SK284892A3 - Waxed dental thread - Google Patents

Abstract

A waxed dental thread consisting of a bunde of polypropylene fine fibril whereby individual smooth fibrils from polypropylene have a noncircular cross rust, unit length mass from 5 to 8 dtex, total length mass from 400 to 1200 dtex and a surface of thread is treated by 15-35 wt. per cent of paraffin wax, e.g. with a content 5-20 wt. per cent of beeswax and 0.5-5.0 wt. per cent of methol, respectively other medicinal and/or aromatized substance, with softening temperature 55-60 degree Celsius.

Description

The invention relates to a waxed dental floss of polypropylene, consisting of fine profiled fibrils, which are held in a compact bundle by a layer of treated paraffin wax. It falls within the health sector for dental or hygiene purposes.

BACKGROUND OF THE INVENTION

The dental floss is specially designed for cleaning the interdental spaces, the edges of the teeth including crowns and bridges. By brushing the teeth in the interdental spaces and below the edge of the gum (where not -.-: 0 = blunt toothbrush) the dental floss slows through the settling. multiplication of substances that form dental bacterial coatings. These are extremely dangerous and are in fact the main cause of tooth decay, bleeding and gum inflammation. In the course of the infection, the bone bed in which the tooth is deposited and the rocking, or even the tooth loss, will also be damaged. Dental floss is used at least once a day. Bacterial coating is formed in 24-36 hours. The use of dental floss with thorough brushing with toothbrush and paste is recommended especially in the evening before bedtime, since Dakrerial pc.lck is most active during sleep.

Both natural and synthetic materials are used for the production of dental floss (USr. 4, 033,365) and these further differ in the type of coating used. It protects dental floss consisting of fibrils of nylon 6, nylon 66, viscose, acetate polymer, polyester, polyethylene or polypropylene. The protection here is the construction of a dental floss of from 25 to 1,000 fibrils in a bundle of yarns containing either a wax coating or a non-wax coating. This non-waxed is selected from the group consisting of alkyl monoesters, polyvinyl ether of maleic acid, polyvinylpyrrolidones and many others. The floss also has a protected number of yarn twists.

- 2 Conventional dental floss consists of a nylon multifibrillar bundle. They have the disadvantage of low tensile strength or low strength, which tears in use and is not suitable for cleaning the interdental spaces. The self-lubricating properties of the yarns are weak, making them prone to stick between the teeth and cause discomfort in use. Fibers with a high coefficient of friction further reduce the comfort of use because you are using! must use considerable force to draw the thread into the interdental spaces.

0/270 866 protects the yarn of individual fibrils from 5 to 8 dtex of unpainted polyamide based polycaproamide containing 0.01 to 0.95 wt. aromatic and / or medicinal substances. The polyamide has a direction of 12 arcs and / or loops per cm of length. 0ο / 7Γ> 480 protects the physically and / or chemically potentiated yarn that is on its surface and between the elementary ones ;;.! fibers impregnated with disinfectants, astringents or anticaries to improve wettability.

The polyolefin polymers used in dental floss manufacture protect other patents. ΕΡ £ 335th 466 protects dental floss of modified polyethylene, namely polytetrafluoroethylene, coated with an adherent microcrystalline wax with a melting point of 76-80 ° C. In addition, the yarn combines in at least one active material, especially of anti-tartar, bone and plaque flow, and a coagulant is also present.

EPC 339-935 protects a dental floss composed of elongated multifibrillar ultra-high molecular weight polyolefin with an intrinsic viscosity of at least 5 dl / g and a process for its manufacture. The polyolefin is an ultra-high molecular weight, polyethylene, defined ethylene / alpha-olefin copolymer, wherein the A-olefin is at least 1 propylene, butene-1,4-methylpentene-1, hexene-1, octene-1 and tecene-1.

that synthetic fiber of polypropylene also meets the requirements for dental floss. For this purpose, different types of isotactic polypropylene polymer can be used which comply with the applicable hygienic hygiene standards and must incorporate all other additives used in the preparation of strand yarns. Smooth fibers with a circular profile in a twisted form have a good cleaning effect, with the number of twists varying and not critical.

SUMMARY OF THE INVENTION

The present invention provides a waxed dental floss consisting of a bundle of polypropylene fine fibrils, wherein the single smooth polypropylene fibrils have a non-circular cross-section, a unit length of from 5 to 8 dtex, a total length of fineness of 400 to 1200 dtex and a thread surface of 15 to 35 % wt. paraffin wax with a Z d of 2% w / w; other therapeutic and / or flavoring agent and its softening temperature is 55-65 ° C.

The essence of the present invention is that; the smooth fibers are transversely profiled and a greater usable fiber surface area contributes to the cleaning effect on the tooth surface.

The dental floss preparation itself consists of two operations:

preparing a profiled smooth twisted multifibrillary fiber f -waxing-fibers.

For the different types of hygienically harmless polypropylenes, different technological modes of preparation of oriented fibers must be chosen. The resulting profiled plain twisted fibers suitable for the preparation of dental floss must have a strength above 3 cN / dtex. Treated paraffin wax is applied to the surface of the fiber bundle. In addition to the basic paraffin wax component, beeswax and various drugs, respectively, are present. flavoring additives. Dental wax slides well on the tooth surface in the interdental spaces.

The advantage of waxed dental floss of polypropylene is that in contact with the aquatic environment - saliva, no substances are released in contrast to e.g. polyamide 6, the monoTicry and bitter taste oligomers are released from the corroene.

Examples of the invention

Example 1;

From the TATREN TI 902 / P polymer with a flow index of 25 to 31 g / 10 min, non-stretched polypropylene fibers with a triangular profile were prepared by spinning using a health-friendly product. spinning preparation BK 20B3. The undrawn fibers were elongated to obtain a unit densities of 6.2 dtex. The fibers were bundled to a final density of 620 dtex. The fibers were given a twist of 70 per meter. The twisted fibers were fixed. The total fiber bundle strength was 3.5 cN / dtex and the ductility was 45%. In a stack, the nach- ^J ~ alo 100 molded primary fibrils. The crosslinked fibers thus prepared were waxed. A paraffin wax containing 10 .mu.m was prepared for this purpose. beeswax and 5 wt. menthol. The softening temperature of the treated wax was determined to be 57 ° C by differential thermal analysis. 21% wt. treated paraffin wax on a special laboratory equipment. This resulted in a waxed yarn to be used. For dispatch purposes, waxed dental floss is wound onto small wristbands which, after heat setting in an oven, are placed in suitable hygienic containers.

Example 2:

Pre-oriented polypropylene fibers with a trilobal profile were prepared by spinning from TATREN HPF 321 polymer with a flow index of 11 g / 10 min using a health-friendly spinning preparation BK 2083. The pre-oriented fibers were further fed to a final density of 750 dtex / 96 fibrils. Twists were given to the fibers at 100 twists per meter. The fibers were fixed at 120 ° C. The resulting mechanical properties of the fibers are; strength 3.40 cN / dtex and elongation 36%.

For waxing of the fibers, treated paraffin wax containing 20 wt. beeswax with 5 wt. menthol. The softening temperature of the treated wax is determined by the differential thermal analysis method

- 5 zy was 62 ° C. On a special laboratory apparatus, 35% wt. wax. Thus, waxed dental floss was prepared for further use. It was suitably hygienically packaged for dispatch as in Example 1.

Example 3 *.

From TATREN HPF 321 polymer with a flow index of 11 g / 10 min. pre-oriented cross-sectional fibers were prepared by spinning using a non-toxic spinning preparation BK 2083 under the conditions of fiber preparation and treatment according to Example 2. The resulting mechanical properties of the fiber are: strength 3.2 cN / dtex, elongation i ···.

Example

From the TATREN TI 902 / P polymer with a flow index of 25 to 31 g / 10 min, non-stretched polypropylene fibers with a triangular profile were prepared by spinning using a non-toxic spinning preparation BK 2083. The non-stretched fibers were hot-burned, their unit weight was 5. 8 dtex.

The fibers were bundled together with a total length of 580 dtex. The fibers were given a twist of 70 per meter. The 3 fibers had a total strength of 3.5 cN / dtex and an elongation of 65%.

The crimped twisted fibers were waxed. For this purpose, a paraffin wax containing 5 wt. beeswax and 5 wt. menthol. The softening temperature of the treated wax was determined to be 57 ° C by differential thermal analysis.

15% wt. treated paraffin wax on a special pilot plant. A waxed dental floss was prepared for use. For shipping purposes, waxed dental floss e.g. it is put into small ankles, which after heat fixing in an oven are placed in suitable hygienic packaging.

- 6 Example 5 ‘. -

Pre-oriented polypropylene fibers with a trilobal profile were prepared by spinning from TATREN HPF 321 polymer with a flow index of 11 g / 10 min using a health-friendly spinning preparation BK 2083. The pre-oriented fibers were further fed and the total density was 616 dtex / 100 fibrils. Twists were given to the fibers of Θ7 twists per meter. The fibers were fixed at 120 ° C. The resulting mechanical properties of the fibers are a strength of 3.01 cN / dtex and 49.4% ductility.

For waxing of the fibers, treated paraffin wax containing 20 wt. beeswax and 2 wt. menthol. The softening temperature of the treated wax as determined by the differential thermal analysis method was 57 ° C. 26% wt. wax on the coating of bundles of twisted fixed fibers. Thus, waxed dental floss was prepared for further use. It was suitably hygienically packaged for dispatch as in Example 1.

Industrial usability

The waxed dental floss according to the invention is useful as a suitable cleaning aid for the cleaning of the flute. j. Oral cavity

Claims (1)

Waxed dental floss consisting of a bundle of polypropylene novel fine fibrils, characterized in that the individual smooth polypropylene fibrils have a non-circular cross-section, a unit length of from 5 to 8 dtex and a total length of from 400 to 1200 dtex, the thread surface being treated 15 to 35 wt. % paraffin wax containing 5 to 20 wt. beeswax and 0.5 to 5.0 wt. menthol, respectively. other medicinal and / or aromatizing softening 55 to 65 ° C.