JPS6317952B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to a fabric curing method for temporarily curing flexible fabrics in order to smoothly perform sewing operations using thin, flexible fabrics or fabrics with high elasticity. To provide a temporary hardening treatment method for a soft fabric, which can be easily hardened, and which can be quickly removed after the sewing work is completed and can be easily adapted to the sewing work. Thin, supple fabrics like jerseys and highly elastic fabrics like knitwear are difficult to handle when cutting, sewing, transporting, fixing the texture of the fabric, etc. It is very difficult to obtain beautiful sewn products using this method. When sewing with such fabric, p-dichlorobenzene,
Attempts have been made to apply and cure sublimable substances such as trioxane compounds and benzoic acid in a solvent in Japanese Patent Publication No. 53-49552 by a spraying method, but these methods lack film-forming ability, curing ability, or durability. It has many drawbacks such as lack of functionality, and has not been put into practical use. The reason why sublimable substances have poor film-forming ability is because they are low-molecular substances and essentially have no film-forming ability. Therefore, even if they are simply dissolved in a solvent, applied to fabrics, and dried, they do not form on the fabric surface. It is not possible to form a good cured film because only crystals are precipitated, and it is easy to peel off from the fabric and hardening cannot be obtained. The biggest drawback of fabric curing using a sublimable substance is that the degree of curing is insufficient due to the precipitation of crystals on the fabric surface. The present invention was arrived at as a result of intensive research. That is, in order to prevent the precipitation of crystals on the fabric surface, the present invention treats a sublimable substance with a melting point of 100°C or less at a temperature below the melting point, thereby re-melting the crystals that have precipitated on the fabric surface. The film is made into a thinner film by cooling and solidifying it.
In other words, the molar ratio to dimethyl isophthalate is 0~
benzoic acid or 0-hydroxybenzyl alcohol in the range of 2; 2,2-dimethyl-1,3-propanediol in the molar ratio of 0 to 1;
Sublimation consisting of 1,4-cyclohexanediol in the range of 3/4, 1,4-cyclohexanedione or 2-hydroxy-2-methylpropionic acid in the molar ratio range of 0 to 1/2, alone or in mixture. A low boiling point solvent consisting of hydrocarbons, halogenated hydrocarbons, alcohols, ethers, ketones and esters with a boiling point range of 39.8 to 99.9°C that dissolves the sublimable substance, either alone or in combination. A temporary curing treatment liquid characterized by being composed of a mixed solvent or an azeotropic mixed solvent is sprayed onto a flexible cloth, and the solvent is evaporated at a temperature lower than the melting point of dimethyl isophthalate, and further higher than the melting point of dimethyl isophthalate. A two-stage drying method at 68.5-99.9°C or one-stage drying at 68.5-99.9°C followed by cooling and solidification to create a hardened fabric that is easy to handle for sewing by applying 30% or less of the curing agent to the fabric. After the sewn product is completed, cured fabrics containing 0-hydroxybenzyl alcohol are decured at 100℃ in an atmosphere with relative humidity of 30% or more, and other cured fabrics are cured.
This is a treatment method that can decure at a temperature of 100 to 120°C and restore physical properties equivalent to those of untreated soft fabric. Also, dimethyl isophthalate in a molar ratio of 0 to 1/6 to 2,2-dimethyl-1,3-propanediol, and a sublimable substance consisting of both alone or in mixture, and a boiling point range of 39.9 to 99.9°C. A low boiling point solvent consisting of hydrocarbons, halogenated hydrocarbons, alcohols, ethers, ketones and esters that dissolves the sublimable substance or a mixed solvent or azeotropic mixed solvent consisting of a combination thereof. A two-stage drying method characterized by spraying a temporary curing treatment liquid onto a flexible cloth, evaporating the solvent at a temperature lower than the melting point of dimethyl isophthalate, and then treating at a temperature of 68.5 to 99.9°C higher than the melting point of dimethyl isophthalate; This is a processing method that involves drying in one step at 68.5 to 99.9°C, followed by cooling and solidifying, and by applying 30% or less of the curing agent to the fabric, it is possible to create a cured fabric that is easy to handle when sewing. Furthermore, a sublimable substance consisting of dimethyl isophthalate in a molar ratio of 0 to 1/3 to 1,4-cyclohexanedione or a mixture thereof, and a hydrocarbon system with a boiling point range of 39.8 to 99.9°C; It is characterized by consisting of a low-boiling point solvent consisting of halogenated hydrocarbons, alcohols, ethers, ketones, and esters that dissolves the sublimable substance, or a mixed solvent or azeotropic mixed solvent consisting of a combination thereof. A two-stage drying method characterized by spraying a temporary curing treatment liquid onto a flexible cloth, evaporating the solvent at a temperature lower than the melting point of dimethyl isophthalate, and then processing at a temperature of 68.5 to 99.9°C, which is higher than the melting point, or 68.5 to 99.9°C. This is a processing method that allows the fabric to be dried in one stage and then cooled and solidified, thereby making it possible to create a cured fabric that is easy to handle when sewing by applying less than 30% of the curing agent to the fabric. In this way, flexible fabrics can be changed into various hardness fabrics by combining sublimable substances and their mixed combinations, low-boiling point solvents, spraying methods, drying methods, and moisture-presence atmosphere curing treatment methods. It has also become possible to reproduce the original soft fabric. The curing agent used in the temporary curing treatment liquid of the present invention is
Dimethyl isophthalate and its molar ratio from 0 to
benzoic acid or 0-hydroxybenzyl alcohol in the range of 2, 2,2-dimethyl-1,3-propanediol in the molar ratio of 0 to 1, molar ratio of 0 to 1;
1,4-cyclohexanediol in the range of 3/4, 1,4-cyclohexanedione in the molar ratio range of 0 to 1/2, or 2-hydroxy-2-methylpropionic acid. Preferably 0 or 1/2 molar ratio of benzoic acid, 0 or 1 molar ratio of 0-hydroxybenzyl alcohol, 2,2-dimethyl-1,
0-1/2 molar ratio of 3-propanediol, 1,
0 or 1/2 molar ratio of 4-cyclohexanediol, 0 to 1/3 molar ratio of 2-hydroxy-2-methylpropionic acid and 1,4-cyclohexanedione, and also 1,4-cyclohexanediol and its Benzoic acid in a molar ratio of 0 to 1/2, preferably 0 to 1/3 molar ratio of benzoic acid, and 2,2-dimethyl-1,3-propanediol and a molar ratio of 0 to 1/3 thereof. 6, preferably 0 to 1/12 molar ratio of dimethyl isophthalate, or 0 to 1/12 molar ratio of 1,4-cyclohexanedione to it.
dimethyl isophthalate in the range of 1/3, preferably 0 to 1/6 molar ratio of dimethyl isophthalate;
It is a sublimable substance. Also, low boiling point solvents with a boiling point range of 39.8 to 99.9℃,
Preferably 39.8 for dimethyl isophthalate
~68.5°C, 39.8-98°C for 1,4-cyclohexanediol, 39.8-80°C for 1,4-cyclohexanedione, 2,2-dimethyl-
39.8 to 68.5 for 1,3-propanediol
It is a low boiling point solvent up to ℃, and these are hydrocarbons such as n-hexane, isohexane, 2-methylpentane, 2,2-dimethylbutane, 2,3-dimethylbutane, benzene, cyclopentane, cyclohexane, cyclohexene, special grade Benzine. Halogenated hydrocarbons such as dichloromethane, chloroform, carbon tetrachloride, 1,1-dichloroethane, 1,
2-dichloroethane, 1,1,1-trichloroethane, 1,2-dichloroethylene, 1-chloropropane, 1-chlorobutane, 2-chlorobutane,
1-chloro-2-methylpropane, 2-chloro-
2-methylpropane, 3-chloropropane, 2-
Chlor-2-methylpropane, 3-chloropropene, 1,1,2-trichloro-1,2,2-trifluoroethanol, fluorobenzene, hexafluorobenzene, chlorobromomethane. Alcohols include methyl alcohol, ethyl alcohol,
Isopropyl alcohol, 2-methyl-2-propanol. Ethers include isopropyl ether, methylal, dioxolane, methyldioxolane, tetrahydrofuran, 2-methylfuran,
1,2-dimethoxyethane. Ketones include acetone and methyl ethyl ketone; esters include ethyl formate, propyl formate, ethyl acetate, methyl acetate,
isopropyl acetate, methyl propionate,
Whether these solvents are used alone or in combination or azeotropically depends on the degree of solubility of the sublimable substance. In addition, the drying, cooling and solidifying treatment of the temporarily hardening agent spray treated fabric is not suitable for fabrics containing dimethyl isophthalate.
One-stage drying treatment at 68.5-99.9°C, preferably 39.8-99.8°C
After solvent evaporation treatment at 68.5℃, range of 68.5-99.5℃,
Preferably, it is a two-stage drying, cooling, and solidifying treatment in the range of 68.5 to 73.5°C. For fabrics containing 1,4-cyclohexanediol, one-stage drying treatment at 98-99.9°C, preferably 98-99.9° after solvent evaporation treatment at 39.8-98°C.
℃ range, preferably 99.9°C. For fabrics containing only 1,4-cyclohexanedione, one-stage drying treatment at 80-99.9°C, preferably 80°C after solvent evaporation treatment at 39.8-80°C.
2 in the range of ~99.9°C, preferably in the range of 80-85°C
This is a step-drying, cooling, and solidifying process. Furthermore, 2,2-
For fabrics containing dimethyl-1,3-propanediol, one-stage drying treatment at 68.5 to 73.5°C is preferred.
After solvent evaporation treatment at 39.8-68.5°C, two-stage drying, cooling and solidification treatment at 68.5-73.5°C, preferably 68.5-70°C. The decuring of the 0-hydroxybenzyl alcohol-containing treated fabric cured under the above conditions is 100%
C. and relative humidity of 30% or more, preferably 45% or more, the cured fabric is restored to the state of untreated fabric, but the limit of the relative humidity is determined by the amount of hardening agent deposited. Even if benzoic acid, p-dichlorobenzene, and trioxane-based compounds were dissolved in a low-boiling point solvent and applied by spraying, which has been tried in the past, the sublimation rate was too fast and the film-forming ability was too low. The major drawback to its practical use was that it was too weak and could not be cured to the point where it could be easily sewn and handled. The present invention completely eliminates these drawbacks, and although its mechanism of action is currently not completely elucidated in theory, benzoic acid or 0-dimethyl isophthalate in a molar ratio of 0 to 2 is used. hydroxybenzyl alcohol, 2 in a molar ratio range of 0 to 1;
2-dimethyl-1,3-propanediol, 1,4-cyclohexanediol in a molar ratio of 0 to 3/4, 1,4-cyclohexanedione in a molar ratio of 0 to 1/2, or 2-hydroxy- 2-methylpropionic acid, preferably 0 or 1/2 molar ratio of benzoic acid, 0 or 1 molar ratio of 0-hydroxybendialcohol, 2,2-dimethyl-1,3
- 0 to 1/2 molar ratio of propanediol, 1,4
- a mixed sublimable substance consisting of 0 or 1/2 molar ratio of cyclohexanediol, 0 to 1/3 molar ratio of 2-hydroxy-2-methylpropionic acid and 1,4-cyclohexanedione, and 1,
Molar ratio 0 to 4-cyclohexanediol
Benzoic acid in the range of 1/2, preferably 0 to 1/3 molar ratio of benzoic acid, also 2,2-dimethyl-
Molar ratio 0 to 1,3-propanediol
dimethyl isophthalate in the range 1/6, preferably 0 to 1/12 molar ratio of dimethyl isophthalate;
Also, dimethyl isophthalate in a molar ratio of 0 to 1/3 to 1,4-cyclohexanedione,
Preferably, a sublimable substance in a 0 to 1/6 molar ratio of dimethyl isophthalate has a boiling point range of 39.8 to 99.9°C.
Preferably 39.8 to 68.5 for isophthalic acid
°C, for 1,4-cyclohexanediol
39.8-98°C, 39.8-80°C for 1,4-cyclohexanedione, 2,2-dimethyl-1,3-
Propanediol is dissolved in a low boiling point solvent of 39.8 to 68.5°C and applied to a soft cloth in an amount of 30% or less, preferably 5 to 20%, by spraying, and the treated cloth is then dimethyl isophthalate-containing cloth. For
One-stage drying treatment at 68.5-99.9°C, preferably 39.8-99.8°C
After pretreatment drying at 68.5°C, main treatment drying and cooling solidification in the range of 68.5 to 99.9°C, preferably in the range of 68.5 to 73.5°C, and fabric containing 1,4-cyclohexanediol alone or in combination with benzoic acid. One-stage drying treatment at 98-99.9°C, preferably 39.8-98°C
°C range of 98-99.9 °C after pretreatment drying, preferably
Main treatment drying and cooling solidification at 99.9℃,
Further, for fabrics containing only 1,4-cyclohexanedione, one-stage drying treatment at 80 to 99.9°C, preferably in the range of 80 to 99.9°C after pretreatment drying at 39.8 to 80°C,
Preferably, the main treatment is dried and cooled to solidify in the range of 80 to 85°C, and furthermore, 2,2-dimethyl-
For fabrics containing 1,3-propanediol,
One-stage drying treatment at 68.5-73.5°C, preferably 39.8-73.5°C
Range of 68.5-73.5℃, after solvent evaporation treatment at 68.5℃
Preferably, by performing two-stage drying and cooling in the range of 68.5 to 70°C, the interaction of each of these causes the soft fabric to contain the hardening agent by 30% or less of the soft fabric.
The required hardened fabric can be produced preferably at a coverage of 5 to 20%. Also, after sewing products 0-
100℃ for products containing hydroxybenzyl alcohol
By treating the cured product in an atmosphere with relative humidity of 30% or more, preferably 45% or more, the properties of the flexible fabric before curing can be reproduced. By processing at ~120°C, the properties of the soft fabric before curing can be reproduced. As described above, according to the present invention, a flexible cloth can be freely hardened to a cloth having a hardness required for sewing. Also, it can be freely returned to the soft fabric before curing. A detailed explanation will be given below in Examples and Comparative Examples. Incidentally, the bending rigidity (indicated by B) is based on the following measurement method. Bending rigidity (indicated as B) (unit: g·cm ² /cm) Using a pure bending tester manufactured by Japanese Patent Publication No. 52-46710, according to the pure bending test method of the KES-F-2 system of the Japanese Society of Textile Machinery Engineers. Example 1 Polyester dioset (basis weight 88 g/m ² , B
= 0.0058 [average value of longitude and latitude] dimethyl isophthalate (hereinafter abbreviated as DMIPH), methyl alcohol (hereinafter abbreviated as MeOH): dichloromethane (hereinafter abbreviated as DCM) in a weight ratio of 1:1. After spraying a hardening agent dissolved in a mixed solvent, pre-drying was performed at 66°C, and then main drying treatment was performed at 73.5°C, yielding Table 1.

[Table] Comparative Example 1 Table 2 was obtained when the same curing agent as in Example 1 was sprayed onto a polyester dioset and dried at 66°C.

[Table] Example 2 The same polyester diose as in Example 1 was added with benzoic acid (hereinafter referred to as
Example 1 in the proportion of 1/2 molar ratio (abbreviated as BA)
After spraying a hardening agent dissolved in the same mixed solvent as in Example 1, the same treatment as in Example 1 was carried out.
Got 3.

[Table] Comparative Example 2 After spraying a curing agent dissolved in the same mixed solvent as in Example 1 at a ratio of 1 molar ratio of DMIPH to 3 molar ratio of BA to the same polyester dioset as in Example 1. When the same treatment as in Example 1 was performed, Table 4 was obtained.

[Table] Comparative Example 3 Table 5 was obtained when a polyester dioset similar to that of Example 2 was sprayed with a similar curing agent and then dried only at 66°C.

[Table] Example 3 For each molar ratio of DMIPH, 0-
1 molar ratio of hydroxybenzyl alcohol (hereinafter abbreviated as SA), 2,2-dimethyl-1,3-
Propanediol (hereinafter abbreviated as DMPDOL)
1/3 molar ratio of, 1/2 molar ratio of 1,4-cyclohexanediol (hereinafter abbreviated as CHDOL),
1/3 molar ratio of 1,4-cyclohexanedione (hereinafter abbreviated as CHDON), 2-hydroxy-2
-Methylpropionic acid (hereinafter abbreviated as HMPA)
After spraying a curing agent dissolved in the same mixed solvent as in Example 1 at a molar ratio of 1/3, the same drying treatment as in Example 1 was performed to obtain Table 6.

[Table] Comparative Example 4 After spraying the same curing agent to the same polyester dioset as in Example 3, each was heated at 66°C.
When drying was carried out, Table 7 was obtained. Incidentally, a large amount of crystal precipitation was observed on the cured cloth.

[Table] Example 4 A curing agent prepared by dissolving 1/3 molar ratio of BA to 1 molar ratio of CHDOL in the same mixed solvent as in Example 1 was sprayed onto the same polyester dioset as in Example 1. After application, pre-dry at 90℃ and then
When the main drying treatment was performed at 99.9°C, Table 8 was obtained.

[Table] Comparative Example 5 Table 9 was obtained when the same curing agent as in Example 4 was sprayed with the same curing agent and then dried at 90°C.

[Table] Example 5 A hardening agent prepared by dissolving the mixture of Example 4 in a solvent of 1,1,1-trichloroethane:ethyl alcohol in a weight ratio of 4:6 was applied to the same polyester diose as in Example 1 by spraying. Table 10 was obtained by pre-drying at 99.9°C and then main drying at 99.9°C.

[Table] Comparative Example 6 Table 11 was obtained when the same polyester dioset as in Example 5 was sprayed with the same curing agent and then dried at 90°C.

[Table] Example 6 The curing agent application rate was applied to the same polyester dioset as in Example 1 using a curing agent dissolved in the same mixed solvent as in Example 1 at a ratio of 1 molar ratio of DMIPH to 1 molar ratio of SA. A 20% cured cloth was prepared using the same treatment method as in Example 1, and the relative humidity was 30°C at 100°C.
Table 12 was obtained when processing in an atmosphere of % or more.

[Table] Comparative Example 7 Cured cloth similar to Example 6 at 100℃ and relative humidity.
When treated in an atmosphere of 30% or less, Table 13 was obtained.

【table】

Claims (1)

[Claims] 1 Molar ratio 0 to 2 relative to dimethyl isophthalate
benzoic acid or 0-hydroxybenzyl alcohol in the range of 2, in a molar ratio of 0 to 1 or 6 or more;
2-dimethyl-1,3-propanediol, 1,4-cyclohexanediol in a molar ratio of 0 to 3/4, 1,4-cyclohexanedione in a molar ratio of 0 to 1/2 or 3 or more; 0~1/
A sublimable substance consisting of a single substance or a mixture of 2-hydroxy-2-methylpropionic acid in the range of 2, and hydrocarbons, halogenated hydrocarbons, alcohols, and ethers with a boiling point range of 39.8 to 99.9°C. Spraying a temporary curing treatment liquid onto a flexible fabric, which is characterized by being a low-boiling solvent consisting of esters, ketones, and esters, which dissolves the sublimable substance, or a mixed solvent consisting of a combination thereof, or an azeotropic mixed solvent. It is characterized by a two-stage drying method in which the solvent is evaporated at a temperature lower than the melting point of dimethyl isophthalate and then treated at 68.5 to 99.9°C, which is higher than the melting point, or a first stage drying at 68.5 to 99.9°C is followed by cooling and solidifying. It is characterized by being able to freely harden to the hardness required for sewing by applying the hardening agent to the ground at a concentration of 30% or less, and after the sewing product is completed, it can be cured at 100℃ and relative humidity for cured fabrics containing 0-hydroxybenzyl alcohol. Decures in an atmosphere of 30% or more, 100-120℃ for other cured fabrics
A temporary curing spray treatment method for a flexible fabric, characterized in that the material is decured at a temperature of 100 mL to restore physical properties equivalent to those of an untreated flexible fabric.