EP0545277A1 - Corps d'emballage et son utilisation - Google Patents

Corps d'emballage et son utilisation Download PDF

Info

Publication number
EP0545277A1
EP0545277A1 EP92120160A EP92120160A EP0545277A1 EP 0545277 A1 EP0545277 A1 EP 0545277A1 EP 92120160 A EP92120160 A EP 92120160A EP 92120160 A EP92120160 A EP 92120160A EP 0545277 A1 EP0545277 A1 EP 0545277A1
Authority
EP
European Patent Office
Prior art keywords
packaging body
body according
transparent
packaging
amylose
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.)
Withdrawn
Application number
EP92120160A
Other languages
German (de)
English (en)
Inventor
Peter Dr.Sc.Tech.Dipl.-Chem. Meier
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.)
Inventa AG fuer Forschung und Patentverwertung
Uhde Inventa Fischer AG
Original Assignee
EMS Inventa AG
Inventa AG fuer Forschung und Patentverwertung
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 EMS Inventa AG, Inventa AG fuer Forschung und Patentverwertung filed Critical EMS Inventa AG
Publication of EP0545277A1 publication Critical patent/EP0545277A1/fr
Withdrawn legal-status Critical Current

Links

Images

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
    • B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D65/38—Packaging materials of special type or form
    • B65D65/46—Applications of disintegrable, dissolvable or edible materials
    • 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
    • B65D2565/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D2565/38—Packaging materials of special type or form
    • B65D2565/381—Details of packaging materials of special type or form
    • B65D2565/385—Details of packaging materials of special type or form especially suited for or with means facilitating recycling

Definitions

  • the invention relates to the subject matter specified in the claims.
  • the invention relates in particular to packaging bodies made from cardboard and paper products provided with transparent parts, the transparent parts being able to be destroyed or dissolved in water after use of the packaging and the pulp / wood pulp part being able to be fed to a waste paper processing plant.
  • the loosened transparent parts can be easily disposed of in municipal wastewater treatment plants.
  • transparent parts made of biodegradable amylose-containing molding compounds can be used.
  • the invention further relates to the use of this packaging body made of at least one transparent part and non-transparent part as a recyclable packaging material.
  • Cardboard and paper products with transparent parts have had a firm place in the packaging sector for decades and have proven their worth.
  • Representatives of this type of packaging are e.g. Folding boxes with transparent windows, blister packs that are glued to the back of the cardboard, and letter envelopes that have transparent windows for the letter address.
  • transparent plastic films made of polyvinyl chloride, polyester, polyethylene, polypropylene, polystyrene, cellophane etc. have been used as transparent windows. These previously used transparent synthetic foils are glued into the cardboard and paper sleeves. Mainly water-insoluble synthetic adhesives, for example based on isocyanates, are used for this.
  • the packaging materials After the packaging materials have been used, they can no longer be reused, since the foils disrupt the process sequences in the waste paper preparation systems by clogging the screens or these process sequences are no longer possible. Manual, upstream separation of the films is far too complex, so that the packaging in question has so far only been disposed of by incineration and landfill can be.
  • the problem underlying the invention is to replace the previously used plastic windows in the widespread packaging materials, consisting of paper and cardboard products, provided with transparent windows, with novel, water-destructible or water-soluble, biodegradable windows, which at the reprocessing of the packaging can be removed without any problems, so that the wood pulp / pulp content can in turn be used in waste paper processing plants.
  • the invention is based on the finding that, surprisingly, based on amylose-containing molding compositions, water-soluble or water-destructible, biodegradable films can be produced which are suitable for use as transparent windows in cardboard and paper packaging.
  • the film or the transparent part produced from a thermoplastic molding compound by extrusion or coextrusion is also shrinkable and thermoformable and can be used in blister packs.
  • amylose and / or starches containing high amylose which have an amylose content of at least 50% by weight, in particular from 65 to 95% by weight, and their derivatives, on conventional thermoplastic systems, which can be designed as blown films or flat films.
  • amylose-containing molding compositions with additions of preferably aliphatic polyamides and copolyamides, the transparency (single-phase) of the films being retained.
  • the films are no longer completely soluble in water, but can be destroyed in water, ie the films are brought into a water-dispersible state in which the amylose-containing fraction dissolves in water and the polymer fraction is dispersed in the form of very fine particles.
  • a packaging body consisting of at least one transparent part and a non-transparent part, which is recyclable and the transparent part is water-destructible or water-soluble, biodegradable and made from a film made of a thermoplastic, amylose-containing molding compound by extrusion or coextrusion and the non-transparent part made of cardboard or paper is made.
  • the molding composition can contain additives which are selected from the group consisting of plasticizers, urea, urea derivatives, emulsifiers, lubricants and release agents.
  • the emulsifiers have a hydrophile-lipophile balance (HLB) value from 0 to 20, e.g. Stearates, polyoxyethylene 20 sorbitan monolaurate or polyethylene (20) sorbitan monopalmitate.
  • HLB hydrophile-lipophile balance
  • the packaging body according to the invention with a transparent part consists of a water-destructible and biodegradable film made of a molding compound which is a mixture of at least one non-modified and / or at least one modified, preferably chemically modified starch and / or at least one -modified and / or at least one modified, preferably chemically modified amylose and at least one selected, preferably aliphatic polymer with a melting or softening point of 50 to 200 ° C, preferably 60 to 180 ° C.
  • the proportion of the polymer (s) which is (are) preferably selected from the group of polyesters, copolyesters, polyamides, copolyamides, polyolefins, copolyolefins, polyvinyl alcohol, ethylene oxide copolymers, propylene oxide copolymers, vinyl alcohol copolymers, pullulan and gelatin is based 0.1 to 90 parts by weight, preferably 20 to 60 parts by weight, particularly preferably 20 to 40 parts by weight, of the total mixture.
  • the transparent windows containing amylose or starch can be inserted into the packaging or envelopes according to the invention by means of the corresponding systems for plastic windows, the windows being advantageously glued in with water, starch glue or other water-soluble adhesives.
  • the used packaging according to the invention is comminuted in a chopping plant, for example a cutting mill, and expediently soaked overnight in water which has an alkaline pH, in particular from 8 to 10.5, particularly preferably from 9.0 to 10.0. Increasing the water temperature to 60 to 80 ° C accelerates and shortens the release process for the transparent films.
  • the chips from the cardboard boxes and transparent windows according to the invention can optionally be suspended in water with energy-intensive stirring, preferably in a pulper or fiberizer, and treated intensively mechanically for 10 to 30 minutes, the transparent windows dissolving.
  • the transparent windows consist of an amylose and / or starch-polymer mixture
  • Bactosol MTN from Sandoz and a wetting agent, for example Sandopan LFW from Sandoz, are suitable for this purpose.
  • the fibers are separated from the water containing amylose and / or starch by sieving, the wastewater being able to be disposed of biologically via a sewage treatment plant and the remaining fibers being able to be reused for paper production.
  • heating zone 1 In the feed area (heating zone 1) of a co-rotating, tightly intermeshing twin-screw extruder with a screw geometry according to FIG. 1 and a screw length-diameter ratio of 41, 70 parts by weight of hydroxypropyl corn starch with a degree of substitution of 0.06 and an amylose content of 50 parts by weight were % and 12.8% by weight of sorbitol were metered in separately at point 7 of FIG. 1, mixed and conveyed simultaneously in the extruder. 0.2% by weight of magnesium stearate was dissolved in 2% by weight of urea at 60 ° C. in 15% by weight of glycerol.
  • This pre-homogenized plasticizer-emulsifier-additive mixture was metered into the extruder (heating zone 2) at point 8 of FIG. 1, then mixed and conveyed simultaneously in the extruder.
  • the starch melt was degassed by applying a negative pressure at point 9 of FIG. 1 (heating zone 4).
  • the homogeneous, thermoplastically processable starch melt in the heating zone (6) was extruded through a nozzle as a strand with little strand expansion (nozzle: 3 mm, strand: 4 mm), cooled and granulated.
  • 70 parts by weight of the starch molding composition I from Example 1a) or 1b) were mixed with 30 parts by weight of a selected copolyamide: copolyamide 6 / 6.9 (Grilon CF 62 BSE from Ems-Chemie AG) and into the metering zone of a twin-screw extruder ZSK -30 (Werner Pfleiderer) dosed with 6 heating zones.
  • the speed and the throughput were 100 revolutions ⁇ 1 and 8 to 10 kg / hour.
  • Films made from starch molding compound I or II were produced on a state-of-the-art system for blown and flat film production.
  • the films obtained were processed into transparent windows, ie cut to the appropriate size, and then inserted into the envelopes or packaging according to the invention by means of the corresponding systems for plastic windows, the gluing being carried out using water, starch glue or a water-soluble adhesive.
  • Reprocessing of mixed packaging waste for tools, screws and nails consisting of the back of the cardboard and the transparent, thermoformed transparent front, which was made from a flat film of granules with the following composition: 70% propoxylated high amylose corn starch with an amylose content of 85% and a degree of propoxylation of 0.12 15% glycerol 13% sorbitol 2% urea.
  • This example shows the reprocessing of packaging materials according to the invention for sanitary fittings, made from cardboard boxes and transparent windows, consisting of transparent, cold water-resistant polyamide starch blown films, which was produced from a granulate of the composition below: 40% copolyamide 6 / 6.9 (Grilon XE 3222 from Ems-Chemie) 60% starch molding composition according to the composition from Example 2.
  • the slurry of the packaging materials was transferred to a fiberizer and treated for 10 minutes.
  • the fibers were then dewatered through a filter screen and fed to the production of cardboard.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wrappers (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Biological Depolymerization Polymers (AREA)
EP92120160A 1991-11-29 1992-11-26 Corps d'emballage et son utilisation Withdrawn EP0545277A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4139467 1991-11-29
DE19914139467 DE4139467A1 (de) 1991-11-29 1991-11-29 Verpackungskoerper sowie verwendung desselben

Publications (1)

Publication Number Publication Date
EP0545277A1 true EP0545277A1 (fr) 1993-06-09

Family

ID=6445946

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92120160A Withdrawn EP0545277A1 (fr) 1991-11-29 1992-11-26 Corps d'emballage et son utilisation

Country Status (4)

Country Link
EP (1) EP0545277A1 (fr)
JP (1) JPH05213363A (fr)
AU (1) AU2966492A (fr)
DE (1) DE4139467A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9318666U1 (de) * 1993-12-07 1994-01-27 V F A S R L Verpackungsbeutel für Bau- und Bauzusatzstoffe
FR2722901A1 (fr) * 1994-07-21 1996-01-26 C2L Gestion Systeme standard garanti d'identification, de lecture, de comprehension et d'exploitation du code postal
WO2004113192A1 (fr) * 2003-06-20 2004-12-29 Plantic Technologies Ltd Plaquette alveolaire hydrosoluble d'ouverture facile
DE102012006760A1 (de) * 2011-12-19 2013-06-20 Inoviscoat Gmbh Biopolymer-basierte Blisterverpackung
WO2022229661A1 (fr) 2021-04-29 2022-11-03 Dm Flexibles Ltd Produits stratifiés et leurs procédés de production

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19706642A1 (de) * 1997-02-20 1998-08-27 Apack Verpackungen Gmbh Verfahren zur Herstellung eines Formkörpers aus biologisch abbaubarem Material
EP4228889A1 (fr) 2020-10-13 2023-08-23 Packaging Aids Corporation Sac thermoscellable recyclable en papier

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2125490A1 (fr) * 1971-02-15 1972-09-29 Hayashibara Ken
US4863655A (en) * 1988-12-30 1989-09-05 National Starch And Chemical Corporation Biodegradable packaging material and the method of preparation thereof
EP0375831A1 (fr) * 1988-12-30 1990-07-04 National Starch and Chemical Corporation Produits façonnés qui sont biodégradables et procédé pour leur préparation
EP0376201A1 (fr) * 1988-12-30 1990-07-04 National Starch and Chemical Investment Holding Corporation Produits faconnés qui sont biodégradables et procédé pour leur préparation

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2214918B (en) * 1988-02-03 1992-10-07 Warner Lambert Co Polymeric materials made from starch and at least one synthetic thermoplastic polymeric material
US4874628A (en) * 1988-09-12 1989-10-17 National Starch And Chemical Corporation Process for the manufacture of cast jelly gum confectionaries
DE474705T1 (de) * 1989-06-01 1992-10-15 Goodman Fielder Wattie Australia Ltd., Gladesville, Neu Sued Wales, Au Geformte gegenstaende aus staerke deriviert.
JP3248155B2 (ja) * 1991-12-26 2002-01-21 富士通株式会社 半導体レーザの駆動方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2125490A1 (fr) * 1971-02-15 1972-09-29 Hayashibara Ken
US4863655A (en) * 1988-12-30 1989-09-05 National Starch And Chemical Corporation Biodegradable packaging material and the method of preparation thereof
EP0375831A1 (fr) * 1988-12-30 1990-07-04 National Starch and Chemical Corporation Produits façonnés qui sont biodégradables et procédé pour leur préparation
EP0376201A1 (fr) * 1988-12-30 1990-07-04 National Starch and Chemical Investment Holding Corporation Produits faconnés qui sont biodégradables et procédé pour leur préparation

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Database PIRA Pira International, Leatherhead,Surrey, GB AN 03-91-02277 DR. FRISCHE ' Starch, raw materials for plastics - technical social & economic aspects' *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9318666U1 (de) * 1993-12-07 1994-01-27 V F A S R L Verpackungsbeutel für Bau- und Bauzusatzstoffe
FR2722901A1 (fr) * 1994-07-21 1996-01-26 C2L Gestion Systeme standard garanti d'identification, de lecture, de comprehension et d'exploitation du code postal
WO2004113192A1 (fr) * 2003-06-20 2004-12-29 Plantic Technologies Ltd Plaquette alveolaire hydrosoluble d'ouverture facile
DE102012006760A1 (de) * 2011-12-19 2013-06-20 Inoviscoat Gmbh Biopolymer-basierte Blisterverpackung
WO2022229661A1 (fr) 2021-04-29 2022-11-03 Dm Flexibles Ltd Produits stratifiés et leurs procédés de production

Also Published As

Publication number Publication date
DE4139467A1 (de) 1993-06-09
JPH05213363A (ja) 1993-08-24
AU2966492A (en) 1993-06-03

Similar Documents

Publication Publication Date Title
DE4139468C2 (de) Klarsichtteil sowie Verwendung desselben
DE4133335C2 (de) Stärkemischung, Verfahren zu ihrer Herstellung sowie Verwendung derselben
EP0906367B1 (fr) Materiau biodegradable comprenant de l'amidon thermoplastique et un polyesteramide
EP0303015B1 (fr) Procédé pour la fabrication des articles moulés à partir du papier et d'un matériau thermoplastique
EP0596437B2 (fr) Mélange de polymères biodégradable
EP0493720B1 (fr) Méthode de retraitement de matériaux d'emballage contenant des couches thermoplastiques et matériau thermoplastique pour emploi ultérieur
EP0545277A1 (fr) Corps d'emballage et son utilisation
DE4125217A1 (de) Mehrschichtformkoerper, haftschicht(en) fuer denselben sowie verwendung dieses mehrschichtformkoerpers und verfahren zur wiederverwendung von schichtmaterialien des formkoerpers
EP0609648A1 (fr) Support recyclable
EP0675920A1 (fr) Utilisation d'une composition pour la fabrication de materiaux a moulage par injection
EP0546538A1 (fr) Dispositif transparent et son utilisation
DE4202948A1 (de) Verwendung von recyclisiertem polyvinyl-butyral zur herstellung von bodenbelaegen
DE2508542B2 (de) Pullulan enthaltende Formmassen
DE69818635T2 (de) Kunststoff-Folie
DE2241577A1 (de) Gerecktes, papierartiges flaechiges material
DE4234953A1 (de) Kunststoffolie, enthaltend kontaminiertes Recyclat, Verfahren zu ihrer Herstellung und Verwendung dieser Folie
EP0546539A1 (fr) Elément d'emballage et son utilisation
EP4090509A1 (fr) Procédé de recyclage d'un produit de transfert
KR20060000695A (ko) 해조류 및 해조가공 부산물을 이용한 신소재 개발 및환경친화성 수지 조성물의 제조방법
DE60026747T2 (de) Bioabbaubare Blöcke für Modelle
EP2380915B1 (fr) Matériau à base d'amidon thermoplastique et résistant à la déformation dans l'eau et son procédé de fabrication
JP2942453B2 (ja) 環境保護新紙材
EP1000953B1 (fr) Procédé de production d'un matériau à base de chitine et pouvant être mis en oeuvre de façon thermoplastique
Donabedian et al. Plasticization and reactive processing of pullulan
AU2005279506A1 (en) Method for producing components, especially structural panels, from solid waste

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19921126

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): CH DE FR GB IT LI NL

17Q First examination report despatched

Effective date: 19930726

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19931206