CN112759921A

CN112759921A - Modified nylon material capable of being dyed together with clothes, preparation method thereof and zipper product

Info

Publication number: CN112759921A
Application number: CN201911071121.4A
Authority: CN
Inventors: 王鑫
Original assignee: Zhejiang Weixing Industrial Development Co Ltd
Current assignee: Zhejiang Weixing Industrial Development Co Ltd
Priority date: 2019-11-05
Filing date: 2019-11-05
Publication date: 2021-05-07
Anticipated expiration: 2039-11-05
Also published as: CN112759921B

Abstract

The invention provides a modified nylon material capable of being dyed together with clothes, a preparation method thereof and a zipper product, wherein the modified nylon material is prepared by melting and injection molding a mixture, and the mixture comprises the following components in parts by mass: 72-83% of PA 6; 17-28% of glass fiber; 0.05-0.25% of antioxidant; 0.1 to 0.5% of a lubricant. The modified nylon material has quite excellent comprehensive properties, such as good dimensional stability, good self-lubricating property and wear resistance, good injection molding property and appearance, good coloring property and the like, so that the material can be used for manufacturing zipper teeth, upper and lower stoppers and sliders. After the zipper is manufactured, the zipper is directly sewn on the clothes and dyed together, and the color concentration of zipper components such as the dyed cloth belt, the clothes, the teeth and the like is uniform, so that more and higher requirements of consumers can be met.

Description

Modified nylon material capable of being dyed together with clothes, preparation method thereof and zipper product

Technical Field

The invention relates to the technical field of zippers, in particular to a modified nylon material capable of being dyed together with clothes, a preparation method thereof and a zipper product.

Background

The zipper is a component of the clothing accessory, and is widely applied to daily wearing of clothing by people. The zipper is composed of a cloth belt (comprising a woven belt and a band rib), zipper teeth (also called teeth), a pull head, an upper stop, a lower stop (a front stop and a rear stop), a locking piece and the like, and articles such as clothing materials and the like are combined or separated mainly by means of the continuously arranged zipper teeth. As shown in FIG. 1, a general zipper has two pieces of woven tapes fixed to a bottom stop 1; the lower stop is a stopper for limiting the slider from sliding out of the fastener tape when the fastener chain is pulled open, and preventing the fastener tapes on both sides from being completely separated. Each cloth belt is provided with a row of teeth 2, and the two rows of teeth are arranged in a staggered way; the zipper teeth at two sides are clamped by the pull head, and the zipper teeth at two sides can be mutually meshed or separated by pulling and sliding. The pull head comprises a pull piece 3 and a base 4, wherein the pull piece 3 is connected with the base 4. The other end of the zipper is provided with an upper stop 5 corresponding to the lower stop 1; the upper stop is a stopper for limiting the slider from sliding out of the fastener tape when the fastener chain is pulled and closed.

Wherein the zipper teeth directly determine the side pull strength of the zipper; and the moving part slider and the upper stop and the lower stop of the stop piece need to have certain mechanical strength. The cloth belt is a flexible belt woven by a series of processes of pattern threading, warping and the like of yarns according to patterns and is used for bearing components such as chain teeth and the like. At present, nylon yarn is one of the main raw materials of a zipper cloth belt; the material for manufacturing the pull head and the tooth on the market is mainly POM plastic (polyformaldehyde). The zipper component has rich colors and various functions, has a decorative effect and can play a certain functional role, such as flame retardance and the like. With the diversified application of the slide fastener, the functionality thereof is more and more prominent, and different conventional demands are made on the use mode of the slide fastener.

For example, the zipper with the original color (without dyeing treatment) is dyed together with the clothes, so that the colors of the zipper and the clothes are unified. Especially in the sports wear category, such as light and thin skin clothes, sun-proof clothes, etc., the garment manufacturer usually sews the zipper directly on the light and thin clothes, and then dyes the clothes together (known as garment dyeing in the industry), and the dyeing method can solve the problem that the color of the fabric of the clothes is the same as that of the zipper.

However, the pull head and the tooth element made of the existing POM material are not easy to color, and after the garment is dyed, the dyeing effect is difficult to be unified with the color concentration of the cloth belt and the garment material, so that the application is not facilitated.

Disclosure of Invention

In view of the above, the present application provides a modified nylon material capable of being dyed together with a garment, a method for preparing the same, and a zipper product, and the modified nylon material provided by the present invention has good strength and dyeing coloring property, is used as a component such as a zipper tooth, and has a dyeing effect consistent with that of a fabric such as a cloth tape when a zipper garment is dyed.

The invention provides a modified nylon material capable of being dyed together with clothes, which is prepared by melting and injection molding a mixture, wherein the mixture comprises the following components in parts by mass:

72-83% of PA 6;

17-28% of glass fiber;

0.05-0.25% of antioxidant;

0.1 to 0.5% of a lubricant.

Preferably, the melting temperature of the PA6 is 190-210 ℃; the glass fiber is a long glass fiber.

Preferably, the antioxidant is antioxidant 225; the lubricant is ethylene bis stearamide and/or pentaerythritol stearate.

The invention provides a preparation method of a modified nylon material capable of being dyed together with clothes, which comprises the following steps:

mixing 72-83% of PA6, 0.05-0.25% of antioxidant and 0.1-0.5% of lubricant to obtain a mixture;

and melting the mixture, adding 17-28% of glass fiber, and performing injection molding and extrusion to obtain the modified nylon material.

Preferably, the PA6 is a dried component; the melting temperature of the mixture is 180-300 ℃.

Preferably, the mixture is melted by adopting a die of zipper teeth, and the melting temperature is 180-230 ℃; or melting the mixture by using a die with an upper stop and a lower stop, wherein the melting temperature is 200-280 ℃; or, the mixture is melted by adopting a mold of a pull head, and the melting temperature is 240-300 ℃.

The invention provides a zipper product, which comprises a resin component, wherein the resin component is made of the modified nylon material.

Compared with the existing POM zipper, the novel material for zipper products is obtained by adding a certain amount of glass fiber into PA 6. The modified nylon material has quite excellent comprehensive properties, such as good dimensional stability, good self-lubricating property and wear resistance, good injection molding property and appearance, good coloring property and the like, so that the material can be used for manufacturing zipper teeth, upper and lower stoppers and sliders. After the zipper is manufactured, the zipper is directly sewn on the clothes and dyed together, and the color concentration of zipper components such as the dyed cloth belt, the clothes, the teeth and the like is uniform, so that more and higher requirements of consumers can be met.

Drawings

FIG. 1 is a schematic view showing the structure of a conventional slide fastener;

FIG. 2 is a schematic view showing the structure of a slide fastener in example 1 of the present invention;

FIG. 3 is a schematic view showing the structure of a slide fastener in embodiment 2 of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. 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.

72-83% of PA 6;

17-28% of glass fiber;

0.05-0.25% of antioxidant;

0.1 to 0.5% of a lubricant.

The modified nylon material provided by the invention has the characteristics of good strength, dyeing coloring property and the like, is used as components such as zipper teeth and the like, has the same dyeing effect with cloth belts and garment materials when the zipper garment is dyed, and is beneficial to application.

The modified nylon material can realize a better dyeing effect when being dyed together with clothes, and is obtained by melting and injection molding of a mixture. In the invention, the mixture comprises 72-83% of PA6 by mass, preferably 75-80%. Nylon 6(PA6, polyamide 6) is prepared by polymerizing caprolactam monomers, and has the characteristics of no toxicity and light weight. The material also has excellent mechanical strength, wear resistance and better corrosion resistance, and is important engineering plastic. With the advancement of the times, higher requirements are imposed on the performance of PA6, such as higher rigidity, heat resistance, fatigue resistance, and the like. In the embodiment of the invention, the melting temperature of the PA6 is 190-210 ℃.

The invention mainly adds a certain amount of glass fiber into PA6 to enhance the performance of the material; namely, the mixture comprises 17-28% by mass of glass fibers. The glass fiber is glass fiber for short, and the glass fiber has the characteristics of temperature resistance, flame retardance, corrosion resistance, heat insulation, high tensile strength and good electrical insulation. The glass fiber reinforced material can be marked as PA6-GF, the performance of a PA6-GF product meets the use requirements in the aspects of industry and daily life, has good mechanical performance and light weight, and is widely applied to multiple parts such as automobile engine parts, electric parts, automobile body parts, safety airbags and the like. It is recognized by various large automobile manufacturers while maintaining the aesthetic appearance of the vehicle.

The glass fiber-added modified nylon material is applied to injection-molded zippers and has quite excellent comprehensive performance; the material can be used for manufacturing zipper teeth, upper and lower stops, pull tabs and pull tab bases due to the properties of the material including good dimensional stability, good self-lubricating property and wear resistance, good injection molding property and appearance and good coloring property.

After the zipper is made of the modified nylon material, the zipper is directly sewn on clothes and dyed together, and the color concentration of zipper components such as a dyed cloth belt, the clothes, teeth and the like is uniform. Wherein, if the addition amount of the glass fiber exceeds 28 percent, for example, 30 percent or even 50 percent of glass fiber is added, the dyeing color-eating property of the modified nylon material is smaller, and the color is very light; and the addition amount is less than 17 percent, and the modified nylon material is too soft, so that the strength is difficult to ensure the application in the zipper. In the embodiment of the invention, the glass long fiber nylon 6 (the melting temperature of the nylon 6 is 190-210 ℃) is more suitable for processing of garment dyeing.

In the invention, the preparation of the mixture of the modified nylon material comprises the following steps: 0.05-0.25% of antioxidant; 0.1 to 0.5% of a lubricant. Preferably, the antioxidant is antioxidant 225, which is a complex of antioxidant 1010 and antioxidant 168. The embodiment of the invention can adopt an antioxidant 225 produced by Wuhan Xinzhongcheng science and technology Limited, wherein the antioxidant 168 accounts for 45-55% by mass, and the antioxidant 1010 accounts for 45-55% by mass, and the thermal degradation and the oxidative degradation of the polymer are effectively inhibited mainly by the action of the two antioxidants. The lubricant is preferably Ethylene Bis Stearamide (EBS) and/or pentaerythritol stearate (PETS), and the mass fraction of the lubricant is preferably 0.2-0.4%.

The novel material obtained by melting and injection molding the mixture is the modified nylon material, wherein the glass fiber accounts for 17-28%. Specifically, the tensile strength of the modified nylon material is 110-130MPa, the bending strength is 150-200MPa, the notched impact strength of the cantilever beam is 150-200MPa, and the thermal deformation temperature is 200-280 ℃.

The embodiment of the invention provides a preparation method of a modified nylon material capable of being dyed together with clothes, which comprises the following steps:

The preparation process of the embodiment of the invention comprises the following steps: drying → primary mixing → secondary feeding → melting → injection molding and extrusion. The amounts and kinds of the raw materials such as PA6 and antioxidant are as described above. The present invention preferably dries the PA6 starting material to give a dried PA6 component. The drying step is also called as material drying, and specifically, the raw material PA6 is put into an oven for processing. Drying treatment before processing requires special attention: if the humidity is more than 0.2%, the material should be dried at 80-90 deg.C for 15-17 hours, and if the material is exposed in air for more than eight hours, the material should be dried at 100-110 deg.C for 8-9 hours.

According to the raw material formula, the embodiment of the invention carries out preliminary mixing: PA6, antioxidant and lubricant were mixed to give a mixture. And setting a certain melting temperature, stirring and fusing the mixture, adding a proper amount of glass fiber in the secondary feeding process, and performing injection molding, cooling and molding to obtain the modified nylon material.

Wherein the melting temperature of the mixture can be 180-300 ℃. In some embodiments of the invention, the mixture is melted by using a mold of zipper teeth, the melting temperature is 180-230 ℃, and the pressure can be 70-150 kg. In some embodiments of the invention, the mixture is melted by using a mold with an upper stop and a lower stop, the melting temperature is 200-280 ℃, and the pressure can be 60-100 kg.

In other embodiments of the invention, the mixture is melted by using a mold of a pull head, the melting temperature (injection molding temperature) is 240-300 ℃, and the pressure can be 40-80 kg; the time of each die is 70-90 seconds. And (3) obtaining a semi-finished product of the pull head after molding, trimming the flash on the semi-finished product of the pull head, cleaning surface impurities, and finally putting the semi-finished product of the pull head into an oven for baking at the temperature of preferably 120-.

According to the embodiment of the invention, the prepared teeth, the upper stop, the lower stop and the pull head can be assembled, so that the applied zipper product can be obtained. The invention also provides a zipper product which comprises the resin component, wherein the resin component is made of the modified nylon material. The resin component can be teeth, upper and lower stoppers or sliders, and can also be any combination of the three. The invention has no special limitation on the structural size and the like of the components such as the teeth, the upper stop and the lower stop, and the like, and can be realized by adopting the components commonly used in the field. Specifically, the zipper product may be a resin closed end zipper. In addition, the present invention also has no particular limitation on the tape of the zipper product.

In the embodiment of the invention, the zipper product is directly sewn on the clothes and dyed together. The dyeing is generally carried out by adopting acid dye, and after the dyeing is finished, the color concentration of the dyed cloth belts, the dyed clothes, the dyed teeth and other zipper components is uniform, so that more and higher requirements of consumers can be met.

For further understanding of the present application, the modified nylon material capable of being co-dyed with clothes, the preparation method thereof and the zipper product provided by the present application will be specifically described below with reference to examples. It should be understood, however, that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention, which is defined by the following examples.

The starting materials in the following examples are all commercially available products.

Example 1

(1) Putting the PA6 raw material (the melting temperature is 190-210 ℃) into an oven for drying, keeping the temperature at 80-110 ℃ and the time for 4-6 hours, and ensuring that the material does not contain moisture.

Adding materials into a machine by adopting a special model of No. 3 tooth, and mixing 75% of dried PA6, 0.25% of antioxidant 225 (purchased from Wuhan Xinzhongcheng science and technology Co., Ltd.) and 0.25% of lubricant (EBS/PETS, the specific gravity of the two high-temperature lubricants is 1:1) to obtain a mixture; the temperature of the machine is 190 ℃ and 220 ℃, the pressure is 70-100kg, the draft angle is 3-8 ℃, and the time of each mold is about 15-25 seconds; stirring and fusing the mixture, adding 24.5% of glass fiber (988A/635B/5301HP, 998A belonging to a universal type, 635B being a T635B universal type, 5301HP being composite glass fiber), cooling by a water tank, and finally forming to obtain a semi-finished tooth product; and (4) washing the teeth of the semi-finished product according to the length of 20cm, wherein the speed is 20-30 strips/min, and obtaining a finished product of the teeth.

(2) Putting the PA6 raw material (the melting temperature is 190-210 ℃) into an oven for drying, keeping the temperature at 80-110 ℃ and keeping the time for 2-3 hours.

The separating machine stops up and down: a 3# closed tail die is adopted, and the used mixture is the same as the tooth; the temperature of the machine is adjusted to 200 ℃ and 280 ℃, the pressure is 60-80kg, and the time of each mould is about 10-20 seconds, so as to obtain the upper stop component and the lower stop component.

(3) The production process of the pull head comprises the following steps: baking → injection molding → trimming → washing → baking;

the method specifically comprises the following steps: drying the material at 80-110 deg.c for 4-6 hr. The used mixture is the same as the tooth, the injection molding temperature is 240-300 ℃, the pressure is 40-80kg, the molding time is about 70-90 seconds, and a semi-finished product is obtained after molding; trimming the flash on the semi-finished product of the pull head, cleaning impurities on the surface, and finally putting the semi-finished product of the pull head into an oven at the temperature of 120-.

(4) The teeth, the upper and lower stoppers, the slider, and the like prepared above were assembled to obtain a 3# resin closed end slide fastener shown in fig. 2. Wherein, the puller is manually penetrated at the speed of 30-40 particles per minute; cutting with a full-automatic cutting machine at a speed of 60-80 strips per minute. In fig. 2, 1 is a lower stop, 2 is teeth, 3 is a pull tab, 4 is a base, and 5 is an upper stop. The width of the zipper tape is 24mm, and the material is nylon.

(5) Coloring the obtained zipper with acid dye in a dye vat at 80-100 deg.C, and standing for 2-3 hr; the dye type is as follows: acid dyes (commercially available, black); the dosage is as follows: 7-13g of 1kg of cloth belt dye; the technological parameters are as follows: water temperature of 70-100 ℃ and dyeing heat preservation time of 1-2 hours. The color of the tooth and other parts and the cloth belt can be basically uniform, and a dark color and a light color can not appear.

Moreover, the invention carries out color fastness detection, and the detection method comprises the following steps: placing in an industrial washing machine, and rinsing with 30-50 deg.C water for 35-60 min. The detection result is as follows: the washing detection can reach the level 4 of the textile industry standard.

In addition, the strength detection results of the obtained zipper are as follows:

TABLE 1 zipper Strength results (unit: N) for inventive examples

	Horizontal pulling strength	Strong force of upper stop	Strength of lower stop
				3# zipper	290.3	72.4	61.7
8# zipper	550.6	180.6	120.3

Example 2

Feeding the mixture in a machine by using a mold for specially-made No. 8 teeth, and mixing 80% of dried PA6, 0.1% of antioxidant 225 (same as example 1) and 0.1% of lubricant (EBS/PETS, same as example 1) to obtain a mixture; the temperature of the machine is 190 ℃ and 220 ℃, the pressure is 90-150kg, the draft angle is 5-10 ℃, and the time of each mold is about 25-40 seconds; stirring and fusing the mixture, adding 19.8% of glass fiber (988A/635B/5301HP) at the same time, cooling by a water tank, and finally forming to obtain a semi-finished product of the tooth; and (4) washing the teeth of the semi-finished product according to the length of 20cm at the speed of 15-25 strips/min to obtain the finished product of the teeth.

The separating machine stops up and down: an 8# closed tail die is adopted, and the used mixture is the same as the tooth; the temperature of the machine is adjusted to 200 ℃ and 280 ℃, the pressure is 80-100kg, and the time of each mould is about 15-30 seconds, so as to obtain the upper stop component and the lower stop component.

(4) The teeth, the upper and lower stoppers, the slider, and the like prepared above were assembled to obtain an 8# resin closed end slide fastener shown in fig. 3. Wherein, the puller is manually penetrated at the speed of 20-30 particles per minute; cutting with a full-automatic cutting machine at a speed of 40-60 strips per minute. In fig. 3, 1 is a lower stop, 2 is teeth, 3 is a pull tab, 4 is a base, and 5 is an upper stop. The width of the zipper tape is 34.6mm, and the material is nylon.

Moreover, the invention carries out color fastness detection, and the detection method comprises the following steps: placing in an industrial washing machine, and rinsing with 30-50 deg.C water for 45-75 min. The detection result is as follows: the washing detection can reach the level 4 of the textile industry standard.

In addition, the strength test results of the slide fastener obtained in the present invention are shown in table 1.

Comparative example

The common POM material zippers are respectively provided according to the structures of the

embodiments

1 and 2, and dyeing is carried out according to the process in the embodiments, so that coloring can be carried out, the colors of the teeth and the zipper heads are consistent, and the colors of cloth belts are slightly different; the washing fastness is very low and is only 2 grades (the detection method is the same as the example).

According to the same detection method as the embodiment, the strength detection result of the common POM material zipper is shown in the table 2:

TABLE 2 Strength results (unit: N) for ordinary slide fastener

General	Horizontal pulling strength	Strong force of upper stop	Strength of lower stop
				3# zipper	250	60	40
8# zipper	500	150	100

The above examples show that the zipper product produced by the modified nylon material of the invention can be dyed in an acidic environment, and the teeth and the mesh belt can achieve the same color effect. Moreover, the zipper product has better strength than the common POM pull head and stronger rigidity. In addition, the smoothness of the zipper product is better than that of a common POM pull head, and the zipper is not easy to explode.

The above description is only a preferred embodiment of the present invention, and it should be noted that various modifications to these embodiments can be implemented by those skilled in the art without departing from the technical principle of the present invention, and these modifications should be construed as the scope of the present invention.

Claims

1. A modified nylon material capable of being dyed together with clothes is prepared by melt injection molding of a mixture, wherein the mixture comprises the following components in parts by mass:

72-83% of PA 6;

17-28% of glass fiber;

0.05-0.25% of antioxidant;

0.1 to 0.5% of a lubricant.

2. The modified nylon material of claim 1, wherein the PA6 has a melting temperature of 190-210 ℃; the glass fiber is a long glass fiber.

3. The modified nylon material of claim 1, wherein the antioxidant is antioxidant 225; the lubricant is ethylene bis stearamide and/or pentaerythritol stearate.

4. A preparation method of a modified nylon material capable of being dyed together with clothes comprises the following steps:

5. The method of claim 4, wherein the PA6 is a dried component; the melting temperature of the mixture is 180-300 ℃.

6. The preparation method according to claim 5, wherein the mixture is melted by using a mold for the zipper teeth, and the melting temperature is 180-230 ℃; or melting the mixture by using a die with an upper stop and a lower stop, wherein the melting temperature is 200-280 ℃; or, the mixture is melted by adopting a mold of a pull head, and the melting temperature is 240-300 ℃.

7. A slide fastener product comprising a resin member, wherein the material of the resin member is the modified nylon material according to any one of claims 1 to 3.

8. The zipper product of claim 7, wherein the zipper product is a resin closed end zipper.