CN105064126A - Pre-treatment process for release paper for synthetic leather production - Google Patents
Pre-treatment process for release paper for synthetic leather production Download PDFInfo
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- CN105064126A CN105064126A CN201510482276.2A CN201510482276A CN105064126A CN 105064126 A CN105064126 A CN 105064126A CN 201510482276 A CN201510482276 A CN 201510482276A CN 105064126 A CN105064126 A CN 105064126A
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- slurry
- aqueous polyurethane
- polyurethane resin
- release liners
- synthetic leather
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Abstract
The present invention discloses a pre-treatment process for release paper for synthetic leather production. The pre-treatment process comprises the following steps of preparing aqueous polyurethane slurry; applying the aqueous polyurethane slurry onto a silicone oil layer surface of the release paper to form an aqueous polyurethane slurry layer; preparing polyurethane resin slurry; applying the polyurethane resin slurry onto the aqueous polyurethane slurry layer surface of the release paper to form a polyurethane resin slurry layer; and separating the aqueous polyurethane slurry layer and the polyurethane resin slurry layer from the release paper. Compared with the prior art, the pre-treatment process has the advantages that a silicone oil layer of the release paper is enabled to be more stable; the silicone oil layer is not prone to damage in the synthetic leather production process; the consumable cost is low; and the optical haze value of the release paper can be stabilized, so that the glossiness of a subsequent synthetic leather product is more stable.
Description
Technical field
The present invention relates to the release liners treatment process technical field in synthetic leather production, the pre-treatment process of in particular synthetic leather production release liners.
Background technology
Along with the more and more specification in synthetic leather market, the classification of synthetic leather product uses more and more meticulousr, and the appearance requirement of client to product is more and more stricter.The attention of client is wherein also more and more subject to as a significant surfaces characteristic index glossiness of sofa artificial leather.Owing to being difficult to the uniformity keeping new and old release liners glossiness in the normal use that existing release liners is produced at synthetic leather, the glossiness difference between the synthetic leather product causing different batches, affect client's use.
Summary of the invention
The present invention, just in order to avoid the weak point existing for above-mentioned prior art, provides a kind of pre-treatment process of synthetic leather production release liners.
The present invention is that technical solution problem adopts following technical scheme:
A pre-treatment process for synthetic leather production release liners, comprises the steps:
(1) configure aqueous polyurethane slurry, described aqueous polyurethane slurry is made up of the raw material of following weight: aqueous polyurethane 80-120 part, water-based thickener 0.5-1.5 part, aqueous pigment 0.4-0.6 part;
(2) described aqueous polyurethane slurry is coated in the silicon layer of release liners on the surface, coating thickness is 2-5 silk, then at the temperature of 70-130 DEG C, dries 30-90s, forms aqueous polyurethane pulp layer;
(3) configure Polyurethane resin slurry, described Polyurethane resin slurry is made up of the raw material of following weight proportion: polyurethane resin 80-120 part, dimethyl formamide 30-50 part, pigment 4-6 part;
(4) described Polyurethane resin slurry is coated in the aqueous polyurethane pulp layer surface in release liners, coating thickness is 20-25 silk, then at the temperature of 110-140 DEG C, dries 30-90s, forms Polyurethane resin slurry layer;
(5) aqueous polyurethane pulp layer is separated with release liners with Polyurethane resin slurry layer.
As the preferred embodiment of technique scheme, in described step (1), described aqueous polyurethane slurry is made up of the raw material of following weight: aqueous polyurethane 100 parts, water-based thickener 1 part, aqueous pigment 0.5 part; In described step (3), described Polyurethane resin slurry is made up of the raw material of following weight proportion: polyurethane resin 100 parts, dimethyl formamide 40 parts, pigment 5 parts.
As the preferred embodiment of technique scheme, in described step (1), the viscosity of described aqueous polyurethane slurry is 1000-1500mpa.s.
As the preferred embodiment of technique scheme, in described step (3), the viscosity of described Polyurethane resin slurry is 2500-3500mpa.s.
Compared with the prior art, beneficial effect of the present invention is embodied in:
1, the silicon layer of release liners can be made more stable, in the production of synthetic leather, not easily produce silicon layer breakage, consumables cost is low
The pre-treatment process of synthetic leather production release liners provided by the invention, for also not dropping into the release liners of synthetic leather production and application, aqueous polyurethane slurry is directly coated on the silicon layer of release liners, verify through actual production, the intensity of the silicon layer of release liners can be improved, in producing for follow-up synthetic leather, the silicon layer not cracky on release liners surface, improves the reusable number of times of release liners.Through actual production demonstration, use the release liners of process of the present invention on average to reuse number of times and will improve 1/3 than untreated release liners, in the synthetic leather finished product of production equivalent amount, need the release liners of use less, consumables cost reduces.
2, the haze of release liners can be stablized, make the glossiness of follow-up synthetic leather finished product more stable
In this pre-treatment process, aqueous polyurethane slurry is coated on the silicon layer of release liners, the silicon layer chemism of release liners can be made more stable, more difficultly to change, even intensive polar solvent such as dimethyl formamide etc. also can not impact it in follow-up use, thus the surface haze that silicon layer shows can not be changed, verify through actual production, this release liners be used in follow-up synthetic leather production, the glossiness of obtained synthetic leather finished product is more uniform and stable.
3, the aqueous polyurethane pulp layer in release liners applies Polyurethane resin slurry layer on the surface, can increase the thickness of coat in release liners, to be better separated when making aqueous polyurethane pulp layer be separated with release liners.
Detailed description of the invention
Elaborate to embodiments of the invention below, the present embodiment is implemented under premised on technical solution of the present invention, give detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
Embodiment one
The present embodiment is the preferred embodiments of the present invention, and the pre-treatment process of a kind of synthetic leather production release liners that the present embodiment provides, comprises the steps:
(1) configure the aqueous polyurethane slurry that viscosity is 1250mpa.s, this aqueous polyurethane slurry is made up of the raw material of following weight: aqueous polyurethane 100 parts, water-based thickener 1 part, aqueous pigment 0.5 part;
(2) aqueous polyurethane slurry is coated in the silicon layer of release liners on the surface, coating thickness is 3.5, then at the temperature of 100 DEG C, dries 60s, forms aqueous polyurethane pulp layer;
(3) configuring viscosity is the Polyurethane resin slurry of 3000mpa.s, and this Polyurethane resin slurry is made up of the raw material of following weight proportion: polyurethane resin 100 parts, dimethyl formamide 40 parts, pigment 5 parts;
(4) Polyurethane resin slurry is coated in the aqueous polyurethane pulp layer surface in release liners, coating thickness is 22, then at the temperature of 125 DEG C, dries 60s, forms Polyurethane resin slurry layer;
(5) aqueous polyurethane pulp layer is separated with release liners with Polyurethane resin slurry layer.
Embodiment two
The pre-treatment process of a kind of synthetic leather production release liners that the present embodiment provides, comprises the steps:
(1) configure the aqueous polyurethane slurry that viscosity is 1000mpa.s, this aqueous polyurethane slurry is made up of the raw material of following weight: aqueous polyurethane 80 parts, water-based thickener 0.5 part, aqueous pigment 0.4 part;
(2) aqueous polyurethane slurry is coated in the silicon layer of release liners on the surface, coating thickness is 2, then at the temperature of 70 DEG C, dries 30s, forms aqueous polyurethane pulp layer;
(3) configuring viscosity is the Polyurethane resin slurry of 2500mpa.s, and this Polyurethane resin slurry is made up of the raw material of following weight proportion: polyurethane resin 80 parts, dimethyl formamide 30 parts, pigment 4 parts;
(4) Polyurethane resin slurry is coated in the aqueous polyurethane pulp layer surface in release liners, coating thickness is 20, then at the temperature of 110 DEG C, dries 30s, forms Polyurethane resin slurry layer;
(5) aqueous polyurethane pulp layer is separated with release liners with Polyurethane resin slurry layer.
Embodiment three
The pre-treatment process of a kind of synthetic leather production release liners that the present embodiment provides, comprises the steps:
(1) configure the aqueous polyurethane slurry that viscosity is 1500mpa.s, this aqueous polyurethane slurry is made up of the raw material of following weight: aqueous polyurethane 120 parts, water-based thickener 1.5 parts, aqueous pigment 0.6 part;
(2) aqueous polyurethane slurry is coated in the silicon layer of release liners on the surface, coating thickness is 5, then at the temperature of 130 DEG C, dries 90s, forms aqueous polyurethane pulp layer;
(3) configuring viscosity is the Polyurethane resin slurry of 3500mpa.s, and this Polyurethane resin slurry is made up of the raw material of following weight proportion: polyurethane resin 120 parts, dimethyl formamide 50 parts, pigment 6 parts;
(4) Polyurethane resin slurry is coated in the aqueous polyurethane pulp layer surface in release liners, coating thickness is 25, then at the temperature of 140 DEG C, dries 90s, forms Polyurethane resin slurry layer;
(5) aqueous polyurethane pulp layer is separated with release liners with Polyurethane resin slurry layer.
These are only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. a pre-treatment process for synthetic leather production release liners, is characterized in that, comprises the steps:
(1) configure aqueous polyurethane slurry, described aqueous polyurethane slurry is made up of the raw material of following weight: aqueous polyurethane 80-120 part, water-based thickener 0.5-1.5 part, aqueous pigment 0.4-0.6 part;
(2) described aqueous polyurethane slurry is coated in the silicon layer of release liners on the surface, coating thickness is 2-5 silk, then at the temperature of 70-130 DEG C, dries 30-90s, forms aqueous polyurethane pulp layer;
(3) configure Polyurethane resin slurry, described Polyurethane resin slurry is made up of the raw material of following weight proportion: polyurethane resin 80-120 part, dimethyl formamide 30-50 part, pigment 4-6 part;
(4) described Polyurethane resin slurry is coated in the aqueous polyurethane pulp layer surface in release liners, coating thickness is 20-25 silk, then at the temperature of 110-140 DEG C, dries 30-90s, forms Polyurethane resin slurry layer;
(5) aqueous polyurethane pulp layer is separated with release liners with Polyurethane resin slurry layer.
2. the pre-treatment process of a kind of synthetic leather production release liners as claimed in claim 1, it is characterized in that, in described step (1), described aqueous polyurethane slurry is made up of the raw material of following weight: aqueous polyurethane 100 parts, water-based thickener 1 part, aqueous pigment 0.5 part; In described step (3), described Polyurethane resin slurry is made up of the raw material of following weight proportion: polyurethane resin 100 parts, dimethyl formamide 40 parts, pigment 5 parts.
3. the pre-treatment process of a kind of synthetic leather production release liners as claimed in claim 1, is characterized in that, in described step (1), the viscosity of described aqueous polyurethane slurry is 1000-1500mpa.s.
4. the pre-treatment process of a kind of synthetic leather production release liners as claimed in claim 1, is characterized in that, in described step (3), the viscosity of described Polyurethane resin slurry is 2500-3500mpa.s.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510482276.2A CN105064126A (en) | 2015-08-07 | 2015-08-07 | Pre-treatment process for release paper for synthetic leather production |
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| CN201510482276.2A CN105064126A (en) | 2015-08-07 | 2015-08-07 | Pre-treatment process for release paper for synthetic leather production |
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| CN105064126A true CN105064126A (en) | 2015-11-18 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS516286A (en) * | 1974-07-03 | 1976-01-19 | Roehm & Haas Gmbh | Oshitsubushita hatsuhotai nunojinotasosekisobutsupin |
| GB2132940B (en) * | 1982-12-13 | 1986-08-13 | Ajinomoto Kk | Release sheet |
| US20050244654A1 (en) * | 2004-05-03 | 2005-11-03 | San Fang Chemical Industry Co. Ltd. | Artificial leather |
| CN101666043A (en) * | 2009-09-15 | 2010-03-10 | 烟台万华超纤股份有限公司 | Waterborne polyurethane coating transfer synthetic leather and manufacturing method |
| JP4839521B2 (en) * | 2001-03-29 | 2011-12-21 | 大日本印刷株式会社 | Release paper and synthetic leather produced using it |
| CN103276624A (en) * | 2013-05-28 | 2013-09-04 | 福建省铭兴激光科技有限公司 | Release paper for artificial leather and manufacturing method thereof |
| CN103437241A (en) * | 2013-05-25 | 2013-12-11 | 福建省铭兴激光科技有限公司 | Release paper for artificial leathers and preparation method thereof |
| CN104404778A (en) * | 2014-11-26 | 2015-03-11 | 安徽宝博合成革有限公司 | Automobile decoration sofa leather |
-
2015
- 2015-08-07 CN CN201510482276.2A patent/CN105064126A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS516286A (en) * | 1974-07-03 | 1976-01-19 | Roehm & Haas Gmbh | Oshitsubushita hatsuhotai nunojinotasosekisobutsupin |
| GB2132940B (en) * | 1982-12-13 | 1986-08-13 | Ajinomoto Kk | Release sheet |
| JP4839521B2 (en) * | 2001-03-29 | 2011-12-21 | 大日本印刷株式会社 | Release paper and synthetic leather produced using it |
| US20050244654A1 (en) * | 2004-05-03 | 2005-11-03 | San Fang Chemical Industry Co. Ltd. | Artificial leather |
| CN101666043A (en) * | 2009-09-15 | 2010-03-10 | 烟台万华超纤股份有限公司 | Waterborne polyurethane coating transfer synthetic leather and manufacturing method |
| CN103437241A (en) * | 2013-05-25 | 2013-12-11 | 福建省铭兴激光科技有限公司 | Release paper for artificial leathers and preparation method thereof |
| CN103276624A (en) * | 2013-05-28 | 2013-09-04 | 福建省铭兴激光科技有限公司 | Release paper for artificial leather and manufacturing method thereof |
| CN104404778A (en) * | 2014-11-26 | 2015-03-11 | 安徽宝博合成革有限公司 | Automobile decoration sofa leather |
Non-Patent Citations (2)
| Title |
|---|
| 文琼菊: "《常用纸张品种简明手册》", 31 January 2005, 北京：化学工业出版社 * |
| 王全杰 等: ""水性聚氨酯合成革技术的研究进展"", 《西部皮革》 * |
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