KR20210018644A - Flushproof Sheets for Packaging Tubes - Google Patents

Abstract

The present invention discloses a peel-resistant sheet for packaging a tube using ultrasonic bonding. The peel-resistant sheet for packaging tube using ultrasonic bonding according to a preferred embodiment of the present invention comprises: inner and outer layers made of a polyethylene film to form inner and outer surfaces of a tube; an outer blocking layer made of an aluminum thin film to prevent gas permeation between the inner and outer layers; a gas barrier layer made of a polyamide film that is positioned between the inner and outer layers to prevent gas permeation and has a moisture permeability of 0.1 to 3.0 g/(m^2 · day) and an oxygen permeability of 0.1 to 30 cm2/(m^2 · day); a porous absorption layer of a polypropylene porous film positioned between the inner layer and the gas barrier layer; and an adhesive layer which is integrally bonded by applying a polyurethane adhesive between the inner and outer layers, and the absorption layer. The peel-resistant sheet is expected to prevent damage to a tube container and leakage of contents due to the expansion of the gas inside during a distribution process.

Description

Peel-resistant sheet for packaging tube using ultrasonic bonding and its manufacturing method {Flushproof Sheets for Packaging Tubes}

The present invention relates to a peel-resistant sheet for packaging tubes using ultrasonic bonding consisting of multiple layers to fill pastes and liquid contents of food or cosmetics, and more particularly, a bonding method using ultrasonic vibration and friction heat. This is a phenomenon in which certain chemical components contained in the liquid contents filled in the tube are evaporated due to temperature rise through a simple structural change that significantly increases the performance of the contents preservation by ensuring excellent bonding strength, and adding a porous moisture absorbing layer. In order to prevent the deformation and damage of the packaging tube due to this by suppressing the delamination phenomenon of the various sheets constituting the tube, ultrasonic bonding that can ensure the contents preservation by stably maintaining the allowable internal pressure. It relates to a peel-resistant sheet for packaging tubes used.

In general, flexible packaging tubes are used for packaging ointments of cosmetics or pharmaceuticals, or contents for scent preservation. Looking at the types, it is largely divided into aluminum packaging tubes molded of aluminum and laminate packaging tubes according to the material. do.

The aluminum tube is used for packaging of medicines or contents that require chemical resistance, and usually, an aluminum lump of a predetermined size is molded into a cylindrical shape by an impact compression method, and a seal process and a printing process (convex offset method) It is molded into a finished tube after printing).

On the other hand, the aluminum packaging tube is formed entirely of aluminum except for the cap, so it can maintain high barrier properties to gas and moisture, but it is easily deformed due to the low resilience characteristic of aluminum metal, making it inconvenient to use, and also severely In the case of bending, there is a disadvantage that the bent part is cut or damaged, and the contents are leaked to the outside, which adversely affects the contents preservation. To solve this, a laminate having high resilience while maintaining high barrier property has been developed.

The laminate packaging tube is used as a tube for packaging of various pasty materials such as toothpaste or food and ointment, and is usually produced in a sheet state by bonding a substrate with an adhesive resin by extrusion lamination. It is to make a finished tube through cutting in (sheet) or roll state, printing process and sealing process for cylindrical molding, and sealing seal after filling the final contents. Is to do.

The sheet forming the body in such a laminated packaging tube is a structure in which a number of polymers are stacked, and an inner surface layer made of polyethylene/the first adhesive resin layer made of ethylacrylic acid copolymer/the inner barrier layer made of aluminum thin plate/ethylacrylic acid copolymer. A structure in which a second adhesive resin layer made of a composite/ an outer surface layer made of polyethylene is laminated is commonly used.

In other words, a conventional laminate sheet consists of an inner and outer heat bonding layer and an inner barrier layer, and in the composition of the inner barrier layer, an aluminum thin plate is laminated alone, and an aluminum thin plate and a high strength plastic film with high tensile strength and softening point are used as a reinforcing layer. It is used for the purpose of blocking UV rays, preventing gas permeation, and preventing moisture permeation, and is used for bonding into a circular tube using such a laminate sheet. It is roughly divided into an external heating method using an electric heating heater bar that bonds the inner surface layer, and an internal heating method using high-frequency induction heating and ultrasonic vibrational frictional heat.

On the other hand, laminate packaging tubes are filled with various contents and distributed. Among these contents, cosmetic products contain specific compounds sensitive to temperature, so care is required in handling them. To ensure the safety of the properties of cosmetics, cosmetic stability tests are conducted by setting each section and storage period under a temperature condition of -15℃ to 50℃. The safe storage of cosmetic tube containers is at room temperature 20~30℃ at room temperature. Storage is recommended.

For example, in the case of cosmetics including sterilization, preservative ingredients, sun protection ingredients, hair dye ingredients, etc., they are very sensitive to temperature, and when exposed to high temperatures during storage or transportation, there are many problems in preserving the contents due to the phenomenon that the liquid composition is vaporized. It is a situation that is causing.

In particular, when alcohol components are used as a preservative, alcohol reacts with the polyurethane constituting the adhesive layer of the laminate sheet by evaporating at 78°C or higher, causing a dissolving effect to weaken the adhesive strength. In addition to causing the separation between the lower stacked and disposed substrate layers, damage and deformation of the tube are caused, as well as serious problems such as leakage of the contents to the outside.

As another example, in the case of hair dyes, in order to prevent hydrogen peroxide used as an oxidizing agent from decomposing in its natural state, it is provided in a viscous cream type by mixing with a stabilizer, a thickener, and other raw materials, wherein the hydrogen peroxide is It is characterized by being decomposed into water (H2O) + oxygen (O).

As such, cosmetics that are filled in tube containers and distributed are stored in a place where the temperature is 50℃ or higher during distribution, and as a result, the internal pressure of the tube container increases due to the vaporization of alcohol. The contents of the composition are pushed out, and in particular, the animal and plant oil components contained in the composition are pushed out. These animal and plant oil components pass through the polyethylene film and remain in the barrier layer.At this time, the function of the adhesive layer used for the purpose of film bonding between different species is significantly degraded, causing separation between the layers constituting the laminate layer, and in serious cases In some cases, the content exceeds the allowable pressure of the tube body and causes a serious problem in that the contents are leaked through the sealing part, that is, the joint part of the body.

In particular, exports of cosmetics to many countries around the world including Southeast Asia are increasing in recent years, and most of these cosmetics exports are stored in containers for distribution. In the case of hot weather, the internal temperature of the container rises to a maximum of 65℃~80℃. As it was confirmed that, as shown in FIGS. 1 and 2, there was a serious problem in which the expansion and physical property change of various chemical components contained in the contents resulted in damage and deformation of the cosmetic tube.

Sheet stacking structure Thickness㎛ Moisture permeability
g/(㎡/day) Oxygen permeability
㎠/㎡/day Filling Whether the welding surface is changed -Outer layer
-Blocking layer
-Inner floor

(Between each floor
Adhesive layer placement) PE/AL/PE 310 Less than 0.1 Less than 0.5 Lip tattoo
cosmetics Outer layer/gas barrier layer
: Adhesive layer peeling PE/EVOH/PE 310 0.5 3.3 For dyeing
Oxidant No change PE/VM(AL)PET/PE 310 0.5 4.5 Eye cream
cosmetics Outer layer/gas barrier layer
: Adhesive layer peeling

* Sheet layer material description

① PE: polyethylene film ② AL: Aluminum sheet

③ EVOH: Ethylene vinyl alcohol film ④ VM(AL)-PET: Aluminum-deposited polyester film

⑤ Adhesive layer: Urethane-based (polyurethane adhesive coating)

Table 1 above shows the test results for confirming the presence or absence of changes in the welding surface during storage at a high temperature according to the stacking structure of the sheet of the most common packaging tube according to the prior art, and the test conditions are at 80°C for 5 days. After storage, it was visually checked whether the welding surface was peeled off, and the sheet was selectively subjected to known ultrasonic vibration friction heat bonding and high frequency induction heating bonding.

Referring to <Table 1>, 3 types of tubes having different layer structures were charged with different fillings, stored at 80℃ for 5 days, and exposed to high temperatures.

In the first tube structure, the filling is made of lip tattoo cosmetics, the polyethylene film is used as the inner and outer layers, and an aluminum thin plate gas barrier layer is disposed between them. As a result of the experiment, the adhesive layer that bonds the outer layer and the gas barrier layer to each other is dissolved. Peeling occurred.

In the second tube structure, the filling was an oxidizing agent for dyeing, the polyethylene film was used as the inner and outer layers, and the ethylene vinyl alcohol film was used as the gas barrier layer. As a result of the experiment, no delamination occurred.

Third, under the same experimental conditions, eye cream cosmetics are used as a filling. In a tube structure with polyethylene film as the inner and outer layer and aluminum-deposited polyester film as the gas barrier layer, the adhesive layer applied between the outer layer and the gas barrier layer is The phenomenon of peeling was confirmed.

Sheet stacking structure thickness
㎛ Moisture permeability
g/(㎡/day) Oxygen permeability
㎠/㎡/day Filling Whether the welding surface is changed -Outer layer
-1st fault
-2nd Fault
-Inner floor


(Between each floor
Adhesive layer placement) PE/AL/PA(NY)/PE 360 Less than 0.1 Less than 0.5 Hand cream
/Eye cream Outer layer/1 barrier layer: adhesive layer peeled off PE/PET/PA(NY)/PE 360 0.5 28.0 Cleansing Foam
/Hand cream Outer layer/1 barrier layer: adhesive layer peeled off PE/VM-PET/PA(NY)/PE 360 0.5 4.5 Eye cream
/Sun cream Outer layer/1 barrier layer: adhesive layer peeled off PE/SiO-PET/PA(NY)/PE 360 0.5 3.1 Cleansing Foam
/Sun cream Outer layer/1 barrier layer: adhesive layer peeled off PE/PET/EVOH/PE 360 0.5 2.0 Hand cream
/Sun cream No change

* Sheet layer material description

① PE: polyethylene film ② AL: Aluminum sheet

③ PA(NY): Polyamide film (biaxially stretched nylon film) ④ PET: Polyester film

⑤ VM(AL)-PET: Aluminum-deposited polyester film

⑥ SiO-PET: silica-deposited polyester film

⑦ EVOH: Ethylene vinyl alcohol film ⑧ Adhesive layer: Urethane-based (polyurethane adhesive coating)

As in <Table 1> described above, <Table 2> shows the test results for confirming the presence or absence of changes in the welding surface of the packaging tube having a laminated structure of a general sheet according to the prior art. After storage for 5 days at, it was visually checked whether the welding surface was peeled off, and the sheet was selectively subjected to known ultrasonic vibration friction heat bonding and high frequency induction heating bonding.

Referring to <Table 2>, 5 types of tubes with different layer structures but with a gas barrier layer in a double structure are charged with different packing materials and stored at 80℃ for 5 days and exposed to high temperatures.

The first tube structure was hand cream or eye cream as a filling, polyethylene film as an inner and outer layer, and an aluminum thin plate and polyamide as a gas barrier layer, respectively. The adhesive layer between the layers was dissolved and peeled off.

The second tube structure is made of cleansing foam or hand cream as a filling, polyethylene film as an inner and outer layer, and polyester film and polyamide film as a first layer and a second layer, and as a result of the experiment, the outer layer and 1 It was confirmed that the adhesive layer between the blocking layers was dissolved and peeled off.

The third structure is that the eye cream or sun cream is used as a filling, and the polyethylene film is used as the inner and outer layers, and the evaporated polyester film and the polyamide film are arranged as the first and second layers. Peeling occurred in the adhesive layer between the blocking layers.

The fourth structure is a cleansing foam or sunscreen as a filling material, and a polyethylene film as an inner and outer layer, and a silica deposition film and a polyamide film as a first layer and a second layer. The adhesive layer between the layers was separated, resulting in delamination.

The fifth structure is that hand cream or sun cream is used as a filling, and polyethylene film is used as the inner and outer layer, and polyester film and ethylene vinyl alcohol film are arranged as a first layer and a second layer. No phenomenon occurred.

In summary, in most conventional tube structures, when left at a high temperature for a certain period of time, chemical constituents evaporate and expand, resulting in changes in the properties of the adhesive layer, resulting in damage and deformation of the tube, and leakage of contents. There was a serious downside that followed.

Registered Patent Publication No. 10-0926887 (2009.11.06.),'Flexible tube sheet and tube body manufacturing method'

The present invention has been created to solve the problems of the prior art as described above, and an object of the present invention is to prevent the vaporization of chemical components contained in the contents even when the recommended storage temperature of cosmetics is temporarily exceeded during distribution and storage. When the components of animal and vegetable oils or alcohols pass through the inner layer due to the expansion pressure, they absorb it and prevent the physical properties of the adhesive layer from deteriorating in advance, thereby maintaining stable adhesion for packaging tubes using ultrasonic bonding. It is in providing a sex sheet.

Another object of the present invention is the performance of the tube as before through a simple process change of adding a porous absorbing layer made of a porous film such as microvoid or synthetic paper to which an inorganic neutralizing agent is added to polypropylene, which is inexpensive to manufacture. It is to provide a peel-resistant sheet for packaging tubes using ultrasonic bonding that can prevent the occurrence of delamination of the welding surface that can occur at high temperatures while maintaining the temperature, and economically manufacture and supply.

In addition, another object of the present invention is to provide a peel-resistant sheet for packaging tubes using ultrasonic bonding that enables mass production through the optimal ultrasonic vibration friction heat bonding method, while ensuring uniform and stable bonding strength, thereby improving economy and mass production. It is in providing.

A peel-resistant sheet for packaging tubes using ultrasonic bonding according to a preferred embodiment of the present invention for realizing the above object is a packaging tube using ultrasonic bonding in which a portion of the sheet is overlapped and wound into a cylindrical shape to form a tube. A peeling-resistant sheet for use, comprising: an inner and outer layer made of a polyethylene film as forming an inner surface and an outer surface of a tube; An outer blocking layer made of an aluminum thin film to be positioned between the inner and outer layers to prevent gas permeation; A gas barrier layer made of a polyamide film that is positioned between the inner and outer layers to prevent gas permeation and has a moisture permeability of 0.1 to 3.0 g/(m 2 ·day) and an oxygen permeability of 0.1 to 30 cm 2/(m 2 ·day); A porous absorbing layer made of a polypropylene porous film positioned between the inner surface layer and the gas barrier layer; An adhesive layer formed by applying a polyurethane adhesive between the inner and outer layers and the gas barrier layer and the absorption layer to be integrally bonded; Including; 45.3% of the inner layer, 22.2% of the outer layer, 3.3% of the outer barrier layer, It is characterized in that the porous absorption layer is 22.2%, the gas barrier layer is 4.2%, and the adhesive layer has a composition ratio of 2.8%.

In the peel-resistant sheet for packaging tubes using ultrasonic bonding according to another preferred embodiment of the present invention, in the peel-resistant sheet for packaging tubes using ultrasonic bonding in which a portion of the sheet is overlapped and wound into a cylindrical shape to form a tube , Inner and outer layers of polyethylene film forming the inner and outer surfaces of the tube; An outer blocking layer made of a vapor-deposited aluminum film positioned between the inner and outer layers to prevent gas permeation; A gas barrier layer made of a polyamide film that is positioned between the inner and outer layers to prevent gas permeation and has a moisture permeability of 0.1 to 3.0 g/(m 2 ·day) and an oxygen permeability of 0.1 to 30 cm 2/(m 2 ·day); A porous absorbing layer made of a polypropylene porous film positioned between the inner surface layer and the gas barrier layer; An adhesive layer formed by applying a polyurethane adhesive between the inner and outer layers and the gas barrier layer and the absorption layer to be integrally bonded; Including; 45.3% of the inner layer, 22.2% of the outer layer, 3.3% of the outer barrier layer, It is characterized in that the porous absorption layer is 22.2%, the gas barrier layer is 4.2%, and the adhesive layer has a composition ratio of 2.8%.

The peel-resistant sheet for packaging tubes using ultrasonic bonding according to another preferred embodiment of the present invention is applied to a peel-resistant sheet for packaging tubes using ultrasonic bonding in which a portion of the sheet is overlapped and wound into a cylindrical shape to form a tube. In the inner and outer layers of a polyethylene film forming the inner and outer surfaces of the tube; An outer barrier layer made of an aluminum oxide coating film positioned between the inner and outer layers to prevent gas permeation; A gas barrier layer made of a polyamide film that is positioned between the inner and outer layers to prevent gas permeation and has a moisture permeability of 0.1 to 3.0 g/(m 2 ·day) and an oxygen permeability of 0.1 to 30 cm 2/(m 2 ·day); A porous absorbing layer made of a polypropylene porous film positioned between the inner surface layer and the gas barrier layer; An adhesive layer formed by applying a polyurethane adhesive between the inner and outer layers and the gas barrier layer and the absorption layer to be integrally bonded; Including; 45.3% of the inner layer, 22.2% of the outer layer, 3.3% of the outer barrier layer, It is characterized in that the porous absorption layer is 22.2%, the gas barrier layer is 4.2%, and the adhesive layer has a composition ratio of 2.8%.

As a preferred feature of the present invention, the porous absorption layer has a porosity of 15 to 30%, and a pore size of 15 to 20 μm.

As another preferred feature of the present invention, the inner and outer layers have a thickness of 70 to 220 μm, the porous absorbing layer has a thickness of 80 to 150 μm, the gas barrier layer has a thickness of 8 to 12 μm, and the adhesive layer is polyurethane It is formed by applying an adhesive of 2.5g/m2 to 4.0g/m2.

A method for manufacturing a peel-resistant sheet for packaging tubes using ultrasonic bonding according to a preferred embodiment of the present invention for realizing the above object is packaging using ultrasonic bonding in which a portion of the sheet is overlapped and wound into a cylindrical shape to form a tube. A method for manufacturing a peel-resistant sheet for a tube, comprising: providing an inner and outer layer comprising inner and outer layers of polyethylene film as forming an inner and outer surface of the tube; A step of providing an outer blocking layer disposed between the inner and outer layers to prevent gas permeation, and disposing an outer blocking layer made of one of an aluminum thin film, a deposited aluminum film, or an aluminum oxide coating film; It is located between the inner and outer layers to prevent gas permeation. A gas barrier layer made of polyamide film having a moisture permeability of 0.1 to 3.0 g/(m²·day) and an oxygen permeability of 0.1 to 30 cm 2/(m²·day) Providing a gas barrier layer to be disposed; A step of providing a porous absorption layer disposed between the inner surface layer and the gas barrier layer to arrange a porous absorption layer made of a porous polypropylene film; And an adhesive layer applying step of applying an adhesive layer made to be integrally bonded by applying a polyurethane adhesive between the inner and outer layers, the gas barrier layer and the absorption layer;, the inner layer 45.3%, the outer layer 22.2%, the outer layer The barrier layer is 3.3%, the porous absorption layer is 22.2%, and the gas barrier layer is 4.2%, and the adhesive layer is bonded by contacting an ultrasonic vibration horn to the laminated body to have a composition ratio of 2.8%, but a downward pressure of 3.0 bar. Bonding time 0.5~1 sec. It is characterized in that it consists of a step of completing the laminate into a single sheet with a vibration frequency of 14,000 to 16,000 times per second and a cooling time of 0.7 to 1.2 seconds.

The peel-resistant sheet for packaging tubes using ultrasonic bonding according to the present invention reduces the performance of the adhesive layer due to a phenomenon in which chemical components contained in the contents evaporate or expand due to a rapid increase in storage temperature. As it can be prevented, the internal pressure of the tube can be stably maintained within the allowable pressure, and as a result, damage to the tube container and leakage of contents due to the expansion of the internal gas can be prevented in advance. A useful effect is expected.

In particular, economical manufacturing and supply are possible through a simple process change in which a porous absorbing layer made of a porous film such as a hollow fiber (microvoid) or a known synthetic paper added with an inorganic neutralizing agent is added to polypropylene with low manufacturing cost. As the preservation of the contents can be improved and the temperature conditions required for transportation and storage can be widened, an industrial useful effect is expected to increase the competitiveness of products.

That is, the present invention has an effect of preventing the phenomenon of lamination and separation of the welded surface occurring during high temperature storage while maintaining the function of the tube.

Features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings. Prior to this, terms or words used in the present specification and claims should not be interpreted in a conventional and dictionary meaning, and the inventor may appropriately define the concept of the term in order to describe his or her invention in the best way. It should be interpreted as a meaning and concept consistent with the technical idea of the present invention based on the principle that there is.

1 and 2 are photographs for explaining the bursting phenomenon of a tube made of a sheet for packaging tubes according to the prior art.
3 is a view for explaining the structure of a peel-resistant sheet for packaging tubes using ultrasonic bonding according to an embodiment of the present invention;
4 is a view for explaining a laminated structure of a peel-resistant sheet for packaging tubes using ultrasonic bonding according to another embodiment of the present invention.
Figure 5 is a photograph of the manufacturing equipment for the peel-resistant sheet for packaging tube using ultrasonic bonding according to the present invention.
6 is a photograph showing an ultrasonic vibration horn in a manufacturing facility for a peel-resistant sheet for packaging tubes using ultrasonic bonding according to the present invention.

Hereinafter, a configuration and operation of an embodiment of the present invention will be described in detail with reference to the accompanying drawings. However, it is not intended to limit the present invention to a specific disclosed form, and it should be understood to include all changes, equivalents, and substitutes included in the spirit and scope of the present invention. In the present application, terms such as "comprise" or "have" are intended to designate the existence of features, steps, actions, components, parts, or combinations thereof described in the specification, but one or more other features, steps, and actions It is to be understood that the possibility of the presence or addition of, components, parts, or combinations thereof is not preliminarily excluded. That is, throughout the specification, when a certain part "includes" a certain constituent element, it means that other constituent elements may be further included instead of excluding other constituent elements unless otherwise stated.

In addition, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning of the related technology, and should not be interpreted as an ideal or excessively formal meaning unless explicitly defined in this application. Does not.

Here, repeated descriptions, well-known functions that may unnecessarily obscure the subject matter of the present invention, and detailed descriptions of configurations are omitted in order not to obscure the subject matter of the present invention. Embodiments of the present invention are provided to more completely explain the present invention to those with average knowledge in the art. Accordingly, the shapes and sizes of elements in the drawings may be exaggerated for clearer explanation.

Hereinafter, a peel-resistant sheet for packaging tubes using ultrasonic bonding according to the present invention will be described with reference to the accompanying drawings.

3 is a view for explaining the structure of a peel-resistant sheet for packaging tubes using ultrasonic bonding according to an embodiment of the present invention.

In the drawing, the inner and outer surfaces of the tube are formed, and are located between the inner and outer layers 10 and 20 made of polyethylene having a thickness of 70 to 220 μm, and gas permeate. A gas barrier layer 30 that prevents protection, a porous absorbing layer 50 made of a porous film positioned between the inner surface layer 10 and the gas barrier layer 30, each of the inner surface layers 10, and the gas barrier layer (30), a peel-resistant sheet for packaging tubes using ultrasonic bonding having a laminated structure consisting of an adhesive layer (b) that integrally bonds them by applying an adhesive between the porous absorbing layer 50 and the outer surface layer 20 is shown. Has been.

A configuration of a peel-resistant sheet for packaging tubes using ultrasonic bonding according to an embodiment of the present invention will be described with reference to the drawings above.

First, the peel-resistant sheet for packaging tubes using ultrasonic bonding according to the present invention is located on the inner surface of the tube when it is formed into a cylindrical tube, and forms an inner surface layer 10 and the outer surface of the tube to which the contents are directly contacted. There is an outer layer 20 on which various phrases and patterns are printed, and a gas barrier layer that prevents gas from passing between the inner and outer layers 10 and 20 to maintain good content preservation ( 30), and a porous absorbing layer 50 that acts to absorb moisture to prevent remarkably weakening the peel strength of the interlayer adhesive layer due to vaporization of alcohol contained in the cosmetic contents during long-term storage and transportation at a high temperature of 50°C or higher. Each layer is integrally bonded by an adhesive layer (b) formed by applying an adhesive.

The inner and outer layers 10 and 20 constitute the inner and outer surfaces of the tube, which is a container for filling the contents, and are composed of a polyethylene film having a thickness of 70 to 220 μm.

These inner and outer layers 10 and 20 may be implemented by a known technique, so a detailed description thereof will be omitted.

The gas barrier layer 30 is an element that is positioned between the inner and outer layers 10 and 20 to prevent gas permeation. A ceramic film or an aluminum thin film or a film on which aluminum is deposited, or a moisture permeability of 0.1 to 3.0 g/(m 2 · day) and an oxygen permeability of 0.1 to 30 ㎠/(㎡·day) of a synthetic resin film may be used.

The synthetic resin film may be any one of a polyamide film, a polyester film, an ethylene vinyl alcohol copolymer film, and a polypropylene film.

It is preferable that the gas barrier layer 30 has a thickness of 8 µm to 12 µm, and a detailed description thereof is omitted because it may be performed by a known technique.

The porous absorption layer 50 is a porous film positioned between the inner surface layer 10 and the gas barrier layer 30 to have a porosity, and its main component is made of polyethylene, polypropylene, polystyrene, polyester, etc. And inorganic compounds are added to form a film having voids. In the present invention, polyethylene, polypropylene, polystyrene, polyester, etc., having a thickness of 80 μm to 150 μm and forming a porous layer by a stretching manufacturing process, are used as main components. One film is used.

To further explain, the porosity of the porous absorbing layer 50 in the present invention is 15 to 30%, which is the most ideal, and the porosity generated by stretching in the manufacturing process is confirmed through the experimental results, and as a preferred example, the porosity of 15 to 30% I propose to have. In addition, the average pore size is 15 to 20 μm, preferably 17 μm, which refers to pores in which the inorganic compound acts.

That is, the specific gravity of polypropylene (PP) is 0.9 (g/), but the specific gravity of the state in which the porous layer of the stretched film is formed by the addition of inorganic compounds is 0.75 (g/), which is the porosity for application to the present invention. Film It can be applied as a film with an appropriate porous absorption layer.

On the other hand, the tube with the additional porous absorption layer 50 maintains the function of the tube container at room temperature stably as before, and prevents lamination and separation of the welded surface, which is the interlayer joint of the sheet, even when stored for a long time at high temperature.

In other words, when a tube container filled with a chemical component is left at a high temperature for a long time, the chemical component of the content vaporizes and expands, passing through the inner surface layer 10, and eventually bonding the gas barrier layer 30 and the outer layer. In the present invention, the porous absorption layer 50 absorbs the chemical component that has passed through the inner surface layer 10 and prevents it from passing through the gas barrier layer 30, thereby preventing the sheet from interlayer separation. It will be prevented.

The adhesive layer (b) is integrally bonded by applying an adhesive between the inner and outer layers 10 and 20, the gas barrier layer 30, and the porous absorption layer 50, and the adhesive layer (b) is made of a curable urethane resin. It is formed by applying 2.5g/㎡~4.0g/㎡ of the adhesive.

This adhesive layer (b) is a non-peelable composition, that is, a curable adhesive having a property that the laminated sheet is not separated by external stress applied to the tube container including bending, folding, etc., and a heat resistance of 200°C to 240°C is used. , Preferably, a polyurethane-based adhesive is used, and the bonding strength is preferably maintained at 0.4kg to 1kg.

Since the adhesive layer (b) having such a configuration may be implemented by a known technique, a detailed description will be omitted.

Hereinafter, an embodiment according to the lamination configuration of the peel-resistant sheet for a packaging tube using ultrasonic bonding according to the present invention will be described.

Example 1

Lamination classification Composition ratio Layer structure Thickness㎛ Outer layer 22.2% Polyethylene film (PE) 80 Barrier layer 3.3% Aluminum thin film (foil) (AL) 12 Porous absorbent layer 22.2% Polypropylene Porous Film (PP) 80 Gas barrier layer 4.2% Polyamide Film (PA) 15 Inner layer 45.3% Polyethylene film (PE) 163 Adhesive layer 2.8% Polyurethane adhesive (PU) 10

* Total composition ratio: 100%, total thickness 360㎛

Lamination classification Composition ratio Layer structure Thickness㎛ Outer layer 22.2% Polyethylene film (PE) 80 Barrier layer 3.3% Evaporated aluminum film (VM-PET) 12 Porous absorbent layer 22.2% Polypropylene Porous Film (PP) 80 Gas barrier layer 4.2% Polyamide Film (PA) 15 Inner layer 45.3% Polyethylene film (PE) 163 Adhesive layer 2.8% Polyurethane adhesive (PU) 10

* Total composition ratio: 100%, total thickness 360㎛

Lamination classification Composition ratio Layer structure Thickness㎛ Outer layer 22.2% Polyethylene film (PE) 80 Barrier layer 3.3% Aluminum oxide coating (ALOX COATING) film (PET) 12 Porous absorbent layer 22.2% Polypropylene Porous Film (PP) 80 Gas barrier layer 4.2% Polyamide Film (PA) 15 Inner layer 45.3% Polyethylene film (PE) 163 Adhesive layer 2.8% Polyurethane adhesive (PU) 10

* Total composition ratio: 100%, total thickness 360㎛

Referring to the above <Tables 3> to <Table 5>, the peeling-resistant sheet for packaging tubes using ultrasonic bonding of the present invention is, in the sleeve molding of a tube container, a blocking layer and an inner/outer layer with a porous absorption layer as the center. It is made of this symmetrically stacked structure, and it was confirmed from the experimental results that the bursting strength of the example can be obtained when bonding using ultrasonic vibration and friction heat. It can be seen that this is a relatively very good result considering that the burst test strength for a tube container required by the industry is 3.5 bar.

That is, the optimum condition for ultrasonic vibration frictional heat bonding is to construct a sheet with different barrier layer materials as shown in <Tables 3> to <Table 5>, and the method for molding this under the same conditions is ultrasonic vibration. In order to increase the friction with the welding surface of the forming shaft winding the sheet in the form of a horn and a tube, irregularities are formed on the welding surface of the forming shaft, and the depth of the irregularities is approximately 0.12mm and a square-shaped welding acid of 0.8mm*0.1mm It is preferable to form, and the downward pressure of the ultrasonic vibrating horn is 3.0 bar with respect to the welding surface where the welding acid is formed. Bonding time 0.7 seconds. As a result of joining with 15,000 vibrations per second, cooling time 0.9 seconds, and working conditions, it was confirmed that the rupture strength of the sleeve of the tube container can obtain a strength of 5.6 bar, so it is possible to maintain a very stable bonding strength. Cost reduction and economical mass production are possible.

On the other hand, in ultrasonic vibration friction heat bonding, in order to obtain sufficient rupture strength in ultrasonic vibration friction heat bonding, the thickness of the polyethylene film of the inner heat bonding layer is equal to the value of the depth of the welding acid + the compression ratio (25% of the depth of the welding acid) or ±10 Ideally, it is designed with a thickness of about %. This is to prevent damage to the gas barrier layer and to improve the storage resistance of the tube container.

Example 2

The packaging tube container having the sheet-laminated structure as shown in FIG. 3 was left at a high temperature of 80° C. for 5 days in a state filled with various types of cosmetics, and then the change in the welded cut surface, which is the bonding site between the sheets, was examined.

Sheet stacking structure Thickness㎛ Moisture permeability
g/(㎡/day) Oxygen permeability
㎠/㎡/day Filling Welding surface
Presence of change -Outer layer
-Blocking layer
-Porous absorption layer
-Inner floor
(Between each floor
Adhesive layer placement) PE/AL/PE porous/PE 310 Less than 0.1 Less than 0.5 Lip tattoo
cosmetics No change PE/EVOH/PP Porous/PE 310 0.5 3.5 For dyeing
Oxidant No change PE/VM-PET/PP Porous/PE 310 0.6 4.3 Eye cream
cosmetics No change

* Sheet layer material description

① PE: polyethylene film ②AL: Aluminum sheet

③ EVOH: Ethylene vinyl alcohol film ④VM(AL)-PET: Aluminum-deposited polyester film

⑤ Adhesive layer: Urethane-based (polyurethane adhesive coating)

⑥ PE porous (polyethylene) porous film: Nitto Denko Corporation (SUNMAP LC-T)

⑦ PP porous (polypropylene) porous film: Yulchon Chemical (synthetic paper 80-830-3000 both sides)

Table 6 shows the test results for the presence or absence of changes in the welding surface when stored at a high temperature for a packaging tube having a layered structure of a peel-resistant sheet according to an embodiment of the present invention, and the test conditions are at 80°C. After storage for 5 days, it was visually checked whether the welded surface was peeled off, and the sheet was selectively subjected to known ultrasonic vibration friction heat bonding and high frequency induction heating bonding.

Referring to <Table 6>, 3 types of tubes having different layer structures were charged with different fillings, stored for 5 days at 80℃, and exposed to high temperatures.

In the first tube structure, the filling is made of lip tattoo cosmetics, the polyethylene film is used as the inner and outer layers, and the aluminum thin plate is used as the gas barrier layer between the gas barrier layer and the inner layer, and a porous absorbing layer made of polyethylene porous film is placed between the gas barrier layer and the inner layer. As a result of the arrangement, the delamination phenomenon did not occur.

In the second tube structure, the filling is an oxidizing agent for dyeing, the polyethylene film is used as the inner and outer layers, the ethylene vinyl alcohol film is the gas barrier layer, and a porous absorbing layer made of polypropylene porous film is placed between the gas barrier layer and the inner layer. As a structure, the delamination phenomenon did not occur as a result of the experiment.

Third, under the same experimental conditions, eye cream cosmetics were used as a filling, polyethylene film as an inner and outer layer, aluminum-deposited polyester film as a gas barrier layer, and a polypropylene porous film between the gas barrier layer and the inner layer. As a structure in which the porous absorbing layer was disposed, no delamination occurred.

In summary, in the tube container having the sheet layer structure as described above, even under the condition of having the same thickness as the previous tube thickness, the moisture permeability and oxygen permeability show a difference within the tolerance, and all test items for expressing the function of the tube container are evaluated. In addition, as a result of leaving the test for 5 days in a high temperature environment of 80°C, the delamination of the sheet layer forming the tube container did not occur at all.

4 is a view for explaining a structure of a peel-resistant sheet for packaging tubes using ultrasonic bonding according to another embodiment of the present invention.

In the drawing, the inner and outer surfaces of the tube are formed between the inner and outer layers 10 and 20 made of polyethylene having a thickness of 70 to 220 μm, and between the inner and outer layers 10 and 20. An outer blocking layer 40 for preventing gas permeation, a gas blocking layer 30 positioned between the outer blocking layer 40 and the inner surface 10 to prevent gas permeation, and the outer blocking layer 40 A porous absorbing layer 50 made of a porous film positioned between the gas barrier layer 30, the inner layer 10 and the outer barrier layer 40, the gas barrier layer 30, the porous absorbing layer 50, and the outer layer A peel-resistant sheet for packaging tubes using ultrasonic bonding having a laminated structure consisting of an adhesive layer (b) for integrally bonding (20) is shown.

A configuration of a peel-resistant sheet for a packaging tube using ultrasonic bonding according to another embodiment of the present invention will be described with reference to the drawings above.

First, the peel-resistant sheet for packaging tubes using ultrasonic bonding according to the present invention is located on the inner surface of the tube when it is formed into a cylindrical tube, and forms an inner surface layer 10 and the outer surface of the tube to which the contents are directly contacted. There is an outer layer 20 on which various phrases or patterns are printed, and an outer barrier layer that prevents gas from passing between the inner and outer layers 10 and 20 to maintain good content preservation ( 40) and the gas barrier layer 30 are disposed, and also disposed between the gas barrier layer 30 and the inner layer 10, so that the interlayer due to vaporization of alcohol contained in the cosmetic contents during long-term storage and transportation at a high temperature of 50°C or higher A porous absorbing layer 50 that acts as a moisture absorbent is positioned to prevent remarkably weakening the peel strength of the adhesive layer, and each of these layers is integrally bonded by an adhesive layer (b) formed by applying an adhesive.

The inner and outer layers 10 and 20 constitute the inner and outer surfaces of the tube, which is a container for filling the contents, and are composed of a polyethylene film having a thickness of 70 to 220 μm.

These inner and outer layers 10 and 20 may be implemented by a known technique, so a detailed description thereof will be omitted.

The gas barrier layer 30 is an element that is positioned between the inner and outer layers 10 and 20 to prevent gas permeation. A ceramic film or an aluminum thin film or a film on which aluminum is deposited, or a moisture permeability of 0.1 to 3.0 g/(m 2 · day) and an oxygen permeability of 0.1 to 30 ㎠/(㎡·day) of a synthetic resin film may be used.

The synthetic resin film may be any one of a polyamide film, a polyester film, an ethylene vinyl alcohol copolymer film, and a polypropylene film.

It is preferable that the gas barrier layer 30 has a thickness of 8 µm to 12 µm, and a detailed description thereof is omitted because it may be performed by a known technique.

The outer barrier layer 40, like the gas barrier layer 30, is an element that prevents gas permeation. A ceramic film or an aluminum thin film or a film on which aluminum is deposited, or a moisture permeability of 0.1 to 3.0 g/(㎡·day) and oxygen permeability Any one of a synthetic resin film having 0.1 to 30 ㎠/(㎡·day) can be used, and the synthetic resin film at this time is any one of a polyamide film, a polyester film, an ethylene vinyl alcohol copolymer film, and a polypropylene film. Can be used.

In addition, the outer blocking layer 40 preferably has a thickness of 8 µm to 12 µm, and a detailed description thereof is omitted because it may be performed by a known technique.

The porous absorption layer 50 is a porous film positioned between the inner surface layer 10 and the gas barrier layer 30 to have a porosity, and its main component is made of polyethylene, polypropylene, polystyrene, polyester, etc. And inorganic compounds are added to form a film having voids. In the present invention, polyethylene, polypropylene, polystyrene, polyester, etc., having a thickness of 80 μm to 150 μm and forming a porous layer by a stretching manufacturing process, are used as main components. One film is used.

To further explain, the porosity of the porous absorbing layer 50 in the present invention is 15 to 30%, which is the most ideal, and the porosity generated by stretching in the manufacturing process is confirmed through the experimental results, and as a preferred example, the porosity of 15 to 30% I propose to have. In addition, the average pore size is 15 to 20 μm, preferably 17 μm, which refers to pores in which the inorganic compound acts.

That is, the specific gravity of polypropylene (PP) is 0.9 (g/), but the specific gravity of the state in which the porous layer of the stretched film is formed by the addition of inorganic compounds is 0.75 (g/), which is the porosity for application to the present invention. Film It can be applied as a film with an appropriate porous absorption layer.

On the other hand, the tube with the additional porous absorption layer 50 maintains the function of the tube container at room temperature stably as before, and prevents lamination and separation of the welded surface, which is the interlayer joint of the sheet, even when stored for a long time at high temperature.

In other words, when a tube container filled with a chemical component is left at a high temperature for a long time, the chemical component of the content vaporizes and expands, passing through the inner surface layer 10, and eventually bonding the gas barrier layer 30 and the outer layer. In the present invention, the porous absorption layer 50 absorbs the chemical component that has passed through the inner surface layer 10 and prevents it from passing through the gas barrier layer 30, thereby preventing the sheet from interlayer separation. It will be prevented.

The adhesive layer (b) is integrally bonded by applying an adhesive between the inner and outer layers 10 and 20, the gas barrier layer 30, the outer barrier layer 40, and the porous absorption layer 50, and the adhesive layer ( b) is formed by applying an adhesive made of a curable urethane resin to 2.5g/m2~4.0g/m2.

This adhesive layer (b) is a non-peelable composition, that is, a curable adhesive having a property that the laminated sheet is not separated by external stress applied to the tube container including bending, folding, etc., and a heat resistance of 200°C to 240°C is used. , Preferably, a polyurethane-based adhesive is used, and the bonding strength is preferably maintained at 0.4kg to 1kg.

Since the adhesive layer (b) having such a configuration may be implemented by a known technique, a detailed description will be omitted.

Example 3

The packaging tube container having a sheet-laminated structure as shown in FIG. 4 was left at a high temperature of 80° C. for 5 days in a state filled with various types of cosmetics, and then the change in the welded cut surface, which is the bonding site between the sheets, was examined.

Sheet stacking structure thickness
㎛ Moisture permeability
g/(㎡/day) Oxygen permeability
㎠/㎡/day Filling Welding surface
Presence of change -Outer layer
-1st fault
-Porous absorption layer
-2nd Fault
-Inner floor
(Between each floor
Adhesive layer placement) PE/AL/PE Porous/PA(NY)/PE 360 Less than 0.1 Less than 0.5 Hand cream
/Eye cream No change PE/PET/PP Porous/PA(NY)/PE 360 0.5 28.0 Cleansing Foam
/Hand cream No change PE/VM-PET/PP Porous/PA(NY)/PE 360 0.5 4.5 Eye cream
/Sun cream No change PE/SiO-PET/PP Porous/PA(NY)/PE 360 0.5 3.1 Cleansing Foam
/Sun cream No change PE/PET/PP Porous/EVOH/PE 360 0.5 2.0 Hand cream
/Sun cream No change

* Sheet layer material description

① PE: polyethylene film ② AL: Aluminum sheet

③ PA(NY): Polyamide film (biaxially stretched nylon film) ④ PET: Polyester film

⑤ VM(AL)-PET: Aluminum-deposited polyester film

⑥ SiO-PET: silica-deposited polyester film

⑦ EVOH: Ethylene vinyl alcohol film ⑧ Adhesive layer: Urethane-based (polyurethane adhesive coating)

⑨ PE porous (polyethylene) porous film: Nitto Denko Corporation (SUNMAP LC-T)

⑩ PP porous (polypropylene) porous film: Yulchon Chemical (synthetic paper 80-830-3000 both sides)

Table 7 above shows the test results for confirming the presence or absence of a change in the welding surface of the packaging tube having a laminated structure of a general sheet to which the present invention is applied, as in <Table 6> described above. After storage for 5 days at, it was visually checked whether the welding surface was peeled off, and the sheet was selectively subjected to known ultrasonic vibration friction heat bonding and high frequency induction heating bonding.

Referring to <Table 7>, 5 kinds of tubes having different layer structures but with a gas barrier layer in a double structure are charged with different packing materials and stored at 80℃ for 5 days and exposed to high temperatures.

The first tube structure is a hand cream or eye cream as a filling, and a polyethylene film is used as the inner and outer layers, and a gas barrier layer with aluminum thin plate and polyamide as the first and second barrier layers is placed between them. In addition, a porous absorbing layer made of a polyethylene porous film was disposed between the first and second barrier layers, and as a result of the experiment, no delamination occurred.

In the second tube structure, a cleansing foam or hand cream is used as a filling, and a polyethylene film is used as an inner and outer layer, and a polyester film and a polyamide film are used as the first and second barrier layers. A porous absorbing layer made of a polypropylene porous film was disposed between the first barrier layer and the second barrier layer, and as a result of the experiment, no delamination occurred.

In the third structure, eye cream or sun cream is used as a filling material, polyethylene film is used as inner and outer layers, and evaporated polyester film and polyamide film are arranged as a first layer and a second layer. These first barrier layers and A porous absorbing layer made of a porous polypropylene film was disposed between the second barrier layers, and as a result of the experiment, no delamination occurred.

In the fourth structure, a cleansing foam or sunscreen is used as a filling, and a polyethylene film is disposed as an inner and outer layer, and a gas barrier layer with a silica deposition film and a polyamide film as the first and second barrier layers is disposed. A porous absorbing layer made of a polypropylene porous film was disposed between the first and second barrier layers, and as a result of the experiment, no delamination occurred.

In the fifth structure, hand cream or sun cream is used as a filling, and polyethylene film is disposed as an inner and outer layer, and polyester film and ethylene vinyl alcohol film are disposed as a first layer and a second layer. These first barrier layers A porous absorbing layer made of a porous polypropylene film was disposed between the layer and the second barrier layer. As a result of the experiment, no delamination occurred.

As can be seen from the above experimental results, the present invention is through an experiment in which cosmetics of various ingredients are filled and left at a high temperature of 80°C for 5 days, through a configuration in which a porous absorbing layer is added in the stacked structure of the existing tube. It can be seen that the deformation and damage of the tube are prevented by preventing the change in physical properties of the adhesive layer due to the vaporization and expansion of chemical components contained in the contents.

In summary, in the tube container having the sheet layer structure as described above, even under the condition of having the same thickness as the previous tube thickness, the moisture permeability and oxygen permeability show a difference within the tolerance, and all test items for expressing the function of the tube container are evaluated. In addition, as a result of leaving the test for 5 days in a high temperature environment of 80°C, the delamination of the sheet layer forming the tube container did not occur at all.

On the other hand, the present invention is not limited to the disclosed embodiments, and it is possible to use it by changing the application site, and that various modifications and variations can be made without departing from the spirit and scope of the present invention. It is self-evident to those who have knowledge. Therefore, such modifications or modifications will have to belong to the claims of the present invention.

10: inner layer
20: outer layer
30: gas barrier layer
40: outer blocking layer
50: porous absorption layer
b: adhesive layer

Claims (6)

In the peel-resistant sheet for packaging tubes using ultrasonic bonding in which a portion of the sheet is overlapped and wound into a cylindrical shape to form a tube,
Inner and outer layers of polyethylene film forming the inner and outer surfaces of the tube;
An outer blocking layer made of an aluminum thin film to be positioned between the inner and outer layers to prevent gas permeation;
A gas barrier layer made of a polyamide film that is positioned between the inner and outer layers to prevent gas permeation and has a moisture permeability of 0.1 to 3.0 g/(m 2 ·day) and an oxygen permeability of 0.1 to 30 cm 2/(m 2 ·day);
A porous absorbing layer made of a polypropylene porous film positioned between the inner surface layer and the gas barrier layer;
Including; an adhesive layer that is integrally bonded by applying a polyurethane adhesive between the inner and outer layers, the gas barrier layer, and the absorption layer; and

The inner layer 45.3%, the outer layer 22.2%, the outer barrier layer 3.3%, the porous absorption layer 22.2%, the gas barrier layer 4.2%, the adhesive layer using ultrasonic bonding, characterized in that the composition ratio of 2.8% Peel-resistant sheet for packaging tubes.
In the peel-resistant sheet for packaging tubes using ultrasonic bonding in which a portion of the sheet is overlapped and wound into a cylindrical shape to form a tube,
Inner and outer layers of polyethylene film forming the inner and outer surfaces of the tube;
An outer blocking layer made of a vapor-deposited aluminum film positioned between the inner and outer layers to prevent gas permeation;
A gas barrier layer made of a polyamide film that is positioned between the inner and outer layers to prevent gas permeation and has a moisture permeability of 0.1 to 3.0 g/(m 2 ·day) and an oxygen permeability of 0.1 to 30 cm 2/(m 2 ·day);
A porous absorbing layer made of a polypropylene porous film positioned between the inner surface layer and the gas barrier layer;
Including; an adhesive layer that is integrally bonded by applying a polyurethane adhesive between the inner and outer layers, the gas barrier layer, and the absorption layer; and
The inner layer 45.3%, the outer layer 22.2%, the outer barrier layer 3.3%, the porous absorption layer 22.2%, the gas barrier layer 4.2%, the adhesive layer using ultrasonic bonding, characterized in that the composition ratio of 2.8% Peel-resistant sheet for packaging tubes.
In the peel-resistant sheet for packaging tubes using ultrasonic bonding in which a portion of the sheet is overlapped and wound into a cylindrical shape to form a tube,
Inner and outer layers of polyethylene film forming the inner and outer surfaces of the tube;
An outer barrier layer made of an aluminum oxide coating film positioned between the inner and outer layers to prevent gas permeation;
A gas barrier layer made of a polyamide film that is positioned between the inner and outer layers to prevent gas permeation and has a moisture permeability of 0.1 to 3.0 g/(m 2 ·day) and an oxygen permeability of 0.1 to 30 cm 2/(m 2 ·day);
A porous absorbing layer made of a polypropylene porous film positioned between the inner surface layer and the gas barrier layer;
Including; an adhesive layer that is integrally bonded by applying a polyurethane adhesive between the inner and outer layers, the gas barrier layer, and the absorption layer; and
The inner layer 45.3%, the outer layer 22.2%, the outer barrier layer 3.3%, the porous absorption layer 22.2%, the gas barrier layer 4.2%, the adhesive layer using ultrasonic bonding, characterized in that the composition ratio of 2.8% Peel-resistant sheet for packaging tubes.
The method according to any one of claims 1 to 3,
The porous absorption layer has a porosity of 15 to 30%, and a pore size of 15 to 20 μm. A peel-resistant sheet for packaging tubes using ultrasonic bonding.
The method according to any one of claims 1 to 3,
The inner and outer layers have a thickness of 70 to 220 µm, the porous absorbing layer has a thickness of 80 to 150 µm, the gas barrier layer has a thickness of 8 to 12 µm, and the adhesive layer is a polyurethane adhesive of 2.5 g/m 2 to 4.0 A peel-resistant sheet for packaging tubes using ultrasonic bonding, which is formed by applying g/m 2.
In the peel-resistant sheet for packaging tubes using ultrasonic bonding in which a portion of the sheet is overlapped and wound into a cylindrical shape to form a tube,
An inner and outer layer providing step of forming an inner and outer surface of the tube and including inner and outer layers of polyethylene film;
A step of providing an outer blocking layer disposed between the inner and outer layers to prevent gas permeation, and disposing an outer blocking layer made of one of an aluminum thin film, a deposited aluminum film, or an aluminum oxide coating film;
It is located between the inner and outer layers to prevent gas permeation. A gas barrier layer made of polyamide film having a moisture permeability of 0.1 to 3.0 g/(m²·day) and an oxygen permeability of 0.1 to 30 cm 2/(m²·day) Providing a gas barrier layer to be disposed;
A step of providing a porous absorption layer disposed between the inner surface layer and the gas barrier layer to arrange a porous absorption layer made of a porous polypropylene film;
Including an adhesive layer application step of applying an adhesive layer formed integrally by applying a polyurethane adhesive between the inner and outer layers, the gas barrier layer and the absorption layer;,
The inner layer 45.3%, the outer layer 22.2%, the outer barrier layer 3.3%, the porous absorption layer 22.2%, the gas barrier layer 4.2%, the adhesive layer is ultrasonically vibrated for the laminated body to have a composition ratio of 2.8% The horn is contacted and bonded, but the downward pressure is 3.0bar. Bonding time 0.5~1 sec. Completing the laminate into a single sheet with a vibration frequency of 14,000 to 16,000 times per second and a cooling time of 0.7 to 1.2 seconds;
Method for producing a peel-resistant sheet for packaging tubes using ultrasonic bonding, characterized in that consisting of.

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