Title of Invention

A PROCESS OF MAKING RUBBERISED WATER ABSORBENT POLYPROPYLINE MATS

Abstract

A process of making rubber backed, design embossed water absorbent mats from plain / ribbed / looped polypropylene carpets by vulcanizing Compounded rubber sheets fixed in the back side with the help of a pre designed hot mould, placed in a hot hydraulic / mechanical/screw press by applying a working pressure ranging from 200PSI to 1000PSI at a temperature ranging from 75'C to 140'C within the curing time of 2 minutes to 5 minutes. And a rubber backed, design embossed, water absorbent mat, when produced by a method according to the above said process. Dated this the 5th dav of May 2000.

Full Text

PROCESS OF MAKING RUBBERISED WATER ABSORBANT POLYPROPOLINE MATS THE FIELD OF INVENTION The field of this invention relates to a method of making rubber backed water absorbent mats for the use as floor mats for domestic/ commercial purposes, bath mats car mats living room carpets etc. PURPOSE AND BACKGROUND OF INVENTION 1 Presently available conventional coir floor mats with or with out brushes are good to brushing purpose. But it is slippery in nature and allows accumulation of dirt/dust and water under the mats. And does not have water absorbent quality to use as bath mats and in car mats. 2.Improvements made to the coir mats by rubber backing provide a non-slippery nature to the mats. But does not improve the water absorption quality. 3. The non-woven floor mats made of rubber is non-slippery in nature, but it does not have the property to absorb water. 4.Woven cotton floor mats and non-woven polypropylene mats are highly water absorbent mats, but it does not have non-slippery in nature. INVENTION The invention is a process of making rubber backed or rubber edged and backed water absorbent mats which is enough to overcome the deficiencies stated above. The rubber backed water absorbent mats are non slippery in nature and has capacity to absorb water. More over the designs embossed at the top of the mat secures it elegance and attractive appearance. Polypropylene carpets, either plain, ribbed or looped, with or without primary backing and compounded rubber sheet are taken as the main raw materials for making the mat. The compounded rubber sheets are made by mixing natural rubber and or synthetic rubber with rubber chemicals such as accelerators, plasticisers, boosters anti oxidants, fillers, processing oils, sulphur and other rubber compounding components in a rubber mixing mill or in a kneader machine. The process of mixing is necessary to set the natural rubber to undergo the process of vulcanization effectively and swiftly. The resultant product of the mixing process is compounded rubber. The compounded rubber thus obtained is sheeted out from the mixing mill or with the help of a calendaring machine, to the required thickness and cut to the required size. The process : The polypropylene carpet is cut to the required size and then fed to the pre designed hot mould facing the designed side of the mould. The compounded rubber sheets cut to the required size are then placed over the polypropylene carpet. The compounded rubber sheet which are cut to the required border size are placed at the four borders, in case of rubber backed and edged mat. This is not necessary while producing rubber backed mat. Then the top plate is placed over it.. Then the assembly of sized polypropylene carpets, sized compounded rubber sheets and the top and bottom pieces moulds together are placed to the hot hydraulic press/ mechanical press/screw press for vulcanization 75'C to 140'C for 2 minutes to 5 minutes at 200 PSI to 1000 PSI working pressure. The compound which oozes out during vulcanization is cut and removed carefully to have attractive finishing to the mat. The process of 'vulcanization is the cross linking of rubber molecules in heat and pressure with sulphur and other chemicals, through which the rubber is strengthened and made rigid. The product thus obtained is non slippery water absorbent mats with embossed attractive designs. 1 claim :- 1. A process of making rubber backed and design embossed water absorbent mats by providing compounded rubber sheets on the backside of the sized polypropylene carpets which placed over a pre designed hot mould with the help of a hot Hydraulic / mechanical press. 2. The process as claimed in Claim 1 above wherein the compounded rubber is vulcanized at a temperature of 75 C to 140 C and compressed in a hydraulic press at a pressure ranging from 200 PSI to 1000 PSI for 2 to 5 minutes 3. The process as claimed in Claim no.l and 2 above and the simultaneous embossing of design on the polypropylene carpet placed at the top of the mat. 4. The rubber backed or rubber backed and edged, and design embossed water absorbent mat made from plain, ribbed and looped polypropylene when produced by a method of process according to any one of the above said claims.

Documents:

347-MAS-2000 CORRESPONDENCE OTHERS 20-07-2011.pdf

347-MAS-2000 CORRESPONDENCE OTHERS 24-01-2011.pdf

347-MAS-2000 CORRESPONDENCE OTHERS 20-03-2012.pdf

347-mas-2000-abstract.pdf

347-mas-2000-claims filed.pdf

347-mas-2000-claims original.pdf

347-mas-2000-correspondance others.pdf

347-mas-2000-correspondance po.pdf

347-mas-2000-description complete filed.pdf

347-mas-2000-description complete original.pdf

347-mas-2000-form 1.pdf

347-mas-2000-form 19.pdf

347-mas-2000-form 26.pdf