CN115736340A - Forming process of mixed tow fiber glue-free filter stick - Google Patents
Forming process of mixed tow fiber glue-free filter stick Download PDFInfo
- Publication number
- CN115736340A CN115736340A CN202211468397.8A CN202211468397A CN115736340A CN 115736340 A CN115736340 A CN 115736340A CN 202211468397 A CN202211468397 A CN 202211468397A CN 115736340 A CN115736340 A CN 115736340A
- Authority
- CN
- China
- Prior art keywords
- tows
- mixed
- forming
- filter stick
- tow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
The invention belongs to the technical field of cigarette materials, relates to a filter tip, and particularly relates to a forming process of a mixed tow fiber glue-free filter tip, which comprises the following steps: the method comprises the steps of opening mixed tows, preheating at 60-100 ℃, drawing the mixed tows into a forming cavity, heating to 70-200 ℃ to soften the surfaces of the tows, then feeding the mixed tows into a cooling cavity to re-solidify and bond the softened surfaces of the tows together, wrapping the wrapped paper, and cutting the wrapped mixed tows into filter rods, wherein the mixed tows are any two or more than two of cellulose diacetate tows (CA) for cigarettes, polypropylene fiber tows (PP) for cigarettes, polylactic acid fiber tows (PLA), polybutylene adipate/terephthalate tows (PBAT), polyethylene terephthalate tows (PET) and polybutylene succinate tows (PBS). The invention does not need to use adhesive, can be produced by using the existing forming equipment, has simple process, does not generate miscellaneous gas in the using process, can reduce the temperature of flue gas and improve the comfort of suction.
Description
Technical Field
The invention belongs to the technical field of cigarette materials, relates to a filter tip, and particularly relates to a forming process of a mixed tow fiber glue-free filter tip.
Background
Currently, the most commonly used cigarette filter materials are acetate fiber filter rods and polypropylene fiber filter rods. The cellulose acetate filter stick is characterized in that triacetin is sprayed on the surface of cellulose acetate tows, and an internal cross-linked three-dimensional porous filtering state is formed through the chemical reaction of cellulose acetate and the triacetin, so that the purposes of filtering and adsorbing smoke are achieved. The polypropylene fiber filter stick is formed in a three-dimensional porous filtering state by spraying an aqueous adhesive on the surface of a polypropylene fiber tow and bonding the tow through the adhesive, so that the purposes of filtering and adsorbing smoke are achieved.
The mode of use that heats not burning tobacco products is totally different with traditional cigarette, and the cigarette bullet need insert in the heater, in order to guarantee that the section of releasing cigarette in the cigarette bullet is by the abundant heating, the depth of insertion of cigarette bullet is generally darker, leads to heating the filter tip part of cigarette bullet also by the heater parcel, and the in-process plasticizer or gluing agent that use also is heated, can release other smells inconsistent with mainstream smoke, makes the smoking quality greatly reduced who heats the cigarette.
In order to solve this problem, it has been proposed to produce a filter rod from a sheath-core composite fiber, to heat the tow appropriately in the molding process using the lower melting point of the sheath layer, to slightly melt the tow surface, and to bond the tow to a rod after cooling. At present, the most common composite fiber is PET/PP fiber, namely PET is a skin layer, PP is a core material, but the composite fiber has no biodegradability and is not beneficial to environmental protection. In addition, the composite fiber has high processing difficulty and high cost.
The mixed tow fiber glue-free formed filter stick disclosed by the invention does not use an adhesive, different tows are mixed and formed, and self-adhesion is generated among the tows by utilizing a thermal forming process, so that the cylindrical filter stick with certain strength is manufactured.
Disclosure of Invention
Aiming at the existing defects of a filter stick for a heating non-combustible tobacco product, the invention aims to disclose a forming process of a mixed tow fiber glue-free filter stick, which adopts a thermal forming process to prepare a low-suction group cylinder filter stick with certain strength without using a plasticizer or an adhesive.
A forming process of a mixed tow fiber glue-free filter stick comprises the following steps: the method comprises the steps of opening mixed tows, preheating at 60-100 ℃, drawing the mixed tows into a forming cavity, heating to 70-200 ℃ to soften the surfaces of the tows, then feeding the mixed tows into a cooling cavity to re-solidify and bond the softened surfaces of the tows together, wrapping the wrapped paper, and cutting the wrapped mixed tows into filter rods, wherein the mixed tows are any two or more than two of cellulose diacetate tows (CA) for cigarettes, polypropylene fiber tows (PP) for cigarettes, polylactic acid fiber tows (PLA), polybutylene adipate/terephthalate tows (PBAT), polyethylene terephthalate tows (PET) and polybutylene succinate tows (PBS).
In a preferred embodiment of the invention, the mixed tow is formed by randomly mixing cellulose diacetate tow (CA) for cigarettes, polylactic acid fiber tow (PLA) and polyethylene terephthalate tow (PET).
In a preferred embodiment of the present invention, the preheating is performed by an electric heating air pump.
In the preferred embodiment of the invention, hot air heated by heat-conducting oil is introduced into the molding cavity, the temperature of the hot air at the outlet of the air heater is 100-300 ℃, and the temperature of the molding cavity is 70-200 ℃ after the hot air enters the molding cavity.
Further preferably, the temperature of the hot air at the outlet of the heater is 150-250 ℃ and the temperature of the molding cavity is 90-180 ℃.
In the preferred embodiment of the invention, hot air is pressurized and sprayed into the forming cavity by the heat-resistant compressor, and the pressure of the hot air is 0.1-0.5 MPa, so that hot air can penetrate through the tows, and the tows are uniformly heated.
In the preferred embodiment of the invention, the cooling cavity is filled with cold dry air, the temperature of the cold dry air is less than 10 ℃, and the pressure of the cold dry air is 0.1-0.25 MPa.
In the thermal forming cavity, when the temperature reaches 40-150 ℃, the cellulose diacetate tows (CA), polylactic acid fiber tows (PLA), poly adipic acid/butylene terephthalate tows (PBAT), polyethylene terephthalate tows (PET) and polybutylene succinate tows (PBS) for cigarettes are heated to be subjected to surface hot melting or softening, and the tows are extruded and bonded in the thermal forming cavity and then enter the cooling forming cavity to be cured and formed.
Advantageous effects
The forming process of the mixed tow fiber glue-free filter stick disclosed by the invention does not need to use an adhesive, can be used for production by using the existing forming equipment, is simple in process, does not generate miscellaneous gas in the using process, and can reduce the temperature of smoke and improve the comfort of suction.
Detailed Description
The present invention will be described in detail below with reference to examples to provide those skilled in the art with a better understanding of the present invention, but the present invention is not limited to the following examples.
Example 1
A forming process of a mixed tow fiber glue-free filter stick comprises the following steps: the tows are cellulose diacetate tows (CA) and polylactic acid tows (PLA) for cigarettes, the tows are opened by an opening machine set, then the tows are preheated by hot air at 100 ℃, and after entering a forming cavity, the outlet temperature of a hot air heater is controlled to be 175 ℃, the temperature in the forming cavity is controlled to be 85 ℃, the pressure of the hot air is controlled to be 0.25MPa, and the tows are heated, softened and adhered. And (3) allowing the softened and bonded tows to enter a cooling cavity, introducing dry cold air with the temperature of 5 ℃ and the pressure of 0.15MPa into the cooling cavity to promote the softened tows to be rapidly solidified, wrapping a layer of forming paper after the cylindrical filter rod is prepared, and slitting to obtain the filter rod.
Example 2
A forming process of a mixed tow fiber glue-free filter stick comprises the following steps: the tows are cellulose diacetate tows (CA) and polyethylene glycol terephthalate tows (PET) for cigarettes, the tows are opened by an opening machine set, then the tows are preheated by hot air at 100 ℃, after entering a forming cavity, the outlet temperature of a hot air heater is controlled to be 250 ℃, the temperature in the forming cavity is controlled to be 100 ℃, the pressure of the hot air is 0.25MPa, and the tows are heated, softened and adhered. And (3) allowing the softened and bonded tows to enter a cooling cavity, introducing dry cold air with the temperature of 5 ℃ and the pressure of 0.15MPa into the cooling cavity to promote the softened tows to be rapidly solidified, wrapping a layer of forming paper after the cylindrical filter rod is prepared, and slitting to obtain the filter rod.
Example 3
A forming process of a mixed tow fiber glue-free filter stick comprises the following steps: the tows are cellulose diacetate tows (CA) for cigarettes, polylactic acid tows (PLA) and polyethylene glycol terephthalate tows (PET), the tows are pre-heated by hot air at 80 ℃ after being opened by an opening machine set, the temperature of an outlet of a hot air heater is controlled to be 200 ℃, the temperature in a forming cavity is controlled to be 900 ℃, the pressure of the hot air is controlled to be 0.30MPa, and the tows are heated, softened and adhered. And (3) allowing the softened and bonded tows to enter a cooling cavity, introducing dry cold air with the temperature of 5 ℃ and the pressure of 0.20MPa into the cooling cavity to promote the softened tows to be rapidly solidified, wrapping a layer of forming paper after the cylindrical filter rod is prepared, and slitting to obtain the filter rod.
The embodiment is manufactured into a filter stick with consistent circumference, length and suction resistance, then a common acetate fiber filter stick with the same circumference, length and suction resistance is used as a reference, after the filter stick is connected with cigarettes, the average temperature of smoke is detected, and the detection result is shown in the following table:
| sample (I) | Average temperature of flue gas/. Degree.C | Temperature reduction/percent |
| Common acetate fiber filter stick | 57.9 | / |
| Example 1 | 52.4 | 9.50 |
| Example 2 | 53.5 | 7.60 |
| Example 3 | 52.0 | 10.19 |
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present invention or directly or indirectly applied to other related technical fields are included in the scope of the present invention.
Claims (7)
1. A mixed tow fiber glue-free filter stick forming process is characterized in that: the method comprises the steps of opening mixed tows, preheating at 60-100 ℃, drawing the mixed tows into a forming cavity, heating to 70-200 ℃ to soften the surfaces of the tows, then feeding the mixed tows into a cooling cavity to re-solidify and bond the softened surfaces of the tows together, wrapping the wrapped tows with forming paper, and cutting the wrapped tows into filter rods, wherein the mixed tows are any two or more than two of cellulose diacetate tows CA for cigarettes, polypropylene fiber tows PP for cigarettes, polylactic acid fiber tows PLA, poly adipic acid/butylene terephthalate tows PBAT, polyethylene terephthalate tows PET and poly butylene succinate tows PBS.
2. The process for forming the mixed tow fiber glue-free filter stick according to claim 1, wherein the process comprises the following steps: the mixed tow is formed by randomly mixing a cellulose diacetate tow CA for cigarettes, a polylactic acid fiber tow PLA and a polyethylene glycol terephthalate tow PET.
3. The process for forming the mixed tow fiber glue-free filter stick according to claim 1, wherein the process comprises the following steps: the preheating is carried out by adopting an electric heating air pump.
4. The process for forming the mixed tow fiber glue-free filter stick according to claim 1, wherein the process comprises the following steps: hot air heated by heat conducting oil is introduced into the forming cavity, the temperature at the outlet of the air heater is 100-300 ℃, and the temperature of the forming cavity is 70-200 ℃ after the hot air enters the forming cavity.
5. The process for forming the mixed tow fiber glue-free filter stick according to claim 4, wherein the process comprises the following steps: the temperature of the hot air at the outlet of the heater is 150-250 ℃, and the temperature of the molding cavity is 90-180 ℃.
6. The process for forming the mixed tow fiber glue-free filter stick according to claim 1, wherein the process comprises the following steps: the hot air is pressurized and sprayed into the molding cavity by a heat-resistant compressor, and the pressure of the hot air is 0.1-0.5 MPa.
7. The process for forming the mixed tow fiber glue-free filter stick according to claim 1, wherein the process comprises the following steps: the cooling cavity is filled with cold dry air, the temperature of the cold dry air is less than 10 ℃, and the pressure is 0.1-0.25 MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211468397.8A CN115736340A (en) | 2022-11-22 | 2022-11-22 | Forming process of mixed tow fiber glue-free filter stick |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211468397.8A CN115736340A (en) | 2022-11-22 | 2022-11-22 | Forming process of mixed tow fiber glue-free filter stick |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115736340A true CN115736340A (en) | 2023-03-07 |
Family
ID=85335116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211468397.8A Pending CN115736340A (en) | 2022-11-22 | 2022-11-22 | Forming process of mixed tow fiber glue-free filter stick |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115736340A (en) |
-
2022
- 2022-11-22 CN CN202211468397.8A patent/CN115736340A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105768191B (en) | A kind of reconstituted tobacco and do not burnt cigarette using the heating prepared by it | |
| US3579623A (en) | Forming filled continuous plastic rod such as plastic cigarette filter rod filled with a tow of cellulose acetate | |
| CN1137225A (en) | Bicomponent fiber and tobacco filters formed therefrom | |
| MX2012012474A (en) | Filter additive. | |
| US3106501A (en) | Process for manufacturing filters | |
| JP2021513850A (en) | Aerosol generating article with aerosol cooling element | |
| CN102080276A (en) | Biodegradable cigarette fiber material and cigarette filter tip | |
| CN113773626B (en) | Environment-friendly degradable master batch and preparation method and application thereof | |
| US3079978A (en) | Apparatus for manufacturing filters | |
| US7762267B2 (en) | Filter element | |
| CN110810917A (en) | Safe and environment-friendly cooling filter tip rod and preparation method thereof | |
| US20220259582A1 (en) | RuBisCO PROTEIN FIBERS | |
| CN110406072B (en) | Starch-based multi-channel airflow unit and preparation method and application thereof | |
| CN108703412A (en) | A kind of filter stick of safety and environmental protection and preparation method thereof | |
| CN115736340A (en) | Forming process of mixed tow fiber glue-free filter stick | |
| JPS626006B2 (en) | ||
| US4357188A (en) | Method for manufacturing cigarette filters | |
| CN205611758U (en) | Utilize heating incombustible cigarette of reconstituted tobacco preparation | |
| CN109662345B (en) | Preparation method and application of mint flavor line used in novel heating non-combustible tobacco | |
| US3418187A (en) | Filter elements | |
| CN113826945A (en) | Method for manufacturing one-step forming blind hole bead blasting filter stick | |
| CN114668172B (en) | Preparation method of multi-channel aroma-enhancing composite filter stick | |
| JPH0227461B2 (en) | ||
| CN215404700U (en) | Embedded cooling and filtering double-excellent composite fiber | |
| CN114504125B (en) | Low-suction-resistance sweet cooling material for cigarette filter tips |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |