CN103225232B - Synthetic Leather release liners release layer thermoplastic resin composition and adopt release liners and the preparation method of this release layer - Google Patents
Synthetic Leather release liners release layer thermoplastic resin composition and adopt release liners and the preparation method of this release layer Download PDFInfo
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- CN103225232B CN103225232B CN201310026758.8A CN201310026758A CN103225232B CN 103225232 B CN103225232 B CN 103225232B CN 201310026758 A CN201310026758 A CN 201310026758A CN 103225232 B CN103225232 B CN 103225232B
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Abstract
The present invention relates to synthetic leather production field, particularly relate to Synthetic Leather release liners release layer thermoplastic resin composition and adopt release liners and the preparation method of this release layer.This thermoplastic resin composition comprises following component: polypropylene, poly-4-methylpentene and polyethylene, the method comprises the following steps: 1) adopt hot-melt extruded machine coating process that described thermoplastic resin composition is extrusion coated on fiber base paper under 270 DEG C of-300 DEG C of molten conditions, and being cooled to normal temperature rapidly, cool time is 1-5 second; 2) use calender at 90-130 DEG C of temperature, linear pressure obtains described Synthetic Leather release liners at the pressure light of 90-120kg/cm.Invention is owing to have employed above-mentioned technical scheme, and production technology is comparatively simple, is easy to process control, low of cost, the good product performance of making.
Description
Technical field
The present invention relates to synthetic leather production field, particularly relate to Synthetic Leather release liners release layer thermoplastic resin composition and adopt release liners and the preparation method of this release layer.
Background technology
During Synthetic Leather is produced, dry method (also known as transfer coated) production technology is coated in release liners by coating agent (polyurethane), continuous print is formed after drying, uniform film, and then on film, coat binding agent and fabric (or wet bottom leather) is superimposed, drying again, peels off release liners and leather, and coating agent (comprising tack coat) film will be transferred on fabric (or leather) from release liners.Make it with the high gloss on the release layer of release liners surface.
The disclosed a kind of release layer used for artificial leather of Chinese invention patent application (application number: 201210302012.0 applyings date: 2012-08-23), its raw material consists of polyolefin, vinyl silicone oil and initator.
Chinese invention patent application (application number: 200710143898.8 applyings date: 2007-08-06) discloses a kind of release liners and manufacture method thereof, release liners comprises neutral sizing and parting agent layer, it is characterized in that: described neutral sizing side has at 120 DEG C-200 DEG C through gasoline modified gasoline modified polyvinyl resin layer, and described gasoline modified polyvinyl resin layer opposite side is provided with parting agent layer.
Chinese invention patent application (application number: 200610025397.5 applyings date: 2006-04-03) discloses a kind of low transfer mould paper and manufacture method thereof.Comprise the layer of silica gel on body paper and body paper, the component and the percentage by weight that it is characterized in that layer of silica gel are organosilicon 2 ~ 10%, catalyst 0.04 ~ 0.50% and toluene 89.5 ~ 97.96%, organosilicon coating is prepared under normal temperature, by the toluene of weight proportion, organosilicon adds in mixer, stir 5 ~ 30 minutes, add catalyst again, stir 5 ~ 30 minutes, speed of agitator is 150 ~ 300 revs/min, obtained organosilicon coating, body paper is coated with organosilicon coating, linear velocity is that body paper rolls out by 80 ~ 120M/MIN, pass through gravure roll, scraper is coated with organosilicon on the upper surface of body paper, coating weight is 0.1 ~ 1.5G/M2, body paper after upper for coating organosilicon coating is entered baking oven, baking oven is divided into 7 sections of warm areas, length is 28M, thermoregulation range is normal temperature ~ 180 DEG C, rewetting is carried out under normal temperature, by ceramic gravure roll, scraper is coated with water purification on the lower surface of body paper, the painting water yield is 0.5 ~ 3G/M2, inspection, rolling, batch finished product i.e. obtained low transfer mould paper.
The siliceous release layer that above-mentioned used high gloss release liners is coating primarily of epoxy acrylic resin, this coating hardness is high, and fragility is large, and manufacturing technique is complicated, and cost is high, only has external Ji Jia supplier to produce.Due to the painted animal migration of solvent resistance poor generation polyurethane coating in production and application process.Cannot use because the large release layer of fragility very easily ruptures, reuse number of times few, cause production cost higher.
Summary of the invention
In order to solve above-mentioned technical problem, first object of the present invention is to provide a kind of Synthetic Leather release liners coating release layer thermoplastic resin composition, and the release layer of this employing composition has good solvent resistance and good temperature tolerance.Second object of the present invention is to provide and adopts the Synthetic Leather release liners prepared of above-mentioned composition, and this release liners toughness is better, and peel strength is low and can significantly improve access times.3rd object of the present invention is to provide a kind of preparation method of Synthetic Leather release liners.
In order to realize first above-mentioned object, present invention employs following technical scheme:
Synthetic Leather release liners coating release layer thermoplastic resin composition, this thermoplastic resin composition comprises following component according to the mass fraction:
Polypropylene 100 parts by mass;
Poly-4-methylpentene 5 ~ 30 parts by mass;
Polyethylene 2 ~ 10 parts by mass.
As further improvement, this thermoplastic resin composition also comprises modified additive 0.1-0.5 parts by mass.As preferred again, modified additive selects 2,2 '-methylene-bis--(4,6-di-t-butyl phenoxy group) sodium phosphate.
As further improvement, this thermoplastic resin composition also comprises calcium stearate 0.1-0.5 parts by mass.
As further improvement, this thermoplastic resin composition also comprises glyceric acid zinc 0.1-0.5 parts by mass.
In order to realize second above-mentioned object, present invention employs following technical scheme:
High gloss Synthetic Leather release liners, this release liners is formed through press polish ornamenting after paper surface by described thermoplastic resin composition heat seeling coating.
As preferably, the coating weight of thermoplastic resin composition is 10-50g/m
2.
As preferably, the glossiness of described Synthetic Leather release liners is 92-95.
In order to realize the 3rd above-mentioned object, present invention employs following technical scheme:
Prepare a method for high gloss Synthetic Leather release liners, the method comprises the following steps:
1) adopt hot-melt extruded machine coating process that described thermoplastic resin composition is extrusion coated on fiber base paper under 270 DEG C of-300 DEG C of molten conditions, and be cooled to normal temperature rapidly, cool time is 1-5 second;
2) use calender at 90-130 DEG C of temperature, linear pressure obtains described Synthetic Leather release liners at the pressure light of 90-120kg/cm.
As preferably, the coating weight of thermoplastic resin composition is 10-50g/m
2.
The present invention is owing to have employed above-mentioned technical scheme, and relative in the production technology of high gloss release liners before, tool of the present invention has the following advantages:
1, the technology that is combined with press polish of heat seeling coating of the present invention is to improve the glossiness on release layer surface, and improves the heat distortion temperature of release layer, sur-face peeling intensity, bending strength and pliability by adding various auxiliary agent;
2, production technology is comparatively simple, and be easy to process control, cost is low;
3, excellent solvent resistance, can not produce the painted animal migration to polyurethane coating, repeat performance is good;
4, good peel strength, temperature tolerance and solvent resistance and pliability, can use for a long time, and can reuse 15-60 time under the high temperature of 120-150 DEG C.
Detailed description of the invention
embodiment 1
Resinous coat modified formula is polypropylene (PP) material of parts by mass 100 parts, 5 parts of poly-4-methylpentenes (TPX), 0 part of polyethylene (PE) material, 0.1 part of parts by mass 2,2 '-methylene-bis--(4,6-di-t-butyl phenoxy group) sodium phosphate, 0.1 part of calcium stearate, after 0.1 part of glyceric acid zinc, mixed with resin order is: first add polypropylene, poly-4-methylpentene, polyethylene, glyceric acid zinc homogenizer stir 4 minutes, add 2 successively again, 2 '-methylene-bis--(4,6-di-t-butyl phenoxy group) sodium phosphate, calcium stearate stir 5 minutes.Enter hot-melt extruded machine after stirring extrusion coated with on fiber base paper 270 DEG C of molten conditions, coating weight is 10g/m
2.Then with calender at 110 DEG C of temperature, linear pressure carries out press polish under the pressure of 90kg/cm.After press polish, the glossiness of product reaches 92 degree, and sur-face peeling intensity is 6.77N/m, and heat distortion temperature is 130 DEG C, and bending strength is 30.5MPa, and reuse number of times 26 times, solvent resistance is excellent.
embodiment 2
Modified resin coating formula is polypropylene (PP) material of parts by mass 100 parts, 20 parts of poly-4-methylpentenes (TPX), 3 parts of polyethylene (PE) materials, 0.2 part of parts by mass 2,2 '-methylene-bis--(4,6-di-t-butyl phenoxy group) sodium phosphate, 0.2 part of calcium stearate, after 0.2 part of glyceric acid zinc, mixed with resin order is by embodiment 1.Enter hot-melt extruded machine after stirring extrusion coated with on fiber base paper 280 DEG C of molten conditions, coating weight is 30g/m
2.Then with 5 roll calendar machines at 115 DEG C of temperature, linear pressure carries out press polish under the pressure of 100kg/cm.After press polish, the glossiness of product reaches 94 degree, and sur-face peeling intensity is 6.0N/m, heat distortion temperature 132 DEG C, and bending strength is 35.8MPa, and multiple access times 60 times, solvent resistance is excellent.
embodiment 3
Modified resin coating formula is polypropylene (PP) material of parts by mass 100 parts, 20 parts of poly-4-methylpentenes (TPX), 3 parts of polyethylene (PE) materials, 0.3 part of parts by mass 2,2 '-methylene-bis--(4,6-di-t-butyl phenoxy group) sodium phosphate, 0.3 part of calcium stearate, after 0.3 part of glyceric acid zinc, mixed with resin order enters hot-melt extruded machine after stirring by embodiment 1 extrusion coated with on fiber base paper 290 DEG C of molten conditions, and coating weight is 35g/m
2.Then with calender at 120 DEG C of temperature, linear pressure carries out press polish under the pressure of 105kg/cm.After press polish, the glossiness of product reaches 95 degree, and sur-face peeling intensity is 3.5N/m, heat distortion temperature 135 DEG C, and bending strength is 37.6MPa, and multiple access times 45 times, solvent resistance is excellent.
embodiment 4
Modified resin coating formula is polypropylene (PP) material of parts by mass 100 parts, 30 parts of poly-4-methylpentenes (TPX), 10 parts of polyethylene (PE) materials, 0.5 part of parts by mass 2,2 '-methylene-bis--(4,6-di-t-butyl phenoxy group) sodium phosphate, 0.5 part of calcium stearate, after 0.5 part of glyceric acid zinc, mixed with resin order is by embodiment 1.Enter hot-melt extruded machine after stirring extrusion coated with on fiber base paper 300 DEG C of molten conditions, coating weight is 50g/m
2.Then with calender at 130 DEG C of temperature, linear pressure carries out press polish under the pressure of 150kg/cm.After press polish, the glossiness of product reaches 95 degree, and sur-face peeling intensity is 2.0N/m, heat distortion temperature 135 DEG C, and bending strength is 41.8MPa, and multiple access times 32 times, solvent resistance is excellent.
Claims (3)
1. a preparation method for high gloss Synthetic Leather release liners, is characterized in that the method comprises the following steps:
1) adopt hot-melt extruded machine coating process that thermoplastic resin composition is extrusion coated on fiber base paper under 270 DEG C of-300 DEG C of molten conditions, and be cooled to normal temperature rapidly, cool time is 1-5 second;
Described thermoplastic resin composition is made up of following component according to the mass fraction:
Polypropylene 100 parts by mass;
Poly-4-methylpentene 5 ~ 30 parts by mass;
Polyethylene 2 ~ 10 parts by mass;
2,2 '-methylene-bis--(4,6-di-t-butyl phenoxy group) sodium phosphate 0.1-0.5 parts by mass;
Calcium stearate 0.1-0.5 parts by mass;
Glyceric acid zinc 0.1-0.5 parts by mass;
2) use calender at 90-130 DEG C of temperature, linear pressure obtains described Synthetic Leather release liners at the pressure light of 90-120kg/cm.
2. the preparation method of a kind of high gloss Synthetic Leather release liners according to claim 1, is characterized in that: the coating weight of thermoplastic resin composition is 10-50g/m
2.
3. the preparation method of a kind of high gloss Synthetic Leather release liners according to claim 1, is characterized in that: the glossiness of described Synthetic Leather release liners is 92-95.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310026758.8A CN103225232B (en) | 2013-01-24 | 2013-01-24 | Synthetic Leather release liners release layer thermoplastic resin composition and adopt release liners and the preparation method of this release layer |
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| CN201310026758.8A CN103225232B (en) | 2013-01-24 | 2013-01-24 | Synthetic Leather release liners release layer thermoplastic resin composition and adopt release liners and the preparation method of this release layer |
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| CN103225232A CN103225232A (en) | 2013-07-31 |
| CN103225232B true CN103225232B (en) | 2015-10-07 |
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| CN105926362B (en) * | 2016-04-26 | 2018-01-26 | 浙江凯伦特种材料有限公司 | Flexible PCB resistance glue release liners release layer thermoplastic resin composition, resistance glue release liners and preparation method thereof |
| CN108166318A (en) * | 2017-12-22 | 2018-06-15 | 嘉兴百川特种纸业有限公司 | The special coating of release paper peeling effect can be improved |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102817284A (en) * | 2012-08-23 | 2012-12-12 | 浙江池河科技有限公司 | Release layer and release paper used for artificial leather |
| CN103183871A (en) * | 2011-12-31 | 2013-07-03 | 北京化工大学 | Polypropylene based resin composition for leather release paper, and preparation method and application thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1077466A (en) * | 1992-04-09 | 1993-10-20 | 澳大利亚卜内门军品独占有限公司 | Polymer composition |
| JP2005350650A (en) * | 2004-05-14 | 2005-12-22 | Nitto Denko Corp | Release liner and pressure-sensitive adhesive tape or sheet using the same |
| WO2010126559A1 (en) * | 2009-04-30 | 2010-11-04 | Milliken & Company | Nucleating agent and thermoplastic compositions comprising the same |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103183871A (en) * | 2011-12-31 | 2013-07-03 | 北京化工大学 | Polypropylene based resin composition for leather release paper, and preparation method and application thereof |
| CN102817284A (en) * | 2012-08-23 | 2012-12-12 | 浙江池河科技有限公司 | Release layer and release paper used for artificial leather |
Non-Patent Citations (2)
| Title |
|---|
| 王立 等.2,2"-亚甲基双(4,6-二叔丁基苯基)磷酸钠的合成新方法.《中山大学学报(自然科学版)》.2007,第46卷(第1期),第136～138页. * |
| 甘油锌用作PVC热稳定剂的研究;申雄军 等;《中国塑料》;20080531;第22卷(第5期);第71～73页 * |
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