JP2019099253A - Blow container and method of manufacturing the same - Google Patents

Abstract

To provide a foldable blow container in a substantially rectangular-prism shape such that in injecting and using, it can be securely recognized visually from above what is to be injected and contained and what has been contained, and a method of manufacturing the same, according to the present invention.SOLUTION: The present invention relates to a soft synthetic resin-made foldable blow container in a substantially rectangular-prism shape that has, on two opposite side walls, reinforcing ribs formed therein which substantially bisect the cubic volume thereof and also has an opening part, and a ferrule for fitting a lid body being installed at the opening part, wherein a name of contents contained in the container is printed on a side wall in the container at a periphery of the opening part.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a collapsible substantially rectangular blow container made of soft synthetic resin and a method of manufacturing the same.

  The foldable substantially rectangular blow container is a container made of soft synthetic resin and manufactured by blow molding. When empty, it can be folded to reduce the volume and carry it in an overlapping manner, and when used it can be used as a cardboard box It is placed and poured into a container filled with liquid or powder and inflated and delivered together with a cardboard box.

  Various such blow containers have been proposed. For example, two shells of an isosceles triangular prismatic shape whose apex angle is substantially perpendicular obtained by a molding method such as blow molding, vacuum molding, etc. A straight (or upright) square obtained by welding the periphery (referred to as the parting line) in a state in which the two joint parts project outward together is a portion corresponding to one triangular cylinder ( A soft plastic container having a structure that can be folded and accommodated along the parting line and folded inside the other triangular column equivalent part (referred to as the folded outer layer) along the parting line, the side to be the folded inner layer A protruding ridge (hereinafter referred to simply as a protruding ridge) that bulges continuously in a circular arc along the parting line and toward the outside, and the center line of the ridge and the center of the parting line The distance between the wire and the molded part A foldable soft plastic container characterized in that it is short at the thin points, long at the thick points, and the height of the ridges is low at the thin points and thick points on the thickness of the molded article. Patent Document 1), “In the container body 1 molded using a soft plastic by means such as blow molding, reinforcement is made outward along a line which substantially divides the volume into two (1A, 1B) The rib 3 is formed by fusion, and the opening / closing portion 2 is provided on the upper portion of one of the base bodies 1A, and the other folded body 1B is folded along the reinforcing rib 3 at a position near the reinforcing rib 3 In the soft plastic container in which the thin rib 4 is formed outward and the other folded body 1B is configured to be foldable to the inside of the base 1A, the reinforcing rib 3 is filled with the folded body 1B. When it is stretched, it is deformed so as to cover the top 4a of the ridge 4 and when it is folded into the base 1A, it is configured to lie toward the side surface 4b of the ridge 4 and the tip of the reinforcing rib 3 A soft plastic container is configured such that the edge 3a has a length L located higher than the top portion 4a of the protrusion 4 when it is laid down "(see, for example, Patent Document 2) and the like.

  The above container is suitable for delivery in a cardboard box, but when it is installed in a cardboard box, when the stored material is poured, the upper lid of the cardboard box is folded outward and poured, Is blinded by the upper lid of the cardboard box, so what is to be injected and when using (when discharging the contents) the upper lid of the cardboard box will be folded outward and the side is corrugated cardboard Since it is blinded by the upper lid of the box, there is a drawback that it can not be seen from the top as to what is stored. Moreover, when using it (when discharging stored goods), removing a corrugated-cardboard box is often performed, However, In this case, there existed a fault that a stored thing was not known.

Japanese Utility Model Publication No. 08-8995 Patent 369 848

  SUMMARY OF THE INVENTION In view of the above problems, the object of the present invention is to provide a collapsible substantially rectangular parallelepiped that can be recognized from the top with certainty what is to be injected and stored and what is stored when injecting and using. A blow container and a method of manufacturing the same.

That is, the present invention
[1] Two opposing side walls are formed with reinforcing ribs that divide the volume into approximately equal halves and have an opening, and the opening is provided with a mouthpiece for joining the lid, soft A blowable container having a foldable substantially rectangular parallelepiped shape made of a synthetic resin, wherein the side wall of the container in the vicinity of the opening is printed with the name of a storage item to be stored in the container;
[2] A bottom-side mold having a substantially triangular prism-like cavity, a cylindrical mold having a cylindrical portion and a concavo-convex portion representing the name of a stored item to be stored in a container formed on the cavity-side surface; An opening forming jig slidably inserted into a cylindrical portion of a cylindrical mold, for accommodating the die on the cavity side between the cylindrical mold and the opening forming jig A die is placed in the blow molding mold consisting of a die on the die side having a substantially triangular columnar cavity in which an auxiliary die in which the space is formed is installed, and the die is placed in the space, and melting made of soft synthetic resin After supplying the parison in the state and clamping it, compressed air is injected and expansion molding of the parison is performed, and then the opening forming jig is used to form an opening, and then the mold is opened and removed. [1] It relates to the manufacturing method of the blow container of a statement.

  The configuration of the blow container of the present invention is as described above, and it is possible to reliably recognize from the upper part what is to be poured and stored and what is stored when pouring and using the stored material, When it is empty, it can be folded to reduce its volume and carried in layers, and even if it is installed in a cardboard box, it can infuse and inflate stored items consisting of liquid or powder and be delivered together with the cardboard box. There is no need to make mistakes in storing items. Further, the configuration of the method for producing a blow container of the present invention is as described above, and the blow container can be easily produced.

It is a top view which shows an example of the blow container of this invention. It is a side view showing an example of the blow container of the present invention. It is AA sectional drawing in FIG. It is an enlarged plan view of the opening part periphery in FIG. It is a side view which shows an example of the state which folded the blow container of this invention. It is a schematic diagram which shows an example of the mold for blow molding used with the manufacturing method of the blow container of this invention. It is a sectional view showing an example of a support metallic mold.

  The blow container of the present invention has reinforcing ribs formed on two opposite side walls to divide the volume into approximately equal halves and has an opening, and a mouthpiece for installing a lid is provided at the opening. The container is a collapsible substantially rectangular blow container made of soft synthetic resin, and the side wall of the container around the opening is marked with the name of the stored item to be stored in the container.

  The soft synthetic resin is not particularly limited as long as it is a foldable soft synthetic resin, and it may be hard if it is thick or synthetic resin that becomes soft if it is thin, for example, olefin Examples thereof include system resins, vinyl chloride resins, acrylic resins and the like, and olefin resins are preferable. As the olefin resin, for example, high density polyethylene resin, medium density polyethylene resin, low density polyethylene resin, linear low density polyethylene resin, polypropylene resin, ethylene-propylene copolymer, ethylene-1-butene copolymer, Ethylene-1-pentene copolymer, ethylene-1-hexene copolymer, etc. are mentioned.

  Next, the blow container of the present invention will be described with reference to the drawings. FIG. 1 is a plan view showing an example of the blow container of the present invention, and FIG. 2 is a side view thereof. 3 is a cross-sectional view taken along the line A-A in FIG. 1, and FIG. 4 is an enlarged plan view around the opening in FIG. FIG. 5 is a side view showing an example of the blow container folded.

  In the figure, reference numeral 1 denotes a blow container, which is formed into a substantially rectangular parallelepiped by an upper wall 1a, a bottom wall 1b, a left side wall 1c, a right side wall 1d, a front wall 1e and a rear wall 1f made of soft synthetic resin. An opening 2 is formed in the upper wall 1a, and a recess 12 indented downward is formed around the opening. The mouthpiece 11 for fitting the lid to the recessed portion 12 around the opening is installed, and the name 13 of the stored item to be stored in the container is printed on the side wall of the container which is the recessed portion 12 around it. There is.

  It should be noted that when the mouthpiece 11 is installed at the lowest position at a substantially central portion of the recessed portion 12 and the blow container is installed in the cardboard box, the lid is in contact with the lid portion of the cardboard box The cardboard box is hard to break during transportation. Further, since the blow container of the present invention is made of soft synthetic resin, when the stored material is poured or discharged, the concave portion 12 is protruded so that the mouthpiece protrudes upward, the stored matter is poured, and the mouthpiece 11 is covered. After setting up and sealing the body, the mouthpiece 11 and the lid may be pushed downward. By doing this, the stored items can be more easily injected and discharged, and more stored items can be stored and transported, and the cardboard box is not easily broken during transportation without hitting the lid portion of the cardboard box with the lid protruding. It is preferable because

  In addition, as the printing method of the name 13 of the above-mentioned stored item, any conventionally known method may be adopted, for example, a method of writing with a writing instrument such as magic ink, a method of printing with an inkjet printer, a container in a molten state The method etc. which stamp on a surface with a metal mold are mentioned.

  In the figure, 14 is a reinforcing rib, provided on the diagonal of the front wall 1e and the rear wall 1f in the direction from the left wall 1c side to the right wall 1d side, and along the reinforcing rib 14, the bottom wall 1b and the right wall 1d Is pushed inward of the blow container 1 so as to be foldable along the reinforcing rib 14 as shown in FIG.

  In the method of manufacturing a blow container according to claim 1 of the present invention, a bottom side mold having a substantially triangular prism-like cavity, and a concavo-convex portion representing the name of a stored item to be stored in the container is formed on the cavity side surface. A cylindrical mold having a cylindrical portion and an opening forming jig slidably inserted into the cylindrical portion of the cylindrical mold, and between the cylindrical mold and the opening forming jig A blow molding mold comprising a fixed mold having a substantially triangular prism-shaped cavity, in which an auxiliary mold having a space for housing a die formed therein is provided on the cavity side; A die is placed, and a molten parison made of soft synthetic resin is supplied and clamped, and then compressed air is injected to expansively mold the parison, and then an opening is formed with an opening forming jig, and then the mold is formed. It is characterized by opening and demolding.

  Next, a method of manufacturing the blow container of the present invention will be described with reference to the drawings. FIG. 6 is a cross-sectional view showing an example of the blow molding die, and FIG. 7 is a cross-sectional view showing an example of the cavity side surface of the auxiliary die.

  In the figure, 3 is a bottom side mold and has a cavity 31 of a substantially triangular prism shape. Denoted at 4 is a die on the die side, which has a substantially triangular prism-like cavity 41 of substantially the same shape as the cavity 31. The bottom-side mold 3 and the die-side mold 4 are installed so that the cavity 31 and the cavity 41 face each other and form a substantially rectangular cavity when clamped.

  Reference numeral 5 denotes an auxiliary mold installed in the die 4 on the die side, and installed substantially perpendicular to one surface of the cavity 41 of the die 4 on the die side. The auxiliary mold 5 comprises a cylindrical mold 51 and an opening forming jig 52. A cylindrical portion 51a opened in a cylindrical shape is bored at the central portion in the longitudinal direction of the cylindrical mold 51, and a concavo-convex portion 51c is formed on the cavity side surface 51b to indicate the name of the item to be stored in the container. ing. The opening forming jig 52 is a substantially rod-like body, and is slidably inserted into the cylindrical portion 51 a of the cylindrical mold 51.

  The vicinity of the outlet of the cylindrical mold 51 (near the surface on the cavity side) is cut, and a space 53 for accommodating the die is formed between the opening forming jigs 52. Further, the cavity side surface of the cylindrical mold 51 is formed in a gentle convex shape so that the concave portion 12 can be formed when blow molding is performed.

  In order to manufacture a blow container, the die 11 is first installed in the space 53 of the auxiliary mold 5. Next, a molten parison made of a soft synthetic resin is supplied to the cavities 31 and 41 between the mold-opening bottom side mold 3 and the die side mold 4 so as to hang from the vertical direction in FIG.

  Then, the bottom mold 3 and the die 4 are clamped to form a substantially rectangular cavity, and then compressed air is injected to form a parison by expansion. After the parison is formed into a shape along the cavity surface by expansion, the opening forming jig 52 is slid back and forth to form the opening 2.

  In addition, since the reinforcing rib 14 is formed where the bottom side mold 3 and the die side mold 4 are clamped to form a substantially rectangular cavity, the bottom side is used to make the reinforcing rib 14 thicker. A groove may be formed in the contact portion between the mold 3 and the die-side mold 4 cavity.

  Also, in order to form the opening 2 more accurately, a cutting blade in the shape of the opening is erected on the cavity side surface of the opening forming jig 52, and the opening forming jig 52 is pressed inward. The opening may be formed by rotation.

  When the parison is formed into a shape along the cavity surface by expansion, the concave portion 12 is formed, and an uneven portion 51c representing the name of the stored item to be stored in the container formed on the cavity side surface 51b. Is transferred to the outer surface, and the name of the stored item to be stored in the container is engraved. At the same time, the mouthpiece 11 installed in the space 53 is heat-sealed to the approximate center of the recess 12.

  Finally, the container is cooled, opened and demolded to obtain a blow container.

  The blow container according to the present invention is folded to reduce the volume and stacked to be transported when empty, and installed in a cardboard box when used, for filling and expanding contents made of liquid and powder, and cardboard It is suitable for delivery with boxes and can be widely used in the field of packaging materials that transport liquids and powders.

DESCRIPTION OF SYMBOLS 1 blow container 11 nozzle 12 concave part 13 name of stored item 14 reinforcing rib 2 opening 3 bottom side mold 4 base side mold 31 and 41 cavity 5 auxiliary mold 51 cylindrical mold 51 a cylindrical portion 51 b cavity side surface 51 c uneven portion 52 opening forming jig 53 space

Claims (2)

  Reinforcement rib which divides the volume into two equal sides is formed in two opposite side walls, and it has an opening, and a mouthpiece for fitting a lid in the opening is installed, soft synthetic resin A foldable substantially rectangular blow container, wherein the side wall of the container around the opening is marked with the name of the item to be stored in the container.   A bottom mold having a substantially triangular prism-like cavity, a cylindrical mold having a cylindrical portion and a concavo-convex portion indicating the name of a stored item to be stored in a container on the surface on the cavity side, and the cylindrical metal An opening forming jig slidably inserted into the cylindrical portion of the mold, and a space for storing the die on the cavity side between the cylindrical mold and the opening forming jig is provided. A die is placed in the space in a blow molding die consisting of a die side die having a substantially triangular columnar cavity in which a formed auxiliary die is placed, and a molten parison made of a soft synthetic resin The mold is supplied and compressed, compressed air is injected, and the parison is expanded and formed, and then an opening is formed by an opening forming jig, and then the mold is opened and removed. Method of producing blow containers.