CN110669456A - Hot melt adhesive and cloth hot melt compounding process - Google Patents

Hot melt adhesive and cloth hot melt compounding process Download PDF

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Publication number
CN110669456A
CN110669456A CN201910913184.3A CN201910913184A CN110669456A CN 110669456 A CN110669456 A CN 110669456A CN 201910913184 A CN201910913184 A CN 201910913184A CN 110669456 A CN110669456 A CN 110669456A
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hot melt
melt adhesive
cloth
layer
hot
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CN110669456B (en
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韩向东
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Beijing Alfa Knitting Co Ltd
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Beijing Alfa Knitting 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
    • C09J123/00—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
    • C09J123/02—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers not modified by chemical after-treatment
    • C09J123/04—Homopolymers or copolymers of ethene
    • C09J123/08—Copolymers of ethene
    • C09J123/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
    • C09J123/0853—Vinylacetate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/08—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the cooling method
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B32B37/1207—Heat-activated adhesive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • 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
    • C09J11/06—Non-macromolecular additives organic
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B32B37/1207—Heat-activated adhesive
    • B32B2037/1215—Hot-melt adhesive
    • B32B2037/1223—Hot-melt adhesive film-shaped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B32B2037/1253—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives curable adhesive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B32B2037/1269—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives multi-component adhesive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/20—All layers being fibrous or filamentary
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/24—All layers being polymeric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0261—Polyamide fibres
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2207/00—Properties characterising the ingredient of the composition
    • C08L2207/04—Thermoplastic elastomer

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Abstract

The invention relates to a hot melt adhesive and a cloth hot melt compounding process, belonging to the technical field of cloth processing. Simultaneously set up the coating on the cloth of upper strata, set up glass short fiber in the upper strata, set up the lower coat on the cloth of lower floor, set up glass short fiber in the lower coat, and set up the hot melt adhesive membrane between upper strata and lower coat to through cubic hot pressing, cooling, obtain the finished product, increased the stability and the life-span that the finished product used.

Description

Hot melt adhesive and cloth hot melt compounding process
Technical Field
The invention relates to the technical field of cloth processing, in particular to a hot melt adhesive and a cloth hot melt compounding process.
Background
The composite fabric is a novel material formed by bonding and laminating one or more layers of textile materials, non-woven materials and other functional materials through adhesives, the adhesives are commonly used EVA hot melt adhesives, the EVA hot melt adhesives are solid polymers which do not need solvents, contain no water and have 100% solid fusibility and are heated and melted to a certain degree to become liquid adhesives which can flow and have certain viscosity, the main component of the EVA hot melt adhesives is ethylene-vinyl acetate copolymer and show good adhesiveness and cohesiveness, but the EVA in the prior art mainly has low peel strength, so that the research on the hot melt adhesives with high peel strength is urgently needed to meet the market demand.
Disclosure of Invention
The invention aims to provide a hot melt adhesive which has the advantages of higher peeling strength and convenience in processing and meets the market demand.
The technical purpose of the invention is realized by the following technical scheme:
the hot melt adhesive comprises, by weight, 50-60 parts of an ethylene-vinyl acetate copolymer, 1-5 parts of tert-butyl peroxy-2-ethylhexylcarbonate, 1-3 parts of L-lysine triisocyanate, 5-10 parts of maleic anhydride, 10-15 parts of a polyester thermoplastic elastomer, 5-10 parts of a polyamide thermoplastic elastomer, 5-10 parts of polycaprolactone, 10-15 parts of a tackifier and 0.3-1.5 parts of an antioxidant;
the hot melt adhesive is prepared from the mixture of the raw materials through crushing, granulating, drying at constant temperature, banburying, mixing, melting, modifying and molding.
By adopting the technical scheme, the raw material proportion of the hot melt adhesive is optimized, and the hot melt adhesive has the advantage of higher peel strength through the synergistic effect among the raw materials, and can be obtained through crushing, granulating, drying at constant temperature, banburying, mixing, melting, modifying and molding, so that the hot melt adhesive has the advantage of convenience in processing.
More preferably, the temperature of the melt modification is 105-115 ℃ and the time is 20-30 min.
Through adopting above-mentioned technical scheme, inject the modified temperature of melting, when the modified temperature of melting was too high, the raw materials appears overburning easily and the degeneration, increases manufacturing cost moreover, when the modified temperature of melting was crossed lowly, can influence the melting of raw materials, appears solid particle in the messenger hot melt adhesive, influences the performance of hot melt adhesive.
More preferably, the tackifier is one or more of paraffin, hydrogenated rosin and terpene resin.
More preferably, the antioxidant is one or more of antioxidant 1010, antioxidant 168 and antioxidant 264.
By adopting the technical scheme, the tackifier and the antioxidant are optimized, so that the tackifier and the antioxidant can be selected as required, and the production cost of the hot melt adhesive is reduced under the condition of meeting market demands.
More preferably, the weight content of VA in the ethylene-vinyl acetate copolymer is 26-30%.
By adopting the technical scheme, the VA content in the ethylene-vinyl acetate copolymer is limited, so that the ethylene-vinyl acetate copolymer not only shows good thermoplasticity, but also has good adhesion on the surface.
The invention also aims to provide a cloth hot-melting compounding process, which not only realizes the bonding between the upper layer cloth and the lower layer cloth, but also further increases the bonding strength and the stability between the upper layer cloth and the lower layer cloth by the synergistic effect of the upper coating layer, the short glass fibers, the hot-melting adhesive film, the short glass fibers and the lower coating layer and the three-time hot pressing of the primary finished product.
The technical purpose of the invention is realized by the following technical scheme:
the cloth hot-melt compounding process comprises a hot-melt adhesive film, wherein the hot-melt adhesive film is made of the hot-melt adhesive, bonding protrusions are respectively and uniformly distributed on two side surfaces of the hot-melt adhesive film, the bonding protrusions are made of the same raw material as the hot-melt adhesive film, and the compounding process comprises the following steps:
A. two layers of cloth are stacked together and are divided into an upper layer of cloth and a lower layer of cloth;
B. coating a layer of hot melt adhesive on the top surface of the upper-layer cloth, then uniformly scattering short glass fibers on the surface of the hot melt adhesive, and forming a coating layer after the hot melt adhesive is solidified;
C. coating a layer of hot melt adhesive on the top surface of the lower layer of cloth, then uniformly scattering short glass fibers on the surface of the hot melt adhesive, and forming a lower coating layer after the hot melt adhesive is solidified;
D. placing a hot melt adhesive film on the top surface of the lower coating layer, turning the upper layer cloth by 180 degrees up and down, and placing the upper layer cloth on the top surface of the hot melt adhesive film to ensure that the top surface of the hot melt adhesive film is abutted with the upper coating layer to form a primary finished product;
E. and carrying out first hot pressing and cooling treatment on the primary finished product, then turning the primary finished product up and down by 180 degrees, carrying out second hot pressing and cooling treatment, then turning the primary finished product up and down by 180 degrees, and carrying out third hot pressing and cooling treatment to obtain a finished product.
By adopting the technical scheme, the top surface of the upper layer cloth is coated with a layer of hot melt adhesive, part of the hot melt adhesive permeates into the upper layer cloth, an upper coating layer is formed on the surface of the upper layer cloth, a layer of hot melt adhesive is also coated on the top surface of the lower layer cloth, part of the hot melt adhesive permeates into the lower layer cloth, a lower coating layer is formed on the surface of the upper layer cloth, then a hot melt adhesive film is arranged between the upper coating layer and the lower coating layer, both sides of the hot melt adhesive film are respectively provided with glass short fibers, the glass short fibers are coated in the hot melt adhesive through the synergistic action of the upper coating layer, the glass short fibers, the lower coating layer, the bonding strength between the upper layer cloth and the lower layer cloth is increased, the upper layer cloth and the lower layer cloth are not easy to separate, the distribution of the hot melt adhesive and the glass short fibers is more uniform, and the hot melt adhesive and the glass short fibers fully permeate into the upper-layer cloth and the lower-layer cloth, so that the bonding strength and the stability of the upper-layer cloth and the lower-layer cloth are further improved.
More preferably, the thickness of the upper coating layer is 0.3 to 0.4 μm and the thickness of the lower coating layer is 0.3 to 0.4 μm.
Through adopting above-mentioned technical scheme, thickness to the overcoat, the thickness of lower coat is injectd, the overcoat not only is convenient for, the control of lower coat, and avoid the overcoat, the thickness undersize of lower coat and reduce the fastness of glass short fiber above that, and also avoid the overcoat, the coating volume of lower coat is too little and reduce the inside content of hot melt adhesive infiltration surface fabric, still avoid the overcoat simultaneously, the thickness of lower coat is too big and make its curing time extension, also avoid the overcoat simultaneously, the thickness of lower coat is too big and make its inside defect appear and influence the adhesion strength.
More preferably, the thickness of the hot melt adhesive film is 4-7 μm.
Through adopting above-mentioned technical scheme, inject the thickness of hot melt adhesive membrane, the control of the hot melt adhesive membrane of not only being convenient for, avoid the thickness undersize of hot melt adhesive membrane and reduce its bonding, peel strength in addition, also avoid the thickness undersize of hot melt adhesive membrane and make its inside bubble that appears, still avoid the thickness of hot melt adhesive membrane too big simultaneously and make its curing time extension, also avoid the thickness of hot melt adhesive membrane too big simultaneously and make its inside defect that appears and influence bonding strength.
More preferably, the temperature of the first hot pressing, the second hot pressing and the third hot pressing is 90-95 ℃ for 0.5-2 min.
Through adopting above-mentioned technical scheme, the control of the cubic hot pressing of not only being convenient for realizes the bonding of upper cloth, lower floor's cloth, avoids the high temperature moreover and makes the hot melt adhesive degeneration, also avoids the high temperature moreover and causes the damage to upper cloth, lower floor's cloth, avoids the temperature to hang down excessively simultaneously and influences the melting of hot melt adhesive, also avoids the temperature to hang down excessively simultaneously and influences the adhesive strength of upper cloth and lower floor's cloth.
Preferably, the upper layer cloth and the lower layer cloth are both nylon cloth.
By adopting the technical scheme, the nylon fabric has high strength and elastic recovery capability, and simultaneously has good heat resistance and light resistance, so that the damage of ultraviolet rays to the hot melt adhesive can be reduced, the use stability and service life of the hot melt adhesive are improved, and the use stability of the upper-layer fabric and the lower-layer fabric is also improved.
In conclusion, the invention has the following beneficial effects:
firstly, the hot melt adhesive disclosed by the invention has the advantages of higher peeling strength and convenience in processing through the synergistic effect of the raw materials.
Secondly, adding tert-butyl peroxy-2-ethylhexyl carbonate, L-lysine triisocyanate, maleic anhydride and ethylene-vinyl acetate copolymer into the ethylene-vinyl acetate copolymer, adding polyester thermoplastic elastomer and polyamide thermoplastic elastomer into the ethylene-vinyl acetate copolymer, and improving the flexibility and toughness of the hot melt adhesive through the synergistic effect of the thermoplastic elastomer and the polyamide thermoplastic elastomer, so that the hot melt adhesive can be more tightly attached to the cloth, the polarity of the hot melt adhesive is increased, the residual stress of the hot melt adhesive and an adhesive interface is reduced, the adhesive strength and the peel strength of the hot melt adhesive are improved, and the hot melt adhesive shows good flexibility, heat resistance and water washing resistance.
Thirdly, the cloth hot melting compounding process not only realizes the bonding between the upper layer cloth and the lower layer cloth, but also further increases the bonding strength and the stability between the upper layer cloth and the lower layer cloth through the synergistic effect of the upper coating layer, the short glass fiber, the hot melting adhesive film, the short glass fiber and the lower coating layer.
Detailed Description
The present invention will be described in further detail with reference to examples. It should be understood that the preparation methods described in the examples are only for illustrating the present invention and are not to be construed as limiting the present invention, and that the simple modifications of the preparation methods of the present invention based on the concept of the present invention are within the scope of the present invention as claimed.
TABLE 1 examples the contents (unit: Kg) of the respective raw materials of the hot melt adhesive
Examples 1 2 3 4 5
Ethylene-vinyl acetate copolymer 50 57 55 53 60
Peroxy-2-ethylhexyl tert-butyl carbonate 1 4 3 2 5
L-lysine triisocyanate 3 2.5 2 1 1.5
Maleic anhydride 10 5 8 9 7
Polyester-based thermoplastic elastomer 14 12 13 10 15
Polyamide-based thermoplastic elastomer 8 10 7 6 5
Polycaprolactone 10 9 8 7 5
Tackifier 11 15 12 10 13
Antioxidant agent 0.3 1.2 1 0.6 1.5
Example 1
The raw material proportion of the hot melt adhesive is shown in table 1;
a. respectively crushing ethylene-vinyl acetate copolymer, peroxy-2-ethylhexyl tert-butyl carbonate, L-lysine triisocyanate, maleic anhydride, polyester thermoplastic elastomer, polyamide thermoplastic elastomer, polycaprolactone, paraffin and antioxidant 264 into granules, wherein the weight content of VA in the ethylene-vinyl acetate copolymer is 27%, the polyester thermoplastic elastomer adopts commercially available Pasteur C65AHPM, the polyamide thermoplastic elastomer adopts commercially available DuPont 8211-70, and then drying at the temperature of 40 ℃;
b. carrying out banburying mixing on the raw materials to form a mixture;
c. carrying out melt modification on the mixture at the temperature of 105 ℃, wherein the time of melt modification is 30 min;
d. and when the temperature of the mixture is reduced to 90 ℃, forming to obtain the hot melt adhesive.
The cloth hot melting compounding process comprises the following steps:
A. two layers of cloth are stacked together and are divided into an upper layer of cloth and a lower layer of cloth, and the upper layer of cloth and the lower layer of cloth are both nylon cloth;
B. coating a layer of the hot melt adhesive on the top surface of the upper-layer cloth, then uniformly scattering short glass fibers on the surface of the hot melt adhesive, wherein the weight of the short glass fibers is 50% of the weight of the hot melt adhesive, the average length of the short glass fibers is 0.5 mu m, and after the hot melt adhesive is cured, forming an upper coating layer, and the thickness of the upper coating layer is 0.3 mu m;
C. coating a layer of the hot melt adhesive on the top surface of the lower layer cloth, then uniformly scattering short glass fibers on the surface of the hot melt adhesive, wherein the weight of the short glass fibers is 50% of the weight of the hot melt adhesive, the average length of the short glass fibers is 1 micrometer, and after the hot melt adhesive is solidified, a lower coating layer is formed, and the thickness of the lower coating layer is 0.4 micrometer;
D. a hot melt adhesive film is arranged on the top surface of the lower coating layer, the hot melt adhesive film is made of the hot melt adhesive, the thickness of the hot melt adhesive film is 7 mu m, the two sides of the hot melt adhesive film are respectively and uniformly distributed with bonding bulges, the weight of the bonding bulges is 3 percent of the weight of the hot melt adhesive film, the raw materials of the bonding bulges are the same as the raw materials of the hot melt adhesive film, the upper layer cloth is turned over by 180 degrees up and down, and is placed on the top surface of the hot melt adhesive film to make the top surface of the hot melt adhesive film and the upper coating layer contact with each other to form a primary finished product, at the moment, the upper layer cloth is positioned above the lower layer cloth, the hot melt adhesive film is arranged between the upper coating layer and the lower coating layer, and glass short fibers are uniformly distributed between the hot melt adhesive film and the upper coating layer, and also are uniformly distributed between the hot melt adhesive film and the lower coating layer, the hot melt adhesive used in the upper coating layer, the lower coating layer and the hot melt adhesive used in the hot melt adhesive film are the hot melt adhesives disclosed by the invention;
E. carrying out first hot pressing on the primary product at the temperature of 90 ℃ for 2min, cooling, turning the primary product up and down for 180 degrees, wherein the upper cloth is positioned below the lower cloth, carrying out second hot pressing for 0.5min, cooling, turning the primary product up and down for 180 degrees, wherein the upper cloth is positioned above the lower cloth, carrying out third hot pressing for 0.5min, and cooling to obtain the finished product.
Example 2
The raw material proportion of the hot melt adhesive is shown in table 1;
a. respectively crushing ethylene-vinyl acetate copolymer, peroxy-2-ethylhexyl tert-butyl carbonate, L-lysine triisocyanate, maleic anhydride, polyester thermoplastic elastomer, polyamide thermoplastic elastomer, polycaprolactone, hydrogenated rosin and antioxidant 1010 into granules, wherein the weight content of VA in the ethylene-vinyl acetate copolymer is 26%, the polyester thermoplastic elastomer adopts commercially available Pasteur C65AHPM, the polyamide thermoplastic elastomer adopts commercially available DuPont 8211-70, and then drying at the temperature of 40 ℃;
b. carrying out banburying mixing on the raw materials to form a mixture;
c. carrying out melt modification on the mixture at the temperature of 110 ℃, wherein the time of melt modification is 20 min;
d. and when the temperature of the mixture is reduced to 95 ℃, forming to obtain the hot melt adhesive.
The cloth hot melting compounding process comprises the following steps:
A. two layers of cloth are stacked together and are divided into an upper layer of cloth and a lower layer of cloth, and the upper layer of cloth and the lower layer of cloth are both nylon cloth;
B. coating a layer of the hot melt adhesive on the top surface of the upper-layer cloth, then uniformly scattering short glass fibers on the surface of the hot melt adhesive, wherein the weight of the short glass fibers is 60% of the weight of the hot melt adhesive, the average length of the short glass fibers is 0.6 mu m, and after the hot melt adhesive is cured, forming an upper coating layer, and the thickness of the upper coating layer is 0.4 mu m;
C. coating a layer of the hot melt adhesive on the top surface of the lower layer cloth, then uniformly scattering short glass fibers on the surface of the hot melt adhesive, wherein the weight of the short glass fibers is 60% of the weight of the hot melt adhesive, the average length of the short glass fibers is 0.6 mu m, and after the hot melt adhesive is solidified, a lower coating layer is formed, and the thickness of the lower coating layer is 0.3 mu m;
D. a hot melt adhesive film is arranged on the top surface of the lower coating layer, the hot melt adhesive film is made of the hot melt adhesive, the thickness of the hot melt adhesive film is 5 mu m, the two sides of the hot melt adhesive film are respectively and uniformly distributed with bonding bulges, the weight of the bonding bulges is 5 percent of the weight of the hot melt adhesive film, the raw materials of the bonding bulges are the same as the raw materials of the hot melt adhesive film, the upper layer cloth is turned over by 180 degrees up and down, and is placed on the top surface of the hot melt adhesive film to make the top surface of the hot melt adhesive film and the upper coating layer contact with each other to form a primary finished product, at the moment, the upper layer cloth is positioned above the lower layer cloth, the hot melt adhesive film is arranged between the upper coating layer and the lower coating layer, and glass short fibers are uniformly distributed between the hot melt adhesive film and the upper coating layer, and also are uniformly distributed between the hot melt adhesive film and the lower coating layer, the hot melt adhesive used in the upper coating layer, the lower coating layer and the hot melt adhesive used in the hot melt adhesive film are the hot melt adhesives disclosed by the invention;
E. and carrying out first hot pressing on the primary product at the temperature of 95 ℃ for 0.5min, cooling, then turning the primary product up and down for 180 degrees, at the moment, placing the upper-layer cloth below the lower-layer cloth, carrying out second hot pressing for 1.3min, cooling, then turning the primary product up and down for 180 degrees, at the moment, placing the upper-layer cloth above the lower-layer cloth, carrying out third hot pressing for 1.3min, and cooling to obtain a finished product.
Example 3
The raw material proportion of the hot melt adhesive is shown in table 1;
a. respectively crushing and granulating an ethylene-vinyl acetate copolymer, peroxy-2-ethylhexyl tert-butyl carbonate, L-lysine triisocyanate, maleic anhydride, a polyester thermoplastic elastomer, a polyamide thermoplastic elastomer, polycaprolactone, hydrogenated rosin and an antioxidant 168, wherein the weight content of VA in the ethylene-vinyl acetate copolymer is 28%, the polyester thermoplastic elastomer is commercially available Bassfer C65AHPM, the polyamide thermoplastic elastomer is commercially available DuPont 8211-70, and then drying at the temperature of 40 ℃;
b. carrying out banburying mixing on the raw materials to form a mixture;
c. carrying out melt modification on the mixture at the temperature of 110 ℃, wherein the time of melt modification is 25 min;
d. and when the temperature of the mixture is reduced to 93 ℃, forming to obtain the hot melt adhesive.
The cloth hot melting compounding process comprises the following steps:
A. two layers of cloth are stacked together and are divided into an upper layer of cloth and a lower layer of cloth, and the upper layer of cloth and the lower layer of cloth are both nylon cloth;
B. coating a layer of the hot melt adhesive on the top surface of the upper-layer cloth, then uniformly scattering short glass fibers on the surface of the hot melt adhesive, wherein the weight of the short glass fibers is 55% of the weight of the hot melt adhesive, the average length of the short glass fibers is 0.8 mu m, and after the hot melt adhesive is cured, forming an upper coating layer, and the thickness of the upper coating layer is 0.4 mu m;
C. coating a layer of the hot melt adhesive on the top surface of the lower layer cloth, then uniformly scattering short glass fibers on the surface of the hot melt adhesive, wherein the weight of the short glass fibers is 55% of the weight of the hot melt adhesive, the average length of the short glass fibers is 0.8 mu m, and after the hot melt adhesive is solidified, a lower coating layer is formed, and the thickness of the lower coating layer is 0.4 mu m;
D. a hot melt adhesive film is arranged on the top surface of the lower coating layer, the hot melt adhesive film is made of the hot melt adhesive, the thickness of the hot melt adhesive film is 5 mu m, the two sides of the hot melt adhesive film are respectively and uniformly distributed with bonding bulges, the weight of the bonding bulges is 4 percent of the weight of the hot melt adhesive film, the raw materials of the bonding bulges are the same as the raw materials of the hot melt adhesive film, the upper layer cloth is turned over by 180 degrees up and down, and is placed on the top surface of the hot melt adhesive film to make the top surface of the hot melt adhesive film and the upper coating layer contact with each other to form a primary finished product, at the moment, the upper layer cloth is positioned above the lower layer cloth, the hot melt adhesive film is arranged between the upper coating layer and the lower coating layer, and glass short fibers are uniformly distributed between the hot melt adhesive film and the upper coating layer, and also are uniformly distributed between the hot melt adhesive film and the lower coating layer, the hot melt adhesive used in the upper coating layer, the lower coating layer and the hot melt adhesive used in the hot melt adhesive film are the hot melt adhesives disclosed by the invention;
E. and carrying out first hot pressing on the primary finished product at the temperature of 92 ℃, wherein the time of the first hot pressing is 1min, cooling, then turning the primary finished product up and down for 180 degrees, at the moment, the upper-layer cloth is positioned below the lower-layer cloth, carrying out second hot pressing, wherein the time of the second hot pressing is 1min, cooling, then turning the primary finished product up and down for 180 degrees, at the moment, the upper-layer cloth is positioned above the lower-layer cloth, carrying out third hot pressing, and the time of the third hot pressing is 1min, cooling, thus obtaining the finished product.
Example 4
The raw material proportion of the hot melt adhesive is shown in table 1;
a. respectively crushing ethylene-vinyl acetate copolymer, peroxy-2-ethylhexyl tert-butyl carbonate, L-lysine triisocyanate, maleic anhydride, polyester thermoplastic elastomer, polyamide thermoplastic elastomer, polycaprolactone, terpene resin and antioxidant 264 into granules, wherein the weight content of VA in the ethylene-vinyl acetate copolymer is 29%, the polyester thermoplastic elastomer adopts commercially available Pasteur C65AHPM, the polyamide thermoplastic elastomer adopts commercially available DuPont 8211-70, and then drying at the temperature of 40 ℃;
b. carrying out banburying mixing on the raw materials to form a mixture;
c. carrying out melt modification on the mixture at the temperature of 115 ℃, wherein the time of melt modification is 20 min;
d. and when the temperature of the mixture is reduced to 90 ℃, forming to obtain the hot melt adhesive.
The cloth hot melting compounding process comprises the following steps:
A. two layers of cloth are stacked together and are divided into an upper layer of cloth and a lower layer of cloth, and the upper layer of cloth and the lower layer of cloth are both nylon cloth;
B. coating a layer of the hot melt adhesive on the top surface of the upper-layer cloth, then uniformly scattering short glass fibers on the surface of the hot melt adhesive, wherein the weight of the short glass fibers is 50% of the weight of the hot melt adhesive, the average length of the short glass fibers is 1 mu m, and after the hot melt adhesive is solidified, forming an upper coating layer, wherein the thickness of the upper coating layer is 0.3 mu m;
C. coating a layer of the hot melt adhesive on the top surface of the lower layer cloth, then uniformly scattering short glass fibers on the surface of the hot melt adhesive, wherein the weight of the short glass fibers is 50% of the weight of the hot melt adhesive, the average length of the short glass fibers is 0.5 mu m, and after the hot melt adhesive is solidified, a lower coating layer is formed, and the thickness of the lower coating layer is 0.4 mu m;
D. a hot melt adhesive film is arranged on the top surface of the lower coating layer, the hot melt adhesive film is made of the hot melt adhesive, the thickness of the hot melt adhesive film is 4 mu m, the two sides of the hot melt adhesive film are respectively and uniformly distributed with bonding bulges, the weight of the bonding bulges is 5 percent of the weight of the hot melt adhesive film, the raw materials of the bonding bulges are the same as the raw materials of the hot melt adhesive film, the upper layer cloth is turned over by 180 degrees up and down, and is placed on the top surface of the hot melt adhesive film to make the top surface of the hot melt adhesive film and the upper coating layer contact with each other to form a primary finished product, at the moment, the upper layer cloth is positioned above the lower layer cloth, the hot melt adhesive film is arranged between the upper coating layer and the lower coating layer, and glass short fibers are uniformly distributed between the hot melt adhesive film and the upper coating layer, and also are uniformly distributed between the hot melt adhesive film and the lower coating layer, the hot melt adhesive used in the upper coating layer, the lower coating layer and the hot melt adhesive used in the hot melt adhesive film are the hot melt adhesives disclosed by the invention;
E. and carrying out first hot pressing on the primary product at the temperature of 90 ℃ for 1.3min, cooling, then turning the primary product up and down for 180 degrees, at the moment, placing the upper-layer cloth below the lower-layer cloth, carrying out second hot pressing for 0.8min, cooling, then turning the primary product up and down for 180 degrees, at the moment, placing the upper-layer cloth above the lower-layer cloth, carrying out third hot pressing for 0.5min, and cooling to obtain a finished product.
Example 5
The raw material proportion of the hot melt adhesive is shown in table 1;
a. respectively crushing and granulating an ethylene-vinyl acetate copolymer, peroxy-2-ethylhexyl tert-butyl carbonate, L-lysine triisocyanate, maleic anhydride, a polyester thermoplastic elastomer, a polyamide thermoplastic elastomer, polycaprolactone, terpene resin and an antioxidant 168, wherein the weight content of VA in the ethylene-vinyl acetate copolymer is 30%, the polyester thermoplastic elastomer is commercially available Bassfer C65AHPM, the polyamide thermoplastic elastomer is commercially available DuPont 8211-70, and then drying at the temperature of 40 ℃;
b. carrying out banburying mixing on the raw materials to form a mixture;
c. carrying out melt modification on the mixture at the temperature of 105 ℃, wherein the time of melt modification is 30 min;
d. and when the temperature of the mixture is reduced to 95 ℃, forming to obtain the hot melt adhesive.
The cloth hot melting compounding process comprises the following steps:
A. two layers of cloth are stacked together and are divided into an upper layer of cloth and a lower layer of cloth, and the upper layer of cloth and the lower layer of cloth are both nylon cloth;
B. coating a layer of the hot melt adhesive on the top surface of the upper-layer cloth, then uniformly scattering short glass fibers on the surface of the hot melt adhesive, wherein the weight of the short glass fibers is 55% of the weight of the hot melt adhesive, the average length of the short glass fibers is 0.8 mu m, and after the hot melt adhesive is cured, forming an upper coating layer, and the thickness of the upper coating layer is 0.3 mu m;
C. coating a layer of the hot melt adhesive on the top surface of the lower layer cloth, then uniformly scattering short glass fibers on the surface of the hot melt adhesive, wherein the weight of the short glass fibers is 55% of the weight of the hot melt adhesive, the average length of the short glass fibers is 0.6 mu m, and after the hot melt adhesive is solidified, a lower coating layer is formed, and the thickness of the lower coating layer is 0.3 mu m;
D. a hot melt adhesive film is arranged on the top surface of the lower coating layer, the hot melt adhesive film is made of the hot melt adhesive, the thickness of the hot melt adhesive film is 6 mu m, the two sides of the hot melt adhesive film are respectively and uniformly distributed with bonding bulges, the weight of the bonding bulges is 6 percent of the weight of the hot melt adhesive film, the raw materials of the bonding bulges are the same as the raw materials of the hot melt adhesive film, the upper layer cloth is turned over by 180 degrees up and down, and is placed on the top surface of the hot melt adhesive film to make the top surface of the hot melt adhesive film and the upper coating layer contact with each other to form a primary finished product, at the moment, the upper layer cloth is positioned above the lower layer cloth, the hot melt adhesive film is arranged between the upper coating layer and the lower coating layer, and glass short fibers are uniformly distributed between the hot melt adhesive film and the upper coating layer, and also are uniformly distributed between the hot melt adhesive film and the lower coating layer, the hot melt adhesive used in the upper coating layer, the lower coating layer and the hot melt adhesive used in the hot melt adhesive film are the hot melt adhesives disclosed by the invention;
E. and carrying out first hot pressing on the primary finished product at the temperature of 95 ℃ for 0.8min, cooling, then turning the primary finished product up and down for 180 degrees, wherein the upper-layer cloth is positioned below the lower-layer cloth, carrying out second hot pressing for 2min, cooling, then turning the primary finished product up and down for 180 degrees, wherein the upper-layer cloth is positioned above the lower-layer cloth, carrying out third hot pressing for 0.6min, and cooling to obtain a finished product.
Comparative example 1
The comparative example is different from example 3 in that a commercially available common EVA hot melt adhesive is used.
Comparative example 2
The difference between the comparative example and the example 3 is that the polyester-based thermoplastic elastomer and the polyamide-based thermoplastic elastomer are not added to the raw materials of the hot melt adhesive.
Comparative example 3
The difference between the comparative example and the example 3 is that the raw materials of the hot melt adhesive are not added with tert-butyl peroxy-2-ethylhexyl carbonate, L-lysine triisocyanate and maleic anhydride.
The hot melt adhesives obtained in examples 1 to 5 and comparative examples 1 to 3 were tested for the following properties according to the Hot melt adhesive interlining peeling Strength test method (FZ/T01085-2000), and the test results are shown in Table 2.
TABLE 2 test results
Figure BDA0002215304310000101
As can be seen from Table 1, the hot melt adhesive of the present invention has the advantages of high peel strength, water resistance and stable use. The polarity of the hot melt adhesive is increased due to the synergistic effect of the raw materials, the residual stress of the hot melt adhesive and an adhesive interface is reduced, the adhesive strength and the peel strength of the hot melt adhesive are improved, and the hot melt adhesive has good flexibility, heat resistance and tearing resistance.

Claims (10)

1. The hot melt adhesive is characterized in that: the raw materials comprise, by weight, 50-60 parts of ethylene-vinyl acetate copolymer, 1-5 parts of tert-butyl peroxy-2-ethylhexyl carbonate, 1-3 parts of L-lysine triisocyanate, 5-10 parts of maleic anhydride, 10-15 parts of polyester thermoplastic elastomer, 5-10 parts of polyamide thermoplastic elastomer, 5-10 parts of polycaprolactone, 10-15 parts of tackifier and 0.3-1.5 parts of antioxidant;
the hot melt adhesive is prepared from the mixture of the raw materials through crushing, granulating, drying at constant temperature, banburying, mixing, melting, modifying and molding.
2. The hot melt adhesive and fabric hot melt compounding process according to claim 1, characterized in that: the temperature of the melt modification is 105-115 ℃, and the time is 20-30 min.
3. The hot melt adhesive and fabric hot melt compounding process according to claim 1, characterized in that: the tackifier is one or more of paraffin, hydrogenated rosin and terpene resin.
4. The hot melt adhesive and fabric hot melt compounding process according to claim 1, characterized in that: the antioxidant is one or more of antioxidant 1010, antioxidant 168 and antioxidant 264.
5. The hot melt adhesive and fabric hot melt compounding process according to claim 1, characterized in that: the weight content of VA in the ethylene-vinyl acetate copolymer is 26-30%.
6. Cloth hot melt composite process, characterized by, including the hot melt adhesive membrane, the hot melt adhesive membrane is made by the hot melt adhesive of any one of claims 1-4, two sides of the hot melt adhesive membrane evenly distribute and bond the projection separately, bond the raw materials of the projection and raw materials of the hot melt adhesive membrane the same, the composite process includes the following steps:
A. two layers of cloth are stacked together and are divided into an upper layer of cloth and a lower layer of cloth;
B. coating a layer of hot melt adhesive on the top surface of the upper-layer cloth, then uniformly scattering short glass fibers on the surface of the hot melt adhesive, and forming a coating layer after the hot melt adhesive is solidified;
C. coating a layer of hot melt adhesive on the top surface of the lower layer of cloth, then uniformly scattering short glass fibers on the surface of the hot melt adhesive, and forming a lower coating layer after the hot melt adhesive is solidified;
D. placing a hot melt adhesive film on the top surface of the lower coating layer, turning the upper layer cloth by 180 degrees up and down, and placing the upper layer cloth on the top surface of the hot melt adhesive film to ensure that the top surface of the hot melt adhesive film is abutted with the upper coating layer to form a primary finished product;
E. and carrying out first hot pressing and cooling treatment on the primary finished product, then turning the primary finished product up and down by 180 degrees, carrying out second hot pressing and cooling treatment, then turning the primary finished product up and down by 180 degrees, and carrying out third hot pressing and cooling treatment to obtain a finished product.
7. The cloth hot melt compounding process of claim 6, wherein: the thickness of the upper coating layer is 0.3-0.4 μm, and the thickness of the lower coating layer is 0.3-0.4 μm.
8. The cloth hot melt compounding process of claim 6, wherein: the thickness of the hot melt adhesive film is 4-7 μm.
9. The cloth hot melt compounding process of claim 6, wherein: the temperature of the first hot pressing, the second hot pressing and the third hot pressing is 90-95 ℃, and the time is 0.5-2 min.
10. The cloth hot melt compounding process of claim 6, wherein: the upper layer cloth and the lower layer cloth are both nylon cloth.
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