working in the direction of the arrow in FIG. 7) between the contact portion 36 and the flange 43 and the inlet peripheral portion 24 increases. Thereby, the bag body 2 is more firmly fixed to the housing 3.

  Further, when the cap 4 is screwed into the inlet 22, the packing 45 is pressed against the end of the inlet 22 and the surface opposite to the cap upper surface 41, and the gap between the opening 23 of the inlet 22 and the cap 4 is sealed. Is done. Thereby, it is possible to prevent the fluid stored in the bag body 2 from leaking to the outside.

  When the cap 4 is attached to the injection port 22 and screwed in, the flange 43 of the cap 4 receives a reaction of the force F applied to the contact portion 36. The side protrusions 44 increase the strength against the force (the reaction of the force F) that causes the flange 43 to bend toward the cap upper surface 41 side.

  Further, in the container 1, when the cap 4 is attached to the injection port 22, the cap upper surface 41 is lower than the upper end of the wall portion 37 in the side view of the housing 3. In FIG. 7, the cap upper surface 41 is shown lower than the broken line L connecting the upper ends of the wall portions 37. In the side view of the container 1, the cap upper surface 41 is hidden behind the wall portion 37 and cannot be seen (see FIG. 1).

  Further, the end portion of the contact portion 36 around the opening portion 35 has a function as a liquid reservoir.

(Action / Effect)
In the container 1 shown as an embodiment of the present invention, the housing 3 includes a top plate recess 34 that is recessed from the main surface of the top plate 31, an opening 35 provided on the bottom surface of the top plate recess 34, and an opening 35, and has a contact portion 36 with which the flange 43 of the cap 4 comes into contact. The bag body 2 has a bag body 21 and an injection port 22, and the injection port of the bag body 2 22 projects from the opening 35 to the outside of the housing 3. Further, the outer diameter of the flange 43 provided on the cap 4 is larger than the diameter of the opening 35. According to the container 1, when the cap 4 is attached to the bag body 2 and screwed into the injection port 22, the flange 43 provided on the cap 4 is brought into contact with the contact portion 36 of the housing 3. When the cap 4 is further screwed into the injection port 22, the contact portion 36 is sandwiched between the flange 43 and the inlet peripheral portion 23. Thereby, the bag body 2 is fixed to the housing 3. When the cap 4 is further tightened, the force F (working in the direction of the arrow in FIG. 7) between the contact portion 36 and the flange 43 and the inlet peripheral portion 24 increases. Thereby, the bag body 2 is more firmly fixed to the housing 3.

  Therefore, the container 1 can fix the bag body 2 to the housing 3 by attaching the cap 4 to the inlet 22 of the bag body 2. Since the container 1 can fix the bag 2 to the housing 3 in this way, unnecessary contact between the inlet 22 of the bag 2 and the opening 35 of the housing 3 during storage or transportation, Friction etc. can be prevented.

  Further, the housing 3 has a wall portion 37 that extends in a direction perpendicular to the main surface of the top plate 31 at an end portion of the top plate 31 of the housing 3. When the cap 4 is attached to the injection port 22, the cap upper surface 41 is lower than the upper end of the wall portion 37 in a side view of the housing 3. Normally, the cap 4 and the injection port 22 protruding from the surface portion of the top plate 31 are susceptible to external impacts, but the side view of the housing 3 can be seen with the cap 4 attached to the injection port 22. The cap upper surface 41 is lower than the upper end of the wall portion 37, so that the cap 4 and the inlet 22 can be protected by the wall portion 37. Further, even when the bottom surface portion 33 of another container 1 overlaps the surface portion of the top plate 31 of one container 1 at the time of storage, transportation, etc., the bottom surface portion of the container 1 stacked on the top surface 33 can prevent the cap 4 and the inlet 22 of the lower container 1 from being damaged.

  Although an example of the present invention has been described above, the present invention is not particularly limited, and the specific configuration and the like of each part can be appropriately changed in design. In addition, the functions and effects of the embodiment only list the most preferable functions and effects resulting from the present invention, and the functions and effects of the present invention are not limited to those described in the embodiments.

  For example, the container 1 can be used for storing and transporting resist ink used for resist processing of a semiconductor substrate. When used for storing and transporting resist ink, the bag body 2 is a material resistant to resist ink (organic solvent). Similarly, the packing 44 is preferably made of a material resistant to resist ink. For example, since resist ink has a chemical property that dissolves rubber, rubber packing is not used in this case.

  Moreover, although this embodiment demonstrated the case where the housing | casing 3 was a bottomed cylindrical shape, the shape of the housing | casing 3 is not limited.

  Further, the fluid is not limited to a liquid, and may be a paste or a granule.

  It goes without saying that the present invention includes various embodiments and the like not described herein. The technical scope of the present invention is defined only by the invention specifying matters according to the scope of claims reasonable from the above description.

It is a side view of the container which concerns on embodiment of this invention. It is the top view which looked at the said container from the surface where a cap is mounted | worn. It is a notch perspective view which notches and shows a part of said container. It is sectional drawing which cut | disconnected the bag body which comprises the said container by AA in FIG. It is sectional drawing which cut | disconnected the housing | casing which comprises the said container by AA in FIG. It is a perspective view explaining the cap which comprises the said container. FIG. 4 is an enlarged view of a main part of the container showing an enlarged main part of the AA cut surface in FIGS. 1 to 3.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Container, 2 ... Bag body, 3 ... Housing | casing, 4 ... Cap, 21 ... Bag body main body, 22 ... Injection port, 22a ... Screw thread, 23 ... Opening, 24 ... Periphery inlet peripheral part, 31 ... Top plate, 32 ... Side plate, 33 ... Bottom plate, 34 ... Top plate recess, 35 ... Opening, 36 ... Abutting portion, 37 ... Wall, 41 ... Cap top surface, 42 ... Cap side surface, 43 ... Flange, 44 ... Side projection Part, 45 ... packing

Claims (4)

A bag body that stores a fluid and has an inlet for taking in and out the fluid;
A cap screwed into the inlet;
A container including a housing for housing the bag,
The housing is
A top plate, a side surface, and a bottom surface;
The top plate is a top plate recess recessed from the surface portion of the top plate;
An opening provided on the bottom surface of the top plate recess,
A contact portion provided around the opening and with which the cap contacts;
The inlet of the bag protrudes from the opening to the outside of the housing,
The cap is
An upper surface,
Side part,
A flange provided on a peripheral edge of the side surface portion;
The outer diameter of the flange is larger than the diameter of the opening. The housing is
An end portion of the top plate has a wall portion extending in a direction perpendicular to a surface portion of the top plate;
The container according to claim 1, wherein when the cap is attached to the injection port, the upper surface portion is lower than the upper end of the wall portion in a side view of the housing.   The container according to claim 1, wherein the casing is made of a metal material.   The container according to claim 1, wherein the bag is made of a resin material.

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