DE9115596U1 - Device for concealing, in particular, a pot or household sponge - Google Patents

Description

S 1159-22-ku 28.11.1991 -1-

Applicant: SITO metal and plastic processing, Leiblachstraße 2-8, 8996 Wigratzbad

Device for concealing, in particular, a pot or household sponge

The subject of the present innovation is a device for laminating, in particular, a pot or household sponge, wherein a harder partial element, such as a scouring fleece, a massage surface, a cleaning body or the like, is laminated onto the underside of a foam carrier material made of polyether, polyester or Pantex with a density of 50 to 80 kg per m ³ or of viscose sponge material made of blocked plastic fiber fleece or the like by means of hot-melt plastic powder.

The term "scouring pad" refers to a combination sponge body that consists of at least one foam carrier material, with a scouring fleece laminated to the underside.

The term "household sponge" refers to a sponge body, which preferably consists of a polyurethane or a polyether sponge material, with another body laminated to the underside. The other body, as a harder part, can be a massage surface, a fly sponge body with or without an abrasive, or a sponge body that is combined with a cleaning surface.

For all the above-mentioned sponges, it is essential that a cost-effective, simple - but still durable - connection between

-c-

the carrier material] - here the foam body - and the harder sub-element underneath, the plaster or cleaning body.

For the sake of simplicity, the following description only describes the connection of a foam carrier material with a harder sub-element consisting of a scouring fleece.

However, this should not be understood as limiting, since the scope of the present innovation includes all possible and known combinations between a foam carrier material and a harder sub-element to be attached to it via a laminated or adhesive connection, in particular a scouring, cleaning or massage fleece.

The scope of the present innovation also includes the replacement of the carrier material, consisting of a foam body, with another body, e.g. a viscose sponge, which is connected to a harder sub-element underneath, such as a scrubbing, cleaning or massage body, via the lamination described below.

A device for laminating of the type mentioned above is already known, whereby the hot-melt powder is applied directly to the carrier material and liquefied using infrared radiators. However, the loose sprinkling of the powder is relatively imprecise, so that unevenness could form when laminating the harder part of the element.

It is also known to flame the foam carrier material, whereby the harder part is then laminated onto the liquefied surface layer. However, this results in an environmental impact when the foam carrier material is flamed and, furthermore, only very specific carrier materials that are susceptible to liquefaction can be used.

It is also known to combine the harder part with a

Two-component PU adhesives are used to bond them to the foam carrier material. However, this has the disadvantage that there is a risk of health hazards when the adhesive is applied and when it hardens.

It is also known to use a hot-melt film for lamination in order to achieve an adhesive bond between the carrier material and the harder component. However, the disadvantage here is that the hot-melt film is relatively expensive and there is also the need to adjust the size of the hot-melt film precisely to the web material to be bonded.

The present innovation is therefore based on the task of developing a device for laminating, in particular a pot or household sponge, in such a way that webs or sheets of any width can be joined together in a reliable and cost-effective manner.

To solve the problem posed, the innovation provides the features of the characterising part of claim 1.

The essence of the innovation lies in the fact that firstly, starting from a heated roller, a liquefied plastic film is laminated onto the foam carrier material and then, in a subsequent laminating process, the harder partial element, in particular a scouring fleece or the like, is laminated onto the carrier material, which is then provided with the liquid adhesive layer.

The technical teaching provided provides the significant advantage that a thin, liquefied plastic film is applied to the foam carrier material in very precise amounts using the heated roller, with the thickness of the plastic film or adhesive layer being precisely adapted to the requirements. In this way

An adhesive layer of defined thickness is applied in a thin layer to the foam carrier material so that no hardening or unevenness or similar inaccurate bonding can occur during the subsequent laminating process with the harder part element.

The hot melt powder is preferably a powder made of polyester, polyamide, polyethylene or EVA plastic.

In a preferred embodiment, the rubble hopper has a forced distribution for the plastic powder.

In connection with the forced distribution, the debris hopper is advantageously designed as a vibrating hopper or the debris hopper has conveyor screws or a rotating roller with circular grooves is arranged at the outlet end of the debris hopper, with a scraper lip and a bristle roller being provided opposite.

By using the rubble hopper with a forced distribution, a very precise dosage and fine distribution of the bulk material or the plastic powder on the heated roller is achieved, so that a liquefied plastic film of a defined size can be applied to the carrier material with always repeatable application.

In a further embodiment, it is advantageous that the heated roller is followed by an infrared radiator, which is arranged in front of the laminating gap.

The arrangement of an additional infrared radiator is selected as required, whereby a further liquefaction of the plastic film on the carrier material is achieved before this material is introduced into the laminating roller gap.

The subject matter of the present innovation arises not only from the subject matter of the individual protection claims, but also from the combination of the individual protection claims with one another.

All information and features disclosed in the documents - including the summary, in particular the spatial configuration shown in the drawings, are claimed as essential to the invention, insofar as they are new compared to the prior art, individually or in combination.

The invention is explained in more detail below using a drawing that merely shows one embodiment. Further essential features and advantages of the invention can be seen from the drawing and its description.

The drawing shows the heated roller 2 on the device, on which the bulk material - here hot-melt powder - is scattered out of a rubble hopper 1.

The heated roller 2 is PTFE-coated and filled with heat transfer fluid.

In one embodiment, it is possible for the rubble hopper 1 to be designed accordingly in order to achieve a fine distribution of the plastic powder 6 on the roller 2. For this purpose, conveyor screws can be provided or the rubble hopper 1 is designed as a vibrating hopper or a rotating roller is provided at the outlet end of the rubble hopper 1, with circular grooves being present in the roller which are spaced apart from one another and the roller is also driven to rotate.

Through this rotary drive of the roller, the plastic powder 6 is partially collected in grooves and conveyed downwards out of the rubble hopper 1, whereby a scraper lip is present which only lets out the part of the powder that has accumulated in the grooves. On the opposite side of the discharge area of the rubble hopper

1 is then arranged a bristle roller, which then strips and cleans out the grooves, which may still be partially filled, so that the grooves are emptied and turned back into the rubble hopper 1 and are free to receive new powder 6.

The heated roller 2 is heated with a heat transfer fluid, e.g. with silicone oil, water or the like.

It is also possible to heat the roller 2 in another way, e.g. with an internally installed radiator heater or the like.

The heat-meltable powder 6 is sprinkled as bulk material onto the heated roller 2 via the rubble hopper 1, and a liquefied plastic film 7 then forms on the roller 2, which is applied to the carrier material 8, here a sponge material, when the roller 2 rotates anti-clockwise.

The rotational speed of the roller 2 is selected so that it is ensured that a liquefied plastic film 7 forms on the area of the roller 2 and that no loose powder 6 falls onto the underlying carrier material 8.

Furthermore, the rotation speed is selected such that a plastic film 7 of a certain defined thickness is formed, whereby this plastic film 7 is not formed too thin.

In the illustration shown, the sponge or carrier material 8 lies on a conveyor belt 4 and is transported in the direction of the arrow.

After rolling the plastic film 7 onto the carrier material 8, an infrared radiator 5 can be provided, which achieves further liquefaction of the plastic film on the carrier material 8, before this material is introduced into the laminating roller gap.

In the embodiment, the laminating roller gap is formed by a deflection roller 3, whereby the harder sub-element 9, here a scouring fleece, is fed via the deflection roller 3 and is then laminated onto the carrier material 8 provided with the liquefied plastic film 7.

The finished lamination 10 is then formed at the outlet of the device, which is then cut into blocks or manageable pieces.

drawing legend

1 rubble hopper with forced distribution

2 Heated roller. PTFE-coated, filled with heat transfer fluid

3 Deflection roller for fleece

4 Conveyor belt

5 infrared heaters

6 Bulk plastic powder

7 liquefied plastic film

8 Sponge (supporting material)

9 Scouring fleece (harder part)

10 finished lamination

Claims (4)

Your message from Your letter of Subject: Re Applicant: Company SITO Metall- und Kunststoffverarbeitung Leiblachstraße 2-8, 8996 Wigratzbad Protection claims 1. Device for laminating, in particular a pot or household sponge, whereby a harder part element, such as a scouring fleece, a massage surface, a cleaning body or the like, is laminated onto the underside of a foam carrier material made of polyether, polyester or Pantex with a density of 5 to 80 kg per m ³ or of viscose sponge material made of blocked plastic fiber fleece or the like by means of hot-melt plastic powder, characterized in that hot-melt plastic powder (6) is fed via a rubble hopper (1) to a heated, rotating roller (2) and that the carrier material (8) is fed via a conveyor belt (4) to the roller (2), whereby a liquefied plastic film (7) is rolled onto the carrier material (8) and that the roller (2) is followed by a deflection roller (3), where the harder part element (9) is laminated onto the carrier material in a laminating gap. is laminated on. Telephone: Telex: Facsimile/Fax: Lindau (0 83 82) 5 43 74 (patent-d) +49-8382 - 7 80 27 7 80 25 Telegram address: patri-lindau Bank accounts: Postal checking account Bayer. Vereinsbank Lindau (B) No. 1257 110 (bank code 735 200 74) Munich 414 848-808 Hypo-Bank Lindau (B) No. 66 70-326 843 (bank code 733 204 42) (bank code 70010080) nU ündaj (B) No. 51 222 000 (bank code 735 901 20) -7 - 2. Device according to claim 1, characterized in that the rubble hopper (1) has a forced distribution for the plastic powder (6). 3. Device according to claims 1 and 2, characterized in that the rubble hopper (1) is designed as a vibrating hopper or has conveyor screws or a rotating roller with circular grooves is arranged at the outlet end of the rubble hopper (1), with a scraper lip and a bristle roller being provided opposite. 4. Device according to claim 1, characterized in that the heated roller (2) is followed by an infrared radiator (5) which is arranged in front of the laminating gap.