Nothing Special   »   [go: up one dir, main page]

WO1993016947A1 - Plastic core tube having ring-shaped corrugations - Google Patents

Plastic core tube having ring-shaped corrugations Download PDF

Info

Publication number
WO1993016947A1
WO1993016947A1 PCT/LU1993/000001 LU9300001W WO9316947A1 WO 1993016947 A1 WO1993016947 A1 WO 1993016947A1 LU 9300001 W LU9300001 W LU 9300001W WO 9316947 A1 WO9316947 A1 WO 9316947A1
Authority
WO
WIPO (PCT)
Prior art keywords
tube
plastic
mandrel
cardboard
ring
Prior art date
Application number
PCT/LU1993/000001
Other languages
French (fr)
Inventor
Stephen Kleykamp
Patric Michelis
Original Assignee
Stephen Kleykamp
Patric Michelis
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 Stephen Kleykamp, Patric Michelis filed Critical Stephen Kleykamp
Publication of WO1993016947A1 publication Critical patent/WO1993016947A1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00—Rigid pipes
    • F16L9/12—Rigid pipes of plastics with or without reinforcement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/04—Kinds or types
    • B65H75/08—Kinds or types of circular or polygonal cross-section
    • B65H75/10—Kinds or types of circular or polygonal cross-section without flanges, e.g. cop tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/50—Storage means for webs, tapes, or filamentary material
    • B65H2701/51—Cores or reels characterised by the material
    • B65H2701/512—Cores or reels characterised by the material moulded
    • B65H2701/5122—Plastics

Definitions

  • Sketch I shows the cross section of this corrugated mandrel (1) which consists of a corrugated tube (2) (either double skin or single skin) and a smooth tube outside (3) .
  • the inner corrugated tube brings lightness and rigidity which give the new plastic mandrel its resistance to crushing during the winding of materials on the mandrel itself.
  • the outer tube acts as a skin and forms a smooth surface between the corrugated tube and the material to be wound.
  • the mandrels which are currently used in the packaging industry are currently produced from cardboard or plastic, but both solutions present environmental problems or else cost too high.
  • the cardboard cores that currently exist are produced by successively winding several layers of glued paper strips. Before these layers of paper overlap, they are wound spirally on top of each other. This paper core is probably the most popular solution in the packaging industry, since the paper raw material is the least expensive and the resulting finished product is rigid enough to make a core with a center strong enough to later roll up the required material on top.
  • Cardboard cores present technical and environmental problems. Due to the rigidity of the glued cardboard, the edges of the mandrel are easily damaged during handling. In addition, the cores must be stored in places where the humidity is constantly controllable, because the dimensions of the cardboard core can fluctuate due to the change in humidity. These two problems cause a big fall for the consumer who is forced to abandon a good part of his mandrels before being able to use them for the winding of his products.
  • Damaged cardboard cores may cause environmental problems.
  • Most of the glues used to fix the layers of paper are not soluble in water, which means that these cardboard cores are practically not recyclable. Even soluble adhesives can destroy the cardboard which makes re-using the cardboard very difficult.
  • Plastic mandrels are manufactured using known techniques for extruding plastic pipes.
  • a plastic mandrel has fewer technical problems than that of cardboard and from an environmental point of view it is possible to use a raw material, such as polyethylene, polypropylene or other plastic materials which can be easily recycled.
  • the plastic mandrels cannot be damaged at the edges thanks to the advantage of the elasticity of the plastic vis-à-vis the stiffness of the cardboard. So they can better absorb the blows during handling.
  • Most of the existing plastic mandrels show only a slight or even no change in size caused by the change in humidity.
  • Plastic cores can be stored outside with the advantage of limiting storage costs, while cardboard cores must be stored indoors.
  • plastic mandrels compared to cardboard mandrels allow them to be reused several times or to be recycled into plastic granules for the manufacture of other products.
  • plastic cores currently used have yet another great disadvantage vis-à-vis cardboard cores: the cost.
  • Typical plastic cores are more expensive than cardboard cores because plastic is normally a more expensive raw material than cardboard.
  • the plastic cores currently used must be very thick to withstand the weight of the product to be wound on the mandrel.
  • the unique combination of the corrugated tube with the smooth tube, which brings us to the plastic corrugated mandrel solves the problem of the cost of the ordinary mandrel vis-à-vis the cardboard mandrel.
  • the corrugated mandrel weighs and costs about half of an ordinary plastic mandrel made entirely of plastic. This means that a plastic mandrel retains all the advantages of an ordinary plastic mandrel compared to a cardboard mandrel and, in addition, the lightness of the finished product leads to a cost similar to that of the cardboard mandrel.
  • the ringed tube is known to be light, but also solid, thanks to its ringed shape: an ordinary tube should be twice as heavy as the ringed tube to have the same rigidity.
  • the skin on the outside can be a smooth tube, made separately from the corrugated tube and subsequently joined together to have a corrugated mandrel.
  • the two components, without interior and smooth exterior, could be manufactured with special equipment allowing the production in a simultaneous and continuous way.
  • the purpose of this patent application is to describe the corrugated mandrel, regardless of the choice of production method and regardless of the type of plastic. Corrugated and smooth walls can be made thick or thin and in any diameter required. With this text we do not intend to highlight the different profiles.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
  • Storage Of Web-Like Or Filamentary Materials (AREA)

Abstract

A core tube comprising a combination of a smooth outer tube, a second tube with ring-shaped corrugations arranged inside the first tube, and optionally a further smooth tube inside the second tube. Both or all three tubes are made of plastic extruded in one or more steps, and together provide the core tube with the required solidity and mechanical strength while minimizing its weight and cost.

Description

i fi f
Titre: MANDRINS ANNELES EN PLASTIQUETitle: ANNEL PLASTIC CHUCKS
Le texte ci- après décrit un nouveau mandrin en plastique qui pourrait remplacer le mandrin existant actuellement au marché qui est à base de carton ou de plastique.The following text describes a new plastic mandrel which could replace the existing mandrel on the market which is based on cardboard or plastic.
L'esquisse I montre la coupe transversale de ce mandrin annelé (1) qui se compose d'un tube annelé (2) (soit en peau double ou bien en peau simple) et d'un tube lisse à l'extérieur (3).Sketch I shows the cross section of this corrugated mandrel (1) which consists of a corrugated tube (2) (either double skin or single skin) and a smooth tube outside (3) .
Le tube annelé à l' intérieur amène la légèreté et la rigidité qui donnent au nouveau mandrin en plastique sa résistance à l' écrasement lors de l'enroulement de matières sur le mandrin lui-même. Le tube d' extérieur agit comme peau et constitue une surface lisse entre le tube annelé et la matière à enrouler.The inner corrugated tube brings lightness and rigidity which give the new plastic mandrel its resistance to crushing during the winding of materials on the mandrel itself. The outer tube acts as a skin and forms a smooth surface between the corrugated tube and the material to be wound.
TECHNOLOGIE EXISTANTEEXISTING TECHNOLOGY
Les mandrins qui sont employés actuellement dans 7' industrie de l'emballage sont produits actuellement à base de carton ou de plastique, mais les deux solutions présentent des problêmes d' environnement ou bien de coût trop élevé. 1) Mandrins en carton. Les mandrins en carton qui existent actuellement sont produits par un enroulement successif de plusieurs couches de bandes en papier collé. Avant que ces couches de papier s' entrecollent, elles sont enroulées spira l ement l' une sur l' autre. Ce mandrin en papier est probablement la solution la plus populaire dans V industrie de V emba llage, étant donné que la matière première du papier est la moins coûteuse et que le produit fini qui en résulte est assez rigide pour la confection d' un mandrin avec un centre assez solide pour enrouler ultérieurement la matière requise en dessus.The mandrels which are currently used in the packaging industry are currently produced from cardboard or plastic, but both solutions present environmental problems or else cost too high. 1) Cardboard cores. The cardboard cores that currently exist are produced by successively winding several layers of glued paper strips. Before these layers of paper overlap, they are wound spirally on top of each other. This paper core is probably the most popular solution in the packaging industry, since the paper raw material is the least expensive and the resulting finished product is rigid enough to make a core with a center strong enough to later roll up the required material on top.
Désavantages du mandrin en carton:Disadvantages of the cardboard core:
Les mandrins en carton présentent des problêmes techniques et d' environnement. A cause de la rigidité du carton collé, les bords du mandrin s' endommagent facilement lors de la manutention. En outre les mandrins doivent être stockés sur des lieux où l' humidité est contrôlable en permanence, car les dimensions du mandrin en carton peuvent fluctuer par le changement de l' humidité. Ces deux problèmes provoquent une haute chute pour le consommateur qui se voit forcé d' abandonner une bonne partie des ses mandrins avant de pouvoir les utiliser pour l' enroulement de ses produits.Cardboard cores present technical and environmental problems. Due to the rigidity of the glued cardboard, the edges of the mandrel are easily damaged during handling. In addition, the cores must be stored in places where the humidity is constantly controllable, because the dimensions of the cardboard core can fluctuate due to the change in humidity. These two problems cause a big fall for the consumer who is forced to abandon a good part of his mandrels before being able to use them for the winding of his products.
Les mandrins en carton abîmés, ainsi que ceux re jetés par Je consommateur fina l après l' utilisation, peuvent causer des problèmes d' environnement. La plupart des colles utilisées pour fixer les couches de papier ne sont pas solubles dans l' eau, ce qui entraîne que ces mandrins en carton ne sont pratiquement pas récyclables. Même les colles solubles peuvent détruire le carton ce qui rend une rêutilsation du carton très difficile.Damaged cardboard cores, as well as those discarded by the consumer after use, may cause environmental problems. Most of the glues used to fix the layers of paper are not soluble in water, which means that these cardboard cores are practically not recyclable. Even soluble adhesives can destroy the cardboard which makes re-using the cardboard very difficult.
Ces problêmes au point de vue technique et d' environnement pourra ient être réso lus par l' util isation du mandrin en plastique.These technical and environmental problems can be solved by using the plastic mandrel.
2) Mandrins en plastique. Les mandrins en plastique sont fabriqués suivant les techniques connues de T extrusion des tuyaux en plastique. Un mandrin en plastique a moins de problèmes techniques que celui en carton et au point de vue d' environnement on peut utiliser une matière première, telle que le polyëthylène, le polypropylëne ou bien d' autres matières en plastique qui pourront être recyclées facilement. Par l'utilisation du plastique, les mandrins en plastique ne pourront être endommagés aux bords grâce à l'avantage de l'élastic i té du plast ique v is- à- v is de la r ig id i té du carton. Ainsi ils peuvent mieux absorber les coups lors de la manutention. La plupart des mandrins en plastique existant actuellement, ne montrent qu'une faible ou bien même pas de modification de la dimension provoquée par le changement de l'humidité. Les mandrins en plastique peuvent être stockés à l'extérieur avec l'avantage de limiter les frais de stockage, tandis que les mandrins en carton doivent être stockés à V intérieur.2) Plastic mandrels. Plastic mandrels are manufactured using known techniques for extruding plastic pipes. A plastic mandrel has fewer technical problems than that of cardboard and from an environmental point of view it is possible to use a raw material, such as polyethylene, polypropylene or other plastic materials which can be easily recycled. By the use of plastic, the plastic mandrels cannot be damaged at the edges thanks to the advantage of the elasticity of the plastic vis-à-vis the stiffness of the cardboard. So they can better absorb the blows during handling. Most of the existing plastic mandrels show only a slight or even no change in size caused by the change in humidity. Plastic cores can be stored outside with the advantage of limiting storage costs, while cardboard cores must be stored indoors.
Ces avantages techniques des mandrins en plastique vis- à-vis des mandrins en carton permettent de les réutiliser plusieurs fois ou de les recycler en granulés en plastique pour la fabrication d'autres produits.These technical advantages of plastic mandrels compared to cardboard mandrels allow them to be reused several times or to be recycled into plastic granules for the manufacture of other products.
Les mandrins en plastique utilisés actuellement ont encore un autre grand désavantage vis-à-vis des mandrins en carton: le coût. Les mandrins typiques en plastique sont plus chers que les mandrins en carton parce que le plastique est normalement une matière première plus chère que le carton.The plastic cores currently used have yet another great disadvantage vis-à-vis cardboard cores: the cost. Typical plastic cores are more expensive than cardboard cores because plastic is normally a more expensive raw material than cardboard.
Pour répondre aux mêmes exigences des mandrins en carton, les mandrins en plastique utilisés actuellement doivent être très épais pour résister au poids du produit à enrouler sur le mandrin.To meet the same requirements for cardboard cores, the plastic cores currently used must be very thick to withstand the weight of the product to be wound on the mandrel.
L'unique combinaison du tube annelé avec le tube lisse, qui nous amène au mandrin annelé en plastique rêsoud le problème du coût du mandrin ordinaire vis-à-vis du mandrin en carton. Le mandrin annelé pèse et coûte environ la moitié d'un mandrin en plastique ordinaire fabriqué entièrement en plastique. Cela veut dire qu'un mandrin en plastique retient tous les avantages d'un mandrin en plastique ordinaire comparé à un mandrin en carton et, en plus, la légèreté du produit fini amène à un coût semblable à celui du mandrin en carton.The unique combination of the corrugated tube with the smooth tube, which brings us to the plastic corrugated mandrel solves the problem of the cost of the ordinary mandrel vis-à-vis the cardboard mandrel. The corrugated mandrel weighs and costs about half of an ordinary plastic mandrel made entirely of plastic. This means that a plastic mandrel retains all the advantages of an ordinary plastic mandrel compared to a cardboard mandrel and, in addition, the lightness of the finished product leads to a cost similar to that of the cardboard mandrel.
Bien que le tube annelé simple paroi ou double paroi et le tube lisse sont des produits connus et en usage depuis beaucoup d'années, c'est cette seule combinaison des deux produits connus qui pourrait être patentée. Le tube annelé est reconnu pour être léger, mais aussi solide, grâce à sa forme annelêe : un tube ordinaire devrait être deux fois plus lourd que le tube annelé pour avoir la même rigidité. La peau de l' extérieur peut être un tube lisse, fabriqué séparément du tube annelé et joint ultérieurement ensemble pour avoir un mandrin annelé. Les deux composants, an ne lés ë l' intérieur et lisses à l' extérieur pourraient être fabriqués avec un équipement spécia l permettant la production d' une façon simultanée et continuelle. Le but de cette demande de brevet est la description du mandrin annelé, indépendamment du choix de la manière de production et indépendamment du type de plastique. Les parois annelées et lisses peuvent être fabriquées épa isses ou minces et dans n' importe quel diamètre demandé. Avec ce texte nous n' avons pas intention de mettre en évidence les différents profils. Although the single wall or double wall corrugated tube and the smooth tube are known products and in use for many years, it is this only combination of the two known products which could be patented. The ringed tube is known to be light, but also solid, thanks to its ringed shape: an ordinary tube should be twice as heavy as the ringed tube to have the same rigidity. The skin on the outside can be a smooth tube, made separately from the corrugated tube and subsequently joined together to have a corrugated mandrel. The two components, without interior and smooth exterior, could be manufactured with special equipment allowing the production in a simultaneous and continuous way. The purpose of this patent application is to describe the corrugated mandrel, regardless of the choice of production method and regardless of the type of plastic. Corrugated and smooth walls can be made thick or thin and in any diameter required. With this text we do not intend to highlight the different profiles.

Claims

- -- -
REVENDICATIONS
Mandrin caractérisé par le fait qu' il est composé par la combinaison d'un tube externe lisse, d'un second tube annelé interne au premier et éventuellement d'un autre tube lisse interne au second, tous deux ou trois en plastique extrudes en une seule opération ou non, le tout procurant au mandrin la solidité et la résistance mécanique nécessaire tout en assurant un poids et un coût de revient minimal. Mandrel characterized in that it is composed by the combination of a smooth outer tube, a second internal corrugated tube on the first and possibly another smooth inner tube on the second, both or three of plastic extruded in one single operation or not, all providing the mandrel with the solidity and mechanical strength necessary while ensuring minimum weight and cost.
PCT/LU1993/000001 1992-02-24 1993-02-24 Plastic core tube having ring-shaped corrugations WO1993016947A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU88074 1992-02-24
LU88074A LU88074A1 (en) 1992-02-24 1992-02-24 ANNUAL PLASTIC CHUCKS

Publications (1)

Publication Number Publication Date
WO1993016947A1 true WO1993016947A1 (en) 1993-09-02

Family

ID=19731343

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/LU1993/000001 WO1993016947A1 (en) 1992-02-24 1993-02-24 Plastic core tube having ring-shaped corrugations

Country Status (2)

Country Link
LU (1) LU88074A1 (en)
WO (1) WO1993016947A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7255299B2 (en) * 2004-08-19 2007-08-14 Braun Elaine A Fabric storage panel
DE102008025580A1 (en) * 2008-05-28 2009-12-03 Tesa Se Winding core for producing wound adhesive tape, has compression layer formed in carrier and provided with wave-shaped cross-section, where outer region of carrier is joined to upper side of compression layer
ITMI20101139A1 (en) * 2010-06-23 2011-12-24 Colines Spa TUBULAR SUPPORT FOR THE WINDING OF MATERIAL IN THE SHEET
WO2011154745A3 (en) * 2010-06-11 2012-02-23 Composite Core Technologies Ltd Web-winding core
US9212021B2 (en) 2008-02-04 2015-12-15 Sonoco Development, Inc. Winding cores for material rolls having high roll strain energy, and method for making same

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1794131U (en) * 1959-05-13 1959-08-20 Presswerk Wessel & Co K G ATTACHMENT BRUSH MADE OF THERMOPLASTIC PLASTIC, ESPECIALLY FOR COMBYED PREPARATION ETC.
US3464450A (en) * 1966-02-07 1969-09-02 Francesco Steffenini Double-walled tubular body and devices for making same
GB1177962A (en) * 1966-02-07 1970-01-14 Francesco Steffenini A Tubular Body, particularly for Supporting Yarns
FR2300836A1 (en) * 1975-02-15 1976-09-10 Engel Adalbert TUBE FOR THE TEXTILE INDUSTRY
US4377545A (en) * 1981-06-16 1983-03-22 Borg-Warner Chemicals, Inc. Method of making corrugated reinforced thermoplastic pipe

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1794131U (en) * 1959-05-13 1959-08-20 Presswerk Wessel & Co K G ATTACHMENT BRUSH MADE OF THERMOPLASTIC PLASTIC, ESPECIALLY FOR COMBYED PREPARATION ETC.
US3464450A (en) * 1966-02-07 1969-09-02 Francesco Steffenini Double-walled tubular body and devices for making same
GB1177962A (en) * 1966-02-07 1970-01-14 Francesco Steffenini A Tubular Body, particularly for Supporting Yarns
FR2300836A1 (en) * 1975-02-15 1976-09-10 Engel Adalbert TUBE FOR THE TEXTILE INDUSTRY
US4377545A (en) * 1981-06-16 1983-03-22 Borg-Warner Chemicals, Inc. Method of making corrugated reinforced thermoplastic pipe

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7255299B2 (en) * 2004-08-19 2007-08-14 Braun Elaine A Fabric storage panel
US9212021B2 (en) 2008-02-04 2015-12-15 Sonoco Development, Inc. Winding cores for material rolls having high roll strain energy, and method for making same
DE102008025580A1 (en) * 2008-05-28 2009-12-03 Tesa Se Winding core for producing wound adhesive tape, has compression layer formed in carrier and provided with wave-shaped cross-section, where outer region of carrier is joined to upper side of compression layer
WO2011154745A3 (en) * 2010-06-11 2012-02-23 Composite Core Technologies Ltd Web-winding core
ITMI20101139A1 (en) * 2010-06-23 2011-12-24 Colines Spa TUBULAR SUPPORT FOR THE WINDING OF MATERIAL IN THE SHEET
WO2011160763A1 (en) * 2010-06-23 2011-12-29 Colines S.P.A. Perfected tubular support for the winding of material in sheets and method for its production

Also Published As

Publication number Publication date
LU88074A1 (en) 1992-08-25

Similar Documents

Publication Publication Date Title
EP0025121B1 (en) Plastic tube obtained by helicoidal winding of a profile
DE3326369C2 (en) Thermoformed conical plastic container
CH700759B1 (en) Combined packaging containers as well as methods for its production.
DE2932375A1 (en) METHOD FOR PRODUCING A PACKAGING CONTAINER FROM PLASTIC
WO1993016947A1 (en) Plastic core tube having ring-shaped corrugations
US4490063A (en) Telescopic tube and method for the manufacture thereof
CA2619821A1 (en) Device for closing a container neck, container equipped with same and method for making same
EP1397248A1 (en) Protected plastic tube and method for making same
KR101900317B1 (en) Manufacturing Method for Plastic Pipe with Double Wall Structure and Manufacturing Apparatus for Plastic Pipe with Double Wall Structure and
US4928734A (en) Reinforced strip and flexible hoses produced therewith
KR20150145810A (en) Safety profile of multi-walled sewer bonding
CN210318875U (en) Reinforced porous winding composite pipe
KR101857097B1 (en) Plastic Pipe with Multiple Wall Structure
US20150276095A1 (en) Multi-section length of pipe and associated methods for making the same
KR890005307B1 (en) Corrugated pipe with plastic flange and its method
US2906180A (en) Process for the manufacture of containers
KR890005306B1 (en) Corrugated pipe with plastic flange and its method
EP0808277B1 (en) Extensible and compressible hollow element
CN202118396U (en) Reinforced PVC-U (unplasticized polyvinyl chloride) double-wall corrugated pipe
FR2634856A1 (en) Concrete pipe
KR200336646Y1 (en) Double wall corrugated pipe layered with recycled materials
BE1003596A3 (en) Reel in plastic.
AU2004215196A1 (en) Hollow profile used in the manufacture of a pipe
KR101857095B1 (en) Plastic Pipe with Double Wall Structure
FR2744102A1 (en) Stackable storage frame of particulate foam

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): JP US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LU MC NL PT SE

122 Ep: pct application non-entry in european phase