47results about How to "Retain softness" patented technology

The invention relates to a waterproof product containing chlorinated polyethylene, in particular to a waterproof roll sheet containing chlorinated polyethylene and a preparation method, which solve the problem that the waterproof roll sheet in the prior art has low performance index and high formula cost. The waterproof product containing chlorinated polyethylene is prepared by the following steps: mixing and stirring an ethylene-octylene copolymer, the chlorinated polyethylene, linear high-pressure polyethylene, a filler intensifier, a soften plasticizer, phenol antioxidants, a heat stabilizer, a lubricating agent and light stabilizer; pelleting the raw materials with a plastics processing mill, a double-roller mill and a pelleter in sequence; feeding granules into a single screw extruder for extruding and forming by a die; and feeding formed materials into a three-roller cooling coining mill for rolling to form the waterproof roll sheet. The invention not only retains unique softness, extensibility and rebound elasticity of rubber, but also retains high tensile breaking strength of LLDPE (Linear Low Density Polyethylene); the whole sheet has good softness, glancing flatness and planeness; performance indexes exceed the national standard and relative standard of ministry of railways; the ageing resisting performance, physical performance and processing performance are excellent; and the production cost is low.

The invention discloses a compounding method of hot air through nonwoven fabric and all cotton nonwoven fabric, and belongs to the technical field of nonwoven fabric production. The method comprises the following steps: taking hot air through nonwoven fabric as the bottom layer, laminating a nonwoven fabric-cotton mesh on the hot air through fabric, and carrying out pre-wetting and front-back spunlace laminating to obtain the product. According to the method, a spunlace method is used to replace chemical adhering to compound chemical fiber nonwoven fabric and all cotton spunlace nonwoven fabric; the advantages of all cotton nonwoven fabric such as softness, water absorbing property, breathability, and the like, are preserved, at the same time, the advantages of hot air through nonwoven fabric such as high filling power, good elasticity, soft hand feeling, strong warm keeping performance, air penetrating and water penetrating performance, and the like are also preserved; moreover, the glue leakage is prevented, and the peeling strength meets the requirement.

The invention relates to the technical field of a leather coating decoration method, and provides a coating decoration method for making high-grade waxing leather from low-grade leather with the advantages that the process is simple, the operation is convenient, used solvents have low toxicity, the natural attributives of softness, ventilation and the like of real leather are maintained, and the qualification rate is high. The method mainly comprises the following steps of leather blank preparation, defect repair, baking, plate pressing, polishing, mechanical foaming, falling, toggling, top coating, beating softening and sand plate pressing.

The present invention relates to a high flame retardancy composite material for a high voltage cable of a new energy automobile, the high flame retardancy composite material comprising the following raw materials in parts by weight: 5-25 parts of polyethylene resin; 25-50 parts of polyolefin elastomer; 30-50 parts of ethylene-vinyl acetate copolymer; 8-20 parts of chlorinated polyethylene; 30-60 parts of composite flame retardant; 0.2-15 parts of wear-resistant flame retardant synergist; 0.7-2.5 parts of antioxidant; 1-2 parts of lubricant; and 1.5-3 parts of cross-linking sensitising agent. The formulation of the present invention is improved, for example by using a mixture of bimodal polyethylene and high melt index high density polyethylene as a polyethylene resin and chlorinated polyethylene as a modifier, adding polyolefin elastomer and ethylene-vinyl acetate copolymer, and additionally adding a composite flame retardant, a flame retardant synergist, and an antioxidant, such that the composite material of the present invention has better flame retardancy properties and burns at a UL94 V0 grade whilst retaining the flexibility, high temperature resistance, oil resistance, and flame retardancy of high voltage cable material for use in a new energy automobile, and having excellent extrusion processing properties.

The invention relates to a waterproof product, in particular to an ethylene-octene copolymer waterproof coil and a preparation method thereof, which solves the problem that the traditional waterproof coil can not completely satisfy various property indexes of the product and has high prescription cost. The coil is prepared from ethylene-octene copolymer, chlorinated polyethylene, linear high-pressure polyethylene, a filling strengthening agent, a softening plasticizer, a phenols antioxidant, a thermal stabilizer, a lubricating agent and a light stabilizer. The method comprises the following steps of: mixing and stirring various raw materials; granulating respectively by sequentially adopting a plastic refining machine, a double-roll press and a granulator; throwing the particles into a single screw extruder to be extruded, and forming by using a mould; and throwing the formed material into a three-roll cooling embosser to be rolled to form the waterproof coil. The waterproof coil maintains the specific softness, elongation and elasticity of rubber, also maintains higher break tension strength of LLDPE (Linear Low Density Polyethylene), and has good softness, flatness and smoothness, property indexes exceeding the national standard and the relevant standard of ministry of railway, better aging resistance property, physical property and processing property and lower production cost.

The invention relates to a manufacture method of coating for true leather transfering, which can be used in the leather precision work craft. The manufacture is: A, first use mending agent to scrape and mend the wound on the leather; B, the resin which can fuse below 130 DEG C is pressed on the thin film; C, spray the water resin fluid on the leather or the thin film coated with the resin in fog mode; D, between 100-110 DEG C temperature conditions, fold the thin film with the resin evenly on the leather, flat or roller press the resin layer with the pressure of 2 to 4 kilograms on to the leather and bond with it. Remove the plastic film to obtain the finished product.