JP7441515B2 - Manufacturing method for recycled film - Google Patents
Manufacturing method for recycled film Download PDFInfo
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- JP7441515B2 JP7441515B2 JP2020159391A JP2020159391A JP7441515B2 JP 7441515 B2 JP7441515 B2 JP 7441515B2 JP 2020159391 A JP2020159391 A JP 2020159391A JP 2020159391 A JP2020159391 A JP 2020159391A JP 7441515 B2 JP7441515 B2 JP 7441515B2
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- film
- recycled
- recycled film
- pet bottle
- present
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- 238000004519 manufacturing process Methods 0.000 title claims description 14
- 239000002994 raw material Substances 0.000 claims description 12
- 229920006302 stretch film Polymers 0.000 claims description 11
- 239000004743 Polypropylene Substances 0.000 claims description 10
- -1 polypropylene Polymers 0.000 claims description 10
- 229920001155 polypropylene Polymers 0.000 claims description 10
- 238000000465 moulding Methods 0.000 claims description 9
- 229920001903 high density polyethylene Polymers 0.000 claims description 6
- 239000004700 high-density polyethylene Substances 0.000 claims description 6
- 239000012748 slip agent Substances 0.000 claims description 5
- 229920001684 low density polyethylene Polymers 0.000 claims description 4
- 239000004702 low-density polyethylene Substances 0.000 claims description 4
- 238000005453 pelletization Methods 0.000 claims 1
- 238000000034 method Methods 0.000 description 10
- 229920005989 resin Polymers 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- 239000008188 pellet Substances 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 239000004566 building material Substances 0.000 description 2
- 229920000092 linear low density polyethylene Polymers 0.000 description 2
- 239000004707 linear low-density polyethylene Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 239000010779 crude oil Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000011342 resin composition Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000012265 solid product Substances 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
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- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Description
本発明は、再生フィルムの製造方法に関する。詳しくは、使用済みの樹脂からなる再生フィルムの製造方法に関する。 The present invention relates to a method for producing recycled film. More specifically, the present invention relates to a method for manufacturing a recycled film made of used resin.
従来、ポリプロピレン樹脂成形体廃棄物、特にペットボトルのキャップに使用されているポリプロピレン樹脂成形体の廃棄物の有効な再利用方法として、ペットボトルのキャップに使用されているポリプロピレン樹脂成形体の廃棄物を主成分とする原料１００質量部に対して、１～１２質量部のエラストマーと１～５質量部の二酸化チタンを加えて樹脂混合物とした後、該樹脂混合物を加熱溶融することによりチャイルドシート製造用の再生熱可塑性樹脂組成物とする再利用方法が提案されている（特許文献１）。 Conventionally, waste polypropylene resin moldings used for PET bottle caps are an effective way to recycle waste polypropylene resin moldings, especially waste polypropylene resin moldings used for PET bottle caps. 1 to 12 parts by mass of elastomer and 1 to 5 parts by mass of titanium dioxide are added to 100 parts by mass of the raw material mainly composed of A method of reusing a recycled thermoplastic resin composition has been proposed (Patent Document 1).
さらに、ポリプロピレン（Ｐ．Ｐ）であるペットボトルの蓋及び貝殻といった全ての廃材を利用することにより、安価で且つ再度のリサイクル可能な建材の製造方法が提案されている（特許文献２）。 Furthermore, a method for manufacturing inexpensive and recyclable building materials has been proposed by using all waste materials such as PET bottle caps and shells made of polypropylene (P.P.) (Patent Document 2) .
前記の提案は、いずれも使用済みのペットボトルのキャップを再利用するものであるが、その再利用範囲はペットボトル本体の再利用範囲に比べて極めて狭く、具体的には、押出成形や金型成形による再生品に限られ、例えば、前記のチャイルドシートや建材などの固体品に限られていた。 The above-mentioned proposals all reuse the caps of used PET bottles, but the range of reuse is extremely narrow compared to the range of reuse of PET bottles themselves. It has been limited to recycled products made by molding, such as solid products such as child seats and building materials.
前記事情に鑑み、本発明は、使用済みのペットボトルのキャップの再利用範囲を広げること、そのために使用済みのペットボトルのキャップと他の樹脂とを再利用する再生フィルムの製造方法を提供することを目的とする。本発明で得られる再生フィルムは、例えば、製袋により各種の袋として、その他、包装資材などとして広い利用範囲を有する。 In view of the above circumstances, the present invention aims to expand the range of reuse of used PET bottle caps, and for this purpose provides a method for producing a recycled film that reuses used PET bottle caps and other resins. The purpose is to The recycled film obtained by the present invention has a wide range of uses, for example, as various bags by bag making, and as packaging materials.
前記課題を解決する本発明の再生フィルムの製造方法は、主に低密度ポリエチレンからなる使用済みのストレッチフィルムと、高密度ポリエチレン及びポリプロピレンからなる使用済みのペットボトルのキャップをそれぞれ粉砕及びリペレット化により原料化し、それぞれの原料を配合及びスリップ剤を加えてインフレーション成形により形成することを特徴とする（請求項１）。 The method for manufacturing a recycled film of the present invention which solves the above problems is to crush and re-pelletize used stretch film mainly made of low density polyethylene and used PET bottle caps mainly made of high density polyethylene and polypropylene. It is characterized in that it is made into raw materials, blended with each raw material , added with a slip agent, and formed by inflation molding (claim 1).
前記使用済みのストレッチフィルムは、主に低密度ポリエチレン（ＬＬＤＰＥ）製フィルムである。また、前記使用済みのペットボトルのキャップは、高密度ポリエチレン（ＨＤＰＥ）とポリプロピレン（ＰＰ）である。本発明の再生フィルムの製造方法は前記の原料からなりインフレーション成形により形成される。 The used stretch film is mainly a film made of low density polyethylene (LLDPE). Moreover, the cap of the used PET bottle is made of high density polyethylene (HDPE) and polypropylene (PP). The method for manufacturing the recycled film of the present invention is to form the recycled film from the above-mentioned raw materials by inflation molding.
本発明の一実施例は、前記使用済みのストレッチフィルムが６８％であり、前記使用済みのペットボトルのキャップが３０％であり、前記スリップ剤が２％であることを特徴とする（請求項２）。この配合割合によれば、一般に提供されているバージンポリエチレンフィルムと略同等の薄肉化と強度を有する再生フィルムを提供することができる。 One embodiment of the present invention is characterized in that the used stretch film is 68%, the used PET bottle cap is 30%, and the slip agent is 2%. 2). According to this blending ratio, it is possible to provide a recycled film that has a thinner thickness and strength that is approximately equivalent to that of virgin polyethylene films that are generally available.
前記の製造方法によれば、使用済みのペットボトルのキャップを原料とする再生フィルムを製造することができる。 According to the above manufacturing method, it is possible to manufacture a recycled film using the caps of used PET bottles as raw materials .
本発明によれば、使用済みのストレッチフィルムと再利用範囲の狭い使用済みのペットボトルのキャップを再利用して広い利用範囲を有する再生フィルムを提供することができる。 According to the present invention, it is possible to recycle used stretch films and used PET bottle caps, which have a narrow range of reuse, to provide a recycled film that has a wide range of use.
さらに、結果として、原料からバージンポリエチレンフィルムを製造する場合のナフサに精製する工程等が不要であり、さらに原油の使用量が削減されるとともに環境負荷を低く抑えることができる。 Furthermore, as a result, the process of refining into naphtha when producing virgin polyethylene film from raw materials is not necessary, and the amount of crude oil used can be reduced and the environmental impact can be kept low.
以下に、図面は本発明の再生フィルムの製造方法を示すフロー図であるが、製袋加工工程を連係させて示している。
第１工程：使用済み原料の準備（回収）工程である。
The drawings below are flowcharts showing the method for producing recycled film of the present invention, and the bag-making process is shown in conjunction with the drawings.
1st step: This is a used raw material preparation (recovery) step.
本発明で使用される使用済みの原料は、使用済みのストレッチフィルムと使用済みのペットボトルのキャップである。前記使用済みのストレッチフィルムは主に低密度ポリエチレン（ＬＬＤＰＥ）である。また、前記使用済みのペットボトルのキャップは高密度ポリエチレン（ＨＤＰＥ）及びポリプロピレン（ＰＰ）である。なお、前記キャップは材質、色ごと分別する必要はない。
第２工程：原料の粉砕工程である。
The used raw materials used in the present invention are used stretch films and used PET bottle caps. The used stretch film is mainly low density polyethylene (LLDPE). Further, the caps of the used PET bottles are made of high density polyethylene (HDPE) and polypropylene (PP). Note that the caps do not need to be sorted by material or color.
Second step: This is a step of pulverizing the raw material.
ストレッチフィルムは、ベール状又はまとめられた使用済みのものをほぐしながら異物及び汚れを除去した後、公知のプラスチック粉砕機を使用して５～１０ｍｍに切断した。 The stretch film was used in the form of a bale or in a bundle, which was loosened to remove foreign matter and dirt, and then cut into pieces of 5 to 10 mm using a known plastic crusher.
ペットボトルのキャップは、回収された使用済みのものは臭気・汚れによって洗浄・脱水等の後、公知のプラスチック粉砕機を使用して５～１０ｍｍの粒径に粉砕した。
第３工程：リペレット工程である。
The collected used PET bottle caps were cleaned and dehydrated to remove odor and dirt, and then crushed into particles with a particle size of 5 to 10 mm using a known plastic crusher.
Third step: This is a re-pellet step.
粉砕されたストレッチフィルム及びペットボトルのキャップをそれぞれ別々に加熱溶融し、フィルターを通して異物を除去して造粉してペレットに成形した。
第４工程：原料配合工程である。
The crushed stretch film and PET bottle cap were heated and melted separately, passed through a filter to remove foreign matter, and then powdered and formed into pellets.
Fourth step: This is a raw material blending step.
ストレッチフィルムのペレット６８%、使用済みのペットボトルのペレット３０％を配合し、製造効率を高めるためスリップ剤２％を加えた。
第５工程：インフレーション成形工程である。
The blend consisted of 68% stretch film pellets and 30% used PET bottle pellets, and 2% slip agent was added to increase production efficiency.
Fifth step: This is an inflation molding step.
公知のインフレーション成形機を使用してフィルム原反を製造した。なお、単層及び多層フィルムの製造も可能である。
第６工程：製袋工程
A film material was produced using a known inflation molding machine. It should be noted that it is also possible to produce single-layer and multilayer films.
6th process: Bag making process
製袋機を使用して再生フィルム１００％のポリ袋を製造した。 A plastic bag made of 100% recycled film was manufactured using a bag making machine.
前記の工程を経て得られた再生フィルムの引っ張り強度、伸び率、ヒートシール強度を確認した結果は図２の通りである。また、図３はＪＩＳ Ｚ１７０２－１９９４（参考適合値）を示す表であり、図４はＪＩＳＺ１７１１－１９９４（ヒートシール値）を示す表である。 The results of checking the tensile strength, elongation rate, and heat sealing strength of the recycled film obtained through the above steps are shown in FIG. 2. Further, FIG. 3 is a table showing JIS Z1702-1994 (reference compliance value), and FIG. 4 is a table showing JIS Z1711-1994 (heat sealing value).
以下に、本発明で得られた再生フィルムとＪＩＳ規格値を比較する。 Below, the recycled film obtained by the present invention and the JIS standard values will be compared.
引っ張り強度の数値は、本発明で得られた再生フィルムは、縦：３２．４Ｍｐa、横:２８．８Ｍｐａに対して、ＪＩＳ規格では、１６．７Ｍｐａである。 The tensile strength of the recycled film obtained in the present invention is 32.4 Mpa in length and 28.8 Mpa in width, while it is 16.7 Mpa according to the JIS standard.
また、伸び率の数値は、本発明で得られた再生フィルムは、３２２．４７５％であるのに対して、ＪＩＳ規格では、２５０％である。 Furthermore, the elongation rate of the recycled film obtained by the present invention is 322.475%, whereas it is 250% according to the JIS standard.
また、ヒートシールの数値は、本発明で得られた再生フィルムは、６．３８Ｎであるのに対して、ＪＩＳ規格では、４．５１Ｎである。 Furthermore, the value of heat sealing is 6.38N for the recycled film obtained in the present invention, whereas it is 4.51N according to the JIS standard.
上記の通り、本発明で得られた再生フィルムは、ＪＩＳ規格に適合することが確認された。 As mentioned above, it was confirmed that the recycled film obtained by the present invention complies with JIS standards.
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Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020159391A JP7441515B2 (en) | 2020-09-24 | 2020-09-24 | Manufacturing method for recycled film |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020159391A JP7441515B2 (en) | 2020-09-24 | 2020-09-24 | Manufacturing method for recycled film |
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| Publication Number | Publication Date |
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| JP2022052882A JP2022052882A (en) | 2022-04-05 |
| JP7441515B2 true JP7441515B2 (en) | 2024-03-01 |
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| JP2020159391A Active JP7441515B2 (en) | 2020-09-24 | 2020-09-24 | Manufacturing method for recycled film |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2024121553A (en) * | 2023-02-27 | 2024-09-06 | 東洋製罐株式会社 | Sealant Film |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000017085A (en) | 1998-07-02 | 2000-01-18 | Okura Ind Co Ltd | Plastic film using fly ash |
| JP2004018592A (en) | 2002-06-13 | 2004-01-22 | Fukuvi Chem Ind Co Ltd | Profile extrusion molded building material |
| JP2006298960A (en) | 2005-04-15 | 2006-11-02 | Inabata & Co Ltd | Reclaimed film and method for producing the same |
| JP2008112454A (en) | 2002-04-24 | 2008-05-15 | Teijin Fibers Ltd | Recycle system |
| JP2011226261A (en) | 2011-06-03 | 2011-11-10 | Akita Eco Plash Co Ltd | Block member for rainwater storage tank |
| JP2012229355A (en) | 2011-04-27 | 2012-11-22 | Asahi Kasei Chemicals Corp | Polyethylene resin composition having excellent moldability and long term property and suitable for bottle cap, and bottle cap |
| JP2017136816A (en) | 2016-02-02 | 2017-08-10 | 宇部興産株式会社 | Method for reusing waste of polypropylene resin molded body |
-
2020
- 2020-09-24 JP JP2020159391A patent/JP7441515B2/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000017085A (en) | 1998-07-02 | 2000-01-18 | Okura Ind Co Ltd | Plastic film using fly ash |
| JP2008112454A (en) | 2002-04-24 | 2008-05-15 | Teijin Fibers Ltd | Recycle system |
| JP2004018592A (en) | 2002-06-13 | 2004-01-22 | Fukuvi Chem Ind Co Ltd | Profile extrusion molded building material |
| JP2006298960A (en) | 2005-04-15 | 2006-11-02 | Inabata & Co Ltd | Reclaimed film and method for producing the same |
| JP2012229355A (en) | 2011-04-27 | 2012-11-22 | Asahi Kasei Chemicals Corp | Polyethylene resin composition having excellent moldability and long term property and suitable for bottle cap, and bottle cap |
| JP2011226261A (en) | 2011-06-03 | 2011-11-10 | Akita Eco Plash Co Ltd | Block member for rainwater storage tank |
| JP2017136816A (en) | 2016-02-02 | 2017-08-10 | 宇部興産株式会社 | Method for reusing waste of polypropylene resin molded body |
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