CN103386755A - Glue coating method used in plastic suction molding - Google Patents
Glue coating method used in plastic suction molding Download PDFInfo
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- CN103386755A CN103386755A CN2013103041545A CN201310304154A CN103386755A CN 103386755 A CN103386755 A CN 103386755A CN 2013103041545 A CN2013103041545 A CN 2013103041545A CN 201310304154 A CN201310304154 A CN 201310304154A CN 103386755 A CN103386755 A CN 103386755A
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Abstract
The invention relates to a glue coating method used in plastic suction molding. The glue coating method is characterized in that in a vacuum plastic suction process, a process adopting a coating roller group is used and glue is coated with rotation of coating rollers. In the vacuum plastic suction process, the glue coating method realizes glue coating without manual operation and has a high automation degree and good coating uniformity. The coating rollers rotate through glue so that the glue adheres to the surfaces of the coating rollers and when a decoration material passes through the coating rollers, the glue is transferred to the back surface of the decoration material. A glue coating amount can be adjusted according to different reticulate pattern designs. Fully-curable glue can be adopted so that the adhesion between the glue and the decoration material is greater than material contractility so that it is avoided that the material is separated from the edge of a plastic suction workpiece because of material shrinkage so that the plastic suction workpiece is disabled.
Description
Technical field
The present invention relates to a kind of painting method of glue, relate in particular to the painting method of the glue in a kind of vacuum suction moulding.
Background technology
Nowadays the ornament materials scope of application is more and more wider, but plastic foil etc. as home decoration material plastic uptake, fit in a plurality of places such as cabinet, wardrobe, audio amplifier, door and window, can fit in the places such as cabin, interior of aircraft, wall panel at public area, can be with plastic uptake method plastic uptake to corresponding automobile workpiece as automotive trim.All need to use glue in the technique of above-mentioned laminating and plastic uptake, just can make decorating film and workpiece laminating closely, durable.Plastic uptake technique is a kind of plastic processing, and cardinal principle is with after open and flat plastic hard plate material heating deliquescing, adopts vacuum suction in die surface, and cooling forming, be widely used in the industries such as plastics package, lamp decoration, advertisement, decoration.
Whole plastic uptake operation comprises: glue mixing match, glue coated, vacuum suction moulding.
Wherein the glue mixing match is to join according to a certain percentage curing agent in glue before glue coated, the ratio of the time that wherein adds and the curing agent that adds and glue has material impact for the adhesion strength of final plastics sucking moulding, general spraying glue is to add before use curing agent about half an hour, to avoid adding the glue of curing agent solidify gradually before use and lost efficacy.
Wherein glue coated is before plastics sucking moulding, glue to be coated on ornament materials or workpiece.The mode that glue applies is to the bond strength of workpiece and ornament materials also important, and the mode of glue coating is determining the efficiency of production technology.
Wherein vacuum suction moulding is a kind of thermoforming processing method, is to utilize the thermoplastic plastic sheet, makes a kind of method of shedding shell goods.Plastic sheet is cut into the certain size thermoplastic,, by draught head or the mechanical pressure on sheet material two sides, posts on specific mold profile face after making its distortion, through cooling and shaping, and the trimming finishing.This forming method of vacuum suction moulding is to rely on the distortion of air pressure official post sheet material stretching.Draught head is easily realized, grasps and is controlled, and therefore simple vacuum forming is to occur the earliest, is also present most widely used a kind of thermoforming process.
At present, the glue in plastics sucking moulding applies generally three kinds of methods, and a kind of is manually directly glue to be sprayed on the workpiece of various shapes; The second is that automation ground directly is coated on glue on the decorating film bottom surface, and one deck PETG (PET) film of fitting again after semi-solid preparation half surface drying is as the interlayer of glue with the external world; But the third be automation ground directly PUR or semi-solid preparation but the glue of surface drying be coated on the decorating film bottom surface.Yet above-mentioned three kinds of methods all have certain shortcoming.
The artificial direct spraying method of the first, automaticity is low, efficiency is low, and for grotesque workpiece, is difficult to relatively guarantee that each position sprays glue equably.The direct method at decorating film backside coating glue of second and third kind, automaticity is high, efficiency is high, but because glue is to be coated on semi-finished product, through putting in storage, sell, transport supervisor, service time is fixing, even reaches just use after half a year, and this requires glue to be in for a long time semi-cured state; This type of glue is expensive, even requires the cold chain accumulating, further significantly raises the cost; , because this type of glue often is difficult to solidify fully, cause decorating film and workpiece laminating or plastic uptake not tight, and the heat resistance of PUR class is poor especially; Particularly in the utilization of PVC decorating film plastic uptake, the workpiece after plastic uptake is when the environment for use of higher temperature, and due to the thermal shrinkage force of glue cohesive force less than PVC, during heating, PVC shrinks and causes the PVC film to break away from the workpiece edge, can cause whole workpiece to be scrapped.
Therefore, the method for the glue coated that a kind of plastic uptake of needs exploitation is used, can meet the process automation degree high on the one hand, can meet the demand that the glue curing ability is strong, cohesive force is good again on the other hand.
Summary of the invention
The object of the invention is to that the automaticity that the glue coated of using for present plastic uptake exists is low, efficiency is low or expensive, with workpiece laminating or the untight shortcoming of plastic uptake, the method for the glue coated that a kind of plastic uptake uses is provided.
It is high that the method for the glue coated that plastic uptake provided by the invention is used can meet the process automation degree, the requirement that the glue curing ability is strong, cohesive force is good.
Glue painting method in plastics sucking moulding provided by the invention, increased an operation in vacuum forming technique, increased the applicator roll group, glue coated in the time of the applicator roll rotation.
Applicator roll can be realized simple coating operation, is applicable to the formulation that wide variety of substrates is filmed, and glue can be applied on many kinds of grounds in this way, comprises paper, cardboard, plastic film, paper tinsel, metallic plate, glass plate and plank etc.Utilize applicator roll to apply and make glue coated not rely on manually-operated, automaticity is high and apply even.
As optimal technical scheme, glue coating procedure of the present invention is: ornament materials (8) launches, enter applicator roll group (5) after a series of carry-over pinch rolls (7), when lower roll rotates, the glue of gum box (6) is attached to the lower roll surface of applicator roll group, ornament materials, through the applicator roll group, under the pressure of top roll, makes glue be coated to the back side of ornament materials.
Ornament materials wherein can be plastic foil, plastic sheet, artificial leather etc.
As optimal technical scheme, plastics sucking moulding process of the present invention is: the ornament materials that will apply glue continues to be fed forward, the place ahead has the certain fixture of width to fix, be fixed rear use cut-off knife (4) cutting of ornament materials, the ornament materials of severing (3) is transferred in plastics suction mould (2), upper/lower die (1,2) closure, carry out vacuum suction moulding.If use hand spray glue, workpiece can directly be shifted in No. 2 moulds and carry out plastics sucking moulding after spraying.
Preferably, will be transferred to the ornament materials preheating of plastics suction mould before vacuum suction moulding.Preheating is in order to make ornament materials softening, just can fit with mould under vacuum pressure after softening, and is shaped to the shape of mould.
Preferably, the time of described preheating be more than 30s, such as being 35s, 40s, 44s, 48s, 55s, 1min3s, 1min10s, 1min20s etc., preheating time is too short, does not reach the purpose of softening ornament materials, and the time is oversize, increased again the production duration, be unfavorable for raising the efficiency, therefore, in the present invention, be preferably 1min heat time heating time.
As optimal technical scheme, glue of the present invention adds curing agent in 120min before coating, such as adding in 115min, 100min, 90min, 85min, 75min, 60min, 54min, 45min, 42min, 39min, in 35min, in 33min, in 28min, in 25min, in 20min, in 15min, in 10min etc.Just add curing agent in 120min before using, to avoid adding the glue of curing agent solidify gradually before use and lost efficacy, in preferred 60min, in further preferred 30min.
Preferably, the weight ratio of described curing agent and glue is 3-15:100,, such as being 4:100,4.8:100,6:100,8:100,9:100,11:100,13:100,14:100 etc., is preferably 5-10:100, more preferably 7:100.Glue painting method of the present invention adds curing agent before use,, in conjunction with ability to cure strong curing agent and glue, can make the ability to cure of glue stronger, and cohesive force is better.
As optimal technical scheme, applicator roll of the present invention designs for reticulate pattern., by using the applicator roll of reticulate pattern design, can regulate glue and be coated in amount on ornament materials, to meet the requirement of different ornament materials required different cohesive force when the plastic uptake.
Preferably, the order number of described reticulate pattern is 10 orders-80 orders, is for example 20 orders, 40 orders, 60 orders, is preferably 40 orders.
As optimal technical scheme, the method of the invention comprises the steps: that ornament materials (8) launches, enter applicator roll group (5) after a series of carry-over pinch rolls (7), when lower roll rotates, the glue of gum box (6) is attached to the lower roll surface of applicator roll group, ornament materials, through the applicator roll group, under the pressure of top roll, makes glue be coated to the back side of ornament materials;
Wherein the glue in gum box is before apply starting in 120min, by the weight ratio of curing agent and glue, is that 3-15:100 adds curing agent.
The present invention has increased an operation in vacuum forming technique, added the applicator roll group, and glue coated in the time of the applicator roll rotation, make glue coated not rely on manually-operated, and automaticity is high and apply even.The applicator roll rotation is through glue, glue is attached on roll surface, during ornament materials process applicator roll group, glue is transferred to the back side of ornament materials, glue-spread can adopt reticulate pattern design or other any suitable modes to regulate, and, due to the glue that can adopt completion of cure, makes the convergent force of the cohesive force of glue and ornament materials greater than material, can avoid Material shrinkage to break away from the workpiece edge, cause the plastic uptake workpiece not use.
The method of the glue coated that plastic uptake provided by the invention is used, can meet the process automation degree high, the requirement that the glue curing ability is strong, cohesive force is good.Just add before use curing agent,, to avoid adding the glue of curing agent solidify gradually before use and lost efficacy,, in conjunction with ability to cure strong curing agent and glue, can make the ability to cure of glue stronger, cohesive force is better.
Description of drawings
Fig. 1 is the process chart of glue coated of the present invention.
In figure: 1-plastic uptake upper mold; 2-plastic uptake lower mold; The plastic uptake sample of 3-die size; The 4-cut-off knife; The 5-applicator roll; The 6-gum box; 8-ornament materials semi-finished product.
The specific embodiment
For ease of understanding the present invention, it is as follows that the present invention enumerates embodiment.Those skilled in the art should understand, described embodiment only is used for helping to understand the present invention, should not be considered as concrete restriction of the present invention.
As no specific instructions, various raw material of the present invention all can obtain by commercially available; Or according to the conventional method of this area, prepare.Unless otherwise defined or explanation, the meaning that all specialties used herein are familiar with scientific words and those skilled in the art is identical.Any method similar or impartial to described content and material all can be applicable in the inventive method in addition.
The experimental technique of unreceipted actual conditions in the following example, measure according to national standard usually.If there is no corresponding national standard, according to general international standard, normal condition or according to the condition that manufacturer advises, carry out.Unless otherwise indicated, otherwise all umbers are weight portion, and all percentages are weight percentage.
Embodiment
Below with reference to accompanying drawing and preferred embodiment, characteristics of the present invention and advantage are described in further detail.
As shown in Figure 1, the embodiment of the present invention provides a kind of method of glue coated of plastic uptake PVC automotive interior material, and whole plastic uptake operation comprises: glue mixing match, glue coated, vacuum suction moulding.Vacuum suction moulding equipment heating-up temperature is 140 ℃, and carrying out needs to add in advance curing agent in glue before the plastic uptake operation, and the ratio of the present embodiment curing agent addition and glue consumption is 7:100.Having added the glue of curing agent finishes using in 30min.
PVC automotive trim decorative coiled material 8 is through a series of carry-over pinch rolls, unwind roll, be delivered to applicator roll 5, what the present embodiment used is 40 purpose anilox roll, the glue that has added curing agent is coated to the back side of PVC ornament materials through applicator roll, then pass through cut-off knife, tailor out the length of 1m, be transferred under fixture in the vacuum forming mould, carry out plastics sucking moulding after preheating 1min.
After plastics sucking moulding, workpiece is tested,, due to the specific (special) requirements of automotive trim, needed the variation of testing automobile interior material workpiece after 70-90 ℃ of lower 200h.The present embodiment is under 90 ℃, and the workpiece outwardly sound of plastic uptake automotive interior material after 200h, interior material do not break away from workpiece edge, test passes because shrink.This has illustrated this kind glue spreading method ratio in advance at ornament materials backside coating glue, then the method for the PET barrier paper of fitting is more winning, can realize automation mechanized operation simultaneously.
Applicant's statement, the present invention illustrates detailed process equipment and process flow process of the present invention by above-described embodiment, but the present invention is not limited to above-mentioned detailed process equipment and process flow process, does not mean that namely the present invention must rely on above-mentioned detailed process equipment and process flow process and could implement.The person of ordinary skill in the field should understand, any improvement in the present invention, to the interpolation of the equivalence replacement of each raw material of product of the present invention and auxiliary element, the selection of concrete mode etc., within all dropping on protection scope of the present invention and open scope.
Claims (10)
1. the glue painting method in a vacuum suction moulding, is characterized in that, increased an operation in vacuum forming technique, increased the applicator roll group, glue coated in the time of the applicator roll rotation.
2. method according to claim 1, it is characterized in that, described glue coating procedure is: ornament materials (8) launches, enter applicator roll group (5) after a series of carry-over pinch rolls (7), when lower roll rotated, the glue of gum box (6) was attached to the lower roll surface of applicator roll group, and ornament materials is through the applicator roll group, under the pressure of top roll, make glue be coated to the back side of ornament materials.
3. method according to claim 1 and 2, it is characterized in that, described plastics sucking moulding process is: the ornament materials that will apply glue continues to be fed forward, the place ahead has the certain fixture of width to fix, be fixed rear use cut-off knife (4) cutting of ornament materials, the ornament materials of severing (3) is transferred in plastics suction mould (2), and upper/lower die (1,2) closure, carry out vacuum suction moulding.
4. method according to claim 3, is characterized in that, will be transferred to the ornament materials preheating of plastics suction mould before vacuum suction moulding.
5. method according to claim 4, is characterized in that, the time of described preheating be more than 30s, to be preferably 1min.
6. according to claim 1-5 described methods of any one, is characterized in that, described glue adds curing agent in 120min before coating, in preferred 60min, in further preferred 30min.
7. method according to claim 6, is characterized in that, the weight ratio of described curing agent and glue is 3-15:100, is preferably 5-10:100, more preferably 7:100.
8. according to claim 1-7 described methods of any one, is characterized in that, described applicator roll designs for reticulate pattern.
9. method according to claim 8, is characterized in that, the order number of described reticulate pattern is 10 orders-80 orders, is preferably 40 orders.
10. according to claim 1-9 described methods of any one, it is characterized in that, described method comprises the steps: that ornament materials (8) launches, enter applicator roll group (5) after a series of carry-over pinch rolls (7), when lower roll rotated, the glue of gum box (6) was attached to the lower roll surface of applicator roll group, and ornament materials is through the applicator roll group, under the pressure of top roll, make glue be coated to the back side of ornament materials;
Wherein the glue in gum box is before apply starting in 120min, by the weight ratio of curing agent and glue, is that 3-15:100 adds curing agent.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013103041545A CN103386755A (en) | 2013-07-15 | 2013-07-15 | Glue coating method used in plastic suction molding |
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| CN2013103041545A CN103386755A (en) | 2013-07-15 | 2013-07-15 | Glue coating method used in plastic suction molding |
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| CN2013103041545A Pending CN103386755A (en) | 2013-07-15 | 2013-07-15 | Glue coating method used in plastic suction molding |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108749268A (en) * | 2018-06-12 | 2018-11-06 | 惠州市优品新材料有限公司 | A kind of PVC film gum hot melt plastic uptake technique |
| CN109228263A (en) * | 2018-08-13 | 2019-01-18 | 常熟安通林汽车饰件有限公司 | A kind of vacuum suction technique based on PP substrate |
| CN110395041A (en) * | 2019-08-31 | 2019-11-01 | 成都市麦古装饰材料有限公司 | PVC high-molecular decorative film gum plastic uptake technique |
| CN114661018A (en) * | 2022-05-25 | 2022-06-24 | 江苏张氏航空精塑有限公司 | Plastic uptake processing distributed control method and system |
| CN116512725A (en) * | 2023-04-14 | 2023-08-01 | 索菲亚家居股份有限公司 | Visual door plate with plastic absorption capacity and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20020046811A1 (en) * | 2000-10-20 | 2002-04-25 | Bhs Corrugated Maschinen -Und Anlagenbau Gmbh | Method of adjusting the height of a nip of an adhesive applicator apparatus for a web of corrugated board and apparatus for putting the method into practice |
| CN202316227U (en) * | 2011-11-30 | 2012-07-11 | 杭州鑫福聚脂包装材料有限公司 | Oiling device for PET sheet |
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2013
- 2013-07-15 CN CN2013103041545A patent/CN103386755A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020046811A1 (en) * | 2000-10-20 | 2002-04-25 | Bhs Corrugated Maschinen -Und Anlagenbau Gmbh | Method of adjusting the height of a nip of an adhesive applicator apparatus for a web of corrugated board and apparatus for putting the method into practice |
| CN202316227U (en) * | 2011-11-30 | 2012-07-11 | 杭州鑫福聚脂包装材料有限公司 | Oiling device for PET sheet |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108749268A (en) * | 2018-06-12 | 2018-11-06 | 惠州市优品新材料有限公司 | A kind of PVC film gum hot melt plastic uptake technique |
| CN109228263A (en) * | 2018-08-13 | 2019-01-18 | 常熟安通林汽车饰件有限公司 | A kind of vacuum suction technique based on PP substrate |
| CN110395041A (en) * | 2019-08-31 | 2019-11-01 | 成都市麦古装饰材料有限公司 | PVC high-molecular decorative film gum plastic uptake technique |
| CN114661018A (en) * | 2022-05-25 | 2022-06-24 | 江苏张氏航空精塑有限公司 | Plastic uptake processing distributed control method and system |
| CN116512725A (en) * | 2023-04-14 | 2023-08-01 | 索菲亚家居股份有限公司 | Visual door plate with plastic absorption capacity and preparation method thereof |
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Application publication date: 20131113 |