CN105799352B - A kind of fabrication PHA laser printing materials and preparation method thereof - Google Patents
A kind of fabrication PHA laser printing materials and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a kind of fabrication PHA laser printing materials and preparation method thereof, are made of PHA base materials and the laser printing bearing bed coated in the substrate surface, and the component of laser printing bearing bed and the mass fraction of each component are as follows：Water base PU resin emulsions 28.00 ~ 35.00；Water base PA resin emulsions 53.00 ~ 76.00；Carboxylic styrene butadiene latex 8.00 ~ 15.00；Antiblocking agent 0.25 ~ 0.80；Antistatic agent 0.15 ~ 1.50；Wetting agent 0.25 ~ 1.50；Structures join agent 0.30 ~ 0.70；Tackifier 0.10 ~ 1.00.Fabrication provided by the invention is high with PHA laser printing file printings clarity, after print image, is laminated laminating protective film and standard credit card is made, T-type peel strength is up to 3.5N/cm, and technological process is simple and practicable, industrialized production easy to implement.
Description
Technical field
The present invention relates to digital-code laser printing fabrication field more particularly to a kind of fabrication PHA laser printing material and its
Production method.
Background technology
Color laser printing technology has popularized use at present, the existing disclosure of laser printing material in terms of for fabrication
Formula technique has：The Chinese patent that such as number of applying for a patent is 201010125222.8 discloses special card sheet for laser printer
And preparation method thereof, it is mainly used for exempting from the low-grade cards such as the live accreditation of laminates, personalized accreditation, heat seal system cannot be laminated
Card does not meet the high-grade blocking card request such as credit card.Vehicles Collected from Market PET, PC laser printing sheet material, laminated heat seal protective film system
Card, T-type peel strength<1N/cm cannot meet the requirement of the high-grade card such as credit card.With social development, environmental protection quilt
More and more people pay close attention to, just using now can laser printing plastics PET, PC degradation time it is too long, therefore biology can drop
In golden age that solution Materials use has welcome, degradable PHA laser printing material in terms of fabrication for having not been reported.
Low with the laminated peel strength of laser printing material for fabrication, there are coating surfaces for existing water paint coating technique
Easily there is cracking and easily returns the present situations such as viscous with road, coating big, coat window relative narrower, coating room temperature influenced by ambient temperature.
In order to solve the problems, such as existing for color laser printing material these, carrying out various forms of chemical modifications and physical modification to it is
Inevitable.
Invention content
The purpose of the present invention is to provide a kind of fabrication PHA laser printing materials and preparation method thereof, print clarity
Height, T-type peel strength is high, and technological process is simple and practicable, industrialized production easy to implement.
To achieve the goals above, the technical solution adopted by the present invention is：
Fabrication PHA laser printing materials, the laser printing bearing bed group by PHA base materials and coated in the substrate surface
At the component of the laser printing bearing bed and the mass fraction of each component are as follows：
Water base PU resin emulsions 28.00 ~ 35.00；
Water base PA resin emulsions 53.00 ~ 76.00；
Carboxylic styrene butadiene latex 8.00 ~ 15.00；
Antiblocking agent 0.25 ~ 0.80；
Antistatic agent 0.15 ~ 1.50；
Wetting agent 0.25 ~ 1.50；
Structures join agent 0.30 ~ 0.70；
Tackifier 0.10 ~ 1.00.
The coating dry glue thickness of the laser printing bearing bed is 8-10 microns.
The PHA base materials are polyhydroxyalkanoate biodegradable plastic, and the PHA base materials are opaque base material, thickness
It is 120-400 microns, is measured by the regulations of GB/T 2410, shading rate>95%；It is measured by the regulations of GB/T 1633, dimension card
95-100 DEG C of temperature.
The water base PU resins are thermoplastic resin, and heat-activated temperature spot is 70-110 DEG C；The water base PU resins breast
Liquid is at least one of polyester-type, polyether-type, polyester polyether-type anionic lotion.
The water base PA resins are thermoplastic resin, and glass transition temperature point is 0-30 DEG C；The water base PA resin emulsions are
In polyacrylate dispersion, vinyl acetate/acrylate copolymer emulsion, styrene-acrylic emulsion, polyacrylic acid anionic lotion
It is one or more of.
The glass transition temperature point of the carboxylic styrene butadiene latex is 0-20 DEG C；
The antiblocking agent is one kind in carbamide resin, wax emulsion.
The antistatic agent is betaine type amphoteric surfactant.
The wetting agent is organic silicon surfactant, nonionic surfactant, in anion surfactant extremely
Few one kind.
The structures join agent is one or more of silane coupling agent, complex compound.The fusing point of the complex compound is
80-110℃.Such as one kind in complex compound D-sorbite, 4,4 '-diaminodiphenylmethane.
The tackifier are one kind in hydroxyethyl cellulose, polyurethane thickener, pH5.0-8.5.The effect of tackifier
It is to adjust coating emulsion viscosity, to be suitble to coating.
The water base PU resin emulsions, water base PA resin emulsions, carboxylic styrene butadiene latex are the solid contents being tuned into 0 degree of soft water
For 25% lotion.
The fabrication production method of PHA laser printing materials, includes the following steps：
1）, by water base PU resin emulsions, water base PA resin emulsions, carboxylic styrene butadiene latex, antiblocking agent, antistatic agent, knot
Structure coupler, wetting agent mixing, are stirred by dynamic rotor high-speed emulsifying machine, fully emulsified to obtain water base hybrid resin lotion；It stirs
It is 1200~1800 revs/min to mix speed；Each component uniformly mixes, fully emulsified, it is ensured that coating uniform；
2）, by step 1）Tackifier are added in water base hybrid resin lotion, and adjusting viscosity is 300-400CPS, and ammonium hydroxide is added
PH value is transferred to 7.5-8.5, obtains the mixing latex for being suitble to coating, then by the screen filtration of 250 mesh, for use；
3）, by PHA base materials carry out sided corona treatment, then by step 2）Mixing latex be coated on PHA base materials, coating is dry
Glue thickness is 8-10 microns, obtains fabrication PHA laser printing materials.
Coating method is using one kind in three roller transfer coated methods, the fixed thick rubbing method of air knife, coating surface flat smooth；
Being coated with slice condition is：40-72 DEG C of oven temperature, linear speed 15-25m/min can avoid the defects of coating is cracked.
The fabrication PHA laser printing materials of the present invention, printing clarity is high, after print image, is laminated laminating protective film
Standard credit card is made, T-type peel strength is up to 3.5N/cm, and lamination fabrication method is：Laminated temperature is 80-120 DEG C, layer
Resultant pressure is 1.0-1.5Mpa, and lay-up time is 18-25min.Laser printing printing layer formula of the present invention enhances interface cohesion
Power makes interface binding power T-type peel strength be more than 3.5N/cm.
Advantageous effect：
Compared with prior art, fabrication provided by the invention PHA laser printing materials and preparation method thereof have following
Advantage：Fabrication provided by the invention PHA laser printing materials are biodegradable PHA laser printing material.The PHA laser is beaten
It is high to print file printing clarity, printing clarity is up to 1440dpi；Strong with laser powder binding force, finished product rate is high.Laser is beaten
It prints the laminated peel strength of material and is more than 3.5N/cm.Fabrication provided by the invention can be widely used for manufacturing with PHA laser printing materials
The various high-grade cards such as various credits card, IC card, the ID card, social security card.The expansion of its application field meets new material exploitation institute
Healthy, the environmentally protective target and development trend of pursuit.The material provided through the invention can expand PHA material and answer
Use field.Various raw material in PHA laser printing material composition provided by the present invention are commercial prod, and raw material is easy
It obtains, there is significant industrial application value.
Description of the drawings
Fig. 1 is fabrication PHA laser printing material section structure diagrams.
Fig. 2 is the standard credit card piece section structure diagram made using fabrication PHA laser printing materials of the present invention.
Fig. 3 is fabrication PHA laser printing materials lamination standard credit card peel strength test schematic diagram.Fixture 5 is clamped
Credit card protective film, test protective film 4 and laser printing coating 3, laser printing coating 3 and laser printing bearing bed 2, laser is beaten
Print the bond strength between bearing bed 2 and PHA base materials 1.
Wherein：1-PHA base materials；2- laser printing bearing beds, 3- are laser printing coatings；4- is protective film, 5- fixtures.
Specific implementation mode
Just the specific implementation mode of the present invention is described in further detail below, it is necessary to which indicated herein is following reality
It applies example and is served only for that the present invention is described further, should not be understood as limiting the scope of the invention, the field technology
Skilled person makes some nonessential modifications and adaptations according to aforementioned present invention content to the present invention, still falls within the guarantor of the present invention
Protect range.
The three roller transfer coated heads that the apparatus for coating used in following embodiment produces for Jing Zhou company install additional after coating head
Coat thickness detection device, speed control use servo motor motor, tension force to use close-loop control mode, mode of heating
For electrical heating.
PHA base materials use the PHA credit card base materials of Jiangsu Huaxin New Materials Co., Ltd., every part of material in embodiment
1000 meters, every part of 10KG of coating compound.Compare for the ease of performance, PHA pieces film base material thickness used is 330 microns, real below
It is 8-10 μm to apply and control coating layer thickness in example.
Embodiment 1
Fabrication PHA laser printing materials, the laser printing bearing bed group by PHA base materials and coated in the substrate surface
At the component formula of the laser printing bearing bed is as follows：
The first step：It is 25% lotion that PU, PA, carboxylic styrene butadiene latex are tuned into solid content with 0 degree of soft water, as described above
Mass fraction ratio weighs various raw materials, water base PU resin emulsions, water base PA resin emulsions, antiblocking agent, antistatic agent, coupling
Agent, wetting agent, reinforcing agent（Complex compound）；
Second step：Water base PU resin emulsions, water base PA resin emulsions, carboxylic styrene butadiene latex, antiblocking agent, antistatic agent,
Coupling agent, wetting agent, reinforcing agent（Complex compound）, stirred by dynamic rotor high-speed emulsifying machine, mixing speed is 1800 revs/min,
Each component uniformly mixes, fully emulsified, it is ensured that coating uniform；
Third walks：By the water base hybrid resin lotion, tackifier is added, mixed emulsion viscosity is transferred to 300-400CPS,
Ammonium hydroxide is added, pH value is transferred to 7.5-8.5, mixing latex is made to be suitble to be coated with；
4th step：By mixed liquid by the screen filtration of 250 mesh, for use；
5th step：PHA grounds are subjected to sided corona treatment, coating method uses three roller transfer coated methods, coating surface smooth
It is smooth；Being coated with slice condition is：Oven temperature is 12 groups of temperature（℃）：40/44/48/52/56/58/62/58/56 /52/48/
44, linear speed 15m/min can avoid the defects of coating is cracked.
Embodiment 2
Fabrication PHA laser printing materials, the laser printing bearing bed group by PHA base materials and coated in the substrate surface
At the component formula of the laser printing bearing bed is as follows：
The first step：It is 25% lotion that PU, PA, carboxylic styrene butadiene latex are tuned into solid content with 0 degree of soft water, as described above
Mass fraction ratio weighs various raw materials, water base PU resin emulsions, water base PA resin emulsions, antiblocking agent, antistatic agent, coupling
Agent, wetting agent, reinforcing agent（Complex compound）；
Second step：Water base PU resin emulsions, water base PA resin emulsions, carboxylic styrene butadiene latex, antiblocking agent, antistatic agent,
Coupling agent, wetting agent, reinforcing agent（Complex compound）, stirred by dynamic rotor high-speed emulsifying machine, mixing speed is 1200~1800
Rev/min, each component uniformly mixes, fully emulsified, it is ensured that coating uniform；
Third walks：By the water base hybrid resin lotion, tackifier is added, mixed emulsion viscosity is transferred to 300-400CPS,
Ammonium hydroxide is added, pH value is transferred to 7.5-8.5, mixing latex is made to be suitble to be coated with；
4th step：By mixed liquid by the screen filtration of 250 mesh, for use；
5th step：PHA grounds are subjected to sided corona treatment, coating method uses three roller transfer coated methods, coating surface smooth
It is smooth；Being coated with slice condition is：Oven temperature is 12 groups of temperature（℃）：42/46/50/54/58/60/64/60/57 /52/48/
44, linear speed 18m/min can avoid the defects of coating is cracked.
Embodiment 3
Fabrication PHA laser printing materials, the laser printing bearing bed group by PHA base materials and coated in the substrate surface
At the component formula of the laser printing bearing bed is as follows：
The first step：It is 25% lotion that PU, PA, carboxylic styrene butadiene latex are tuned into solid content with 0 degree of soft water, as described above
Mass fraction ratio weighs various raw materials, water base PU resin emulsions, water base PA resin emulsions, antiblocking agent, antistatic agent, coupling
Agent, wetting agent, reinforcing agent（Complex compound）；
Second step：Water base PU resin emulsions, water base PA resin emulsions, carboxylic styrene butadiene latex, antiblocking agent, antistatic agent,
Coupling agent, wetting agent, reinforcing agent（Complex compound）, stirred by dynamic rotor high-speed emulsifying machine, mixing speed is 1800 revs/min,
Each component uniformly mixes, fully emulsified, it is ensured that coating uniform；
Third walks：By the water base hybrid resin lotion, tackifier is added, mixed emulsion viscosity is transferred to 300-400CPS,
Ammonium hydroxide is added, pH value is transferred to 7.5-8.5, mixing latex is made to be suitble to be coated with；
4th step：By mixed liquid by the screen filtration of 250 mesh, for use；
5th step：PHA grounds are subjected to sided corona treatment, coating method uses three roller transfer coated methods, coating surface smooth
It is smooth；Being coated with slice condition is：Oven temperature is 12 groups of temperature（℃）：42/47/52/56/60/64/67/63/57 /52/47/
43, linear speed 20m/min can avoid the defects of coating is cracked.
Embodiment 4
Fabrication PHA laser printing materials, the laser printing bearing bed group by PHA base materials and coated in the substrate surface
At the component formula of the laser printing bearing bed is as follows：
The first step：It is 25% lotion that PU, PA, carboxylic styrene butadiene latex are tuned into solid content with 0 degree of soft water, as described above
Mass fraction ratio weighs various raw materials, water base PU resin emulsions, water base PA resin emulsions, antiblocking agent, antistatic agent, coupling
Agent, wetting agent, reinforcing agent（Complex compound）；
Second step：Water base PU resin emulsions, water base PA resin emulsions, carboxylic styrene butadiene latex, antiblocking agent, antistatic agent,
Coupling agent, wetting agent, reinforcing agent（Complex compound）, stirred by dynamic rotor high-speed emulsifying machine, mixing speed is 1600 revs/min,
Each component uniformly mixes, fully emulsified, it is ensured that coating uniform；
Third walks：By the water base hybrid resin lotion, tackifier is added, mixed emulsion viscosity is transferred to 300-400CPS,
Ammonium hydroxide is added, pH value is transferred to 7.5-8.5, mixing latex is made to be suitble to be coated with；
4th step：By mixed liquid by the screen filtration of 250 mesh, for use；
5th step：PHA grounds are subjected to sided corona treatment, coating method is using three roller transfer coated methods, the fixed thick coating of air knife
One kind in method, coating surface flat smooth；Being coated with slice condition is：Oven temperature is 12 groups of temperature（℃）：42/47/52/
57/62/66/68/63/57/52/47/43, linear speed 25m/min can avoid the defects of coating is cracked.
Embodiment 5
Fabrication PHA laser printing materials, the laser printing bearing bed group by PHA base materials and coated in the substrate surface
At the component formula of the laser printing bearing bed is as follows：
The first step：It is 25% lotion that PU, PA, carboxylic styrene butadiene latex are tuned into solid content with 0 degree of soft water, as described above
Mass fraction ratio weighs various raw materials, water base PU resin emulsions, water base PA resin emulsions, antiblocking agent, antistatic agent, coupling
Agent, wetting agent, reinforcing agent（Complex compound）；
Second step：Water base PU resin emulsions, water base PA resin emulsions, carboxylic styrene butadiene latex, antiblocking agent, antistatic agent,
Coupling agent, wetting agent, reinforcing agent（Complex compound）, stirred by dynamic rotor high-speed emulsifying machine, mixing speed is 1200 revs/min,
Each component uniformly mixes, fully emulsified, it is ensured that coating uniform；
Third walks：By the water base hybrid resin lotion, tackifier is added, mixed emulsion viscosity is transferred to 300-400CPS,
Ammonium hydroxide is added, pH value is transferred to 7.5-8.5, mixing latex is made to be suitble to be coated with；
4th step：By mixed liquid by the screen filtration of 250 mesh, for use；
5th step：PHA grounds are subjected to sided corona treatment, coating method uses three roller transfer coated methods, coating surface smooth
It is smooth；Being coated with slice condition is：Oven temperature is 12 groups of temperature（℃）：42/47/52/57/62/66/72/67/62 /54/47/
43, linear speed 20m/min can avoid the defects of coating is cracked.
Embodiment 6
Fabrication PHA laser printing materials, the laser printing bearing bed group by PHA base materials and coated in the substrate surface
At the component formula of the laser printing bearing bed is as follows：
The first step：It is 25% lotion that PU, PA, carboxylic styrene butadiene latex are tuned into solid content with 0 degree of soft water, as described above
Mass fraction ratio weighs various raw materials, water base PU resin emulsions, water base PA resin emulsions, anti-stick agent, antistatic agent, coupling
Agent, wetting agent, reinforcing agent（Complex compound）；
Second step：Water base PU resin emulsions, water base PA resin emulsions, carboxylic styrene butadiene latex, antiblocking agent, antistatic agent,
Coupling agent, wetting agent, reinforcing agent（Complex compound）, stirred by dynamic rotor high-speed emulsifying machine, mixing speed is 1800 revs/min,
Each component uniformly mixes, fully emulsified, it is ensured that coating uniform；
Third walks：By the water base hybrid resin lotion, tackifier is added, mixed emulsion viscosity is transferred to 300-400CPS,
Ammonium hydroxide is added, pH value is transferred to 7.5-8.5, mixing latex is made to be suitble to be coated with；
4th step：By mixed liquid by the screen filtration of 250 mesh, for use；
5th step：PHA grounds are subjected to sided corona treatment, coating method uses three roller transfer coated methods, coating surface smooth
It is smooth；Being coated with slice condition is：Oven temperature is 12 groups of temperature (DEG C)：41/45/49/54/58/61/65/60/56/50/46/
40, linear speed 18m/min can avoid the defects of coating is cracked.
The fabrication PHA laser printing material obtained to above-described embodiment is prepared with using similar technique and same equipment
Commercial PET laser printing material（Comparative example 1）, it is tested for the property, each embodiment tests average value three times.
Test method：
1, resist blocking and that is tested, and clip 20 opens 10cm*10cm samples, every painting respectively from each embodiment 1 ~ 6 and comparative example 1
Level is upward, is superimposed completely, applies the pressure of 0.1Mpa, keeps 48h, then takes out print, is evaluated by grade：
A：To be easily peelable, and non-overlapping remaining trace；
B：It is easily peelable, there is slight remaining trace；
C：It is easily peelable, there is remaining trace；
D：It is not easily stripped.
Note：A, B is qualification
2, antistatic test is tested using sheet resistance tester with ASTM standard D-257 test methods.
3, laser printing test, using 3373 laser printer of Fuji test, test result be divided into material whether deform with
Whether print image is clear
4, standard card is made using credit card manufacturing card, according to GB/T 14916-2006 in T-type peel strength test
Equally use ISO/IEC 7810:2003 measure.
The performance comparison of fabrication PHA laser printing material and comparative example, test result see the table below：
As can be seen from the above table：
1,1 ~ 6 antistatic property of embodiment is better than comparative example, and the resist blocking and that of embodiment 1 ~ 3 is better than comparative example；
2, embodiment and comparative example laser printing are not deformed, and print image is clear；
3, embodiment makes standard credit card, tests T-type peel strength, is all higher than 3.5 N/CM, meets credit card bonding
Intensity requirement；Comparative example makes standard credit card, tests T-type peel strength, is less than 3.5 N/CM, cannot meet credit card bonding
Intensity requirement.
The above embodiments are merely intended to illustrate the present invention rather than to limit it, therefore with the present invention's
Any change in the comparable meaning and scope of claims, should be construed as being included in the scope of the claims.
Claims (10)
1. fabrication PHA laser printing materials, it is characterised in that：By PHA base materials and coated in the laser printing of the substrate surface
Bearing bed forms, and the component of the laser printing bearing bed and the mass fraction of each component are as follows：
Water base PU resin emulsions 28.00 ~ 35.00；
Water base PA resin emulsions 53.00 ~ 76.00；
Carboxylic styrene butadiene latex 8.00 ~ 15.00；
Antiblocking agent 0.25 ~ 0.80；
Antistatic agent 0.15 ~ 1.50；
Wetting agent 0.25 ~ 1.50；
Structures join agent 0.30 ~ 0.70；
Tackifier 0.10 ~ 1.00.
2. fabrication according to claim 1 PHA laser printing materials, it is characterised in that：The laser printing bearing bed
Coating dry glue thickness be 8-10 microns.
3. fabrication according to claim 1 PHA laser printing materials, it is characterised in that：The water base PU resin emulsions
For at least one of polyester-type, polyether-type, polyester polyether-type anionic lotion.
4. fabrication according to claim 1 PHA laser printing materials, it is characterised in that：The water base PA resin emulsions
For in polyacrylate dispersion, vinyl acetate/acrylate copolymer emulsion, styrene-acrylic emulsion, polyacrylic acid anionic lotion
At least one.
5. fabrication according to claim 1 PHA laser printing materials, it is characterised in that：The antiblocking agent is polyureas
One kind in resin, wax emulsion.
6. fabrication according to claim 1 PHA laser printing materials, it is characterised in that：The antistatic agent is beet
Alkaline surfactant.
7. fabrication according to claim 1 PHA laser printing materials, it is characterised in that：The wetting agent is organosilicon
At least one of surfactant, nonionic surfactant, anion surfactant.
8. fabrication according to claim 1 PHA laser printing materials, it is characterised in that：The structures join agent is silicon
One or more of alkane coupling agent, complex compound.
9. fabrication according to claim 1 PHA laser printing materials, it is characterised in that：The tackifier are ethoxy
One kind in cellulose, polyurethane thickener, pH5.0-8.5.
10. the fabrication described in claim 1 production method of PHA laser printing materials, it is characterised in that include the following steps：
1）, by water base PU resin emulsions, water base PA resin emulsions, carboxylic styrene butadiene latex, antiblocking agent, antistatic agent, structure join
Agent, wetting agent mixing are tied, stirring is fully emulsified to obtain water base hybrid resin lotion；Mixing speed is 1200~1800 revs/min；
2）, by step 1）Tackifier are added in water base hybrid resin lotion, and adjusting viscosity is 300-400CPS, and ammonium hydroxide is added by pH
Value is transferred to 7.5-8.5, obtains the mixing latex for being suitble to coating, then by the screen filtration of 250 mesh, for use；
3）, by PHA base materials carry out sided corona treatment, then by step 2）Mixing latex be coated on PHA base materials, coating dry glue is thick
Degree is 8-10 microns, obtains fabrication PHA laser printing materials.
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| CN102112512A (en) * | 2008-06-03 | 2011-06-29 | 陶氏环球技术有限责任公司 | Heat activated adhesive compositions and method of making the same |
| CN102277122A (en) * | 2011-03-30 | 2011-12-14 | 烟台联成高分子材料有限公司 | Waterborne polyurethane adhesive and manufacturing method thereof |
| CN202090180U (en) * | 2011-06-02 | 2011-12-28 | 陕西北人印刷机械有限责任公司 | Extrusion coating device for non-woven fabrics |
| CN103205214A (en) * | 2013-04-02 | 2013-07-17 | 江苏华信塑业发展有限公司 | PVC/PETG (Polyvinyl Chloride/Polyethylene Terephthalate Glycol) precoating and extruding basis-weight coating method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004060139A1 (en) * | 2004-12-13 | 2006-06-29 | Bayer Materialscience Ag | Solid-rich polyurethane-polyurea dispersions |
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2014
- 2014-12-30 CN CN201410840261.4A patent/CN105799352B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102112512A (en) * | 2008-06-03 | 2011-06-29 | 陶氏环球技术有限责任公司 | Heat activated adhesive compositions and method of making the same |
| CN102277122A (en) * | 2011-03-30 | 2011-12-14 | 烟台联成高分子材料有限公司 | Waterborne polyurethane adhesive and manufacturing method thereof |
| CN202090180U (en) * | 2011-06-02 | 2011-12-28 | 陕西北人印刷机械有限责任公司 | Extrusion coating device for non-woven fabrics |
| CN103205214A (en) * | 2013-04-02 | 2013-07-17 | 江苏华信塑业发展有限公司 | PVC/PETG (Polyvinyl Chloride/Polyethylene Terephthalate Glycol) precoating and extruding basis-weight coating method thereof |
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