WO2024147407A1 - 다층 스트래치 필름 - Google Patents
다층 스트래치 필름 Download PDFInfo
- Publication number
- WO2024147407A1 WO2024147407A1 PCT/KR2023/002858 KR2023002858W WO2024147407A1 WO 2024147407 A1 WO2024147407 A1 WO 2024147407A1 KR 2023002858 W KR2023002858 W KR 2023002858W WO 2024147407 A1 WO2024147407 A1 WO 2024147407A1
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- Prior art keywords
- layer
- weight
- density polyethylene
- stretch film
- film
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
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- B65D71/0096—Palletisable loads, i.e. loads intended to be transported by means of a fork-lift truck provided with one or more rigid supports, at least one dimension of the supports corresponding to a dimension of the load, e.g. skids the dimensions of the supports corresponding to the periphery of the load, e.g. pallets
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
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Definitions
- the present application aims to solve the problem of providing a multilayer stretch film that can shorten the time it takes for the multiple layers constituting the film to be fixed.
- the present application aims to solve the problem of providing a multilayer stretch film with excellent breathability.
- Each of the first layer and the second layer may be made of 100% low-density polyethylene (LDPE) with a density of 0.910 to 0.920 g/cm3.
- LDPE low-density polyethylene
- the second layer is metallocene linear low density polyethylene (mLLDPE) with a density of 0.910 to 0.920 g/cm3; low density polyethylene (LDPE) with a density of 0.910 to 0.920 g/cm3; and polyolefin elastomer (POE) with a density of 0.85 to 0.910 g/cm3.
- mLLDPE metallocene linear low density polyethylene
- LDPE low density polyethylene
- POE polyolefin elastomer
- the concentration of erucamide may be set to 300 to 600 ppm.
- the weight of the metallocene linear low density polyethylene (mLLDPE) is set to 40 to 50% of the weight of the second layer, and the weight of the low density polyethylene (LDPE) is set to 10 to 30% of the weight of the second layer,
- the weight of the polyolefin elastomer (POE) may be set to 10 to 30% of the weight of the second layer.
- the thickness ratio of the first layer, the core layer, and the second layer may be set to 1:2:1.
- the layer through-hole may be provided as a plurality of holes provided along the width direction of the film or the longitudinal direction of the film.
- the thickness ratio of the first layer, the core layer, and the second layer may be set to 1:2:1.
- the second layer is metallocene linear low density polyethylene (mLLDPE) with a density of 0.910 to 0.920 g/cm3; low density polyethylene (LDPE) with a density of 0.910 to 0.920 g/cm3; Polyolefin elastomer (POE) with a density of 0.85 to 0.910 g/cm3; and erucamide at a concentration of 300 to 600 ppm.
- mLLDPE metallocene linear low density polyethylene
- LDPE low density polyethylene
- POE Polyolefin elastomer
- erucamide at a concentration of 300 to 600 ppm.
- the present application provides a multilayer stretch film that can shorten the time it takes for multiple layers constituting the film to be fixed.
- Figures 5 and 6 show an example of a multilayer stretch film provided with layer through holes.
- Methods of packaging a product with a stretch film include wrapping a film from the top to the bottom of the product using a stretch hood film, and wrapping a part or all of the product with a stretch film. There are wrapping and shrink wrapping, which control the shrinkage rate of the film by applying heat while packaging the product with stretch film.
- the packaging machine 3 calculates the required amount of film 100. As shown in FIG. 1(b), the packaging machine 3 cuts the required amount of film 100 and simultaneously bonds the cut surfaces. The film 100 with the cutting surface bonded becomes a hood-shaped film 4 with a closed upper surface.
- the arms 31 provided in the packaging device 3 pull the edge of the hood-shaped film 4 to expand its diameter and then extend the diameter from the top of the product 1.
- the hood-shaped film (4) is covered on the lower part.
- the hood-shaped film 4 shrinks to protect the shape and appearance of the product 1.
- first layer and a second layer made of low-density polyethylene, and a core layer located between the first layer and the second layer and made of ethylene vinyl acetate (EVA).
- EVA ethylene vinyl acetate
- the multilayer stretch film 200 in which the core layer 230 is made of polyolefin elastomer (POE) has a length direction of the film and It was confirmed that the tensile strength in the width direction and the elongation rate in the longitudinal and width directions of the film were excellent.
- the core layer 230 is made of 100% polyolefin elastomer (POE) with a density of 0.85 to 0.910 g/cm3, and each of the first layer 210 and the second layer 220 has a density of 0.910 to 0.920 g/cm3. It can be made of 100% low-density polyethylene (LDPE).
- POE polyolefin elastomer
- LDPE low-density polyethylene
- the core layer 230 is made of 100% polyolefin elastomer (POE) with a density of 0.85 to 0.910 g/cm3, and the first layer 210 is made of metallocene with a density of 0.910 to 0.920 g/cm3.
- POE polyolefin elastomer
- the second layer 220 has a density to be made of a mixture of metallocene linear low density polyethylene (mLLDPE) with a density of 0.910 to 0.920 g/cm3, low density polyethylene (LDPE) with a density of 0.910 to 0.920 g/cm3, and polyolefin elastomer (POE) with a density of 0.85 to 0.910 g/cm3, and the second layer 220 has a density to be made of a mixture of metallocene linear low density polyethylene (mLLDPE) with a density of 0.910 to 0.920 g/cm3, low density polyethylene (LDPE) with a density of 0.910 to 0.920 g/cm3, and polyolefin elastomer (POE) with a density of 0.85 to 0.910 g/cm3.
- mLLDPE metallocene linear low density polyethylene
- LDPE low density polyethylene
- POE polyolefin elastomer
- the weight of the metallocene linear low density polyethylene is set to 40 to 50% of the weight of the first layer, and the weight of the low density polyethylene (LDPE) is set to 10 to 30% of the weight of the first layer.
- the weight of the polyolefin elastomer (POE) may be set to 10 to 30% of the weight of the first layer, and the weight of the erucamide may be set to 2 to 4% of the weight of the first layer.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Laminated Bodies (AREA)
Abstract
Description
Claims (13)
- 저밀도 폴리에틸렌(LDPE)으로 제작되는 제1레이어 및 제2레이어; 및폴리올레핀 엘라스토머(POE)로 제작되어 상기 제1레이어와 상기 제2레이어 사이에 위치하는 코어 레이어;를 포함하는 것을 특징으로 하는 다층 스트래치 필름(multilayer stretch film).
- 제1항에 있어서,상기 코어 레이어는 밀도 0.85 내지 0.910 g/㎤의 폴리올레핀 엘라스토머(POE) 100%로 제작되는 것을 특징으로 하는 다층 스트래치 필름.
- 제2항에 있어서,상기 제1레이어, 상기 코어 레이어, 및 상기 제2레이어의 중량비는 1:3:1로 설정되는 것을 특징으로 하는 다층 스트래치 필름.
- 제2항에 있어서,상기 제1레이어, 상기 코어 레이어, 및 상기 제2레이어의 두께비는 1:2:1로 설정되는 것을 특징으로 하는 다층 스트래치 필름.
- 제2항에 있어서,상기 제1레이어와 상기 제2레이어 각각은 밀도 0.910 내지 0.920 g/㎤의 저밀도 폴리에틸렌(LDPE) 100%로 제작되는 것을 특징으로 하는 다층 스트래치 필름.
- 제2항에 있어서,상기 제1레이어는밀도 0.910 내지 0.920g/㎤의 메탈로센 선형 저밀도 폴리에틸렌(mLLDPE); 밀도 0.910 내지 0.920 g/㎤의 저밀도 폴리에틸렌(LDPE); 및 밀도 0.85 내지 0.910 g/㎤의 폴리올레핀 엘라스토머(POE)의 혼합물로 제작되는 것을 특징으로 하는 다층 스트래치 필름.
- 제6항에 있어서,상기 메탈로센 선형 저밀도 폴리에틸렌(mLLDPE)의 중량은 상기 제1레이어 중량의 40 내지 50%로 설정되고,상기 저밀도 폴리에틸렌(LDPE)의 중량은 상기 제1레이어 중량의 10 내지 30%로 설정되며,상기 폴리올레핀 엘라스토머(POE)의 중량은 상기 제1레이어 중량의 10 내지 30%로 설정되는 것을 특징으로 하는 다층 스트래치 필름.
- 제2항에 있어서,상기 제2레이어는밀도 0.910 내지 0.920g/㎤의 메탈로센 선형 저밀도 폴리에틸렌(mLLDPE); 밀도 0.910 내지 0.920 g/㎤의 저밀도 폴리에틸렌(LDPE); 및 밀도 0.85 내지 0.910 g/㎤의 폴리올레핀 엘라스토머(POE)의 혼합물로 제작되는 것을 특징으로 하는 다층 스트래치 필름.
- 제8항에 있어서,상기 메탈로센 선형 저밀도 폴리에틸렌(mLLDPE)의 중량은 상기 제2레어어 중량의 40 내지 50%로 설정되고,상기 저밀도 폴리에틸렌(LDPE)의 중량은 상기 제2레어어 중량의 10 내지 30%로 설정되며,상기 폴리올레핀 엘라스토머(POE)의 중량은 상기 제2레어어 중량의 10 내지 30%로 설정되는 것을 특징으로 하는 다층 스트래치 필름.
- 제1항에 있어서,상기 제1레이어 및 상기 제2레이어 각각은레이어 중량의 2 내지 4%에 해당하는 에루카마이드(Erucamide)와 저밀도 폴리에틸렌(LDPE)의 혼합물로 제작되는 것을 특징으로 하는 다층 스트래치 필름(multilayer stretch film).
- 제10항에 있어서,상기 에루카마이드의 농도는 농도 300 내지 600ppm으로 설정되는 것을 특징으로 하는 다층 스트래치 필름.
- 제1항에 있어서,상기 제1레이어, 상기 코어 레이어, 및 상기 제2레이어를 관통하는 레이어 관통홀;을 포함하는 것을 특징으로 하는 다층 스트래치 필름(multilayer stretch film).
- 제12항에 있어서,상기 레이어 관통홀은 상기 필름의 너비 방향 또는 상기 필름의 길이 방향을 따라 구비되는 다수의 홀로 구비되는 것을 특징으로 하는 다층 스트래치 필름.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP23914872.9A EP4624153A4 (en) | 2022-09-02 | 2023-03-02 | MULTI-LAYER STRETCH FILM |
| CN202380087977.9A CN120476045A (zh) | 2022-09-02 | 2023-03-02 | 多层拉伸膜 |
Applications Claiming Priority (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20220111236 | 2022-09-02 | ||
| KR10-2023-0000301 | 2023-01-02 | ||
| KR10-2023-0000299 | 2023-01-02 | ||
| KR1020230000299A KR20240032609A (ko) | 2022-09-02 | 2023-01-02 | 다층 스트래치 필름 |
| KR1020230000301A KR20240032611A (ko) | 2022-09-02 | 2023-01-02 | 다층 스트래치 필름 |
| KR1020230000300A KR20240032610A (ko) | 2022-09-02 | 2023-01-02 | 다층 스트래치 필름 |
| KR10-2023-0000300 | 2023-01-02 |
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| Publication Number | Publication Date |
|---|---|
| WO2024147407A1 true WO2024147407A1 (ko) | 2024-07-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KR2023/002858 Ceased WO2024147407A1 (ko) | 2022-09-02 | 2023-03-02 | 다층 스트래치 필름 |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4624153A4 (ko) |
| KR (3) | KR20240032610A (ko) |
| CN (1) | CN120476045A (ko) |
| WO (1) | WO2024147407A1 (ko) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR102825834B1 (ko) * | 2024-10-08 | 2025-06-26 | (주)반도 | 대전방지 기능을 갖는 스트레치 필름의 제조방법 |
| KR102829453B1 (ko) * | 2024-10-08 | 2025-07-04 | (주)반도 | 재생 수지를 포함하는 대전방지 스트레치 필름의 제조방법 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009132081A (ja) * | 2007-11-30 | 2009-06-18 | Three M Innovative Properties Co | 伸縮性積層体及びそれを用いた物品 |
| JP2014087948A (ja) * | 2012-10-29 | 2014-05-15 | Mitsubishi Plastics Inc | 積層型多孔性フィルムおよびそれを用いた包装体用蓋材 |
| KR101488784B1 (ko) * | 2015-01-06 | 2015-02-11 | 호명화학공업 주식회사 | 방충 열수축 필름 |
| US20170326853A1 (en) * | 2014-10-30 | 2017-11-16 | Dow Global Technologies Llc | Multilayer film and related materials and methods |
| CN108215412A (zh) * | 2016-12-15 | 2018-06-29 | 中国石油化工股份有限公司 | 一种拉伸套管膜组合物和拉伸套管膜及其应用 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012001182A1 (es) * | 2010-07-02 | 2012-01-05 | Dow Global Technologies Llc | Enfundados estirables hechos a partir de formulaciones ricas en uldpe |
| ES2970349T3 (es) * | 2016-10-18 | 2024-05-28 | Dow Global Technologies Llc | Composiciones y estructuras de fundas extensibles multicapa |
| JP7613920B2 (ja) * | 2021-01-13 | 2025-01-15 | タキロンシーアイ株式会社 | 伸縮フィルム |
-
2023
- 2023-01-02 KR KR1020230000300A patent/KR20240032610A/ko active Pending
- 2023-01-02 KR KR1020230000299A patent/KR20240032609A/ko active Pending
- 2023-01-02 KR KR1020230000301A patent/KR20240032611A/ko not_active Ceased
- 2023-03-02 EP EP23914872.9A patent/EP4624153A4/en active Pending
- 2023-03-02 WO PCT/KR2023/002858 patent/WO2024147407A1/ko not_active Ceased
- 2023-03-02 CN CN202380087977.9A patent/CN120476045A/zh active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009132081A (ja) * | 2007-11-30 | 2009-06-18 | Three M Innovative Properties Co | 伸縮性積層体及びそれを用いた物品 |
| JP2014087948A (ja) * | 2012-10-29 | 2014-05-15 | Mitsubishi Plastics Inc | 積層型多孔性フィルムおよびそれを用いた包装体用蓋材 |
| US20170326853A1 (en) * | 2014-10-30 | 2017-11-16 | Dow Global Technologies Llc | Multilayer film and related materials and methods |
| KR101488784B1 (ko) * | 2015-01-06 | 2015-02-11 | 호명화학공업 주식회사 | 방충 열수축 필름 |
| CN108215412A (zh) * | 2016-12-15 | 2018-06-29 | 中国石油化工股份有限公司 | 一种拉伸套管膜组合物和拉伸套管膜及其应用 |
Non-Patent Citations (2)
| Title |
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| no. 112-84-5 |
| See also references of EP4624153A1 |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20240032609A (ko) | 2024-03-12 |
| KR20240032610A (ko) | 2024-03-12 |
| EP4624153A1 (en) | 2025-10-01 |
| CN120476045A (zh) | 2025-08-12 |
| KR20240032611A (ko) | 2024-03-12 |
| EP4624153A4 (en) | 2026-03-04 |
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