WO2022065393A1 - 樹脂発泡シート - Google Patents

樹脂発泡シート Download PDF

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Publication number
WO2022065393A1
WO2022065393A1 PCT/JP2021/034894 JP2021034894W WO2022065393A1 WO 2022065393 A1 WO2022065393 A1 WO 2022065393A1 JP 2021034894 W JP2021034894 W JP 2021034894W WO 2022065393 A1 WO2022065393 A1 WO 2022065393A1
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WO
WIPO (PCT)
Prior art keywords
resin
foam sheet
polyethylene
sheet
resin composition
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PCT/JP2021/034894
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English (en)
French (fr)
Japanese (ja)
Inventor
正太 結城
哲也 落合
貴博 南
Original Assignee
積水化成品工業株式会社
日本電気硝子株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 積水化成品工業株式会社, 日本電気硝子株式会社 filed Critical 積水化成品工業株式会社
Priority to CN202180055736.7A priority Critical patent/CN116057025A/zh
Priority to JP2022552048A priority patent/JPWO2022065393A1/ja
Priority to KR1020227043550A priority patent/KR20230078955A/ko
Publication of WO2022065393A1 publication Critical patent/WO2022065393A1/ja

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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • 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
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/066—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of foam
    • 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
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
    • 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
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/32—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed at least two layers being foamed and next to each other
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C27/00—Joining pieces of glass to pieces of other inorganic material; Joining glass to glass other than by fusing
    • C03C27/06—Joining glass to glass by processes other than fusing
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • 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
    • B32B2266/00—Composition of foam
    • B32B2266/02—Organic
    • B32B2266/0214—Materials belonging to B32B27/00
    • B32B2266/025—Polyolefin
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/04—Homopolymers or copolymers of ethene
    • C08J2323/06—Polyethene

Definitions

  • the present invention relates to a resin foam sheet.
  • the resin foam sheet has excellent lightness and cushioning property by having a foam layer. Therefore, the resin foam sheet is used for various purposes.
  • this kind of resin foam sheet a sheet having a single layer structure of only a foam layer, a sheet having a non-foam layer as a layer other than the foam layer, and the like are known.
  • raw material resin for the resin foam sheet for example, polyethylene resin, polypropylene resin, polystyrene resin, polyester resin and the like are known.
  • a resin foam sheet having a single layer structure of only a foam layer is generally manufactured by an extrusion foam method.
  • This type of resin foam sheet is produced by a method in which a raw material resin is melt-kneaded together with a foaming agent by an extruder, and the obtained melt-kneaded product is extruded into a sheet from a circular die or a flat die and foamed.
  • a resin foam sheet having a multi-layer structure in which a foam layer and a non-foam layer are laminated can be obtained by a method of once producing a resin foam sheet having only a foam layer and then laminating a resin film to be a non-foam layer, or a method of laminating a resin film to be a non-foam layer, or a method of laminating a resin film to be a non-foam layer. It is manufactured by a method of coextruding with a layer or the like.
  • the resin foam sheet is used as a raw material sheet when a container or the like is manufactured by thermoforming, or is used as a cushioning material in a flat sheet state.
  • Patent Document 1 describes the use of a multi-layered resin foam sheet provided with a non-foam layer as an interstitial paper between adjacent glass plates when a plurality of glass plates are stacked.
  • the resin foam sheet It is considered effective to form at least the surface layer of the resin foam sheet with a relatively soft resin such as polyethylene resin in order to make the resin foam sheet exhibit excellent cushioning properties.
  • a relatively soft resin such as polyethylene resin
  • some polyethylene resins are commercially available in a state where additives such as antioxidants and lubricants are mixed.
  • the additive is also present on the surface of the resin foam sheet, and the additive may adhere to the mating material in contact with the surface.
  • the amount of the additive attached is very small, the adhesion of the additive can be a problem when the mating material is an article that requires high cleanliness such as an electronic device-related part.
  • an object of the present invention is to provide a resin foamed sheet having a low possibility of deposits on the mating material.
  • the present invention for solving the above problems
  • the resin foam sheet is composed of a resin composition containing polyethylene resin on at least one surface thereof.
  • a resin foam sheet having a density of the polyethylene resin contained in the resin composition of 928 kg / m 3 or more and 933 kg / m 3 or less and a crystallinity of the polyethylene resin of 44% or more and 58% or less. I will provide a.
  • the present invention for solving the above problems With at least one foam layer, A resin foamed sheet having a multilayer structure in which the foamed layer and another layer are laminated.
  • the resin foam sheet is composed of a resin composition containing polyethylene resin on at least one surface thereof.
  • a resin foam sheet having a density of the polyethylene resin contained in the resin composition of 928 kg / m 3 or more and 933 kg / m 3 or less and a crystallinity of the polyethylene resin of 44% or more and 58% or less. offer.
  • FIG. 1 is a schematic view showing one usage mode of the resin foam sheet.
  • FIG. 2 is a schematic cross-sectional view showing the structure of the resin foam sheet of one embodiment.
  • FIG. 3 is a schematic cross-sectional view showing a resin foam sheet according to another embodiment.
  • FIG. 4 is a schematic cross-sectional view showing a resin foam sheet according to another embodiment.
  • FIG. 5 is a schematic view showing a method for evaluating the transferability of an additive from a resin foam sheet to a mating material.
  • the use of the resin foam sheet in the present embodiment is not particularly limited, and the resin foam sheet can be used for various purposes.
  • the transfer of additives the transfer of fatty acid compounds tends to be a problem.
  • the transfer of the fatty acid compound or the like to the mating material is suppressed by using a specific polyethylene resin for the resin foamed sheet.
  • the resin foam sheet in the present embodiment will be described in detail by taking the case of using it as a slip sheet for a glass plate as an example.
  • the resin foam sheet 1 of the present embodiment is used as a slip sheet for a glass plate.
  • the resin foam sheet 1 of the present embodiment is used as a slip sheet by interposing between adjacent glass plates 2 when a plurality of glass plates 2 are laminated in the vertical direction to form a laminated body 100. ..
  • the interleaving paper in the present embodiment is composed of the resin foamed sheet 1 produced by the extrusion foaming method. As shown in FIG.
  • the interleaving paper in the present embodiment is composed of a resin foam sheet 1 having a single-layer structure, and the foam layer 10 is exposed on the surface on both sides.
  • both sides of the foam layer 10 are contact surfaces in contact with the mating material (glass plate 2).
  • Examples of the glass plate 2 in the present embodiment include a glass plate for a substrate or a cover glass in a display panel such as a liquid crystal display or an organic EL display.
  • This type of glass plate generally has a high demand for cleanliness. Therefore, if a fatty acid compound or the like, which is mixed as an additive in many of the commercially available resins, adheres to this kind of glass plate, it tends to cause a problem. Therefore, the resin foamed sheet 1 of the present embodiment, which can suppress the migration of the fatty acid compound, is particularly effectively utilized by utilizing such an effect as the interleaving paper for the glass plate.
  • the resin foam sheet 1 (foam layer 10) of the present embodiment is composed of a resin composition containing a polyethylene resin.
  • the resin composition in the present embodiment contains the polyethylene resin and additives.
  • the resin composition of the present embodiment does not need to contain the polyethylene resin and the additive in a single state, and may contain a plurality of polyethylene resins and a plurality of additives.
  • the resin composition is, for example, a high-density polyethylene resin (PE-) produced by a catalytic method (medium-low pressure polymerization method) in a state where there is almost no branching in the molecular structure and a high density of 942 kg / m 3 or more. HD) may be contained as the polyethylene resin.
  • the resin composition contains, for example, a linear low density polyethylene resin (PE-LLD) produced so as to have a density of 910 kg / m 3 or more and 925 kg / m 3 or less by introducing a comonomer as the polyethylene resin. May be good.
  • PE-LLD linear low density polyethylene resin
  • the resin composition is, for example, a medium-density polyethylene resin (PE-) produced so as to have a density between the linear low-density polyethylene resin (PE-LLD) and the high-density polyethylene resin (PE-HD). MD) or the like may be contained as the polyethylene resin.
  • PE- medium-density polyethylene resin
  • PE-LLD linear low-density polyethylene resin
  • PE-HD high-density polyethylene resin
  • the resin composition may contain an ultra-low density polyethylene resin (PE-VLD) as the polyethylene resin.
  • the polyethylene resin may be, for example, a low-density polyethylene resin (PE-LD) produced by a high-pressure polymerization method and having a long-chain branch in the molecular structure.
  • the polyethylene resin contained in the resin composition of the present embodiment does not have to be only one of these polyethylene resins.
  • the resin composition of the present embodiment may contain a plurality of polyethylene resins among them. That is, the resin composition may contain a first polyethylene resin and a second polyethylene resin as the polyethylene resin.
  • the first polyethylene resin and the second polyethylene resin may be, for example, one of high-density polyethylene resin (PE-HD) and the other of low-density polyethylene resin (PE-LD), and both of them may be used. It may be a low density polyethylene resin (PE-LD).
  • PE-HD high-density polyethylene resin
  • PE-LD low-density polyethylene resin
  • the density of the polyethylene resin is preferably within a predetermined range in order to obtain a resin foamed sheet having a low possibility of deposits on the mating material.
  • the polyethylene resin in the resin composition of the present embodiment preferably has a density (density at 23 ° C.) of 928 kg / m 3 or more, and more preferably 930 kg / m 3 or more.
  • the polyethylene resin in the resin composition preferably has a density of 933 kg / m 3 or less, and more preferably 932 kg / m 3 or less.
  • one polyethylene resin having a density within the above range may be contained alone in the resin composition. ..
  • a plurality of polyethylene resins having a density within the above range may be prepared and included in the resin composition.
  • the density of the polyethylene resin in the state of being contained in the resin composition by combining a plurality of polyethylene resins containing the polyethylene resin whose density is out of the above range is within the above range. May be adjusted to. That is, when the resin composition contains a plurality of polyethylene resins, the ratio of the plurality of polyethylene resins may be adjusted so that the density in the state where the plurality of polyethylene resins are mixed is within the above numerical range. ..
  • the polyethylene resin having a preferable density as described above has a density of less than 928 kg / m 3 even if it is composed of, for example, a single type of low density polyethylene resin (PE-LD) having a concentration of 928 kg / m 3 or more and 93 kg / m 3 or less. It may be composed of the first polyethylene resin and the second polyethylene resin having a density of more than 933 kg / m 3 .
  • PE-LD low density polyethylene resin
  • the density of the polyethylene resin is, for example, when a plurality of polyethylene resins are contained in the resin composition, a mixture in which the plurality of polyethylene resins are blended in a mass ratio to be contained in the resin composition is prepared, and the mixture is melted. It can be obtained by preparing a sample from the melt-kneaded product obtained by kneading and measuring the density of the sample. When only one polyethylene resin is contained in the resin composition, the density can be measured using a sample prepared from the polyethylene resin.
  • the density of the polyethylene resin can be measured by, for example, the method described in JIS K7112, and can be determined by the D method (density tube).
  • the crystallinity of the polyethylene resin is preferably within a predetermined range in order to obtain a resin foam sheet having a low possibility of deposits on the mating material.
  • the crystallinity of the polyethylene resin is preferably 44% or more, more preferably 45% or more. It is more preferable that the crystallinity of the polyethylene resin exceeds 45%.
  • the polyethylene resin preferably has a crystallinity of 58% or less, more preferably 51% or less.
  • the crystallinity of the polyethylene resin is more preferably 47% or less.
  • one polyethylene resin having a crystallinity within the above range is used alone in the resin composition. It should be included.
  • the resin composition may contain a plurality of polyethylene resins having a crystallinity within the above range. Further, the crystallinity of the polyethylene resin in the state of being contained in the resin composition by combining a plurality of polyethylene resins containing the polyethylene resin whose crystallinity is out of the above range is in the above range. It may be adjusted so as to be inside.
  • the ratio of the plurality of polyethylene resins should be adjusted so that the crystallinity in the state where the plurality of polyethylene resins are mixed is within the above numerical range. Just do it.
  • the crystallinity of the polyethylene resin for example, when a plurality of polyethylene resins are contained in the resin composition, a mixture prepared by blending the plurality of polyethylene resins in a mass ratio to be contained in the resin composition is prepared, and the mixture is prepared. Can be obtained by preparing a sample from the melt-kneaded product obtained by melt-kneading and measuring the crystallinity of the sample. When only one polyethylene resin is contained in the resin composition, the crystallinity can be measured using a sample prepared from the polyethylene resin.
  • the crystallinity of the polyethylene resin can be measured by the method described in JIS K7122: 1987, JIS K7122: 2012 “Method for measuring transition heat of plastic”. That is, the crystallinity of the polyethylene resin can be measured by performing differential scanning calorimetry (DSC).
  • the sampling method and temperature conditions can be as follows. Fill the bottom of the aluminum measuring container with 5.5 ⁇ 0.5 mg so that there is no gap, and then cover with the aluminum lid. Next, a differential scanning calorimetry is performed using a "DSC7000X, AS-3" differential scanning calorimeter manufactured by Hitachi High-Tech Science Corporation. Under a nitrogen gas flow rate of 20 mL / min, the sample is heated and cooled in the following steps to obtain a DSC curve.
  • Step 1 Hold for 10 minutes after lowering the temperature from 30 ° C to -40 ° C.
  • Step 2 Raise the temperature from -40 ° C to 220 ° C (first temperature rise) and hold for 10 minutes.
  • Step 3 Lower the temperature (cool) from 220 ° C to -40 ° C and hold for 10 minutes.
  • Step 4) The temperature is raised from -40 ° C to 220 ° C (second temperature rise). All temperature raising and lowering are performed at a speed of 10 ° C./min. Alumina is used as the reference material.
  • the amount of heat of crystallization J / g is obtained from the area of the crystallization peak seen in the cooling process (step 3).
  • the ratio obtained by dividing this heat of crystallization by the theoretical heat of melting 285.7 J / g of a polyethylene perfect crystal is defined as the degree of crystallization.
  • the amount of heat of crystallization is determined by using the analysis software attached to the device, and the straight line connecting the point where the DSC curve separates from the baseline on the high temperature side and the point where the DSC curve returns to the baseline on the low temperature side, and the part surrounded by the DSC curve. Calculated from the area of.
  • the polyethylene resin has a density of 930 kg / m 3 or more and 932 kg / m 3 or less and a crystallinity of 45% or more and 51% in order to obtain a resin foam sheet having a low possibility of deposits on the mating material.
  • the following is particularly preferable.
  • the density in a state where the plurality of polyethylene resins are mixed is set to 930 kg / m 3 or more and 932 kg / m 3 or less, and crystals in a state where the plurality of polyethylene resins are mixed.
  • the degree of crystallization may be 45% or more and 51% or less.
  • the resin composition may be easily adjusted to be in a preferable state as described above by containing a plurality of polyethylene resins containing the first polyethylene resin and the second polyethylene resin.
  • the first polyethylene resin and the second polyethylene resin is a low-density polyethylene resin (PE-LD) which is a polymer product obtained by a high-pressure polymerization method.
  • the low-density polyethylene resin (PE-LD) has a long-chain branch, which is advantageous for capturing fatty acid compounds.
  • the low density polyethylene resin (PE-LD) is considered to be advantageous for forming a morphology having an amorphous region with a free volume together with a crystal region in the resin composition.
  • the long chain branch of polyethylene can be confirmed by, for example, 13 C-NMR. For example, if it can be confirmed by 13 C-NMR that an alkyl group having a length longer than that of a hexyl group exists, it can be determined that a long chain branch exists in polyethylene.
  • the low-density polyethylene resin (PE-LD) preferably has an alkyl group having a length of a heptyl group or more, and more preferably has an alkyl group having a length of an octyl group or more.
  • the resin composition containing two or more low density polyethylene resins (PE-LD).
  • PE-LD low density polyethylene resins
  • the peak of crystallization on the DSC curve of the resin composition becomes broad. That is, by containing two or more low-density polyethylene resins (PE-LD), the overall crystallization behavior of the polyethylene resin in the process of cooling the molten resin composition can be slowed down. Therefore, the resin foamed sheet containing two or more low-density polyethylene resins (PE-LD) is considered to be advantageous in that the formed morphology can be suppressed from being changed depending on the cooling conditions.
  • the polyethylene resin as described above preferably has a somewhat bulky molecular structure, and for example, it is preferable that the melt mass flow rate is moderately low.
  • the melt mass flow rate (MFR) of the polyethylene resin is preferably 6 g / 10 min or less.
  • the melt mass flow rate (MFR) of the polyethylene resin is more preferably 5 g / 10 min or less, further preferably 4 g / 10 min or less.
  • the melt mass flow rate (MFR) of the polyethylene resin is preferably 0.1 g / 10 min or more.
  • the melt mass flow rate (MFR) of the polyethylene resin is more preferably 0.2 g / 10 min or more, and further preferably 0.3 g / 10 min or more.
  • the melt mass flow rate (MFR) can be measured by JIS K7210: 1999 "Test method for melt mass flow rate (MFR) and melt volume flow rate (MVR) of plastic-thermoplastic plastic".
  • the melt mass flow rate (MFR) can be measured by "b) a method for measuring the time for a piston to travel a predetermined distance" described in the B method of the same standard.
  • the melt mass flow rate (MFR) can be measured using, for example, "Semi-auto Melt Indexer 2A" manufactured by Toyo Seiki Seisakusho Co., Ltd.
  • the measurement conditions can be as follows.
  • the content of the polyethylene resin in the resin composition is preferably 80% by mass or more, more preferably 83% by mass or more, further preferably 85% by mass or more, and 88% by mass or more. It is particularly preferable that it is present, and it is particularly preferable that it is 90% by mass or more.
  • the content of the polyethylene resin means the total amount.
  • Examples of the additive contained in the resin composition together with the polyethylene resin include a polymer-type antistatic agent, a low-molecular-weight antistatic agent (surfactant), a lubricant, a weather-resistant stabilizer, and a light stabilizer. , Antistatic agents, antibacterial agents, deodorants, pigments, inorganic fillers and the like.
  • the additive in the present embodiment has, for example, a total content of 1% by mass or more and 20% by mass or less in the resin composition.
  • the total content of the additives in the resin composition is preferably 17% by mass or less, more preferably 15% by mass or less, and further preferably 12% by mass or less.
  • the resin foam sheet 1 of the present embodiment composed of the resin composition is used as the interleaving paper of the glass plate 2 as described above. Since the interleaving paper is used so as to be peeled off from the surface of the glass plate 2 after being brought into surface contact with the glass plate 2, it is preferable that the interleaving paper is imparted with antistatic properties. Therefore, it is preferable that the resin composition constituting the contact surface of the resin foam sheet 1 contains a polymer-type antistatic agent or a surfactant as the additive.
  • the resin composition of the present embodiment may contain a fatty acid compound. The fatty acid compound may be contained in the resin composition as the additive or as an unavoidable impurity (mixed foreign substance).
  • polymer type antistatic agent examples include polyethylene oxide, polypropylene oxide, polyethylene glycol, polyesteramide, polyether esteramide, ionomers such as ethylene-methacrylic acid copolymer, and polyethylene glycol methacrylate-based copolymers.
  • polymer type antistatic agent examples include polyethylene oxide, polypropylene oxide, polyethylene glycol, polyesteramide, polyether esteramide, ionomers such as ethylene-methacrylic acid copolymer, and polyethylene glycol methacrylate-based copolymers.
  • examples thereof include quaternary ammonium salts and copolymers of olefin-based blocks and hydrophilic blocks.
  • the polymer-type antistatic agent a copolymer of an olefin-based block and a hydrophilic block is preferable.
  • the olefin-based block may be composed of, for example, a polyolefin having one or two or more alkenes among the alkenes having 2 to 8 carbon atoms as a constituent unit.
  • the hydrophilic block may be composed of, for example, a polyoxyalkylene having an alkylene oxide having 2 to 8 carbon atoms such as ethylene oxide, propylene oxide, and butylene oxide as a constituent unit.
  • the polymer-type antistatic agent in the present embodiment has, for example, a total content of 0.5% by mass or more and 10% by mass or less in the resin composition.
  • the total content of the polymer-type antistatic agent is preferably 1% by mass or more, and more preferably 2% by mass or more.
  • the total content of the polymer-type antistatic agent is preferably 8% by mass or less, and more preferably 6% by mass or less.
  • surfactant examples include nonionic surfactants, anionic surfactants, cationic surfactants, amphoteric surfactants and the like.
  • nonionic surfactant examples include ester-type surfactants in which polyhydric alcohols such as glycerin and saccharides are ester-bonded with fatty acids; ether-type surfactants such as polyoxyethylene alkyl ethers and polyoxyethylene alkyl phenyl ethers.
  • An ester-ether-type surfactant in which an alkylene oxide is added to a fatty acid or a polyhydric alcohol fatty acid ester; an amide-type surfactant such as a fatty acid alkanolamide in which a hydrophobic group and a hydrophilic group are bonded via an amide bond, etc. Can be mentioned.
  • anionic surfactant examples include an alkyl sulfonate, a dialkyl sulfosuccinate, an alpha olefin sulfonate, a linear alkyl benzene sulfonate, a naphthalene sulfonate-formaldehyde condensate, an alkyl naphthalene sulfonate, and N.
  • Sulfonate-type surfactants such as -methyl-N-acyltaurine salt; carboxylic acids such as aliphatic monocarboxylates, polyoxyethylene alkyl ether carboxylates, N-acylsarcosates, and N-acylglutamates.
  • Salt-type surfactants Sulfate-type surfactants such as alkyl sulfates, polyoxyethylene alkyl ether sulfates, oil and fat sulfates; alkyl phosphates, polyoxyethylene alkyl ether phosphates, polyoxyethylene Examples thereof include phosphate ester salt-type surfactants such as alkylphenyl ether phosphates.
  • the metal constituting the salt include alkali metals such as sodium, potassium and lithium, and alkaline earth metals such as calcium and magnesium.
  • cationic surfactant examples include quaternary ammonium salt-type surfactants such as alkylammonium salts and alkylbenzylammonium salts; amine salt-type surfactants such as N-methylbishydroxyethylamine fatty acid ester and hydrochloride. Can be mentioned.
  • amphoteric surfactant examples include betaine-type surfactants such as alkylbetaine; amino acid-type surfactants such as alkylamino fatty acid salts; and amine oxide-type surfactants such as alkylamine oxides.
  • the total content of the surfactant in the present embodiment is, for example, 0.5% by mass or more and 10% by mass or less in the resin composition.
  • the total content of the surfactant is preferably 1% by mass or more, more preferably 2% by mass or more.
  • the total content of the surfactant is preferably 8% by mass or less, more preferably 6% by mass or less.
  • the resin composition of the present embodiment preferably contains an anionic surfactant or a nonionic surfactant among the surfactants.
  • the resin composition of the present embodiment preferably contains an anionic surfactant.
  • the surfactant contained in the resin composition preferably has 50% by mass or more of an anionic surfactant, more preferably 75% by mass or more of an anionic surfactant, and 90% by mass. It is more preferable that the mass% or more is an anionic surfactant.
  • the surfactant contained in the resin composition may be substantially only an anionic surfactant.
  • the fatty acid compound in the present embodiment can be contained in the resin composition as a lubricant or the antistatic agent.
  • the fatty acid compound include fatty acids, fatty acid metal salts, fatty acid amides, and fatty acid esters.
  • the fatty acid include saturated fatty acids such as lauric acid, palmitic acid, stearic acid and behenic acid, unsaturated fatty acids such as oleic acid, erucic acid, linoleic acid and linolenic acid, and other monocarboxylic acids. , Dicarboxylic acid such as dimer acid and the like.
  • the metal constituting the fatty acid metal salt include calcium, magnesium, aluminum, zinc and the like.
  • Fatty acid amide is an acid amide derived from fatty acid.
  • Examples of the fatty acid amide include those derived from aliphatic amines.
  • fatty acid amide examples include stearate amide, palmitate amide, oleic acid amide, erucic acid amide, methylene bisstearic acid amide, ethylene bisstearic acid amide, ethylene bisoleic acid amide, and ethylene bishydroxystearic acid amide. Can be mentioned.
  • fatty acid ester examples include butyl stearate, stearic acid monoglyceride, oleic acid monoglyceride, behenic acid monoglyceride, linoleic acid monoglyceride, ricinoleic acid monoglyceride, hydroxystearic acid triglyceride, sorbitan fatty acid ester, and polyoxyethylene (5) glycerin monosteer.
  • the total content of the fatty acid compounds in the resin composition constituting the resin foam sheet of the present embodiment is preferably 10,000 ppm or less, more preferably 1000 ppm or less, still more preferably 100 ppm or less, and 10 ppm or less. Is particularly preferable.
  • the total content of the fatty acid compound may be 7 ppm or less, or may be 5 ppm or less.
  • the total content of the fatty acid compounds in the resin composition constituting the resin foam sheet of the present embodiment may be 1 ppm or more, or may be 3 ppm or more. If necessary, the total content of the fatty acid compounds may be 5 ppm or more, 10 ppm or more, or 100 ppm or more.
  • a known method can be used as a method for measuring the content of the fatty acid compound in the resin foam sheet. Examples of the method include the following methods.
  • the fatty acid metal salt is measured as follows, for example.
  • the resin foam sheet is immersed in boiling methanol for extraction, allowed to cool, and the precipitated precipitate is filtered off.
  • the precipitate is suspended in dilute hydrochloric acid and solvent-extracted with ether, the fatty acid liberated in the ether phase and the metal in the aqueous phase are extracted respectively.
  • the metal species can be identified and quantified by a luminescence analyzer or the like.
  • the fatty acid, the fatty acid amide, and the fatty acid ester can be quantified using a liquid chromatography-tandem mass spectrometer (LC-MS / MS) (for example, "ACCELA” manufactured by Thermo SCIENTIFIC).
  • LC-MS / MS liquid chromatography-tandem mass spectrometer
  • the calibration lines used for quantification of fatty acid compounds are five types of standards with different concentrations prepared by diluting a reference solution (methanol solution) with a concentration of 1000 ppm of the fatty acid compound (fatty acid, fatty acid amide, fatty acid ester) to be quantified with methanol.
  • a reference solution methanol solution
  • 1000 ppm of the fatty acid compound fatty acid, fatty acid amide, fatty acid ester
  • the extracted sample is precisely weighed, and the extracted sample is placed in a pressure-resistant container made of PTFE (polytetrafluoroethylene) together with 10 ml of methanol, and the pressure-resistant container is sealed.
  • PTFE polytetrafluoroethylene
  • the filtrate obtained by the above filtration is used as a measurement sample by LC-MS / MS.
  • -The content (ppm) of the fatty acid compound in the resin foamed sheet is obtained from the amount of the fatty acid compound contained in the filtrate.
  • the resin composition as described above is melt-kneaded together with a foaming agent or the like in an extruder, and the melt-kneaded product obtained by the melt-kneading is mounted on the tip end side of the extruder in the extrusion direction. It can be produced by extruding into a sheet from the die and foaming.
  • the width and thickness of the resin foamed sheet 1 are not particularly limited, but the thickness is preferably 0.2 mm or more.
  • the thickness of the resin foam sheet 1 is more preferably 0.5 mm or more.
  • the thickness of the resin foam sheet 1 is preferably 2.0 mm or less, more preferably 1.5 mm or less.
  • the resin foam sheet produced by the extrusion foaming method is usually hot and flexible immediately after extrusion.
  • the resin foam sheet produced by the extrusion foaming method is usually rapidly cooled immediately after being extruded from the extruder for the purpose of preventing unintended deformation.
  • the resin foam sheet 1 of the present embodiment is produced by such a method, the polyethylene resin is hardened in a state where it is not sufficiently crystallized.
  • the polyethylene resin contained in the resin foam sheet 1 is sufficiently crystallized in order to reduce the possibility that deposits are generated on the mating material.
  • the proportion of polyethylene resin crystals contained in the resin foamed sheet 1 can be confirmed by performing the above-mentioned DSC measurement using the resin foamed sheet 1 as a sample.
  • the mass ratio of the polyethylene resin crystals contained in the resin foam sheet 1 is referred to as "apparent crystallinity".
  • the apparent crystallinity of the resin foamed sheet 1 can be obtained as follows. That is, the apparent crystallinity can be measured using a sample collected from the resin foam sheet. The location where the sample is collected from the resin foam sheet can be a randomly selected location.
  • the sampling method and temperature conditions can be as follows. Fill the bottom of the aluminum measuring container with 5.5 ⁇ 0.5 mg of the sample so that there is no gap, and then cover with the aluminum lid. Next, a differential scanning calorimetry is performed using a "DSC7000X, AS-3" differential scanning calorimeter manufactured by Hitachi High-Tech Science Corporation. Under a nitrogen gas flow rate of 20 mL / min, the sample is heated and cooled in the following steps to obtain a DSC curve.
  • Step 1 Hold for 10 minutes after lowering the temperature from 30 ° C to -40 ° C.
  • Step 2 Raise the temperature from -40 ° C to 220 ° C (first temperature rise) and hold for 10 minutes. The temperature is raised and lowered at a speed of 10 ° C./min. Alumina is used as the reference material.
  • the amount of heat of melting J / g is obtained from the area of the melting peak seen in the cooling process (step 2).
  • the apparent crystallinity is obtained by dividing this heat of fusion by the theoretical heat of fusion of polyethylene 285.7 J / g.
  • the apparent crystallinity of the resin foamed sheet 1 in the present embodiment has the same value as the crystallinity of the polyethylene resin contained in the resin foamed sheet 1.
  • the apparent crystallinity of the resin foam sheet 1 is preferably 44% or more, more preferably 45% or more.
  • the apparent crystallinity of the resin foam sheet 1 is more preferably more than 45%.
  • the apparent crystallinity of the resin foam sheet 1 is preferably 58% or less, and more preferably 51% or less.
  • the apparent crystallinity of the resin foam sheet 1 is more preferably 47% or less.
  • the apparent crystallinity (C1 (%)) of the resin foam sheet 1 is usually lower than the crystallinity (C2 (%)) of the polyethylene resin. That is, the ratio (C1 / C2) of the apparent crystallinity (C1) of the resin foamed sheet 1 to the crystallinity (C2) of the polyethylene resin is usually 1.0 or less.
  • the ratio (C1 / C2) is preferably 0.8 or more. The ratio may be 0.9 or more.
  • the resin foam sheet 1 In order to make the apparent crystallinity of the resin foam sheet 1 close to the crystallinity of the polyethylene resin, it is sufficient to prevent the resin foam sheet 1 extruded from the extruder from having a sudden temperature drop. As a method of preventing the temperature of the resin foamed sheet 1 from dropping sharply, a method of slowing the moving speed of the extruded resin foamed sheet 1 and blowing warm air onto the resin foamed sheet 1 in the process of moving can be considered. Further, in order to make the apparent crystallization degree of the resin foam sheet 1 close to the crystallinity of the polyethylene resin, the resin composition which is the forming material of the resin foam sheet 1 contains a crystallization nucleating agent and a crystallization accelerator. You may do it.
  • the thickness of the resin foam sheet 1 is calculated by measuring the thickness with a thickness gauge (for example, "Dial Thickness Gauge SM-112" manufactured by Teclock Co., Ltd.) at a plurality of randomly selected locations (for example, 20 locations). It can be obtained by calculating the average value.
  • a thickness gauge for example, "Dial Thickness Gauge SM-112" manufactured by Teclock Co., Ltd.
  • the foam layer 10 in the present embodiment preferably has an apparent density of 10 kg / m 3 or more.
  • the apparent density is more preferably 15 kg / m 3 or more.
  • the apparent density of the foam layer 10 is preferably 200 kg / m 3 or less.
  • the apparent density is more preferably 150 kg / m 3 or less, and further preferably 100 kg / m 3 or less.
  • the apparent density of the foam layer 10 can be determined as follows. [Measurement method of apparent density] The apparent density of the foam layer 10 can be measured by the method described in JIS K7222: 2005 "Foam plastics and rubber-How to determine the apparent density". Specifically, a test piece having an apparent volume of 100 cm 3 or more is prepared, and its mass is measured. When cutting out the test piece from the resin foam sheet, do not change the original cell structure as much as possible. If a test piece of 100 cm 3 or more cannot be prepared, prepare a test piece having as large a volume as possible. Then, the apparent density is calculated by the following equation.
  • Apparent density (kg / m 3 ) test piece mass (g) / test piece volume (mm 3 ) x 10 6
  • the test piece is collected after 72 hours or more have passed after the resin foam sheet is prepared, and left for 16 hours or more under atmospheric conditions of a temperature of 23 ⁇ 2 ° C. and a relative humidity of 50 ⁇ 10% to adjust the state. After that, the mass and volume are measured under the same conditions.
  • the resin foamed sheet 1 of the present embodiment is an extruded foamed sheet having a single-layer structure of only the foamed layer 10, so that the surface of the foamed layer 10 is attached to the mating material with which the resin foamed sheet 1 abuts. Will be brought into contact with each other.
  • the surface layer portion of the foamed layer 10 has a larger amount of resin than the central portion in the thickness direction.
  • the resin foam sheet 1 is a sheet including a surface layer portion when the foam layer 10 is divided into three in the thickness direction and divided into a sheet in the center portion in the thickness direction and two sheets including the surface layer portion.
  • the apparent density of the sheet is preferably 1.1 times or more, more preferably 1.2 times or more the apparent density of the sheet in the central portion.
  • the apparent density of the sheet including the surface layer portion may be 1.3 times or more or 1.5 times or more the apparent density of the sheet in the central portion.
  • the apparent density of the sheet including the surface layer portion is preferably 3 times or less the apparent density of the sheet in the central portion.
  • the resin foam sheet 1 having a single layer structure of only the foam layer 10 is exemplified, but the resin foam sheet 1 of the present embodiment may have a multi-layer structure.
  • the resin foamed sheet 1 having a multilayer structure may be an extruded foamed sheet having a non-foamed layer 20 on one side of the foamed layer 10.
  • the resin foamed sheet 1 having a multilayer structure may be an extruded foamed sheet having a non-foamed layer 20 on both sides of the foamed layer 10.
  • the resin foam sheet 1 of the present embodiment does not necessarily have to be an extruded foam sheet.
  • the non-foamed layer 20 in the resin foamed sheet 1 having a multilayer structure can usually have a thickness of 5 ⁇ m or more and 500 ⁇ m or less.
  • the non-foamed layer 20 can be formed of the same resin composition as the resin composition described for the foamed layer 10 in FIG.
  • the resin foamed sheet 1 of the present embodiment is foamed as shown in FIG. 4 because the surface in contact with the mating material is composed of the resin composition, which effectively suppresses the migration of the fatty acid compound.
  • the material for forming the foamed layer 10 is not particularly limited.
  • the non-foamed layer 20 is provided only on one side of the foamed layer 10, and the other side of the foamed layer 10 is in contact with the mating material. Therefore, it is preferable to form each of the foamed layer 10 and the non-foamed layer 20 with the resin composition as described above.
  • the same resin composition is used for the resin composition constituting the non-foamed layer 20 on the one side and the resin composition constituting the non-foamed layer 20 on the other side.
  • Different resin compositions may be used.
  • the resin foamed sheet 1 as shown in FIG. 3 even if the same resin composition is used for the resin composition constituting the foamed layer 10 and the resin composition constituting the non-foamed layer 20, different resin compositions are used. May be used.
  • the resin foam sheet 1 of the present embodiment includes at least one foam layer and has a single-layer structure of only the foam layer or a multi-layer structure in which the foam layer and another layer are laminated, and at least one of them.
  • the surface is composed of a resin composition containing a polyethylene resin, and the polyethylene resin contained in the resin composition has a density of 928 kg / m 3 or more and 933 kg / m 3 or less and crystallization of 44% or more and 58% or less. Even if the resin composition unintentionally contains a fatty acid compound or the like due to the degree of possession, the resin composition is suppressed from being transferred to the mating material in contact with the resin foamed sheet 1. be able to.
  • the resin foam sheet 1 of the present embodiment is preferably used as an interleaving paper because it has the above-mentioned functions, the use of the resin foamed sheet 1 is not limited to the interleaving paper, and is used for various purposes. It is available. That is, the resin foam sheet of the present invention is not limited to the above examples.
  • AS1 Polymer type antistatic agent
  • AS1 A polymer-type antistatic agent comprising a polyolefin block composed of a polyolefin and a hydrophilic block composed of a polyoxyalkylene.
  • SA1 Sodium alkylsulfonate
  • FA1 fatty acid compound
  • FA1 Stearate amide
  • NA1 bubble adjusting agent
  • Example 1 Manufacturing of resin foam sheet
  • Example a An admixture was prepared by blending each of the polyethylene resin "PE1", the polymer type antistatic agent “AS1”, the surfactant "SA1", and the bubble adjusting agent "NA1" in the ratios shown in Table 1.
  • the outlet diameter is 100 mm (slit width 0) at the tip of a tandem extruder (the tip of the second extruder) in which two extruders are connected in the order of the first extruder and the second extruder in the extrusion direction.
  • a circular die of .2 mm was attached.
  • the molar ratio) was press-fitted and further melt-kneaded.
  • the press-fitting amount of the mixed butane was adjusted so that the ratio to 100 parts by mass of the polyethylene resin was 18 parts by mass.
  • the melt-kneaded product was cooled to a temperature range (111 ° C.) suitable for foaming by a second extruder connected to the first extruder. Then, this melt-kneaded product was extruded into the atmosphere from the circular die into a cylindrical shape and foamed. The resin temperature at that time was 116 ° C.
  • the extruded tubular foam was cooled by blowing air, and then cooled by adding it on a cooling mandrel having a diameter of 380 mm and a length of 500 mm.
  • Example 2 A resin foam sheet having a single foam layer was produced in the same manner as in Example 1 except that the materials used were changed to those shown in Table 1 below.
  • Example 5 Using the same resin composition as in Example 1, a resin foam sheet having a three-layer structure having non-foamed layers on both sides of the foamed layer was produced. Specifically, a resin foam sheet was produced as follows. The raw material for forming the foam layer was supplied to one of the two extruders connected to the merging die, and the raw material for forming the non-foam layer was supplied to the other extruder. These two raw materials were co-extruded from one die to prepare a resin foam sheet having a three-layer structure of a non-foamed layer / foamed layer / non-foamed layer.
  • Example 1 the amount of mixed butane used was 18 parts by mass, but when the foam layer of Example 5 was formed, the amount of mixed butane used was changed to 6 parts by mass.
  • the fatty acid compound (FA1) was added only to the non-foaming layer in Production Example b of Example 5.
  • a fatty acid compound and a surfactant were transferred from the resin foam sheet obtained by the above production method to glass by the procedure shown below to prepare a glass for evaluation of the transfer amount.
  • Two 60 mm ⁇ 80 mm test sheets were cut out from randomly selected positions of the resin foam sheets obtained by the production methods of Examples and Comparative Examples.
  • a glass plate having a size of 50 mm ⁇ 75 mm was prepared, and the glass plates were sandwiched from above and below by two test sheets cut out from a resin foam sheet to form a laminate as shown in FIG.
  • the laminate L was prepared so that both the upper surface and the lower surface of the glass plate G were all covered with the test sheet S.
  • This laminate L was placed in a high-temperature and high-humidity tank manufactured by ISUZU and held at 50 ° C.-90% RH for 240 hours to transfer the stearic acid amide and the surfactant contained in the test sheet to a glass plate. rice field.
  • an iron weight W having a weight of 2 kg, a width of 50 mm, a length of 100 mm, and a height of 50 mm was placed on the laminated body L.
  • the weight W was placed on the laminated body L so that the length direction was the longitudinal direction of the glass plate G so that a load was applied to the entire surface of the glass plate G.
  • the glass plate G after 240 hours was used as the transfer amount evaluation glass.
  • the transfer amount of the fatty acid and the surfactant was measured using the transfer amount evaluation glass obtained by the above method. The measurement was performed by the LC / MS / MS method shown below.
  • the amount of the fatty acid compound (stearic acid amide) transferred to the transfer amount evaluation glass and the amount of the surfactant (sodium alkylsulfonate) transferred are the stearic acid amide and the sodium alkylsulfonate attached to the transfer amount evaluation glass.
  • the amount of the fatty acid compound (stearic acid amide) transferred to the transfer amount evaluation glass and the amount of the surfactant (sodium alkylsulfonate) transferred are the stearic acid amide and the sodium alkylsulfonate attached to the transfer amount evaluation glass.
  • a liquid chromatograph linear ion trap type mass spectrometer (LC / MSn device) was used for the measurement.
  • An intermediate standard solution (methanol solution) of about 1000 ppm of stearate amide was prepared, and then diluted stepwise with methanol to prepare standard solutions for preparing a calibration curve of 5 ppm, 2 ppm, 1 ppm, 0.5 ppm, and 0.2 ppm.
  • An approximate curve (quadratic curve) was obtained by plotting each concentration and area value by the least squares method, and this was used as a calibration curve for quantification.
  • the LC measurement conditions are as follows.
  • the method for creating a calibration curve is as follows. After preparing an intermediate standard solution (methanol solution) of about 1000 ppm of sodium alkylsulfonate, it was further diluted stepwise with methanol to prepare standard solutions for preparing calibration curves of 5 ppm, 2 ppm, 1 ppm, 0.5 ppm, and 0.2 ppm. ..
  • An approximate curve (quadratic curve) was obtained by plotting each concentration and area value by the least squares method, and this was used as a calibration curve for quantification.
  • the LC measurement conditions are as follows.
  • the crystallinity of the polyethylene resin used in each Example and Comparative Example was measured using a "DSC7000X, AS-3" differential scanning calorimeter manufactured by Hitachi High-Tech Science. In addition, the crystallinity was measured using a resin foam sheet as a sample. The specific measurement method is as described above. The results of these evaluations are also shown in Tables 1 and 2.
  • Resin foam sheet 2 Glass plate 10: Foam layer, 20: Non-foam layer

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Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014136755A (ja) * 2013-01-17 2014-07-28 Sekisui Plastics Co Ltd ポリエチレン系樹脂発泡シート
JP2019126970A (ja) * 2018-01-25 2019-08-01 積水化成品工業株式会社 シート材及びシート材の製造方法

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
ANONYMOUS: "Polyethylene Division Sunfine Sales Department Web Page "Sunfine Technical Data: PE004 Basic Knowledge of Polyethylene (4)", BASIC KNOWLEDGE OF POLYETHYLENE (4). ASAHI KASEI CORPORATION, 5 July 2016 (2016-07-05), pages 1 - 2, XP009536039 *
NITTA, ISAMU; TADOKORO, HIROYUKI: "Crystallinity of Polymer Substances. II", POLYMER, vol. 5, no. 7, 20 June 1956 (1956-06-20), JP , pages 345 - 352, XP009535363, ISSN: 0454-1138, DOI: 10.1295/kobunshi.5.7_345 *

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