JP2001072118A - Spout forming method for pouring container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily control the quantity of heat for a heat-sealing horn in a process where a filmy member is heat sealed with pressure by the heat-sealing horn to a spout of a pouring container by a method wherein a heat-sealing horn in a dimension approximately the same as the dimension in the planate shape of the filmy member is used. SOLUTION: A filmy member 3 with a non-heat-sealed portion provided at a part corresponding to a spout is placed, with a positioning made, over a liquid passage 2 opened to the top of a nozzle body 1 of a pouring container, and the filmy member 3 is heat sealed with pressure by a heat-sealing horn 4, and thereby the spout is formed. The filmy member 3 is separably stuck to the underside of a tape member 5 having a release paper and a sticking layer, and the non-heat-sealed portion is partially formed at a part which becomes a spout after heat-sealing. The heat-sealing horn 4 to by used is in a dimension in its shape at the underside approximately the same as or bigger than the dimension in the planar shape of the filmy member 3, and thereby control of the quantity of heat for the heat sealing horn 4 becomes easy.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for forming a discharge port of a discharge container such as a cosmetic emulsion, a hand cream, a foundation, a shampoo for shampoo, a rinse, a liquid toothpaste, a mayonnaise, a ketchup, a paste, a paint, and the like.

[0002]

2. Description of the Related Art A film-like member is welded to a discharge port of a discharge container for discharging liquid in a liquid storage chamber from a discharge port in order to make the entire discharge container a closed container in consideration of the hygiene of the content liquid. Conventionally, a method as shown in FIGS. 7 and 8 has been considered as a welding type discharge port forming method for forming a discharge port. A film-like member 103 is positioned and arranged above a liquid flow passage 102 opened on the top surface of the discharge container nozzle body 101, and a heat welding horn 104 is further arranged above the film-like member 103.
Here, cuts 103b are previously formed in the film-shaped member 103 in accordance with the welded shape 103a so as to be detached at the time of welding. However, cuts 103c are formed in a plurality of places. The welding horn 10
The shape of the lower surface of 4 is slightly smaller than the welded shape 103a of the film-shaped member 103. In order to form a discharge port as a non-welded part, a relief recess 104a is formed in a part of the heat welding horn corresponding to the discharge port 101a of the nozzle body 101 adjacent to the liquid flow passage 102. For welding, the heat welding horn 10 is used.
4 and the film-like member 103 is
Weld to 1.

[0003]

However, in the formation of the discharge port of the prior art, the shape of the lower surface of the heat welding horn is slightly smaller than the welding shape of the film-like member. Later, the peripheral edge of the welded shape of the film-shaped member will remain without being welded, and if this peripheral edge is also to be welded, it will be necessary to press-weld again with a heat welding horn having another large lower surface shape. It is becoming. When welding is performed twice in this way, it is necessary not only to improve the accuracy of heat management such as by balancing the amounts of heat of the two heat welding horns, but also to view the appearance of the welded shape of the welded film member. There is a problem that the above variation occurs. Also, the uncut part of the film-shaped member is cut by the droop of the heat welding horn,
After welding, there is also a problem that the uncut portion remains in the shape of a protruding piece on the periphery of the welded shape, and thus the appearance is unsightly.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has a non-welded portion at a discharge port of a discharge container for discharging a liquid in a liquid storage chamber from a discharge port. A method of forming a discharge port of a discharge container by press-welding a film-like member formed by heat with a heat welding horn, and attaching the film-like member to the lower surface of a tape member so that the film member can be peeled off. Along with positioning and delivering between the heat welding horn and the discharge container, the entire surface of the film-shaped member is heated by a heat-sealing horn having a lower surface shape which is the same as or larger than the plane shape of the film-shaped member. The gist of the present invention is a method for forming a discharge port of a discharge container, wherein the discharge port is pressed and thermally welded.

[0005]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. In FIG. 1, a film-like member 3 is positioned and arranged above a liquid flow passage 2 which is opened on a top surface of a discharge vessel nozzle body 1, and a heat welding horn 4 is further arranged above the film-like member 3. Here, the film-shaped member 3 is releasably attached to the lower surface of the tape member 5. That is, the tape member 5 is composed of a release paper 5a and an adhesive layer 5b formed on the lower surface thereof. The film-like member 3 is, specifically, a material in which polyethylene is adhered to the lower surface of PET or PET. Has a two-layer structure composed of an upper layer 3a and a molten layer 3b, such as a sheet having polypropylene adhered to the lower surface of the tape member 5.
Are adhered releasably via an adhesive layer 5b and integrated (see FIGS. 2 and 3).

[0006] The above-mentioned film-shaped member 3 is obtained by adhering PET on the upper surface of an aluminum foil and adhering polyethylene on the lower surface, or adhering PET on the upper surface of the aluminum foil and adhering polypropylene on the lower surface. For example, it may have a three-layer structure including an upper layer, an intermediate layer, and a molten layer.
Furthermore, those in which polyethylene is adhered to the lower surface of PET coated with vinylidene chloride, those in which polypropylene is adhered to the lower surface of PET coated with vinylidene chloride, those in which polyethylene is adhered to the lower surface of PET coated with silicon oxide Alternatively, PET coated with silicon oxide on the lower surface of polypropylene and PET bonded on the lower surface with a hot-melt resin may be used. In short, any material may be used as long as the upper to middle layers of the film member have a higher melting point to heat than the lower layer (melted layer). The rest can be selected appropriately depending on the type of liquid. The material of the molten layer 3b of the film-shaped member 3 is preferably the same as the material of the nozzle to be thermally welded.

Here, on the back surface of the welding layer 3b of the film-like member 3, a portion (to be described later) which becomes a discharge port after thermal welding is formed.
The non-welded portion 3c is partially formed. This non-welded portion 3c
Are the material of the discharge vessel nozzle body 1 and the film-like member 3
Is formed by a method such as coating or printing a resin having a higher melting point with respect to heat than the material of the welding layer 3b. As resins for coating and printing, urethane resins, epoxy resins, polyester resins,
A thermosetting resin such as a UV resin is preferable, but another resin may be appropriately selected as long as it has a high melting point. Further, a non-welded portion 3c may be formed by fixing a different material such as a metal foil plate by a method such as bonding. The non-welded portion 3c can be formed in various other ways. In addition, the film-shaped member 3 is formed with a cut 3d in advance according to the welding shape so as to be detached during welding (FIGS. 3 and 4).

The shape of the lower surface of the welding horn 4 is the welded portion 3e surrounded by the cut 3d of the film-like member 3.
The plane shape is the same as or slightly larger than the plane shape dimension of. In this example, the lower surface of the welding horn 4 is formed as a flat surface having no notch or the like. If the top surface of the discharge vessel nozzle body 1 to be welded has a gentle curved surface, the entire lower surface of the heat welding horn may be formed in a curved shape accordingly. In the welding horn having a flat surface or a curved surface, the amount of heat is uniformly transmitted to the entire surface of the welded portion 3e of the film-like member 3, so that the welded portion 3e to be welded is deformed such as unnecessary shrinkage or wrinkling. This is an effective means for preventing

The formation of the discharge port of the discharge container nozzle body 1 will be described with reference to FIG. First, the film-shaped member 3 attached to the tape member 5 is sent out toward the upper side of the discharge container nozzle body 1. Here, a cut 3d is formed in the film-like member 3, but if the end of the film-like member 3 is pulled down and wound up, the film to be welded 3e is left in the adhesive layer 5b and the remaining film is left. 3f is peeled off from the tape member 5. Next, the tape member to which the welded portion 3e is adhered is attached to the heat welding horn 4 and the discharge vessel nozzle
Then, the heat welding horn 4 is hung down to weld the welded portion 3e to the discharge vessel nozzle body 1. Thereafter, when the welding horn 4 is raised again,
The tape member 5 is peeled off from the upper surface of the welded portion 3e, and the welding is completed in one step, thus forming the discharge port of the discharge container.

FIG. 6 is an enlarged view of a portion A in FIG. The non-welded portion 3c of the film-shaped member 3 is always in close contact with the upper surface of the discharge container nozzle body 1 and shields and seals the liquid circulation hole 2, but in use, it is in accordance with the pressure of discharging the content liquid. It is elastically deformed upward, and the shielding of the liquid flow hole 2 is released to form the discharge port 6.

[0011]

According to the present invention, there is provided a discharge container in which a film-like member having a non-welded portion formed partially at a discharge port of a discharge container for discharging a liquid in a liquid storage chamber from a discharge port is press-welded by a heat welding horn. Forming the discharge port, wherein the film member is releasably attached to the lower surface of the tape member, and the tape member is positioned and delivered between the heat welding horn and the discharge container, and the film member is formed. The entire surface of the film-shaped member is pressed by a heat-welding horn having the same lower surface shape as that of the member or larger than the plane shape of the film-shaped member, so that the heat-welding horn is used. Is easily managed, and there is no effect on appearance of the welded film member.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention.

FIG. 2 is a sectional view showing a state before the tape member and the film-like member of FIG. 1 are attached.

FIG. 3 is a cross-sectional view showing a state after the tape member and the film-like member of FIG. 1 are attached.

FIG. 4 is a bottom view of FIG. 3;

FIG. 5 is a diagram illustrating formation of a discharge port of a discharge container nozzle body.

FIG. 6 is an enlarged view of a portion A in FIG. 5;

FIG. 7 is a diagram showing a conventional method.

FIG. 8 is a diagram showing a conventional method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Discharge container nozzle body 2 Liquid flow path 3 Film member 3a Upper layer 3b Fused layer 3c Non-welded part 3d Cut 3e Welded part 3f Remaining part of film 4 Heat welding horn 5 Tape member 5a Release paper 5b Adhesive layer 6 Discharge port

Claims (1)

[Claims] 1. A heat-sealing horn is used to press-weld a film-like member, in which a non-welded portion is partially formed at a discharge port of a discharge container for discharging liquid in a liquid storage chamber from a discharge port, to form a discharge port of the discharge container. A method of forming, wherein the film member is releasably attached to the lower surface of a tape member, and the tape member is positioned and delivered between the heat welding horn and a discharge container, and the planar shape of the film member The entire surface of the film-shaped member is pressed against the entire surface of the film-shaped member by a heat welding horn having a lower surface shape dimension that is the same as or larger than the planar shape of the film-shaped member, and the heat-sealing is performed. Forming method.