JPS6052834B2 - 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 sides of the fabric. 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.

The purpose of the present invention is to obtain a single yarn fineness D of 4 to 1 br, and a ratio of the circumscribed circle diameter φ (microns) of the fiber cross section to lo, 1A5 determined from the single yarn fineness D, φ/10.1/ A deformed cross-section crimped polyester fiber padded cotton with a D of 1 or more and a silicone resin attached to the fiber surface is used with an air permeability V
This can be achieved by using futons made by filling the sides of a fabric whose (cc/cil-sec) satisfies V≦0.9φ. 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.

The single yarn fineness must be 4 to denier, more preferably 5 to W denier.

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 larger than todenyl, it is not preferable because it gives a rough and hard feeling when compressed into futons. Circumscribed circle diameter of fiber cross section (
■1 determined from the numerical value D of single yarn fineness of φ microns)
The ratio to the value of /D, φ/10, IID is required to be 1 or more, and more preferably 1.50 or more.

If φ/10.1Ji5' is less than 1.3, the purpose of the present invention cannot be achieved because the padded cotton will often escape from the side fabric of the futon.

φ/10.1 here! The hill is one indicator indicating the degree of deformation of the fiber cross-sectional shape from a perfect circle.

In other words, the closer φ/10.1Ji5' is to 1, the closer the cross-sectional shape of the fiber becomes to a perfect circle, and when the fiber is made of padded cotton, the amount of through-holes from the side fabric increases. On the other hand, φ/10.1!
5 moving away from 1 means that the degree of deformation of the cross-sectional shape of the fiber based on a perfect circle increases, and the crimped polyester fiber used in the present invention has a value of φ/10.1Ji5' of 1. 30 or more, the cross-sectional shape is a deformed cross-sectional shape that is a perfect circle and moves away from it.

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 commonly used method, and a negative photographed by enlarging it 200 times with an optical microscope is further enlarged to 2.5 f8 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 the air permeability v (Cc
/d-Sec), and the ventilation amount V is 0.
It is necessary that the diameter is 9φ or less, and more preferably 0.8φ or less.

[However, φ is the diameter (microns) of the circumscribed circle of the cross section of the cotton fiber. ] The air permeability of the fabric used for the side fabric in the present invention is a value obtained according to the measurement method described below.
In other words, for example, the Handbook of Synthetic Fibers compiled by the Japan Textile Society (Testing and Inspection Division:
Using a commercially available Frazier type tester described in the physical property test section, select an appropriate air hole and test approximately 15C7.
Attach one or more test pieces to the "grip". Adjust the suction pump using a rheostat so that the inclination barometer reads 0.5 (at this time, if the vertical barometer does not If it does not rise, replace the air hole with one that is one step smaller, and if it rises too much, replace it with one that is one step larger.
．． Replace with the air hole. ), read the pressure indicated by the vertical barometer at that time. The amount of air passing through the test piece V (Cc/a1!·Sec) is calculated from the pressure value and the type of air hole using the airflow calculation table attached to the tester, and is expressed as the average value of the five pieces. If the air permeability V of the fabric used for the side fabric of the futon is larger than 0.9φ, the filling cotton fibers will often slip out of the side fabric, making it impossible to achieve the object of the present invention.

The crimped polyester fiber with a deformed 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 a Y
A desired fiber cross-sectional shape and φ/10.1J are obtained by appropriately changing the polymerization degree of polyester, spinning temperature, discharge speed, etc. from a nozzle of type, T-shape, cross-shape, *-shape, or any of these modified shapes.
After the undrawn yarn of i5' is melt-spun, it is gathered into a tow form and subjected to ordinary stable drawing and post-processing. 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. A method of removing excessively attached processing liquid after immersion and drying or heat-treating the tow. 3. After crimping the stretched tow with a push-in crimping device, the tow is passed through a stuffing box of the device or a stuffing box. A known method such as immediately thereafter 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.
．． It is preferably 1 to 3.011%. 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. from ethylene glycol and at least one other copolymer component, or from bis-2-
A polyester obtained from hydroxyethyl terephthalate or a low polymer thereof, or from bis-2-hydroxyethyl terephthalate and at least one other copolymer component, in which at least 70% of the polyester constituent units are polyethylene terephthalate. The material of the fabric used for the side fabric of the futons of the present invention is not particularly limited, and woven fabrics, knitted fabrics, and nonwoven fabrics can be used, and natural fibers, recycled fibers, semi-synthetic fibers, synthetic fibers, etc. can be used, and filament yarns, spun yarns, etc. Alternatively, a mixture of these can be used, but a fabric made of a blend of polyester and cotton yarn is
It is also preferable in terms of functionality and comfort.

The futons of the present invention are made by combining a polyester filler with specific characteristic values and a side fabric with a specific air permeability. This is a point singularity that can be prevented.

Note that 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., which are made of fiber aggregates wrapped in woven fabric. .

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

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

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

(b) Number of crimps (mountain/251a) = (B/A) x 25 (c) Degree of crimps (%) = (C/A-1) x 100 where A: initial load 219/d was applied The length of the fiber of time (?
), B: Length when initial load 2m9/d is applied
Number of crimp ridges in A, C: Length (?) of the fiber when a load of 3001 g/d is applied, Example 1 Stretching with different single yarn fineness, fiber cross-sectional shape, and circumscribed circle diameter of the fiber cross-section A commercially available organopolysiloxane treatment solution (a mixture of -0H-terminated dimethylpolysiloxane and methylhydrogen polysiloxane) was applied to a polyethylene terephthalate fiber bundle having an intrinsic viscosity of 0.66 after crimping.
After adhering to 8% by weight (based on the fiber bundle), the powder was dried at 150° C. twice in a circulating hot air dryer and cured, and then cut into 51 fiber lengths.

The polyethylene terephthalate fiber with a fiber length of 51 wR was used as the filling cotton, and the air permeability (■) was 32.9 cc/d・Se.
A comforter was manufactured by a conventional method using taffeta made of polyester/cotton blend spun yarn (c) as a side cloth.

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 Example 1
Single yarn fineness 6 denier and fiber length 517 obtained in the same manner as
! Rlt has a circular cross-sectional shape (i.e. 10.1Jh=24
．． A comforter was made by using the polyethylene terephthalate fiber of 7) having an intrinsic viscosity of 0.66 as the filling and the taffeta of the polyester/cotton blend spun yarn of Example 1 as the side fabric.

Claims (1)

[Scope of 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 modified cross-section crimped polyester fiber filler with silicone resin attached to the fiber surface is heated to an air permeability of V (cc/cm^2・s
Futons made by filling the sides of a fabric with ec) that satisfies the following formula. V≦0.9φ (However, φ is the diameter of the circumscribed circle of the cross section of the filling cotton fiber.)