Stock material or miscellaneous articles – Pile or nap type surface or component – Edge feature or configured or discontinuous surface
Patent
1987-12-03
1989-07-18
McCamish, Marion C.
Stock material or miscellaneous articles
Pile or nap type surface or component
Edge feature or configured or discontinuous surface
15215, 15216, 15217, 156 72, 428 89, 428 95, B32B 302
Patent
active
048492710
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention relates to a mat and a process for producing mats for covering surfaces or for cleaning purposes, particularly door mats, which are made from a basic material mainly constituted by plastic with a fibrous layer and a support layer fixing the latter and fibres applied to the basic material with a bristle-like structure.
Within the sense of the invention, the term mat is understood to mean any flat material in web form or in the form of blanks having a random size. From the use standpoint, this is understood to mean foot scrapers, door mats, rugs, soft mats or webs, belt brushes or other smaller blanks in the form of pads or the like. Mat material of this type is generally used for cleaning purposes, e.g. in the form of a doormat, foot scraper or rug for cleaning the shoes before entering rooms, or in the form of wall-to-wall carpeting for covering foyers, entrance halls and the like and in the form of belts, pads or the like for the mechanical or manual cleaning of surfaces, etc.
To the extent that the mats are used as doormats, rugs, etc., they used to be made from natural fibres, such as coir and sisal fibres and the like, while of late they have been produced from synthetic fibres, e.g. as needled felt. Such fibrous mats are intended to strip dirt from shoes and to retain the stripped off dirt within the fibrous structure. The tendency is towards artificial fibres, because they rot less rapidly, are more hygienic and dry faster in the case of the access of moisture. It has also been recognised that the cleaning action can be improved by replacing the fibrous material by bristles, which are upright and in parallel to one another. However, a disadvantage thereof is the inadequate retention of dirt, because the stripped off dirt particles spatter.
As has already been stated, the first-mentioned fibrous mats include simple needled felt mats, in which the needled or sewn tangled fibres are held on the back by compression, spraying or the application of a binder, accompanied by the formation of a support layer. This category also includes mats formed from pile fabric, e.g. of polypropylene, in which the pile weft or warp is cut up to form bristle-like fibres (German utility model 7 738 685).
A number of different constructions of mats with a bristle structure are also known. The bristles in the form of bristle strips are fixed mechanically either in ledge or box-like holders (DE-OS 2 347 790, German patent 2 530 974, DE-OS 2 555 125 and U.S. Pat. No. 2,805,437) or are fixed in support grids (DE-AS 1 003 930). The dropping of the stripped off dirt onto the floor is either accepted, or between individual bristle strips are provided adequately large chambers for trapping the dirt. It is also known to provide roller-like brushes in directly juxtaposed manner with interengaging bristles (DE-AS 1 931 548 and DE-AS 1 654 104). Such bristle mats ensure a relatively good dirt retention. However, all the aforementioned embodiments are technically complicated to manufacture and are therefore expensive.
In another group with a similar structure (German utility models 7 520 299 and 7 443 282), the support layer is formed by large-area plastic injectioin moulded parts with chamber-like depressions, bristles being engaged on the upper edge of the chambers bounding the webs. These constructions aim at ensuring that the dirt stripped off from the bristles is collected in the chamber. However, such doormats only function correctly if they are provided with a full-area, dense covering of bristles. From the manufacturing standpoint it is difficult, if not impossible, to apply the large number of bristles to the relatively small faces of the webs of the support material.
Knowing this, it has also been proposed (U.S. Pat. No. 3,886,620 and German utility model 6 909 246), to injection mould be entire doormat in one piece from plastic, so that the bristles are made from the same material as the support structure. Here again retention chambers for the dirt are provided. However, as is known,
REFERENCES:
patent: 4353944 (1982-10-01), Tarui
Coronet-Werke Heinrich Schlerf GmbH
McCamish Marion C.
LandOfFree
Process for producing mats for cleaning purposes and mat for cle does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for producing mats for cleaning purposes and mat for cle, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for producing mats for cleaning purposes and mat for cle will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-171122