Title of Invention	MULTIPURPOSE GROUNDSHEET PP/TPO COMPOSITE LAMINATE
Abstract	CLAIM: 1.A "Multipurpose ground sheet PP/TPO Composite Laminate" comprising of polypropylene (PP) fabric adhered using a thermoplastic olefin TPO polymer based compound, in the said composite the PP fabrics form outer sides of the lamina, the middle layer consists of TPO acting as an adhesive layer for fabrics on both the sides, the panels of composite is used for making a sheet of desired size.

Full Text

FORM - 2 The Patent Act, 1970 (39 of 1970) COMPLETE SPECIFICATION. (Section 10; Rule 13) "MULTIPURPOSE GROUNDSHEET PP/TPO COMPOSITE LAMINATE". M/S. ENTREMONDE POLYECOATERS LTD. (A JOINT STOCK COMPANY REGISTERED UNDER INDIAN COMPANIES ACT 1956) having address at KILFIRE HOUSE, C-17, DALIA INDUSTRIAL AREA, OFF LINK ROAD, ANDHERI (WEST), MUMBAI - 400 053 The following specification particularly describes the nature of this invention & the manner in which it is performed: DE 2850102 US 6864194 US 5891541 US 4589804 GRANTED ORIGINAL 342/MUM/2005 20-11-2006 The present invention relates to Multipurpose Groundsheet more particularly relates to the multipurpose lightweight ground sheet for soliders and other civil applications, The ground sheet used by soldiers is a must and daily use necessity. The preferred dimension of about lm X 2 m is used. The ground sheet is used for many applications to name a few are as a sleeping mat, as a temporary shelter by joining two or more ground sheets to collect water from streams when in remote area, as a stretcher hammock etc. The dimension is appropriate according to ease of application however it can be altered as per the requirement and end use application. DESCRIPTION OF EXISTING PRODUCT/PROCESS The conventional ground sheet used is made out of rubber proofed cotton fabric. The process of manufacture is first to rubber proof a single layer of cotton fabric by spreading rubber solution by a standard coating method. The rubber solution may consist of fillers and additives to obtain a waterproofing layer on the fabric. The proofed fabric thus formed is subjected to lamination process where the rubber compound acts as an adhesive to bond two layers of cotton fabric. Cotton being a natural fiber, has many disadvantages like it looses mechanical properties due to exposure to external environment. It can be affected easily with the microorganisms and the uses condition makes it more vulnerable to such attacks. Natural rubber compound used also degrade because of unsaturated sites available, the additive causes odour hence it is not a comfortable option as ground sheet. JP Patent 2004211475 discloses a process for soft ground biodegration fiber sheet capable of ensuring traffic ability in a soft ground which comprises of fiber sheet parallel arranges a plurality of warp threads alignment within a wrap, thread arrangement plane. But these sheets are not resistive to weathering elements like moisture UV and chemical reaction. JP Patent 8072500 discloses a method for making sheet with coloured figures made of Japanese Paper fitted with ground sheet. But these sheets does not have sufficient strength & durability for preventing deteterioration due to solar radiation. Patent W002095169 discloses a method for making a modular shelter comprising a rigid structure formed with mutually linked and articulated frames. However, the conventional methods have many disadvantages than the present invention some of which are mentioned below : The conventional methods can be affected easily with the microorganism The conventional methods causes odour such as toxic sulphur compounds used for vulcanization hence it is not comfortable. The conventional products gets harden on storage of the composite. The Conventional products does not have resistive strength against weathering elements like moisture oxygen, UV and chemical reaction. The cotton fabric does not dry up quicker. OBJECTIVES OF PRESENT INVENTION The present Invention "Multipurpose Ground Sheet PP/TPO composite Laminate" has been developed to overcome the disadvantages of the conventional methods / products. The first objective of the present invention is that it should not susceptible to microbiological attack. The other objective is that it should not causes odour problem such as toxic sulphur compound causes bad odour used for vulcanization in Rubber sheets. The present product described under invention should not harden on storage of the composite. The present invention should be resistive to weathering element like moisture, oxygen & UV & chemical reaction. The present invention should have excellent low temperature flexibility. The present invention should have excellent UV and thermal ageing properties. On wetting the present fabric should dry up quicker. COMPLETE TECHNICAL DETAILS The present invention "Multipurpose Ground Sheet PP/TPO composite Laminate" will now be explained in detail with the help of figure 1 and figure 2 of accompanying drawings. Figure 1 shows cross section diagram of ground sheet PP/TPO. Figure 2 shows dimentional illustration of Ground Sheet PP/TPO. Figure 1 illustrates Polypropylene (PP) fabric (1) Thermoplastic alefin (TPO) layer (2), Adhesive layer (3). Figure 2 illustrates Wi-Width total 105 ± 15mm (4), W2 - Thermo sealed Hem 40± 3mm (5), L-Length total 190± 15mm (6), E-Eyeles - passivaled Aluminium (7), The fabric used for coating is Poly Propylene (PP) based, made out of dope dyed texturized PP yam. However, all the types of yams can be used for fabric manufacturing. The weight of fabric was ranging from 30-400 gsm (gram per square meter). The fabric is coated on one side with TPO (Thermoplastic olefin) compound. The compounds consist of number of polymers viz. pp, homo and copolymers manufactured using various types of catalysts based processes, Engage Chemigum. One of the formulations is tabulated and discussed below as an example. The filler and other additives are mixed as per the product requirement. In the TPO compound formulations, for 100 parts of PP homopolymer or co-polymer, Engage 10-300 parts by weight, Chemigum P 81, 0-500 parts by weight, precipitated CaC03 0-100 parts by weight, Carbon black/ Ti02 or colorant 0-30 parts by weight, UV -stabilizer 0-10 parts by weight, wax based lubricant 0-20 parts by weight are added first in a twin screw extruder. The processing temperature of the zones and die head was ranging from 130-220° C, suitable mesh filters were used. A typical formulation and General Properties of TPO Compound are listed in tables No. I and II. Table I TPO compound formulation: Ingredient Parts PP Copolymer 100.00 Engage 8401 70.00 Chemigum P-83 10.00 PPfCaC03 15.00 Carbon Black 5.00 Tinuvin 783 00.30 Table II General property range of TPO compound : Property Unit Specification Shore A hardness 15 Sec 35-95 100% Modulus MPa 2.15-7.5 Tensile Strength at Break MPa 5-19.5 Ultimate elongation (%) 300-950 Flexural Modulus MPa 4.5-54 Compression set 24 hrs @ 23 C(%) 22-55 Compression set 24 hrs @ 70 C(%) 49-100 Tension set @ 100% Elongation % 12-35 The weight of coated fabric was between 90-400 gsm. The TPO coated sides were faced to each other and pressed at 5 - 15 N/ cm at temperature of 100-130 ° C at a speed of 6-15 meter per minutes rel Drawing fig. 1. The laminate thus formed was fabricated as per drawing Fig. 2. The general properties of ground sheet fabric laminate is described in table III. Table III Property Unit Specification Breaking strength in N (5X20)cm Warp Weft Newton 800min. 500min. Water proofness (Low pressure method) 90cm/30min No leakage Adhesive strength of fabric to TPO in N / 5 cm Newton 60min. Cohesive strength between two layers in N/5 cm Newton 20min. Flexing 75000 cycles Should not crack Should not delaminate Cold cracking (-50° C) Should not crack ADVANTAGES OF INVENTION: The present invention "Multipurpose Ground Sheet PP/TPO Composite Laminates" have many advantage as compared to the conventional. Some of them are mentioned below. The present invention are not susceptible to microbiological attack. In present invention, there is no hardening on storage of the composite. The present invention does not causes odour problem. It has excellent resistance to weathering element like moisture, UV and chemical resistance. It has excellent resistance to oxygen ad ozone attack. The composite has excellent UV and thermal ageing properties. It has excellent low temperatures flexibility. On wetting the PP fabric will dry up much quicker than the cotton fabric. It has excellent hydrostatic puncture resistance. Light weightness due to low specific gravity. It has outstanding resistance to multi-axial strain. CLAIM : 1.A "Multipurpose ground sheet PP/TPO Composite Laminate" comprising of polypropylene (PP) fabric adhered using a thermoplastic olefin TPO polymer based compound, in the said composite the PP fabrics form outer sides of the lamina, the middle layer consists of TPO acting as an adhesive layer for fabrics on both the sides, the panels of composite is used for making a sheet of desired size. 2. The ground sheet as claimed in claim 1, wherein the PP fabric made out of texturized, micro, nano, multifilament or monofilament yarn, solution or dope dyed or undyed natural white; 3. The ground sheet as claimed in claim 1, wherein the TPO layer consisting of virgin TPO and blend of virgin TPO with additives and other olefin polymers or copolymers. 4. The ground sheet as claimed in claim 1, wherein the TPO layer made out of multilayers of compound of virgin TPO and blend of virgin TPO using additives and olefins. 5. The ground sheet as claimed in claim 3 & 4, wherein adhesive is used for adhesion of multilayers. 6. The ground sheet as claimed in claim 1, wherein the panels of said composite are stitched / welded to each other or to other material to form a sheet of desired size and shape 7. The "Multipurpose ground sheet PP / TPO composite Laminate" such as herein described with references an accompanying drawing. Dated 23rd Day of March, 2005, Signature JOSEPH VARIKASERY OF VARIKASERY & VARIKASERY Agent for the applicant 2 0 NOV 2006

Documents:

319-mum-2005-claim(granted)-(20-11-2006).doc

319-mum-2005-form 2(granted)-(20-11-2006).doc

342-mum-2005-cancelled pages(20-11-2006).pdf

342-mum-2005-claims(granted)-(20-11-2006).pdf

342-mum-2005-correspondence(06-06-2007).pdf

342-mum-2005-correspondence(ipo)-(19-10-2007).pdf

342-mum-2005-drawing(20-11-2006).pdf

342-mum-2005-form 1(24-03-2005).pdf

342-mum-2005-form 18(04-01-2006).pdf

342-mum-2005-form 2(granted)-(20-11-2006).pdf

342-mum-2005-form 3(24-03-2005).pdf

342-mum-2005-form 9(01-04-2005).pdf

342-mum-2005-power of attorney(24-03-2005).pdf