DE6930686U - REUSABLE MOLDED PART LIKE A PLATE OR BLOCK MADE OF HARD FOAM PLASTIC FOR CREATING FORMWORK - Google Patents

Description

Patent engineer

e'br-o, Moltkestr. T7 28.7

Phone 42192 ''

1570

Isopor Kunststoff GmTaH, 6908 Wiesloch / Baden am Staatsbahnhof

Reusable molded part such as a plate or block made of rigid foam plastic for creating formwork

For the establishment of coffered ceilings or the like. become multiple block-shaped molded parts made of rigid foam plastic used, f which also have a slightly trapezoidal cross-section "for the purpose of easier removal after completion of the ceiling. In order to facilitate the demolding even further, it has already been proposed to insert a on the top of the block üToer a line from the underside of the! molded part inflatable Cushions or the like »to be arranged. Made from rigid foam plastic, in particular made from rigid foam polystyrene Molded parts were wrapped in a plastic film together with the cushion arranged on the top, the opposite forms a separating layer of the concrete mass, facilitates demolding and, above all, unintentional binding of the cushion to be inflated into the concrete mass. Regardless of the expediency of such a structure of an I.

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for the creation of formwork "requires the arrangement of the inflatable cushion on the top and its casing or wrapping with a plastic film the production of the standard part from rigid foam plastic

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itself one or more additional operations and required * also an attachment of the film to the molded part by clips or the like. These circumstances worked both in an increase in the cost of production and in

a certain difficulty in handling the molded parts |

In the molded part according to the innovation, the difficulties mentioned are avoided in that it is in its entirety or partly from foamed by a blowing agent Rigid foam plastic such as polyurethane or the like. consists and together with the pillow at least on its top and on its side surfaces are covered with a plastic film, which are firmly connected to it by the rigid polyurethane foam is. A film made of plastic material can also advantageously be provided between the cushion and the upper side of the molded part be that it prevents the cushion with the polyurethane foam o.dglo existing parts of the molded part a connection is established. It is particularly useful if the molded part is made up of foamed sections of any desired size The shape is made of rigid foam polystyrene that passes through

Rigid foam polyurethane or the like. are mutually related. In order to prevent the line led from the cushion to the underside of the molded part from having an adhesive connection the parts of the standard part made of rigid foam polyurethane received, the line can or the like at a certain distance with a pipe. be encased in plastic.

In the drawing, the subject of the innovation is shown in a schematic using the example of a block-shaped standard part vertical section illustrated.

The block-like standard part 1 has a known manner with regard to its later demoldability slightly trapezoidal cross-section. At its top is an inflatable pillow 2 or the like. arranged which are made of rubberized fabric. and from which a hose-shaped line 3 passes through the standard part 1 is guided to the bottom. The standard part can, as illustrated in the schematic representation, for Part made of foamed-in parts 4 made of rigid foam polystyrene and partly from a self-foaming one, i.e. foamed by a blowing agent without external heat input Rigid foam plastic 5, such as polyurethane or the like. be made. Br could, however, also consist exclusively of such a self-foaming agent in its entirety

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Rigid foam plastic are made. The entire molding 1 is including, the arranged on its upper side cushion 2 covered with a plastic film 6, at least on its top and on the side surfaces. The plastic film 6 bonds firmly to the self-foaming one Rigid foam plastic 5> so that they hold the cushion 2 while the molded part is being handled at the construction site connects with it and at the same time a separating layer on the top of the molded part and on its side surfaces compared to the concrete mass to be introduced after the construction of the formwork. This also works with pillow 2 self-foaming rigid foam plastic compound 5 an adhesive compound. If this is undesirable, so is A further plastic film 7 is arranged between the top of the molded part 1 and the cushion 2. Line 3 of the Cushion 2 could also be at a certain short distance with a tube 8 made of plastic or the like. be encased. These Execution in connection with the arrangement of the second film 7 then allows after the demolding of the molded part 1 to easily separate the pillow 2 from the part 1 from a finished blanket, so that this may be as lost shell body can be used again without further ado.

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The production of the molded part 1 including its cladding by d'.e plastic film 6 can due to the use of a self-foaming rigid foam plastic such as polyurethane or the like. extremely easy to do. In any shape made of wood or the like. the plastic film 6 is inserted first, then the cushion 2 and, if necessary, the second film 7. Furthermore, if the aim is to make it easier to separate the cushion 2 from the molded part 1, a tube 8 made of plastic can be pushed over the line 3 of this cushion will. It is then either exclusively a self-foaming rigid foam plastic such as polyurethane or the like in the form lined with the plastic film 6. injected, or the parts 4 made of rigid foam polystyrene are filled into the mold in the same operation and the self-foaming rigid foamed plastic is injected. The self- foaming rigid \ foam plastic 5 here connects the rigid foam I

ι polystyrene sections firmly together; equal- \.

the self-foaming rigid foam plastic 5? So for example polyurethane, a firm connection with the molded part 1 and the film 6, so that without one additional work step, coming out of the mold, a firmly connected to its inflatable cushion 2 and

tfj ψ formwork body provided with a separating layer compared to the concrete mass. But the advantage is not alone !?

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in this union of manufacture, but also in the fact that the molded part 1 as a part firmly connected in one piece with the cushion 2 and the film 6 "during storage
and transport and, above all, "during further processing on the construction site, a very considerably simplified handling is allowed.

Claims (4)

ie * o Walter Kohlhagen Patent engineer
Ntidclberg, Moltkeslv. 17 July 28, 1969 1570 gm Protection claims 1 ·.) Reversible molded part, such as a plate or block, in particular of trapezoidal cross sections made of rigid foam plastic with a line from the underside of the standard part arranged on the top from inflatable pillow or the like. to create Formwork, characterized in that it is made up in its entirety or in part by a propellant foamed hard foam plastic (5), such as polyurethane or the like., and together with the pillow (2) is covered at least on its top and on its side surfaces with a plastic film (6), which firmly connected to it by the rigid foam polyurethane (5) "· is. 2.) Molding according to claim 1, characterized by a, between the cushion (2) and the top of the standard part (1) arranged film (7) made of plastic material. 3.) molded part according to claims 1 and 2, characterized in that ·· · αο · »» t a »β • · · urn »aa a Il * ff 6 f 9 Ή * «>» «β net that he consists of foamed sections (4) of consists of "any shape made of rigid foam polystyrene", by rigid foam polyurethane (5) or the like »each other are connected. 4.) Molding according to claims 1 "to 3, characterized in that that the line (3) of the cushion (2) at a certain distance with a tube (8) or the like. encased in plastic is the one with the rigid foam polyurethane 's existing parts (5) of the molded part is connected.