WO2002038452A1 - Receptacle creux en polyolefine moule par extrusion - Google Patents

Receptacle creux en polyolefine moule par extrusion Download PDF

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Publication number
WO2002038452A1
WO2002038452A1 PCT/JP2001/009706 JP0109706W WO0238452A1 WO 2002038452 A1 WO2002038452 A1 WO 2002038452A1 JP 0109706 W JP0109706 W JP 0109706W WO 0238452 A1 WO0238452 A1 WO 0238452A1
Authority
WO
WIPO (PCT)
Prior art keywords
polyolefin
layer
container
polycyclic olefin
olefin copolymer
Prior art date
Application number
PCT/JP2001/009706
Other languages
English (en)
Japanese (ja)
Inventor
Peter Frisk
Hiroaki Ogita
Thorbjorn Andersson
Ib Leth
Original Assignee
Tetra Laval Holdings & Finance S.A.
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.)
Filing date
Publication date
Application filed by Tetra Laval Holdings & Finance S.A. filed Critical Tetra Laval Holdings & Finance S.A.
Priority to AU2002212712A priority Critical patent/AU2002212712A1/en
Publication of WO2002038452A1 publication Critical patent/WO2002038452A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B1/00—Layered products having a non-planar shape

Definitions

  • the present invention relates to a polyolefin extruded hollow molded container, and more particularly, to an extruded hollow molded container for a liquid food or the like having a good appearance.
  • high-density polyethylene containers have been used as extrusion-molded hollow containers for liquid foods such as milk, juice, coffee, and alcoholic beverages.
  • This high-density polyethylene container has poor gloss and appearance and gloss, gives it a high-class appearance, and does not look good.
  • the present invention uses high-density polyethylene or polypropylene Provided is a polyolefin extruded hollow-molded container having an excellent appearance by providing a layer having good appearance gloss and gloss on the outside of a natural polyolefin layer, and the outer layer of which can be collected and recycled together with the polyolefin. It is for this purpose.
  • the present inventors have conducted intensive studies to improve the above-described problems, and as a result, have found that the object of the present invention can be achieved by providing a polycyclic olefin copolymer-containing layer outside the polyolefin layer.
  • the present invention has been reached.
  • the gist of the present invention is a polyolefin extruded hollow molded container having a polycyclic olefin copolymer-containing layer outside a polyolefin layer.
  • the polyolefin extruded hollow molded container of the present invention is characterized in that the polycyclic olefin copolymer-containing layer is a single layer of the polycyclic olefin copolymer or a mixture layer of the polycyclic olefin copolymer and a polyolefin.
  • the polyolefin extruded hollow molded container of the present invention is characterized in that the polycyclic olefin copolymer is a copolymer of cyclic olefin and ethylene or a-olefin.
  • Examples of the polyolefin forming the extrusion hollow molded container of the present invention include polyethylene, polypropylene, ethylene-propylene copolymer, polybutene-1 and the like, and polyethylene is particularly preferable.
  • Examples of polyethylene include high-density polyethylene, medium-density polyethylene, low-density polyethylene, linear low-density polyethylene, and the like, and high-density polyethylene, which is particularly effective in the present invention, is preferable.
  • Polyolefin can be used as long as it is used for a hollow molded article such as a pottle.
  • the melt index (MFI: 190) used for polyethylene bottles is used. ° C, load 2.16 kg) can be used for 0.1-3 g, 10 minutes.
  • the thickness of the high-density polyethylene layer is usually 600 ⁇ m-1 mm.
  • the polycyclic olefin copolymer forming the polycyclic olefin copolymer-containing layer provided on the outside of the extrusion hollow molded container of the present invention is a copolymer of polycyclic olefin and ethylene or ⁇ -olefin, or a mixture of polycyclic olefin and monocyclic olefin.
  • Copolymers of cyclic olefins, copolymers of polycyclic olefins and non-conjugated gens, and the like include copolymers of polycyclic olefins and ethylene or ⁇ -olefin, especially copolymers of polycyclic olefins and ethylene Polymers are preferred.
  • Examples of olefins copolymerized with polycyclic olefins include propylene, 1-butene, 1-pentene, 1-hexene, 4-methinole-1-pentene, 1-heptene, 1-otaten, 1-nonene, 1-decene and the like.
  • Monocyclic Ole Examples of the fin include cyclobutene, cyclopentene, cyclohexene, 3-methylcyclohexene, cyclooctene and the like.
  • Examples of the non-conjugated diene include 1,4-hexadiene, 4-methyl-1,4-hexadiene, and 1,7-octadiene.
  • these olefins that are copolymerized with the polycyclic olefin can be used.
  • the copolymerization of the polycyclic olefin and the above olefins is usually carried out in the presence of a medium such as an organic solvent using a catalyst in which a transition metal compound such as titanium, zirconium, vanadium or hafnium is combined with an organic aluminum compound. In the absence, carried out at a temperature of-50-150 ° C.
  • the polycyclic olefin copolymer used in the present invention produced by the above-mentioned copolymerization is a random copolymer of the polycyclic olefin and the above-mentioned olefins, and the structural unit derived from the polycyclic olefin is 30%. one 9 5 mol%, in particular 4 0 8 0 mole 0/0 things Shi preferred Rere.
  • the polycyclic olefin copolymer-containing layer may be a single layer of the polycyclic olefin copolymer, or may be a mixture layer with another substance.
  • a substance that can be mixed with the polycyclic olefin copolymer polyethylene, polypropylene, ethylene-propylene copolymer, polyolefin such as polybutene-1, and particularly polyethylene are preferable.
  • polyethylene include high-density polyethylene, medium-density polyethylene, low-density polyethylene, and linear low-density polyethylene.
  • the polyolefin to be mixed with the polycyclic olefin copolymer it is preferable to use the same polyolefin as the polyolefin forming the inner layer of the container of the present invention. Therefore, high density polyethylene is desired as the polyolefin forming the inner layer of the container as described above, and high density polyethylene is particularly preferable as the polyolefin mixed with the polycyclic olefin copolymer.
  • the content of the polycyclic olefin copolymer is preferably at least 50% by weight, particularly preferably at least 60% by weight.
  • the thickness of the polycyclic olefin copolymer-containing layer is usually 100 to 300 ⁇ m.
  • the extrusion blow-molded container of the present invention comprises a polyolefin and a polycyclic olefin copolymer or the above-mentioned polycyclic olefin copolymer-containing material, and a polycyclic olefin copolymer or the above-mentioned polycyclic olefin copolymer-containing material. Melt pressing simultaneously to form an outer layer It can be manufactured by taking out and hollow molding.
  • a barrier layer material such as an oxygen barrier layer may be used as a layer other than the polycyclic olefin copolymer-containing layer.
  • High-density polyethylene MF 1: 0.5 g / 10 minutes
  • polycyclic olefin copolymer 60 mol% of polycyclic olefin component, 40 mol% of ethylene component
  • Example 2 a mixture of the polycyclic olefin copolymer and 25% by weight of high-density polyethylene (MFI: 0.5 gZl 0 min) was used.
  • MFI high-density polyethylene
  • a bottle-shaped hollow molded body was formed in the same manner as in Example 1 except for the above.
  • Example 1 The high-density polyethylene used in Example 1 was melt-extruded, and then a bottle-shaped hollow molded body was formed.
  • Example 1 10—20 50—60
  • the hollow container of the present invention has a container The surface gloss is greatly improved, so that the appearance is very good.
  • the hollow container of the present invention can be manufactured without using an adhesive, and the polycyclic olefin copolymer forming the outer layer of the container can be collected and recycled together with the high-density polyethylene.
  • the polycyclic olefin copolymer is highly rigid, which improves the rigidity of the container.
  • the hollow container of the present invention has improved rigidity, luster, transparency, resistance to tearing, heat resistance, moisture resistance, etc. of conventionally used plastics and the like by the polycyclic olefin copolymer-containing layer. Means better appearance and appearance of the container.
  • the polycyclic olefin copolymer-containing layer has, for example, good compatibility with the constituent polyethylene layer, and improves and improves the adhesion of the polyethylene layer. As a result, the resulting container shows good integrity without delamination.
  • the container molded with the layered polycyclic olefin copolymer-containing layer has excellent shape retention. Therefore, the workmanship of the container is good.
  • the polycyclic olefin copolymer-containing layer is provided in the constituent layer of the container wall, it is not necessarily clear in theory, but it complements the mechanical strength of the other layers and maintains the container shape well. Therefore, the appearance of the container is good.
  • the layer containing the polycyclic olefin copolymer not only has excellent heat resistance, but also can be treated at a high temperature of about 130, even if the containers are treated so that they come into contact with each other on the outer surface. Ideal for packaging containers that require autocrepe and retort treatment without causing damage or heat history inside the wall.
  • the inside of the container and the container itself are protected by the layer containing the polycyclic olefin copolymer, even when the content of the filling is strong or corrosion resistant, the barrier properties of the aluminum foil and the metal layer are maintained. No container leakage even at high temperatures.
  • the polycyclic olefin copolymer of the layer constituting the container of the present invention has a very good moisture rear property, and the moisture barrier property of the container is improved.
  • the oxygen scavenging performance of the barrier layer inside the polycyclic olefin copolymer layer can be maintained and protected. With the oxygen barrier property of the barrier layer inside the container wall, a complete barrier function can be added to the container.
  • the container of the present invention is used as an extruded hollow-formed container for liquid foods such as milk, juice, coffee, and liquors.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)

Abstract

L'invention concerne un réceptacle creux en polyéthylène moulé par extrusion, comprenant une couche de polyéthylène haute densité dont la face externe est recouverte d'une couche comprenant un copolymère d'oléfine polycyclique. La couche présente sur la face externe de la couche de polyéthylène haute densité présente un brillant satisfaisant et a été formée sans adhésif. Ce réceptacle présente par conséquent de bonnes qualités esthétiques et la couche externe peut être récupérée et recyclée conjointement au polyéthylène haute densité.
PCT/JP2001/009706 2000-11-09 2001-11-07 Receptacle creux en polyolefine moule par extrusion WO2002038452A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002212712A AU2002212712A1 (en) 2000-11-09 2001-11-07 Extrusion-molded hollow container made of polyolefin

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2000342268 2000-11-09
JP2000-342268 2000-11-09

Publications (1)

Publication Number Publication Date
WO2002038452A1 true WO2002038452A1 (fr) 2002-05-16

Family

ID=18816859

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2001/009706 WO2002038452A1 (fr) 2000-11-09 2001-11-07 Receptacle creux en polyolefine moule par extrusion

Country Status (2)

Country Link
AU (1) AU2002212712A1 (fr)
WO (1) WO2002038452A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005039435A1 (fr) * 2003-10-16 2005-05-06 Straumann Holding Ag Capsule externe a copolymere d'olefine cyclique pour proteger un dispositif medical

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0752340A (ja) * 1993-08-13 1995-02-28 Toppan Printing Co Ltd 多層プラスチック容器
JPH0872210A (ja) * 1993-10-26 1996-03-19 Mitsui Petrochem Ind Ltd ポリオレフィン系多層積層体および用途
JPH091750A (ja) * 1995-04-19 1997-01-07 Toppan Printing Co Ltd 多層プラスチック容器
JPH0977038A (ja) * 1995-09-20 1997-03-25 Toppan Printing Co Ltd 多層ブロー容器
JPH10119946A (ja) * 1996-10-14 1998-05-12 Kishimoto Akira 耐傷性の向上した環状オレフィン系共重合体容器
JP2000246838A (ja) * 1999-03-04 2000-09-12 Mitsui Chemicals Inc 耐熱性の容器または包装材
JP2000263703A (ja) * 1999-03-19 2000-09-26 Sumitomo Bakelite Co Ltd 多層シート及び容器
JP2001064321A (ja) * 1999-06-21 2001-03-13 Mitsui Chemicals Inc 硬化性樹脂用保存容器

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0752340A (ja) * 1993-08-13 1995-02-28 Toppan Printing Co Ltd 多層プラスチック容器
JPH0872210A (ja) * 1993-10-26 1996-03-19 Mitsui Petrochem Ind Ltd ポリオレフィン系多層積層体および用途
JPH091750A (ja) * 1995-04-19 1997-01-07 Toppan Printing Co Ltd 多層プラスチック容器
JPH0977038A (ja) * 1995-09-20 1997-03-25 Toppan Printing Co Ltd 多層ブロー容器
JPH10119946A (ja) * 1996-10-14 1998-05-12 Kishimoto Akira 耐傷性の向上した環状オレフィン系共重合体容器
JP2000246838A (ja) * 1999-03-04 2000-09-12 Mitsui Chemicals Inc 耐熱性の容器または包装材
JP2000263703A (ja) * 1999-03-19 2000-09-26 Sumitomo Bakelite Co Ltd 多層シート及び容器
JP2001064321A (ja) * 1999-06-21 2001-03-13 Mitsui Chemicals Inc 硬化性樹脂用保存容器

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005039435A1 (fr) * 2003-10-16 2005-05-06 Straumann Holding Ag Capsule externe a copolymere d'olefine cyclique pour proteger un dispositif medical
US8637128B2 (en) 2003-10-16 2014-01-28 Straumann Holding Ag Cyclic olefin copolymer external capsule for preserving medical device

Also Published As

Publication number Publication date
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