CN114411450A - Non-woven fabric and manufacturing process thereof - Google Patents
Non-woven fabric and manufacturing process thereof Download PDFInfo
- Publication number
- CN114411450A CN114411450A CN202210110872.8A CN202210110872A CN114411450A CN 114411450 A CN114411450 A CN 114411450A CN 202210110872 A CN202210110872 A CN 202210110872A CN 114411450 A CN114411450 A CN 114411450A
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- CN
- China
- Prior art keywords
- cotton rope
- nonwoven fabric
- woven fabrics
- manufacturing
- control
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- 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.)
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Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/30—Multi-ply
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
- B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by features of form at particular places, e.g. in edge regions
- B32B3/08—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts
- B32B3/085—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts spaced apart pieces on the surface of a layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
- B32B5/022—Non-woven fabric
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
- B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Nonwoven Fabrics (AREA)
Abstract
The invention relates to the field of non-woven fabrics, in particular to a non-woven fabric and a manufacturing process thereof.A cotton rope is embedded into the non-woven fabric, so that the strength of the non-woven fabric is improved, and the non-woven fabric is not easy to damage; the inner layer of the non-woven fabric is embedded with a cotton rope; the process comprises the following steps: s1: putting the fiber raw material into water to prepare fiber suspension pulp; s2: conveying the suspended slurry to a web forming mechanism to form a web of fibers in a wet state and then reinforcing the web into a single-layer non-woven fabric; s3: feeding two single-layer non-woven fabrics and a cotton rope into a pressing device simultaneously; s4: make the cotton rope be located between two individual layer non-woven fabrics that align through compression fittings to compress tightly fixedly two individual layer non-woven fabrics, obtain the non-woven fabrics that the embedded cotton rope that has.
Description
Technical Field
The invention relates to the field of non-woven fabrics, in particular to a non-woven fabric and a manufacturing process thereof.
Background
Nonwoven fabrics, also known as nonwovens, are composed of oriented or random fibers. It is called a cloth because of its appearance and certain properties. Simply, the fiber is directly bonded together by physical or chemical methods instead of interweaving and knitting the yarns one by one; the non-woven fabric has the characteristics of moisture resistance, air permeability, flexibility, lightness, thinness, flame retardance, no toxicity, no odor, low price, recycling and the like; the product can be used in different industries, such as sound insulation, heat insulation, electric heating sheet, mask, clothing, medical use, filling material, etc.
However, since the non-woven fabric is formed by directly bonding the fibers together by physical or chemical methods, the non-woven fabric has limited strength and is easily damaged, which affects the use.
Disclosure of Invention
The invention aims to provide a non-woven fabric and a manufacturing process thereof.
A process for making a nonwoven fabric comprising the steps of:
s1: putting the fiber raw material into water to prepare fiber suspension pulp;
s2: conveying the suspended slurry to a web forming mechanism to form a web of fibers in a wet state and then reinforcing the web into a single-layer non-woven fabric;
s3: feeding two single-layer non-woven fabrics and a cotton rope into a pressing device simultaneously;
s4: make the cotton rope be located between two individual layer non-woven fabrics that align through compression fittings to compress tightly fixedly two individual layer non-woven fabrics, obtain the non-woven fabrics that the embedded cotton rope that has.
Preferably, in the step S1, the fiber raw material is opened into single fibers.
Preferably, the fiber raw material is a mixture of different fibers.
Preferably, the diameter of the cotton rope is 1-3 mm.
The inner layer of the non-woven fabric is embedded with a cotton rope.
Drawings
FIG. 1 is a flow chart of a nonwoven fabric manufacturing process;
fig. 2 and 3 are schematic structural views of the laminating device;
FIG. 4 is a schematic view of a carrier;
FIG. 5 is a schematic diagram of the construction of the puck;
FIG. 6 is a schematic view of the construction of the mounting tube;
FIG. 7 is a schematic view of the construction of the inside ceiling panel;
FIG. 8 is a schematic view of control mechanism I;
FIGS. 9 and 10 are schematic views of the connection between the pressing wheel and the tension wheel;
FIG. 11 is a schematic view of the pinch roller and eccentric;
fig. 12 is a schematic view of the structure of the hold-down strip.
In the figure:
a carrier 101;
a boom 102;
a bidirectional screw 103;
a pressure roller frame 104;
a mounting plate 105;
a pinch roller 201;
an end head frame 202;
a long hole 203;
mounting the tube 301;
a triangular ring 302;
an inner ceiling 303;
a restraint post 304;
a tension spring 305;
a control seat 306;
a conical head II 307;
a control screw 308;
a tensioner 401;
a tension side plate 402;
a linkage block I403;
a linkage block II 404;
a tension spring 405;
a compression bar 501;
a stop block 502;
pressing the spring 503;
a rotating roller 504;
a control shaft 505;
an eccentric 506;
a wheel cover 507;
a worm 508.
Detailed Description
As shown in fig. 1:
a process for making a nonwoven fabric comprising the steps of:
s1: putting the fiber raw material into water to prepare fiber suspension pulp;
s2: conveying the suspended slurry to a web forming mechanism to form a web of fibers in a wet state and then reinforcing the web into a single-layer non-woven fabric;
s3: feeding two single-layer non-woven fabrics and a cotton rope into a pressing device simultaneously;
s4: make the cotton rope be located between two individual layer non-woven fabrics that align through compression fittings to compress tightly fixedly two individual layer non-woven fabrics, obtain the non-woven fabrics that the embedded cotton rope that has.
Preferably, in the step S1, the fiber raw material is opened into single fibers.
Preferably, the fiber raw material is a mixture of different fibers.
Preferably, the diameter of the cotton rope is 1-3 mm.
The strength of the non-woven fabric is improved through the cotton rope of the cotton rope.
As shown in fig. 2-12:
the pressing device comprises a bearing frame 101, a support arm frame 102, two pressure wheel frames 104, two pressure wheels 201 and an end head frame 202, wherein the support arm frame 102 is fixedly connected to the middle of the bearing frame 101, the two pressure wheel frames 104 are respectively connected to two ends of the bearing frame 101, the number of the pressure wheels 201 is two, the end head frame 202 is fixed to two ends of each pressure wheel 201, the two pressure wheels 201 are rotatably connected with the two pressure wheel frames 104 through the end head frame 202, and the support arm frame 102 is connected with an installation mechanism for installing a cotton rope roll.
When the cotton rope pressing device is used, two single-layer non-woven fabrics are respectively guided into the space between the two pressing wheels 201 from two sides and are aligned, a cotton rope roll is arranged on the installation mechanism, the free end of the cotton rope is arranged between the two single-layer non-woven fabrics, a motor arranged on the pressing wheel frame 104 is started to drive the end head frame 202, so that the two pressing wheels 201 are driven to rotate oppositely, the two single-layer non-woven fabrics are clamped and fixed, and the cotton rope is pressed between the two single-layer non-woven fabrics to obtain the non-woven fabrics embedded with the cotton rope;
through the continuous supply of two individual layer non-woven fabrics and cotton rope, can be in succession to the non-woven fabrics that has embedded the cotton rope prepare, moreover according to the intensity of needs non-woven fabrics, can compress tightly fixedly in the same direction as between two individual layer non-woven fabrics with a plurality of cotton ropes simultaneously.
As shown in fig. 2-12:
the pressing device further comprises a bidirectional screw 103, the bearing frame 101 is provided with the bidirectional screw 103 in a rotating mode, and two ends of the bidirectional screw 103 are respectively in threaded connection with the two pressing wheel frames 104.
By rotating the bidirectional screw 103, the two pressing wheel frames 104 can be driven to be close to or far away from each other at the same time by threads, so that the distance between the two pressing wheels 201 can be adjusted, the extrusion force between the two pressing wheels 201 can be adjusted, and the device can adapt to single-side non-woven fabrics with different thicknesses and cotton ropes with different diameters.
As shown in fig. 2-12:
the mounting mechanism comprises a mounting pipe 301, the mounting pipe 301 is arranged on the support arm frame 102 in a rotating mode, and the conical head I is fixed to the other end of the mounting pipe 301.
Due to the arrangement of the installation pipe 301, the cotton rope is conveniently wound and sleeved on the installation pipe 301, and the installation of the cotton rope is realized;
the cotton rope roll is further conveniently sleeved on the installation pipe 301 through the arrangement of the conical head I;
the cotton rope can be conveniently dropped off from the cotton rope roll through the rotary connection of the mounting pipe 301 and the support arm frame 102, and the continuous processing is carried out.
As shown in fig. 2-12:
the installation mechanism further comprises a triangular ring 302, an inner top plate 303, limiting columns 304, tension springs 305 and a control mechanism I, the triangular ring 302 is fixed to the installation pipe 301 close to the end of the supporting arm frame 102, the three inner top plates 303 penetrate through and slide in the installation pipe 301, the three limiting columns 304 are fixed to the three inner top plates 303 respectively, the triangular ring 302 is connected with the three limiting columns 304 in a sliding mode, the tension springs 305 are arranged between each limiting column 304 and the triangular ring 302, and the supporting arm frame 102 is connected with the control mechanism I for controlling the inner top plate 303 to slide in a stretching mode.
After the cotton rope roll is sleeved on the installation pipe 301, the three inner top plates 303 are controlled by the control mechanism I to move outwards at the same time, so that the three inner top plates 303 slide out of the installation pipe 301, the inner side of the cotton rope roll is tightly supported and fixed, and the cotton rope roll is prevented from axially sliding on the installation pipe 301 to influence the position of the cotton rope and further influence the quality of non-woven fabrics;
when the cotton rope roll needs to be detached, the control mechanism I is separated from the triangular ring 302, so that the inner top plate 303 is simultaneously pulled into the mounting pipe 301 through the pulling force of the tension spring 305, and then the cotton rope roll is detached from the mounting pipe 301 conveniently.
Further, the method comprises the following steps of;
and a rack is arranged on the outer side of the inner top plate 303.
Through the setting of rack, further strengthen the fixed to cotton rope book.
As shown in fig. 2-12:
the control mechanism I comprises a control seat 306, a conical head II 307 and a control screw rod 308, the control seat 306 slides on the support arm frame 102, the control screw rod 308 rotates on the control seat 306, the control screw rod 308 is in threaded connection with the support arm frame 102, the conical head II 307 is fixed on the control seat 306, and the conical head II 307 is coaxial with the mounting pipe 301.
The control screw 308 is rotated and is in threaded connection with the support arm frame 102 through the control screw 308, so that the control screw 308 drives the control seat 306 to move on the support arm frame 102 and then drives the conical head II 307 to move, when the conical head II 307 moves towards the direction of the installation pipe 301, the conical head II 307 simultaneously pushes the three limiting columns 304, the three inner top plates 303 move outwards, and tight jacking installation of the cotton rope roll is realized; when the conical head II 307 moves in the direction away from the mounting pipe 301, the conical head II 307 is separated from the three limiting columns 304 at the same time, so that the three inner top plates 303 move inwards through the pulling force of the tension springs 305, the separation of the inner top plates 303 and the cotton rope roll is realized, and then the disassembly is completed.
As shown in fig. 2-12:
the pressing device further comprises a tension wheel 401, tension side plates 402, linkage blocks I403, linkage blocks II 404 and tension springs 405, the tension side plates 402 are respectively arranged at two ends of the tension wheel 401 in a rotating mode, the two tension side plates 402 are respectively arranged on the two end head frames 202 in a rotating mode, the linkage blocks I403 are arranged on one tension side plate 402 in a rotating mode, the linkage blocks II 404 are arranged on the pressure wheel frame 104 in a rotating mode, and the tension springs 405 are arranged between the linkage blocks I403 and the linkage blocks II 404.
Through tensioning spring 405's elasticity, make take-up pulley 401 use pinch roller 201 axle to rotate as the axle, then when sending single-layer non-woven fabrics to the device in, make single-layer non-woven fabrics pass through between pinch roller 201 and the take-up pulley 401 leading-in to carry out the tensioning through take-up pulley 401 to the single-layer non-woven fabrics of feeding, the effectual single-layer non-woven fabrics of avoiding is rolled up, and unable tiling, the influence is fixed to the tight clamp of embedding clamp of cotton rope.
As shown in fig. 2-12:
the pressing device further comprises a long hole 203, a pressing strip 501, a limiting frame 502, a pressing spring 503, a rotating roller 504 and a control mechanism II, the pressing roller 201 is evenly provided with the long holes 203 in a penetrating mode in the circumferential direction, the pressing strip 501 slides in each long hole 203, the limiting frame 502 is fixed on the inner side of each pressing strip 501, the pressing spring 503 is arranged between the limiting frame 502 and the pressing roller 201, the rotating roller 504 is arranged in the middle of the limiting frame 502, and the control mechanism II is arranged in the center of the pressing roller 201 and connected with the end head frame 202.
The control mechanism II comprises mounting plates 105, control shafts 505, eccentric wheels 506, wheel sleeves 507 and worms 508, wherein each pressure wheel frame 104 is fixedly provided with the mounting plate 105, the two mounting plates 105 are respectively provided with the worms 508 in a rotating mode, the control shafts 505 rotate on the end head frames 202 and are coaxial with the pressure wheels 201, the eccentric wheels 506 are fixedly arranged on the control shafts 505, the wheel sleeves 507 are arranged on the eccentric wheels 506 in a rotating mode, and the wheel sleeves 507 are connected with the rotating rollers 504 in a rolling mode.
When the two pressing wheels 201 rotate oppositely to extrude the non-woven fabric, the pressing wheels 201 drive the pressing strips 501 to rotate through the long holes 203, when the pressing strips 501 move to the contact positions of the two pressing wheels 201, the rotating rollers 504 corresponding to the pressing strips 501 are in contact with the eccentric wheel 506, so that the pressing strips 501 slide out of the long holes 203 to further extrude the non-woven fabric, and the clamping and fixing of the two single-layer non-woven fabrics are guaranteed;
by sliding out the pressing bar 501 of the long hole 203,
the control shaft 505 is driven by rotating the worm 508, the control shaft 505 drives the eccentric wheel 506 to rotate, then the position of the eccentric wheel 506 is adjusted, the position of the eccentric wheel 506 far away from the end of the control shaft 505 is adjusted by the contact degree of the rotating rollers 504 at the contact part of the two pressing wheels 201, the extending length of the pressing strip 501 is adjusted, the pressing force is adjusted, and meanwhile the device is suitable for non-woven fabrics with different thicknesses and cotton ropes with different diameters.
The inner layer of the non-woven fabric is embedded with a cotton rope.
Through the setting of cotton rope, improve the intensity of non-woven fabrics.
Claims (10)
1. A non-woven fabric manufacturing process is characterized in that: the method comprises the following steps:
s1: putting the fiber raw material into water to prepare fiber suspension pulp;
s2: conveying the suspended slurry to a web forming mechanism to form a web of fibers in a wet state and then reinforcing the web into a single-layer non-woven fabric;
s3: feeding two single-layer non-woven fabrics and a cotton rope into a pressing device simultaneously;
s4: make the cotton rope be located between two individual layer non-woven fabrics that align through compression fittings to compress tightly fixedly two individual layer non-woven fabrics, obtain the non-woven fabrics that the embedded cotton rope that has.
2. The process for manufacturing a nonwoven fabric according to claim 1, wherein: in S1, the fiber raw material is opened into single fibers.
3. The process for manufacturing a nonwoven fabric according to claim 1, wherein: the fiber raw material is a mixture of different fibers.
4. The process for manufacturing a nonwoven fabric according to claim 1, wherein: the diameter of the cotton rope is 1-3 mm.
5. The process for manufacturing a nonwoven fabric according to any of claims 1 to 4, characterized in that: the pressing device comprises a bearing frame (101), a support arm frame (102), a pressure wheel frame (104), pressure wheels (201) and end frames (202), wherein the middle of the bearing frame (101) is connected with the support arm frame (102), the two ends of the bearing frame (101) are connected with the pressure wheel frame (104), the end frames (202) are fixed at the two ends of the pressure wheels (201), the two pressure wheels (201) rotate on the two pressure wheel frames (104) through the end frames (202), and the support arm frame (102) is connected with an installation mechanism for installing cotton rope rolls.
6. The process for manufacturing a nonwoven fabric according to claim 5, wherein: the pressing device further comprises a bidirectional screw (103), and the bidirectional screw (103) rotates on the bearing frame (101) and is in threaded connection with the two pressing wheel frames (104).
7. The process for manufacturing a nonwoven fabric according to claim 5, wherein: installation mechanism is including installation pipe (301), the one end of installation pipe (301) is rotated on support arm frame (102), and the other end of installation pipe (301) is equipped with conical head I.
8. The process for manufacturing a nonwoven fabric according to claim 7, wherein: installation mechanism still includes triangle ring (302), interior roof (303), spacing post (304), extension spring (305) and control mechanism I, triangle ring (302) are fixed on installation pipe (301) of a cantilever crane (102) end, it has three interior roof (303) to run through to slide on installation pipe (301), all be fixed with spacing post (304) on three interior roof (303), three spacing post (304) all with triangle ring (302) sliding connection, be equipped with extension spring (305) between spacing post (304) and triangle ring (302), be connected with gliding control mechanism I of roof (303) in the control on the cantilever crane (102).
9. The process for manufacturing a nonwoven fabric according to claim 8, wherein: the control mechanism I comprises a control seat (306), a conical head II (307) and a control screw rod (308), the control seat (306) slides on the support arm frame (102), the control screw rod (308) rotates on the control seat (306), the control screw rod (308) is in threaded connection with the support arm frame (102), and the conical head II (307) is fixed on the control seat (306) and is coaxial with the mounting pipe (301).
10. The nonwoven fabric produced by the nonwoven fabric production process according to claim 1, wherein: the inner layer of the non-woven fabric is embedded with a cotton rope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210110872.8A CN114411450A (en) | 2022-01-29 | 2022-01-29 | Non-woven fabric and manufacturing process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210110872.8A CN114411450A (en) | 2022-01-29 | 2022-01-29 | Non-woven fabric and manufacturing process thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114411450A true CN114411450A (en) | 2022-04-29 |
Family
ID=81278690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210110872.8A Pending CN114411450A (en) | 2022-01-29 | 2022-01-29 | Non-woven fabric and manufacturing process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114411450A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2188601Y (en) * | 1994-04-01 | 1995-02-01 | 宋大兴 | Reinforced cement bag paper |
| CN2249257Y (en) * | 1995-07-31 | 1997-03-12 | 路全恩 | Double-corrugated ribbed composite paper |
| CN1334222A (en) * | 2000-07-14 | 2002-02-06 | 清华大学 | Method and apparatus for making rib reinforced paper |
| CN112726290A (en) * | 2020-12-30 | 2021-04-30 | 旌德县成宇纸管厂（普通合伙） | Processing device for paper tube paperboard |
| CN113699690A (en) * | 2021-09-30 | 2021-11-26 | 许玉梅 | Composite non-woven fabric processing technology |
-
2022
- 2022-01-29 CN CN202210110872.8A patent/CN114411450A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2188601Y (en) * | 1994-04-01 | 1995-02-01 | 宋大兴 | Reinforced cement bag paper |
| CN2249257Y (en) * | 1995-07-31 | 1997-03-12 | 路全恩 | Double-corrugated ribbed composite paper |
| CN1334222A (en) * | 2000-07-14 | 2002-02-06 | 清华大学 | Method and apparatus for making rib reinforced paper |
| CN112726290A (en) * | 2020-12-30 | 2021-04-30 | 旌德县成宇纸管厂（普通合伙） | Processing device for paper tube paperboard |
| CN113699690A (en) * | 2021-09-30 | 2021-11-26 | 许玉梅 | Composite non-woven fabric processing technology |
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