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

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 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 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 discloses an incompletely cured OCA optical adhesive with a multi-layer structure and a preparation method thereof. The fully cured first OCA layer and the incompletely cured second OCA layer are combined, and the incompletely cured second OCA layer To fit the cover glass, meet the filling of the ink step difference, fully cured the first OCA layer to improve the overall cohesion, meet the excellent die-cutting performance, adapt to the weather changes in various seasons, and various problems during transportation. The present invention is a product with low elastic modulus, but has different physical properties, and has die-cutting stability and environmental adaptability that single-layer products do not have in use and storage; The problem of interfacial bonding force ensures that the incompletely cured OCA of the multi-layer structure of the present invention will not delaminate after being attached to the adherend before and after curing.

The invention relates to a removable hot-melt pressure-sensitive adhesive and belongs to the technical field of adhesives. The pressure-sensitive adhesive is prepared from raw materials in parts by mass as follows: 35-45 parts of matrix resin, namely, a styrene-isoprene-styrene triblock copolymer, 30-40 parts of a tackifier, namely, C5 petroleum resin, 8-13 parts of a softener, namely, dioctyl terephthalate, 3-8 parts of a peel strength modifier, namely, polyethylene wax, 7-15 parts of a viscosity modifier, namely, liquid petroleum resin, 0.6-1.4 parts of an antioxidant and 0.4 parts of an ultraviolet absorbent. An adhesive tape prepared from the pressure-sensitive adhesive can be peeled and pasted repeatedly, and the adhesive cannot be transferred after the pressure-sensitive adhesive is pasted with paper, PE films, PP films and the like. The pressure-sensitive adhesive meets the environmental protection requirement of European Union REACH and RoHS on the basis of detection of specialized agencies and can completely meet the requirement of production of sealing labels, labels and removable adhesive bags.

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 an anti-wrinkle environment-friendly hot-melt adhesive for film adhesive bags, which is prepared according to parts by weight, and comprises the following raw material components: 25-35 parts of solution polystyrene butadiene, 12-20 parts of plasticizer DINCH, 40 parts ‑55 parts of styrene-modified C5 resin, 3‑8 parts of low molecular weight polyisobutylene, 1‑3 parts of PE wax and 1‑1.5 parts of antioxidant, using solution polystyrene butadiene system, with good die-cutting performance and low shrinkage With DINCH as the plasticizer, the viscosity and tensile strength of the polymer can be significantly reduced, and the plasticizer DINCH and polyisobutylene can synergistically reduce the internal stress of the colloid, so as to achieve anti-wrinkle for the label applied to the film type adhesive bag after coating The effect, and has excellent die-cutting performance. The present invention also proposes a method for preparing the wrinkle-resistant environmentally friendly hot-melt adhesive for film adhesive bags, and a method for preparing film adhesive bags using the wrinkle-resistant environmentally friendly hot-melt adhesive for film adhesive bags, The process is simple and easy to operate.

The invention discloses a waterproof adhesive tape, which comprises from top to bottom: a first isolation layer, a first acrylic adhesive layer, a first black thermoplastic elastomer layer, a first primer layer, a base material layer, and a second primer layer layer, a second black thermoplastic elastomer layer, a second acrylic adhesive layer, and a second release layer. The invention also discloses a preparation method of the waterproof tape and electronic products containing the waterproof tape. The waterproof adhesive tape of the invention has excellent water resistance, cushioning properties and light-shielding properties, and can be applied to permanent bonding of electronic component frames.

The invention relates to the technical field of adhesives, in particular to a label adhesive for small-caliber glass bottles and a preparation method thereof. The raw materials for preparing the label glue include 50-60 parts of styrene-based block copolymer, 60-90 parts of tackifying resin, 40-50 parts of softener and 1-2 parts of antioxidant in parts by weight. The styrenic block copolymer is selected from one or more of SEBS, SBS, SIS, SBR, and SEPS. The invention provides a label glue for small-caliber glass bottles, which can be prepared through the action of styrene-based block copolymers, tackifying resins and softeners. When the label glue is used for labels, good die-cutting At the same time, it also has high initial tack and stickiness to glass bottles.