CS226340B1 - Separating layer - Google Patents
Separating layer Download PDFInfo
- Publication number
- CS226340B1 CS226340B1 CS549282A CS549282A CS226340B1 CS 226340 B1 CS226340 B1 CS 226340B1 CS 549282 A CS549282 A CS 549282A CS 549282 A CS549282 A CS 549282A CS 226340 B1 CS226340 B1 CS 226340B1
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- CS
- Czechoslovakia
- Prior art keywords
- film
- pressing
- foil
- press
- pressed
- Prior art date
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- 239000000463 material Substances 0.000 claims description 13
- 229920006378 biaxially oriented polypropylene Polymers 0.000 claims description 11
- 239000011127 biaxially oriented polypropylene Substances 0.000 claims description 11
- 239000011230 binding agent Substances 0.000 claims description 6
- 230000002787 reinforcement Effects 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims 1
- 238000003825 pressing Methods 0.000 description 13
- 239000011888 foil Substances 0.000 description 7
- 229920002620 polyvinyl fluoride Polymers 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- 239000004744 fabric Substances 0.000 description 4
- 238000000926 separation method Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000004577 thatch Substances 0.000 description 3
- 239000004593 Epoxy Substances 0.000 description 2
- XUMBMVFBXHLACL-UHFFFAOYSA-N Melanin Chemical compound O=C1C(=O)C(C2=CNC3=C(C(C(=O)C4=C32)=O)C)=C2C4=CNC2=C1C XUMBMVFBXHLACL-UHFFFAOYSA-N 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 238000011179 visual inspection Methods 0.000 description 2
- 206010067472 Organising pneumonia Diseases 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 208000023367 bronchiolitis obliterans with obstructive pulmonary disease Diseases 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 201000009805 cryptogenic organizing pneumonia Diseases 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000005341 toughened glass Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Landscapes
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Description
Vynález rieši problematiku separácie lisovacích plechov ako aj jednotlivých vrstiev tvrdených materiálov medzi sebou pri a po lisovaní.The invention solves the problem of separation of press sheets as well as individual layers of hardened materials during and after pressing.
V súčasnosti stí známe rfizne spfisoby separácie lisovacích plechov od lisovaných tvrdených materiálov i ich vzájomnéj separácie při a po lisovaní, ktoré spočívajú v nanášení ršznych separačných látok ako stí oleje, prášky na styíné plochy. Ako najprogresívnejSím sa ukázal spOsob separácie, ktorý využívá vlastnosti polyvinylfluoridovej fólie (5alej PVF-fólia), ktorá sa vkládá ako separačná vrstva medzi lisovacie plechy a povrch lisovaného tvrdeného materiálu, a medzi jednotlivé vrstvy tvrdeného materiálu.There are currently known methods for separating press sheets from pressed hardened materials as well as their mutual separation during and after pressing, which consist in the application of various separating substances such as oil shields, powders to the surface areas. The most progressive separation method has been found to take advantage of the properties of a polyvinyl fluoride film (PVF film) which is inserted as a separating layer between the press sheets and the surface of the molded hardened material, and between the individual layers of the hardened material.
Nevýhodou tejto PVF-fólie je, že pri vyšších teplotách okolo 170 °C sa čiastočne narúša, zvyšuje sa přitom jej priepustnost plynov a pár vznikajúcich pri lisovaní, čo- spatné zvyšuje deštrukciu fólie a táto účinkom lisovacieho tlaku prilnieva na lisovacie plechy a rozkladné produkty je potřebné po lisovaní mechanicky z ich povrchu odstraňovat. Salěou nevýhodou doteraz používanej PVF-fólie je, že při lisovaní plátovaných tvrdených materiálov, vytvárajú tieto odpadně produkty s Cu-fóliou film, ktorý potom zabraňuje leptaniu medenej fólie. PVF-fólia je nepriehTačná a teda neumožňuje okamžitá vizuálnu kontrolu povrchu lisovaného materiálu, a má vysokú špecifiokú hmotnost, čo vyžaduje zvýšené úsilie pri manipulácii.The disadvantage of this PVF film is that it is partially disturbed at higher temperatures of about 170 ° C, increasing the permeability of the gases and vapors resulting from the pressing, which in turn increases the destruction of the film and adheres to the pressing plates and decomposition products under the pressing pressure. need to be removed mechanically from their surface after pressing. A disadvantage of the PVF film used hitherto is that, when pressing clad hardened materials, these waste products with a Cu film form a film which then prevents the copper foil from being etched. The PVF film is non-transparent and thus does not allow immediate visual inspection of the surface of the molded material, and has a high specific weight, which requires increased handling effort.
Uvedené nedostatky odstraňuje riešenie podl’a vynálezu, ktorého podstata spočívá v použití plošné biaxiálne orientovanej polypropylénovej fólie ako separačnej vrstvy pri lisovaní tvrdených materiálov z výstuží so živičnými spojivsmi. Použitie tejto fólie je umožněné zistením novej vlastnosti, že uvedená folia pri tlakoch od 1 do 20 MPa je tepelne odolná, stála a nelepivá v tepelnom intervale až db 175 °C. Přitom tepelná odolnost a stálost plošné orientovanej biaxiélnej fólie za normálnych podmienok je len do 130 °C. Doteraz sa používá len ako obalový materiál.The above-mentioned drawbacks are overcome by the solution according to the invention, which is based on the use of a flat biaxially oriented polypropylene film as a release layer in the pressing of hardened materials from bituminous binder reinforcements. The use of this film is made possible by the discovery of a new property that said film at temperatures of from 1 to 20 MPa is heat resistant, stable and non-sticky in a temperature range of up to 175 ° C. The thermal resistance and stability of the sheet-oriented biaxial film under normal conditions is only up to 130 ° C. Until now, it is only used as packaging material.
Výhodou riešenia podl’a vynálezu je, že ploáne orientovaná biaxiálna polypropylénová' folia (3alej BOOP)' sa při tlakoch od 1 do 20 MPa a teplote do 175 °G nerozkládá, netaví a ostává súdržná, pričom nevytvára chemické vazby ani s organickými ani anorganickými tkaninami, rohožami, papiermi, ani so živičnými spojivami epoxidovými, fenoliekými, melanínovými, polyesterovými, močovinovými a silikonovými. Při lisovaní vykazuje malé adézne sily k lisovacím plechom resp. k povrchom lisovaných tvrdených materiálov, čo znamená, že na jej oddelenie z povrchov po lisovaní je potřebná sila menšia ako 10 N na 1 metr fólie.The advantage of the solution according to the invention is that the planar oriented biaxial polypropylene film (3 BOOP) does not decompose, melt and remain cohesive at pressures of 1 to 20 MPa and a temperature of up to 175 ° C, and does not form chemical bonds with either organic or inorganic woven fabrics, mats, papers, or epoxy, phenolic, melanin, polyester, urea and silicone bituminous binders. During the pressing process it exhibits low adhesion forces to the pressing plates or to the pressing plates. to the surfaces of the pressed hardened materials, which means that a force of less than 10 N per meter of film is required to separate it from the surfaces after compression.
fialšími výhodami použitia plošné biaxiálne orientovanej polypropylénovej fólie je, že folia je priehTadná a preto umožňuje před i po lisovaní vizuálnu kontrolu povrchov lisovaných materiálov. Výhodné je jej nízká měrná hmotnost, ktorá je 910 kg/m^, voči doteraz používanéj polyvinylfluoridovej fólii s měrnou hmotnosťou 1 410 kg/m\ Při rovnakej východzej hrúbke 0,025 mm oboch porovnávaných fólií je možné z 1 kg BOPP-fólie vyhotovit foliu b o , o ploché 44 m voči 2B,4 m plochy folie PVF, čo znamená podstatné Tahšiu manipuláciu pri vnášani separačnej vrstvy medzi lisovaný materiál, pri výhodných ekonomických reláciach. Látky, ktoré v malej miere pri mnohonásobnom lisovaní ulpievajú na povrchu plátovaného mateři álu z BOPP-fólie, nezhoršujú leptanie Cu-fólie. To umožňuje výhodné používaf plošné biaxiálne orientovanú polypropylénová foliu ako separačnú vrstvu pri lisovaní doškových skloepoxidových laminátov jednostranné plátovaných Cu-fóliou.The more violent advantages of using a flat biaxially oriented polypropylene film are that the film is transparent and therefore allows visual inspection of the surfaces of the pressed materials before and after pressing. Its low density, which is 910 kg / m < 2 >, is preferred over the previously used polyvinyl fluoride film having a specific weight of 1410 kg / m < 2 > 44 m flat with respect to 2B, 4 m of PVF film surface, which means substantially easier handling during the introduction of the separating layer between the molded material, at advantageous economic relations. Substances which adhere to the surface of the clad BOPP foil to a small extent do not exacerbate the etching of the Cu foil to a small extent during multiple pressing. This makes it possible advantageously to use a planar biaxially oriented polypropylene film as a release layer in the compression of thatched glass-epoxy laminates with one-sided Cu-foil cladding.
Příklad použitia BOPP-fólie jě nasledovný:An example of using BOPP film is as follows:
Příklad 1Example 1
Na lisovací nerezový plech sa položí BOPP-fólia hrůbky 0,03 mm, na ňu sa položí potřebný počet vrstiev sklenej tkaniny impregnovanej epoxidovou živicou a Cu-fólia. Na Gu-fóliu sa položí další lisovací plech, na ktorý možno skladať materiál potřebný pre dalšiu došku. Takto připravený určitý počet vrstiev sa vsunie do lisu a lisuje sa pri tlaku 7 MPa a teplote 155 °C po dobu 130 minút, kedy dochádza k vytvrdeniu živičného spojiva a vytvoreniu tvrdenej sklene*j tkaniny plátovanej s Cu-fóliou. Po ochladení na 30 °C sa vylisované došky vyberú z lisu. BOPP-fólia sa mdže z laminátu sňat ihned alebo až po dalšom spracovaní, čím zároveň chrání jeho povrch počas spracovania.A 0.03 mm BOPP foil is placed on the stainless steel press sheet, and the necessary number of layers of epoxy resin impregnated glass fabric and Cu foil are placed thereon. A further press plate is placed on the Gu-foil on which the material needed for the next thatch can be laid. A plurality of layers thus prepared are inserted into a press and pressed at a pressure of 7 MPa and a temperature of 155 ° C for 130 minutes to cure the bituminous binder and form a toughened glass sheet of Cu-foil clad fabric. After cooling to 30 [deg.] C., the pressed thatch is removed from the press. The BOPP film can be removed from the laminate immediately or after further processing, thereby protecting its surface during processing.
Příklad 2Example 2
Na lisovací plech sa položia dve plošné orientované biaxiálne polypropylénové fólie hrůbky 0,03 mm, na ktoré sa potom položí určitý počet hárkov prepregu sklenej tkaniny impregnovanej živičným spojlvom pozostávajúcim z 30 dielov fenolickej a 70 dielov epoxidové j živice. Na hárky prepregu sa potom položia znova 2BOPP-fólie hrůbky 0,03 mm a na ne lisovací plech. Na tento sa m9žu ukladat dalšie BOPP-fólie a hárky prepregu opakované. NiekoTko takýchto vrstiev sa potom vkládá do lisu a lisuje sa za tlaku 5,5 MPa a teplote 160 °C po dobu 100 minút. Po ochladení a vybratí dosiek z lisu možno BOPP-fóliu sňat z laminátu alebo došky expedovat s priTahnutými povrch chrániacimi fóliemi.Two flat biaxial polypropylene foils of 0.03 mm thickness are placed on the press sheet, and then a number of sheets of prepreg of a glass cloth impregnated with a bituminous bond consisting of 30 parts of phenolic and 70 parts of epoxy resin are then laid. 2BOPP foils of 0.03 mm thickness are then placed on the prepreg sheets again, and a press plate is placed on them. Additional BOPP films and prepreg sheets may be deposited on this. Several of these layers are then placed in a press and pressed at a pressure of 5.5 MPa and a temperature of 160 ° C for 100 minutes. After cooling and removal of the plates from the press, the BOPP foil can be removed from the laminate or thatch with the surface-tightened foil protectors.
Použitie plošné biaxiálne orientovanej polypropylénovej fólie ako separačnej vrstvy je možné okrem lisovaných tvrdených materiálov so živičnými spojivami pre elektrotechnické účely použit pri výrobě lisovaných tvrdených.laminátov ž tkanin, rohoží i papiera s režnými druhmi živičných spojiv, kde na vytvrdenie spojiva sú potřebné vyššie teploty: od 130° do 175 °C za tlaku, pre rčzne účely.The use of a flat biaxially oriented polypropylene film as a release layer can be used, in addition to pressed hardened materials with bituminous binders for electrotechnical purposes, in the production of pressed hardened laminates from fabrics, mats and paper with ordinary types of bituminous binders. 130 ° to 175 ° C under pressure, for various purposes.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS549282A CS226340B1 (en) | 1982-07-19 | 1982-07-19 | Separating layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS549282A CS226340B1 (en) | 1982-07-19 | 1982-07-19 | Separating layer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CS226340B1 true CS226340B1 (en) | 1984-03-19 |
Family
ID=5399910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS549282A CS226340B1 (en) | 1982-07-19 | 1982-07-19 | Separating layer |
Country Status (1)
| Country | Link |
|---|---|
| CS (1) | CS226340B1 (en) |
-
1982
- 1982-07-19 CS CS549282A patent/CS226340B1/en unknown
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