NO136564B - - Google Patents

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Publication number
NO136564B
NO136564B NO360469A NO360469A NO136564B NO 136564 B NO136564 B NO 136564B NO 360469 A NO360469 A NO 360469A NO 360469 A NO360469 A NO 360469A NO 136564 B NO136564 B NO 136564B
Authority
NO
Norway
Prior art keywords
mat
channels
grooves
glass fiber
designed
Prior art date
Application number
NO360469A
Other languages
Norwegian (no)
Other versions
NO136564C (en
Inventor
Viljar Kandre
Viktor Kandre
Original Assignee
Viljar Kandre
Viktor Kandre
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 Viljar Kandre, Viktor Kandre filed Critical Viljar Kandre
Publication of NO136564B publication Critical patent/NO136564B/no
Publication of NO136564C publication Critical patent/NO136564C/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/06Fibrous reinforcements only
    • B29C70/10Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres
    • B29C70/12Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of short length, e.g. in the form of a mat
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/12Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of short lengths, e.g. chopped filaments, staple fibres or bristles
    • B29K2105/128Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of short lengths, e.g. chopped filaments, staple fibres or bristles in the form of a mat

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Mechanical Engineering (AREA)
  • Reinforced Plastic Materials (AREA)
  • Laminated Bodies (AREA)

Description

Foreliggende oppfinnelse vedrorer en fremgangsmåte for å kle The present invention relates to a method for dressing

storre flater med glassfiberarmert harpiks ved pressing. larger surfaces with fiberglass-reinforced resin by pressing.

Glassfiberarmert harpiks består vanligvis av en glassfibermatte med forholdsvis lange fibre, ca. 50 mm, som er impregnert med en blanding av duroplast, vanligvis umettet polyester, fyllstoff, farvepigment, slippmiddel, herder, fortykkelsesmiddel og andre tilsetningsmidler. Denne matte skal efter "modning" ha en hoy viskositet, hvilket oppnås ved hjelp av fortykkelsesmiddelet. Glass fiber reinforced resin usually consists of a glass fiber mat with relatively long fibers, approx. 50 mm, which is impregnated with a mixture of duroplast, usually unsaturated polyester, filler, color pigment, release agent, hardener, thickener and other additives. After "ripening", this mat must have a high viscosity, which is achieved with the help of the thickening agent.

Ved pressingen fordres nemlig en hoy viskositet, for at plast-materialet skal kunne transportere glassfibre og fyllstoff under den praktiske flytning, uten at materialet går fra hverandre, During pressing, a high viscosity is required, in order for the plastic material to be able to transport glass fibers and filler during the practical movement, without the material breaking apart,

og for at matten ikke skal klebe under håndteringen. and so that the mat does not stick during handling.

Hvis en slik matte anvendes for å kle en storre, plan flate, If such a mat is used to cover a large, flat surface,

f.eks. en bordplate, er det stor risiko for at det ved pressing- e.g. a tabletop, there is a great risk that when pressing

en innesluttes luft mellom matten og pressplaten, spesielt hvis man ikke benytter et hoyt presstrykk, i størrelsesordenen 50- air is trapped between the mat and the pressure plate, especially if you do not use a high pressure, in the order of 50-

150 kp/cm . Hoyt presstrykk kan ofte ikke anvendes ved storre flater, dels fordi pressen da kan bli uokonomisk stor og dels fordi materialet som skal bekles, f.eks. tre, ikke tåler så 150 kp/cm. High pressing pressure often cannot be used for large surfaces, partly because the press can then become uneconomically large and partly because the material to be coated, e.g. wood, can't stand it

store trykk. Det må således anvendes lavere presstrykk, i stor-relsesordenen 5-50 kp/cm . Ved anvendelse av lavere presstrykk blir risikoen for luftinneslutninger imidlertid meget stor. Luftinneslutninger forårsaker blærer i den ferdige flate, hvilket svekker flaten og lett kan forårsake brudd i bekledningsmatten. large pressures. A lower pressing pressure must therefore be used, in the order of magnitude 5-50 kp/cm. However, when lower pressures are used, the risk of air inclusions is very high. Air entrapment causes blisters in the finished surface, which weakens the surface and can easily cause breakage in the upholstery mat.

Fra sveitsisk patentskrift nr. 434.714 kjennes en fremgangsmåte A method is known from Swiss patent document no. 434,714

for fremstilling av isolasjonslegemer under anvendelse av et kjernelag av varmeisolerende materiale mellom to forsterknings- for the production of insulating bodies using a core layer of heat-insulating material between two reinforcing

lag av fibermateriale, som ikke er tidligere impregnert. Lagene layer of fiber material, which has not been previously impregnated. The teams

anbringes i en form, og plast innledes i formen for impregnering av fibermaterialet. Kjernelagets overflate har spor, gjennom hvilke plasten kan stromme for oppnåelse av fullstendig impregnering av fiberlagene. Disse spor forsvinner ikke ved formingen, og der nevnes ikke noe i patentskriftet om at luftinneslutninger vil unnslippe gjennom disse spor. is placed in a form, and plastic is introduced into the form for impregnation of the fiber material. The surface of the core layer has grooves through which the plastic can flow to achieve complete impregnation of the fiber layers. These grooves do not disappear during shaping, and there is no mention in the patent document that air inclusions will escape through these grooves.

Fra dansk patentskrift nr. 108.882 kjennes en fremgangsmåte for fremstilling av gjenstander av syntetisk harpiksmateriale. Oppå ett eller flere lag fibrost materiale anbringes et lag av av-standsgivende materiale, som har fordelingskanaler ved overfla-ten, f.eks. oppnådd ved at materialet består av termoplasttråder, såkalt "netlon". Også her vil kanalene således bli tilbake i det ferdige produkt, og kanalenes oppgave er i forste rekke å fordele harpiksstrommen i materialet. Danish patent document no. 108,882 discloses a method for producing objects from synthetic resin material. On top of one or more layers of fibrous material, a layer of spacer material is placed, which has distribution channels at the surface, e.g. achieved by the material consisting of thermoplastic threads, so-called "netlon". Here, too, the channels will thus remain in the finished product, and the channels' task is primarily to distribute the resin flow in the material.

Fremgangsmåten ifolge oppfinnelsen for å kle storre flater med glassfiberarmert harpiks ved pressing er av den kjente type, The method according to the invention for covering large surfaces with glass fiber-reinforced resin by pressing is of the known type,

ved hvilken en selvbærende, harpiksimpregnert, klebefri glassfibermatte anbringes på flaten og presses ved lavt trykk med en pressplate, idet harpiksen herdes. Den foreliggende oppfinnelse har i forhold til kjent teknikk den fordel at pressingen kan skje ved lavt trykk uten risiko for luftinneslutninger av den for beskrevne type, og det dannes ikke blivende kanaler eller riller i det ferdige produkt. in which a self-supporting, resin-impregnated, non-adhesive fiberglass mat is placed on the surface and pressed at low pressure with a press plate, as the resin hardens. Compared to prior art, the present invention has the advantage that the pressing can take place at low pressure without the risk of air inclusions of the type described above, and no permanent channels or grooves are formed in the finished product.

Dette oppnås ifolge oppfinnelsen ved at glassfibermattens overflate utformes med kanaler eller riller, som forloper til i det minste én av mattens ytterkanter, at den således utformede matte anbringes på den flate som skal bekles, fortrinnsvis med kanalene vendt mot pressplaten, og at der utoves et trykk på matten, slik at kanalene forsvinner ved at de trykkes sammen og fylles med mattemateriale. Eventuelt innesluttet luft får anledning til å komme ut ved pressingens begynnelse, slik at det ikke dannes luftblærer i massen. Kanalene eller rillene er som nevnt fortrinnsvis anbragt på den side av matten som vender mot pressplaten, spesielt hvor det dreier seg om bekledning av gjenstander av porost materiale, i hvilke tilfeller den luft som innesluttes mellom matten og- gjenstanden trykkes inn i gjenstanden. Ved en foretrukket utforelsesform for fremgangsmåten ifolge oppfinnelsen er kanalene eller rillene utformet med jevnt voksende tverrsnitt fra midten av matten og ut mot dens ytterkant eller -kanter. Ved denne utformning oppnås en fordelaktig stromning av luften utad, da materialet' og luften presses utad fra midten av matte og pressplate mot kantene samtidig med at kanalene eller rillene trykkes sammen, fylles med materiale og forsvinner, "hvorved matten oppnår en jevn og glatt overflate uten luftinneslutninger. Ved denne utformning av kanalene eller rillene elimineres enhver mulighet for at luft kan bli værende i matten. According to the invention, this is achieved by the surface of the glass fiber mat being designed with channels or grooves, which extend to at least one of the outer edges of the mat, that the mat designed in this way is placed on the surface to be covered, preferably with the channels facing the press plate, and that there is also a press on the mat, so that the channels disappear by being pressed together and filled with mat material. Any trapped air is given the opportunity to escape at the beginning of pressing, so that no air bubbles form in the mass. As mentioned, the channels or grooves are preferably placed on the side of the mat that faces the pressure plate, especially where it concerns the cladding of objects made of porous material, in which cases the air trapped between the mat and the object is pressed into the object. In a preferred embodiment of the method according to the invention, the channels or grooves are designed with evenly growing cross-sections from the center of the mat towards its outer edge or edges. With this design, an advantageous outward flow of the air is achieved, as the material and the air are pushed outwards from the center of the mat and pressure plate towards the edges at the same time that the channels or grooves are pressed together, filled with material and disappear, "whereby the mat achieves an even and smooth surface without air inclusions.This design of the channels or grooves eliminates any possibility of air remaining in the mat.

Ved fremgangsmåten ifolge oppfinnelsen kan pressingen utfores med forholdsvis lavt trykk og konvensjonelle presser anvendes, hvilket gjor metoden okonomisk og i det hele tatt muliggjor anvendelse av materiale av den beskrevne type for å kle storre flater. In the method according to the invention, the pressing can be carried out with relatively low pressure and conventional presses can be used, which makes the method economical and, in general, enables the use of material of the described type to cover larger surfaces.

Claims (2)

1. Fremgangsmåte for å kle storre flater med glassfiberarmert harpiks ved pressing, ved hvilken en selvbærende, harpiksimpregnert, klebefri glassfibermatte anbringes på flaten og presses ved lavt trykk med en pressplate, idet harpiksen herdes, karakterisert ved at glassfibermattens overflate utformes med kanaler, eller riller, som forloper til i det minste én av mattens ytterkanter, at den således utformede matte anbringes på den flate som skal bekles, fortrinnsvis med kanalene vendt mot pressplaten, og at der utoves et trykk på matten slik at kanalene forsvinner ved at de trykkes sammen og fylles med mattemateriale.1. Method for covering large surfaces with glass fiber reinforced resin by pressing, in which a self-supporting, resin-impregnated, non-sticky glass fiber mat is placed on the surface and pressed at low pressure with a press plate, as the resin hardens, characterized in that the surface of the glass fiber mat is designed with channels, or grooves , which extends to at least one of the outer edges of the mat, that the thus designed mat is placed on the surface to be covered, preferably with the channels facing the pressure plate, and that a pressure is applied to the mat so that the channels disappear by being pressed together and filled with mat material. 2. Fremgangsmåte som angitt i krav 1, karakterisert ved at kanalene eller rillene er utformet med jevnt voksende tverrsnitt fra midten av matten og ut mot dens ytterkant eller -kanter.2. Method as stated in claim 1, characterized in that the channels or grooves are designed with evenly growing cross-sections from the center of the mat and out towards its outer edge or edges.
NO360469A 1968-09-25 1969-09-09 PROCEDURE FOR LARGE LARGER SURFACES WITH GLASS FIBER REINFORCED RESIN BY PRESSING. NO136564C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE1292168A SE320488B (en) 1968-09-25 1968-09-25

Publications (2)

Publication Number Publication Date
NO136564B true NO136564B (en) 1977-06-20
NO136564C NO136564C (en) 1977-09-28

Family

ID=20296534

Family Applications (1)

Application Number Title Priority Date Filing Date
NO360469A NO136564C (en) 1968-09-25 1969-09-09 PROCEDURE FOR LARGE LARGER SURFACES WITH GLASS FIBER REINFORCED RESIN BY PRESSING.

Country Status (5)

Country Link
DE (1) DE1947434C3 (en)
DK (1) DK130714B (en)
FI (1) FI48546C (en)
NO (1) NO136564C (en)
SE (1) SE320488B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2910234C2 (en) * 1979-03-15 1983-05-26 Alkor GmbH Kunststoffverkauf, 8000 München Process for the production of a shaped body from a carrier plate with a decorative layer
WO2009133143A1 (en) 2008-04-30 2009-11-05 Vestas Wind Systems A/S A consolidated composite pre-from

Also Published As

Publication number Publication date
FI48546C (en) 1974-11-11
DE1947434A1 (en) 1970-04-02
DK130714B (en) 1975-04-01
SE320488B (en) 1970-02-09
FI48546B (en) 1974-07-31
DE1947434B2 (en) 1978-03-30
DK130714C (en) 1975-09-29
DE1947434C3 (en) 1978-12-07
NO136564C (en) 1977-09-28

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