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Hydrophobic capsule, method for manufacturing capsule and smoking article containing capsule

A technology for smoking products and hydrophobic groups, which is applied in the manufacture of cigarettes, cigars, and smokers' supplies, and can solve problems such as capsule rupture, unintentional leakage of spices, and reduction of capsule structural integrity.

Active Publication Date: 2021-08-31
PHILIP MORRIS PROD SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Absorbed liquid may reduce the structural integrity of the capsule and cause inadvertent leakage of fragrance or rupture of the capsule

Method used

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  • Hydrophobic capsule, method for manufacturing capsule and smoking article containing capsule
  • Hydrophobic capsule, method for manufacturing capsule and smoking article containing capsule
  • Hydrophobic capsule, method for manufacturing capsule and smoking article containing capsule

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0088] Example 1: Initial Proof of Concept

[0089] The effectiveness of the hydrophobic treatment on the surface of the capsules was tested.

[0090] Capsules containing a menthol core and a shell mainly composed of gelatin were obtained from the company V. Mane Fils (France) and soaked in a solution containing palmitoyl chloride (C 16 fatty acid chloride) solution. After a short soak the capsules are air dried and then placed in an oven at 80°C-100°C for 2-8 minutes.

[0091] Untreated capsules (as obtained from V. Mane Fils Company) and hydrophobically treated capsules were placed on a flat surface. One drop of water was placed on each of the surfaces of the hydrophobically treated and untreated capsules. A picture of the capsule was taken a few minutes after the water drop was placed on the capsule ( Figure 4 ). exist Figure 4 In , untreated capsules are on the left and hydrophobically treated capsules are shown on the right. The thickness of the walls of the un...

Embodiment 2

[0093] Example 2: Additional Tests

[0094] I. Materials and methods

[0095] A.C. 16 fatty acid chloride grafting

[0096] Spherical capsules [V. Mane Fils Company (France)] (“Menthol Capsules”) having a diameter (menthol) of about 2 mm to about 3 mm with a shell comprising gelatin and a core comprising menthol were prepared using three grafting techniques. ) and Viscopearl (a roughly spherical object made of viscose and having a diameter of about 1 mm) (Rengo Company) with palmitoyl chloride (C 16 Fatty acid chloride (C 16 FAC)) grafting to determine which grafting techniques would work well for producing capsules with hydrophobic shells. Grafting reacts the FAC with hydroxyl groups present on the surface of the shell of the capsule to covalently bond the fatty acid to the shell. A by-product of the reaction is hydrochloric acid, which is vented.

[0097] The three grafting techniques used are outlined below:

[0098] 1. Oven

[0099] by adding C 16 FAC (2% by we...

Embodiment 3

[0151] Embodiment 3: sensory test

[0152] Capsules containing menthol and having a shell containing gelatin (V. Mane Fils company) (“menthol capsules”) were treated with C using four different methods. 16 Fatty acid chloride treatment to make C 16 Fatty acid moieties were grafted onto the surface of menthol capsules. The method was generally carried out as described above in Example 2 and included (i) hot air treatment at 150°C for 8 minutes; (ii) oven at 150°C for 8 minutes; (iii) oven at 150°C for 4 minutes; (iv) 4 minutes in gas phase at 180°C.

[0153] Incorporating Menthol Capsules into Smoking Articles Comprising Curly Cast Leaf Tobacco Rods and Filters Comprising Cellulose Acetate Tow Sections (Similar to HEETS TM ) in the prototype filter. Nine panelists tested three different samples of each prototype (containing capsules processed using different methods) in four batches. In each batch, the panelists tested three prototypes, each containing menthol capsules t...

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PUM

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Abstract

The present invention provides a capsule (120) for use in a smoking article, comprising a liquid sensation enhancing material; and a shell surrounding the liquid sensation enhancing material. The shell has an outer surface rendered hydrophobic by covalent bonding of hydrophobic groups to the outer surface of the shell. The shell can be rendered hydrophobic by reacting a hydroxyl group at the outer surface of the shell with a fatty acid halide to covalently link a fatty acid moiety to the surface of the capsule.

Description

technical field [0001] The present disclosure relates to capsules for use in smoking articles, wherein the capsules are treated to be hydrophobic; and filters, mouthpieces and smoking articles comprising the hydrophobically treated capsules. Background technique [0002] Filter cigarettes typically include a tobacco cut filler rod surrounded by a wrapper and a cylindrical filter aligned in end-to-end relationship with the wrapped tobacco rod, wherein the filter is attached to the tobacco rod by tipping paper. In conventional filter cigarettes, the filter may consist of a plug of cellulose acetate tow wrapped in a porous plug wrapper. Filtered cigarettes are also known having multi-component filters comprising two or more segments of filter material for removal of particulate and gaseous components in mainstream smoke. [0003] Various smoking articles have also been proposed in the art in which the aerosol-forming substrate, such as tobacco, is heated rather than combusted....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A24D3/06A24D3/18A24D3/17A24D1/20
CPCA24D3/061A24D3/17A24D1/20A24D3/0216A24D3/14A24F40/20A24D3/18A24F47/00A24F7/04
Inventor A·古亚德L·拉瓦南特Y·约迪尔
Owner PHILIP MORRIS PROD SA