EP0189843B1 - Aufschäumbares Kunststoffgranulat und daraus hergestelltes Packmaterial - Google Patents

Aufschäumbares Kunststoffgranulat und daraus hergestelltes Packmaterial Download PDF

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Publication number
EP0189843B1
EP0189843B1 EP86100880A EP86100880A EP0189843B1 EP 0189843 B1 EP0189843 B1 EP 0189843B1 EP 86100880 A EP86100880 A EP 86100880A EP 86100880 A EP86100880 A EP 86100880A EP 0189843 B1 EP0189843 B1 EP 0189843B1
Authority
EP
European Patent Office
Prior art keywords
particles
granular material
packaging material
orifice
plastics
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
EP86100880A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0189843A2 (de
EP0189843A3 (en
Inventor
Günter Kohaut
Werner Dr. Weber
Herman Groenendijk
Adrianus Cornelis Poppelaars
Wilhelmus Henrikus J. Janssen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shell Internationale Research Maatschappij BV
Original Assignee
Shell Internationale Research Maatschappij BV
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 Shell Internationale Research Maatschappij BV filed Critical Shell Internationale Research Maatschappij BV
Priority to AT86100880T priority Critical patent/ATE56415T1/de
Publication of EP0189843A2 publication Critical patent/EP0189843A2/de
Publication of EP0189843A3 publication Critical patent/EP0189843A3/de
Application granted granted Critical
Publication of EP0189843B1 publication Critical patent/EP0189843B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B65D81/02—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 specially adapted to protect contents from mechanical damage
    • B65D81/05—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 specially adapted to protect contents from mechanical damage maintaining contents at spaced relation from package walls, or from other contents
    • B65D81/09—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 specially adapted to protect contents from mechanical damage maintaining contents at spaced relation from package walls, or from other contents using flowable discrete elements of shock-absorbing material, e.g. pellets or popcorn
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S206/00—Special receptacle or package
    • Y10S206/814—Space filler
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2973—Particular cross section
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2973—Particular cross section
    • Y10T428/2975—Tubular or cellular
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]

Definitions

  • Packing or filling materials made of loose foamed plastic particles are known and are used in large quantities. The main reasons for this are their freedom from dust, resistance to moisture and mold, abrasion resistance and their inert behavior towards the packaged goods as well as their low weight.
  • plastic particles are usually made available as compact, blowing agent-containing, non-foamed granules and are only foamed to the final shape by known methods in the packaging plant.
  • the effect of the foamed plastic particles as packaging material is based on the fact that they interlock or interlock with each other after the packaging goods have been embedded and also enclose a large void volume.
  • the void volume is the volume enclosed, but not filled, by the particles when the material is poured into the pile. This creates a kind of "resilient shell” around the goods.
  • the mutual interlocking with the simultaneous formation of a large void volume is particularly important in order to prevent the packaged article from "wandering" through the packaging particles as a result of the transporter vibration and to achieve an optimal permanent "spring effect".
  • the particles forming the packaging material In contrast to the ability to interlock with other particles and thereby form a large void volume, there is a requirement that the particles forming the packaging material also have good flow properties.
  • the light, foamed plastic particles are usually brought into storage containers in free fall from storage silos. To this end, the particles must be able to flow freely, since otherwise the particles become “bridged” in the storage bunker and the uniform outflow and thus the quantity metering of the particles is disturbed or prevented. This leads to sensitive malfunctions, particularly in fully automatic packaging systems.
  • the object of the invention was therefore to avoid the disadvantages of the known particle shapes and in particular to provide a foamed plastic granulate which, after foaming, gives a packaging material which has good flow properties, good toothing properties and at the same time a large void volume of the bed.
  • the invention proposes a plastic granulate made of foamable particles in a star shape, which consists of particles which are derived from a first or cloverleaf-shaped base body with at least three legs lying in one plane, characterized in that the particles have at least one Have omission (a hole).
  • the invention further relates to the use of these foamable plastic granules for the production of appropriately foamed packaging materials and to the foamed packaging materials themselves.
  • the number of legs is at least three, in particular three, four, fifth or six. According to the invention, preference is given to granular particles which have three or six legs.
  • the outlet (s) of the granule particles according to the invention can be located in one of the legs or in the center of the granule particles.
  • parts are preferred which have omissions in all legs; further preferred are those particles in which the omission is only in the center, which applies in particular to six-legged particles. If the omissions are only relatively small and their size is in the lower part of the ranges mentioned below, it may be advantageous in some cases to add an omission in the center of the granule particles in addition to the omissions in the legs.
  • the omissions are preferably predominantly round to oval or lenticular in shape; however, other shapes, such as polygons, for example triangles, quadrangles, hexagons, etc., are also possible in principle.
  • the size of these omissions is generally such that their area is approximately 25% to approximately 75%, preferably 30% to 60%, based on the respective leg area or the total area with only one omission in the center.
  • the diameter or the largest clear width of these omissions is usually 0.2 to 2.0 mm, preferably 0.3 to 1.5 mm.
  • the wall thickness (cutting length) of the granulate particles according to the invention is generally in the range from 2.5 to 7.0 mm, preferably 3.0 to 6.0 mm.
  • the particle width, particle height and particle thickness in the case of three-legged granulate particles are usually 4 to 6.5 mm, 4 to 6 mm and 2.5 to 7 mm.
  • the corresponding preferred values are 4.5 to 6 mm (A), 4.5 to 5.5 mm (B) and 3 to 6 mm (C).
  • the angle a between the legs 1 and 2 expediently moves between 100 and 140 °, preferably 110 and 130 °.
  • the ratio of (A) to (B) is 1: 0.6 to 1: 1.5, preferably 1: 0.75 to 1: 1.25, the ratio of (A) to (C ) 1: 0.4 to 1: 1.75 preferably 1: 0.5 to 1: 1.4 and the ratio (B) to (C) 1: 0.4 to 1: 1.75 preferably 1: 0, 6 to 1: 1.35.
  • the legs of the granulate particles according to the invention lie in one plane. Without departing from the scope of the invention, however, at least some of it can also have a slight curvature, for example in such a way that all the legs deviate from an imaginary plane in the same direction. In addition, in some particles individual legs can also be curved in opposite directions.
  • the angle of curvature (deviation from the plane) is a maximum of 20 °, preferably a maximum of 10 °.
  • thermoplastics for the particles according to the invention are the thermoplastics commonly used for packaging materials, such as e.g. Styrene polymers, polyolefins such as polyethylene, VC polymers and the like. Polystyrene is preferably used.
  • This foamable, blowing agent-containing, compact plastic granulate is produced in a known manner by melting the plastic in an extrusion press, metering in a suitable blowing agent under pressure into the plastic melt, pressing out the blowing agent-containing melt through a corresponding star-shaped (cloverleaf-like) mold opening and then granulating.
  • This mold opening is provided with mold cores (thorns), the shape and number of which corresponds to that of the desired omissions.
  • the strands emerging from the extrusion press are cooled rapidly, expediently by means of a water bath.
  • the length of the cheapest water bath route and the withdrawal speed of the strands can easily be determined for the person skilled in the art by means of a few routine tests.
  • the chilled strands are then cut perpendicularly to the take-off direction into particles of the thickness indicated above.
  • the strand temperature should expediently be chosen so that the proportion of dust and splinters when cutting is as low as possible.
  • the expandable particles so formed can be heated to above their softening point, e.g. by steam to be foamed into the packing material bodies according to the invention. This foaming is usually carried out only at the consumer.
  • a plastic blowing agent can be added to the plastic before the extrusion process. Water vapor, carbonic acid or nitrogen is split off, mixed in.
  • the packaging material obtained consists predominantly, preferably more than 90% and in particular more than 95% of particles of the form described above, i.e. in the form of a star-shaped particle with three, four, five or more, preferably three or six legs lying in one plane, each leg having at least one opening (a hole). Slight deviations from the flat shape are also possible here, as described for the granulate particles.
  • the wall thickness of the particles of the packaging material according to the invention is generally 8 to 20 mm, preferably 10 to 16 mm, the wall thickness generally being greatest in the center of the particle and falling towards the edge regions. Under certain circumstances, this drop can be up to 70%, in particular up to 50%.
  • the dimensions (A '), (B') and (C ') in the case of three-legged particles are usually 16 to 40 mm, 16 to 40 mm and 8 to 20 mm.
  • the corresponding preferred values are 20 to 38 mm (A '), 18 to 36 mm (B') and 10 to 18 mm (C ').
  • the angle a 'between the legs 2 and 4 (FIG. 3) expediently moves between 100 and 140 °, preferably 100 and 130 °.
  • the ratio of (A ') to (B') is 1: 0.4 to 1: 2.5, preferably 1: 0.5 to 1: 1.8, the ratio of (A ') to (C ') 1: 0.2 to 1: 1.25, preferably 1: 0.26 to 1: 0.9 and the ratio (B') to (C ') 1: 0.2 to 1: 1 , 25, preferably 1: 0.25 to 1: 1.
  • the dimensions, angles and proportions of the four-, five-, six- and multi-legged particles are quite appropriate.
  • the omissions in the packaging material particles are - corresponding to those in the granulate particles - preferably round, oval and / or lenticular and are preferably found on all legs or only the center preferably has an omission.
  • the area of this omission (s) is generally about 25% to about 75%, preferably 30% to 60%, based on the respective leg surfaces or on the total area.
  • the diameter or the largest clear width of this omission (s) is usually 3 to 15 mm, preferably 6 to 12 mm.
  • the center of the packaging material particles may also have an omission.
  • the size of the omissions in the packaging material particles, as also in the granulate particles is not critical and can assume values that are larger or smaller than the percentages given above, but then with certain disadvantages.
  • the surface of the packaging material particles contains a more or less large number of cracks (craters), which are caused by the escaping blowing agent.
  • the void volume of the unshaken bed of the packaging material according to the invention is generally more than 60%, preferably 60 to 90%, in particular 65 to 80%.
  • the star-shaped, omitted shape of the packing material body according to the invention not only forms a particularly large cavity volume of the bed, but also results in an elastic deformation behavior of the particles without permanent deformation or even destruction of the foam structure.
  • the packaging material according to the invention can contain the usual additives such as flame retardants, UV and heat stabilizers, dyes and external equipment in the usual amounts.
  • Figures 1 and 2 represent a foamable three-legged granulate in high magnification
  • Figures 3 to 5 relate to the particles of the packaging material according to the invention obtained by foaming
  • Figures 5 to 9 show other embodiments of foamed particles according to the invention.
  • Figure 1 which shows a front view of a granule particle (1) according to the invention
  • (2), (3) and (4) mean the three legs of the particle and (5) the omissions.
  • (A), (B) and (C) represent the dimensions of the particle in the three spatial directions.
  • a represents the angle between the two legs (3) and (4).
  • Figure 2 shows the particle (1) of Figure 1 in side view.
  • (C) means the wall thickness (cutting length).
  • FIG. 3 shows a particle (1 ') of the packaging material according to the invention, which was created by foaming the granulate particle (1) of FIG. 1.
  • (2 '), (3') and (4 ') again mean the three legs, (5') the omissions, while (A '), (B') and (C ') the dimensions of this particle in the three spatial directions express.
  • a ' represents an angle between the two legs (3') and (4 ').
  • Figure 4 shows the particle (1 ') of Figure 3 in section IV-IV.
  • (C ') means the thickness.
  • the packing behavior of foamed plastic particles is essentially determined by the bulk density, the void volume and the flowability.
  • the cylinder drop test provides an additional important statement.
  • the test funnel consisted of sheet metal with a smooth surface, had a slide in the outlet and had the following dimensions:
  • test funnel Such a test funnel is described, for example, in "Technical Delivery Conditions TL 8135-0032, Edition 2 (March 1982)", pp. 1 to 6 of the Federal Office of Defense Technology and Procurement of the Federal Republic of Germany.
  • the upper edge of the measuring cup was then wiped off with a ruler.
  • the net weight divided by 10 gave the bulk density of the unshaken bed in grams per liter.
  • the measuring cup described under 1) was filled with packaging particles in free fall with the aid of the test funnel also described under 1). During the filling process, the measuring cup was continuously pushed onto a solid surface at short intervals until no further volume contraction of the bed took place. The measuring cup was then wiped off with a ruler. The net weight divided by 10 gave the bulk density of the shaken bed in grams per liter.
  • the measuring cup above was filled with packaging particles as described under 1). After painting over the upper edge of the measuring cup with a ruler, the measuring cup was closed with a wire sieve. Then the measuring cup was immersed in water and rotated on all sides so that all the voids in the bed filled with water. The volume of water required to fill the cavities corresponded to the cavity volume of the unshaken bed.
  • Said measuring cup was, as listed under 2), filled and shaken to the tightest particle packing.
  • the measuring cup was then immersed in water and rotated on all sides so that all of the cavities were filled with water.
  • the volume of water required to fill the cavities corresponded to the cavity volume of the vibrated bed.
  • the cylinder hitting with the horizontal longitudinal axis only caused a short-term deformation of the packing material particle bed and then jumped back dampened from the level of the filling level.
  • the steel cylinder only slightly penetrated the bed the second time it hit the bed, but remained fixed in this position (Table 1, packing material 1).
  • the distance from the level of the filling level to the penetrated lower metal line of the steel cylinder is given as the penetration depth in cm.
  • Table 1 shows that the packaging material particles I according to the invention are superior to particles A in terms of bulk density, cavity volume, cylinder drop test, penetration depth and trickle time.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wrappers (AREA)
  • Buffer Packaging (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Packages (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Molding Of Porous Articles (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Laminated Bodies (AREA)
  • Cosmetics (AREA)
  • Sealing Material Composition (AREA)
EP86100880A 1985-01-30 1986-01-23 Aufschäumbares Kunststoffgranulat und daraus hergestelltes Packmaterial Expired - Lifetime EP0189843B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86100880T ATE56415T1 (de) 1985-01-30 1986-01-23 Aufschaeumbares kunststoffgranulat und daraus hergestelltes packmaterial.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3503057 1985-01-30
DE19853503057 DE3503057A1 (de) 1985-01-30 1985-01-30 Aufschaeumbares kunststoffgranulat und daraus hergestelltes packmaterial

Publications (3)

Publication Number Publication Date
EP0189843A2 EP0189843A2 (de) 1986-08-06
EP0189843A3 EP0189843A3 (en) 1988-01-13
EP0189843B1 true EP0189843B1 (de) 1990-09-12

Family

ID=6261155

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86100880A Expired - Lifetime EP0189843B1 (de) 1985-01-30 1986-01-23 Aufschäumbares Kunststoffgranulat und daraus hergestelltes Packmaterial

Country Status (8)

Country Link
US (1) US4621022A (da)
EP (1) EP0189843B1 (da)
JP (1) JPH074824B2 (da)
AT (1) ATE56415T1 (da)
CA (1) CA1282041C (da)
DE (2) DE3503057A1 (da)
DK (1) DK164587C (da)
ES (1) ES291980Y (da)

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US4824059A (en) * 1988-02-01 1989-04-25 Butler Les I Cushioning device for remote control television equipment, and assembly thereof
USRE33970E (en) * 1988-02-01 1992-06-23 Cushioning device for remote control television equipment, and assembly thereof
US5151312A (en) * 1990-10-18 1992-09-29 Boeri John L Hollow, non-nestable packing peanuts of recycled newspaper
USD329811S (en) 1991-02-11 1992-09-29 Tether Russell W Loose packing material
USD328568S (en) 1991-02-11 1992-08-11 Tether Russell W Loose packing material
USD328709S (en) 1991-02-11 1992-08-18 Tether Russell W Loose packing material
US5569519A (en) * 1991-03-13 1996-10-29 Enviro-Pac Inc. Loose fill packing element
US5186990A (en) * 1991-04-05 1993-02-16 Eagle Scientific Co. Biodegradable and water soluble packaging material
US5188880A (en) * 1991-12-11 1993-02-23 Tether Russell W Void fill material
US5254389A (en) * 1991-12-11 1993-10-19 Corropak, Inc. Void fill material
US5946994A (en) * 1991-12-11 1999-09-07 Corropak, Inc. Void fill material and process for manufacturing same
US5382325A (en) * 1992-01-13 1995-01-17 Envirocube, Inc. Method and apparatus for manufacturing dunnage material
US5312665A (en) * 1992-08-20 1994-05-17 Michelsen Packaging Company Biodegradable loose-fill packing material
US5288740A (en) * 1992-10-23 1994-02-22 The Dow Chemical Company Process for making alkenyl aromatic foam packing bodies with carbon dioxide and/or ethane blowing agent systems
CA2106421C (en) * 1992-12-10 1999-02-02 Gerry A. Hagen Mixed cross-section carpet yarn
US5486417A (en) * 1993-09-28 1996-01-23 Basf Corporation Mixed cross-section carpet yarn
US5322736A (en) * 1993-06-24 1994-06-21 Alliedsignal Inc. Hollow-trilobal cross-section filaments
TW294691B (en) * 1994-08-16 1997-01-01 Jsp Corp Expansion-molded article of polyolefin resin having open voids and production thereof
USD383066S (en) * 1995-05-22 1997-09-02 Free-Flow Packaging Corporation Loose fill packing material
US5701629A (en) * 1995-07-19 1997-12-30 Speciality Filaments, Inc. Hollow brush bristle with radiating spokes
US5900119A (en) * 1996-10-09 1999-05-04 E-Tech Products, Inc. Method of forming improved loose fill packing material from recycled paper
FR2786309B1 (fr) * 1998-11-23 2001-01-26 Transp S De L Ind Nucleaire Tr Dispositif amortisseur de chocs pour conteneurs de matieres radioactives
US6632525B1 (en) * 2000-10-11 2003-10-14 Textron Automotive Company, Inc. Material and method for manufacturing plastic parts
US20030236219A1 (en) * 2002-06-21 2003-12-25 Nightingale Stephen D. Edible product markers and methods for making and using edible product markers
CA2488797C (en) * 2002-06-21 2011-04-19 Stephen D. Nightingale Multi-functional product markers and methods for making and using the same
US7654391B2 (en) * 2005-06-09 2010-02-02 Langer Associates, Inc. Readily configurable plastic foam packaging
USD551979S1 (en) * 2005-10-17 2007-10-02 Richard Daniels Star-shaped loose fill packing material
US9943679B2 (en) * 2011-01-28 2018-04-17 Johan-Christoph Geller Stopcock on a catheter-like or a sheath-like medical installation
US20170340131A1 (en) * 2016-05-24 2017-11-30 Healthcare Co., Ltd Foam filling elements
US10810988B2 (en) * 2017-12-01 2020-10-20 Spirit Aerosystems, Inc. Acoustic panel employing rounded particles in septum layer and system and method for making same
KR102477119B1 (ko) * 2020-07-09 2022-12-13 홍성권 쿠션부재용 충전재
US12358707B2 (en) * 2023-11-01 2025-07-15 TradeHost Inc. Interlocking container insert

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US3400037A (en) * 1964-11-13 1968-09-03 Alta Ind Method of manufacturing cellular packing materials
US3855053A (en) * 1972-01-31 1974-12-17 Free Flow Packaging Corp Improved packing material
US3961000A (en) * 1972-11-28 1976-06-01 Altainer Incorporated Method of manufacturing a nesting or interlocking loose-fill cellular packing material
DE2848338A1 (de) * 1978-11-08 1980-05-22 Hoechst Ag Freifliessendes packmaterial aus aufgeschaeumtem kunststoff
US4500586A (en) * 1981-01-29 1985-02-19 Bussey Harry Jun Billowed filling elements for packaging
JPS59115264A (ja) * 1982-12-14 1984-07-03 三菱電機株式会社 包装用緩衝体
DE3435440A1 (de) * 1983-12-10 1985-06-20 Hoechst Ag, 6230 Frankfurt Aufschaeumbares kunststoffgranulat und daraus hergestelltes packmaterial

Also Published As

Publication number Publication date
DK43986A (da) 1986-07-31
DK164587B (da) 1992-07-20
DE3503057A1 (de) 1986-07-31
EP0189843A2 (de) 1986-08-06
DK164587C (da) 1992-12-07
JPS61175024A (ja) 1986-08-06
CA1282041C (en) 1991-03-26
EP0189843A3 (en) 1988-01-13
DE3674012D1 (de) 1990-10-18
ATE56415T1 (de) 1990-09-15
ES291980U (es) 1986-05-16
JPH074824B2 (ja) 1995-01-25
US4621022A (en) 1986-11-04
DK43986D0 (da) 1986-01-29
ES291980Y (es) 1987-01-16

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