Patents
Literature
Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Hiro

51results about How to "Viscous stability" patented technology

Production technology for high-viscosity CPP self-sticking protection film

The invention relates to a production technology for a high-viscosity CPP self-sticking protection film. The production technology includes the steps that firstly, a sticking-resisting layer raw material, a base layer raw material and a sticking layer raw material are added into a single screw extruder to be melted and plasticized, and the raw materials are filtered through a filter and then conveyed into a distributor to be subjected to interlayer proportional distribution; secondly, melts of the three layers of raw materials are conveyed to a die head to be evenly distributed and plasticized and are then extruded through a die lip, and the melts make contact with a main cooling roller to be cooled; thirdly, an obtained cast film is secondarily cooled through an auxiliary cooling roller, and then thickness adjustment is conducted; fourthly, annealing processing is conducted, flaw detection is conducted, and rolling is conducted. The production technology is simple in design, the operation efficiency is high, losses are small, the stability of the product quality is good, and cost is low. By means of the production technology, the prepared high-viscosity CPP self-sticking protection film can have extremely-low shrinkage, the flatness of a film body is good, viscosity is stable, and rolling and unrolling are convenient. In addition, the transparency of the product can be effectively improved, and the occurrence of problems of fish eyes, crystal points, black points, impurities and the like on the film body is inhibited.
Owner:昆山金华安电子科技有限公司

Self-adhesive protective film and preparation method thereof

InactiveCN107418486AExcellent peel strength stabilityViscous stabilityFilm/foil adhesivesSurface layerUltimate tensile strength
The invention belongs to the technical field of high polymer materials and discloses a self-adhesive protective film and a preparation method thereof. The self-adhesive protective film comprises a viscous layer, a sandwich layer and an outer surface layer which are sequentially in contact with one another, wherein the viscous layer is a Kraton viscous copolymer layer; the sandwich layer comprises one or more of PE, PP or a PE-PP copolymer; and the outer surface layer comprises one or more of PP, HDPE, LDPE, LLDPE or an LDPE-HDPE copolymer. The self-adhesive protective film is wide in viscosity and stripping strength adjustment range, has stable viscosity on polar or non-polar surfaces, and shows very good stability under a high-temperature condition. The preparation method of the self-adhesive protective film comprises the following steps: uniformly mixing the raw materials of the viscous layer, the sandwich layer and the outer surface layer by weight ratio, then sending the obtained mixture to a three-layered coextrusion film-blowing unit for extrusion film-blowing, and performing cooling. The one-step coextrusion process is adopted, so that the operation is simple and easy, the running efficiency is high, the loss is small, and the product quality is good in stability.
Owner:无锡市三力胶带有限公司

UV viscosity-reducing adhesive film applied to PVC substrate and used for film reversion of semiconductor chip, and preparation method thereof

The invention discloses an UV viscosity-reducing adhesive film applied to a PVC substrate and used for film reversion of a semiconductor chip. The UV viscosity-reducing adhesive film comprises a substrate layer, an adhesive layer and a release film layer, wherein the adhesive layer is positioned between the substrate layer and the release film layer, and the adhesive layer is prepared by coating the substrate layer with UV viscosity-reducing glue and conducting drying. The UV viscosity-reducing glue comprises the following components in parts by weight: acrylic acid glue, UV monomers or oligomers, a curing agent, a photoinitiator and a plasticizer, wherein the acrylic acid glue is prepared from the following components in parts by weight: butyl acrylate, vinyl acetate, acrylic acid, hydroxyethyl methacrylate and azodiisobutyronitrile. According to the invention, the hardness of the glue is effectively controlled through formula design of an acrylic polymer, oligomer selection and increase and decrease of a plasticizer content, and a designed formula is high in crosslinking density; the concentration of the plasticizer of the adhesive layer and the concentration of the plasticizer of the PVC layer are balanced by controlling the amount of the plasticizer, and after the adhesive layer is attached to the substrate layer, the adhesive layer cannot be affected by the plasticizer in the substrate layer; and therefore, the adhesive layer achieves the effects of stable viscosity and no adhesive residue.
Owner:CYBRID TECHNOLOGIES INC

Acrylic protective film for aluminum-plastic film manufacturing process and preparation method of acrylic protective film

The invention discloses an acrylic protective film for an aluminum-plastic film manufacturing process. The acrylic protective film comprises an antistatic layer, a base material layer and an adhesivelayer; two sides of the base material layer are coated with the antistatic layer and the adhesive layer respectively, and the adhesive layer is obtained by coating the base material layer with an acid-free acrylic adhesive and drying the base material layer. The acid-free acrylic adhesive comprises the following components in parts by weight: acid-free acrylic resin, toluene diisocynate, an auxiliary agent, a surfactant and ethyl acetate, wherein an acid-free acrylic glue is glue with the solid content of 20%. The antistatic treatment is carried out on the PET surface of the base material layer, so that the problem of lamination adsorption is effectively solved; meanwhile, the acid-free acrylic glue is prepared, the reaction with a CPP layer on the surface of the aluminum-plastic film is avoided, the viscosity is stable, and no residual glue is left after stripping; and in addition, when the acid-free acrylic glue is prepared, proper acrylic resin is selected; and toluene diisocynate is matched, so that the crosslinking degree of the glue can be reduced, and the glue has the characteristic of high wettability.
Owner:CYBRID TECHNOLOGIES INC

Preparation method of high heat-resistant antibacterial toy paint

The invention relates to a preparation method of high heat-resistant antibacterial toy paint, and belongs to the technical field of paint preparation. The preparation method comprises the following steps: using aloe leaves and rice leaves as raw materials to prepare a reaction mixture, then mixing the reaction mixture with ginkgo leaves and ginkgo tree roots and fermenting, adding aluminum chloride to obtain a reaction filtrate, and finally mixing the reaction filtrate with an organic solvent and other auxiliary agents and stirring to obtain the high heat-resistant antibacterial toy paint. Byextracting nutrients from the aloe leaves and generating organo-functional groups such as carboxyl groups, hydroxyl groups, phenolic hydroxyl groups on the surface, the adhesion between various molecules inside the paint is enhanced, and the adhesion between the paint and the toy material is improved. Meanwhile, the ginkgo tree grows a large amount of ginkgo biloba endophytic bacteria during the fermentation process, which helps to improve the antibacterial property. By introducing aluminium ions into the aloe nutrients and various fiber components, aluminium oxide grows on the surface of fiber and then toughness of the fiber is enhanced. Meanwhile, the toy paint has good heat resistance and has a wide application prospect.
Owner:常州环际商贸有限公司

A method for improving the stability of silicone pressure-sensitive adhesives for protective films

ActiveCN105441017BStable temperature resistanceImprove storage performanceAdhesivesCarboxylic acidKetone
The invention relates to a method for improving stability of an organosilicone pressure-sensitive adhesive for a protective film. The method comprises steps as follows: step 1), removal of water and hydroxyl: a water and hydroxyl removal agent containing organic acyloxy silane compounds is added to a reaction system to reduce water left in the adhesive and hydroxyl left on an adhesive structure; step 2), thorough inactivation of a catalyst: a) when primary amine or secondary amine is used as a condensation polymerization catalyst, an adhesive reaction system is kept at the temperature of about 70 DEG C at the nitrogen reaction atmosphere, primary amine or secondary amine and aldehydes, ketones or low-level carboxylic acid react to generate Schiff base, generated unstable Schiff base reacts with diethyl malonate, and Schiff base becomes beta-amino acid without catalytic activity; b), when secondary amine or tertiary amine is used as a condensation polymerization catalyst, acidic compounds which can react with secondary amine or tertiary amine to generate a stable compound are added to the reaction system; step 3), residual small molecular substances are removed in the vacuum state; step 4), neutralization of residual acidic compounds: sodium alcoholate is added to neutralize residual acidic compounds in the adhesive.
Owner:ANHUI MINGXUN NEW MATERIAL TECH

Circuit board, electronic device and packaging method

The embodiment of the invention provides a circuit board, electronic equipment and a package method, belongs to the field of semiconductor package. The circuit board comprises a substrate, wherein aninstallation surface of the substrate comprises an installation region, an electronic component is arranged on the installation region, a groove is formed in boundary of the installation region and isfilled with filling glue, a part of filling glue is arranged in the groove, and the other part of filling glue is exposed out of the installation surface and is in contact with the electronic component. A cover body of the electronic equipment is arranged at an opening of the groove, and the bending radius of a bending part is smaller than the width of the groove. A part of filling glue is arranged in the groove, the other part of filling glue is exposed out of the installation surface, the volume of the filling glue arranged on a surface of the substrate also can be reduced, thus, the volumeof the cover body can be further reduced, and the volume of the electronic equipment is reduced; and moreover, the bending part of the cover body is arranged at the opening of the groove, the volumeof the bending part of the cover body can be not too small, and insufficient strength of the bending part caused by excessively small volume of the bending part is prevented.
Owner:GUANGDONG OPPO MOBILE TELECOMM CORP LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products