JP2007008590A - Container for forming in-mold label - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an in-mold label container, wherein a label to be used has transparency, intercepts ultraviolet rays which are the cause of the deterioration of contents, and prevents the deterioration, such as oxidation, resulting from oxygen gas, in the in-mold label molding of a molded container consisting of polypropylene, polystyrene or the like of general-purpose resin. <P>SOLUTION: At least a transparent ultraviolet ray interception layer 34 is prepared on a substrate film 31, and the in-mold label laminated by a heat adhesion resin layer 36 of a transparent gas-barrier layer and the resin of the forming container is prepared on the side section 10a and on the bottom section 10b in the container in accordance with the necessity. The outside diameter of a bottom face label 2 is larger than that B of the bottom section 10b and smaller than that A of the side section 10a, and a circumference section 2a of the bottom face label 2 is formed by falling below. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention belongs to an in-mold label container in which a barrier label can be steadily mounted in a transparent molded container and a container having an ultraviolet blocking property and a gas barrier property can be obtained.

Conventional containers made of general-purpose plastics such as polyolefin resins have water vapor barrier properties, but barrier properties such as ultraviolet rays and oxygen gas that promote chemical changes in contents are not always satisfactory.
In order to provide the above-mentioned molded container with UV-blocking properties, the container is colored, a light-shielding label such as aluminum foil, a metal vapor-deposited film, or printing is attached with an adhesive, etc. In-mold molding was used to provide UV blocking properties.
In addition, in order to give the molded container oxygen gas barrier properties, a laminated sheet containing a transparent saponified ethylene / vinyl acetate copolymer or the like is used for the laminated label, or other materials having oxygen gas barrier properties such as polyester. Multilayer molded containers containing nylon, vinylidene chloride and the like as constituent elements have been used.

However, a molded container with a laminated label of aluminum foil, metal vapor-deposited film, light-shielding film such as printing, and a film that adheres to the resin of the molded product is the content of the various barrier properties of aluminum foil. In terms of product protection, it has storage properties from both the ultraviolet and oxygen aspects, but it has poor merchantability in which the contents cannot be seen.
In addition, when the transparent resin film with other oxygen gas barrier properties is laminated, the contents can be seen, but the contents due to light, especially ultraviolet rays, change (discoloration, discoloration, fragrance, oil oxidation, etc.) There was a problem that the shelf life at the store was reduced.

As an in-mold label container using the above-mentioned label, for example, a thin container body (6) having a bottomed cylindrical shape made of an injection molded product made of synthetic resin, and a body molded of firm paper or synthetic paper A barrier layer (2) formed of a material having a high gas barrier property is laminated on the inner side of the layer (3), and the entire cylindrical wall (7) outer peripheral surface and bottom wall (9) of the container body (6) are configured. ) A synthetic resin container is known which includes a label (1) which covers the entire lower surface and is fixed as an insert material (for example, Patent Document 1).
With such a configuration, the mechanical strength of the entire container can be increased by the strength of the label, and the barrier property can be increased. Here, a label in which a main body layer made of stiff paper or synthetic paper and a barrier layer made of an aluminum foil or a synthetic resin material having a gas barrier property is used as a label.
Japanese Utility Model Publication No. 5-95847

  However, in the conventional gas barrier in-mold label container and the manufacturing method thereof, the in-mold label has a side label corresponding to the side of the container and a bottom label corresponding to the bottom of the container. If they are displaced or turned over, the gas barrier property at the bottom of the container will be significantly reduced. Further, in this case, there is a problem that the gap between the bottom label and the side label is enlarged and the gas barrier property in the gap is also lowered.

The side label has a fan shape, and the bottom label has a circular shape.
Among these, when the both side edges of the side label come into contact with the mold, the side label is turned over, and the resin may flow into the outer side of the side label.
In such a case, there is a problem in that the side label is not arranged at a correct position, and thus a desired barrier property cannot be obtained.
Therefore, the present invention is a molded container made of general-purpose resin such as polypropylene or polystyrene, and is a transparent label in which the contents can be seen from the ultraviolet rays that cause the alteration of the contents, that is, a label having an ultraviolet blocking property and an excellent gas barrier property. (Hereinafter, a layer excellent in ultraviolet blocking property and gas barrier property is collectively referred to as a UV cut barrier layer, and the label thereof is referred to as “UV cut barrier label”). It is what.

In order to solve the above problems, a first feature of the present invention is that, in an in-mold label container having a side part and a bottom part located inside the lower end part, each label is at least an ultraviolet blocking layer or an ultraviolet ray. An in-mold label having a barrier layer and a thermal adhesive resin layer formed from a barrier layer and a gas barrier layer, having a bottom label corresponding to the bottom and a side label corresponding to the side, and a surface of the in-mold label The bottom label has an outer shape (outer diameter) larger than the bottom outer shape (outer diameter) on the arrangement surface of the bottom label.
Moreover, it is an in-mold label container by which the notch part is formed in the lower part of the both-sides peripheral part of a side label. And when the said notch part is the largest, it is an in-mold label container extended even to the part corresponding to the thread twist part of a side part. The second feature of the present invention is an in-mold label container in which the outer shape (outer diameter) of the bottom label is smaller than the side outer shape (outer diameter) on the arrangement surface of the bottom label.
The third feature of the present invention is an in-mold label container in which the peripheral edge of the bottom label rises upward or the peripheral edge descends downward. A fourth feature of the present invention is an in-mold label container in which a bottom label and a side label are connected to each other to form a cup-shaped in-mold label.

According to the present invention, labels excellent in ultraviolet blocking properties and gas barrier properties are formed on the side surface and bottom surface of the container, and the end of the label reaches the end of the container, and the peripheral edge of each label is Formed in close proximity.
Therefore, it has the advantage that it is possible to easily obtain a container equipped with a UV cut barrier label, which has excellent gas barrier properties and ultraviolet blocking properties, and can prevent its chemical alteration even though the contents are visible. is there.

As shown in FIGS. 1 (a), (b) and (c), the in-mold label container 10 of the present invention has a cylindrical part side 10a and a side part 10a on the inner side of the lower end. A bottom portion 10b provided and a flange 10c provided on the upper portion of the side portion 10a are provided.
Among these, the side part 10a consists of the side surface label 1 (FIG. 4 (a)) which contains a UV cut barrier layer, for example by the structure shown in FIG. 6, and the molding resin 7 inject | emitted on the surface of the side surface label 1. . The bottom 10b is composed of a circular bottom label 2 (FIG. 4 (b)) including a UV cut barrier layer and a molding resin 7 injected on the surface of the bottom label 2. A gate hole 6 is formed.

The side surface label 1 and the bottom surface label 2 are mounted in a female die 3 of a mold and are sucked by a vacuum suction hole 8 provided in the female die 3.
Therefore, the side surface label 1 and the bottom surface label 2 are arranged on the outer surface side of the side portion 10a and the bottom portion 10b of the container 10, respectively.
Further, as shown in FIG. 1B, the bottom label 2 has a diameter smaller than the outer shape (outer diameter) A of the side portion 10 a on the bottom label 2 placement surface, and on the bottom label 2 placement surface. Is larger than the outer shape (outer diameter) B of the bottom 10b.
That is, B <the diameter of the bottom label 2 <A.

The side label 1 has a fan shape, and notches 12 and 12 shown in FIG. 5 are formed at lower portions of the side edges 1a and 1a of the side label 1 (lower portions of FIG. 1A).
The cutouts 12 and 12 extend to the portions corresponding to the thread binding portions 11 of the side portions 10a and 10a at the maximum, and therefore the height h of the cutout 12 is from the lower end of the side label 1 at the maximum. The distance approximately coincides with the distance to the upper end of the thread twist portion 11.

Thus, by providing the side label 1 with the notches 12 and 12, when the side label 1 is mounted in the female mold 3, the lower portions of the side edges 1a and 1a of the side label 1 are brought into contact with the inner wall of the female mold 3. The lower part of the side label 1 does not turn over.
For this reason, the molding resin 7 does not wrap around the side label 1 when the side label 1 is turned over, and the side label 1 can be correctly attached to the outside position of the side portion 10a.

Further, the peripheral edge portions 2a, 2a of the bottom label 2 protrude outward from the bottom portion 10b and descend downward.
Thus, by making the diameter of the bottom surface label 2 larger than the outer shape (outer diameter) B of the bottom portion 10b, even if the bottom surface label 2 is slightly displaced when the bottom surface label 2 is mounted in the female mold 3, the bottom surface label 2 Can sufficiently cover the bottom 10b of the container 10.
For this reason, the UV cut barrier property of the bottom part 10b can be exhibited.
Furthermore, the peripheral edge portion 2a of the bottom label 2 protrudes outward from the bottom portion 10b and descends downward, so that the UV cut barrier property at the lower portion (yarn binding portion) 11 of the side portion 10a can be achieved.

  By making the diameter of the bottom label 2 smaller than the outer shape (outer diameter) A of the side portion 10a, the bottom label 2 does not come into contact with the inner wall of the female mold 3 when the bottom label 2 is mounted in the female mold 3. There is no turning and deformation, and the molding resin 7 can be smoothly wound around the thread binding portion 11.

  The molding resin of the present invention is a transparent material such as polypropylene, polyethylene, ethylene / acrylic acid copolymer, ethylene / acrylic acid ester copolymer, ionomer, methylpentene polymer, acrylic resin such as methyl acrylate, polystyrene, polyethylene terephthalate In addition to thermoplastic resins such as polyamide and polyvinyl chloride, thermosetting resins such as unsaturated polyester, melamine resin and urea resin can be used.

For molding the container, a normal thermoplastic resin molding method such as injection molding, pressure molding, vacuum molding, blow molding or injection blow molding can be applied.
And when this is molded, the in-mold label is temporarily attached to the mold so as to contact the molding resin side, and if necessary, the in-mold label is fixed by vacuuming and sucking from the suction hole, In-mold molding, in which the molding resin in a molten state is bonded by heat, is a preferred method.

As shown in FIG. 1C, the UV cut barrier label of the present invention is provided with a picture layer 32 shown in FIG.
Next, the ultraviolet blocking layer 34 is formed by laminating a film including an ultraviolet radiation shielding layer by dry lamination or the like through an adhesive layer, or by applying a coating liquid including an ultraviolet blocking layer.
When in-mold molding with a molding resin, the film is further thermally bonded to the molding resin, and a film of a material with little deformation such as expansion and contraction is dry laminated, extrusion coated, or lacquer coated. An in-mold label (UV cut barrier film) 30 including a transparent ultraviolet blocking layer is formed by forming the heat bonding resin layer 36.

As shown in FIG. 6, the UV cut barrier label 30 used in the present invention forms an ultraviolet blocking layer 34 on a base film 31 provided with a picture layer 32 by printing like the above-mentioned laminated sheet.
Further, a film 35 having a gas barrier property is laminated on the surface of the ultraviolet blocking layer 34 by dry lamination or the like, or a material having a gas barrier property is applied.
When the in-mold molding is performed as described above, a thermal adhesive resin layer 36 is further provided, and cut into a desired size to form an in-mold label made of the UV cut barrier film 30.

As described above, the UV-cut barrier film 30 used in the present invention is basically formed from the base film 31, the ultraviolet blocking layer 34, and further, if necessary, the gas barrier layer 35 and the thermal adhesive resin layer 36. .
However, the order of construction of the layers is not limited as described above, and a film made of the same resin as the molding container is formed on both sides of the UV cut barrier film to prevent curling when used as a label. Can do.
Such a laminated sheet can have the same physical properties as the molded container, such as surface gloss, or by adhering a molding resin to both sides of the laminated sheet, making the laminated sheet a strong bond that does not peel off or fall off from the edges. it can.
In addition, the constitution order of the ultraviolet blocking layer 34 and the gas barrier layer 35 is reversed, the ultraviolet blocking layer is sandwiched between two barrier films for the purpose of preventing elution of the ultraviolet blocking agent, a barrier material is applied, or Use a film that shares the gas barrier film and the printing substrate (for example, vinylidene chloride coat / polyester film, vinylidene chloride coat / stretched polypropylene film), or omit printing, etc. Can be increased or decreased arbitrarily.

The base film is preferably not only suitable for printing but also obtained in a wound form suitable for adhesion processing with other films constituting the laminated sheet, and other stretched or unstretched films of thermoplastic resins and other films may be used. What laminated | stacked material or processed by coating etc. is used preferably.
For example, polyester, polypropylene, polyethylene, polystyrene, polycarbonate, saponified ethylene / vinyl acetate copolymer, acrylic resin, polyamide, polyvinyl chloride, cellulose acetate film, cellophane, and two or more of these films are usually used. Used by laminating by lamination method.

The material that blocks ultraviolet rays can be selected from ordinary ultraviolet absorbers and the like.
The ultraviolet absorber absorbs harmful ultraviolet rays of chemically active 390 nm, preferably 290 nm or less, contained in sunlight, fluorescent lamps and the like.
This ultraviolet absorber converts ultraviolet rays into thermal energy within the molecule.
For example, in addition to benzophenone, benzotriazole, salicylate, and cyanoacrylate, formamidine, hindered amine, and the like may be used alone or in combination.
These ultraviolet absorbers can be kneaded into a raw material resin to form a film, or an appropriate binder can be selected to form a paint and applied to a film.
The ultraviolet blocking layer can also be obtained by applying ultrafine metal oxide particles using an appropriate binder.

The gas barrier layer is formed by coating a suitable base film with polyvinylidene chloride, polyvinyl alcohol or the like, which has a barrier property, or by depositing metal oxide such as ITO, ZnO ₂ , SiOx, or aluminum oxide by vapor deposition or sputtering. There is a film.
Further, a saponified ethylene / vinyl acetate copolymer or an aromatic polyamide can be formed into a film.
And the film which provided these barrier layers is 10-188 micrometers thick, and what can provide a pattern layer by normal gravure printing, flexographic printing, etc. is preferable also from the point which can be used as a printing base material.

Formation of the laminated sheet used in the molded container of the present invention is performed by normal dry lamination using a base film and another film, or sandwich lamination (for example, polyethylene lamination) using a thermoplastic resin as an adhesive resin layer.
Dry lamination adhesives include common polyesters, polyester polyurethanes, polyethers, polyether polyurethanes, two-component reactive adhesives that use vinyl chloride / vinyl acetate copolymers and polyisocyanates as curing agents, and polyethers. One-component reactive adhesives of polyurethane polyisocyanate type and polyester polyurethane polyisocyanate type are used.

When forming an ultraviolet blocking layer or gas barrier layer by coating, the usual coating methods such as gravure coating, gravure reverse coating, rubber roll coating, air knife coating, etc. are determined by the material properties and coating amount. It is done.
The drying and curing is also performed by ordinary heat drying, heat curing, and ionizing radiation.

In principle, the thermal adhesive resin layer of the in-mold label used for in-mold molding can be formed by lamination or melt extrusion coating (including co-extrusion coating) of a film formed of the same material as the container.
In addition, a low-melting-point thermoadhesive resin to which a copolymer of a molding resin or a tackifier is added may be used.
This method is particularly effective when the in-mold label is formed of a stretched film having excellent gloss.
In addition, gravure coating is advantageous for controlling the coating amount, but a gravure screen screen (pinhole) may be formed on the coated surface.
A rubber roll coat is effective for preventing pinholes generated on the coated surface.
The thickness of the heat-adhesive resin layer is 2 to 60 μm, and it can be formed with a relatively thin thickness using a resin varnish coating or coextrusion coating.

Examples of the layer configuration of the in-mold label include the following examples.
(1). 4 layers of CPP 40 μm / adhesive layer / polyethylene terephthalate film 12 μm (printing) / adhesive layer / kneading type UV blocking polyethylene terephthalate film / adhesive layer / CPP 40 μm, provided that CPP is an unstretched polypropylene film ( The same applies below)
(2). CPP 40 μm / adhesive layer / coating type UV blocking polyethylene terephthalate film 12 μm (printing) / adhesive layer / Si Ox vapor-deposited polyethylene terephthalate film / adhesive layer / CPP 40 μm with a film with a gas barrier layer laminated (3). PS 30 μm / adhesive layer / polyethylene terephthalate 12 μm (printing) / adhesive layer / coating-type UV-blocking polyethylene terephthalate film 12 μm / adhesive layer / PS 30 μm in-mold label for polystyrene molded products, where PS is an unstretched polystyrene film ( The same applies below)
(4). Laminated with transparent part such as PS30μm / adhesive layer / coating type UV blocking polyethylene terephthalate film 12μm / adhesive layer / SiOx vapor-deposited polyethylene terephthalate film / adhesive layer / PS30μm UV cut barrier label for polystyrene molded product An in-mold label can be constructed.
In addition, although the film of the said structure is an example which used the unstretched film, the stretched film which consists of resin same as molding resin can also be used as a base film which provides a pattern layer, or a heat bonding resin layer.

When the side surface and bottom surface labels 1 and 2 punched into a predetermined shape are arranged in the female mold 3, the size of curling of the side surface and bottom surface labels 1 and 2 affects the yield of injection molding.
That is, the smaller the curling of the side and bottom labels 1 and 2, the better the yield. In order to reduce the curling of the side and bottom labels 1 and 2, it is preferable that the layer configuration of the side and bottom labels 1 and 2 is a symmetric layer structure as described above with the center layer as the center. .

  Among the layer structure of in-mold labels, the coating layer provided on the vapor deposition layer and the non-absorbing film is extremely thin and can be interpreted as a substantially symmetric layer structure. In-mold labels produced by actual punching also had little curling.

  The above-described exemplary in-mold labels (1) and (3) are in-mold labels having excellent ultraviolet blocking properties, and the above-described exemplary in-mold labels (2) and (4) have ultraviolet blocking properties. It is a UV cut barrier label that combines gas barrier properties.

Next, the manufacturing method of an in-mold label container is demonstrated with reference to Fig.3 (a)-(f).
As shown in FIG. 3A, an in-mold label container 10 is formed by a mold composed of a female mold 3 and a male mold 4, and then the male mold 4 is separated from the female mold 3 so that the male mold 4 and the female mold A label insertion / container removal jig (dummy core) 15 is arranged between the mold 3 and the mold 3 as shown in FIG.
At this time, the container 10 is mounted on the male mold 4 side, and then the dummy core 15 approaches the container 10 mounted on the male mold 4 as shown in FIG.
In FIG. 3C, the side label 1 and the bottom label 2 are adsorbed to the dummy core 15 in advance.
The side surface 1 and the bottom surface label 2 are mounted in the female mold 3 by the dummy core 15 in a later process.
Then, as shown in FIG. 3 (d), the dummy core 15 moves to the female mold 3, and the container 10 adsorbed by the adsorption portion 15 a of the dummy core 15 is pulled away from the male mold 4, and is removed from the mold of the container 10. Is taken out.
Thereafter, the dummy core 15 enters the female mold 3, and the side label 1 and the bottom label 2 adsorbed by the dummy core 15 are delivered into the female mold 3.

Next, as shown in FIG. 3 (e), the dummy core 15 is taken out from the female mold 3, and then the dummy core 15 goes out from between the female mold 3 and the male mold 4 while adsorbing the container 10.
In this case, the side surface label 1 and the bottom surface label 2 in the female mold 3 are sucked and held by the vacuum suction hole 8.
Next, as shown in FIG. 3 (f), the male mold 4 is pressed against the female mold 3, and the molding resin 7 is injected from the gate 5 of the female mold 3.
The molding resin 7 is injected into the cavity between the female mold 3 and the male mold 4 through the gate hole 6 of the bottom label 2.
The molding resin 7 in the cavity presses the side label 1 and the bottom label 2 against the protrusion 3a of the female mold 3 and lowers the peripheral label 2a of the bottom label 2 to the in-mold label container 10 shown in FIG. Configure.

  A second embodiment of the present invention will be described with reference to FIGS.

The in-mold label container 10 shown in FIGS. 2 (a) and 2 (b) is the same as the in-mold label container 10 shown in FIGS. 1 (a) and 1 (b) except that the bottom label 2 is mounted on the male mold 4 side. 10 is substantially the same.
That is, as shown to Fig.2 (a) and (b), the in-mold label container 10 is provided with the side part 10a, the bottom part 10b, and the flange 10c.
Of these, the side portion 10a is composed of the side surface label 1 and the molding resin 7 injected onto the surface of the side surface label 1, and the bottom portion 10b is composed of the bottom surface label 2 and the molding resin 7 injected onto the surface of the bottom surface label 2. It is made up of.

As shown in FIG. 2A, the bottom label 2 constituting the bottom portion 10 b is attached to the lower surface of the male mold 4 and is vacuumed by a vacuum suction hole 9 provided in the male mold 4.
Thus, since the bottom surface label 2 is attached to the lower surface of the male mold 4, it is not necessary to provide the gate hole 6 (see FIGS. 1A and 2A).
Further, as shown in FIG. 2B, the bottom label 2 has a diameter smaller than the outer shape (outer diameter) C of the side portion 10 a on the bottom label 2 placement surface and the bottom portion on the bottom label 2 placement surface. It is larger than the outer shape (outer diameter) D of 10b.
That is, D <the diameter of the bottom label <C.

Further, the peripheral edge 2a of the bottom label 2 protrudes outward from the bottom 10b and rises upward.
Thus, by making the diameter of the bottom surface label 2 larger than the outer shape (outer diameter) D of the bottom portion 10 b, even if the bottom surface label 2 slightly deviates on the lower surface of the male mold 4, the bottom portion 10 b of the container 10 is moved by the bottom surface label 2. Can be covered enough.
For this reason, there exists an effect which improves the gas barrier property of the bottom part 10b.

  As described above, the in-mold label container shown in FIG. 2 is obtained by adding a step of attaching the bottom surface label 2 to the surface of the male die 4 after the step shown in FIG. This is substantially the same as the manufacturing method shown in (a) to (f).

That is, the female mold 3 to which the side label 1 is attached and the male mold to which the bottom label 2 is attached are then pressed, and the molding resin 7 is injected from the gate 5 of the female mold 3.
The molding resin 7 is injected into the cavity between the female mold 3 and the male mold 4, and the molding resin 7 presses the side label 1 against the female mold 3.
At the same time, the molding resin 7 presses the bottom label 2 against the male mold 4 and raises the peripheral edge 2a of the bottom label 2 upward.
In the present embodiment, since the bottom label 2 is mounted on the male mold, only the side label 1 is mounted on the female mold 3 depending on the dummy core 15.

The description of each of the above embodiments shows an example in which the molding resin 7 is injected from the gate 5 after the bottom surface label 2 in which the gate hole 6 is formed is attached to the male mold 3 side (FIG. 1A). , (B)) After the bottom label 2 without the gate hole 6 is mounted on the female mold 3 side, the molding resin 7 may be injected from the gate 5.
In this case, the molding resin 7 injected from the gate 5 pulls the bottom surface label 2 away from the female die 3 side and presses it toward the male die 4 side to raise the peripheral edge 2a of the bottom surface label 2 upward. The in-mold label container 10 formed in this way approximates the container shown in FIGS. 2 (a) and 2 (b).

Although the example in which the molding resin is injected from the gate 5 after the bottom label 2 without the gate hole 6 is mounted on the male mold 4 side is shown (see FIGS. 2A and 2B), the bottom surface having the gate hole 6 is shown. After the label 2 is mounted on the male mold 4 side, the molding resin 7 may be injected from the gate 5.
In this case, the resin 7 injected from the gate 5 enters the cavity of the female mold 3 and the male mold 4 from the gate hole 6.
Thereafter, the molding resin 7 presses the bottom label 2 toward the female mold 3 and lowers the peripheral edge 2a of the bottom label 2 downward.
The in-mold label container 10 molded in this way can form a container similar to FIGS. 1 (a) and 1 (b).

  Furthermore, a side label 1 and a bottom label 2 having a gate hole are connected in advance to prepare a cup-shaped label. After the cup-shaped label is mounted in the female mold 3, a molding resin is formed from the gate 5. 7 may be injected.

As described above, according to the present invention, labels excellent in ultraviolet blocking properties and gas barrier properties are formed on the side and bottom surfaces of the container, and the end of the label reaches the end of the container, and each It is formed in a state in which the peripheral portions of the labels are in close proximity.
Therefore, it is possible to easily obtain a container equipped with a UV cut barrier label, which is excellent in gas barrier properties and ultraviolet ray shielding properties and can prevent chemical alteration even though the contents are visible.

It is a figure which shows the form at the time of shaping | molding of the in-mold label container by this invention. It is a figure which shows the form at the time of the other shaping | molding of the in-mold label container by this invention. It is a figure which shows the flow which manufactures an in-mold label container. It is a figure which shows the side label and bottom face label of an in-mold label container. It is a figure which shows the other side label of an in-mold label container. It is a section schematic diagram showing an example of layer composition of an in-mold label.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Side label 2 Bottom label 2a Peripheral part of bottom label 3 Female type 3a Female projection part 4 Male type 5 Gate 6 Gate hole 7 Molding resin 8, 9 Vacuum suction hole 10 In-mold label container 10a Side part 10b Bottom part 10c Flange DESCRIPTION OF SYMBOLS 11 Yarn twist part 12 Notch part 15 Dummy core 15a Adsorption part of dummy core 12 Notch part 12a Height of notch part 30 UV cut barrier film 31 Base film 32 Picture layer 33 Adhesive layer 34 Ultraviolet blocking layer 35 Gas barrier layer 36 Thermal bonding Resin layer A, C Outer diameter of bottom B, D Inner diameter of bottom

Claims (1)

In an in-mold label molding container made of an injected molding resin having a cylindrical side portion, a bottom portion provided on the inner side of the lower end portion of the side portion, and a flange provided on the upper portion of the side portion,
A side label is disposed on the outer surface of the injected molded resin on the side portion, and a bottom surface label is disposed on the inner surface of the molded resin injected on the bottom portion, respectively.
Further, the side label has a fan shape, and a notch is provided in a lower part of both side edges of the side label, and the notch extends to a part corresponding to the threading part on the side. Arranged,
Further, the bottom label has a circular shape, and its diameter is smaller than the outer diameter of the side on the arrangement surface of the bottom label, and larger than the outer diameter of the bottom on the arrangement surface of the bottom label, Thereby, the peripheral part of the bottom label protrudes outward from the bottom part and is arranged to be raised upward,
Furthermore, the side label and the bottom label are respectively an unstretched polypropylene film or an unstretched polystyrene film, a barrier layer formed of an ultraviolet blocking layer or an ultraviolet blocking layer and a gas barrier layer, and an unstretched polypropylene film or unstretched film. An in-mold label forming container comprising a laminated structure of stretched polystyrene films.

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