WO2020248621A1 - 一种安全不碎的pet薄膜镜子及其制备方法 - Google Patents
一种安全不碎的pet薄膜镜子及其制备方法 Download PDFInfo
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- WO2020248621A1 WO2020248621A1 PCT/CN2020/076520 CN2020076520W WO2020248621A1 WO 2020248621 A1 WO2020248621 A1 WO 2020248621A1 CN 2020076520 W CN2020076520 W CN 2020076520W WO 2020248621 A1 WO2020248621 A1 WO 2020248621A1
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- mirror
- aluminum alloy
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- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 229920000139 polyethylene terephthalate Polymers 0.000 claims abstract description 62
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 43
- 239000010410 layer Substances 0.000 claims abstract description 40
- 229920002799 BoPET Polymers 0.000 claims abstract description 25
- 229910052751 metal Inorganic materials 0.000 claims abstract description 20
- 239000002184 metal Substances 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 10
- 239000011248 coating agent Substances 0.000 claims abstract description 8
- 238000000576 coating method Methods 0.000 claims abstract description 8
- 238000007747 plating Methods 0.000 claims abstract description 8
- 230000003064 anti-oxidating effect Effects 0.000 claims abstract description 7
- 229920005989 resin Polymers 0.000 claims abstract description 7
- 239000011347 resin Substances 0.000 claims abstract description 7
- 230000003678 scratch resistant effect Effects 0.000 claims abstract description 6
- 239000012790 adhesive layer Substances 0.000 claims abstract description 5
- 239000000853 adhesive Substances 0.000 claims description 9
- 230000001070 adhesive effect Effects 0.000 claims description 9
- 238000009713 electroplating Methods 0.000 claims description 8
- 239000007921 spray Substances 0.000 claims description 6
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052804 chromium Inorganic materials 0.000 claims description 4
- 239000011651 chromium Substances 0.000 claims description 4
- 229910052709 silver Inorganic materials 0.000 claims description 4
- 239000004332 silver Substances 0.000 claims description 4
- 239000011701 zinc Substances 0.000 claims description 4
- 229910052725 zinc Inorganic materials 0.000 claims description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 229920006302 stretch film Polymers 0.000 claims description 3
- 229920003002 synthetic resin Polymers 0.000 claims description 3
- 239000000057 synthetic resin Substances 0.000 claims description 3
- 238000002834 transmittance Methods 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 230000006378 damage Effects 0.000 abstract description 9
- 208000027418 Wounds and injury Diseases 0.000 abstract description 5
- 208000014674 injury Diseases 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000005020 polyethylene terephthalate Substances 0.000 description 41
- 239000010408 film Substances 0.000 description 17
- 239000002585 base Substances 0.000 description 13
- 239000011521 glass Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000001579 optical reflectometry Methods 0.000 description 5
- -1 Polyethylene terephthalate Polymers 0.000 description 3
- 238000003384 imaging method Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 229920001707 polybutylene terephthalate Polymers 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 230000003370 grooming effect Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 229910001095 light aluminium alloy Inorganic materials 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/042—Coating with two or more layers, where at least one layer of a composition contains a polymer binder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D11/00—Producing optical elements, e.g. lenses or prisms
- B29D11/00596—Mirrors
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47G—HOUSEHOLD OR TABLE EQUIPMENT
- A47G1/00—Mirrors; Picture frames or the like, e.g. provided with heating, lighting or ventilating means
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47G—HOUSEHOLD OR TABLE EQUIPMENT
- A47G1/00—Mirrors; Picture frames or the like, e.g. provided with heating, lighting or ventilating means
- A47G1/02—Mirrors used as equipment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D11/00—Producing optical elements, e.g. lenses or prisms
- B29D11/00865—Applying coatings; tinting; colouring
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/046—Forming abrasion-resistant coatings; Forming surface-hardening coatings
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/06—Coating with compositions not containing macromolecular substances
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/14—Protective coatings, e.g. hard coatings
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/08—Mirrors
- G02B5/0808—Mirrors having a single reflecting layer
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/08—Mirrors
- G02B5/0816—Multilayer mirrors, i.e. having two or more reflecting layers
- G02B5/085—Multilayer mirrors, i.e. having two or more reflecting layers at least one of the reflecting layers comprising metal
- G02B5/0858—Multilayer mirrors, i.e. having two or more reflecting layers at least one of the reflecting layers comprising metal the reflecting layers comprising a single metallic layer with one or more dielectric layers
- G02B5/0866—Multilayer mirrors, i.e. having two or more reflecting layers at least one of the reflecting layers comprising metal the reflecting layers comprising a single metallic layer with one or more dielectric layers incorporating one or more organic, e.g. polymeric layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
- B29K2067/003—PET, i.e. poylethylene terephthalate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2705/00—Use of metals, their alloys or their compounds, for preformed parts, e.g. for inserts
- B29K2705/02—Aluminium
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/18—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors
- G02B7/182—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors
- G02B7/185—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors with means for adjusting the shape of the mirror surface
- G02B7/188—Membrane mirrors
Definitions
- the invention relates to a safe and unbreakable PET film mirror and a preparation method thereof.
- a mirror is an item with a smooth surface and the ability to reflect light.
- the most commonly used mirror is a flat mirror, which is mainly used for grooming, decoration, reflective light source, etc. It is widely used in many fields such as home, office, commerce, industry, etc. It is one of the essential items in daily life.
- the existing mirror materials are mainly glass mirrors.
- the glass mirror is relatively heavy, and it is not convenient to transport and install.
- the glass mirror is also fragile, it is easy to fall down and injure people, or scratch, cut, or puncture people after being broken, causing personal injury.
- the production of glass mirrors needs to consume a lot of mineral resources, covering a large area, high energy consumption, serious pollution, and causing great damage to the ecological environment.
- PET is the abbreviation of English Polyethylene terephthalate
- Chinese means polyterephthalate plastics, mainly including polyethylene terephthalate PET and polybutylene terephthalate PBT.
- PET film is also known as high temperature resistant polyester film. It has excellent physical properties, chemical properties, dimensional stability, transparency, and recyclability. It can be widely used in magnetic recording, photosensitive materials, electronics, electrical insulation, and industrial films. , Packaging decoration, screen protection, optical-grade mirror surface protection and other fields. PET film is a kind of packaging material with relatively comprehensive performance. It has good transparency, gloss, good air tightness and fragrance retention.
- PET film has excellent mechanical properties, its strength and toughness are the best among all thermoplastics, and its tensile strength and impact strength are much higher than ordinary films; it has good stiffness, stable dimensions, and is suitable for secondary processing such as printing and paper bags. . PET film also has excellent heat resistance, cold resistance and good chemical resistance and oil resistance.
- this application proposes a safe and unbreakable PET film mirror. Its purpose is to provide a brand-new preparation material and method for the mirror, avoiding the unsafe use and transportation and preparation of traditional mirrors. The problem of inconvenience.
- a safe and unbreakable PET film mirror includes: a PET mirror surface, which includes: a PET base film layer; on the back of the PET base film layer, a metal electroplating layer and an anti-oxidation coating are sequentially arranged; on the PET base film layer The front side is provided with a scratch-resistant resin layer; an aluminum alloy frame is arranged under the PET mirror surface, and an adhesive layer is coated on the side of the aluminum alloy frame in contact with the PET mirror surface.
- the PET base film layer has a thickness of 10-100 microns, a light transmittance of more than 90%, a haze of less than 1.5%, a shrinkage of less than 3%, and a clarity of more than 95%.
- the thickness of the metal plating layer is 500-1000 angstroms.
- the metal electroplating layer is aluminum or silver, chromium, or zinc.
- the application also discloses a method for preparing the above-mentioned safe and unbreakable PET film mirror, which includes the following steps:
- PET mirror surface prepare a metal electroplating layer on the back of the PET base film under vacuum conditions; spray an anti-oxidation coating on the metal electroplated layer; then spray a synthetic resin on the front of the PET base film, Preparation of scratch-resistant resin layer;
- Preparation of aluminum alloy frame prepare the aluminum alloy frame according to the size and shape of the mirror required to ensure that the surface of each edge of the aluminum alloy frame and the PET mirror surface is flat, smooth and free of burrs;
- the high-strength adhesive may be a strong double-sided tape, and its tensile strength is greater than 14N/cm 2 .
- the operating environment temperature for attaching the PET mirror is 15-35°C
- the positioning time is 20-30 minutes
- the curing time is 24-36 hours.
- the PET mirror surface wraps and bypasses the front surface of the aluminum alloy frame, and is adhered to the side or back surface of the aluminum alloy frame by a high-strength adhesive.
- the mirror of the present application is light in weight, is not broken, and has high safety. Even if it is damaged, it will never cause personal injury; in addition, the production method of the present application has simple process, small footprint, and low energy consumption. , Will not cause pollution and damage to the environment.
- Figure 1 is a schematic diagram of the structure of the PET mirror of the application
- Figure 2 is a schematic diagram of the structure of the mirror of the application.
- the safe and unbreakable PET film mirror of the present application includes a PET mirror 1, an aluminum alloy mirror frame 2 and an adhesive layer 3.
- the PET mirror 1 includes: a PET base film layer 11; on the back of the PET base film layer 11, a metal plating layer 12 and an anti-oxidation coating 13 are sequentially provided; on the front side of the PET base film layer 11 With a scratch-resistant resin layer 14.
- the aluminum alloy mirror frame 2 is arranged under the PET mirror surface 1, and an adhesive layer 3 is coated on the side of the aluminum alloy mirror frame 2 in contact with the PET mirror surface 1.
- the PET base film layer 11 is selected with a thickness of 10-100 microns, light transmittance greater than 90%, haze less than 1.5%, shrinkage rate less than 3%, and clarity greater than 95%.
- Metal plating The thickness of the metal plating layer during electroplating is 500-1000 angstroms.
- the metal plating layer is aluminum or silver, chromium, or zinc.
- the aluminum alloy frame 2 in this embodiment cuts the aluminum alloy profile into 4 sections with 2 lengths and 2 widths according to the required size requirements. The two ends of each section of the aluminum alloy section are beveled at a 45° angle, and then 4 sections The aluminum alloy profiles are assembled to obtain a finished aluminum alloy frame.
- the aluminum alloy frame 2 is not limited to the structure given in this embodiment, and may also have other structures, such as a triangle, a polygon, a circle, an ellipse, and the like.
- This application overturns the traditional mirror mode using glass as the material. It uses vacuum-plated PET film with high light reflectivity as the mirror surface, and uses light aluminum alloy material to make the mirror frame, which greatly reduces the weight, which is about 15% of the ordinary glass mirror with the same area. It avoids the defect that the glass mirror is fragile when it falls, falls, or hits, and it is easy to carry without taking additional safety protection measures. It is particularly important that the safety is very high, even if it is damaged, it will never cause personal injury. In addition, due to the characteristics of the PET material itself, the PET mirror of the present application will maintain surface tension after the preparation is completed, is durable and resistant to high temperatures, and does not appear to be distorted.
- the application also discloses the preparation method of the safe and unbreakable PET film mirror, which includes the following steps:
- PET mirror surface Under high vacuum, metal aluminum or metallic silver, metallic chromium, and metallic zinc are melted and evaporated at high temperature, so that the metal vapor is deposited and deposited on the surface of the PET base film layer to form a metal electroplating layer to make the PET base
- the film has a mirror effect with high light reflectivity.
- Preparation of aluminum alloy frame prepare the aluminum alloy frame according to the shape and size of the required mirror, cut the aluminum alloy profile into 4 sections with 2 lengths and 2 widths, and cut the two ends of each section at a 45°C angle , And then assemble 4 sections of aluminum alloy profiles to obtain a finished aluminum alloy frame. Ensure that the surface of each edge of the aluminum alloy frame and the PET mirror surface is smooth and free of burrs. When the length or width is greater than 50CM, one or more aluminum alloy beams can be added to the middle position of the aluminum alloy frame for fixing to improve the overall firmness and flatness of the aluminum alloy frame.
- step (2) aluminum alloy spectacle frames of other shapes and sizes, such as triangles, polygons, circles, and ellipses, can also be made as needed.
- Stretch film Cut the PET mirror according to the size of the aluminum alloy frame.
- the cut PET mirror is stretched around by mechanical equipment, and the stretching tension is controlled to 2-10 N.
- high-strength adhesive The mixture is pasted on the edge surfaces of the aluminum alloy frame. After stretching and then pasting, the mirror surface of the PET film will be flatter and the imaging reflection effect will be better.
- the mirror light reflectivity of the stretched PET film can reach 90%-95%, which is higher than the 90% light reflectivity of ordinary glass mirrors.
- the high-strength adhesive may be a strong double-sided adhesive, and its tensile strength is greater than 14N/cm 2 .
- the best operating environment temperature for pasting PET mirror is 15-35°C, positioning time is 20-30 minutes, and curing time is 24-36 hours. If the operating environment temperature decreases, the positioning and curing time will be extended accordingly.
- step (3) the PET mirror surface wraps around the front surface of the aluminum alloy frame, and is adhered to the side or back surface of the aluminum alloy frame with a high-strength adhesive.
- the finished mirror can not see the frame from the front, and the field of vision is larger and more beautiful.
- the safe and unbreakable PET film mirror of the present invention is not broken, light in weight, high in safety, convenient to handle, easy to use, and will never cause personal injury even if it is damaged.
- the PET film mirror produced by the present invention is acid-resistant, alkali-resistant, and resistant to oxidation, and is not prone to fogging, oxidized dark spots, etc., and can be used in places with harsh environments such as bathrooms and chemical workshops.
- using the present invention to produce a safe and unbreakable PET film mirror has a simple process, small space occupation, very low energy consumption, and no pollution and damage to the environment.
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- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Ophthalmology & Optometry (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Optical Elements Other Than Lenses (AREA)
- Mirrors, Picture Frames, Photograph Stands, And Related Fastening Devices (AREA)
Abstract
本发明公开一种安全不碎的PET薄膜镜子及其制备方法，包括：PET镜面，其包括：PET基膜层；在该PET基膜层的背面依次设有金属电镀层以及抗氧化涂层；在所述PET基膜层的正面设有防刮树脂层；铝合金镜框，其设于所述PET镜面下方，且在所述铝合金镜框与所述PET镜面接触的一面上涂布有胶粘层。本申请的镜子重量轻，不破碎，安全性高，即使损坏了也绝对不会对人身造成伤害；此外，本申请的生产方法工艺简单，占地面积小，能耗低，不会对环境造成污染和破坏。
Description
本发明涉及一种安全不碎的PET薄膜镜子及其制备方法。
镜子是一种表面光滑、具有反射光线能力的物品，分平面镜、曲面镜两类。最常用的镜子是平面镜，主要用来整理仪容、装饰、反射光源等，广泛应用于家居、办公、商业、工业等许多领域，是日常生活的必备物品之一。
现有的镜子材质主要以玻璃镜子为主。但玻璃镜子比较重，搬运、安装都不太方便。玻璃镜子还易碎，容易倒下来砸伤人，或破碎后划伤、割伤、扎伤人，对人身造成伤害。另外，玻璃镜子的生产需要消耗大量的矿产资源，占地广、能耗高、污染严重，对生态环境造成很大破坏。
另外目前市场上也存在一些薄膜镜子。一种是比较厚的PC薄膜镜子，需要使用较大的拉力才能将其拉平后粘贴，但拉力大时回弹力也比较大，时间长了以后，镜面张力下降会导致镜面成像效果扭曲。另一种是比较薄的VMPET薄膜镜子，但它的热收缩率比较高在20％以上，热收缩温度在70-100℃，高热收缩率和低热收缩温度很容易因环境温度急剧变化造成镜面发生褶皱，影响成像效果。
PET是英文Polyethylene terephthalate的缩写，中文意思是聚对苯二甲酸类塑料，主要包括聚对苯二甲酸乙二酯PET和聚对苯二甲酸丁二酯PBT。PET薄膜又名耐高温聚酯薄膜，它具有优异的物理性能、化学性能及尺寸稳定性、透明性、可回收性，可广泛的应用于磁记录、感光材料、电子、电气绝缘、工业用膜、包装装饰、屏幕保护、光学级镜面表面保护等领域。PET薄膜是一种性能比较全面的包装材料，其透明性好，有光泽，具有良好的气密性和保香性。PET薄膜的机械性能优良，其强韧性是所有热塑性塑料中最好的， 抗张强度和抗冲击强度比一般薄膜高得多；且挺力好，尺寸稳定，适于印刷、纸袋等二次加工。PET薄膜还具有优良的耐热、耐寒性和良好的耐化学药品性、耐油性。
发明内容
由于现有技术中存在着上述技术问题，本申请提出一种安全不碎的PET薄膜镜子，其目的在于提供一种全新的镜子的制备材料和方法，避免传统镜子的使用不安全和运输及制备不方便的问题。
为达到上述技术问题，本申请采用下述技术手段：
一种安全不碎的PET薄膜镜子包括：PET镜面，其包括：PET基膜层；在该PET基膜层的背面依次设有金属电镀层以及抗氧化涂层；在所述PET基膜层的正面设有防刮树脂层；铝合金镜框，其设于所述PET镜面下方，且在所述铝合金镜框与所述PET镜面接触的一面上涂布有胶粘层。
较佳的是，所述PET基膜层为厚度10～100微米，透光率大于90％、雾度小于1.5％、收缩率小于3％、清晰度大于95％。
较佳的是，所述金属电镀层厚度为500～1000埃。
较佳的是，所述金属电镀层为铝或银、铬、锌。
本申请还公开一种如上述的安全不碎的PET薄膜镜子的制备方法，包括如下步骤：
(1)PET镜面的制备：真空条件下在PET基膜层的背面制备金属电镀层；在所述金属电镀层上喷涂抗氧化涂层；再在所述PET基膜层的正面喷涂合成树脂，制备防刮树脂层；
(2)制备铝合金镜框：根据所需镜子的大小和形状制备铝合金镜框，确保铝合金镜框与PET镜面相接的各边缘的表面平整、光滑、无毛刺；
(3)绷膜：根据铝合金镜框的大小按照比例裁剪PET镜面，将裁剪好的PET镜面采 用机械设备向四周拉伸，拉伸张力控制为2-10牛，拉伸平整后使用高强度粘合剂粘贴于所述铝合金镜框的所述各边缘表面上。
较佳的是，所述高强度粘合剂可以为强力双面胶，且其拉伸强度大于14N/cm
2。
较佳的是，在步骤(3)中，粘贴PET镜面的操作环境温度为15-35℃，定位时间为20-30分钟，固化时间为24-36小时。
较佳的是，在步骤(3)中，所述PET镜面包裹并绕过所述铝合金镜框的正面，且通过高强度粘合剂粘贴在所述铝合金镜框的侧面或背面。
由于采用上述技术手段，本申请的镜子重量轻，不破碎，安全性高，即使损坏了也绝对不会对人身造成伤害；此外，本申请的生产方法工艺简单，占地面积小，能耗低，不会对环境造成污染和破坏。
图1为本申请的PET镜面的结构示意图；
图2为本申请的镜子的结构示意图。
下面通过实施例，并结合附图，对本发明的技术方案作进一步具体的说明。
参见图2所示，本申请的安全不碎的PET薄膜镜子包括PET镜面1、铝合金镜框2以及胶粘层3。如图1所示，PET镜面1包括：PET基膜层11；在该PET基膜层11的背面依次设有金属电镀层12以及抗氧化涂层13；在所述PET基膜层11的正面设有防刮树脂层14。铝合金镜框2设于所述PET镜面1下方，且在所述铝合金镜框2与所述PET镜面1接触的一面上涂布有胶粘层3。
为达到较佳的镜面光反射率，所述PET基膜层11选用厚度在10～100微米，透光率大于90％、雾度小于1.5％、收缩率小于3％、清晰度大于95％进行金属电镀。而电镀时金属电镀层 厚度为500～1000埃。所述金属电镀层为铝或银、铬、锌。
本实施例中的铝合金镜框2根据需要的尺寸大小要求，将铝合金型材切割成2长2宽的4段，并将每段铝合金型材的两端斜切45°角，再将4段铝合金型材拼装起来，得到一个铝合金框架成品。
当然，铝合金镜框2并不局限于本实施例中所给的结构，也可以是其他的结构，如三角形、多边形、圆形、椭圆形等。
本申请颠覆了以玻璃为材质的传统镜子模式，采用高光反射率的真空电镀PET薄膜作为镜面，用轻型铝合金材料制作镜框，大大减轻重量，是相同面积普通玻璃镜子的15％左右。避免了玻璃镜子在倒下、摔落、撞击时易碎的缺陷，搬运轻便，无需采取额外安全保护措施。特别重要的是，安全性非常高，即使有损坏，也绝对不会造成人身伤害。此外，由于PET材质本身的特性，本申请的PET镜面在制备完成后会保持表面张力，持久耐用且耐高温，不会出现镜面扭曲。
本申请还公开该安全不碎的PET薄膜镜子的制备方法，包括如下步骤：
(1)PET镜面的制备：在高真空状态下通过高温将金属铝或金属银、金属铬、金属锌融化蒸发，使金属蒸汽沉淀堆积到PET基膜层表面，形成金属电镀层，使PET基膜层具有高光反射率的镜面效果。然后在金属电镀层上喷涂一层附着力较强的复合材料的抗氧化涂层，隔绝空气，保护金属层不会因氧化而发黑，并避免受到水气、酸、碱等腐蚀。在PET基膜层没有电镀的另一面，喷涂合成透明树脂，形成合成树脂涂层，使PET镜面具有防刮花、耐摩擦的性能，不会因为日常擦试造成镜面光反射效果减损。至此，PET镜面的加工制备就完成了。
(2)制备铝合金镜框：根据所需镜子的形状、大小制备铝合金镜框，将铝合金型材切割成2长2宽的4段，并将每段铝合金型材的两端斜切45℃角，再将4段铝合金型材拼装起 来，得到一个铝合金框架成品。确保铝合金镜框与PET镜面相接的各边缘的表面光滑无毛刺。当长度或宽度大于50CM时，可在铝合金框架的中间位置加一条或多条铝合金横梁，进行固定，以提高铝合金框架的整体牢固度和平整度。
此外，在步骤(2)中，在也可以根据需要制作其它形状、大小的铝合金镜框，如三角形、多边形、圆形、椭圆形等。
(3)绷膜：根据铝合金镜框的大小按照比例裁剪PET镜面，将裁剪好的PET镜面采用机械设备向四周拉伸，拉伸张力控制为2-10牛，拉伸平整后使用高强度粘合剂粘贴于所述铝合金镜框的所述各边缘表面上。拉伸后再粘贴可使PET薄膜镜面更平整，成像反射效果更佳，经过拉伸的PET薄膜镜面光反射率可达90％～95％，高于一般玻璃镜子90％的光反射率。所述高强度粘合剂可以为强力双面胶，且其拉伸强度大于14N/cm
2。粘贴PET镜面的最佳操作环境温度为15-35℃，定位时间为20-30分钟，固化时间为24-36小时。如果操作环境温度降低，定位、固化时间相应延长。
此外，在步骤(3)中，所述PET镜面包裹并绕过所述铝合金镜框的正面，且通过高强度粘合剂粘贴在所述铝合金镜框的侧面或背面。制成的镜子成品从正面看不到边框，视野更大、更美观。
本发明所述的安全不碎的PET薄膜镜子，不破碎、重量轻，安全性高，搬运方便，易于使用，即使损坏了，也绝对不会对人身造成伤害。另外，使用本发明生产的PET薄膜镜子，耐酸、耐碱、抗氧化，不易出现起雾、氧化黑斑等现象，可应用于浴室、化工车间等环境比较恶劣的场所。同时，使用本发明来生产安全不碎的PET薄膜镜子，工艺简单，占用场地小，能耗非常低，不会对环境造成污染和破坏。
以上所述的实施方式仅用于说明本发明而不用于限制本发明的范围。本领域技术人员对本发明所做的均等变化与修饰，皆应属于本发明所附的权利要求书的涵盖范围。
Claims (8)
- 一种安全不碎的PET薄膜镜子，其特征在于，包括：PET镜面，其包括：PET基膜层；在该PET基膜层的背面依次设有金属电镀层以及抗氧化涂层；在所述PET基膜层的正面设有防刮树脂层；铝合金镜框，其设于所述PET镜面下方，且在所述铝合金镜框与所述PET镜面接触的一面上涂布有胶粘层。
- 根据权利要求1所述的安全不碎的PET薄膜镜子，其特征在于，所述PET基膜层为厚度10～100微米，透光率大于90％、雾度小于1.5％、收缩率小于3％、清晰度大于95％。
- 根据权利要求1所述的安全不碎的PET薄膜镜子，其特征在于，所述金属电镀层厚度为500～1000埃。
- 根据权利要求1所述的安全不碎的PET薄膜镜子，其特征在于，所述金属电镀层为铝或银、铬、锌。
- 一种如权利要求1至4中任一所述的安全不碎的PET薄膜镜子的制备方法，其特征在于，包括如下步骤：(1)PET镜面的制备：真空条件下在PET基膜层的背面制备金属电镀层；在所述金属电镀层上喷涂抗氧化涂层；再在所述PET基膜层的正面喷涂合成树脂，制备防刮树脂层；(2)制备铝合金镜框：根据所需镜子的形状、大小制备铝合金镜框，确保铝合金镜框与PET镜面相接的各边缘的表面平整、光滑、无毛刺；(3)绷膜：根据铝合金镜框的大小按照比例裁剪PET镜面，将裁剪好的PET镜面采用机械设备向四周拉伸，拉伸张力控制为2-10牛，拉伸平整后使用高强度粘合剂粘贴于所述铝合金镜框的所述各边缘表面上。
- 根据权利要求5所述的安全不碎的PET薄膜镜子的制备方法，其特征在于，所述高强度粘合剂为强力双面胶，且其拉伸强度大于14N/cm 2。
- 根据权利要求5所述的安全不碎的PET薄膜镜子的制备方法，其特征在于，在步骤(3)中，粘贴PET镜面的操作环境温度为15-35℃，定位时间为20-30分钟，固化时间为24-36小时。
- 根据权利要求5所述安全不碎的PET薄膜镜子的制备方法，其特征在于，在步骤(3)中，所述PET镜面包裹并绕过所述铝合金镜框的正面，且通过高强度粘合剂粘贴在所述铝合金镜框的侧面或背面。
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