6157 results about "Hot-melt adhesive" patented technology

A thin film device fabrication method in which a thin film device formed on a substrate are transferred to a primary destination-of-transfer part and then the thin film device is transferred to a secondary destination-of-transfer part. A first separation layer (120) made of such a material as amorphous silicon is provided on a substrate (100) which allows passage of laser. A thin film device (140) such as TFTs are formed on the substrate (100). Further, a second separation layer (160) such as a hot-melt adhesive layer is formed on the thin film devices (140), and a primary destination-of-transfer part (180) is mounted thereon. The bonding strength of the first separation layer is weakened by irradiation with light, and the substrate (100) is removed. Thus, the thin film device (140) is transferred to the primary destination-of-transfer part. Then, a secondary destination-of-transfer part (200) is attached onto the bottom of an exposed part of the thin film device (140) via an adhesive layer (190). Thereafter, the bonding strength of the second separation layer is weakened by such means as thermal fusion, and the primary destination-of-transfer part is removed. In this manner, the thin film device (140) can be transferred to the secondary destination-of-transfer part (200) while maintaining layering relationship with respect to the substrate (100).

The invention relates to photovoltaic modules with a specific thermoplastic adhesive layer and the production thereof.

Secure inlays for secure documents such as a passport comprising an inlay substrate may have laser ablated recesses within which a chip module is installed. Channels for an antenna wire may be formed in a surface of the substrate. Instead of using wire, the channels may be filled with a flowable, conductive material. Patches homogenous with the substrate layer may be used to protect and seal the chip and interconnection area. The inlay substrate may include two layers, and the antenna wire may be between the two layers. A moisture-curing polyurethane hot melt adhesive may be used to laminate a cover layer and the additional inlay substrate layers. The adhesive layer may include metal nanoscale powder and ink for electromagnetic shielding. Additional security elements may include material that is optically changeable by an electromagnetic field. Ferrite-containing layers may be incorporated in the inlay substrate.

A hot melt adhesive composition, comprising a blend of components including about 5% to about 50% by weight of an olefin block copolymer; about 10% to about 70% by weight of a first tackifying resin having a softening point of at least about 95° C.; about 0 to 65% of a second tackifying resin that is different than the first tackifying resin; about 0% to about 60% by weight of a plasticizer; about 0% to about 20% by weight of an aromatic reinforcing resin having a softening point equal to or higher than 115° C.; about 0.1% to about 5% by weight of a stabilizer; and about 1% to about 40% by weight of a secondary polymer that is different from the olefin block copolymer, the first and second tackifying resins and the reinforcing resin, having relatively low crystallinity, which low crystallinity is equal to or less than 250 Joules / gram, wherein the components total 100% by weight of the composition, and the viscosity of the composition is equal to or less than about 20,000 mPa·s at 163° C. Laminates, especially those used in disposable soft goods, and methods of making such laminates using the hot melt adhesive composition are also described. The adhesive composition and / or laminate may be used in making a variety of end products such as a disposable diaper, a sanitary napkin, a bed pad, a bandage, a surgical drape, a tape, a label, a plastic sheet, a nonwoven sheet, a paper sheet, a cardboard, a book, a filter, or a package.

Waxes prepared from hydrogenated plant oils, such as palm and soybean, are used as substitutes for petroleum derived waxes in hot-melt adhesive compositions. Unlike petroleum-derived or synthetic waxes, adhesive compositions comprising these waxes, which are obtained from naturally derived, renewable resources, achieve adhesion performance similar to conventional adhesives containing petroleum-derived waxes. The inventive waxes have a low iodine value (between 2-5), and melting points between approximately 120-165 degrees F. (Mettler Drop Point). These waxes comprise a triglyceride whose fatty acids are predominantly stearic acid (C18). The naturally derived waxes are used as an alternative to petroleum and synthetically derived waxes in the manufacture of adhesives used to bond paper, wood, glass, plastic and metal in a variety of manufacturing operations.

Incorporating organophilic clay into hot melt adhesive compositions, particularly those comprising semi-crystalline, thermoplastic polymers, greatly improves the adhesive properties in many respects. Some of these improvements are particularly beneficial to the specific use of hot melt adhesives filled with electrically conductive particles for use as electrically conductive adhesives.

The invention relates to unique applications for the novel high melt flow, low viscosity, selectively hydrogenated styrene-butadiene-styrene (hSBS) or selectively hydrogenated controlled distribution styrene-butadiene / styrene-styrene (hSBSS) block copolymers, wherein the melt flow rate of said block copolymer is at least 100 g / 10 min at 230° C. under 2.16 kg mass according to ASTM D1238. These block copolymers are novel and have the highest melt flow rate of any styrenic block copolymer also possessing high strength and elasticity. It has applications that prior to the present invention were not normally possible due to the normal low melt flow rate of styrenic block copolymers. The present invention also encompasses various fields of use such as a fiberglass hSBS or hSBSS reinforced mat, low viscosity hSBS or hSBSS coatings for industrial uses, hot melt adhesives prepared from hSBS or hSBSS blended with polyalpha-olefins, and elastic film, fiber, and nonwoven constructions using hSBS or hSBSS.

A peelable sealable co-extruded film, comprising: i. a skin layer capable of heat sealing against a rim of a container, to itself, or to another film and adapted to be peeled there from and comprising a hot melt adhesive resin; and ii. a core layer underlying said skin layer and comprising crystalline homopolymer polyethylene terephthalate; and a method for the preparation thereof.

Applicators and dispensing systems for dispensing liquid hot melt adhesives and methods of dispensing liquid hot melt adhesives. The dispensing system supplies the liquid hot melt adhesive in a non-activated state to the applicator. The liquid hot melt adhesive is processed to modify at least one activation-sensitive property before dispensing onto a substrate. The property may exhibit a temperature dependence, in which case the applicator or other structure near the applicator heats the liquid hot melt adhesive immediately before application. The property may exhibit a pressure dependence, in which case the applicator or other structure near the application applies pressure and / or shear forces to the liquid hot melt adhesive shortly before dispensing. Alternatively, a property that is both temperature and pressure dependent may be modified.

The invention discloses a double-layer composite hot melt adhesive film adhering metal and plastic, which is formed by compounding an upper adhesive film layer and a lower adhesive film layer, wherein the lower adhesive film layer is attached to a piece of release paper, the thickness of the composite adhesive film is 0.05 to 0.20 millimeter, the upper adhesive film layer is a hot melt adhesive layer adhered with the metal, the thickness of the upper adhesive film layer is 30 to 60 percent of the thickness of the composite film, the lower adhesive film layer is a hot melt adhesive layer adhered with the plastic, the thickness of the lower adhesive film layer is 40 to 70 percent of the thickness of the composite film, and the lower adhesive film layer is attached to a piece of glassine release paper. The double-layer composite hot melt adhesive film directly compounds two modified hot melt adhesives with different adhesive properties, is adhered with the release paper to prevent rolling from adhering and the adhesive film from being damaged, reduces application of a middle isolating layer, reduces the thickness of the composite adhesive film, and is prepared by once casting through coextrusion casting equipment or twice casting through common coextrusion casting equipment. The double-layer composite hot melt adhesive film can be used for composite adhesion of metallic materials such as aluminum, stainless steel and the like and plastic such as ABS, PVC, PET and the like, is particularly suitable for mutual adhesion between sheets, plates and films of the metal and the plastic, and has simple and convenient operation and no pollution.

The present invention relates to a new-type thermosol using attapulgite as additive and its preparation method. Its composition includes: main body resin ethylene and polyvinyl acetate copolymer EVA, etc. 20-50%, tackifying resin 20-50%, diluent 10-30%, attapulgite 2-40% and anti-oxidant 0.1-1%. Its preparation method includes the following steps: firstly, melting diluent, adding main body resin, when the main body resin basically molten, progressively adding tackifying resin and making reaction for 0.5-1.5 h at 130-180 deg.C, then adding attapulgite and anti-oxidant, further reacting for 0.5-1 hr., discharging material, forming and granulating so as to obtain the invented product.

A method for packaging plastic material using a film to surround the material, and more particularly to a method for packaging hot melt adhesives, the resulting package formed thereby, and the film composition used therein. The method is preferably a coextrusion process for packaging a pressure sensitive hot melt adhesive by extruding a hot melt adhesive through a die orifice, and coextruding a wax-based polymeric film to surround the hot melt adhesive. The coated adhesive may then be formed into individual packaged units having a finite size and shape. The polymeric film comprises a composition having at least 25% by weight of a wax material, an enthalpy of fusion of at least about 100 J / g, and an elongation value at break of at least about 100%. Any type of hot melt adhesive formulation can be packaged or surrounded by the polymeric film in the process. Also, the specific enthalpy of fusion desired and / or elongation value at break desired for the polymeric film can be obtained by blending an appropriate amount of partially crystalline ethylene-based polymer together with a thermoplastic elastomeric block copolymer and / or an ethylene based or propylene-based elastomer.

A hot melt adhesive composition that includes a non functionalized amorphous poly alpha olefin polymer, a second polymer selected from the group including polypropylene homopolymers, polypropylene copolymers and combinations there of, a functionalized wax and a second wax.

An adhesive composition including an atactic polymer, an isotactic polymer, and an elastomeric base polymer. The composition may also include a high softening point tackifier resin, a low softening point additive and / or other additives, such as an antioxidizing agent, a plasticizer, mineral oil, color pigment, filler, polymer compatibilizer, or a combination of any of these additives. Facing layers, particularly stretchable and / or elastomeric substrates, can be bonded with the adhesive composition. The adhesive composition maintains high bond strength, even at body temperature and after initial stretching. Such adhesive compositions and laminates can be made according to a method of the invention.

Adhesive composition comprises a polyfarnesene and a tackifier. The polyfarnesene can be a farnesene homopolymer derived from a farnesene (e.g., α-farnesene or β-farnesene) or a farnesene interpolymer derived from a farnesene and at least a vinyl monomer. In some embodiments, the at least one vinyl monomer is ethylene, an α-olefin such as styrene, or a substituted or unsubstituted vinyl halide, vinyl ether, acrylonitrile, acrylic ester, methacrylic ester, acrylamide or methacrylamide, or a combination thereof. The composition disclosed herein can be used as a hot melt adhesive, a pressure sensitive adhesive or the like.

A high-quality solar battery module having an excellent adhesive property, weathering resistance, and reliability of battery function and a method of assembling the same are disclosed. The solar battery module is constituted of a solar cell panel provided with solar cell elements arranged on the back said of a transmitting panel opposite to the light-receiving surface of the light-transmitting panel; and a frame provided with plate or flange projecting therefrom and arranged over the entire periphery of the panel in order to support the back side of the light-transmitting panel and keeps the light-receiving surface in open. The solar cell panel is bonded to the projecting plate of the frame with a moisture curing hot-melt adhesive composed mainly of a polymer containing at least two hydrolytic silyl group in one molecule.

An elastic laminate for use as a tear resistant diaper side panel. The elastic laminate comprises an elastic substrate bonded to at least one layer of a tensioned spunbond nonwoven web comprising thermoplastic filaments comprising at least about 10% by weight polyethylene. The laminate is then incrementally stretched in the transverse direction to provide a service stretch greater than 100% and a strength ratio greater than 0.35. In one embodiment, the elastic substrate is bonded between the tensioned nonwoven webs by point bonding or hot melt adhesives. Also disclosed is a method for making an elastic laminate comprising the steps of providing at least one layer of a tensioned spunbond nonwoven web comprising thermoplastic filaments comprising at least about 10% by weight polyethylene, providing an elastic substrate, bonding the elastic substrate and the at least one layer of nonwoven web to provide an elastic laminate, and incrementally stretching the laminate in the transverse direction to provide a service stretch greater than 100% and a strength ratio greater than 0.35.

A polyolefin-based elastic hot melt adhesive composition having oil resistance, creep resistance and excellent bond strength is provided. The adhesive composition is useful in elastic laminates used in personal care absorbent articles and other garments.

The present invention provides a process and apparatus for manufacturing an electromagnetic interference shielding metallic foil cladded plastic product. The process comprises (a) coating one side of a superplastic alloy plate with a coupling agent or a hot melt adhesive; (b) placing the coupling agent- or hot melt adhesive-coated superplastic alloy plate in a mold, and superplastically forming the superplastic alloy plate to a superplastic alloy foil with a predetermined shape, such that another side of the superplastic alloy foil is attached to the mold and the coupling agent- or hot melt adhesive-coated side of the superplastic alloy foil is spaced apart from the mold to form a mold cavity, wherein an injection machine is attached to the mold cavity, and wherein the injection machine is capable of injecting softened plastic into the mold cavity; (c) introducing softened plastic from the injection machine to the mold cavity, such that plastic adheres on the coupling agent- or hot melt adhesive-coated side of the superplastic alloy foil, and an electromagnetic interference shielding metallic foil cladded plastic product is formed; and (d) removing the plastic product from the mold. The final metallic plastic product can not only have as intricate a shape as an ordinary plastic product, but also has a shielding effectiveness as high as an ordinary metallic shield.

A shaped support for a body-shaping garment, including a foundation garment, such as a brassiere or girdle, is formed from a single or from multiple layers of a plastic material having certain flex modulus and perpendicular and in-plane apparent stiffnesses, such as a polyester film with a thickness in the range of from 15 to 35 mil. The shaped support is incorporated into the structure of the body-shaping garment, preferably by adhering the support directly to the fabric comprising the body-shaping garment using a film or hot melt adhesive. The shaped support preferably has an asymmetric shape and readily conforms to various body curvatures for increased wearing comfort, but has sufficient stiffness to provide desired lifting or holding support.

The invention discloses a polyurethane multilayer composite sheet for an automotive headliner, which has a non-woven fabric layer, a first reinforcing glue film layer, a first reinforcing fiber layer, a first adhesive film layer, polyurethane foam board, a second adhesive film layer, a second reinforcing fiber layer, a reinforcing glue layer and a surface finish layer from bottom to top. The production method of the polyurethane multilayer composite sheet has the characteristics that: the use of the reinforcing glue films as a substitute of hot-melt adhesive powder simplifies production process, improves production efficiency and product quality, radically solves dust pollution in a production process, and improves the working environment of workers. The polyurethane multilayer composite sheets produced by the method can be used for fiber glass-free automotive roofs, biodegradable automotive roofs, light automotive roofs, and other high-quality automotive headliners; the introduction of reinforcing fiber mats in different forms enables the method to produce breathable automobile roofs, high acoustic absorption automotive roofs, high strength automotive roofs and other functional automotive headliners; and the sheet and the method fill a gap of the automotive headliner industry in China.

A method for producing a mouth guard having an encapsulated sensor module. The method includes vacuum forming a first sheet of thermoplastic material using a mold to produce a first mouth guard layer, attaching a sensor module to the first mouth guard layer with a hot melt adhesive, vacuum forming a second sheet of thermoplastic material over the sensor module to produce a second mouth guard layer, storing a default threshold level in the sensor module, and calibrating the sensor module to account for sensor alignment. In an example embodiment, the first and second layers are formed such that they define an open area that allows a user's tongue to touch their upper palate after the mouth guard has been inserted and such that the layers define a channel for accepting a plurality of teeth, including the incisors of a user.

A reinforcing nut plate (40) contacts one surface of an automotive vehicle body pillar (28) with hot-melt adhesive bodies (52) therebetween. A door hinge plate (15) is secured to the pillar (28) and nut plate (40) by one or more bolts (20,22) providing a predetermined mounting arrangement. On rust-proofing or other manufacturing treatment raising the door temperature a significant amount, the adhesive bodies affix the nut plate to the pillar. Now, the door may be removed from the pillar and transported to another work site for accessories to be mounted, following which the door can be readily reinstalled to the predetermined arrangement with the pillar and nut plate.

A hot melt adhesive that is composed of a metallocene catalyzed polyethylene polymer, a hydrogenated styrenic block copolymer, a tackifying resin, and a solid plasticizer. The preferred polyethylene polymer is an ethylene-octene copolymer, and the preferred styrenic block copolymer is a styrene-ethylene-butylene-styrene having less than 30% styrene content. The preferred solid plasticizer is either glycerol tribenzoate or 1,4-cyclohexane dimethanol dibenzoate.

An improved process of coating tacky or soft polymer pellets to maintain a free-flowing property, uses a liquid binder, in conjunction with an anti-tack or partitioning powder such as talc to prevent aggregation during storage. The binder is a non-volatile material such as an oil or plasticizer including triglycerides, mono- / di-glycerides, acetylated mono- / di-glycerides, fatty acids, epoxidized triglycerides, phthalates, benzoates, sebacates, lactates, citrates, mineral oils etc. Applications of this process include chewing gum bases, hot-melt adhesives, sealants, rubber masterbatches, powdered rubber, and other soft and tacky polymer materials.

This invention relates to an improved hot melt adhesive comprising a tackifying resin wherein the resin is substantially aliphatic and has a glass transition temperature of greater than 65° C. and a thermoplastic polymer.

The invention relates to a method which feeds single layer paper or double layer paper to respectively print and then processes the paper into non-drying glue label. The method is characterized in that: the label is made of single layer or double layer web and film and is printed, gelatinized, hinged, post-processed on same non-drying glue rotary printing. The method includes following steps: the single layer or double layer web and film are respectively arranged on two paper feeding portions of the non-drying glue rotary printing; printing color class is selected, and the single layer or double layer web and film respectively penetrate corresponding printing station and following stations such as gelatinization, joint, mould cutting and so on; the surfaces of the single layer or double layer web and film is printed simultaneously; the single layer or double layer web and film, whose surface has been coated by hot melting glue, arranged on the lower paper feeding portion joints with the back side of the film arranged on the upper paper feeding portion; and a transparent plastic film is coated on the surface of the joint non-drying glue paper, and the mould cutting device cuts the part needing to be cut and reserves base paper.

The invention relates to a preparation method of a reactive polyurethane hot melt adhesive for fabric lamination, relates to a reactive polyurethane hot melt adhesive, and belongs to the technical field of polyurethane hot melt adhesive preparation. The reactive polyurethane hot melt adhesive for fabric lamination is prepared by the following steps: heating and melting polyester polyol, polyether polyol, a chain extender, an adhesive force accelerant and an antioxidant and mixing uniformly, drying in vacuum for dewatering, adding isocyanate, a catalyst and a silane coupling agent, and reacting under nitrogen protection. The prepared reactive polyurethane hot melt adhesive for fabric lamination has the characteristics that: after being heated, the hot melt adhesive becomes molten thick state because of physical crosslinking generated under the action of hydrogen bonds, and then becomes original physical property after being cooled; the hot melt adhesive not only has excellent enzyme bacteria resistance, higher adhesion strength and good flexibility, water resistance, waterproof and moisture permeable properties and the like, but also does not contain volatile organic solvents, has excellent environmental friendliness, and is suitable for the lamination of various fabrics and the lamination of fabrics and waterproof and moisture permeable thin films.