DE102017003559A1 - Paper and honeycomb made from it - Google Patents
Paper and honeycomb made from it Download PDFInfo
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- DE102017003559A1 DE102017003559A1 DE102017003559.8A DE102017003559A DE102017003559A1 DE 102017003559 A1 DE102017003559 A1 DE 102017003559A1 DE 102017003559 A DE102017003559 A DE 102017003559A DE 102017003559 A1 DE102017003559 A1 DE 102017003559A1
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
- D21H13/10—Organic non-cellulose fibres
- D21H13/20—Organic non-cellulose fibres from macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H13/26—Polyamides; Polyimides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/10—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of paper or cardboard
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/38—Layered products comprising a layer of synthetic resin comprising epoxy resins
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B29/00—Layered products comprising a layer of paper or cardboard
- B32B29/002—Layered products comprising a layer of paper or cardboard as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B29/005—Layered products comprising a layer of paper or cardboard as the main or only constituent of a layer, which is next to another layer of the same or of a different material next to another layer of paper or cardboard layer
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- B32B29/00—Layered products comprising a layer of paper or cardboard
- B32B29/02—Layered products comprising a layer of paper or cardboard next to a fibrous or filamentary layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
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- B32B3/12—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by a layer of regularly- arranged cells, e.g. a honeycomb structure
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- B32B3/28—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer comprising a deformed thin sheet, i.e. the layer having its entire thickness deformed out of the plane, e.g. corrugated, crumpled
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- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
- B32B5/08—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer the fibres or filaments of a layer being of different substances, e.g. conjugate fibres, mixture of different fibres
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- B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
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- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/05—Interconnection of layers the layers not being connected over the whole surface, e.g. discontinuous connection or patterned connection
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- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/08—Interconnection of layers by mechanical means
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
- D21H13/10—Organic non-cellulose fibres
- D21H13/12—Organic non-cellulose fibres from macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D21H13/16—Polyalkenylalcohols; Polyalkenylethers; Polyalkenylesters
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
- D21H13/36—Inorganic fibres or flakes
- D21H13/38—Inorganic fibres or flakes siliceous
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
- D21H13/36—Inorganic fibres or flakes
- D21H13/38—Inorganic fibres or flakes siliceous
- D21H13/40—Inorganic fibres or flakes siliceous vitreous, e.g. mineral wool, glass fibres
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/34—Ignifugeants
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- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
- D21H25/04—Physical treatment, e.g. heating, irradiating
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/14—Paper having stable form or dimension; Curl-resistant paper
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- B32B2250/00—Layers arrangement
- B32B2250/40—Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0223—Vinyl resin fibres
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Abstract
Die Erfindung betrifft ein Papier, das insbesondere zur Herstellung einer Wabenstruktur verwendet werden kann. Das Papier enthält thermoplastische Fasernund mineralische Fasern. Daneben betrifft die Erfindung eine aus dem Papier hergestellte Wabenstruktur.The invention relates to a paper which can be used in particular for producing a honeycomb structure. The paper contains thermoplastic fibers and mineral fibers. In addition, the invention relates to a honeycomb structure made of paper.
Description
Die Erfindung betrifft ein Papier, insbesondere zur Herstellung einer Wabenstruktur.The invention relates to a paper, in particular for producing a honeycomb structure.
Wabenstrukturen werden unter anderem im Leichtbau eingesetzt, beispielsweise für Strukturen von Luftfahrzeugen. Herkömmliche Wabenstrukturen werden aus speziellen Papieren hergestellt, die ein- oder beidseitig mit einer Deckschicht versehen sein können.Honeycomb structures are used, inter alia, in lightweight construction, for example for structures of aircraft. Conventional honeycomb structures are made of special papers, which may be provided on one or both sides with a cover layer.
Herkömmliche Wabenkerne, die auch als Honeycombs bezeichnet werden, werden beispielsweise von der Firma DuPont unter der Marke Nomex angeboten. Derartige Papiere bestehen aus Metaaramidfasern, die fibrilliert sind und gleichzeitig als Binder bei der Herstellung des Papiers dienen. Da derartige Papiere und Wabenkerne vergleichsweise teuer sind, besteht Bedarf an einem Papier, das sich für die Herstellung einer Wabenstruktur eignet und das kostengünstig herstellbar ist.Conventional honeycomb cores, which are also referred to as honeycombs are offered for example by DuPont under the brand Nomex. Such papers are made of meta-tag fibers which are fibrillated and at the same time serve as binders in the manufacture of the paper. Since such papers and honeycomb cores are relatively expensive, there is a need for a paper which is suitable for the production of a honeycomb structure and which can be produced cost-effectively.
Der Erfindung liegt daher die Aufgabe zugrunde, ein Papier anzugeben, das zur Herstellung einer Wabenstruktur geeignet und kostengünstig herstellbar ist.The invention is therefore based on the object to provide a paper that is suitable for producing a honeycomb structure and inexpensive to produce.
Zur Lösung dieser Aufgabe ist ein Papier vorgesehen, das thermoplastische Fasern und mineralische Fasern enthält.To solve this problem, a paper is provided which contains thermoplastic fibers and mineral fibers.
Das erfindungsgemäße Papier weist den Vorteil auf, dass die für die Herstellung benötigten Komponenten kostengünstig erhältlich sind, sodass es als Ersatz für das herkömmliche hochpreisige Papier eingesetzt werden kann. Die einzelnen Komponenten, nämlich die thermoplastischen und die mineralischen Fasern, sind schwer oder nicht entflammbar, sodass das erfindungsgemäße Papier die Anforderungen an den Brandschutz erfüllt.The paper according to the invention has the advantage that the components required for the production are available at low cost, so that it can be used as a replacement for the conventional high-priced paper. The individual components, namely the thermoplastic and the mineral fibers are heavy or non-flammable, so that the paper of the invention meets the requirements of fire protection.
Bei dem erfindungsgemäßen Papier wird es bevorzugt, dass die thermoplastischen Fasern Aramid-Jet-Spun-Fibride und/oder Aramid-Stapelfasern umfassen. Aramid-Jet-Spun-Fibride sind unter der Bezeichnung Twaron D8016 kommerziell erhältlich. Aramid-Stapelfasern sind unter der Bezeichnung Twaron 1080 kommerziell erhältlich.In the paper of the present invention, it is preferred that the thermoplastic fibers comprise aramid jet spun fibrids and / or aramid staple fibers. Aramid jet spun fibrids are commercially available under the name Twaron D8016. Aramid staple fibers are commercially available under the name Twaron 1080.
Vorzugsweise enthält das Papier zusätzlich duroplastische Fasern. Hierdurch kann der Anteil der Aramidfasern und somit die Kosten des Papiers gesenkt werden.Preferably, the paper additionally contains thermosetting fibers. As a result, the proportion of aramid fibers and thus the cost of the paper can be reduced.
In einer bevorzugten Ausführungsform der Erfindung kommen als duroplastische Fasern bei dem Papier Melaminfasern zum Einsatz. Vorzugsweise handelt sich dabei um fibrillierte Melaminfasern. Der Begriff fibrilliert bedeutet, dass die Fasern parallel zu Ihrer Längsrichtung aufgebrochen sind bzw. werden.In a preferred embodiment of the invention, melamine fibers are used as duroplastic fibers in the paper. Preferably, these are fibrillated melamine fibers. The term fibrillated means that the fibers are broken parallel to their longitudinal direction.
Im Rahmen der Erfindung wird es bevorzugt, dass die mineralischen Fasern Basaltfasern umfassen. Es handelt sich dabei um nicht lungengängige Basaltfasern. Beispielsweise handelt es sich um Kurzschnittfasern mit einer Länge von 4 mm.Within the scope of the invention it is preferred that the mineral fibers comprise basalt fibers. These are non-respirable basalt fibers. For example, it is short cut fibers with a length of 4 mm.
Bei einer bevorzugten Ausführungsform der Erfindung enthält das Papier mineralische Steinwollfasern, beispielsweise vom Typ MS 675 Rockforce von Lapinus. Diese dienen als kostengünstige und brandhemmende Faserkomponente.In a preferred embodiment of the invention, the paper contains mineral rockwool fibers, for example of the type MS 675 Rockforce from Lapinus. These serve as a cost-effective and fire-retarding fiber component.
Eine bevorzugte Weiterbildung der Erfindung sieht vor, dass das erfindungsgemäße Papier aus Polyvinylalkohol (PVA) hergestellte organische Bindefasern umfasst. Vorzugsweise handelt es sich um Polyvinylalkohol-Kurzfasern mit 4 mm Länge, insbesondere mit der Bezeichnung VPB 105-2.A preferred development of the invention provides that the paper according to the invention comprises organic binder fibers produced from polyvinyl alcohol (PVA). Preferably, it is polyvinyl alcohol short fibers with 4 mm length, in particular with the designation VPB 105-2.
Eine bevorzugte Variante des erfindungsgemäßen Papiers weist die folgende Zusammensetzung auf: 30 bis 50 Gewichtsprozent Aramid-Jet-Spun-Fibride, 6 bis 10 Gewichtsprozent Aramid-Stapelfasern, 15 bis 30 Gewichtsprozent mineralische Steinwollfasern, 20 bis 40 Gewichtsprozent Basaltfasern, 1 bis 10 Gewichtsprozent aus Polyvinylalkohol hergestellte organische Bindefasern, wobei die Summe aller Anteile 100 Gewichtsprozent beträgt.A preferred variant of the paper according to the invention has the following composition: 30 to 50 percent by weight aramid-jet-spun fibrids, 6 to 10 percent by weight aramid staple fibers, 15 to 30 percent by weight mineral rock wool fibers, 20 to 40 percent by weight basalt fibers, 1 to 10 percent by weight Polyvinyl alcohol produced organic binder fibers, wherein the sum of all proportions is 100 percent by weight.
Das auf diese Weise hergestellte Papier lässt sich kostengünstig herstellen, es zeichnet sich durch gute mechanische Eigenschaften und die Erfüllung der Brandschutzvorschriften aus.The paper produced in this way can be produced inexpensively, it is characterized by good mechanical properties and compliance with fire safety regulations.
Eine besonders bevorzugte Variante des erfindungsgemäßen Papiers weist die folgende Zusammensetzung auf: 36 Gewichtsprozent Aramid-Jet-Spun-Fibride, 9 Gewichtsprozent Aramid-Stapelfasern, 20 Gewichtsprozent mineralische Steinwollfasern, 30 Gewichtsprozent Basaltfasern und 5 Gewichtsprozent aus Polyvinylalkohol hergestellte organische Bindefasern.A particularly preferred variant of the paper according to the invention has the following composition: 36 percent by weight aramid jet spun fibrids, 9 percent by weight aramid staple fibers, 20 percent by weight mineral rock wool fibers, 30 percent by weight basalt fibers and 5 percent by weight organic binder fibers made from polyvinyl alcohol.
Das erfindungsgemäße hergestellte Papier kann ein Flächengewicht zwischen 30 g/m2 und 100 g/m2 aufweisen. Vorzugsweise beträgt das Flächengewicht 70 bis 80 g/m2, besonders bevorzugt 75 g/m2.The paper produced according to the invention may have a basis weight between 30 g / m 2 and 100 g / m 2 . The basis weight is preferably 70 to 80 g / m 2 , particularly preferably 75 g / m 2 .
Daneben betrifft die Erfindung eine Wabenstruktur, die aus einem Papier der beschriebenen Art hergestellt ist. Die Wabenstruktur kann sechseckige Waben aufweisen, die auch als „Honeycomb“ bezeichnet werden. Alternativ kann die Wabenstruktur Sinuswaben aufweisen. Sinuswaben werden aus wellenförmig (sinusförmig) gebogenen Papierstreifen hergestellt, die zwischen parallelen Papierstreifen aufgenommen sind. Die sechseckigen Waben und die Sinuswaben sind vorzugsweise mit einer oberen und einer unteren Deckschicht versehen. Die Deckschicht kann aus einem anderen Material als Papier hergestellt sein, beispielsweise kann die Deckschicht aus glasfaserverstärktem Kunststoff hergestellt sein, der Epoxidharz als Matrixwerkstoff umfasst.In addition, the invention relates to a honeycomb structure, which is made of a paper of the type described. The honeycomb structure may include hexagonal honeycombs, also referred to as "honeycomb". Alternatively, the honeycomb structure may comprise sinusoids. Sinusoidal honeycombs are made from wavy (sinusoidal) bent paper strips that are sandwiched between parallel strips of paper. The hexagonal honeycombs and the sinusoids are preferably provided with an upper and a lower cover layer. The cover layer may be made of a material other than paper, for example, the cover layer may be made of glass fiber reinforced plastic comprising epoxy resin as a matrix material.
Eine Variante der Wabenstruktur sieht vor, dass die aus Papier hergestellten Komponenten durch Ultraschallschweißen miteinander verbunden werden. Aufgrund der vorteilhaften mechanischen Eigenschaften des erfindungsgemäßen Papiers kann dieses thermisch bei vergleichsweise niedrigen Temperaturen umgeformt werden, z. B. auf einer Riffelanlage.A variant of the honeycomb structure provides that the components made of paper are joined together by ultrasonic welding. Due to the advantageous mechanical properties of the paper according to the invention this can be thermally transformed at relatively low temperatures, for. B. on a corrugated system.
[t1][T1]
Das erfindungsgemäße Papier und die aus dem Papier hergestellte Wabenstruktur zeichnen sich durch ein günstiges Brandverhalten aus, zudem sind die für das Papier verwendeten Rohstoffe kostengünstig erhältlich.The paper according to the invention and the honeycomb structure made of the paper are characterized by a favorable fire behavior, in addition, the raw materials used for the paper are available at low cost.
Claims (13)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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DE102017003559.8A DE102017003559A1 (en) | 2017-04-12 | 2017-04-12 | Paper and honeycomb made from it |
CN201880019248.9A CN110475930A (en) | 2017-04-12 | 2018-04-04 | Paper and honeycomb prepared therefrom |
EP18718390.0A EP3596268A1 (en) | 2017-04-12 | 2018-04-04 | Paper and thus produced honeycomb structure |
PCT/EP2018/000160 WO2018188778A1 (en) | 2017-04-12 | 2018-04-04 | Paper and thus produced honeycomb structure |
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DE102017003559.8A DE102017003559A1 (en) | 2017-04-12 | 2017-04-12 | Paper and honeycomb made from it |
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DE102017003559A1 true DE102017003559A1 (en) | 2018-10-18 |
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DE102017003559.8A Withdrawn DE102017003559A1 (en) | 2017-04-12 | 2017-04-12 | Paper and honeycomb made from it |
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EP (1) | EP3596268A1 (en) |
CN (1) | CN110475930A (en) |
DE (1) | DE102017003559A1 (en) |
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Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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CN1948615A (en) * | 2006-11-07 | 2007-04-18 | 成都天畅新材料有限公司 | Synthetic fiber paper containing basalt fiber and chemical fiber and its preparation method |
EP2817451B1 (en) * | 2012-02-23 | 2016-01-13 | E. I. du Pont de Nemours and Company | A fiber-resin composite sheet and article comprising the same |
WO2016196472A1 (en) * | 2015-05-29 | 2016-12-08 | Sabic Global Technologies B.V. | Honeycomb paper |
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JP6649701B2 (en) * | 2015-05-28 | 2020-02-19 | デュポン帝人アドバンスドペーパー株式会社 | Aramid paper and method for producing the same |
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2017
- 2017-04-12 DE DE102017003559.8A patent/DE102017003559A1/en not_active Withdrawn
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2018
- 2018-04-04 WO PCT/EP2018/000160 patent/WO2018188778A1/en unknown
- 2018-04-04 CN CN201880019248.9A patent/CN110475930A/en active Pending
- 2018-04-04 EP EP18718390.0A patent/EP3596268A1/en not_active Withdrawn
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CN1948615A (en) * | 2006-11-07 | 2007-04-18 | 成都天畅新材料有限公司 | Synthetic fiber paper containing basalt fiber and chemical fiber and its preparation method |
EP2817451B1 (en) * | 2012-02-23 | 2016-01-13 | E. I. du Pont de Nemours and Company | A fiber-resin composite sheet and article comprising the same |
WO2016196472A1 (en) * | 2015-05-29 | 2016-12-08 | Sabic Global Technologies B.V. | Honeycomb paper |
Non-Patent Citations (2)
Title |
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J. Strauß, T. Kuntzsch, A. Bugiel: Faserbasierte Lösungen für die Produkte von Morgen. Analyse und Simulation mechanischer Eigenschaften bei der Entwicklung adaptierter papierartiger Werkstoffe für Falt- und Honigwaben-Sandwichkerne (Papierartige Werkstoffe für Sandwich-Kernstrukturen) PTS-Forschungsbericht 4/16, Februar 2017, 1-85. www.ptspaper.de/forschungsdatenbank [online]. In: www.ptspaper.de/forschungsdatenbank * |
TAO SHIYI HENG (Erfinder); CHENGDU TIANCHANG NEW MATERIAL (Anmelder): CN 1948615 A (Maschinenübersetzung). 18.04.2007/abgerufen am 19.12.2017, Google patents [online]. * |
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WO2018188778A1 (en) | 2018-10-18 |
EP3596268A1 (en) | 2020-01-22 |
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