WO2019007829A1 - Réfrigérateur comprenant une garniture intérieure en plastique - Google Patents

Réfrigérateur comprenant une garniture intérieure en plastique Download PDF

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Publication number
WO2019007829A1
WO2019007829A1 PCT/EP2018/067549 EP2018067549W WO2019007829A1 WO 2019007829 A1 WO2019007829 A1 WO 2019007829A1 EP 2018067549 W EP2018067549 W EP 2018067549W WO 2019007829 A1 WO2019007829 A1 WO 2019007829A1
Authority
WO
WIPO (PCT)
Prior art keywords
inner lining
refrigerator
produced
polystyrene
wall
Prior art date
Application number
PCT/EP2018/067549
Other languages
English (en)
Inventor
Hakan OZKAN
Emre DEMIRTAS
Umut KILIC
Original Assignee
Arcelik Anonim Sirketi
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 Arcelik Anonim Sirketi filed Critical Arcelik Anonim Sirketi
Publication of WO2019007829A1 publication Critical patent/WO2019007829A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features
    • F25D23/06—Walls
    • F25D23/065—Details
    • F25D23/066—Liners
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
    • C08L25/02—Homopolymers or copolymers of hydrocarbons
    • C08L25/04—Homopolymers or copolymers of styrene
    • C08L25/06—Polystyrene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
    • C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features
    • F25D23/06—Walls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features
    • F25D23/06—Walls
    • F25D23/062—Walls defining a cabinet
    • F25D23/064—Walls defining a cabinet formed by moulding, e.g. moulding in situ
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
    • F25D2400/22—Cleaning means for refrigerating devices

Definitions

  • the present invention relates to a refrigerator wherein plastic is used for producing the body inner linings.
  • the bodies and doors of the refrigerators are composed of an inner lining and an outer wall that surround the compartments wherein the foodstuffs are placed, and an insulation material such as polyurethane is injected into the volume between the inner lining and the outer wall.
  • the plastic sheets forming the bodies and door inner linings of the refrigerators have generally two-layer structures and produced from styrene-based plastic material by extrusion, and then, the inner lining is formed by the thermoforming method.
  • the lower layer of the refrigerator inner lining in contact with the polyurethane is produced from a plastic material called HIPS (High impact polystyrene) resistant against polyurethane chemicals.
  • HIPS High impact polystyrene
  • the upper layer of the refrigerator inner lining facing the inner volume wherein the foodstuffs are placed is produced from glossy HIPS material, and in some embodiments the glossy HIPS is mixed at certain ratios with high impact polystyrene and high density polyethylene (HDPE) and compatibilizer.
  • Agents such as c-pentane, etc. are used for the foaming of the polyurethane while the polyurethane is injected into the insulation volume between the inner lining and the outer wall. Gas arising from said agents and condensing liquid react with the plastic used for producing the inner lining and cause cracks in the inner lining.
  • the smearing of acidic materials such as food oils and oil vapor on the body and the door inner lining and the residues of cleaning agents used in the cleaning of the inner lining have an abrasive effect and cause cracks by breaking polymer bonds. Since the plastic material used for producing the inner linings is subject to thermal stress during the operation of the cooling device, material fatigue arises and, together with the effect of the chemical corrosives, causes the formation of cracks more quickly.
  • a refrigerator wherein plastic liner sheets are used in manufacturing the inner casings of the body, the liner sheet forming the inner casing comprising a main layer produced of HIPS (high impact polystyrene) material by extrusion process, and a protective layer which is formed on the surface of the main layer facing the compartment by co-extrusion method, having a high chemical resistance and a gloss that is not decreased below a certain limit.
  • HIPS high impact polystyrene
  • the aim of the present invention is the realization of a refrigerator comprising an inner lining with decreased costs, that is produced from a single-layer plastic sheet instead of multi layers by changing the formulation thereof.
  • the body and the door inner linings are produced from plastic sheets by extrusion.
  • Polyethylene terephthalate glycol-modified (PETG) resin is added to the polystyrene(PS)-based base material at a ratio of 10-50%.
  • Figure 1 - is the schematic view of a refrigerator.
  • Figure 2 - is the schematic view of the lining structure of the refrigerator of the present invention.
  • the refrigerator (1) comprises a body (2); at least one door (3); at least one fresh food/freezing compartment (4) wherein foodstuffs and beverages are placed; an inner lining (5) that is produced from plastic material by extrusion method, that forms the inner surfaces of the body (2) and the doors (3) facing the compartments (4) and that is produced from a plastic sheet comprising polystyrene(PS)-based material; an outer wall (6) that forms the outer surfaces of the body (2) and the doors (3), and an insulation volume (7) that is disposed between the inner lining (5) and the outer wall (6) and wherein polyurethane (PU) is injected.
  • PU polyurethane
  • the inner lining (5) is produced from
  • a single-layer plastic sheet comprising polyethylene terephthalate glycol-modified (PETG) added to the polystyrene(PS)-based base material.
  • PETG polyethylene terephthalate glycol-modified
  • the plastic sheet comprising a blend of
  • LLCPE linear low-density polyethylene
  • the PETG used in the production of the inner lining (5) is suitable for the thermoforming process and provides high chemical resistant. Moreover, resistance against polyurethane chemicals such as polyurethane foaming agent is increased. Cracking problems caused by vegetable-animal food oils and cleaning chemicals are prevented. Mechanical characteristics are improved, and the breaking and bending strength of the material is increased.
  • the PETG resin used in the plastic material blend provides the desired gloss, the need for adding special polymeric additives that increase gloss in the production of the inner lining is eliminated, and the gloss value is increased by 30% in comparison with the prior art.
  • the single-layer extrusion method is used instead of the double-layer co-extrusion method forming the two layers, thus shortening the process time and providing energy savings.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Refrigerator Housings (AREA)
  • Laminated Bodies (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

La présente invention concerne un réfrigérateur (1) comprenant un corps (2) ; au moins une porte (3) ; au moins un compartiment réfrigérateur/congélateur (4) dans lequel les produits alimentaires et les boissons sont placés ; une garniture intérieure (5) qui est produite par un processus d'extrusion à partir d'une matière de base à base de polystyrène (PS) et forme les surfaces intérieures du corps (2) et des portes (3) faisant face aux compartiments (4) ; une paroi extérieure (6) qui forme la surface extérieure du corps (2) et des portes (3) ; et un volume d'isolation (7) prévu entre la garniture intérieure (5) et la paroi extérieure (6), dans lequel est injecté du polyuréthane (PU). La garniture intérieure (5) est produite à partir d'une feuille de plastique monocouche comprenant du polyéthylène téréphtalate glycol-modifié (PETG) ajouté à la matière de base à base de polystyrène (PS).
PCT/EP2018/067549 2017-07-04 2018-06-29 Réfrigérateur comprenant une garniture intérieure en plastique WO2019007829A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TRA2017/09820 2017-07-04
TR2017/09820A TR201709820A2 (tr) 2017-07-04 2017-07-04 Plasti̇k i̇ç duvar i̇çeren buzdolabi

Publications (1)

Publication Number Publication Date
WO2019007829A1 true WO2019007829A1 (fr) 2019-01-10

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ID=62784168

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2018/067549 WO2019007829A1 (fr) 2017-07-04 2018-06-29 Réfrigérateur comprenant une garniture intérieure en plastique

Country Status (2)

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TR (1) TR201709820A2 (fr)
WO (1) WO2019007829A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021053081A1 (fr) 2019-09-19 2021-03-25 Basf Se Amélioration des propriétés à long terme de mousses de polyuréthane rigides à alvéoles fermées

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992013716A1 (fr) * 1991-01-30 1992-08-20 E.I. Du Pont De Nemours And Company Articles fabriques presentant une resistance amelioree aux hydrohalocarbones
EP2024696B1 (fr) 2006-05-31 2009-10-21 Arçelik A.S. Réfrigérateur
CN101831136A (zh) * 2010-04-21 2010-09-15 深圳市科聚新材料有限公司 一种高强度高韧性阻燃abs复合材料及其制备方法
EP2767559A1 (fr) * 2011-10-11 2014-08-20 Braskem S.A. Polypropylène pour la confection d'articles thermoformés, articles de grande taille, profonds, complexes et/ou épais, procédé de thermoformage de polypropylène modifié en articles de grande taille, profonds, complexes et/ou épais, et utilisation du polypropylène
CN106832812A (zh) * 2017-01-22 2017-06-13 合肥华凌股份有限公司 聚酯材料在制备冰箱内胆板材上的应用、冰箱、冰箱内胆以及其板材的制备方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992013716A1 (fr) * 1991-01-30 1992-08-20 E.I. Du Pont De Nemours And Company Articles fabriques presentant une resistance amelioree aux hydrohalocarbones
EP2024696B1 (fr) 2006-05-31 2009-10-21 Arçelik A.S. Réfrigérateur
CN101831136A (zh) * 2010-04-21 2010-09-15 深圳市科聚新材料有限公司 一种高强度高韧性阻燃abs复合材料及其制备方法
EP2767559A1 (fr) * 2011-10-11 2014-08-20 Braskem S.A. Polypropylène pour la confection d'articles thermoformés, articles de grande taille, profonds, complexes et/ou épais, procédé de thermoformage de polypropylène modifié en articles de grande taille, profonds, complexes et/ou épais, et utilisation du polypropylène
CN106832812A (zh) * 2017-01-22 2017-06-13 合肥华凌股份有限公司 聚酯材料在制备冰箱内胆板材上的应用、冰箱、冰箱内胆以及其板材的制备方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021053081A1 (fr) 2019-09-19 2021-03-25 Basf Se Amélioration des propriétés à long terme de mousses de polyuréthane rigides à alvéoles fermées

Also Published As

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