JPH0285131A - Attaching of label - Google Patents

Abstract

PURPOSE:To firmly attach a label to a molded body without suffering heat shrinkage and loss of its printed clearness by fixing the paper layer of the label consisting of multiple layer resin film in contact with a metal die and introducing a parison of molten polyethylene to the adhesive layer thereof for blow molding. CONSTITUTION:A label 1 comprises a multiple layer film 2 composed of a base material layer A consisting of biaxially stretched film, paper layers B and C consisting of uniaxially stretched film and an adhesive layer D. The adhesive layer D is of nonoriented film of uniaxially stretched resin composition containing a 10-70wt.% of styrene modified ethylene resin obtained from the polymerization of ethylene resin of 100 pts.wt. and styrene of 50-400 pts.wt. and a 90-30wt.% of a copolymer of the ethylene and alkyl ester acrylate of a 80-130 deg.C melting point and/or a copolymer of ethylene and alkyl ester methacrylate. After the paper layer B is fixed in contact with a metal die, a parison of the molten polyethylene of a high density or linear straight chain is introduced to the side of the adhesive layer D and then subjected to blow molding for expansion and attachment to the label 1.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for attaching a label (including a blank) to a hollow body. The hollow body products obtained by the production method of the present invention can be used as shampoo containers, edible oil bottles, motor oil containers, toilet sterilizing solvent containers, decorated rice transplanter floats, toys, surfing boards, and the like.

[Conventional technology]

Conventionally, in order to integrally mold resin molded containers with labels,
A blank or a label is inserted into a mold in advance, and then a container is formed by injection molding, blow molding, differential pressure molding, foam molding, etc., and the container is decorated. Such labels include gravure-printed resin film, offset multi-color printed synthetic paper (for example, Tokko Kokko 1986-40
794, Japanese Patent Publication No. 54-31030, British Patent No. 1,090,059, etc.), or aluminum labels in which polyethylene is laminated on the back side of aluminum foil and gravure printing is performed on the surface of the foil.

However, the manufacturing method of resin-molded containers decorated with the above-mentioned labels and blanks is limited to high-pressure (10
A method of fusing a blank and a molten resin container at a pressure of 0 to 1000 kl/d) produces a product with a good appearance, but differential pressure molding (2 to 7 kl/d) or blow molding (1 to 10 kg)
In the low-pressure molding method such as /d), air escape between the blank and the melting container is not sufficient, and blisters are generated here and there between the container and the blank, which impairs the appearance of the container.

In order to improve blistering during blow molding and differential pressure molding, and to enable multicolor printing on labels, it was proposed to use synthetic paper made of a multilayer structure of stretched films as labels (Japanese Patent Laid-Open No. 58-69015). ) has been done. In this method, a uniaxially stretched polypropylene film containing 8 to 65M of inorganic fine powder is provided as a paper layer on one side of a biaxially stretched polypropylene film base layer, and the paper layer is placed on the opposite side of the paper layer. A label with a wall thickness of 30 to 300 microns, which is a multilayer composite film with a 1 to 10 micron thick film made of polyethylene forming the surface as an adhesive layer, is fixed so that the paper-like layer side of the label is in contact with the mold. This method of attaching a label is characterized in that molten polyethylene is then attached to the adhesive layer side of the label under pressure or reduced pressure, and then the polyethylene is cooled.

This method uses a propylene-based resin, which has a higher melting point than the polyethylene to be molded, as the material resin for the label, so it has the advantage that the phenomenon of wrinkles due to shrinkage does not occur even though the label is a stretched film. .

[Problem to be solved by the invention]

In order to improve the surface gloss of hollow containers, the inner surface of hollow molds is often plated or mirror-finished.

Even with the use of the label described in JP-A-58-69015, some products with blisters appearing on the label of the container of the blow-molded product were found to be 0.6' in size.

This is due to the improved smoothness of the inner surface of the mold.
It seems that the air pocket that was not able to escape between the ball and the label became a blister.

The present invention provides a method for attaching a label to a hollow body, which produces a label-attached hollow body that does not generate blisters or wrinkles due to shrinkage even when using such a mirror-finished or plated mold.

[Specific means to solve the problem]

In the present invention, the roughness of the surface of the adhesive layer of the label is compared to the adhesive layer (back layer) of the label of JP-A-58-69015.
By making the surface rougher and making it easier for air to escape from the surface of the adhesive layer, the formation of air pockets between the hollow product and the label is eliminated, thereby eliminating the occurrence of blisters.

That is, a film made of a resin composition containing a styrene-modified ethylene resin and an ethylene/(meth)acrylic acid alkyl ester copolymer was used as the adhesive layer, and the surface smoothness of the surface of the adhesive layer was determined according to JIS P-8119. The surface is roughened for 1 to i, o o o seconds.

That is, in the present invention, the amount of inorganic fine powder is 5 to 30% by weight and the propylene resin is 95 to 70% by weight! On one side of the biaxially stretched film base layer (A) of the resin composition containing at a ratio of 4:
A paper-like layer (B) of a uniaxially stretched film of a resin composition containing 35 to 65 parts by weight of an inorganic fine powder and 65 to 35 parts by weight of a propylene resin is referred to as a paper-like layer (B). On one side of the opposite base material layer (A), 35 to 30% of inorganic fine powder is applied.
A paper-like layer (C) consisting of a uniaxially stretched film of a lubricant composition containing 65 to 35 parts of a propylene-based resin, and the following resin on the surface of this paper-like layer (C). The thickness of the uniaxially stretched film of the composition is 1 to 1
0 micron, JIS P-8119 surface smoothness is 1
A label with a wall thickness of 30 to 300 microns made of a multilayer resin film having at least four layers of adhesive layer (D) of 000 seconds or less is placed so that the paper-like layer (B) side of the label is in contact with the mold. The label is then fixed with a density of 0 on the adhesive layer 0 side of the label.
．． 945~0.970? /lt/l high density polyethylene or density 0.910-0.965g/cm2
The present invention provides a method for attaching a label, which is characterized in that a molten parison of linear polyethylene is produced, and then the molten parison is expanded by blow molding to attach the label to the sybarison.

Adhesive layer resin composition a) 5 to 5 parts of styrene in the presence of 100 parts by weight of ethylene resin
Styrene-modified ethylene resin obtained by polymerizing 400 parts by weight of 10 to 70 parts by weight b) Ethylene/acrylic acid alkyl ester copolymer and/or ethylene/methacrylic acid alkyl ester copolymer having a melting point of 80 to 130°C Combined 90~
30 weight duck.

The present invention will be explained below using the drawings. FIG. 1 is a sectional view of the label 1. In the figure, A is a base material layer made of a biaxially stretched film, B and C are paper-like layers made of a uniaxially stretched film,
D is an adhesive layer, and the multilayer composite film 2 contains these film layers. 3 is a paper-like layer (printing made on a mark).

Each layer AXB and C of the multilayer composite film may be a single layer or a multilayer, and FIG. 1 shows an example of two layers of paper-like layers B and B2 having different compositions.

The multilayer composite film is prepared by heating the resin composition forming the AN in advance at a temperature lower than the melting point of the propylene resin, for example 1;
A molten film of the resin composition forming the B layer is laminated on one side of the film obtained by double longitudinal stretching, and a resin composition forming the 0 layer and the D layer is laminated on the other side using a separate extruder. Supplying the composition to one die, laminating this within the die,
The coextruded molten sheets are laminated with the layer D facing outward, and then the adhesive layer (■) is melted, the paper-like layer (B) containing a propylene-based resin, and the base material layer are heated (propylene-based) sheets that do not melt. It is obtained by transverse stretching at a temperature below the melting point of the resin.

By stretching, a large number of microvoids (holes) are generated in the base material layer, paper-like /d (B), (C) with the inorganic powder as the core, the density becomes smaller, and the multilayer composite film becomes lighter. . In addition, cracks are generated on the surface of the paper-like layer (B) with the inorganic fine powder as the nucleus, and the adhesion and drying properties of the printing ink are improved. When paper 1 (B) becomes a biaxially stretched oriented film, there are many opportunities for the inorganic fine powder to fall off, and deep cracks formed by -axis stretching may disappear due to further stretching, resulting in offset. Printability is inferior to l-axis oriented film.

Another method for producing a multilayer composite stretched film is to laminate a molten film of a resin for the paper-like layer (BXC) with the same composition on both sides of a longitudinally stretched film of the resin for the base layer (A),
Furthermore, on one of the resin films for paper-like layer C), adhesive 1-
(For ◎, the molten film may be entirely laminated, and then the laminated film may be laterally stretched at a temperature lower than the melting point of the propylene resin but higher than the melting point of high-density polyethylene.

Propylene-based resins include propylene homopolymer, propylene as the main component, and ethylene and butene-11.
hexene-1, pentene-1,4-methylpentene-1
Random or block copolymers of one or more selected α-olefins such as α-olefins such as α-olefins having a crystallinity of 4 times or more, preferably 7 times or more can be used.

As the inorganic fine powder, Merck, diatomaceous earth, heavy calcium carbonate, calcined clay, titanium oxide, tan, barium sulfate, mica, etc. with a particle size of 15 microns or less, preferably fl, 05 to 5 microns are used. .

A portion of the propylene resin (less than 10% by weight) can be polymerized into high-density polyethylene, low-density polyethylene, linear polyenalene, ethylene/vinyl acetate copolymer, ethylene/acrylic acid copolymer, ethylene/acrylic acid alkyl ester copolymer Coalescence, ethylene/methacrylic acid alkyl ester copolymer (alkyl j~ has 1 to 8 carbon atoms), ethylene/methacrylic acid alkyl ester copolymer (alkyl j~ has 1 to 8 carbon atoms)
Metal salt of methacrylic acid copolymer (Zr+Xkl, Ll
, K1Na) or polystyrene may be used instead. Ethylene-based resins having a melting point lower than that of these propylene-based resins are used as a component of the adhesive layer (D) or as an ethylene-based resin before modification. This facilitates the stretching of the propylene resin as the matrix resin of these layers, and increases the lamination strength between each layer.

The content of the inorganic fine powder was higher in the paper layer (A) than in the base layer (A).
Increase the content of B, 0). Since the base layer is biaxially stretched and oriented, the size of the microvoids is also larger than that of the paper-like layer that is stretched and oriented along the -axis. The base material layer has the effect of balancing the vertical and horizontal strength of the label and preventing the label from tearing. Therefore, since the presence of excessive microvoids leads to a decrease in the strength of the base layer, the base layer should contain at most 30 microvoids.

The content of inorganic fine powder in the paper-like layer (BX ('') is
35 to 65 weight tons for good printability and writability,
Preferably, it is used in a large amount of 35 to 52 weight tons. The inorganic fine powder improves the printability and opacity of labels.

Adhesive J40 is made by: a) Suge Ref 5 in the presence of 100 parts by weight of ethylene resin;
Styrene-modified ethylene resin obtained by polymerizing 0 to 4 parts by weight and 10 to 70 parts by weight b) Ethylene/alkyl acrylic acid ester copolymer with a melting point of 80 to 130°C and/-! or ethylene/methacrylic acid alkyl ester copolymer 90
~30 weight section.

This is a non-oriented film made of a uniaxially stretched product of a resin composition.

The styrene-modified ethylene resin of component a) above is prepared by suspending ioo parts by weight of ethylene resin particles in water, adding 50 to 400 parts by weight of styrene dropwise thereto, and polymerizing the suspension in the presence of a polymerization initiator. (Unexamined Japanese Patent Publication No. 56-55)
No. 433, No. 49-5473, No. 50-127965
issue).

Ethylene-based resins include those with a melting point of 80 to 135°C, such as low-density polyethylene, high-density polyethylene, medium-density polyethylene, linear polyethylene, and ethylene/vinyl acetate (vinyl acetate content: 8 weight range or less) copolymer. used.

Even if styrene is used alone, some (less than 50 years)
may be replaced with acrylic acid, methacrylic acid, itaconic acid, maleic anhydride, lower alkyl acrylate (C□-C8) ester, lower alkyl methacrylate (C7-C8) ester, etc.

The ethylene/acrylic acid lower alkyl ester copolymer and the ethylene/methacrylic acid lower alkyl ester copolymer of component b) have a melting point of 80 to 130°C. This is mainly composed of ethylene and lower alkyl acrylate or lower alkyl methacrylate, and whether it is a binary copolymer or a tertiary copolymer, other copolymers are used. 8-fold other vinyl monomers
It may also be a ternary or higher copolymer containing a proportion below a certain amount.

Specifically, ethylene/methyl acrylate copolymer, ethylene/ethyl acrylate copolymer, ethylene/propyl acrylate copolymer, ethylene/acrylic acid with butyl copolymer, ethylene/methyl acrylate/acrylic acid Copolymer, ethylene/methyl acrylate/methacrylic acid copolymer, engineered ethylene/methyl acrylate/itaconic acid copolymer, ethylene/methyl acrylate/maleic anhydride copolymer, ethylene/methyl acrylate/acrylic acid n-
Butyl copolymer, ethylene/n-butyl acrylate/methyl methacrylate copolymer, ethylene/methyl methacrylate copolymer, ethylene/ethyl methacrylate copolymer, ethylene/propyl methacrylate copolymer, ethylene/methacrylate Acid butyl copolymer, ethylene/methyl methacrylate/acrylic acid/methacrylic acid copolymer, ethylene/methyl methacrylate/2-ethylhexyl acrylate copolymer, ethylene/ethyl acrylate/acrylonitrile copolymer, etc. can be used. .

The adhesive layer may contain, in addition to components a) and b), an ethylene resin that is not modified with styrene or an inorganic fine powder.

The amount of component a) in the adhesive layer is FiIO - 70 weight scales, preferably 15 - 50 weight scales. If the weight is less than 10 weight feet, the size of the styrene-modified ethylene resin particles will decrease, and the surface smoothness of the adhesive layer will be poor, making it difficult for air to escape from the surface of the adhesive layer, resulting in hollow bodies. Air may become trapped between the product and the label, causing blisters. In addition, if the weight range exceeds 70, the adhesive force between the hollow product and the label adhesive layer will decrease, and the label will easily peel off during the shrinkage (mold shrinkage) process when the hollow product cools, resulting in poor product appearance. becomes. The amount of component b) in the adhesive layer ranges from 90 to 30 g, preferably from 85 to 50 g.

If each type exceeds 11eIT, the surface roughening effect of component a) is lost and the surface becomes too smooth, resulting in air pockets between the hollow product and the label surface, resulting in blisters.

On the other hand, if the weight is less than 30 times i1, the adhesive force with the hollow body decreases,
When the mold shrinks during the cooling process of the hollow product, the label peels off, resulting in a poor appearance of the product.

Surface smoothness of adhesive layer (D) (JIS P-8119
) is 1 to 1000 seconds, preferably 450 seconds or less, and the average roughness (Ra) of the surface is 0.5 to 5 microns, preferably 1.0 to 3.5 microns.

The lower the apparent melting point of the mixed system of the adhesive layer is than the melting point of the resin of the parison, and the wider the temperature difference, the better the adhesive strength between the hollow container and the label.

However, if only the resin with a low melting point of component b) is used, the adhesive strength is high, but air pockets occur and the appearance of the label is impaired. The surface on the agent layer 0 side is made rough to improve air dissipation during blow molding.

It is also a good idea to roughen the surface by blending 5 to 35 layers of inorganic fine powder into the adhesive layer to prevent air pockets.
The label may also be embossed with adhesive/PI (D) sidetones to prevent air pockets. BEKK index is i, o
If the time exceeds 00 seconds, air dissipation during blow molding will not be sufficient, and air will accumulate between the hollow body and the label, often causing blisters.

/< The high-density polyethylene used as the material for IJson is
Ethylene homopolymer, ethylene/propylene random copolymer, ethylene/butene-1 copolymer, ethylene/butene-1 copolymer,
Propylene/butene-1 copolymer isolinear or branched polyethylene can be used. In addition, as a linear polyethylene, ethylene and butene-1 are combined with L-ethylene and 4-butene.
Methylpentene-1 copolymers are available.

The wall thickness of the label used in the pasting method of the present invention is 30 to 3
00μ, preferably 45 to 150μ, and the thickness Fi of the adhesive layer is 1 to 10μ, preferably 2 to 8μ.

If the label thickness is thinner than 30μ, paper feeding and offset printing will be difficult. If the wall thickness exceeds 300μ, it is economically disadvantageous.

The thickness of the adhesive layer (D) is required to be 1 μm or more so that the film of the adhesive layer is melted by the heat of the molten polyethylene of the parison during blow molding and the molded product and the label are firmly adhered. Moreover, if the amount of gold exceeds 10 μm, the two bells will curl, making offset printing difficult and making it difficult to fix the label to the mold, which is not preferable.

The means for fixing the label to the entire mold can be a conventional electrostatic adhesion method or a reduced pressure (vacuum method).

During blow molding, the label comes into contact with the molten polyethylene parison, but the paper layer side of the label, which is offset printed, is cooled in contact with the mold, so the surface of the paper layer does not melt. That is, multicolored prints do not lose their sharpness.

Further, since the label is attached to the molten polyethylene molded body under pressure and in a state in which the polypropylene of the paper-like layer of the label is not entirely melted, shrinkage of the label is prevented.

The temperature of the parison of molten polyethylene when attaching the label is 1
The temperature is 70 to 230°C. Air blowing pressure during molding is 0.5
~7kz/iG is common.

According to the method for attaching a label of the present invention, a label can be firmly attached to a molded article without problems such as heat shrinkage or unclear printing, even though a stretched film is used. Furthermore, since polyethylene and polypropylene, which are highly water and chemical resistant, are used as the label material, even if the molded product obtained by carrying out the present invention is used as a container for liquids such as shampoo, freezing liquid, motor oil, etc., the label will remain intact. It will not peel off from the main body.

Hereinafter, the present invention will be explained in more detail with reference to Examples.

Example 1 Pure water 14002 and polyvinyl alcohol 141 as a suspending agent were added to an autoclave with an internal capacity of 31 to form an aqueous medium. Yucalon LM-40 (density: 0.910) 700 P was suspended with stirring. Separately, add a polymerization initiator and 0.2 to 1-butylperoxybenzoate. s I) f fs-y-vn735fC
1.105 parts per 100 parts of polyethylene),
This was put into the suspension system, and the temperature inside the autoclave was raised to 9.
The aqueous suspension was heated to 105°C @12 and maintained at that temperature for 4 hours to impregnate styrene containing a polymerization initiator into the low-density polyethylene particles.
Polymerization was carried out by maintaining the temperature for a certain period of time, and the temperature was further increased to 120°C [2
The mixture was maintained at the same temperature for 5 hours to complete one batch.

After cooling, the contents were taken out and washed with water to obtain 1,000 styrene-modified low-density polyethylene particles with a particle size of 3 to 4 m.

Example 2 Polyethylene 700 fK to styrene 1-300
Styrene-modified low-density polyethylene was obtained in the same manner as in Example 1, except that Example 1 was changed to Example 1.

Example 3 Instead of low density polyethylene, the density is 0.960 f/a
Styrene-modified high-density polyethylene gold was obtained in the same manner as in Example 1, except that it was used for high-density polyethylene (EY-40-).

Example 4 A styrene-modified ethylene/vinyl acetate copolymer was obtained in the same manner as in Example 1, except that an ethylene/vinyl acetate copolymer (with a vinyl acetate content of 2.8 to 1 mm) was used instead of low-density polyethylene. Ta.

Example 5 Styrene-modified linear polyethylene was obtained in the same manner as in Example 1, except that linear low-density polyethylene was used instead of low-density polyethylene.

Manufacture example of synthetic paper Example 1 (Mitsubishi Yuka ■ polypropylene [3W/-7'LEN MA-6J (trade name, melting point = 164°C) 81 parts, Mitsubishi Yuka ■Archive high density polyethylene [Yukalon Hard EY -40
J (trade name, melting point = 130°C, density 0.950 f/c
C) 3 parts and 1.5μ particle size of ground calcium carbonate 16
After melt-kneading the composition (A) using an extruder, it was extruded into a sheet from a die at a temperature of 250°C, and the sheet was cooled to a temperature of about 50°C.

Next, this sheet was heated to about 153° C., and then stretched 4 times in the machine direction by making full use of the difference in speed between the roll groups to obtain a -I pongee stretched film of 141°C. Ta.

(2) Separately, polypropylene "Mitsubishi Noprene MA-3J (trade name, melting point = 163°C) 52" parts manufactured by Mitsubishi Yuka ■, polyethylene "Yukaronha" with a density of 0.960 S'/en・-TOE 'Y 40 J 3
1 part and modified carbonate Cal/Rum 45 heavy B part and a set of paraboloids (B,) and polypropylene "MA-3" 47
Part by weight, maleic anhydride from Mitsubishi Yuka ■ (0.5 heavy picture section)
5 parts by weight of grafted polypropylene, 3 parts by weight of high-density polyethylene rEY-40J, and 45 parts by weight of heavy calcium carbonate
Parts by weight of composition (B1) are melt-kneaded using two separate extruders, respectively, and fed to a die of - and laminated within the die. 250℃
It was extruded and laminated so that the B1 layer side was on the outside.

On the other hand, a composition (0 and Example 1
Styrene (105 parts) modified low density polyethylene (
100 parts) 50 parts by weight and density force 0.94 t/cI
A composition of 0'ft with 50 parts by weight of ethylene/methyl acrylate copolymer of I was melt-kneaded in separate extruders,
- After being supplied to a die of a stand and laminated in a gooey, the film was melt-laminated on the other side of the longitudinally stretched film (A) at 250°C with the 0 layer facing outward to obtain a five-layer sheet.

After cooling this five-layer sheet to 60°C,
℃, stretched 7 times in the transverse direction using a tenter, passed through an open chamber set at 165℃ to heat set, cooled to about 60℃, and (Bl
) layers were subjected to corona discharge treatment, and then the ears were slit so that the thickness of each layer (B, /B2/A /C/D) was 5μ/15
A five-layer composite stretched film of μ/70μ/18μ/2μ (total thickness 110μ) was obtained.

The surface smoothness of the 0 layer was 12 seconds, and the average roughness was 1.9 microns.

Table 1 shows the physical properties of this five-layer composite stretched film.

Examples 2 to 5 In Example 1, the styrene-modified ethylene resin obtained in Examples 2 to 5 was used instead of the styrene-modified low-density polyethylene, but the same procedure was followed, with five-layer composite stretching having the physical properties shown in Table 1. Got the film.

Examples 6 to 19 A five-layer composite stretched film having the physical properties shown in Table 1 was obtained in the same manner as in Example 1, except that the composition of the adhesive layer was changed as shown in Table 1.

Examples 20 to 22 In the same manner as in Example 1, except that the width of the die slit was changed and the thickness of the adhesive layer (■) was changed to 0.3 microns, 5 microns, and 8 microns, the physical properties shown in Table 1 were obtained. A five-layer composite stretched film was obtained.

Label fabrication examples 1 to 21 An acrylic antistatic agent solution 5T manufactured by Mitsubishi Yuka ■ was applied to the surface (B,) of the five-layer composite stretched film obtained in the above surface fabrication examples 1 to 21.
-1300 was applied, dried, and then multicolor offset printing was performed on the surface of this B1 layer, and the label was manufactured by cutting 50 pieces vertically and 50 meters horizontally.

[Example, comparative example]

Example 1 - A label measuring 50 m in length and 505 m in width was fixed by a vacuum depressurization action on the paper layer side at 41°C in contact with the mold, and then the label was fixed using a vacuum decompression action.
Mold cavity density polyethylene “Yukaronno-do EY-40J
After extruding into a parison shape at a total temperature of 180°C, and then sandwiching the parison between molds, compressed air at a pressure of 5 kg/cm2 is supplied into the parison to form it, and at the same time, the molded body is cooled by the mold, and the mold is opened. A hollow container (wall thickness: 1 inch) with a body diameter of 60 cm and a height of 200 m was obtained.

Regarding the obtained 20 labeled hollow containers, the number of air entrapments was measured.

The results are shown in Table 1.

The number of air entrapments is measured by the following method.

(1) For each container, 5 points are given for cases where the attached label has no air entrainment, 4 points are given for cases where air entrainment is 10 times or less of the label area, 20t6 points are given for cases where the attached label has no air entrainment, 1 layer or more, 20t6
3 points for air entrainment with an area of less than -204 or more, 2 points for air entrainment with an area of -204 or more and less than 5 layers,
Items with air entrainment in the area of 5 layers or more are classified as 1.
Evaluation was made using the total score of 20 containers.

(Margin below)

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of the label. Patent applicant: Oji Yuka Synthetic Paper Co., Ltd. Agent: Patent Attorney Masahisa Nagatani Agent Patent Attorney Takaya Yamamoto No. figure Fiber Tamanne Natsuai Fui 2 Rem <TJXJ1] 1 (ok) hard Shoulder entry A large layer tightness manga

Claims (1)

[Scope of Claims] 1) On one side of a biaxially stretched film base layer (A) of a resin composition containing 5 to 30% by weight of inorganic fine powder and 95 to 70% by weight of propylene resin. , 35 to 65% by weight of inorganic fine powder and 65 to 65% of propylene resin
A paper-like layer (B) of a uniaxially stretched film of a resin composition containing 35% by weight, and 35% by weight of an inorganic fine powder on one side of the base layer (A) opposite to this paper-like layer (B). ~65% by weight
and a paper-like layer (C
), and on the surface of this paper-like layer (C), a uniaxially stretched film of the following resin composition with a thickness of 1 to 10 microns, JI
A label with a wall thickness of 30 to 300 microns made of a multilayer resin film having at least four adhesive layers (D) with a surface smoothness of 1,000 seconds or less of SP-8119 is attached to the paper-like layer ( The B) side is fixed in contact with the mold, and then the adhesive layer (D) side of the label has a density of 0.945 to 0.9.
A parison is produced by forming a molten parison of high-density polyethylene with a density of 70 g/cm^2 or linear polyethylene with a density of 0.910 to 0.965 g/cm^2, and then performing blow molding to expand the molten parison. A method for attaching a label, characterized by attaching a label. Adhesive layer resin composition a) 50 parts by weight of styrene in the presence of 100 parts by weight of ethylene resin
10 to 70% by weight of styrene-modified ethylene resin obtained by polymerizing ~400 parts by weight b) Ethylene/acrylic acid alkyl ester copolymer and/or ethylene/methacrylic acid alkyl ester copolymer having a melting point of 80 to 130°C 90-30% by weight of polymer. 2), the surface average roughness (Ra) of the paper-like layer (B) is 0.5 to
2. The method of adhesion according to claim 1, wherein the thickness is 5 microns.