CN114290786A - Production method of glue-free decorative plate for vehicle - Google Patents
Production method of glue-free decorative plate for vehicle Download PDFInfo
- Publication number
- CN114290786A CN114290786A CN202111657609.2A CN202111657609A CN114290786A CN 114290786 A CN114290786 A CN 114290786A CN 202111657609 A CN202111657609 A CN 202111657609A CN 114290786 A CN114290786 A CN 114290786A
- Authority
- CN
- China
- Prior art keywords
- polyurethane
- honeycomb paper
- paper core
- felt
- glue
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- 229920002635 polyurethane Polymers 0.000 claims abstract description 42
- 239000004814 polyurethane Substances 0.000 claims abstract description 42
- 239000000463 material Substances 0.000 claims abstract description 31
- 238000005507 spraying Methods 0.000 claims abstract description 17
- 239000000853 adhesive Substances 0.000 claims abstract description 10
- 230000001070 adhesive effect Effects 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 10
- 239000003292 glue Substances 0.000 claims abstract description 8
- 238000005187 foaming Methods 0.000 claims description 12
- 230000000694 effects Effects 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 239000003365 glass fiber Substances 0.000 claims description 3
- 238000004513 sizing Methods 0.000 claims description 3
- 239000000758 substrate Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 230000008595 infiltration Effects 0.000 abstract description 3
- 238000001764 infiltration Methods 0.000 abstract description 3
- 229920000728 polyester Polymers 0.000 abstract description 2
- 238000007493 shaping process Methods 0.000 abstract 1
- 239000000123 paper Substances 0.000 description 35
- 230000003670 easy-to-clean Effects 0.000 description 3
- 239000002994 raw material Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011087 paperboard Substances 0.000 description 1
Landscapes
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Laminated Bodies (AREA)
Abstract
The invention relates to a production method of a glue-free decorative plate for a vehicle, which is used for preparing a finished product through tentering and shaping of a paper core, material stacking, glue spraying of polyurethane, pressure maintaining and plate making, filling and preheating of the polyurethane, presetting of a base plate and curing of parts; the decorative plate produced by the production method of the glue-free decorative plate for the vehicle uses the polyurethane layer to replace a polyester blanket surface material, has beautiful appearance, soft hand feeling, water resistance and infiltration, is easy to wash and dry, and can be suitable for various occasions and various purposes; the use of adhesive is cancelled, and the odor impression of the decorative plate is optimized; and a one-step process is used, so that the production procedures are reduced, and the production efficiency is improved.
Description
Technical Field
The invention belongs to the technical field of composite boards, and particularly relates to a production method of a glue-free decorative board for a vehicle.
Background
A plurality of decorative plates are used in an automobile, such as a spare tire decorative cover plate in a trunk, and due to the fact that the paperboard is used as a base material, the decorative plates similar to the existing decorative plates cannot resist water infiltration and are not easy to clean.
In view of the above, there is a need for a method for producing a non-adhesive decorative sheet for a vehicle, which has no odor of adhesive, good water resistance and is easy to clean.
Disclosure of Invention
The invention aims to provide a production method of an automobile decorative plate which is free of adhesive, good in waterproofness, convenient and easy to clean, and aims to solve the problems of the existing automobile decorative plate.
In order to solve the technical problem, the invention discloses a production method of a glue-free decorative plate for a vehicle, which comprises the following steps:
s1, tentering and setting of a paper core: drawing and stretching the unstretched honeycomb paper into an oven, keeping the unstretched honeycomb paper in the oven for a period of time to ensure that the material is fully stretched into a honeycomb shape and keeps the shape stable, and then cutting the material into a specified shape to obtain a cut honeycomb paper core;
s2, stacking materials: covering glass fiber felts on the upper side and the lower side of the cut honeycomb paper core to obtain a felt-covered honeycomb paper core;
s3, polyurethane glue spraying: spraying polyurethane on the upper surface and the lower surface of the felt-coated honeycomb paper core by taking the polyurethane as a sizing material to obtain the felt-coated honeycomb paper core sprayed with the polyurethane;
s4, pressure maintaining plate manufacturing: placing the polyurethane-sprayed felt-coated honeycomb paper core into a mold with constant temperature, and keeping for a period of time to ensure that the polyurethane material and the felt-coated honeycomb paper core are fully polymerized to obtain a cured and shaped felt-coated honeycomb paper core;
s5, filling and preheating of polyurethane: filling the polyurethane foaming material into a charging tank, and keeping the temperature to be constant so as to ensure the reaction activity of the polyurethane foaming material;
s6, presetting a substrate: and (5) fixing the cured and shaped felt-coated honeycomb paper core obtained in the step S4 on a foaming mould.
S7, curing of parts: injecting the polyurethane foaming material into a mold at high pressure, fully dispersing and maintaining for a period of time, and cooling and demolding to obtain a finished product.
Preferably, in S1, the unstretched honeycomb paper is held by feed rollers and then drawn into an oven.
Preferably, in S3, when spraying the glue, the felt-covered honeycomb paper core is held from the side by a manipulator and fed into the glue spraying area, polyurethane is sprayed on one side of the felt-covered honeycomb paper core, the felt-covered honeycomb paper core is turned over after the polyurethane is sprayed on the one side, and polyurethane is sprayed on the other side.
Preferably, in the step S4, when the board is manufactured under pressure maintaining condition, the felt-covered honeycomb paper core which is solidified and shaped is ensured to be attached to the molded surface of the mold without leaving any gap, so that material leakage in the next process is avoided.
The decorative plate produced by the production method of the glue-free decorative plate for the vehicle uses the polyurethane layer to replace a polyester blanket surface material, has beautiful appearance, soft hand feeling, water resistance and infiltration, is easy to wash and dry, and can be suitable for various occasions and various purposes; the use of adhesive is cancelled, and the odor impression of the decorative plate is optimized; and a one-step process is used, so that the production procedures are reduced, and the production efficiency is improved.
Detailed Description
The present invention is further described in detail below with reference to examples so that those skilled in the art can practice the invention with reference to the description.
It will be understood that terms such as "having," "including," and "comprising," when used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
A production method of a glue-free decorative plate for a vehicle comprises the following steps:
s1, tentering and setting of a paper core: drawing and stretching the unstretched honeycomb paper into an oven, keeping the unstretched honeycomb paper in the oven for a period of time to ensure that the material is fully stretched into a honeycomb shape and keeps the shape stable, and then cutting the material into a specified shape to obtain a cut honeycomb paper core;
s2, stacking materials: covering glass fiber felts on the upper side and the lower side of the cut honeycomb paper core to obtain a felt-covered honeycomb paper core;
s3, polyurethane glue spraying: spraying polyurethane on the upper surface and the lower surface of the felt-coated honeycomb paper core by taking the polyurethane as a sizing material to obtain the felt-coated honeycomb paper core sprayed with the polyurethane;
s4, pressure maintaining plate manufacturing: placing the polyurethane-sprayed felt-coated honeycomb paper core into a mold with constant temperature, and keeping for a period of time to ensure that the polyurethane material and the felt-coated honeycomb paper core are fully polymerized to obtain a cured and shaped felt-coated honeycomb paper core; the fully polymerized polyurethane layer can achieve a better bonding effect;
s5, filling and preheating of polyurethane: filling the polyurethane foaming material into a charging tank, and keeping the temperature to be constant so as to ensure the reaction activity of the polyurethane foaming material;
s6, presetting a substrate: and (5) fixing the cured and shaped felt-coated honeycomb paper core obtained in the step S4 on a foaming mould. In this step, a high-precision mold is used to ensure the pattern on the surface of the product and to prevent flash, and the mold should be re-molded if necessary.
S7, curing of parts: injecting the polyurethane foaming material into a mold at high pressure, fully dispersing and maintaining for a period of time, and cooling and demolding to obtain a finished product. And a one-step process is adopted, so that the production process is favorably reduced, and the production efficiency is improved.
At S1, the unstretched honeycomb paper is held by feed rollers and drawn into an oven.
And S3, when spraying the glue on the polyurethane, clamping the felt-covered honeycomb paper core from the side by using a manipulator, feeding the felt-covered honeycomb paper core into a glue spraying area, spraying the polyurethane on one side of the felt-covered honeycomb paper core, turning over the felt-covered honeycomb paper core after spraying the polyurethane on the one side, and spraying the polyurethane on the other side.
And S4, when the board is manufactured under the pressure maintaining condition, the solidified and shaped felt-covered honeycomb paper core is attached to the molded surface of the mould without gaps, so that material leakage in the next process is avoided.
S4-S7 are new processes, and raw materials, molds and the like used in the new processes are redesigned and invested in manufacturing if the raw materials, the molds and the like cannot be adapted.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable to various fields of endeavor for which the invention may be embodied with additional modifications as would be readily apparent to those skilled in the art, and the invention is therefore not limited to the details given herein and to the embodiments shown and described without departing from the generic concept as defined by the claims and their equivalents.
Claims (4)
1. A production method of a glue-free decorative plate for a vehicle is characterized by comprising the following steps:
s1, tentering and setting of a paper core: drawing and stretching the unstretched honeycomb paper into an oven, keeping the unstretched honeycomb paper in the oven for a period of time to ensure that the material is fully stretched into a honeycomb shape and keeps the shape stable, and then cutting the material into a specified shape to obtain a cut honeycomb paper core;
s2, stacking materials: covering glass fiber felts on the upper side and the lower side of the cut honeycomb paper core to obtain a felt-covered honeycomb paper core;
s3, polyurethane glue spraying: spraying polyurethane on the upper surface and the lower surface of the felt-coated honeycomb paper core by taking the polyurethane as a sizing material to obtain the felt-coated honeycomb paper core sprayed with the polyurethane;
s4, pressure maintaining plate manufacturing: placing the polyurethane-sprayed felt-coated honeycomb paper core into a mold with constant temperature, and keeping for a period of time to ensure that the polyurethane material and the felt-coated honeycomb paper core are fully polymerized to obtain a cured and shaped felt-coated honeycomb paper core;
s5, filling and preheating of polyurethane: filling the polyurethane foaming material into a charging tank, and keeping the temperature to be constant so as to ensure the reaction activity of the polyurethane foaming material;
s6, presetting a substrate: fixing the solidified and shaped felt-coated honeycomb paper core obtained in the step S4 on a foaming mould;
s7, curing of parts: injecting the polyurethane foaming material into a mold at high pressure, fully dispersing and maintaining for a period of time, and cooling and demolding to obtain a finished product.
2. The method for producing a non-adhesive decorative sheet for vehicles according to claim 1, wherein in S1, the unstretched honeycomb paper is pulled and stretched into an oven after being nipped by feed rollers.
3. The method for producing a non-adhesive decorative sheet for vehicles according to claim 1, wherein in S3, a felt-covered honeycomb paper core is held from the side by a robot arm and fed into the adhesive spraying area during the adhesive spraying of polyurethane, polyurethane is sprayed on one side of the felt-covered honeycomb paper core, the felt-covered honeycomb paper core is turned over after the spraying of one side, and polyurethane is sprayed on the other side.
4. The method for producing a non-adhesive decorative sheet for vehicles according to claim 1, wherein in step S4, when the sheet is pressed under a constant pressure, the felt-coated honeycomb paper core is adhered to the mold surface without gaps, thereby avoiding material leakage in the subsequent process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111657609.2A CN114290786A (en) | 2021-12-31 | 2021-12-31 | Production method of glue-free decorative plate for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111657609.2A CN114290786A (en) | 2021-12-31 | 2021-12-31 | Production method of glue-free decorative plate for vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114290786A true CN114290786A (en) | 2022-04-08 |
Family
ID=80974358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111657609.2A Pending CN114290786A (en) | 2021-12-31 | 2021-12-31 | Production method of glue-free decorative plate for vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114290786A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106047266A (en) * | 2016-07-12 | 2016-10-26 | 锋泾（中国）建材集团有限公司 | Environment-friendly all-purpose automatic-spray polyurethane adhesive and preparation method thereof |
| CN108590241A (en) * | 2018-07-10 | 2018-09-28 | 浙江杉盛模塑科技有限公司 | A kind of integral bathroom being made of polyurethane cellular fibrous composite |
| CN111516353A (en) * | 2020-04-21 | 2020-08-11 | 扬州市邗江扬子汽车内饰件有限公司 | Lightweight one-step molded automotive interior part and molding method thereof |
| CN214927817U (en) * | 2021-04-25 | 2021-11-30 | 郑州宇通模具有限公司 | Polyurethane honeycomb composite interior trim part |
-
2021
- 2021-12-31 CN CN202111657609.2A patent/CN114290786A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106047266A (en) * | 2016-07-12 | 2016-10-26 | 锋泾（中国）建材集团有限公司 | Environment-friendly all-purpose automatic-spray polyurethane adhesive and preparation method thereof |
| CN108590241A (en) * | 2018-07-10 | 2018-09-28 | 浙江杉盛模塑科技有限公司 | A kind of integral bathroom being made of polyurethane cellular fibrous composite |
| CN111516353A (en) * | 2020-04-21 | 2020-08-11 | 扬州市邗江扬子汽车内饰件有限公司 | Lightweight one-step molded automotive interior part and molding method thereof |
| CN214927817U (en) * | 2021-04-25 | 2021-11-30 | 郑州宇通模具有限公司 | Polyurethane honeycomb composite interior trim part |
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