CN208020972U - It is the UV rollers for coating embrane method processing for double stretching polylactic acid film - Google Patents
It is the UV rollers for coating embrane method processing for double stretching polylactic acid film Download PDFInfo
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- CN208020972U CN208020972U CN201820413987.3U CN201820413987U CN208020972U CN 208020972 U CN208020972 U CN 208020972U CN 201820413987 U CN201820413987 U CN 201820413987U CN 208020972 U CN208020972 U CN 208020972U
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- polylactic acid
- film
- acid film
- rollers
- embrane method
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Abstract
It is the UV rollers for coating embrane method processing that the utility model discloses a kind of for double stretching polylactic acid film.Polylactic acid film is coated with upper environmental protection UV Photocurable adhesives by the utility model by the way of online i.e. painting, by the photocuring pressure roller with LED-UV light sources, is achieving the purpose that press overlay film is completed at the same time with adhesive curing.Polylactic acid film and UV light curing agents are all green products, and UV light curing agents do not need heat source in the curing process, also do not generate VOC emission, and entire coating process is also environmentally protective.This degradable poly lactic acid, that is, coated film will be applied to printed matter overlay film field, can replace common BOPP film on the market to a certain extent.Since polylactic acid is the polymer obtained for main polymerizable raw material with lactic acid, raw material sources are abundant and can regenerate, itself can be biodegradable, will not cause environmental pollution, can break away from dependence of the general thin to petroleum resources.
Description
Technical field
The utility model is related to chemical material processing equipment field, more particularly to one kind are thin for double stretching polylactic acid
Film is the UV rollers for coating embrane method processing.
Background technology
Paper printing package overlay film belongs to one kind of print rear surface ornamenting processing technology, refers in paper printed matter and packet
The laminating layer of plastic film of dress product surface laminating machine and formed a kind of paper unification product processing technology.After overlay film
Printed matter, since one layer of thin, transparent plastic film more than surface is figure so as to improve the glossiness and fastness of printed matter
Literary color is more bright-coloured, rich in three-dimensional sense, while play waterproof, antifouling, wear-resisting, resistance to folding, it is resistant to chemical etching the effects that.
By gluing model split, has currently on the market and apply and precoat two kinds of coating techniques, that is, coating membrane process refers to
Technique compound with printed matter after first gluing on a plastic film, beforehand gelatinizing technique refers to that plastic film is glued rewinding in advance
It is compound with printed matter again afterwards.
For the consideration of environmental protection, precoating membrane process is increasingly becoming the mainstream in market.But either it is that film still precoats
Film, the typically bidirectional oriented polypropylene of base material (BOPP) film of plastic film, biaxial stretching polyester (BOPET) film etc. are thin
Film.BOPP film has the characteristics that transparency is high, glossiness is good, non-toxic and tasteless, water-fast, heat-resisting, inexpensive, soft texture, is to cover
Comparatively ideal material in membrane process, thickness are therefore (12-20) micron angularly considers from material cost and processing technology,
The overwhelming majority applies and precoating film base material is all made of BOPP film.
However, this kind of material preparation at coated products be difficult to degrade using complete be discarded into the Nature, result in serious
Problem of environmental pollution.Moreover, the paper products after overlay film only can be just used again after the technique of paper separation.It is adjoint
The raising of the worsening shortages and people of petroleum resources to the highest attention of environmental problem and quality of life requirement, exploitation has had
Full biodegradable coated products have become the hot spot of domestic and international printing packaging area research now.
Polylactic acid (PLA) is to belong to a kind of biodegradable environmental-friendly high molecular material in aliphatic polyester,
Raw material monomer lactic acid can on a large scale be produced by the cereal crops such as fermented maize and all kinds of agricultural and sideline products, thus can be put completely
The dependences of the general thins to petroleum resources such as de- polyester, polypropylene；PLA material has excellent biodegradable, in nature
In environment, under the action ofs bacterium, water etc., degradable energy is carbon dioxide and water, and environmental sound can thoroughly solve to gather
The problems such as " white pollution " that the plastic products such as ester, polypropylene are brought.
However, the glass transition temperature of polylactic acid only has 60 DEG C or so.Either it is that painting still precoats use with adhesive
For the combined temp of adhesive all at 100 DEG C or more, this just affects application of the polylactic acid film in overlay film field.
Currently, the bidirectional stretching polypropylene film (BOPP) that the base material of covering material in the market all uses, biaxial tension
Polyester film (BOPET) and biaxial tension polyurethane (BOPA) film.After overlay film, it is difficult to paper separation and recovery is carried out, and BOPP,
BOPET and BOPA can not natural degradation, be easy to cause environmental pollution.Moreover, i.e. the binder of coated film can be made in drying course
At VOC emission, environment is polluted.
Therefore, the prior art is defective, needs to improve.
Utility model content
Technical problem to be solved in the utility model is：It provides a kind of using the i.e. degradable double stretching of coating embrane method production
The UV rollers used in the process equipment of polylactic acid film.
The technical solution of the utility model is as follows：A kind of UV coating embrane method processing for double stretching polylactic acid film
Roller includes the UV roller main bodies of hollow cylinder structure；LED-UV light sources are installed in the UV roller main bodies internal diameter；The UV rollers
Several through-holes are furnished on side wall.
Applied to each above-mentioned technical proposal, described is the UV rollers for coating embrane method processing for double stretching polylactic acid film
In, the length H of the UV roller main bodies is 100-400cm, and outer diameter D 1 is 10-20cm, and internal diameter D2 is 9-19cm.
Applied to each above-mentioned technical proposal, described is the UV rollers for coating embrane method processing for double stretching polylactic acid film
In, the UV roller main bodies are made of the all-transparent material of PMMA or PC.
Applied to each above-mentioned technical proposal, described is the UV rollers for coating embrane method processing for double stretching polylactic acid film
In, round through-hole is covered on the side wall of the UV roller main bodies, the diameter d of each circular through hole between 0.1-0.5cm, also,
The distance between the center of circle of adjacent circular through-hole h is more than 2d.
Applied to each above-mentioned technical proposal, described is the UV rollers for coating embrane method processing for double stretching polylactic acid film
In, the wave-length coverage for the LED-UV light sources installed in the UV roller main bodies internal diameter is between 180-450nm, bandwidth 10-40nm, work(
Rate 4-12W.
Applied to each above-mentioned technical proposal, described is the UV rollers for coating embrane method processing for double stretching polylactic acid film
In, further include setting at UV roller main bodies both ends and for LED-UV light source heat radiations to be cooled to 50 DEG C of radiators below.
Applied to each above-mentioned technical proposal, described is the UV rollers for coating embrane method processing for double stretching polylactic acid film
In, the radiator is fan or intermediate water cooling plant.
Using the above scheme, polylactic acid film is coated with upper environmental protection UV light by the way of online i.e. painting and consolidated by the utility model
Change adhesive, by the photocuring pressure roller with LED-UV light sources, reaches what pressing overlay film was completed at the same time with adhesive curing
Purpose.Its main feature is that polylactic acid film and UV light curing agents are all green products, UV light curing agents are in the curing process not
Heat source is needed, VOC emission is not also generated, entire coating process is also environmentally protective.This degradable poly lactic acid, that is, coated film
It will be applied to printed matter overlay film field, common BOPP film on the market can be replaced to a certain extent.Also, since polylactic acid is
It is the polymer that main polymerizable raw material obtains with lactic acid, raw material sources are abundant and can regenerate, itself can be biodegradable,
Environmental pollution will not be caused, therefore dependence of the general thin to petroleum resources can be broken away from.In the present invention, it is used for paper
Laminating binder uses environmentally protective UV glue, and only existing equipment simply need to be transformed, only under the irradiation of UV light sources i.e.
It can carry out that paper is laminating, not need additional heat source and drying equipment.Since UV glue is fully cured under the irradiation of UV light sources, because
This entire laminating process does not have VOC emission, will not cause environmental pollution.
Description of the drawings
Fig. 1 is prior art equipment drawing；
Fig. 2 is the process equipment figure that the utility model is improved in prior art equipment；
Fig. 3 is the process equipment figure that the utility model redesigns；
Fig. 4 is the structural schematic diagram of UV rollers in the utility model；
Fig. 5 is the schematic cross-section of UV rollers in the utility model.
Specific implementation mode
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
Present embodiments provide processing technology and the processing technology that a kind of double stretching polylactic acid film coats embrane method
Used process equipment.
Fig. 1 is the processing technology that industrial BOPP film coats embrane method at present.After BOPP original films are by unwinding device, lead to
It crosses rolling method and coats crylic acid resin binder, after the drying of (60-90) DEG C dry channel, by hot-pressing roller and waiting for overlay film
Printing condition it is laminating, wherein the temperature of hot-pressing roller be (70-110) DEG C, the pressure of two rollers is between (5-20) bar, finally
By the printed matter winding after overlay film.
Fig. 2 be the utility model is related to double stretching polylactic acid film coat the processing technology of embrane method.It first, will be transparent
Double stretching polylactic acid film prepared by extrusion grade polylactic acid master batch is by being coated with cold pressing roller, and using roller coating rubbing method, upper coating is cold
The diameter of pressure roller and lower coating two roller of cold pressing roller is respectively 20-40cm, coating material be polyurethane acroleic acid fat (PUA) class and
(or) UV of polyester acrylate (PEA) class cures binder.
After coating, using UV photocurings be cold-pressed it is laminating, be coated with UV solidification binder double stretching polylactic acid film with
Printed matter is laminating together, is that the dry channel on coating film machine is not necessarily to due to using UV photocurings rather than heat cure, original
Heating and ventilation, and with the laminating hot-pressing roller of printed matter without heating.
In UV photocurings, the laminating cold pressing roller of lower section is metal cylinder solid construction, length 100-400cm, outside
Diameter is 10-20cm.It uniquely needs to be that the hot-pressing roller of laminating place upper end is wanted to the former i.e. improved place of coating film machine in the design
It is changed to UV rollers.
The structure of UV rollers is as shown in Figure 4 and Figure 5, and UV rollers are hollow cylinder structure, is the all-transparent material of PMMA or PC,
Length H is 100-400cm, and outer diameter D 1 is 10-20cm, and internal diameter D2 is 9-19cm, is covered on the side wall of hollow cylinder round
Through-hole, for through-hole diameter d between 0.1-0.5cm, the distance between circular through hole center of circle h is more than 2d.
LED-UV light sources are installed, wave-length coverage is between 180-450nm, bandwidth 10-40nm, power 4- in UV roller internal diameters
12W, UV roller are equipped with both ends fan or intermediate water cooling plant, can be that LED-UV light source heat radiations are cooled to 50 DEG C or less.
UV roll temperatures are less than the glass transition temperature of polylactic acid, therefore polylactic acid film changes in this recurring structure.
Its irradiation energy of LED-UV light sources is by circular hole between internal-and external diameter and polylactic acid film, to cause the solidification of UV binders,
It is acted on by the pressing of UV rollers and lower section cold pressing roller 5-20bar so that polylactic acid film can be firm laminating with printed matter
Together, finally the printed matter after overlay film is wound.
The maximum feature of its processing technology is：1. the hot-pressing roller of laminating place upper end only will be changed to UV rollers, to existing factory
I.e. coating film device change it is minimum.2. entire coating process is not being needed to pressure roller heating, dry channel is without heating and leads to
Wind, it is only necessary to be powered to UV light sources, reduce energy consumption.3. giving UV light source heat radiations by air-cooled or water cooling plant.4.UV
Light curing agent does not need heat source in the curing process, does not generate VOC emission yet, and entire coating process is also environmentally protective.
Fig. 3 process equipments are reset to Fig. 2 process equipments, and the dry channel of Fig. 2 is removed, and reduce deflector roll quantity,
After double stretching polylactic acid film roller coating UV glue, directly by being wound after the pressing of UV rollers and laminating cold pressing roller.It is designed more
Simple fine, floor space smaller is conveniently operated.
It is 3 specific embodiments below
Example 1：
Using the equipment in Fig. 2, double stretching polylactic acid film (light film) prepared by clear crystals type polylactic acid master batch is logical
Coating cold pressing roller is crossed, using roller coating rubbing method, a diameter of 30cm of two rollers, coating material is polyurethane acrylic resin
(PUA) the UV binders of class.After the polylactic acid film of UV glue is coated with by deflector roll, by being the dry channel on coating film machine,
But dry channel is without heating and ventilation.After by second deflector roll, polylactic acid film and the printed matter for being coated with UV glue are straight
It is laminating to connect cold pressing roller.The cold pressing roller length of lower section is 100cm, outer diameter 20cm herein.UV cold pressing rollers are hollow cylinder
Structure, material are the all-transparent material of PMMA, length 100cm, outer diameter 20cm, internal diameter 19cm, hollow cylinder
Side wall be covered with the round through-hole of a diameter of 0.2cm, the distance between circular through hole center of circle is more than 0.2cm.Pacify in UV roller internal diameters
LED-UV light sources are filled, wavelength 405nm, bandwidth 10nm set water-cooling cooling device in power 8W, UV roller, can be LED-UV light
Source is cooled to 45 DEG C.Its irradiation energy of LED-UV light sources is by circular hole between internal-and external diameter and polylactic acid film, to cause UV
The solidification of binder acts on so that polylactic acid film can with printed matter by the pressing of UV rollers and lower section cold pressing roller 5bar
It is firm it is laminating together, finally the printed matter after overlay film is wound.
Example 2：
Using the equipment in Fig. 2, double stretching polylactic acid film (mute film) prepared by transparent extrusion grade polylactic acid master batch is logical
Coating cold pressing roller is crossed, using roller coating rubbing method, a diameter of 40cm of two rollers, coating material is polyester acrylate (PEA) class
UV binders.After the polylactic acid film of UV glue is coated with by deflector roll, by being the dry channel on coating film machine, but it is dry
Channel is without heating and ventilation.After by second deflector roll, the polylactic acid film and printed matter composite straight that are coated with UV glue are connected
It is laminating to cross cold pressing roller.The cold pressing roller length of lower section is 400cm, outer diameter 16cm herein.UV cold pressing rollers are hollow cylinder structure,
Its material is the all-transparent material of PMMA, length 400cm, outer diameter 16cm, internal diameter 15cm, the side wall of hollow cylinder
On be covered with the round through-holes of a diameter of 0.5cm, the distance between circular through hole center of circle is more than 0.5cm.Due to mute film translucency not
Such as light film, therefore LED-UV light sources, wavelength 365nm, bandwidth 10nm, power 16W, UV roller both ends are installed in UV roller internal diameters
Be equipped with it is fan cooling apparatus used, can be LED-UV light source heat radiations be cooled to 50 DEG C.Its irradiation energy of LED-UV light sources passes through inside and outside
Circular hole and polylactic acid film between diameter, to cause the solidification of UV binders, in the pressure by UV rollers and lower section cold pressing roller 6bar
Cooperation is used so that polylactic acid film and printed matter can it is firm it is laminating together, finally the printed matter after overlay film is wound.
Example 3：
Using the equipment of Fig. 3, double stretching polylactic acid film (light film) prepared by transparent extrusion grade polylactic acid master batch is passed through
It is coated with cold pressing roller, using roller coating rubbing method, a diameter of 25cm of two rollers, coating material is polyurethane acroleic acid fat (PUA) class
With polyester acrylate (PEA) class according to mass ratio 2:1 mixing UV binders.The polylactic acid film for being coated with UV glue directly passes through
Cold pressing roller is laminating.The cold pressing roller length of lower section is 300cm, outer diameter 10cm herein.UV cold pressing rollers are hollow cylinder structure,
Material is the all-transparent material of PC, length 300cm, outer diameter 10cm, internal diameter 9cm, cloth on the side wall of hollow cylinder
The round through-hole of full a diameter of 0.3cm, the distance between circular through hole center of circle are more than 0.3cm.LED- is installed in UV roller internal diameters
UV light sources, wavelength 385nm, bandwidth 8nm, the outfit of power 12W, UV roller both ends is fan cooling apparatus used, can be LED-UV light sources
Radiating and cooling is to 48 DEG C.Its irradiation energy of LED-UV light sources is by circular hole between internal-and external diameter and polylactic acid film, to cause
The solidification of UV binders is acted on by the pressing of UV rollers and lower section cold pressing roller 8bar so that polylactic acid film and printed matter energy
It is enough firm it is laminating together, finally the printed matter after overlay film is wound.
The above is only the preferred embodiments of the present utility model only, is not intended to limit the utility model, all in this practicality
All any modification, equivalent and improvement etc., should be included in the guarantor of the utility model made by within novel spirit and principle
Within the scope of shield.
Claims (7)
1. a kind of UV rollers coating embrane method processing for double stretching polylactic acid film, which is characterized in that including hollow cylinder
The UV roller main bodies of structure；
LED-UV light sources are installed in the UV roller main bodies internal diameter；It is furnished with several through-holes on the side wall of the UV rollers.
2. the UV rollers according to claim 1 for coating embrane method processing for double stretching polylactic acid film, it is characterised in that：
The length H of the UV roller main bodies is 100-400cm, and outer diameter D 1 is 10-20cm, and internal diameter D2 is 9-19cm.
3. the UV rollers according to claim 1 for coating embrane method processing for double stretching polylactic acid film, it is characterised in that：
The UV roller main bodies are made of the all-transparent material of PMMA or PC.
4. the UV rollers according to claim 1 for coating embrane method processing for double stretching polylactic acid film, it is characterised in that：
It is covered with round through-hole on the side wall of the UV roller main bodies, the diameter d of each circular through hole is also, adjacent between 0.1-0.5cm
The distance between center of circle of circular through hole h is more than 2d.
5. the UV rollers according to claim 1 for coating embrane method processing for double stretching polylactic acid film, it is characterised in that：
The wave-length coverage for the LED-UV light sources installed in the UV roller main bodies internal diameter is between 180-450nm, bandwidth 10-40nm, power
4-12W。
6. the UV rollers according to claim 1 for coating embrane method processing for double stretching polylactic acid film, it is characterised in that：
Further include setting at UV roller main bodies both ends and for LED-UV light source heat radiations to be cooled to 50 DEG C of radiators below.
7. the UV rollers according to claim 6 for coating embrane method processing for double stretching polylactic acid film, it is characterised in that：
The radiator is fan or intermediate water cooling plant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820413987.3U CN208020972U (en) | 2018-03-27 | 2018-03-27 | It is the UV rollers for coating embrane method processing for double stretching polylactic acid film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820413987.3U CN208020972U (en) | 2018-03-27 | 2018-03-27 | It is the UV rollers for coating embrane method processing for double stretching polylactic acid film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208020972U true CN208020972U (en) | 2018-10-30 |
Family
ID=63907376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820413987.3U Expired - Fee Related CN208020972U (en) | 2018-03-27 | 2018-03-27 | It is the UV rollers for coating embrane method processing for double stretching polylactic acid film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208020972U (en) |
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2018
- 2018-03-27 CN CN201820413987.3U patent/CN208020972U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181030 |
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| CF01 | Termination of patent right due to non-payment of annual fee |