CN113769490B - Composite hot-melt filter bag and preparation process thereof - Google Patents
Composite hot-melt filter bag and preparation process thereof Download PDFInfo
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- CN113769490B CN113769490B CN202110953058.8A CN202110953058A CN113769490B CN 113769490 B CN113769490 B CN 113769490B CN 202110953058 A CN202110953058 A CN 202110953058A CN 113769490 B CN113769490 B CN 113769490B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0001—Making filtering elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
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Abstract
The invention discloses a composite hot-melt filter bag and a preparation process thereof, and the filter bag comprises a woven material layer and a non-woven material layer compounded on the front surface of the woven material layer, wherein one end of the non-woven material layer is set as a free end, one end of the woven material layer close to the free end is provided with a hot-melt part with the length protruding out of the non-woven material layer, and a non-connecting part is arranged between the free end and the hot-melt part. According to the invention, the non-connecting part is formed by one end of the non-woven material layer and the woven material layer, and then the one end of the non-woven material layer and the hot melting part can walk towards different positions, namely the free end is compounded with the inner surface of the fixed end, and the hot melting part is compounded with the outer surface of the compounded end, so that on one hand, the free end does not generate a prevention part, and the condition of dust leakage is avoided, on the other hand, the free end does not need to be positioned on the outer surface of the compounded end, and the length of the hot melting part is not occupied, so that the increase of the occupation ratio of the hot melting part is avoided, and the condition of influencing the size of the filter bag is also avoided.
Description
Technical Field
The invention relates to the technical field of filter bags, in particular to a composite hot-melt filter bag and a preparation process thereof.
Background
At present, environment-friendly dust removal filter bags applied to coal-fired power plants and waste incineration plants are all made of terylene, tetrapolyphenylene sulfide needled felt, aramid needled felt, glass fiber woven fabric, terylene spunbonded non-woven fabric and the like. In order to avoid dust leakage caused by needle holes caused by sewing, the existing hot-pressing type filter bag adopts a hot-pressing compounding mode to replace the sewing;
the structure of a hot-melt filter bag in the prior art is shown in fig. 1, and the hot-melt filter bag comprises a filter bag body, wherein the filter bag body comprises a weaving material layer 1 and a non-weaving material layer 2 compounded on the outer surface of the weaving material layer 1 through a thermal compounding process, the length of the non-weaving material layer 2 is required to be smaller than that of the weaving material layer 1, the left side of the non-weaving material layer 2 is flush compounded with the left side of the weaving material layer 1, so that a hot-melt area 3 with the width of 10mm to 20mm is formed on the right side of the weaving material layer 1, and the inner surface of the right side of the weaving material layer 1 is connected with the hot-melt area 3 through a hot-melt mode, so that the filter bag body without a needle seam is manufactured;
when the stretched raw material with the structure is formed into a cylindrical filter bag, the following two conditions exist:
(1) as shown in fig. 2 and 3, the hot-melt area 3 is hot-melt compounded with the outer surface of the compound end 11, and at this time, the free end 22 is in contact with the end surface of the compound end 11, but the free end and the compound end are not connected, which may cause the break between the end surface of the free end 22 and the fixed end 21 or the compound end, thereby causing the condition of dust leakage;
(2) as shown in fig. 4 and 5, the outer surfaces of the hot-melting area 3 and the composite end 11 are arranged, and the free end 22 is also arranged on the outer surface of the composite end 11, so that the problem of ash leakage caused by the end surface damage of the free end 22 is solved, but the length ratio of the composite end 11 on the length woven material layer 1 needs to be increased, only the composite end 11 of the composite end 11 can adapt to the total length of the free end 22 and the hot-melting area 3, but once the length ratio of the composite end 11 on the length woven material layer 1 is increased, the diameter of the whole cloth bag is reduced, and the size of the cloth bag is affected;
in view of the above, a filter bag with a free end 22 that does not create dust break-through and that does not affect the size is desired to solve this problem.
Disclosure of Invention
The invention aims to provide a composite hot-melt filter bag and a preparation process thereof, and aims to solve the problems that the free end is broken and prevented and the size of the filter bag is influenced in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme: the composite hot-melt filter bag comprises a woven material layer and a non-woven material layer compounded on the front surface of the woven material layer, wherein one end of the non-woven material layer is a free end, one end, close to the free end, of the woven material layer is provided with a hot-melt area with the length protruding out of the non-woven material layer, and a non-connecting part is arranged between the free end and the hot-melt area.
Preferably, a heat-fusible portion is provided between the woven material layer and the nonwoven material layer.
Preferably, the end of the woven material layer away from the hot melting region is set to be a composite end, the end of the non-woven material layer away from the free end is set to be a fixed end, and the composite end is flush with the fixed end.
Preferably, one side of the hot melting area, which is close to the free end, is compounded with the outer surface of the compound end, and one side of the free end, which is close to the hot melting area, is compounded with the inner surface of the fixed end.
Preferably, the composite end and the fixed end can be inserted into the non-connecting part.
Preferably, the preparation process of the composite hot-melt filter bag comprises the following steps:
s1: preparation of raw materials: preparing a woven material layer and a non-woven material layer;
s2: cutting and forming the weaving material layer of the filter bag;
s3: carrying out hot melting on the woven material layer and the non-woven material layer, wherein a non-connecting part is required to be formed on the woven material layer and the non-woven material layer when the woven material layer and the non-woven material layer are subjected to hot melting; one side of the free end, which is close to the hot melting area, is compounded with the inner surface of the fixed end, namely the hot melting area runs to the outer surface of the compounded end, and the free end runs to the inner surface of the fixed end; the composite end and the fixed end can be inserted into the non-connecting part to fill the non-connecting part and further seal
Compared with the prior art, the invention has the beneficial effects that: form non-connecting portion with the one end (free end) of non-woven materials layer and woven materials layer, and then the one end of non-woven materials layer and the regional two of hot melt can be like walking towards different positions, the internal surface complex of free end and stiff end promptly, the outer surface complex of hot melt region and complex end, on the one hand the free end does not produce the position of breaing with defence like this, the condition of leaking the ash has been avoided, on the other hand the free end needn't be located the surface of complex end, just can not occupy the regional length of hot melt yet, and then avoided increasing the occupation ratio in hot melt region, just also avoided influencing the condition of filter bag size.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is an extended top view of a prior art filter bag;
FIG. 2 is a prior art assembly view of a first type;
FIG. 3 is an enlarged view of area A in FIG. 2;
FIG. 4 is a diagram of a second type of prior art assembly;
FIG. 5 is an enlarged view of area B of FIG. 4;
FIG. 6 is an extended top view of the present invention;
FIG. 7 is an assembled view of the present invention;
fig. 8 is an enlarged view of region C of fig. 7.
In the figure: 1. a woven material layer; 11. a composite end; 2. a layer of non-woven material; 21. a fixed end; 22. a free end; 3. a hot melt region; 4. a non-connecting part; 5. and a heat-melting part.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 6, in the embodiment of the present invention, a composite hot-melt filter bag includes a woven material layer 1 and a non-woven material layer 2 compounded on a front surface of the woven material layer 1, the non-woven material layer 2 is a PRFE microporous film, and the woven material layer 1 is polyester;
with continued reference to fig. 6, in order to make the combination of the woven material layer 1 and the non-woven material layer 2 convenient, fast and tight, a hot-melt portion 5 is provided between the woven material layer 1 and the non-woven material layer 2, i.e. the two are hot-melt combined;
with reference to fig. 6 and 7, in order to form the non-connecting part 4, so that one end of the non-woven material layer 2 and the woven material layer 1 can be separated and combined, one end of the non-woven material layer 2 is set as a free end 22, one end of the woven material layer 1 close to the free end 22 is provided with a hot melting region 3 with a length protruding out of the non-woven material layer 2, and the non-connecting part 4 is arranged between the free end 22 and the hot melting region 3, namely in the state shown in fig. 7 that the extending state shown in fig. 6 is formed into a cylindrical shape, the free end 22 separated by the non-connecting part 4 and the hot melting region 3 can be separated and respectively hot melted on the outer surface and the inner surface of the formed cylinder;
with reference to fig. 6, 7 and 8, in particular, in this embodiment, one end of the woven material layer 1 away from the hot-melt area 3 is set as a composite end 11, one end of the non-woven material layer 2 away from the free end 22 is set as a fixed end 21, the composite end 11 is flush with the fixed end 21, and the composite end 11 is flush with the fixed end 21, so that when a cylindrical filter bag is formed, raw materials can be saved while the filtering performance of the device is ensured;
with reference to fig. 6, 7 and 8, when the cylinder is formed, one side of the hot-melting region 3 close to the free end 22 needs to be compounded with the outer surface of the compound end 11, one side of the free end 22 close to the hot-melting region 3 is compounded with the inner surface of the fixed end 21, that is, the hot-melting region 3 travels to the outer surface of the compound end 11, and the free end 22 travels to the inner surface of the fixed end 21, at this time, on the one hand, the free end 22 and the fixed end 21 do not generate a defense part, thereby avoiding the ash leakage situation, on the other hand, the free end 22 does not need to be located on the outer surface of the compound end 11, and the length of the hot-melting region 3 is not occupied, further, the occupation ratio of the hot-melting region 3 is avoided being increased, and the condition of affecting the size of the filter bag is also avoided.
In the above case, the composite end 11 and the fixed end 21 can be inserted into the non-connecting portion 4 to fill the non-connecting portion 4, so as to further seal and avoid dust leakage.
A preparation process of a composite hot-melt filter bag comprises the following steps:
s1: preparation of raw materials: preparing a woven material layer and a non-woven material layer;
s2: cutting and forming the weaving material layer of the filter bag;
s3: carrying out hot melting on the woven material layer and the non-woven material layer, wherein a non-connecting part is required to be formed on the woven material layer and the non-woven material layer when the woven material layer and the non-woven material layer are subjected to hot melting; one side of the free end 22 close to the hot melting area 3 is compounded with the inner surface of the fixed end 21, namely the hot melting area 3 runs to the outer surface of the compound end 11, and the free end 22 runs to the inner surface of the fixed end 21; the composite end 11 and the fixed end 21 can be inserted into the non-connection portion 4 to fill the non-connection portion 4 for further sealing.
The working principle and the using process of the invention are as follows: in the state shown in fig. 6, when the cylindrical filter bag shown in fig. 7 is formed, one side of the free end 22 close to the hot melting area 3 is compounded with the inner surface of the fixed end 21, that is, the hot melting area 3 travels to the outer surface of the compound end 11, and the free end 22 travels to the inner surface of the fixed end 21, at this time, on the one hand, the free end 22 and the fixed end 21 do not generate a protection part, thereby avoiding the ash leakage, on the other hand, the free end 22 does not need to be located on the outer surface of the compound end 11, and the length of the hot melting area 3 can not be occupied, thereby avoiding the increase of the occupation ratio of the hot melting area 3, and further avoiding the influence on the size of the filter bag, the compound end 11 and the fixed end 21 can be inserted into the inside of the non-connecting part 4, so as to play a role of filling the non-connecting part 4, further sealing, and avoiding the ash leakage.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (1)
1. A preparation process of a composite hot-melt filter bag is characterized by comprising the following steps: the composite hot-melt filter bag is a cylindrical filter bag and comprises a weaving material layer (1) and a non-weaving material layer (2) compounded on the front surface of the weaving material layer (1), one end of the non-weaving material layer (2) is set to be a free end (22), one end, close to the free end (22), of the weaving material layer (1) is provided with a hot-melt area (3) with the length protruding out of the non-weaving material layer (2), and a non-connecting part (4) is arranged between the free end (22) and the hot-melt area (3); a hot melting part (5) is arranged between the weaving material layer (1) and the non-weaving material layer (2); one end, far away from the hot melting area (3), of the woven material layer (1) is set to be a composite end (11), one end, far away from the free end (22), of the non-woven material layer (2) is set to be a fixed end (21), and the composite end (11) is flush with the fixed end (21); one side of the hot melting region (3) close to the free end (22) is compounded with the outer surface of the compound end (11), and one side of the free end (22) close to the hot melting region (3) is compounded with the inner surface of the fixed end (21); the composite end (11) and the fixed end (21) can be inserted into the non-connecting part (4);
the method comprises the following steps:
s1: preparation of raw materials: preparing a woven material layer (1) and a non-woven material layer (2);
s2: cutting and forming the weaving material layer (1) of the filter bag;
s3: the weaving material layer (1) and the non-weaving material layer (2) are subjected to hot melting, and a non-connecting part (4) is required to be formed on the weaving material layer (1) and the non-weaving material layer (2) when the hot melting is required; one side of the free end (22) close to the hot melting area (3) is compounded with the inner surface of the fixed end (21), namely the hot melting area (3) runs to the outer surface of the compounded end (11), and the free end (22) runs to the inner surface of the fixed end (21); the composite end (11) and the fixed end (21) can be inserted into the non-connection part (4) to play a role of filling the non-connection part (4) for further sealing;
wherein the free end (22) separated by the non-connecting part (4) and the hot melting area (3) can be separated and respectively hot melted on the outer surface and the inner surface of the formed cylinder.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110953058.8A CN113769490B (en) | 2021-08-19 | 2021-08-19 | Composite hot-melt filter bag and preparation process thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110953058.8A CN113769490B (en) | 2021-08-19 | 2021-08-19 | Composite hot-melt filter bag and preparation process thereof |
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| CN113769490A CN113769490A (en) | 2021-12-10 |
| CN113769490B true CN113769490B (en) | 2022-12-30 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104107595A (en) * | 2014-06-27 | 2014-10-22 | 江苏新科达滤袋有限公司 | Filter bag specialized for kiln tail in cement industry, and preparation method for filter bag material |
| CN105728261A (en) * | 2007-04-06 | 2016-07-06 | 伊利诺斯工具制品有限公司 | Dual pattern shim assembly for use in conjunction with hot melt adhesive dispensing systems |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2122676U (en) * | 1991-10-11 | 1992-11-25 | 胡日中 | Candle-like ceramic millipore filter |
| DE10051186B4 (en) * | 2000-10-16 | 2005-04-07 | Fibermark Gessner Gmbh & Co. Ohg | Dust filter bag with highly porous carrier material layer |
| US20100186595A1 (en) * | 2009-01-23 | 2010-07-29 | Kang Na Hsiung Enterprise Co., Ltd. | Composite filter and gas filter assembly including the same |
| CN105642034B (en) * | 2016-03-17 | 2017-12-05 | 南京际华三五二一环保科技有限公司 | The preparation method and aramid fiber filter bag of aramid fiber filter bag |
| CN107930280A (en) * | 2018-01-03 | 2018-04-20 | 江苏金由新材料有限公司 | PTFE overlay films needleless seam filter bag prepared by a kind of hot melt |
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2021
- 2021-08-19 CN CN202110953058.8A patent/CN113769490B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105728261A (en) * | 2007-04-06 | 2016-07-06 | 伊利诺斯工具制品有限公司 | Dual pattern shim assembly for use in conjunction with hot melt adhesive dispensing systems |
| CN104107595A (en) * | 2014-06-27 | 2014-10-22 | 江苏新科达滤袋有限公司 | Filter bag specialized for kiln tail in cement industry, and preparation method for filter bag material |
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