Efficient separation device for bonded fabric

Abstract

In order to solve the problems in the prior art, the utility model provides an efficient separating device for bonded fabrics, which comprises a first conveying mechanism and a second conveying mechanism for conveying materials to be processed, and a needle roller and an auxiliary grinding roller are clamped between the first conveying mechanism and the second conveying mechanism and on two sides of the bonded fabrics to be processed. And the rotating directions of the needle roller and the auxiliary grinding roller are that the adhesive fabric to be treated is conveyed from the first conveying mechanism to the second conveying mechanism. A plurality of rows of crochet hooks are vertically arranged on the needle roller along the outer surface of the roller relative to a roller shaft, and an arc-shaped hook is arranged at one end of each crochet hook. A fabric unhooking mechanism is arranged on the side, moving from top to bottom, of the arc-shaped hook in the rotating direction of the needle roller. According to the underwear cup leftover material separating device, automatic and efficient supporting layer and fabric separating operation can be achieved on underwear cup leftover materials, and therefore the supporting layer and the fabric obtained through separation can be recycled or treated correspondingly.

Description

Technical Field

[0001] The utility model relates to the technical field of fabric processing, in particular to a high-efficiency separation device for bonded fabrics. Background Art

[0002] The textile industry, for example, generates a significant amount of bonded fabric scraps during production, particularly in bra cup manufacturing. Because adhesives bind the fabric's support layers (such as sponge, polymer elastic material, and cotton), separating these scraps from the fabric is difficult without manual tearing. However, the labor and associated recycling costs of separation are high. As a result, most manufacturers simply discard these scraps and send them to landfills, resulting in significant waste and significant environmental costs associated with post-processing. Utility Model Content

[0003] To address the problems of the prior art, the present invention provides a highly efficient bonded fabric separation device, comprising: a first conveying mechanism for conveying the bonded fabric to be processed; and a second conveying mechanism for conveying a support layer. Between the first and second conveying mechanisms, at least one set of needle rollers and at least one set of auxiliary grinding rollers are sandwiched on either side of the bonded fabric to be processed. The needle rollers and auxiliary grinding rollers rotate in a direction that conveys the bonded fabric to be processed from the first conveying mechanism to the second conveying mechanism.

[0004] The first transport mechanism transports the bonded fabric to be treated to the needle roller, the needle roller hooks the surface fabric of the bonded fabric to be treated and separates it from the supporting layer, the auxiliary grinding roller transfers the supporting layer to the second transport mechanism, and the second transport mechanism transports the supporting layer to the external supporting layer processing unit.

[0005] The needle roller is equipped with several rows of hooks arranged vertically along its outer surface relative to the roller axis. The ends of the hooks facing away from the roller are equipped with curved hooks, with their tips facing away from the fabric to be bonded. A fabric unhooking mechanism is located on the side of the curved hooks where they move downward in the direction of the needle roller's rotation. This mechanism hooks the fabric from the curved hooks and delivers it to an external fabric processing unit.

[0006] Furthermore, the auxiliary grinding roller surface is provided with wave-shaped or tooth-shaped protrusions.

[0007] Furthermore, the fabric unhooking mechanism includes a disengagement plate and a conveyor belt. The disengagement plate is inserted into the arcuate hook array of the needle roller and has arcuate hook slots located at the arcuate hook positions. The disengagement plate is provided on the plate surface between the arcuate hook slots. The disengagement plate is a triangular plate-like structure, with its top end positioned between the arcuate hooks, a concave arc surface facing the fabric, and its bottom end flush with the disengagement plate surface.

[0008] Furthermore, an arcuate groove matching the top rotating wheel of the conveyor belt is provided on the side wall of the separation plate facing the conveyor belt, and the top rotating wheel of the conveyor belt is inserted into the arcuate groove so that the transmission surface of the conveyor belt is basically in contact with the side wall of the separation plate.

[0009] Furthermore, a limiting wheel is provided above the transmission surface on a side of the conveyor belt close to the separation plate, and the rotation direction of the limiting wheel matches the transmission direction of the transmission surface.

[0010] Furthermore, the two ends of the needle roller and the auxiliary grinding roller are rotatably mounted on a lifting control mechanism. The lifting control mechanism includes a support plate rotatably connected to the rotating shafts of the needle roller and the auxiliary grinding roller. The bottom of the support plate is fixedly connected to the lifting end of the lifting mechanism.

[0011] Furthermore, the rotating shafts of the needle roller and the auxiliary grinding roller are rotatably connected to the linkage plate, and the linkage plate is fixedly connected to the distance control mechanism.

[0012] Optionally, the distance control mechanism is a hydraulic lift or an electric lift.

[0013] Optionally, the distance control mechanism includes a numerically settable support, within which a screw is rotatably mounted. The screw is rotatably connected to the support via a first bearing at its mid-section, rotatably connected to the support via a second bearing at its top, and extends to the outside of the support and is rotatably connected to the support via a third bearing at its bottom. The bottom of the screw extends to the outside of the support and is fixedly connected to the output shaft of the reducer.

[0014] The screw has a first thread between the first and second bearings, and a second thread between the first and third bearings. The first and second threads are arranged in opposite directions. A first slider is threaded onto the first thread, and a second slider is threaded onto the second thread. The sidewalls of the first and second sliders are inserted into corresponding inner grooves in the support.

[0015] The pillar has long through holes at the positions of the first and second threads. A first connecting shaft passing through the long through hole is fixed to the first slider, and the first connecting shaft is fixed to one side of the linkage plate. A second connecting shaft passing through the long through hole is fixed to the second slider, and the second connecting shaft is fixed to the other side of the linkage plate.

[0016] Furthermore, a solvent spraying mechanism is provided at the outlet end of the first transport mechanism, and the solvent spraying mechanism is used to spray the solvent onto the bonded fabric to be processed.

[0017] The beneficial effect of the utility model is that the utility model can realize the automatic and efficient separation operation of the support layer and the fabric of the adhesive fabric of the scraps in the manufacturing process of the underwear bra cup, so that the separated support layer and fabric can be recycled or processed accordingly. Since the separated material is no longer a bonded mixture of the support layer and the fabric, the difficulty of recycling or post-processing is significantly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of the main body of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the crochet hook of the utility model;

[0020] Figure 3 This is a structural diagram of the fabric unhooking mechanism of the utility model;

[0021] Figure 4 This is a schematic structural diagram of the decoupling plate of the utility model;

[0022] Figure 5 This is a structural diagram of the lifting control mechanism of the utility model;

[0023] Figure 6 This is a structural diagram of a distance control mechanism of the utility model;

[0024] Figure 7 This is a structural diagram of the linkage plate of the utility model;

[0025] In the picture:

[0026] 1. First transport mechanism; 2. Second transport mechanism; 3. Fabric to be bonded; 4. Needle roller; 401. Hook needle; 402. Arc hook; 5. Auxiliary grinding roller; 6. Fabric unhooking mechanism; 601. Disengagement plate; 6011. Arc groove; 602. Unhooking plate; 603. Conveyor belt; 604. Arc hook groove; 7. Limiting wheel; 8. Lifting control mechanism; 801. Support plate; 802. Lifting mechanism; 9. Distance control mechanism; 901. Pillar; 902-A. First thread; 902-B. Second thread; 903. First bearing; 904. Second bearing; 905. Third bearing; 906. Cover; 907-A. First slider; 907-B. Second slider; 908. Inner slide; 909. Reducer; 910. Screw; 10. Linking plate. DETAILED DESCRIPTION

[0027] The present invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner.

[0028] Please note that the terms "above", "below", "left", "right", "top", "top", "bottom", "bottom", etc. used in this utility model to describe the positional relationship do not represent the absolute positional relationship between the modules / components / assemblies / components / parts, but the relative positional relationship between the modules / components / assemblies / components / parts.

[0029] Example 1

[0030] An efficient separation device for bonded fabrics, e.g. Figure 1 As shown, the device comprises: a first conveying mechanism 1 for conveying a bonded fabric 3 to be processed, and a second conveying mechanism 2 for conveying a support layer. Between the first conveying mechanism 1 and the second conveying mechanism 2, one or two sets of needle rollers 4, or other number required by the design, and one or two sets of auxiliary grinding rollers 5, or other number required by the design, are sandwiched on both sides of the bonded fabric 3 to be processed. The needle rollers 4 and auxiliary grinding rollers 5 rotate in a direction that conveys the bonded fabric 3 to be processed from the first conveying mechanism 1 to the second conveying mechanism 2.

[0031] The first conveying mechanism 1 conveys the bonded fabric 3 to be processed to a needle roller 4, which hooks the surface fabric of the bonded fabric 3 and detaches it from the support layer. The auxiliary grinding roller 5 transfers the support layer to the second conveying mechanism 2, which then conveys the support layer to an external support layer processing unit. Depending on the bonded fabric to be processed, the support layer can be a sponge layer, a polymer elastic material layer, a cotton layer, or other materials.

[0032] like Figure 1 As shown, at this time, the bonded fabric 3 to be treated is laid flat from the first transport mechanism 1 on the right and moves to the second transport mechanism 2 on the left. At this time, the needle roller 4 and the auxiliary grinding roller 5 located above the bonded fabric 3 to be treated move clockwise, and the needle roller 4 and the auxiliary grinding roller 5 located below the bonded fabric 3 to be treated move counterclockwise.

[0033] like Figures 1 to 3 As shown, the needle roller 4 is provided with several rows of hook needles 401 arranged vertically along its outer surface relative to the roller axis. The ends of the hook needles 401 facing away from the roller are provided with arcuate hooks 402, with the hook tips of the arcuate hooks 402 facing away from the bonded fabric 3 to be processed. A fabric unhooking mechanism 6 is provided on the side of the arcuate hooks 402 that moves downward in the direction of rotation of the needle roller 4. The fabric unhooking mechanism 6 hooks the fabric with the arcuate hooks 402, detaching it from the hooks 402 and conveying it to an external fabric processing unit.

[0034] The device operates as follows: the first conveyor mechanism 1 conveys the bonded fabric 3 to be processed to the needle roller 4, where the curved hook 402 on the needle roller 4 is forced to penetrate the fabric layer of the bonded fabric 3. As the bonded fabric 3 moves from the first conveyor mechanism 1 to the second conveyor mechanism 2, driven by the rotation of the auxiliary grinding roller 5 and the needle roller 4, the curved hook 402 gradually moves away from the bonded fabric 3. The fabric layer caught by the curved hook 402 is torn off the surface of the supporting plate and, being carried by the curved hook 402 along with the needle roller 4, rotates to the fabric release mechanism 6. The fabric release mechanism 6 releases the curved hook 402 and transports it to an external fabric processing unit. The auxiliary grinding roller 5 provides transmission force and polishes away any residue on the surface of the supporting plate.

[0035] The utility model can realize the automatic and efficient separation operation of the support layer and the fabric for the bonded fabric, especially the scraps from the production of underwear bra cups, so that the separated support layer and fabric can be recycled or processed accordingly. Since the separated material is no longer a bonded mixture of the support layer and the fabric, the difficulty of recycling or post-processing is significantly reduced.

[0036] According to one embodiment of the present invention, the auxiliary grinding roller 5 is provided with a wave-shaped or tooth-shaped protrusion on its wheel surface. This configuration can increase the friction between the auxiliary grinding roller 5 and the bonded fabric 3 to be processed or the supporting layer, thereby preventing the bonded fabric 3 to be processed or the supporting layer from moving more stably and helping the needle roller 4 to tear the fabric off the supporting layer.

[0037] Example 2

[0038] An efficient separation device based on the bonded fabric of Example 1, such as Figure 1 and Figure 3 As shown, the fabric unhooking mechanism 6 comprises a disengagement plate 601 and a conveyor belt 603. The disengagement plate 601 is inserted into the array of arcuate hooks 402 on the needle roller 4 and has arcuate hook slots 604 defined at the locations of the arcuate hooks 402. The disengagement plate 602 is provided on the plate surface between the arcuate hook slots 604. The disengagement plate 602 is a triangular plate-like structure, with its top end positioned between the arcuate hooks 402, its surface facing the fabric being concave, and its bottom end flush with the surface of the disengagement plate 601.

[0039] At this time, when the torn fabric moves with the needle roller 4 to the position of the detachment plate 601, it moves along the detachment plate 602 under the restriction of the detachment plate 602 and detaches from the arc-shaped hook 402. The detached fabric moves to the conveyor belt 603 and is transported by the conveyor belt 603 to the external fabric processing unit.

[0040] The unhooking plate 602 adopts the structural method of this embodiment, which can make the fabric be subjected to a gradually increasing disengagement force when it disengages from the arc hook 402, which helps the fabric to be smoothly disengaged. The design of the concave arc surface can make the disengaged fabric slide smoothly to the conveyor belt 603, avoiding accumulation on the disengagement plate 601.

[0041] Example 3

[0042] An efficient separation device based on the bonded fabric of Example 2, such as Figure 4 As shown, the side wall of the separation plate 601 facing the conveyor belt 603 is provided with an arc groove 6011 that matches the top rotating wheel of the conveyor belt 603. The top rotating wheel of the conveyor belt 603 is inserted into the arc groove 601, so that the transmission surface of the conveyor belt 603 is basically in contact with the side wall of the separation plate 601.

[0043] This setting can reduce the distance between the conveying surface of the conveyor belt 603 and the end of the board surface of the separation plate 601, preventing the fabric from slipping into the gap between the separation plate 601 and the conveyor belt 603, causing equipment jamming or fabric falling.

[0044] Example 4

[0045] An efficient separation device based on the bonded fabric of Example 2, such as Figure 1 As shown, a limiting wheel 7 is provided above the transmission surface on the side of the conveyor belt 603 close to the separation plate 601. The rotation direction of the limiting wheel 7 matches the transmission direction of the transmission surface.

[0046] This arrangement can force the fabric close to the conveyor belt 603 to fit the conveyor belt 603 under the action of the limiting wheel 7, so that the fabric can be transported away by the conveyor belt 603.

[0047] Example 5

[0048] Based on the high-efficiency separation device for bonded fabrics in Example 1, both ends of the needle roller 4 and the auxiliary grinding roller 5 are rotatably mounted on the lifting control mechanism 8 .

[0049] like Figure 5 As shown, the lifting control mechanism 8 includes a support plate 801 rotatably connected to the rotating shafts of the needle roller 4 and the auxiliary grinding roller 5. The bottom of the support plate 801 is fixedly connected to the lifting end of the lifting mechanism 802.

[0050] This arrangement can adjust the positions of the needle roller 4 and the auxiliary grinding roller 5 in the vertical direction as a whole as needed, thereby increasing the adaptability of the equipment.

[0051] Example 6

[0052] In the high-efficiency separation device for bonded fabrics according to Example 5, the rotating shafts of the needle roller 4 and the auxiliary grinding roller 5 are rotatably connected to the linkage plate 10 , and the linkage plate 10 is fixedly connected to the distance control mechanism 9 .

[0053] The linkage plate 10 can realize synchronous up and down displacement control of the needle roller 4 and the auxiliary grinding roller 5 on the same side, thereby avoiding the need for calibration work after the needle roller 4 and the auxiliary grinding roller 5 have relative up and down displacement.

[0054] In addition, the distance control mechanism 9 can realize the distance control between different linkage plates 10, thereby adjusting the mutual distance between different groups of needle rollers 4 and auxiliary grinding rollers 5 to adapt to scrap materials of different thicknesses.

[0055] According to one embodiment of the present invention, the distance control mechanism 9 is a hydraulic lift or an electrically controlled lift platform. In this case, the fixed end of the hydraulic lift or electrically controlled lift platform can be fixed to one interlocking plate 10, and the lifting end can be fixed to another interlocking plate 10. By adjusting the lifting end, the distance between the two interlocking plates 10 can be controlled, thereby adjusting the distance between different groups of needle rollers 4 and auxiliary grinding rollers 5. This method has relatively low control accuracy, but the structure is mature and suitable for applications where the distance control between the needle rollers 4 and auxiliary grinding rollers 5 is not critical.

[0056] According to one embodiment of the present invention, Figure 6 As shown, the distance control mechanism 9 comprises a numerically adjustable support 901, within which a screw 910 is rotatably mounted. Screw 910 is rotatably connected to support 901 at its center via a first bearing 903. Its top portion is rotatably connected to support 901 via a second bearing 904. A cover 906 may be installed as needed to protect second bearing 904. The bottom portion of screw 910 extends outside support 901 and is rotatably connected to support 901 via a third bearing 905. The bottom portion of screw 910 extends outside support 901 and is fixedly connected to the output shaft of a speed reducer 909.

[0057] The screw 910 has a first thread 902-A between the first bearing 903 and the second bearing 904, and a second thread 902-B between the first bearing 903 and the third bearing 905. The first and second threads 902-A and 902-B are arranged in opposite directions. A first slider 907-A is threaded onto the first thread 902-A, and a second slider 907-B is threaded onto the second thread 902-B. The sidewalls of the first and second sliders 907-A and 907-B are inserted into corresponding inner grooves 908 provided in the support 901.

[0058] The support 901 has long through-holes at the locations of the first thread 902-A and the second thread 902-B. A first connecting shaft 910-A is fixed to the first slider 907-A, passing through the long through-hole. The first connecting shaft 910-A is fixed to one side of the linkage plate 10. A second connecting shaft 910-B is fixed to the second slider 907-B, passing through the long through-hole. The second connecting shaft 910-B is fixed to the other side of the linkage plate 10.

[0059] At this time, by controlling the speed reducer 909 to output power in different directions, the screw 910 can be driven to rotate in different directions. Since the first thread 902-A and the second thread 902-B provided on the screw 910 are in opposite directions, when the screw 910 rotates, the first and second sliders 907-A, 907-B, which are screwed together, can only move toward or away from each other synchronously under the limiting action of the inner slide 908, thereby driving the linkage plate 10 connected to the first and second sliders 907-A, 907-B to move toward or away from each other synchronously, thereby achieving the adjustment of the mutual spacing between different groups of needle rollers 4 and auxiliary grinding rollers 5.

[0060] The device has high motion accuracy and is suitable for working occasions where the distance between the needle roller 4 and the auxiliary grinding roller 5 needs to be accurately controlled.

[0061] Example 7

[0062] The highly efficient separation device for bonded fabrics according to embodiment 1 is provided with a solvent spraying mechanism at the outlet end of the first transport mechanism 1 , and the solvent spraying mechanism is used to spray the solvent onto the bonded fabric 3 to be processed.

[0063] Most bonded fabrics 3 to be treated are bonded to the support layer with an adhesive. Therefore, spraying a dissolving agent (agent that dissolves the adhesive or weakens the adhesive force) on the bonded fabric 3 to be treated can facilitate subsequent fabric peeling. The dissolving agent can be selected according to the type of adhesive.

[0064] Based on the above-mentioned ideal embodiment of the present invention, and in accordance with the above description, relevant personnel can make various changes and modifications without departing from the technical scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, but must be determined according to the scope of the claims.

Claims

1. An efficient separation device for bonded fabrics, characterized in that: include: A first transport mechanism (1) for transporting the bonded fabric (3) to be treated, and a second transport mechanism (2) for transporting the support layer, wherein at least one set of needle rollers (4) and at least one set of auxiliary grinding rollers (5) are provided between the first transport mechanism (1) and the second transport mechanism (2) on both sides of the bonded fabric (3) to be treated; the needle rollers (4) and the auxiliary grinding rollers (5) are rotated in such a way as to transport the bonded fabric (3) to be treated from the first transport mechanism (1) to the second transport mechanism (2); The first transport mechanism (1) transports the bonded fabric to be treated (3) to the needle roller (4), the needle roller (4) hooks the surface fabric of the bonded fabric to be treated (3) and separates it from the support layer, the auxiliary grinding roller (5) transports the support layer to the second transport mechanism (2), and the second transport mechanism (2) transports the support layer to the external support layer processing unit; The needle roller (4) is provided with several rows of crochet needles (401) arranged vertically along the outer surface of the roller relative to the roller shaft, and an arc-shaped hook (402) is provided at one end of the crochet needle (401) away from the roller, and the hook tip of the arc-shaped hook (402) faces the side opposite to the bonded fabric (3) to be processed; along the rotation direction of the needle roller (4), a fabric unhooking mechanism (6) is provided on the side where the arc-shaped hook (402) moves from top to bottom, and the fabric unhooking mechanism (6) hooks the arc-shaped hook (402) to detach the fabric from the arc-shaped hook (402) and transports it to an external fabric processing unit.

2. The high-efficiency separation device for bonded fabrics according to claim 1, characterized in that: The auxiliary grinding roller (5) is provided with wave-shaped or tooth-shaped protrusions on its wheel surface.

3. The high-efficiency separation device for bonded fabrics according to claim 1, characterized in that: The fabric unhooking mechanism (6) comprises a disengaging plate (601) and a conveyor belt (603); the disengaging plate (601) is inserted into the array of arc-shaped hooks (402) of the needle roller (4), and is provided with arc-shaped hook grooves (604) at the positions of the arc-shaped hooks (402); the disengaging plate (601) is provided with a disengaging plate (602) on the plate surface between the arc-shaped hook grooves (604); the disengaging plate (602) is a triangular plate-like mechanism, the top end of which is located between the arc-shaped hooks (402), the side facing the fabric is an inwardly concave arc surface, and the bottom end is flush with the plate surface of the disengaging plate (601).

4. The high-efficiency separation device for bonded fabrics according to claim 3, characterized in that: The side wall of the separation plate (601) facing the conveyor belt (603) is provided with an arc groove (6011) matching the top rotating wheel of the conveyor belt (603), and the top rotating wheel of the conveyor belt (603) is inserted into the arc groove (6011), so that the transmission surface of the conveyor belt (603) is basically in contact with the side wall of the separation plate (601).

5. The high-efficiency separation device for bonded fabrics according to claim 3, characterized in that: A limiting wheel (7) is provided above the transmission surface on one side of the conveyor belt (603) close to the separation plate (601); the rotation direction of the limiting wheel (7) matches the transmission direction of the transmission surface.

6. The high-efficiency separation device for bonded fabrics according to claim 1, characterized in that: The two ends of the needle roller (4) and the auxiliary grinding roller (5) are rotatably mounted on a lifting control mechanism (8); the lifting control mechanism (8) comprises a support plate (801) rotatably connected to the rotating shafts of the needle roller (4) and the auxiliary grinding roller (5); the bottom of the support plate (801) is fixedly connected to the lifting end of the lifting mechanism (802).

7. The high-efficiency separation device for bonded fabrics according to any one of claims 1 or 6, characterized in that: The rotating shafts of the needle roller (4) and the auxiliary grinding roller (5) are rotatably connected to the linkage plate (10), and the linkage plate (10) is fixedly connected to the distance control mechanism (9).

8. The high-efficiency separation device for bonded fabrics according to claim 7, characterized in that: The distance control mechanism (9) is a hydraulic lift or an electric lift.

9. The high-efficiency separation device for bonded fabrics according to claim 7, characterized in that: The distance control mechanism (9) comprises: a numerically set support (901), wherein a screw (910) is rotatably mounted inside the support (901); the screw (910) is rotatably connected to the support (901) at a middle position of the support (901) via a first bearing (903), is rotatably connected to the support (901) at a top portion via a second bearing (904), and extends to the outside of the support (901) at a bottom portion and is rotatably connected to the support (901) via a third bearing (905); the bottom portion of the screw (910) extends to the outside of the support (901) and is fixedly connected to the output shaft of a speed reducer (909); The screw rod (910) is provided with a first thread (902-A) between the first bearing (903) and the second bearing (904), and a second thread (902-B) between the first bearing (903) and the third bearing (905); the first thread (902-A) and the second thread (902-B) are arranged in opposite directions; a first slider (907-A) is screwed onto the first thread (902-A), and a second slider (907-B) is screwed onto the second thread (902-B); the side walls of the first slider (907-A) and the second slider (907-B) are inserted into the inner slide groove (908) correspondingly opened on the pillar (901); The pillar (901) is provided with a long through hole at the position of the first thread (902-A) and the second thread (902-B); a first connecting shaft (910-A) passing through the long through hole is fixed on the first slider (907-A), and the first connecting shaft (910-A) is fixed to the linkage plate (10) on one side; a second connecting shaft (910-B) passing through the long through hole is fixed on the second slider (907-B), and the second connecting shaft (910-B) is fixed to the linkage plate (10) on the other side.

10. The high-efficiency separation device for bonded fabrics according to claim 1, characterized in that: The outlet end of the first transport mechanism (1) is provided with a solvent spraying mechanism, and the solvent spraying mechanism is used to spray the solvent onto the bonded fabric (3) to be treated.

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