Composition for application to a shoe sole to increase a coefficient of static friction of the shoe sole with a substrate

Abstract

Composition for application to a shoe sole to increase a coefficient of static friction of the shoe sole with a surface with which the shoe sole comes into contact during normal use of the shoe, comprising the following ingredients: - beeswax with a content between 50.0 wt% and 75.0 wt%, - a vegetable oil with a content between 20.0% and 30.0% by weight, - a product obtained by distillation from tree resin with a content of between 5.0% and 20.0% by weight, the sum of all ingredients being 100.0% by weight.

Description

[0001] The invention relates to a composition for application to a shoe sole to increase a coefficient of static friction of the shoe sole with a substrate with which the shoe sole comes into contact during normal use of the shoe, which composition comprises the following ingredients: - beeswax with a content of between 50.0% and 75.0% by weight, a vegetable oil with a content of between 20.0% and 30.0% by weight, a product obtained by distillation from tree resin with a content of between 5.0% and 20.0% by weight, the sum of all ingredients being 100.0% by weight.

[0002] The problem with sports halls in particular is that, depending on how clean they are, the floor can be very slippery, which means that athletes are at increased risk of injury if they slip.

[0003] To increase the coefficient of static friction between a material used to form the sole of an athlete's shoe and a sports hall floor – usually linoleum – a so-called latex spray is known from the prior art. Latex spray has the disadvantage that its ingredients chemically attack the hall floor, especially linoleum. Furthermore, the results of increasing the coefficient of static friction are unsatisfactory and only very short-term.

[0004] The object of the invention is to create a composition according to claim 1 which leads to a particularly good increase in the coefficient of static friction in the material pairing shoe sole / hall floor and which is also particularly durable.

[0005] Furthermore, the invention is based on the object of creating a sustainable composition which also consists exclusively of essentially natural raw materials.

[0006] This problem is solved by the features of claim 1.

[0007] The applicants have recognized that a composition of beeswax, a vegetable oil and a distillate of tree resin creates a composition that solves this problem.

[0008] Furthermore, the applicants have determined that such a composition can be easily removed from a sports hall floor. Organic solvents or harsh chemical cleaners are not required.

[0009] Furthermore, a composition according to the invention is suitable for any soil without damaging it, that is to say in particular without chemically attacking it.

[0010] By using vegetable oil, the consistency of the composition can be adjusted. The applicants have determined that a maximum of 30 wt.% of vegetable oil results in a particularly usable composition. At concentrations greater than 30 wt.%, a honey-like mass is formed, which makes application to a shoe sole difficult, thus significantly complicating its handling.

[0011] If the proportion of product obtained by distillation from tree resin exceeds 20% by weight, a homogeneous composition is not achieved, i.e. individual ingredients precipitate out, making the composition as a whole unusable.

[0012] The vegetable oil is preferably jojoba oil, coconut oil and / or olive oil.

[0013] The applicants have recognized that one of these oils or mixtures thereof allows, on the one hand, easier processing in the preparation of the composition and, on the other hand, leads to a pleasant fragrance.

[0014] In one embodiment of the invention, the product obtained by distillation from tree resin is obtained by distillation of a natural resin obtained from balsam or from the rootstocks of coniferous trees.

[0015] It is advantageous to use readily available, natural raw materials.

[0016] It has been shown that the use of tree resin in combination with a vegetable oil and beeswax creates a particularly easy-to-work composition that allows for the creation of an optimal coefficient of static friction between the shoe sole and a surface such as the floor. In the claimed composition, the ingredients are particularly easy to mix.

[0017] In a further embodiment of the invention, the product obtained by distillation from tree resin is obtained from the resin of pine, spruce and / or fir.

[0018] The applicants have recognized that resin from one of these three conifers or mixtures thereof provides the best results in terms of increasing the coefficient of static friction and is also inexpensive and readily available.

[0019] Conveniently, the product obtained by distillation from tree resin is rosin.

[0020] Rosin, also known as violin resin, has proven to be particularly suitable when mixed with beeswax and a vegetable oil to produce a composition that has a particularly high coefficient of static friction between the shoe sole and the linoleum floor.

[0021] In one embodiment of the invention, the coefficient of static friction of a shoe sole treated with the composition with a linoleum surface of a floor is between 0.60 and 0.80, preferably 0.68 to 0.74.

[0022] The applicants have found that the coefficient of static friction without treatment of the shoe sole with a composition according to the invention is between 0.30 and 0.48, and increases to at least 0.60 with the composition.

[0023] Tests with athletes have shown that a shoe sole treated with a composition according to the invention leads to a significantly reduced risk of slipping, which was particularly observed in indoor sports with rapid changes of direction such as handball, basketball or volleyball.

[0024] In a further embodiment of the invention, the composition is free of rubber. Advantageously, a composition with a particularly broad range of applications is created. This is suitable for any floor and does not damage it.

[0025] A composition according to the invention is advantageously presented in the form of a glue stick.

[0026] It is advantageous that it is easy to use, especially for coating the sole of a shoe.

[0027] A shoe according to the invention, in particular a sports shoe, is characterized in that it has a composition according to the invention.

[0028] Although the composition is particularly suitable for indoor athletes, it is conceivable that the soles of other shoes could be coated with it, for example sneakers or other shoes intended for everyday use.

[0029] The coating is applied to part or all of the sole of the shoe.

[0030] Depending on the application, an optimal coating surface can be selected.

[0031] In one embodiment of the invention, a partial coating is applied to the shoe sole in the area of ​​a forefoot.

[0032] Such a partial coating has proven particularly effective in reducing the risk of injury; a full-surface coating is advantageously not required.

[0033] The invention is described below using an embodiment. Example 1:

[0034] To prepare a composition according to the invention, 3g of rosin was crushed and melted together with 10g of beeswax in a water bath. 5g of jojoba oil was added to this melt while stirring continuously.

[0035] The molten composition was poured into a container similar to a glue stick to cool and solidify.

[0036] After cooling, the sole of an indoor sports shoe was fully coated with the composition. The composition was applied using the container, similar to a glue stick.

[0037] In tests to determine the coefficient of static friction for a material pairing shoe sole / linoleum floor, a coefficient of static friction of 0.70 was determined for a composition according to Example 1.

Claims

[1] Composition for application to a shoe sole to increase a coefficient of static friction of the shoe sole with a surface with which the shoe sole comes into contact during normal use of the shoe, comprising the following ingredients: - beeswax with a content between 50.0 wt% and 75.0 wt%, - a vegetable oil with a content between 20.0% and 30.0% by weight, - a product obtained by distillation from tree resin with a content of between 5.0% and 20.0% by weight, the sum of all ingredients being 100.0% by weight. [2] Composition according to claim 1, characterized by that the vegetable oil is jojoba oil, coconut oil and / or olive oil. [3] Composition according to claim 1 or 2, characterized by that the product obtained by distillation from tree resin is obtained by distillation of a natural resin obtained from the balsam or from the rootstocks of coniferous trees. [4] Composition according to any one of claims 1 to 3, characterized by that the product obtained by distillation from tree resin is obtained from the resin of pine, spruce and / or fir. [5] Composition according to any one of claims 1 to 4, characterized by that the product obtained by distillation from tree resin is rosin. [6] Composition according to any one of claims 1 to 5, characterized by that the coefficient of static friction of a shoe sole treated with the composition with a linoleum surface of a floor is between 0.60 and 0.80, preferably 0.68 to 0.

74. [7] Composition according to any one of claims 1 to 6, characterized by that the composition is free of rubber. [8] Composition according to any one of claims 1 to 7, characterized by that the composition is presented in the form of a glue stick. [9] Shoe, in particular sports shoe, the sole of which has a coating comprising a composition according to any one of claims 1 to 8. [10] Shoe according to claim 9, characterized by that the coating covers part or all of the shoe sole. [11] Shoe according to claim 10, characterized by that a partial coating is applied to the sole of the shoe in the area of ​​a forefoot.