JPH078432Y2 - Tube container made of synthetic resin with polygonal barrel - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial field of application" The present invention relates to a synthetic resin tube container.

"Prior art" The body of a synthetic resin tube container is cylindrical,
The lower end is crushed into a plate shape and sealed, and a shoulder member with a mouth and neck, which is separately provided at the upper end of the body, is formed by heating and welding the outer periphery of the shoulder to the upper end of the body, and the body is squeezed into the body. The paste for storage is provided so as to be poured out from the upper end of the mouth and neck.

"Problems to be solved by the invention" Although the conventional tube container body is formed in a cylindrical shape,
Many companies want to make their products unique. Therefore, it is conceivable to form the body part of the tube container and the shoulder member with a mouth and neck part attached to the upper end of the body part in a polygonal shape. However, in this case, the body part is often flexible. It becomes difficult to align the plurality of ridge lines forming the corners of the prism with the head member forming the shoulder member with mouth and neck.

The present invention is characterized in that a positioning protrusion is provided vertically on the inner surface of the body of the tube container so that the above-mentioned alignment can be easily performed when the cross-sectional shape and the shoulder planar shape of the tube container are polygonal. It is a thing.

[Means for Solving the Problem] The body 2 has a polygonal cross-sectional shape in which a positioning projection 9 is vertically provided on the inner surface, and the same polygonal shape as the body is provided to the upper end peripheral edge of the body 2. The peripheral edge of the shoulder member 6 with a mouth / neck portion, which has a planar shape of 1 above, was welded.

[Operation] As shown in FIG. 2, when printing on the outer surface of the body 2,
By fitting the alignment projection 9 into the groove 13 on the surface of the roller 12 and fitting the barrel forming polygonal cylinder 11 to the outer surface of the roller as a printing jig, the polygonal cylinder 11 with respect to the roller at the time of printing. It is possible to prevent slips, and thus print misalignment,
Further, as shown in FIG. 3 to FIG.
When welding the top of the body forming polygonal cylinder 11,
By fitting the alignment projections 9 into the guides 14a and 15a provided on the fitting cylinder 15 and the fitting cylinder 15, the body portion and the shoulder portion can be aligned, and the plate-shaped seal portion at the lower end of the body portion Also in the case of forming 4, the alignment projections are easily aligned with the ridgelines 3 by using the protruding portions of the alignment projections as the ends of the seal portion.

"Example" A tube container 1 made of synthetic resin of the present invention shown in Figs.
Has a regular hexagonal cross-sectional shape of the body portion 2, and ridge lines 3 are vertically provided on the outer surface thereof. The lower end of the body is welded by pressure welding from both front and rear directions to form a plate-shaped seal portion 4, and the upper end of the body is welded with a shoulder member 6 having a mouth / neck portion 5. The shoulder portion 7 also has a regular hexagonal shape in a plane, and the corner portion of the outer edge of the shoulder portion and the corner portion 8 of the inner surface of the upper end portion of the body portion are aligned with each other.
Further, among the corners on the inner surface of the body, the positioning projections 9 are projected from both the left and right corners and are vertically provided over the entire length of the body.
The outer surface of the body may be appropriately printed. The body is squeezable and is made of a highly flexible synthetic resin cylinder. The body may have another polygonal shape, and the protruding piece 9 may be provided at a position other than the corner 8.

In order to form the tube container of the present invention, first, a polygonal cylinder with a projecting piece 9 is extruded in advance, and this is cut into a predetermined size to form a barrel forming polygonal cylinder 11.

In the case of printing, as shown in FIG. 2, the protrusions 9 are inserted into the grooves 13 on the outer surface of the roller 12 serving as a round bar-shaped printing jig, and the projections 9 are fitted tightly. By doing so, the polygonal cylinder is elastically deformed into a cylinder having an inner diameter equal to the outer diameter of the roller. In this state, printing is performed on the outer surface of the cylinder by a known means, and after printing, the roller is removed again. Elastically restored to a polygonal tubular shape.

Next, a shoulder member 6 with a mouth and neck is attached to the upper end of the polygonal cylinder.
For the attachment, as shown in FIG. 3, the mandrel 14 and the fitting cylinder 15 having the same polygonal shape are inserted into the polygonal cylinder 11, and the synthetic resin plate 17 is cut by the cutter 16 from this state. A shoulder member forming plate with a neck portion 18 is placed on the upper end surface of the polygonal tube 11, and the state is moved downward from the mold 19 as shown in FIG. 5 to push up the polygonal tube 11 and the mandrel 14 to raise the mouth and neck. Shoulder member with part 6
And the outer circumference of the shoulder is heat-welded to the upper end of the polygonal cylinder. Guide grooves 14a and 15a are provided on the outer surfaces of the mandrel 14 and the fitting cylinder 15, respectively, and the projecting pieces 9 are fitted into these grooves to form the shoulder member 6 with the mouth and neck. . By doing so, it is possible to prevent the polygonal cylinder 11 from being displaced in the circumferential direction with respect to the mandrel and the fitting cylinder 15, and therefore, the cutter angle of the cut polygonal shape which is positioned with respect to the mandrel and the like is a polygonal cylinder. The corners of the polygonal cylinder and the corners of the shoulder can be made to coincide with each other without being displaced with respect to 11.

The kneaded material is filled into the body through the opening at the lower end of the body with the shoulder member with the mouth and neck attached, and the lower end of the body is sealed after the filling. The seal is welded by crushing the lower end of the body into a plate shape at a predetermined position.

[Advantage of the Invention] In the present invention, the projecting piece 9 is vertically provided on the inner surface of the polygonal body part as described above. Therefore, the projecting piece is used to form the body part, the roller 12 as a printing jig, and the mouth. The mandrel 14, which is used when attaching the shoulder member with a neck, can be accurately aligned with the fitting tube 15 and the like, and thus the cutter 16 and the mold 19 and the body which are aligned with the mandrel and the like. By making it possible to perform the position alignment, it is possible to accurately perform the printing on the body and the position alignment with the shoulder / neck shoulder member 6.

[Brief description of drawings]

FIG. 1A is a half sectional view of the tube container of the present invention, and FIG.
FIG. 2 is an end view of the BB line in FIG. A, FIG. 2 is a perspective view showing a state in which a polygonal cylinder used for the container is fitted to an outer surface of a roller as a printing jig, and FIG. A half sectional view showing a state where a shoulder member forming plate with a mouth and neck is placed, FIG. 4 is a sectional view taken along the line IV-IV in FIG. 3, and FIG. 5 is the upper end of the polygonal cylinder. It is a half cross-sectional view showing a state in which a shoulder member with a mouth and neck is attached. 2 ... Body, 9 ... Protrusion

Claims (1)

[Scope of utility model registration request] 1. A body portion 2 having a polygonal cross section in which an alignment projection 9 is vertically provided on the inner surface, and a planar shape of the same polygonal shape as the body portion is provided to the upper end peripheral edge of the body portion 2. Eggplant, shoulder member with mouth and neck 6
A synthetic resin tube container having a polygonal tubular body, the periphery of which is welded.