TW200540207A - Surface binding method for polyester diaphragm and silica gel key and manufactured product thereof - Google Patents

Abstract

Provided is one kind of surface binding method for polyester diaphragms and silica gel keys and manufactured products thereof. The surface binding method is able to shorten the production period and decrease the required amount of jigs to improve the production efficiency. The surface binding method includes following steps: providing a polyester diaphragm and carrying out the surface processing on such polyester diaphragm; applying a layer of ultraviolet glue on such polyester diaphragm; providing plural silica gel keys; carrying out the surface processing on the bottom surface of the silica gel keys; positioning such silica gel key on a bonding jig; placing and fixing such polyester diaphragm on such bonding jig; pressing a transparent board on such polyester diaphragm; and irradiating ultraviolet on such bonding jig.

Description

200540207

[Technical field to which the invention belongs] Production-related—Polyester film and the surface of the silicone button are glued to the finished product, in particular, it refers to the surface of the outer edge of the silicone button: Adhesive method and application of the product with the bottom surface of a person and a gathering 'for example, a keyboard that can be applied to a desktop computer, a mouthpiece method, #mobile phone mobile phone, wireless communication phone son and daughter = equal type computer [previous technology ] Polyethylene terephthalate), referred to as transparency and gloss, and can be excellent. At the same time, the application of wear resistance is becoming more and more widespread. The molecular arrangement is dense and neat, and the field of separation has always been a difficult-to-stick material. Silicone rubber is an aggregated, low-energy surface. The polyester body itself has a considerable purpose of making the polyester film and silicone rubber energy production, even more kpoiyethyl polyester (PET), which has good transparent weather resistance, fatigue resistance, heat resistance and electrical properties. It is recyclable. It is mechanical, electronic, etc. However, because the polyester material is a crystalline plastic, the structure is stable, the surface free energy is low, and the surface tension is small, which is difficult to attach to silicone rubber. Adhesive materials are difficult to adhere to. It is not easy to find a new method to adhere firmly to it. The production of similar products in the conventional technology uses a hot-baking glue to attach the polyacetate film to the Shixi rubber button. In this method, the glue is coated on the polyacetate film, and then the polyacetate film is pressed with the silicone button with a bonding jig; at the same time, multiple sets of laminated products and jigs are sent to the oven for baking. In a

200540207

V. Description of the invention (2) After the temperature of the baking utensil is naturally lowered at least at the set temperature: bake twenty knife clocks; after baking, it needs to be cured, but the above-mentioned conventional person will open the mouthpiece and take out the fit After the product. -The fitting cycle 2f method of the fixture not only requires a large amount of treatment *, but also does not have 40 minutes in the same cost, which is not only not high; in addition, the fitting Dezhou has been time-consuming and efficient in production. (The tensile force needs to be greater than the product such as bite / adhesion /, often less than the customer's requirements. The time is equal to one kilogram). Therefore, the yield is not high. [The surface of the invention is short. The surface of the laminating-polyester outer light glue button is the same. The main bonding method of the invention, the cycle, and reducing the adhesion between the surface bonding of the other key of the invention In the method of occupation, the jig is provided with a diaphragm, and the bottom surface of the polyester film is placed in the cavity; if the Ming plate is placed for the purpose of the purpose of the jig, the purpose of the method is to include the number of the polyester. On-chip; surface-treated and fixed polyester film to provide a polyester film sheet and silicone keypad system to provide a surface bonding method that can reduce the required quantity to improve production efficiency '. In order to provide a finished product using the above-mentioned polyester film sheet and which can improve the polymer film sheet and the invention-integrated polymer film sheet and the silicone keypad, the steps are as follows: a fitting jig, including a hole and two The above positioning Du: Low, provide the film for surface treatment; the coating layer purple provides a plurality of silicone buttons; for # ^ 耵 Child Silicone; positioning the silicone button on the lamination > the polyester film on the lamination合 治 夏 μ ~ I ,, on, on the tablet, the transparent plate is provided with fixed decay ^ ^ m 孔 乃

You page 7 200540207 V. Description of the invention (3) Corresponds to the positioning post to fix the transparent plate; and irradiates ultraviolet light to the bonding jig. In order to achieve the above-mentioned another object, a manufactured product of a polyester membrane and a silicone keypad of the present invention is made by applying the above method of the polyester membrane and a silicone keypad, and includes a polyester The diaphragm has a surface treated surface; a UV glue is coated on the surface of the polyester diaphragm; and a plurality of silicone keys are fixed to the UV glue by a jig.嗲 The surface of the polyester membrane. The preferred embodiments of the present invention will be described in detail in conjunction with the drawings. These descriptions are only used to explain the present invention, and not to limit the present clearly. However, for the rights and implementation, please refer to the reference and the fixture. The surface tension of silicon membrane 1 and silicon, the tension is small, the molecular structure of the polymer of the silicone button needs to be qualified before bonding, so as to improve the polymer. Same as the two pictures of the surface of the polyester south coating, and the surface and the surface of the polyester film are adhered to the surface and the fruit crystal membrane. 1 Adhesive treatment package $ this Maoming polyacid membrane, silicone key body combination diagram . The present invention is first surface-treated. Metal surfaces have easier adhesion, but plastics and rubber have lower energy surfaces, so this polyester shim is surface treated to improve surface adhesion. Its chemical structure and crystallinity are related. If the degree is different, the surface tension varies greatly. And the surface of the silicone button 2 to improve its chemical properties, including the following four ways:

200540207 Weak interface sex agent, surface layer, dust, etc. The effective treatment of the molecule of the interface, the group ('carbonyl group', the substrate surface plus the good adhesion of the film and the coating material are similar to the coating material. However, the method and the purple selection surface also require a junction. The use of electric plasma (Weak boundary lay, WBL): The chemical bond between plastic and rubber can be removed by dissolving or brackish water. For example, the chemical bond between the various agents that migrate from the product to the surface is the weakest. In order to enhance the chemical bond between the interface layer and the substrate Those that can be formed with the coating film-forming material can form a bond between the surface of the large substrate and the coating by hydrogen bonding. However, the roughness must be improved by selecting an appropriate solvent system to ensure that the surface of the substrate is high and can be obtained by intermixing Solution and swelling. Agent treatment method, coupling agent treatment method, plasma surface treatment must not only consider the condition of the material to be treated, which is a type of polyester film that conforms to high efficiency and low-conductivity printed conductive metal. As a prerequisite for rough hands, the substrate and molecular hair should be avoided a lot. External light treatment is practical. 5. Description of the invention (4) 1. Scavenger, or The weak mediator on the surface of the surface of the glue and the adsorbed ash 2. It is the strongest, and the hydrogen bond is the next best binding force. The hydroxyl group (-0H) that undergoes chemical reversal on the surface 3. The contact area is also increased by the coating. 4, substrate and solubility parameter molecules and coating materials to form a strong junction surface treatment method, flame treatment method, etc. In the selected physical and chemical properties, the present invention is easy to operate, but the corona method is a combination of Force: The most effective way to apply force between substances is to increase the amount of B-mould on the surface of the substrate) or '-CD-). Degree: One of the increasing stages 〇 Mutual dissolution Film-forming material Co-solubilization Excessive dissolution Including the spray treatment method, production conditions Halo discharge treatment Non-body surface treatment method

200540207 V. Description of the invention (5) Conveying to the corona machine, the sparks are discharged to the polyester film i by the discharge electrode for surface treatment. After the corona treatment, the polymer on the surface of the poly (vinyl acetate) membrane will undergo a certain oxidation, & solution, polymerization and other reactions, which introduces polar functions such as meridian group and m group into the polyacetate molecular bond. In order to provide the necessary conditions for its reaction with glue to form chemical bonds. It is expected that the corona treatment of the surface of the poly (vinyl acetate) film 1 can increase its surface roughness, thereby increasing the contact area between the surface and the glue, and providing favorable conditions for increasing the adhesion. After considering various surface treatments, the present invention takes corona method as the first choice for processing polyacetate film. Corona discharge treatment of polyacetate surface has the characteristics of fast, high efficiency and long-lasting effect. The time it takes is only ten seconds. Achieve good results. After processing, the surface tension of the poly-fermented film can be increased from less than 30 (mN / m 2) to more than 40 (mN / m 2) before processing. Ten: Yes: J: J spread on its surface And wetting. Advantages over treatment. First, the time is long, and the female is non-toxic, which is more suitable for environmental protection requirements. The present invention is suitable for the husband to broadcast the surface of the female. The stone xi :::: The broken rubber button 2 is still corona method. On an insulating platform, the platform is fed into the corona machine A and the bottom surface to be attached is facing up, and then the insulation is applied to the surface Ep, the stone Xijiao button 2 stolen by the scholar: = = polycondensation of the circuit The vinegar film 1 may be provided with conductive grains. Because the metal ^: 4 is halo-discharged, it is carried on the surface. Polyacetate burns and catches fire.本 ^ ^ 有 achieving conductivity ’#Electric spark contact will cause 185n_ultraviolet light production to be considered, the specific method is: using a wavelength of 15 m from the surface of the mouth to the light source

Page 10 200540207

5. Description of the invention (6) The surface of the sheet 1 is irradiated, and the irradiation time is about three minutes. After the UV light treatment, the surface roughness of the poly-Si film will also change greatly, and at the same time, oxygen-containing functional groups will be formed and the surface crystallinity will also be reduced. Ultraviolet light irradiation Polyvinyl acetate film should be treated with short-wavelength ultraviolet light below 250 nm. The longer the Zi Xibu 'light wavelength, the less obvious the processing effect. The Shi Xijiao keys with conductive particles are also treated with UV light. The surface-treated polyester membrane 1 and silicone button 2 need to be glued together. In terms of adhesive selection, the adhesive force of the silicone button 2 and the polyester film 1 is often an important indicator for customers to evaluate the product after bonding. Therefore, the choice of glue is also the key to the firmness of the joint. Good adhesion must meet the following points: 1. The adhesive must be able to wet the substrate well. 2. The polarity of the desiccant is similar to that of the substrate (the solubility parameters are similar). 3. Clean the substrate in advance to completely remove the weak interface layer on its surface. 4. Temporarily apply surface activation treatment to the substrate. 5. Optimize the whole process technology based on the actual situation. The types of glue that can be used in this field are: hot-baking glue, instant glue and purple brush, and glue. Among them, the curing speed of the instant glue is too fast, and it cannot be used for printing. Although it has a good connection for the adhesion of the polymer membrane and the silicone button, the process is not applicable. The hot-baking adhesive is used for the resulting bonding (it takes a lot of bonding fixtures and it takes 30 minutes due to the limitation of the baking time). The cycle of the fixture is long, so it needs more Large costs affect productivity. The development of the UV glue process can resolve the conflicts in the application of a glue.

200540207 V. Description of the invention (7) There are some factors that need to be considered for UV adhesives. The surface tension of the treated polyester film can reach more than 40 (mN / m 2), so the surface tension of the glue must be less than this value to achieve the spread and wetting of the glue on its surface. In addition, the solubility parameter of the solvent is a very important physical property index for the adhesion of the coating on the rubber and plastic substrate. Good adhesion can only be obtained when the polymer substrate is highly miscible with the coating resin. Please refer to the third graph, which is the coordinate graph of the relationship between the adhesion of the polymer film and the adhesive. It can be seen from the figure that although some glues can completely wet the substrate, the peel strength is not high, and only the solubility parameter 5 Adhesive strength of No. 1 to No. 3 adhesives similar to polyester film (5 = 10 · 7) is the highest. The numbered components of the adhesive are: 1 polyethylene; 2_ polyisobutylene; 3—polystyrene-butadiene, 4—polyethylene, 5—butadiene rubber; 6—gaseous polyethylene (Hypalon); 7-acrylic acid, methacrylic acid ester; 8-polyethylene-vinyl acetate; 9-polyacetic alcohol; 10-polyacryl-monobutadiene; 1 1_ ethylene glycol / TDI; 12-acetic acid Ethylene-butadiene-maleic anhydride copolymer; 13-bisphenol A / isocyanate; 14-polyvinyl acetate; 15-chloroacetamidine-acrylonitrile copolymer, 16-alkenyl / alkoxylated nylon. In addition, the interaction between molecular weight and molecular polarity and crystallinity must be considered. Based on the above theory, combined with the specific requirements of actual production, and after a large number of tests, the present invention screens out the UV glue suitable for the production of this product. The polyester film 1 is printed by screen printing after corona treatment.

200540207 V. Description of the invention Brush glue. Controlled on 6 passes, the static electricity, ί 2 for the method, move the middle of the fitting jigs 3 2, and 3 the broken glue so that most of the bits can be placed on the whole! In this example, the material of the glue-fixing pressure positioning hole 4 is provided with water. After UV (8) printing glue to 8 // 〇 after the above steps, the fixture 3 is not easily deformed. The rubber keypad is also a silicon rubber keypad 3 even if it is provided with a shijiao jig jig 3; or 3 is provided with a suction hole for the air pressure key 2 in the hollow part. The fitting jig 3 has four corona treatments on the fitting jig 3 after corona treatment. The fixing jig 3 is on the fixing jig 3, so that 4 2 in the adhesive layer must be transparent to remove the polyester film. The thickness of the glue in the film should be characterized by the better silicon. The 2 puts. The person who places the button 2 can connect the hollow part of the layer to the lowering. After the bonding rule 2 falls into the center of the silicone, the 0 is provided with at least a column 3 4 0. Further air is applied to the fixed luminosity High, the transparent board glued keys are placed with electric wood glue on the stick (not shown in the figure, there are 3 holes in the middle, 3 are located on the key 2 and the silicone rubber is positioned according to the two, and the cover should be covered and discharged. Column 3 can be made of purple wood 4 with 2 positioning quality. 3 sets of methods can be combined with the empty sieve key shown) is the empty part, 2 is the hole 3 that produces the hole 3 and the surface key 2 of the hole 3 is placed on the same side. Plural uses the method of shaking 3 to connect to the suction 2 of the patch; within 2, the fitting fixture can move the sieve key with no 孑 L hole and then shake, and the fixture can be combined with the hole. In this way, the remaining space can be located on the positioning column 34 of the fixture. The column 34 of this embodiment can be provided with the coated silicone button 2. A transparent plate 4 is provided, and the transparent plate 4 is provided with four 4. The transparent plate is made of a material through which external light passes, and the glue layer is formed to make the glue solid.

Page 13 200540207 Five descriptions, description of the invention (9) Please refer to the fourth figure, which is a flow chart of the above surface bonding method of the present invention, which is briefly described; The important aspects of the Suifeng invention are summarized in the above. The polyester film of the present invention and the silicon method can be used to bond the Shixijiao keys with ultraviolet light glue. It has the following characteristics: simple process of bonding square. It should be used in practice. ; Dagger needs: cost, the purpose of improving production efficiency. The surface bonding method of the present invention is to achieve the present invention. From various methods, it will be equipped with ruer, θ, combined with a reasonable fit, and optimized, low-cost two-tier & Polyurethane diaphragm with silicon button and Shi Xijian: ί: Mass production. The application of the product of the present invention can achieve the adhesion; J level required by customers to improve product yield and the surface bonding method of the present invention. Putian resentment 4 Shihe fixtures, transparent plates. ": Use uniquely designed fixtures (including stickers: t to make similar products The production is more competitive. 、, not mentioned above, the present invention and / or the application of the trowel. However, as disclosed above, = s the requirements of the invention patent. According to the law, it is not possible to limit the invention to this. Only the preferred embodiments of the invention have changed or modified the scope of rights equally since they have done so. According to the scope of the application of the present invention, the review committee has taken the time to review it [and h is still within the scope of the present invention. Please do it soon. Inspired by invention, real virtue

200540207 Simple illustration of the drawing [Simplified illustration of the drawing] The first picture: a three-dimensional exploded view of the polyester diaphragm, the silicon button and the jig of the present invention. The second figure: is a three-dimensional assemblage diagram of the polyester diaphragm, the silicon button and the jig of the present invention. The third figure: the relationship between the adhesion of the polyester film and the adhesive. Fig. 4 is a flowchart of a method for bonding a polyester film sheet and a silicon keypad according to the present invention. [Reference number in the drawing] [In the present invention] Polyester film sheet 1 Glue button 2 Lamination jig 3 Hole 3 2 Transparent plate 4 Positioning hole 4 2 Positioning post 34

Page 15

Claims (1)

200540207 6. Scope of patent application 1. A method for bonding a polyester film sheet to a surface of a silicon keypad, including the following steps: Provide a bonding jig, wherein the bonding jig is provided with a plurality of holes and two or more positioning posts Provide a polyacetate film and surface-treat the polyester film; Apply a layer of UV glue to the polyester film; Provide a plurality of silicone buttons; Surface-treat the bottom surface of the stone rubber button Positioning the Shi Xijiao button in the hole of the bonding jig; placing and fixing the polyester film on the bonding jig; pressing and pressing a transparent plate on the polyester film, the transparent The board is provided with positioning holes corresponding to the positioning posts to fix the transparent board; and the ultraviolet light is irradiated on the bonding jig. 2. According to the surface bonding method of the polyester membrane and the silicone key described in item 1 of the scope of the patent application, the polyester membrane without the printed metal circuit is surface treated by corona discharge. 3. According to the method for bonding the polyester film sheet and the silicone key described in item 1 of the scope of the patent application, the polyester film sheet with printed metal circuit is surface-treated by ultraviolet light irradiation. 4. The surface bonding method of the polyester film sheet and the silicone key as described in item 1 of the scope of the patent application, wherein the silicone key without the conductive particles is surface-treated by corona discharge. 5. The surface bonding method of the polyester membrane and the silicone key described in item 1 of the scope of the patent application, wherein the silicone key with conductive particles is purple. 200540207 6. Scope of patent application Surface treatment method of external light irradiation. 6. The surface bonding method of the polyester film sheet and the silicone key as described in item 1 of the scope of the patent application, wherein screen printing is used to print the UV light glue on the corresponding position of the polyester film sheet. 7. The surface bonding method of the polyester membrane and the silicone key described in item 1 of the scope of the patent application, wherein the silicone key is positioned in the hole of the bonding jig with a vibrating screen key. 8. The surface bonding method of the polyester membrane sheet and the silicone key as described in item 1 of the scope of the patent application, wherein the method of positioning the silicone key in the hole of the bonding jig is adopted by a vacuum suction screen key method. 9. The surface bonding method of the polyester membrane and the silicone key described in item 1 of the scope of the patent application, wherein the silicone key can be positioned in the bonding jig first and then surface-treated on the silicone key. 10. The surface bonding method of the polyester film sheet and the silicone key described in item 1 of the scope of the patent application, wherein the transparent sheet is made of a material that can transmit ultraviolet light. 1 1. A manufactured product of a polyester membrane and a silicon keypad, which is manufactured by applying the above-mentioned method of bonding the polyester membrane and the silicon keypad, including: a polyester membrane having a surface treated surface ; An ultraviolet light adhesive is coated on the surface of the polyester film; and a plurality of silicone keys are fixed to the surface of the polyester film by the ultraviolet light through a jig. 1 2. The manufactured product of polyester film and silicone key as described in item 11 of the scope of patent application, wherein the thickness of the ultraviolet light adhesive is 6 to 8 //. Page 17 200540207 VI. The scope of patent application 1 3, the polyester film sheet and the silicone keypad product as described in item 11 of the scope of patent application, wherein the fixture includes a laminating fixture and a transparent plate, The bonding jig has a plurality of holes for accommodating the silicone button and at least two positioning posts, and the transparent plate is provided with positioning holes corresponding to the positioning posts. 14. The finished product of the polyester membrane and the silicon keypad as described in item 13 of the scope of the patent application, wherein the bonding jig is made of bakelite material. 15. The finished product of the polyester membrane and the silicon keypad as described in item 13 of the scope of the patent application, wherein the bonding jig is further provided with a middle hollow part connected to the hole six and an air suction hole. Connected to the hollow part of the middle layer. 16. The polyester film sheet and the silicone keypad product as described in item 13 of the scope of the patent application, wherein the material of the transparent plate is a material with high light transmittance and transparent ultraviolet light. 17. The manufactured product of polyester film and silicone keypad as described in item 11 of the scope of patent application, wherein the solubility parameter of the ultraviolet light adhesive is similar to that of polyester film. Page 18