WO1999058409A1

WO1999058409A1 - Slip-preventive vessel cap and method for the preparation thereof

Info

Publication number: WO1999058409A1
Application number: PCT/KR1998/000118
Authority: WO
Inventors: Jae-Hoon Park
Original assignee: Park Jae Hoon
Priority date: 1998-05-12
Filing date: 1998-05-12
Publication date: 1999-11-18
Also published as: AU7455998A

Abstract

An easily openable slip-preventive vessel cap which is prepared by coating, contacting or adhering a material having a large friction coefficient to the outer surface of a conventional vessel cap, by attaching an adhesive tape prepared from the material to the vessel cap, or by encircling the vessel cap with a ring prepared from the material; and a method for the preparation thereof.

Description

- 1 -

SLIP-PREVENTIVE VESSEL CAP AND METHOD FOR THE PREPARATION THEREOF

FIELD OF THE INVENTION

The present invention relates to a vessel cap having a slip-preventive treatment and a method for the preparation thereof. More specifically, it pertains to an easily openable slip-preventive vessel cap which is prepared by coating, contacting or adhering a material having a large friction coefficient to the outer surface of a conventional vessel cap, by attaching an adhesive tape prepared from the material to the vessel cap, or by encircling the vessel cap with a ring prepared from the material; and a method for the preparation thereof.

BACKGROUND OF THE INVENTION

The conventional vessels made of glasses, plastics or metals are provided with a sealable vessel cap and, accordingly, the contents of the vessel can be took out therefrom after turning the vessel cap to be opened with seizing the vessel and the vessel cap by the hand.

A conventional vessel has a spiral groove on the outer upper end and the sealable vessel cap also has a spiral groove inside thereof. Therefore, the vessel may be sealed by fitting the spiral groove of the vessel to that of the vessel cap and then turning the vessel cap. To the contrary, the contents of the vessel can be taken from the vessel after separating the vessel cap by turning it to the opposite direction. Hitherto, slip of the vessel cap has been prevented by making the circumference of the vessel cap in a jagged form. However, when the vessel cap is fasten too tightly or when the vessel cap is removed from a vessel which has moisture on the surface thereof upon the exposure to the air after being taken from a refrigerator, there is a problem that the vessel cap is not easily removable because it slips off the hand. In this case, it is inconvenient because the vessel cap should be opened with wrapping it by using a wet towel or napkin. When it is attempted to open the vessel cap with a bare hand, an excessive power should be applied, which frequently inflict a wound on the hand due to the sharp lower end of the vessel cap. Moreover, in case that the opening part of the vessel is wide, an excessive power should be applied and, even if an excessive power is applied, the vessel cap slips easily. Accordingly, it is very difficult to separate the vessel cap. The present inventors have endeavored to solve these problems and, accordingly, have accomplished the present invention by discovering the fact that a vessel cap can be easily separated from the vessel even if the circumference thereof is not ragged, when the outer surface of the vessel cap is treated with a synthetic resin, adhesive tape and/or rubber having a large friction coefficient and a high elasticity.

SUMMARY OF THE INVENTION

Accordingly, it is an object of the present invention to provide an easily openable slip-preventive vessel cap which is prepared by coating, contacting or adhering a material having a large friction coefficient and a high elasticity to a vessel cap. - 3 -

Another object of the present invention is to provide a method for preparing an easily openable slip-preventive vessel cap which comprises coating, contacting or adhering a material having a large friction coefficient and a high elasticity to a vessel cap.

DETAILED DESCRIPTION OF THE INVENTION

The slip-preventive vessel cap of the present invention is prepared by coating, contacting or adhering a material having a large friction coefficient and a high elasticity to the outer surface of a conventional vessel cap, by attaching an adhesive tape prepared from the material to the vessel cap, or by encircling the vessel cap with a ring prepared from the material; and a method for the preparation thereof. Examples of the material having a large friction coefficient and a high elasticity include soft plastic material, rubber and a mixture thereof. The vessel cap of the present invention may be prepared by coating, contacting or adhering the material itself to the cap or by attaching or encircling a plastic band, rubber band or paper tape made thereof to a conventional vessel cap.

Specific examples of such materials include soft acrylic resin, soft acetate resin, soft PVC resin, soft ABS resin, soft AS resin, soft EVA resin, soft polyether chloride resin, soft epoxy resin, soft vinylidene chloride resin, chloric polyethylene resin, chloric polypropylene resin, soft cellulose acetate resin, soft vinyl acetate resin, soft toluene resin, soft styrene-formalin resin, phenoxy resin, polyvinylbutyral resin, butoxy resin, polyacetal resin, soft polyamide resin, polyurethane resin, soft polypeptide resin, soft polyethylene - 4 -

resin, soft polypropylene resin, soft polycarbonate resin, soft polystyrene resin, polybutene resin, soft melamine resin, and the like conventional synthetic or semi- synthetic resins.

Among these resins, the hard resins may be soften by adding a suitable amount of plasticizer thereto.

Suitable plasticizers may include isooctyl isodecyl adipate, octyl decyl adipate, isodecyl adipate, dioctyl adipate, di-2-ethylhexyl adipate, di-2-ethylhexyl azelate, epoxy plasticizers, chlorinated paraffins, acetyl triethyl citrate, acetyl tri-2-ethylhexyl, triethyl citrate, acetyltributyl citrate, tributyl citrate, stearic acid plasticizers, dioctyl sebacate, di-2-ethylhexyl sebacate, dibutyl sebacate, tricrecyl phosphate(TCP), N-octyl N-decyl phthalate, dialphanol phthalate, dϋsodecyl phthalate, diethyl phthalate, dicyclohexyl phthalate, dioctyl phthalate, dinormal octyl phthalate, dibutyl phthalate, dimethyl phthalate, diheptyl phthalate, dilauryl phthalate, butyl benzyl phthalate, butyl lauryl phthalate, polyster plasticizers, methyl acetyl ricinolate, tricresyl phosphate, tetrahydrophthalic anhydride ester, trioctyl phosphate, tris(dichloropropyl) phosphate, triphenyl phosphate, polyester plasticizers, epoxy plasticizers, octyl capryl phthalate, and the like conventional plasticizers.

These materials may be coated on the outer surface of the vessel cap in a fluid state such as a plastizol or may be adhered to the vessel cap by using a conventional adhesive after preparing a soft sheet and cutting it to fit on the vessel cap. Representative adhesives useful in the present invention are conventional adhesives such as urea resin adhesives, melamine resin adhesives, vinyl acetate adhesives, phenol resin adhesives, epoxy resin adhesives, vinyl acetate resin emulsion adhesives, polychloroprene adhesives, acrylonitrile-butadiene rubber adhesives, SBR adhesives, acryl emulsion adhesives, natural rubber adhesives, cyanoacrylate adhesives, cellulose adhesives, asphalt adhesives, atarch and paper tape. In the present invention, rubbers may be used as a material having a large friction coefficient and a high elasticity.

Examples of such rubbers may include solution polymerized

SBR rubbers, SBR rubbers, NBR rubbers, chloroprene rubbers, stereo synthetic rubbers, butyl rubbers, polysulfide rubbers, urethane rubbers, alfin rubbers, fluorinated rubbers, silicone rubbers, acryl rubbers, etc.

The vessel cap coated with such rubbers may be prepared by coating the rubber on the circumferential surface of the vessel cap in the form of a latex and then drying it, or by solving the rubber in a solvent, coating the solution on the circumferential surface of the vessel cap and drying it.

In order to prevent the aging of the rubber, a suitable amount of the rubber accelerator may be added to the rubber.

Suitable rubber accelerators may include conventional rubber accelerators such as diphenylguanidine, di-O-tolylguanidine, thiocarbanilide, di-O-tolylguanidine salt dicatechol borate, mercaptobenzothiazol, dibenzothiazyl disulphide, MSA, NS, NBS,

2-mercaptoimidazoline 22, sodium dithiocarbamate and pipecoline.

The bands useful in the present invention may include rubber bands, plastic bands, plastic bands having an adhesive on one surface thereof, paper tape, etc.

The material having a large friction coefficient and a high elasticity may be coated in a thickness ranging from 0.01 to 2.0 mm. - 6 -

The coating width depends on the size of the vessel cap and it may be equal to or narrower than the height of the vessel cap.

The following Examples are intended to further illustrate the present invention without limiting its scope.

Further, percentages given below for solid in solid mixture, liquid in liquid, and solid in liquid are on a wt/wt, vol/vol and wt/vol basis, respectively, unless specifically indicated otherwise.

Example l:

A conventional spiral-form bottle cap was washed well and natural rubber latex was coated on the outer circumference thereof and then dried. This procedure was repeated twice to make a cap having a rubber layer of 0.2 mm thickness.

Example 2-

A small amount of dioctylphthalate was added to 10 g of polyvinyl chloride and the mixture was dissolved in 50 ml of dioxane to obtain a viscous solution. A conventional spiral-form bottle cap was washed well and the viscous solution was coated on the outer circumference thereof at a thickness of 0.1 mm. The solvent was evaporated therefrom to obtain a coated cap wherein soft PVC is coated and adhered on the outer circumference thereof.

Example 3: - 7 -

1 g of natural rubber was dissolved in 10 ml of ether and the resulting solution was coated on the outer circumference of a conventional spiral-form vessel cap. The solvent was evaporated and the coating procedure was repeated to make the rubber coating in 0.1 mm thickness. The surface of the rubber coating was vulcanized in accordance with a conventional method to obtain a vessel cap coated with natural rubber on the outer circumference thereof.

Example 4-

A plastizol containing polyvinyl chloride as a major component was coated on the outer circumference of a vessel cap so that the thickness of the coating becomes about 0.3 mm after drying it. The coating was dried to obtain a cap coated with a soft plastic on the outer circumference thereof.

Example 5:

A soft polyester sheet having a thickness of 0.1 mm was cut into sheets having a width of 0.5 mm and a length equal to the circumference of the cap. An adhesive was coated on one surface of the sheets and the coated surface was adhered on the center of the outer circumferential surface of a conventional spiral-form vessel cap to obtain a cap wherein a soft polyester sheet is adhered to the outer circumference thereof.

Example 6- A vessel cap having an outer diameter of 2 cm was encircled with a rubber ring having a thickness of 0.2 mm was encircled with an inner diameter of 1 cm on the center of its outer circumferential surface to obtain a vessel cap wherein the outer circumference thereof contacts with a rubber ring.

Example !'■

An adhesive tape having a thickness of 0.05 mm and being coated with an adhesive on one surface thereof was attached to the outer circumferential surface of a vessel cap to obtain a vessel cap attached with an adhesive tape on its outer circumference.

Example 8:

An adhesive paper tape having a thickness of 0.05 mm and being coated with an adhesive on one surface thereof was attached to the outer circumferential surface of a vessel cap to obtain a vessel cap attached with an adhesive paper tape on its outer circumference.

In accordance with similar methods to the above, other types of slip-preventive vessel caps may also be prepared by coating the vessel cap with other components or by adhering the components to the vessel caps.

While the invention has been described with respect to the above specific embodiments, it should be recognized that - 9 -

various modifications and changes may be made to the invention by those skilled in the art which also fall within the scope of the invention as defined by the appended claims.

Claims

- 10 -What is claimed is:

1. An easily openable slip-preventive vessel cap which is prepared by coating, contacting or adhering a material having a large friction coefficient to the outer surface of a vessel cap, by attaching an adhesive tape prepared from the material to the vessel cap, or by encircling the vessel cap with a ring prepared from the material.

2. The easily openable slip-preventive vessel cap of claim 1, wherein the material having a large friction coefficient is selected from the group consisting of conventional plastic materials, adhesive paper tapes and rubbers.

3. A method for preparing an easily openable slip-preventive vessel cap which comprises coating, contacting or adhering a material having a large friction coefficient to a vessel cap, attaching an adhesive tape prepared from the material to the vessel cap, or encircling the vessel cap with a ring prepared from the material.

4. The method of claim 1, wherein the material having a large friction coefficient is selected from the group consisting of conventional plastic materials, adhesive paper tapes and rubbers.