CN105398184A - Production method of flexible PU skylight sun shield - Google Patents
Production method of flexible PU skylight sun shield Download PDFInfo
- Publication number
- CN105398184A CN105398184A CN201510699190.5A CN201510699190A CN105398184A CN 105398184 A CN105398184 A CN 105398184A CN 201510699190 A CN201510699190 A CN 201510699190A CN 105398184 A CN105398184 A CN 105398184A
- Authority
- CN
- China
- Prior art keywords
- barrier film
- production method
- mould
- soft
- sunshading board
- 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.)
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Classifications
-
- 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
- B32B38/00—Ancillary operations in connection with laminating processes
-
- 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
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B2038/0052—Other operations not otherwise provided for
Abstract
The invention relates to a production method of a flexible PU skylight sun shield. The material of the flexible PU skylight sun shield comprises a back nonwoven fabric, a second isolation film, a second glass fiber layer, a PU foam plate with two glued and water-sprayed sides, a first glass fiber layer, a first isolation film and a fabric. The method is characterized in that the material is put in a die, then die opening-free air discharge is carried out, and the isolation films are punctured by a sharp part to discharge air in the isolation films, so the bump problem of skylight sun shields is solved.
Description
Technical field
The application relates to the production technology of automotive upholstery, is specifically related to a kind of production method of soft PU dormer window sunshading board.
Background technology
Soft PU dormer window sunshading board, structure as shown in Figure 1, from backing layer to surface layer, be followed successively by backing layer non-woven fabrics 7, second barrier film 6, second fiberglass layer 5, double spread and water spray PU cystosepiment 4, first fiberglass layer 3, first barrier film 2, fabric 1.
Production method is, PU foam double-side is coated with polyurethane foam glue and sprays water, then according to being followed successively by backing layer non-woven fabrics 7, second barrier film 6, second fiberglass layer 5, double spread from top to bottom, also PU cystosepiment 4, first fiberglass layer 3, first barrier film 2 of water spray, the order of fabric 1 put into mold heat, pressurize a period of time, then die sinking.In mould, polyurethane foam glue and water react, and foam, and through the first fiberglass layer 3 and the second fiberglass layer 5, PU cystosepiment 4 and the first barrier film 2, second barrier film 6 are bonded together.
First barrier film 2 scribbles hot melt layer towards the side of fabric 1, and hot melt layer melts in mould, and fabric 1 is bonded on barrier film 2.Second barrier film 6 scribbles hot melt layer towards the side of backing layer non-woven fabrics 7, and hot melt layer melts in mould, and backing layer non-woven fabrics 7 is bonded on barrier film 6.
Because polyurethane foam glue and water react, can generate gas, when there is barrier film on two sides, gas is closed can not discharge, and when product takes out from mould, gas expansion causes product surface to occur bulge.
The method of current employing is breathing a mould, and after namely mold heat put into by material, polyurethane foam glue and water react and generates a certain amount of gas, and mould is opened, and gas is drained, matched moulds pressurize again.Because during exhaust, gas can be washed barrier film open, and during matched moulds, unreacted glue is stained with barrier film more again, so exhaust is carried out after foamed glue can not be waited thoroughly to react, otherwise again after matched moulds, material can not be bonded together, and product just can not be shaping.Exactly because also exhaust must be carried out before foamed glue thoroughly reacts, although so take breathing a mould measure, in final matched moulds pressure maintaining period, still have gas and produce, amount of gas is too many, and the situation still having bulge occurs.
Another kind of measure is punched on barrier film, and gas is discharged in hole.But the effect of barrier film is that on barrier film after punching, polyurethane foam glue can be penetrated on fabric 1 or backing layer non-woven fabrics 7 by pore after expanding, causes seep through, forms waste product through fabric 1 or backing layer non-woven fabrics 7 after preventing polyurethane foam glue from foaming.
Summary of the invention
The object of the application solves in soft PU dormer window sunshading board production process exactly, and polyurethane foam glue and water react the gas produced can not discharge the problem causing product surface bulge to produce waste product.
The technical scheme of the application comprises the steps: PU cystosepiment two-sided painting polyurethane foam glue and sprays water, then according to be followed successively by from top to bottom backing layer non-woven fabrics, the second barrier film, the second fiberglass layer, double spread and water spray PU cystosepiment, the first fiberglass layer, the first barrier film, fabric order material is put into mold heat, matched moulds pressurize, reach die sinking after open time, it is characterized in that, before die sinking, in mould, puncture barrier film.
Preferably, after the pressurize of mold heat matched moulds put into by material, before puncturing barrier film, 1-3 breathing a mould is carried out.
Preferably, 1-10s before die sinking on opportunity of barrier film is punctured.
Preferably, the second barrier film is only punctured.
The mould that aforementioned schemes uses, mould arranges the cuspidated sharp component of band that extended die face enters die cavity, at the preliminary stage of pressurize, the tip of sharp component is not higher than die face, barrier film can not be punctured, 1-10s before die sinking, the tip of sharp component, higher than die face, punctures barrier film.
Adopt the scheme of the application, when mould just put into by material, barrier film does not have hole, so penetrate into the surface of fabric and backing layer non-woven fabrics after can preventing polyurethane foam glue from foaming.1-10s before die sinking, polyurethane foam matrix originally reacts completely, and mobility is deteriorated, and even has cured, then punctures barrier film with sharp component, do not have glue and appear from pore, there will not be fabric and backing layer nonwoven surface to occur the problem of seep through.
After the pressurize of mold heat matched moulds put into by material, before puncturing barrier film, carry out 1-3 breathing a mould, most of gas is discharged by breathing a mould operation, the pressure that in barrier film, accumulation is too high can be prevented, fabric or tegillum non-woven fabrics can carry on the back the breach clamp-oned and install sharp component, and product is left a trace.
Accompanying drawing explanation
The material structure schematic diagram of the soft PU dormer window sunshading board of Fig. 1;
The schematic diagram of Fig. 2 sharp component retracted mode;
The schematic diagram of Fig. 3 sharp component raised configuration.
Detailed description of the invention
A production method for dormer window sunshading board, adopts the PU cystosepiment of 7mm, two-sided according to 150g/m
2glue amount roller coat polyurethane foam glue, water spray after and other materials stack; Fabric 1 adopts 250g/m
2needle punched non-woven fabrics, a GMPU layer 3 and the 2nd GMPU layer 5 adopt 300g/m
2chopped Strand Mat, backing layer non-woven fabrics 7 adopts 150g/m
2needle punched non-woven fabrics.First barrier film 2 and the second barrier film 6 are multilayer film, and at least comprise low melting point layer unification high-melting-point layer, in mould during pressurize, low melting point layer melts, and dare to adhesives, and high-melting-point layer can not melt, and plays the effect of isolation glue.Mold temperature 150 DEG C, dwell time 45s.
If adopt prior art to produce, only have heat-insulation pressure keeping process after matched moulds, after die sinking, product surface there will be bulge.
If breathing a mould, the opportunity of die sinking is difficult to hold, and too early, the gas produced in second time pressure maintaining period is too many, still has serious bulge in die sinking; Too late, then during matched moulds, glue solidifies substantially in die sinking, and the pressure after die sinking in barrier film is divided into material two-layer, and during pressurize, material can not bond together again, and product can not be shaping, causes even more serious defect.
If before putting into mould, first the first barrier film or the second barrier film are punctured, then the product surface of final production there will be seep through.
Embodiment 1
When mould put into by material, sharp component is retracted under die face, as shown in Figure 2, when pressurize is to 40s, the sharp component in bed die rises, as shown in Figure 3, puncture the second barrier film 6, the gas between two-layer barrier film is overflowed from the hole punctured by sharp component, and then sharp component is retracted under die face again, die sinking after 45s, product surface is smooth, does not have bulge, does not also have seep through, only backing layer non-woven fabrics there is the hole not easily discovered, do not affect outward appearance and the performance of product.
Embodiment 2
When pressurize is to 10s, carry out breathing a mould, secondary pressurize 15s, breathing a mould again, when three pressurizes are to 10-15s, the sharp component in bed die rises and retracts, puncture the second barrier film 6, the hole effusion that gas within barrier film is punctured by sharp component, then pressurize 3-5s guarantees that the gas pressure in barrier film disappears, then die sinking.The product surface that this method is produced is smooth, does not have bulge, does not also have seep through, only backing layer non-woven fabrics has the hole not easily discovered, do not affect outward appearance and the performance of product.
Claims (4)
1. the production method of a soft PU dormer window sunshading board, comprise following production stage: PU cystosepiment two-sided painting polyurethane foam glue is also sprayed water, according to being followed successively by backing layer non-woven fabrics from top to bottom, second barrier film, second fiberglass layer, the PU cystosepiment that double spread is also sprayed water, first fiberglass layer, first barrier film, the order of fabric puts into mold heat material, matched moulds pressurize, reach die sinking after open time, it is characterized in that, mould arranges the sharp component that can rise and retract, when putting into material, sharp component is retracted, lower than die face, before die sinking, sharp component rises and retracts, puncture barrier film, eliminate the pressure in barrier film.
2. the production method of soft PU dormer window sunshading board as claimed in claim 1, is characterized in that, after the pressurize of mold heat matched moulds put into by material, before puncturing barrier film, carries out 1-3 breathing a mould.
3. the production method of soft PU dormer window sunshading board as claimed in claim 1 or 2, is characterized in that, the action 1-10s before die sinking puncturing barrier film carries out.
4. the production method of soft PU dormer window sunshading board as claimed in claim 1 or 2, is characterized in that, only on the mould of backing layer non-woven fabrics one side, arranges sharp component, punctures the second barrier film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510699190.5A CN105398184A (en) | 2015-10-26 | 2015-10-26 | Production method of flexible PU skylight sun shield |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510699190.5A CN105398184A (en) | 2015-10-26 | 2015-10-26 | Production method of flexible PU skylight sun shield |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105398184A true CN105398184A (en) | 2016-03-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510699190.5A Pending CN105398184A (en) | 2015-10-26 | 2015-10-26 | Production method of flexible PU skylight sun shield |
Country Status (1)
| Country | Link |
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| CN (1) | CN105398184A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111037825A (en) * | 2019-12-18 | 2020-04-21 | 溧阳市山湖实业有限公司 | PHC luggage case cover plate one-step forming synthesis method |
| CN111844778A (en) * | 2020-05-27 | 2020-10-30 | 南京南条全兴汽车内饰系统有限公司 | Method for attaching surface skin of vehicle door interior trim panel |
Citations (4)
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| CN102029951A (en) * | 2010-11-17 | 2011-04-27 | 烟台正海汽车内饰件有限公司 | Sound insulating pad-top cover reinforcing beam for car roof and preparation method thereof |
| CN102320138A (en) * | 2011-09-10 | 2012-01-18 | 无锡吉兴汽车声学部件科技有限公司 | Manufacturing method of ultra-mute car ceiling |
| CN202934750U (en) * | 2012-11-21 | 2013-05-15 | 湖北双鸥汽车饰件有限公司 | Deep cavity exhaust device of carpet foaming forming die |
| CN103753891A (en) * | 2013-12-30 | 2014-04-30 | 天津博信汽车零部件有限公司 | Automobile interior trim part and forming process for same |
-
2015
- 2015-10-26 CN CN201510699190.5A patent/CN105398184A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102029951A (en) * | 2010-11-17 | 2011-04-27 | 烟台正海汽车内饰件有限公司 | Sound insulating pad-top cover reinforcing beam for car roof and preparation method thereof |
| CN102320138A (en) * | 2011-09-10 | 2012-01-18 | 无锡吉兴汽车声学部件科技有限公司 | Manufacturing method of ultra-mute car ceiling |
| CN202934750U (en) * | 2012-11-21 | 2013-05-15 | 湖北双鸥汽车饰件有限公司 | Deep cavity exhaust device of carpet foaming forming die |
| CN103753891A (en) * | 2013-12-30 | 2014-04-30 | 天津博信汽车零部件有限公司 | Automobile interior trim part and forming process for same |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111037825A (en) * | 2019-12-18 | 2020-04-21 | 溧阳市山湖实业有限公司 | PHC luggage case cover plate one-step forming synthesis method |
| CN111844778A (en) * | 2020-05-27 | 2020-10-30 | 南京南条全兴汽车内饰系统有限公司 | Method for attaching surface skin of vehicle door interior trim panel |
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Application publication date: 20160316 |