CN115181513A - Preparation method of hot melt adhesive for roll coating of TPE - Google Patents
Preparation method of hot melt adhesive for roll coating of TPE Download PDFInfo
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- CN115181513A CN115181513A CN202210826889.3A CN202210826889A CN115181513A CN 115181513 A CN115181513 A CN 115181513A CN 202210826889 A CN202210826889 A CN 202210826889A CN 115181513 A CN115181513 A CN 115181513A
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- hot melt
- melt adhesive
- roll coating
- carpet
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Classifications
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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
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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
- 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
- C09J11/02—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
-
- 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
-
- 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
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention relates to the technical field of modified high polymer materials, in particular to a preparation method of a hot melt adhesive for roll coating TPE, which comprises the following raw materials in parts by weight: 5-10 parts of POE (polyolefin elastomer), 3-5 parts of compatilizer, 10-25 parts of alpha polyolefin, 2-5 parts of wax, 2-5 parts of tackifying resin, 50-70 parts of filler, 2-5 parts of plant fiber, 5-10 parts of carpet reclaimed material, 0.1-0.5 part of antioxidant, 0.5-1.5 parts of black master batch and 1-3 parts of other auxiliary agents, wherein the preparation method comprises the steps of high-speed mixing → low-speed stirring → a double-screw extruder → underwater grain cutting → packaging for later use. The hot melt adhesive prepared by the invention has the melt viscosity of 20000-50000cps measured at 170 ℃, is completely suitable for roll coating production, a carpet prepared by a roll coating production process route has no fracture condition in a-21 ℃ freezing test, and the quality problem of poor flexibility of hot melt adhesive such as a Melnkan PP bottom back is solved by analyzing, comparing and improving the components and functions of the hot melt adhesive and adjusting the formula and the proportion greatly.
Description
Technical Field
The invention relates to the technical field of modified high polymer materials, in particular to a preparation method of a hot melt adhesive for roll coating TPE.
Background
The carpet tiles on the market are distinguished according to the glue components used on the carpet back, and mainly comprise PVC glue, asphalt glue, PU glue and polyolefins. Wherein, the polyolefin backing is an environment-friendly material, and is a development, improvement and innovation direction of square carpets from the aspects of environmental protection, energy conservation and recoverability. Carpet tile manufacturers abroad have or have intentionally turned to polyolefin base backings. The most representative and leading positions of these are the PE sole of the american schotter carpet and the PP sole of the american mellin ken carpet. Compared with PVC and asphalt rubber sole, the PU sole has the advantages of environmental protection, extremely low TVOC, recycle, light weight and the like, and compared with PU sole back, the PU sole has the advantages of recycle, light weight and more resource saving.
At present, there are two main types of polyolefin bottom and back production processes, namely, melt extrusion of a PE film layer represented by American Schotter carpet, and composite compaction and molding of the PE film layer, the glass fiber layer and a blank carpet. In another method, a PP adhesive represented by american mellin ken corporation is melted, applied to the back of a carpet by roll transfer, and laminated with a glass fiber layer to form a carpet. Because of the different production processes and approaches, the requirements for polyolefin adhesives are also quite different; meanwhile, the performance of the rubber sole is also greatly different.
Polyolefin PE backing represented by a Schott carpet is required to have a certain limit on the fluidity of glue solution because the PE backing is extruded into a film, otherwise the fluidity is too good, the film is not easy to form, or the film cannot be uniform after the film is formed. Extruding to form film, and compounding with blanket. This has a large effect on the bond strength of the blanket layer and is relatively easy to separate. Meanwhile, the uniformity of the left, middle and right sides is not easy to control due to equipment. Due to the influence of production temperature and raw materials, the thickness of the adhesive film is easy to change in production, and the adjustment is troublesome.
The roll coating mode represented by Milliken is convenient in adjustment process in production, the uniformity of the left, the middle and the right is easier to ensure, and the glue solution is more firmly combined with a blank blanket in a penetrating manner due to coating in a molten state, so that the roll coating mode represented by Milliken is also an accepted production mode. And the flow of the PP glue is required to be very good by roller coating, otherwise, the PP glue cannot be transferred, the molecular weight of the PP glue is small, so that the brittleness of the PP glue is more obvious, and the carpet back is brittle and poor in toughness. In the current market, the product of Meilinken has been converted into a structural form with a non-woven fabric layer on the back to prevent the carpet back from brittle fracture. Therefore, the problems of poor toughness and poor durability of the carpet of the roller coating hot melt adhesive used by the current manufacturers can be exposed.
In China, some local manufacturers simulate the Xiao's production mode, the problems in production are more obvious, the connection firmness of the gluing layer is poor, great difference exists in front and back uniformity, and the carpet is easy to warp.
Disclosure of Invention
The invention aims to provide a preparation method of a hot melt adhesive for roll coating TPE, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a preparation method of a hot melt adhesive for roll coating of TPE comprises the following raw materials in parts by weight: 5-10 parts of POE (polyolefin elastomer), 3-5 parts of compatilizer, 10-25 parts of alpha polyolefin, 2-5 parts of wax, 2-5 parts of tackifying resin, 50-70 parts of filler, 2-5 parts of plant fiber, 5-10 parts of carpet reclaimed material, 0.1-0.5 part of antioxidant, 0.5-1.5 parts of black master batch and 1-3 parts of other auxiliary agents, wherein the preparation method comprises the steps of high-speed mixing → low-speed stirring → a double-screw extruder → underwater grain cutting → packaging for later use.
Preferably, the feed comprises the following raw materials in parts by weight: 8 parts of POE elastomer, 4 parts of compatilizer, 20 parts of alpha polyolefin, 5 parts of wax, 3 parts of tackifying resin, 60 parts of filler, 4 parts of vegetable fiber, 8 parts of carpet reclaimed material, 0.3 part of antioxidant, 1 part of black master batch and 2 parts of other auxiliary agents.
Preferably, the feed comprises the following raw materials in parts by weight: 10 parts of POE elastomer, 5 parts of compatilizer, 25 parts of alpha polyolefin, 5 parts of wax, 5 parts of tackifying resin, 70 parts of filler, 5 parts of vegetable fiber, 10 parts of carpet reclaimed material, 0.5 part of antioxidant, 1.5 parts of black master batch and 3 parts of other auxiliary agents.
Preferably, the feed comprises the following raw materials in parts by weight: 5 parts of POE elastomer, 3 parts of compatilizer, 10 parts of alpha polyolefin, 2 parts of wax, 2 parts of tackifying resin, 50 parts of filler, 2 parts of plant fiber, 5 parts of carpet reclaimed material, 0.1 part of antioxidant, 0.5 part of black master batch and 1 part of other auxiliary agents.
Preferably, the plant fibers are chopped by ramie fibers.
Preferably, the carpet reclaimed material is prepared by crushing and grinding carpet leftover materials and recycled carpets.
Preferably, the other adjuvants include a mold release agent, a dispersant, a hardener, and a reinforcing agent.
Preferably, the release agent adopts one or two of erucamide and oleamide.
Preferably, the dispersant is one or more of EBS, monoglyceride and special PE wax.
Preferably, the hardening agent is modified sepiolite, and the reinforcing agent is modified nano shell powder.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the preparation method of the hot melt adhesive for roll coating TPE, the melt viscosity of the prepared hot melt adhesive is 20000-50000cps measured at 170 ℃, the hot melt adhesive is completely suitable for production in a roll coating mode, a carpet prepared through a roll coating production process route has no fracture condition in a-21 ℃ freezing test, and the carpet prepared through the roll coating production mode has the carpet back peeling more than 50N.
2. The preparation method of the hot melt adhesive for roll coating TPE is produced by a roll coating transfer mode, can eliminate numerous quality problems and inconvenient production regulation caused by a compound production process after an extruded adhesive film is solved, and simultaneously eliminates the quality problem of poor flexibility of hot melt adhesive, such as a Milliken PP back, for solving the problem of roll coating hot melt adhesive, by analyzing, comparing and improving the components and functions of each material of the hot melt adhesive and adjusting the formula and the proportion greatly.
3. According to the preparation method of the hot melt adhesive for roll coating TPE, the vegetable fibers with smaller carbon footprint and lower carbon emission are used for enhancing the strength and the size stability of the modified hot melt adhesive, and a larger proportion of carpet reclaimed materials is added to reduce carbon dioxide generated in the production process, so that a new material solution is provided for realizing the sustainable development of carpets from cradle to cradle.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.
Example 1
A preparation method of a hot melt adhesive for roll coating of TPE comprises the following raw materials in parts by weight: 8 parts of POE elastomer, 4 parts of compatilizer, 20 parts of alpha polyolefin, 5 parts of wax, 3 parts of tackifying resin, 60 parts of filler, 4 parts of vegetable fiber, 8 parts of carpet reclaimed material, 0.3 part of antioxidant, 1 part of black master batch and 2 parts of other auxiliary agents.
Furthermore, the plant fiber is chopped by ramie fiber.
Specifically, the carpet reclaimed material is prepared by crushing and grinding carpet leftover materials and recycled carpets, and is specifically prepared by crushing and grinding the carpet leftover materials and the recycled carpets by a whole set of production process routes of tearing, crushing, grinding and separating the carpets of Evenn company.
In addition, other auxiliary agents comprise a release agent, a dispersing agent, a hardening agent and a reinforcing agent, wherein the release agent is an erucic amide release agent, the dispersing agent is EBS, the hardening agent is modified sepiolite, and the reinforcing agent is modified nano shell powder.
Example 2
A preparation method of a hot melt adhesive for roll coating of TPE comprises the following raw materials in parts by weight: 10 parts of POE elastomer, 5 parts of compatilizer, 25 parts of alpha polyolefin, 5 parts of wax, 5 parts of tackifying resin, 70 parts of filler, 5 parts of vegetable fiber, 10 parts of carpet reclaimed material, 0.5 part of antioxidant, 1.5 parts of black master batch and 3 parts of other auxiliary agents.
Furthermore, the plant fiber is chopped by ramie fiber.
Specifically, the carpet reclaimed material is prepared by crushing and grinding carpet leftover materials and recycled carpets, and is prepared by crushing and grinding carpet leftover materials and recycled carpets by adopting a whole set of production process routes of tearing, crushing, grinding and separating carpets of Evenen company.
In addition, other auxiliary agents comprise a release agent, a dispersing agent, a hardening agent and a reinforcing agent, wherein the release agent adopts oleamide, the dispersing agent is the mixture of monoglyceride and special PE wax, the hardening agent is modified sepiolite, and the reinforcing agent is modified nano shell powder.
Example 3
A preparation method of a hot melt adhesive for roll coating of TPE comprises the following raw materials in parts by weight: 5 parts of POE elastomer, 3 parts of compatilizer, 10 parts of alpha polyolefin, 2 parts of wax, 2 parts of tackifying resin, 50 parts of filler, 2 parts of plant fiber, 5 parts of carpet reclaimed material, 0.1 part of antioxidant, 0.5 part of black master batch and 1 part of other auxiliary agents.
Furthermore, the plant fiber is chopped by ramie fiber.
Specifically, the carpet reclaimed material is prepared by crushing and grinding carpet leftover materials and recycled carpets, and is prepared by crushing and grinding carpet leftover materials and recycled carpets by adopting a whole set of production process routes of tearing, crushing, grinding and separating carpets of Evenen company.
In addition, other auxiliary agents comprise a release agent, a dispersing agent, a hardening agent and a reinforcing agent, wherein the release agent adopts erucamide, the dispersing agent is EBS, the hardening agent is modified sepiolite, and the reinforcing agent is modified nano shell powder.
Comparative example 1
A preparation method of a hot melt adhesive for roll coating of TPE comprises the following raw materials in parts by weight: 10 parts of POE elastomer, 5 parts of compatilizer, 25 parts of alpha polyolefin, 5 parts of wax, 5 parts of tackifying resin, 5 parts of vegetable fiber, 10 parts of carpet reclaimed material, 0.5 part of antioxidant, 1.5 parts of black master batch, 3 parts of other auxiliary agents and the balance as shown in example 1.
Comparative example 2
A preparation method of a hot melt adhesive for roll coating of TPE comprises the following raw materials in parts by weight: 10 parts of POE elastomer, 5 parts of compatilizer, 25 parts of alpha polyolefin, 5 parts of wax, 5 parts of tackifying resin, 70 parts of filler, 5 parts of vegetable fiber, 0.5 part of antioxidant, 1.5 parts of black master batch, 3 parts of other auxiliary agents and the like as shown in example 1.
The hot melt adhesives prepared in the three examples of the invention were compared with those of comparative examples 1 and 2 at 170 ℃ for the measured melt viscosity, the peel of the carpet back, and the percent breakage of the resulting carpet in the-21 ℃ freeze test, as shown in the following table:
the experimental results show that: the hot melt adhesive prepared by the preparation method for the roller coating TPE provided by the invention has the melt viscosity of 20000-50000cps measured at 170 ℃, is completely suitable for production in a roller coating mode, and is a carpet prepared by a roller coating production process route, and has no fracture condition in a-21 ℃ freezing test, and the carpet prepared by the roller coating production mode has the carpet back peeling of more than 50N.
The hot melt adhesive prepared by the preparation method for the roller coating TPE is produced by a roller coating transfer mode, so that a plurality of quality problems and inconvenient production regulation caused by a composite production process after an adhesive film is extruded can be eliminated, the formula and the proportion are regulated greatly by analyzing, comparing and improving the components and functions of various materials of the hot melt adhesive, and the quality problem of poor flexibility of the roller coating hot melt adhesive, such as the Mellin's PP bottom back, is eliminated.
According to the invention, the strength and the size stability of the modified hot melt adhesive are enhanced by using the plant fibers with smaller carbon footprint and lower carbon emission, and the larger proportion of the carpet reclaimed material is added to reduce the carbon dioxide generated in the production process, so that a new material solution is provided for realizing the sustainable development of the carpet from cradle to cradle.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A preparation method of a hot melt adhesive for roll coating of TPE is characterized by comprising the following steps: the composite material comprises the following raw materials in parts by weight: 5-10 parts of POE elastomer, 3-5 parts of compatilizer, 10-25 parts of alpha polyolefin, 2-5 parts of wax, 2-5 parts of tackifying resin, 50-70 parts of filler, 2-5 parts of plant fiber, 5-10 parts of carpet reclaimed material, 0.1-0.5 part of antioxidant, 0.5-1.5 parts of black master batch and 1-3 parts of other auxiliary agents.
2. The method for preparing the hot melt adhesive for roll coating of TPE according to claim 1, characterized in that: the composite material comprises the following raw materials in parts by weight: 8 parts of POE elastomer, 4 parts of compatilizer, 20 parts of alpha polyolefin, 5 parts of wax, 3 parts of tackifying resin, 60 parts of filler, 4 parts of vegetable fiber, 8 parts of carpet reclaimed material, 0.3 part of antioxidant, 1 part of black master batch and 2 parts of other auxiliary agents.
3. The method for preparing the hot melt adhesive for roll coating of TPE according to claim 1, characterized in that: the composite material comprises the following raw materials in parts by weight: 10 parts of POE elastomer, 5 parts of compatilizer, 25 parts of alpha polyolefin, 5 parts of wax, 5 parts of tackifying resin, 70 parts of filler, 5 parts of vegetable fiber, 10 parts of carpet reclaimed material, 0.5 part of antioxidant, 1.5 parts of black master batch and 3 parts of other auxiliary agents.
4. The method for preparing the hot melt adhesive for roll coating of TPE according to claim 1, is characterized in that: the composite material comprises the following raw materials in parts by weight: 5 parts of POE elastomer, 3 parts of compatilizer, 10 parts of alpha polyolefin, 2 parts of wax, 2 parts of tackifying resin, 50 parts of filler, 2 parts of plant fiber, 5 parts of carpet reclaimed material, 0.1 part of antioxidant, 0.5 part of black master batch and 1 part of other auxiliary agents.
5. The method for preparing the hot melt adhesive for roll coating of TPE according to claim 1, is characterized in that: the plant fiber is chopped by ramie fiber.
6. The method for preparing the hot melt adhesive for roll coating of TPE according to claim 1, characterized in that: the carpet reclaimed material is prepared by crushing and grinding carpet leftover materials and recycled carpets.
7. The method for preparing the hot melt adhesive for roll coating of TPE according to claim 1, characterized in that: other auxiliaries include mould release agents, dispersants, hardeners and reinforcing agents.
8. The method for preparing the hot melt adhesive for roll coating of TPE according to claim 7, is characterized in that: the release agent adopts erucamide and oleamide release agents.
9. The method for preparing the hot melt adhesive for roll coating of TPE according to claim 7, is characterized in that: the dispersant is one or more of EBS, monoglyceride and special PE wax.
10. The method for preparing the hot melt adhesive for roll coating of TPE according to claim 7, is characterized in that: the hardening agent is modified sepiolite, and the reinforcing agent is modified nano shell powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210826889.3A CN115181513A (en) | 2022-07-14 | 2022-07-14 | Preparation method of hot melt adhesive for roll coating of TPE |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210826889.3A CN115181513A (en) | 2022-07-14 | 2022-07-14 | Preparation method of hot melt adhesive for roll coating of TPE |
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| CN115181513A true CN115181513A (en) | 2022-10-14 |
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| CN202210826889.3A Pending CN115181513A (en) | 2022-07-14 | 2022-07-14 | Preparation method of hot melt adhesive for roll coating of TPE |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102786898A (en) * | 2012-09-11 | 2012-11-21 | 无锡市万力粘合材料有限公司 | Hot melt adhesive composition for carpet skid resistance and preparation method of hot melt adhesive composition |
| CN103571177A (en) * | 2012-07-20 | 2014-02-12 | 上海日之升新技术发展有限公司 | Nylon carpet yarn recycled material with improved performance and preparation method for same |
| CN104814648A (en) * | 2015-05-08 | 2015-08-05 | 威海德瑞合成纤维有限公司 | Recoverable carpet and production method thereof |
| CN105722934A (en) * | 2013-11-25 | 2016-06-29 | 巴塞尔聚烯烃意大利有限公司 | Polyolefin based hot melt adhesive composition |
| CN110791231A (en) * | 2019-11-26 | 2020-02-14 | 正邦(广州)新材料有限公司 | Self-adhesive cold-seal hot melt adhesive and preparation method and application thereof |
| CN114702918A (en) * | 2021-12-29 | 2022-07-05 | 无锡市万力粘合材料股份有限公司 | Polyolefin system book binding hot melt adhesive and preparation method thereof |
-
2022
- 2022-07-14 CN CN202210826889.3A patent/CN115181513A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103571177A (en) * | 2012-07-20 | 2014-02-12 | 上海日之升新技术发展有限公司 | Nylon carpet yarn recycled material with improved performance and preparation method for same |
| CN102786898A (en) * | 2012-09-11 | 2012-11-21 | 无锡市万力粘合材料有限公司 | Hot melt adhesive composition for carpet skid resistance and preparation method of hot melt adhesive composition |
| CN105722934A (en) * | 2013-11-25 | 2016-06-29 | 巴塞尔聚烯烃意大利有限公司 | Polyolefin based hot melt adhesive composition |
| CN104814648A (en) * | 2015-05-08 | 2015-08-05 | 威海德瑞合成纤维有限公司 | Recoverable carpet and production method thereof |
| CN110791231A (en) * | 2019-11-26 | 2020-02-14 | 正邦(广州)新材料有限公司 | Self-adhesive cold-seal hot melt adhesive and preparation method and application thereof |
| CN114702918A (en) * | 2021-12-29 | 2022-07-05 | 无锡市万力粘合材料股份有限公司 | Polyolefin system book binding hot melt adhesive and preparation method thereof |
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