CN103889715A - Polyolefin film - Google Patents
Polyolefin film Download PDFInfo
- Publication number
- CN103889715A CN103889715A CN201280052780.3A CN201280052780A CN103889715A CN 103889715 A CN103889715 A CN 103889715A CN 201280052780 A CN201280052780 A CN 201280052780A CN 103889715 A CN103889715 A CN 103889715A
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- China
- Prior art keywords
- release layer
- film
- weight
- layer
- alpha
- Prior art date
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- 229920000098 polyolefin Polymers 0.000 title claims abstract description 33
- 239000010410 layer Substances 0.000 claims abstract description 130
- 239000012790 adhesive layer Substances 0.000 claims abstract description 59
- 229920005989 resin Polymers 0.000 claims abstract description 42
- 239000011347 resin Substances 0.000 claims abstract description 42
- 239000004711 α-olefin Substances 0.000 claims abstract description 29
- 229920001400 block copolymer Polymers 0.000 claims abstract description 23
- 230000003746 surface roughness Effects 0.000 claims abstract description 18
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims abstract description 11
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims abstract description 11
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 claims abstract description 11
- 229920000089 Cyclic olefin copolymer Polymers 0.000 claims abstract description 10
- 210000000713 mesentery Anatomy 0.000 claims description 30
- 239000000758 substrate Substances 0.000 claims description 28
- 229920001971 elastomer Polymers 0.000 claims description 26
- 229920000642 polymer Polymers 0.000 claims description 21
- 239000000806 elastomer Substances 0.000 claims description 18
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 17
- 229910052799 carbon Inorganic materials 0.000 claims description 17
- WSSSPWUEQFSQQG-UHFFFAOYSA-N 4-methyl-1-pentene Chemical compound CC(C)CC=C WSSSPWUEQFSQQG-UHFFFAOYSA-N 0.000 claims description 16
- 229920005673 polypropylene based resin Polymers 0.000 claims description 14
- 229920001577 copolymer Polymers 0.000 claims description 13
- 125000003011 styrenyl group Chemical class [H]\C(*)=C(/[H])C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 claims 2
- 238000001125 extrusion Methods 0.000 abstract description 16
- 239000000853 adhesive Substances 0.000 abstract description 12
- 239000005977 Ethylene Substances 0.000 abstract 1
- -1 polypropylene Polymers 0.000 description 32
- 239000000126 substance Substances 0.000 description 22
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 21
- 238000000034 method Methods 0.000 description 17
- 150000003440 styrenes Chemical class 0.000 description 16
- 239000011248 coating agent Substances 0.000 description 15
- 238000000576 coating method Methods 0.000 description 15
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- 238000004519 manufacturing process Methods 0.000 description 14
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- 230000001070 adhesive effect Effects 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 10
- 229920005672 polyolefin resin Polymers 0.000 description 10
- 238000012360 testing method Methods 0.000 description 10
- 229920000306 polymethylpentene Polymers 0.000 description 9
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- 239000005060 rubber Substances 0.000 description 8
- 239000004902 Softening Agent Substances 0.000 description 7
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- 239000004035 construction material Substances 0.000 description 7
- 238000010023 transfer printing Methods 0.000 description 7
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- 230000008859 change Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- BXOUVIIITJXIKB-UHFFFAOYSA-N ethene;styrene Chemical group C=C.C=CC1=CC=CC=C1 BXOUVIIITJXIKB-UHFFFAOYSA-N 0.000 description 4
- 229920001903 high density polyethylene Polymers 0.000 description 4
- 239000004700 high-density polyethylene Substances 0.000 description 4
- 229920001684 low density polyethylene Polymers 0.000 description 4
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- 238000013508 migration Methods 0.000 description 4
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- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 3
- 239000004793 Polystyrene Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 239000011120 plywood Substances 0.000 description 3
- 229920000728 polyester Polymers 0.000 description 3
- 229920006124 polyolefin elastomer Polymers 0.000 description 3
- 229920002223 polystyrene Polymers 0.000 description 3
- 229920005604 random copolymer Polymers 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 229920003048 styrene butadiene rubber Polymers 0.000 description 3
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 description 3
- KPAPHODVWOVUJL-UHFFFAOYSA-N 1-benzofuran;1h-indene Chemical compound C1=CC=C2CC=CC2=C1.C1=CC=C2OC=CC2=C1 KPAPHODVWOVUJL-UHFFFAOYSA-N 0.000 description 2
- LIKMAJRDDDTEIG-UHFFFAOYSA-N 1-hexene Chemical compound CCCCC=C LIKMAJRDDDTEIG-UHFFFAOYSA-N 0.000 description 2
- 229920006353 Acrylite® Polymers 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 239000013032 Hydrocarbon resin Substances 0.000 description 2
- 239000004594 Masterbatch (MB) Substances 0.000 description 2
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- 229920005606 polypropylene copolymer Polymers 0.000 description 2
- 229920001384 propylene homopolymer Polymers 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
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- 238000010998 test method Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- ROGIWVXWXZRRMZ-UHFFFAOYSA-N 2-methylbuta-1,3-diene;styrene Chemical compound CC(=C)C=C.C=CC1=CC=CC=C1 ROGIWVXWXZRRMZ-UHFFFAOYSA-N 0.000 description 1
- VSKJLJHPAFKHBX-UHFFFAOYSA-N 2-methylbuta-1,3-diene;styrene Chemical compound CC(=C)C=C.C=CC1=CC=CC=C1.C=CC1=CC=CC=C1 VSKJLJHPAFKHBX-UHFFFAOYSA-N 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical class C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 1
- 229920000181 Ethylene propylene rubber Polymers 0.000 description 1
- 206010070245 Foreign body Diseases 0.000 description 1
- 229920002367 Polyisobutene Polymers 0.000 description 1
- 238000005411 Van der Waals force Methods 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 229920006271 aliphatic hydrocarbon resin Polymers 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
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- 229920006272 aromatic hydrocarbon resin Polymers 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002981 blocking agent Substances 0.000 description 1
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
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- 150000004678 hydrides Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- YWAKXRMUMFPDSH-UHFFFAOYSA-N pentene Chemical group CCCC=C YWAKXRMUMFPDSH-UHFFFAOYSA-N 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920002587 poly(1,3-butadiene) polymer Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920001083 polybutene Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 229920001195 polyisoprene Polymers 0.000 description 1
- 239000005518 polymer electrolyte Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920005629 polypropylene homopolymer Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
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- 239000011115 styrene butadiene Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 150000003505 terpenes Chemical class 0.000 description 1
- 235000007586 terpenes Nutrition 0.000 description 1
- 229940117958 vinyl acetate Drugs 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Images
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
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- 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
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/06—Interconnection of layers permitting easy separation
-
- 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
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
- B29C48/08—Flat, e.g. panels flexible, e.g. films
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
- B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
- B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
-
- 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
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/538—Roughness
-
- 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
- B32B2307/748—Releasability
Landscapes
- Laminated Bodies (AREA)
- Adhesive Tapes (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The present invention addresses the problem of obtaining a self-adhesive surface-protecting film that is highly processing-friendly, and despite adhering to the protected object strongly and being usable on a variety of objects, is not prone to problems such as localized stretching or deformation when unrolled from being stored rolled up. The present invention relates to a polyolefin film characterized by comprising an adhesive layer laminated to one surface of a polypropylene-resin base layer and a release layer laminated to the opposite surface via co-extrusion. This polyolefin film is further characterized in that: the resins constituting the release layer include, at least, a propylene/ethylene block copolymer and a C4+ alpha-olefin (co)polymer; said C4+ alpha-olefin (co)polymer constitutes at least 5% but less than 35% of the total weight of the resin components constituting the release layer; and the surface roughness (SRa) of the release layer is 0.20 to 0.50 [mu]m.
Description
Technical field
The present invention relates to a kind of polyolefin mesentery.The parts such as the prismatic lens that polyolefin mesentery of the present invention can be used for using at optical applications, synthetic resin board (such as construction material is used), corrosion resistant plate (such as construction material is used), aluminium sheet, fancy plywood, steel plate, glass plate, family's electrical article, precision optical machinery etc.In addition, said polyolefins mesentery can be suitable for the surface of the body of a motor car while manufacture for protection, escapes injury while being used for protecting article to carry piling up, in keeping, transport or manufacturing process and be used for protecting article for example, to escape injury in secondary operations (bending machining or press process) time.
Background technology
Just in the time of the processing of construction material, electric product, electronic product, automobile etc., keeping, transport, use the bonding film as object taking the surface of protective covering body all the time; such bonding film must have good cohesive, and after use, can easily peel off and can not make the each surface of adhesive contamination.
In recent years, for above-mentioned coating body, along with the variation of its kind, can not only see the coating body level and smooth by clad can, and can also see many coating bodies with concave-convex surface.As the coating body with concave-convex surface, can list the prism-type lens section of the prismatic lens for example using etc. in optics.In order to embody sufficient bonding force in the time that the such coating body with concave-convex surface of prismatic lens is used, and consideration improves the bonding force of adhesive layer etc., even if so that the little bonding force that also can obtain of contact area.
In order to improve the bonding force of adhesive layer, although can be used as styrene series elastomer, the olefin-based elastomer etc. of resin demonstration high adhesion as principal component, if but improve the bonding force of adhesive layer, when with roller volume state keeping film and after appearance generation adhesion while extracting film out, extend to membrane portions or the problem such as distortion.
As the countermeasure of the problems referred to above, for example attempting, by being that more than 4 alpha olefin copolymer improves adhesion while extracting film out (with reference to patent documentation 1 etc.) with carbon number in release layer.But, at the general temperature of extruding polypropylene-based resin, use T mould etc. by coextrusion masking, the stacked carbon number containing more than 50 % by weight is the release layer of more than 4 alpha olefin copolymers at the one side of the substrate layer being formed by polypropylene-based resin if want, and has the unfavorable condition of the masking variation of release layer.
Prior art document
Patent documentation
Patent documentation 1: 2011-No. 42757 communiques of TOHKEMY
Summary of the invention
Invent problem to be solved
Problem to be solved by this invention is to provide a kind of self adhesion surface protection film of film flexibility (adaptability) of operation excellence; it shows strong bonding force and can be used in various coating bodies coating body, even and when with roller volume state keeping bonding film and after be also difficult to cause membrane portions while extracting film out and extend or the problem such as distortion.That is, the object of the present invention is to provide a kind of polyolefin mesentery, it has good fissility and masking and can not produce shaggy transfer printing and can not suppress cohesive.
For solving the means of problem
The inventor etc. conduct in-depth research, and found that and can solve above-mentioned problem by the scope that the match ratio of the resin using in release layer, surface roughness is made as to regulation, thereby complete the present invention., the present invention relates to a kind of polyolefin mesentery, it is characterized in that, it is the stacked adhesive layer of one side at the substrate layer being formed by polypropylene-based resin by coextrusion, and form at the stacked release layer of opposing face, the resin that forms release layer at least comprises the block copolymer of propylene and ethene, with carbon number be more than 4 alpha-olefin (being total to) polymer, carbon number is that the use level of more than 4 alpha-olefin (being total to) polymer is more than 5 % by weight and lower than 35 % by weight in the resinous principle that forms release layer, the surface roughness (SRa) of release layer is more than 0.20 μ m and below 0.50 μ m.
In this case, preferably making above-mentioned carbon number is that more than 4 alpha olefin copolymer is 4-methyl-1-pentene system (being total to) polymer.
In addition, in this case, preferably making the MFR (230 DEG C, 2.16Kgf) of above-mentioned polypropylene-based resin is 1.0～15g/10 minute.
And then in this case, preferably making at least to use in above-mentioned adhesive layer the MFR (230 DEG C, 2.16Kgf) of styrene series elastomer and this styrene series elastomer is 0.5～20g/10 minute.
Invention effect
Polyolefin mesentery of the present invention has the following advantages: coating body is shown strong bonding force and can be used in various coating bodies, even and when with roller volume state keeping bonding film and after be also difficult to cause membrane portions while extracting film out and extend or the problem such as distortion, make the flexibility (adaptability) of operation excellence of film.That is, according to the present invention, can provide a kind of polyolefin mesentery, it has good fissility and masking and can not produce shaggy transfer printing and can not suppress cohesive.
Brief description of the drawings
Fig. 1 is the schematic diagram of measuring sample.
Detailed description of the invention
The embodiment of polyolefin mesentery of the present invention (bonding film) is described below.
(substrate layer)
Polyolefin mesentery of the present invention need to be taking polypropylene-based resin as principal component substrate layer, as polypropylene-based resin as used herein, can list crystalline polypropylene, the random copolymer of propylene and a small amount of alpha-olefin, block copolymer etc., more specifically, as crystalline polypropylene resin, can list the insoluble isotactic propylene homopolymer of normal heptane using in common extrusion molding etc., or the propylene that contains the above propylene of 60 % by weight and the copolymer of other alpha-olefin, this Noblen or propylene can use separately or mix use with the copolymer of other alpha-olefin.Preferably make to comprise propylene units more than 50 % by weight in substrate layer, further preferably comprise propylene units more than 60 % by weight.There is no toughness if propylene lower than 50 % by weight, makes film become sometimes, make to process becoming difficult.
Here, so-called normal heptane is insoluble to be referred to taking polyacrylic crystallinity as index and the character of display security simultaneously, in the present invention, preferred scheme is to use the isotactic propylene homopolymer that meets normal heptane clear and No. 20 regulation of in February, 57 Health and human services department bulletin insoluble (stripping quantity in the time extracting 60 minutes for 25 DEG C is (being below 30ppm when serviceability temperature exceedes 100 DEG C) below 150ppm).
As the alpha-olefin copolymer composition of the copolymer of propylene and other alpha-olefin, the alpha-olefin that preferably carbon number is 2～8, for example, be the alpha-olefin more than C4 such as ethene or 1-butylene, 1-amylene, 1-hexene, 4-methyl-1-pentene.Here, so-called copolymer is preferably the random or block copolymer that makes one kind or two or more above-mentioned illustrated alpha-olefin and propylene polymerization and obtain.The melt flow rate (MFR) (MFR:230 DEG C, 2.16Kgf) of the polypropylene-based resin using is preferably the scope of 1.0～15g/10 minute, the more preferably scope of 2.0～10.0g/10 minute.In addition also the copolymer of propylene and other alpha-olefin can be mixed with two or more.And then, also can add the scrap film producing man-hour and carry out granulation again as reclaiming raw material the film obtaining in the present invention being carried out to product, and add in substrate layer.Reclaim raw material by use, can suppress production cost.
(adhesive layer)
For the adhesive layer of polyolefin mesentery of the present invention, as long as known adhesive all can use, but be preferably styrene series elastomer, olefin-based elastomer.Especially in order to embody high bonding force, and can suitable use styrene series elastomer.In addition,, in order to control bonding force, also can mix as required polyolefin-based resins, tackifying resin, softening agent.
Styrene series elastomer can be enumerated: the A-B-A type block polymers such as s-B-S, styrene-isoprene-phenylethene, styrene-ethylene/butylene copolymer-styrene, styrene-ethylene/propylene copolymer-styrene; The A-B type block polymers such as styrene-butadiene, styrene-isoprene, styrene-ethylene/butylene copolymer, styrene-ethylene/propylene copolymer; The polystyrene random copolymers such as SBR styrene butadiene rubbers; And their hydride.
The melt flow rate (MFR) (MFR:230 DEG C, 2.16Kgf) of the styrene series elastomer using is preferably the scope of 0.5～20g/10 minute, the more preferably scope of 2.0～15.0g/10 minute, the more preferably scope of 3～10g/10 minute, is particularly preferably the scope of 4～7g/10 minute.
More than styrene series elastomer is preferably 50 % by weight in adhesive layer (forming the resinous principle of adhesive layer), more preferably more than 60 % by weight, more preferably more than 70 % by weight, further more preferably more than 75 % by weight; Be preferably below 100 % by weight, more preferably below 99 % by weight, more preferably below 98 % by weight, further more preferably below 97 % by weight.
More than styrene composition in styrene series elastomer is preferably 5 % by weight and below 30 % by weight.If styrene composition is lower than 5 % by weight, the granulation while making resin becomes difficulty, if styrene composition exceedes 30 % by weight, bonding force reduces, and becomes and is difficult to obtain required bonding force.In addition, more than the styrene composition in styrene series elastomer is preferably 10 % by weight and below 25 % by weight, more preferably more than 10 % by weight and below 20 % by weight, more preferably more than 10 % by weight and below 15 % by weight.In addition, composition beyond styrene composition in styrene series elastomer is preferably made up of the composition such as ethene, butylene, one-tenth component beyond styrene composition is preferably 70～95 % by weight in styrene series elastomer, more preferably 75～90 % by weight, more preferably 80～90 % by weight, further 85～90 % by weight more preferably.
It is 2～10 alpha-olefine polymers or the copolymer of copolymer, ethene and unsaturated carboxylic acid or esters of unsaturated carboxylic acids etc. that olefin-based elastomer can list carbon number.The elastomeric melt flow rate (MFR) of olefin-based (MFR:230 DEG C, 2.16Kgf) using is preferably the scope of 0.5～20g/10 minute, the more preferably scope of 2.0～10.0g/10 minute.
Polyolefin-based resins is not particularly limited, and can list the copolymer, low density polyethylene (LDPE), high density polyethylene (HDPE), ethene of crystalline polypropylene, propylene and a small amount of alpha-olefin and copolymer, ethene and the unsaturated carboxylic acid of a small amount of alpha-olefin or copolymer, the polystyrene etc. of esters of unsaturated carboxylic acids.Wherein, because substrate layer is made up of polypropylene-based resin, so from the relation of melt viscosity etc., also can suitable use polypropylene-based resin.The melt flow rate (MFR) (MFR:230 DEG C, 2.16Kgf) of the polyolefin-based resins using is preferably the scope of 1.0～100.0g/10 minute, the more preferably scope of 2.0～30.0g/10 minute, the more preferably scope of 2～10g/10 minute, is particularly preferably the scope of 2～7g/10 minute.
The use level of the polyolefin-based resins in adhesive layer is preferably below 25 % by weight.If the use level of polyolefin-based resins exceedes 25 % by weight, can make bonding force reduce according to used resin and can not get sufficient bonding force.More than the use level of polyolefin-based resins is preferably 5 % by weight.If the use level of polyolefin-based resins lower than 5 % by weight, makes the bonding force of release layer cross the selection narrowed width that makes by force release layer sometimes.The use level of polyolefin-based resins is more preferably more than 6 % by weight and below 20 % by weight, more preferably more than 6 % by weight and below 15 weight.
Tackifying resin for example can list aliphatic hydrocarbon resin, aromatic hydrocarbon resin, alicyclic hydrocarbon resin, terpene resin, coumarone-indene resin (coumarone-indene resin), phenylethylene resin series, abietic resin etc., wherein preferred alicyclic hydrocarbon resin (for example Petropols).The molecular weight of tackifying resin is not particularly limited, can suitably set, if but molecular weight diminishes, may cause material migration from adhesive layer to clung body or re-separation etc. from, on the other hand, if molecule quantitative change is large, there is the tendency that makes the raising effect of bonding force become shortcoming, so the number-average molecular weight of tackifying resin is preferably 1000～100,000 left and right.
Scope more than the use level of the tackifying resin in adhesive layer is preferably 5 % by weight and below 30 % by weight.If the use level of tackifying resin exceedes 30 % by weight, sometimes because the low melt viscosity that makes of molecular weight of tackifying resin becomes extremely low, in the time using the coextrusion masking of T mould etc., can make the stacked difficulty that becomes with the substrate layer using polypropylene-based resin as principal component.In addition if lower than 5 % by weight, may being helpless to the bonding force of adhesive layer, the use level of the tackifying resin in adhesive layer changes.The use level of tackifying resin is more preferably more than 6 % by weight and below 25 % by weight, more preferably more than 6 % by weight and below 20 % by weight, further more preferably more than 6 % by weight and below 15 % by weight, more than being particularly preferably 6 % by weight and below 10 % by weight.
As softening agent, for example, can list low-molecular-weight diene polymer, polyisobutene, hydrogenated polyisoprene, hydrogenated butadiene polymer or their derivative, polybutene etc.The molecular weight of softening agent is not particularly limited, can suitably set, if but molecular weight diminishes, may cause material migration from adhesive layer to clung body or re-separation etc. from, on the other hand, if molecule quantitative change is large, there is the tendency that makes the raising effect of bonding force become shortcoming, so the number-average molecular weight of softening agent is preferably 1000～100,000 left and right.
In addition, the tackifying resin that uses in adhesive layer, softening agent root is dug its kind liquid or powder, pollutes in addition the material of extruder in the time extruding.Such problem can make for improving, so use after preferably tackifying resin, softening agent and polyolefin-based resins being made to masterbatch after tackifying resin, softening agent and polyolefin-based resins being made to masterbatch.
In the time considering for various coating body, polyolefin mesentery of the present invention is preferably the scope of 200～900cN/25mm at 23 DEG C to the bonding force of acrylic board.If bonding force, lower than 200cN/25mm, can produce and crispatura etc. according to the difference of coating body in the time that it is protected, cannot undertake the function as diaphragm.On the other hand, if bonding force exceedes 900cN/25mm, may when from prismatic lens stripping film, cannot successfully peel off.Bonding force can suitably be set by changing resin composition, the thickness etc. of adhesive layer.Bonding force is more preferably more than 300cN/25mm and below 900cN/25mm, more preferably more than 400cN/25mm and below 800cN/25mm.
Polyolefin mesentery of the present invention can contain known additive as required.For example also can contain lubricant, anti-blocking agent, heat stabilizer, antioxidant, antistatic agent, photostabilizer, shock-resistant modifying agent etc.But, preferably make the low molecular weight substance on adhesive layer surface lower than 1mg/m
2.
Here, the mensuration of the low molecular weight substance on adhesive layer surface is implemented according to the following steps.Adhesive layer surface is not corroded with ethanol etc. after the organic solvent washing of the resin that forms adhesive layer, removed organic solvent with evaporimeter etc. from this cleaning solution, the numerical value of then this residue of weighing being obtained is tried to achieve divided by the surface area on washed adhesive layer surface.Here, if there is 1mg/m
2above residue, makes to have foreign matter between adhesive layer surface and clung body surface, causes that contact area reduces, Van der Waals force reduces, and institute is so that bonding force reduction, therefore not preferred.Adding in additivated situation, need to be by selecting additive or research addition and the adding method etc. of polymer electrolyte etc. that it can or be transferred on adhesive layer to adhesive layer migration.
(release layer)
Polyolefin mesentery of the present invention forms release layer on the face contrary with the adhesive layer of one side that is laminated in substrate layer, even if thus film is overlapped each other, film adhesion is each other also few, particularly when with roller volume state keeping film and after be also difficult to cause membrane portions while extracting film out and extend or the problem such as distortion, make the flexibility (adaptability) of operation excellence of film.Even also can there is not film adhesion each other for film is overlapped each other, effectively make to form concave-convex surface on release layer and reduce and the contact area of adhesive layer.
In order to form concave-convex surface as described above, can suitable use propylene-ethylene block copolymer.By increasing the molecular weight of the ethylene-propylene rubber in propylene-ethylene block copolymer or increasing the amount of ethene, thereby can increase rough surface.In addition, by mix resin inconsistent with it in propylene-ethylene block copolymer, thereby can further increase rough surface.And then, extruding in operation, by reducing the shear rate that resin is applied or extending the holdup time, thereby also can further increase rough surface.On the other hand, can also reduce rough surface by the poly-acrylic resin that is mixed in propylene-ethylene block copolymer.
As with the inconsistent resin of propylene-ethylene block copolymer, can be suitable the carbon number such as use 4-methyl-1-pentene system (being total to) polymer be more than 4 alpha-olefin (being total to) polymer.In addition also can list, the copolymer, polystyrene, polyester based resin, polyamide-based resin etc. of copolymer, ethene and the vinylacetate of low density polyethylene (LDPE), high density polyethylene (HDPE), ethene and a small amount of alpha-olefin.Particularly 4-methyl-1-pentene system (being total to) polymer not only makes surperficial roughening with matt shape, but also estimates fissility further to be improved by the surface free energy that reduces film surface.
In addition, also can realize the concavo-convex of surface by add above-mentioned non-conforming resin in homo-polypropylene, random polypropylene, but in the situation that using propylene-ethylene block copolymer, melting mixing condition when producing change, the masking of board is difficult to change concavo-convex state, can realize stable production.
Carbon number in release layer (forming the resinous principle of release layer) is that the use level of more than 4 alpha-olefin (being total to) polymer is the scope more than 5 % by weight and below 35 % by weight.When the use level that is more than 4 alpha-olefin (being total to) polymer at carbon number exceedes 35 % by weight, use at the general temperature of extruding polypropylene-based resin if want T mould etc. the one side of the substrate layer being formed by polypropylene-based resin by coextrusion masking stacked release layer, can make the masking variation of release layer.Be the use level of more than 4 alpha-olefin (being total to) polymer during lower than 5 % by weight at carbon number, be helpless to improve the peeling force of release layer.Carbon number is more than the use level of more than 4 alpha-olefin (being total to) polymer is preferably 7 % by weight and below 33 % by weight.In addition, it is the molecular weight of more than 4 alpha-olefin (being total to) polymer about carbon number, if molecular weight diminishes, may cause material migration from release layer to adhesive layer etc., so the number-average molecular weight of tackifying resin is preferably 10,000～1,000,000 left and right.
The weight ratio (propylene-ethylene block copolymer/4-methyl-1-pentene is (being total to) polymer) of the propylene-ethylene block copolymer in release layer and 4-methyl-1-pentene system (be total to) polymer is preferably 95/5～65/35, and more preferably 93/7～67/33.
If in view of the resin composition of the adhesive layer in the present invention, the average surface roughness SRa that preferably makes release layer surface is that 0.20 μ m is above and below 0.50 μ m.Can improve thus the protective value of resistance to adhesive and clung body.The extractable variation of film when if the surface roughness of release layer lower than 0.20 μ m, makes film make roller scroll state.If the surface roughness of release layer is higher than 0.50 μ m, the concave-convex surface of release layer can be transferred to the surface of adhesive layer and bonding force is significantly reduced sometimes.
Now, the concave-convex surface of release layer is more preferably formed as surperficial average surface roughness SRa and reaches the above and surface below 0.45 μ m of 0.25 μ m.
The mist degree of the film that the release layer with this kind of surface roughness is laminated is preferably more than 20% and below 80%.In order easily to confirm the attaching of diaphragm to coating body, and the mist degree that makes film is more preferably more than 30%, in addition, for foreign matter is easily found when the masking by foreign-body locator, and makes mist degree more preferably below 70%.
The adhesive surface of polyolefin mesentery of the present invention is the scope below 200cN/25mm to the peeling force of stripping surface at 23 DEG C, and the viewpoint of the extractable of this film when bonding film being made to roller scroll state is preferred.If peeling force exceedes 200cN/25mm, in the extraction of the film in the time bonding film being made to roller scroll state, can produce membrane portions and extend or the problem such as distortion.Peeling force can suitably be set by changing addition that carbon number in release layer is more than 4 alpha olefin copolymer, surface roughness.
In addition, the lower limit of the peeling force of the adhesive surface of polyolefin mesentery to stripping surface is counted 1cN/25mm left and right with actual value, is further 5cN/25mm left and right.
More than the thickness of the adhesive layer of the polyolefin mesentery in the present invention is preferably 1 μ m and lower than 30 μ m.If the thickness of adhesive layer, lower than 1 μ m, is difficult to utilize coextrusion to stablize masking, if the thickness of adhesive layer is more than 30 μ m, can become disadvantageous film aspect cost.
Now, in the situation that increasing bonding force, consider its viscosity, and preferably increase thickness.By increasing the thickness of adhesive layer, thus the contact area of easy increase and clung body.More than the thickness of adhesive layer is preferably 2 μ m and below 20 μ m, more preferably more than 3 μ m and below 15 μ m, more than being particularly preferably 4 μ m and below 8 μ m.
More than the thickness of the substrate layer of polyolefin mesentery of the present invention is preferably 5 μ m and lower than 100 μ m, more preferably more than 10 μ m and lower than 75 μ m, more preferably more than 15 μ m and lower than 40 μ m.If the thickness of substrate layer is lower than 5 μ m; exist toughness to die down, in the time being attached at coating body as diaphragm, easily produce gauffer etc., cannot obtain fully the problem of bonding force; if the thickness of substrate layer is more than 100 μ m, can become disadvantageous film aspect cost.
More than the thickness of the release layer of polyolefin mesentery of the present invention is preferably 1 μ m and lower than 30 μ m.If the thickness of release layer, lower than 1 μ m, is difficult to utilize coextrusion to stablize masking, if the thickness of release layer is more than 30 μ m, can become disadvantageous film aspect cost.
Now, more than the thickness of release layer is preferably 2 μ m and below 20 μ m, more preferably more than 3 μ m and below 15 μ m, more than being particularly preferably 4 μ m and below 8 μ m.
Polyolefin mesentery of the present invention is made up of the substrate layer that comprises above-mentioned resinous principle, adhesive layer, release layer each layer, and each layer as long as performance effect of the present invention can be more than 1 layer or 2 layers.Can use the extruder etc. of such as single screw rod, twin-screw that the resin that forms each layer is delivered directly to molten condition in the T mould of material feeding block type, and carry out stacked extruding, thereby make the polyolefin mesentery of at least 3 layers.In order to make each layer in molten condition, the temperature of the extruder of each layer can be considered the forming temperature of the suitable each layer of composition using and suitably regulate, for example, can in the scope of 200 DEG C～260 DEG C, regulate.The temperature of T mould also can be identical with said temperature.Drawing the speed of the speed of getting as long as making each layer to reach suitable thickness from T mould to casting roll, for example, is 10m/min～50m/min, is preferably 10m/min～30m/min.
Consideration from processing, the suitable form of making roller volume of polyolefin mesentery of the present invention.The upper limit of the width of film volume and volume length is not particularly limited, and from the easiness of processing, preferably: bandpass is below 1.5m, volume is long is below 6000m in the situation that film thickness is 30 μ m.In addition,, as batching core, conventionally can use plastic core or the metal coremaking of 3 inches, 6 inches, 8 inches etc.In addition,, from the adaptability of processing, be preferably the film volume that above according to length 200m, more than width 450mm size coils into.
Polyolefin mesentery of the present invention can be used in the parts such as the prismatic lens that uses in optical applications, synthetic resin board (such as construction material with), corrosion resistant plate (such as construction material with), aluminium sheet, fancy plywood, steel plate, glass plate, household appliances, precision optical machinery etc.In addition, polyolefin mesentery of the present invention can be on the surface that is used for the body of a motor car of protection while manufacturing, the situation use that is used for protecting that article are being piled up, escapes injury and protect article for example, to escape injury when secondary operations (bending machining or press process) while carrying in keeping, transport or manufacturing process.
The interests of the priority that No. 2011-238935, the Japanese patent application of the application's requirement based on application on October 31st, 2011.The full content of the description of No. 2011-238935, the Japanese patent application of on October 31st, 2011 application is referred in the application as a reference.
Embodiment
List embodiment below, and further illustrate the present invention.But the present invention only otherwise departing from its purport is just not limited to following embodiment.In addition, the evaluation method of the physical property in following embodiment, comparative example is as described below.
(1) fusible evaluation
According to JIS-Z-0237 (2000) adhesive tape bonding sheet test method, measure with following method.
As clung body, prepare acrylic board (the Mitsubishi Rayon Co. of 50mm × 150mm, Ltd. system: ACRYLITE (registration mark) 3mm is thick), as test film, cut out take-up direction in the time that film is manufactured and be 150mm and with the orthogonal direction of this take-up direction test film that is 25mm, service property (quality) be 2000g rubber rollers (roller surface by elastic hardness (spring hardness) for 80Hs, thickness is that rubber layer coating and the width of 6mm is 45mm, the rubber rollers that diameter (comprising rubber layer) is 95mm), and with the speed of 5mm/ second reciprocal 1 time and clung body and test film are carried out to crimping.After crimping, under the environment of 23 DEG C of temperature, relative humidity 65%, place after 30 minutes, use " AUTOGRAPH (registration mark) " of (strain) island Feng making manufacturing (AGS-J), with the speed of 300mm/ minute, it is carried out to 180 degree and peel off, and using Resistance Value now as bonding force [cN/25mm].So-called 180 degree are peeled off and while referring to the Resistance Value in the time that mensuration is peeled off, are made the peel angle of acrylic board and film remain on 180 degree.
In the time measuring, as the grasping part of measuring sample, to prepare thickness be 190 μ m, be of a size of the polyester sheet of 25mm × 170mm, use adhesive paste part to be attached on the end of bonding film side of the mensuration sample that bonding film and acrylic board crimping form for the wide cellophane band (registration mark) of 15mm, the grasping part during as mensuration.By illustrating in Fig. 1 of mensuration sample.Measure for a sample and implement 3 times, the bonding force using its mean value as this sample.
(2) evaluation of resistance to adhesive
At acrylic board (the Mitsubishi Rayon Co. of 50mm × 150mm, Ltd. system: ACRYLITE (registration mark) 3mm is thick) a whole upper double-sided adhesive tape splicing (day eastern electrician (strain) system: No.535A), the mode coming alongside according to the adhesive surface of test film on the another side of double-sided adhesive tape splicing attaches the test film of 150mm (take-up direction when film is manufactured) × 50mm (the orthogonal direction of take-up direction while manufacture with film) that attaches.
As new test film, the take-up direction of cutting mountain in the time that film is manufactured be 150mm and with the orthogonal direction of this take-up direction test film that is 25mm, after superimposed the stripping surface of the test film attaching by double-sided adhesive tape splicing on its adhesive surface and acrylic board, service property (quality) is the rubber rollers (roller surface is that the rubber layer coating that is 6mm of 80Hs, thickness and width are the rubber rollers that 45mm, diameter (comprising rubber layer) they are 95mm by elastic hardness) of 2000g, and with the speed of 5mm/ second reciprocal 1 time and stripping surface and test film are carried out to crimping.After crimping, under the environment of 23 DEG C of temperature, relative humidity 65%, place after 30 minutes, use " AUTOGRAPH (registration mark) " of (strain) island Feng making manufacturing (AGS-J), with the speed of 300mm/ minute, it is carried out to 180 degree and peel off, and using Resistance Value now as peeling force [cN/25mm].
In the time measuring, as the grasping part of measuring sample, to prepare thickness be 190 μ m, be of a size of the polyester sheet of 25mm × 170mm, uses adhesive paste part to be attached on the end of test film of 150mm × 25mm for the wide cellophane band of 15mm, the grasping part when measuring.Measure a sample is implemented 3 times, the peeling force using its mean value as this sample.
(3) mensuration of average surface roughness
The contact-type 3 D median plane surface roughness meter (model ET-30HK) that uses (strain) little Ban research institute to manufacture utilizes tracer method to measure the surperficial median plane mean roughness (SRa) of release layer under following condition.Condition is as described below, using the mean value of 3 mensuration as average surface roughness value.
Stylus tip radius: 0.5 μ m
Contact pilotage is pressed: 20mgf
Removal amount: 80 μ m
Measure long: 1000 μ m
Finding speed: 100 μ m/ seconds
Bei Ding interval: 2 μ m
(4) mensuration of mist degree
According to the optical characteristics test method of JIS-K-7105 plastics, the haze meter (NDH-1000) that uses Japanese electric look industry to manufacture is measured.
(5) rough surface of release layer is to the transfer printing of adhesive layer
The digital microscope (VHX-200F) that uses KEYENCE to manufacture, the digital picture of taking film adhesive surface with the multiplying powers of 100 times.Situation about substantially not occurring from the transfer printing of release layer is made as to "○", the situation serious transfer printing from release layer is made as to "×".
(6) masking
The situation that can be filmed with uniform thickness when the masking is made as to "○", and the situation that can not be filmed with uniform thickness is made as "×".
[embodiment 1]
(making of substrate layer)
By HOPP resin (Sumitomo Chemical system: FLX80E4, MFR:7.5g/10min) 100wt%, at 240 DEG C, melt extrude with 120mm φ single screw extrusion machine, make substrate layer.
(making of adhesive layer)
By styrene series elastomer (Asahi Kasei Chemicals system: TAFTEC (registration mark) H1221, styrene copolymerized than 12wt%, MFR:4.5g/10min) 85wt%, HOPP resin (Sumitomo Chemical system: FS2011DG3, MFR:2.5g/10min) 7.5wt% and Petropols (waste river chemical industry system: Arkon (registration mark) P125) 7.5wt%, at 220 DEG C, melt extrude with 90mm φ single screw extrusion machine, make adhesive layer.
(making of release layer)
By propylene-ethylene block copolymer (Japan Polypropylene Corporation system: BC4FC) 92wt% and polymethylpentene (Mitsui Chemicals system: RT31) 8wt%, at 250 DEG C, melt extrude with 90mm φ single screw extrusion machine, make release layer.
(making of film)
Utilize each extruder to make substrate layer, adhesive layer, the release layer state in melting respectively, under this state, in 3 layers of T mould (material feeding block type, die lip width are that 850mm, die lip gap are 1mm) of 245 DEG C, carry out stacked extruding.The film of extruding is drawn and gets temperature on the casting roll of 30 DEG C taking the speed of 20m/min, carry out cooling curing, obtaining substrate layer thickness is that 28 μ m, bondline thickness are that 6 μ m, release layer thickness are 3 kinds of 3 layers of unstretching films of 6 μ m.
[embodiment 2]
Adhesive layer, substrate layer keep identical with embodiment 1, and release layer is changed to following content, obtain 3 kinds of 3 layers of unstretching films by method for making similarly to Example 1.
(making of release layer)
By propylene-ethylene block copolymer (Japan Polypropylene Corporation system: BC3HF) 76wt% and polymethylpentene (Mitsui Chemicals system: RT31) 24wt%, squeeze mountain machine with the mono-screw rod of 90mm φ and at 250 DEG C, carry out the crowded mountain of melting, make release layer.
[embodiment 3]
It is identical with embodiment 1 that substrate layer keeps, and adhesive layer, release layer are changed to following content, obtains 3 kinds of 3 layers of unstretching films by method for making similarly to Example 1.
(making of adhesive layer)
After styrene series elastomer (Asahi Kasei Chemicals system: TAFTEC (registration mark) H1221, styrene copolymerized than 12wt%, MFR:4.5g/10min), Petropols (waste river chemical industry system: Arkon (registration mark) P125) and HOPP resin (Sumitomo Chemical system: FS2011DG3, MFR:2.5g/10min) are mixed with the ratio of 80/7.5/12.5wt%, at 220 DEG C, melt extrude with 90mm φ single screw extrusion machine, make adhesive layer.
(making of release layer)
By propylene-ethylene block copolymer (Japan Polypropylene Corporation system: BC3HF) 92wt% and polymethylpentene (Mitsui Chemicals system: RT31) 8wt%, at 250 DEG C, melt extrude with 90mm φ single screw extrusion machine, make release layer.
[embodiment 4]
It is identical with embodiment 1 that substrate layer keeps, and adhesive layer, release layer are changed to following content, obtains 3 kinds of 3 layers of unstretching films by method for making similarly to Example 1.
(making of adhesive layer)
After styrene series elastomer (Asahi Kasei Chemicals system: TAFTEC (registration mark) H1221, styrene copolymerized than 12wt%, MFR:4.5g/10min) and HOPP resin (Sumitomo Chemical system: FS2011DG3, MFR:2.5g/10min) are mixed with the ratio of 90/10wt%, at 240 DEG C, melt extrude with 90mm φ single screw extrusion machine, make adhesive layer.
(making of release layer)
By propylene-ethylene block copolymer (Japan Polypropylene Corporation system: BC3HF) 92wt% and polymethylpentene (Mitsui Chemicals system: RT31) 8wt%, at 250 DEG C, melt extrude with 90mm φ single screw extrusion machine, make release layer.
[reference example 1]
It is identical with embodiment 1 that substrate layer keeps, and adhesive layer, release layer are changed to following content, obtains 3 kinds of 3 layers of unstretching films by method for making similarly to Example 1.
(making of adhesive layer)
By styrene series elastomer (Asahi Kasei Chemicals system: TAFTEC (registration mark) H1221, styrene copolymerized than 12wt%, MFR:4.5g/10min) 100wt%, at 240 DEG C, melt extrude with 90mm φ single screw extrusion machine, make adhesive layer.
(making of release layer)
By propylene-ethylene block copolymer (Japan Polypropylene Corporation system: BC4FC) 68wt% and polymethylpentene (Mitsui Chemicals system: RT31) 32wt%, at 250 DEG C, melt extrude with 90mm φ single screw extrusion machine, make release layer.
[comparative example 1]
Substrate layer, adhesive layer keep identical with embodiment 1, and release layer is changed to following content, obtain 3 kinds of 3 layers of unstretching films by method for making similarly to Example 1.
(making of release layer)
By propylene-ethylene block copolymer (Japan Polypropylene Corporation system: BC4FC) 100wt%, at 250 DEG C, melt extrude with 90mm φ single screw extrusion machine, make release layer.
[comparative example 2]
Substrate layer, adhesive layer keep identical with embodiment 1, and release layer is changed to following content, obtain 3 kinds of 3 layers of unstretching films by method for making similarly to Example 1.
(making of release layer)
By propylene-ethylene block copolymer (Japan Polypropylene Corporation system: BC4FC) 96wt% and polymethylpentene (Mitsui Chemicals system: RT31) 4wt%, at 250 DEG C, melt extrude with 90mm single screw extrusion machine, make release layer.
[comparative example 3]
Substrate layer, adhesive layer keep identical with embodiment 1, and release layer is changed to following content, want to obtain 3 kinds of 3 layers of unstretching films by method for making similarly to Example 1, cannot obtain tolerating the film of evaluation but thickness and precision is poor.
(making of release layer)
By propylene-ethylene block copolymer (Japan Polypropylene Corporation system: BC3HF) 50wt% and polymethylpentene (Mitsui Chemicals system: RT31) 50wt%, at 250 DEG C, melt extrude with 90mm φ single screw extrusion machine, make release layer.
[comparative example 4]
Substrate layer, adhesive layer keep identical with embodiment 1, and release layer is changed to following content, obtain 3 kinds of 3 layers of unstretching films by method for making similarly to Example 1.
(making of release layer)
By propylene-ethylene block copolymer (Japan Polypropylene Corporation system: BC3HF) 75wt%, polymethylpentene (Mitsui Chemicals system: RT31) 6wt% and HOPP resin (Sumitomo Chemical system: FLX80E4, MFR:7.5g/10min) 19wt%, at 250 DEG C, melt extrude with 90mm φ single screw extrusion machine, make release layer.
[comparative example 5]
Substrate layer, adhesive layer keep identical with embodiment 1, and release layer is changed to following content, obtain 3 kinds of 3 layers of unstretching films by method for making similarly to Example 1.
(making of release layer)
By propylene-ethylene block copolymer (Japan Polypropylene Corporation system: BC4FC) 64wt%, polymethylpentene (Mitsui Chemicals system: RT31) 16wt% and ldpe resin, (space portion is emerging to be produced: R300) 20wt%, at 250 DEG C, melt extrude with single screw extrusion machine in 90mm, make release layer.
The above results is shown in table 1 and 2.
As indicated in table 1, the film obtaining in embodiment 1～4 has sufficient bonding force in practicality in the time using as diaphragm, also there is no shaggy transfer printing, and fissility when film is made to the rear extraction of roller volume is also good, and masking is also good.
On the other hand, for the film obtaining in comparative example 1,2 and 4, fissility when film is made to the rear extraction of roller volume may not deserve to be called good.In the film obtaining in comparative example 5, comparatively serious to the shaggy transfer printing from release layer of adhesive layer.In the method for making of comparative example 3, masking is poor and cannot obtain tolerating the film of evaluation.The film that makes thus to obtain in comparative example is poor quality, film that practicality is low.
Utilizability in industry
Polyolefin mesentery of the present invention can such as, such as, for the synthesis of in resin plate (construction material is used), corrosion resistant plate (construction material is used), aluminium sheet, fancy plywood, steel plate, glass plate, household appliances, precision optical machinery etc.In addition; polyolefin mesentery of the present invention also can be suitable for the surface of the body of a motor car while manufacture for protection, escape injury while being used for protecting article to carry piling up, in keeping, transport or manufacturing process and be used for protecting article for example, to escape injury in secondary operations (bending machining or press process) time, larger to the contribution of industrial circle.
Symbol description
1: upper jaw
2: polyester sheet
3: acrylic board
4: cellophane band
5: bonding film
6: lower jaw
7: draw direction
Claims (4)
1. a polyolefin mesentery, it is characterized in that, it is the stacked adhesive layer of one side at the substrate layer being formed by polypropylene-based resin by coextrusion, and form at the stacked release layer of opposing face, the resin that forms release layer at least comprises the block copolymer of propylene and ethene, with carbon number be more than 4 alpha-olefine polymers or alpha olefin copolymers, carbon number is that the use level of more than 4 alpha-olefine polymers or alpha olefin copolymer is more than 5 % by weight and lower than 35 % by weight in the resinous principle that forms release layer, the surface roughness SRa of release layer is more than 0.20 μ m and below 0.50 μ m.
2. polyolefin mesentery according to claim 1, wherein, described carbon number is that more than 4 alpha-olefine polymers or alpha olefin copolymers is 4-methyl-1-pentene based polymer or 4-methyl-1-pentene based copolymer.
3. polyolefin mesentery according to claim 1 and 2, wherein, the MFR of described polypropylene-based resin under 230 DEG C, the condition of 2.16Kgf is 1.0～15g/10 minute.
4. according to the polyolefin mesentery described in any one in claim 1～3, wherein, at least use styrene series elastomer in described adhesive layer, the MFR of this styrene series elastomer under 130 DEG C, the condition of 2.16Kgf is 0.5～20g/10 minute.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011-238934 | 2011-10-31 | ||
| JP2011238934 | 2011-10-31 | ||
| PCT/JP2012/077620 WO2013065579A1 (en) | 2011-10-31 | 2012-10-25 | Polyolefin film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103889715A true CN103889715A (en) | 2014-06-25 |
| CN103889715B CN103889715B (en) | 2015-09-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280052780.3A Expired - Fee Related CN103889715B (en) | 2011-10-31 | 2012-10-25 | Polyolefin mesentery |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP6056378B2 (en) |
| KR (1) | KR101983418B1 (en) |
| CN (1) | CN103889715B (en) |
| TW (1) | TWI565590B (en) |
| WO (1) | WO2013065579A1 (en) |
Cited By (3)
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| CN109554137A (en) * | 2018-12-04 | 2019-04-02 | 宁波激智科技股份有限公司 | A kind of high viscous protective film and preparation method thereof |
| CN110087881A (en) * | 2016-12-16 | 2019-08-02 | 东丽薄膜先端加工股份有限公司 | Mold release film and protective film |
| CN113122160A (en) * | 2021-04-29 | 2021-07-16 | 东莞市金恒晟新材料科技有限公司 | Preparation method of novel thermal tackifying protective film |
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| JP6515917B2 (en) * | 2014-06-18 | 2019-05-22 | 東洋紡株式会社 | Self-adhesive surface protection film |
| JP2017146492A (en) * | 2016-02-18 | 2017-08-24 | リンテック株式会社 | Film with protective film for laminating transparent conductive film, and method of manufacturing transparent conductive film |
| JP6851721B2 (en) * | 2016-02-18 | 2021-03-31 | リンテック株式会社 | A film for laminating a transparent conductive film with a protective film, and a method for manufacturing a transparent conductive film. |
| EP4039472A1 (en) | 2018-01-05 | 2022-08-10 | Baxter International Inc. | Multi-layer articles and methods for producing the same |
| JP7188672B2 (en) * | 2018-04-16 | 2022-12-13 | 東レフィルム加工株式会社 | laminated film |
| JP7238290B2 (en) * | 2018-08-03 | 2023-03-14 | 東洋紡株式会社 | laminated film. |
| JP7496309B2 (en) * | 2019-03-29 | 2024-06-06 | 東レフィルム加工株式会社 | Laminated Film |
| JP7306228B2 (en) | 2019-11-08 | 2023-07-11 | 三菱ケミカル株式会社 | Laminated film, Laminated film for flexible printed circuit board process |
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- 2012-10-25 CN CN201280052780.3A patent/CN103889715B/en not_active Expired - Fee Related
- 2012-10-25 WO PCT/JP2012/077620 patent/WO2013065579A1/en active Application Filing
- 2012-10-25 KR KR1020147011150A patent/KR101983418B1/en active IP Right Grant
- 2012-10-29 TW TW101139900A patent/TWI565590B/en not_active IP Right Cessation
- 2012-10-30 JP JP2012239505A patent/JP6056378B2/en active Active
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| CN1720310A (en) * | 2002-10-25 | 2006-01-11 | 三菱化学株式会社 | Release agent and release sheet |
| JP2008081709A (en) * | 2006-09-29 | 2008-04-10 | Mitsui Chemical Fabro Inc | Surface protecting film |
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| CN109554137A (en) * | 2018-12-04 | 2019-04-02 | 宁波激智科技股份有限公司 | A kind of high viscous protective film and preparation method thereof |
| CN109554137B (en) * | 2018-12-04 | 2021-08-17 | 宁波激智科技股份有限公司 | High-viscosity protective film and preparation method thereof |
| CN113122160A (en) * | 2021-04-29 | 2021-07-16 | 东莞市金恒晟新材料科技有限公司 | Preparation method of novel thermal tackifying protective film |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013065579A1 (en) | 2013-05-10 |
| CN103889715B (en) | 2015-09-02 |
| KR20140085464A (en) | 2014-07-07 |
| JP2013116626A (en) | 2013-06-13 |
| TW201325899A (en) | 2013-07-01 |
| TWI565590B (en) | 2017-01-11 |
| KR101983418B1 (en) | 2019-05-28 |
| JP6056378B2 (en) | 2017-01-11 |
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