CN100467711C - Preparation method of nonwoven fabrics composite film - Google Patents
Preparation method of nonwoven fabrics composite film Download PDFInfo
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- CN100467711C CN100467711C CNB2007100666737A CN200710066673A CN100467711C CN 100467711 C CN100467711 C CN 100467711C CN B2007100666737 A CNB2007100666737 A CN B2007100666737A CN 200710066673 A CN200710066673 A CN 200710066673A CN 100467711 C CN100467711 C CN 100467711C
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Abstract
The process of preparing composite film on non-woven fabric includes the steps of: unwinding, spreading glue, drying, compounding, and cooling and winding. The process has non-woven fabric of synthetic resin and thermoplastic synthetic resin film with softening temperature and smelting temperature lower than that of the non-woven fabric as basic material. The preheated and softened film is combined with the non-woven fabric integrally through the intervals between fibers. The present invention has firm combination between the film and the non-woven fabric, and the non-woven fabric with film has excellent heat resistance and high strength.
Description
Technical field
The present invention relates to a kind of preparation method of nonwoven fabrics composite film, is about with adhesion heat nonwoven fabric without damage being carried out the comprehensively bonding preparation method who makes the nonwoven fabrics composite film that bonding force and weight between nonwoven fabric and the film improve specific strength specifically.
Background technology
Nonwoven fabric is not have weaving process, finish into fiber assembly by method fibers such as machinery, chemistry or heat treatments, so fiber aggregation degree can have various characteristic, have the gas permeability lighter and outstanding, be widely used in clothes class, Filters, carpet, soft rag, wet tissue etc. than general fiber.Disposable medical operation dress, disposable diaper are wet etc. to have than better flexibility of existing product and gas permeability and adopt nonwoven fabric to be composited with film.Existing non-woven fabric compounded membrane preparation method mainly contains following two kinds: the one, at synthetic resin film surface spraying glue and add nonwoven fabric and use the pressure roller pressurized adhesion later on, complex method although it is so has makes bonding firm advantage between nonwoven fabric and the synthetic resin, but along with the glue sclerosis that absorbs in the nonwoven fabric, nonwoven fabric is hardened, add that the glue that does not absorb and remain in nonwoven surface adds deep-hardening, makes the characteristic variation of film aspect flexibility; The 2nd, heat is being melted, this method is not because of using glue, make and have the flexibility advantage that can keep film, but the nonwoven fabric that generally is used in composite membrane is the synthetic resin of PP (PolyPropylene) or PS materials such as (PolyStyrene) to be constituted, this makes the melting point of synthetic resin lower, the nonwoven fabric construct characteristic that adds thin fiber condition formation complex makes heat resistance low, because this characteristic, if directly heating on nonwoven fabric, pressurization occurs pressing the problem of damaging of piling with the fibr tissue that nonwoven fabric appears in the bonding meeting of film because of heat fusing, this also makes nonwoven fabric and the film can not be bonding comprehensively, therefore, nonwoven fabrics composite film is the segment bounds bonding manufacturing that can only rely on the picture point bonding mode, composite membrane is easily separated, durability is low, be used in non-durability packaging material or outsourcing usefulness so these composites are only limited to, limited the application of composite membrane.
Summary of the invention
In order to solve foregoing problems, the object of the present invention is to provide a kind of preparation method of nonwoven fabrics composite film, the nonwoven fabrics composite film of making according to this method has soft quality, and has the advantage of air permeability and good and bonding strength.
For reaching above-mentioned purpose, the present invention adopts following technical scheme: a kind of preparation method of nonwoven fabrics composite film, comprise volume successively, gluing, dry, compound, these 5 steps of cooling rolling, adopt nonwoven fabric that synthetic resin fiber constitutes and be base material than nonwoven fabric softening temperature and the low thermoplastic synthetic resin film of melt temperature, the film of pre-thermal softening and nonwoven fabric are melting by fibre gap heat and are integrated, make nonwoven fabric and membrane-bound method, wherein resin molding is a polythylene resin, adopt low density polyethylene (LDPE), a kind of in the high density polyethylene (HDPE), coating technique is by rubber roll pressurization gluing, glue is filled with among the site of gravure roll, glue in this site contacts with the substrate surface that is gummed by a resilient rubber roller again, and a part of glue in the site is transferred on the substrate surface.
The baking temperature of described drying process is 50-80 ℃.
The temperature of compound steel roller faces is 40-80 ℃ in the described combination process.
The temperature of compound steel roller faces is 55 ℃ in the described combination process.
1, goes up volume
After the start,,,, make it to be heated evenly by boiler circulatory system each steel rider with Circulation and Hot Oil Spray by opening the oil temperature of thermo oil boiler heating the inside at first to compound steel rider heating.Select to settle two kinds of base materials then, promptly the nonwoven fabric that constitutes of synthetic resin fiber is first base material and is second base material than nonwoven fabric softening temperature and the low thermoplastic synthetic resin film of melt temperature.Start the machine, second base material is flattened, along circuit to upper glue roller by setting a tension force.
2, gluing
By rubber roll pressurization gluing, glue spreader be one netted, it is to decide the netting twine density and the degree of depth by glue-spread.The principle of gravure roll gluing is identical with intaglio printing, glue is filled with among the site of gravure roll, after the glue liquid level is left in this site, the glue at its surface smoothing place is scraped off by scraper, only keeping and scraping the glue that does not go in the intaglio plate site, glue in this site contacts with the substrate surface that is gummed again, and this contact is that the help by a resilient rubber roller realizes.Through such contact, a part of glue in the site is transferred on the substrate surface, has so just finished whole gluing process.Glue in the site is partly transferred to after basement membrane gets on, because the glue flowability, its can sprawl levelling at leisure automatically, makes discontinuously originally, and the glue point of a little becomes continuous, uniformly the glue layer.And the glue in the site, goes in the glue but can be immersed in again again when this site is rotating a circle so reduced manyly because a part has shifted away, and glue can be full of again, fills it.Go round and begin again like this, the little gravure roll of diameter just can constantly be transferred to substrate surface continuously with adhesive and get on, and realizes the purpose of gluing.For done gravure roll, because its site degree of depth is fixing, the shape of site can not change, so what of spread are determined by the content of glue that basically glue content is big more, spread is just many more, and vice versa.Film is by this rubber roll, press through pressure roller one, glue on the glue spreader is just transferred to above the film, because grid is a little, just become a plane on the film so transfer to, film is wide more, glue spreader is long more, the gluing pressure roller is long more, and the glue that it shifts is also many more, and this has just successfully realized from the compound process of the face that is compound to of point.
3, drying
Drying is compound important method, and it is to the transparency of compound, the residual solvent amount, and bonding intensity, smell, sanitation performance all have direct influence.Drying behind the gluing is to carry out in the drying tunnel of set composite.It blows to the base material that scribbles the adhesive face to hot blast on the one hand, and glue is heated, and with the solvent evaporation, becomes steam; Exhausting again is discharged to the drying tunnel outside to the air that contains a large amount of solvent vapo(u)rs on the other hand.The setting of drying tunnel temperature should be according to the heat resistance of base material, the linear velocity of compound tense basement membrane, and employed solvent species etc. are taken all factors into consideration, and the scope of baking temperature is 50-80 ℃.
4, compound
With the another kind of not base material of gluing, through the set composite heating, pressurizing attaching gets up with dried first base material of gluing, has just finished recombination process basically.The temperature of compound steel roller faces is 40-80 ℃, and the temperature of compound steel roller faces is to the fastness of compound, and outward appearance has a direct impact.
5, cooling rolling
First base material and second base material compound good after, peel away from compound steel rider, come out through baking oven, through some chill rolls composite membrane is cooled off, rolling is got up again.The effect of cooling has two.One is to allow the composite membrane cooling and shaping, smooth during rolling, does not send out wrinkle.Because when just coming out in drying tunnel, the temperature of composite membrane is often very high, and the poor rigidity of composite membrane is felt like jelly, if do not cool off with regard to rolling, may be wrinkling, sudden and violent muscle is arranged, can cause " impression ", and the good rigidly of cooled composite membrane a bit, and very a bit, rolling does not crease easily.Another effect is to allow the gluing cooling, produces bigger cohesive force, does not allow two kinds of base materials produce relative displacement, avoids wrinkling or " tunnel " phenomenon.Because will allow adhesive produce " activity " originally, having stickiness could improve the clad steel roll surface temperature, in case after clinging, do not produce relative displacement, could guarantee that like this compound is wrinkle resistant, not have in " tunnel ", be a kind of method that increases adhesive cohesive force and reduce temperature.
The invention has the beneficial effects as follows: the present invention utilizes space between the fiber that constitutes nonwoven fabric, and film and nonwoven fabric are melting the stage, and film need provide the preparation method who makes nonwoven fabrics composite film with the softening temperature of nonwoven fabric and the low material of melt temperature.The present invention is that the film on nonwoven fabric both sides is melting and incorporate by fibre gap heat, makes nonwoven fabric firm with combining of film, and durability is outstanding, can provide weight the nonwoven fabrics composite film high to specific strength.And nonwoven fabric of the present invention and film be when bonding, and only directly heating on film makes film softening by preheating, thereby reduces the adhesion heat that is communicated to nonwoven fabric.
The specific embodiment
Embodiment 1
After the preparation method of nonwoven fabrics composite film of the present invention is start, at first to compound steel rider heating.By opening the oil temperature of thermo oil boiler heating the inside,, make it to be heated evenly by boiler circulatory system each steel rider with Circulation and Hot Oil Spray.Select then to settle two kinds of base materials, start the machine, by setting a tension force second base material is flattened, along circuit to upper glue roller.
By rubber roll pressurization gluing, glue spreader be one netted, it is to decide the netting twine density and the degree of depth by glue-spread.The principle of gravure roll gluing is identical with intaglio printing, glue is filled with among the site of gravure roll, after the glue liquid level is left in this site, the glue at its surface smoothing place is scraped off by scraper, only keeping and scraping the glue that does not go in the intaglio plate site, glue in this site contacts with the substrate surface that is gummed again, and this contact is that the help by a resilient rubber roller realizes.Through such contact, a part of glue in the site is transferred on the substrate surface, has so just finished whole gluing process.Glue in the site is partly transferred to after basement membrane gets on, because the glue flowability, its can sprawl levelling at leisure automatically, makes discontinuously originally, and the glue point of a little becomes continuous, uniformly the glue layer.And the glue in the site, goes in the glue but can be immersed in again again when this site is rotating a circle so reduced manyly because a part has shifted away, and glue can be full of again, fills it.Go round and begin again like this, the little gravure roll of diameter just can constantly be transferred to substrate surface continuously with adhesive and get on, and realizes the purpose of gluing.
Drying behind the gluing is to carry out in the drying tunnel of dry method set composite.Drying tunnel temperature is 50 ℃, and it blows to the base material that scribbles the adhesive face to hot blast on the one hand, and glue is heated, and with the solvent evaporation, becomes steam; Exhausting again is discharged to the drying tunnel outside to the air that contains a large amount of solvent vapo(u)rs on the other hand.Temperature is 60 ℃ when dry.
Also adosculation is by different preheater preheatings in two films transmission then, and heating-up temperature is 70 ℃.Preheating and two softening films are supplied with a pair of roller that melting that has heater, also supply with nonwoven fabric between the two membranes simultaneously.The two membranes of supplying with under the state that the nonwoven face inserts through melting the roller heating, pressurizeing to make two side forms infiltration non-woven fabrics fiber space and carry out heat and melting, is finished complex method, finishes the preparation method by the cooling rolling.In the method because of film by the pre-thermal softening of preheater, so need not add too many temperature to film melting roller, also may strengthen the caloric value of melting the roller upper heater in order to improve speed of production, but, make the damage that prevents nonwoven fabric because of obviously reducing the heat that is communicated on the nonwoven fabric by film.
Here, preheater and the moulding pressure that is melting the heating-up temperature of roller and melting roller are that wherein importantly the film heating also will prevent from when melting not damage nonwoven fabric by the heat that film is passed on according to the material of film and nonwoven fabric and thickness, the decision of handover speed.For example when film be to constitute by LDPE, under the situation that nonwoven fabric is made of PP, the temperature of preheater heating the chances are 90-100 ℃, the heating-up temperature of melting roller is a 100-120 ℃ of scope.And for example when film be that preheat temperature is 95-105 ℃ when being made of LLDPE, melting temperature is 105-130 ℃ of scope.
First base material and second base material compound good after, peel away from compound steel rider, come out through baking oven, this moment, the baking temperature of baking oven was 65 ℃, through some chill rolls composite membrane was cooled off, rolling is got up again, makes the nonwoven fabrics composite film finished product.
Embodiment 2
The another kind of manufacture method of nonwoven fabrics composite film.Be that step according to embodiment 1 goes up volume, gluing, after the drying, two films are supplied with the preheat roll that a knot respectively is equipped with preheater, film is transferred and heating around preheat roll is peripheral in the supply process, supply with nonwoven fabric between the Ruan Hua two membranes, and it is bonding to be carried out vacation by a pair of preheat roll, false bonding film passes through a pair of roller (100) that melting again as above-mentioned melting of saying.Thereby carried out complex method, and then carried out rolling as the method for embodiment 1.Such method is the preheating of contact preheat roll because of film, thus there is preheating accurate than aforesaid example, advantage of uniform.
Composite membrane of the present invention is made up of thermoplastic synthetic resin, and the compound nonwoven fabric that is made of synthetic resin between two films, the film on both sides are to penetrate into fibr tissue and form melting mutually by the space between the fiber by heat bonding to constitute.Here nonwoven fabric is used PP, PS material usually, and film is to use softening temperature and the low material of melt temperature than nonwoven fabric to constitute.These can prevent from when causing two films melting mutually to damage nonwoven fabric because of adhesion heat.
Nonwoven fabrics composite film according to the present invention's formation, bonding force height, superior durability between film and the nonwoven fabric, nonwoven fabric and film are again incorporate composite constructions, thereby compared with former packaging film weight, desired strength characteristics such as TENSILE STRENGTH, impact strength is improved, can also also can make desirable intensity with relatively thinner film, so also have the advantage that can reduce Master Cost required in the packaging film manufacturing.
Also have on the one hand,, can select two films, one cloth, also can select two cloth, one film etc. according to the kind of packaged product.Also can select the film of different material, make the two sides of film can have different rerum naturas.The outside of each film can bonding other film, can also make the packaging film with appropriate characteristics according to purposes.
Claims (4)
1, a kind of preparation method of nonwoven fabrics composite film, comprise volume, gluing, drying, compound, these 5 steps of cooling rolling successively, it is characterized in that: adopt nonwoven fabric that synthetic resin fiber constitutes and be base material than nonwoven fabric softening temperature and the low thermoplastic synthetic resin film of melt temperature, the film of pre-thermal softening and nonwoven fabric are melting by fibre gap heat and are integrated, make nonwoven fabric and membrane-bound method; Wherein resin molding is a polythylene resin, adopt a kind of in low density polyethylene (LDPE), the high density polyethylene (HDPE), coating technique is by rubber roll pressurization gluing, glue is filled with among the site of gravure roll, glue in this site contacts with the substrate surface that is gummed by a resilient rubber roller again, and a part of glue in the site is transferred on the substrate surface.
2, the preparation method of a kind of nonwoven fabrics composite film as claimed in claim 1 is characterized in that: baking temperature is 50-80 ℃ in the described drying process.
3, the preparation method of a kind of nonwoven fabrics composite film as claimed in claim 1 is characterized in that: the temperature of compound steel roller faces is 40-80 ℃ in the described combination process.
4, the preparation method of a kind of nonwoven fabrics composite film as claimed in claim 3 is characterized in that: the temperature of compound steel roller faces is 55 ℃ in the described combination process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100666737A CN100467711C (en) | 2007-01-11 | 2007-01-11 | Preparation method of nonwoven fabrics composite film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100666737A CN100467711C (en) | 2007-01-11 | 2007-01-11 | Preparation method of nonwoven fabrics composite film |
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| Publication Number | Publication Date |
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| CN100999870A CN100999870A (en) | 2007-07-18 |
| CN100467711C true CN100467711C (en) | 2009-03-11 |
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| CNB2007100666737A Expired - Fee Related CN100467711C (en) | 2007-01-11 | 2007-01-11 | Preparation method of nonwoven fabrics composite film |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121198A (en) * | 2011-02-25 | 2011-07-13 | 科思达（厦门）卫生制品有限公司 | Method for preparing non-woven fabric spray-planting film |
| CN103192567B (en) * | 2012-01-09 | 2016-05-11 | 佛山金万达科技股份有限公司 | Thermoplastic resin film layer compound and preparation method thereof |
| CN104401097B (en) * | 2014-10-31 | 2017-02-15 | 重庆和泰塑胶股份有限公司 | Method using water-soluble glue for making composite film |
| CN106218181A (en) * | 2016-07-22 | 2016-12-14 | 海安启弘纺织科技有限公司 | A kind of low-temperature production process without glue laminating fabric |
| CN109334202B (en) * | 2018-11-05 | 2024-02-06 | 江苏坤泰机械有限公司 | Large-width wall reinforcing material hot melting compounding machine |
| EP3908463A1 (en) * | 2019-01-11 | 2021-11-17 | Henkel AG & Co. KGaA | Method and device for adhesively bonding substrates in film form, and composite body obtained thereby |
-
2007
- 2007-01-11 CN CNB2007100666737A patent/CN100467711C/en not_active Expired - Fee Related
Non-Patent Citations (2)
| Title |
|---|
| 聚乙烯/丙纶复合防水卷材复合工艺. 张文龙等.哈尔滨理工大学学报，第6卷第4期. 2001 |
| 聚乙烯/丙纶复合防水卷材复合工艺. 张文龙等.哈尔滨理工大学学报，第6卷第4期. 2001 * |
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| CN100999870A (en) | 2007-07-18 |
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