DE3523779A1 - Plastics body made of closed-pored plastics foam, with recesses in the form of undercuts, and a mould with which these recesses can be pressed into the material - Google Patents
Plastics body made of closed-pored plastics foam, with recesses in the form of undercuts, and a mould with which these recesses can be pressed into the materialInfo
- Publication number
- DE3523779A1 DE3523779A1 DE19853523779 DE3523779A DE3523779A1 DE 3523779 A1 DE3523779 A1 DE 3523779A1 DE 19853523779 DE19853523779 DE 19853523779 DE 3523779 A DE3523779 A DE 3523779A DE 3523779 A1 DE3523779 A1 DE 3523779A1
- Authority
- DE
- Germany
- Prior art keywords
- recesses
- closed
- pressed
- plastics
- plastic
- 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.)
- Withdrawn
Links
- 239000004033 plastic Substances 0.000 title claims description 19
- 229920003023 plastic Polymers 0.000 title claims description 19
- 239000000463 material Substances 0.000 title claims description 13
- 239000006260 foam Substances 0.000 title 1
- 239000002184 metal Substances 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 239000002984 plastic foam Substances 0.000 claims description 6
- 239000011148 porous material Substances 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 claims description 4
- 239000002023 wood Substances 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000003599 detergent Substances 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 239000002985 plastic film Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000010137 moulding (plastic) Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/02—Perforating by punching, e.g. with relatively-reciprocating punch and bed
- B26F1/14—Punching tools; Punching dies
-
- 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
- B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
- B29C37/0078—Measures or configurations for obtaining anchoring effects in the contact areas between layers
- B29C37/0082—Mechanical anchoring
-
- 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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/56—After-treatment of articles, e.g. for altering the shape
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
Description
Die Erfindung betrifft Kunststoffplatten oder Kunst stofformteile aus geschlossenporigem Kunststoffschaum mit hinterschnittartigen Vertiefungen, sowie einem Werkzeug mit der diese Vertiefungen in das Material eingepresst werden konnen.The invention relates to plastic sheets or art molded parts made of closed-pore plastic foam with undercut-like depressions, as well as a Tool with these indentations in the material can be pressed.
Kunststoffplatten oder Kunststofformteile die mittels einer Haftmasse mit einem Reinigungsmittelkörper ver bunden werden können sind bekannt. (DE P 28 25 529./-41 C 11D17/02 und EP 0 006 200, sowie G 81 07 787.4 C 11D17/o 4).Plastic sheets or plastic moldings which by an adhesive with a detergent body are known to be bound. (DE P 28 25 529./-41 C 11D17 / 02 and EP 0 006 200, and G 81 07 787.4 C 11D17 / o 4).
Das Ausgangsmaterial aus dem die eingangs erwähnten Kunststoffkörper hergestellt werden, sind handelsübliche dünne extrudierte Folien in Plattenform, meist 0,80 m × 1,20 m, die wie sich herausgestellt hat, sich statisch aufladen und dabei mit augenscheinlich nicht wahrnehm baren hauchdünnen staubähnlichen Materialpartikel überzogen werden. Durch die statische Aufladung dieses Materials, ist eine besondere sogenannte CORONA-Vor behandlung notwendig. Daß bei diesem Vorgang das Aus gangsmaterial von allen Partikeln befreit wird, ist nicht absolut sicher. Zu dem laden sich diese Platten bei der Weiterverarbeitung später wieder auf. Bei ge schäumten Formteilen z.B. aus EPS werden, um bei der Produktion höhere Taktzeiten zu erzielen, die Werkzeug formen oft mit Trennmittelspray vorbehandelt, damit die geschäumten Formteile besser aus den Formen ausgestos sen werden können. Diese material- und verarbeitungs spezifischen Besonderheiten sind ursächlich dafür, daß sich die Kunststoffkörper ob ausgestanzt aus Folien oder als Formteile geschäumt, die mittels Haftmasse an Reinigungsmittelkörper angebracht werden, sich später von diesen wieder ablösen können. Die Ablösung erfolgt dann regelmäßig zwischen dem Kunststoffkörper und der Haftmasse, die den Kunststoffkörper mit dem Reinigungs mittelkörper dauerhaft verbinden soll.The starting material from which the aforementioned Plastic bodies are made are commercially available thin extruded sheets in sheet form, usually 0.80 m × 1.20 m, which has been found to be static charge while apparently not noticing barely thin, dust-like material particles be covered. Due to the static charge this Materials, is a special so-called CORONA-Vor treatment necessary. That the end of this process gear material is freed of all particles not absolutely sure. This is what these records load into later on again during further processing. At ge foamed molded parts e.g. from EPS to be used at the Production to achieve higher cycle times, the tool molds often pretreated with release agent spray so that the foamed moldings better ejected from the molds can be sen. This material and processing specific peculiarities are the cause of the fact that the plastic body whether punched out of foils or foamed as molded parts, which by means of adhesive Detergent bodies are attached later can detach from these again. The replacement takes place then regularly between the plastic body and the Adhesive that cleans the plastic body with the should connect the middle body permanently.
Die Erfindung löst dieses Problem dahingehend, daß in die ausgestanzten Kunststoffkörper aus geschlossenpo rigem Kunststoff oder die geschäumten Kunststofform teile hinterschnittartige Vertiefungen, die das Material nicht durchstoßen, eingepresst werden. Die Haftmasse dringt in diese hinterschnittartigen Vertiefungen ein, härtet dort aus und ist somit mit dem Kunststoffkörper verankert. Dadurch wird das eventuelle spätere wieder Ablösen ausgeschlossen.The invention solves this problem in that in the punched plastic body from closed po plastic or the foamed plastic mold share undercut-like depressions that the material do not pierce, be pressed. The adhesive mass penetrates into these undercut-like depressions, hardens there and is thus with the plastic body anchored. This will make the eventual later again Peeling excluded.
Bei der Einbringung der hinterschnittartigen Vertiefung in die zur Verarbeitung gelangenden Kunststoffkörper bieten sich 2 Möglichkeiten an.When making the undercut-like recess into the plastic body for processing there are 2 options.
Werden die benötigten Kunststoffkörper aus extrudier ter Folie ausgestanzt, so werden innerhalb eines Band stahlschnittes entsprechend der Dicke des zu stanzen den Materials in beliebiger Verteilung vorzugsweise einige Millimeter vom inneren Rand des Bandstahlschnit tes entfernt abgestumpfte Metallstifte in das Träger holz des Bandstahlschnittes eingearbeitet. Die Länge dieser abgestumpften Metallstifte ist in der Regel einige Millimeter kürzer als die Schneidefläche des Bandstahlschnittes aus dem Trägerholz herausragt. Bei dem Stanzvorgang wird die zu stanzende Folie vom Band stahlschnitt durchtrennt. Gleichzeitig pressen sich die angebrachten Metallstifte in das gestanzte Material, durchstoßen die Oberfläche desselben und verursachen hier kleine Einstichlöcher.Extrude the required plastic body the foil are punched out, so within a band steel cut according to the thickness of the punch the material in any distribution preferred a few millimeters from the inner edge of the band steel cut tes removes blunt metal pins in the carrier wood of the band steel cut incorporated. The length This blunt metal pin is usually a few millimeters shorter than the cutting surface of the Strip steel cut protrudes from the carrier wood. At The punching process removes the film to be punched from the belt steel cut severed. At the same time they press attached metal pins into the stamped material, pierce the surface thereof and cause here small puncture holes.
Unmittelbar hinter der durchstoßenen Oberfläche drücken die abgeflachten Metallstifte beim weiteren Vordringen in das Material dieses zusammen und reißen kleine hin terschnittartige Vertiefungen in dasselbe, ohne das Material ganz zu durchstoßen.Press immediately behind the punctured surface the flattened metal pins as they advance into the material of this together and tear small ones down Section-like depressions in the same without the To pierce material completely.
Mit dem gleichen Verfahren können in geschäumte Form teile auch ohne Bandstahlschnitt, nur mit einem als Stempel mit diesen erwähnten Metallstiften ausgestalte ten Werkzeug hinterschnittartige Vertiefungen einge bracht werden. Unabhängig davon, ob die Formteile sta tisch aufgeladen, mit Partikel beschlagen sind, oder ob mit Trennmittel gearbeitet worden ist, dringt in diese hinterschnittartige Vertiefungen die Haftmasse ein und verankert sich somit mit dem Kunststoffkörper. Ein späteres Lösen von dem Reinigungskörper unter bleibt somit. Using the same procedure can be used in foamed form parts also without steel cutting, only with an as Design stamps with the metal pins mentioned undercut-like depressions be brought. Regardless of whether the molded parts are sta table loaded, fogged with particles, or whether release agents have been used penetrates these undercut-like depressions the adhesive and anchors itself to the plastic body. A later release from under the cleaning body therefore remains.
Die Erfindung wird nachfolgend an Ausführungsbeispielen näher erläutert, die in den Skizzen dargestellt sind. Sie zeigen:The invention is described below using exemplary embodiments explained in more detail, which are shown in the sketches. They show:
Fig. 1-2 einen Kunststoffkörper z.B. in ovaler Aus führung aus geschlossenporigem Kunststoff schaum mit umlaufend angedeutenden Ein stichlöchern, sowie einen Querschnitt die ses Kunststoffkörpers indem die hinter schnittartigen Vertiefungen angedeutet sind. Fig. 1-2 a plastic body, for example, in an oval shape made of closed-pore plastic foam with all-around indicated stitch holes, and a cross section of this plastic body by the cut-like depressions are indicated behind.
Fig. 3 ein kombiniertes Werkzeug mit abgestumpften Metallstiften versehen, welche angedeutet sind. Einen Kunststoffkörper 1 in Form eines ovalen Kunststoffplättchens aus ge schlossenporigem Kunststoffschaum mit um laufend angedeuteten Einstichlöchern 2 und einem Querschnitt in dem die Einstichlö cher 2 und die hinterschnittartigen Ver tiefungen 3 angedeutet sind. 4 die Holzauf nahmeplatte auf der ein Bandstahlschnitt 5 und die beschriebenen abgestumpften Metall stifte 6 angebracht sind. Fig. 3 provide a combined tool with blunted metal pins, which are indicated. A plastic body 1 in the form of an oval plastic plate made of closed-pore plastic foam with continuously indicated puncture holes 2 and a cross section in which the puncture holes 2 and the undercut-like recesses 3 are indicated. 4 the Holzauf recording plate on which a steel strip 5 and the truncated metal pins 6 described are attached.
Dieses Werkzeug entsprechend Fig. 3 kann auch ohne Bandstahlschnitt, nur mit einem als Stempel mit diesen erwähnten Metallstiften ausgestaltet werden.This tool according to Fig. 3 can also be without die-cutting, are configured only with a punch as mentioned with these metal pins.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19853523779 DE3523779A1 (en) | 1985-07-03 | 1985-07-03 | Plastics body made of closed-pored plastics foam, with recesses in the form of undercuts, and a mould with which these recesses can be pressed into the material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19853523779 DE3523779A1 (en) | 1985-07-03 | 1985-07-03 | Plastics body made of closed-pored plastics foam, with recesses in the form of undercuts, and a mould with which these recesses can be pressed into the material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE3523779A1 true DE3523779A1 (en) | 1987-01-22 |
Family
ID=6274853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19853523779 Withdrawn DE3523779A1 (en) | 1985-07-03 | 1985-07-03 | Plastics body made of closed-pored plastics foam, with recesses in the form of undercuts, and a mould with which these recesses can be pressed into the material |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE3523779A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999059793A1 (en) * | 1998-05-14 | 1999-11-25 | Bayer Aktiengesellschaft | Composite consisting of a coated polycarbonate and a polymer |
| WO2011037740A1 (en) * | 2009-09-25 | 2011-03-31 | Dow Global Technologies Llc | Perforated laminated polymeric foam articles |
-
1985
- 1985-07-03 DE DE19853523779 patent/DE3523779A1/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999059793A1 (en) * | 1998-05-14 | 1999-11-25 | Bayer Aktiengesellschaft | Composite consisting of a coated polycarbonate and a polymer |
| US6548146B1 (en) | 1998-05-14 | 2003-04-15 | Bayer Aktiengesellschaft | Composite consisting of a coated polycarbonate and a polymer |
| WO2011037740A1 (en) * | 2009-09-25 | 2011-03-31 | Dow Global Technologies Llc | Perforated laminated polymeric foam articles |
| US8075989B2 (en) | 2009-09-25 | 2011-12-13 | Dow Global Technologies Llc | Perforated laminated polymeric foam articles |
| RU2536145C2 (en) * | 2009-09-25 | 2014-12-20 | ДАУ ГЛОБАЛ ТЕКНОЛОДЖИЗ ЭлЭлСи | Articles made of perforated laminated polymer foam |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8133 | Disposal/non-payment of the application fee |