DE2843139C3 - Process for the production of molded parts from nonwovens containing synthetic resin - Google Patents

Process for the production of molded parts from nonwovens containing synthetic resin

Info

Publication number
DE2843139C3
DE2843139C3 DE2843139A DE2843139A DE2843139C3 DE 2843139 C3 DE2843139 C3 DE 2843139C3 DE 2843139 A DE2843139 A DE 2843139A DE 2843139 A DE2843139 A DE 2843139A DE 2843139 C3 DE2843139 C3 DE 2843139C3
Authority
DE
Germany
Prior art keywords
synthetic resin
molded parts
nonwovens
paper layers
blanks
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DE2843139A
Other languages
German (de)
Other versions
DE2843139A1 (en
DE2843139B2 (en
Inventor
Ernst 8192 Geretsried Pelz
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.)
Empe Autoteile 80807 Muenchen De GmbH
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE2843139A priority Critical patent/DE2843139C3/en
Publication of DE2843139A1 publication Critical patent/DE2843139A1/en
Publication of DE2843139B2 publication Critical patent/DE2843139B2/en
Application granted granted Critical
Publication of DE2843139C3 publication Critical patent/DE2843139C3/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • 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
    • B32B29/00—Layered products comprising a layer of paper or cardboard
    • B32B29/08—Corrugated paper or cardboard
    • 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
    • B32B5/00—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
    • 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
    • B32B5/022—Non-woven fabric

Description

Die Erfindung betrifft ein Verfahren zum Herstellen von Formteilen aus Kunstharz enthaltenden Faservliesen, bei dem zwei mit Kunstharz auf ihren einander zugekehrten Seiten beschichtete Vliese unter erhöhten Temperaturen und unter Anwendung von geringem Druck verpreßt werden, wobei an ihren Außenseiten mit Papierlagen vernadelte Zuschnitte aus Kokos- oder Jutefaservliesen verwendet werden, das Fertigpressen zu den Formteilen unmittelbar nach dem Beschichten erfolgt und dabei Temperatur, Druck und Menge an verwendetem Polyesterharz so aufeinander abgestimmt werden, daß im Inneren der Formteile Hohlräume verbleiben und eine Dichte von etwa 0,5 bis 0,6 erreicht wird, nach Patent 28 30 320.The invention relates to a method for producing molded parts from fiber webs containing synthetic resin, in which two nonwovens coated with synthetic resin on their facing sides under raised Temperatures and are pressed with the application of low pressure, with on their outsides blanks made of coconut or jute fiber fleeces needled with paper layers are used, the final pressing to the molded parts takes place immediately after the coating and thereby temperature, pressure and amount of The polyester resin used must be matched to one another in such a way that there are cavities inside the molded parts remain and a density of about 0.5 to 0.6 is achieved, according to patent 28 30 320.

Dem Vorschlag nach dem Hauptpatent liegt die Aufgabe zugrunde, ein Verfahren der nach dem nächstkommenden Stand der Technik bekannten Art soThe proposal according to the main patent is based on the task of a method according to the closest prior art known type so

ίο auszugestalten, daß es wirtschaftlicher durchführbar ist und daß mit ihm leichtgewichtigere Formteile mit guten Festigkeitseigenschaften mit relativ einfachem Werkzeug und in nur einem Preßvorgang herstellbar sind. Das Verfahren nach dem Hauptpatent hat sich bewährt, jedoch ist die Formbarkeit der mit den Papierlagen vernadelten Zuschnitte aus den Faservliesen begrenzt, weil das Papier die auftretende!. Streckkräfte nicht in allen Fällen aushält und reißt. Dies führt zu Rissen und Löchern im herzustellenden Werkstück, wodurch das Formteil unbrauchbar wird.ίο to design that it is more economically feasible and that with it lighter weight molded parts with good strength properties with relatively simple tools and can be produced in just one pressing process. The procedure according to the main patent has proven itself, however, the formability of the blanks needled with the paper layers from the nonwovens is a problem limited because the paper is the occurring !. Stretching forces does not withstand in all cases and tears. This leads to cracks and holes in the workpiece to be manufactured, whereby the molded part becomes unusable.

Es ist im Zusammenhang mit zu formenden Kunststoffteilen bekannt, gekrepptes Papier einzusetzen (»Kunststoffrundschau«, Heft 4, April 1961, Absatz im Übergang von Seite 205 bis Seite 206). Ferner ist es bei geformten Platten bekannt, an besonders beanspruchten Stellen Verstärkungseinlagen vorzusehen (DE-OS 26 02 839).It is known in connection with plastic parts to be molded to use creped paper ("Kunststoffrundschau", issue 4, April 1961, paragraph in the transition from page 205 to page 206). Furthermore it is in the case of shaped plates known to provide reinforcement inserts at particularly stressed areas (DE-OS 26 02 839).

In weiterer Ausgestaltung der Erfindung nach dem Hauptpatent ist zur Erzielung einer besseren Formbarkeit vorgesehen, daß für die Papierlagen gekrepptes oder gefaltetes Papier verwendet wird. Gekreppte oder gefaltete Papiere können sicn beim Einziehen in die Form dehnen. Sie geben den Zugbeanspruchungen nach und reißen nicht.In a further embodiment of the invention according to the main patent is to achieve better formability provided that creped or folded paper is used for the paper layers. Creped or folded papers can stretch as they are drawn into the shape. They yield to the tensile stresses and do not tear.

Ferner wird in weiterer Ausgestaltung der Erfindung nach dem Hauptpatent zur Vermeidung von Rissen und Löchern im herzustellenden Werkstück vorgeschlagen, Papierlagen zu verwenden, die in Bereichen starker Verformung perforiert oder geschlitzt sind und dort mitFurthermore, in a further embodiment of the invention according to the main patent to avoid cracks and Holes in the workpiece to be produced suggested to use paper layers that are stronger in areas Deformation perforated or slotted and there with

■to Teilstücken aus dem gleichen Faservliesmaterial unterlegt sind, aus dem die Zuschnitte bestehen.■ to sections made of the same fiber fleece material underlaid from which the blanks are made.

Hierdurch wird erreicht, daß zugelassen werden kann, daß das Vliesmaterial des Zuschnitts in den Bereichen starker Verformung sich verdünnt und bei sehr starkerThis ensures that it can be allowed that the nonwoven material of the blank in the areas strong deformation thins and with very strong

■»5 Streckung reißt. Ein völliges Aufreißen der Wandfläche des Formteils wird dann dadurch verhütet, daß das unterlegte Teilstück die Stelle abdeckt. Letzterer Vorschlag ist aus diesem Grunde besonders für die Fälle von Interesse, in denen tiefe Senkungen oder Beulen begrenzter Flächenausdehnung in das Formteil einzuformen sind.■ »5 stretching tears. A complete ripping open of the wall surface of the molded part is then prevented by the fact that the underlying part covers the point. The latter The suggestion is therefore of particular interest in cases where there are deep indentations or dents limited area are to be molded into the molded part.

Claims (2)

Patentansprüche:Patent claims: 1. Verfahren zum Herstellen von Formteilen aus Kunstharz enthaltenden Faservliesen, bei dem zwei mit Kunstharz auf ihren einander zugekehrten Seiten beschichtete Vliese unter erhöhten Temperaturen und unter Anwendung von geringem Druck verpreßt werden, wobei an ihren Außenseiten mit Papierlagen vernadelte Zuschnitte aus Kokos- oder Jutefaservliesen verwendet werden, das Fertigpressen zu den Formteilen unmittelbar nach dem Beschichten erfolgt und dabei Temperatur, Druck und Menge an verwendetem Polyesterharz so aufeinander abgestimmt werden, daß im Inneren der Formteile Hohlräume verbleiben und eine Dichte von etwa 0,5 bis 0,6 erreicht wird, nach Patent 28 30 320, dadurch gekennzeichnet, daß für die Papierlagen gekrepptes oder gefaltetes Papier verwendet wird1. A method for producing molded parts from synthetic resin-containing nonwovens, in which two nonwovens coated with synthetic resin on their facing sides at elevated temperatures and pressed with the application of low pressure, with on their outer sides with Paper layers needled blanks made of coconut or jute fiber fleeces are used, the final pressing to the molded parts takes place immediately after the coating and temperature, pressure and the amount of polyester resin used are coordinated so that inside the Moldings cavities remain and a density of about 0.5 to 0.6 is reached, according to the patent 28 30 320, characterized in that the paper layers are creped or folded Paper is used 2. Verfahren zum Herstellen von Formteilen aus Kunstharz enthaltenden Faservliesen, bei dem zwei mit Kunstharz auf ihren einander zugekehrten Seiten beschichtete Vliese unter erhöhten Temperaturen und unter Anwendung von geringem Druck verpreßt werden, wobei an ihren Außenseiten mit Papierlagen vernadelte Zuschnitte aus Kokos- oder Jutefaservliesen verwendet werden, das Fertigpressen zu den Formteilen unmittelbar nach dem Beschichten erfolgt und dabei Temperatur, Druck und Menge an verwendetem Polyesterharz so aufeinander abgestimmt werden, daß im Inneren der Formteile Hohlräume verbleiben und eine Dichte von etwa 04 bis 0,6 erreicht wird, nach Patent 28 30 320, dadurch gekennzeichnet, daß Papierlagen verwendet werden, die in Bereichen starker Verformung perforiert oder geschlitzt sind und dort mit Teilstücken dem gleichen Faservliesmaterial unterlegen sind, aus dem die Zuschnitte bestehen.2. A method for producing molded parts from synthetic resin-containing nonwovens, in which two nonwovens coated with synthetic resin on their facing sides at elevated temperatures and pressed with the application of low pressure, with on their outer sides with Paper layers needled blanks made of coconut or jute fiber fleeces are used, the final pressing to the molded parts takes place immediately after the coating and temperature, pressure and the amount of polyester resin used are coordinated so that inside the Moldings cavities remain and a density of about 04-0.6 is reached, according to patent 28 30 320, characterized in that paper layers are used in areas of strong deformation are perforated or slotted and there with parts of the same nonwoven material are inferior, of which the blanks are made.
DE2843139A 1978-10-03 1978-10-03 Process for the production of molded parts from nonwovens containing synthetic resin Expired DE2843139C3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE2843139A DE2843139C3 (en) 1978-10-03 1978-10-03 Process for the production of molded parts from nonwovens containing synthetic resin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2843139A DE2843139C3 (en) 1978-10-03 1978-10-03 Process for the production of molded parts from nonwovens containing synthetic resin

Publications (3)

Publication Number Publication Date
DE2843139A1 DE2843139A1 (en) 1980-04-10
DE2843139B2 DE2843139B2 (en) 1981-04-23
DE2843139C3 true DE2843139C3 (en) 1981-12-24

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
DE2843139A Expired DE2843139C3 (en) 1978-10-03 1978-10-03 Process for the production of molded parts from nonwovens containing synthetic resin

Country Status (1)

Country Link
DE (1) DE2843139C3 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3009465C2 (en) * 1980-03-10 1985-09-19 Lignotock Verfahrenstechnik Gmbh, 1000 Berlin Layered fiber mat for the production of three-dimensional molded parts in the dry process

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2336246A2 (en) * 1975-02-05 1977-07-22 Roth Sa Freres MANUFACTURING PROCESS OF SHAPED PANELS BASED ON CARDBOARD AND FOAM, AND PANELS THUS REALIZED

Also Published As

Publication number Publication date
DE2843139A1 (en) 1980-04-10
DE2843139B2 (en) 1981-04-23

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Legal Events

Date Code Title Description
OAP Request for examination filed
OD Request for examination
C3 Grant after two publication steps (3rd publication)
8327 Change in the person/name/address of the patent owner

Owner name: ERPE - ERNST PELZ - VERTRIEBS GMBH + CO - VERWALTU

8381 Inventor (new situation)

Free format text: PELZ, ERNST, 8192 GERETSRIED, VERSTORBEN, DE

8327 Change in the person/name/address of the patent owner

Owner name: EMPE-WERKE ERNST PELZ GMBH & CO KG, 82538 GERETSRI

8340 Patent of addition ceased/non-payment of fee of main patent
8327 Change in the person/name/address of the patent owner

Owner name: EMPE AUTOTEILE GMBH, 80807 MUENCHEN, DE