EP3710624A1 - Technique de surveillance pour installations de fabrication de non-tissé - Google Patents

Technique de surveillance pour installations de fabrication de non-tissé

Info

Publication number
EP3710624A1
EP3710624A1 EP18814488.5A EP18814488A EP3710624A1 EP 3710624 A1 EP3710624 A1 EP 3710624A1 EP 18814488 A EP18814488 A EP 18814488A EP 3710624 A1 EP3710624 A1 EP 3710624A1
Authority
EP
European Patent Office
Prior art keywords
nonwoven
plant
fibers
monitoring method
fiber
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP18814488.5A
Other languages
German (de)
English (en)
Inventor
Eberhard HÄBERLE
Andreas Meier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Autefa Solutions Germany GmbH
Original Assignee
Autefa Solutions Germany GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Autefa Solutions Germany GmbH filed Critical Autefa Solutions Germany GmbH
Publication of EP3710624A1 publication Critical patent/EP3710624A1/fr
Pending legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G31/00—Warning or safety devices, e.g. automatic fault detectors, stop motions
    • D01G31/006—On-line measurement and recording of process and product parameters
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H13/00—Other common constructional features, details or accessories
    • D01H13/32—Counting, measuring, recording or registering devices
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G31/00—Warning or safety devices, e.g. automatic fault detectors, stop motions
    • D01G31/003—Detection and removal of impurities
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H13/00—Other common constructional features, details or accessories
    • D01H13/30—Moistening, sizing, oiling, waxing, colouring, or drying yarns or the like as incidental measures during spinning or twisting
    • D01H13/304—Conditioning during spinning or twisting
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • D04H1/74—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being orientated, e.g. in parallel (anisotropic fleeces)

Definitions

  • the invention relates to a monitoring technique for
  • Nonwoven manufacturing plants Nonwovens of different types of fibers and
  • Fiber blends are used in a wide variety of fields (e.g., toiletries, automotive trim, packaging, or construction materials).
  • synthetic fibers are preferably used. Also recycled fibers, e.g. made of plastic or carbon materials, are now processed into nonwovens.
  • Nonwoven products generally found in several
  • Fiber processing equipment usually solved from pressed bales and processed.
  • different fiber types are blended into a fiber blend.
  • a so-called fleece precursor is formed from the processed fibers.
  • Flor Strukturs pleaseden, in particular mechanical or aerodynamic cards or carding, are used.
  • This nonwoven precursor does not yet have the desired structure, in particular thickness or
  • the nonwoven precursor is in processed further steps.
  • the nonwoven precursor is available in different numbers
  • the object of the present invention is to provide a
  • the disclosure includes a monitoring technique that includes both a monitoring method and appropriate ones
  • the disclosure includes
  • Nonwoven product consists of a variety
  • the settings can be made at the start of a
  • Production run (set-up time) once and / or continuously made during production.
  • the fleece preproduction plant may be part of a larger fleece manufacturing plant.
  • Nonwoven prefabrication process fibers into a nonwoven precursor. It represents a first process phase within the larger nonwoven fabrication plant.
  • a nonwoven prefabrication plant may in particular comprise one or more fiber conditioning devices and one or more pile forming devices, e.g. a card.
  • the entire fleece manufacturing plant processes fibers up to the finished nonwoven fabric.
  • the nonwoven precursor is an intermediate product of the entire nonwoven production process.
  • the monitoring device can be part of a
  • a first essential aspect of the invention relates to the detection of properties of an unprocessed
  • the nonwoven precursor can be produced, for example, in several cards in a row to provide a necessary edge thickness for the
  • the unprocessed pile of the nonwoven precursor still has little cohesion between the fibers.
  • Nonwoven precursor is unprocessed especially after pile formation (for example, since leaving a card).
  • the fibrous web formed in the pile forming device is unprocessed especially after pile formation (for example, since leaving a card).
  • Fiber precursor is unchanged in the coverage area.
  • a change in the structure of the nonwoven precursor occurs only after the detection area.
  • the nonwoven precursor is usually following a nonwoven prefabrication in one
  • Post-processing plant changed in its structure.
  • the further processing includes e.g. a consolidation of the pile, also called "bonding"
  • Solidification techniques known. For example, the pile is calendered during further processing, needled or solidified with water jets. The structure of the pile is changed (eg, solidified) so that the desired product properties of the nonwoven product are achieved.
  • One aspect of the present invention is that already the properties of a nonwoven precursor are automatically detected in order to monitor the production process.
  • the detected properties of the nonwoven precursor may be e.g. the basis weight, the humidity, the
  • Fiber orientation the degree of opening of the fibers
  • the detection of the properties of the nonwoven precursor has various advantages.
  • the properties of the nonwoven precursor has various advantages.
  • Vliesvor s significantly affect the processing in the processing facilities of
  • Fiber orientation in the nonwoven precursor influences the mechanical strength of the nonwoven product. It is therefore advantageous already the properties of
  • Nonwoven precursor is also beneficial to the Further processing facilities of
  • the irradiation on a thin batt can be measured better than on a further processed batt.
  • Particularly advantageous are measurements by means of infrared radiation and / or radioactive radiation on the nonwoven precursor.
  • Another essential aspect of the disclosure is the detection of a property of the nonwoven precursor over its width.
  • the nonwoven precursor is conveyed as a web-shaped batt in the production direction.
  • the spatial or areal distribution of the properties longitudinally and / or transversely to the production direction has particular significance for the quality of the product. Properties like that
  • Fiber orientation can have local differences. Local defects, material clusters, lumps or similar effects can be detected in the spatial distribution of the properties.
  • Width of the web precursor detected means the extension of a fiber stream or a nonwoven precursor (ie a card web) transverse to the direction of production (ie conveying direction).
  • the detection range extends over the entire working width of a pile forming device (eg a card).
  • the detection can be done by means of a stationary or movable sensor.
  • the detection preferably takes place with constant accuracy over the entire width of the web precursor.
  • Properties recorded It can be determined as a cross-sectional profile and / or a longitudinal course of the properties.
  • consecutive measurements can be made at several local detection locations.
  • the local detection locations can be offset in the longitudinal and / or transverse direction to each other.
  • the local detection locations overlap.
  • Property profile can in particular from a
  • Combination of overlapping detection sites of constant measurement accuracy are generated.
  • location information and / or time information is acquired for each detected property.
  • the two-dimensional distribution of a property is detected.
  • the weight is detected as the basis weight distribution.
  • Distribution of a property preferably refers to the surface of the card web. With the spatial distribution, the areal distribution of a property is preferred meant parallel to the card web. It's special
  • Area of the card web can lead to strong distortions or noise in the detection result.
  • the moisture in the nonwoven precursor can affect the others
  • Automated control actions to control or control properties of the nonwoven precursor can meet higher quality requirements.
  • Nonwoven product if at all, only at the end of the
  • Properties can be used for a one-time adjustment during a retrofit or a production startup.
  • the properties can be determined from the detection results during the
  • Nonwoven prefabrication system are regulated. Particularly advantageous is the regulation of a
  • Fiber preparation device and / or a
  • a detection of the properties close to the exit of the web precursor from a pile forming device is particularly advantageous for this purpose.
  • the shorter dead times can be achieved in the regulation or control of the machines. Short dead times increase the control quality. By early detection of property variations, the rejects can be reduced. By recording the properties of the unprocessed nonwoven precursor In particular, tighter quality tolerances can be achieved for the finished nonwoven product.
  • a non-contact measurement technique e.g. Infrared, X-ray or radioactive radiation and optical
  • Measuring method to be used One or more of:
  • Sensors or radiation sources can be arranged above and / or below the batt.
  • the sensors may be stationary or movable. Also one
  • sensors can be moved across the width of the nonwoven preform transversely to the production direction. This is particularly advantageous for detecting a spatial or areal distribution of the properties.
  • the measurements take place in a detection area, whose arrangement within the production plant
  • sensors e.g. to measure the humidity, perform local measurements.
  • sensors can take measurements over a certain area of the
  • the detection range for detecting the properties of the nonwoven precursor is preferably located directly at or close to the exit of the nonwoven precursor from the
  • Solidification device is particularly advantageous.
  • Certain properties of the nonwoven precursor such as the fiber orientation or the degree of fiber opening, can be better captured in the unprocessed batt. Also can be detected
  • Fiber conditioning or pile forming process is facilitated by this advantageous arrangement of the detection area.
  • the monitoring process is used to monitor the production process and product quality. Depending on Use can be made of high quality requirements for the nonwoven fabric. As part of the
  • the monitoring device can be part of a
  • Fleece preproduction plant which is specially designed to perform the monitoring process.
  • Monitoring device may specifically for the adjustment and / or regulation of the web preproduction plant
  • Actuators can have actuators with which physical settings on a
  • Fiber preparation device or a
  • Another essential aspect of the disclosure is the monitoring of the moisture and / or electrostatic charge of the fibers or of the nonwoven precursor. This aspect of the disclosure has its own inventive meaning.
  • the disclosed monitoring technique affects changing environmental conditions or fluctuating ones
  • Fiber properties did not negatively impact product quality. Quality deviations can be prevented or
  • the monitoring technology reduces waste.
  • Friction can cause electrostatic charging of materials or components.
  • fiber fly or adhesion of fibers to components due to electrostatic fields may be undesirable.
  • Machine components e.g. Conveyor belts, attach and disrupt the production process.
  • electrically non-conductive or only weakly conductive materials e.g.
  • Plastics can lead to electrostatic charging of the fiber material.
  • Moisture can be electrical charges of the
  • Fiber material can be reduced or even prevented. Both the moisture of the fibers themselves and the ambient air play a role in the quality of the manufacturing process. In addition to electrostatic effects, moisture can in turn adversely affect machine components.
  • Too high humidity leads to corrosion of machine components. Too high
  • Fiber moisture can lead to undesirable properties in the nonwoven precursor or finished nonwoven product (e.g., lumping). Too low humidity can promote electrostatic fields.
  • Durability of the system advantageous to monitor the moisture and / or the electrical charge of the fibers and / or the nonwoven precursor.
  • the moisture is kept in an optimum range. Preference is given to the relative humidity in
  • the climatic environmental conditions of a system can vary considerably depending on the place of use and the season
  • Ambient temperatures can be controlled independently of the external environment.
  • Fiber types and sources the properties of multiple fiber streams can be monitored separately.
  • Transport conditions can be in the plant
  • introduced fibers have different properties (e.g., humidity). Automated monitoring of the properties of the fibers or the nonwoven precursor can compensate for external factors.
  • the moisture and / or electrical charge of the fibers or a nonwoven precursor are detected by a detection device.
  • the detection device may comprise one or more sensors. Preferably, infrared sensors are used.
  • Acquisition results represent an important data source.
  • the results of the collection can be analyzed for different purposes.
  • the data can be used to control or control the system.
  • the data can be used to control or control the system.
  • the data can be used to control or control the system.
  • the data can be used to control or control the system.
  • the data can be used to control or control the system.
  • Quality assurance can be used.
  • the data can be processed in real time and / or stored permanently. On the basis of the detected humidity or electrical charge, suitable control interventions on the system
  • Stellanmony can in particular via a bus system between data processing units (for example, the
  • Detection device and a plant control are exchanged.
  • Non-woven manufacturing plant to be set with an air conditioner.
  • the air conditioning system is preferably designed to heat or cool the ambient air.
  • the air can be humidified and / or dried.
  • moisture may be applied directly to the fibrous material (e.g., by spraying, brushing or wetting). Alternatively or additionally, moisture can be indirectly increased or removed via the ambient air.
  • the fibrous material e.g., by spraying, brushing or wetting.
  • Air conditioning fiber or air drying are Air conditioning fiber or air drying.
  • a moistening device for example, a
  • Liquid sprayed on fibers The fibers can increase their moisture by increasing their humidity
  • Air conditioning area by a dry ambient air be kept to an optimal level.
  • a targeted moistening of the fibers may be advantageous.
  • the air-conditioned area of the nonwoven manufacturing facility is advantageously locally limited.
  • a separated air conditioning area increases the energy efficiency of the system, especially in comparison with a
  • Air conditioning of a whole hall Air conditioning of a whole hall.
  • the actuating instruction preferably comprises a control value for a quantity of liquid, a temperature specification or a moisture specification.
  • positioning instructions can be used for mechanical values
  • Actuators e.g., speed for a drive, angle for a lead, position of a range, motion.
  • the components of the plant have suitable characteristics
  • Fiber sources are used. Differences between the properties of different fiber streams can be detected and compensated.
  • the detection area can be arranged at different locations in the nonwoven manufacturing plant.
  • An arrangement of a detection range is advantageous at the exit of a pile forming device (eg card, airlay, spunbonding device) or a
  • Fiber conditioning equipment e.g., bale breaker
  • Fiber opener , metering device, fiber mixing device.
  • a detection area may be arranged in a bale breaker, behind a fiber mixing device and / or at the outlet of a flock feeder.
  • Capture results can include raw metrics or pre-processed property data.
  • Data conditioning algorithms are used to enrich the measurement data with time and space information. Furthermore, patterns can be determined in the time or space-related course of the detection results.
  • the detection results can both in a memory, in particular a suitable
  • Production process can already be detected in the nonwoven precursor.
  • a transverse and / or longitudinal profile of the properties is generated from the detection results.
  • the longitudinal profile can in particular be a temporal and / or local course of the properties along the
  • the transverse profile comprises a profile of the properties across the width of the nonwoven precursor and / or a fiber stream.
  • a location and / or time information is stored for a detected property.
  • the location of a measurement in running meters relative to a reference location e.g., running meters since production start
  • a production time e.g., date and time
  • Properties with the detection location are particularly advantageous for precise control or regulation of the properties.
  • Properties can be compared to target properties to detect property variations.
  • Nonwoven prefabrication plant produced. In the creation of Stellan Anlagenen both the recorded
  • the properties of the nonwoven precursor can be regulated by adjusting the nonwoven prefabrication system.
  • other information e.g. be taken into account by other sensors of the plant.
  • the fiber opening degree can be measured and adjusted by adjusting one or more
  • Fiber opening devices are regulated. Suitable positioning instructions are generated and sent either to a plant controller, directly to a fiber conditioning or pile forming facility, or to a suitable operator
  • Actuators can be used on the basis of the positioning instructions
  • Nonwoven prefabrication system change the fiber preparation or pile forming process such that the sensed properties change in the desired direction. For example, an instruction for a
  • Adjusting device are transmitted to the feed shaft of a flake feeder.
  • an actuator e.g. one
  • Electric motor is the width of the feed shaft
  • neural networks or fuzzy controllers for processing the detection results and the generation of suitable positioning instructions.
  • Figure 1 a schematic representation of a
  • Monitoring device 40
  • central system control (11)
  • an air conditioning system (12)
  • Figure 2 a schematic representation of a
  • Nonwoven prefabrication system 10 having a feeder (31), a carding machine (32) and an adjusting device (50);
  • Figure 3 a schematic representation of a
  • Nonwoven manufacturing plant with a nonwoven prefabrication plant (10) and a nonwoven layer (91) and a
  • Figure 4 a schematic plan view of a
  • Figure 5 a schematic representation of a
  • a fleece manufacturing plant (15) may vary depending on
  • the fleece production plant (15) comprises a fleece pre-production plant (10) for producing a fleece precursor (3) and one or more further processing facilities (90) for processing the fleece precursor (3) to the finished one
  • Nonwoven fabric (7) Nonwoven fabric (7).
  • Various conveyors can be used to transport the fibers or the batt between the individual machines.
  • FIG. 1 shows a nonwoven production line (15) with a nonwoven prefabrication system (10) and a
  • Nonwoven prefabrication plant (10) comprises a
  • Fleece manufacturing plant also has a
  • fibers (1) are processed in one or more fiber processing devices (20). From the processed fibers (2) is then in one or more fiber processing devices (20).
  • the fleece precursor (3) consists of a still unprocessed Faserflor.
  • the monitoring device (40) has a
  • Nonwoven precursor (3) The properties of the
  • Nonwoven precursor (3) in particular its moisture, electric charge, weight distribution, fiber orientation, fiber mixing ratio and / or fiber opening degree are detected in a detection area (5).
  • the arrangement of the detection area (5) close to the exit of the web precursor (3) from the pile forming device (30) is particularly advantageous.
  • the detection device (41) and / or the detection region (5) can lie both inside and outside the pile forming device (30).
  • Processing steps to the finished nonwoven fabric (7) further processed.
  • the structure of the batt is changed.
  • the pile can be applied in multiple layers in a nonwoven layer (91).
  • Parts of the fleece preproduction plant (10) are preferably air-conditioned. Particularly in regions with a humid climate, the embodiment is advantageous for influencing the moisture and / or temperature of the fibers or of the nonwoven precursor (3).
  • the nonwoven manufacturing facility (15) may have one or more air conditioning units (12).
  • the process zone is within the Fiber preparation device (20) and / or the
  • Nonwoven forming device (30) conditioned can be air-conditioned by an air conditioner (12).
  • the air conditioner (12) is in this preferred embodiment with the
  • the air conditioning system (12) may also receive direct setting instructions (45) from the monitoring device (40).
  • the detection device (41) performs measurements on
  • Nonwoven precursor in the detection area (5) may be moved over the nonwoven precursor (3).
  • the movement of a sensor (410) can be along or transversely to the conveying direction of the
  • Nonwoven precursor (3) take place.
  • the movement of a sensor (410) can be controlled as a function of the conveying speed of the web precursor (3) in the detection area (5). This is particularly advantageous in order to facilitate the assignment of the detection results to the associated section of the running nonwoven precursor (3).
  • Individual or all sensors (410) can also be arranged stationary. Particularly advantageous is the stationary arrangement for local measurements, e.g. the humidity of the
  • Nonwoven precursor (3) The sensors (410) can be arranged both above and below the nonwoven precursor. In an alternative embodiment, the
  • the detection device (40) is designed to arrange suitable sensors (410) on the nonwoven precursor (3) in such a way that its properties can be reliably detected.
  • a monitoring device (40) also has a data processing unit (42).
  • Data processing unit (42) may be a digital
  • Memory with a data processing program and a processor include.
  • the data processing unit (42) is designed to detect the results of the
  • Data processing unit (42) can also be called
  • Embedded system of the detection device (410) or as part of the system controller (11) be formed.
  • Data processing unit (42) is designed to perform the claimed monitoring method.
  • the monitoring device (40) is in particular designed to generate setting instructions (45) for the adjustment of the fleece preproduction plant (10).
  • the monitoring device (40) regulates the properties of the nonwoven precursor (3).
  • the positioning instructions (45) can be generated according to a control algorithm.
  • the positioning instructions (45) preferably contain the
  • Controller is preferred in the monitoring unit (40), in particular in the data processing unit (42). Based on the appropriate positioning instructions (45), the manufacturing process within the
  • Nonwoven prefabrication system (10) adjusted so that change the properties of the nonwoven precursor (3) in the desired manner.
  • the positioning instructions (45) can also be used in another embodiment for an open-loop control or for precontrol.
  • the positioning instructions (45) are transmitted to the system controller (11) in this preferred embodiment.
  • the plant control (11) can be used for general control and monitoring of the entire fleece manufacturing plant (15). She is specially trained to
  • the system control (11) can
  • driver stages include to convert signal streams of the Stellan Anlagenen (45) into power streams.
  • the central plant control (11) can in particular over a bus network with different parts of the
  • the monitoring device (40) In addition to the
  • Detection results of the detection device (41) process additional information of the fleece production line (10).
  • desired properties of the nonwoven precursor (3) can be obtained or by a
  • the monitoring device (40) is adapted to deviations between the detected properties and desired properties of the
  • Target properties may be in fixed or variable values or
  • the desired moisture content of the nonwoven precursor can be set with a range of values between a minimum and a maximum moisture content
  • Both the detected and the desired properties can be present as determined values and / or as statistical values. Properties of the
  • Nonwoven precursor (3) can also be present as spatial and / or temporal distributions.
  • a regulation of the properties of the nonwoven precursor (3) to predetermined desired properties is special
  • Nonwoven fabric (7) to achieve.
  • Nonwoven precursor (3) is advantageous for the
  • Fiber orientation are in an early stage of the
  • Measurement methods that measure radiation that penetrates through the web can provide better information on a thin and non-solidified pile
  • Nonwoven prefabrication plant (10) on the basis of
  • Detection results of the monitoring device (40) and the efficiency of the system can be improved. Setup times can be shortened and the amount of
  • FIG. 2 shows a further embodiment of a
  • Monitoring device (40) generates setting instructions (45) and transmits them directly to a
  • Pile forming device (30). The pile forming facility
  • (30) preferably comprises a carding machine (32) and a feeder
  • the feeder (31) supplies the card (32) processed fibers (2).
  • the feeder (31) in particular from the processed fibers (2), a continuous fiber flow is formed which turns into a card in a card
  • the feeder (31) has guiding and conveying means for the fibers with which the fiber flow can be influenced. For example, the Cross section of the feed shaft in the feeder (31) to be changed.
  • An adjusting device (50) adjusts the
  • Fiber guiding agent according to a positioning instructions (45).
  • the adjusting device (50) may comprise a driver stage and actuators, in particular an electric motor.
  • Adjusting devices (50) are preferably at one
  • Actuators (50) may have a common interface for receiving actuation instructions (45).
  • the interface may be compatible with and communicate with a bus system of the floriculture plant (10).
  • the adjusting device (50) can also have a special actuator instead of a separate actuator
  • Actuator (50) can be unified
  • the monitoring technology can be supplied as a retrofit component for existing fleece fabrication systems.
  • Positioning instructions (45) are particularly advantageous in this case, since only the adjusting devices must be adapted to existing machines.
  • FIG. 3 shows a fleece pre-production plant (10) with a special fiber conditioning device (20).
  • the fiber preparation device (20) comprises a fiber mixing device (22) in which the different fiber types (1) are mixed.
  • the fiber mixing device (22) is preferred
  • bale breakers (21) in which the fiber is released from the bales.
  • the fiber conditioning device (20) can have one or more bale breakers (21) and / or fiber opening devices (23). With this fiber preparation device (20), the fibers (1) can be processed in such a way that they leave them in a pile forming device (30), in particular one
  • the pile forming device (30) can also comprise (additional) fiber opening devices, in particular fine openers for multistage
  • Fiber opening devices (23) are adjustable. Based the Stellan sauen (45) can be the
  • the fiber conditioning device (20) can also have a moistening device (24) (also Schmälzstation
  • fibers can be treated with various chemical agents, in particular wetted or sprayed with liquids.
  • an antistatic agent can be sprayed onto the fibers in order to prevent or reduce their static charge.
  • Other chemical treatments are possible.
  • the humidifying device is also adjustable. In particular, the moisture of the fibers by adjusting a
  • Humidifying be influenced.
  • FIG. 4 shows a plan view of a nonwoven precursor (3) between a pile forming device (30) and a further processing device (90).
  • the nonwoven precursor (3) is continuously in
  • Nonwoven Vor s be detected. Over time, measurements are taken in a zigzag or wave pattern,
  • Vliesvor s (3) transversely to the production direction (4) can be determined.
  • the profile describes the distribution of the properties of the nonwoven precursor.
  • a detected property at a detection location (5i) is preferably provided with location information and / or time information.
  • an automated setting can be made on a setting means (50) of a pile forming device (30) (for example a carding machine or a feed chute) or a
  • Fiber preparation device (20) are made.
  • a setting is made on an adjusting means (50) which is designed to locally influence the properties of the nonwoven preform (3).
  • the feed chute of a feeder (31) is adjusted.
  • the feed chute preferably has setting means which are designed to direct the fiber flow over the entire width and / or to the individual Adjust locations along the width of the nonwoven precursor. By adjusting the feed chute, the weight per unit area of the nonwoven precursor can be controlled and / or regulated locally and / or areally and / or globally.
  • further adjusting means (50) can be set automatically on a fiber preparation system (20) or a pile forming device (30), for example a bale breaker, the clothing of a carding machine (32), a metering device or a
  • the detection area (5) is preferably arranged following a first carding machine (32). In another
  • Embodiment is the detection area (5) in
  • the nonwoven precursor (3) in the detection area (5) is a laid and unconsolidated batt.
  • the structurally altering processing can be based on one or more properties of the
  • the detection area (5) is in
  • the detection area (4) is arranged in front of a first solidification device.
  • the nonwoven precursor may consist of a on or
  • the batt may, in particular, as part of the pile forming process
  • the thickness of the batt can thus be increased.
  • FIG. 5 shows a schematic representation of a
  • Embodiments of a monitoring technique in particular for the humidity and / or the electric charge.
  • Pale formation means (30) (e.g., a carding machine (32)) comprises an air conditioner (12).
  • the air conditioning system (12) is adapted to the ambient conditions, in particular the absolute or relative humidity and / or the temperature, in an air-conditioning area (13).
  • the air conditioning area is integrated into the carding machine (32).
  • the casing of the card is essentially climatically separated from the environment.
  • the nonwoven fabrication plant can have one or more
  • Air conditioning areas (13) or air conditioning systems (12) include.
  • the air conditioning area (13) may also be built around a machine (e.g., for retrofitting).
  • the web preproduction plant (10) may include one or more moistening devices (24).
  • the web preproduction plant (10) may include one or more moistening devices (24).
  • Moistening device (also referred to as a lubrication station) is designed to contain a liquid or a grease Apply fibers.
  • the moistening device (24) can in particular be a spray nozzle or other
  • humectant Preferably, distilled water is sprayed on. It can also be formed a fog. Alternatively or additionally, in one
  • Moistening station (24) a chemical, an additive or a lubricant are applied.
  • Humidifying device (24) can be combined with an air conditioner (12).
  • the moistening device comprises one or more
  • Liquid tanks and / or controllable pumps Liquid tanks and / or controllable pumps.
  • Air conditioning (12) may alternatively or additionally
  • Desiccant e.g., an infrared lamp, blower or heater.
  • the moistening device (24) can in particular be integrated into a machine, a fiber conditioning device (20) or a pile forming device (30).
  • Humidifying device (24) comprises a
  • Adjustment device (50) The setting device (50) is designed to receive setting instructions (45). In addition, the adjusting device (50) is adapted to the
  • Moisture entry e.g., by dosing a
  • Liquid Liquid
  • dehumidification e.g., by adjusting the temperature or irradiation
  • the figure shows several possible arrangements of a detection area (5) or a detection device (41).
  • the properties of a Fiber stream behind, in or on a bale breaker (21), behind, in or at a fiber mixing device (22) or at any other fiber processing device (20) are detected.
  • the properties are detected in a detection area (5), which in
  • Production direction (4) is arranged behind an adjusting device (50).
  • the properties can advantageously in one
  • Control loop (“feedback control") are regulated.
  • the properties can also be controlled.
  • the sensed properties of the nonwoven precursor can also be used for other purposes, such as predictive maintenance and / or damage detection.
  • the detected properties are analyzed automatically.
  • the frequency behavior of the properties is preferably analyzed.
  • a Fourier transformation can be applied to the detected properties.
  • the frequencies of the detected characteristics may be at frequencies
  • the fleece precursor is a surface and / or
  • the width of the nonwoven precursor is preferably 1 m to 4 m.
  • the monitoring device comprises a
  • Radioactive radiation sensors or X-ray sensors can be used.
  • isotope backscatter sensors are also suitable. Radioactive radiation of a krypton isotope is particularly suitable for detecting the properties of a nonwoven precursor.
  • radioactive radiation requires special radiation protection measures. After expiration of a
  • Radiation source usually be exchanged.
  • This embodiment has the advantage that the
  • Monitoring device (40) on existing systems can be used.
  • the product quality can be used.
  • Monitoring device (40) be designed as a distributed system.
  • the senor (40) be designed as a distributed system.
  • the senor (40) be designed as a distributed system.
  • Data processing unit can be implemented in particular in a system control.
  • Fiber mixing ratio and / or the fiber opening degree, with a detection device (41) in one Detection area (5) are recorded and the
  • Detection results are processed in a data processing unit (42), wherein the nonwoven precursor (3) in the detection area (5) is a still unprocessed batt and the properties of the nonwoven preform (3) across the width of the nonwoven preform (3) transversely to
  • Production direction (4) are recorded.
  • Monitoring method characterized in that the detection area (5) directly at or close to the outlet of the nonwoven Vor.s (3) from a pile forming device (30), in particular a carding, carding, Airlay- or spunbonding machine, is located.
  • nonwoven precursor (3) is a single or multi-layered
  • Nonwoven precursor (3) along and / or across
  • Production direction (4) in particular with a movable sensor (410) or a fixed one
  • Monitoring method characterized in that local properties of the nonwoven precursor (3) at at least one local detection location (5i), in particular with a location information, are detected.
  • Monitoring method characterized in that a frequency analysis, in particular based on a Fourier transform, the detection results is performed.
  • Fleece preproduction plant (10) is determined, in particular by comparing a periodic movement of the component and the frequency analysis of the
  • a fiber preparation device (20) and / or a pile forming device (30) are generated.
  • a property of the nonwoven Vor.s (3) in particular a local property or the spatial and / or areal distribution of a property across and / or longitudinal to the production direction (4), regulated or controlled.
  • a process parameter in particular a fiber volume flow, the speed of a fiber conveyor, the position of a fiber tail, or the air conditioning, at the web preprocessing plant (10), in particular at a Fiber preparation device (20) and / or a
  • Property of the nonwoven precursor (3) is specifically influenced, in particular property deviations
  • Nonwoven precursor (3) is detected.
  • Surveillance method characterized in that the fiber orientation in the nonwoven precursor (3) by setting a pile forming device (30), in particular a carding or aerodynamic card (airlay), is selectively influenced.
  • Monitoring method characterized in that the mixing ratio of the fiber constituents in the nonwoven precursor (3) by adjusting a bale breaker (21), a Metering device, a fiber opening device (23) or a fiber mixing device (22) is set specifically.
  • Monitoring method characterized in that the opening degree of the fibers in the nonwoven precursor (3) by adjusting a fiber opening device (41) or a pile forming device (30) is selectively influenced.
  • Spunbonding device or an air conditioner is specifically influenced.
  • Nonwoven manufacturing plant characterized in that the monitoring device (40) comprises a detection device (41) for detecting properties of a
  • Nonwoven precursor (3) in a detection area (5) and a data processing unit (42), wherein the detection device (41) comprises one or more sensors (410), in particular an infrared sensor, radioactive radiation sensor and / or X-ray sensor, wherein the detection device (41) is adapted to provide properties of an unprocessed nonwoven precursor (3) across the width of the nonwoven precursor (3) transversely to the detection device (41) comprises one or more sensors (410), in particular an infrared sensor, radioactive radiation sensor and / or X-ray sensor, wherein the detection device (41) is adapted to provide properties of an unprocessed nonwoven precursor (3) across the width of the nonwoven precursor (3) transversely to the
  • Monitoring device (40) characterized in that the monitoring device (40) designed for this purpose is, properties of a nonwoven precursor (3) too
  • Monitoring device (40) characterized in that the monitoring device (40) is adapted to Floreigenticianen in a detection area (5) directly or close to the outlet of the nonwoven Vor.s (3) from a pile forming device (30), in particular one
  • Monitoring device (40) characterized in that the monitoring device (40) is adapted to the properties of the nonwoven Vor.s (3) in a
  • Detecting area (5) which lies within or on a pile forming device (30), in particular a card (32).
  • Monitoring device (40) characterized in that the monitoring device (40) is adapted to Floreigenticianen in a detection range (5) in
  • a structure-changing further processing device (90), in particular a first nonwoven layer (91) and / or a first consolidation machine (92) along the
  • Monitoring device (40) characterized in that a sensor (410) of the detection device (41) along and / or transversely to the production direction (4) via the
  • Nonwoven precursor (3) is movable.
  • Monitoring device (40) characterized in that the monitoring device (40) is designed to carry out a monitoring method according to one of the preceding claims.
  • Monitoring device (40) characterized in that the monitoring device (40) is adapted to generate setting instructions (45) for a web preprocessing plant (10), in particular a fiber processing device (20) and / or a pile forming device (30).
  • Vliesvor s (3) characterized in that the nonwoven prefabrication system (20) a
  • Nonwoven prefabrication system (10) characterized in that a fiber processing device (20) and / or a pile forming device (30) by the
  • Monitoring device (40) are adjustable to selectively affect properties of a nonwoven Vorêts (3), in particular to regulate.
  • Nonwoven manufacturing plant for producing a
  • Nonwoven fabric (7) characterized in that the
  • Nonwoven manufacturing plant (15) one Fleece preproduction plant (10) according to one of
  • a structure-changing further processing device 90, in particular a nonwoven applicator (91) and / or a nonwoven setting device (92), wherein the detection region (5) of the monitoring device (40) between a pile forming device (30) of
  • Further processing device (90) is located.
  • Nonwoven prefabrication plant Nonwoven pre-production plant
  • Air conditioning area Air-conditioned zone Nonwoven manufacturing plant Nonwoven fabrication plant

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Nonwoven Fabrics (AREA)

Abstract

L'invention concerne une technique de surveillance pour un processus de fabrication d'une étoffe non tissée (7) composée de fibres (1, 2) dans une installation de fabrication de non-tissé (15), caractérisée en ce que l'humidité et/ou la charge électrique des fibres (1, 2) ou d'un non-tissé semi-fini (3) est détectée avec un dispositif de détection (41) dans une zone de détection (5) et les résultats de la détection sont traités dans une unité de traitement de données (42). Une instruction de commande (45) pour au moins un dispositif de commande (50) de l'installation de fabrication de non-tissé (15) est générée. Le dispositif de commande (50) est conçu pour régler l'humidité des fibres (1, 2) et/ou l'humidité du non-tissé semi-fini (3) et/ou les conditions environnantes dans au moins une partie de l'installation de fabrication de non-tissé semi-fini (10).
EP18814488.5A 2017-11-14 2018-11-14 Technique de surveillance pour installations de fabrication de non-tissé Pending EP3710624A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017126753.0A DE102017126753A1 (de) 2017-11-14 2017-11-14 Überwachungstechnik für Vliesfabrikationsanlagen
PCT/EP2018/081189 WO2019096823A1 (fr) 2017-11-14 2018-11-14 Technique de surveillance pour installations de fabrication de non-tissé

Publications (1)

Publication Number Publication Date
EP3710624A1 true EP3710624A1 (fr) 2020-09-23

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EP18814487.7A Pending EP3710623A1 (fr) 2017-11-14 2018-11-14 Technique de surveillance pour installations de fabrication de non-tissé

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US (2) US20200362479A1 (fr)
EP (2) EP3710624A1 (fr)
CN (2) CN111344446A (fr)
DE (1) DE102017126753A1 (fr)
WO (2) WO2019096823A1 (fr)

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CN113373598A (zh) * 2021-06-08 2021-09-10 湖北省宇涛特种纤维股份有限公司 一种轻质非织造布热粘合网格布机及制造网格布方法

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Publication number Publication date
CN111344446A (zh) 2020-06-26
DE102017126753A1 (de) 2019-05-29
US20200362479A1 (en) 2020-11-19
CN111356799A (zh) 2020-06-30
WO2019096818A1 (fr) 2019-05-23
WO2019096823A1 (fr) 2019-05-23
CN111356799B (zh) 2023-03-28
US20200299870A1 (en) 2020-09-24
EP3710623A1 (fr) 2020-09-23

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