JPH06509529A - Textile product manufacturing method and manufacturing equipment - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Textile product manufacturing method and manufacturing equipment The invention is set out in the preamble of appended claim 10 for the manufacture of textile products. and, furthermore, as stated in the preamble of claim 1 for the manufacture of textile products. It is about the method.

International Publication No. W○　3359 discloses that when melting and curing, the fibers The main fibers are twisted together with the heat-bondable binder fibers to bond the main fibers. Discloses a method for producing a moldable mat from. This mat is It is formed using a dry method on a movable belt using a so-called air flow. A stream of air transports the fibers onto a belt, passes through a mat, and then passes through a furnace. The process of gluing the mat thus formed is followed by a process of bonding the mat with thermoplastic Adhesion for softening the binder fibers made of tick material and bonding the main fibers to each other. have a temperature high enough to lead to a sexual state6 The method described above is based on mats using non-hazardous binding materials in view of work and environmental safety. Not only is it possible to produce can be used to reshape the mat, whereby the mat is reshaped and then reshaped. Heat is used to guide the fibers to harden the mat in a solid shape. By using It can be used to build.

The use of real fibers and cellulose fibers from plant-based ponds for the production of textile products. This means that it is available in abundance, is comfortable to handle as a material, and does not pose a risk to health. Not attractive if recyclable natural materials are a concern. these Fibrous mats made from fibers are also effective insulators. However, this This is a characteristic that causes problems in the manufacture of the product if the aforementioned process should be used. becomes. When processing the product in the furnace, a mat-shaped fabric is used to bond the fibers. It is necessary to make the furnace quite long so that heat can pass through the inside of the product. kana If the objective is to produce a product with a thickness of In order to properly adhere the mat even in the central part, it is necessary to make an excessively long furnace. It will be important.

Alternatively, it is possible to significantly increase the temperature, but this includes A spherical shape where the thermoplastic fibers cannot be melted or the fibers cannot be bonded. Dissolves completely as drops, causing the mat to fall apart and damage the surface structure of the product guide. It is clear that the above process is not feasible in terms of energy consumption. be.

The purpose of the present invention is to eliminate the above-mentioned disadvantages and to create a very thick fiber with good insulation ability. To provide a device and method that can utilize wood fibers to make quality mats. Is Rukoto. To achieve this objective, the method of the invention first of all uses the attached It is characterized by what is stated in the features of claim 1. plant-based seeds heating thermally bondable binder fibers twisted with lurose fibers; The temperature of the air stream is already high enough in the air stream that transports the fibers. If the fibers are brought into a bonded state by The heat-bondable binder fibers, which do not generate The main fibers are glued together. In fact, this allows New fibers to be bonded are placed on top of the pre-formed mat at the mat manufacturing site. It is basically possible to deposit just the desired amount, so even very thick mats can be Even manufacturing becomes easier.

The attached dependent claims 2 to 9 disclose other preferred embodiments of the method of the invention.

For example, the mat is still in a moldable state even after it has been manufactured, so it Compression can be achieved to the desired degree by application of flow. In subsequent processing , considering the use of the product to the maximum extent that does not harm health, Suitably molded into a thermal material.

The device according to the invention also comprises: characterized.

The mat is formed in an air chamber on the transfer platform; The bonding material fibers are applied to the air chamber to an already adhesive state. There is a ventilation duct with a heater for heating. Therefore, this device Does not require long furnaces for bonding by heat.

The attached dependent claims 11 to 14 disclose other preferred implementations of the device according to the invention. Examples are disclosed.

The invention will be explained in detail in the following description with reference to the accompanying drawings.

FIG. 1 is a side sectional view of a mat-forming aggregate included in the apparatus of the present invention, FIG. 2 is a cross-sectional view of the assembly shown in FIG. Figure 3 shows a cross-sectional view of an example of the final product, and Figure 4 shows the assembly shown in Figure 1. A close-up of the details involved, FIG. 5 schematically shows the operating principle for the overall device.

FIG. 1 shows a mat-forming assembly including a fiber supply mechanism 11. FIG. this supply The mechanism consists of a vertical device 1 known per se for guiding the fibers by means of a flow of air. 1a, t or the inlet end is equipped with pretreatment means known per se for the fibers. horizontal conveyor llb. of the supply mechanism 11 The bottom end is equipped with a supply roll 2 having studs in a dense pattern on its surface. It is. Opposed to the surface of the supply roll 2 is water at the end of the first air passage 3. It is a flat narrow slit orifice. Under this slit orifice, a second air An inlet for the passage 4 is arranged between its bottom wall and the surface of the supply roll 2. A constriction point is formed. Downstream of this constriction point, it spreads diagonally downward. There is an air chamber 6, the lower end of which is connected to an air permeable forming platform. It is blocked by [mu]. On the opposite side of the forming platform 1 there is a collection chamber 1o.

The forming platform 1 is formed from a seamless belt and extends around the cylinder. and is installed across the chamber 6. Downstream side of chamber 6 , the forming platform traverses the second air chamber 8 and the second air chamber 8 - Forms the bottom surface of the chamber.

At the inlet end of the first air passage 3, a uniform air flow is created across the entire width of the duct 6. Mutually parallel fans 12 are provided for this purpose. These fans 12 are It is indicated by dashed lines in FIG. Duct serving as the inlet end of the second air passage 4 The second air passage 4 is also equipped with a fan 13, which is connected to the heater 7. Therefore, it is installed so that heated air can be blown into it. Heater 7 is For example, a conventional gas burner can be used.

The mat forming process of this device consists of cellulose fibers and a bonding material that can be bonded by heat. A mixture of fibers is fed towards the feed roll 2 by a feed mechanism.

FIG. 4 shows the subsequent mat forming step in more detail. The rotating supply roll 2 is As the outermost layer of the feed roll to pick up and further transport the fibers It includes the stud 2a shown in FIG. Then, in the direction of rotation of the supply roll , the fibers are located at the end of the first air passage 3 and extend across the width of the roll. The operating range of the horizontal slit orifice 3a is reached. slit orifice A high-speed air flow A1 emitted from the feed roll 2 releases the fibers from the supply roll 2. On the other hand, a second The fibers are conveyed across the inlet 4a of the air vent W@4. After passing the constriction point, the fibers The fibers are completely released from the supply roll 2, have a cross section extending in the direction of travel of the fibers, and into an air chamber 6 whose width corresponds to the width of the mat to be produced.

The opening or widening of this chamber is in the axial direction of the supply roll 2, i.e. The horizontally extending front and rear walls of the mat are separated from each other. achieved.

The second air passage 4 sends air into the inlet 4a as an air flow A2. used for. The temperature of this second air flow A2 is The temperature of the first air flow A1 is higher than that of the first air flow A1. By constriction point 2b As a result of the jetting effect caused by this, this air flow A2 merges into the air flow Al. and an air stream A which mixes with this and carries the fibers to the outlet end of the air chamber 6. Become. The supply rate of this higher temperature air flow A2 is As the temperature of the air flow A that transports the fibers softens the surface of the thermoplastic fibers, mixed with cellulose fibers until it is possible to bond the fibers within the mat In order to cause sufficient changes in the surface of the binder fibers that can be bonded by heat, make it a thing. These binder fibers travel naked through the air stream, so , is considerably affected by air.

The outlet or rear end of the air chamber 6 is blocked by the forming platform 1. The forming platform 1 crosses the chamber and the woven wire It may be of felt or similar air permeable flat material. con At the bare inlet, i.e. downstream of the front wall of the air chamber, fibers hitting the bottom quickly Crab glued to create a mat, the thickness of which increases continuously, exactly the same Mats glued to the mats are stacked on top of them. The resulting mat is similar to the real Since the rollers are porous, the air flow A flows through the mat and the forming plate underneath. Pass through the rat platform 1 and into the collection chamber 10 on the opposite side.

Figure 1 shows the mat's next step. The movement direction of the formation platform A backing cylinder 14 is installed downstream of the member 6. The distance of the cylinder from the forming platform 1 is adjustable. This bar The packing cylinder is installed in the transport direction of the forming platform 1 from the air chamber. This prevents air from passing through from the top of the mat. This backing cylinder Downstream of said forming platform 1 is placed on forming platform 1. Transport the mat into the second air chamber 8. The upper end of the air chamber 8 contains air. A passage 9 is provided. The second air chamber 8 is supplied from the air passage 9 in the direction of the air flow, widened or open towards the forming platform 1. located at the entrance and exit sides of the forming platform. The chamber walls are moving away from each other. For example, a The pressure of air flow B is adjusted to the desired value to give the desired value for the density of the mat. can be applied to further compress the mat to a degree of

Therefore, the airflow is directed towards the porous mat and the supporting forming plate below. via the rat platform 1 into the second collection chamber 15 located on the opposite side. . Therefore, the air flow B supplied into the second air chamber 8 is For example, thermoplastic binder fibers are brought to a desired density so that the deformation is permanent. An adhesive softening material that allows the mat to be deformed to shape or mold the mat. The temperature is such that the condition remains constant. Downstream of the second chamber 8, the adhesive In order to transport the finished mat-shaped product first for further processing, the mat is from the production platform 1 onto the conveyor 16.

Particularly if a product of low density is desired, the addition carried out by the second air chamber 8 Additional processing can be omitted. The density of the product progresses inside the air chamber 6 It is also possible to control the flow rate of air flow A already at the stage of the mat formation operation. , the flow rate dictates the force directed by the fibers into the mat composition.

FIG. 5 schematically shows one possible arrangement for air flow in the present invention. There is. The air stream reaches a mat-forming air stream or collection chamber 10 Flow A is circulated into the first air passage 3 by means of a fan 12 . child During this time, the air flow is discharged from the air passage 3 through the slit orifice 3a. The temperature of the first air flow A1 is such that the binder fibers can be brought into a bonded state. It has time to cool down to a level below. Therefore, this air flow A 1 only serves to release the fibers from the supply roll 2.

However, this can be used to provide preheating, thereby allowing air passages 4 There is no need for the air flow A2 discharged from the air to be at a particularly high temperature. The air passage 4 is It branches out for an air passage 9 connected to the second air chamber 8, and this air passage A part of the heated air flow A1 sent out by the fan by the It is extracted as air stream B for further processing of the cut. This also handles to ensure that the temperature of said air flow B is sufficiently high in Since the air passage originates from the air passage 4 which only contains a flow of heated air, Its temperature is actually higher than the temperature of the air chamber 6, however, This air flows into the cellulose fibers, which act as heat insulators, in the form of binder fibers. surrounded by excessively large changes, such as the melting of thermoplastic fibers. On the other hand, the air flow rate per unit area is due to the size of the chamber 8. remains very low.

Air flow admitted to the second collection chamber 15 on the other side of the forming platform 1 B circulates and returns to the heater 7 via the air passage 18. Chamber 8 or chamber 6? It accepts the air carried along with the mat. This air passes through the collection chamber 15 and -Merges with the tough flowing exhaust. In order to maintain air balance, the first air passage 3 A portion of the air traveling therein is pumped out through the duct 17. This is heater 7 This is supplemented by not only circulating air but also supplying make-up air from outside. Sky It is also possible to circulate air from the duct 17 to the heater 7, but the extent of this circulation is , determined by impurities that accumulate in the air during the mat manufacturing process.

Additionally, Figure 5 shows a typical measurement for setting the temperature of the air stream as desired. and controls are shown.

The method according to the invention is not limited to the above-mentioned apparatus, but its basic principle is It can be summarized as follows.

a) Mix cellulose fibers and thermally bondable fibers in appropriate proportions.

b) introducing the cellulosic fibers and the thermally bondable fibers into a stream of gaseous medium; Forming a mixture that is evenly distributed throughout.

C) heat bondable fibers to form a bond between the fibers and the cellulose fibers; The temperature of the gaseous medium is increased to a range that leads to a bonded state in which it is possible to

d) Cellulose fibers and the cellulose fibers are twisted together and bonded to heat. The bondable fibers are then mapped onto a suitable forming support by means of a gaseous medium. form a grid.

FIG. 3 shows a flexible sample having a density of about 18-25 kg/m3 manufactured according to the present invention. 1 illustrates one preferred textile product made using a synthetic mat.

The product includes a flat rigid building member 5 in which the mat is an external covering. It is used as a layer 5C serving as a heat insulating material between the cover 5a and the inner cover 5e. this layer 5C must be made from multiple laminated mats so that the layer thickness is 10 to 20 cm. is also possible. In the example shown in FIG. 3, the surface of the heat insulating layer 5c facing the outer covering is equipped with a non-woven draft shield and a ventilation gap between the outer covering and the draft shield. Ru. Therefore, a vapor barrier sheet 5d is provided on the side facing the inner coating. , which includes a plastic sheet or film laminated on the surface of the heat insulating layer 5c. You can The vapor barrier sheath) 5d is covered with an internal covering 5e made of plasterboard. ing.

It is also possible to consider other final product shapes for mats produced in accordance with the present invention. is possible.

Therefore, if a cloak with a density higher than that of the insulation mat (1) becomes a problem, If so, it is possible to use such mats in the same way as chipboard.

Raw materials suitable for use as mats include plant-based cellulose fibers. All included, especially woody plant-based fibers such as mechanically manufactured valves. Contains fibers. Therefore, the density of the mat is controlled by the selection of the degree of beating of the fibers. It is possible to control Fibers can also be sourced from various types of wood. However, trees of the 5alicaceae family, such as willows and aspens, Fibers obtained from this method are particularly preferred because they have a length that allows easy twisting. other Cotton and jute can also be used as raw materials, either alone or in a mixture with wood fibers. It is.

Examples of bonding fibers that can be bonded by heat include polyethylene and polyester. Thermoplastic polymers may be included. In addition, heavy weights that soften at low temperatures It is also possible to utilize conjugate fibers comprising members consisting of agglomerates. air - The temperature of the air flow A flowing in the chamber 6 is determined according to the softening point of the binder fiber material. The fiber surface can be softened to an adhesive or tacky state. For the most commonly used thermoplastic polymer materials, this point ranges from 100° to 2 It is within the range of 00°. Phenol-based fibers that can be bonded by heat Includes all types of fibers that bond through structural changes caused by heat, such as fibers of be able to. The structure of the mat is determined by the selection of the ratio of binder fibers to cellulose fibers. The basic raw materials for the structure of the product are plant-based. Cellulose fibers, which usually make up the majority of the total mass of the mat.

The device of the present invention can be used not only with polyester fibers but also with spruce-based wood fibers. They have also been used in producing various mats. Air upstream of air chamber The flow velocity of the flow is in this case 42 m/s, and the surface velocity of the supply roll 2 is approximately 10 m/s. m/s was low. Polyester fibers used as binder fibers are , 15-20% of the total amount of fiber fed. The weight of the manufactured mat is It is in the range of 40 g/m2 to 3000 g/m” per unit area, and 40 g/m ” is the weight of the paper fabric. Therefore, the present invention can also be applied to the production of thin products. If applicable and the mat is formed on the support, gluing can also be done at the same time. It has the advantage of being possible. The density obtained is from 18 kg/m' to 40 0 g/m' range, and the density of 18 kg/m' is mainly due to insulation and It is related to glass wool and rock wool used as g/m'' refers to chipboard.

The resulting product shows that plant-based cellulose fibers have a low heat transfer coefficient and The fibers have excellent insulation properties and can produce mats suitable for insulation purposes. have.

In addition, the resulting mat underwent further processing to improve several properties. can be added. For example, the mat can be treated with flame retardant and anti-mold treatment. . The fibers supplied for mat formation can also be subjected to such treatments.

Claims (14)

[Claims] 1. A flow of gaseous medium (A) is placed on the advancing forming platform (1). used to form mats from cellulose fibers based on Thermally bondable binder fibers intertwined with cellulose fibers When the binder fibers are brought into a bonded state through the action of A method for making textile products by bonding cellulose fibers to each other in By setting the temperature of the flow to a sufficiently high temperature, the cellulose fibers are twisted together. The fibers are placed on the forming platform (1) to bind the binder fibers, which can be bonded by heat generated. Applying heat that brings the binder fibers into a bonded state already in the flow (A) to be transported. A method for making a textile product characterized by: 2. The fibers are conveyed into the flow of gaseous medium (A), such as by supply rolls (2), The fibers are released from the supply roll (2) etc. by the first flow (A1) of the gaseous medium. and then said first stream (A1) is connected to a second stream (A1) of a hotter gaseous medium. 2), so that said first and second streams (A1, A2) The temperature of the mixed flow (A) of gaseous medium generated by 2. A method according to claim 1, characterized in that: 3. On the forming platform (1), said matrix is After the mat is formed, the mat is Further, said mat is treated, said mat being supported from the opposite side to the direction of flow of the gaseous medium. The method according to claim 1 or 2, characterized in that: 4. Said additional treatment is the pressure on the mat created by the flow of gaseous medium (B). 4. The method of claim 3, further comprising increasing the density of the mat by . 5. a first stream (A1) of a gaseous medium releasing said fibers and said higher temperature A second stream (A2) of gaseous medium is supplied through their own passages (3, 4). After passing through the forming platform (1), the flows form a mat. A portion of the flow (A) used for the flow (A1) passes through the channel (A1) for releasing the fibers. 3) characterized in that it is circulated within the stream for preheating of the stream. 5. The method according to claim 2, 3 or 4. 6. A portion of the stream (A2) of the hotter gaseous medium traveling in the passageway (4) follows the mat. The gaseous medium that is sent for treatment so that its flow passes through the mat Claim 3, 4, or 5. The method according to any one of 5. 7. The above claim, characterized in that the thermally bondable fibers are thermoplastic fibers. The method described in any of the above. 8. The resulting mat is combined with the outer covering (5a) in the building component (5). The front is characterized in that it is used as a heat insulating material (5c) between the inner covering (5e). A method according to any of the claims. 9. Claim characterized in that gypsum board is used as the internal covering (5e). The method according to item 8. 10. Apparatus for making textile products, the apparatus comprising a chamber for a gaseous medium ( 6), the chamber having an inlet end provided with passages (3, 4) and movable. with an outlet end closed by a forming platform (1) mounted so as to and the device is further thermally bonded until brought into a bonded state by the action of heat. as well as means for heating the possible binder fibers supplied from the passages (3, 4). A mat is formed on the forming platform (1) by the flow of gaseous medium (A) plant-based cellulose fibers and thermally bondable binder fibers to means (11, 12) for feeding into the chamber (6) said fibers The cellulose fibers are glued to each other in a gas medium heater (7). ) and heated to bring the binder fibers into a bonded state already in the chamber (6). a passageway extending from the heater to the chamber in order to Equipment for making textile products. 11. At the inlet end of the chamber (6) there is a supply roll (2) or the like. the inlet end of the chamber (6) for releasing the fibers therefrom. , a first channel for gaseous medium extending to said supply roll (2) or the like; A passageway (3) is provided whereby from said passageway (4) connected to the heater. A second passage for the gaseous medium is formed at the entry point (3a) of said first passage (3). extending into the chamber (6) at a downstream position in the flow direction of the gaseous medium; 11. The device according to claim 10. 12. In the direction of travel of the forming platform (1), next to the chamber (6) , preferably provided by the same forming platform (1) emanating from this chamber. There is a second chamber (8) containing a mat support platform which can be The second chamber (8) includes a dazzle for passing the flow of gaseous medium (b) through the mat. 12. The device according to claim 10 or 11, characterized in that a cut (9) is provided. . 13. In the direction of supply of the gaseous medium, said first passageway (3) is connected to said chamber ( 6) a collection chamber (10) located on the side of the forming platform (1) opposite the 13. Device according to claim 11 or 12, characterized in that they are connected. 14. The passage (4) between the heater (7) and the chamber (6) is connected to the second chamber. Claim 1, characterized in that the passageway (9) is branched from the passageway (9) connected to the bar (8). 2 or 13.