EP0914379A2 - Feuille biodegradable et compostable a etirage biaxial - Google Patents

Feuille biodegradable et compostable a etirage biaxial

Info

Publication number
EP0914379A2
EP0914379A2 EP97935520A EP97935520A EP0914379A2 EP 0914379 A2 EP0914379 A2 EP 0914379A2 EP 97935520 A EP97935520 A EP 97935520A EP 97935520 A EP97935520 A EP 97935520A EP 0914379 A2 EP0914379 A2 EP 0914379A2
Authority
EP
European Patent Office
Prior art keywords
film
acids
bifunctional
biodegradable
film according
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Withdrawn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
EP97935520A
Other languages
German (de)
English (en)
Inventor
Thomas Gernot
Dirk Schultze
Hermann Benkhoff
Rainer Brandt
Helmut Wagner
Gunter Weber
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.)
Dow Produktions und Vertriebs GmbH and Co oHG
Original Assignee
Wolff Walsrode AG
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 Wolff Walsrode AG filed Critical Wolff Walsrode AG
Publication of EP0914379A2 publication Critical patent/EP0914379A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
    • A01G9/14—Greenhouses
    • A01G9/1438—Covering materials therefor; Materials for protective coverings used for soil and plants, e.g. films, canopies, tunnels or cloches
    • 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
    • B65D65/466—Bio- or photodegradable packaging materials
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2377/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers
    • C08J2377/12—Polyester-amides
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
    • Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/90—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in food processing or handling, e.g. food conservation
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
    • Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics

Definitions

  • the invention relates to a biaxially stretched, biodegradable and compostable film
  • polymeric materials can be subject to biodegradation.
  • the main materials to be mentioned here are those which are obtained from naturally occurring polymers directly or after modification, for example polyhydroxyalkanoates such as polyhydroxybutyrate, plastic
  • biodegradable polymers have been known recently (see DE 44 32 161). These have the property that they can be processed easily thermoplastically and, on the other hand, are biodegradable, ie their entire polymer chain is broken down by microorganisms (bacteria and fungi) by means of enzymes and be completely broken down into carbon dioxide, water and biomass. prevails in a compost, is given, among other things, in DIN 54 900.
  • biodegradable materials can be processed into semi-finished products such as cast or blown films due to their thermoplastic behavior. However, the use of these semi-finished products is very limited. On the one hand, these films are characterized by poor mechanical properties. Shafts made of and on the other hand, the barrier properties with regard to water vapor and gases are very poor in comparison to films made of typical, but not biodegradable plastics such as polyethylene, polypropylene or polyamide.
  • the object of the present invention is to produce a biodegradable and compostable film with improved mechanical and optical properties as well as improved sliding properties. This goal is achieved in that a biodegradable and compostable polymer or a mixture of several respectively biodegradable and compostable polymers is equipped with appropriate additives and a biaxial one
  • biodegradable and compostable polymers or films are understood to mean goods which are tested for “biodegradability” in accordance with the test according to DIN 54 900 from the 1996 draft.
  • polymers can also be oriented biaxially and that the addition of certain additives improves the film sliding properties.
  • the invention relates to a film which has a biaxial orientation and consists of one or more all biodegradable and compostable polymers and additionally with a maximum of 5% by weight of nucleating agents and a maximum of 5% by weight of the usual stabilizers and neutralizing agents and a maximum of 5% by weight. contains the usual lubricants and release agents and a maximum of 5% by weight of the usual antiblocking agents.
  • the film can also be coated with a corona and / or
  • Flame and / or plasma pretreatment and / or an oxidizing substance and / or a depositable / depositable substance and / or a mixture of oxidizing and / or depositable substances e.g. B. gases with radical components such as ozone or a plasma-excited gas mixture of, for example, hexamethyidisiloxane with nitrogen (N 2 ) and / or oxygen (O 2 ), on the
  • the surface pretreatments mentioned are preferably carried out according to the biaxial orientation.
  • the biaxial orientation takes place with amorphous thermoplastics in temperature ranges above the glass transition temperature as well as with partially crystalline thermoplastics below the crystallite melting temperature.
  • the invention also relates to the use of certain biodegradable and compostable polymers or a mixture of these polymers for the production of the film.
  • Suitable polymers are:
  • linear bifunctional alcohols for example ethylene glycol, hexanediol or preferably butanediol, and / or optionally cycloaliphatic bifunctional alcohols, for example cyclohexanedimethanol, and additionally optionally small amounts of higher-functional alcohols, for example 1,2,3-propanetriol or neopentyl glycol, and also from linear bifunctional alcohols Acids, for example succinic acid or adipic acid, and / or optionally cycloaliphatic bifunctional acids, for example cyclohexanedicarboxylic acid, and / or optionally aromatic bifunctional acids, for example terephthalic acid or isophthalic acid or naphthalenedicarboxylic acid, and additionally optionally small amounts of higher-functional acids, for example trimellitic acid, or
  • the acids can also be used in the form of derivatives, for example acid chlorides or esters.
  • linear bifunctional alcohols for example ethylene glycol, butanediol, hexanediol, preferably butanediol, and / or optionally cycloaliphatic bifunctional alcohols, for example cyclohexanedimethanol, and additionally optionally small amounts of higher-functional alcohols, for example 1,2,3-propanetriol or neopentyl glycol , and from linear bifunctional acids, for example succinic acid or adipic acid, and / or optionally cycloaliphatic and / or aromatic bifunctional acids, for example cyclohexanedicarboxylic acid and terephthalic acid, and additionally optionally small amounts of higher-functionality acids, for example trimellitic acid, or
  • ester content C) and / or D) is at least 75% by weight based on the sum of C), D) and E).
  • linear bifunctional alcohols for example ethylene glycol, butanediol, hexanediol, preferably butanediol, and / or cycloaliphatic bifunctional alcohols, for example cyclohexanedimethanol, and additionally, if appropriate, small amounts of higher-frequency tional alcohols, for example 1,2,3-propanetriol or neopentyl glycol, and from linear bifunctional acids, for example succinic acid or adipic acid, and / or optionally cycloaliphatic bifunctional acids, for example cyclohexanedicarboxylic acid, and additionally, if appropriate, small amounts of higher-functional acids, for example
  • a carbonate component which is produced from aromatic bifunctional phenols, preferably bisphenol A and carbonate donors, for example phosgene,
  • ester fraction F) and / or G) is at least 70% by weight based on the sum of F), G) and H).
  • Alcohols for example ethylene glycol, hexanediol or butanediol, preferably butanediol or cyclohexanedimethanol, and additionally small amounts of higher-functional alcohols, for example 1,2,3-
  • Propanetriol or neopentylgycol and from linear and / or cycloaliphatic bifunctional acids, for example succinic acid, adipic acid, cyclohexanedicarboxylic acid, preferably adipic acid and, if appropriate, small amounts of higher-functional acids, for example trimellitic acid, or
  • an amide component from linear and / or cycloaliphatic bifunctional and additionally optionally small amounts of higher functional amines, for example tetramethylene diamine, hexamethylene diamine, isophorondiamine, and from linear and / or cycloaliphatic bifunctional acids and, if appropriate, small amounts of higher-functional acids, for example succinic acid or adipic acid, or
  • ester content I) and / or K) at least 30 wt .-% based on the
  • the biodegradable and compostable raw materials according to the invention can contain a maximum of 5% by weight of nucleating agents typically used for polyester (for example 1,5-naphthalene disodium sulfonate or layered silicates, for example talc, or nucleating agents of nanoparticle size, ie average particle diameter ⁇ 1 ⁇ m, of for example titanium nitride) Aluminum hydroxyl hydrate, barium sulfate or zirconium compounds) and with a maximum of 5% by weight of the usual stabilizers and neutralizing agents and with a maximum of 5% by weight of the usual lubricants and release agents and a maximum of 5% by weight of the usual anti-blocking agents, and possibly with one Corona or flame or
  • Plasma pretreatment or an oxidizing substance or mixture of substances for example gases with radical components such as ozone or a plasma-excited gas mixture of, for example, hexamethyidisiloxane with nitrogen (N 2 ) and / or oxygen (O 2 ), have been treated on the surface.
  • gases with radical components such as ozone or a plasma-excited gas mixture of, for example, hexamethyidisiloxane with nitrogen (N 2 ) and / or oxygen (O 2 )
  • the usual stabilizing compounds for polyester compounds can be used as stabilizers and neutralizing agents.
  • the amount added is a maximum of 5% by weight.
  • Particularly suitable stabilizers are phenolic stabilizers, alkali
  • Phenolic stabilizers are preferred in an amount of 0 to 3% by weight, in particular 0.15 to 0.3% by weight and with a molar mass of more than 500 g / mol. Pentaerythrityl- Tetrakis-3 (3,5-di-tertiary-butyl-4-hydroxyphenyl) propionate or 1,3,5-trimethyl-2,4,6-tris (3,5-di-tertiary-butyl-4-hydroxybenzyl) benzene particularly advantageous.
  • Neutralizing agents are preferably dihydrotalcite, calcium stearate, calcium carbonate and / or calcium montanate with an average particle size of at most 0.7 ⁇ m, an absolute particle size of less than 10 ⁇ m and a specific one
  • the film has a nucleating agent fraction of 0.0001 to 2% by weight and a stabilizer and neutralizing agent fraction of 0.0001 to 2% by weight.
  • Lubricants and release agents are higher aliphatic amides, tertiary amines, aliphatic acid amides, higher aliphatic acid esters, low molecular polar modified waxes, montan waxes, cyclic waxes, phthalates, metal soaps and silicone oils.
  • the addition of higher aliphatic acid amides and silicone oils is particularly suitable.
  • the aliphatic amides include, in particular, the supply forms of
  • Aliphatic acid amides are amides of a water-insoluble monocarboxylic acid (so-called fatty acids) with 8 to 24 carbon atoms, preferably 10 to 18 carbon atoms. Erucic acid amide, stearic acid amide and oleic acid amide are preferred among them.
  • release agents or lubricants are compounds that both
  • ester and amide groups such as stearamide ethyl stearate or 2 stear amido ethyl stearate.
  • Suitable cyclic waxes are components such as cyclic adipic acid tetramethylene esters or 1,6-dioxa-2,7-dioxocyclododecane, or the homologous hexamethylene derivative. Such substances are known as commercial products with the name Glycolube VL.
  • Suitable silicone oils are polydialkylsiloxanes, preferably polydimethylsiloxane, polymethylphenylsiloxane, olefin-modified silicone, silicone modified with polyethers such as, for. B. polyethylene glycol and polypropylene glycol and epoxyamino- and alcohol-modified silicone.
  • the viscosity of the suitable silicone oils is in the range from 5,000 to 1,000,000 mm 2 / s. Polydimenthylsiloxane with a viscosity of 10,000 to 100,000 mm 2 / s is preferred.
  • the amount of lubricant added is a maximum of 5% by weight. In a particularly preferred embodiment of the film, it has a lubricant content of 0.005 to 4% by weight. In a very particularly preferred embodiment of the film, it has a lubricant content of 0.05 to 1% by weight.
  • Suitable antiblocking agents are both inorganic and organic additives which, after the biaxial stretching, protrude as an elevation from the film surface and thus produce a spacer effect.
  • the following substances are used as inorganic antiblocking agents:
  • Aluminum silicates for example kaolin or kaolin clay
  • Aluminum oxi de, for example ⁇ -aluminum oxide
  • Micro glass balls and the following substances are used as organic antiblocking agents: organic polymers incompatible with the biodegradable polymer such as
  • Polycarbonate cross-linked and uncross-linked polymethyl methacrylate cross-linked polysiloxane e.g. Tospearl
  • polar-modified polyethylene e.g. maleic anhydride-grafted polyethylene
  • polar-modified polypropylene e.g. maleic anhydride-grafted polypropylene
  • Benzoguanamine formaldehyde polymers aliphatic and partially aromatic polyesters with different melting points than that
  • the effective amount of antiblocking agent is up to a maximum of 5% by weight.
  • the film contains 0.005 to 4% by weight of antiblocking agent.
  • the film contains
  • the average particle size is between 1 and 6 ⁇ m, in particular 2 and 5 ⁇ m, particles with a spherical shape, as in EP-A-0 236 945 and DE-A-38 01 535, are particularly suitable. Combinations of different spacer systems are also particularly suitable
  • the polymers for the film provided with additives are provided with the desired amounts by weight of organic or inorganic fillers in the production of raw materials. This takes place during granulation of the raw material, for example in twin-screw extruders, where the additives are added to the raw material Additization is also possible in that part or all of the necessary additives are added to a raw material that has not or only partially been finished in the form of a masterbatch.
  • masterbatch means a masterbatch, in particular a granular, dust-free concentrate of a plastic raw material with high
  • Amounts of additives that are used in the mass preparation as an intermediate product (as a material additive to granules that are not or only partially or incompletely equipped with additives) in order to produce films that contain a certain amount of additives.
  • the masterbatch is added to the polymer granulate before filling the extruder in such amounts to the raw materials which are not or only partially or incompletely mixed with additives, so that the desired weight percentages of fillers are achieved in the films
  • the preferred materials from which the masterbatches are made in addition to the additives are substances that are compatible with the biodegradable raw materials mentioned in this invention.
  • the materials from which the masterbatches are produced in addition to the additives are also biodegradable materials
  • the procedure is expediently such that the film is passed between two conductor elements serving as electrodes, with such a high voltage, usually alternating voltage (approximately 5 to 20 kV and 5 to 30 kHz), that spray is applied between the electrodes - Or corona discharges can take place.
  • a high voltage usually alternating voltage (approximately 5 to 20 kV and 5 to 30 kHz)
  • alternating voltage approximately 5 to 20 kV and 5 to 30 kHz
  • corona discharges can take place.
  • the air above the film surface is ionized by the spray or corona discharge and reacts with the molecules of the film surface, so that additional polar inclusions in the
  • an electrical DC voltage is applied between a burner (negative pole) and a cooling roller.
  • the level of the applied voltage is between 400 and 3,000 V, preferably in the range of 500 to 2,000 V.
  • the applied voltage gives the ionized atoms increased acceleration and impacts the polymer surface with greater kinetic energy.
  • the chemical bonds within the polymer molecule are broken up more easily and the radical formation takes place faster.
  • the thermal load of the Polymers are far less than in the standard flame treatment, and films can be obtained in which the sealing properties of the treated side are even better than those of the untreated side.
  • gases e.g. B. oxygen or nitrogen or carbon dioxide or methane or halogenated hydrocarbons or silane compounds or higher molecular weight compounds or mixtures thereof
  • a high-energy field for. B. microwave radiation exposed.
  • High-energy electrons are created, which hit the molecules and transfer their energies.
  • Monomer radicals and ions are formed. The resulting monomer radicals form - partly in plasma - short-chain oligomers, which then condense and polymerize on the surface to be coated. A homogeneous film is deposited on the coating material.
  • the invention furthermore relates to the use of a certain class of materials of the biodegradable and compostable polymers for the production of the film, this class of materials being polyester amide.
  • the film of the invention can be made of a polyester amide or a
  • the invention also relates to a method for producing the film according to the invention.
  • This method is characterized in that the or the biodegradable and compostable materials are first broken down by the action of heat and shear, this melt is removed in a tool, cooled until solidification, then in the case of partially crystalline materials to temperatures below the crystallite melt temperature and in the case of amorphous materials above the glass transition temperature and then tempered or be stretched biaxially several times.
  • the film can optionally be fixed in each case.
  • the film thus produced can possibly be surface-pretreated in-line.
  • the pretreatment can be carried out with a corona, a flame, a plasma or an oxidative substance or mixture of substances, e.g.
  • gases with free radical components such as ozone or a plasma-excited gas mixture of example hexamethyidisiloxane with nitrogen (N 2 ) and / or oxygen (O 2 ), so that there is an increase in the surface tension on the film.
  • the invention also relates to a method for stretching the film.
  • the biaxial stretching can be carried out in the simultaneous stretching process or in the two-stage sequential process, where both first longitudinal and then transverse stretching as well as first transverse and then longitudinal stretching, or in the three-stage sequential process, whereby both first longitudinal, then transverse and finally longitudinal stretching as can also first be stretched transversely, then lengthwise and finally crosswise, or in the four-stage sequential process, whereby both first stretched longitudinally, then crosswise, then lengthwise and finally crosswise as well as first crosswise, then lengthwise, then crosswise and finally can be stretched longitudinally.
  • the film may be attached to each individual stretching.
  • the individual stretching in the longitudinal and transverse directions can take place in one or more stages.
  • the biaxial stretching is characterized in that it is a sequential process which begins with the longitudinal stretching.
  • the biaxial stretching is characterized in that the total stretch ratio in the longitudinal direction is 1: 1.5 to 1:10 and the total stretch ratio in the transverse direction is 1: 2 to 1:20. In an even more preferred form of the film according to the invention, the biaxial stretching is characterized in that the total stretch ratio in the longitudinal direction is 1: 2.8 to 1 8 and the total stretch ratio in the transverse direction is 1 3.8 to 1 15
  • the film according to the invention has a thickness which is less than 500 ⁇ m
  • the film according to the invention has a thickness which is less than 80 ⁇ m
  • the invention furthermore relates to the use of the film according to the invention.
  • This film is used as a solo film in pretreated or untreated and in printed or unprinted form for packaging in the food and non-food sectors or as a solo film in pretreated or untreated form
  • Organic waste or as a solo film in pretreated or untreated form for protective and separating functions in connection with cosmetics and hygiene articles, for example for baby diapers or sanitary napkins, or as a solo film in pretreated or untreated form for surface protection or surface finishing in the area of cardboard, paper and letter window lamination or as a refined film, which can be used in pretreated or untreated as well as printed or unprinted form and provided with adhesive as a label or adhesive strip, in order to improve the print adhesion or bondability, the film surface can be used during production and / or subsequently during the Further processing with a
  • the invention furthermore relates to the use of the film according to the invention as a coated film or in a film composite.
  • the other films of the composite may be non-degradable film or else are also biodegradable and compostable films.
  • the coating or adhesive used can belong to the normal non-degradable systems as well as to the biodegradable and compostable raw materials.
  • the coated film or a film composite For the production of the coated film or a film composite, only substances are used that are biodegradable and compostable, so that the overall composite is also biodegradable and compostable.
  • the invention also relates to the use of the film according to the invention as a starting material for the production of a bag which, according to the
  • the bag can be produced by gluing and sealing the film and can both be closed and have an opening with a corresponding closure or connection.
  • the invention also relates to the use of the film or composites according to the invention as a starting material for the production of a packaging or separating or surface protection film with very high water vapor permeability by piercing this film with a cold or tempered needle roller.
  • the purpose of this film is to pack moisture-releasing goods, such as bread or various types of vegetables, or as a release and protective film in the hygiene area
  • a biodegradable polyester amide with a melt viscosity of 250 Pas at 190 ° C (measured according to DIN 54 81 1 - B) and a melting point of 125 ° C measured according to ISO 3146 / C2, which has a lubricant content of 1% by weight and an antiblock content of 0.1% by weight was among the following
  • Tempering rollers at temperatures of 65 ° C were heated to the stretching temperature.
  • the actual stretching rollers were operated at a temperature of 70 ° C.
  • the flat film was first stretched in two stages in the longitudinal direction, once by the ratio 1 1.5 and then by the ratio of 1 2.5. This resulted in a total stretch ratio of in the longitudinal direction
  • Example 2 The same biodegradable polyesteramide from Example 1 was processed to a biaxially oriented film under the process conditions described in Example 1. In this case, a film with a thickness of 24 ⁇ m was produced by lowering the extrusion speed
  • Contained lubricant was, under the process conditions described by Example 1 processed into a biaxially oriented film. A film with a thickness of 50 ⁇ m could be produced.
  • the mechanical parameters tear strength and elongation at break were determined on the samples both in the longitudinal and in the transverse direction in accordance with DIN 53 455.
  • the modulus of elasticity in the longitudinal and transverse directions was determined in accordance with DIN 53 457.
  • the thickness of the individual samples was determined in accordance with DIN 53 370.
  • the samples were analyzed after the biaxial puncture test in accordance with DIN 53 373.
  • the slide properties of the films were measured in accordance with DIN 53 370 at room temperature and film against film.
  • the optical gloss of the films was determined according to DIN 67 530 at a test angle of 20 ° and the haze according to ASTM D 1003. The gloss measurement was carried out on both sides of the film. Averaging was then carried out from the values determined in this case and reported as a result.
  • the compostability was carried out according to the test specification of the DIN standard draft DIN 54 900 part 3 from 1996. Based on the test results, the film samples are classified into the appropriate class in accordance with the DIN specifications.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Soil Sciences (AREA)
  • Environmental Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Mechanical Engineering (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Biological Depolymerization Polymers (AREA)
  • Laminated Bodies (AREA)
  • Printing Methods (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)

Abstract

La feuille décrite est orientée selon deux axes et sensiblement constituée d'un ou plusieurs polymères qui sont tous biiodégradables et compostables, ainsi que d'au maximum 5 % en poids d'agents nucléants, d'au maximum 5 % en poids de stabilisants et neutralisants usuels, d'au maximum 5 % en poids de lubrifiants et d'agents de démoulage usuels et d'au maximum 5 % en poids d'agents antigrippants usuels.
EP97935520A 1996-07-26 1997-07-14 Feuille biodegradable et compostable a etirage biaxial Withdrawn EP0914379A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19630233A DE19630233A1 (de) 1996-07-26 1996-07-26 Biaxial gereckte, biologisch abbaubare und kompostierbare Folie mit verbesserten Gleiteigenschaften
DE19630233 1996-07-26
PCT/EP1997/003748 WO1998004627A2 (fr) 1996-07-26 1997-07-14 Feuille biodegradable et compostable a etirage biaxial

Publications (1)

Publication Number Publication Date
EP0914379A2 true EP0914379A2 (fr) 1999-05-12

Family

ID=7800954

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97935520A Withdrawn EP0914379A2 (fr) 1996-07-26 1997-07-14 Feuille biodegradable et compostable a etirage biaxial

Country Status (10)

Country Link
EP (1) EP0914379A2 (fr)
JP (1) JP2001501648A (fr)
KR (1) KR20000029556A (fr)
CN (1) CN1226272A (fr)
AU (1) AU732420B2 (fr)
BR (1) BR9710572A (fr)
CA (1) CA2261975A1 (fr)
DE (1) DE19630233A1 (fr)
IL (1) IL128214A0 (fr)
WO (1) WO1998004627A2 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19811225A1 (de) * 1998-03-18 1999-09-30 Wolff Walsrode Ag Verbesserung der Hydrolysestabilität von Folien aus biologisch abbaubaren Polymeren und Verfahren zur Herstellung solcher Folien
DE19811773A1 (de) * 1998-03-18 1999-09-23 Wolff Walsrode Ag Thermoplastische, biologisch abbaubare und kompostierbare opake Folie und Verfahren zu deren Herstellung
DE19912996A1 (de) * 1999-03-23 2000-09-28 Wolff Walsrode Ag Biologisch abbaubare Landwirtschaftsfolien
DE102005052441C5 (de) * 2005-11-03 2013-05-16 Treofan Germany Gmbh & Co. Kg Verfahren zur Erhöhung der Oberflächenspannung einer biaxial orientierten Folie aus thermoplastischen Polymeren, sowie Verfahren zur Herstellung von bedruckten, metallisierten, laminierten, kaschierten oder beschichteten Folien, hergestellt nach diesem Verfahren zur Erhöhung der Oberflächenspannung
ITPG20110034A1 (it) * 2011-11-08 2013-05-09 Polycart S R L Apparato di supporto per etichette biodegradabili adesive e relativo metodo di realizzazione
KR102120069B1 (ko) * 2011-11-21 2020-06-08 이노베이션 해머 엘엘씨 실리케이트계 기질을 사용하여 식물을 성장시키는 방법 및 시스템, 내생성 글리코피라노실-단백질 유도체를 위한 외생성 글리코피라노사이드 사용에 의한 향상된 광합성 생산성 및 광안전화 재배, 및 그를 위한 제제, 방법 및 시스템
BR112018072235B1 (pt) 2016-04-29 2023-01-17 Innovation Hammer Llc Método para intensificar o crescimento respiratório de um organismo fotossintético que compreende aplicar uma formulação de compósito de glicano
CN109721984A (zh) * 2017-10-31 2019-05-07 丹阳博亚新材料技术服务有限公司 一种隔热防雾大棚薄膜
NL2021594B1 (en) * 2018-09-10 2019-10-07 Compostable Coffee Cups Ip B V Improved cartridge for the preparation of a beverage
NL2021596B1 (en) * 2018-09-10 2019-10-07 Compostable Coffee Cups Ip B V Biodegradable beverage cartridge

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994007941A1 (fr) * 1992-10-02 1994-04-14 Cargill, Incorporated Films polymeres de lactide stables a la fusion et leurs procedes de fabrication
JP3307748B2 (ja) * 1993-03-31 2002-07-24 大日本インキ化学工業株式会社 乳酸系共重合ポリエステルの製造方法
DE4437792A1 (de) * 1994-10-21 1996-04-25 Inventa Ag Formmassen auf der Basis von aliphatischen Polyestern
JP3434517B2 (ja) * 1994-12-21 2003-08-11 昭和電工株式会社 脂肪族ポリエステル系樹脂およびその製造方法
EP0736563A1 (fr) * 1995-04-07 1996-10-09 SAFTA S.p.A. Procédé de préparation de films complètement biodegradable avec des caractéristiques mécaniques améliorés, produits obtenus et leurs applications
US5786408A (en) * 1995-06-22 1998-07-28 Daicel Chemical Industries, Ltd. Biodegradable polyester resin composition, and a biodegradable molded article
GB9600006D0 (en) * 1996-01-02 1996-03-06 Courtaulds Fibres Holdings Ltd Polymeric films

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9804627A2 *

Also Published As

Publication number Publication date
WO1998004627A3 (fr) 1998-03-05
CN1226272A (zh) 1999-08-18
IL128214A0 (en) 1999-11-30
WO1998004627A2 (fr) 1998-02-05
BR9710572A (pt) 1999-08-17
JP2001501648A (ja) 2001-02-06
CA2261975A1 (fr) 1998-02-05
AU3848497A (en) 1998-02-20
AU732420B2 (en) 2001-04-26
KR20000029556A (ko) 2000-05-25
DE19630233A1 (de) 1998-01-29

Similar Documents

Publication Publication Date Title
WO1999047602A2 (fr) Film opaque, thermoplastique, biodegradable et compostable, et son procede de production
DE69834726T2 (de) Pha-zusammensetzungen und deren verwendung zur herstellung von pha-filmen
DE69831009T2 (de) Polyhydroxyalkanoate enthaltende polymermischungen und zusammensetzungen mit guter beständigkeit der dehnung
WO1998004619A1 (fr) Feuille biodegradable et compostable a etirement monoaxial et a proprietes ameliorees
EP3079907B1 (fr) Mélange de polymères pour film barrière
DE102004032596A1 (de) Mehrschichtige, matte, thermoformbare, IR-reflektierende Polyesterfolie
EP1265949A1 (fr) Film thermoformable, transparent, stable aux uv, en matiere thermoplastique cristallisable, son procede de fabrication et son utilisation
EP0914379A2 (fr) Feuille biodegradable et compostable a etirage biaxial
DE19630235A1 (de) Biaxial gereckte, biologisch abbaubare und kompostierbare Folie mit verbesserten Eigenschaften
DE102004032595A1 (de) Matte, thermoformbare, IR-reflektierende Polyesterfolie
DE19630231A1 (de) Kompostierbare Trägerbahn
EP1099544A2 (fr) Feuilles thermoplastiques biodégradables monocouches où multicouches et leur utilisation comme feuille d'emballage où dans des articles cosmétiques et d'hygiène
DE19811226A1 (de) Mehrschichtige, thermoplastische Folien aus Polyesteramid und Verfahren zu deren Herstellung
DE19954404A1 (de) Ein- oder mehrschichtige, biologisch abbaubare, thermoplastische Folie mit verbesserten Barriereeigenschaften gegenüber Geruchsstoffen und deren Verwendung in Verpackungsmaterialien und Hygiene- und Kosmetik-Artikeln
EP2081982B1 (fr) Film de pla à étirage simultané et propriétés mécaniques améliorées
WO1999047600A1 (fr) Films stabilises pour resister a l'hydrolyse, constitues de polymeres biodegradables, et procede de production de tels films
EP1099543A2 (fr) Feuilles thermoplastiques multicouches biodégradables, méthode pour leur production, et leur utilisation comme matériau d'emballage et dans des articles cosmétiques et d'hygiène
EP1144507A3 (fr) Corps extrudes thermoplastiques biodegradables presentant une stabilite a l'hydrolyse et une resistance au fendillement par contrainte ameliorees
DE19951021A1 (de) Biologisch abbaubare, thermoplastische Formkörper mit verbesserter Hydrolysestabilität und Spannungsrissbeständigkeit
DE19935965A1 (de) Biologisch abbaubare Verbundfolien
DE69508650T2 (de) L-Milchsäure-Polymerzusammensetzung, geformtes Produkt und Film
DE19849448A1 (de) Luftpolsterfolien aus biologisch abbaubaren Polymeren

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: 19990226

AK Designated contracting states

Kind code of ref document: A2

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

17Q First examination report despatched

Effective date: 20020911

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: 20030122