JP4433810B2 - Paper container with spout - Google Patents

Description

  The present invention relates to a paper container with a stopper in which a spout stopper is attached to the top of a paper container, and in particular, an internal type in which the spout stopper is attached to the stopper attachment hole from the inside. It relates to a paper container with a stopper.

  As a paper container with a spout that has a spout stopper attached to the top of a paper container, there is currently an internal type paper container with a spout that has a spout stopper attached from the inside to the spigot attachment hole. It is distributed (see, for example, Patent Document 1).

The known literature is shown below.
However, this type of internal-type paper container with a cap is located above the cap member (115) of the spout stopper (110) protruding from the paper container main body. When stress is applied from the direction or from the lateral direction, all the stress is applied to the inner surface (135) of the paper container body and the flange member (114) of the spout stopper. For this reason, there has been a problem that the spout stopper is easily depressed or dropped (see FIG. 4).

  The present invention has been made in view of the above-described problems related to the internal-type paper container with a stopper, and is an internal-type paper container with a stopper that has strong resistance to the depression of the spout stopper. It is an issue to provide.

  According to the first aspect of the present invention, a cap attachment hole is formed on the top of a paper container having a paper base material and a sealant layer made of a thermoplastic resin as an inner layer. In a paper container with a spigot in which a spout stopper having a flange member is fitted and welded from the inside of the paper container, the spout stopper is formed on the inner side of the bottom of the cylindrical member, and a tubular member on which the cap member is covered A partition member that closes the cylindrical member, an opening pull ring member that is erected from the partition member, and a flange that is affixed to the inner surface of the edge of the stopper opening of the paper container formed on the lower outer edge of the tubular member And a member that cannot pass through the cap attachment hole from the outside of the paper container after the respective members are attached to the paper container from the inside of the plug attachment hole. Projects to the outermost surface of the container Characterized in that attached to the plug member, a spout with paper container.

  As described above, according to the first aspect of the present invention, after each member for the spout stopper is attached to the paper container from the inside of the stopper attachment hole, the member that cannot pass through the stopper attachment hole is made of paper. Since it is attached to the cap member that protrudes from the outside of the container to the outermost surface of the paper container, even if stress is applied to the cap member from above, all the stress is received by the outer surface of the paper container and the cap member As a result, the cap member is designed to be larger than the cap attachment hole, so that the spout stopper does not sink into the paper container.

  The invention of claim 2 is characterized in that, in the invention of claim 1, the member is a cap member, and the plug member protruding to the outermost surface of the paper container is a cylindrical member. It is a paper container with a stopper.

  Thus, according to the second aspect of the present invention, the cap member that cannot pass through the cap attachment hole is attached to the cylindrical member that protrudes from the outside of the paper container to the outermost surface of the paper container. Therefore, even if stress is applied to the cap member from above, all the stress is received by the outer surface of the paper container and the cap member, and the cap member is designed to be larger than the cap plug mounting hole. Will not sink into the paper container.

  Further, the invention of claim 3 is the overcap member according to the invention of claim 1, wherein the member covers the cap member, and the plug member protruding from the outermost surface of the paper container is screwed to the cylindrical member. A cap-made paper container characterized by being a cap member.

  Thus, according to the invention described in claim 3, the overcap member that cannot pass through the cap attachment hole is placed on the cap member and attached to the cylindrical member protruding from the outermost surface of the paper container. Therefore, even if stress is applied to the overcap member from above, all the stress is received by the outer surface of the paper container and the overcap member, and the overcap member is designed to be larger than the cap attachment hole. The spout stopper will not sink into the paper container.

  As described above, the paper container with a stopper of the present invention is an internal type outlet plug in which the outlet plug is attached from the inside to the stopper mounting hole, and against the stress applied to the outlet stopper. This is a container that is less prone to depression. Moreover, since a cap part can be enlarged, it can be set as the spout stopper which is easy to open.

  The paper container with a stopper of the present invention will be described in detail below based on one embodiment.

  As shown in FIG. 1, the paper container (1) with a stopper of the present invention is, for example, a paper container (30) having paper as a base material and an inner layer provided with a sealant layer (35) made of a thermoplastic resin. ) Is provided with a spout stopper (10) having a flange member (14) from the inside of the paper container and welded.

  The spout plug (10) includes a cylindrical member (11) that covers the cap member (15), a partition member (12) that is formed inside the cylindrical member and closes the cylindrical member, and stands from the partition member. The opening pull ring member (13) is provided, and the flange member (14) is attached to the inner surface of the mouth end of the paper container formed at the lower outer edge of the tubular member.

  And after attaching each member to the paper container (30) from the inside of the cap attachment hole (31), from the outside of the paper container (30), the member that cannot pass through the plug attachment hole (31), It is characterized by being attached to a plug member projecting to the outermost surface of the paper container.

  As a member that cannot pass through the plug attachment hole (31), the distance from the attachment center is 1 mm or more longer than the plug attachment hole (31) drilled in the paper container. For example, a cap member ( 15) is applicable (see FIGS. 1 and 2).

  More specifically, when the diameter of the plug attachment hole (31) is about 25 mm, the outer diameter of the cap member (15) is preferably about 30 mm.

The method for attaching the spout stopper is, for example, by inserting the spout stopper into the spigot attachment hole (31) from the inner surface side of the paper container (10) filled with the contents on the filling machine and the wall surface of the paper container. After the flange member of the spout stopper is welded by a sealing method such as ultrasonic sealing, the cap member (15) is screwed to the cylindrical member (11).

  FIG. 3: is principal part sectional explanatory drawing which shows another embodiment, and is made into the overcap member (16) which covers a cap member as a member which cannot pass a cap attachment hole. When the diameter of the plug attachment hole is about 23 mm, the outer diameter of the overcap member (16) is preferably about 30 mm.

  The method for attaching the spout stopper in this case is, for example, a method in which a spout stopper that has been previously attached with a cap member is passed from the inner surface side of the paper container (10) filled with the contents through the spout attachment hole (31). After inserting into the stopper mounting hole (31) and welding the wall surface of the paper container and the flange member of the spout stopper by a sealing method such as ultrasonic sealing, the stopper mounting hole ( 31) A non-passable overcap member (16) is attached.

  A feature of the present invention is that, when a stress is applied from the outside in a vertical direction or a lateral direction to a cap member or an overcap member attached from the outside of a paper container, it is made of paper while being an internal type spout stopper. This is because stress is applied to the outside of the container.

  The spout stopper (10), the cap member (15), and the overcap member (16) having such a configuration are generally manufactured by an injection molding method using a thermoplastic resin such as polyethylene or polypropylene. it can.

  In addition, the paper container (30) to which the spout stopper (10) is attached has a paper base and a sealant layer (35) provided on the inner layer. For example, [outer container] polyethylene / paperboard / polyethylene / aluminum foil / Polyethylene terephthalate film / polyethylene (35) [inner side of container] A laminated material having a layer structure such as can be assembled and produced.

An example of the paper container with a stopper of the present invention is shown, (a) is a cross-sectional explanatory view of the main part showing a state after the spout stopper is attached, (b) is a state before the spout stopper is attached. It is a principal part sectional explanatory drawing shown. It is a cross-sectional explanatory drawing which shows the spout stopper attachment part of FIG. 1 in detail. It is sectional explanatory drawing which shows in detail the spout stopper attachment part of another Example of the paper container with a stopper of this invention. It is sectional explanatory drawing which shows the spout stopper attachment part of the conventional paper container with a stopper in detail.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Paper container with a stopper 10 ... Outlet stopper 11 ... Cylindrical member 12 ... Bulkhead member 13 ... Pull ring member 14 ... Flange member 15 ... Cap member 16 ... Overcap member 30 ... Paper container 31 ··· Cap plug mounting hole 35 ··· Sealant layer 110 ··· Outlet cap 114 · · · Flange member
115... Cap member
135 ... Inner surface of paper container

Claims (1)

A cap attachment hole is drilled in the top of a paper container having a paper base material and a sealant layer made of a thermoplastic resin on the inner layer, and a spout stopper having a flange member from the inside is formed in the stopper attachment hole. In a paper container with a stopper plugged and welded,
The spout stopper is a cylindrical member that covers the cap member, a partition member that is formed inside the cylindrical member and closes the cylindrical member, an opening pull ring member that is erected from the partition member, and a cylindrical shape A spout plug having a flange member formed on the lower outer edge of the member and affixed to the inner surface of the edge of the mouthpiece attachment hole of the paper container,
A plug that protrudes from the outside of the paper container to the outermost surface of the paper container after the members are attached to the paper container from the inside of the plug attachment hole. A paper container with a cap attached to a member,
The cap member is an overcap member that covers the cap member, and the cap member that protrudes from the outermost surface of the paper container is a cap member that is screwed to the tubular member. container.

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