CN112166019A - Apparatus and method for heat treatment of moving web - Google Patents

Apparatus and method for heat treatment of moving web Download PDF

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Publication number
CN112166019A
CN112166019A CN201980034609.1A CN201980034609A CN112166019A CN 112166019 A CN112166019 A CN 112166019A CN 201980034609 A CN201980034609 A CN 201980034609A CN 112166019 A CN112166019 A CN 112166019A
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China
Prior art keywords
air
chamber
hot air
channel
air flow
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Pending
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CN201980034609.1A
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Chinese (zh)
Inventor
悉达尔斯·罗希亚
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Lohia Corp Ltd
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Lohia Corp Ltd
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Publication of CN112166019A publication Critical patent/CN112166019A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
    • B29C71/02—Thermal after-treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B13/00—Conditioning or physical treatment of the material to be shaped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B13/00—Conditioning or physical treatment of the material to be shaped
    • B29B13/02—Conditioning or physical treatment of the material to be shaped by heating
    • B29B13/023—Half-products, e.g. films, plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M23/00—Treatment of fibres, threads, yarns, fabrics or fibrous goods made from such materials, characterised by the process
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B13/00—Conditioning or physical treatment of the material to be shaped
    • B29B13/02—Conditioning or physical treatment of the material to be shaped by heating
    • B29B13/023—Half-products, e.g. films, plates
    • B29B2013/026—Obtaining a uniform temperature over the whole surface of films or tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/04—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam
    • B29C35/045—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam using gas or flames
    • B29C2035/046—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam using gas or flames dried air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
    • B29C71/02—Thermal after-treatment
    • B29C2071/022—Annealing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/04—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam
    • B29C35/06—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam for articles of indefinite length

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Tunnel Furnaces (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)

Abstract

The present invention relates to a hot air circulation chamber with an air flow control system for the manufacture of thermoplastic products such as monofilaments, plastic mesh tapes, narrow film tapes, multifilaments. Conventional systems do not allow for control of the temperature and airflow within the hot air channel/chamber to achieve uniformity. Due to the increased production speeds and stringent product requirements, it is necessary to increase the uniformity of the air flow and the temperature accuracy in hot air furnaces. The invention discloses a device (1) provided with an air flow path providing several fans (7), heater (6) position optimization and increasing the number of air flow regulators (8) with control levers (9). The moving web (5) enters a hot air channel (4) of the device formed between the upper chamber (2) and the lower chamber (3). The entry point of the moving belt into the hot air channel (4) is the belt entrance (5A). After heat treatment, the moving web (5) exits the apparatus through a web outlet (5B).

Description

Apparatus and method for heat treatment of moving web
Technical Field
The present invention relates to the manufacture of thermoplastic products like monofilaments, plastic webbing (web strip), narrow film tapes, multifilament yarns, and in particular to a hot air circulation chamber with an air flow control system.
Background
Various thermoplastic objects with very high aspect ratios are subjected to heat treatment during manufacture using well known devices like hot plates or hot air ovens. These thermoplastic objects may be in the form of monofilaments, narrow mesh tapes, multifilaments and other plastic meshes.
A typical apparatus for thermal treatment of moving web is a conventional hot air furnace (see fig. 1) consisting of an upper chamber and a lower chamber connected to each other by a hinge along one edge of the chambers. Each chamber has an insulation within which a fan with the desired spiral is mounted. An airflow directing housing (not shown) forms the suction inlet and outlet of each fan. At the closure of the two chambers, a hot air channel is formed (at the interface of the chambers). The hot air channel receives hot air from the chamber through an inlet port provided in the chamber at one end (inlet end) of the channel. Air from the hot air channel exits the channel and re-enters the chamber through an outlet port provided in the chamber at the other end (outlet end) of the channel. On the suction inlet housing path (not shown) a set of heaters is mounted to effect suction of hot air of a desired temperature by the fan. The hot air having been blown by the fan is guided through the air flow guide passage and the air flow control lever. The separate damper position controls the hot air inflow at the hot air furnace inlet section.
As can be seen from the schematic diagram given of the conventional system, it is indeed not possible to control the temperature and airflow within the hot air tunnel/chamber to achieve uniformity across the tunnel. Further, it should be noted that the introduction of the fast moving continuous web disturbs the air flow in the hot air channel from the inlet end to the outlet end of the chamber. It should also be noted that in conventional ovens, there is no provision for airflow control at multiple locations, nor temperature monitoring at multiple points of the hot air path. As a result, the air flow and temperature conditions throughout the hot air tunnel may be non-uniform and may adversely affect the quality of the stretched tape.
The hot air channel is arranged to assist the stretching of the strip/band of thermoplastic material from which the fabric is made. During the stretching process, the mesh belt pack passes through a hot air tunnel to achieve the desired mechanical properties of the stretched belt. As the field of end product applications develops, increasingly stringent requirements are placed on product uniformity across the width of the hot air channel and along the length of the end product. This generally translates into a need for better control of process parameters during the manufacturing process. Further, as production speeds increase and stringent end product requirements increase, there is a need to improve airflow uniformity and temperature accuracy within hot air furnaces.
Disclosure of Invention
The purpose of the invention is as follows:
a primary object of the present invention is to provide an apparatus and a method for heat treatment of a moving mesh belt to make the heat treatment uniform in a hot air passage forming a part of the apparatus.
It is another object of the present invention to ensure that the air flow remains uniform across the width and length of the hot air channel.
It is a further object to provide a uniform temperature in the hot air channel by precise control.
A further object is to provide the ability to independently control the flow of heated air within the chamber ducts.
A further object is to provide the ability to separately control the airflow within different portions of the hot air channel.
Summary of the invention:
the present invention relates to a hot air circulation chamber with an air flow control system for the manufacture of thermoplastic products such as monofilaments, plastic mesh tapes, narrow film tapes, multifilaments. Conventional systems do not allow for control of the temperature and airflow within the hot air channel/chamber to achieve uniformity. Due to the increased production speeds and stringent product requirements, it is necessary to increase the uniformity of the air flow and the temperature accuracy in hot air furnaces. The invention discloses a device (1) provided with an air flow path providing several fans (7), heater (6) position optimization and increasing the number of air flow regulators (8) with control levers (9).
The moving web (5) enters a hot air channel (4) of the device formed between the upper chamber (2) and the lower chamber (3). The entry point of the moving belt into the hot air channel (4) is the belt entrance (5A). After heat treatment, the moving web (5) exits the apparatus through a web outlet (5B).
Drawings
Fig. 1 and 1A show a conventional apparatus for heat treatment of a moving web;
FIG. 2 shows the device of the present invention in its longitudinal view;
FIG. 2A shows the device of the present invention in its cross-sectional view;
figure 3 shows a cross-sectional view of an embodiment of the apparatus of the present invention having multiple conduits in the upper and lower chambers.
List of parts:
1-hot air furnace 6-heater
2-upper chamber 7-fan
3-lower chamber 8-air flow regulator
4-Hot air channel 9-Bar (or control Bar)
5-mesh Belt 10-air Inlet
5A-mesh belt inlet 11-air outlet
5B-mesh belt outlet 12-hinge
Detailed Description
As previously discussed, the conventional hot air oven has an upper chamber and a lower chamber, as shown in fig. 1. Further, each chamber has an insulator in which a fan having a desired spiral is installed. An airflow directing housing (not shown) forms the suction inlet and outlet of each fan. On the suction inlet housing path (not shown), a set of heaters is installed to achieve suction of hot air of a desired temperature by a fan. The hot air having been blown by the fan is guided through the air flow guide passage and the air flow control lever. The separate damper position controls the hot air inflow at the hot air furnace inlet section.
As previously discussed, conventional ovens (see fig. 1 and 1A) do not allow for uniformity control of temperature and airflow generally within the hot air path. As we have noted, the introduction of the fast moving continuous web disturbs the air flow in the hot air channel from the inlet end to the outlet end of the chamber. It is noted that in conventional ovens, there is no provision for airflow control at multiple locations, nor temperature monitoring at multiple points of the hot air path. As a result, the air flow and temperature conditions throughout the hot air tunnel may be non-uniform and may adversely affect the quality of the stretched tape.
In order to solve the above-mentioned problems of the conventional hot air furnace, the present invention discloses a device (1) (or hot air furnace) for heat treatment of a moving mesh belt (5). As shown in fig. 2, the device (1) is provided with an air flow path with several fans (7) provided, an optimized heater (6) position and an increased number of air flow regulators (8) or control points provided with rods (9). The air flow regulator has a mechanism, such as a baffle or fin, the angle of which can be adjusted using a lever (9) to regulate the air flow through the regulator (8).
In one aspect of the invention, a single lever can control more than one regulator (8).
The moving web (5) enters a hot air channel (4) of the device formed between the upper and lower chambers. The entry point of the moving belt into the hot air channel (4) is the belt entrance (5A). After heat treatment, the moving web (5) exits the apparatus through a web outlet (5B).
As shown in fig. 3, the thermal device of the present invention, the upper chamber (2) and the lower chamber (3), is further divided into a plurality of ducts (2a and 3a) according to the overall working width of the hot air furnace (1), as a preferred embodiment. The upper and lower chambers may be divided into a plurality of ducts. At least one set of a fan (7) and a heater (6) is provided in each of the ducts (2a and 3 a). However, the upper chamber (1) and the lower chamber (2) are of similar construction, preferably but not necessarily having the same number of ducts (2a and 3 a). Each duct has a fan (7) to blow air, a group of heaters (6) and a single air flow regulator (8) leading to the hot air channel.
According to the invention, each duct (2a and 3a) has a specially designed air flow path with a separate fan/blower (7), with a set of heaters (6) arranged adjacent to the blower wheel, thereby minimizing heat losses. Further, the hot air from the upper and lower chambers (2, 3) is discharged into the channel (4) through more than one air outlet (10) arranged sequentially along the length adjacent to the entrance area of the web of the device. Furthermore, an air inlet (11) is provided at the web outlet (5B) end of each compartment (2, 3) to direct circulating hot air from the tunnel back into the duct (2a, 3 a). Further, each air outlet (10) arranged to send hot air from the chamber/duct into the hot air channel (4) has a separate flow regulator (8) provided with a rod (9) providing more air flow control according to the design requirements of the device.
In order to facilitate the opening of the hot air oven and in order for the grouped or individual wire strips (5) to pass through the hot air channel (4), the upper chamber (2) and the lower chamber (3) are connected at either longitudinal side by a hinge system, preferably operated by pneumatic means. During operation of the hot air furnace, the upper chamber (2) extends downwardly above the lower chamber (3) and forms a hot air channel (4). The hot air duct (4) is thus closed or sealed at its sides (in the direction of the moving belt (5)). The hot air channel (4) extends between an air outlet (10) and an air inlet (11) arranged at respective opposite ends of the hot air channel (4).
As the hot air introduced into the passageway (4) travels through the length of the passageway from the web inlet (5A) toward the web outlet (5B), it loses heat and cools down. Once the cooled air is reintroduced from the channel (4) back into the chamber (2, 3), it is heated by the heater/fan blower assembly. The heated air travels along the length of the chamber (2, 3) towards the web inlet end (5A) where it is again introduced into the channel (4) through the air inlet (11). The heating and cooling cycle of the air thus continues.
The air outlet (10) end provides more than one air flow regulator (8) for each duct (2a, 3a) or chamber (2, 3), with the aid of which the air flow entering the hot air channel (4) through a separate outlet (10) port, provided at the air inlet end of the hot air channel (4), is regulated. The air flow lever (9) can be adjusted by means of at least one operating position, whereby the air quantity passing through the air flow regulator (8) can be adjusted. The required amount/rate of air flow into the hot air channel (4) is controlled by the adjustable positioning of an air flow lever (9) provided in the air flow regulator (8). The individual air flow regulator (8) has several position settings that are adjustable using a rod (9) that enables process repeatability.
Further, since the heaters (6) within the ducts/chambers (2, 3) are arranged in close proximity to the respective fans (7), a more precise temperature control is achieved. The plurality of air ducts and the plurality of air flow regulators ensure pressure equalization and a more uniform air flow within the hot air channel. The overall insulation of each chamber further ensures efficient energy utilization.
In a preferred embodiment of the invention, sensors (not shown) are provided for monitoring the temperature at various points of the hot air channel (4). The temperature and velocity of the air flow entering the channel (4) through the outlet port (10) depends on the denier and velocity of the belt, and the final product requirements. The provision of multiple outlet ports (10) is an important feature of the present invention, as this may be highly dependent on the end user requirements.
In another preferred embodiment, an airflow sensor (not shown) is provided for sensing and measuring the airflow velocity within the hot air channel. The position of the air flow regulator (8) is adjusted in dependence on data obtained from the temperature and air flow sensors to control the air flow through the regulator (8).
The present invention also provides a method of heat treating a moving web using the apparatus disclosed herein. The method comprises the step of adjusting the temperature and velocity of the air within the ducts (2a, 3a) of the chamber (2, 3) in dependence on known parameters such as the titer of the strip and the speed at which it travels through the channel (4) so that air of a desired temperature and velocity is released from the chamber into the hot air channel (4) through the outlet port (10).
From the foregoing discussion, it should be apparent that there are several embodiments of the present invention.
A preferred embodiment discloses a device for the heat treatment of a moving web, said device comprising an upper chamber (2) and a lower chamber (3) with a passageway (4) between the two said chambers to carry hot air from a web inlet (5A) to a web outlet (5B), during which travel said hot air cools down and said moving web (5) travels in a longitudinal direction through the passageway (4), characterized in that each said chamber (2, 3) has at least one separate air outlet (10) for providing said hot air from said chamber (2, 3) into said passageway (4) and a separate air inlet (11) for bringing the air cooled down after traveling through said passageway (4) back into said chamber (2, 3), and wherein each of said inlets (10) is provided with at least one individual air flow regulator (8) having a lever (9), further wherein each of said chambers (2, 3) has at least one heater (6) and fan (7) adjacent to said web outlet (5B) for heating the cooled air for further circulation.
In one aspect of the invention, a single lever (9) may control more than one air flow regulator (8).
In another aspect of the invention, the chambers (2, 3) are divided into separate ducts (2a, 3 a).
In a further aspect of the invention, each of said ducts (2a, 3a) is provided with at least one heater (6), at least one fan (7) and at least one flow regulator (8) having an operating lever (9).
In a further aspect of the invention, the number of ducts (2a) in the upper chamber (2) and the number of ducts (3a) in the lower chamber (3) are the same.
In another aspect of the invention, the fan (7) and the heater (6) are mounted adjacent to each other.
In yet another aspect of the invention, there may be more than one air outlet (10) for each of said chambers (2, 3) or ducts (2a, 3 a).
In yet another aspect of the invention, the upper chamber (2) and the lower chamber (3) are connected by at least one hinge (12) at either longitudinal side of the device.
In a further aspect of the invention, the operating lever (9) is adjustable with at least one operating position, whereby the velocity (or speed) of the air passing through the air flow regulator (8) can be adjusted.
In a further aspect of the invention, the fan (7) and heater (6) are located close to the air inlet (11) end of the chamber (2, 3).
In another aspect of the invention, the channel (4) is provided with a temperature measuring and monitoring sensor. The channel (4) is also provided with an air flow speed measuring and monitoring sensor.
In a further aspect of the invention, the temperature and velocity of the air released into the tunnel (4) is controlled based on the denier and velocity of the moving belt (5) and the final product requirements.
In another aspect of the invention, a process for the treatment of a moving web (5) is disclosed, comprising the steps of:
providing a device according to any of claims 1-12, and
the air in the chambers (2, 3) is heated to a desired temperature,
-releasing an air flow of a desired speed from the chamber (2, 3) into the channel (4) through the air flow regulator (8) by means of a control rod (9).
The following examples illustrate ways in which the invention may be used. A 1000 denier tape or film is passed through an oven made according to the present invention. The upper compartment of the furnace comprises two ducts and the lower compartment comprises two ducts. The set temperature of the furnace was 160 ℃. The belt was run at a speed of 8 m/s. Within each duct, five separate air flow regulators were used to set the air flow rate to 10-11 m/s. The temperature of the strip is measured at randomly selected locations along its length at a plurality of locations across the width of the furnace. The temperature of the tape was found to vary between-0.25% and 1.88% from the set temperature. This is much lower than the 0.44% to 3.6% variation experienced with conventional furnaces. This represents a near 100% reduction in temperature variation compared to belts processed using conventional furnaces.
While the above description contains many specifics, these should not be construed as limitations on the scope of the invention, but rather as exemplifications of preferred embodiments thereof. It will be appreciated that modifications and variations are possible in light of the above disclosure without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention should be determined not by the embodiments illustrated, but by the appended claims and their legal equivalents.

Claims (14)

1. Device for the thermal treatment of a moving web, said device comprising an upper chamber (2) and a lower chamber (3), with a channel (4) between the two chambers, to carry hot air from a web inlet (5A) to a web outlet (5B), during which travel said hot air cools down, and through which channel (4) said moving web (5) travels in a longitudinal direction, characterized in that each of said chambers (2, 3) has at least one separate air outlet (10) for providing said hot air from said chamber (2, 3) into said channel (4) and a separate air inlet (11) for bringing the cooled down air after traveling through said channel (4) back into said chamber (2, 3), and wherein each of said inlets (10) is provided with at least one separate air flow regulation with an operating lever (9) -a device (8), further wherein each chamber (2, 3) has at least one heater (6) and fan (7) near the web outlet (5B) for heating the cooled air for further circulation.
2. The device according to claim 1, wherein the chambers (2, 3) are divided into separate ducts (2a, 3 a).
3. The device according to claim 2, wherein each of said ducts (2a, 3a) is provided with at least one heater (6), at least one fan (7) and at least one flow regulator (8) having an operating lever (9).
4. The device according to claims 2 and 3, wherein the number of ducts (2a) in the upper chamber (2) and the number of ducts (3a) in the lower chamber (3) are the same.
5. The device according to claims 1-4, wherein the fan (7) and the heater (6) are mounted adjacent to each other.
6. Device according to claims 1-5, wherein there can be more than one air outlet (10) for each of the chambers (2, 3) or ducts (2a, 3 a).
7. The device according to claims 1-6, wherein the upper and lower compartments (3) are connected by at least one hinge (12) at either longitudinal side of the device.
8. Device according to claims 1-7, wherein the operating lever (9) is adjustable with at least one operating position, whereby the amount of air passing through the air flow regulator (8) can be adjusted.
9. The device according to claims 1-8, wherein the fan (7) and the heater (6) are located close to the air inlet (11) end of the chamber (2, 3).
10. The device according to claims 1-9, wherein the channel (4) is provided with a temperature measuring and monitoring sensor.
11. The device according to claims 1-9, wherein the channel (4) is provided with an air flow measuring and monitoring sensor.
12. The apparatus according to claims 1-11, wherein the temperature and velocity of the air released into the channel (4) is controlled based on the titer and velocity of the moving belt (5) and the final product requirements.
13. A device according to claims 1-12, wherein any single lever (9) controls more than one air flow regulator (8).
14. A process for the treatment of a moving web (5), said process comprising the steps of:
providing a device according to any of claims 1-12, and
the air in the chambers (2, 3) is heated to a desired temperature,
-releasing an air flow of a desired speed from the chamber (2, 3) into the channel (4) through the air flow regulator (8) by means of a control rod (9).
CN201980034609.1A 2018-11-19 2019-11-13 Apparatus and method for heat treatment of moving web Pending CN112166019A (en)

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IN201811040635 2018-11-19
IN201811040635 2018-11-19
PCT/IB2019/059725 WO2020104894A1 (en) 2018-11-19 2019-11-13 Apparatus and method for thermal treatment of moving web strips

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MX (1) MX2020011220A (en)
PE (1) PE20210093A1 (en)
PH (1) PH12020552169A1 (en)
RU (1) RU2770736C1 (en)
TW (1) TWI744722B (en)
UA (1) UA126611C2 (en)
WO (1) WO2020104894A1 (en)
ZA (1) ZA202006246B (en)

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