JPH0255119A - Preparation of plastic container with label - Google Patents

Abstract

PURPOSE:To certain supply a thermally adhesive film label in a state separated one at a time by containing beads made of a resin and/or an inorg. substance having a specific particle size in either one of a printing layer, a hot melt adhesive layer and an overcoat layer. CONSTITUTION:A label 1 consists of a plastic film base material 2, the printed layer 3 applied to the rear thereof and the hot melt adhesive layer 4 applied to the surface of the printed layer. Beads made of a resin and/or an inorg. substance having a particle size of 0.1-100mum, especially, 10-70mum are contained in any one of the printed layer, the hot melt adhesive layer, the overcoat layer and the center line average roughness (JISB-0601) of the surface of either one of the resin or the beads is set to 0.2-50mum, especially, 0.3-20mum. The content of the beads is pref. set to 3-40% by wt. of the whole of the hot melt adhesive. The beads are composed of a thermoplastic resin, a thermosetting resin or an inorg. substance such as ceramic, glass, silica or sandbar and have the aforementioned particle size and pref. composed of a hollow body or foamed body in general.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for manufacturing a labeled plastic container, and more specifically, to a method for manufacturing a labeled plastic container, and more specifically, a method for preventing adhesion or blocking between labels when stacked. The present invention also relates to a method for firmly adhering a label to a side wall of a container that is being formed by an in-mold label operation.

(Prior Art) Attaching a label indicating the contents to a blow-molded container has an important meaning in terms of packaging technology because it increases the commercial value of the packaged product and stimulates consumers' desire to purchase.

It has been known for a long time to apply labels to blow-molded containers by in-mold label operation.The label to be affixed to the inner surface of the cavity of a molding die is held by means such as a vacuum suction bow, and the label is applied inside the mold. A method of blow-molding plastic balisongs is generally adopted in
2818 Publication).

Also, as a plastic label, a solid polymer layer,
It is also already known to use a laminate of a foam layer and a polymer solution layer (JP-A-60-123333.60-1).
83343 and 60-242490).

(Problems to be Solved by the Invention) As labels for in-mold label operations, labels based on plastic film have advantages such as being able to print on the back side, providing clear images, and having excellent stain resistance. The use of heat-sensitive adhesives, particularly hot melt adhesives, is advantageous in that they utilize the heat of the plastic container wall being molded to effect the bonding.

However, with thermoadhesive film labels that are based on plastic film and use hot melt adhesive as an adhesive, it is often difficult to accurately feed labels one by one during in-mold labeling operations, and the labels do not adhere to the side walls of the container. A problem arises in that a plurality of labels are supplied in a stacked state. The reasons for this include the fact that film labels tend to adhere to each other due to the high smoothness of the film, and hot melt adhesives are sensitive to heat and therefore tend to stick depending on environmental conditions.

Therefore, an object of the present invention is to solve the above-mentioned problems that occur when manufacturing labeled plastic containers by in-mold labeling operations, and to reliably supply heat-adhesive film labels one by one in a separated state. Another object of the present invention is to provide a method for forming a strong adhesive bond with a side wall of a plastic container that is being formed.

Another object of the present invention is to provide a method for smoothly and reliably manufacturing labeled plastic containers by in-mold labeling operations.

(Means for Solving the Problems) According to the present invention, a single layer or multilayer plastic is molded in a mold with a label pasted on the inner surface of the cavity, and a label is attached to the side wall surface of the container to be formed. In a method for manufacturing a labeled plastic container, the label comprises a plastic film layer, a printed layer provided on the inner surface side of the film layer, and a hot melt adhesive layer provided on the printed layer. , a heat-adhesive film label consisting of an overcoat layer provided on the outer surface of the film layer if necessary, in which either the printing layer, the hot melt adhesive layer or the overcoat layer has a particle size of 0.1 to 1.
00 μm resin and/or inorganic beads are included, and the center line average roughness of either surface (, lrS B-
061) in the range of 0.2 to 50 μm, each label is sucked and held from a magazine containing a large number of labels, transferred into a mold, and affixed to the mold surface. A method for manufacturing a labeled plastic container is provided.

(Function) In the present invention, a plastic film layer, a printing layer provided on the inner surface of the film layer, a hot melt adhesive layer provided on the printing layer, and, if necessary, a printing layer provided on the outer surface of the film layer. an overcoat layer provided thereon.

Using thermal adhesive labels, a large number of labels are stacked one on top of the other and stored in a magazine, and the magazine is taken out by suction, held and transferred into a mold, and affixed to the mold surface.

Plastic films are used as the base for labels because they have excellent smoothness, wet strength, and stain resistance. The purpose of providing a printing layer on the inner surface of the film is to allow the printed image to be seen through the transparent film layer.This allows a beautiful and clear printed image to be reproduced, while also preventing contamination of the printing layer during storage and transportation. This is because it also prevents damage. The hot-melt adhesive layer is provided on the printing layer so that the label can be thermally bonded to the side wall of the container using the heat of the side wall of the container that is being formed. Further, an overcoat layer is provided on the outer surface of the plastic film as necessary to protect the film and improve the texture and appearance of the label surface.

In the present invention, the particle size (1,1 to 1
00 μm, especially 10 to 70 μm resin and/or inorganic beads are contained, and the center line average roughness (JISB-0601) of either surface is 0.2 to 50 μm.
In particular, it is a remarkable feature that the thickness is in the range of 0.3 to 20 μm, which allows the thermal adhesive film label to be stacked without impairing its inherent excellent thermal adhesion, smoothness, decorative effect, etc. This eliminates the tendency of stickiness or blocking in the mold, making it possible to reliably feed the sheets separately, and in addition, in the in-mold label operation, the anchoring effect between the container side wall that is being formed provides good adhesion. It can be performed.

The beads used in the present invention are also called spherical fillers, and unlike ordinary fillers, they have a clear spherical particle shape in which each particle is independent (no agglomeration), and are large and have a uniform distribution. It has a sharp particle size. When these beads are included in a coating composition and applied to a film to form a film, protrusions are formed on the surface in the areas where the beads are contained. At this protrusion, the bead may be exposed on the surface, or the bead surface may be covered with hot melt adhesive resin or overcoat resin, but in any case, the center line average A rough surface corresponding to the roughness is formed. Figure 4 of the accompanying drawings shows an enlarged view of the surface structure of the hot melt adhesive of the heat adhesive film label of the present invention, with the gray background showing the hot melt adhesive resin and the black background showing the pieces. , it can be seen that surface protrusions based on beads are formed.

According to the present invention, by forming protrusions or rough surfaces on the surface of the heat-adhesive film label, a sufficient gap is maintained between the overlapping label surfaces, and the labels are closely attached to each other without any gaps. This also prevents mutual adhesion even if the surface of the hot melt adhesive layer becomes somewhat sticky due to environmental changes. In addition, since the beads used in the present invention are spherical particles with the smallest surface area per volume, they do not impede the workability of applying hot melt adhesives, and when labeling in a mold, they are useful for plastic containers being molded. An anchoring effect takes place between the side walls and the resulting adhesion is excellent.

It is important for the particle size of the beads to be within the above-mentioned range in terms of blocking prevention, anchoring effect, and thermal adhesion; if the particle size is smaller than the above-mentioned range, there is no significant effect on blocking prevention (, The effect is also small, and if the particle size is larger than the above range, poor thermal adhesion and label smoothness tend to occur.

The beads used in the present invention may of course have a solid structure, but in order to effectively form a surface protrusion structure or a rough surface structure with a small amount of addition, it is desirable that the beads have a hollow structure or a foam structure. Also, from a similar standpoint, beads should generally have an apparent density within the above range.

The content of beads is preferably in the range of 3 to 40% by weight based on the coating composition (the entire hot melt adhesive), and if it is less than this range, the anti-blocking effect and anchoring effect will be reduced, and if it is less than this range, the content will be lower than this range. If the amount is too large, both are unfavorable in terms of thermal adhesion.

The bead-containing adhesive layer is relatively attached to the label base film.
Although the beads may have various thicknesses, it is preferable to form the protrusions made of beads in a fixed pattern from the viewpoints of anti-blocking effect and anchoring effect. This cell pattern preferably has 10 to 150 lines, particularly 15 to 100 lines per inch (2.5 cm). The cell pattern is formed by using a gravure roll or screen to apply the adhesive layer.

(Preferred Embodiment of the Invention) In FIG. 1 showing an example of a heat-adhesive film label used in the present invention, this label 1 includes a plastic film base 2, a printed layer 3 applied to the back side thereof, and a printed layer 3 applied to the surface of the printed layer. It consists of a hot melt adhesive layer 4. The plastic film substrate 2 is generally uniaxially or biaxially stretched and transparent so that the printed layer 3 is visible through the film layer. The printing layer 3 is so-called back-printed with printing ink, and may be a multiple printing layer such as an image area and a background, or the background may be made of a metal vapor deposited layer. The hot melt adhesive layer 4 is mainly made of a thermoplastic resin that can be thermally bonded by the heat of the side wall of the plastic container that is being thermoformed. In the present invention, the printing layer 3
Alternatively, any of the hot melt adhesive layers 4 preferably contain beads described below.

In FIG. 2 showing another example of a heat-adhesive film label, this label 1 also includes a film base 2, a printing layer 3, and a hot melt adhesive layer 4, as in the case of FIG. An overcoat layer 5 is further provided on the outer surface of the base body 2. This overcoat layer 5 can also contain resin and/or inorganic beads.

The beads used in the present invention are made of thermoplastic resin, thermosetting resin, or inorganic materials such as various ceramics, glass, silica, and shirasu, and have the above-mentioned particle size and preferably have the above-mentioned apparent density. It is. It is generally preferred that these beads consist of hollow bodies or foam bodies.

Hollow or foamed beads of various resins are produced by first producing foamable fine particles of resin using microencapsulation technology, and then foaming the foamable fine particles with steam, hot water, hot air, etc.
Obtained by drying if necessary. These particle structures may be any of single capsules, multinuclear capsules, capsule clusters, and the like. Suitable examples of thermoplastic resins are polyolefins such as polyethylene and polypropylene; acrylic resins such as polystyrene and styrene copolymers; niacrylate/acrylonitrile copolymers; vinylidene chloride or vinyl chloride copolymers; polyamides, etc. Suitable examples of curable resins are phenolic resins, urea resins, and epoxy resins.

Inorganic beads can be made by heating and foaming minerals such as foamed perlite and foamed shirasu, or made of glass-walled capsules like glass balloons.
It may also be a ceramic glass capsule cluster (a spherical object containing a group of closed fine cells). It may also be a spherical silica hollow body, a spherical carbon hollow body, or various spherical ceramic hollow bodies.

These various beads can be used alone or in combination of two or more types. For example, resin beads and inorganic beads can also be used in combination.

In the present invention, examples of the plastic constituting the label substrate include crystalline polypropylene, crystalline propylene-ethylene copolymer, crystalline polybutene-1, crystalline poly4-methylpentene-1, low-5 medium-1, or Polyolefins such as high-density polyethylene: polystyrene,
Aromatic vinyl polymers such as styrene-butadiene copolymer: polyvinyl chloride, halogenated vinyl polymers such as vinylidene chloride resin: acrylonitrile-styrene copolymer,
Nitrile polymers such as acrylonitrile-styrene-butadiene copolymer; Polyamides such as nylon 6, nylon 6.6, rose or metaxylylene adipamide; Polyesters such as polyethylene terephthalate and polytetramethylene terephthalate; Various polycarbonates:
Thermoplastic resins such as polyacetals such as polyoxymethylene can be mentioned. The thickness of the stretched film is generally 20 to 300 μm, particularly preferably 50 to 150 μm.

Further, as a label base material, a plastic base material such as the one described above to which aluminum vapor deposition has been applied or a material obtained by laminating aluminum foil may be used.

As the hot melt adhesive, any hot melt adhesive known per se can be used, but -a
Examples include ethylene-vinyl acetate copolymer (EVA) with a vinyl acetate content of 5 to 40% by weight, ethylene-ethyl acrylate copolymer (EEA) with an acrylic acid content of 5 to 40% by weight, and low Density polyethylene (LDPE), E
Used are ethylene resins such as VA and EEA, and mixtures of these resins with 5 to 30% by weight of tackifiers such as rosins, terpene resins, petroleum resins, and styrene resins. The hot melt adhesive resin is generally preferably provided on the base film with an average thickness of 3 to 40 μm, particularly 5 to 15 μm.

The printing layer can be formed by a method known per se, such as letterpress printing, intaglio printing, gravure printing, lithography or offset printing, silk screen printing, thermal transfer printing, electrophotographic printing, etc. can be formed using a solution of a highly transparent resin such as an acrylic resin, a vinyl chloride resin, or a cellulose derivative.6 In the present invention, beads are dispersed in a hot melt adhesive solution or an aqueous dispersion. to prepare a coating composition,
This composition is applied to a gravure roll with a cell pattern on its surface and then onto a label. As this type of gravure roller, one called an anilox roller or a precision roller is suitably used, and the cell pattern used is one using pyramid-shaped, lattice-shaped, trapezoidal, diagonal, or tortoiseshell-shaped cells. be done. A similar cell pattern is formed when the coating is applied through a screen.

The heat-adhesive film label of the present invention is particularly advantageously used for producing labeled containers by in-mold labeling operations on plastic containers.

In FIG. 3 for explaining the in-mold label operation, in step A, prior to the blow molding of the plastic parson, the blow molds 11a and 11b are in an open state, and a label is placed on the cavity surface 6 of at least one of them. 1 in advance. That is, the cavity surface 6 has a portion that supports the label 1, and this portion is provided with a vacuum suction mechanism 7, and the label 1 is held on the cavity surface 6 by suction. In this case, the label has a positional relationship such that the plastic film base 2 is on the outside and the hot melt adhesive resin layer 4 is on the inside.The application and fixing of the label 1 to the cavity surface 6 is not limited to suction, but
For example, static electricity can also be used.

Next, in step B, the Ninyu plastic parison 9 is extruded from the die 8, the blow molds IIa and 11b are closed, and a pressurized substrate is blown into the closed parison 9.

In step C, the parison expanding in the mold is held on the mold surface and pressed against the label 1 to bring them into close contact, and the expanded parison comes into contact with the mold surface and is cooled, forming the labeled container 10. becomes.

Blow molding can be performed using any blow molding method such as direct blow molding using horizontal rotary blow molding machines or vertical rotary blow molding machines, as well as injection blow molding, two-stage blow molding, sheet forming blow molding, stretch blow molding, etc. It can be done by injection molding, compression molding.

In FIG. 5, which shows a schematic arrangement of an apparatus suitably used for manufacturing the labeled plastic container of the present invention, a large number of blow split molds 11a and 11b are arranged around the turret 12, centered on the axis of the turret 12. It is arranged to be rotatable, and along its circumferential movement path, a labeling area A, a parison extrusion area B, a blow molding cooling area C, a flash recovery area, and a bottle removal area E are arranged in this order. Placed. For ease of understanding, labeling area A, parison extrusion area B, flash collection area and bottle removal area E are shown.
, only one of the blow molds 11a is shown, and the mold parts 11a, llb are provided with a cavity surface 6 of a size and shape corresponding to the outer surface of the container (bottle) to be molded. The parting surfaces of the blow molds 11a and 11b are parallel to the plane of FIG. 5, and can be opened and closed by a cam 19 in a direction perpendicular to this surface.

In the label pasting area A, the split molds 11a and Ilb are in an open state, and this F1! tA is provided with a label magazine 13 and a labeling mechanism, generally designated 14.

As shown in detail in FIG. 6, the label magazine 13 includes a cylindrical accommodating part 15 for accommodating labels l, a label take-out part 16 located at one end of the cylindrical accommodating part, and the other end of the cylindrical accommodating part. Spring member 17 for pressing the label provided on the
A large number of labels 1 are stored in the storage section 15 in a stacked state. The label take-out portion I6 is provided with a small claw (separation claw) 18 for allowing labels to be taken out one by one. In this specific example, label magazines are provided in pairs for the purpose of attaching labels to the front and back surfaces of containers.

The label pasting mechanism 14 includes a suction cup 20 that sucks and holds the label l by vacuum, an arm 21 that supports the suction cup 20, a horizontal reciprocating mechanism 22 that reciprocates the arm 21 in the horizontal direction, and the arm. and a mechanism 24 for rotationally driving the shaft 23 around a shaft 23.

To explain in more detail, the arm 21 supports the suction cup 20 on the radially distal end side, and the radially central end thereof is swingable on an annular sliding member 25 that is slidable along the axis 23. It is connected to the. The mechanism 22 for horizontally reciprocating the annular sliding member 25 includes a cam 26 and a cam follower 27.
When the cam follower 27 moves toward the arm 21, the arm 21 swings and the suction cup 20 moves to the opposite side (outside).

In the specific example shown in FIG. 6, the arm 21 and the suction cup 20 are provided as a pair at 180 degrees with respect to the shaft 23, and are also provided in plane symmetry with respect to a plane perpendicular to the shaft 23. Also, in FIG. 6, when the suction cup 20 located at the upper position is aligned with the label magazines 13a and 13b.

The suction cup 20 in the lower position is a split mold 11a.

11b.

In step 1 in FIG. 6, the upper suction cup 20 is not holding the label l, while the lower suction cup 20 is holding the label l. Further, these suction cups 20 are all attached to the label magazines 13a, 1
3b and the split molds 11a and 11b. From this state, the horizontal reciprocating cam 26 is driven, and the suction cup 20 is driven forward toward the label magazines l'3a, 13b and the split molds 11a, llb, in step 2 of FIG.
, the upper suction cup 20 is attached to the label magazine 13.
a, contacts label l in 13b. In addition, the lower suction cup 20 holds the label l into the split mold 11a.
, 11b. In the specific example shown in FIG. 6, the split molds 11a and llb are moved to close by a small distance by their cam mechanism 19, and the label l is smoothly attached to the cavity surface 6. It looks like this. In step 2 of FIG. 6, a vacuum is applied to the upper suction cup 20 to hold the label 1. Further, the vacuum is cut off to the lower suction cup 20, and the label l is released and held by the suction mechanism (suction mechanism 7 in FIG. 3) in the split molds 11a and 11b. Next, the horizontal reciprocating cam 26 is driven, and each suction cup 20 retreats to the position shown in step 3 in FIG. Step 3
From this point, the shaft 23 rotates 180 degrees, and the suction cup 20 holding the label l reaches the stroke 1 in FIG. 6, after which the same stroke as described above is repeated.

Returning again to FIG. 5, in the parison extrusion zone B, a molten plastic parison 9 is extruded from the die 8. This parison 9 is formed by closing the split molds 11a and 11b, forming a bottom part by pinching off, and blowing fluid into the inside.
In blow molding cooling zone C, labeled plastic container 10
Form into.

In the flash collection area, open the split molds 11a and llb,
The flash is discharged into the flash collection chute 28, and in the bottle take-out area E, the labeled bottle 10 is taken out from the mold 11 by the bottle gripper 29 and discharged into the conveyance mechanism 30.

In the present invention, the thermoplastic resin exemplified for the film substrate for labels is used as the thermoplastic resin constituting the plastic container.

Plastic containers can have a single-layer or multi-layer structure, such as a container made of a single layer of polyolefin or polyethylene terephthalate, or a container made of polyolefin or polyethylene terephthalate as inner and outer layers, with a gas barrier thermoplastic resin interposed between them. Mention may be made of multilayer containers provided as layers. Gas barrier resins include ethylene-vinyl alcohol copolymers with an ethylene content of 50 to 20 mol%, xylylene group-containing polyamides, gas barrier polyesters, high nitrile group-containing polymers, vinylidene chloride resins, etc. Known gas barrier resins can be used.

If there is no adhesion between the inner and outer layers and the intermediate layer, acid-modified olefin resins, various copolyamides,
Adhesive resins such as various copolyesters may be included.

Although blow molding of a molten plastic parison has been explained in FIGS. 5 and 6, stretch blow molding and injection molding of a plastic preform maintained at a stretching temperature,
Furthermore, it should be understood that the present invention also applies to vacuum forming, pressure forming, plug assist forming, etc. of plastic sheets held at melting or stretching temperatures.

The hot-melt adhesive used for the label should be selected based on the type of plastic and processing temperature, and should exhibit thermal adhesive properties at or slightly lower than the melting or stretching temperature of the plastic to be molded. is a matter of course.

(Effects of the Invention) According to the present invention, resin and/or inorganic particles having a particle size of 0.1 to 100 μm are added to any of the printing layer, hot melt adhesive layer, or overcoat layer of a heat-adhesive film label. By using a label that contains beads and has a center line average roughness (JIS B-0601) of either surface in the range of 0.2 to 50 um, it is possible to reliably apply one label to the split mold cavity surface. This makes it possible to supply and affix labeled plastic containers with increased productivity (in addition, it has become possible to manufacture them using in-mold label operations).In addition, this label has excellent adhesion to the side walls of plastic containers. This prevents the label from coming off even under harsh conditions.

(Example) The invention is illustrated by the following example.

Example 1 One side of a 100 μm thick biaxially stretched film made of an ethylene-propylene random copolymer with a melting point of 137° C. was printed, and EVA (vinyl acetate content: 20 μm) was printed on one side.
wt%) and the volume average particle size is 40μ for rosin resin.
A solvent-based hot melt adhesive containing 10% by weight of acrylic hollow beads having an apparent density of 0.5 g/cc was applied using a 45 & 11 lattice type gravure roll and dried. The center line average roughness of the adhesive surface of the obtained label base material was 12 μm.

Next, square labels with a length of 90 mm and a width of 60 mm are punched out from the obtained label base material, about 500 labels are stacked and loaded into the magazine of the in-mold labeling device shown in Fig. 6, and the suction cup is attached to the tip. The labels were taken out one by one from the magazine using the attached label applicator head and placed in the blow mold shown in FIG. In this operation of taking out labels one by one from the magazine using the suction cup, no double labels were taken at all.

Next, through the process shown in FIG. 5, the molding shrinkage rate is reduced to 1.
It was attached to the surface of a bottle made of a 2% ethylene-propylene copolymer with a melting point of 157°C. In this case, the molten resin temperature of the ethylene-propylene copolymer parison is 21
The blow mold temperature was 8°C. Furthermore, the temperature of the label adhesive surface during blow molding reached a maximum of 165°C.

The appearance of the in-mold label bottle thus obtained was very good, and no wrinkles on the label or deformation of the bottle were observed.

Furthermore, the adhesive strength between the label and the bottle was measured and found to be 450 g/15 mm.

Comparative Example 1 In Example 1, when a label without acrylic beads was used as the hot melt adhesive, in the operation of taking out the label from the magazine with a suction cup, 4
% of cases where two sheets were taken out.

Examples 2 to 5 In-mold label bottles were molded in the same manner as in Example 1 using adhesives prepared by adding various bead materials shown in Table 1 to the various adhesive materials shown in Table 1. .

In this case, the labels could be taken out smoothly from the magazine, and there was no occurrence of double taking. Furthermore, the label adhesive strength of the obtained in-mold label bottles is as shown in Table 1, and the adhesiveness was good in all cases.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing an example of the cross-sectional structure of the label of the present invention, FIG. 2 is a diagram showing another example of the cross-sectional structure of the label of the present invention, and FIG. 3 is a diagram showing an in-mold label. FIG. 4 is a photograph showing an enlarged surface structure of the hot melt adhesive for the label of the present invention, and FIG. 5 is a photograph for explaining the operation. FIG. FIG. 6 is a schematic layout diagram showing a labeling mechanism. The reference number l is the label, 2 is the plastic film base,
3 is a printing ink layer, 4 is an adhesive layer, 5 is an overcoat layer, 6 is a cavity surface, 7 is a vacuum suction mechanism, 8 is a die, 9 is a parison, 10 is a container with a label, II is a blow mold, 12 is the turret, 13 is the label magazine, 17
19 is a spring member, 19 is a cam mechanism, 20 is a suction cup, 21 is an arm, 24 is a rotary drive mechanism, 25 is an annular sliding member, 28 is a flush collection sheet, 29 is a bottle gripper, and 130 is a conveyance mechanism.

Claims (1)

[Claims] (1) A method for manufacturing a labeled plastic container, which comprises molding a single layer or multilayer plastic in a mold with a label affixed to the inner surface of the cavity, and bonding the label to the side wall surface of the formed container. , as a label,
A plastic film layer, a printed layer provided on the inner surface of the film layer, a hot melt adhesive layer provided on the printed layer, and an overcoat layer provided on the outer surface of the film layer if necessary. In the heat-adhesive film label consisting of the printing layer, the hot melt adhesive layer, or the overcoat layer, resin and/or inorganic beads having a particle size of 0.1 to 100 μm are contained, and either surface Center line average roughness (JISB-0601) of 0
．． The method is characterized in that labels having a size in the range of 2 to 50 μm are used, and each label is suction-held from a magazine containing a large number of labels, transferred into a mold, and affixed to the mold surface. Method for manufacturing labeled plastic containers.