JP4121655B2 - Blow tube container - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a tube container having a label attached in a blow mold.
[0002]
[Prior art]
In conventional blow tube containers, a label is attached to the body portion with an adhesive after blow molding, or curved surface printing is applied to the body portion by dry offset printing or the like.
[0003]
[Problems to be solved by the invention]
A blow tube container to which labeling has been applied later has a problem that the label peels off during use, and generally depends on the label material, but generally impairs the proper squeezing of the tube container.
Also, with the curved offset printing on the body using the dry offset method, there is a problem that, unlike label printing, powerful, full-colored beautiful printing, and fine printing of fine characters and patterns are difficult. In addition, since there is no means for printing while avoiding the specific parting line generated in the blow tube container, there is a problem that the decorative effect is further impaired when the parting line is applied to the printing region.
The present invention has been made in view of the above-mentioned problems, and is a blow tube container that is powerful, beautiful, capable of fine printing, and allows surface decoration without being affected by the parting line. For the purpose of provision.
[0004]
[Means for Solving the Problems]
A blow tube container according to the present invention is a tube container formed by a resin layer in which a body part, a shoulder part, and a mouth and neck part constituting a tube container body with a cap removed are formed, and the container body is molded. in that the blow mold, the label is, the body portion and Ri name is integrally thermally bonded on one side at least one of said shoulder portion, said tube container, a polyethylene resin layer from the surface in order And a barrier layer, and a structure in which a polyethylene resin layer is laminated via an adhesive resin layer, and the label is a stretched polypropylene film layer, a printing ink layer, and a polyethylene terephthalate film layer in order from the surface, is to a dry lamination adhesive layer, wherein the aluminum foil layer, a Rukoto such a layer structure composed of laminating the oriented polypropylene film layer
[0005]
DETAILED DESCRIPTION OF THE INVENTION
The present invention will be described in more detail with reference to the drawings.
FIG. 1 is an explanatory view of a blow tube container according to the present invention.
Generally, a blow tube container is formed by winding a screw cap (not shown) around a blow tube container main body made of a single layer or a laminated resin layer in which a body portion 1, a shoulder portion 2 and a mouth and neck portion 3 are continuous. It is. The bottom is heat-sealed horizontally after filling.
The blow tube container 10 according to the present invention is the above-described tube container main body mainly labeled on the body 1 by the method described later while avoiding the parting line 4, and at first glance, the appearance is formed by a conventional label. Although it is not different from the blow tube container pasted, the label 5 is buried in the resin layer of the body portion 1 and almost no step around the label 5 is felt.
Further, as shown in FIG. 1, the label attaching position may be a conical surface of the other shoulder portion 2 of the trunk portion 1.
Since the label 5 applied to the blow tube container 10 according to the present invention is pre-printed in a wound state in accordance with the material of the base film, and in a winding state by a printing method optimal for the pattern and pattern to be printed, Compared with curved surface printing for individual molded products by dry offset after molding, the texture, sharpness, color reproducibility, etc. of the printed finish are excellent. Any known printing method such as gravure printing, flexographic printing, silk screen printing, or the like may be applied as the preprint printing method.
Further, the decoration of the blow tube container 10 by the label 5 according to the present invention is performed by avoiding the parting line 4 by a method to be described later. It is completely avoided that the unevenness of the parting line 4 impairs the decorativeness by printing.
[0006]
FIG. 2 is a process explanatory diagram of in-mold labeling applied to the blow tube container according to the present invention.
First, as shown in (1), a label 5 preprinted in a cavity 21 of a blow molding die 20 (shown in a horizontal cross section) that is a split mold that opens to the left and right is inserted along the inner wall of the cavity 21. In this fixing method, a plurality of vacuum suction holes may be provided on the inner wall of the cavity 21 in accordance with the size of the label 5, and the label 5 may be sucked and fixed by vacuum. You may make it adhere to an inner wall.
The parison 9 is pushed vertically from the extruder between the left and right split molds, and as shown in (2), the hanging parison 9 is sandwiched between the split molds from both sides, and then the high pressure air is applied to the parison 9 whose top and bottom are closed. Blow molding is performed. The parison 9 spreads over the inner wall of the cavity 21 and is thermally bonded integrally with the label 5 temporarily attached to the inner wall. Further, the parting line 4 is formed symmetrically at the parting line generation position 8 at the time of forming, but the position does not cover the inserted label 5.
Then, after cooling, as shown in (3), the split mold is opened and the intermediate product 10 'is taken out. Since the intermediate product 10 'is taken out with the blow molding part 6 connected to the mouth and neck part 3 and the burr 7 on the upper and lower sides, first, the burr is removed, and then the upper and lower parts of the mouth and neck part 3 are trimmed. The blow tube container 10 according to the present invention in which the label is integrally formed with the tube container main body is obtained by separating and reaming the end.
The high-pressure air is blown into the blow pin receiving part (not shown) provided outside the mold part for forming the blow molding part 6 and is blown through the blow pin.
The above blow molding method enables extremely efficient production by adopting a rotary blow molding machine equipped with a plurality of molds 20 rotating like a water wheel around a horizontal axis. That is, in the above-described process, the label 5 is immediately inserted into the mold 20 from which the intermediate product 10 'has been taken out as shown in (1).
[0007]
The deformable tube container according to the present invention can be molded by a blow molding grade of thermoplastic resin such as polyethylene, polypropylene, polyvinyl chloride, and PET, but when transparency, gas barrier property, non-adsorption property, etc. are required. Resins such as Kodapack PET-G6763 and PET13339 manufactured by Eastman Chemical Co., which are blow grades of polyethylene terephthalate (PET) resin, can be suitably used.
In addition, when high barrier properties and non-adsorption properties are required, a multilayer blow molded container provided with a barrier layer or non-adsorption layer may be used. A configuration can be used.
(1) PE / TIE / EVOH / TIE / PE
(2) PE / TIE / PAN / TIE / PE
(3) PE / TIE / EVOH / TIE / PAN
(4) PE / RE / TIE / EVOH
(5) PE / RE / TIE / PAN
(6) PE / RE / TIE / EVOH / TIE / PAN
Where EVOH ethylene vinyl alcohol copolymer layer PAN acrylonitrile copolymer layer PE polyethylene layer TIE adhesive resin layer
Admer (Mitsui Chemicals)
Modic (Mitsubishi Chemical Co., Ltd.), etc. RE A resin layer formed by crushing and reusing burrs generated during molding of a recycled resin layer. A resin layer formed by blending more than one kind of compounds may be provided.
Organic: Benzophenone, benzoalisol, salicylic acid, organic nickel, acrylonitrile, monobenzoic acid, oxalic anilide, cyanoacrylate, triazo inorganic: oxidation of titanium, zinc, iron, cerium, etc. Object [0008]
For the label material, a laminated structure such as OPP / printing ink layer / PET / DL / aluminum foil / OPP in order from the surface is preferable, and at least the back surface of the label 5 has good thermal adhesiveness to the resin of the tube container body. It is necessary that a resin layer is formed.
Here, OPP stretched polypropylene layer PET Polyethylene terephthalate layer DL Dry laminate adhesive layer Further, a rigid film such as PET is used, and the label is punched to a predetermined size by giving the whole body a waist (rigidity) It is necessary to make work 5 excellent in workability when being inserted one by one into the mold. However, if the waist is too high, the extrudability as a tube container is impaired, so that appropriate rigidity is required.
Since the printing ink layer intervenes as an intermediate layer of the laminated material, the ink layer is physically peeled off during use, or is hardly subject to chemical change by contents, etc., and the blow tube container 10 according to the present invention is stabilized. Can be used up to the end.
[0009]
The blow tube container 10 according to the present invention is not limited to the description of the above embodiment, and various modifications can be made without departing from the gist of the present invention.
For example, the shape of the blow tube container 10 according to the present invention is reversed when a part of the mouth-and-neck portion is extremely narrowed as shown in FIG. 3A shown in the variation explanatory diagram of the shape of the blow tube container according to the present invention in FIG. It may have an air bag preventing effect by a valve-stopping action, or may be one in which the shoulder 2 is deformed and the mouth-and-neck 3 is attached obliquely as shown in FIG.
Moreover, the horizontal cross-sectional shape of the trunk | drum 1 does not need to be circular, and may be elliptical.
[0010]
【The invention's effect】
According to the deformed tube container according to the present invention, the label is attached to the body part 1 and the shoulder part 2 of the tube container by the in-mold labeling method, so that a powerful, full-color color reproducibility is good and fine printing is possible. It is possible, and since the parting line is not applied to the printing area, the printing surface is finished beautifully, and the ink layer is provided inside the label laminate, so that the ink layer is physically and chemically Can be protected.
Further, since the label is buried in the body or shoulder of the tube container main body and does not feel the thickness, the touch feeling is good, and by controlling the label rigidity, the tube container with less uncomfortable feeling at the time of squeezing can be provided.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of a blow tube container according to the present invention. FIG. 2 is an explanatory diagram of an in-mold labeling process applied to the blow tube container according to the present invention. Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 trunk | drum 2 shoulder 3 neck part 4 parting line 5 label 6 blow molding part 7 burr 8 parting line generating part 9 parison 10 blow tube container 10 'according to the present invention intermediate molded product 20 in blow tube container molding according to the present invention Mold 21 cavity

Claims (1)

A tube container formed by a resin layer in which a body part, a shoulder part, and a mouth and neck part constituting a tube container body with a cap removed are continuous, and in a blow mold for molding the container body, label, said barrel portion and Ri the name is integrally thermally bonded on one side at least one shoulder, and the tube container, and a polyethylene resin layer in this order from the surface, and the barrier layer, a polyethylene resin The label is composed of layers laminated via an adhesive resin layer, and the label is a stretched polypropylene film layer, a printing ink layer, a polyethylene terephthalate film layer, a dry laminate adhesive layer, and an aluminum foil. blow tube container characterized the layer, the Rukoto such a layer structure composed of laminating the oriented polypropylene film layer.

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