JP6698405B2 - Batting - Google Patents

Description

  The present invention relates to batting suitable for bedding and clothes.

  Conventionally, cotton (synthetic cotton) made of synthetic fibers such as polyester and polypropylene has been used as batting for bedding and batting for clothes. One of the advantages of using synthetic cotton as batting is that it dries quickly and can be washed. For example, Patent Document 1 discloses a stuffed cotton body using batting, which is a mixture of crimpable short staple fibers, crimpable multileaf fine staple fibers, and crimpable hollow thick short staple fibers. Have been described. Patent Document 2 describes a composite elastic sheet in which a net-like structure having high elasticity in one direction and a non-woven fiber web are laminated on one side or both sides thereof.

JP, 2013-27470, A JP, 10-195746, A

  By the way, when using batting for bedding or clothes, there is a problem that the batting pops out from the bedding or clothes, or the batting shifts in the bedding or clothes, so-called cotton shift occurs. In this regard, in the cotton wadding described in Patent Document 1, a high-density woven fabric having a cover factor within a predetermined range is used for the side fabric, and is quilted. However, this is not preferable because the degree of freedom in selecting the side ground is limited. In addition, equipment for quilting is required, and the cost of the entire bedding or the clothes increases. The batting used for bedding and clothing is required to be soft and bulky. In this regard, the composite elastic sheet described in Patent Document 2 only describes stretchability in at least one direction for materials such as diapers, base cloths for poultices, disposable underwear that are not supposed to be washed. Is.

  Therefore, it is an object of the present invention to provide a batting which can increase the degree of freedom in selection of side fabrics and can improve bulkiness, shape retention and washing resistance.

The batting of the present invention is a support material composed of a mesh-like non-woven fabric which is laminated in a weft direction so that the orientation axis of the longitudinal web and the orientation axis of the transverse web intersect with each other, and a synthetic fiber disposed on at least one surface of the support material. A layer containing cotton, which is batting in which the support material and the layer containing synthetic fiber are entangled, and the entangled portion of the support material and the layer containing synthetic fiber has a predetermined pitch. The width of each entangled portion is smaller than the pitch, the width of each entangled portion is 1 to 20 mm, and the pitch is 3 to 100 mm .

  According to the above configuration, since the support material and the layer containing synthetic cotton are entangled with each other, cotton shift is unlikely to occur, quilting is not required, and the degree of freedom in selecting a side site can be increased. . In addition, the reticulated non-woven fabric as a support material has a reinforcing effect, and when the batting is used for bedding or clothes, bulkiness, shape retention and washing resistance can be improved.

It is a figure which shows an example of the support material used for batting. It is a figure which shows the split web which comprises the support material shown in FIG. It is a figure which shows the slit web which comprises the support material shown in FIG. It is process drawing which shows the manufacturing process of the web layer of synthetic cotton. It is a figure for demonstrating the method of manufacturing a batting by entangling a support material and the web layer of synthetic fiber cotton by a hydroentangling method, and integrating them. FIG. 6 is a perspective view of a part of the high-pressure hydroentangling step in the hydroentangling method of FIG. 5, showing the batting according to the embodiment of the present invention. It is a figure which compares and shows each data of samples 1-12 used for evaluation.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The batting according to the present embodiment includes a support material made of a reticulated non-woven fabric, and a layer containing synthetic fiber arranged on at least one surface of the support material, and a layer containing these support material and synthetic fiber, For example, it is entangled and integrated by the hydroentanglement method. The batting according to the present embodiment is suitably used for bedding such as futons and clothes.

  FIG. 1 shows an example of the support material 1 described above. In the present embodiment, as the support material 1, for example, a reticulated non-woven fabric having a mesh structure made of polyolefin (polypropylene or polyethylene) is used in order to withstand the drying temperature after hydroentanglement and improve the adhesion with the binder fiber. . Specifically, it is a reticulated nonwoven fabric in which the orientation axes 2a of the longitudinal webs (split webs) 2 and the orientation axes 3a of the transverse webs (slit webs) 3 intersect with each other so as to cross each other. A commercially available reticulated nonwoven fabric, for example, Warif (registered trademark) or CLAF (registered trademark) manufactured by JX Nippon Mining & Energy Corporation can be used as the support material 1.

  2 and 3 respectively show a split web 2 and a slit web 3 which constitute the support member 1 shown in FIG. The split web 2 shown in FIG. 2(a) is formed by uniaxially stretching a polyolefin film in the longitudinal direction (axial direction of the orientation axis 2a of the split web 2), splitting it in the longitudinal direction, and widening it. It For the split web 2, a polyolefin resin such as high-density polyethylene and first and second low-density polyethylene are used.

  Specifically, a multi-layer film (uniaxially oriented body) produced by a molding method such as a multi-layer T-die method and having first and second low-density polyethylene laminated on both surfaces of high-density polyethylene is provided at least in the longitudinal direction (longitudinal direction). After being stretched 3 times, it is split in a zigzag pattern in the same direction by using a splitter (split treatment) to form a reticulated film, which is further widened to a predetermined width. By widening, the trunk fibers 4 and the branch fibers 5 are formed into a net-like body as illustrated. This split web 2 has a relatively high strength in the longitudinal direction over the entire width direction.

  2B is an enlarged perspective view of a region B1 surrounded by the one-dot chain line in FIG. 2A, and the split web 2 has a low melting point lower than the high density polyethylene on both surfaces of the high density polyethylene layer 6. It has a three-layer structure in which the density polyethylene layers 7-1 and 7-2 are laminated. The low-density polyethylene layers 7-1 and 7-2 function as an adhesive layer between the webs when the support web 1 and the slit webs 3 are laminated back and forth when forming the support 1.

  The slit web 3 shown in FIG. 3(a) is formed by inserting a large number of slits in the transverse direction (axial direction of the orientation axis 3a of the slit web 3) in a polyolefin film and then uniaxially stretching in the transverse direction. It Specifically, the slit web 3 is formed by forming intermittent slits such as a zigzag pattern in parallel in the lateral direction (width direction), for example, with a hot blade, in the portion excluding both ears of the above-described multilayer film, and then in the lateral direction. It is formed by stretching. The slit web 3 has a relatively high strength in the lateral direction.

  FIG. 3B is an enlarged perspective view of a region B2 surrounded by the one-dot chain line in FIG. 3A, and the slit web 3 has a melting point higher than that of the high-density polyethylene layer on both sides of the high-density polyethylene layer 6′. It has a three-layer structure in which low low-density polyethylene layers 7-1' and 7-2' are laminated. These low-density polyethylene layers 7-1' and 7-2' function as an adhesive layer between the webs when the support web 1 is laminated with the split web 2 in a weft-wise manner.

Then, the split web 2 and the slit web 3 are laminated so that their orientation axes intersect with each other, and thermocompression-bonded to be integrated. That is, the contact portions of the split web 2 and the slit web 3 (layers of low-density polyethylene) that have been laminated in a weft-wet manner are joined by thermocompression bonding, whereby the support material 1 made of a reticulated nonwoven fabric is formed. The support material 1 preferably has an opening ratio of 50% or more so that the raw cotton is well entangled when the water is entangled. If the opening ratio is less than 50%, the entanglement of the main fibers may be insufficient and fluffing tends to occur.
Here, the aperture ratio can be calculated by the following formula from the number of fibers per 50 mm width and the measurement of the fiber width (mm).
Aperture ratio (%)=(50-average number of fibers in MD direction×fiber width)×(50-average number of fibers in CD direction×fiber width)/(50×50)×100
The influence of the branch fiber 5 is ignored.

Further, in order not to impair the softness and suppleness of the batting, it is preferable that the weight of the reticulated non-woven fabric is 20 g/m ² or less, and in order to give the batting sufficient tensile strength and sewing strength, a basis weight of 5 g/m ² or more. You will need it. Therefore, the basis weight of the support material ^{1, 5g / m 2 ~20g / m} 2 is preferred. According to experiments, in order to achieve both soft and required strength such as feathers, preferably a basis weight of 10g / m ² ~20g / m ² in the case of using batting bedding, also when used in cotton clothes preferably the basis weight of ^{5g / m 2 ~15g / m 2} . It is preferable that the reticulated nonwoven fabric does not have elasticity because it is excellent in dimensional stability when it is used as batting.

In the present embodiment, the synthetic cotton arranged on at least one surface of the support material has a fineness of 1 dtex to 20 dtex and a layer containing synthetic cotton in order to maintain the bulkiness of the batting and improve heat retention. basis weight preferably ^{10g / m 2 ~100g / m 2} . In the present embodiment, the synthetic cotton includes a first synthetic cotton layer disposed on at least one surface of the support material and a second synthetic cotton layer disposed on the other surface of the support material. Is also good.

When the fineness of the synthetic cotton is less than 1 dtex, sufficient bulkiness cannot be obtained, and the synthetic cotton becomes fragile. On the other hand, if the fineness of the synthetic cotton exceeds 20 dtex, the synthetic cotton becomes stiff and the touch becomes poor. Preferably, the fineness is 5 dtex or more and 15 dtex or less. Further, the basis weight of the layer containing synthetic cotton is ^{15g / m 2 ~50g / m 2} , preferably made bulky and soft near the feather products.

  Synthetic cotton may contain two or more different synthetic fibers. The layer containing synthetic cotton may be composed of only the main fibers, but may also contain the main fibers and binder fibers for joining the fibers together. Examples of the main fiber include polyamide fibers such as nylon 6 and nylon 66, polyester fibers such as polyethylene terephthalate and polybutylene terephthalate, and polyolefin fibers such as polyethylene and polypropylene. One or more of them may be selected arbitrarily. Can be used. Of these, inexpensive polyester fibers and polyolefin fibers are preferable as a feather substitute. Examples of the binder fiber include polyethylene (PE)/polypropylene (PP) core-sheath fiber, polyethylene (PE)/polyethylene terephthalate (PET) core-sheath fiber or copolymer polyethylene terephthalate (coPET)/polyethylene terephthalate (PET) core-sheath fiber. Etc., and an inexpensive polyethylene (PE)/polypropylene (PP) core-sheath fiber is preferable.

  When the synthetic fiber is used by mixing the main fiber and the binder fiber, when the mixing ratio (mass ratio) of the main fiber and the binder fiber is in the range of 50:50 to 95:5, the binder in the drying/heat treatment step is The fibers are melted and/or softened so that the contact points of the fibers of the web are bonded to each other to prevent fluffing, and the softness is close to that of feathers. Preferably, the compounding ratio (mass ratio) of the main fiber and the binder fiber is 70:30 to 90:10. The temperature of the drying/heat treatment process and the blending ratio of the main fiber and the binder fiber are important for achieving both touch and bulkiness.If the temperature is too high, the reticulated nonwoven fabric will shrink, and if the temperature is too low, the bonding will be insufficient. It becomes fluffy.

  For example, when a polyethylene net-like nonwoven fabric is used as the support material and polyethylene (PE)/polypropylene (PP) core-sheath fibers are used as the binder fibers, the preferred temperature range for drying and heat treatment is about 135°C. If the amount of the binder fiber is less than 5%, the bonding will be insufficient, and if the amount of the binder fiber is more than 50%, the binder fiber will be melted and/or softened in the drying/heat treatment step, so that sufficient bulkiness cannot be obtained.

  To intertwine the support material and the layer containing synthetic cotton, a fibrous web of synthetic cotton is constructed. The method for producing the fibrous web is not particularly limited, but the fibrous web is produced, for example, by the steps shown in FIG. Here, the case where the layer containing synthetic fiber is used by mixing the main fiber and the binder fiber will be described. First, in the supplying step, a block-shaped synthetic cotton (raw cotton) composed of main fibers and binder fibers is supplied (step ST1). Next, in the fiber-opening/blending process, the supplied synthetic cotton is loosened and uniformly mixed (step ST2). Subsequently, in the carding process, the synthetic fiber that has been uniformly mixed passes through a plurality of rolls to form a sheet-shaped fibrous web (step ST3). The arrangement direction of the fibers in the fibrous web is not particularly limited, and the fibrous web formed may be any of a parallel web, a cross web, a semi-random web, a random web and the like.

  As a method for entanglement of the support material and the layer containing synthetic fiber, for example, any of needle punching method, hydroentanglement method, embossing method, etc. may be carried out, but the constitution of the layer containing support material and synthetic fiber From the viewpoint of avoiding damage to the fibers as much as possible, the hydroentangling method is preferred. Generally, the pressure of the water flow at the time of performing the water entanglement method is preferably 1 to 14 MPa, more preferably 2 to 10 MPa.

  Hereinafter, regarding the entanglement by the hydroentangling method which is preferable in the embodiment of the present invention, referring to FIG. 5, the fiber web is entangled by the hydroentanglement method with the support material 1 to integrate the support material 1 and the fiber web. A method of manufacturing the batting will be described. This method for producing batting includes a supplying step of supplying the support material 1 and the fibrous web, a high-pressure hydroentanglement step of performing a water injection treatment, a drying/heat treatment step, and a winding step.

  First, in the supply step, the support material 1 is supplied from the supply roll 41, and the fiber webs 11a and 11b are supplied from the supply rolls 42a and 42b. Specifically, the fiber web 11a is supplied to one surface (upper surface) side of the support material 1, and the fiber web 11b is supplied to the other surface (lower surface) side of the support material 1. Then, the support material 1, the fibrous web 11a, and the fibrous web 11b that have been supplied are conveyed in the superposed state, that is, as the laminated body 43 to the high-pressure hydroentanglement step. Although the fiber web is supplied to both sides (upper surface and lower surface) of the support material 1 here, the fiber web may be supplied to only one surface (upper surface or lower surface) of the support material 1. The fibrous webs 11a and 11b may have different thicknesses.

  Next, in the high-pressure water entanglement step, a plurality of thin high-pressure water streams 45a from the high-pressure water injector 45 are applied to the support body 1, the laminated body 43 of the fiber web 11a and the fiber web 11b on the screen 44 as the support body. It is jetted, and water entanglement is performed in stripes. At this time, as shown in FIG. 6, while moving the laminated body 43 in the direction of arrow AA, the high-pressure water stream 45a is jetted from each nozzle 45-1, 45-2, 45-3,... Of the high-pressure water stream injector 45. At this time, the width ΔW1, ΔW2, ΔW3,... Of the entangled portions is 1 to 20 mm, and the pitch ΔP1, ΔP2, ΔP3,. The high-pressure water flow 45a is adjusted so as to be 3 to 100 mm.

  The widths ΔW1, ΔW2, ΔW3,... Of the entangled portions are more preferably 1 to 5 mm, and the pitches ΔP1, ΔP2, ΔP3,... Are 5 to 20 mm. The pitch is increased by sufficiently increasing the pitches ΔP1, ΔP2, ΔP3,... With respect to the widths ΔW1, ΔW2, ΔW3,... More preferably, the widths ΔW1, ΔW2, ΔW3,... Are 2 mm to 5 mm, and the pitches ΔP1, ΔP2, ΔP3,... Are 5 mm to 10 mm, and the bulkiness and softness of the batting close to a feather product are obtained. As a result, the fiber webs 11a and 11b are entangled with and integrated with the support 1.

  The hydro-entangled laminate 43 is then conveyed to the drying/heat treatment step, and is heat-treated while being dried by the dryer 48, for example. Here, by adjusting the temperature in the drying/heat treatment step to the above-mentioned temperature, the binder fibers in the fiber webs 11a and 11b are melted or softened to improve the adhesion between the support material 1 and the fiber webs 11a and 11b. It is possible to improve. Then, the dried laminated body 43 is wound into a batting (product) 49 in the product winding step.

  One or a plurality of battings 49 are stacked and used depending on the application. When used for bedding, for example, when filling the sewn side fabric with batting, by fixing the four sides or four corners of the side fabric, the cotton shift can be suppressed.

  The present inventors have found that the basis weight and opening ratio of the support material 1, the fineness and blending ratio (mass ratio) of the main fibers and the binder fibers of the fiber webs 11a and 11b, the basis weight of the upper and lower surfaces of the synthetic cotton, and the entanglement portion Samples having various widths and pitches were prepared, and tensile strength, entangled state, bulkiness, etc. were measured and evaluated. FIG. 7 shows each data of Samples 1 to 12 used for evaluation in comparison.

  Hereinafter, the content of the present invention will be described with reference to specific examples. The tensile strength, entangled state, softness, bulkiness, and overall evaluation of the obtained battings were measured as follows.

(Tensile strength)
The tensile strengths in the longitudinal and transverse directions were measured according to JIS L1096.

(Entangled state)
The obtained batting was set to 300 mm×300 mm, the state of fluff when rubbed with both hands was observed, and the entangled state was evaluated (sensory evaluation) based on the following criteria.
When there is almost no fuzz: "○"
If there is some fluff: "△"
When the fuzz is severe: "x"

(soft)
The obtained batting was set to 300 mm×300 mm, and the softness (sensory evaluation) was evaluated according to the following criteria by the feel when rubbing with both hands.
When very soft: "○"
Soft: "△"
When it is a little stiff: “×”

(Bulky)
The thickness (cm) was measured under a constant load (20 g/cm ² ) and calculated from the following formula using the basis weight (g/m ² ).
Bulkiness (g/cc) = basis weight/thickness

(Comprehensive evaluation)
The bulkiness value was in the range of 0.1 to 0.15 g/cc, and was evaluated in three grades of “◯”, “Δ”, and “x” based on the entangled state and the softness.

[Sample 1]
In Sample 1, CLAF (registered trademark) manufactured by JX Nikko Nisseki Energy Co., Ltd. having a basis weight of 15 g/m ² and an aperture ratio of 60% was used as the support material 1. 80 parts by mass and 20 parts by mass of a composite fiber having a fineness of 6 dtex and a fiber length of 51 mm, polyethylene terephthalate as a main fiber of synthetic cotton, a fineness of 2 dtex as a binder fiber, a polypropylene (PP) core and a polyethylene (PE) sheath having a fiber length of 51 mm, respectively. And a fiber web having a basis weight of 25 g/m ² was produced by the above method.

  Then, the above-mentioned fibrous web is laminated on the upper surface and the lower surface of the support material 1, and in this state, the hydroentangling treatment with a water pressure of 5 MPa is performed with the width of each entangled portion ΔW=2 mm and the pitch of each entangled portion ΔP=10 mm. It was Then, it was dried and heat-treated at 135° C. to produce striped batting.

  When the tensile strengths of the prepared battings in the longitudinal direction and the transverse direction were measured, sufficient strengths of 68 N/50 mm and 136 N/50 mm were obtained. The evaluation of the entangled state was also good entanglement with almost no fluff.

  Furthermore, when the softness was evaluated (sensory evaluation), it was very soft and had a feel close to feathers.

The sample of Sample 1 had a bulkiness value of 0.126 and was good in entangled state and softness. The weight of this sample is 65 g/m ² and the thickness is 0.051 cm.

[Sample 2]
Sample 2 uses the support material used in Sample 1 and synthetic cotton, and the synthetic fiber is entangled only on the upper surface of the support 1. The weight of this synthetic cotton is set to 50 g/m ² . Other conditions are the same as those of sample 1. At this time, the tensile strengths in the longitudinal direction and the transverse direction were 63 N/50 mm and 125 N/50 mm, respectively, which were sufficient strengths. The evaluation of the entangled state was also good entanglement with almost no fuzz. Furthermore, the softness was also evaluated well, and it was very soft and had a feel close to feathers. In Sample 2, the bulkiness value was 0.130 g/cc and the entangled state and softness were also good. The weight of this sample is 65 g/m ² , and the thickness is 0.050 cm. Therefore, the same effect as that of the sample 1 can be obtained with the batting of the sample 2 in which the synthetic fiber is entangled only on the upper surface of the support material 1.

[Sample 3]
In Sample 3, CLAF (registered trademark) manufactured by JX Nikko Nisseki Energy Co., Ltd. having a basis weight of 10 g/m ² and an aperture ratio of 70% was used as the support material 1. Polyethylene terephthalate having a fineness of 6 dtex and a fiber length of 51 mm as the main fiber of the synthetic cotton, and 2 dtex of a fineness of 2 mm as the binder fiber, a PP core having a fiber length of 51 mm, and a composite fiber of PE sheath were mixed at 70 parts by mass and 30 parts by mass, respectively, to obtain a sample. A fiber web having a basis weight of 40 g/m ² was produced in the same manner as in 1.

  Then, the fibrous web was laminated on both sides of the support material 1, and in this state, hydroentangling treatment was performed at a water pressure of 5 MPa with a width ΔW of each entangled portion of 2 mm and a pitch of each entangled portion of ΔP=10 mm. . Then, it was dried and heat-treated at 135° C. to produce striped batting.

Compared to Samples 1 and 2, since the weight of the support material 1 is small and the opening ratio is large, the tensile strengths in the longitudinal direction and the transverse direction are slightly reduced to 53 N/50 mm and 87 N/50 mm, respectively, but they are entangled. The condition and softness were good, and the bulkiness was sufficient at 0.129 g/cc. The weight of this sample is 90 g/m ² and the thickness is 0.070 cm.

  With respect to Samples 1 to 3 described above, the basis weight of the support material 1, the pitch ΔP of each entangled portion, the width ΔW of each entangled portion, the mixing ratio of the main fiber and the binder fiber, the fineness of the main fiber, and the cotton material Samples (Samples 4 to 12) in which the areal weight of the upper surface and the lower surface and the ratio thereof were variously changed were prepared, and the tensile strength, the entangled state, the softness, the bulkiness, and the like were examined for comprehensive evaluation.

[Sample 4]
Sample 4 has a basis weight of support material 1 of 22 g/m ² , and other conditions are the same as those of sample 1. Under these conditions, since the basis weight of the support material 1 was large, the tensile strengths in the longitudinal direction and the transverse direction were high at 89 N/50 mm and 196 N/50 mm, respectively, and the entangled state was good. However, the softness decreased and it became slightly hard, and the bulkiness was sufficient at 0.129 g/cc, but the overall evaluation was low. The weight of this sample is 72 g/m ² , and the thickness is 0.056 cm.

[Sample 5]
Sample 5 has the pitch ΔP of the entangled portion set to 150 mm, and other conditions are the same as those of sample 1. Under this condition, since the pitch ΔP of the entangled portion was large, the tensile strengths in the longitudinal direction and the transverse direction were reduced to 40 N/50 mm and 110 N/50 mm, respectively, and the entangled state was not good. The softness was sufficient, but the bulkiness was 0.081 g/cc, and the overall evaluation was low. The weight of this sample is 65 g/m ² , and the thickness is 0.080 cm.

[Sample 6]
Sample 6 has a width ΔW of the entangled portion of 30 mm, and other conditions are the same as those of sample 1. Under this condition, since the width ΔW of the entangled portion was large, the tensile strengths in the longitudinal direction and the transverse direction were high at 75 N/50 mm and 150 N/50 mm, respectively, and the entangled state was good. However, the softness was lowered and the bulkiness was 0.144 g/cc, and the overall evaluation was low. The weight of this sample is 65 g/m ² , and the thickness is 0.045 cm.

[Sample 7]
Sample 7 is the same as sample 1 except that the binder fiber is not used, that is, the main fiber is 100%. Under these conditions, the tensile strengths in the longitudinal direction and the transverse direction were sufficient at 45 N/50 mm and 125 N/50 mm, respectively. The entangled state was poor, but the softness was sufficiently good. The bulkiness was good at 0.105 g/cc, but the overall evaluation was low because the entangled state was insufficient. The weight of this sample is 65 g/m ² , and the thickness is 0.062 cm.

[Sample 8]
Contrary to sample 7, sample 8 has the binder fiber increased to 60%, that is, the compounding ratio of the main fiber and the binder fiber is 40:60, and the other conditions are the same as those of sample 1. Under these conditions, the tensile strengths in the longitudinal direction and the transverse direction were sufficiently high at 75 N/50 mm and 143 N/50 mm, respectively, and the entangled state was good, but the softness was insufficient. The bulkiness also greatly exceeded the value required at 0.135 g/cc, and the overall evaluation was low. The weight of this sample is 65 g/m ² , and the thickness is 0.048 cm.

[Sample 9]
Sample 9 uses polyester having a fineness of 30 dtex as a raw material of synthetic cotton, and other conditions are the same as those of sample 1. Under these conditions, the tensile strengths in the longitudinal direction and the transverse direction were 83 N/50 mm and 143 N/50 mm, respectively, which were sufficiently high. Although the entangled state and softness are somewhat inadequate, it was a level that was no problem for batting. The bulkiness was within the required range of 0.100 g/cc, but the overall evaluation was low. The weight of this sample is 65 g/m ² , and the thickness is 0.065 cm.

[Sample 10]
Sample 10 is a cotton material in which the basis weight of the upper surface and the basis weight of the lower surface are each 15 g/m ² , and the other conditions are the same as those of Sample 1. Even if the basis weight of the cotton material is reduced in this way, since it is reinforced by the supporting material 1 in the longitudinal direction and the transverse direction, the tensile strength is 55 N/50 mm and 118 N/50 mm, respectively. The overall condition was also good. However, the softness was lowered and the bulkiness was also 0.113 g/cc, and the overall evaluation was low. The weight of this sample is 45 g/m ² , and the thickness is 0.040 cm.

[Sample 11]
In sample 11, the upper surface of the cotton material was 150 g/m ² , and the lower surface was not provided with the cotton material. Other conditions are the same as those of sample 1. Even if the cotton material is provided only on the upper surface of the support material 1 in this manner, by providing a sufficient amount of the cotton material on the upper surface, the tensile strengths in the longitudinal direction and the lateral direction are 124 N/50 mm and 203 N/50 mm, respectively. Although it was higher, the softness was good, but the amount of cotton material was too large, and the entangled state was poor. The bulkiness exceeded the range required at 0.157 g/cc, and the overall evaluation was low. The weight of this sample is 165 g/m ² , and the thickness is 0.105 cm.

[Sample 12]
Sample 12 is a sample 7 in which the pitch ΔP of the entangled portion is not provided, and the entire surface is hydroentangled with respect to the laminated body. Since the support material as the intermediate layer is a reticulated non-woven fabric, the water flow is reflected by the reticulated non-woven fabric and the texture of the non-woven fabric is not good.

  The samples 4 to 11 described above are low in evaluation of one or a plurality of entangled states, softness, bulkiness, etc., but when compared with samples 1 to 3 produced under preferable conditions, It is also possible to adopt it according to the product to be manufactured, required characteristics, cost, and the like.

  As described above, since the reticulated nonwoven fabric and the synthetic cotton are integrated by entanglement on at least one surface thereof, the support material 1 as the core material and the synthetic cotton (fiber webs 11a, 11b) are entangled. This prevents cotton slippage and eliminates the need for quilting. As a result, it is possible to increase the degree of freedom in selecting the side land. Further, since the reticulated non-woven fabric as a support material has a reinforcing effect, when the batting is used for bedding and clothes, bulkiness, shape retention and washing resistance can be improved.

  Although the present invention has been described using the embodiments, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the invention at the implementation stage. Further, the embodiments include inventions at various stages, and various inventions can be extracted by appropriately combining a plurality of disclosed constituent elements. For example, even if some constituent elements are deleted from all the constituent elements shown in the embodiment, at least one of the problems described in the section of the problem to be solved by the invention can be solved, and it is described in the section of the effect of the invention. When at least one of the effects obtained is obtained, a configuration in which this constituent element is deleted can be extracted as an invention.

DESCRIPTION OF SYMBOLS 1... Support material 2... Split web 2a... Alignment axis 3... Slit web 3a... Orientation axis 4... Stem fiber 5... Branch fiber 6,6'... High-density polyethylene layer 7-1, 7-2, 7-1', 7-2'... Low-density polyethylene layer 11a, 11b... Fiber web 41, 42a, 42b... Supply roll 43... Laminated body 44... Screen 45... High-pressure water injector 45-1, 45-2, 45-3... Nozzle 45a... High-pressure water stream 48...Dryer 49...Batting (product)
ΔW (ΔW1, ΔW2, ΔW3)... Width of entangled portion ΔP (ΔP1, ΔP2, ΔP3)... Pitch of entangled portion

Claims (8)

A support material composed of a mesh-like non-woven fabric which is laminated so that the orientation axis of the longitudinal web and the orientation axis of the transverse web intersect with each other, and a layer containing synthetic fiber arranged on at least one surface of the support material. A batting comprising the supporting material and the layer containing the synthetic fiber, which is entangled,
Entangled portions of the support material and the layer containing the synthetic cotton are formed in a stripe shape having a predetermined pitch, the width of each entangled portion is smaller than the pitch , and the width of each entangled portion is 1 ~ 20 mm, said pitch is 3-100 mm, batting.   The batting according to claim 1, wherein the reticulated non-woven fabric is a non-woven fabric obtained by splitting and stretching a polyolefin film, and laminating the warp and weft so that the orientation axes intersect with each other.   The layer containing the synthetic cotton includes a first synthetic cotton layer disposed on one surface of the support material and a second synthetic cotton layer disposed on the other surface of the support material. The batting of item 1 or 2. The basis weight of the support material is 5 to 20 g / ^{m 2,} the aperture ratio of the support is 50% or more, batting according to any one of claims 1-3. The synthetic fiber has a fineness of its constituent fibers of 1 to 20 dtex, and a basis weight of a layer containing the synthetic fiber arranged on at least one surface of the support material is 10 to 100 g/m ^2. ~ The batting described in any one of 4 . The synthetic cotton, two different types including the above synthetic fibers, cotton according to any one of claims 1-5. The synthetic cotton, comprises a polyester fiber, or polyolefin fibers as main fibers, and the binder fibers to bond the fibers together, a batting according to any one of claims 1-6. The batting of Claim 7 whose compounding ratio (mass ratio) of the said main fiber and the said binder fiber is 50:50-95:5.

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