55 results about "Gel free" patented technology

The utility model relates to the technical field of oral corner protection patches, and discloses a disposable oral corner protection patch special for dental operation, which comprises an oral interior part and an oral exterior part arranged on one side of the oral interior part, and J-shaped aluminum sheets are arranged in the oral interior part and the oral exterior part. According to the disposable oral corner protection patch special for dental operation, the J-shaped aluminum sheet is completely wrapped by the medical silica gel, the effects of supporting the appearance of the medical silica gel and adjusting the thicknesses of different oral corners are achieved, the whole patch is made of the medical silica gel, the aluminum sheet is wrapped on the inner side of the patch, the high rebound resilience of the medical silica gel plays a role in buffering the oral corners, and the side face of the patch is in a half-moon arc shape. The medical polyurethane adhesive is attached to the inner side of the oral outer portion, the inner side of the oral inner portion is free of adhesive and smooth, the medical polyurethane adhesive is attached to the inner wall of the oral cavity through opening and closing of the J-shaped aluminum sheet, the outer side surfaces of the oral outer portion and the oral inner portion are rough, and slipping of instruments during operation of a doctor is prevented; the rough surface can prevent the saliva suction tube from slipping and falling off.

The invention belongs to the field of air filtering materials, and provides a non-gel activated carbon air filtering non-woven fabric. The design that the activated carbon particles are coated with polydopamine in situ and covalently connected with the nylon 6 fibers through Schiff base bonds and Michael addition bonds is adopted, and firm loading of the activated carbon particles in the non-woven fabric can be achieved without adding an independent binder; the problem that the adsorption efficiency is reduced due to the fact that a traditional binder blocks activated carbon micropores is solved. The thickness of the polydopamine coating layer is controllable, the loading capacity of the activated carbon can reach 5-40 wt%, low filtering resistance and high adsorption efficiency are still kept under the high-loading condition, the spunlace reinforcing technology ensures the particle distribution uniformity and batch stability, the tensile strength is not lower than 5 N / 5 cm, and the air purification application value is wide.

The invention discloses a wafer-level ultra-flat clean graphene electron microscope grid and a preparation method and application thereof. The method comprises the following steps: placing a target transmission electron microscope grid on the surface of a two-dimensional material on a hard growth substrate; a substance capable of generating molecular self-assembly is dissolved in a low-surface-tension organic solvent to prepare a fitting solution, the fitting solution is dropwise added to the surface of the structure, and tight fitting at the normal temperature is achieved after the solution is volatilized; etching to remove the hard growth substrate; and finally, washing with deionized water and isopropanol. According to the method disclosed by the invention, by utilizing the self-assembly effect of molecules and the characteristic of a low-surface-tension solvent, glue-free and normal-temperature transfer is realized, polymer residues are avoided, and the ultra-flatness and high cleanliness of the graphene surface are ensured; the method has the advantages of high universality, simple process and high yield, and is particularly suitable for batch production of 4-inch wafers.

The invention relates to the technical field of hygienic products, in particular to an air-laid glue-free core body for solidifying fluff pulp and SAP (Super Absorbent Polymer) by using superfine melt-blown fibers. The preparation method comprises the following steps: forming fluff pulp fibers into a base material layer through air laying; applying the modified SAP material to the substrate layer; the polymer melt forms melt-blown fibers through a melt-blowing process, and the melt-blown fibers directly deposit and penetrate into the SAP-containing base material layer when the melt-blown fibers have thermal viscosity to form a three-dimensional intertwining structure; and finally, carrying out hot pressing treatment on the structure, and realizing integral solidification under the condition of no additional adhesive by utilizing the thermal viscosity of the melt-blown fibers. The modified SAP material is obtained through pretreatment of an epoxy compound and coating treatment of mixed slurry of nanocrystalline cellulose and a functional additive. The problems that SAP particles in a traditional core body are prone to migration, powder falling and gel blocking are effectively solved through the glue-free solidification technology, and the obtained core body is high in absorption speed, low in back seepage amount, stable in structure and suitable for sanitary products such as paper diapers and sanitary napkins.

The invention belongs to the technical field of liquid cooling plates, provides a shielding method of a powder spraying liquid cooling plate, and solves the technical problems of convenience of continuous shielding and rapid shielding removal of the liquid cooling plate. The method comprises the following specific steps: (1) customizing spacing gummed paper; (2) overlapping and positioning the edge of the non-adhesive area of the interval adhesive paper and the edge of the powder spraying liquid cooling plate; and (3) shielding the to-be-sprayed surface of the powder spraying liquid cooling plate after positioning, and wrapping the back surface of the to-be-sprayed surface with redundant gummed paper to complete shielding. Aiming at the requirement that the periphery of the powder spraying liquid cooling plate needs to be shielded on the front and back surfaces and the side surfaces, shielding can be quickly carried out, the adhesive width on the two sides of the adhesive tape is the same as the shielding width, the middle non-adhesive area is reserved, and the product edge is used as a reference line to be aligned with the adhesive inner edge of the adhesive paper for positioning during shielding, so that the shielding tolerance is ensured. And meanwhile, shielding removal after powder spraying and baking is also friendly, so that the working hours of front and back surface shielding, side surface shielding and shielding removal are greatly saved, and the labor cost is saved.

The utility model belongs to the technical field of packaging boxes, and particularly relates to a glue-free dessert portable box structure which comprises a bottom plate, and four edges of the bottom plate are respectively connected with a left side plate, a right side plate, a front side plate and a rear side plate. The left side plate and the right side plate are in mirror symmetry in structure and each comprise a first rocking wing, a first rocking cover and a handle which are sequentially connected through creases. The structures of the front side plate and the rear side plate are in mirror symmetry, and each of the front side plate and the rear side plate comprises a second rocking wing and a second rocking cover which are connected through creases; first inserting tongues are arranged on the two sides of the first rocking wing respectively, inserting seams matched with the first inserting tongues in a clamped mode are formed in the second rocking wing, second inserting tongues are arranged on the lifting handle, inserting holes matched with the second inserting tongues in a clamped mode are formed in the second rocking cover, and hollow holes are formed in the lifting handle. According to the scheme, glue-free design is adopted, so that the portable box is more environment-friendly, and food in the portable box is not easy to pollute. And moreover, the integral structure adopts an integral design, so that the folding is convenient, and the bearing capacity of the integral structure is greatly improved.

The application discloses a glue-free adhering heterogeneous material and a preparation method thereof. The glue-free adhering heterogeneous material comprises a first heterogeneous material, a second heterogeneous material and a binding material, and various materials are connected through glue-free adhering. The preparation method comprises the following steps: conveying and extruding the first heterogeneous material, the second heterogeneous material and the first surface and the second surface of the binding material through a pressing equipment, so that the first heterogeneous material, the binding material and the second heterogeneous material are combined, and the first heterogeneous material, the binding material and the second heterogeneous material are connected and adhered through the foaming force generated by foaming physical and / or chemical reaction. The glue-free adhering technology is adopted, so that the environmental protection problem is solved, and the application approach of the product is improved.

The invention relates to the technical field of packaging materials, and discloses a high-barrier long-acting antibacterial composite environment-friendly packaging material and a preparation method thereof, and the high-barrier long-acting antibacterial composite environment-friendly packaging material is formed by compounding an inner-layer film, a middle-layer film and a surface-layer film. The inner-layer film is prepared from low-density polyethylene, metallocene linear low-density polyethylene and the like; the middle-layer film is a reactive compatibilization layer and comprises an ethylene-vinyl alcohol copolymer, polybutylene terephthalate adipate and a styrene glycidyl methacrylate copolymer, and compatibility and toughness are improved through an in-situ reaction; a surface film is a functional layer, phytic acid and bifunctional modified montmorillonite are utilized to construct a hybrid network, and the sedum sarmentosum extract and the chitosan quaternary ammonium salt are anchored. By adopting a step-by-step film preparation and hot-pressing compounding process, the obtained material has the characteristics of high barrier, high strength and long-acting bacteriostasis, and the glue-free compounding process is environment-friendly and safe.

The utility model relates to wet tissue packing technical field discloses a wet tissue cover and wet tissue packing, the upper cover of wet tissue cover is provided with the annular buckle of the lateral clamping of outer cover, the center is provided with the silica gel sealing plug of corresponding cooperation with the extraction mouth, the outer cover and inner cover center are provided with the extraction mouth, and the outer cover and inner cover are connected through the convex platform and the groove structure of mutual embedding and are buckled, the convex platform and the groove structure of mutual embedding include the first convex platform and the second convex platform of setting at the bottom surface of outer cover / the top surface of inner cover, the top surface of inner cover / the bottom surface of outer cover is provided with the first groove and the second groove of mutually corresponding embedding with the first convex platform and the second convex platform, the bag body of wet tissue packing is pressed and arranged in the first groove and / or the second groove with the first convex platform and / or the second convex platform, realizes reliable connection between bag body and wet tissue cover, realizes sealing, prevents the bag body from loosening, discards traditional glue sticking and label sealing mode, realizes glueless sealing and installation, is favorable for long -term stable sealing, has the characteristics such as simple structure, strong practicality, good use effect.

The invention relates to the technical field of composite materials, in particular to a production method of a glue-free bamboo fiberboard, which comprises a process of carrying out bio-enzyme pretreatment on bamboo fibers, and the process of bio-enzyme pretreatment comprises the following steps: step 1, mixing the bamboo fibers and a buffer solution with the pH value of 4.0-4.5 and the temperature of 45-50 DEG C in a container, putting a first magnetizing enzyme into the container, treating for 1.0-1.5 hours, and recovering the first magnetizing enzyme in a magnetic adsorption manner after the treatment in the step 1 is finished; step 2, putting a second magnetizing enzyme into the container, treating for 1.5-2.0 hours, and recovering the second magnetizing enzyme in a magnetic adsorption manner after the treatment in the step 2 is finished; step 3, reducing the temperature of the buffer solution to 30-35 DEG C, then putting a third magnetizing enzyme into the container, treating for 1.0-1.5 hours, and recovering the third magnetizing enzyme in a magnetic adsorption manner after the treatment in the step 3 is finished; and 4, the pretreated bamboo fibers are taken out, cleaned and dried.

The manufacturing process comprises the following steps: providing a first PET (Polyethylene Terephthalate) layer, a second PET layer and an active carbon resin layer between the first PET layer and the second PET layer; sequentially puncturing the three layers by adopting a special needle with barbs; the first silk thread is hooked out of the first PET layer through needle movement, and the second silk thread is hooked out of the second PET layer; the two silk threads are entangled in the activated carbon resin layer; and glue-free connection is formed through multi-point repetition. The process does not need an adhesive, is environment-friendly and efficient, is firm in fiber bridging, and is suitable for an air purification material.

The invention relates to a device (2) comprising two elements (4, 6) and a hinge (8), the hinge (8) connecting the two elements (4, 6) at an axis of rotation (A-A'), each element (4, 6) having a base (10) and a side wall (12) surrounding the base (10), the base (10) and the side wall (12) together defining an internal housing (14), each element (4, 6) having an external surface (15), the device (2) further comprising at least one covering (12A, 12B), the covering (12A, 12B) covering at least the external surface (15) of one of said elements (4, 6) and having at least one edge folded towards the internal housing (14) of said element (4, 6) and arranged within said internal housing (14), the device (2) further comprising at least one frame-forming piece arranged within of one of the elements (4, 6), said part being configured to wedge said at least one edge of the coating (12A, 12B) against the side wall (12) of said element (4,6). Figure from the summary: Fig. 3,

The invention discloses a pressure-sensitive adhesive layer, a polyurethane dressing containing the pressure-sensitive adhesive layer and a preparation method of the pressure-sensitive adhesive layer and belongs to the field of polyurethane dressings, and the overlook plan of the pressure-sensitive adhesive layer comprises a plurality of closed patterns; the edge of the closed pattern is coated with a pressure-sensitive adhesive, and the inner area of the closed pattern is not coated with the pressure-sensitive adhesive. Through the structural design of the pressure-sensitive adhesive layer, a plurality of microstructure units with independent closed patterns form a reasonably distributed non-adhesive area and an adhesive area. When the polyurethane breathable film is applied to the polyurethane dressing, the polyurethane breathable film has proper adhesive force, and meanwhile, the functions of preventing bacterial infection of a wound and reducing the influence of a pressure-sensitive adhesive layer on the breathability and moisture penetrability of the polyurethane breathable film on the whole polyurethane dressing can be remarkably improved, so that the wound rehabilitation rate and the use comfort of a patient are improved, and the application prospect is wide.

An adhesive-free packaging structure 100 includes a substrate 110 comprising a natural fibre, at least one foldable area 130 including at least one folding line, and at least one first connecting stru

Embodiments of the present application provide a mask, a gluing method and a display panel, and relate to the technical field of display. The embodiments are used to solve the problem of a large slope angle of organic glue in the prior art. The mask comprises a shielding portion, an edge of the shielding portion has a plurality of protrusions, the protrusions extend along a first direction, and the first direction is a direction from the shielding portion to a direction away from the shielding portion. By arranging the plurality of protrusions on the edge of the mask, the organic glue protrusions can be formed on the edges of the organic glue pattern on the to-be-glued base layer. The self-leveling property of the organic glue protrusions is utilized, so that the glue-free areas between the organic glue protrusions are filled with the peripheral organic glue, thereby the thickness difference between the boundary of the finally formed organic glue and the middle part of the organic glue can be reduced, and further the slope angle of the boundary of the organic glue can be effectively reduced.

The utility model relates to the technical field of mattress equipment, in particular to a non-gel bed net structure which comprises an outer sleeve, and a flexible layer, a water absorption layer, a first elastic layer, a cushion layer, a second elastic layer and another cushion layer which are sequentially arranged in the outer sleeve from top to bottom. The flexible layer comprises a cashmere layer, a wool and cotton mixed layer and a horsetail hair layer which are sequentially laid from top to bottom. And the horsetail hair layer is arranged above the water absorption layer. The flexible layer, the water absorption layer, the first elastic layer, the cushion layer, the second elastic layer and the other cushion layer which are connected into a whole through manual lines are placed in the outer sleeve to be wrapped and formed. The flexible layer is filled with animal and plant fibers such as the cashmere layer, the wool and cotton mixed layer and the horsetail hair layer, and is healthier, environmentally friendly, breathable, higher in softness and better in comfort, the sleeping time can be shortened, and sleeping health is facilitated. Moreover, the water absorbing layer can effectively absorb moisture and release sweat, so that sweat is prevented from permeating into the spring, and the service life of the spring can be prolonged.

The invention relates to the technical field of medical material preparation, in particular to a non-adhesive ultrasonic composite medical material and a preparation method thereof. When the material is prepared, after the material is put into a reaction kettle, an ultrasonic generator on the reaction kettle is started, proper ultrasonic frequency and power are set, ultrasonic waves are spread in liquid, then local high-pressure and low-pressure areas are generated, so that microbubbles are formed, the microbubbles can interact with particles, the particles can be continuously thrown and collided in water, and the particles are uniformly dispersed in water. Meanwhile, a sterile magnetic stirrer on the reaction kettle is started, ultrasonic waves are assisted to perform more uniform mixing in the reaction kettle, compared with traditional single stirring, the mixing uniformity is better, the efficiency is higher, the overall preparation time is shortened, the uniform mixing efficiency of materials can be further improved in the production process, and the production cost is reduced. And the subsequent material composite processing efficiency can be improved.

The invention belongs to the field of functional non-woven materials, and provides a non-gel process activated carbon non-woven fabric, which adopts the design that an activated carbon silica network coating layer intermediate and a silanized polypropylene fiber intermediate are synergistically fixed, and a silica network coating layer is formed on the surface of activated carbon through tetraethoxysilane sol-gel. 3-aminopropyltriethoxysilane is used for carrying out surface silanization treatment on the polypropylene fiber, Si-O-Si covalent bond connection is formed through silanol condensation reaction in the hot-pressing spot welding process to realize non-adhesive fixation, and collaborative optimization of high carbon loading amount, low pressure drop, high air permeability, strong fixation and powder falling resistance and opening of an activated carbon pore structure is realized; the problems that a traditional activated carbon non-woven material needs an organic binder, so that the adsorption performance is reduced, fixation is not firm, powder is prone to falling off, a hot-pressing window is narrow, and the structure is uneven are solved, and the wide application value in the fields of air purification, water treatment, protective materials and the like is achieved.

The invention relates to a preparation method of a novel coating material packaging structure. The preparation method comprises the following steps: step 1, preparing graphene aerogel; step 2, surface modification of graphene aerogel and construction of a liquid metal network; step 3, preparing a novel self-repairing hygroscopic random hyperbranched polymer; and step 4, carrying out glue-free packaging on the novel self-repairing hygroscopic random hyperbranched polymer and the outer surface of the graphene aerogel to obtain the novel film-coated material packaging structure. In order to solve the problems that after a traditional graphene-liquid metal composite material is packaged, the thermal resistivity is improved, and the heat dissipation efficiency is low, a novel coating material is used for packaging, meanwhile, the structure of the composite material is changed, and liquid metal-graphene aerogel is adopted to achieve the purposes of reducing the thermal resistivity and improving the overall heat transfer efficiency.

The invention discloses a novel composite material with the same components as well as a preparation method and application of the novel composite material. The novel composite material is of a multi-layer structure, and each layer takes the same resin matrix as a main component and is compounded and combined under the adhesive-free condition through a hot melting process. The structure at least comprises a matrix layer and a composite layer, the matrix layer is composed of pure matrix resin, the composite layer is composed of a composite material containing the matrix resin and a toughening material, the gram weight of the composite layer is larger than that of the matrix layer, and the content of the matrix resin is not lower than 95%. The surface of the composite layer is provided with an air bag structure, preferably a micro-convex lattice air cavity. The preparation method comprises the following steps: respectively carrying out extrusion molding on the matrix layer and the composite layer, and realizing hot-melting lamination by utilizing waste heat of a melt of the composite layer. The material is light in structure, excellent in buffering performance and firm in interlayer combination, and has stiffness and comfort; meanwhile, each layer is a same-component system, so that full recycling and reusing can be realized, and excellent environmental protection property and sustainable processability are realized.

The invention relates to a manufacturing machine (1) for manufacturing rod-shaped products (3) from a circulating strand (9) of a circulating strip (2) which is bonded into a tube, having a device (15) for applying a glue track (13) to the strip (2), a gauge section (10) in which the circulating strip (2) can be shaped by forming and bonding into the circulating strand (9), and a cutting device (4) which cuts the rod-shaped products (3) from the circulating strand (9) in predetermined lengths, wherein the device (15) for applying the glue track (13) is formed by a device (15) which applies glue intermittently with the formation of glue-free sections (14) which are arranged particularly regularly at intervals, and is provided with a sensor device (7) which is aimed at the circulating strip (2) or the circulating strand (9) and generates a signal depending on the passage of a glue-free section (14), and the device (15) for applying the glue track (13) is set up to vary the length of the glue-free sections (14) in the longitudinal direction of the glue track (13).

The utility model discloses a chitosan gel dressing, which comprises a sealed bag, a rubber pad and a storage device are contained in the sealed bag, the rubber pad comprises a breathable anti-seepage layer, a rubber area and a non-rubber area are arranged at the bottom of the breathable anti-seepage layer, the non-rubber area is located at the middle position of the breathable anti-seepage layer, the rubber area surrounds the non-rubber area, a feeding port is arranged on the breathable anti-seepage layer at the non-rubber area, a rubber ring is fixed on the feeding port, a release paper is pasted on the breathable anti-seepage layer through the rubber area, the storage device is tubular, chitosan gel is stored in the storage device, a discharging port is arranged at one end of the storage device, a pushing port is arranged at the other end of the storage device, and a pipe cover is arranged on the discharging port. The dressing provided by the utility model is convenient to use, can be operated by patients themselves, can avoid scratching of the gel, can avoid rapid evaporation of the gel, can prolong the effective time of the dressing, can improve the bacteriostatic and curing effects of the dressing, and has better use effect.

The invention relates to the related technical field of packaging paper trays, in particular to a polymer formula of an environment-friendly fireproof flame-retardant paper tray and a production process of the environment-friendly fireproof flame-retardant paper tray. 30 to 60 parts of an inorganic flame retardant; 0.5 to 3 parts of a polymer retention aid; 5 to 15 parts of bio-based reinforced fiber; 0.1 to 1 part of a pH regulator; and 200 to 500 parts of water. According to the high-molecular formula and the production process of the environment-friendly fireproof flame-retardant paper tray, a nanoscale inorganic flame retardant is synergistically compounded in plant fiber pulp to realize intrinsic flame retardance, and two-stage vacuum adsorption molding, embedded enhancement and non-adhesive hot-pressing compounding processes are combined; and a multi-layer integrated structure with the honeycomb hole anti-collision corners, the arched supporting network and the buffering protruding blocks is constructed, and finally the paper support product which is high in strength, resistant to flame, fine in buffering and degradable in the whole life cycle is obtained.

The present application relates to a recyclable adhesive-free integrally formed sole and a mold for manufacturing same. The recyclable adhesive-free integrally formed sole comprises a wear-resistant outsole and an elastic midsole, wherein the elastic midsole is arranged on the wear-resistant outsole, and the wear resistance of the wear-resistant outsole is greater than that of the elastic midsole. A TPU sole sheet is cut into the wear-resistant outsole, the TPU sole sheet is placed in a mold having a formed pattern, and then the mold is filled with ETPU foam particles, so that the ETPU foam particles are laid on the upper surface of the wear-resistant outsole 2; and steam is introduced into the mold, so that the ETPU particles are formed into the elastic midsole.

The present invention relates to a pharmaceutical composition formulated to be administered by intranasal route comprising, as active compound(s), at least one compound chosen from the compound of the following formula (I), the fumarate salt of the compound of the following formula (I): (I) and mixtures thereof, at least one pharmaceutically acceptable excipient, said composition being in the form of a gel free of hydroxypropylmethylcellulose.

The utility model provides a protective foam device for a refrigerator glass shelf and a glass shelf assembly. The protective foam device comprises a foam body, the foam body is used for covering at least two adjacent surfaces of a refrigerator glass shelf, and an adhesive structure is arranged on the surface, facing the glass shelf, of the foam body. The foam body has a first structural feature in the middle area corresponding to the thickness direction of the glass shelf, has a second structural feature on at least one end part, and has a stress release feature on the inner side of a decorative strip of an adjacent refrigerator glass shelf; the first structural feature comprises a non-adhesive section or a low-adhesion section or a flexible section; the second structural feature comprises a low-adhesion section or an adhesive-free section; the stress relief feature is at least one of a cut, a groove, or a low density section.

This utility model discloses a tear-resistant wet wipe opening sticker, belonging to the field of packaging technology. The tear-resistant wet wipe opening sticker includes a wet wipe bag, with the opening sticker located at the top of the bag. A glue removal area is located on the right side of the opening sticker, and a damage prevention area is connected to the right side of the glue removal area via a dotted break line. The left edge of the opening sticker is fixedly adhered to the left edge of the top of the wet wipe bag, and the adhesive length between the opening sticker and the wet wipe bag accounts for 1 / 3 of the total length of the top of the wet wipe bag. The glue removal area is a glue-free structure, and its upper surface is printed with markings indicating the tear position. This utility model, without adding a complex structure, solves the problems of existing wet wipe opening stickers being easily torn, easily broken, and having poor sealing after repeated use through a synergistic design of dotted break lines to prevent accidental tearing, easy positioning of the glue removal area, breakage resistance of the damage prevention area, and weather resistance of PET material. It also takes into account production convenience and has a wide range of applications.

This invention relates to the field of biomedical materials technology, specifically disclosing a biomimetic ear acupoint patch with self-adhesion and conductivity, and its preparation method. The biomimetic ear acupoint patch comprises, from the skin-adhesive side to the outer side, a biomimetic adhesive conductive layer, a flexible base layer, and an electrode interface layer. The biomimetic adhesive conductive layer is composed of photocurable resin, a photoinitiator, liquid metal microdroplets, and thiolized carbon nanotubes. The preparation method includes: preparing a conductive precursor solution, coating and pre-curing, hot-pressing and transferring a micropillar structure, curing and molding, and post-treatment. This invention utilizes a "thiol-ene" click chemistry reaction to construct a covalently bonded three-dimensional network between liquid metal, carbon nanotubes, and a resin matrix, solving the problems of filler agglomeration, interface debonding, and unstable conductivity in traditional physical mixing. This results in a patch with adhesive-free physical self-adhesion, high conductivity stability, and excellent biocompatibility, making it suitable for ear acupoint electrostimulation therapy.

The invention relates to the technical field of optical communication device packaging, in particular to a breathable dustproof structure of a glue-free optical fiber array coupler, which comprises a modified ePTFE film tape, a composite adhesive layer, micro support bumps and a circumferential hydrophobic protective layer, the modified ePTFE film belt covers the periphery of the joint part of the optical fiber array unit and the lens array, and the surface of the modified ePTFE film belt is subjected to hydrophobic and oleophobic modification treatment; the composite adhesive layer is coated on the edges of the two sides of the modified ePTFE film tape and is of a composite structure of a fluorine coupling agent bottom coating and a low-stress low-precipitation organic silica gel layer, and the modified ePTFE film tape is hermetically adhered to the surfaces of the optical fiber array unit and the lens array body through the composite adhesive layer. And a semi-closed protection cavity is formed above the non-adhesive light transmission area. According to the invention, the all-directional anti-pollution effect can be realized, the performance is stable, the structural anti-vibration reliability is improved, stress-free protection is realized, the long-term stability of the coupling precision of the optical fiber array unit and the lens array is ensured, and the adaptability is high.

The present disclosure relates to the packaging technical field, especially to a kind of packaging box.The packaging box provided by the present disclosure includes box body, cover plate and adhesive piece, box body is formed with the accommodating body with opening, accommodating body is equipped with first clamping portion;Cover plate is covered in the opening, and is rotationally connected with box body, the cover plate is equipped with second clamping portion, and the second clamping portion is clamped with the first clamping portion;Adhesive piece includes first part and second part, the first part is connected with the box body, the second part is connected with the cover plate, the adhesive piece includes glue-free area, and the glue-free area is located at the edge of the first part or the second part.The clamping cooperation of first clamping portion and second clamping portion constructs stable mechanical locking system, and the detachable design of adhesive piece second part and the outer surface of cover plate forms additional protective barrier, which is difficult to separate without damage, effectively prevents illegal opening, and can realize the balance of opening convenience and anti-theft performance.