NL7902647A - METHOD FOR DEFORMING BOTTLE PLATES FROM THERMOPLASTIC PLASTICS. - Google Patents

METHOD FOR DEFORMING BOTTLE PLATES FROM THERMOPLASTIC PLASTICS. Download PDF

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Publication number
NL7902647A
NL7902647A NL7902647A NL7902647A NL7902647A NL 7902647 A NL7902647 A NL 7902647A NL 7902647 A NL7902647 A NL 7902647A NL 7902647 A NL7902647 A NL 7902647A NL 7902647 A NL7902647 A NL 7902647A
Authority
NL
Netherlands
Prior art keywords
shows
deformation
deforming
baffle plate
welding
Prior art date
Application number
NL7902647A
Other languages
Dutch (nl)
Original Assignee
Bayer Italia Spa
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 Bayer Italia Spa filed Critical Bayer Italia Spa
Publication of NL7902647A publication Critical patent/NL7902647A/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
    • B29C67/0044—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 for shaping edges or extremities
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/006—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor for making articles having hollow walls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/02—Bending or folding
    • B29C53/04—Bending or folding of plates or sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2024/00—Articles with hollow walls
    • B29L2024/006—Articles with hollow walls multi-channelled
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2025/00—Frameless domes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/778—Windows
    • B29L2031/7782—Glazing

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)

Description

% %%%

Bayer Italia S.p.A., te Milaan, Italië.Bayer Italia S.p.A., Milan, Italy.

Werkwijze voor het vervormen van schotplaten uit thermoplastische kunststoffen.Method for deforming baffle plates from thermoplastic plastics.

Deze uitvinding "betreft een werkwijze voor de vervorming van schotplaten uit thermoplastische kunststoffen, hetzij met "behulp van onderdruk of overdruk hetzij met "behulp van mallen en contra-stempels, waarbij nu de roosterstructuur van de steungevende dwarss chot-5 ten verregaand intact blijft.The present invention relates to a method for deforming bulkhead plates from thermoplastic plastics, either by means of underpressure or overpressure or by means of molds and counter-dies, wherein the grating structure of the supporting transverse chot-5 now remains largely intact.

Schotplaten (dat zijn holle platen met versterkende dwarsschotjes) worden gewoonlijk van uiteenlopende thermoplastische kunststoffen gemaakt, in dikten tussen 3 en 15 mm, en met gewichten tus- p sen 1+00 en 3000 g/m . Dergelijke schotplaten vertonen ten opzichte van 10 hun gewicht een opmerkelijk hoge stijfheid.Baffle plates (which are hollow plates with reinforcing transverse baffles) are usually made of various thermoplastic plastics, in thicknesses between 3 and 15 mm, and with weights between 1 + 00 and 3000 g / m. Baffle plates of this type exhibit remarkably high rigidity relative to their weight.

Voor vele technische toepassingen zou het wenselijk zijn deze schotplaten op in de techniek bekende wijze koud te vervormen.For many technical applications it would be desirable to cold-form these baffle plates in a manner known in the art.

Helaas was het tot nog toe niet mogelijk schotplaten koud te vervormen zonder dat de ondersteunende dwarsschotjes meer of minder vervormd vor-15 den, waarbij de stevigheid ongunstig beïnvloed wordt. In figuur 1 ziet men een schotplaat die in het midden aanzienlijk dunner geworden is, en in de deelvergroting ziet men dat de dwarsschotten daar lelijk misvormd zijn. In figuur 2 ziet men dat het buitenoppervlak tussen de dwarsschotjes een beetje ingezakt is, waardoor er een soort ribbelstructuur 20 optreedt, waaraan men kan zien waar zich in het binnenste de dwarsschotjes bevinden.Unfortunately, it has hitherto not been possible to cold-form bulkhead plates without the supporting cross-members becoming more or less deformed, thereby affecting firmness. Figure 1 shows a bulkhead plate that has become considerably thinner in the middle, and the partial enlargement shows that the transverse bulkheads there are ugly deformed. In figure 2 it can be seen that the outer surface between the transverse stiffeners has slightly collapsed, so that a kind of corrugated structure 20 occurs, from which it can be seen where the transverse stiffeners are located in the interior.

Nu werd gevonden dat deze storingen van de schotplaten bij de vervorming vermeden kunnen worden als in de afzonderlijke kanalen tussen de schotjes lucht ingesloten wordt, hetzij door samen-25 drukken of aan elkaar lassen van de smalle randen of door het afsluiten van de afzonderlijke kanalen door afdichtingsonderdelen.It has now been found that these distortion of the baffle plates during deformation can be avoided if air is enclosed in the individual channels between the baffles, either by compressing or welding the narrow edges together or by sealing the individual channels by sealing parts.

Het is verrassend dat de lucht die in de kanalen tussen de dwarsschotjes ingesloten zit, voldoende is om het inzakken van 79026 47It is surprising that the air trapped in the channels between the cross stiffeners is enough to collapse 79026 47

Claims (1)

5 In vergelijking met de tot nog toe daarvoor gebruikelijke materialen, zoals geperst karton, polymeer-schuimen en met hars geïmpregneerde vezels, vertonen de schotplaten volgens de uitvinding de volgende voordelen: hoge stijfheid en toch elastisch, goed isolerend vermogen, laag gewicht, het inbouwen van versterkingen is niet beslist nodig, daar het materiaal 10 zelfdragend is, en ze zijn ongevoelig voor vocht. In figuur 3A ziet men in doorsnede een schotplaat uit thermoplastisch materiaal voor de vervorming, In figuur 3B ziet men dezelfde plaat nadat de smalle zijkanten door samenpersen gesloten zijn (dit kan ook door lassen of op andere wijze gebeuren). In figuur 3C 15 ziet men zo'n schotplaat na de vervorming. In figuur 3D ziet men een bovenaanzicht van een vervormde schotplaat, met aanduiding van de (niet-zichtbare) dwarsschotten. C o n c 1 u s ie Werkwijze voor het vervormen van schotplaten uit 20 thermoplastisch materiaal bij lage temperatuur, hetzij onder toepassing van onderdruk of overdruk of met behulp van een mal en contrastenpel, met het kenmerk, dat voor de vervorming van de schotplaat de afzonderlijke kanalen tussen de dwarsschotten afgedicht worden, hetzij door samenpersen, hetzij door lassen, hetzij door toepassing van afdichtende 25 elementen. 790 26 47Compared to previously customary materials, such as pressed cardboard, polymer foams and resin-impregnated fibers, the baffle plates of the invention exhibit the following advantages: high rigidity, yet elastic, good insulating ability, low weight, installation reinforcements are not absolutely necessary, since the material 10 is self-supporting, and they are insensitive to moisture. Figure 3A shows a baffle plate made of thermoplastic material for the deformation in section. Figure 3B shows the same plate after the narrow sides have been closed by compression (this can also be done by welding or otherwise). Figure 3C 15 shows such a baffle plate after the deformation. Figure 3D shows a top view of a deformed bulkhead plate, with an indication of the (invisible) transverse bulkheads. C onc 1 usie Method for deforming baffle plates from thermoplastic material at low temperature, either using underpressure or overpressure or using a mold and contrasting pad, characterized in that for the deformation of the baffle plate the individual channels between the transverse partitions are sealed, either by compression, by welding, or by using sealing elements. 790 26 47
NL7902647A 1979-01-15 1979-04-04 METHOD FOR DEFORMING BOTTLE PLATES FROM THERMOPLASTIC PLASTICS. NL7902647A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT1929979 1979-01-15
IT7919299A IT7919299A0 (en) 1979-01-15 1979-01-15 PROCEDURE FOR FORMING HOLLOW SHEETS OF THERMOPLASTIC RESINS.

Publications (1)

Publication Number Publication Date
NL7902647A true NL7902647A (en) 1980-07-17

Family

ID=11156533

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7902647A NL7902647A (en) 1979-01-15 1979-04-04 METHOD FOR DEFORMING BOTTLE PLATES FROM THERMOPLASTIC PLASTICS.

Country Status (10)

Country Link
JP (1) JPS55113522A (en)
AT (1) AT369692B (en)
BE (1) BE881114A (en)
DE (1) DE2912772A1 (en)
ES (1) ES487696A0 (en)
FR (1) FR2446162A1 (en)
GB (1) GB2039824B (en)
IT (1) IT7919299A0 (en)
NL (1) NL7902647A (en)
SE (1) SE7902362L (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0345221Y2 (en) * 1985-10-03 1991-09-25
FR2607434B1 (en) * 1986-11-28 1989-02-24 Beghin Say Sa PROCESS FOR THERMOFORMING A DOUBLE-WALLED PLATE
FR2698901B3 (en) * 1992-12-07 1994-10-28 Ecodis Sa Method of manufacturing a dome for the overhead lighting and the dome obtained.
NL9402035A (en) * 1994-12-02 1996-07-01 Shannon Bv Method for applying sealing edges in panels of thermoplastic material and an assembly therefor.
DE19918784C1 (en) * 1999-04-26 2001-01-18 Kr Porsiplast Verpackungssys Process for deforming hollow body panels made of thermoplastic material
DE19918783A1 (en) 1999-04-26 2000-11-02 Kr Porsiplast Verpackungssys Method and device for deforming hollow bodies made of thermoplastic material
FI115391B (en) 2001-10-03 2005-04-29 Kwh Pipe Ab Oy A method for manufacturing a lightweight container end and a container having such an end
DE10253119A1 (en) * 2002-11-13 2004-06-03 Happich Fahrzeug- Und Industrieteile Gmbh Method for producing an outer door element and outer door element

Also Published As

Publication number Publication date
GB2039824A (en) 1980-08-20
ES8100147A1 (en) 1980-11-01
JPS55113522A (en) 1980-09-02
ATA225779A (en) 1982-06-15
AT369692B (en) 1983-01-25
GB2039824B (en) 1982-12-22
FR2446162A1 (en) 1980-08-08
SE7902362L (en) 1980-07-16
ES487696A0 (en) 1980-11-01
BE881114A (en) 1980-07-11
DE2912772A1 (en) 1980-07-24
IT7919299A0 (en) 1979-01-15

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