ES2678424B2 - PREPARATION OF EXPANDED PEARL AND ITS USE IN PRODUCTS FOR SMOKING IN WATER PIPES - Google Patents

Description

D E S C R I P C I O N

PREPARATION OF EXPANDED PEARL AND ITS USE IN PRODUCTS FOR

SMOKING IN WATER PIPES

SECTOR OF THE TECHNIQUE

The present invention relates to the preparation and use of expanded perlite as an absorbent and support material for the evaporation of flavored liquids when heated in a water pipe, constituting therefore the mixture of expanded perlite and liquid, a new product for smoke in water pipes.

BACKGROUND OF THE INVENTION

Perlite is a natural mineral of volcanic origin that contains sodium, potassium and aluminosilicate, classified with the number CAS 93763-70-3, and that at high temperatures is transformed by expansion giving rise to the mineral called expanded perlite. The resulting expanded perlite is a low density mineral (between 50 and 125 kg / m3), porous, with a remarkable absorption capacity, insoluble in water and solvents, inert, and classified as non-toxic, for which reason it is authorized for use in horticulture and other applications.

The applications of expanded perlite are generally very widespread, one of the main ones being its use as a component of construction materials, as is the case of its use in lightweight cement mixtures with high performance (as cited in US2016289121 (A1), entitled "HIGH STRENGTH CONCRETE COMPOSITION AND METHOD"). The use of expanded perlite has also been described for the preparation of acrylic coatings with flame retardant properties, in particular for the protection of bamboo constructions (CN105694621 (A), "Fireproof coating for household bamboo products"). In application KR101637322 (B1), "COMPOSITION CONTAINING APPLE POMACE EXTRACT AS EFFECTIVE COMPONENT", the use of perlite is proposed in a filtration process of ethanolic extracts of natural residues, based on the porosity of the expanded perlite and its inert character . Likewise, in the application US2016303001 (A1) "POWDERY COSMETIC COMPOSITION" by Tsubata Kazuyoshi, the inclusion of Perlite pulverized in proportions between 5 and 70% by weight in powdery products for cosmetic use. The diversity of applications of expanded perlite is high, for example the invention CN105669291 (A) "Nutrient medium for raising seed of Cestrum purpureum and preparation method thereof", describes its use in nutritive media for the growth of Cestrum purpureum, which include Its composition includes various plant and mineral components apart from the expanded perlite, which translates into an adequate transplant system and growth of the shoots, all taking advantage of the non-toxic nature and compatible with the environment of the expanded perlite. Another application of expanded perlite is based on its incorporation into the treatment of paper pulp in the manufacturing process of paper varieties that show special stiffness, stability and strength, as described in patent US2016194829 (A1) "PAPER PULPING PROCESS AND COMPOSITION ".

Among all the applications described for expanded perlite, none have been found that refer to its use associated with water pipes, hookah or shisha, nor have any references been found where it is used as a support for evaporation by heating liquids to smoke in water pipes.

Although there are various materials mixed with liquids described for uses in water pipes, none of them consists in the use of expanded perlite in the terms described in the present invention. Thus, DE 198 54 009 C2 proposes the use of aluminum oxide, silica gel, cellulose, lignin granules, zeolites, aluminas and combinations thereof. In the WO 2009/010176 A2 and DE 102007043776 A1 the use of dolomite, montmorillonite, or diatomaceous earth is proposed. In the patent DE 202010004671 U1 the use of clinoptilolite (a variety of zeolite) is mentioned. The zeolite is also proposed for use in water pipes in the patent US2014305456 (A1) "AEROSOL-FORMING MATERIAL FOR A HOOKAH". Finally, patent US2014069446 (A1) "TOBACCO FREE HOOKAH SMOKING SYSTEM" describes the use of porous spheres based on synthetic materials or recycled glass.

The authors of the present invention have surprisingly observed that the expanded perlite authorized for agricultural use can be treated and adapted to be used for smoking liquid preparations in water pipes, for this it is necessary to clean and select the expanded perlite for the material be suitable for this use.

EXPLANATION OF THE INVENTION

The object of the present invention comprises the use of expanded perlite as an inert mineral support for evaporation by heating liquids in water pipes (also known internationally as hookha, shisha or hookah). The heating of the product prepared based on a mixture of flavored liquid and expanded perlite (conveniently treated and selected) in a water pipe produces an effect of rapid evaporation, which after passing through the water pipe results in a remarkable generation of smoke formed mainly by water vapor and aromas, obtaining the effect of smoking.

It also forms part of the object of the invention the treatment of expanded perlite for agricultural use that makes it a solid support suitable for use in water pipes. Expanded perlite for agricultural use undergoes a process of washing and selection of particle size, which leads to the production of clean and dry expanded perlite, between 3 and 6 mm in particle diameter, and devoid of typical pulverulent residues. of the starting material, and which would interfere with the intended use of the present invention.

It also forms part of the object of the invention the use of expanded perlite, conveniently treated and selected, mixed with liquids composed of some of the following components: glycerin, propylene glycol, polyethylene glycol 400 and aromas, resulting in a mixture that can be smoked by heating in a water pipe.

PREFERRED EMBODIMENT OF THE INVENTION

Expanded perlite for agricultural use is a solid material composed of particles ranging from pulverulent material to grains 6-7 mm in diameter. Under these conditions the material is not suitable for use in a water pipe because the particle size dispersion and the high dust content discourage its use because of the danger of inhaling light particles both in its handling and in the intended use in the present invention. To be able to use the expanded perlite it is therefore necessary to select light and porous particles of large size within the range of the material, that is between 3 and 6 mm in diameter, neglecting the heavy particles, the smallest and eliminating the pulverulent fraction contained in the original material

A process for the conditioning of the expanded perlite is formed part of the object of the invention by which an amount of expanded perlite is taken and sieved through a 3 or 4 mm diameter screen to eliminate the small particles, in some adequate conditions of air extraction and protection due to the significant content of dust that is easily suspended in the air and may be counterproductive to inhalation. Once the size is selected, the material is treated with water by immersion in a bath, making a gentle agitation, then the material is cast through a mesh of 3 or 4 mm in diameter and washed with water ensuring that there are no small particles or pulverulent, drained and dried by a stream of air first and then in a stove or dryer at the right temperature (between 50 ° C and 105 ° C).

Also part of the object of the invention is the mixing of expanded perlite (washed, selected and dried) with liquids composed of some of the following components: on the one hand glycerin and on the other propylene glycol or polyethylene glycol-400, in proportions between 1: 10 and 10: 1, and adding to the mixture one or more aromas in final percentage comprised between 0.05 and 10%, resulting in a mixture that can be smoked by heating in a water pipe.

In a preferred embodiment, between 8 and 10 grams of expanded perlite (washed, selected and dried) are mixed with 32-36 grams of waterpipe liquid, the mixture is prepared directly in a can or jar of 100 to 125 ml of volume, adding both components properly weighed or dosed, covering and sealing the container and subjecting the assembly to a slight agitation by inversion.

Examples

The following examples describe the preparation of nicotine-free waterpipe products that only contain expanded perlite (washed, selected and dried) and a liquid composed of the mixture detailed therein.

The following indications on the procedure for the preparation of the mixtures and the products are of general character:

- Vegetable glycerin USP / PhEUR 99-99.9%, CAS 56-81 -5, E422 is used

- Propylene glycol USP / PhEUR 99-99.9%, CAS 57-55-6, E1520, or Polyethylene glycol is used 400 USP / PhEUR, 99-99.9%, CAS 25322-68-3,

- The aromas used correspond to suppliers of certified flavors, the products are free of potentially harmful components or residues.

- The washed and selected expanded perlite is dosed by a solids dispensing machine, and is particle size between 3 and 6 mm devoid of dust. - The liquid mixtures are dosed by a dosing pump adjusting the dose to the required liquid weight.

- The name Shisha Pearls is used to refer to the finished product composed of expanded perlite (washed, selected and dried) and the corresponding smoking liquid in a water pipe.

- All operations and washes are carried out at 25 ° C, unless otherwise indicated.

Example 1.- Preparation of expanded perlite

Starting from a weight of 10 kg of commercial expanded perlite suitable for use in horticulture, the material is sifted through a mesh of 3-4 mm in diameter. The fraction of particle size greater than 3 mm is poured into a container with sufficient water and subjected to slight agitation to separate the heavy particles, which settle to the bottom. The light particles that float in the water are collected with a mesh of 3-4 mm in diameter and washed under a shower of water to drag dust particles that have remained adhered. Finally the contents of the mesh are drained and overturned in a tray suitable for drying. The material is dried in the air or in an oven and stored dry for later use. Between 4 and 6 kg of dry expanded perlite, clean and with a size between 3 and 6 mm, are obtained.

Example 2.- Preparation of Shisha Pearls to the aroma of Pippermint

In a 5 liter capacity polyethylene container, 2555 g of USP / PhEUR Vegetable Glycerin, 2150 g of Polyethylene Glycol 400 USP / PhEUR and 300 g of Pippermint flavor are mixed, the mixture is stirred with the covered container and let it rest. The mixture is connected to a dosing pump and the dose is adjusted to a weight of 34 g of liquid. 100 ml PET bottles are used to fill the cans. 9 g of expanded perlite are placed in each can and then 34 g of liquid are dosed. The assembly is covered with a threaded lid with a heat-sealable cover, sealed and once sealed, shaken slightly by investment.

Example 3.- Preparation of Shisha Pearls with other aromas

Following the same procedure described in Example 2, for the use of other flavors the proportions of Vegetable Glycerin USP / PhEUR (VG), Propylene Glycol USP / PhEUR (PP) or Polyethylene Glycol 400 USP / PhEUR (PEG400) and aromas of according to the following table:

Each of the above mixtures is stirred with the capped container and allowed to stand. The mixture is connected to a dosing pump and the dose is adjusted to a weight between 32 and 34 g of liquid. 100 ml PET bottles are used to fill the cans. In each canister, between 8 and 10 g of expanded perlite are available (washed, selected and dried) and then between 32 and 34 g of liquid are dosed. The assembly is covered with a lid fitted with a heat-sealable cover, sealed by heat sealing and then slightly shaken by inversion.

Example 4.- Use of Shisha Pearls in a water pipe

An amount equivalent to a couple of tablespoons of coffee of a product prepared in Example 2 or Example 3 is taken (the product must be well mixed before dosing, which is done by inverting and moving the covered can) and available in a Funnel or Bowl, for hookah, shisha or hookah (images accessible on the internet looking with the words phunnel shisha bowl), which allows to retain the liquid without going directly by gravity to the bottom of the water pipe. The set is covered with aluminum foil and between 6 and 10 holes are made in the center with a needle or toothpick. The casserole is adapted to the shisha or water pipe, a charcoal is placed on top of the aluminum foil, covering the holes made, or another heating system. When the end of the suction hose of the water pipe is sucked, the formation of smoke with an intense pippermint flavor is very evident, producing an effect similar to smoking. For a single user, the system can work like this between 20 and 45 minutes depending on the frequency and intensity of the aspirations.

Claims (4)

1. - The use of expanded perlite mixed with a liquid composed of a mixture of: A) Vegetable glycerin USP / PhEUR B) Propylene glycol USP / PhEUR and / or Polyethylene glycol 400 USP / PhEUR, in proportions A: B comprised between (1: 10) and (10: 1), and C) one or more flavors in a content comprised between 0.5 and 10% of the total mixture, constituting a new product for smoking in hookahs, hookahs or shisha . 2. The use according to claim 1 wherein the expanded perlite is formed by selected and clean particles, devoid of dust, and of size comprised between 3 and 6 mm in diameter. 3. - A process, according to claim 2, for preparing expanded perlite from commercial expanded perlite for use in horticulture, based on its screening, washing with water, filtering and drying, so that clean and dust-free particles are selected of size comprised between 3 and 6 mm in diameter. 4. - Use according to any of claims 2 to 4 wherein the aromas are preferably: Double Apple, Pippermint, Pineapple, Mint, Melon, Raspberry, Strawberry, Cola, Red Bull, Mojito, Fruits of the Forest, among other possible.