KR101182845B1 - Cushion with excellent resiliency of the manufacturing process and its cushion - Google Patents

Abstract

PURPOSE: A method for fabricating a cushion material is provided to produce the cushion material with excellent restoring force by randomly laminating filaments of low melting point and high melting point. CONSTITUTION: A method for fabricating a cushion material with excellent restoring force comprises: a step of tangling and twisting filaments of low melting point and high melting point to form a crimp(S100); a step of disentangling the filaments using an opening device(S200); a step of moving the grey yarn and falling from the inside of a chamber to the upper portion(S300); a step of beating cotton using the grey yarn(S400); a step of randomly laminating the grey yarn(S500); a step of aligning the laminated material(S600); a step of forcibly discharging air; a step of moving the laminated material(S800); a step of heating and laminating the laminated material in a predetermined thickness(S900); and a step of cooling the prepared cushion material(S1000).

Description

Cushion with excellent resiliency of the manufacturing process and its cushion

The present invention relates to a method for producing a cushioning material having excellent restoring force and a cushioning material, and more particularly, when the opened low melting point short fiber and the high melting point short fiber are blown by air and are supplied by air, the surface of the inside of the chamber can be lightly blown like a feather. By laminating it randomly and randomly stacking the air supplied from the upper part by forced suction and discharged from the lower part, it is compressed at the same time with heating in the state of wind between short fibers and compresses at the same time with high porosity, so it has excellent resilience, resilience, sound absorption and moisture permeability. A method for producing a cushioning material and a cushioning material thereof.

Polyester cushioning materials have been mainly used for bedding such as bed mattress materials, but recently, they are harmless to the human body and are eco-friendly materials that can be recycled compared to existing insulation and sound absorbing materials such as glass wool or rock wool. As a substitute, it is getting much attention.

As a method of manufacturing a general cushioning material as described above, the low melting point short fibers and the high melting point short fibers having different melting points shown in FIG. 1 are opened with a yarn-like yarn using the opening means 10, and the opened fibers are fixed. Carding means 20 having a thickness and a width are used to form a web as shown in FIG. 2A.

The web formed by the carding means 20 is spread evenly on the conveyance belt and the web is laminated several times as shown in FIG. 2B using the web laminating means 30 so as to form a constant thickness. The web laminate is formed as described.

While transferring the web laminate formed by the web laminating means 30 to a predetermined height to the transfer belt, the web laminate is pressed at the same time as the heating / compression means 40 by heating and laminated at a constant thickness, for example, 300 mm. The web laminate is formed to have a thickness of 50 mm and cooled to produce a general cushioning material having a high density.

The general cushioning material is laminated with a plurality of webs by the web laminating means 30, the web produced by the carding means 20, and then compressed by heating and pressing means 40 simultaneously with the cooling means 50 Looking at the cushioning material produced by the cooling step using the it can be easily confirmed that the web is laminated as shown in the accompanying drawings, Figure 3a.

As described above, the conventional method for producing a cushioning material is manufactured in the order of short fibers → opening → web manufacturing → web lamination → heating / compression → cooling. The conventional cushioning material is formed in a multi-layered sheet in which the web has a constant thickness and width. Since it is laminated and heat-compressed, as shown in FIG. 3B, the voids between the short fibers and the short fibers have low permeability, and the web and the webs are easily peeled from each other. Conventional cushioning material laminated in a cross layer has a problem in that the elasticity and resilience is degraded due to the nature of the cushioning material receiving the vertical force by the web coupling is laid horizontally / horizontally by the carding means.

On the other hand, since the web laminate, in which the yarns are neatly arranged by the carding means, is pressed at high density during heat pressing, there is no space formed between the short fibers and the short fibers, so that the sound absorption and moisture permeability are significantly reduced. There is this.

Republic of Korea Patent Registration No. 561275 Republic of Korea Patent No. 623837

The present invention has been made in view of the conventional problem, when the opened yarn is dropped from the upper part of the chamber, the yarn that was bound together by the needle installed in the upper end of the chamber is loosened, and the short fibers are scattered and scattered by air, so that the horizontal and vertical states After laminating randomly, the air supplied into the chamber is forcedly sucked out from the lower part of the chamber so as to be discharged through the stacked short fibers, and the air is filled in the voids between the short fibers and the short fibers. It has a large porosity and excellent elasticity and resilience, to provide a cushioning method and a cushioning material excellent in sound absorption and moisture permeability.

Another object of the present invention is to drop the opened yarn without using air from the upper part of the chamber, and the desired thickness and density of the laminate to be laminated on the lower side by the needle bar installed at the upper end inside the chamber. The present invention provides a method for producing a cushioning material having excellent elasticity and resilience, heat absorption and moisture absorption, and a cushioning material having excellent sound absorption and moisture permeability.

The object of the present invention described above is to form a twist so that the length of 15mm ~ 76mm, low melting point short fibers having a melting point of 80 ~ 180 ℃ and the high melting point short fibers of 15mm ~ 76mm, a melting point of 180 ~ 400 ℃ intertwined well A crimp forming step of making; A carding process of unpacking agglomerates of fibers between the low melting short fibers and the high melting point short fibers using a carding means; A one-way feed process of sucking and moving the opened yarn and freely dropping the upper portion inside the chamber; The other surface process of burning the cotton such that the cotton does not fall when the yarn is dropped into the chamber by the yarn feeding process; An air lamination process in which the yarns burnt by the other surface process are blown out by the air to be spread out and are stacked in a random manner without covering the horizontal and vertical directions; A stack alignment step of shaking the stacks before, after or simultaneously with performing the air lamination step; An air discharge step of forcibly discharging the supplied air before, after, or performing the air lamination step of the product thickness adjusting step; A stack feeding step of moving the stacked stacks by a predetermined amount by the air stacking step; A heat pressing step of heating and pressing the laminate supplied by the laminate feeding process to a predetermined thickness; It is achieved by a method for producing a cushioning material having excellent restoring force, characterized in that consisting of a cooling step of cooling the cushioning material produced by the hot pressing process.

Meanwhile, another object of the present invention includes a crimp forming process of forming a twist so that low melting short fibers having a melting point of 80 to 180 ° C. and high melting point short fibers having a high melting point of 180 to 400 ° C. are entangled with each other; A carding process of unpacking agglomerates of fibers between the low melting short fibers and the high melting point short fibers using a carding means; A one-way feed process of sucking and moving the opened yarn and freely dropping the upper portion inside the chamber; The other surface process of burning the cotton such that the cotton does not fall when the yarn is dropped into the chamber by the yarn feeding process; A lamination step of dropping the yarns that are burned out by the other surface process and randomly stacking the yarns; A stack alignment step of shaking the stacks before, after or simultaneously with performing the stacking step; A stack supply step of moving the stack stacked by a predetermined amount by the stack alignment step; A heat pressing step of heating and pressing the laminate supplied by the laminate feeding process to a predetermined thickness; It is achieved by a method for producing a cushioning material having excellent restoring force, characterized in that consisting of a cooling step of cooling the cushioning material produced by the hot pressing process.

It is achieved by a method for producing a cushioning material having excellent restoring force, characterized in that the air supplied at the time of performing the air lamination process is supplied to the chamber housing in the upper or lower direction with respect to the other surface means.

It is achieved by a method for producing a cushioning material having excellent restoring force, characterized in that the air supplied at the time of performing the air lamination process is supplied to the chamber housing in the horizontal or vertical direction.

It is achieved by a method for producing a cushioning material having excellent restoring force, characterized in that further comprising a product thickness control process for controlling a constant thickness and density of the laminate laminated by the lamination process.

The implementation method of the above method is 15 to 76 mm in length, 10 to 50% by weight of low melting short fibers having a melting point of 80 to 180 ° C., 2 to 15 denier, and 15 to 76 mm in length, and a melting point of 180 to 400 ° C., fineness. After lamination to include 50 to 90% by weight of high melting point short fibers of 2 to 40 deniers, it is compressed to have a thickness of 20 to 300 mm by heating and pressing, and has a restoring force of 70 to 90% and sound absorption of 50 to 80%. A cushioning material having excellent restoring force, characterized in that the pore density is 10 to 90%.

On the other hand, the cushioning material is made of an elastic means is further included, the elastic means is achieved by a cushioning material having excellent restoring force, characterized in that any one of a fiber ball formed by agglomerating the rubber, urethane foam particles, fibers.

The cushioning material is achieved by a cushioning material having excellent restoring force, characterized in that the mat layer is formed to have a predetermined thickness and is formed irregularly radiated.

The mat layer is achieved by a cushioning material having excellent restoring force formed by laminating any one of both sides or between cushioning materials.

The cushioning material is achieved by a cushioning material having excellent restoring force, characterized in that the mesh net is laminated between any one of the two sides or the cushioning material.

The cushioning material is achieved by a cushioning material having excellent restoring force, characterized in that the porosity of the upper and lower layers is different from each other.

In the present invention, the opened yarn consisting of low melting short fibers having a length of 15 mm to 76 mm and a melting point of 80 to 180 ° C. and a high melting short fibers having a length of 15 mm to 76 mm and a melting point of 180 to 400 ° C. is provided at the top of the chamber. When the single fiber is thrown away by air spraying and is randomly stacked, the air supplied into the chamber is forcedly sucked and discharged from the lower part of the chamber to be discharged through the stacked short fibers, and between the short fibers and the short fibers. The air is filled into the pores of the air and is compressed at the same time with heating to fill the air between the short fibers and the short fibers, thereby providing excellent elasticity and resilience, and excellent sound absorption and moisture permeability.

1 is a manufacturing process of the cushioning material showing a general manufacturing method of the cushioning material.
Figure 2a is a photo showing a state in which a card is manufactured by the carding means in the general cushioning material manufacturing method web.
Figure 2b is a photograph showing the appearance of laminating the web prepared by Figure 2a.
Figure 2c is a photograph showing the appearance of the web laminate formed by laminating the web.
Figure 3a is a photograph showing the side surface state of a conventional cushioning material.
Figure 3b is a photograph enlarged 50 times the surface of the conventional cushioning material.
Figure 4a is a manufacturing process of the cushioning material showing a method of manufacturing a cushioning material applied the technology of the present invention.
Figure 4b and Figure 4c is a manufacturing process of the cushioning material showing a method of manufacturing a cushioning material which is another embodiment of the present invention.
5 is an exemplary view showing a structure of a manufacturing apparatus of a cushion material to which the technique of the present invention is applied.
Figure 6a is a side surface photograph of the cushioning material produced by the technique of the present invention.
Figure 6b is a 50 times magnification surface photograph of the cushion material produced by the technique of the present invention.
7 to 10 are cross-sectional views showing modifications of the cushioning material produced by the technique of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

4A is a manufacturing process diagram of a cushioning material showing a method of manufacturing a cushioning material to which the technique of the present invention is applied. The method of manufacturing a cushioning material according to the present invention has a length of 15 mm to 76 mm and a low melting point short fiber having a melting point of 80 to 180 ° C. and 180 degrees. High melting point short fibers of ~ 400 ℃ perform a crimp formation process (S100) to form a twist so that they are entangled with each other.

When the crimp forming process (S100) is completed, the short fibers having a straight shape form a twist like curly hair. The reason for forming a crimp in the low melting short fibers having a melting point of 80 to 180 ° C. and the high melting points short fibers having a high melting point of 180 to 400 ° C. is to cause the single fibers to be entangled with each other without being scattered individually. .

After the completion of the crimp forming process (S100) as described above is mixed with the short fibers forming the crimp (crimp) using a carding means to loosen the mass of the fiber so as not to aggregate the low melting point short fibers and high melting point short fibers To perform the opening step (S200). The carding process (S200) typically uses a multi-stage roller that protrudes a plurality of needle rods on the surface, and the carding means in the present invention includes a carding machine and a carding machine.

On the other hand, after the yarn is opened or carded by the opening step (S200) using the air to perform a one-step feed step (S300) to freely drop in the upper portion inside the chamber.

Although air transfer has been described as a method of performing the one-time transfer process (S300), this does not necessarily limit air transfer, but a transfer method using a transfer belt may be used.

The structure of the chamber (P) has a plurality of adjacent adjacent to the lower portion of the supply roller (P-2) of a pair of two to supply the yarn in one direction while rotating in the upper chamber (P) as shown in the accompanying drawings The other needle roller (P-3a) protruding from the other surface roller (P-3) is rotated while performing the other surface process (S400) to burn the opened short fibers.

Summarizing the description of the other surface process (S400) is a process of burning the cotton, such as by twisting the cotton so as not to fall when the yarn is dropped into the chamber (P) by the one-time transfer process (S300).

In the other surface process (S400) is carried out a lamination process (S500) to drop the yarns to the lower side of the chamber (P) in a random manner. Yarn that is burned by the other surface process (S400) is stacked in the interior space of the chamber (P), and after the stacking process (S500) or at the same time to perform a stack alignment process (S600) to align the stack by shaking.

The stack alignment step S600 vibrates the diaphragm J provided on one side of the chamber P by using an eccentric shaft rotated by a driving force of the driving motor to align the yarn.

 On the other hand, the product thickness control step (S700) for controlling the laminate laminated by the stack alignment process (S600) to have a predetermined thickness and density is performed.

The product thickness control process (S700) is to operate the thickness control plate (C) in the alignment state by the diaphragm (J) to adjust the space interval of the chamber (P) or press the aligned stack is laminated laminate While being pressed, the thickness is also adjusted to be thin while controlling the thickness.

For example, the melting point of 80 ~ 180 ℃, fineness 10 denier low melting point short fiber 20% by weight, melting point 180 ~ 400 ℃, fineness 30 denier high melting point short fiber 80% by weight to prepare a cushioning material having a thickness of 100mm The stack is transported by adjusting the thickness to be 300 mm to perform the stack transport step (S800).

In the stack transfer step (S800), a stack stacked in a vertical direction by a roller driving is transferred in a horizontal direction. After the heat-compression to be a thickness of 100mm by a heat pressing process (S900) to heat-press the laminate supplied by the laminate supply process (S800) to form a predetermined thickness after the cushioning material produced by the heat pressing process It is made in the order of the cooling step (S1000) to cool.

On the other hand attached to Figure 4b is a manufacturing process diagram of a cushioning material showing a method of manufacturing a cushioning material according to another embodiment of the present invention according to the low melting point short fiber having a length of 15mm ~ 76mm, melting point 80 ~ 180 ℃ and high melting point of 180 ~ 400 ℃ Performing a crimp formation process (S100) to form a twist so that the short fibers are entangled with each other.

When the crimp forming process (S100) is completed, the short fibers having a straight shape form a twist like curly hair. The reason for forming the creep in the low melting short fibers having a melting point of 80 to 180 ° C. and the high melting points short fibers having a high melting point of 180 to 400 ° C. is to cause the single fibers to be entangled with each other and to be not scattered individually. .

After the completion of the crimp forming process (S100) as described above is mixed with the short fibers to form a crimp (creep) using a carding means to loosen the mass of the fiber so as not to aggregate the low melting point short fibers and high melting point short fibers To perform the opening step (S200). The carding process (S200) typically uses a multi-stage roller that protrudes a number of needle rods on the surface.

On the other hand, after the yarn is opened or carded by the opening step (S200) using the air to perform a one-step feed step (S300) to freely drop in the upper portion inside the chamber.

The structure of the chamber (P) has a plurality of adjacent adjacent to the lower portion of the supply roller (P-2) of a pair of two to supply the yarn in one direction while rotating in the upper chamber (P) as shown in the accompanying drawings The other needle roller (P-3a) protruding from the other surface roller (P-3) is rotated while performing the other surface process (S400) to burn the opened short fibers.

The other surface yarn is dropped by the other surface process (S400) to the lower chamber (P) to be stacked in an orderly manner, while the other surface yarn is blown by the air by the other surface process (S400) and spread out widely spread the horizontal and vertical direction The air lamination process (S500a) for randomly stacking randomly is performed.

In the air lamination process S500a, since air is injected by the air injection means P-4 to generate pressure in the chamber P, air discharge means installed at the lower end of the chamber P by the amount of air charged therein. After spraying air using (P-5), the stacked yarns are adsorbed during suction and discharge to prevent flying of the laminate.

When the air lamination process S500a is completed, the stack alignment process S600 is performed, and the stack alignment process S600 is installed at one side of the chamber P by using an eccentric shaft rotated by the driving force of the driving motor. The vibration plate (J) is vibrated to align the yarn.

 Pressing the aligned stack by operating the thickness control plate (C) in a state aligned by the diaphragm (J) will be able to adjust together with the density while adjusting the thickness of the stacked stack is thin.

When the air is supplied into the chamber P, the air supplied at the time of performing the air lamination process S500a is supplied into the chamber in the upper or lower direction about the other surface machine, and preferably, the air lamination process S500a. Air to be supplied at the time of performing is to be supplied into the chamber (P) in the horizontal or vertical direction.

Air supplied after performing the air lamination step (S500a) or after performing the lamination step (S600) and the lamination step (S600) or performing the air lamination step (S500a). The air discharge process (S500b) for forcibly discharging may be performed together.

On the other hand, the air discharge process (S500b) forcibly sucks and discharges the air supplied to the chamber (P) when performing the air lamination process using the air dust collecting means, wherein the air dust collecting means not shown in the drawing is the bottom of the chamber Installed in the air discharged into the chamber when the air is discharged through the laminated stack.

Therefore, the stacked yarn, that is, the structure of the laminate by performing the air lamination process (S500b) and the stack alignment process (S600) has a large amount of air between the short fibers and the short fibers, as shown in FIG. The structure of the present invention is excellent in restoring force, sound absorption, and pore density.

The reason for the suction discharge of the air is to solve the problem that the pressure inside the chamber P rises when only the air is injected into the chamber P, and also at the bottom of the chamber P between random and loosely stacked yarn stacks. This is to allow the air to be filled into the voids and the effect that the yarns stacked by the forced suction is in close contact with each other, and prevents the laminated yarns from being blown by the air.

On the other hand, the stack transfer step (S800) to move the stack stacked by a predetermined amount by the stack alignment process (S600) is performed. In the stack conveying step (S800), the stack stacked in the vertical direction by the driving of the roller is converted into a horizontal direction and transported.

The stack transport step (S800) is to discharge the stack by a predetermined amount by the drive of the discharge roller (P-6) in the same manner as a conventional cushioning material manufacturing method, if the stack is laminated to some extent, the stack transport Heat compression process (S900) to form a predetermined thickness by heat pressing the laminate supplied by the process and cooling step (S1000) for cooling the cushion material produced by the heat pressing process.

Further performing the product thickness control process (S700) for controlling the laminate laminated by the air lamination process (S500a) to have a certain thickness and density to easily control the thickness and density to produce a cushioning material having various thicknesses and densities Is easy.

The product thickness control process (S700) is one side plate of the chamber is configured to move the thickness control plate (C) by the operation of the rack and pinion as shown in the accompanying drawings Figure 5 of the interior space of the chamber housing (P) The thickness and density are controlled by compressing the stack by adjusting the spacing or area.

In the present invention has been described as the horizontal movement of the thickness control plate (C) by the operation of the rack and pinion, which is not intended to limit the structure and may use a cylinder if necessary.

As described above, the surface of the cushioning material manufactured by the manufacturing method of the present invention does not have a peeling phenomenon as it can be seen that the layer is not formed as shown in FIG. 6A, and the cushioning material according to the conventional manufacturing method by web lamination. The cushion material to which the technique of the present invention was applied was prepared as follows and compared with physical properties.

The melting point of 80 ~ 180 ℃, fineness 10 denier low melting point short fiber 20% by weight, the melting point of 180 ~ 400 ℃, fineness 30 denier high melting point short fiber 80% by weight was mixed to prepare a cushion material having a thickness of 100mm It was found that the cushioning material of the present invention has improved restoring force of 70 to 90%, sound absorption of 50 to 80%, and pore density of 10 to 90%.

Fig. 6A is a side surface photograph of a cushioning material manufactured by the technique of the present invention, in which the low melting point short fibers and the high melting point short fibers are randomly stacked so that they are blown by air and entangled with each other to form a layer. It is not easy to separate the yarn, Figure 6b is a 50 times magnification of the surface of the cushioning material produced by the technology of the present invention as seen that there is a lot of voids between the yarn is supplied air from the bottom Forced suction discharge allows air to remain in the voids even when heated and compressed at the same time while being heated between yarns made of low-melting short fibers and high-melting short fibers, providing excellent elasticity and resilience, and excellent sound absorption and moisture permeability. The cushion material can be manufactured.

The features and advantages of the present invention as described above will become more apparent from the following examples. However, the present invention is not limited to the following examples.

[Example 1]

Manufactured with a thickness of 25 mm and a density of 71 kg / m ³ using the same method as the present invention, using 40 wt% of the single fineness 4 denier as the low melting point short fiber and 60 wt% of the single fineness 15 the denier as the high melting point short fiber. After cutting to a predetermined size, the sound absorption performance, moisture permeability and restoring force were measured by the following method.

-Sound absorption performance: KS F 2814

Permeability coefficient: KS F

Resilience:

Flexural Strength: KS M 3808

[Example 2]

Manufactured with a thickness of 50 mm and a density of 39 kg / m ³ using the same method as in the present invention, using 30 wt% of the single fineness 4 denier as the low melting point short fiber and 70 wt% of the single fineness 7 denier as the high melting point short fiber. After cutting to a predetermined size, the sound absorption performance, moisture permeability and restoring force were measured by the following method.

[Comparative Example 1]

40% by weight of low-density short fibers having a single fineness of 4 deniers and 60% by weight of high-density short fibers having a short degree of fineness of 15 deniers are manufactured by carding, which is a conventional cushioning material manufacturing method, and then fabricated a web. Lamination was carried out by hot pressing to prepare a thickness of 25mm, a density of 100kg / m ³ and cut to a predetermined size to measure the sound absorption performance, moisture permeability and restoring force.

[Comparative Example 2]

30% by weight of low-density short fibers having a single fineness of 4 deniers and 70% by weight of low-density short fibers having a single fineness of 7 deniers are manufactured by carding after carding, which is a conventional cushioning method, to prepare a web. In the manufacturing method of laminating and heating and pressing, a thickness of 50 mm and a density of 67 kg / m ³ were prepared and cut into a predetermined size to measure sound absorption performance, moisture permeability and restoring force.

division
thickness
(mm)
density
(kg / m ³ ) The composition of the fiber Properties Low melting point
Short fibers High melting point
Short fibers Sound absorption
(NRC) dynamic stability
(%) Permeability coefficient
(g / m ² hmmhg) Example 1 25
71 4 de
40wt% 15 de
60wt% 0.59 62.5 0.513 Example 2 50
39 4 de
30wt% 7 de
70wt% 0.82 79.1 0.704 Comparative Example 1 25
100 4 de
40wt% 15 de
60wt% 0.42 30 - Comparative Example 2 50
67 4 de
30wt% 7 de
70wt% 0.70 46.7 0.340

As can be seen in Table 1, the cushioning material manufactured by the manufacturing method of the present invention has a lower density, lighter weight, higher porosity, excellent water permeability, and resilience is significantly improved. have.

Meanwhile, as shown in FIGS. 7 to 10, on the other hand, the elastic means is further mixed to form the cushioning material, and the elastic means includes any one of rubber balls, urethane foam particles, and fiber balls formed by agglomerating fibers. Can be used.

The reason for using the rubber, urethane foam particles, fiber balls is to enhance the aesthetics and to obtain the same effect as forming a polka dot to aesthetically look.

Meanwhile, a mesh net may be used as a substitute for the mat layer, and the mesh net may be laminated and used between any one of both sides or cushioning material.

In addition, the cushioning material may be configured to have different porosities of the upper and lower layers. In addition, the cushioning material may be further provided with a mat layer formed to have a predetermined thickness and irregularly radiated, and the mat layer may be laminated between any one of the two sides or the cushioning material. The reason for installing the mat layer is to improve the elastic modulus and to aesthetically look.

S100: Crimp Forming Process S200: Opening Process
S300: One-way feed process S400: Other surface process
S500: Lamination Process S600: Lamination Alignment Process
S700: Product thickness control process S800: Laminate transfer process
S900: Hot pressing process S1000: Cooling process
C: Thickness Plate P: Chamber
P-2: Supply Roller P-3: Other Roller
J: diaphragm

Claims (10)

A crimp forming step of forming a twist to entangle the low melting short fibers having a length of 15 mm to 76 mm and a melting point of 80 to 180 ° C. with high melting points short fibers having a length of 15 mm to 76 mm and a melting point of 180 to 400 ° C .;
A carding process of unpacking agglomerates of fibers between the low melting short fibers and the high melting point short fibers using a carding means;
A one-way feed step of moving the opened yarn and freely dropping the upper portion of the inside of the chamber;
The other surface process of burning the cotton such that the cotton does not fall when the yarn is dropped into the chamber by the yarn feeding process;
An air lamination step of randomly stacking the yarns supplied before or after the other surface process by being blown out by the air and spreading out in a wide horizontal direction;
A stack alignment step of shaking the stacks before, after or simultaneously with performing the air lamination step;
An air discharge step of forcibly discharging the supplied air while performing the air lamination step;
A stack transfer step of moving the stacked stacks by a predetermined amount by the air stacking step;
A heat pressing step of heating and pressing the laminate supplied by the laminate transfer step to form a predetermined thickness;
Cushioning material having excellent restoring force, characterized in that consisting of a cooling step of cooling the cushioning material produced by the heat pressing process.
A crimp forming step of forming a twist to entangle the low melting short fibers having a length of 15 mm to 76 mm and a melting point of 80 to 180 ° C. with high melting points short fibers having a length of 15 mm to 76 mm and a melting point of 180 to 400 ° C .;
A carding process of unpacking agglomerates of fibers between the low melting short fibers and the high melting point short fibers using a carding means;
A one-way feed step of moving the opened yarn and freely dropping the upper portion of the inside of the chamber;
The other surface process of burning the cotton such that the cotton does not fall when the yarn is dropped into the chamber by the yarn feeding process;
A lamination step of dropping the yarns that are burned out by the other surface process and randomly stacking the yarns;
A stack alignment step of shaking the stacks before, after or simultaneously with performing the stacking step;
A stack transfer step of moving a stack stacked by a predetermined amount by the stack alignment step;
A heat pressing step of heating and pressing the laminate supplied by the laminate transfer step to form a predetermined thickness;
Method for producing a cushioning material having excellent restoring force, characterized in that consisting of a cooling step of cooling the cushioning material produced by the heat pressing process
The method of claim 1,
The method of manufacturing a cushioning material having excellent restoring force, characterized in that the air supplied during the air lamination process is supplied to the chamber housing from the upper or lower center around the other surface means.
The method according to claim 1 or 2,
The method of manufacturing a cushioning material having excellent restoring force, characterized in that it further comprises a product thickness control process for adjusting the laminate laminated by the lamination process or air lamination process to have a certain thickness and density.
10 to 50% by weight of low melting point short fibers having a melting point of 80 to 180 ° C. and a fineness of 2 to 15 denier, and 180 to 400 ° C. and a fineness of 2 to 40 denier. After lamination to include 50 to 90% by weight of the melting point short fiber, it is heated and pressed to have a thickness of 20 to 300 mm, and has a structure of 70% to 90% restoring force, 50% to 80% sound absorption, and pore density. Cushioning material excellent in restoring force characterized by being ~ 90%.
The method of claim 5, wherein
The cushioning material having excellent restoring force, characterized in that the cushioning material further comprises an elastic means.
The method according to claim 6,
The elastic means is a cushion material having excellent restoring force, characterized in that any one of rubber, urethane foam granules.
The method of claim 5, wherein
The cushioning material having excellent restoring force formed by laminating a mat layer formed by irregularly radiating a predetermined thickness to any one of both sides or between the cushioning materials.
The method of claim 5, wherein
The cushion material has excellent restoring force, characterized in that the porosity of the upper layer and the lower layer is configured differently.
The method of claim 5, wherein
The cushioning material has excellent restoring force, characterized in that the mesh net is laminated between any one of the two sides or the cushioning material.

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