CN112251844A - Degradable tow with Y-shaped sheath-core structure for cigarette filter tip and preparation method thereof - Google Patents
Degradable tow with Y-shaped sheath-core structure for cigarette filter tip and preparation method thereof Download PDFInfo
- Publication number
- CN112251844A CN112251844A CN202011170963.8A CN202011170963A CN112251844A CN 112251844 A CN112251844 A CN 112251844A CN 202011170963 A CN202011170963 A CN 202011170963A CN 112251844 A CN112251844 A CN 112251844A
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- Prior art keywords
- degradable
- core structure
- sheath
- core
- tow
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Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/14—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyester as constituent
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/02—Manufacture of tobacco smoke filters
- A24D3/0204—Preliminary operations before the filter rod forming process, e.g. crimping, blooming
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/06—Use of materials for tobacco smoke filters
- A24D3/08—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent
- A24D3/10—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent of cellulose or cellulose derivatives
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/253—Formation of filaments, threads, or the like with a non-circular cross section; Spinnerette packs therefor
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
- D01D5/30—Conjugate filaments; Spinnerette packs therefor
- D01D5/34—Core-skin structure; Spinnerette packs therefor
Abstract
The invention provides a degradable tow with a Y-shaped skin-core structure for a cigarette filter, wherein a single fiber in the degradable tow has the Y-shaped skin-core structure, the Y-shaped skin-core structure comprises a skin layer and a core layer, and the section of the single fiber is Y-shaped; the resin material of the degradable tows is PLA, PBAT, PBS and PBSA. The degradable tow with the Y-shaped sheath-core structure for the cigarette filter adopts degradable resin, and the prepared tow of the cigarette filter is degradable and environment-friendly; meanwhile, the sheath-core structure can integrate the excellent performances of the two degradable resins, the melting temperature of the degradable resins is low, thermal bonding can be carried out, the traditional chemical bonding method is replaced, and the environmental protection performance is further improved.
Description
Technical Field
The invention belongs to the technical field of cigarette filter tip materials and preparation thereof, and particularly relates to a degradable tow with a Y-shaped sheath-core structure for a cigarette filter tip and a preparation method of the degradable tow with the Y-shaped sheath-core structure for the cigarette filter tip.
Background
Cigarette filters are the most abundant type of plastic waste in the ocean today, and most of the cigarette filters today are made of cellulose acetate, a plastic that takes ten years or more to decompose. Therefore, the environment pollution caused by the cigarette filter tip for a long time can be effectively solved by adopting the degradable material to spin into the silk bundle to prepare the cigarette filter tip. Meanwhile, the existing cigarette filter tip material is not good in thermal stability and caking property, chemical reagents are usually adopted for chemical caking, and the problem of certain environmental pollution is also caused by the use of the chemical reagents.
Based on this, there is a need for a degradable tow for a cigarette filter.
Disclosure of Invention
The first purpose of the invention is to provide a degradable tow with a Y-shaped sheath-core structure for a cigarette filter.
The second purpose of the invention is to provide a preparation method of the degradable tow with the Y-shaped sheath-core structure for the cigarette filter.
The first purpose of the invention is realized by the following technical scheme:
a degradable tow with a Y-shaped sheath-core structure for a cigarette filter, wherein single fibers in the degradable tow have the Y-shaped sheath-core structure, the Y-shaped sheath-core structure comprises a sheath layer and a core layer, and the cross section of each single fiber is Y-shaped; the resin material of the degradable tows is PLA (polylactic acid), PBAT (poly (butylene adipate-terephthalate)), PBS (poly (butylene succinate), PBSA (poly (butylene succinate-adipate)).
In the invention, the PBAT has the following structural formula:
wherein n and m are positive integers greater than 100.
In the present invention, the PBS has the following structural formula:
wherein m is a positive integer greater than 100.
In the invention, the PBSA has the following structural formula:
wherein n and m are positive integers greater than 100.
In the invention, the core layer is PLA, and the skin layer is one or more of PBAT, PBS and PBSA. When PBAT is taken as the skin layer, the core layer needs to be made of a material with higher temperature resistance, and the polyester which can meet the requirement that PBAT is taken as the skin layer to be thermally bonded in the prior degradable material is only PLA.
Further, the crystallization temperature of the core layer PLA resin is 140-200 ℃.
Further, the skin layer is a plurality of PBAT, PBS and PBSA resins, and the mass fraction of each component is not less than 10 percent, and is not more than 90 percent.
In the Y-shaped skin-core structure, the core layer structure is Y-shaped, and the skin layer structure is connected to three corners of the core layer structure, so that the skin layer and the core layer are combined together to form a Y shape.
Further, the weight ratio of the filaments of the skin layer to the filaments of the core layer is 1: 0.5-1.
The second purpose of the invention is realized by the following technical scheme:
a method for preparing degradable tows with Y-shaped sheath-core structures for cigarette filters comprises the following steps:
s1) respectively drying the skin layer material and the core layer material;
s2) respectively feeding the dried skin layer material and core layer material into two sets of spinning systems for spinning and filtering;
s3), filtering, and conveying the mixture into a composite spinning component through a pump; and spinning to form the composite fiber with the Y-shaped sheath-core structure.
Further, the drying process of S1 is: drying the skin layer resin and the core layer resin in a drying environment at 80-100 ℃ for more than 12 h.
Further, in the spinning system of S2, the temperature of the screw zone for spinning the skin layer is 150-150 ℃, the temperature of the filter is 150-160 ℃, the temperature of the screw zone for spinning the core layer is 150-230 ℃, and the temperature of the filter is 160-220 ℃.
Furthermore, a spinneret plate with Y-shaped holes is used during spinning, the spinneret plate is circular, and the diameter of the spinneret plate is
The spinneret plate is one of 400-2500 holes.
Furthermore, the bonding process of preparing the cigarette filter by the composite fiber with the Y-shaped sheath-core structure adopts a thermal bonding mode, and the filament bundle is bonded at the temperature of 110-130 ℃ for 1-5 seconds.
Compared with the prior art, the invention has the following beneficial effects:
(1) the degradable tow with the Y-shaped sheath-core structure for the cigarette filter adopts degradable resin, and the prepared tow of the cigarette filter is degradable and environment-friendly; meanwhile, the sheath-core structure can integrate the excellent performances of the two degradable resins, the melting temperature of the degradable resins is low, thermal bonding can be carried out, the traditional chemical bonding method is replaced, and the environmental protection performance is further improved.
(2) The degradable tow with the Y-shaped sheath-core structure is used for the cigarette filter, the core layer is made of polylactic acid material with high crystallinity to solve the problem of thermal shrinkage, and the sheath-core structure is made of thermoplastic degradable polyester material and has better thermal stability and thermal bonding property.
(3) The Y-shaped sheath-core structure tow for the cigarette filter material has a simple preparation process and is easy to operate.
Drawings
FIG. 1 is a degradable tow of the present invention having a Y-shaped sheath-core construction for use in cigarette filters;
the reference numbers in the figures are as follows: 1-skin layer structure and 2-core layer structure.
Detailed Description
The present invention is further described below in conjunction with specific examples to better understand and implement the technical solutions of the present invention for those skilled in the art.
Example 1
A method for preparing degradable tows with Y-shaped sheath-core structures for cigarette filters comprises the following steps:
and (2) putting PLA resin with the crystallization temperature of 160 ℃ as core layer resin into an oven with the temperature of 80 ℃ for drying for 12h, putting PBS resin as skin layer resin into an oven with the temperature of 80 ℃ for drying for 12h, wherein the weight ratio of the skin layer to the core layer is 1: 0.8. Then adding the materials into different double-screw extruders respectively. The temperature of the double screws of the core layer is set to be 160-180-190-180-170 ℃, and the filtering temperature is 175 ℃. The double screw rod with the skin layer has the temperature of 120-130-150-140-130 deg.c and the filtering temperature of 155 deg.c. The diameter of the spinneret plate is 300mm, the spinneret holes are Y-shaped, and the number of the spinneret holes is 2000. And then drawing, curling and drying to obtain the tows shown in figure 1. And thermally bonding the obtained tows at 120 ℃ for 3 seconds, and then forming the tows through a forming process by a filter stick forming machine to obtain the cigarette filter stick.
Example 2
A method for preparing degradable tows with Y-shaped sheath-core structures for cigarette filters comprises the following steps:
and (2) putting PLA resin with the crystallization temperature of 200 ℃ as core layer resin into an oven at 80 ℃ for drying for 12h, and PBSA resin as skin layer resin into an oven at 80 ℃ for drying for 12h, wherein the weight ratio of the skin layer to the core layer is 1: 0.5. Then adding the materials into different double-screw extruders respectively. The temperature of the core layer twin-screw is set to be 210-220-230-220-210 ℃, and the filtering temperature is 220 ℃. The double screw rod with the skin layer has the temperature of 120-130-150-140-130 deg.c and the filtering temperature of 160 deg.c. The diameter of the spinneret plate is 250mm, the spinneret holes are Y-shaped, and the number of the spinneret holes is 1500. And then drawing, curling and drying to obtain the tows shown in figure 1. And thermally bonding the obtained tows at 110 ℃ for 5 seconds, and then forming the tows through a forming process by a filter stick forming machine to obtain the cigarette filter stick.
Example 3
A method for preparing degradable tows with Y-shaped sheath-core structures for cigarette filters comprises the following steps:
and (2) putting PLA resin with the crystallization temperature of 180 ℃ as core layer resin into an oven at 80 ℃ for drying for 12h, and putting PBS and PBAT resin (wherein the mass fractions of the PBS and the PBAT are both 50%) as skin layer resin into an oven at 80 ℃ for drying for 12h, wherein the weight ratio of the skin layer to the core layer is 1: 1. Then adding the materials into different double-screw extruders respectively. The temperature of the core layer twin-screw is set to 190-200-210-200-190 ℃, and the filtering temperature is 195 ℃. The double screw rod with the skin layer has the temperature of 120-130-150-140-130 deg.c and the filtering temperature of 150 deg.c. The diameter of the spinneret plate is 200mm, the spinneret holes are Y-shaped, and the number of the spinneret holes is 1000. And then drawing, curling and drying to obtain the tows shown in figure 1. And thermally bonding the obtained tows at 130 ℃ for 5 seconds, and then forming the tows through a forming process by a filter stick forming machine to obtain the cigarette filter stick.
Performance testing
The heat resistance and the adhesive property of the degradable tows prepared in examples 1 to 3 were measured, and the specific results are shown in table 1.
The shore hardness A of the adhesion performance test method adopts the standard GB/T22838.6-2009 to determine the 6 th part of the physical properties of cigarettes and filter sticks: hardness of
The shrinkage test method is as follows: the filter stick is firstly cut into 1 with the fixed length of 10mm or the tow length of 25mmL and put into a specified temperature environment for 30 min. The filter rod or tow was again tested for length L2.
Shrinkage rate of (L1-L2)/L1
TABLE 1 Heat resistance and adhesion Properties of the degradable tows prepared in the examples
| Example 1 | Example 2 | Example 3 | |
| Shore hardness | 90 | 91 | 86 |
| Shrinkage ratio of 55 deg.C | 0 | 0 | 0 |
| Shrinkage ratio at 60 DEG C | 0 | 0 | 0 |
| Shrinkage ratio of 65 DEG C | 0 | 0 | 0 |
| Shrinkage ratio at 70 deg.C | 0.5％ | 0.5％ | 0 |
| Shrinkage ratio at 80 |
2％ | 1％ | 0.5％ |
The above embodiments illustrate various embodiments of the present invention in detail, but the embodiments of the present invention are not limited thereto, and those skilled in the art can achieve the objectives of the present invention based on the disclosure of the present invention, and any modifications and variations based on the concept of the present invention fall within the scope of the present invention, which is defined by the claims.
Claims (10)
1. A degradable tow with a Y-shaped sheath-core structure for a cigarette filter is characterized in that single fibers in the degradable tow have the Y-shaped sheath-core structure, the Y-shaped sheath-core structure comprises a sheath layer and a core layer, and the cross section of each single fiber is Y-shaped; the resin material of the degradable tows is PLA, PBAT, PBS and PBSA.
2. The degradable tow for a cigarette filter having a Y-sheath-core structure according to claim 1, wherein the PBAT has the following structural formula:
wherein n and m are positive integers greater than 100.
3. The degradable tow having a Y-sheath-core structure for cigarette filters of claim 1 wherein the PBS has the following structural formula:
wherein m is a positive integer greater than 100.
4. The degradable tow for a cigarette filter having a Y-sheath-core structure according to claim 1, wherein the PBSA has the following structural formula:
wherein n and m are positive integers greater than 100.
5. The degradable tow for a cigarette filter having a Y-shaped sheath-core structure according to any one of claims 1 to 4, wherein the core layer is PLA and the sheath layer is one or more of PBAT, PBS and PBSA.
6. The degradable tow having a Y-shaped sheath-core structure for a cigarette filter as claimed in claim 5, wherein the crystallization temperature of the core layer PLA resin is 140-200 ℃.
7. The degradable tow for cigarette filter having Y-shaped sheath-core structure according to claim 5, wherein the sheath layer is a plurality of PBAT, PBS and PBSA resins, and the mass fraction of each component is not less than 10% and not more than 90%.
8. A method for preparing degradable tows with Y-shaped sheath-core structures for cigarette filters as claimed in any one of claims 1 to 7,
s1) respectively drying the skin layer material and the core layer material;
s2) respectively feeding the dried skin layer material and core layer material into two sets of spinning systems for spinning and filtering;
s3), filtering, and conveying the mixture into a composite spinning component through a pump; and spinning to form the composite fiber with the Y-shaped sheath-core structure.
9. The method for preparing degradable tows having Y-shaped sheath-core structure for cigarette filters as claimed in claim 8, wherein the drying process of S1 is: drying the skin layer resin and the core layer resin in a drying environment at 80-100 ℃ for more than 12 h.
10. The method as claimed in claim 8, wherein the spinning system of S2 comprises a screw zone for spinning the sheath layer at a temperature of 120-150 ℃, a filter at a temperature of 150-160 ℃, a screw zone for spinning the core layer at a temperature of 150-230 ℃ and a filter at a temperature of 160-220 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011170963.8A CN112251844A (en) | 2020-10-28 | 2020-10-28 | Degradable tow with Y-shaped sheath-core structure for cigarette filter tip and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011170963.8A CN112251844A (en) | 2020-10-28 | 2020-10-28 | Degradable tow with Y-shaped sheath-core structure for cigarette filter tip and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112877809A (en) * | 2021-03-12 | 2021-06-01 | 苏州龙杰特种纤维股份有限公司 | Novel polylactic acid fiber and preparation method thereof |
| CN114277462A (en) * | 2021-12-23 | 2022-04-05 | 台州益普高分子材料有限公司 | Easily degradable coated yarn and preparation method thereof |
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| CN102191587A (en) * | 2010-03-03 | 2011-09-21 | 盐城纺织职业技术学院 | Biodegradable two-component low-melting point composite fiber |
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| CN111109651A (en) * | 2019-12-30 | 2020-05-08 | 恒天长江生物材料有限公司 | Preparation method of biodegradable composite fiber glue-free hollow filter stick |
-
2020
- 2020-10-28 CN CN202011170963.8A patent/CN112251844A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2007126780A (en) * | 2005-11-02 | 2007-05-24 | Daiwabo Co Ltd | Polylactic acid-based conjugate fiber, and non-woven fabric and cushioning material using the same |
| CN101694020A (en) * | 2009-09-17 | 2010-04-14 | 吴江鹰翔万信化纤有限公司 | Coat-core fiber of polylactic acid and polyethylene butanediol succinate |
| CN102191587A (en) * | 2010-03-03 | 2011-09-21 | 盐城纺织职业技术学院 | Biodegradable two-component low-melting point composite fiber |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112877809A (en) * | 2021-03-12 | 2021-06-01 | 苏州龙杰特种纤维股份有限公司 | Novel polylactic acid fiber and preparation method thereof |
| CN114277462A (en) * | 2021-12-23 | 2022-04-05 | 台州益普高分子材料有限公司 | Easily degradable coated yarn and preparation method thereof |
| CN114277462B (en) * | 2021-12-23 | 2023-11-21 | 台州益普高分子材料有限公司 | Easily degradable coated yarn and preparation method thereof |
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