88results about How to "Improve sticking power" patented technology

The invention discloses a single-component low temperature self-crossing emulsion adhesive for paper and plastic compounds and a preparing method thereof. The raw materials of the self-crossing emulsion adhesive comprise the following components in part by weight: 100-150 parts of de-ionized water, 0.8-3.0 parts of emulsifier, 20-40 parts of nuclear layer monomer, 30-50 parts of interlayer monomer, 20-40 parts of shell layer monomer, and 0.2-0.6 part of initiator. The invention uses a small amount of anionic emulsifier to prepare nuclear emulsion, uses polymerisable emulsifier to prepare interlayer and shell layer pre-emulsion, and adopts semi-continuous seeded low emulsion polymerization process to prepare emulsion particles that have a three-layer core-shell microstructure to obtain the exquisite and stable emulsion. The product has no organic solvent, and does not release methanal, contains no APEO and no phthalate; the film coating has high transparency, high water resistance and high heat and humidity resistance; and the emulsion adhesive is applied to plastic and paper compounds, has high adhesive strength, peel strength and permanent adhesion, is also compatible to oil and ink and has high oil/ink transferring rate.

The invention discloses a water-based plastic-plastic compound adhesive for food and drug flexible packages and a preparation method thereof. The preparation method comprises the following steps of: carrying out pre-emulsification by using 20-30 parts by weight of deionized water, 0.4-1.0 part by weight of emulsifying agents and 75-90 parts by weight of monomer mixtures to obtain a pre-emulsion A; then carrying out the pre-emulsification by using 5-8 parts by weight of the deionized water, 0.2-0.3 part of the emulsifying agents and 3-20 parts by weight of the monomer mixtures to obtain a pre-emulsion B; preparing an initiator water solution C by using 1-3 parts by weight of the deionized water and 0.2-0.8 part by weight of initiators; and dropping the monomer mixture I with lower polarity and the monomer mixture II with higher polarity step by step by adopting a pre-emulsification seed emulsion polymerization process to obtain the water-based plastic-plastic compound adhesive for the food and drug flexible packages. The water-based plastic-plastic compound adhesive disclosed by the invention has the advantages of no organic solvent, no formaldehyde release, good adhesivity and high stripping strength and permanent adhesion and can be applied to a flexible package industry and substitute for a solvent type two-component polyurethane adhesive maturely applied to the present market.

The invention relates to a hot-melt pressure sensitive adhesive, and concretely relates to a hot-melt pressure sensitive adhesive for adhesive tapes, and a preparation method thereof. The hot-melt pressure sensitive adhesive comprises a styrenic thermoplastic elastomer SIS, a styrenic thermoplastic elastomer SBS, petroleum resin, rosin glyceride, a primary antioxidant, an auxiliary antioxidant anda softener, wherein the styrenic thermoplastic elastomer SIS is a linear structure, the styrene content is 20-28%, and the diblock content is 20-28%; and the styrenic thermoplastic elastomer SBS is astar structure, the styrene content is 28-32%, and the diblock content is 12-18%. The purpose of the invention is to solve the problem of poor use performance of the adhesive tapes, caused by failedcombination of the initial adhesion, the permanent adhesion and the aging resistance of existing hot-melt pressure sensitive adhesives for adhesive tapes. The initial adhesion (the initial adhesion includes ring initial adhesion and 180 DEG peel strength) of the hot-melt pressure sensitive adhesive of the invention meets use requirements, and has a high adhesion and a good aging resistance. The present invention also provides the preparation method of the hot-melt pressure sensitive adhesive for adhesive tapes.

The invention relates to solvent-free ultraviolet light dual-curing hot melting pressure-sensitive adhesive, which is prepared from acid-free (methyl) acrylate copolymer (A) capable of being subjectedto ultraviolet light curing by a free radical, acid-free (methyl) acrylate copolymer (B) capable of being subjected to ultraviolet light curing by a positive ion and a positive ion photoinitiator (C)which occupies 0.1-1.0% of the mass of the composite, and the ratio of a monomer A to a monomer B in the composite can be regulated at will. The pressure-sensitive adhesive formula prepared from thecomposite is subjected to the ultraviolet light curing, a peculiar high molecule interpenetrating network structure is formed, and the bonding strength and the permanent adhesion of the pressure-sensitive adhesive can be effectively improved.

The invention relates to the technical field of chemical modification high polymer materials, and in particular to a hot melt adhesive for waterproof roll and a preparation method of the hot melt adhesive. The hot melt adhesive is prepared from the following components in parts by weight: 50-200 parts of butadiene styrene rubber, 200-300 parts of benzene alkene thermoplastic elastomer rubber, 200-300 parts of tackifying resin, 5-20 parts of an antioxidant, 5-20 parts of an ultraviolet light absorbent, 0-200 parts of naphthenic oil, 0-200 parts of base oil and 100-200 parts of polyisobutene, wherein the tackifying resin is one or any combination of petroleum resin, hydrocarbon resin and monomer resin. As the butadiene styrene rubber and the benzene alkene thermoplastic elastomer rubber are compounded as a rubber matrix, the hot melt adhesive is high in compatibility; due to addition of the petroleum resin, the hydrocarbon resin and the monomer resin as the tackifying resin, the initial adhesion, the cold resistance, the thermal stability and the adhesion strength of the hot melt adhesive can be improved, the volatility of the hot melt adhesive is reduced, and particularly the adhesion property of the hot melt adhesive in damp building environments such as cement, concrete and big sand can be improved.

The invention discloses a high-performance optical adhesive as well as a preparation method and application thereof. The high-performance optical adhesive is obtained through a chemical reaction of acomposition, and the composition comprises an acrylic polymer monomer, a multifunctional monomer, a polar group-containing monomer, a silane coupling agent, a cross-linking agent, a chain transfer agent, an initiator and a solvent. The adhesive film prepared by the invention is a pressure-sensitive adhesive film, the initial adhesive force is moderate, no displacement is generated during lamination, the lamination process is similar to the existing process, and no new equipment needs to be added.

The present invention provides an OPP release film, wherein the thin film layer comprises the following components: OPP, OPP weathering resistance masterbatch, nanometer silica, 3-aminopropyltriethoxysilane, butyl acrylate, methyl methacrylate 15, octadecyl methylacrylate, polyethylene glycol, ethanol, deionized water, natural latex, a defoamer and a thickening agent, the release layer comprises the following components: an aqueous polyvinyl acetate emulsion, an aqueous polyurethane emulsion, an aqueous modified polyvinyl alcohol solution, natural latex, 3-aminopropyltriethoxysilane, a defoamer and a thickening agent, and the aqueous modified polyvinyl alcohol solution comprises polyvinyl alcohol, deionized water, and modified calcium carbonate. The release film of the present invention has characteristics of good peel strength, good mechanical property, and good weather resistance, and is the release film having the good comprehensive performance.

The invention discloses a formula of an environment-friendly particle hot-melt type pressure-sensitive adhesive. The hot metal adhesive is prepared from the following components in parts by weight: 5-8 parts of polystyrene-polyisoprene-polystyrene segmented copolymer, 5-8 parts of styrene-ethylene/butadiene-styrol copolymer, 5-10 parts of ethylene/vinyl acetate copolymerized resin, 30-40 parts of a softener, 0.5-1 parts of an antioxidant, 53-68 parts of a thickening agent, and 2-5 parts of polyisobutene. The invention further provides a method for preparing the environment-friendly particle hot-melt type pressure-sensitive adhesive. According to the formula and the preparation method disclosed by the invention, the particle hot-melt type pressure-sensitive adhesive is prepared by mixing a reproducible naturally synthesized epoxy plant oil as a raw material, synthetic rubber and resin as well as rubber oil, so that the problems that in the current pressure-sensitive adhesive industry, most of the raw materials cannot be recycled and toxic reagents are added in the process can be solved; and the product is environment-friendly, safe and harmless, easy to adhere, low in possibility to remove and non-destructive while being peeled off, and can be widely applied to the fields of sanitary material, medical treatment and the like.

The invention provides a multi-component self-adhesive product, wherein an adhesive layer is at least divided into a plurality of components such as several A component units and several B component units, etc.; the A component units and the B component units are arranged at intervals and are respectively coated on the backside of a surface material layer. The invention improves the initial viscidity and hold tack of the self-adhesive at the same time, thereby realizing fast and firm automatic labeling; moreover, the invention is suitable to paste A type material and B type material, in particular to be used in the anti-fake field.

The invention relates to a hot-melt pressure-sensitive adhesive, in particular to a modified hot-melt pressure-sensitive adhesive and a preparation method thereof. The modified hot-melt pressure-sensitive adhesive comprises the following components: a styrene thermoplastic elastomer, petroleum resin, Fischer-Tropsch wax, pentaerythritol ester, a main antioxidant, an auxiliary antioxidant and a softener; wherein the styrene thermoplastic elastomer is of an SIS linear structure, the content of styrene is 15%-21%, and the content of diblock is 50%-75%. The C5 petroleum resin and the pentaerythritol ester are dissolved in both the rubber phase (polyisoprene phase) and the hardness phase (polystyrene phase) of the thermoplastic elastomer. The two tackifying resins act together to improve the compatibility of the hot melt pressure sensitive adhesive. The raw materials cooperate with each other to obtain the hot melt pressure sensitive adhesive which has good fluidity, meets the use requirements of adhesive force, does not increase peel strength with time, and can be peeled off from the substrate cleanly.

The invention discloses an environmentally friendly release film, which comprises a film layer and a release layer located on the film layer. The release layer comprises the following components in proportion by weight: 40 parts of water-based polyethylene wax emulsion; water-based polyurethane emulsion 50 parts; 25 parts of water-based modified polyvinyl alcohol solution; 7 parts of natural latex; 4 parts of silane coupling agent; 0.4 part of defoamer; 0.4 part of thickener; It includes the following components: 90 parts of polyvinyl alcohol; 750 parts of deionized water; 40 parts of modified calcium carbonate. The environmentally friendly release film of the invention has the characteristics of high peel strength and high tensile performance, and can be widely used in various fields of electronics, communication, machinery and the like.

The invention discloses a sulfur-free polyacrylate emulsion pressure-sensitive adhesive and preparing method thereof. The sulfur-free polyacrylate emulsion pressure-sensitive adhesive includes the following raw materials in parts by weight: 95-100 parts of sulfur-free polyacrylate emulsion, 0.05-1.0 part of HD-M wetting agent and 0.05-0.2 part of mineral oil defoamer. According to the invention, raw materials such as the sulfur-free polyacrylate emulsion emulgator, HD-M wetting agent and azo initiator are adopted, and the introduction of sulfur is completely avoided, so that the problems of yellowed emulsion films and color change caused by the contact with metal base materials are solved, the appearance of used products is improved; selected materials are reasonably matched, a high-transparency adhesive tape can be obtained, besides, the peel strength and permanent adhesion of the adhesive tape are higher.

The invention provides a water-based environment-friendly adhesive suitable for adhesion between a ground decoration layer and a cushion layer. The adhesive is prepared from following components by weight through evenly mixing: 35%-60% of an acrylic resin emulsion, 10%-50% of a tackifying resin emulsion and 2%-10% of a plasticizer, wherein the acrylic resin emulsion is one or more of a styrene-modified acrylic resin emulsion, a fluorine-modified acrylic resin emulsion, a polyurethane acrylic resin emulsion and a silicone-modified acrylic resin emulsion which have the glass transition temperature ranging from subzero 30 DEG C to 0 DEG C, the solid content percentage ranging from 57wt% to 75wt% and the molecular weight ranging from 100,000 to 500,000; the tackifying resin emulsion is one or more of a petroleum resin emulsion, a terpene resin emulsion and a rosin resin emulsion which have the softening temperature ranging from 20 DEG C to 80 DEG C, the solid content percentage ranging from 35% to 55% and the molecular weight ranging from 2,000 to 3,000; the plasticizer is one or more of a benzoate plasticizer, a phthalic acid ester plasticizer, a polyester plasticizer and a polyol ester plasticizer. The adhesive has good initial adhesion and wonderful flexibility, can be uncovered and adhered repeatedly and can be produced with the simple production technology.

The invention discloses a high-performance left and right paste hot melt adhesive and a preparation method thereof. The high-performance hot melt adhesive comprises the following components in percentage by mass: 15-35% of a polymer, 3-10% of butadiene styrene rubber, 10-25% of a plasticizer, 25-55% of tackifying resin, 0.1-2% of an antioxidant and 1-5% of poly-alpha-methylstyrene resin. The sum of the mass percentages of the components is 100%. According to the prepared high-performance left and right paste hot melt adhesive, excellent mechanical properties are achieved through the butadiene styrene rubber and the fully hydrogenated petroleum resin, so that the hot melt adhesive has excellent initial adhesion and stripping force, and by adding SEBS or SBS or SIS with high tensile strength and matching with the poly-alpha-methylstyrene resin, the hot melt adhesive can resist high temperature and has excellent holding power and high thermal stability; and the hot melt adhesive is applied to the fields of magic buckles of paper diapers, PP stickers, magic tapes and the like , and the function of repeated sticking can be achieved through the left and right paste hot melt adhesive.

The invention relates to glue with high permanent adhesive force, which is prepared from the following components in percentage by mass: 13-17 percent of natural rubber, 18-22 percent of petroleum rubber SIS, 18-22 percent of petroleum resin, 18-22 percent of naphthenic oil, 18-22 percent of natural terpene resin, 0.5-1.5 percent of antioxidant, and 3.5-4.5 percent of rubber accelerator. The glue has the beneficial effects that packed boxes are difficult to curl and permanent adhesive force is improved to above 100H from below 3H; the glue is difficult to age; the fusing property of molten raw materials is good; the temperature resistance and weather resistance of the glue are stable; and nationalized natural resources are fully utilized, production cost is effectively reduced and market competitiveness of products is improved.

The invention discloses a low-VOC environment-friendly sterilizing adhesive tape which comprises a base material layer, sterilizing layers, low-VOC adhesive layers and a release type layer, wherein the base material layer is of a double-layer compound structure and comprises a nonwoven fabric layer and a PET membrane layer; the sterilizing layers are respectively covered to the upper surface and the lower surface of the base material layer to form a first sterilizing layer and a second sterilizing layer; the low-VOC adhesive layers are respectively adhered to the other surface of the first sterilizing layer and the other surface of the second sterilizing layer to form a first low-VOC adhesive layer and a second low-VOC adhesive layer; the release type layer is adhered to the other surfaceof the second low-VOC adhesive layer. By means of the compound base material layer, the adhesive tape disclosed by the invention has certain softness and excellent fit and further has certain strength; by means of the design of the sterilizing layers, the adhesive tape not only has a function of inhibiting bacteria and virus breeding, but also has functions of adsorbing VOC gas and decomposing organic pollutant; by means of the low-VOC adhesive layers, VOC organic pollutants are greatly reduced.

The invention discloses a pressure sensitive adhesive with the high stripping force. The pressure sensitive adhesive is prepared from the following raw materials, in parts by weight: 45-55 parts of 2-ethylhexyl acrylate, 4-9 parts of acrylamide, 40-50 parts of butyl acrylate, 7-12 parts of hydroxypropyl acrylate, 3-7 parts of methyl acrylate, 70-90 parts of ethyl acetate and butanone with the massratio being 1 to 1, 1.3-2.2 parts of azodiisobutyronitrile, 0.6-1 part of 1-dodecanethiol and 3-5 parts of tuluene diisocynate. The pressure sensitive adhesive with the high stripping force has the good initial adhesion and persistent adhesion, the 180-degree stripping force is high and can be held at the temperature of 90 DEG C, and the pressure sensitive adhesive can adhere firmly, and has thegood anti-plasticizer property and temperature resistance. No benzene and methylbenzene serves as solvents in the synthesis process of the pressure sensitive adhesive, and the pressure sensitive adhesion is low in toxicity, environmentally friendly, and wide in application range.