GB2299939A

GB2299939A - Fungistatic and bacteriostatic mesh pad

Info

Publication number: GB2299939A
Application number: GB9507802A
Authority: GB
Inventors: Yung Li Hsu
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-04-18
Filing date: 1995-04-18
Publication date: 1996-10-23
Also published as: GB9507802D0; DE19517274A1

Description

-1.

COMPLETE SPECIFICATION is 2299939 METHOD FOR MANUFACTURING A FUNGISTATIC AND BACTERIOSTATIC MESH PAD The present invention relates to a methqd for manufacturing a fungistatic and bacteriostatic mesh pad which, after being dipped in a special paste, is provided with the function of a bacteriostat for a long period, effect of the reagent lasts long, and can be extensively used with great contribution.

Conventional pads made of chemical substance such as rubber, plastic etc. can make sticky and wet feeling of a person when is used in the normal life, and after long term usage, or if it is used in a sealed space having inferior ventilation condition, fungi can breed, bad order can be generated, and this is extremely not sanitary. Although dry powders or reagents have been applied on the surfaces of such mesh pads for improvement, just because they have been applied on the surfaces, they get the disadvantage of quick volatilizing and short effective time, yet they can lose their effect once they are washed with water, this is surely inconvenient.

The present invention has been studied and improved against the process of manufacture and disadvantage in use of the conventional mesh pads, it is a novel method of manufacture for such mesh pads, and can improve qua- is lity of human life thanks to the advantage of the long term fungistatic and bacteriostatic character thereof.

The primary object of the present invention is to render a mesh pad to be fungistatic and bacteriostatic by dipping the mesh into a paste of special formula, by virtue of the compatibility among various chemical substances in the paste, the mesh after dipping can render the bacteriostatic reagent therein to volatilize in sli -ght amount for a long period.

The secondary object of the present invention is to prolong the effective time or life of use of the bacteriostatic reagent blended in the paste of special formula by the compositions of the paste, whereof, the effect of the reagent will not lose even when it is washed with water.

The present invention will be apparent in its method of maufacture, composition of material, and characteristics and functions after reading the detailed description of the preferred embodiment thereof in reference to the accompanying drawings.

In the drawings:

Fig. 1 is a flow chart of the present invention; Fig. 2 shows the shape of a mesh pad of the present invention; Fig. 3 shows the shape of a shoe pad of the present invention.

is Manufacturing of the mesh pad is completed by dipping a conventional mesh into a paste of special formula,, material for the mesh can be chosen e.g. from PE, PP, NYLON etc. depending on usage and requirement there -of, this is not the point of the present invention and will not be narrated further herein.

Formula for composing the paste includes: a p.v.c. paste resin, a sec plasticizer, a stabilizer, a bacteriostat,, a filler and a blowing agent etc., a preferred embodiment of practising manufacturing of the paste of the present invention is now referred as follows:

Referring to Fig. 1 which is a flow chart of the present invention, sec plasticizers 11 (DHP 40 PHR, DOA 40 PHR) and a bacteriostat 12 (8 PHR) are sufficiently mixed at the room temperature, and a stabilizer 14 (KBa- Zn, 3.5 PHR in liquid state) then is added therein, after uniform mixing 13 of them, a p.v.c. paste resin 16 (100 PHR), a blowing agent 17 (4 PHR) and a filler 18 (CaCos, 50 PHR) are finally added, the mixed material is stirred continuously for about 40 - 60 min. till a paste 2 of about 3,500 - 4,000 c.p.s. viscosity is obtained, and thereafter, a mesh 3 is dipped into the paste 2 and is heated for curing at about 150 - 180 % and is taken out after 2 - 3 min., thereby the sur -faces of the mesh 3 are all adhered with the paste 2, then a mesh pad 4 is formed through drying and blowing.

In the formed mesh pad 4, the sec plasticizer 11 and the p.v.c. paste resin 16 are chemically bad in compatibility. therefore, when the temperature outside, goes higher. the sec plasticizer 11 will be rejected by the p.v.c. paste resin 16 in the paste 2 and will be moved outwardly and bloom to the surfaces of the mesh 3; further, due to the ingredient of bacteriostat 12 which is well compatible with the sec plasticizer 11, when the sec plasticizer 11 is moved outwardly to the surfaces of the mesh 3. the bacteriostat 12 will bloom outwardly together with the sec plasticizer 11. In this way, when the temperature in the mesh pad 4 rises, the goal for the bacteriostat 12 and the sec plasticizer 11 blooming outwardly together to the surfaces of the mesh 3 can be achieved. this will provide slight function of a bacteriostatic reagent, yet the sec plasticizer 11 can have the effect of moving outwardly to the surfaces of the mesh 3 in a long period (circa 2 - 3 yrs.).. thus availability of the reagent effect of the mesh pad 4 is effectively prolonged.

The chemical characteristic of the filler 18 (CaCo., 50 PHR) added in the paste 2 will render the compatibility between the sec plasticizer 11 and the p.v.c.paste resin 16 to be even worse. so that when the weather changes or when the temperature rises, due to thermal expansion and cooling shrinkage, the sec plasticizer 11 is and the bacteriostatic reagent 12 are easier to be moved outwardly, therefore, if the mesh pad 4 is used on a bed in a hospital or a house as a mattress or a cusion, the bacteriostat 12 will be volatilized in virtue of the body heat of a man, and bacteriostatic effect can be achieved, in this way, pathologlical change of skin on a patient due to humidity can be eliminated in virtue of emission of the bacteriostat 12 when he is unable of getting about and has stayed in the bed or the chair for a long time.

There is another embodiment of the present invention, i.e., the mesh pad 4 is cut into a shoe pad, there is a sealed space within a shoe, yet most time in a day, people almost wear on a pair of shoes, many people have the trouble of itch and bad order on feet, and even of the Hong Kong feet, this is because of malventilation as well as humidity in the space of the shoes, and of course pathogenic bacteria such as fungi may breed, and pathologlical change of skin may induced; therefore, when a shoe pad of the present invention is used in a shoe, temperature of a foot can render the bacteriostat 12 to emit to impede fungi from breeding, to prevent Hong Kong feet and bad order of the feet, and to maintain the feet in a clean state; as shown in Fig. 3, there is an embodiment 5 of the shoe pad, the p.v.c paste can be applied with a sheet 6 of cloth, leather etc. to provide for the user thereof a smooth touch.

By the fact that the mesh is taken as the base of the mesh pad 4, the paste 2 thereon will take a larger area than that on a solid plane mesh pad, and efficiency of the volatilized bacteriostat 12 during blooming will be superior comparatively, moreover, a blowing agent 17 is added in the paste 2 of the mesh pad 4, hence the formed mesh pad 4 can be quite flexible as well as elastic, feels extremely comfortable, if it is used as a shoe pad, the mesh having good ventilation can further provide with massaging function for the feet, thus promotes metabolism and circulation of blood.

The invention is, therefore, novel and practical in providing special principle and technique thereof, and has excellent function which lasts for long, and versatile usage and low cost as well as simple process of production, so that it is practical as to the normal life of the mankind. It is, thereby, to be limited only by the scope of the appended claims.

is

Claims

CLAIMS 1. A method for manufacturing a fungistatic and bacteriostatic mesh

pad comprised of a mesh and a paste. wherein said paste being composed of and mixed with a a p.v.c. paste resin. a sec plasticizer, a stabilizer, a bacteriostatt a filler and a blowing agent, said mesh is dipped into said paste, thereby the surfaces of said mesh are all adhered with said paste; and wherein said sec plasticizer and said p.v.c. paste resin are chemically bad in compatibility, therefore, when the temperature outside goes higher, said sec plasticizer will be rejected by said p.v.c. paste.resin in said paste and will be moved outwardly and bloom to the surfaces of said mesh; further, because said bacteriostat is well compatible with said sec plasticizer, said bacteriostat will move outwardly together with said sec plasticizer, in this way, a fungistatic and bacteriostatic mesh pad can be obtained.
2. A method for manufacturing a fungistatic and bacteriostatic mesh pad as stated in claim 1, wherein said paste is composed of and sufficiently mixed with DHP 40 PHR and DOA 40 PHR sec plasticizers and a 8 PHR bacteriostat, then is added with a 3.5 PHR stabilizer (K-Ba -Zn in liquid state), after uniform mixing, a 100 PHR p.v.c. paste resin, a 4 PHR blowing agent and a 50 PHR filler (CaCo.,) are finally added, the mixed material --g- is stirred continuously for about 40 - 60 min. at the room temperature till a paste of about 3,500 - 4,000 c.p.s. viscosity is obtained. a preferred embodiment of mesh pad having preferred effect can thus be obtained.
3. A method for manufacturing a fungistatic and bacteriostatic mesh pad as stated in claim 1. wherein said mesh is dipped into and adhered with said paste and is heated for curing at a temperature of about 1500C - 180 OC, and is taken out after 2 - 3 min., thereby the surfaces of said mesh can be adhered with better efficien- cy.