JPH0630664Y2 - Paper liquid container - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a liquid container made of paper, which is frequently used instead of a bottle.

[Prior Art] In this type of paper liquid container, the container body is formed in a tubular shape,
The bottom and top of the container body are bent along a ruled line formed by a pressing die and sealed by heat welding.

[Problems to be Solved by the Invention] The liquid container made of paper is sterilized by immersing it in a disinfecting solution for several seconds before filling the contents, but at the portion where the ruled line abuts the edge of the container body, In some cases, water penetrated from the edge into the inside of the ruled line, and when it was heated by a heater later, over-foaming occurred and pinholes were generated, and the welded seal was incomplete.

This phenomenon occurs because, as shown in FIG. 5, the ruled line a of the container body has a groove shape with a constant width because it is formed by the pressing die as described above, and the front and back surfaces of this ruled line are the container. Since it is covered with the polyethylene layer coated on the main body, moisture does not enter even if it is immersed in the disinfectant as described above, but the portion that abuts the tip b of the ruled line, that is, the edge of the container body. The reason is that since there is no polyethylene layer, water easily enters, and further, the edge portion thereof is crushed by the pressing die and the entanglement of the paper fibers is broken, so that water easily enters.

The present invention prevents moisture from invading from the end of the ruled line when immersed in the disinfectant solution as described above, and causes over-foaming due to the moisture to cause pinholes, resulting in incomplete heat-sealing. It is a technical object to provide a paper-made liquid container capable of preventing the above problems.

[Means for Solving the Problem] As a means for solving this technical problem, the present invention provides a paper liquid container in which a folding ruled line is press-molded in a container body, and the container among the ruled lines is the container. The ruled lines extending toward the upper and lower edges of the main body are summarized as being provided with an appropriate interval left between the tip and the upper and lower edges.

[Operation] Since the ruled line formed by the pressing die does not abut the upper and lower edges of the container body and is stopped just before that, the tip of the ruled line has a closed structure and moisture does not enter from there. Moreover, since the edge of the container body is not crushed by the pressing die, the entanglement of the paper fibers is not broken.

Embodiment Hereinafter, the present invention will be described in more detail with reference to the illustrated embodiment.

In FIG. 1, reference numeral 1 denotes a container body formed in a rectangular tube shape. As in the conventional case, a paper base is used and a polyethylene layer is coated on the front and back surfaces thereof, and an aluminum foil is coated on the inner surface as necessary. A ruled line 2 which is a fold line at the time of boxing is provided at a required place. As shown in FIG. 2, the ruled line 2 is formed by a pressing die in the blank state before box making. In the case of the present invention, the upper and lower edges 1a of the container body 1 among these ruled lines, The ruled line toward 1b, for example 2a, has its tip 2b.
As shown in FIG. 3, it does not abut against the edge 1b of the container body and is stopped in front of it, leaving an appropriate distance 1 (about 2 mm).

In this way, the part where the ruled line is stopped before the edge is
As shown in FIG. 2, A to F on the top side of the container body 1
And G to L on the bottom side.

The container body according to the present invention constructed as described above has a fourth structure.
As shown in the figure, before or after the bottom is welded and sealed, it is sterilized by immersing it in a disinfecting solution before filling the contents.As described above, the ruled line toward the edge of the container body has its tip end. Since it stops before the edge, the tip is not open and the edge is not crushed by the pressing die, so the entanglement of the fiber is not destroyed, and this allows moisture to penetrate into the ruled line from the tip of the ruled line during immersion. Can be prevented in advance. Therefore, when heated by a heater after the immersion, over-foaming does not occur, which causes no defective welding due to generation of pinholes.

Further, since the space provided between the leading end and the edge of the ruled line is extremely small, there is no hindrance to the work of machine folding along the ruled line during box making.

[Effects of the Invention] As described above, according to the present invention, when a folding ruled line is formed by a pressing die in a liquid container made of paper, a ruled line directed to the upper and lower edges of the container body among those ruled lines. The tip of the container is stopped in front of it with an appropriate gap left between it and the edge, so that when it is immersed in disinfectant and disinfected, water does not enter from the tip of the ruled line and the end of the container body Since the edges are not crushed by the pressing die, the entanglement of the fibers is not destroyed, and the effect of preventing the infiltration of moisture and the over-foaming and the incomplete heat-sealing at the time of heating by the heater are exhibited.

[Brief description of drawings]

FIG. 1 is a perspective view of a cylindrical liquid container according to the present invention, FIG. 2 is a perspective view of a blank thereof, FIG. 3 is an enlarged view of a portion I in FIG. 2, and FIG. 4 is a welded and sealed bottom portion. FIG. 5 is a partially enlarged view of a conventional ruled line. 1 ... Container main body, 1a, 1b ... Edge 2, 2a ... Ruled line, 2b ... Tip A ... L ... Place where ruled line is provided with appropriate spacing between the edges

Claims (1)

[Scope of utility model registration request] 1. In a paper liquid container in which a folding line is press-molded on a container body, a ruled line of the ruled line extending toward the upper and lower edges of the container body is between the tip and the upper and lower edges. A liquid container made of paper, characterized in that it is provided at an appropriate interval.