CN107813485B - Melamine foam and fiber blending preparation process - Google Patents

Melamine foam and fiber blending preparation process Download PDF

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Publication number
CN107813485B
CN107813485B CN201711059092.0A CN201711059092A CN107813485B CN 107813485 B CN107813485 B CN 107813485B CN 201711059092 A CN201711059092 A CN 201711059092A CN 107813485 B CN107813485 B CN 107813485B
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Prior art keywords
melamine foam
layer
melamine
crushed aggregates
paving
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CN201711059092.0A
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CN107813485A (en
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李福典
李福印
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Zhengzhou Foamtech Nano Material Co Ltd
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Zhengzhou Foamtech Nano Material Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/071—Preforms or parisons characterised by their configuration, e.g. geometry, dimensions or physical properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B11/00—Making preforms
    • B29B11/14—Making preforms characterised by structure or composition
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/26—Component parts, details or accessories; Auxiliary operations
    • B29C51/46—Measuring, controlling or regulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/07—Preforms or parisons characterised by their configuration
    • B29C2949/0715—Preforms or parisons characterised by their configuration the preform having one end closed

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Manufacturing & Machinery (AREA)
  • Laminated Bodies (AREA)
  • Road Paving Structures (AREA)

Abstract

The invention relates to a melamine foam and fiber blending preparation process, which comprises the following steps: 1) crushing the melamine foam waste into melamine foam crushed aggregates with irregular particle sizes for later use; 2) paving a layer of the melamine foam crushed aggregates obtained in the step 1) on a conveyor belt by using a paving device to obtain a bottom melamine foam crushed aggregate layer with the thickness of 1cm-2 cm; 3) spraying fibers at a spraying angle of 45 degrees on the bottom melamine foam crushed material layer obtained in the step 2) to serve as a bonding layer; 4) paving a layer of the melamine foam crushed aggregates obtained in the step 1) with the thickness of 1cm-4cm on the bonding layer in the step 3) to obtain a primary section with a composite layer; 5) hot-pressing the primary section obtained in the step 4) by a hot press at the temperature of 200-230 ℃ and rapidly cooling to obtain melamine foamed cotton; the invention has the advantages of energy saving, environmental protection, high density, good cleaning effect, durability and high noise reduction coefficient.

Description

Melamine foam and fiber blending preparation process
Technical Field
The invention belongs to the technical field of materials for noise reduction, and particularly relates to a preparation process based on melamine foam and fiber blending.
Background
Melamine foam is also called melamine foam, and is a high-open-pore three-dimensional reticular structure foam prepared by adding an auxiliary agent into melamine and formaldehyde resin, can adsorb dirt when being slightly wetted, has obvious cleaning effect, is widely applied to cleaning water scale, oil dirt and dirt on any light and hard surface of tableware, kitchenware, bathrooms, ceramic tiles, household appliances, homes and the like, can cut a whole block of melamine foam according to needs in the process of producing the melamine foam for cleaning, can generate a large amount of waste materials after cutting, and usually adopts the treatment modes of burning, burying and the like for the melamine foam waste materials, so that serious raw material waste can be generated for enterprises, and also serious pollution effect can be generated for the environment. On the other hand, melamine foam is also used for silencing equipment with serious noise for a long time, and the density of silencing holes of the melamine foam used for silencing at present is low, so that the silencing effect is not ideal.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a melamine foam and fiber blending preparation process which is energy-saving, environment-friendly, cost-saving, high in density, durable and high in noise reduction coefficient.
The technical scheme of the invention is as follows:
a preparation process for blending melamine foam and fiber comprises the following steps:
1) crushing the melamine foam waste into melamine foam crushed aggregates with irregular particle sizes for later use;
2) paving a layer of the melamine foam crushed aggregates obtained in the step 1) on a conveyor belt by using a paving device to obtain a bottom melamine foam crushed aggregate layer;
3) spraying fibers on the bottom melamine foam crushed material layer obtained in the step 2) to serve as a bonding layer;
4) paving a layer of the melamine foam crushed aggregates obtained in the step 1) on the bonding layer in the step 3) to obtain a primary section with a composite layer;
5) and (3) carrying out hot pressing on the primary section obtained in the step (4) by using a hot press and rapidly cooling to obtain the melamine foamed plastic.
Furthermore, the particle sizes of the melamine foam particles are all 2-20 mm.
Further, the paving thickness of the melamine foam crushed aggregates in the step 2) is 1cm-2 cm.
Further, the spraying angle of the fibers in the step 3) is 45 degrees.
Further, the thickness of the melamine foam particles paved on the bonding layer in the step 4 is 1cm-4 cm.
Further, the hot pressing temperature in the step 5) is 200-230 ℃.
Further, the melamine foam in the step 5) comprises melamine foam crushed particles and fiber fillers.
Further, the density of the melamine foam is 80kg/m3-200 kg/m3。
Further, the thickness of the melamine foam is 20mm-30 mm.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention utilizes the melamine foam waste to prepare the melamine foam cotton used for noise reduction, carries out secondary processing and utilization on the melamine foam waste in production, reasonably and fully utilizes the raw materials, fully realizes energy saving and environmental protection, and effectively reduces the production cost;
2. the melamine foam crushed aggregates with irregular particle sizes are bonded through hot-melt fibers, the fibers in a molten state have good bonding force on the melamine foam crushed aggregates, and the melamine foam crushed aggregates are effectively fixed and bonded after being rapidly cooled;
3. according to the invention, melamine foam plastic and fiber are hot-pressed at 200-230 ℃, and after melamine foam crushed aggregates are extruded at high temperature, the melamine foam crushed aggregates are effectively modified, so that the number of through holes in unit area is increased, and noise is well absorbed;
4. when the fibers are sprayed, the included angle of 45 degrees between the spraying angle of the fibers and the melamine foam crushed aggregates is kept, so that the fibers can effectively fill the gaps among the melamine foam crushed aggregates, and the melamine foam crushed aggregates can be effectively and effectively bonded with each other quickly in the hot pressing process of the melamine foam crushed aggregates and the fibers;
in a word, the invention has the advantages of energy saving, environmental protection, high density, good cleaning effect, durability and high noise reduction coefficient.
Drawings
FIG. 1 is a schematic view of a cleaning pad according to the present invention.
In the figure: 1. melamine foam crushed material particles, 2, fiber filler.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in 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 process for blending melamine foam and fiber comprises the following steps:
1) crushing the melamine foam waste into melamine foam crushed aggregates with irregular particle sizes for later use;
2) paving a layer of the melamine foam crushed aggregates obtained in the step 1) on a conveyor belt by using a paving device to obtain a bottom melamine foam crushed aggregate layer;
3) spraying fibers on the bottom melamine foam crushed material layer obtained in the step 2) to serve as a bonding layer;
4) paving a layer of the melamine foam crushed aggregates obtained in the step 1) on the bonding layer in the step 3) to obtain a primary section with a composite layer;
5) and (3) carrying out hot pressing on the primary section obtained in the step (4) by using a hot press and rapidly cooling to obtain the melamine foamed plastic.
In the embodiment, the particle sizes of the melamine foam crushed aggregates are all 2-20 mm; the paving thickness of the melamine foam crushed aggregates in the step 2) is 1 cm; the spraying angle of the fibers in the step 3) is 45 degrees; in the step 4, the melamine foam crushed aggregates are paved on the bonding layer, wherein the thickness of the melamine foam crushed aggregates is 4 cm; the hot pressing temperature in the step 5) is 200 ℃.
Example 2
A preparation process for blending melamine foam and fiber comprises the following steps:
1) crushing the melamine foam waste into melamine foam crushed aggregates with irregular particle sizes for later use;
2) paving a layer of the melamine foam crushed aggregates obtained in the step 1) on a conveyor belt by using a paving device to obtain a bottom melamine foam crushed aggregate layer;
3) spraying fibers on the bottom melamine foam crushed material layer obtained in the step 2) to serve as a bonding layer;
4) paving a layer of the melamine foam crushed aggregates obtained in the step 1) on the bonding layer in the step 3) to obtain a primary section with a composite layer;
5) and (3) carrying out hot pressing on the primary section obtained in the step (4) by using a hot press and rapidly cooling to obtain the melamine foamed plastic.
In the embodiment, the particle sizes of the melamine foam crushed aggregates are all 2-20 mm; the paving thickness of the melamine foam crushed aggregates in the step 2) is 2 cm; the spraying angle of the fibers in the step 3) is 45 degrees; in the step 4, the thickness of the melamine foam crushed aggregates paved on the bonding layer is 3 cm; the hot pressing temperature in the step 5) is 230 ℃.
Example 3
A preparation process for blending melamine foam and fiber comprises the following steps:
1) crushing the melamine foam waste into melamine foam crushed aggregates with irregular particle sizes for later use;
2) paving a layer of the melamine foam crushed aggregates obtained in the step 1) on a conveyor belt by using a paving device to obtain a bottom melamine foam crushed aggregate layer;
3) spraying fibers on the bottom melamine foam crushed material layer obtained in the step 2) to serve as a bonding layer;
4) paving a layer of the melamine foam crushed aggregates obtained in the step 1) on the bonding layer in the step 3) to obtain a primary section with a composite layer;
5) and (3) carrying out hot pressing on the primary section obtained in the step (4) by using a hot press and rapidly cooling to obtain the melamine foamed plastic.
In the embodiment, the particle sizes of the melamine foam crushed aggregates are all 2-20 mm; the paving thickness of the melamine foam crushed aggregates in the step 2) is 1 cm; the spraying angle of the fibers in the step 3) is 45 degrees; in the step 4, the thickness of the melamine foam crushed aggregates paved on the bonding layer is 3 cm; the hot pressing temperature in the step 5) is 220 ℃.
Example 4
A preparation process for blending melamine foam and fiber comprises the following steps:
1) crushing the melamine foam waste into melamine foam crushed aggregates with irregular particle sizes for later use;
2) paving a layer of the melamine foam crushed aggregates obtained in the step 1) on a conveyor belt by using a paving device to obtain a bottom melamine foam crushed aggregate layer;
3) spraying fibers on the bottom melamine foam crushed material layer obtained in the step 2) to serve as a bonding layer;
4) paving a layer of the melamine foam crushed aggregates obtained in the step 1) on the bonding layer in the step 3) to obtain a primary section with a composite layer;
5) and (3) carrying out hot pressing on the primary section obtained in the step (4) by using a hot press and rapidly cooling to obtain the melamine foamed plastic.
In the embodiment, the particle sizes of the melamine foam crushed aggregates are all 2-20 mm; the paving thickness of the melamine foam crushed aggregates in the step 2) is 1cm-2 cm; the spraying angle of the fibers in the step 3) is 45 degrees; in the step 4, the melamine foam crushed aggregates are paved on the bonding layer, wherein the thickness of the melamine foam crushed aggregates is 1cm-4 cm; the hot pressing temperature in the step 5) is 200-230 ℃.
In the melamine foam prepared by the method in the embodiment, the melamine foam in the step 5) comprises melamine foam crushed aggregates 1 and fiber fillers 2; the density of the melamine foam is 80kg/m3-200 kg/m3。
In conclusion, the preparation method provided by the invention is adopted to crush the melamine foam waste into melamine foam crushed pieces with the particle size of 2-20 mm, spray fibers at a spray angle of 45 degrees, and then carry out hot press molding at the temperature of 200-230 ℃ by a hot press to prepare the high-strength durable melamine foam with high noise reduction coefficient, and the density of the finished product melamine foam is improved to 80kg/m3-200 kg/m3Effectively improving the strength of the melamine foamed plastic and prolonging the service life of the melamine foamed plastic.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.

Claims (4)

1. A preparation process for blending melamine foam and fiber is characterized by comprising the following steps: the method comprises the following steps:
1) crushing the melamine foam waste into melamine foam crushed aggregates with irregular particle sizes for later use;
2) paving a layer of the melamine foam crushed aggregates obtained in the step 1) on a conveyor belt by using a paving device to obtain a bottom melamine foam crushed aggregate layer;
3) spraying fibers on the bottom melamine foam crushed material layer obtained in the step 2) to serve as a bonding layer;
4) paving a layer of the melamine foam crushed aggregates obtained in the step 1) on the bonding layer in the step 3) to obtain a primary section with a composite layer;
5) hot-pressing the primary section obtained in the step 4) by using a hot press and rapidly cooling to obtain melamine foamed cotton;
the particle size of the melamine foam crushed aggregates is 2mm-20 mm;
the paving thickness of the melamine foam crushed aggregates in the step 2) is 1cm-2 cm;
the spraying angle of the fibers in the step 3) is 45 degrees;
in the step 4, the melamine foam crushed aggregates are paved on the bonding layer, wherein the thickness of the melamine foam crushed aggregates is 1cm-4 cm;
the hot pressing temperature in the step 5) is 200-230 ℃.
2. The melamine foamed cotton prepared by the melamine foam and fiber blending preparation process as claimed in claim 1, wherein: the melamine foam in the step 5) comprises melamine foam crushed aggregates particles (1) and fiber fillers (2).
3. The melamine foam as set forth in claim 2, wherein: the density of the melamine foam is 80kg/m3-200kg/m3。
4. The melamine foam as set forth in claim 2, wherein: the thickness of the melamine foam is 20mm-30 mm.
CN201711059092.0A 2017-11-01 2017-11-01 Melamine foam and fiber blending preparation process Active CN107813485B (en)

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Application Number Priority Date Filing Date Title
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CN107813485B true CN107813485B (en) 2020-08-04

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KR20240023434A (en) * 2021-06-17 2024-02-21 바스프 에스이 Method for manufacturing melamine resin foam using crushed melamine foam particles

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CN101563189A (en) * 2006-12-21 2009-10-21 3M创新有限公司 Abrasive article and methods of making same
CN106633629A (en) * 2016-12-29 2017-05-10 成都玉龙超聚新材料有限公司 Hot press molded melamine foam prepared by hot press molding and preparation method thereof

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1897859A (en) * 2003-12-22 2007-01-17 金伯利-克拉克环球有限公司 Multi purpose cleaning product including a foam and a web
CN101563189A (en) * 2006-12-21 2009-10-21 3M创新有限公司 Abrasive article and methods of making same
CN106633629A (en) * 2016-12-29 2017-05-10 成都玉龙超聚新材料有限公司 Hot press molded melamine foam prepared by hot press molding and preparation method thereof

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