阅读说明：本技术 一种高厚度高密度耐温毛毡制作工艺 (Manufacturing process of high-thickness high-density temperature-resistant felt ) 是由 梁海坤 于 2019-09-20 设计创作，主要内容包括：本发明公开了一种高厚度高密度耐温毛毡的制作工艺,通过改进针板针刺工艺制备高厚度耐温毛毡,先以基布为基础进行第一次铺料,在进行针刺后得到基布层,然后再次进行多次铺料,且在铺料间隔中通过刺针针刺加固本层和上一层或再上一层的连接,同时,在铺料的间隔中逐渐降低网板的高度,调整进针距离,使得随着毛毡的厚度增加,进针距离减少,在最后过程中,对针刺表面进行修面处理,通过上述改进使其制备出的成品解决了毛毡结构分层、刺针容易损伤、容易断针、表面针孔粗糙等问题,大大的提高了毛毡的高厚度、高密度的可行性,而且表面平整光滑,无需额外使用粘结物粘贴毛毡来补平,气味达标,没有任何二次污染,没有化学药水的气味,节能环保。(The invention discloses a manufacturing process of a high-thickness high-density temperature-resistant felt, which prepares the high-thickness temperature-resistant felt by improving a needle plate needling process, firstly, paving for the first time on the basis of base cloth, obtaining a base cloth layer after needling, then paving for a plurality of times, and reinforcing the connection of the base layer and the previous layer or the next layer through needling in a paving interval, simultaneously, gradually reducing the height of a screen plate in the paving interval, adjusting the needle inserting distance, so that the needle inserting distance is reduced along with the increase of the thickness of the felt, and performing surface modification treatment on the needled surface in the final process, wherein the finished product prepared by the improvement solves the problems of felt structure layering, easy damage of a felting needle, easy needle breakage, rough surface pinholes and the like, greatly improves the feasibility of high thickness and high density of the felt, has a smooth surface, does not need to additionally use a bonding material for leveling, the smell reaches the standard, no secondary pollution is caused, no chemical liquid medicine smell is caused, and the energy-saving and environment-friendly effects are achieved.)

1. A manufacturing process of a high-thickness high-density temperature-resistant felt is characterized by comprising the following steps: comprises a needling process, which comprises the following steps:

a1, feeding a bottom layer, firstly, coating a layer of base fabric, then coating a plurality of layers of net materials, and initially adjusting the parameters of the annular needle machine: after the needle depth D1, the needle frequency C1 and the cloth moving speed B1, carrying out bottom needling, wherein one needle needs to be firm in surface and can be needled for one more time;

a2, feeding the middle layer, turning over the felt obtained in the step A1, feeding, reducing the screen supporting plate by 1mm after every 3 circles of screen materials are fed with 6 circles of screen materials, adjusting the needle depth to slowly reduce from D1 to D2, and keeping the needle frequency and the cloth moving speed unchanged; when the needle depth reaches D2, the net material is loaded, the net supporting plate is lowered by 2mm every 2 circles of the needle depth, and when the needle depth reaches D3, the net material is loaded directly without lowering;

a3, surface layer feeding, and when the net feeding is finished for the last time, adjusting the needling parameters as follows: the needle depth D4, the needle frequency C2 and the cloth moving speed B2 are used for completing one circle of needle punching;

a4, trimming the felt, and adjusting needling parameters: needle depth D5, needle frequency C3, cloth moving speed B3, and repeating the needling for two circles;

the needle depths D1, D2, D3, D4 and D5 are gradually reduced, the needle frequency C1 is greater than C2 and C3, and the cloth moving speeds B1, B2 and B3 are gradually reduced.

2. The manufacturing process of the high-thickness high-density temperature-resistant felt according to claim 1, characterized in that: the integral manufacturing process comprises the following steps:

s1, opening and carding mixed fibers: mixing raw material fibers, and opening and carding the raw material fibers by a carding machine to remove impurities from the mixed fibers;

s2, mixed fiber lapping and needling into a net material: forming a netting material by the carded mixed fibers in the step S1 through a lapping and needling machine;

s3, temperature-resistant woven fabric: forming base cloth by the temperature-resistant thread through a loom;

s4, forming a felt by a circular needling machine: pre-needling the base fabric obtained in the step S3 and the multi-layer net material obtained in the step S2 by using an annular needle machine for multiple times to form a felt;

s5, felt hardening treatment: and (5) hardening the needled product obtained in the step S4 by using silicone oil, and drying at high temperature to ensure that the surface of the needled product does not fall hair, is flat and straight, has a compact internal structure and obtains the high-density felt.

S6, cutting the felt: the felt obtained in step S5 is slit into felt pieces and felt strips according to a desired specification.

3. The manufacturing process of the high-thickness high-density temperature-resistant felt according to claim 1, characterized in that: the needle plate of the annular needle machine comprises two equal partitions, namely a needle area and a face trimming area, wherein the needle area is used for needling the felt, and the face trimming area is used for trimming the felt.

4. The manufacturing process of the high-thickness high-density temperature-resistant felt according to claim 3, characterized in that: the felt is treated with a needle-punched zone in steps a1, a2, A3, and transferred to a modified zone for treatment in step a 4.

5. The manufacturing process of the high-thickness high-density temperature-resistant felt according to claim 3, characterized in that: the pricking needles on the pricking area are triangular needles 25 #.

6. The manufacturing process of the high-thickness high-density temperature-resistant felt according to claim 5, characterized in that: the cloth needle density of the needle punching area is 4400 pieces/m²。

7. The manufacturing process of the high-thickness high-density temperature-resistant felt according to claim 3, characterized in that: the front 4 rows of the modified area are 23# needles, and the back 10 rows are 21# needles.

Technical Field

The invention relates to an aluminum material temperature-resistant felt, in particular to a manufacturing process of a high-thickness high-density temperature-resistant felt.

Background

The felt is a main substrate material manufactured by aluminum profiles and plays roles of pulling, supporting, heat insulation, shock absorption and the like, and the specification and quality of the felt determine the performance, the generation process, the cost, the quality level and the like of the aluminum profiles to a great extent. According to the conventional art, since the higher the thickness of the felt, the more serious the needle breakage of the needle loom is, the felt having a thickness of more than 14mm can be produced only by press-fitting two felts having a low thickness as shown in fig. 2. The above treatment method has the following disadvantages: secondary pollution can be generated on the felt, and the felt is not firmly adhered to the felt, so that the two felts are layered and separated due to insufficient binding force; in the forming process of the felt, the organic solvent is wrapped in the felt, and after forming, the solvent is slowly released, so that the felt has a large smell; the felts are bonded and fixed with each other through bonding materials, the bonding materials are usually toxic and harmful to human bodies, and the two felts can be separated along with the long use time, so that the use time of the felts can be influenced.

Patent document CN105133185A discloses a primary forming process of fully-cured felt, which provides a process comprising the following steps: loosening for one time: steam blowing: hot air blowing and dry air blowing: secondary loosening: carding cotton: spraying an adhesive: spraying: and (4) heating. The forming process adopts heating forming and adhesive addition for bonding, the entanglement and connection effect among fibers is small, the phenomenon of layering and separation caused by insufficient fiber bonding force exists by means of the bonding effect of the adhesive, meanwhile, the odor is large due to the fact that the adhesive is used for bonding, and meanwhile, the adhesive can be aged in the long-term use process to reduce the bonding acting force.

Patent document CN107904779A discloses a laser non-woven felt and a preparation method thereof, which adopts needling and hot press molding, but still adopts the traditional needling process, so that it is difficult to produce high-thickness high-density felt, and the production of high-thickness felt can only be formed by connecting two low-thickness felts through adhesives, and the above problems still exist.

Therefore, a novel felt manufacturing process with high thickness and high density integrated felt is urgently needed to solve the technical problems that the felt manufactured by the prior art has secondary pollution, is easy to separate and has odor exceeding standard.

Disclosure of Invention

The invention aims to provide a manufacturing process of a high-thickness high-density temperature-resistant felt, which aims to solve the technical problems that the felt manufactured by the prior art has secondary pollution, is easy to separate and has over-standard odor.

In order to achieve the purpose, the invention adopts the following technical scheme:

a manufacturing process of a high-thickness high-density temperature-resistant felt comprises a needling process, wherein the manufacturing process comprises the following steps:

a1, feeding a bottom layer, firstly, coating a layer of base fabric, then coating a plurality of layers of net materials, and initially adjusting the parameters of the annular needle machine: after the needle depth D1, the needle frequency C1 and the cloth moving speed B1, carrying out bottom needling, wherein one needle needs to be firm in surface and can be needled for one more time;

a2, feeding the middle layer, namely overturning the felt obtained in the step A1, feeding, reducing the screen supporting plate by 1mm after feeding 6 circles of screen material, and slowly reducing the needle depth from D1 to D2, wherein the needle frequency and the cloth moving speed are kept unchanged; when the needle depth reaches D2, the net material is loaded, the net supporting plate is lowered by 2mm every 2 circles of the needle depth, and when the needle depth reaches D3, the net material is loaded directly without lowering;

a3, surface layer feeding, and when the net feeding is finished for the last time, adjusting the needling parameters as follows: the needle depth D4, the needle frequency C2 and the cloth moving speed B2 are used for completing one circle of needle punching;

a4, trimming the felt, and adjusting needling parameters: needle depth D5, needle frequency C3, cloth moving speed B3, and repeating the needling for two circles;

the needle depths D1, D2, D3, D4 and D5 are gradually reduced, the needle frequency C1 is greater than C2 and C3, and the cloth moving speeds B1, B2 and B3 are gradually reduced.

Optionally, the overall manufacturing process of the high-thickness high-density temperature-resistant felt comprises the following steps:

s1, opening and carding mixed fibers: mixing raw material fibers, and opening and carding the raw material fibers by a carding machine to remove impurities from the mixed fibers;

s2, mixed fiber lapping and needling into a net material: forming a netting material by the carded mixed fibers in the step S1 through a lapping and needling machine;

s3, temperature-resistant woven fabric: forming base cloth by the temperature-resistant thread through a loom;

s4, forming a felt by a circular needling machine: pre-needling the base fabric obtained in the step S3 and the multi-layer net material obtained in the step S2 by using an annular needle machine for multiple times to form a felt;

s5, felt hardening treatment: hardening the needled product obtained in the step S4 by using silicone oil, and drying at high temperature to ensure that the surface of the needled product does not fall off hair, is flat and straight, and has a compact internal structure, thereby obtaining the high-density felt;

s6, cutting the felt: the felt obtained in step S5 is slit into felt pieces and felt strips according to a desired specification.

Optionally, the needle plate of the circular needle machine includes two equal partitions, namely a needle punching area and a face trimming area, wherein the needle punching area is used for needle punching the felt, and the face trimming area is used for face trimming of the felt.

Alternatively, the felt is treated with a needle-punched zone in steps a1, a2, A3, and the felt is transferred to a modified zone for treatment in step a 4.

Optionally, the needles on the needling zone are triangular needles 25 #.

Optionally, the cloth needle density of the needle punching area is 4400 pieces/m²。

Optionally, the front 4 columns of the modified area are 23# needles, and the back 10 columns are 21# needles.

The beneficial effects obtained by the invention are as follows:

according to the invention, the high-thickness temperature-resistant felt is prepared by improving the needle plate needling process, so that the prepared finished product solves the problems of felt structure layering, easy damage of fiber strength needling, easy needle breakage, rough surface needle holes and the like, and greatly improves the feasibility of high thickness and high density of the felt; the felt layers are connected through needling, so that the connection is stable and difficult to separate, the use time is long, the toxicity and the pungent smell of the existing felt which is fixedly bonded through a bonding material are avoided, and the felt is harmless to a human body; the felt surface is flat and smooth, the felt is not required to be additionally pasted with bonding materials to be leveled, the smell reaches the standard, no secondary pollution is caused, the smell of chemical liquid medicine is avoided, and the energy-saving and environment-friendly effects are achieved.

Drawings

The invention will be further understood from the following description in conjunction with the accompanying drawings. The components in the figures are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the embodiments. Like reference numerals designate corresponding parts throughout the different views.

FIG. 1 is a schematic structural view of a felt made in accordance with an embodiment of the present invention;

FIG. 2 is a schematic structural view of a high thickness felt produced by press fitting two low thickness felts according to the prior art;

FIG. 3 is a schematic view of an overall manufacturing process according to an embodiment of the present invention;

FIG. 4 is a detailed step diagram of step S4 in FIG. 3;

FIG. 5 is a schematic structural view of a needle plate according to an embodiment of the present invention;

FIG. 6 is a flow chart of the actual process of the present invention during actual operation;

FIG. 7 is a representation of a felt produced in accordance with the present invention;

FIG. 8 is a view of another embodiment of a felt produced in accordance with the present invention.

Description of reference numerals: 1-base cloth layer, 2-mesh material layer, 3-adhesive layer, 4-trimming area and 5-needling area.

Detailed Description

The invention is further illustrated with reference to the following figures and examples.

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to embodiments thereof; it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. Other systems, methods, and/or features of the present embodiments will become apparent to those skilled in the art upon review of the following detailed description. It is intended that all such additional systems, methods, features and advantages be included within this description, be within the scope of the invention, and be protected by the accompanying claims. Additional features of the disclosed embodiments are described in, and will be apparent from, the detailed description that follows.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms described above will be understood by those of ordinary skill in the art according to the specific circumstances.