JPS63202409A - Method for peeling off laminated film - Google Patents
Method for peeling off laminated filmInfo
- Publication number
- JPS63202409A JPS63202409A JP62033732A JP3373287A JPS63202409A JP S63202409 A JPS63202409 A JP S63202409A JP 62033732 A JP62033732 A JP 62033732A JP 3373287 A JP3373287 A JP 3373287A JP S63202409 A JPS63202409 A JP S63202409A
- Authority
- JP
- Japan
- Prior art keywords
- laminated film
- film
- laminated
- surface layers
- water
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000002344 surface layer Substances 0.000 claims abstract description 34
- 239000010410 layer Substances 0.000 claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 238000010008 shearing Methods 0.000 claims abstract description 11
- 229920001577 copolymer Polymers 0.000 claims abstract description 10
- 229920005992 thermoplastic resin Polymers 0.000 claims abstract description 9
- 229920000098 polyolefin Polymers 0.000 claims abstract description 6
- 239000004840 adhesive resin Substances 0.000 claims description 12
- 229920006223 adhesive resin Polymers 0.000 claims description 12
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 229920005989 resin Polymers 0.000 abstract description 13
- 239000011347 resin Substances 0.000 abstract description 13
- 239000012790 adhesive layer Substances 0.000 abstract description 3
- 238000010030 laminating Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 3
- 238000004026 adhesive bonding Methods 0.000 abstract 1
- 239000004744 fabric Substances 0.000 abstract 1
- -1 polyethylene Polymers 0.000 description 6
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 229920001684 low density polyethylene Polymers 0.000 description 3
- 239000004702 low-density polyethylene Substances 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 235000019198 oils Nutrition 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 229920001155 polypropylene Polymers 0.000 description 3
- 239000011342 resin composition Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 2
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 150000001336 alkenes Chemical class 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 229920000092 linear low density polyethylene Polymers 0.000 description 2
- 239000004707 linear low-density polyethylene Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 2
- 229920000915 polyvinyl chloride Polymers 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 241000283986 Lepus Species 0.000 description 1
- 229920002367 Polyisobutene Polymers 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- AGXUVMPSUKZYDT-UHFFFAOYSA-L barium(2+);octadecanoate Chemical compound [Ba+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O AGXUVMPSUKZYDT-UHFFFAOYSA-L 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000006084 composite stabilizer Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009820 dry lamination Methods 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 125000002573 ethenylidene group Chemical group [*]=C=C([H])[H] 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 229920000554 ionomer Polymers 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 1
- XIVNZHXRIPJOIZ-UHFFFAOYSA-N octadecanoic acid;zinc Chemical compound [Zn].CCCCCCCCCCCCCCCCCC(O)=O XIVNZHXRIPJOIZ-UHFFFAOYSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 229920001748 polybutylene Polymers 0.000 description 1
- 229920000306 polymethylpentene Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000010526 radical polymerization reaction Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 235000012424 soybean oil Nutrition 0.000 description 1
- 239000003549 soybean oil Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/02—Separating plastics from other materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
- B29C63/0004—Component parts, details or accessories; Auxiliary operations
- B29C63/0013—Removing old coatings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/04—Disintegrating plastics, e.g. by milling
- B29B17/0412—Disintegrating plastics, e.g. by milling to large particles, e.g. beads, granules, flakes, slices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/02—Separating plastics from other materials
- B29B2017/0203—Separating plastics from plastics
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2007/00—Flat articles, e.g. films or sheets
- B29L2007/008—Wide strips, e.g. films, webs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2009/00—Layered products
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
- Laminated Bodies (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
Abstract
Description
【発明の詳細な説明】
「産業上の利用分野」
本発明は積層フィルムの剥離方法に関する。更に詳しく
は、特定の接着剤層を介しで、特定の熱可塑性樹脂から
成る表面層を積層してなる、３層積層フィルムの両表面
層を剥離する方法に関する。DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a method for peeling a laminated film. More specifically, the present invention relates to a method of peeling both surface layers of a three-layer laminated film formed by laminating surface layers made of a specific thermoplastic resin via a specific adhesive layer.
「従来の技術」
我国において使用されている熱可塑性樹脂の中にはポリ
塩化ビニル、ポリエチレン、ポリスチレン、ポリプロピ
レンの四人汎用樹脂がある。``Prior Art'' Among the thermoplastic resins used in Japan, there are four general-purpose resins: polyvinyl chloride, polyethylene, polystyrene, and polypropylene.
この中で、その量の多い点でポリ塩化ビニルとポリエチ
レンがその双壁といえる。これらはいずれもその優れた
性能と安い価格が高く評価されている。たとえば、塩化
ビニル樹脂は種々の添加剤との相溶性が良いこと、硬質
製品から超軟質フィルムまでの品質設計が可能であるこ
と、添加剤の種類を変更することで種々の特性が付与で
きること、また酸素、窒素、炭酸がスなどの、気体を通
過させ難い、いわゆる〃スバリャ性を有すること等、非
常に多様性があり、広範囲の用途がある。Among these, polyvinyl chloride and polyethylene can be said to be the two largest in terms of their large amounts. All of these are highly praised for their excellent performance and low prices. For example, vinyl chloride resin has good compatibility with various additives, quality can be designed from hard products to ultra-soft films, and various properties can be imparted by changing the types of additives. In addition, it has a very diverse property and has a wide range of uses, such as having a so-called "sparyan property" that makes it difficult for gases such as oxygen, nitrogen, and carbon dioxide to pass through.
一方ポリエチレンは原料の入手の容易性、耐寒性、防湿
性、耐薬品性、耐熱性、耐擦傷性等を有しており、ポリ
スチレンは剛′性、耐熱性、透明性等を有しており、更
にポリプロピレンは防湿性、耐熱性、耐擦傷性等を有す
る等、それぞれ広範囲の用途がある。On the other hand, polyethylene has easy availability of raw materials, cold resistance, moisture resistance, chemical resistance, heat resistance, scratch resistance, etc., while polystyrene has rigidity, heat resistance, transparency, etc. Furthermore, polypropylene has moisture resistance, heat resistance, scratch resistance, etc., and has a wide range of uses.
しかしこれら１種類の材料では得られない更に多様の性
能を備えた材料を得るためには、これらの樹脂フィルム
を積層化することが行われる。現在、このような積層フ
ィルムを得る方法としでは、押し出しラミネーシ廖ン、
ドライラミネーシ層ン等のラミネーシａン方法及び、二
層以上のプラスチックスを熱熔融時にグイ内で熱融着さ
せて複合フィルムとするいわゆる共押し出し法がおこな
われている。これら積層フィルムは１．用途に合わせて
厚み、巾、長さを規格し生産されるが、製品とならない
積層品、例えば、巾を揃えるためにスリットした耳部は
、廃プラスチックとして土中に埋めるか、または、安価
に売却するかの処理をしており、歩留りが悪く、利益減
につながる問題があった。However, in order to obtain materials with more diverse performances that cannot be obtained with a single type of material, these resin films are laminated. Currently, the methods for obtaining such laminated films include extrusion lamination,
Lamination methods such as dry lamination, and so-called co-extrusion methods in which two or more layers of plastics are thermally fused in a goo during hot melting to form a composite film have been carried out. These laminated films are: 1. Laminated products that are produced with standardized thickness, width, and length according to the intended use, but do not become products, such as ears that have been slit to make the width uniform, are buried in the ground as waste plastic or are sold at low cost. The company was in the process of selling the product, and there were problems with poor yields and decreased profits.
［発明が解決しようとする問題点］
本発明者等は、例えば軟質塩化ビニル系樹脂層とポリオ
レフィンＰ、樹脂層とを接着樹脂層を介して積層した３
層から構成されるフィルムについて、この＊までは再生
利用できないという問題があるため、特定の接着剤層を
介して特定の熱可塑性樹脂から成る表面層を積層してな
る３層フィルムの両表面層を剥離する方法について鋭意
研究を重ねた結果、本発明に到達したものである。[Problems to be Solved by the Invention] The present inventors have proposed, for example, 3 in which a soft vinyl chloride resin layer, polyolefin P, and a resin layer are laminated via an adhesive resin layer.
Regarding films composed of layers, there is a problem that up to this point * cannot be recycled, so both surface layers of a three-layer film made by laminating surface layers made of a specific thermoplastic resin via a specific adhesive layer. The present invention was developed as a result of intensive research into methods for peeling off the .
「問題点を解決するための手段」
本発明の要曽は、見掛けの粘度が１００℃で１０ ’
ｐｏｉｓｅ未満のオレフィン−酢酸ビニル共重合体また
はオレフィン−エチルアクリレート共重合体またはこれ
らの変成ポリオレフィンから成る接着樹脂層を介して、
見掛けの粘度が１００℃で１０ ’ ｐｏｉｓｅ以上の
水に対して膨潤しない熱可塑性樹脂から成る表面層が積
層されている積層フィルムに、１００℃付近に加熱され
た水又は空気中で剪断力を働かせて、両表面層を剥離す
ることを特徴とする積層フィルムの剥離方法にある。"Means for Solving the Problems" The key point of the present invention is that the apparent viscosity is 10' at 100°C.
Through an adhesive resin layer made of an olefin-vinyl acetate copolymer or an olefin-ethyl acrylate copolymer or a modified polyolefin thereof,
A shearing force is applied to a laminated film on which a surface layer made of a thermoplastic resin that does not swell in water and has an apparent viscosity of 10' poise or more at 100°C is laminated in water or air heated to around 100°C. The method of peeling a laminated film is characterized in that both surface layers are peeled off.
以下に本発明の詳細な説明する。The present invention will be explained in detail below.
本発明の方法を利用で゛きる積層フィルムの接着樹脂層
を構成する樹脂としては、オレフィンと酢酸ビニルの共
重合体またはオレフィンとエチルアクリレートの共重合
体またはこれらの変成ポリオレフィンであり、中でも高
圧下でラジカル重合することにより得られるエチレンと
酢酸ビニル共重合体が好ましい、この場合、酢酸ビニル
含有濃度は２５乃至４１−ｔ％が特に好ましい、更に接
着樹脂層は、１００℃での見掛けの粘度が１０ ’ｐｏ
ｉｓｅ未満であることが必要である。１０４〜１０６ｐ
ｏｉｓｅはデル状態であり樹脂を裂くことが比較的容易
な粘度であるが、一方１０６〜１０・ｐｏｉｓｅはゲル
状態から軟化状態の中間、１０＠〜１０マｐｏｉｓｅは
軟化状態でいわゆる腰のある状態であり、樹脂を裂（事
が容易ではない。The resin constituting the adhesive resin layer of the laminated film that can be used in the method of the present invention is a copolymer of olefin and vinyl acetate, a copolymer of olefin and ethyl acrylate, or a modified polyolefin thereof. An ethylene and vinyl acetate copolymer obtained by radical polymerization is preferred. In this case, the vinyl acetate content concentration is particularly preferably 25 to 41-t%. Furthermore, the adhesive resin layer has an apparent viscosity at 100°C. 10'po
It is necessary that the value be less than .ise. 104-106p
oise is a del state and has a viscosity that makes it relatively easy to tear the resin, while 106~10 Poise is between a gel state and a softened state, and 10@~10 mpoise is a soft state with a so-called stiff state. It is not easy to tear the resin.
又、接着樹脂屑の厚味は０．００５ｍｍ以上である事が
好ましい、０．００５ｍ＋ｓ未満であると剪断力を加え
ても接着樹脂層が、切断しにくく、表面層が剥離しない
ので好ましくない。Further, the thickness of the adhesive resin scrap is preferably 0.005 mm or more; if it is less than 0.005 m+s, the adhesive resin layer is difficult to cut even when shearing force is applied, and the surface layer does not peel off, which is not preferable.
本発明の方法を利用できる積層フィルムにおいて接着樹
脂層を介して積層する表面層に用いる熱可塑性樹脂とし
ては、低密度ポリエチレン、線状低密度ポリエチレン、
高密度ポリエチレン、ポリプロピレン、ポリブテン（１
）、ポリ−４−メチルペンテン（１）、ポリイソブチレ
ンおよびそれらの共重合体等のポリオレフィン、アイオ
ノマー樹脂、塩化ビニル系樹脂組成物及び７ツ化ビニリ
デン系樹脂等があげられる。中でも低密度ポリエチレン
、線状低密度ポリエチレン及び塩化ビニル系樹脂組成物
が特に好ましい、更に表面層は１００℃での見掛けの粘
度が１０１ｐｏｉｓｅ以上であり水に対して膨潤しない
ことが必要である０表面層は、見掛けの粘度が１０ ’
ｐｏｉｓｅ未満であったり、水に対して膨潤する熱可
塑性樹脂であると、剪断力を加えた時、表面層が切断す
る可能性があるので好ましくない、又、表面層の厚味は
０．００５ｍｍ未満であるとやはり剪断力を加えた時、
表面層が切断してしまう可能性があるので、０．００５
ｍｍ以上であるのが好ましい。In the laminated film that can be used in the method of the present invention, the thermoplastic resin used for the surface layer laminated via the adhesive resin layer includes low density polyethylene, linear low density polyethylene,
High density polyethylene, polypropylene, polybutene (1
), polyolefins such as poly-4-methylpentene (1), polyisobutylene and copolymers thereof, ionomer resins, vinyl chloride resin compositions, and vinylidene heptadide resins. Among them, low-density polyethylene, linear low-density polyethylene, and vinyl chloride resin compositions are particularly preferred.Furthermore, the surface layer must have an apparent viscosity of 101 poise or more at 100°C and not swell with water. The layer has an apparent viscosity of 10'
If it is less than poise or if it is a thermoplastic resin that swells in water, the surface layer may be cut when shearing force is applied, so it is not preferable, and the thickness of the surface layer is 0.005 mm. If it is less than that, when shearing force is applied,
0.005 as the surface layer may be cut.
It is preferable that it is more than mm.
なお、本発明における見掛けの粘度は定衡重式細孔押し
流れｔ１％験磯に゛より以下の計算で求められる。Incidentally, the apparent viscosity in the present invention is determined by the following calculation based on an isostatic weight type fine-pore pushing flow t1% experiment.
πＲ４Ｐ
見掛＋＋＋７）粘度Ｖ ｒ ＝ Ｂ Ｅ、 Ｑ 、（
ｐｏｉｓｅ）Ｐ ：試験圧力（ｄｙｎｅ／ａｍ”）
Ｌ ：グイ（ノズル）長！（ｃ輪）
Ｒ：グイ（ノズル）半径（ｅｓｉ）
ΔＸ
Ｑ”Ａｔ Ａ流れ値（ｍｌ／５）
（Ａ：ピストン（プランジャ）の表面積）ΔＸ：測定ス
トローク（Ｃ曽）
Δｔ：計測時間（ｓｅｅ）
本発明は、上記の様な接着樹脂層及び表面層からなる３
層積層フィルムに１００℃付近まで加熱された熱媒中で
、剪断力を働かせて、表面層を剥離するものである。πR4P Apparent +++7) Viscosity V r = B E, Q, (
poise) P: Test pressure (dyne/am”) L: Nozzle length! (C ring) R: Nozzle radius (esi) ΔX Q”At A flow value (ml/5) (A: Piston (Surface area of plunger) ΔX: Measurement stroke (Cso) Δt: Measurement time (see)
A shearing force is applied to the laminated film in a heating medium heated to around 100°C to peel off the surface layer.
本発明において、熱媒としては熱水又は空気が好ましく
、中でも熱水が特に好ましい。In the present invention, the heating medium is preferably hot water or air, with hot water being particularly preferred.
例えば油性の熱媒であると、分離したフィルムに付着し
た油分を取りのぞくことが困難であり、又低沸点の有Ｗ
ＳＷの多くは引火の危険性が太き（作業環境の汚染問題
も発生するので好ましくなし１゜
本発明において、積層フィルムに剪断力を働かせる方式
としては、積層フィルムを、お互いに周速度の異なる対
接するロールの間隙を通過させることによるのが好まし
い、又、更には、この時、ロールの表面を凹凸状に形成
する事により、フィルムのスリップを防止することがで
きる。For example, if an oil-based heating medium is used, it is difficult to remove the oil that adheres to the separated film, and it is difficult to remove the oil that adheres to the separated film.
Most of the SWs have a high risk of ignition (which is not desirable as they also cause problems of contamination of the working environment).1 In the present invention, the method of applying shearing force to the laminated film is to separate the laminated films at different peripheral speeds It is preferable to pass the film through a gap between opposing rolls. Furthermore, at this time, slipping of the film can be prevented by forming the surface of the roll into an uneven shape.
「実施例」及び「比較例］ 以下に本発明を実施例を用いて詳細に説明する。"Example" and "Comparative example" The present invention will be explained in detail below using examples.
実施例及び比較例で用いた積層フィルムを構成する樹脂
、その見掛けの粘度及び厚味は以下に表−１にまとめた
通りである。なお、見掛けの粘度は島津７０−テスター
（ＦＴ−５００形）を用いて３０ ｋｇｌ ｃ論２荷重
下にｌｌｌ−φ、長さ５論−のノズルを使用し測定した
。The resins constituting the laminated films used in Examples and Comparative Examples, and their apparent viscosity and thickness are summarized in Table 1 below. The apparent viscosity was measured using a Shimadzu 70 tester (model FT-500) under a load of 30 kgl C2, using a nozzle of lll-φ and 50 mm length.
表 −１
□□□□□□−一
（単位ｐｏｉｓｅ）
車３ 軟質塩化ビニル系樹脂組成物
ＤＯＰ ６０
エポキシ化大豆油 ５
Ｂａ−Ｚｎ系液状複合安定剤２重量部
ステアリン酸バリウム ０．５
ステアリン酸亜鉛 ０．５
表−１に示した２種類の積層フィルムの表面層の剥離を
以下のようにして試みた。以下第１図を用いて説明する
。Table-1 □□□□□□-1 (unit: poise) Car 3 Soft vinyl chloride resin composition DOP 60 Epoxidized soybean oil 5 Ba-Zn liquid composite stabilizer 2 parts by weight Barium stearate 0.5 Stearic acid Zinc 0.5 Peeling of the surface layer of the two types of laminated films shown in Table 1 was attempted as follows. This will be explained below using FIG.
図中、１，２．２１，２２，２３．２４，２５．２６は
ロール、３〜２０は門凸表面ロール、２７は積層フィル
ム、２８は接着樹脂層、２９．３０は表面層、３１は水
槽、３２は熱水をそれぞれ示す。In the figure, 1, 2, 21, 22, 23, 24, 25, 26 are rolls, 3 to 20 are gate convex surface rolls, 27 is a laminated film, 28 is an adhesive resin layer, 29.30 is a surface layer, 31 is a A water tank and 32 indicate hot water, respectively.
まず、積層フィルム２７はロール１より、水槽３０内に
導かれる。水槽中の熱水３２は９５℃〜１００℃に温度
調節されている。積層フィルムはさらに案内ロール２を
通り、３〜２０の表面が四凸に形成されたロールの間隙
を通過する。この時、３〜２０の門凸表面ロールの対接
するロール群、例エバロール３とロール４，５．６ある
いはロール７とロール８．９．１０はお互いに異なった
周速度で回転しており、そのため積層フィルムに剪断力
が働く、これにより、熱水中でデル状態となった接着樹
脂層を境に表面層２９と表面層３０がずれて剥離する。First, the laminated film 27 is guided into the water tank 30 from the roll 1. The temperature of the hot water 32 in the water tank is adjusted to 95°C to 100°C. The laminated film further passes through guide rolls 2 and through gaps between rolls 3 to 20, each of which has four convex surfaces. At this time, the opposing roll groups of 3 to 20 convex surface rolls, such as Eva roll 3 and rolls 4, 5.6, or roll 7 and rolls 8, 9, and 10, are rotating at different circumferential speeds, Therefore, a shearing force acts on the laminated film, and as a result, the surface layer 29 and the surface layer 30 are shifted and peeled off at the adhesive resin layer which has become delta in the hot water.
この剥離された間隙に熱水が浸透することで両表面層の
界面の接着性がさまたげられ、この工程を、複数のロー
ル群で繰り返し行うことにより、積層フィルムは完全に
、表面層２９と３０の各々のフィルムに分離し、それぞ
れロール２１〜２５に導かれる。Hot water permeates into the gap between the peeled surfaces, which impairs the adhesion at the interface between the two surface layers, and by repeating this process with multiple roll groups, the laminated film is completely bonded between the surface layers 29 and 30. are separated into each film and guided to rolls 21 to 25, respectively.
以上の方法に従って、積層フィルムの表面層の剥離を試
みたところｓ、−１における実施例の積層フィルムは、
表面層を剥離できたが、比較例の積層フィルムは表面層
の一方、すなわち低密度ポリエチレン層が途中で切れて
しまい剥離で訃なかりた。When attempting to peel off the surface layer of the laminated film according to the above method, the laminated film of Example s, -1 had the following results:
Although the surface layer was able to be peeled off, one of the surface layers, that is, the low-density polyethylene layer, of the laminated film of the comparative example was cut in the middle, and the film did not peel off.
更に比較例として、実施例で用いた積層フィルムを、水
槽中の温度を６０℃とした以外は前記と同様の方法で表
面層を剥離しようとしたところ、剥離することはできな
かった。Further, as a comparative example, when an attempt was made to peel off the surface layer of the laminated film used in the example in the same manner as described above except that the temperature in the water bath was 60°C, it was not possible to peel off the surface layer.
「発明の効果」
本発明の方法によれば、今まで有効に再利用できなかっ
た異種フィルムが貼り合わされた積層フィルムを効率よ
く剥離することができ、単一種類のフィルム原反乃至フ
ィルム原料として回収できるので工業的価値は大きい。"Effects of the Invention" According to the method of the present invention, a laminated film in which different types of films are bonded together, which could not be effectively reused until now, can be efficiently peeled off, and it can be used as a single type of film base or film raw material. It has great industrial value because it can be recovered.
第１図は本発明の実施態様の１例を示す概略説明図であ
る。
１．２，２１．２２，２３，２４，２５，２６・ロール
３〜２０・・・凹凸表面ロール
２７・・・積層フィルム ２８・・・接着樹脂層２９．
３０・・・表面層
３１・・・水槽 ３２・・・熱水特許出願人
三菱化成ビニル株式会社
代 理 人 弁理士 長谷用 −
（ほか１名）FIG. 1 is a schematic explanatory diagram showing one example of an embodiment of the present invention. 1.2, 21. 22, 23, 24, 25, 26・Rolls 3 to 20... Uneven surface roll 27... Laminated film 28... Adhesive resin layer 29.
30... Surface layer 31... Water tank 32... Hot water patent applicant
Mitsubishi Kasei Vinyl Co., Ltd. Representative Patent Attorney Hase - (1 other person)
Claims (3)
満のオレフィン−酢酸ビニル共重合体またはオレフィン
−エチルアクリレート共重合体またはこれらの変成ポリ
オレフィンから成る接着樹脂層を介して、見掛けの粘度
が１００℃で１０＾６ｐｏｉｓｅ以上の、水に対して膨
潤しない熱可塑性樹脂から成る表面層が積層されている
積層フィルムに、１００℃付近に加熱された水又は空気
中で剪断力を働かせて両表面層を剥離することを特徴と
する積層フィルムの剥離方法。(1) Through an adhesive resin layer made of an olefin-vinyl acetate copolymer or an olefin-ethyl acrylate copolymer or a modified polyolefin thereof, the apparent viscosity of which is less than 10^5 poise at 100°C. A laminated film is laminated with a surface layer made of a thermoplastic resin that does not swell with water and has a poise of 10^6 or more and is heated to around 100°C.A shearing force is applied to the film in water or air heated to around 100℃ to separate both surface layers. A method for peeling a laminated film, characterized by peeling.
れぞれ０．００５ｍｍ以上である特許請求の範囲第１項
記載の積層フィルムの剥離方法。(2) The method for peeling a laminated film according to claim 1, wherein the surface layer and the adhesive resin layer of the laminated film each have a thickness of 0.005 mm or more.
る対接ロールの間隙を通過させることから成る特許請求
の範囲第１項記載の方法。(3) The method according to claim 1, wherein the shearing force is applied by passing through a gap between opposing rolls having different peripheral speeds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62033732A JPS63202409A (en) | 1987-02-17 | 1987-02-17 | Method for peeling off laminated film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62033732A JPS63202409A (en) | 1987-02-17 | 1987-02-17 | Method for peeling off laminated film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63202409A true JPS63202409A (en) | 1988-08-22 |
Family
ID=12394577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62033732A Pending JPS63202409A (en) | 1987-02-17 | 1987-02-17 | Method for peeling off laminated film |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63202409A (en) |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0369341A2 (en) * | 1988-11-14 | 1990-05-23 | Idemitsu Petrochemical Co. Ltd. | Method for recovering scraps of multi-layer plastic sheet or film |
| JPH03102809A (en) * | 1989-09-14 | 1991-04-30 | Toshiba Corp | Disassembling method for molded device |
| US5194109A (en) * | 1988-11-14 | 1993-03-16 | Idemitsu Petrochemical Co., Ltd. | Method for recovering scraps of multi-layer plastic sheet or film |
| US5230944A (en) * | 1991-06-22 | 1993-07-27 | Hoechst Aktiengesellschaft | Laminated material having latent inherent delamination potential |
| US5273701A (en) * | 1991-03-01 | 1993-12-28 | L'air Liquid, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Process to remove a layer of thermoplastic material deposited on a substrate |
| US5304276A (en) * | 1990-06-26 | 1994-04-19 | G. P. Research Ltd. | Method and apparatus for reclaiming gypsum from waste wallboard |
| US5788811A (en) * | 1993-11-08 | 1998-08-04 | Mitsubishi Chemical Corporation | Method and apparatus for peeling coating from coated plastics and method for recycling plastics |
| US5891296A (en) * | 1995-08-25 | 1999-04-06 | Fuji Jukogyo Kabushiki Kaisha | Apparatus and method for peeling and removing a coated film on resin product |
| US5932066A (en) * | 1996-11-01 | 1999-08-03 | Mitsubishi Heavy Industries, Ltd. | Film removing device for resin molded material |
| US6076584A (en) * | 1996-10-04 | 2000-06-20 | Fuji Jukogyo Kabushiki Kaisha | Apparatus for removing coating from coated product |
| JP2001170933A (en) * | 1999-12-16 | 2001-06-26 | Japan Wavelock Co Ltd | Method for separating/recycling thermally fusible multi- layered sheet and separating/recycling device |
| US6338771B1 (en) * | 1997-05-23 | 2002-01-15 | Becker Preservotec Gmbh | Method and device for removing lamination |
| JP2002096327A (en) * | 2000-09-26 | 2002-04-02 | Teijin Ltd | Laminated film separation device and manufacturing method for laminated film |
| JP2008096676A (en) * | 2006-10-11 | 2008-04-24 | Fujifilm Corp | Collecting method of polymer from polarizing plate, manufacturing method of regenerated polymer film and polarizing plate |
| JP2010121134A (en) * | 2008-11-21 | 2010-06-03 | Nitto Denko Corp | Method of detaching attached boards from each other |
| EP2650324A1 (en) * | 2012-04-12 | 2013-10-16 | Linpac Packaging Limited | Method for the Recycling of Plastics Products |
| JP5960334B1 (en) * | 2015-09-18 | 2016-08-02 | 株式会社パンテック | Strip film stripping device |
-
1987
- 1987-02-17 JP JP62033732A patent/JPS63202409A/en active Pending
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0369341A2 (en) * | 1988-11-14 | 1990-05-23 | Idemitsu Petrochemical Co. Ltd. | Method for recovering scraps of multi-layer plastic sheet or film |
| EP0369341A3 (en) * | 1988-11-14 | 1991-01-16 | Idemitsu Petrochemical Co. Ltd. | Method for recovering scraps of multi-layer plastic sheet or film |
| US5194109A (en) * | 1988-11-14 | 1993-03-16 | Idemitsu Petrochemical Co., Ltd. | Method for recovering scraps of multi-layer plastic sheet or film |
| JPH03102809A (en) * | 1989-09-14 | 1991-04-30 | Toshiba Corp | Disassembling method for molded device |
| US5304276A (en) * | 1990-06-26 | 1994-04-19 | G. P. Research Ltd. | Method and apparatus for reclaiming gypsum from waste wallboard |
| US5273701A (en) * | 1991-03-01 | 1993-12-28 | L'air Liquid, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Process to remove a layer of thermoplastic material deposited on a substrate |
| US5230944A (en) * | 1991-06-22 | 1993-07-27 | Hoechst Aktiengesellschaft | Laminated material having latent inherent delamination potential |
| US6051168A (en) * | 1993-11-08 | 2000-04-18 | Mitsubishi Chemical Corporation | Method and apparatus for peeling coating from coated plastics and method for recylcling plastics |
| US5788811A (en) * | 1993-11-08 | 1998-08-04 | Mitsubishi Chemical Corporation | Method and apparatus for peeling coating from coated plastics and method for recycling plastics |
| US5891296A (en) * | 1995-08-25 | 1999-04-06 | Fuji Jukogyo Kabushiki Kaisha | Apparatus and method for peeling and removing a coated film on resin product |
| US6076584A (en) * | 1996-10-04 | 2000-06-20 | Fuji Jukogyo Kabushiki Kaisha | Apparatus for removing coating from coated product |
| US5932066A (en) * | 1996-11-01 | 1999-08-03 | Mitsubishi Heavy Industries, Ltd. | Film removing device for resin molded material |
| US6338771B1 (en) * | 1997-05-23 | 2002-01-15 | Becker Preservotec Gmbh | Method and device for removing lamination |
| JP2001170933A (en) * | 1999-12-16 | 2001-06-26 | Japan Wavelock Co Ltd | Method for separating/recycling thermally fusible multi- layered sheet and separating/recycling device |
| JP2002096327A (en) * | 2000-09-26 | 2002-04-02 | Teijin Ltd | Laminated film separation device and manufacturing method for laminated film |
| JP2008096676A (en) * | 2006-10-11 | 2008-04-24 | Fujifilm Corp | Collecting method of polymer from polarizing plate, manufacturing method of regenerated polymer film and polarizing plate |
| JP2010121134A (en) * | 2008-11-21 | 2010-06-03 | Nitto Denko Corp | Method of detaching attached boards from each other |
| EP2650324A1 (en) * | 2012-04-12 | 2013-10-16 | Linpac Packaging Limited | Method for the Recycling of Plastics Products |
| GB2502945A (en) * | 2012-04-12 | 2013-12-18 | Linpac Packaging Ltd | Separation of multilayer plastics for recycling |
| AU2013203841B2 (en) * | 2012-04-12 | 2015-02-05 | Linpac Packaging Limited | Method for the recycling of plastics products |
| JP5960334B1 (en) * | 2015-09-18 | 2016-08-02 | 株式会社パンテック | Strip film stripping device |
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