KR20160085058A - Laminated Film for Packing material and packing bag - Google Patents
Laminated Film for Packing material and packing bag Download PDFInfo
- Publication number
- KR20160085058A KR20160085058A KR1020150001935A KR20150001935A KR20160085058A KR 20160085058 A KR20160085058 A KR 20160085058A KR 1020150001935 A KR1020150001935 A KR 1020150001935A KR 20150001935 A KR20150001935 A KR 20150001935A KR 20160085058 A KR20160085058 A KR 20160085058A
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- KR
- South Korea
- Prior art keywords
- film
- thermoplastic polyurethane
- nylon
- tpu
- packaging material
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/38—Packaging materials of special type or form
- B65D65/40—Applications of laminates for particular packaging purposes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/20—Inorganic coating
- B32B2255/205—Metallic coating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/726—Permeability to liquids, absorption
- B32B2307/7265—Non-permeable
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2310/00—Treatment by energy or chemical effects
- B32B2310/021—Treatment by energy or chemical effects using electrical effects
- B32B2310/022—Electrical resistance
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2323/00—Polyalkenes
- B32B2323/10—Polypropylene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2439/00—Containers; Receptacles
- B32B2439/70—Food packaging
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2553/00—Packaging equipment or accessories not otherwise provided for
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wrappers (AREA)
Abstract
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminated film for a packaging material, and more particularly, to a laminated film for a packaging material having a thermoplastic polyurethane (TPU) film at least on one layer and excellent in cracking prevention effect and a packaging bag using the laminated film.
Description
The present invention relates to a laminated film for a packaging material and a packaging bag using the laminated film, and more particularly, to a laminated film for a packaging material which has a thermoplastic polyurethane (TPU) film on at least one layer, will be.
The electrostatic dispersing bag for packaging electronic parts or semiconductor parts is most important in moisture shielding function, and it is required not only electrostatic dispersing function but also anti-fouling function capable of preventing contamination from fingerprints and foreign matter and moistureproof function capable of protecting from moisture.
Conventionally known films for electrostatic dispersion electronic component packaging envelopes are generally made of a metalized polyester film produced by depositing or sputtering a metal material such as aluminum, nickel, titanium, copper, chromium, or zinc on a polyester plastic film A polyethylene film having a surface coated with a surface active agent, carbon black or the like was laminated to produce an electronic part packaging envelope.
Precision electronic parts such as electronic parts or parts for packing semiconductor parts and heads for computer hard disk drives should be transported in a state in which they are not affected by moisture because they are totally shielded from dust and moisture since their performance largely depends on dust or surrounding moisture. At this time, these electronic parts are packed in a container and then put into an antistatic or moisture-shielding bag and vacuum-packed.
However, OLED (Organic Light Emitting Diode) cell or module packaging for displays, electronic components or semiconductors packaging, especially cracks due to angled parts, There arises a problem that a large amount of defects are caused together with the occurrence of costs.
SUMMARY OF THE INVENTION An object of the present invention is to provide a laminated film for packaging material which is excellent in the effect of preventing cracking in the production of packaging bags.
It is another object of the present invention to provide a packaging bag which is excellent in cracking prevention effect and excellent in moisture barrier effect and can be used as a product packaging product sensitive to foreign matter and moisture.
In order to achieve the object of the present invention, A moisture barrier layer formed on at least one layer of the outer layer film; And an inner layer film formed on the moisture barrier layer, wherein a laminated film for a packaging material comprising thermoplastic polyurethane (TPU) film is provided on at least one of the multiple layers.
In order to achieve still another object of the present invention, the present invention provides a packaging bag made of a laminated film for a packaging material according to the present invention.
The laminated film for packaging according to the present invention can be produced when the display and the electronic component cell or module are transported after the packaging as compared with the electronic component packaging envelope using the conventional polyethylene film (linear low density polyethylene, LLDPE) It is possible to manufacture a packaging bag which is not only free from foreign objects due to the cracking phenomenon but also exhibits excellent moisture shielding efficiency.
The laminated film for packaging according to the present invention can be used for packaging a cell or a module of a display, an electronic part, or a moisture-shielding film for packaging an IT part, an electric / electronic part, an automobile part, And a packaging bag excellent in crack prevention effect can be produced.
1 is a cross-sectional view of a laminated film for a packaging material according to an embodiment of the present invention.
2 is a cross-sectional view of a laminated film for a packaging material including an antistatic coating layer according to an embodiment of the present invention.
3 is a cross-sectional view of a laminated film for a packaging material according to an embodiment of the present invention.
4 is a cross-sectional view of a laminated film for a packaging material including an antistatic coating layer according to an embodiment of the present invention.
FIG. 5 is a cross-sectional view of a laminated film for a packaging material including an anti-static antistatic agent according to an embodiment of the present invention.
Hereinafter, the present invention will be described in more detail.
According to one embodiment of the present invention, an outer layer film; A moisture barrier layer formed on at least one layer of the outer layer film; And an inner layer film formed on the moisture barrier layer, wherein a laminated film for a packaging material comprising thermoplastic polyurethane (TPU) film is provided on at least one of the multiple layers.
According to one embodiment of the present invention, the thermoplastic polyurethane film may comprise at least one surface of the inner layer film, or the inner layer film itself.
According to an embodiment of the present invention, the outer layer film may be selected from a polyethylene terephthalate, nylon or polypropylene film, and preferably a nylon film. The thickness of the outer layer film is preferably 0.005 to 10 mm.
According to an embodiment of the present invention, the moisture barrier layer may be an aluminum foil, an aluminum evaporated film, an aluminum vapor deposited film, a transparent film deposited with alumina, or a transparent film deposited with alumina and coated with PVDF, ~ 10 mm can be used.
According to an embodiment of the present invention, the thermoplastic polyurethane (TPU) film may be manufactured by forming a TPU film in a blow or T-die form, then bonding the TPU film in a dry laminated form, and they are directly extruded in the form of a die and bonded to form a multilayer. The thickness of the TPU film is 0.005 ~ 10 mm. When the thickness of the film is less than 0.005 mm, workability is difficult and tear easily occurs. If it is more than 10 mm, the price competitiveness may be lowered and the weight of the packaging material may increase.
According to an embodiment of the present invention, two laminated films for a packaging material according to the present invention are thermally joined to each other so that the inner layer may be a thermoplastic polyurethane (TPU) film, It is possible to manufacture an envelope for excellent electronic component packaging material.
According to an embodiment of the present invention, the inner layer film may be formed by using a thermoplastic polyurethane film as it is, or by using a low density polyethylene (LDPE), a linear low density polyethylene (LLDPE), a high density polyethylene , HDPE), or a polyethylene film composed of a mixture of these polyethylenes.
According to an embodiment of the present invention, the laminated film for packaging material may be composed of nylon / aluminum / thermoplastic polyurethane film, nylon / aluminum / polyethylene film / thermoplastic polyurethane film.
This structure makes it possible to pack the front part of the electronic parts sensitive to the cracking in the packaging of the electronic parts in contact with the inner layer made of the thermoplastic polyurethane (TPU), and the back part of the electronic part which is not greatly affected by the cracking, Film (Linear low density polyethylene, LLDPE), and thus it is possible to secure price competitiveness.
According to one embodiment of the present invention, the final inner layer may be composed of a thermoplastic polyurethane (TPU) film, while a polyethylene film may be applied to the intermediate layer to minimize the thickness of the polyurethane film. The polyethylene film may be a polyethylene film composed of low density polyethylene (LDPE), linear low density polyethylene (LLDPE), high density polyethylene (HDPE), or a mixture of these polyethylene. The thickness of the polyethylene film may be 0.005 to 10 mm in thickness.
According to an embodiment of the present invention, an antistatic function is added to at least one layer of the multilayer, and the antistatic function may be of a coating type or an internal type.
In the coating type antistatic function, an antistatic coating composition is coated on at least one layer of the multilayer by an ordinary coating method such as gravure, roll, or spray on the outer surface and thermally cured at 50 to 100 ° C for 2 minutes to form an antistatic coating layer . The surface resistivity was measured by ASTM D257 method at 10 ^ 6 Ω / □.
The antistatic coating composition may be configured differently for each layer, and the conductive coating composition of the outer layer film may be a conductive material such as an organic conductive polymer, a carbon nanotube, or a graphene, in particular, a conductive poly (3,4- (HC Starck, Germany), acrylic or urethane copolymer binders, water and organic solvents (NMP, DMSO, alcohols), and additives.
The antistatic coating layer to be formed on the inner layer (or the thermoplastic polyurethane film) is generally prepared by coating a charge-controlling agent such as a surface active agent, a polymer type surface active agent, and an ion complex type charge agent in a solvent such as methyl alcohol, ethyl alcohol, isopropyl alcohol, isobutyl alcohol, An antioxidant coating composition is prepared by mixing with an alcohol type such as butyl alcohol, benzyl alcohol or ethylene glycol or water, and then the antistatic coating composition is coated on the inner surface by a general coating method such as gravure, roll, spray or the like And then thermally cured at 50 to 100 ° C for 2 minutes to form an antistatic coating layer. The surface resistance is 10 9 Ω / □ when measured according to ASTM D257.
According to one embodiment of the present invention, the inner layer film may be a thermoplastic polyurethane (TPU) film structure having an antistatic effect including an anti-static antistatic agent. As the anti-static antistatic agent for antistatic thermoplastic polyurethane (TPU) film, an ionic, ionic complex type, nonionic polymer antistatic agent can be used. The surface resistivity was measured by ASTM D257 method at 10 ^ 9 Ω / □.
The laminated film for a packaging material according to the present invention can be produced by bonding the inner layer surfaces at a temperature of 150 ° C to 200 ° C to each other.
The laminated film for packaging material manufactured according to the present invention can be used for packing displays, cellular modules or modules of electronic components, packaging of IT components, electrical and electronic components, automobile components, as well as foods and industrial products , It is possible to produce a packaging bag excellent in water-shielding efficiency and cracking prevention effect.
Hereinafter, the present invention will be described in more detail with reference to the drawings.
1 to 5, a cross-sectional view of a laminated film for a packaging material including a thermoplastic polyurethane (TPU) film, which improves the problems of moisture generation due to water blocking efficiency and cracking, is illustrated in the present invention , And a laminated film for packaging material excellent in cracking prevention property, which is produced by including the thermoplastic polyurethane film in at least one layer in a laminated film composed of the multilayer of the present invention shown in Fig. 1 to Fig. 5 of the present invention.
1 is a cross-sectional view showing the structure of a multilayer film formed of an
2 is a cross-sectional view of a laminated film for a packaging material according to an embodiment of the present invention, and further includes a polyethylene layer between the inner layer and the moisture barrier layer. By further adding a polyethylene layer, the thickness of the polyurethane film can be minimized, and the manufacturing cost can be lowered.
3 is a cross-sectional view of a laminated film for a packaging material according to an embodiment of the present invention, in which an antistatic effect is obtained by adding an
4 is a cross-sectional view of a laminated film for a packaging material according to an embodiment of the present invention in which a
5 is a cross-sectional view of a laminated film for a packaging material according to an embodiment of the present invention. In the laminated film of Fig. 4, the outer layer film has antistatic function as an antistatic coating layer and the inner layer film is composed of an antistatic antistatic agent .
Hereinafter, the present invention will be described in more detail with reference to examples. However, this should not be construed as limiting the scope of the invention.
Example 1:
Nylon / Al / TPU Multilayer laminated film for packaging materials
After coating EAA adhesive with 5 ~ 10um thickness on Nylon 15um film, primary curing is carried out at 60 ~ 100 ℃ for 2 ~ 5, then Alum foil 7um is rolled and rolled. In the Nylon / Al laminated film, the adhesive is coated on the Al side with a thickness of 5 ~ 10 um and then dried and cured at 60 ~ 100 ℃ for 2 ~ 5 minutes. TPU 45um film is rolled with 50 ~ 60 Nylon / Al / TPU multilayer film was prepared by aging at room temperature for 48 hours.
- Packing bag manufacturing using Nylon / Al / TPU laminated film
Two Nylon / Al / TPU multilayer films were arranged facing the TPU surfaces facing each other, and then pressure was applied at a temperature of 150 to 160 ° C at a pressure of 2 to 5 kg to form a three-layer sealed packaging bag.
Example 2
- Nylon / Al / PE / TPU multilayer film for packaging materials
EAA adhesive is coated on the Nylon 15um film with a thickness of 5 ~ 10 μm, primary cured at 60 ~ 100 ℃ for 2 ~ 5 hours, and 7 ㎛ Al foil is rolled and rolled. A 45 um double-layer film of TPU (15 um) / LLDPE (30 um) was blown by blowing method. Then, the Nylon / Al laminated film was coated with EAA adhesive to a thickness of 5-10 μm on the Al side, C for 2 to 5 minutes. The mixture was agitated at 50 ~ 60 ℃ for 48 hours to prepare Nylon / Al / LLDPE / TPU multilayer film.
- Manufacture of packaging bag using Nylon / Al / PE / TPU laminated film
Two layers of Nylon / Al / LLDPE / TPU multilayer films were arranged facing TPU faces and pressed at 2 ~ 5kg at 150 ~ 160 ℃.
Comparative Example 1
- Nylon / Al / LLDPE Multilayer laminated film production
A Nylon / Al / LLDPE multilayer film was prepared in the same manner as in Example 1 except that LLDPE 45um film was used instead of TPU 45um film.
- Manufacture of packaging bag using Nylon / Al / LLDPE laminated film
Two Nylon / Al / LLDPE multi-layer films were arranged in such a way that the LLDPE faces were opposed to each other, and then fabricated in the same manner as in Example 1 to prepare a packaging bag.
Experimental Example
Table 1 and Table 2 show the results of measuring the moisture-blocking efficiency (moisture permeability measurement) and the effect of preventing cracking of the packaging bag manufactured according to Example 1 and Comparative Example 1.
The anti-cracking effect and the moisture barrier effect were measured on the inner layer film surfaces of Example 1 and Comparative Example 1.
The thickness of the packaging bag was prepared under the same conditions, and the moisture shielding efficiency (moisture permeability measurement) was measured. The abrasion measurement test was carried out by measuring the weight before and after 7,000 times (50 rpm) under a load of 1 kg using an abrasion measuring machine (Model: NO.570, CS-17). ShowA hardness was measured by using the YOSHIMITSU YCC-230/1 hardness meter to measure the measurement point of the product, pressing the body vertically, reading the scale indicated by the instrument panel, and measuring the pencil hardness YOSHIMITSU (221-D) pencil hardness The pencil was inserted into a pencil hardness tester using a measuring instrument (a miss pencil) and after confirming that the pencil was parallel to the ground and the pressurized product, the surface of the surface was measured by running the measuring apparatus straight. The moisture permeability was measured according to ASTM E 96-80.
(Ny + Al + LLDPE)
(Ny + Al + TPU)
(Ny + Al + LLDPE + TPU)
(Pencil hardness index value notation)
A hardness
(g)
Wear amount
(g / m 3, 24 hrs)
In the measurement results of Tables 1 and 2, the laminated film comprising the thermoplastic polyurethane (TPU) film of the inner layer film according to the present invention has a hardness in comparison with the conventional polyethylene film (linear low density polyethylene, LLDPE) great. In addition, according to the present invention, it was found that the thermoplastic polyurethane (TPU) film as the inner layer film did not suffer any grinding in the measurement of wear, which is a measure of the grinding phenomenon. In addition, it was confirmed that the moisture blocking efficiency (moisture permeability measurement) was equal to or better than the moisture blocking envelope for existing electronic parts.
10: outer layer film 20: water barrier layer
30: Thermoplastic polyurethane (TPU) film
40: Polyethylene (PE) film
50: antistatic coating layer
60: Thermoplastic polyurethane (TPU) film
Claims (13)
A moisture barrier layer formed on at least one layer of the outer layer film; And
And an inner layer film formed on the moisture barrier layer,
And a thermoplastic polyurethane (TPU) film on at least one side of the multilayer.
Wherein the thermoplastic polyurethane (TPU) film is formed on at least one surface of the inner layer film.
Wherein the outer layer film is at least one selected from the group consisting of polyethylene terephthalate, nylon and polypropylene films.
Wherein the outer layer film is a nylon film.
Wherein the outer layer film is a nylon film.
Wherein the thickness of the outer layer film, the moisture barrier layer, the inner layer film or the thermoplastic polyurethane film is 0.005 to 10 mm.
Wherein the inner layer film is a thermoplastic polyurethane film.
A low density polyethylene (LDPE), a linear low density polyethylene (LLDPE), a high density polyethylene (HDPE), or a polyethylene film composed of a mixture of these polyethylene is laminated between the inner layer film and the moisture barrier layer ≪ RTI ID = 0.0 > laminated < / RTI > film for packaging material.
Wherein the laminated film for a packaging material is a nylon / aluminum / thermoplastic polyurethane film, a nylon / aluminum / polyethylene film / a thermoplastic polyurethane film.
Wherein the laminated film for a packaging material is for a display, a cell or a module of an electronic part, an IT part, an electric / electronic part, an automobile part or a food packing.
Wherein the laminated film for packaging material constitutes at least one surface, and at least the other surface is constituted by a nylon / aluminum / polyethylene film.
Wherein the packaging bag is for a display, a cell or a module of an electronic part, an IT part, an electric / electronic part, an automobile part or a food packing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020150001935A KR20160085058A (en) | 2015-01-07 | 2015-01-07 | Laminated Film for Packing material and packing bag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020150001935A KR20160085058A (en) | 2015-01-07 | 2015-01-07 | Laminated Film for Packing material and packing bag |
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| Publication Number | Publication Date |
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| KR20160085058A true KR20160085058A (en) | 2016-07-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020150001935A KR20160085058A (en) | 2015-01-07 | 2015-01-07 | Laminated Film for Packing material and packing bag |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106863946A (en) * | 2017-03-06 | 2017-06-20 | 无锡市羊尖华强塑料彩印有限公司 | Key works Drug packing polyester compound film and preparation method thereof |
| KR101908129B1 (en) | 2018-04-09 | 2018-10-15 | 주식회사 엔에스엠 | Anti-static Al sheet |
| CN111894428A (en) * | 2020-07-10 | 2020-11-06 | 佛山瓦瑟门窗科技有限公司 | Whole window drainage system |
-
2015
- 2015-01-07 KR KR1020150001935A patent/KR20160085058A/en not_active Application Discontinuation
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106863946A (en) * | 2017-03-06 | 2017-06-20 | 无锡市羊尖华强塑料彩印有限公司 | Key works Drug packing polyester compound film and preparation method thereof |
| KR101908129B1 (en) | 2018-04-09 | 2018-10-15 | 주식회사 엔에스엠 | Anti-static Al sheet |
| CN111894428A (en) * | 2020-07-10 | 2020-11-06 | 佛山瓦瑟门窗科技有限公司 | Whole window drainage system |
| CN111894428B (en) * | 2020-07-10 | 2022-04-29 | 佛山瓦瑟门窗科技有限公司 | Whole window drainage system |
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