JPS6052833B2 - Futons - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to futons that have extremely little slip-off of padded cotton from the sides and improved shape retention and compression recovery.

By attaching silicone resin to crimped polyester fiber, its bulkiness, compressibility, compression recovery properties, and texture are improved.
Futons using this as padding cotton are already known.

However, the crimped polyester fibers obtained by adhering the silicone resin have improved slipperiness, so when using the fibers as padding for futons, the feel of the futons and the wind Although this method has the effect of improving compression properties, it has the disadvantage that the filling cotton easily falls out from the fiber side cloth. For this reason, in applications where it is important to avoid fibers coming out from the sides of futons, the weave density of the side parts used is extremely high, and the gap formed between the warp and weft of the side parts is The disadvantage is that the size of the futons needs to be reduced, which increases the manufacturing cost of the futons. An object of the present invention is to provide futons in which crimped polyester fibers to which silicone resin is attached are used as inserts, in which the insert cotton hardly escapes from the sides.

Such an object of the present invention is to provide a single yarn fineness D of 4 to [denier, the ratio of the circumscribed circle diameter φ (microns) of the fiber cross section to 10.1/D determined from the single yarn fineness D φ/10. 1/D is 1
．． 3. A crimped polyester fiber filler with a porosity of 2.
This can be achieved by using futons in which the side cloth is filled with 0% or less fiber. That is, the first feature of the present invention is that the cross-sectional shape and fineness of the crimped polyester fibers coated with silicone resin used as padding cotton have been specified.

Single yarn fineness must be 4 to 12 deniers, and 5 to 1
Niel is more preferred.

If the single yarn fineness is less than 4 denier, the compression properties of the futon are unsatisfactory, and the futon is not particularly stiff. Moreover, if the single yarn fineness is greater than 7 todenier, it is not preferable because it causes roughness and stiffness when compressed into futons. The circumscribed circle diameter of the fiber cross section φ (
10. which is determined from the numerical value D of single yarn fineness (microns).
The ratio to the value of 1/D, φ/10.1/D, must be 1.30 or more, and preferably 1.5 or more. φ/
If the ratio of 10.1-/D is less than 1.3, the purpose of the present invention cannot be achieved because the padded cotton will often escape from the sides of the futon.

φ/10.1Ji5' here is one index indicating the degree of deformation of the fiber cross-sectional shape from a perfect circle.

That is, the closer the φ/10.1J hill is to 1, the closer the cross-sectional shape of the fibers becomes to a perfect circle, and when the fiber is made of padded cotton, the amount of through-hole from the side fabric increases. On the other hand, φ/10.1jTi
As it moves away from 1, the degree of deformation of the cross-sectional shape of the fiber based on a perfect circle increases.

The crimped polyester fiber used in the present invention is φ/10.1
The value of JT5 is 1.30 or more, and the cross-sectional shape is a deformed cross-sectional shape that is considerably far from a perfect circle. Incidentally, the circumscribed circle diameter φ of the fiber cross section mentioned above refers to a value obtained by the following operation.

That is, a cross-sectional section of the fiber is taken by a conventional method, and a negative photographed with an optical microscope magnified 200 times. This is further magnified 2 times and printed to obtain a positive. The diameter φ of the circumscribed circle of the fiber cross section was determined by drawing the smallest diameter among the circles that touch at least two points on the outer periphery of the obtained positive fiber cross section and do not intersect with any part of the outer periphery. It is a value expressed as an average value of 50 values. Since the crimped polyester fiber with a deformed cross section is coated with silicone resin, it exhibits excellent shape retention and compression recovery properties as a padded cotton.

The second feature of the present invention is that the porosity of the fabric side cloth used for filling the crimped polyester filler described above is specified, and the porosity must be 20% or less, More preferably, it is 15% or less.

The porosity of the side cloth in the present invention is a value obtained according to the measurement method described below, and is the length of the short side of the rectangular gap formed between the warp and weft of the side cloth. In relation to this, it refers to the percentage of the number of gaps having a short side longer than φ of the crimped polyester filling to the number of unit gaps.
3, i.e. any part of the fabric side cloth 10
Select a spot, photograph it with an optical microscope at 7.5x magnification, then enlarge it further during printing, and finally take a 1x magnified photograph. Using this photo, all 4 gaps 10 are surrounded by 1 gap in the vertical direction and 1 gap in the horizontal direction.
Measure the length of the short side of the cap, and repeat this for m pieces to measure the length of the short side of a total of 10 (1) gaps, and calculate the number of gaps that have a short side longer than φ of the filling cotton. is expressed as a percentage of the total number of gaps. The porosity of the side fabric of futons is 20%
In the above case, that is, if a fabric with more than 20% of the gaps having a length of the short side longer than the diameter φ of the circumscribed circle of the fiber cross section of the crimped polyester padded cotton is used for the side cloth, the padded cotton The purpose of the present invention cannot be achieved because the fibers often escape from the side cloth. The crimped polyester fiber with a modified cross section used as the filling for futons according to the present invention can be used, for example, in a slit shape with a large ratio of the length of the slit to the width of the slit, as well as in Y-shape, T-shape, cross-shape, The desired fiber cross-sectional shape and φ/
After melt-spinning an undrawn yarn of 10.1Ji5', it is gathered into a tow form and subjected to ordinary stable drawing and post-treatment.

The method for attaching silicone resin to polyester fibers is to continuously immerse the undrawn yarn after melt spinning or the straight drawn tow after stretching into a silicone resin treatment solution, or to continuously immerse the tow into the polyester fiber using a nozzle. A method in which a silicone resin treatment solution is sprayed, the excess treatment solution is squeezed with a pair of rollers, etc., and crimps are applied, followed by drying or heat treatment. After immersing, removing excess treatment liquid and drying or heat-treating the tow, after crimping the stretched tow with a push-in crimping device, the tow is crimped in the stuffing box of said device or immediately after passing through the stuffing box. A known method such as a method of treating the polyester crimped fiber with a silicone resin treatment liquid can be employed.

The applied silicone resin may be any organopolysiloxane that can form a cured film after being attached to polyester fibers.

In particular, dimethylpolysiloxane having a hydroxyl group at the end,
Methylhydrodiene polysiloxanes, or mixtures thereof, are preferred. Organopolysiloxanes can be used both as aqueous solutions and as emulsions with emulsifiers. The amount of polyorganosiloxane attached to the fiber is 0.
．． 1-3. Preferably it is 1%. In addition, if an antistatic agent is mixed into the organopolysiloxane treatment solution, or if an antistatic agent is added after the organopolysiloxane treatment, the antistatic properties of the resulting fibers will be improved and static electricity problems will occur when making cotton inserts. This is preferable because it improves. The polyester constituting the crimped polyester fiber filler of the present invention is made from terephthalic acid or its lower alkyl derivative (diester of an alkanol having 1 to 4 carbon atoms) and ethylene glycol, or from terephthalic acid or its lower alkyl derivative and ethylene glycol. from glycol and at least one other copolymer component, or from bis-2-hydroxyethyl terephthalate or a low polymer thereof,
Alternatively, it is a polyester obtained from bis-2-hydroxyethyl terephthalate and at least one other copolymer component, in which at least 70% of the polyester structural units are polyethylene terephthalate. The material of the side cloth of the futon according to the present invention is not particularly limited, and natural fibers, regenerated fibers, semi-synthetic fibers, synthetic fibers, etc. can be used, and filament yarns, spun yarns, or combinations of these can also be used, but polyester fibers and Fabrics made of cotton blend yarn are preferred from the standpoint of functionality and comfort.

The futons of the present invention combine a polyester fiber filler with specific characteristic values and a side fabric with a specific porosity, and as a result, the cotton filler from the side fabric, which is a major drawback of the conventional method, is It is unique in that it can prevent omissions.

In addition, the futons as used in the present invention include all types of bedding, such as comforters and mattresses used for bedding, as well as cushions, cushions, kotatsu comforters, quilting, etc., in which cotton padding of fiber aggregates is wrapped in woven cloth. .

The present invention will be further explained in detail by giving examples below.

In addition, each characteristic in an Example was obtained by the following measuring method.

(a) Intrinsic viscosity: Measured at 25℃ in 0-chlorophenol
specified value.

(mouth) Number of crimps (mountain/257701ri = (B/A) x 25
(c) Degree of crimp (%) = (C/A-1) x 100 where A
: Fiber length (m) when an initial load of 2 Tft9/d is applied, B: Length when an initial load of 2 m9/d is applied Number of crimps in A C: Load 300]19/d
The length of the fiber when stretched (1al, Example 1) During the production stage of polyethylene terephthalate fiber, in detail, after the stretching and crimping, a commercially available organopolysiloxane treatment solution (-0H-terminated dimethylpolysiloxane and methylhydrogen polyamide) was used. The intrinsic viscosity was 0.6, which was obtained by adhering a mixture of siloxane (mixture of siloxane) to a fiber bundle with a weight of 0.4%, followed by drying and curing the powder in a circulating hot air dryer.
6, the fiber length 64 is different in single yarn fineness, fiber cross-sectional shape, circumscribed circle diameter of the fiber cross-section, etc. Polyethylene terephthalate fibers of
A comforter was manufactured by a conventional method using polyester/cotton mixed spun yarn taffeta with a porosity of 4.8% (the porosity is 11.0% in cases where the length of the short side of the gap is 45 microns or more) for the side fabric. .

Table 1 shows the results of observing the amount of fibers coming off from the side fabric after about 1 month of practical testing.

Comparative Example 1 In the same manner as in Example 1, a single yarn with a fineness of 6 denier and a circular cross-sectional shape (φ=24.7, 10.1!■=24.
7) polyethylene terephthalate fiber with an intrinsic viscosity of 0.66 is used as the filling cotton, and the length of the short side of the gap is 25 microns or more, and the taffeta is a polyester/cotton blend spun yarn with a porosity of 40.8%. When a comforter was made as a side cloth and a practical test was carried out for about one month, the loss of fiber from the side cloth was extremely noticeable.

Claims (1)

[Claims] 1 Single yarn fineness D is 4 to 12 deniers, 10.1 determined from the circumscribed circle diameter φ (microns) of the fiber cross section and single yarn fineness D
The ratio of φ/10.1√D to √D is 1.30 or more, and a crimped polyester fiber filler with a deformed cross section with silicone resin attached to the fiber surface is used on the fabric side with a porosity of 20% or less. Futons made by filling cloth.