WO2021251101A1 - Article moulé par extrusion pour récipient de tube et récipient de tube - Google Patents

Article moulé par extrusion pour récipient de tube et récipient de tube Download PDF

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Publication number
WO2021251101A1
WO2021251101A1 PCT/JP2021/019229 JP2021019229W WO2021251101A1 WO 2021251101 A1 WO2021251101 A1 WO 2021251101A1 JP 2021019229 W JP2021019229 W JP 2021019229W WO 2021251101 A1 WO2021251101 A1 WO 2021251101A1
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Prior art keywords
polyethylene resin
derived
tube
modified
resin
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PCT/JP2021/019229
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English (en)
Japanese (ja)
Inventor
亜莉沙 巻
隼 柴田
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大和製罐株式会社
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Priority to CN202180035104.4A priority Critical patent/CN115551787A/zh
Publication of WO2021251101A1 publication Critical patent/WO2021251101A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D35/00—Pliable tubular containers adapted to be permanently or temporarily deformed to expel contents, e.g. collapsible tubes for toothpaste or other plastic or semi-liquid material; Holders therefor
    • B65D35/02—Body construction
    • B65D35/10—Body construction made by uniting or interconnecting two or more components

Definitions

  • Laminated tubes are known as tube containers for storing toothpaste, cosmetics, etc.
  • the laminated tube is manufactured using a laminated sheet in which polyethylene resin, special paper, aluminum foil, etc. are laminated by laminating processing as a raw material.
  • a laminated tube is manufactured by rolling a laminated sheet into a cylindrical shape, overlapping both ends of the sheet, welding the overlapped portions, and joining a cap fitting portion to the obtained container body.
  • the laminated tube has the following problems, for example. Since the laminated tube is manufactured by overlapping both ends, a step is generated in the overlapped portion, which causes a problem in appearance. Since the end face of the laminated sheet is exposed in the overlapped portion, the contained contents permeate into the inside of the laminate from the end face, and the physical characteristics of the laminated sheet are deteriorated. Further, since the laminated tube includes a step of rolling it into a cylindrical shape and it is desired to make the above-mentioned step inconspicuous, it is difficult to thicken the laminated tube, and it is difficult to maintain sufficient strength with a tube having a large diameter.
  • Patent Documents 1 and 2 A tube container manufactured by extrusion molding is called an extrusion molding tube.
  • the extruded tube is manufactured by continuously extruding the molten resin into a tube shape with an extruder, cutting it to an appropriate length, and joining the cap fitting portion to the obtained container body.
  • a multi-layer extruded tube it is manufactured by extruding a plurality of types of molten resins into one mold with separate extruders to form a multi-layered tube shape in the mold.
  • the present inventors have worked on developing an extruded tube containing a plant-derived polyethylene resin from the viewpoint of the above-mentioned problems of laminated tubes and environmental protection, and have newly found the following problems.
  • an object of the present invention is to provide a technique for an extruded tube containing a plant-derived polyethylene resin and having excellent stress crack resistance, interlayer adhesion strength, and manufacturing stability.
  • the present invention has a tube shape as a whole, has a three-layer structure of an inner layer, an outer layer, and an intermediate layer interposed between them, and each of the inner layer and the outer layer is derived from petroleum.
  • An extruded article for a tube container is provided, which comprises an acid-modified polyethylene resin of the above and a linear low-density polyethylene resin derived from a plant.
  • a container body containing the above-mentioned extruded product having one end heat-sealed Provided is a tube container comprising a cap fitting portion joined to the other end of the extruded product, one end of which is heat-sealed.
  • an extruded tube containing a plant-derived polyethylene resin and having excellent stress crack resistance, interlayer adhesion strength, and manufacturing stability.
  • Extruded product for tube container The extruded product for tube container has a tube shape as a whole, has a three-layer structure of an inner layer, an outer layer, and an intermediate layer interposed between them, and each of the inner layer and the outer layer. Includes petroleum-derived acid-modified polyethylene resins and plant-derived linear low-density polyethylene resins. In the following description, the extruded product for tube containers is simply referred to as "extruded product”.
  • FIG. 1 is a cross-sectional view showing a three-layer structure of an extruded product according to an embodiment of the present invention.
  • the extruded product 1 has a three-layer structure of an inner layer 1a, an outer layer 1c, and an intermediate layer 1b interposed between them.
  • the surface on the inner layer 1a side is adjacent to the inner space of the tube container, and the surface on the outer layer 1c side is adjacent to the outer space of the tube container. do.
  • the extruded product 1 may have a cylindrical shape or an elliptical tubular shape.
  • the extruded product 1 has a circumference of, for example, 30 to 190 mm.
  • the extruded product 1 preferably has a size of 40 to 160 mm.
  • the peripheral length refers to the length of the outer circumference of the tubular extruded product 1.
  • the extruded product 1 has a thickness of, for example, 0.19 to 0.55 mm, preferably 0.24 to 0.5 mm.
  • the thickness refers to the thickness of the wall of the tubular extruded product 1, and is an average value of the thickness measured at three points set at substantially equal intervals along the longitudinal direction of the extruded product 1.
  • the inner layer 1a has a thickness of, for example, 0.12 to 0.25 mm, preferably 0.14 to 0.24 mm
  • the intermediate layer 1b has a thickness of, for example, 0.01 to 0.1 mm, preferably 0.02 to 0.
  • the outer layer 1c has a thickness of 08 mm
  • the outer layer 1c has a thickness of, for example, 0.06 to 0.2 mm, preferably 0.08 to 0.18 mm.
  • the extruded product 1 can have an arbitrary length, may have a length longer than the container body of the tube container, or may have the same length as the container body of the tube container. .. In the former case, the extruded product 1 is cut to the length of the container body of the tube container and then used as the container body of the tube container.
  • the inner layer 1a contains "petroleum-derived acid-modified polyethylene resin" and "plant-derived linear low-density polyethylene resin”.
  • the "petroleum-derived acid-modified polyethylene resin” is a resin obtained by modifying petroleum-derived polyethylene with an unsaturated carboxylic acid or an anhydride thereof. Such a resin is known as an adhesive resin because it is imparted with adhesiveness by acid modification.
  • unsaturated carboxylic acids or anhydrides thereof are acrylic acid, methacrylic acid, ⁇ -ethylacrylic acid, maleic acid, fumaric acid, itaconic acid, citraconic acid, tetrahydrophthalic acid, chloromaleic acid, butenyl succinic acid, and these. Anhydrous of.
  • the "petroleum-derived acid-modified polyethylene resin” is preferably a petroleum-derived maleic anhydride-modified polyethylene resin. More preferably, the "petroleum-derived acid-modified polyethylene resin” includes petroleum-derived anhydrous maleic acid-modified low-density polyethylene resin (MA-modified LDPE) and petroleum-derived anhydrous maleic acid-modified linear low-density polyethylene resin (MA-modified L). -LDPE), or a mixture thereof.
  • MA-modified LDPE petroleum-derived anhydrous maleic acid-modified low-density polyethylene resin
  • MA-modified L MA-modified L
  • -LDPE petroleum-derived anhydrous maleic acid-modified linear low-density polyethylene resin
  • Polyethylene resin (MA-modified LDPE) is a resin obtained by modifying an ethylene homopolymer produced using petroleum as a raw material with maleic anhydride.
  • the density of "petroleum maleic anhydride modified low density polyethylene resin (MA-modified LDPE)" is preferably within a range of 0.91g / cm 3 ⁇ 0.93g / cm 3, 0.915g / cm 3 It is more preferably in the range of ⁇ 0.93 g / cm 3.
  • the density of the resin described in the present specification is a measured value obtained by a method according to JIS K7112: 1999.
  • the melt flow rate (MFR) of the "petroleum-derived maleic anhydride-modified low-density polyethylene resin (MA-modified LDPE)" is preferably in the range of 0.1 g / 10 minutes to 10 g / 10 minutes, and is preferably 1 g. It is more preferably in the range of / 10 minutes to 5 g / 10 minutes.
  • the melt flow rate (MFR) of the resin described in the present specification is a measured value obtained by a method based on JIS K7210: 1999. Specifically, the melt flow rate is a measured value of the weight of the resin discharged in 10 minutes when a load of 21.18 N (2.16 kgf) is applied to the resin at 190 ° C.
  • Polyethylene resin (MA-modified LDPE)
  • MA-modified LDPE low-density polyethylene resin
  • Modic registered trademark
  • Resins and the like sold under the trade name of "Admer” (registered trademark) can be used.
  • Polyethylene-derived anhydrous maleic acid-modified linear low-density polyethylene resin is a copolymer of ethylene and ⁇ -olefin produced using petroleum as a raw material, and is made of maleic anhydride. It is a resin obtained by modification.
  • An " ⁇ -olefin” is at least one compound selected from the group consisting of ⁇ -olefins having 3 to 20 carbon atoms, such as 1-butene, 1-hexene, 4-methyl-1-pentene, etc. 1-Octene and the like.
  • the density of "Petroleum maleic anhydride modified from linear low density polyethylene resin (MA-modified L-LDPE)” is preferably within a range of 0.91g / cm 3 ⁇ 0.93g / cm 3, 0 More preferably, it is in the range of 915 g / cm 3 to 0.93 g / cm 3.
  • the melt flow rate (MFR) of "petroleum-derived maleic anhydride-modified linear low-density polyethylene resin (MA-modified L-LDPE)" is in the range of 0.1 g / 10 minutes to 10 g / 10 minutes. It is preferably in the range of 1 g / 10 minutes to 5 g / 10 minutes, and more preferably.
  • Polyethylene resin (MA-modified L-LDPE)
  • MA-modified L-LDPE linear low-density polyethylene resin
  • Admer registered trademark
  • Mitsubishi Resins sold under the trade name of "Modic” (registered trademark) from Chemical Co., Ltd.
  • resins sold under the trade name of "OREVAC” (registered trademark) from ARKEMA, and the like can be used.
  • Plant-derived linear low-density polyethylene resin "Plant-derived linear low-density polyethylene resin (Bio-L-LDPE)” is a copolymer of ethylene and ⁇ -olefin produced using a plant as a raw material.
  • the "plant-derived linear low-density polyethylene resin (Bio-L-LDPE)” is preferably a linear low-density polyethylene resin derived from sugar cane.
  • the linear low-density polyethylene resin derived from sugar cane is a copolymer of ethylene and ⁇ -olefin produced by using sugar cane as a raw material.
  • ⁇ -olefin is at least one compound selected from the group consisting of ⁇ -olefins having 3 to 20 carbon atoms, such as 1-butene, 1-hexene, 4-methyl-1-pentene, etc. 1-Octene and the like.
  • the density of "plant-derived linear low density polyethylene resin (Bio L-LDPE)” is preferably within a range of 0.91g / cm 3 ⁇ 0.93g / cm 3, 0.915g / cm 3 It is more preferably in the range of ⁇ 0.93 g / cm 3.
  • the melt flow rate (MFR) of the "plant-derived linear low-density polyethylene resin (Bio-L-LDPE)" is preferably in the range of 0.1 g / 10 minutes to 10 g / 10 minutes, and is preferably 1 g. It is more preferably in the range of / 10 minutes to 5 g / 10 minutes.
  • Plant-derived linear low-density polyethylene resin (Bio-L-LDPE)
  • a plant-derived linear low-density polyethylene sold by Braskem can be used, for example, SLL118. , SLL118 / 21, SLL218, SLL218 / 21, SLL318, SLH118, SLH218, SLH0820 / 30AF, and the like.
  • the inner layer 1a can contain "petroleum-derived acid-modified polyethylene resin” and "plant-derived linear low-density polyethylene resin” in a mass ratio of, for example, 9: 1 to 4: 6.
  • the inner layer 1a can contain "petroleum-derived acid-modified polyethylene resin” and "plant-derived linear low-density polyethylene resin” in a mass ratio of preferably 9: 1 to 5: 5.
  • the intermediate layer 1b preferably contains a resin having a gas barrier property.
  • a resin known as a resin having a gas barrier property can be used as the resin constituting the intermediate layer 1b.
  • the resin constituting the intermediate layer 1b is, for example, ethylene-vinyl alcohol copolymer resin (EVOH), nylon (NY), polyvinyl alcohol (PVA), polyacrylonitrile (PAN), polyvinylidene chloride (PVDC), and is preferable. Is an ethylene-vinyl alcohol copolymer resin (EVOH).
  • Ethylene-vinyl alcohol copolymer resin is, for example, a resin sold by Mitsubishi Chemical Co., Ltd. under the trade name of "Soanol” (registered trademark), and a product of "EVAL” (registered trademark) by Kuraray Co., Ltd. Resins sold under the name can be used.
  • the outer layer 1c contains "petroleum-derived acid-modified polyethylene resin" and "plant-derived linear low-density polyethylene resin".
  • the "petroleum-derived acid-modified polyethylene resin” contained in the outer layer 1c is as described in the inner layer 1a.
  • the "plant-derived linear low-density polyethylene resin" contained in the outer layer 1c is as described in the inner layer 1a.
  • the outer layer 1c can contain "petroleum-derived acid-modified polyethylene resin” and "plant-derived linear low-density polyethylene resin” in a mass ratio of, for example, 9: 1 to 4: 6.
  • the outer layer 1c can contain "petroleum-derived acid-modified polyethylene resin” and "plant-derived linear low-density polyethylene resin” in a mass ratio of preferably 9: 1 to 5: 5.
  • the outer layer 1c may have the same resin composition as the inner layer 1a, or may have a different resin composition from the inner layer 1a.
  • the inner layer 1a, the intermediate layer 1b, and the outer layer 1c are mainly composed of a resin, but may contain known additives in addition to the resin, if necessary.
  • various additives known as resin additives can be used.
  • Additives include, for example, antioxidants, UV absorbers, weathering agents, antistatic agents, fillers, crystal nucleating agents, coloring pigments, matting agents, anticoloring agents, antifogging agents, flame retardants, antiblocking agents. , And lubricants (including slip agents and mold release agents) and the like.
  • the total content of the additive may be, for example, 0.01 to 10 parts by mass with respect to 100 parts by mass of the resin of each layer.
  • the extrusion molded product 1 can be manufactured according to a known coextrusion molding method. That is, the resin constituting the inner layer 1a, the resin constituting the intermediate layer 1b, and the resin constituting the outer layer 1c are extruded into one mold by separate extruders to form a tube shape having a three-layer structure in the mold. It can be manufactured by doing so.
  • Tube container Tube container is A container body containing the above-mentioned extruded product having one end heat-sealed, It includes a cap fitting portion joined to the other end of the extruded product, one end of which is heat-sealed.
  • FIG. 2 is a plan view showing the configuration of a tube container according to an embodiment of the present invention.
  • the tube container 1 includes a container main body 11 and a cap fitting portion 12 joined to the container main body 11.
  • the tube container 1 is used by filling the container body 11 with the contents and fitting the cap to the cap fitting portion 12.
  • the content may be a highly viscous liquid or a semi-solid.
  • the contents are, for example, facial cleansers, cosmetics, toothpaste, daily necessities such as hand cream, and foods such as jam and butter.
  • the container body 11 is obtained by heat-sealing one end of the extruded product 1 described above.
  • the extruded product 1 may be provided with a printing layer on the outer surface before heat-sealing one end. That is, the container body 11 may further include a print layer.
  • the container main body 11 includes a body portion 21 and a seal portion 22 provided at one end of the body portion 21.
  • the body portion 21 is a portion of the extruded product 1 that is not heat-sealed.
  • the end portion of the body portion 21 not provided with the seal portion 22 has a cylindrical shape having a circular or elliptical shape when looking into the opening.
  • a cap fitting portion 12 is provided at an end opposite to the end where the seal portion 22 of the body portion 21 is provided.
  • the cap fitting portion 12 includes a shoulder portion 31 integrally continuous with the end portion of the body portion 21 not provided with the seal portion 22, and a cylindrical mouth portion 32 provided in the center of the shoulder portion 31. There is.
  • the cap fitting portion 12 is manufactured by injection molding or compression molding separately from the body portion 21, and is joined to the body portion 21.
  • the shoulder portion 31 has a truncated cone shape in which the outer surface of the tube container 10 facing the outer space and the inner surface of the tube container 10 facing the inner space each taper from the inner space to the outer space. ..
  • the outer peripheral edge of the shoulder portion 31 is continuous with the body portion 21.
  • the mouth portion 32 is provided at the center of the shoulder portion 31 so as to protrude outward.
  • the extruded product of the present invention and the tube container containing it have "petroleum-derived acid-modified polyethylene resin” and "plant-derived linear low-density polyethylene resin” in each of the inner and outer layers of the three-layer structure. Include in combination.
  • resins by using such a specific combination of resins, excellent stress crack resistance, excellent interlayer adhesion strength, and excellent production stability even when a plant-derived polyethylene resin is blended. Sex can be achieved (see examples below).
  • the extruded product of the present invention and the tube container containing the extruded product have the following advantages. Since the extruded product of the present invention and the tube container containing the extruded product contain the polyethylene resin derived from a plant, it can contribute to the reduction of CO 2 emissions as compared with the case of the polyethylene resin derived from petroleum. Further, since the extruded product of the present invention and the tube container containing the extruded product are manufactured by extrusion molding, there is no overlapping portion (that is, a seam) as seen in a laminated tube, and a seamless appearance can be realized. can.
  • the extruded product of the present invention and the tube container containing the same are manufactured by extrusion molding, the wall thickness is easy to be thickened as compared with the laminated tube, and sufficient strength is maintained even in a tube container having a large diameter. be able to.
  • the linear low density polyethylene resin 0.91g / cm 3 ⁇ 0.93g / cm 3, preferably has a density of 0.915g / cm 3 ⁇ 0.93g / cm 3 [1] or The extruded product according to [2].
  • the linear low-density polyethylene resin having a melt flow rate of 0.1 g / 10 min to 10 g / 10 min, preferably 1 g / 10 min to 5 g / 10 min [1] to [3].
  • the extruded product according to any one.
  • the unsaturated carboxylic acid or its anhydride is acrylic acid, methacrylic acid, ⁇ -ethylacrylic acid, maleic acid, fumaric acid, itaconic acid, citraconic acid, tetrahydrophthalic acid, chloromaleic acid, butenyl succinic acid, and The extruded product according to [5] selected from the group consisting of these anhydrides.
  • the acid-modified polyethylene resin is a petroleum-derived anhydrous maleic acid-modified low-density polyethylene resin, petroleum-derived anhydrous maleic acid-modified linear low-density polyethylene resin, or a mixture thereof [1] to [7].
  • the maleic anhydride-modified low density polyethylene resin 0.91g / cm 3 ⁇ 0.93g / cm 3, preferably a density of 0.915g / cm 3 ⁇ 0.93g / cm 3
  • the maleic acid-modified linear low density polyethylene resin anhydrous 0.91g / cm 3 ⁇ 0.93g / cm 3
  • a preferably has a density of 0.915g / cm 3 ⁇ 0.93g / cm 3
  • the maleic anhydride-modified low-density polyethylene resin has a melt flow rate of 0.1 g / 10 minutes to 10 g / 10 minutes, preferably 1 g / 10 minutes to 5 g / 10 minutes, and the maleic anhydride-modified low-density polyethylene resin is modified.
  • the extruded product according to any one of [1] to [10], wherein the intermediate layer contains a resin having a gas barrier property.
  • the resin having a gas barrier property is ethylene-vinyl alcohol copolymer resin (EVOH), nylon (NY), polyvinyl alcohol (PVA), polyacrylonitrile (PAN), or polyvinylidene chloride (PVDC).
  • EVOH ethylene-vinyl alcohol copolymer resin
  • nylon NY
  • PVA polyvinyl alcohol
  • PAN polyacrylonitrile
  • PVDC polyvinylidene chloride
  • the extruded product according to [11] which is preferably an ethylene-vinyl alcohol copolymer resin (EVOH).
  • Each of the inner layer and the outer layer contains an acid-modified polyethylene resin derived from petroleum and a linear low-density polyethylene resin derived from a plant at 9: 1 to 4: 6, preferably 9: 1 to 5: 5.
  • the inner layer has a thickness of 0.12 to 0.25 mm, preferably 0.14 to 0.24 mm, and the intermediate layer is 0.01 to 0.1 mm, preferably 0.02 to 0.
  • a tube container having a cap fitting portion joined to the other end of the extruded product having one end heat-sealed.
  • Resin A Petroleum-derived maleic anhydride-modified low-density polyethylene (density: 0.93 g / cm 3 , MFR: 1.0 g / 10 min (190 ° C, 2.16 kg load)) (hereinafter referred to as "MA-modified LDPE-1");
  • Resin B Petroleum-derived maleic anhydride-modified low-density polyethylene (density: 0.92 g / cm 3 , MFR: 1.5 g / 10 min (190 ° C, 2.16 kg load)) (hereinafter referred to as "MA-modified LDPE-2");
  • Resin C Petroleum-derived maleic anhydride-modified linear low-density polyethylene (density: 0.926 g / cm 3 , MFR: 1.2 g / 10 min (190 ° C, 2.16 kg load)) (hereinafter referred to as "MA-modified L-LDPE") Call);
  • Resin D Plant-derived low-density poly
  • Ethylene-vinyl alcohol copolymer (density: 1.14 g / cm 3 , MFR: 12.0 g / 10 min (210 ° C, 2.16 kg load)) (hereinafter referred to as "EVOH”) as a resin for the intermediate layer (barrier layer) Prepared.
  • Example 1A As the resin constituting the inner layer and the outer layer, a mixed resin obtained by dry-blending MA-modified LDPE-1 and bio-LDPE at a mass ratio of 50:50, respectively, was used. To 100 parts by mass of the mixed resin, 0.1 part by mass of an antioxidant and 2.5 parts by mass of titanium oxide as a coloring pigment were added to obtain a mixture. The pellets of the above mixture and the pellets of ethylene-vinyl alcohol copolymer were charged into the two hoppers of the uniaxial tube extruder, respectively.
  • Example 1B Except for using a mixed resin obtained by dry-blending MA-modified LDPE-1, MA-modified L-LDPE, and bio-LDPE at a mass ratio of 50:20:30, respectively, as the resin constituting the inner layer and the outer layer. , A tube was manufactured in the same manner as in Example 1A.
  • Example 1C Similar to Example 1A, except that a mixed resin obtained by dry-blending MA-modified LDPE-1 and bio-L-LDPE at a mass ratio of 50:50 was used as the resin constituting the inner layer and the outer layer. Manufactured a tube.
  • Example 1D As the resin constituting the inner layer and the outer layer, a mixed resin obtained by dry-blending MA-modified LDPE-1, MA-modified L-LDPE and bio-L-LDPE at a mass ratio of 50:20:30 was used. Except for the above, a tube was manufactured in the same manner as in Example 1A.
  • Example 1E As the resin constituting the inner layer and the outer layer, a mixed resin obtained by dry-blending MA-modified LDPE-1, MA-modified LDPE-2 and bio-L-LDPE at a mass ratio of 50:20:30 was used. Except for the above, a tube was manufactured in the same manner as in Example 1A.
  • Example 1F Except for using a mixed resin obtained by dry-blending MA-modified LDPE-1, MA-modified L-LDPE and bio-LDPE at a mass ratio of 60:30:10, respectively, as the resin constituting the inner layer and the outer layer. , A tube was manufactured in the same manner as in Example 1A.
  • the inner layer and the outer layer of the tube each contain a combination of "petroleum-derived acid-modified polyethylene resin” and "plant-derived low-density polyethylene resin (bio-LDPE)".
  • bio-LDPE plant-derived low-density polyethylene resin
  • Examples 1C, 1D and 1E "acid-modified polyethylene resin derived from petroleum” and “linear low-density polyethylene resin derived from plants (bio-L-LDPE)" are combined in each of the inner layer and the outer layer of the tube. Including. In these examples, even if the blending amount of the plant-derived polyethylene resin is increased, it shows excellent stress crack resistance, shows interlayer adhesion strength (0.4 kgf or more) that does not cause a quality problem, and is deformed into a molded product after continuous molding. Was not seen.
  • Example 2 Various tubes were manufactured by varying the blending amount of the plant-derived linear low-density polyethylene resin (Bio L-LDPE) and the circumference of the tube, and the blending amount of Bio L-LDPE and the circumference of the tube were determined. The effects on stress crack resistance, interlayer adhesion strength, and continuous formability were investigated.
  • Bio L-LDPE plant-derived linear low-density polyethylene resin
  • Example 2A As the resin constituting the inner layer and the outer layer, a mixed resin obtained by dry-blending MA-modified LDPE-1, MA-modified LDPE-2 and bio-L-LDPE at a mass ratio of 60:10:10 was used. , A tube was manufactured in the same manner as in Example 1A. The circumference of the tube (that is, the extruded product) was 20 mm, 60 mm, 100 mm, 160 mm, 180 mm, and 200 mm. The length of the tube was 100 mm and the average wall thickness was 0.46 mm.
  • Example 2B As the resin constituting the inner layer and the outer layer, a mixed resin obtained by dry-blending MA-modified LDPE-1, MA-modified LDPE-2 and bio-L-LDPE at a mass ratio of 50:20:30 was used. , A tube was manufactured in the same manner as in Example 1A. The circumference of the tube (that is, the extruded product) was 20 mm, 60 mm, 100 mm, 160 mm, 180 mm, and 200 mm. The length of the tube was 100 mm and the average wall thickness was 0.46 mm.
  • Example 2C As the resin constituting the inner layer and the outer layer, a mixed resin obtained by dry-blending MA-modified LDPE-1, MA-modified LDPE-2 and bio-L-LDPE at a mass ratio of 40:10:50, respectively, was used. , A tube was manufactured in the same manner as in Example 1A. The circumference of the tube (that is, the extruded product) was 20 mm, 60 mm, 100 mm, 160 mm, 180 mm, and 200 mm. The length of the tube was 100 mm and the average wall thickness was 0.46 mm.
  • Example 2A (when the blending amount of the polyethylene resin derived from a plant is 10% by mass)
  • Example 2A no cracks were found in the stress crack resistance test regardless of the circumference of the tube.
  • Example 2A the interlayer adhesion strength showing no problem in quality was shown regardless of the circumference of the tube.
  • Example 2A no deformation was observed in the molded product after continuous molding regardless of the circumference of the tube.
  • Example 2B (when the blending amount of the polyethylene resin derived from a plant is 30% by mass) In Example 2B, no cracks were found in the stress crack resistance test regardless of the circumference of the tube. Further, in Example 2B, the interlayer adhesion strength tended to decrease in a tube having a small peripheral length, but the interlayer adhesion strength showed no problem in quality regardless of which peripheral length the tube had. Further, in Example 2B, no deformation was observed in the molded product after continuous molding regardless of the circumference of the tube.
  • Example 2C (when the blending amount of the polyethylene resin derived from a plant is 50% by mass)
  • Example 2C no cracks were found in the stress crack resistance test regardless of the circumference of the tube.
  • Example 2C the interlayer adhesion strength tended to decrease in a tube having a small circumference or a large circumference, but the interlayer adhesion strength showed no problem in quality regardless of the circumference of the tube. rice field.
  • Example 2C no deformation was observed in the molded product after continuous molding regardless of the circumference of the tube.

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Abstract

Cet article moulé par extrusion pour un récipient de tube a une forme de tube dans son ensemble, et a une structure à trois couches constituée d'une couche interne, d'une couche externe et d'une couche intermédiaire interposée entre celles-ci. La couche interne et la couche externe contiennent chacune une résine polyéthylène modifiée par un acide dérivé du pétrole et une résine polyéthylène basse densité dérivée de plante.
PCT/JP2021/019229 2020-06-12 2021-05-20 Article moulé par extrusion pour récipient de tube et récipient de tube WO2021251101A1 (fr)

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Application Number Priority Date Filing Date Title
CN202180035104.4A CN115551787A (zh) 2020-06-12 2021-05-20 管容器用挤出成形品和管容器

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JP2020102146A JP2021195149A (ja) 2020-06-12 2020-06-12 チューブ容器用押出成形品およびチューブ容器
JP2020-102146 2020-06-12

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WO2021251101A1 true WO2021251101A1 (fr) 2021-12-16

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022196791A1 (fr) * 2021-03-19 2022-09-22 大和製罐株式会社 Article moulé par extrusion pour contenant tubulaire et contenant tubulaire

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JP7166656B2 (ja) 2020-11-13 2022-11-08 株式会社ベッセル・ジャパン 多層押出しチューブ容器

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006240666A (ja) * 2005-03-03 2006-09-14 Takeuchi Press Ind Co Ltd 多層チューブ容器
JP2015096431A (ja) * 2013-11-15 2015-05-21 大日本印刷株式会社 チューブ容器

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006240666A (ja) * 2005-03-03 2006-09-14 Takeuchi Press Ind Co Ltd 多層チューブ容器
JP2015096431A (ja) * 2013-11-15 2015-05-21 大日本印刷株式会社 チューブ容器

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022196791A1 (fr) * 2021-03-19 2022-09-22 大和製罐株式会社 Article moulé par extrusion pour contenant tubulaire et contenant tubulaire

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