WO2010051757A1 - 保护膜及其加工方法 - Google Patents

保护膜及其加工方法 Download PDF

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Publication number
WO2010051757A1
WO2010051757A1 PCT/CN2009/074799 CN2009074799W WO2010051757A1 WO 2010051757 A1 WO2010051757 A1 WO 2010051757A1 CN 2009074799 W CN2009074799 W CN 2009074799W WO 2010051757 A1 WO2010051757 A1 WO 2010051757A1
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WIPO (PCT)
Prior art keywords
substrate
sensitive layer
mesh
protective film
pressure
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PCT/CN2009/074799
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English (en)
French (fr)
Inventor
朱海云
Original Assignee
Zhu Haiyun
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Publication of WO2010051757A1 publication Critical patent/WO2010051757A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B17/00—Methods preventing fouling
    • B08B17/02—Preventing deposition of fouling or of dust
    • B08B17/04—Preventing deposition of fouling or of dust by using removable coverings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/06—Interconnection of layers permitting easy separation
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
    • C09J7/38—Pressure-sensitive adhesives [PSA]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/24—Organic non-macromolecular coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/412—Transparent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/514—Oriented
    • B32B2307/518—Oriented bi-axially
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/20—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive itself
    • C09J2301/204—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive itself the adhesive coating being discontinuous
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2423/00—Presence of polyolefin
    • C09J2423/04—Presence of homo or copolymers of ethene
    • C09J2423/046—Presence of homo or copolymers of ethene in the substrate
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2423/00—Presence of polyolefin
    • C09J2423/10—Presence of homo or copolymers of propene
    • C09J2423/106—Presence of homo or copolymers of propene in the substrate
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2433/00—Presence of (meth)acrylic polymer
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2467/00—Presence of polyester
    • C09J2467/006—Presence of polyester in the substrate

Definitions

  • the present invention belongs to the technical field of surface protective films, and in particular relates to a protective film, and also relates to a method for processing such a protective film.
  • the protective film is widely used, mainly but not limited to liquid crystal display, DVD, instrumentation, diffusion sheet, light guide plate, reflective sheet, plastic case, metal mirror, refrigerator, air conditioner, washing machine, nameplate, Surface protection for stainless steel, steel profiles, aluminum alloys, color steel plates, coated panels, glass and high-end furniture.
  • the protective film shown in Figure 3 includes a substrate 1, a pressure sensitive layer 2, and a release layer 3, the substrate 1 is usually coated with a polyester film, and the pressure sensitive layer 2 is coated on one side surface of the substrate 1.
  • the release layer 3 is composited on the pressure sensitive layer 2.
  • the protective film of the above structure has the following technical problems: When ruthenium is used, after the release layer 3 is peeled off and the substrate 1 is adhered to the surface of the product by means of the pressure-sensitive layer 2, it is often on the surface of the substrate and the product. There are numerous pores distributed in the gap. However, it is precisely because the existence of the pores cannot ensure the bonding effect of the protective film on the surface of the product, and even the protective film is detached from the product. Starting from the conventional way of thinking, evenly coating one side of the surface of the substrate 1 with the pressure-sensitive layer 2 of a desired thickness can exhibit a combination with the surface of the product, and the practice has proved that this mode of thinking does not work. the reason The pores between the substrate 1 and the surface of the product cannot be eliminated.
  • the screen of the protective film and the liquid crystal display often fails to be comprehensive due to the presence of air holes and/or air bubbles.
  • the phenomenon of coincidence although the initial adhesion of the protective film appears to be coincident, but the above-mentioned situation usually occurs in the subsequent processing steps, resulting in a liquid crystal display, because the protective film needs to be permanently combined with the product. surface.
  • the uniform and uniform coating of the pressure-sensitive layer on one side surface of the substrate 1 not only fails to achieve an ideal bonding effect with the product, but also results in a large consumption of the raw material of the pressure-sensitive layer 2, and the spirit of economical conservation currently advocated.
  • the object of the present invention is to provide a protective film which can sufficiently secure the bonding effect in combination with the surface of the product and which can reasonably save the raw material for constituting the pressure sensitive layer.
  • the object of the present invention is also to provide a processing method for a protective film which can ensure that the protective film has the aforementioned effects and is simple in process.
  • the object of the present invention is to provide a protective film comprising a substrate and a pressure-sensitive layer bonded to one surface of the substrate and a release layer bonded to the pressure-sensitive layer, said pressure
  • the sensitive layer is a floating point or mesh structure.
  • a protective film comprising: a substrate and a pressure-sensitive layer bonded to one side surface of the substrate; and a release layer bonded to the other side surface of the substrate, wherein the pressure-sensitive layer is floating point or Grid-like structure.
  • the substrate has a thickness of 8 to 150 ⁇ m.
  • the material of the substrate is a polyethylene film, a polyester film, a polypropylene film or a biaxially oriented polypropylene film.
  • the pressure sensitive layer has a thickness of 2-15 ⁇ m, and the floating point or grid has a mesh number of 30-300 mesh.
  • the material of the pressure sensitive layer is oily acrylic or aqueous acrylic.
  • the release layer is a 17-fluoro-nonenyl-3 methoxysilicone film.
  • a protective film composed of a pressure sensitive layer and a substrate.
  • a method of processing a protective film comprising the steps of:
  • the selection of the qualified substrate described in the step A) means that no pinhole, no crystal point, no scratch, no wrinkle, good transparency and flatness are selected.
  • the ideal substrate; the temperature of the drying tunnel of the coating machine described in the step C) is 50-70 ° C in one zone, 80-90 ° C in the second zone, 80-110 ° C in the third zone, 60-60 in the fourth zone. At 90 ° C, the substrate traveled at a speed of 20 - 80 m/min.
  • the protective film disclosed in the present invention becomes a floating point or a grid shape due to the structure of the pressure sensitive layer bonded to the substrate, so that bubbles do not appear when adhered to a product requiring surface protection. , can fully exhibit the effect of bonding with the surface of the product; less processing steps, can ensure that the protective film has an excellent effect combined with the surface of the product.
  • FIG. 1 is a structural view showing a specific embodiment of a protective film of the present invention.
  • Figure 2 is a structural view showing another specific embodiment of the protective film of the present invention.
  • FIG. 3 is a structural diagram of still another specific embodiment of the present invention.
  • 4 is a structural diagram of still another specific embodiment of the present invention.
  • Fig. 5 is a structural view of a known protective film.
  • [26] ⁇ ) coating before coating, the surface of the substrate 1 is subjected to corona treatment, and the oily acrylic is applied to one side surface of the substrate 1 by a coating roller of a coater, wherein:
  • the surface of the applicator roll of the coating machine is configured to have a textured structure, that is, an anilox roll or a grid-like applicator roll, and the mesh is a mesh of 30 mesh.
  • the thickness of the oleic acrylic acid on the substrate 1 is 12 ⁇ m, and the thickness is controlled by adjusting the gap between the doctor blade and the rubberizing roller.
  • the oily acrylic acid is preferably, but not limited to, the mantle used by Kunshan City, Jiangsuzhou, China.
  • the product model produced and sold by Kunshan Shimei Fine Chemical Co., Ltd. is oily 204-11 or 204-12 acrylic. Through this step, a mesh with a mesh size of 30 mesh and a thickness of 12 ⁇ m is bonded to one side of the substrate 1. a coated substrate of the pressure sensitive layer 2;
  • the release paper is used as the release layer 3 to be composited on the pressure sensitive layer 2, In the roll, a protective film composed of the substrate 1, the pressure-sensitive layer 2, and the release layer 3 shown in Fig. 1 and having the pressure-sensitive layer 2 in a mesh structure was obtained.
  • the surface of the applicator roll of the coating machine is configured to have a textured structure, that is, an anilox roll or a grid-like applicator roll, and the mesh is a mesh of 300 mesh.
  • the thickness of the oily acrylic on the substrate 1 is 2 ⁇ , the thickness is controlled by adjusting the scraper
  • the oily acrylic acid is preferably, but not limited to, the mantle produced by the Kunshan Shimei Fine Chemical Co., Ltd., Kunshan City, Jiangsu province, China, in the form of oily 204-11 or 20 4 . -12 acrylic acid, through this step, a coated substrate having a mesh-shaped pressure-sensitive layer 2 having a mesh number of 300 mesh and a thickness of 2 ⁇ m is bonded to one surface of the substrate 1;
  • the release paper is used as the release layer 3 to be composited onto the pressure sensitive layer 2, In the roll, a protective film composed of the substrate 1, the pressure-sensitive layer 2, and the release layer 3 shown in Fig. 1 and having the pressure-sensitive layer 2 in a mesh structure was obtained.
  • A) Select qualified substrate 1 specifically, select no pinhole, no crystal point, no scratch damage, no wrinkle, transparency and flat polyester film as substrate 1, thickness of substrate 1 ⁇ ;
  • the network-like structure is an anilox roller or a rubberized roller having a mesh surface.
  • the mesh is the mesh of 80 mesh, and the thickness of the aqueous acrylic on the substrate 1 is 15 ⁇ m.
  • the control of the thickness is obtained by adjusting the gap between the doctor blade and the rubberizing roller.
  • the water-based acrylic acid is preferably, but not limited to, the type of the product produced and sold by Kunshan Shimei Fine Chemical Co., Ltd., Kunshan City, Jiangsu province, China.
  • the coated substrate obtained by the step ⁇ ) is introduced into the drying tunnel of the coater, wherein the traveling speed of the coated substrate is 35 m / min, and the temperature of one zone of the drying tunnel is 70 ° C, the second zone is 90 ° C, the third zone is 110 ° C, and the four zones are 90 ° C.
  • the release paper is used as the release layer 3 to be composited onto the pressure sensitive layer 2,
  • the roll is obtained as a protective film composed of the substrate 1, the pressure-sensitive layer 2, and the release layer 3, and the pressure-sensitive layer 2 has a mesh structure.
  • the mesh-like structure is a rubberized roller having a textured surface on the surface of the crucible, and the mesh is the mesh of 60 mesh, and the thickness of the oily acrylic on the substrate 1 is ⁇ , and the thickness is controlled. It is obtained by adjusting the gap between the scraper and the applicator roller.
  • the oily acrylic acid is preferably, but not limited to, the mantle produced by Kunshan Shimei Fine Chemical Co., Ltd., Kunshan City, Jiangsu province, China. 11 acrylic acid, through this step, a coated substrate having a mesh-shaped pressure-sensitive layer 2 having a mesh number of 60 mesh and a thickness of ⁇ bonded to one surface of the substrate 1 is obtained;
  • the release paper is used as the release layer 3 to be composited onto the pressure sensitive layer 2, Roll, resulting in a protective film composed of the substrate 1, the pressure sensitive layer 2, and the release layer 3 and having the pressure sensitive layer 2 in a mesh structure
  • A) Select the qualified substrate 1, specifically the selection of pinhole-free, a-grain-free, scratch-free, wrinkle-free, transparent and flat polyethylene film as the substrate 1, the thickness of the substrate 1 For 80 ⁇ ;
  • the surface of the applicator roll of the coating machine has a (processed) textured structure, that is, an anilox roll or a grid-like applicator roll, and the mesh number is 80 mesh, oily.
  • the thickness of acrylic acid on the substrate 1 is 6 ⁇ m, and the thickness is controlled by adjusting the gap between the doctor blade and the rubberizing roller.
  • the oily acrylic acid is preferably, but not limited to, the mantle used by Kunshan Stone, Kunshan City, Jiangsuzhou, China.
  • the product model produced and sold by Mei Fine Chemical Co., Ltd. is oily 204-12 acrylic acid. Through this step, a textured pressure sensitive layer 2 having a meshing number of 80 mesh and a thickness of 6 ⁇ m is bonded to one surface of the substrate 1. Coated substrate;
  • the paper is composited as the release layer 3 onto the pressure-sensitive layer 2, and wound up, and the substrate 1, the pressure-sensitive layer 2, and the release layer 3 shown in Fig. 1 are obtained, and the pressure-sensitive layer 2 is in the form of a grid. Constructed protective film.
  • A) Select a qualified substrate 1, specifically a non-pinhole, no crystal point, no scratch damage, no wrinkles, a transparent and flat polyethylene film as the substrate 1, the thickness of the substrate 1 For 80 ⁇ ;
  • the mesh-like structure is an anilox roll or a grid-like applicator roll.
  • the mesh is the mesh of 100 mesh, and the thickness of the aqueous acrylic on the substrate 1 is 13 ⁇ m. The thickness is controlled by adjusting the gap between the doctor blade and the applicator roller.
  • the water-based acrylic acid is preferably, but not limited to, the mantle produced and sold by Kunshan Shimei Fine Chemical Co., Ltd., Kunshan City, Jiangsu province, China. Water-based 701-11 acrylic acid, through which a coated substrate having a mesh-shaped pressure-sensitive layer 2 having a mesh number of 100 mesh and a thickness of 1 3 ⁇ m is bonded to one surface of the substrate 1;
  • the release paper is used as the release layer 3 to be composited onto the pressure sensitive layer 2, In the roll, a protective film composed of the substrate 1, the pressure-sensitive layer 2, and the release layer 3 shown in Fig. 1 and having the pressure-sensitive layer 2 in a mesh structure was obtained.
  • A) Select the qualified substrate 1, specifically the selection of pinhole-free, a-grain-free, scratch-free, wrinkle-free, transparent and flat polyethylene film as the substrate 1, the thickness of the substrate 1 For 150 ⁇ ;
  • the surface of the applicator roll of the coating machine is formed with a textured structure, that is, an anilox roll or a grid-like applicator roll, and the mesh is a mesh.
  • the mesh number is 160 mesh
  • the thickness of the aqueous acrylic acid on the substrate 1 is 8 ⁇ m
  • the thickness is controlled by adjusting the gap between the doctor blade and the rubberizing roller, and the aqueous acrylic acid is preferably used without limitation to the mantle.
  • the release paper is used as the release layer 3 to be composited on the pressure-sensitive layer 2, and wound up, and the substrate 1, the pressure-sensitive layer 2 and the release layer shown in Fig. 1 are obtained.
  • the pressure sensitive layer 2 is composed of three and is a protective film having a mesh structure.
  • the mesh-like structure is an anilox roll or a grid-like applicator roll.
  • the mesh is the mesh of 240 mesh, and the thickness of the aqueous acrylic on the substrate 1 is 4 ⁇ m. The thickness is controlled by adjusting the gap between the doctor blade and the applicator roller.
  • the water-based acrylic acid is preferably, but not limited to, the mantle produced and sold by Kunshan Shimei Fine Chemical Co., Ltd., Kunshan City, Jiangsu province, China. Water-based 701-11 acrylic acid, through which a coated substrate having a mesh-shaped pressure-sensitive layer 2 having a mesh number of 240 mesh and a thickness of 4 ⁇ m is bonded to one surface of the substrate 1;
  • the release paper is used as the release layer 3 to be composited onto the pressure sensitive layer 2, In the roll, a protective film composed of the substrate 1, the pressure-sensitive layer 2, and the release layer 3 shown in Fig. 1 and having the pressure-sensitive layer 2 in a mesh structure was obtained.
  • A) Selecting a qualified substrate 1 is specifically selected as a substrate 1 without a pinhole, a crystal-free point, no scratch damage, no wrinkles, transparency, and a uniform biaxially oriented polypropylene film.
  • the thickness of 1 is 40 ⁇ ;
  • [66] ⁇ ) coating before coating, the surface of the substrate 1 is subjected to corona treatment, and the aqueous acrylic acid is applied to one side surface of the substrate 1 by a coating roller of a coater, wherein:
  • the surface of the applicator roll of the coating machine is formed with a textured structure, that is, an anilox roll or a grid-like applicator roll, and the mesh has a mesh number of 20 mesh, water-based.
  • the thickness of acrylic acid on the substrate 1 is 5 ⁇ m, and the thickness is controlled by adjusting the gap between the doctor blade and the rubberizing roller.
  • the aqueous acrylic acid is preferably, but not limited to, the mantle used by Kunshan Stone, Kunshan City, Jiangsuzhou, China.
  • the product model produced and sold by Mei Fine Chemical Co., Ltd. is water-based 701-11 acrylic acid. Through this step, a textured pressure-sensitive layer 2 having a mesh number of 210 mesh and a thickness of 5 ⁇ m is bonded to one surface of the substrate 1. Coated substrate;
  • the release paper is used as the release layer 3 to be composited onto the pressure sensitive layer 2, In the roll, a protective film composed of the substrate 1, the pressure-sensitive layer 2, and the release layer 3 shown in Fig. 1 and having the pressure-sensitive layer 2 in a mesh structure was obtained.
  • A) Select the qualified substrate 1, specifically the non-pinhole, no crystal point, no scratch damage, no wrinkles, transparency and flatness of the biaxially oriented polypropylene film as the substrate 1, the substrate The thickness of 1 is 12 ⁇ ;
  • the thickness of acrylic acid on the substrate 1 is 3 ⁇ m, and the thickness is controlled by adjusting the gap between the doctor blade and the rubberizing roller.
  • the oily acrylic acid is preferably, but not limited to, the mantle used by Kunshan Stone, Kunshan City, Jiangsuzhou, China.
  • the product model produced and sold by Mei Fine Chemical Co., Ltd. is oily 204-11 or 204-12 acrylic acid.
  • a mesh-like shape with a mesh size of 250 mesh and a thickness of 3 ⁇ is bonded to one surface of the substrate 1.
  • a coated substrate of the pressure sensitive layer 2; [72] C) drying, the coated substrate obtained in step B) is introduced into the drying tunnel of the coater, wherein the traveling speed of the coated substrate is 80 m/min, and the temperature of one zone of the drying tunnel is 50°. C, the second zone is 80 ° C, the third zone is 95 ° C, and the four zones are 70 ° C.
  • the release paper is used as the release layer 3 to be composited onto the pressure sensitive layer 2,
  • a protective film composed of the substrate 1, the pressure-sensitive layer 2, and the release layer 3 shown in Fig. 1 and having the pressure-sensitive layer 2 in a mesh structure was obtained.
  • the substrate 1 shown in FIG. 2 can be obtained.
  • the pressure sensitive layer 2 and the release layer 3 are formed and the pressure sensitive layer 2 is a protective film of a floating point structure.
  • the release layer 4 is 17-fluoro-nonenyl-3 methoxysilane (also It is called heptafluorodecyltrimethoxysilane);
  • [77] ⁇ ) coating before coating, the surface of the substrate 1 is subjected to corona treatment, and the oily acrylic is applied to the other side surface of the substrate 1 by a coating roller of a coater, wherein:
  • the surface of the applicator roll of the coating machine is formed with a textured structure, that is, an anilox roll or a grid-like applicator roll, and the mesh number is 30 mesh, oily.
  • the thickness of acrylic acid on the substrate 1 is 15 ⁇ m, and the thickness is controlled by adjusting the gap between the doctor blade and the rubberizing roller.
  • the oily acrylic acid is preferably, but not limited to, the mantle used by Kunshan Stone, Kunshan City, Jiangsuzhou, China.
  • the product model produced and sold by Mei Fine Chemical Co., Ltd. is oily 204-11 or 204-12 acrylic acid. Through this step, a mesh-like shape with a mesh size of 30 mesh and a thickness of 15 ⁇ m is bonded to one surface of the substrate 1. a coated substrate of the pressure sensitive layer 2;
  • the coated substrate obtained by the step ⁇ ) is introduced into the drying tunnel of the coater, wherein the traveling speed of the coated substrate is 40 m/min, and the temperature of one zone of the drying tunnel is 60°. C, the second zone is 88 ° C, the three zones are 100 ° C, the four zones are 90 ° C, and the roll is rolled out, and the side of the substrate 1 shown in FIG. 2 is obtained as the release layer 4, and The other side is a pressure sensitive layer 2 and the pressure sensitive layer 2 is a protective film having a mesh structure.
  • step A) Only the substrate 1 in step A) was changed to a polyethylene film, the thickness of the substrate 1 was changed to 50 ⁇ m ; the mesh of the step ⁇ ) was changed to 60 mesh, and the aqueous acrylic was on the substrate 1 The thickness of the upper layer was changed to ⁇ ; the traveling speed of the coated substrate in step C) was changed to 55 m/min, and the temperature of one to four zones of the drying tunnel was changed to 60 ° C, 80 ° C, 80 ° C, respectively. The same applies to the description of Example 11 at 60 °C.
  • step A) Only the substrate 1 in step A) was changed to a polyethylene film, the thickness of the substrate 1 was changed to 80 ⁇ m ; the mesh number in the step ⁇ ) was changed to 80 mesh, and the oily acrylic was on the substrate 1 The thickness of the upper layer is changed to 13 ⁇ ; the traveling speed of the coated substrate in step C) is changed to 75m/min, and the temperature of one to four zones of the drying tunnel is changed to 65°C, 80°C, 80°C respectively. The same applies to the description of Example 11 at 60 °C.
  • step A) Only the substrate 1 in step A) was changed to a polyethylene film, the thickness of the substrate 1 was changed to 150 ⁇ m ; the mesh number in the step ⁇ ) was changed to 100 mesh, and the oily acrylic was on the substrate 1 The thickness of the upper layer was changed to ⁇ ; the traveling speed of the coated substrate in step C) was changed to 30 m/min, and the temperature of one to four zones of the drying tunnel was changed to 70 °C, 80 °C, 90 °C, respectively. 68 ° C, the rest are the same as the description of Example 11.
  • step A) Only the substrate 1 in the step A) was changed to a polyethylene film, and the thickness of the substrate 1 was changed to 125 ⁇ m ; the number of meshes in the step ⁇ was changed to 240 mesh, and the thickness of the aqueous acrylic on the substrate 1 was changed. For 4 ⁇ ; step C) The traveling speed of the coated substrate was changed to 25 m/min, and the temperatures of one to four zones of the drying tunnel were changed to 55 ° C and 80, respectively. C, 100. C, 75. C, the rest are the same as the description of Embodiment 13.
  • step A) Only the substrate 1 in step A) was changed to a polyethylene film, the thickness of the substrate 1 was changed to 36 ⁇ m ; the number of meshes in the step ⁇ ) was changed to 160 mesh, and the aqueous acrylic was on the substrate 1 The thickness of the upper layer was changed to 4 ⁇ ; the traveling speed of the coated substrate in step C) was changed to 20m/min, and the temperature of one to four zones of the drying tunnel was changed to 70°C, 80°C, 96°C, respectively. 65 ° C, the rest are the same as the description of Example 13.
  • step A) Only the substrate 1 in step A) was changed to a biaxially oriented polypropylene film, and the thickness of the substrate 1 was changed to 40 ⁇ m ; the number of meshes in the step ⁇ ) was changed to 210 mesh, and the aqueous acrylic acid was The thickness on the substrate 1 was changed to 5 ⁇ m ; the traveling speed of the coated substrate in the step C) was changed to 75 m/min, and the temperatures in one to four zones of the drying tunnel were changed to 55 ° C and 86 ° C, respectively. The same applies to the description of Example 13 at 105 ° C and 80 ° C.
  • step A) Only the substrate 1 in step A) was changed to a stretched polypropylene film, and the thickness of the substrate 1 was changed to 12 ⁇ m ; the number of meshes in the step ⁇ ) was changed to 250 mesh, and the oily acrylic acid was used in the base.
  • the thickness of the material 1 was changed to 3 ⁇ m ; the traveling speed of the coated substrate in the step C) was changed to 80 m/min, and the temperatures of one to four zones of the drying tunnel were changed to 50 ° C, 80 ° C, respectively. 95 ° C, 70 ° C, the rest are the same as described in Example 11.

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Description

说明书
Title of Invention:保护膜及其加工方法 技术领域
技术领域
[1] 本发明属于表面防护膜技术领域， 具体涉及一种保护膜， 并且还涉及该种保护 膜的加工方法。
背景技术
背景技术
[2] 保护膜的用途十分广泛， 主要但不限于地应用于对液晶显示屏、 DVD、 仪器仪 表、 扩散片、 导光板、 反射片、 塑胶外壳、 五金镜面、 冰箱、 空调、 洗衣机、 铭牌、 不锈钢、 塑钢型材、 铝合金、 彩钢板、 涂装板、 玻璃和高档家俱等的表 面防护。
[3] 先前， 人们对上述产品的表面保护所釆取的措施是： 用防尘辊滚擦， 缺点是不 能保障擦净效果； 防尘辊滚擦容易伤及产品表面； 属于被动式防护， 因为尘杂 等已经沾及产品的表面， 在滚擦吋尘杂与产品表面的摩擦加剧， 给产品造成两 次伤害。
[4] 随着人们对产品例如上面举及的产品表面的防护要求的日益严苛， 不允许在产 品启用前表面沾有尘杂， 因此通常釆用由图 3所示的保护膜贴附于产品的表面， 图 5所示的保护膜包括基材 1、 压敏层 2和离型层 3， 基材 1通常釆用聚酯薄膜， 压 敏层 2涂布在基材 1的一侧表面， 离型层 3复合在压敏层 2上。 当要使用吋， 只要 揭除通常为离型纸的离型层 3， 借助于由压敏胶作为压敏层 2使基材 1贴附到产品 的表面。 对产品的表面实施保护。 但是， 上述结构的保护膜存在着下述技术问 题： 当使用吋， 在揭除离型层 3使基材 1借助于压敏层 2粘附于产品表面后， 往往 在基材与产品表面之间表现出无数散在分布的气孔， 然而， 正是由于气孔的存 在不能确保保护膜与产品表面的结合效果， 甚至会导致保护膜从产品上脱落。 从常规的思维方式出发， 对基材 1的一侧表面均匀涂布所需厚度的压敏层 2， 便 能体现出与产品表面的结合效果， 而实践证明这种思维方式并不能奏效。 原因 在于基材 1与产品表面之间的气孔无法消除， 以加工手机或电脑的液晶显示屏为 例， 由于气孔和 /或气泡的存在， 保护膜与液晶显示屏的屏面往往会出现未能全 面重合的现象， 尽管在初始粘贴保护膜吋表现为重合， 但在后道的加工工序中 通常出现前述情形， 导致液晶显示屏疵品， 因为保护膜随该类产品出荷吋需要 持久地结合在产品表面。 而且对基材 1的一侧表面全面而均匀地涂布压敏层不仅 起不到与产品的理想结合效果， 而且还导致压敏层 2的原料消耗大， 与目前崇尚 的节约型经济的精神相悖。
对发明的公开
技术问题
[5] 本发明的任务是要提供一种能充分保障与产品表面相结合的结合效果并且还能 合理地节约用于构成压敏层的原料的保护膜。
[6] 本发明的任务还在于提供一种保护膜的加工方法， 该方法能保障保护膜具有前 述的效果并且工艺简单。
技术解决方案
[7] 本发明的任务是这样来完成的， 一种保护膜， 由基材和结合在基材一侧表面的 压敏层以及结合在压敏层上的离型层构成， 所述的压敏层为浮点状或网格状构 造。
[8] —种保护膜， 由基材和结合在基材的一侧表面的压敏层以及结合在基材的另一 侧表面的防粘层， 所述的压敏层为浮点状或网格状构造。
[9] 在本发明的一个具体的实施例中， 所述的基材的厚度为 8— 150 μ ηι。
[10] 在本发明的另一个具体的实施例中， 所述的基材的材料为聚乙烯薄膜、 聚酯薄 膜、 聚丙烯薄膜或双向拉伸聚丙烯薄膜。
[11] 在本发明的还一个具体的实施例中， 所述的压敏层的厚度为 2— 15 μ ηι， 所述 的浮点或网格的目数为 30— 300目。
[12] 在本发明的又一个具体的实施例中， 所述的压敏层的材料为油性丙烯酸或水性 丙烯酸。
[13] 在本发明的再一个具体的实施例中， 所述的防粘层为 17-氟 -癸烯基 -3甲氧基 硅垸皮膜。 [14] 一种保护膜的加工方法， 它包括以下步骤：
A)选取合格的基材；
B)涂布， 先对基材的表面进行电晕处理， 再用表面具有浮点状或网纹状构造的 涂胶辊将压敏胶料涂布到基材的一侧表面， 得到一侧表面具有浮点状或网纹状 结构的压敏层的涂布基材；
C)烘干， 将一侧表面具有浮点状或网纹状结构的压敏层的涂布基材引入涂布机 的烘道， 在出烘道并经冷却后将离型层复合到压敏层上， 收卷， 得到由离型层
、 压敏层和基材所构成的保护膜。
[15] 一种保护膜的加工方法， 它包括以下步骤：
A)选取合格的并且在一侧表面预先结合有防粘层的基材；
B)涂布， 先对基材的表面进行电晕处理， 再用表面具有浮点状或网纹状构造的 涂胶辊将压敏胶料涂布到基材的另一侧表面， 得到一侧具有防粘层而另一侧具 有浮点状或网纹状结构的压敏层的涂布基材；
C)烘干， 将步骤 B)所得到的涂布基材引入涂布机的烘道， 出烘道后收卷， 得到 由压敏层、 防粘层和基材所构成的保护膜。
[16] 在本发明的更而一个具体的实施例中， 步骤 A)中所述的选取合格基材是指选取 无针孔、 无晶点、 无擦伤、 无皱褶、 透明度好和平整度理想的基材； 步骤 C)中 所述的涂布机的烘道的温度为一区 50— 70°C， 二区 80— 90°C， 三区 80— 110°C， 四区 60— 90°C， 所涂基材的行进速度为 20 - 80m/min。
有益效果
[17] 本发明所公开的保护膜由于对结合于基材上的压敏层的结构变为浮点状或网格 状， 因此当粘附到需要表面保护的产品上后， 不会出现气泡， 能充分地表现出 与产品表面的结合效果； 加工方法步骤少， 能保障保护膜具有优异的与产品表 面相结合的效果。
附图说明
[18] 图 1为本发明保护膜的一种具体的实施例结构图。
[19] 图 2为本发明保护膜的另一种具体的实施例结构图。
[20] 图 3为本发明还一种具体的实施例结构图。 [21] 图 4为本发明的再一种具体的实施例结构图。
[22] 图 5为公知的保护膜的结构图。
本发明的实施方式
[23] 实施例 1
[24] 请见图 1。
[25] A)选取合格的基材 1， 具体是选取无针孔、 无晶点、 无划擦损伤、 无皱褶、 透 明度好和平整的聚酯薄膜作为基材 1， 基材 1的厚度为 75 μ ηι;
[26] Β)涂布， 在涂布前， 先对基材 1的表面进行电晕处理， 用涂布机的涂胶辊将油 性丙烯酸涂布到基材 1的一侧表面， 其中： 所述的涂布机的涂胶辊的表面构成 有 （加工有） 网纹状的构造即为釆用网纹辊或称网格状的涂胶辊， 网纹即网格 的目数为 30目， 油性丙烯酸在基材 1上的厚度 12μηι， 该厚度的控制是通过调整刮 刀与涂胶辊之间的间隙来获得的， 所述的油性丙烯酸优选而非限于地釆用由中 国江苏省昆山市昆山石梅精细化工有限公司生产销售的产品型号为油性 204-11或 204-12丙烯酸， 经由本步骤而得到在基材 1的一侧表面结合有目数为 30目的并且 厚度为 12μηι的网纹状的压敏层 2的涂布基材；
[27] C)烘干， 将由步骤 Β)所得到的涂布基材引入涂布机的烘道， 其中， 涂布基材的 行进速度为 40m /min， 烘道的一区温度为 60 °C， 二区为 88 °C， 三区为 100 °C， 四区为 90 °C， 在出烘道并经冷却后， 用离型纸作为离型层 3复合到压敏层 2上， 收卷， 得到图 1所示的由基材 1、 压敏层 2和离型层 3所构成的并且压敏层 2为网格 状构造的保护膜。
[28] 实施例 2
[29] 请见图 1。
[30] A)选取合格的基材 1， 具体是选取无针孔、 无晶点、 无划擦损伤、 无皱褶、 透 明度好和平整的聚酯薄膜作为基材 1， 基材 1的厚度为 8μηι;
[31] Β)涂布， 在涂布前， 先对基材 1的表面进行电晕处理， 用涂布机的涂胶辊将油 性丙烯酸涂布到基材 1的一侧表面， 其中： 所述的涂布机的涂胶辊的表面构成有 (加工有） 网纹状的构造即为釆用网纹辊或称网格状的涂胶辊， 网纹即网格的 目数为 300目， 油性丙烯酸在基材 1上的厚度 2μηι， 该厚度的控制是通过调整刮刀 与涂胶辊之间的间隙来获得的， 所述的油性丙烯酸优选而非限于地釆用由中国 江苏省昆山市昆山石梅精细化工有限公司生产销售的产品型号为油性 204-11或 20 4-12丙烯酸， 经由本步骤而得到在基材 1的一侧表面结合有目数为 300目的并且厚 度为 2μηι的网纹状的压敏层 2的涂布基材；
[32] C)烘干， 将由步骤 Β)所得到的涂布基材引入涂布机的烘道， 其中， 涂布基材的 行进速度为 60m/min， 烘道的一区温度为 50°C， 二区为 85°C， 三区为 100°C， 四 区为 65°C， 在出烘道并经冷却后， 用离型纸作为离型层 3复合到压敏层 2上， 收卷 ， 得到图 1所示的由基材 1、 压敏层 2和离型层 3所构成的并且压敏层 2为网格状构 造的保护膜。
[33] 实施例 3
[34] 请见图 1。
[35] A)选取合格的基材 1， 具体是选取无针孔、 无晶点、 无划擦损伤、 无皱褶、 透 明度好和平整的聚酯薄膜作为基材 1， 基材 1的厚度为 ΙΟΟμηι;
[36] Β)涂布， 在涂布前， 先对基材 1的表面进行电晕处理， 用涂布机的涂胶辊将水 性丙烯酸涂布到基材 1的一侧表面， 其中： 所述的涂布机的涂胶辊的表面构成有
(加工有） 网络状的构造即为釆用网纹辊或称表面具有网格状的涂胶辊， 网纹 即网格的目数为 80目， 水性丙烯酸在基材 1上的厚度 15μηι， 该厚度的控制是通过 调整刮刀与涂胶辊之间的间隙来获得的， 所述的水性丙烯酸优选而非限于地釆 用由中国江苏省昆山市昆山石梅精细化工有限公司生产销售的产品型号为水性 7 01-11丙烯酸， 经由本步骤而得到在基材 1的一侧表面结合有目数为 80目的并且厚 度为 15μηι的网目状的压敏层 2的涂布基材；
[37] C)烘干， 将由步骤 Β)所得到的涂布基材引入涂布机的烘道， 其中， 涂布基材的 行进速度为 35m /min， 烘道的一区温度为 70°C， 二区为 90°C， 三区为 110°C， 四 区为 90°C， 在出烘道并经冷却后， 用离型纸作为离型层 3复合到压敏层 2上， 收卷 ， 得到由基材 1、 压敏层 2和离型层 3所构成的并且压敏层 2为网格状构造的保护 膜。
[38] 实施例 4
[39] 请见图 1。 [40] A)选取合格的基材 1， 具体是选取无针孔、 无晶点、 无划擦损伤、 无皱褶、 透 明度好和平整的聚乙烯薄膜作为基材 1， 基材 1的厚度为 50μηι;
[41] Β)涂布， 在涂布前， 先对基材 1的表面进行电晕处理， 用涂布机的涂胶辊将油 性丙烯酸涂布到基材 1的一侧表面， 其中： 所述的涂布机的涂胶辊的表面构成有
(加工有） 网纹状的构造即为釆用表面具有网纹状的涂胶辊， 网纹即网格的目 数为 60目， 油性丙烯酸在基材 1上的厚度 ΙΟμηι, 该厚度的控制是通过调整刮刀与 涂胶辊之间的间隙来获得的， 所述的油性丙烯酸优选而非限于地釆用由中国江 苏省昆山市昆山石梅精细化工有限公司生产销售的产品型号为油性 204-11丙烯酸 ， 经由本步骤而得到在基材 1的一侧表面结合有目数为 60目的并且厚度为 ΙΟμηι的 网目状的压敏层 2的涂布基材；
[42] C)烘干， 将由步骤 Β)所得到的涂布基材引入涂布机的烘道， 其中， 涂布基材的 行进速度为 55m/min， 烘道的一区温度为 60°C， 二区为 80°C， 三区为 80°C， 四区 为 60°C， 在出烘道并经冷却后， 用离型纸作为离型层 3复合到压敏层 2上， 收卷， 得到由基材 1、 压敏层 2和离型层 3所构成的并且压敏层 2为网格状构造的保护膜
[43] 实施例 5
[44] 请见图 1 。
[45] A)选取合格的基材 1， 具体是选取无针孔、 无晶点、 无划擦损伤、 无皱褶、 透 明度好和平整的聚乙烯薄膜作为基材 1， 基材 1的厚度为 80μηι;
[46] Β)涂布， 在涂布前， 先对基材 1的表面进行电晕处理， 用涂布机的涂胶辊将油 性丙烯酸涂布到基材 1的一侧表面， 其中： 所述的涂布机的涂胶辊的表面构成有 (加工有） 网纹状的构造即为釆用网纹辊或称网格状的涂胶辊， 网纹的目数为 8 0目， 油性丙烯酸在基材 1上的厚度 6μηι， 该厚度的控制是通过调整刮刀与涂胶辊 之间的间隙来获得的， 所述的油性丙烯酸优选而非限于地釆用由中国江苏省昆 山市昆山石梅精细化工有限公司生产销售的产品型号为油性 204-12丙烯酸， 经由 本步骤而得到在基材 1的一侧表面结合有目数为 80目的并且厚度为 6μηι的网纹状 的压敏层 2的涂布基材；
[47] C)烘干， 将由步骤 Β)所得到的涂布基材引入涂布机的烘道， 其中， 涂布基材的 行进速度为 75m/min， 烘道的一区温度为 65°C， 二区为 80°C， 三区为 80°C， 四区 为 60°C， 在出烘道并经冷却后， 用离型纸作为离型层 3复合到压敏层 2上， 收卷， 得到图 1所示的由基材 1、 压敏层 2和离型层 3所构成的并且压敏层 2为网格状构造 的保护膜。
[48] 实施例 6
[49] 请见图 1。
[50] A)选取合格的基材 1， 具体是选取无针孔、 无晶点、 无划擦损伤、 无皱褶、 透 明度好和平整的聚乙烯薄膜作为基材 1， 基材 1的厚度为 80μηι;
[51] Β)涂布， 在涂布前， 先对基材 1的表面进行电晕处理， 用涂布机的涂胶辊将水 性丙烯酸涂布到基材 1的一侧表面， 其中： 所述的涂布机的涂胶辊的表面构成有
(加工有） 网纹状的构造即为釆用网纹辊或称网格状的涂胶辊， 网纹即网格的 目数为 100目， 水性丙烯酸在基材 1上的厚度 13μηι， 该厚度的控制是通过调整刮 刀与涂胶辊之间的间隙来获得的， 所述的水性丙烯酸优选而非限于地釆用由中 国江苏省昆山市昆山石梅精细化工有限公司生产销售的产品型号为水性 701-11丙 烯酸， 经由本步骤而得到在基材 1的一侧表面结合有目数为 100目的并且厚度为 1 3μηι的网纹状的压敏层 2的涂布基材；
[52] C)烘干， 将由步骤 Β)所得到的涂布基材引入涂布机的烘道， 其中， 涂布基材的 行进速度为 30m/min， 烘道的一区温度为 70°C， 二区为 80°C， 三区为 90°C， 四区 为 63°C， 在出烘道并经冷却后， 用离型纸作为离型层 3复合到压敏层 2上， 收卷， 得到图 1所示的由基材 1、 压敏层 2和离型层 3所构成的并且压敏层 2为网格状构造 的保护膜。
[53] 实施例 7
[54] 请见图 1。
[55] A)选取合格的基材 1， 具体是选取无针孔、 无晶点、 无划擦损伤、 无皱褶、 透 明度好和平整的聚乙烯薄膜作为基材 1， 基材 1的厚度为 150μηι;
[56] Β)涂布， 在涂布前， 先对基材 1的表面进行电晕处理， 用涂布机的涂胶辊将水 性丙烯酸涂布到基材 1的一侧表面， 其中： 所述的涂布机的涂胶辊的表面构成有 (加工有） 网纹状的构造即为釆用网纹辊或称网格状的涂胶辊， 网纹即网格的 目数为 160目， 水性丙烯酸在基材 1上的厚度 8μηι， 该厚度的控制是通过调整刮刀 与涂胶辊之间的间隙来获得的， 所述的水性丙烯酸优选而非限于地釆用由中国 江苏省昆山市昆山石梅精细化工有限公司生产销售的产品型号为水性 701-11丙烯 酸， 经由本步骤而得到在基材 1的一侧表面结合有目数为 160目的并且厚度为 8μηι 的网纹状的压敏层 2的涂布基材；
[57] C)烘干， 将由步骤 Β)所得到的涂布基材引入涂布机的烘道， 其中， 涂布基材的 行进速度为 20m/min， 烘道的一区温度为 70°C， 二区为 80°C， 三区为 90°C， 四区 为 65。C， 在出烘道并经冷却后， 用离型纸作为离型层 3复合到压敏层 2上， 收卷， 得到图 1所示的由基材 1、 压敏层 2和离型层 3所构成的并且压敏层 2为网格状构造 的保护膜。
[58] 实施例 8
[59] 请见图 1 。
[60] A)选取合格的基材 1， 具体是选取无针孔、 无晶点、 无划擦损伤、 无皱褶、 透 明度好和平整的聚丙烯薄膜作为基材 1， 基材 1的厚度为 36μηι;
[61] Β)涂布， 在涂布前， 先对基材 1的表面进行电晕处理， 用涂布机的涂胶辊将水 性丙烯酸涂布到基材 1的一侧表面， 其中： 所述的涂布机的涂胶辊的表面构成有
(加工有） 网纹状的构造即为釆用网纹辊或称网格状的涂胶辊， 网纹即网格的 目数为 240目， 水性丙烯酸在基材 1上的厚度 4μηι， 该厚度的控制是通过调整刮刀 与涂胶辊之间的间隙来获得的， 所述的水性丙烯酸优选而非限于地釆用由中国 江苏省昆山市昆山石梅精细化工有限公司生产销售的产品型号为水性 701-11丙烯 酸， 经由本步骤而得到在基材 1的一侧表面结合有目数为 240目的并且厚度为 4μηι 的网纹状的压敏层 2的涂布基材；
[62] C)烘干， 将由步骤 Β)所得到的涂布基材引入涂布机的烘道， 其中， 涂布基材的 行进速度为 25m/min， 烘道的一区温度为 55°C， 二区为 80°C， 三区为 100°C， 四 区为 75°C， 在出烘道并经冷却后， 用离型纸作为离型层 3复合到压敏层 2上， 收卷 ， 得到图 1所示的由基材 1、 压敏层 2和离型层 3所构成的并且压敏层 2为网格状构 造的保护膜。
[63] 实施例 9 [64] 请见图 1。
[65] A)选取合格的基材 1， 具体是选取无针孔、 无晶点、 无划擦损伤、 无皱褶、 透 明度好和平整的双向拉伸聚丙烯薄膜作为基材 1， 基材 1的厚度为 40μηι;
[66] Β)涂布， 在涂布前， 先对基材 1的表面进行电晕处理， 用涂布机的涂胶辊将水 性丙烯酸涂布到基材 1的一侧表面， 其中： 所述的涂布机的涂胶辊的表面构成有 (加工有） 网纹状的构造即为釆用网纹辊或称网格状的涂胶辊， 网格的目数为 2 10目， 水性丙烯酸在基材 1上的厚度 5μηι， 该厚度的控制是通过调整刮刀与涂胶 辊之间的间隙来获得的， 所述的水性丙烯酸优选而非限于地釆用由中国江苏省 昆山市昆山石梅精细化工有限公司生产销售的产品型号为水性 701-11丙烯酸， 经 由本步骤而得到在基材 1的一侧表面结合有目数为 210目的并且厚度为 5μηι的网纹 状的压敏层 2的涂布基材；
[67] C)烘干， 将由步骤 Β)所得到的涂布基材引入涂布机的烘道， 其中， 涂布基材的 行进速度为 75m/min， 烘道的一区温度为 55°C， 二区为 86°C， 三区为 100°C， 四 区为 75°C， 在出烘道并经冷却后， 用离型纸作为离型层 3复合到压敏层 2上， 收卷 ， 得到图 1所示的由基材 1、 压敏层 2和离型层 3所构成的并且压敏层 2为网格状构 造的保护膜。
[68] 实施例 10
[69] 请见图 1。
[70] A)选取合格的基材 1， 具体是选取无针孔、 无晶点、 无划擦损伤、 无皱褶、 透 明度好和平整的双向拉伸聚丙烯薄膜作为基材 1， 基材 1的厚度为 12μηι;
[71] Β)涂布， 在涂布前， 先对基材 1的表面进行电晕处理， 用涂布机的涂胶辊将油 性丙烯酸涂布到基材 1的一侧表面， 其中： 所述的涂布机的涂胶辊的表面构成有 (加工有） 网纹状的构造即为釆用网纹辊或称网格状的涂胶辊， 网格的目数为 2 50目， 油性丙烯酸在基材 1上的厚度 3μηι， 该厚度的控制是通过调整刮刀与涂胶 辊之间的间隙来获得的， 所述的油性丙烯酸优选而非限于地釆用由中国江苏省 昆山市昆山石梅精细化工有限公司生产销售的产品型号为油性 204-11或 204-12丙 烯酸， 经由本步骤而得到在基材 1的一侧表面结合有目数为 250目的并且厚度为 3 μηι的网纹状的压敏层 2的涂布基材； [72] C)烘干， 将由步骤 B)所得到的涂布基材引入涂布机的烘道， 其中， 涂布基材的 行进速度为 80m/min， 烘道的一区温度为 50°C， 二区为 80°C， 三区为 95°C， 四区 为 70°C， 在出烘道并经冷却后， 用离型纸作为离型层 3复合到压敏层 2上， 收卷， 得到图 1所示的由基材 1、 压敏层 2和离型层 3所构成的并且压敏层 2为网格状构造 的保护膜。
[73] 请见图 2， 只要将上述实施例 1-10中所述的涂胶辊分别改用表面具有浮点状构 造的涤胶辊， 那么便可得到图 2所示的由基材 1、 压敏层 2和离型层 3所构成的并 且压敏层 2为浮点状构造的保护膜。
[74] 实施例 11
[75] 请见图 3。
[76] A)选取合格的基材 1， 具体是选取无针孔、 无晶点、 无划擦损伤、 无皱褶、 透 明度好和平整的聚酯薄膜作为基材 1， 基材 1的厚度为 75μηι， 其中， 在基材 1的一 侧表面本身结合有防粘层 4， 这种在市场购入吋已经结合有防粘层 4的基材 1优选 购自由中国江苏省常熟市富邦胶带有限公司按该公司的中国发明专利申请公幵 号为 CN1821286A实施而得到的产品型号为 YZC-B离形膜， 防粘层 4为 17-氟 -癸烯 基 -3甲氧硅垸 （也称十七氟癸基三甲氧基硅垸） ；
[77] Β)涂布， 在涂布前， 先对基材 1的表面进行电晕处理， 用涂布机的涂胶辊将油 性丙烯酸涂布到基材 1的另一侧表面， 其中： 所述的涂布机的涂胶辊的表面构成 有 （加工有） 网纹状的构造即为釆用网纹辊或称网格状的涂胶辊， 网格的目数 为 30目， 油性丙烯酸在基材 1上的厚度 15μηι， 该厚度的控制是通过调整刮刀与 涂胶辊之间的间隙来获得的， 所述的油性丙烯酸优选而非限于地釆用由中国江 苏省昆山市昆山石梅精细化工有限公司生产销售的产品型号为油性 204-11或 204- 12丙烯酸， 经由本步骤而得到在基材 1的一侧表面结合有目数为 30目的并且厚度 为 15μηι的网纹状的压敏层 2的涂布基材；
[78] C)烘干， 将由步骤 Β)所得到的涂布基材引入涂布机的烘道， 其中， 涂布基材的 行进速度为 40m/min， 烘道的一区温度为 60°C， 二区为 88°C， 三区为 100°C， 四 区为 90°C， 在出烘吋收卷， 得到由图 2所示的基材 1的一侧为防粘层 4， 而另一侧 为压敏层 2所构成的并且压敏层 2为网格状构造的保护膜。 [80] 仅将步骤 A) 中的基材 1的厚度改为 8μηι; 将步骤 Β) 中的网格的目数改为 300目 ， 油性丙烯酸在基材 1上的厚度改为 2μηι; 将步骤 C) 中的涂布基材的行进速度 改为 60m/min， 烘道的一区至四区的温度分别改为 50°C、 85°C、 100°C、 65°C, 其 余均同对实施例 11的描述。
[81] 实施例 13
[82] 仅将步骤 A) 中的基材 1的厚度改为 ΙΟΟμηι; 将步骤 Β) 中的网格的目数改为 80 目， 将油性丙烯酸改用型号为 701-11的水性丙烯酸， 在基材 1上的厚度改为 15μηι ； 将步骤 C) 中的涂布基材的行进速度改为 35m/min， 烘道的一区至四区的温度 分别改为 70°C、 90°C、 110°C、 90°C， 其余均同对实施例 11的描述。
[83] 实施例 14
[84] 仅将步骤 A) 中的基材 1改用聚乙烯薄膜， 基材 1的厚度改为 50μηι; 将步骤 Β) 中的网格的目数改为 60目， 水性丙烯酸在基材 1上的厚度改为 ΙΟμηι; 将步骤 C) 中的涂布基材的行进速度改为 55m/min， 烘道的一区至四区的温度分别改为 60°C 、 80°C、 80°C、 60°C, 其余均同对实施例 11的描述。
[85] 实施例 15
[86] 仅将步骤 A) 中的基材 1改用聚乙烯薄膜， 基材 1的厚度改为 80μηι; 将步骤 Β) 中的网纹的目数改为 80目， 油性丙烯酸在基材 1上的厚度改为 13μηι; 将步骤 C) 中的涂布基材的行进速度改为 75m/min， 烘道的一区至四区的温度分别改为 65°C 、 80°C、 80°C、 60°C, 其余均同对实施例 11的描述。
[87] 实施例 16
[88] 仅将步骤 A) 中的基材 1改用聚乙烯薄膜， 基材 1的厚度改为 150μηι; 将步骤 Β) 中的网纹的目数改为 100目， 油性丙烯酸在基材 1上的厚度改为 ΙΟμηι; 将步骤 C ) 中的涂布基材的行进速度改为 30m/min， 烘道的一区至四区的温度分别改为 70 °C、 80°C、 90°C、 68°C, 其余均同对实施例 11的描述。
[89] 实施例 17
仅将步骤 A) 中的基材 1改用聚乙烯薄膜， 基材 1的厚度改为 125μηι; 将步骤 Β 中的网纹的目数改为 240目， 水性丙烯酸在基材 1上的厚度改为 4μηι; 将步骤 C) 中的涂布基材的行进速度改为 25m/min， 烘道的一区至四区的温度分别改为 55°C 、 80。C、 100。C、 75。C， 其余均同对实施例 13的描述。
实施例 18
[92] 仅将步骤 A) 中的基材 1改用聚乙烯薄膜， 基材 1的厚度改为 36μηι; 将步骤 Β) 中的网纹的目数改为 160目， 水性丙烯酸在基材 1上的厚度改为 4μηι; 将步骤 C) 中的涂布基材的行进速度改为 20m/min， 烘道的一区至四区的温度分别改为 70°C 、 80°C、 96°C、 65°C , 其余均同对实施例 13的描述。
[93] 实施例 19
[94] 仅将步骤 A) 中的基材 1改用双向拉伸聚丙烯薄膜， 基材 1的厚度改为 40μηι; 将 步骤 Β) 中的网纹的目数改为 210目， 水性丙烯酸在基材 1上的厚度改为 5μηι; 将 步骤 C) 中的涂布基材的行进速度改为 75m/min， 烘道的一区至四区的温度分别 改为 55°C、 86°C、 105°C、 80°C， 其余均同对实施例 13的描述。
[95] 实施例 20
[96] 仅将步骤 A) 中的基材 1改用拉伸聚丙烯薄膜， 基材 1的厚度改为 12μηι; 将步骤 Β) 中的网纹的目数改为 250目， 油性丙烯酸在基材 1上的厚度改为 3μηι; 将步骤 C) 中的涂布基材的行进速度改为 80m/min， 烘道的一区至四区的温度分别改为 5 0°C、 80°C、 95°C、 70°C , 其余均同对实施例 1 1的描述。
[97] 请见图 4， 只要将上述实施例 1 1-20中所述的网格状构造的涂胶辊改用表面具有 浮点状构造的涂胶辊， 那么便可得到相应的基材 1的一侧为防粘层 4， 而另一侧 为压敏层 2所构成的并且压敏层 2为浮点状构造的保护膜。

Claims

权利要求书
一种保护膜， 其特征在于由基材 (1)和结合在基材 (1)一侧表面的压 敏层 (2)以及结合在压敏层 (2)上的离型层 (3)构成， 所述的压敏层 (2) 为浮点状或网格状构造。
一种保护膜， 其特征在于由基材 (1)和结合在基材 (1)的一侧表面的 压敏层 (2)以及结合在基材 (1)的另一侧表面的防粘层 (4)， 所述的压 敏层 为浮点状或网格状构造。
根据权利要求 1或 2所述的保护膜， 其特征在于所述的基材 (1)的厚 度为 8— 150μηι。
根据权利要求 3所述的保护膜， 其特征在于所述的基材 (1)的材料为 聚乙烯薄膜、 聚酯薄膜、 聚丙烯薄膜或双向拉伸聚丙烯薄膜。 根据权利要求 1或 2所述的保护膜， 其特征在于所述的压敏层 (2)的 厚度为 2— 15μηι， 所述的浮点或网格的目数为 30— 300目。
根据权利要求 5所述的保护膜， 其特征在于所述的压敏层 (2)的材料 为油性丙烯酸或水性丙烯酸。
根据权利要求 2所述的保护膜， 其特征在于所述的防粘层 (4)为 17- 氟-癸烯基 -3甲氧基硅垸皮膜。
一种如权利要求 1所述的保护膜的加工方法， 其特征在于它包括以 下步骤：
Α)选取合格的基材；
Β)涂布， 先对基材的表面进行电晕处理， 再用表面具有浮点状或 网纹状构造的涂胶辊将压敏胶料涂布到基材的一侧表面， 得到一 侧表面具有浮点状或网纹状结构的压敏层的涂布基材；
C)烘干， 将一侧表面具有浮点状或网纹状结构的压敏层的涂布基 材引入涂布机的烘道， 在出烘道并经冷却后将离型层复合到压敏 层上， 收卷， 得到由离型层、 压敏层和基材所构成的保护膜。 一种如权利要求 2所述的保护膜的加工方法， 其特征在于它包括以 下步骤： A)选取合格的并且在一侧表面预先结合有防粘层的基材；
B)涂布， 先对基材的表面进行电晕处理， 再用表面具有浮点状或 网纹状构造的涂胶辊将压敏胶料涂布到基材的另一侧表面， 得到 一侧具有防粘层而另一侧具有浮点状或网纹状结构的压敏层的涂 布基材；
C)烘干， 将步骤 B)所得到的涂布基材引入涂布机的烘道， 出烘道 后收卷， 得到由压敏层、 防粘层和基材所构成的保护膜。
[Claim 10] 根据权利要求 8或 9所述的保护膜的加工方法， 其特征在于步骤 A)
中所述的选取合格基材是指选取无针孔、 无晶点、 无擦伤、 无皱 褶、 透明度好和平整度理想的基材； 步骤 C)中所述的涂布机的烘 道的温度为一区 50— 70°C， 二区 80— 90°C， 三区 80— 110°C， 四区 60 - 90°C， 所涂基材的行进速度为 20 - 80m/min。
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