CN111040707A - Glue for cloth dispensing machine and preparation method thereof - Google Patents

Glue for cloth dispensing machine and preparation method thereof Download PDF

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Publication number
CN111040707A
CN111040707A CN201811189471.6A CN201811189471A CN111040707A CN 111040707 A CN111040707 A CN 111040707A CN 201811189471 A CN201811189471 A CN 201811189471A CN 111040707 A CN111040707 A CN 111040707A
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Prior art keywords
glue
dispensing machine
cloth
cloth dispensing
product
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Inventor
李世利
顾雁来
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Suzhou Aimer Underwear Co ltd
Suzhou Meishanzi Garments Co Ltd
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Suzhou Aimer Underwear Co ltd
Suzhou Meishanzi Garments Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
    • C09J175/04—Polyurethanes
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/02—Non-macromolecular additives
    • C09J11/04—Non-macromolecular additives inorganic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/08—Macromolecular additives
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
    • C09J175/04—Polyurethanes
    • C09J175/06—Polyurethanes from polyesters
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
    • C09J175/04—Polyurethanes
    • C09J175/08—Polyurethanes from polyethers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C08K2003/265—Calcium, strontium or barium carbonate

Abstract

The invention discloses glue for a cloth dispensing machine and a preparation method thereof, wherein the glue for the cloth dispensing machine comprises the following components in percentage by mass: 61.5-62.0% of polyurethane prepolymer, 26.0-26.5% of ethylene-vinyl acetate copolymer, 11.0-11.5% of tackifying resin, 0.2-0.4% of filler and 0.1-0.3% of auxiliary agent. The glue for the cloth dispensing machine is suitable for an automatic dispensing machine for clothes, requires lower temperature and pressure in the process of mould pressing, does not need high temperature and high pressure, can further reduce energy consumption, further reduces production cost, does not damage cloth, does not have the problems of hardening and color change of the cloth caused by high temperature, and has wide application range; and the glue is matched with an automatic glue dispenser for clothes to produce a whole clothes product without any sewing stitches, so that the washing is more convenient, the product is comfortable and soft, has good hand feeling and air permeability, is firm in bonding and good in stability, the integral production efficiency is improved, and the production cost is further reduced.

Description

Glue for cloth dispensing machine and preparation method thereof
Technical Field
The invention relates to the technical field of adhesive manufacturing, in particular to glue for a cloth dispensing machine and a preparation method thereof.
Background
With the development of science and technology and the continuous improvement of the living standard of people, the goods output of the clothes is larger and larger, and the quality requirement of the clothes for people is higher and higher. The conventional manufacturing process of the existing clothes has two types, the first type is the traditional sewing process; the second is a process method for jointing cloth by adopting a TPU polyurethane adhesive film.
However, both of the two methods have considerable disadvantages, the first sewing method has many requirements for the types of equipment, has high requirements for manual operation skills, has many working hours for workers, and has high production cost, and the clothing product manufactured by the sewing method has obvious stitches at the joints of the cloth, has low comfort when being worn by people, can generate obvious strangulation marks, and even can abrade the leather clothing, thereby causing inflammation. On one hand, the stability of the process is not good enough, the requirement on the operating skill of staff is higher during operation, the cost of an adhesive film is also higher, and a clothing product manufactured by the process is equivalent to adding a layer of thin film between cloth and cloth, so that the original air permeability of the cloth is influenced, and the hand feeling of the product is poor and the product is hard; on the other hand, in the process method for adhering the TPU polyurethane adhesive film, the adhesive film needs to be melted to firmly adhere the fabrics together, if the processing temperature is not enough, the adhesive film is not sufficiently melted, so that the fabrics are insufficiently combined, and the risk of degumming can be caused, so that the bonding process usually needs to be achieved by adopting high temperature and applying certain pressure, and generally adopted process parameters are that the temperature is 170-2Some of the materials even need to reach 200 ℃, and the temperature causes irreversible damage to the fabric structure of the materials, so that the fabrics become hard and discolor, the energy consumption of production is high, the production cost is increased, and the environment is not favorable.
Disclosure of Invention
In view of the above, in order to overcome the defects of the prior art, the present invention aims to provide a glue for a fabric dispenser, which is suitable for an automatic dispensing machine for clothing, requires low temperature and low pressure during mold pressing, does not damage fabric, and has a wide application range.
In order to achieve the purpose, the invention adopts the following technical scheme:
the glue for the cloth dispensing machine comprises the following components in percentage by mass:
Figure RE-GDA0001935546770000021
wherein the effective content of the blending resin ethylene vinyl acetate copolymer (EVA) is 25-30%, DuPont EVA205W can be used; the auxiliary agent comprises an antioxidant, the antioxidant comprises a hindered phenol antioxidant, and the hindered phenol antioxidant comprises an antioxidant 1010 and/or an antioxidant 1076; the filler is calcium silicate and/or calcium carbonate; the tackifying resin comprises one or more of rosin resin, terpene resin and hydrogenated petroleum resin, and the hydrogenated petroleum resin is hydrogenated C5 petroleum resin, hydrogenated C9 petroleum resin or hydrogenated C5/C9 copolymer resin. Unhydrogenated petroleum resins are more susceptible to aging.
The NCO content of the polyurethane prepolymer is 3.5-4%.
Preferably, the polyurethane prepolymer is prepared from the following monomers in percentage by mass:
Figure RE-GDA0001935546770000022
wherein the polyol comprises poly-1, 6-butanediol adipate glycol (PBA), polyether polyol and polyester polyol.
The polyether polyol is preferably polyether polyol 220, i.e., the polyether polyol has a functionality of 2 and a molecular weight of 1800-.
The molecular weight of the polyester polyol is about 2000, and the polyester polyol is prepared by polymerizing dibasic acid and dihydric alcohol, wherein the molar ratio of the dibasic acid to the dihydric alcohol is 1: 1.05-1.1.
The dibasic acid is terephthalic acid and phthalic acid, the dihydric alcohol is diethylene glycol and ethylene glycol, and the molar ratio of the terephthalic acid to the phthalic acid is as follows: 1:1-1.1, wherein the molar ratio of the diethylene glycol to the ethylene glycol is as follows: 1:1.3-1.5.
The isocyanate is Toluene Diisocyanate (TDI); the chain extender is 4,4' -diaminodiphenylmethane; the catalyst is an organic tin catalyst.
The invention also provides a preparation method of the glue for the cloth dispensing machine, which comprises the following steps: adding polyester polyol, polyether polyol, a chain extender and poly-1, 6-adipic acid-butanediol ester diol into a reaction kettle according to a ratio, melting, stirring and mixing, vacuumizing at 110-120 ℃ for 0.5-3.0 h for dehydration, and keeping the vacuum degree at-0.08-0.1 MPa; then cooling to 80 ℃, adding isocyanate and a catalyst while stirring, heating to 100-120 ℃ within 30min after adding, carrying out heating, vacuumizing and defoaming reaction until no bubbles appear, and sampling to test the NCO content; when the NCO content reaches 3.5% -4.0%, obtaining a polyurethane prepolymer;
adding the ethylene-vinyl acetate copolymer, the tackifying resin, the filler and the auxiliary agent into the polyurethane prepolymer according to the proportion, continuously heating to 135-145 ℃, melting and stirring for 0.5-2h, mixing, then cooling to 100-120 ℃, and vacuumizing for 0.5-3.0 h to obtain the glue for the cloth dispensing machine.
The heating and vacuumizing reaction conditions are as follows: the temperature is 100-120 ℃, the time is 0.5-3.0 h, and the vacuum degree is-0.08-0.1 MPa
Due to the adoption of the technical scheme, compared with the prior art, the invention has the advantages that: the glue for the cloth dispensing machine can be matched with an automatic dispensing machine for clothes for use, so that the glue is sprayed at the position where the cloth needs to be attached, and then the cloth is bonded together through hot pressing at a lower temperature, the problems of high requirement on manual operation skills, insufficient product comfort level, poor air permeability and the like in the prior art are solved, and the glue has the following advantages:
1. the PUR (Polyurethane Reactive) glue disclosed by the invention has excellent bonding strength, temperature resistance, chemical corrosion resistance and aging resistance, can fully ensure the bonding fastness and stability of cloth bonding by adopting a moisture curing mode as long as the humidity of the environment is controlled, and can better ensure the bonding fastness and stability compared with the existing TPU Polyurethane film bonding process;
2. the PUR glue capable of being pressed at low temperature is adopted, so that the temperature and the pressure required in mould pressing are low, the cloth cannot be damaged, and the problems of hardening and color change of the cloth caused by high temperature in the production process of the TPU polyurethane glue film cannot be caused;
3. the glue for the cloth glue dispenser is wide in application range, is suitable for common materials of most of clothes, is suitable for various products such as home clothes, camisole, undershirts, thermal clothes and the like, can be used by the glue dispensing process, is free from constraint of stitches, and enables the products to be more concise and attractive and rich in texture;
4. the temperature and the pressure required by the glue for the cloth dispensing machine in the mould pressing process are lower, high temperature and high pressure are not required, the energy consumption can be further reduced, the production cost is further reduced, and the environmental protection call advocated by the nation is responded;
5. the glue for the cloth dispensing machine is matched with the automatic dispensing machine for the clothes to produce the whole clothes product without any sewing stitches, comfort and no marks, and the clothes product has the advantages of concise and attractive appearance, no skin irritation and more convenient cleaning, and solves the problem of the marks caused by the traditional sewing process;
6. according to the invention, the glue for the cloth glue dispenser is matched with the automatic glue dispenser for clothes to use and glue the cloth cut pieces together in a dispensing manner, and the air permeability of the cloth is reserved among the point-shaped bonded gaps, so that the problems of poor air permeability and poor hand feeling among fabrics in the glue film bonding process are solved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a TGA test spectrum of a glue for a cloth dispensing machine in a preferred embodiment of the present invention;
FIG. 2 is a nuclear magnetic hydrogen spectrum diagram of glue for a cloth dispensing machine in the preferred embodiment of the present invention;
FIG. 3 shows the test results of X-ray fluorescence spectrum analysis of glue for a cloth dispenser in accordance with the preferred embodiment of the present invention;
FIG. 4 is a PGC-MS test spectrum of the glue for the cloth dispensing machine in the preferred embodiment of the present invention.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not a whole embodiment. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
All materials in the following examples are commercially available.
Embodiment A glue for a cloth dispensing machine
The glue for the cloth dispensing machine in the embodiment is composed of the following raw materials in parts by weight:
Figure RE-GDA0001935546770000041
wherein the effective content of the blending resin ethylene vinyl acetate copolymer (EVA) is 25-30%, DuPont EVA205W can be used. The calcium silicate may be replaced by or mixed with calcium carbonate. The hydrogenated C9 petroleum resin may be replaced by hydrogenated C5 petroleum resin or hydrogenated C5/C9 copolymer resin, or by rosin resin, terpene resin, etc.
The NCO content in the polyurethane prepolymer is 3.5-4%.
Example two cloth glue machine glue
The glue for the cloth dispensing machine in the embodiment is composed of the following raw materials in parts by weight:
Figure RE-GDA0001935546770000051
wherein the effective content of the blending resin ethylene vinyl acetate copolymer (EVA) is 25-30%, DuPont EVA205W can be used. The calcium silicate may be replaced by or mixed with calcium carbonate. The hydrogenated C9 petroleum resin may be replaced by hydrogenated C5 petroleum resin or hydrogenated C5/C9 copolymer resin, or by rosin resin, terpene resin, etc.
The NCO content in the polyurethane prepolymer is 3.5-4%.
Example Triurethane prepolymer
The polyurethane prepolymers in examples one and two were prepared from the following monomers in parts by weight:
Figure RE-GDA0001935546770000052
wherein the polyether polyol 220, i.e. the polyether polyol has a functionality of 2 and a molecular weight of 1800-.
The molecular weight of the polyester polyol is about 2000, and the polyester polyol is polymerized by dibasic acid and dihydric alcohol, wherein the dibasic acid in the embodiment is terephthalic acid and phthalic acid, the dihydric alcohol is diethylene glycol and ethylene glycol, and n (terephthalic acid): n (phthalic acid): n (diethylene glycol): n (ethylene glycol) 23:24:22: 31.
Example tetrapolyurethane prepolymer
The polyurethane prepolymers in examples one and two were prepared from the following monomers in parts by weight:
Figure RE-GDA0001935546770000053
the polyether polyol 220, polyether polyol has a functionality of 2 and a molecular weight of 1800-2200.
The molecular weight of the polyester polyol is about 2000, and the polyester polyol is polymerized by dibasic acid and dihydric alcohol, wherein the dibasic acid in the embodiment is terephthalic acid and phthalic acid, the dihydric alcohol is diethylene glycol and ethylene glycol, and n (terephthalic acid): n (phthalic acid): n (diethylene glycol): n (ethylene glycol) is 24:25:20: 31.
Example five polyurethane prepolymers
The polyurethane prepolymers in examples one and two were prepared from the following monomers in parts by weight:
Figure RE-GDA0001935546770000061
the polyether polyol 220, polyether polyol has a functionality of 2 and a molecular weight of 1800-2200.
The molecular weight of the polyester polyol is about 2000, and the polyester polyol is polymerized by dibasic acid and dihydric alcohol, wherein the dibasic acid in the embodiment is terephthalic acid and phthalic acid, the dihydric alcohol is diethylene glycol and ethylene glycol, and n (terephthalic acid): n (phthalic acid): n (diethylene glycol): n (ethylene glycol) 24:24:22: 30.
Example preparation method of glue for six-cloth dispensing machine
The embodiment provides a preparation method of glue for a cloth dispensing machine as in the first or second embodiment, including the following steps:
adding polyester polyol, polyether polyol, a chain extender and poly (1, 6-adipate-butanediol) glycol into a reaction kettle according to the proportion of the third embodiment, the fourth embodiment or the fifth embodiment, melting, stirring and mixing, vacuumizing at 110-120 ℃ for 0.5-3.0 h for dehydration, and keeping the vacuum degree at-0.08-0.1 MPa; then cooling to 80 ℃, adding Toluene Diisocyanate (TDI) and an organic tin catalyst while stirring, heating to 100-120 ℃ within 30min after adding, carrying out heating, vacuumizing and defoaming reaction until no bubbles appear, and sampling to test the NCO content; when the NCO content reaches 3.5% -4.0%, the polyurethane prepolymer is obtained. The heating and vacuumizing conditions are as follows: the temperature is 100-120 ℃, the time is 0.5-3.0 h, and the vacuum degree is-0.08-0.1 MPa
And then adding the ethylene-vinyl acetate copolymer, the tackifying resin, the filler and the auxiliary agent into the polyurethane prepolymer according to the proportion of the first embodiment or the second embodiment, continuously heating to 135-145 ℃, melting and stirring for 0.5-2h, mixing, cooling to 100-120 ℃, and vacuumizing for 0.5-3.0 h to obtain the glue for the cloth dispensing machine.
EXAMPLE seven glue test
Viscosity of glue
The glue prepared in example six was tested for viscosity and the results are shown in the following table:
TABLE 1 viscosity of the glue
Temperature (. degree.C.) Viscosity (cps)
130 37500
150 23650
170 14600
The viscosity of this glue cooperates the cloth point gum machine to use for the glue temperature that sprays on the cloth is low, later carries out the low temperature pressfitting again, has avoided because the cloth that high temperature leads to hardens, the problem of discolouing.
Physical and chemical information of glue
1) Ash content: 0.27% (800 ℃ muffle furnace, 12h constant weight);
2) NCO value: 2.26% (titration value).
(III) TGA test, Nuclear magnetic, X-ray fluorescence Spectroscopy, PGC-MS test
The glue prepared in example six was subjected to TGA test, nuclear magnetic, X-ray fluorescence spectroscopy (XRF), and PGC-MS test, and the test results are shown in fig. 1 to fig. 4, respectively.
Example eight with the cooperation of cloth point gum machine use carry out the preparation of clothing
The glue prepared in the sixth embodiment is applied to an automatic glue dispenser for clothing production, and comprises the following steps: cutting equipment prepares the cloth cut-parts according to the clothing style of setting for, the workstation seted up with cloth cut-parts assorted recess, conveying equipment carries the cloth cut-parts to the recess of workstation in, install dispensing equipment on the workstation, dispensing equipment carries out the point to the cloth cut-parts and glues the operation, possesses a plurality of glue point on making the cloth cut-parts, laminating equipment carries to the moulding device after laminating with the cloth cut-parts that another piece corresponds the cloth cut-parts after the point is glued and carries out the mould pressing fixedly, prepares into required clothing.
The clothing product made of the glue for the cloth glue dispensing machine in the embodiment has the following advantages: the cloth is made of double-sided traceless super-elastic fabric, is soft, light and thin, and is close-fitting to a cotton layer as if the skin is the second layer; the utility model is convenient to wear in various occasions and is convenient to be put on; the integral type of no steel ring, zero pressure, the whole product has no any sewing stitch, and the wearing is comfortable; the washing label is printed in a non-sewing way, so that no sewing is performed, and the skin has no irritation; the detachable breast pad is convenient to clean, and the water drop type cover cup is designed to support, care and shape in one step; is suitable for all the year round.
Comparative example 1
Comparative example one was made using the same fabric and same product design as in example eight, but using the conventional TPU polyurethane film lamination process when the different cut pieces were adhered to each other.
Example nine data comparison and results analysis
In order to ensure the reliability of the dispensing process and the quality of the dispensing product, a large number of product performance tests are performed in the development process. In this example, the performance of the garment products manufactured by the two processes in the eighth example and the first comparative example was analyzed.
(I) Peel Strength
Cutting the two layers of cloth adhered together into sample size of 17cm × 0.6cm/0.8cm/1cm, and selecting the thickness of the adhesive layer or film to be 50 + -5 μm. Adjusting the distance between an upper clamp and a lower clamp of the tensile testing machine to be 50mm, and adjusting the traction speed to be 200 mm/min; stripping a sample by 50mm, clamping an upper layer and a lower layer of the sample into an upper clamp and a lower clamp of a tensile machine respectively, and enabling a stripping line to be located in the middle of the upper clamp and the lower clamp; starting a tensile machine, and recording each peak value within the length of 100mm after the sample is peeled; the average of the 40 high peaks and 40 low peaks was taken as the final test result.
Table 2 peel strength test data for the eight example and the first comparative example products
Figure RE-GDA0001935546770000081
As can be seen from table 2, in the eighth example, the peel strength of the product produced by using the glue and the dispensing process in the sixth example when the sample width is 6mm exceeds 10N, and the larger the test sample width is, the larger the peel strength is, and under the same width condition, the peel strength of the product produced by using the glue and the dispensing process in the sixth example is obviously better than that of the product produced by using the conventional TPU polyurethane adhesive film.
(II) Water washing degumming test
The cloth at the joint of the product in the eighth embodiment and the product in the first comparative example is cut into the same size, the cloth is dried in the sun for 1h (the drying temperature is 40 ℃) after being washed for 30min at 800r/min at the water temperature of 30 ℃ in a washing machine, and the steps are repeated for 30 times, so that the product sample in the eighth embodiment is intact and has no degumming phenomenon, and the product sample in the first comparative example has serious degumming phenomenon. Therefore, the bonding stability of the product produced by adopting the dispensing process is obviously superior to that of the product produced by the conventional TPU polyurethane adhesive film.
Since the above experimental conditions did not result in the degumming of the product sample of example eight, the following tests were carried out: after washing for 30min at 800r/min in the washing machine, sun drying for 1.5h (sun drying temperature is 50 ℃) and repeating the steps for 30 times, the result shows that the product sample in the eighth embodiment is still intact and has no degumming phenomenon. Therefore, the bonding stability of the product produced by the glue and the dispensing process in the sixth embodiment is excellent and reliable.
(III) air permeability of the product
The air permeability of the products produced by the process of example eight and the process of comparative example one were tested according to GB/T10655 "determination of air permeability of porous elastomeric materials of high polymers", 5 parallel experiments were carried out on each material, the results were averaged and the results are shown in Table 3.
Table 3 test results for air permeability of the eight and first products of the comparative example
Figure RE-GDA0001935546770000091
As can be seen from table 3, the average air permeability of the example eight is greater than that of the comparative example one, which shows that the air permeability of the product produced by the glue and the dispensing process of the example eight in the sixth example is significantly better than that of the product produced by the conventional TPU polyurethane adhesive film of the comparative example one.
Moisture permeability of the product
The moisture permeability of the products produced by the process of example eight and the process of comparative example one were tested according to GB/T12704 textile Fabric moisture permeability test method, 2 tests were carried out on each material, the results were averaged, and the test results are shown in Table 4.
Table 4 test results of moisture permeability of the eighth and first comparative products
Figure RE-GDA0001935546770000092
As can be seen from table 4, the moisture permeability of the product produced by the glue and the dispensing process in example eight is substantially better than that of the product produced by the conventional TPU polyurethane adhesive film in comparative example one under the same time length, and the longer the time, the more obvious the difference.
(V) flexural Properties of the product
The bending performance in both directions was measured using a KES-F2 fabric stylizer according to GB/T18318 "determination of bending Performance of textiles" for the products produced by the process of example eight and comparative example one, and the results are shown in Table 5.
TABLE 5 test results of bending Properties of the eight examples and the first comparative example
Figure RE-GDA0001935546770000101
The bending rigidity B reflects the capability of the product to resist deformation, and the larger the value of the bending rigidity B, the more deformation can be resisted. As can be seen from table 5, the bending stiffness B of the product produced by the glue and the dispensing process in example eight in example six is significantly greater than that of the product produced by the conventional TPU polyurethane film in comparative example one, so that the product produced by the dispensing process is more resistant to deformation. The bending hysteresis 2HB indicates the bending hysteresis of the product, and the smaller the value of the bending hysteresis 2HB is, the better the recovery capability of the product is represented, i.e., the better the elasticity is. As can be seen from table 5, the bending delay 2HB in the warp direction of the product produced by the glue and the dispensing process in example eight according to example six is significantly smaller than that of the product produced by the conventional TPU polyurethane film in comparative example one, so the recovery capability, i.e. the elasticity, of the product produced by the dispensing process is better.
Compression Properties of (VI) product
The compression properties of the products produced by the process of example eight and the process of comparative example one were tested according to GB/T24442 "determination of compression Properties of textiles", the results of which are shown in Table 6.
Table 6 results of testing compression properties of the eight and first products of example and comparative example
Compression ratio work WC (N cm/cm)2)
Comparative example 1 0.261
Example eight 0.264
The compression ratio work represents the fluffiness degree of the product, and the larger the compression ratio work value is, the fluffier the product is. As can be seen from table 6, the compression ratio work of the product produced by the glue and the dispensing process in the sixth example is greater than that of the product produced by the conventional TPU polyurethane adhesive film in the first comparative example, so that the product produced by the dispensing process is bulkier.
(VII) biaxial tensile Properties of the product
The Warp (WP) direction and Weft (WF) direction of the products produced by the processes of the example eight and the comparative example one are tested by using a KES-G2 fabric biaxial stretching machine, and the experimental result shows that the tensile force of the Warp (WP) direction and the Weft (WF) direction of the product produced by the glue of the example six and the glue dispensing process of the example eight is obviously lower than that of the Warp (WP) direction and the Weft (WF) direction of the product produced by the conventional TPU polyurethane adhesive film of the comparative example one, which indicates that the hand feeling of the product produced by the glue dispensing process is good.
(VIII) softness, air permeability and comfort of the product
The products produced by the processes of the eighth embodiment and the first comparative example are tried on by real people, and the hardness, the air permeability and the comfort of the products are judged, and the results are shown in the following table.
Table 7 results for softness, breathability and comfort of the eight example and the first comparative example products
Figure RE-GDA0001935546770000111
It can be seen from the data in tables 2-7 that the glue and the dispensing process in the sixth embodiment are soft, good in hand feeling, breathable and comfortable to wear in the place where the two fabric cut pieces are attached in the eighth embodiment, while the conventional TPU polyurethane film is hard, poor in hand feeling, air-impermeable and poor in comfort to wear in the place where the two fabric cut pieces are attached in the first comparative example. Therefore, the hardness, air permeability and comfort of the product produced by adopting the dispensing process at the joint of the two fabric cut pieces are superior to those of the product produced by adopting the conventional TPU polyurethane film.
The glue for the cloth dispensing machine is suitable for an automatic dispensing machine for clothes, requires lower temperature and pressure in the process of mould pressing, does not need high temperature and high pressure, can further reduce energy consumption, further reduce production cost, does not damage cloth, does not have the problems of hardening and color change of the cloth caused by high temperature, and has wide application range; and the glue is matched with an automatic glue dispenser for clothes to produce a whole clothes product without any sewing stitches, so that the washing is more convenient, the product is comfortable and soft, has good hand feeling and air permeability, is firm in bonding and good in stability, the integral production efficiency is improved, and the production cost is further reduced.
The above embodiments are merely illustrative of the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the content of the present invention and implement the invention, and not to limit the scope of the invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the scope of the present invention.

Claims (10)

1. The glue for the cloth dispensing machine is characterized by comprising the following components in percentage by mass:
Figure FDA0001827111220000011
2. the glue for cloth dispensing machine of claim 1, wherein the auxiliary agent comprises an antioxidant; the filler comprises calcium silicate and/or calcium carbonate; the tackifying resin comprises one or more of rosin resin, terpene resin and hydrogenated petroleum resin.
3. The glue for the cloth dispensing machine according to claim 1, wherein the NCO content of the polyurethane prepolymer is 3.5% -4%.
4. The glue for the cloth dispensing machine according to claim 1, wherein the polyurethane prepolymer is prepared from the following monomers in percentage by mass:
Figure FDA0001827111220000012
5. the glue for cloth dispensing machine of claim 4, wherein the polyol comprises poly-1, 6-butylene adipate glycol, polyether polyol, polyester polyol.
6. The glue for cloth dispensing machine as claimed in claim 5, wherein the polyether polyol has a functionality of 2 and a molecular weight of 1800-.
7. The glue for the cloth dispensing machine according to claim 5, wherein the polyester polyol is polymerized from dibasic acid and dihydric alcohol, and the molar ratio of the dibasic acid to the dihydric alcohol is 1: 1.05-1.1.
8. The glue for cloth dispensing machine according to claim 7, wherein said dibasic acid is terephthalic acid and phthalic acid, said dihydric alcohol is diethylene glycol and ethylene glycol, and the molar ratio of terephthalic acid to phthalic acid is: 1:1-1.1, wherein the molar ratio of the diethylene glycol to the ethylene glycol is as follows: 1:1.3-1.5.
9. The glue for cloth dispensing machine according to claim 4, wherein the isocyanate is toluene diisocyanate; the chain extender is 4,4' -diaminodiphenylmethane; the catalyst is an organic tin catalyst.
10. A method for preparing a glue for a cloth dispensing machine according to any one of claims 1 to 9, comprising the steps of: adding polyester polyol, polyether polyol, a chain extender and poly (1, 6-adipate-butanediol) glycol into a reaction kettle according to a ratio, melting, stirring and mixing, vacuumizing at 110-120 ℃ for dehydration, and keeping the vacuum degree at-0.08 to-0.1 MPa; then cooling, adding isocyanate and a catalyst while stirring, heating after adding, carrying out heating, vacuumizing and defoaming reaction until no bubbles appear, and sampling to test the NCO content; when the NCO content reaches 3.5% -4.0%, obtaining a polyurethane prepolymer;
adding the ethylene-vinyl acetate copolymer, the tackifying resin, the filler and the auxiliary agent into the polyurethane prepolymer according to the proportion, continuously heating, melting, stirring and mixing, and then cooling and vacuumizing to obtain the glue for the cloth dispensing machine.
CN201811189471.6A 2018-10-12 2018-10-12 Glue for cloth dispensing machine and preparation method thereof Pending CN111040707A (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101309947A (en) * 2005-09-30 2008-11-19 Sika技术股份公司 Moisture-hardened polyurethane compositions containing compounds comprising aldimine
CN101443428A (en) * 2006-06-30 2009-05-27 Sika技术股份公司 Humidity-reactive hotmelt adhesive with increased open time
CN102977838A (en) * 2012-12-22 2013-03-20 昆山天洋热熔胶有限公司 Moisturecuring polyurethane hot melt adhesive for lining cloth and preparation method of moisturecuring polyurethane hot melt adhesive
WO2016045927A1 (en) * 2014-09-22 2016-03-31 Sika Technology Ag Storage-stable, moisture-curing polyurethane adhesive with rapid adhesive formation on glass
CN107090268A (en) * 2017-06-09 2017-08-25 南通恒华粘合材料科技有限公司 Fabric is compound with high moisture-inhibiting monocomponent polyurethane hot melt adhesive and preparation method thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101309947A (en) * 2005-09-30 2008-11-19 Sika技术股份公司 Moisture-hardened polyurethane compositions containing compounds comprising aldimine
CN101443428A (en) * 2006-06-30 2009-05-27 Sika技术股份公司 Humidity-reactive hotmelt adhesive with increased open time
CN102977838A (en) * 2012-12-22 2013-03-20 昆山天洋热熔胶有限公司 Moisturecuring polyurethane hot melt adhesive for lining cloth and preparation method of moisturecuring polyurethane hot melt adhesive
WO2016045927A1 (en) * 2014-09-22 2016-03-31 Sika Technology Ag Storage-stable, moisture-curing polyurethane adhesive with rapid adhesive formation on glass
CN107090268A (en) * 2017-06-09 2017-08-25 南通恒华粘合材料科技有限公司 Fabric is compound with high moisture-inhibiting monocomponent polyurethane hot melt adhesive and preparation method thereof

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Application publication date: 20200421