35results about How to "Die-cut effect is good" patented technology

Improved adhesives are provided through the use of styrenic radial block copolymers, containing at lest 40 wt % diblock copolymers, the adhesives have improved adhesive properties and a reduced elastic behaviour under die-cutting conditions. Compared to conventional linear block copolymers of similar molecular weight, radial copolymers offer higher holding power and lower melt viscosity for the adhesive. They therefore contribute to an improved balance between processability and end-use properties.

The invention relates to a die-cutting waste discharge device with an inner frame die-cutting piece and a die-cutting waste discharge method. The die-cutting waste discharge device comprises a first opposite-pressing roller, first-stamping die-cutting cutters, first waste discharge rollers, a second opposite-pressing mechanism, second-stamping die-cutting cutters and second waste discharge rollers which are arranged sequentially. The first opposite-pressing roller attaches a first single face gummed protective film to a first release film; indent inner frames are punched in first stamping by the first-stamping die-cutting cutters; the first waste discharge rollers is used to take up the first single face gummed protective films attached to wastes of the inner frames after the first-stamping punching; the second opposite-pressing mechanism attaches a second single face gummed protective film to the non-release surface of the first release film, and sequentially attaches double faced adhesive tape and a second release film to the release surface of the first release film; normal inner frames are punched in second-stamping by the second-stamping die-cutting cutters; the second waste discharge rollers are used to take up the second single face gummed protective films attached to wastes of the inner frames after the second-stamping punching; and the size of each normal inner frame is bigger than the size of each indent inner frame. Compared with the prior art, the die-cutting waste discharge device has the advantages that the effect of waste discharge is good, the product has no deformation, and efficiency is high.

The invention provides a foam double-sided tape and a preparation method and application thereof. The foam double-sided tape comprises a base material and a pressure sensitive adhesive layer compounded at two sides of the base material. The base material is a stretchable foam layer with at least a stretchable film compounded at one side thereof. Elongation at break of the stretchable film is greater than 300%, and tensile strength is greater than 10 MPa; elongation at break of the stretchable foam layer is greater than 300%, and tensile strength is greater than 1 MPa. Elongation at break of the pressure sensitive adhesive layer is 150-3000%, tensile strength is 1MPa-30MPa, and 180-degree peel strength is greater than 5N/25mm. By the adoption of the functional layer with specific performance parameters, good interaction is realized under a specific structure, and the foam double-sided tape has excellent adhesion, excellent resistance to curved surface and warp, good buffer performance and excellent shear resistance, has high adhesion and die cutting performance to various surfaces of glass, PC, stainless steel, ABS, etc., can be removed tracelessly from various surfaces by simply stretching the whole tape, and is applicable to bonding and assembling of components of electronic products.

The invention relates to a high temperature and die cutting resistant pressure-sensitive adhesive. The adhesive is characterized in that adhesive comprises, by mass, 100 parts of a main monomer, 0.1-1.0 part of an initiator, 0.1-5.0 parts of a cross-linking agent, and 40-60 parts of an organic solvent, wherein the main monomer comprises a soft monomer, a hard monomer, a cross-linking monomer and organic silicon resin, and a mass ratio of the soft monomer to the hard monomer to the cross-linking monomer to the organic silicon resin is (60-80):(8-35):(5-15):(1-10). The invention also relates to a preparation method of the pressure-sensitive adhesive. The pressure-sensitive adhesive has the advantages of excellent high temperature resistance, good die cutting performance, and no die cleaning after 20,000 or above time die cutting. The pressure-sensitive adhesive has the common characteristics of an organosilicone adhesive and an acrylic acid adhesive, has good film forming property, has good adhesion strength (1000-2000g/25mm), and has good adhesion to a substrate. A preparation method of the pressure-sensitive adhesive has the advantages of simplicity, easiness in control, and facilitation of reduction of the production cost of the pressure-sensitive adhesive.

The invention relates to a printing and die-cutting three-layer film structure label material, in particular to a three-layer co-extruded polyethylene label film and a preparation method thereof. Thepolyethylene label film comprises an outer layer, an intermediate layer and an inner layer, the label film is prepared from the outer layer, the intermediate layer and the inner layer through a three-layer co-extrusion up-blowing forming process, and the blowup ratio is controlled to be 2-3.5. The outer layer is prepared from the following components in percentage by mass: 70-85% of high-density polyethylene, 10%-20% of metallocene catalyzed polyethylene and 5%-10% of low-density polyethylene, wherein the sum of the mass percentages of all the components is 100%. The intermediate layer is prepared from the following components in percentage by mass: 75-90% of high-density polyethylene and 10%-25% of metallocene catalyzed polyethylene. The inner layer is prepared from the following components in percentage by mass: 70%-90% of medium-density polyethylene and 10%-30% of low-density polyethylene. The label film provides sufficient stiffness and excellent die-cutting performance and has good vertical and horizontal balanced physical properties.

The invention discloses a hot melt pressure sensitive adhesive for high speed automatic labeling, which comprises, by weight percentage, 40-45% of petroleum resins, 35-45% of styrene-isoprene-styrene, 10-15% of naphthenic oil, 2-5% of calcium carbonate, 1-3% of polyethylene wax and 1-2% of antioxidants. A preparation method of the hot melt pressure sensitive adhesive for high speed automatic labeling is further disclosed. Compared with prior art, the hot melt pressure sensitive adhesive has the advantages of being environment-friendly, low in cost, high in initial bonding strength and enduring bonding strength, excellent in die cutting performance, and applicable to the high speed automatic labeling.

The invention provides an ultrathin foam conductive adhesive tape which comprises a pressure-sensitive adhesive layer and a release film on at least one side of the pressure-sensitive adhesive layer, wherein the pressure-sensitive adhesive layer comprises a (methyl) acrylate copolymer base, and expanded polymer core-shell particles and conductive particles dispersed in the base; and the thickness of the pressure-sensitive adhesive layer is 2-500 micrometers. The ultrathin foam conductive adhesive tape has lower cost, adjustable compressible characteristic, favorable viscosity and favorable conductivity.

The invention discloses an incompletely cured OCA optical adhesive with a multilayer structure and a preparation method thereof. An completely cured first OCA layer and an incompletely cured second OCA layer are composited, the incompletely cured second OCA layer laminates a cover plate glass to meet the filling of an ink section difference, the completely cured first OCA layer is used to improvethe overall cohesion, and the excellent die cutting property is met to adapt to weather changes in various seasons, and various problems in the transportation process are solved. The incompletely cured OCA optical adhesive is a low-elasticity product, but has different physical properties, and has die-cutting stability and environmental adaptability which are not possessed by a single-layer product in use and preservation. According to the incompletely cured OCA optical adhesive, the problem of interface bonding force between multi-layer structure OCAs is solved at the same time, and it is ensured that the incompletely cured OCAs with the multilayer structure are not subjected to layering and the like when an adherend is attached to the incompletely cured OCAs before or after the curing.

The present invention relates to a heat-shrinkable polyester film, which has a heat-shrinkage of 20% or more in both the longitudinal and transverse directions when treated with 80° C. water for 30 seconds and a bidirectional balance parameter in the range of 0.25 to 2.5 and exhibits an excellent properties in die-cutting and removing from a container such as a glass bottle for recycling by washing with hot water.

The invention discloses a novel double-sided tape, comprising a first release layer, a first pressure-sensitive adhesive layer, a base material layer, a second pressure-sensitive adhesive layer and a second release layer, wherein the first release layer is arranged above the pressure-sensitive adhesive layer, the first pressure-sensitive adhesive layer is arranged above the base material layer, the second pressure-sensitive adhesive layer is arranged below the base material layer, and the second release layer is arranged below the second pressure-sensitive adhesive layer. According to the invention, the first pressure-sensitive adhesive layer and the second pressure-sensitive adhesive layer which are prepared from a post-curing acrylic acid UV pressure-sensitive adhesive are subjected to coating so as to form the tape, so the tape is high in initial viscosity at an initial stage, low in peel strength and convenient to position and rework; and after being irradiated by UV light, the tape is improved in adhesion degree, the peel strength of the tape is sharply increased to achieve a firm adhesion effect, and meanwhile, the temperature resistance of the tape is also greatly improved. A PET thin film, a PI thin film, a PVC thin film, a TPU thin film or a non-woven fabric is used as the base material layer, so a die-cutting property is excellent, the problems of adhesive overflowing, wire drawing and the like during die cutting can be avoided, and production yield is high.

The invention relates to the technical field of die-cutting machines, in particular to an intelligent die-cutting machine for polyester plastic film sheet material preparation, which comprises an electric control cabinet and a bottom plate. A vertical plate is mounted outside the bottom plate, and a stripping mechanism is arranged between the electric control cabinet and the vertical plate; the stripping mechanism comprises a transmission shaft A and a transmission shaft B which are rotationally connected between the electric control cabinet and the vertical plate, a connecting shaft is installed on the sides, close to each other, of the electric control cabinet and the vertical plate, a rotating disc is installed outside the connecting shaft, a belt is jointly wound between the connecting shaft and the transmission shaft B, a plurality of matching rods are installed outside the rotating disc, and limiting grooves are formed in the sides, close to each other, of the electric control cabinet and the vertical plate. The die-cutting machine has the advantages that cut materials are prevented from being adhered to raw materials, the working efficiency of polyester plastic film sheet material preparation is improved, the cost of polyester plastic film sheet material preparation is reduced, the die cutting effect is better, damage to the cutter head is reduced, and the service life of the cutter head is prolonged.

The invention relates to an expanded polytetrafluoroethylene film of a composite conducting layer and a preparation method of the expanded polytetrafluoroethylene film. The expanded polytetrafluoroethylene film of the composite conducting layer comprises an expanded polytetrafluoroethylene layer and a conducting layer, wherein the conductive layer is compounded on the surface of the expanded polytetrafluoroethylene layer through hot pressing. The preparation method comprises the steps of stretching the expanded polytetrafluoroethylene layer to obtain a base material, preparing conductive liquid, coating the surface of the base material with the conductive liquid, drying, and finally compounding the conductive liquid on the surface of the base material in a hot pressing manner to obtain the expanded polytetrafluoroethylene film of the composite conductive layer. Compounding is carried out in a hot pressing mode, the stability of the conducting layer can be ensured, and compared with a metal material, the expanded polytetrafluoroethylene is high in flexibility, good in die cutting performance and excellent in weather resistance.

The invention discloses an automatic die cutting assembly line. The automatic die cutting assembly line comprises a flat plate, supporting legs, a first fixing cover, a second fixing cover, a door plate, a hinge, a hasp lock, a first material cylinder, a first motor, a first three-jaw chuck, a second material cylinder, a second motor, a second three-jaw chuck, a glue receiving disc, a glue returnhole, a glue solution brush, bristles, fine holes, a straight pipe, a glue outlet pump, a glue solution box, a sealing cover, a triangular seat, a heat conduction plate, a heating sheet, a fixing seat, a first pressing structure, a first air cylinder, a fixing frame, a pressing roller, a second air cylinder, a die cutting knife, a second pressing structure, a fixing strip plate, a residual material cylinder, a third motor, a third three-jaw chuck, a material return pump, a connecting pipe, a gooseneck pipe and a hose. The automatic die cutting assembly line is reasonable in structure, manual die cutting does not need to be carried out manually, the labor intensity is low, the concentricity is high, the structure is compact and not dispersed, two materials can be attached and glued througha glue solution brushing structure, meanwhile, redundant glue solution can be recycled, and the glue solution can be recycled into the glue solution brushing structure.