WO2011071408A1 - Procédé de fabrication d'une bande absorbant l'humidité réalisée dans un polystyrène expansé, et emballage - Google Patents

Procédé de fabrication d'une bande absorbant l'humidité réalisée dans un polystyrène expansé, et emballage Download PDF

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Publication number
WO2011071408A1
WO2011071408A1 PCT/RU2010/000109 RU2010000109W WO2011071408A1 WO 2011071408 A1 WO2011071408 A1 WO 2011071408A1 RU 2010000109 W RU2010000109 W RU 2010000109W WO 2011071408 A1 WO2011071408 A1 WO 2011071408A1
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WO
WIPO (PCT)
Prior art keywords
tray
layers
sheet
pores
polystyrene
Prior art date
Application number
PCT/RU2010/000109
Other languages
English (en)
Russian (ru)
Inventor
Виктор Борисович ГУРИЧЕВ
Юрий Владимирович ПАНИЧЕВ
Original Assignee
Gurichev Victor Borisovich
Panichev Uriy Vladimirovich
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
Priority claimed from RU2009145813/05A external-priority patent/RU2421333C1/ru
Application filed by Gurichev Victor Borisovich, Panichev Uriy Vladimirovich filed Critical Gurichev Victor Borisovich
Publication of WO2011071408A1 publication Critical patent/WO2011071408A1/fr

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Classifications

    • 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
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/24—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants
    • B65D81/26—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants with provision for draining away, or absorbing, or removing by ventilation, fluids, e.g. exuded by contents; Applications of corrosion inhibitors or desiccators
    • B65D81/264—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants with provision for draining away, or absorbing, or removing by ventilation, fluids, e.g. exuded by contents; Applications of corrosion inhibitors or desiccators for absorbing liquids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/04—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities
    • B29C44/06—Making multilayered articles
    • B29C44/065—Making multilayered articles comprising at least one barrier layer
    • 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
    • B65D2577/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks, bags
    • B65D2577/10—Container closures formed after filling
    • B65D2577/20—Container closures formed after filling by applying separate lids or covers
    • B65D2577/2025—Multi-layered container, e.g. laminated, coated

Definitions

  • the invention relates to the production of packages, and in particular to a method for producing a foamed polystyrene sheet, which is used to obtain packages, as well as to the design of packages obtained from such a sheet — trays, substrates, pallets and similar products by thermoforming.
  • EPS expanded polystyrene
  • Expandable polystyrene extruded expanded polystyrene
  • Extruded expanded polystyrene is made from general purpose polystyrene granules. At the stage of extrusion by special methods, foamed polystyrene tape is obtained, which is subsequently molded into certain products.
  • polystyrene can be foamed up to 100% of its own density. Foaming can take place during extrusion, as well as during post-formation operations, such as thermoforming. Successful extrusion of foamed plastic depends on the regulation of temperature and pressure inside the extruder. Thanks to the foaming process, a thick film can be made of the same amount of material as a thinner one. This fact allows for economical production. In the production of CHD, great importance is attached to the homogeneity of its cellular structure. During physical foaming without special additives, a “rough” structure foam is obtained.
  • nucleation agents which, when foaming, are centers of foam growth.
  • nucleusator is introduced into polystyrene, the more cells are formed, and their size will be smaller.
  • the amount of nucleator introduced also affects the speed of the foaming process itself.
  • talc is One of the best inactive (passive) type nucleators, the action of which is based on the formation of obstacles for the exit of the foaming gas from the polymer melt. Due to the heat-insulating properties of IPNs, two-sided heating is used during thermoforming. IPN has a structure that is a multitude of unreported cells. It is a good damping material (with sufficient thickness), a good heat insulator. Its surface is wear-resistant, which is an important factor when choosing packaging for the product.
  • the UPU has excellent heat-insulating properties, the dishes from the UPU for hot food products will keep them hot and not burn their hands, and the packaging for deep-frozen products will ensure their safety during transportation. Perfectly retaining moisture, UPU lets air pass in small amounts, “breathes”, which is a necessary condition for the preservation of fruits and confectionery.
  • Such packaging is quite easy to form, in addition, the IPN can be painted in any color. Packing from UPU has a relatively low price compared to the cost of the goods. Such packaging looks beautiful and neat, makes a good impression on the buyer.
  • edges of the packaging and the packaging film remain dry and clean, which is a great advantage for both the seller and the buyer.
  • the opaque surface of the tray hides the color of the absorbed liquid. Even if the pre-packaged meat is unevenly placed on the counter, the liquid will not leak from the sides, the film and the counter will remain clean and there will be no need to repack wet or sticky packages.
  • the process of processing and disposal of such a tray is simplified due to the fact that all layers are made of the same material.
  • foamed tape consists in the fact that general-purpose polystyrene (GPPS) in granules is poured into an extrusion line.
  • GPPS general-purpose polystyrene
  • technological additives are added: talc for the foaming process, dye for color and a moisture-absorbing additive (only for the manufacture of a moisture-absorbing foam tape).
  • the blowing agent is gases (butane, isobutane, pentane, etc.), which are introduced into the cylinder of the primary extruder in a liquid state.
  • Each extruded polystyrene extrusion line consists of primary and secondary extruders.
  • gas is mixed with the molten polymer and, under high pressure, enters the head of the line, from which it emerges in the form of a bubble. It is at this moment that gas bubbles begin to grow, and foam the tape. Then the tape is pulled over the mandrel (cylinder 1-2 meters long) and then the tape, cooled on the mandrel, enters the pulling rolls and then to the winder. After this, the rolls with tape go through the maturation stage for several days. During this period of time, air enters the pores of the tape and displaces gas from them.
  • the tape is fed to the molding workshop for the production of packaging of a given shape (RU JNTQ 2089565, C08J9 / 04, C08L25 / 06, publ. 09/10/1997). This decision was made as a prototype for the claimed method.
  • the disadvantage of this method of obtaining a tape of expanded polystyrene is that it is a known technology for the manufacture of conventional foam tape, in which most pores remain closed. Products obtained from such a tape do not have moisture-absorbing properties.
  • a tray is made that is considered as a basic power element. Then, a moisture-absorbing layer is formed on the working surface of the tray (the working surface is the surface on which the product is laid), created by laying a hydrophobic gasket, on top of which a protective layer is placed (can be made of UPU), in which holes are made for the passage of moisture (liquid) into the gasket .
  • IPN in the form of a tape has a porous structure, when stiffening and ripening, the uniformity of the structure of the tape is maintained, in which closed pores are combined with open pores.
  • Such a tape is not hygroscopic, due to the absence of conditions for the penetration of water molecules or water droplets into internally located pores in the structure of the tape.
  • the present invention in part of the method is directed to the solution
  • packaging such as a tray or substrate, with the function of absorbing moisture from the product when forming the tray from a single-layer IPN of a heterogeneous structure.
  • the technical result achieved in this case is to simplify the design of the package due to its disposable
  • the technical result achieved in this case is to improve the physicochemical and operational characteristics of the IPN to enable simplification of the molding process by packaging with a moisture absorption function.
  • the indicated technical result in terms of the method is achieved by the fact that in the method for producing a moisture-absorbing tape from foamed polystyrene, b consisting in filling polystyrene in granules into the extrusion line and adding talc, followed by stirring at a given temperature until a melt is formed, then adding a technological additive to the melt in liquid form to carry out the foaming process, mixing these components with the melt at a given pressure and applying under pressure melt into the head of the line, at the exit from which the process of foaming polystyrene is carried out with the formation of a bubble, which is pulled onto the mandrand and sent to the tyan the rolls are formed to form a sheet web of a given width and thickness, while stirring, a hydrophobic additive is added to the melt, and when the melt leaves the extrusion line head, under normal ambient pressure, intensive blowing of the outer layers of the tape with cold air to form surface layers with closed pores and keeping open pores inside tapes.
  • the specified technical result in part of the device is achieved by the fact that in a tape made of expanded polystyrene is molded from expanded polystyrene and in it layers of material that are externally located and located adjacent to the outer surface are made with closed pores, and a layer of material located between the layers with closed pores , filled with open interconnected pores.
  • the specified technical result in terms of the device is achieved by the fact that in the packaging for a moisture-containing food product, which is a tray made by molding from a sheet of foamed polystyrene, which includes a bottom for placing the food product, side walls that are inclined with respect to the bottom surface and made with a flange, while in the bottom from the side of the cavity of the tray, recesses or holes are made, with a depth of part of the thickness of the bottom material for draining liquid into the inner layer of the bottom, lotto vsholnen single-piece from a sheet of foamed polystyrene, wherein the layers of sheet material and disposed externally disposed surrounding to the outer surface, made with closed pores, and the layer of sheet material located between the layers with closed pores, made with open, communicating pores, some of which are communicated through recesses or openings with the cavity of the tray in the product placement area in the tray.
  • the specified technical result in part of the device is achieved by the fact that in the substrate for a moisture-containing food product, which is a plate made by molding from a sheet of foamed polystyrene, while in the plate from the side intended to accommodate the food product, recesses or holes are made with a depth of part of the thickness of the plate material for liquid to drain into the inner layer of the plate, the latter is made monoblock from a sheet of foamed polystyrene, in which layers of the material of the sheet Women and located adjacent to the outer surface are filled with closed pores, and the sheet material layer located between the closed pore layers is made with open, communicating pores, some of which are communicated through recesses or openings with the cavity of the tray in the product placement area on the plate.
  • FIG. 1 shows a tray made of IPN with moisture-absorbing properties for products.
  • a packaging design for food products especially for moisture-generating
  • the invention in terms of packaging design is considered on the example of a tray, which can equally apply to packaging of a different shape, for example, in the form of a substrate or a cup-shaped shape or in the form of a different shape.
  • the tray is made in monoblock thermoforming in a known manner from a foam polystyrene tape and has a bottom 1, from which side walls 3 leave a slight slope through smooth arcuate transitions 2.
  • the side walls 3 are made with a flange 4.
  • the tray is intended for laying in it and placing the food product 5, mainly in the lag-containing.
  • a packaging film 6 which excludes or reduces the gas exchange of the product with an oxygen-containing atmosphere in order to extend the shelf life of the food product in a fresh state.
  • the food product 5 Located on the bottom of the tray 1, the food product 5 releases moisture in the form of a liquid that drains to the bottom of the tray.
  • the thickness of the side walls is equal to the thickness of the bottom, and the thickness of the bottom, made in the central part slightly convex from the side of the holes or recesses, is made constant. It is possible to make the side walls of a smaller thickness than the thickness of the bottom.
  • the bottom can be made rectangular in plan or in the form of a circle or other shape. When the bottom is made round or not rectangular in plan, a side wall such as a wall of a glass-like shape of the container is also tilted to the bottom to ensure grouping of such shape of the trays by stacking one into another.
  • a foam polystyrene tape was used, the feature of which is that it is a material that is uniform in thickness and area with the structure of cells or pores, which are closed in the outer layers 7 of the tape and do not communicate with the atmosphere, but in the inner layer 8 located between the outer layers 7, the cells or pores are made open, communicating with each other and with the atmosphere through open pores along the ends of the tape 9, formed by cutting off the tray from the flap when cutting molded trays. From the bottom 1 in the direction of the inner layer, through the outer protective layer from the side of the cavity of the tray, recesses 10 or blind holes are made through which the pore cavities of the inner layer communicate with the atmosphere, and when the product is closed with a film, with the cavity of the tray under this film.
  • protruding elements 11 are made for supporting one tray to flanging the other tray when stacking the trays in one another.
  • liquid that has leaked or drained from a food product flows into recesses or blind holes and penetrates into the communicating pores of the inner layer.
  • a hydrophobic additive was added to the polymer during the molding of a sheet of foamed polystyrene, it is possible for water (liquid) molecules to flow into the inner layers of the tape without catching on the roughness of the material.
  • the addition of antistatic type in the manufacture of the tape and the molding of the product provides a reduction in roughness, ensuring a smooth surface of the tape.
  • the substrate for the moisture-containing food product is a plate made by molding from a sheet of foamed polystyrene, while in the plate from the side intended for the placement of the food product is made recesses or holes with a depth of part of the thickness of the plate material for draining the liquid into the inner layer of the plate.
  • the plate is made monoblock from a sheet of foamed polystyrene, in which the layers of sheet material externally located and adjacent to the outer surface are made with closed pores, and the layer of sheet material located between the layers with closed pores is made with open pores, communicating pores, some of which communicated through recesses or holes with the cavity of the tray in the area of product placement on the plate.
  • a foam polystyrene tape is used in which the layers of the structure adjacent to the outer surface of the tape are made with closed pores, and the layer of the structure located between the outer layers is made with open interconnected pores.
  • foamed tape is that along with the main polymeric material, in this case general purpose polystyrene, talc and a blowing agent are added - a gas, for example isobutane.
  • a gas for example isobutane.
  • Talc is added together with polystyrene, and gas is added somewhat later at the end of the primary extruder.
  • Gas is introduced into polystyrene in its molten state. Bubbles of talc are a kind of conductor of gas bubbles. In this molten state, the mass passes into a secondary extruder, where it is further mixed and a certain stable state is achieved.
  • the most important process indicators are melt pressure and temperature. Then comes the most important event - the transfer of mass into a cylindrical head and the exit of mass from the head.
  • the method of producing foamed polystyrene is carried out by mixing in the extrusion line of granular polystyrene containing talc, not more than 20% of May. blowing agent, and not more than 1% of May. antistatic, foaming the resulting mixture at a temperature above the glass transition temperature of polystyrene, followed by keeping the expanded polystyrene at room temperature, while after mixing, partial removal is carried out no more than 60% in May. a blowing agent by keeping the mixture at a temperature below the glass transition temperature of polystyrene.
  • talc as a nucleating additive is based on the homogeneous distribution of particles in the polymer melt and on the ability to capture gas bubbles formed at the time of foaming.
  • Particles of talcum having a sheet-like (scaly) structure capture gas bubbles, they form aggregates of several particles in the polymer melt, inside which gas bubbles are placed. In this regard, it becomes possible to achieve a uniform distribution of gas bubbles in the polymer mass. The result is a foamed sheet with a close to uniform porous structure,
  • blowing agents are aliphatic hydrocarbons containing from 2 to 6 carbon atoms, such as propane, butane, n-pentane, isopentane, hexane, cyclohexane, etc. which can be used either as individual compounds or in a mixture, petroleum ether and halogenated derivatives of C] -C 3 aliphatic hydrocarbons, such as various chlorofluoro derivatives of methane, ethane and ethylene, such as dichloro-difluoromethane, 1,2 , 2-trifluoroethane, 1,1,2-trichloro- ethane, etc.
  • the foaming agent is usually used in an amount of from 2 to 20, and preferably in the range of 4 to 10 by weight relative to the polymer.
  • Antistatic agents are those compounds that are commonly used to improve surface properties, finishes, free flow, and processability of styrene polymer particles. Such antistatic agents are well known and described in the technical literature, as an example, K. Johnson, Antistatic Compositions for Textiles and Plastics, Noyes Data Corporation, Park Ridge N.J. can be mentioned here. 1976.
  • antistatic agents examples include: fatty acid esters, such as butyl stearate, mono-hydroxy or polyhydroxy alcohols, such as glycerin, amines, such as, for example, ethoxylated tertiary alkylamine, fatty acid dialkanolamine, amides, such as, for example, ⁇ , ⁇ -bis- (2-hydroxyethylstearamide), polyoxyethylene derivatives, such as, for example, polyethylene glycol hexadepyl ether, ethylene oxide / propylene oxide copolymers, aminated soaps, such as e.g.
  • octadecylamine salt of stearic acid amine salts of alkyl sulfates, such as, for example, octadecyl sulfate salt of guanidine, quaternary ammonium compounds, such as, for example, octadecyl-trimethyl ammonium chloride, alkyl phosphates, such as, for example, bis-phosphate dodecyl , amine salts of alkylphosphinic acids, such as, for example, a salt of octadecylphosphinic acid with triethanolamine, etc.
  • alkyl phosphates such as, for example, bis-phosphate dodecyl
  • amine salts of alkylphosphinic acids such as, for example, a salt of octadecylphosphinic acid with triethanolamine, etc.
  • Antistatic agents that are preferred for use in the method according to the present invention are: ethylene oxide propylene oxide block copolymers with ethylene oxide contents ranging from 10 to 50 weight percent and molecular weights ranging from 1000 to 5000 known in the market under the brand name GIENDION (R) or ethoxylated tertiary alkylamine known in the market under the trademark 1.C.1.
  • the amount of antistatic agent is usually not more than 1 relative to the polymer, i.e., it is in the range from 0.001 to 0.5 and preferably from 0.010 to 0.1 by weight relative to the polymer.
  • the polymer particles can be coated with an antistatic agent by mixing methods that are well known in the literature, for example, foaming particles can be treated with an appropriate amount of antistatic agent in a rotary drum or cylinder.
  • Coating the particles with an antistatic agent facilitates the further sieving step, which makes it possible to obtain different fractions, each of which has a controlled particle size and is suitable for various applications.
  • a feature of the present invention is that at the moment the melt exits from the head, intensive blowing of the outer layers of the tape with cold air is carried out, thus forming closed pore surface layers. Inside the pores can remain open.
  • a special hydrophobic additive is added, which allows moisture molecules to flow into the inner layers of the tape without clinging to the material of the tape.
  • the task is to create surface layers of tape with closed pores (two layers of 5-10% thickness) and an inner layer with open pores (80-90% of thickness), the task of which is to absorb moisture.
  • Fatty acids make the surface of the filler hydrophobic, which, firstly, increases the compatibility of the filler with a non-polar polymer, and secondly, significantly reduces water absorption during storage of the filler.
  • the treated filler which, like the polymer, has a hydrophobic surface, is much more easily distributed in the polymer matrix, and the final melt has a lower viscosity, which reduces the load on the equipment and prevents mechanical degradation.
  • the absence of large pigment aggregates and low melt viscosity can improve equipment performance.
  • polystyrene the following additives can be used with varying degrees of dispersion, from solutions to emulsions and various chemical nature: acrylic polymer (AP), polyvinyl acetate (PVA), superplasticizer (C-3), detergent (MS), sintered saponified (PTO), carboxymethyl cellulose (CMC), styrene butadiene latex (BDSL) at a dosage of 0.2-0.8% by weight of polystyrene.
  • acrylic polymer PVA
  • C-3 superplasticizer
  • MS detergent
  • PTO sintered saponified
  • CMC carboxymethyl cellulose
  • BDSL styrene butadiene latex
  • the present invention is industrially applicable, based on the use of known technology for the production of expanded polystyrene material.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Abstract

La présente invention concerne la fabrication d'un emballage, cet emballage étant destiné à un produit alimentaire renfermant de l'humidité et comprenant une barquette obtenue par moulage dans une feuille de polystyrène expansé et comportant un fond dans lequel est disposé le produit alimentaire, et des parois latérales qui sont formées de façon à être inclinées par rapport à la surface du fond et qui comportent des bords rabattus. Des creux ou des trous sont formés sur une profondeur dans l'épaisseur du matériau du fond de sorte que le liquide s'écoule dans la couche interne du fond. La barquette se présente sous la forme d'une unité monobloc conçue dans une feuille de polystyrène expansé et dans laquelle les couches de matériau en feuille disposées sur l'extérieur et adjacentes à la surface externe ont des pores fermés, alors que la couche de matériau en feuille placée entre les couches pourvues des pores fermés ont des orifices qui communiquent avec les pores, certains d'entre eux communiquant par les creux ou trous de la cavité de la barquette dans la zone où est disposé le produit.
PCT/RU2010/000109 2009-12-11 2010-03-15 Procédé de fabrication d'une bande absorbant l'humidité réalisée dans un polystyrène expansé, et emballage WO2011071408A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
RU2009145813 2009-12-11
RU2009145816 2009-12-11
RU2009145813/05A RU2421333C1 (ru) 2009-12-11 2009-12-11 Способ получения влаговпитывающей ленты из вспененного полистирола и упаковка из этой ленты (варианты)
RU2009145816 2009-12-11

Publications (1)

Publication Number Publication Date
WO2011071408A1 true WO2011071408A1 (fr) 2011-06-16

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2007353C1 (ru) * 1991-05-20 1994-02-15 Волжское объединение по производству легковых автомобилей Лоток для хранения и транспортирования продуктов в штабеле
RU2089565C1 (ru) * 1991-05-31 1997-09-10 ЭНИКЕМ С.п.А. Способ получения вспененного полистирола и вспененный полистирол
WO1998056430A2 (fr) * 1997-06-11 1998-12-17 The Dow Chemical Company Mousses thermoplastiques absorbantes extrudees
DE29723954U1 (de) * 1996-09-19 1999-12-02 Linpac Plastics Ltd Schale zur Aufnahme von Flüssigkeiten absondernden Nahrungs- und Genußmitteln
WO2000069750A1 (fr) * 1999-05-14 2000-11-23 Groene Horst Ditmar Film, utilise en particulier a des fins d'emballage, et emballage ainsi obtenu
WO2005072083A2 (fr) * 2003-12-23 2005-08-11 Colombo Edward A Mousse polymere a alveoles ouverts tres absorbante et emballage alimentaire produit a l'aide de ladite mousse polymere
RU2339514C2 (ru) * 2003-06-05 2008-11-27 Нмс С.А. Непрерывный способ изготовления сплошных, полых и открытых профилей (варианты)

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2007353C1 (ru) * 1991-05-20 1994-02-15 Волжское объединение по производству легковых автомобилей Лоток для хранения и транспортирования продуктов в штабеле
RU2089565C1 (ru) * 1991-05-31 1997-09-10 ЭНИКЕМ С.п.А. Способ получения вспененного полистирола и вспененный полистирол
DE29723954U1 (de) * 1996-09-19 1999-12-02 Linpac Plastics Ltd Schale zur Aufnahme von Flüssigkeiten absondernden Nahrungs- und Genußmitteln
WO1998056430A2 (fr) * 1997-06-11 1998-12-17 The Dow Chemical Company Mousses thermoplastiques absorbantes extrudees
WO2000069750A1 (fr) * 1999-05-14 2000-11-23 Groene Horst Ditmar Film, utilise en particulier a des fins d'emballage, et emballage ainsi obtenu
RU2339514C2 (ru) * 2003-06-05 2008-11-27 Нмс С.А. Непрерывный способ изготовления сплошных, полых и открытых профилей (варианты)
WO2005072083A2 (fr) * 2003-12-23 2005-08-11 Colombo Edward A Mousse polymere a alveoles ouverts tres absorbante et emballage alimentaire produit a l'aide de ladite mousse polymere

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