Release paper for artificial leather, preparation method and application thereof

A technology of artificial leather and release paper, applied in papermaking, textiles, papermaking, paper, etc., can solve the problems of complex preparation process and high cost, and achieve the effect of simple production method, low cost and convenient production method

Inactive Publication Date: 2010-04-21
广州市白云区春源纸业制品厂 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The primary purpose of the present invention is to overcome the disadvantages of the existing release paper, such as the step of pretreating the base paper, the complicated preparation process, and the high cost, and to provide a glossiness of 90% to 98%, high heat resistance, Artificial leather release paper with simple and convenient preparation method, relatively low cost and no softening and decomposition of coating at 200-250°C

Method used

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  • Release paper for artificial leather, preparation method and application thereof
  • Release paper for artificial leather, preparation method and application thereof
  • Release paper for artificial leather, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Preparation of artificial leather release paper with glossiness of 96%

[0052] (1) Preparation of water dispersible polyester

[0053] 25kg neopentyl glycol, 8kg trimethylolpropane, 30kg phthalic anhydride, 6kg adipic acid and 6.9kg xylene were added in a 300-liter stainless steel polymerization reactor with water separator and condenser, The water separator is filled with xylene and protected with nitrogen gas. Raise the temperature to 140°C, at this time most of the solid matter melts, start stirring, then raise the temperature to 160°C for 0.5h, then heat to 180°C to react until the water output reaches 80% of the theoretical amount; then gradually raise the temperature to 230°C, keep the temperature for 3h , when the acid value is 30mgKOH / g, quickly cool to 100°C, add 39.5kg ethylene glycol butyl ether and stir for 15 minutes, cool down to 70°C, add dimethylethanolamine to neutralize to a pH value of 6, react for 0.5h, add deionized water (adjust the solid conten...

Embodiment 2

[0069] Preparation of artificial leather release paper with glossiness of 98%

[0070] (1) Preparation of water-dispersible polymethacrylate

[0071] Add 70.71kg of methyl methacrylate, 14.17kg of butyl acrylate, 8.72kg of methacrylic acid, 3.49kg of N-methylol acrylamide and 2.91kg of β-hydroxyethyl acrylate into the monomer batching tank and mix evenly to obtain Mixture A. Get 1 / 3 of mixture A and add in the 200 liters of stainless steel reactors with reflux condenser that 37.6kg isopropanol is housed, obtain mixture B. Add 0.6kg of azobisisobutyronitrile into the batching tank filled with the remaining 2 / 3 mixture A, stir and mix at room temperature to prepare component C dropwise. The temperature of mixture B was raised to 85°C, and 0.25 kg of azobisisobutyronitrile was added to the reactor, and after stirring for 15 minutes, component C was added dropwise to the reactor for 3 hours. Then add 14.4kg of isopropanol and 0.15kg of azobisisobutyronitrile to the reactor, rai...

Embodiment 3

[0087] Preparation of artificial leather release paper with glossiness of 94%

[0088] (1) Preparation of water-dispersible polymethacrylate

[0089] Add 115kg deionized water, 0.24kg nonylphenol polyoxyethylene ether, 0.29kg sodium lauryl sulfate and 0.20kg sodium bicarbonate into a 500-liter stainless steel reaction kettle with a reflux condenser and two high-position dropping tanks, The mixture A was obtained, and the temperature was raised to 60° C. with stirring. Add 48.3 kg of methyl methacrylate, 31.0 kg of butyl acrylate, 0.94 kg of methacrylic acid and 2.81 kg of β-hydroxyethyl acrylate into a monomer batching tank, stir and mix evenly to obtain mixture B. Add 0.51kg of ammonium persulfate and 20kg of deionized water into another batching tank, stir and mix evenly to obtain mixture C. Add 1 / 10 of the total amount of mixture B and 4kg of mixture C to the reactor containing mixture A, the remaining mixture B is pumped into the high-level dropping tank, and the remaining...

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Abstract

The invention discloses release paper for artificial leather, a manufacturing method and application thereof. A water-dispersed release agent layer coating material is obtained by mixing water-dispersed resin, a water-based curing agent, a defoaming agent and water uniformly; and the coating material is coated on release base paper to obtain the release paper for the artificial leather. The release paper can be used directly without coating a silicone release agent on a surface, has 90 to 98 percent of glossiness and excellent plumpness, and can be repeatedly used for producing the artificial leather. The preparation method is simple and convenient and low in energy consumption, the used release agent coating material takes the water as a dispersed medium, has no organic solvent release, safety, environmental protection and low cost. The artificial leather prepared by the release paper has high glossiness, plumpness and surface planeness and improves the additional value of the artificial leather greatly.

Description

technical field [0001] The invention relates to a paper, in particular to a release paper for artificial leather. The present invention also relates to a manufacturing method and application of the above-mentioned release paper. Background technique [0002] The release paper method is the most commonly used process for the production of artificial leather and synthetic leather. Its working principle is: use the prefabricated release paper with leather pattern or no pattern as the carrier, and use the surface material of imitation leather products, such as polyurethane Acetone solution is directly and evenly coated on the surface of the release paper by roller coating, then dried, heated and plasticized, and can be further coated with the middle layer or foam layer or bottom layer and adhesive layer as required. Then apply the base cloth flatly, then heat and plasticize, and finally peel off the release paper (carrier) with a leather pattern or no pattern layer from the sur...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H19/16D21H19/26D21H19/24D21H19/28D21H23/22C08G63/20C08F220/14C08F220/06
Inventor 卢成林周雪松万小芳
Owner 广州市白云区春源纸业制品厂
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