CN104097377A - Two-sided release paper and production method thereof - Google Patents
Two-sided release paper and production method thereof Download PDFInfo
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- CN104097377A CN104097377A CN201410322664.XA CN201410322664A CN104097377A CN 104097377 A CN104097377 A CN 104097377A CN 201410322664 A CN201410322664 A CN 201410322664A CN 104097377 A CN104097377 A CN 104097377A
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Abstract
The invention relates to a piece of two-sided release paper. The two-sided release paper comprises a raw paper base layer; a pattern resin layer is arranged on the surface of the raw paper base layer; the pattern resin layer is arranged on the right side of the raw paper base layer; a balance resin layer is arranged on the back side of the raw paper base layer. The two-sided release paper has the benefits that filming and coating the pattern resin layer and the balance resin layer on the right side and the back side of the raw paper base layer respectively can be utilized to greatly improve the tensile strength and the flexural property of the release paper, so that the release frequency of the release paper can be greatly increased, the recycling rate of the release paper can be greatly improved, the production cost of copying patterns on leather products can be reduced, and dependence on foreign products can be avoided; besides, during the process of copying the patterns and drying and releasing leather surface materials, the release paper curls due to the reduction of the edge parts of the release paper, so that the release paper is convenient for releasing, rolling operation and recycling utilization; moreover, the paper ration of raw paper can be lowered appropriately, and the production cost of the release paper can be reduced maximally.
Description
Technical field
The present invention relates to a kind of decorative pattern carrier, relate in particular a kind ofly decorative pattern to be copied to synthetic leather, leather and the lip-deep two-sided release liners of super fine leather and production method thereof, be mainly used in the production field of synthetic leather, leather, super fine leather.
Background technology
The surface detail of synthetic leather, leather or super fine leather goods copies now and mainly by two kinds of modes, realizes, one is leather embossing machine, utilize concave-convex wheel structure, make leather fabric when through concave, utilize the sags and crests on concave leather fabric upper and lower surface to be driven away to pressure simultaneously, the sags and crests decorative pattern on concave is replicated on leather, adopt in this way, although it is simple to copy damascene process, easily leather surface is caused to damage, affect the outward appearance of leather; Secondly, concave drives the easy resilience of decorative pattern of extrusion away, uses or deposits after a period of time, makes decorative pattern lines smudgy.It two is release liners isolation technics, the existing synthetic leather that is applied to, release liners on leather and super fine leather is all one side, on former recto, showering tree refers to layer, then utilize patterned roll to carry out roll extrusion to resin bed, thereby the decorative pattern in patterned roll is copied on the resin bed on body paper front, producing synthetic leather, leather, super fine leather process is coated to face fabric on decorative pattern resin bed, through foaming, dry, crosslinked, after the operations such as solidifying and setting, again leather fabric and release liners being peeled off to the decorative pattern making on resin bed mutually copies on the surface of leather fabric, thereby obtain the synthetic leather finished product that decorative pattern is attractive in appearance, although one side release liners also can copy to decorative pattern on leather fabric, one side release liners to peel off number of times less, recycling rate of waterused is lower, has virtually improved the production cost of decorative pattern leather goods, this is one, its two, after existing one side release liners and leather fabric are peeled off, the dual-side of release liners easily bends, the secondary that affects release liners is used, and has reduced the access times of release liners, has improved the manufacturing cost of decorative pattern leather goods, its three, release liners is in the market all by quantitatively at 125g/m substantially
2above body paper is produced, and the release liners that production cost is high and current domestic leather industry is used that causes like this release liners is whole dependence on import substantially, because release liners import cost is high, four, whole dependence on import of the dark decorative pattern of one side release liners, and external technique is all the decorative pattern that adopts the female compacting of ridge design roller to form, and reuses, decorative pattern is easy to fuzzyly fall.
Summary of the invention
In order to solve above technical problem, the invention provides a kind of two-sided release liners and production method thereof, the release liners of producing by this production method not only can increase the number of times of peeling off of release liners, greatly improved the recycling rate of waterused of release liners, reduce the production cost of decorative pattern leather goods, break away from the dependence to external product; Secondly, also can effectively reduce release liners and bend after oven dry is peeled off, be convenient to rolling operation and reuse and reduce the quantitative of body paper, farthest save the production cost of release liners.
For solving above technical problem, the technical scheme that the present invention takes is a kind of two-sided release liners, includes body paper basic unit, on the surface of body paper basic unit, is provided with decorative pattern resin bed, described decorative pattern resin bed is arranged on the front of body paper basic unit, at the back side of body paper basic unit, is provided with balance resin bed.
Further, the Substance of described body paper basic unit is: 80g/m
2～150g/m
2.
Further, the thickness of described decorative pattern resin bed is 0.2～0.7mm.
Further, the thickness of described balance resin bed is 0.2～0.5mm.
The present invention also provides a kind of production method of two-sided release liners, and its concrete steps are as follows:
A, to choose be quantitatively 110g/m
2～150g/m
2, just, back side smoothness: 70～80/sec, tensile strength>=3.5KN/m
2body paper;
B, body paper paper roll is placed in the unreeling structure of film coating machine and the back side upward, the speed of a motor vehicle of film coating machine is controlled to 20m～40m/min and makes body paper tiling through each mechanism of film coating machine;
C, polypropylene and polyethylene are dry mixed to the feeding warehouse of putting into film coating machine after closing are heated to 250 ℃～290 ℃ that it is formed is liquid, and the T-shaped extruder head that utilizes film coating machine is uniformly coated on the back side of body paper, by temperature, be then that 30 ℃～40 ℃ composite rolls extruding make it be cooled to balance resin bed the rolling that thickness is 0.2～0.5mm;
D, again the body paper paper roll of back side showering balance resin bed put into the unreeling structure of film coating machine and faced up, the speed of a motor vehicle of film coating machine being controlled to 10m～30m/min and making body paper tiling through each mechanism of film coating machine;
E, polypropylene and polyethylene are dry mixed to the feeding warehouse of putting into film coating machine after closing are heated to 250 ℃～290 ℃ that it is formed is liquid, and the T-shaped extruder head that utilizes film coating machine is uniformly coated on former recto, then by temperature, be that the extruding of 20 ℃～40 ℃ composite rolls makes to be coated on the cooling film forming of resin on body paper front, then utilize immediately patterned roll on film coating machine to drive away to press the decorative pattern making in patterned roll to copy to and on body paper front, form decorative pattern resin bed the rolling that thickness is 0.2～0.7mm.
Further, described polypropylene 60～80%, polyethylene 20～40%.
The invention has the beneficial effects as follows utilize body paper basic unit just, the back side respectively film apply decorative pattern resin bed and balance resin bed, so just can promote greatly tensile strength and the flexible resistance of release liners, make peeling off number of times and can significantly increasing of release liners, greatly improved the recycling rate of waterused of release liners, reduce the production cost that leather goods surface detail copies, break away from the dependence to external product; And when copying decorative pattern and leather facing material dry in stripping process, release trimming portion reduces and occurs curlingly, is convenient to peel off and the rolling operation of release liners and reusing; Secondly, also can suitably reduce the Substance of release liners body paper, farthest save the production cost of release liners.
Accompanying drawing explanation
Fig. 1 be a kind of two-sided release liners of the embodiment of the present invention analyse and observe easy structure figure
The specific embodiment
Below in conjunction with accompanying drawing, embodiment of the present invention is described further:
As shown in Figure 1, the present invention is a kind of two-sided release liners, includes body paper basic unit 1, on the surface of body paper basic unit 1, is provided with decorative pattern resin bed 2, and described decorative pattern resin bed 2 is arranged on the front of body paper basic unit 1, at the back side of body paper basic unit 1, is provided with balance resin bed 3; Body paper basic unit 1 just, the back side respectively showering decorative pattern resin bed 2 and balance resin bed 3, so just can promote greatly tensile strength and the flexible resistance of release liners, make peeling off number of times and can significantly increasing of release liners, greatly improve the recycling rate of waterused of release liners, and can effectively avoid the delamination of decorative pattern resin bed and vertical, horizontal tearability and the longitudinal pulling force intensity of lifting release liners; And two-sided release liners and leather facing material are dried in stripping process when copying decorative pattern, two-sided release trimming portion reduces and occurs curlingly, is convenient to peel off and the rolling operation of release liners and reusing; Secondly, also can suitably reduce the Substance of release liners body paper, farthest save the production cost of release liners, and can again utilize the useless coil paper of existing one side release liners, at the back side of existing one side release liners, add decorative pattern resin bed, make the flower-pattern layer of original one side release liners as balance resin bed, can realize like this recycling of waste product, reduce the production cost of enterprise.
Table 1 is the operation technique performance indications contrast of conventional one side release liners on existing market and the two-sided release liners of the present invention:
Table 1
In the present embodiment, in order to reduce the production cost of release liners, the Substance of described body paper basic unit 1 is: 80g/m
2～150g/m
2.Because the body paper of existing one side release liners quantitatively at least requires at 125g/m
2more than could meet the horizontal tearability of release liners and the requirement of tensile strength, and in the present invention, increased after balance resin bed 3, horizontal tearability and the tensile strength of body paper basic unit 1 promote greatly, when meeting user demand, the Substance of reduction body paper basic unit 1 that also can be suitable is saved production cost; While certainly producing, can select corresponding Substance according to user's actual need, the present invention is not further qualified.
In the present embodiment, in order to improve the production cost of peeling off number of times and control release liners of release liners, the thickness of described decorative pattern resin bed 2 is 0.2～0.7mm, concrete thickness can decide according to the surface detail degree of depth of leather facing material, the degree of depth of pattern groove is darker, the thickness of decorative pattern resin bed strengthens accordingly, is directly proportional to the degree of depth of decorative pattern.
In the present embodiment, in order farthest to avoid body paper basic unit 1 bending phenomenon occurs when the showering resin post-drying and farthest promote vertical, horizontal tearability and the tensile strength of body paper basic unit 1, thickness 0.2～the 0.5mm of described balance resin bed 3, concrete thickness decides according to the thickness of decorative pattern resin bed 2, due to when leather facing material copies decorative pattern, need to dry and peel off, and decorative pattern resin bed 2 is after drying, the resin of decorative pattern resin bed 2 can shrink to the central hot of release liners, thereby cause release trimming portion can occur curling, affect the stripping performance and the repeat performance of peeling off rear release liners of release liners, the back side of Er body paper basic unit 1 increases balance resin bed 3, utilize the resin thermal contraction of balance resin bed 3 to carry out reverse curling stretching to the limit portion of two-sided release liners, so just can reduce two-sided release liners occurs curling when peeling off with leather facing material oven dry, guarantee stripping performance and the repeat performance of two-sided release liners, the thickness of balance resin bed 3 strengthens with the increase of decorative pattern resin bed 2.
For the ease of producing above-mentioned release liners, the present invention also provides a kind of production method of two-sided release liners, and its concrete steps are as follows:
A, to choose be quantitatively 80g/m
2～150g/m
2, just, back side smoothness: 70～80/sec, tensile strength>=3.5KN/m
2body paper; Body paper is the complete wooden oar paper of directly buying from the market, when producing, only need to choose suitably quantitative paper according to user's request, and body paper must meet above-mentioned technical indicator;
B, body paper paper roll is placed in the unreeling structure of film coating machine and the back side upward, the speed of a motor vehicle of film coating machine is controlled to 20m～40m/min and makes body paper tiling through each mechanism of film coating machine; Before production, first body paper paper roll is arranged on film coating machine, and tiling is through each mechanism, (this technique is identical with the raw technique of existing release liners to adjust to suitable tension force, those skilled in the art can arbitrarily obtain, at this, no longer describe in detail), and the speed of a motor vehicle is controlled to preferred 30m/min carries out body paper conveying; Film coating machine is that (the inner minute producer of industry and user habit are referred to as film machine for the product of comparative maturity on domestic market, claim again to extrude compounding machine, casting machine, extrude casting machine, curtain coating compounding machine, film applicator, coating machine, coating complex machine etc., be a kind of of extrusion molding machinery.Having that automaticity is high, easy and simple to handle, speed of production is high, coating layer thickness is even, bonding intensity is high, it is smooth, environment friendly and pollution-free to batch, save the advantages such as artificial and cost of material) its structure do not describing in detail.
C, polypropylene and polyethylene are dry mixed to the feeding warehouse of putting into film coating machine after closing are heated to 250 ℃～290 ℃ that it is formed is liquid, and the T-shaped extruder head that utilizes film coating machine is uniformly coated on the back side of body paper, by temperature, be then that 30 ℃～40 ℃ composite rolls extruding make it be cooled to balance resin bed the rolling that thickness is 0.2～0.5mm; By film coating machine, polypropylene and polyethylene hybrid resin are fused into liquid state, recycle T-shaped extruder head and liquid hybrid resin is coated uniformly on the back side of body paper, by film, apply built-in temperature subsequently and be preferably 40 ℃ of composite rolls and push, dry the hybrid resin crosslinking curing that makes on the body paper back side and form balance resin bed 3;
D, again the body paper paper roll of back side showering balance resin bed put into the unreeling structure of film coating machine and faced up, the speed of a motor vehicle of film coating machine being controlled to 10m～30m/min and making body paper tiling through each mechanism of film coating machine, and repeating step B operation;
E, polypropylene and polyethylene are dry mixed to the feeding warehouse of putting into film coating machine after closing are heated to 250 ℃～290 ℃ that it is formed is liquid, and the T-shaped extruder head that utilizes film coating machine is uniformly coated on former recto, then by temperature, be that the extruding of 20 ℃～40 ℃ composite rolls makes to be coated on the cooling film forming of liquid hybrid resin on body paper front, then utilize immediately patterned roll on film coating machine to drive away to press the decorative pattern making in patterned roll to copy to and on body paper front, form decorative pattern resin bed the rolling that thickness is 0.2～0.5mm; By film coating machine, polypropylene and polyethylene hybrid resin are fused into liquid state, recycle T-shaped extruder head hybrid resin is coated on former recto uniformly, by film, apply built-in temperature subsequently and be preferably 40 ℃ of composite rolls and push after drying and by patterned roll, drive away and press crosslinking curing to form decorative pattern resin bed again; Patterned roll is the accurate patterned roll of computer carving, is matured product on existing market, and its decorative pattern lines can be determined according to user's request.
In the present embodiment, described polypropylene is 60～80%, and polyethylene is 20～40%; Be preferably polypropylene 80%, polyethylene 20%; Because polypropylene, polyethylene are wax-like, and there is good plasticity, utilize polypropylene, polyethylene film to apply and form decorative pattern resin bed 2 and balance resin bed 3, not only can guarantee the durability of decorative pattern, also can be convenient to the sur-face peeling of release liners and leather goods.
Above-described embodiment should not be considered as limitation of the present invention, but any improvement of doing based on spirit of the present invention, all should be within protection scope of the present invention.
Claims (7)
1. a two-sided release liners, include body paper basic unit (1), on the surface of body paper basic unit (1), be provided with decorative pattern resin bed (2), it is characterized in that described decorative pattern resin bed (2) is arranged on the front of body paper basic unit (1), is provided with balance resin bed (3) at the back side of body paper basic unit (1).
2. a kind of two-sided release liners according to claim 1, is characterized in that the Substance of described body paper basic unit (1) is: 80g/m
2～150g/m
2.
3. a kind of two-sided release liners according to claim 1 and 2, is characterized in that the thickness of described decorative pattern resin bed (2) is 0.2～0.7mm.
4. a kind of two-sided release liners according to claim 1 and 2, is characterized in that the thickness of described balance resin bed (3) is 0.2～0.5mm.
5. a kind of two-sided release liners according to claim 3, is characterized in that the thickness of described balance resin bed (3) is 0.2～0.5mm.
6. the production method of a kind of two-sided release liners described in claim 1--5, is characterized in that comprising the following steps:
A, to choose be quantitatively 80g/m
2～150g/m
2, just, back side smoothness: 70～80/sec, tensile strength>=3.5KN/m
2body paper;
B, body paper paper roll is placed in the unreeling structure of film coating machine and the back side upward, the speed of a motor vehicle of film coating machine is controlled to 20m～40m/min and makes body paper tiling through each mechanism of film coating machine;
C, polypropylene and polyethylene are dry mixed to the feeding warehouse of putting into film coating machine after closing are heated to 250 ℃～290 ℃ that it is formed is liquid, and the T-shaped extruder head that utilizes film coating machine is uniformly coated on the back side of body paper, by temperature, be then that 30 ℃～40 ℃ composite rolls extruding make it be cooled to balance resin bed the rolling that thickness is 0.2～0.5mm;
D, again the body paper paper roll of back side showering balance resin bed put into the unreeling structure of film coating machine and faced up, the speed of a motor vehicle of film coating machine being controlled to 10m～30m/min and making body paper tiling through each mechanism of film coating machine;
E, polypropylene and polyethylene are dry mixed to the feeding warehouse of putting into film coating machine after closing are heated to 250 ℃～290 ℃ that it is formed is liquid, and the T-shaped extruder head that utilizes film coating machine is uniformly coated on former recto, then by temperature, be that the extruding of 20 ℃～40 ℃ composite rolls makes to be coated on the cooling film forming of resin on body paper front, then utilize immediately patterned roll on film coating machine to drive away to press the decorative pattern making in patterned roll to copy to and on body paper front, form decorative pattern resin bed the rolling that thickness is 0.2～0.7mm.
7. the production method of two-sided release liners for a kind of decorative pattern leather according to claim 6, is characterized in that described polypropylene is 60～80%, and polyethylene is 20～40%.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105795305A (en) * | 2014-12-29 | 2016-07-27 | 张维尹 | Bacteriostasis mildew-resistant fresh-keeping sheet |
| CN106192578A (en) * | 2016-07-13 | 2016-12-07 | 潍坊恒联特种纸有限公司 | A kind of leather neutral sizing and preparation technology thereof |
| CN106835846B (en) * | 2017-01-23 | 2019-02-05 | 浙江博力莫新材料科技有限公司 | A kind of release paper |
| CN109466124A (en) * | 2017-12-27 | 2019-03-15 | 宁波长阳科技股份有限公司 | A kind of release film |
| CN111485452A (en) * | 2020-03-27 | 2020-08-04 | 深圳市万极科技股份有限公司 | Release paper preparation method and release paper |
| CN111519468A (en) * | 2020-03-27 | 2020-08-11 | 深圳市万极科技股份有限公司 | Release paper preparation method and release paper |
| CN112761024A (en) * | 2020-12-30 | 2021-05-07 | 深圳市万极科技股份有限公司 | Preparation method of release paper with double-sided laminating film |
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| CN112761024A (en) * | 2020-12-30 | 2021-05-07 | 深圳市万极科技股份有限公司 | Preparation method of release paper with double-sided laminating film |
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