WO2001070856A1 - Feuille de protection contre les rayonnements ultraviolets et sac fabrique avec cette feuille - Google Patents

Feuille de protection contre les rayonnements ultraviolets et sac fabrique avec cette feuille Download PDF

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Publication number
WO2001070856A1
WO2001070856A1 PCT/JP2001/002254 JP0102254W WO0170856A1 WO 2001070856 A1 WO2001070856 A1 WO 2001070856A1 JP 0102254 W JP0102254 W JP 0102254W WO 0170856 A1 WO0170856 A1 WO 0170856A1
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Prior art keywords
group
ultraviolet
carbon atoms
layer
sheet
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PCT/JP2001/002254
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English (en)
Japanese (ja)
Inventor
Tomohiro Nagao
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Idemitsu Petrochemical Co., Ltd.
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Application filed by Idemitsu Petrochemical Co., Ltd. filed Critical Idemitsu Petrochemical Co., Ltd.
Priority to AU2001244554A priority Critical patent/AU2001244554A1/en
Publication of WO2001070856A1 publication Critical patent/WO2001070856A1/fr

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G02B5/208—Filters for use with infrared or ultraviolet radiation, e.g. for separating visible light from infrared and/or ultraviolet radiation

Definitions

  • the present invention relates to an ultraviolet cut sheet and a bag-made product thereof.
  • barrier layer including a metal deposition layer and a coating layer of carbon or the like.
  • a thin film in which fine particles such as zinc oxide are dispersed is provided.
  • the means (7) uses a polyolefin film to solve the problem of environmental adaptability in (6).
  • a large amount of an ultraviolet absorber is mixed to improve ultraviolet absorption. It is necessary that the UV absorber has poor compatibility with the polyolefin, so the absorber bleeds and significantly impairs the appearance of the sheet. There's a problem.
  • the purpose of the present invention is to provide power sheets and their bag-making products. Disclosure of the invention
  • the ultraviolet cut sheet according to the present invention has a general formula (I)
  • R 1, R 2, and R 3 independently represent hydrogen, a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, An aralkyl group having 7 to 30 carbon atoms, a substituted or unsubstituted alkoxy group having 1 to 30 carbon atoms, an substituted or unsubstituted aryloxy group having 6 to 30 carbon atoms, a thioalkyl group having 1 to 30 carbon atoms, Represents a substituted or unsubstituted amino group or halogen, wherein the substituent is an alkyl group having 1 to 30 carbon atoms, an alkoxy group having 1 to 30 carbon atoms, or a 7 to 30 carbon atoms.
  • alkyl carbonyl group having 1 to 30 carbon atoms A oxycarbonyl group, a vinyl group, an arinocarbinole group, a carbamoyl group, a phenyl group, a nitro group, a hydroxyl group, or a halogen.
  • specific examples of the alkyl group include a methyl group, an ethyl group, and n-propyl.
  • Linear alkyl group such as a group, branched alkyl group such as i-propyl group, i-butyl group, sec-butyl group, and cyclic alkyl group such as cyclopentyl group and cyclohexyl group. .
  • Examples of the aryl group include a phenyl group, a biphenyl group, a naphthyl group, and a styryl group.
  • Examples of the aralkyl group include a benzyl group.
  • Examples of the alkoxy group include a methoxy group, an ethoxy group, a propoxy group, and a butoxy group. The alkyl group in the alkoxy group may be either linear or branched as described above.
  • Examples of the aryloxy group include a phenoxy group and a naphthoxy group.
  • Examples of the thioalkyl group include a thiomethyl group, a thioethyl group, a thiopropyl group, a thiobutyl group, a thiopentyl group, a thiohexyl group, a thioheptyl group, and a thiooctyl group.
  • the alkyl group may be linear or branched.
  • Examples of the amino group include an NH 2 group, a monoalkylamino group, and a dialkylamino group.
  • halogen examples include a fluoro group, a chloro group, a bromo group, and an odo group.
  • auxiliaries in the present invention as shown in the above general formula, various auxiliaries consisting of a compound having a 2-amino-1,4,6-disubstituted triazine skeleton or a polymer having the skeleton are employed.
  • the following compounds [1] and [2] can be employed.
  • UVA various types can be used as the UV absorber (hereinafter referred to as UVA), such as triazoles, benzoates, cyanoacrylates, triazines, salicylic acids, benzophenones, anilide oxalates, and the like.
  • UVA can be used as the UV absorber (hereinafter referred to as UVA), such as triazoles, benzoates, cyanoacrylates, triazines, salicylic acids, benzophenones, anilide oxalates, and the like.
  • Nickel complex UVA or the like can be employed, but triazole UVA is preferably used in consideration of compatibility with the polyolefin resin.
  • the triazole-based UVA the following compounds [3] to [5] can be used. Among the following [3] to [5], [3] is preferable in view of exhibiting a higher ultraviolet absorbing effect.
  • the ultraviolet cut sheet is provided with the polyolefin layer containing the ultraviolet absorbent and the auxiliary having the structure of the general formula [I], the ultraviolet cut efficiency is extremely high, and It is possible to provide an ultraviolet cut sheet having an ultraviolet transmittance of 360 nm of 5% or less, preferably 3% or less, more preferably 1% or less, and in which an absorbent or the like in the sheet is hard to be dropped.
  • an ultraviolet cut sheet having an ultraviolet transmittance of 360 nm of 5% or less, preferably 3% or less, more preferably 1% or less, and in which an absorbent or the like in the sheet is hard to be dropped.
  • it since it is made of polyolefin-based sheet, it does not generate harmful substances such as chlorine-based gas and dioxin when incinerated and disposed of, and has high environmental adaptability.
  • the UV cut sheet described above may have a single-layer structure or a multilayer structure.However, in consideration of imparting appropriate flexibility to the sheet and further reducing the bleed-out of auxiliaries and UVA, a polyolefin layer is used. It is preferably a multilayer structure containing The multilayer structure is not particularly limited as long as it has two or more layers, but is preferably 3 to 10 layers, and more preferably 3 to 5 layers.
  • the resin layer has a three-layer structure including a hard resin layer, a soft resin layer, and a hard resin layer, and the soft resin layer is the polyolefin layer.
  • the raw resin for the polyolefin-based sheet constituting the ultraviolet cut sheet is not particularly limited, and various homopolymers and copolymers of olefins, and mixtures thereof can be used.
  • the monomer constituting the homopolymer ethylene, propylene, 1-butene, isoprene, butadiene and the like can be employed.
  • the copolymer examples include an ethylene- ⁇ -olefin copolymer, an ethylene-cyclic olefin copolymer, a propylene-olefin copolymer, an ethylene-vinyl acetate copolymer, and an ethylene-acrylate copolymer.
  • a polymer or the like can be employed.
  • the hard resin layer is preferably made of a polypropylene (hereinafter, referred to as “ ⁇ ”) resin in consideration of the sheet surface strength and the like.
  • MO PP propylene-ethylene random PP
  • propylene-ethylene-propylene ternary random PP block PP
  • stereoregular syndiotactic polypropylene blends of these
  • LDPE low-density polyethylene
  • L LDPE Linear low density polyethylene
  • EPR ethylene-propylene rubber
  • SBR styrene-butadiene rubber
  • the polyolefin layer (soft resin layer) is preferably a polyethylene resin in consideration of imparting appropriate flexibility to the sheet.
  • Polyethylene resins include low-density polyethylene (LDPE) and linear low-density polyethylene (L LDPE) consisting of a copolymer of ethylene with a small amount of ⁇ -olefin (C4, C6, C8, etc.).
  • Meta-cyclopentadiene L LDPE ethylene-vinyl acetate copolymer (EVA), ethylene-ethyl acrylate copolymer (EEA), ethylene-methyl acrylate copolymer (EMA), ethylene-methyl methacrylate copolymer
  • EMMA polymer
  • EMMA meta-mouthed LLDPE or EVA
  • the UV cut sheet has a thickness of 0.1 to 0.4 mm, a total light transmittance of 80% or more, a total haze of 5% or less, an external haze of 2% or less, and a tensile modulus of 50 to: Preferably it is 1 000 MPa.
  • the thickness of the sheet is less than 0.1 mm, the auxiliary agent and UVA may easily bleed out from the sheet.
  • the transparency may deteriorate.
  • it is 0.15 to 0.3 mm, more preferably 0.15 to 0.2 mm.
  • the total light transmittance is less than 80%, the transparency becomes poor. More preferably, it is 90% or more.
  • the total haze exceeds 5% and the external haze exceeds 2%, the transparency of the sheet is undesirably reduced.
  • the tensile modulus is less than 50 MPa, the sheet becomes too soft and lacks strength, while if it exceeds 15 O OMPa, the sheet becomes too stiff (insufficient flexibility).
  • the secondary workability is deteriorated.
  • it is 50 to 500 MPa, more preferably 50 to 300 MPa.
  • the polyolefin layer preferably contains a light stabilizer (HALS).
  • HALS light stabilizer
  • the light stabilizer include a hindered amine light stabilizer (N, N'-bis (3-a.minopropyl) ethylenediamine-1,2,4-bis [N-butyl-N- (1,2,2,6, , 6-Pentamethyl-1-4-piperidyl) amino] — 6-Chloro-1,3,5-triazine condensate, etc., Benzoate light stabilizer (bis (2,2,6,6-tetramethyl-1-piperidyl) Etc.) can be adopted.
  • the weather resistance of the obtained ultraviolet light sheet can be improved.
  • a bag-making article according to the present invention is characterized in that the ultraviolet light sheet according to any one of claims 1 to 8 is used.
  • the ultraviolet cut sheet since the above-mentioned ultraviolet cut sheet is used, the ultraviolet cut effect is extremely high, and deterioration of the contents due to ultraviolet rays can be prevented. In addition, since there is little bleed-out of auxiliaries, UVA, etc., even when used at high temperatures, the bleed-out does not deteriorate the appearance of the bag and does not cause contamination of the contents.
  • Such bag-made products can be suitably used for pharmaceutical packaging bags, cosmetics packaging bags, stationery packaging bags, CD cases, insurance card cases, and the like.
  • FIG. 1 is a schematic diagram of an ultraviolet power sheet manufacturing apparatus according to one embodiment of the present invention.
  • This manufacturing apparatus includes a T-die 12 of an extruder (not shown), a metal endless belt 15 wound between a first cooling roll 13 and a second cooling roll 14, and an ultraviolet cut.
  • a third cooling roll 16 which comes into contact with the first cooling roll 13 via the sheet 11 and the metal endless velvet 15 and a fourth roll 17 provided near the second cooling roll 14 It is comprised including.
  • the first cooling roll 13 has a surface coated with an elastic material 18 such as fluororubber.
  • This elastic material 18 has a hardness (according to JIS K_6301 ⁇ type) of 60 degrees and a thickness of 10 mm.
  • the hardness and the thickness can be appropriately set according to the thickness of the sheet, the raw material and the like, but are preferably 95 degrees or less and 3 mm or more in thickness.
  • the metal endless belt 15 is made of stainless steel or the like, and has a mirror surface with a maximum height Ry specified in JIS B 0601-1994 of 0.5 ⁇ m or less.
  • At least one of the first and second cooling rolls 13 and 14 has a rotating shaft 19 connected to a rotation driving means (not shown).
  • the third cooling roll 16 also has a mirror surface having a maximum height Ry of 0.5 ⁇ m or less.
  • the cooling roll 16 contacts the first cooling roll 13 via the ultraviolet cut sheet 11 and the metal endless velvet 15, and is pressed by the endless belt 15 toward the cooling roll 16. It is provided so as to embrace the ultraviolet light sheet 11. That is, the metal endless belt 15 and the ultraviolet power sheet 11 in contact with the endless velvet 15 are meandering around a part of the outer peripheral surface of the third cooling roll 16. I have.
  • the fourth roller 17 guides the UV cut sheet 11 so that the UV cut sheet 11 is pressed against the second cooling roll 14 via the endless belt 15.
  • Each cooling roll 13, 14, 16 has a water-cooled type, etc. Temperature control means (not shown) is provided.
  • a cooling roll 21 is further provided in front of the first cooling port 13 in the endless belt 15, and an endless belt 15 extending to the first cooling roll 13 is provided. May be cooled beforehand.
  • the cooling hole 21 also functions for adjusting the tension of the endless belt 15.
  • each of the cooling rolls 13 and 14 was kept so that the surface temperature of the metal endless belt 15 and the third cooling roll 16 directly in contact with the ultraviolet cut sheet 11 was maintained at a dew point or higher and 50 ° C or lower. Keep the temperature control of 16.
  • a polyethylene resin pellet is prepared as a raw material of the ultraviolet cut sheet 11 supplied to the extruder.
  • UVA, auxiliaries and light stabilizers or their master batch (M / B) are also added.
  • the above compound [3] was used, and this was added to the raw material resin at 4000 ppm [1].
  • the above compound [1] was used as an auxiliary agent, and this was added to the raw material resin at 2000 ppm.
  • HAL S the following compound [6] was used, and 1000 ppm was added to the raw resin.
  • the molten resin sheet 11 extruded from the T die 12 is converted into an endless belt 15 which is in contact with the first cooling roll 13, and (3)
  • the UV cut sheet (11) is introduced into the space between the first and third cooling rolls (13, 16) so as to come into contact with the cooling roll (16) at substantially the same time. And cool to below 50 ° C.
  • the elastic member 18 is elastically deformed by being compressed by the pressing force between the first and third cooling rolls 13 and 16.
  • the ultraviolet cut sheet 11 is pressed in a planar manner by the two rolls 13 and 16.
  • the surface pressure at this time is 0.1MPa to 20.OMPa.
  • the UV cut sheet 11 is pressed against the third cooling port 16 with the mirror endless belt 15 and cooled to 50 ° C. or less.
  • the ultraviolet cut sheet 11 pressed by the endless belt 15 toward the cooling roll 16 is embraced by the cooling roll 16 at an angle 0 2 from the center of the cooling roll 16, and at the hugging angle 02 portion.
  • the endless belt 15 and the third cooling roll 16 are in planar contact with each other.
  • the surface pressure at this time is 0.01 MPa to 0.5 MPa.
  • the ultraviolet power cutting sheet 11 is moved to the second cooling roll 14 side together with the rotation of the endless belt 15, and this ultraviolet light cutting is performed.
  • the sheet 11 is pressed against the second cooling roll 14 via the endless belt 15 and cooled to 50 ° C. or lower to manufacture the ultraviolet sheet 11 of the present embodiment.
  • the ultraviolet cut sheet 11 is moved from the center of the cooling roll 14 via the endless belt 15.
  • Angle ⁇ Surface press contact at three parts. The surface pressure at this time is from 0.1 MPa to 0.5 MPa.
  • the ultraviolet light sheet 11 cooled by the third cooling port 16 may be directly taken out without moving to the second cooling port 14 side.
  • the ultraviolet power sheet 11 obtained as described above can be suitably used as a sheet using an adhesive such as a seal, a printing ink such as a label, a protective sheet for a rubber tire or a urethane sponge.
  • the UV cut sheet 11 is subjected to secondary processing such as heat sealing, high frequency sealing, ultrasonic sealing, and other secondary processing such as sewing to make it into a bag-formed product, so that it can be used for food, medicine, cosmetics, stationery, etc. It can be suitably used as a transparent packaging material for packaging CDs and the like.
  • the angle 0 1 portion of the first and third rolls 13 and 16 in which the elastic material 18 is elastically deformed with respect to the ultraviolet cut sheet 11 extruded from the T die 12 Then, the sheet 11 is pressed and cooled by the two rolls 13 and 16 at the same time. Subsequently, the sheet 11 is formed by the metal endless belt 15 and the third cooling roll 16 at the angle of 0 2. After pressing and cooling, the sheet 11 is pressed and cooled by the endless belt 15 and the second cooling roll 14 at the angle 0 3 of the second cooling roll 16, resulting in high transparency. UV-cut sheet 11 can be manufactured at high speed.
  • the ultraviolet cutting efficiency is extremely high, and the transmittance of ultraviolet rays at 200 to 360 nm is 5% or less, preferably 3%. % Or less, more preferably 1% or less, and it is possible to provide an ultraviolet ray power sheet in which an absorbent or the like in the sheet is less likely to bleed out.
  • an apparatus having the endless belt 15 is used as a manufacturing apparatus for manufacturing the ultraviolet cut sheet 11, but the present invention is not limited to this, and any sheet manufacturing apparatus can be adopted.
  • the structure of the ultraviolet cut sheet 11 is a single-layer structure, but is not limited thereto, and a sheet having two or more layers may be used.
  • lamination may be performed on an endless belt using an extruder corresponding to each layer, or a molten film preliminarily laminated by coextrusion may be supplied onto the endless belt of the manufacturing apparatus and cooled.
  • polyethylene resin pellets were prepared as raw materials for the UV cut sheet 11 to be supplied to the extruder.
  • UVA, auxiliaries and light stabilizers were also added.
  • the material is not limited to this, and may be a masterbatch of a raw material composed of two components, UVA, polyolefin, auxiliary and polyolefin, or three components of UVA, auxiliary and polyolefin. Considering the measurement accuracy and handling, it is preferable to make a master batch.
  • the UVA or auxiliary is 0.5 to 30% by weight of the whole master batch, and preferably 1 to 30% by weight. It is 20% by weight, more preferably 5 to 15% by weight.
  • the masterbatch of the above two components when the remaining UVA or auxiliary is added, when the three components of UVA, auxiliary and polyolefin are used, the total amount of UVA and auxiliary is 3 From the viewpoint of the whole components, it is preferably 0.5 to 20% by weight, more preferably 1 to 15% by weight or less, and still more preferably:! ⁇ 10 weight. / 0 .
  • the total amount of UVA and auxiliaries is 0.5 to 20 wt. / 0 is preferable, more preferably:! To 15% by weight or less, and still more preferably 1 to 10% by weight.
  • the present invention is not limited thereto, and the above-mentioned compound [2], which is a polymer-based auxiliary, may be used.
  • UV absorber a triazole-based UVA [3] was used, but it is not limited to this. That is, other triazole-based UVA such as the above-mentioned compounds [4] and [5] may be used, and benzoate-based, cyanoacrylate-based, triazine-based, salicylic acid-based, benzophenone-based, nickel complex UVA, etc. May be adopted.
  • benzoate UVA examples include the following compound [7].
  • cyanoacrylate-based UVA for example, the following compound [8] and the like can be mentioned.
  • Examples of the triazine-based UVA include the following compound [9]. OC6H13
  • Examples of the salicylic acid-based UVA include the following compound [10].
  • benzophenone-based UVA examples include the following compounds [] and [2].
  • Examples of the nickel complex UVA include the following compound [13]. ⁇ 13 ⁇ As the light stabilizer (HALS), the compound [6] has been used, but is not limited thereto, and various compounds acting as a radical scavenger can be employed. For example, the following compound [1] 4] can be adopted.
  • HALS light stabilizer
  • the compound [6] has been used, but is not limited thereto, and various compounds acting as a radical scavenger can be employed.
  • the following compound [1] 4] can be adopted.
  • a specific structure, shape, and the like when implementing the present invention may be another structure within a range that can achieve the object of the present invention.
  • the resin for the middle layer (soft resin layer) is formed using an extruder with a screw diameter of 9 Omm, and the resin for both outer layers (hard resin layer) is formed using an extruder with a screw diameter of 5 Omm. did.
  • the T-die of the extruder used had a width of 800 mm.
  • an ultraviolet cut sheet having a hard resin layer / soft resin layer / hard resin layer ratio of 18 to 1 and a thickness of 0.2 mm was obtained under the above-described production method and conditions. .
  • Intermediate layer soft resin layer: EVA (Evaflex EV 360 manufactured by Mitsui Dubon Polychemical Co., Ltd.)
  • an ultraviolet cut sheet having a layer ratio of 18,1 and a thickness of 0.2 mm was obtained by the above-described production method and conditions.
  • Auxiliary agent The same as in Example 1 for the type and amount of addition.
  • UV absorber type and amount added to the intermediate layer were the same as in Example 1. , Not added to both outer layers.
  • an ultraviolet light sheet having a layer ratio of 1/8 and a thickness of 0.2 mm was obtained by the above-described production method and conditions.
  • HAL S Light stabilizer
  • an ultraviolet ray power sheet having a layer ratio of 1/8 and a thickness of 0.2 mm was obtained.
  • Auxiliary agent The same as in Example 1 for the type and amount of addition.
  • UV absorber type and amount added to the intermediate layer are the same as in Example 3. , Not added to both outer layers.
  • HAL S Light stabilizer
  • an ultraviolet ray reinforced sheet having a layer ratio of 1/1/8/1 and a thickness of 0.2 mm was obtained by the above-described production method and conditions.
  • Auxiliary agent The same as in Example 1 for the type and amount of addition.
  • UV absorber type and amount added to the intermediate layer were the same as in Example 1. To both outer layers Not added.
  • an ultraviolet light sheet having a layer ratio of 1/8 and a thickness of 0.2 mm was obtained by the above-described production method and conditions.
  • Auxiliary agent The same as in Example 1 for the type and amount of addition.
  • HAL S Light stabilizer
  • an ultraviolet light sheet having a layer ratio of 1 Z81 and a thickness of 0.3 mm was obtained by the above-described production method and conditions.
  • HAL S Light stabilizer
  • an ultraviolet ray power sheet having a layer ratio of 181, and a thickness of 0.4 mm was obtained by the above-described production method and conditions.
  • an ultraviolet ray reinforced sheet having a layer ratio of 1 Z81 and a thickness of 0.15 mm was obtained by the above-described production method and conditions.
  • Auxiliary agent The same as in Example 8 in both type and amount added.
  • UV absorber the type is the same as in Example 1.
  • the amount added to the intermediate layer 5000 ppm, not added to both outer layers.
  • an ultraviolet ray power sheet having a layer ratio of 18 to 1 and a thickness of 0.2 mm was obtained by the above-described production method and conditions.
  • Auxiliary agent The same as in Example 1 for the type and amount of addition.
  • UV absorber Type and amount added to each layer are the same as in Example 2.
  • HAL S Light stabilizer
  • an ultraviolet light sheet having a layer ratio of 1Z8 and a thickness of 0.2 mm was obtained by the above-described production method and conditions.
  • Example 2 [3] Auxiliary agent: The same as in Example 1 for the type and amount of addition. [4] Ultraviolet absorber: The type and the amount of addition to each layer are the same as in Example 2.
  • HAL S Light stabilizer
  • an ultraviolet light sheet having a layer ratio of 1/8/1 and a thickness of 0.2 mm was obtained by the above-described production method and conditions.
  • Auxiliary agent The same as in Example 1 for the type and amount of addition.
  • UV absorber Type and amount added to each layer are the same as in Example 2.
  • HAL S Light stabilizer
  • an ultraviolet cut sheet having a layer ratio of 1/8 and a thickness of 0.2 mm was obtained by the above-described production method and conditions.
  • Auxiliary agent The same as in Example 1 for the type and amount of addition.
  • UV absorber Type and amount added to each layer are the same as in Example 2.
  • HAL S Light stabilizer
  • an ultraviolet ray reinforced sheet having a layer ratio of 1 / ⁇ 8/1 and a thickness of 0.2 mm was obtained by the above-described production method and conditions.
  • UV absorber Type and amount added to each layer are the same as in Example 2.
  • Light stabilizer (HAL S) Type and amount added to each layer are the same as in Example 1.
  • an ultraviolet cut sheet having a layer ratio of 1Z81 and a thickness of 0.2 mm was obtained by the above-described production method and conditions.
  • Both outer layers RPP (F-744 NP, manufactured by Idemitsu Petrochemicals Co., Ltd.) as a UV absorber, 500 ppm of the compound (3), and CHI as a light stabilizer (HAL S). 100 ppm of MA S SORB 1 19 FL (manufactured by Ciba Charity Chemicals Co., Ltd.)!
  • an ultraviolet ray reinforced sheet having a layer ratio of 1/8 and a thickness of 0.2 mm was obtained by the above-described production method and conditions.
  • the layer ratio 1 81.
  • a UV sheet with a thickness of 0.2 mm was obtained.
  • Compound (1) (IRGANOX 565, manufactured by Ciba Specialty Chemicals Co., Ltd.) at 2000 ppm, and CH IMAS as a light stabilizer (HALS).
  • SORB 1 19 FL manufactured by Ciba Charity Chemicals Co., Ltd.
  • MB 2 coloring mainly with phthalodian paint
  • an ultraviolet ray power sheet having a layer ratio of 18/1 and a thickness of 0.2 mm was obtained by the above-described production method and conditions.
  • Intermediate layer LLDPE (affinity PL 1880, manufactured by Dow Chemical Co., Ltd.) and compound [3] (Chemisorp 79, manufactured by Chemipro Kasei Co., Ltd.) as an ultraviolet absorber at 4500 ppm, auxiliary 2000 ppm and a light stabilizer (HALS) as CH IMAS SORB 119 FL (Cibas Charity Chemical Co., Ltd.). (Culz Co., Ltd.) added with 1 000 ppm.
  • LLDPE affinity PL 1880, manufactured by Dow Chemical Co., Ltd.
  • compound [3] Choemisorp 79, manufactured by Chemipro Kasei Co., Ltd.
  • HALS light stabilizer
  • Both outer layers RP P (F-744 NP manufactured by Idemitsu Petrochemical Co., Ltd.) without adding an ultraviolet absorber, and as a light stabilizer (HAL S), CHI MAS SORB 119 FL ( Antibacterial agent (silver oxide (Ag20)) and boric acid monoacid-based glass (Si02 / B203 / A1203 / Na2) were added to a mixture obtained by adding 1,000 ppm of Ciba Chemicals Co., Ltd. / Zn0)) added at 2000 ppm.
  • HAL S light stabilizer
  • CHI MAS SORB 119 FL Antibacterial agent (silver oxide (Ag20))
  • boric acid monoacid-based glass Si02 / B203 / A1203 / Na2
  • an ultraviolet cut sheet having a layer ratio of 1/181 and a thickness of 0.2 mm was obtained by the above-described production method and conditions.
  • Auxiliary agent The same as in Example 1 for both the type and amount added.
  • UV absorber the type is the same as in Example 1. Addition to middle layer-2500 ppm, not added to both outer layers.
  • HAL S Light stabilizer
  • the layer ratio 1 / / 1 8 1, to obtain an ultraviolet cut sheets having a thickness of 0. 2 mm.
  • HAL S Light stabilizer
  • an ultraviolet cut sheet having a layer ratio of 1: 1 and a thickness of 0.2 mm was obtained by the above-described production method and conditions.
  • Auxiliary agent The same as in Example 22 in both type and amount added.
  • an ultraviolet cut sheet having a layer ratio of 1/8/1 and a thickness of 0.2 mm was obtained by the above-described production method and conditions.
  • Intermediate layer LLDPE (Affinity PL 1880, manufactured by Dow Chemical Co., Ltd.), compound (3) (Chemisorp 79, manufactured by Chemipro Kasei Co., Ltd.) as an ultraviolet absorber, 4000 ppm, and as an auxiliary agent , Compound [1] (IRGANOX 565, manufactured by Ciba Specialty Chemicals Co., Ltd.) at 2000 ppm and CH IMAS SORB 119 FL (Cibas Charity Chemicals Co., Ltd.) as a light stabilizer (HALS). 3% of MB 2 added to 1 000 ppm of
  • ALS as CH I MAS SORB 119 FL (manufactured by Ciba Charity Chemicals Co., Ltd.) to which 1,000 ppm has been added, and a coloring masterbatch mainly composed of anthraquinone red (hereinafter referred to as MB3).
  • an ultraviolet cut sheet having a layer ratio of 18 to 1 and a thickness of 0.2 mm was obtained by the above-described production method and conditions.
  • UV absorber Type and amount added to each layer are the same as in Example 2.
  • HAL S Light stabilizer
  • an ultraviolet light sheet having a layer ratio of 1/8 Z1 and a thickness of 0.2 mm was obtained by the above-described production method and conditions.
  • HAL S Light stabilizer
  • an ultraviolet cut sheet having a layer ratio of 1:81 and a thickness of 2 mm was obtained by the above-described production method and conditions.
  • UV absorber not added to each layer.
  • HAL S Light stabilizer
  • an ultraviolet ray reinforced sheet having a layer ratio of 1Z8Z1 and a thickness of 0.2 mm was obtained by the above-described production method and conditions.
  • Intermediate layer Compound [15] (LA-31 manufactured by Asahi Denka Co., Ltd.) as an ultraviolet absorber was added to L LDPE (affinity PL 1880 manufactured by Dow Chemical Co., Ltd.) at 500 ppm, No additives were added, and 1,000 ppm of CHI MAS SORB 119 FL (manufactured by Ciba-Sharity Chemicals Co., Ltd.) was added as a light stabilizer (HAL S).
  • L LDPE affinity PL 1880 manufactured by Dow Chemical Co., Ltd.
  • HAL S light stabilizer
  • Both outer layers RPP (F-744 NP Idemitsu Petrochemical Co., Ltd.) and compound [15] (LA-31 Asahi Denka Co., Ltd.) as an ultraviolet absorber at 500 ppm.
  • RPP F-744 NP Idemitsu Petrochemical Co., Ltd.
  • compound [15] LA-31 Asahi Denka Co., Ltd.
  • As a light stabilizer (HAL S) CHI MAS SORB 119 FL (manufactured by Ciba Specialty Chemicals) is added at 1,000 ppm.
  • Tables 1 and 2 summarize the raw materials, additives, and the amounts of the additives used in the above Examples and Comparative Examples.
  • Example 1 0.2 200 3 90 ⁇ ⁇ ⁇ Example 2 0.2 200 3 90 ⁇ ⁇ ⁇ Example 3 0.2 200 3 90 ⁇ ⁇ ⁇ Example 4 0.2 200 3 90 ⁇ ⁇ ⁇ Example 5 0.2 200 3 90 ⁇ ⁇ ⁇ Example 6 0.2 200 3 90 ⁇ ⁇ ⁇ Example 7 0.3 200 3 90 ⁇ ⁇ ⁇ (Table 2)
  • Example 8 0 .4 200 3 90 ⁇ ⁇ ⁇ Example 9 0.15 200 3 90 ⁇ ⁇ ⁇ Example 1 0 0.2 .200 3 90 ⁇ ⁇ ⁇ Example 1 1 0.2 .200 3 90 ⁇ ⁇ ⁇ Example 1 2 0.2 200 3 90 ⁇ ⁇ ⁇ Example 1 3 0.2 2 300 3 ⁇ ⁇ ⁇ ⁇ Example 1 4 0.2 2 200 3 90 ⁇ ⁇ ⁇ Example 1 5 0.2 200 3 90 ⁇ ⁇ ⁇ Example 1 6 0.2 2 3 90 ⁇ ⁇ ⁇ ⁇ Example 1 7 0.2 2 3 90 ⁇ ⁇ ⁇ ⁇ Example 1 8 0 2 200 3 90 ⁇ ⁇ ⁇ Example 1 9 0 2 200 3 90 ⁇ ⁇ ⁇ Example 2 0 0.2 0.2 3 90 ⁇ ⁇ ⁇ Example 2 1 0.2.200 3 90 ⁇ ⁇ ⁇ Example 2 1 0.2.200 3 90 ⁇ ⁇ ⁇ Example 2 1 0.2.200 3 90 ⁇ ⁇ ⁇ Example 2 1 0.2.200 3 90
  • UV-coated sheet obtained in each of the above Examples and Comparative Examples the tensile strength, total haze, external haze, total light transmittance, ultraviolet (UV) cut property, and bleed property were measured and evaluated. A bag-made product using the sheet was evaluated. Here, measurement and evaluation of each item were performed as follows.
  • the film is irradiated with light and the total light transmittance (T t), which represents the total amount of light transmitted, is reflected by the film.
  • the internal haze and the external haze are determined from the ratio with the diffused light transmittance (T d) transmitted by the following formula.
  • the total light transmittance (T t) is the sum of the parallel light transmittance (T p) and the diffuse light transmittance (T d) transmitted through the same axis as the incident light.
  • the internal haze was measured by applying silicone oil to both sides of the film, sandwiching both sides of the film with a glass plate, and eliminating the influence of the outside of the film.
  • the total haze was determined by the following equation from the internal haze and the external haze obtained by the above equation.
  • the haze was measured by the method according to JISK-7105 using the apparatus used in (2) All haze and external haze.
  • the measurement was performed using a UV self-recording spectrophotometer (manufactured by Hitachi, Ltd.).
  • ⁇ the case where the ultraviolet transmittance in the entire range of 200 to 360 nm is 1% or less
  • the case where the transmittance of 260 nm is 10% or more is indicated by XI
  • the transmittance of 250 to 360 nm is 5%.
  • the case of 0% or more was defined as X2.
  • the UV sheet was placed in a thermostat at 40 ° C, taken out one month later, and the sheet was visually inspected for bleeding due to bleed. As a result, the case where there was no bleeding and dirt was evaluated as ⁇ , and the case where there was remarkable dirt was evaluated as X.
  • the ultraviolet light sheet is sealed with a heat sealing machine to form a bag.
  • a polyurethane sponge is placed in the bag, and then put in a xenon weather meter for 48 hours. Then, the deterioration of the bag and the sponge is visually observed. did. As a result. A case where no deterioration was observed was evaluated as ⁇ , a case where the sponge deteriorated was evaluated as X1, and a case where both the bag and the sponge deteriorated was evaluated as X2.
  • Tables 3 and 4 show the results of the above evaluations.
  • the sheet obtained in Comparative Example 1 was comparable to the sheet obtained in the Example in transparency, gloss, flexibility, and the like, but did not use an auxiliary agent.
  • the UV cut was insufficient, and as a result, it was found that the content of sponge was deteriorated in the evaluation of bag-made products.
  • Comparative Example 2 two types of ultraviolet absorbers were added because no auxiliary agent was used, so that the transmission of ultraviolet light of 260 nm, which was a problem in Comparative Example 1, was prevented. It can be seen that the bleeding property has deteriorated.
  • ultraviolet-ray cut efficiency is very high and can be utilized as a protective sheet of the site
  • the sheet of the present invention does not generate harmful substances such as chlorine-based gas and dioxin even in the case of incineration disposal, it has high environmental adaptability, and the absorbent in the sheet does not easily bleed out. It has high weather resistance and can be widely used in various parts.

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Laminated Bodies (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

L'invention concerne une feuille de protection contre les rayonnements ultraviolets, n'étant pas sujette à la diffusion d'un élément d'absorption de rayonnements ultraviolets et conservant une absorption de rayonnements ultraviolets suffisante. Cette feuille présente une transparence et une brillance excellentes et comprend une résine polyoléfine parfaitement apte à être utilisée dans l'environnement. Cette feuille comprend une couche polyoléfine renfermant aussi bien un auxiliaire comprenant un composé représenté par la formule générale (I) qu'un élément d'absorption de rayonnements ultraviolets et possède un facteur de transmission de rayonnements ultraviolets d'au plus 5 % par rapport aux rayonnements ultraviolets ayant des longueurs d'ondes comprises entre 200 et 360 nm.
PCT/JP2001/002254 2000-03-24 2001-03-22 Feuille de protection contre les rayonnements ultraviolets et sac fabrique avec cette feuille WO2001070856A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001244554A AU2001244554A1 (en) 2000-03-24 2001-03-22 Ultraviolet-shielding sheet and bag made thereof

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2000084170 2000-03-24
JP2000-84170 2000-03-24

Publications (1)

Publication Number Publication Date
WO2001070856A1 true WO2001070856A1 (fr) 2001-09-27

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10338777A (ja) * 1997-06-10 1998-12-22 Kyodo Yakuhin Kk 安定化されたポリプロピレン樹脂組成物
JP2000136270A (ja) * 1998-10-30 2000-05-16 Dainippon Ink & Chem Inc 樹脂組成物およびその成形体
JP2000159945A (ja) * 1998-11-30 2000-06-13 Dainippon Ink & Chem Inc 樹脂組成物およびその成形体
JP2000191918A (ja) * 1998-12-25 2000-07-11 Dainippon Ink & Chem Inc 樹脂組成物およびその成形体

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10338777A (ja) * 1997-06-10 1998-12-22 Kyodo Yakuhin Kk 安定化されたポリプロピレン樹脂組成物
JP2000136270A (ja) * 1998-10-30 2000-05-16 Dainippon Ink & Chem Inc 樹脂組成物およびその成形体
JP2000159945A (ja) * 1998-11-30 2000-06-13 Dainippon Ink & Chem Inc 樹脂組成物およびその成形体
JP2000191918A (ja) * 1998-12-25 2000-07-11 Dainippon Ink & Chem Inc 樹脂組成物およびその成形体

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