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A method for preparing release paper based on inorganic powder materials and polymers

A technology of high molecular polymer and inorganic powder material, which is applied in the fields of synthetic cellulose/non-cellulose material pulp/paper, specialty paper, textiles and papermaking, etc. The effect of low cost and simplified production process

Inactive Publication Date: 2011-12-14
HUNAN FUTAI DIGITAL MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is mainly to solve the problem of high cost of the existing base paper for release paper, and to provide a method for preparing release paper using cheap calcium carbonate and other inorganic powder materials and high molecular polymers

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Add 85kg of calcium carbonate with a particle size of 3000 mesh into the high-speed mixer, and heat it to 130°C, add 1kg of silane coupling agent, stir at high speed for 60min, add 40kg of polyethylene with a melt index of 5-20g / 10min, 2kg Ethylene bislauric acid amide, 0.5kg azodicarbonamide, high-speed stirring for 50 minutes to obtain a mixture, and then extruded through an extruder at a temperature of 190-200°C to obtain the material used for making the bottom paper, and finally in a molten state The material is made into bottom paper through a paper film machine.

[0030] Silicone oil at 1.0g / m 2 The amount of dry silicon coating is evenly coated on one or both sides of the base paper prepared above; It is dried in sections at 150-120°C, and cooled to obtain release paper after drying.

Embodiment 2

[0032] Add 60kg of talc powder with a particle size of 325 mesh into the high-speed mixer and heat it to 120°C, then add 2kg of titanate coupling agent, stir at high speed for 30min, then add 20kg of polyethylene with a melt index of 5-20g / 10min , 5kg glycidyl methacrylate grafted polyethylene, 0.3kg polyethylene wax, 1kg ammonium carbonate, high-speed stirring for 20-60min to obtain a mixture, and then extruded at a temperature of 190-200°C through an extruder to obtain a manufactured bottom The material used for paper is finally made into bottom paper by passing the material through a paper film machine in a molten state.

[0033] Silicone oil at 0.8g / m 2 The amount of dry silicon coating is evenly coated on one or both sides of the base paper prepared above; It is dried in sections at 150-100°C, and cooled to obtain release paper after drying.

Embodiment 3

[0035] Add 55kg of talc powder with a particle size of 1000 mesh and 15kg of calcium carbonate of 2000 mesh into a high-speed mixer and heat it to 140°C, then add 0.5kg of silane coupling agent and 0.5kg of borate coupling agent, and stir at high speed for 60 minutes. Add 30kg of polyethylene with a melt index of 5-20g / 10min, 10kg of glycidyl methacrylate grafted polypropylene, 3kg of polylactic acid, 0.5kg of polyethylene wax, 0.2kg of ethylene bislauric acid amide, and 1.8kg of azo Diformamide is stirred at high speed for 60 minutes to obtain a mixture, and then extruded through an extruder at a temperature of 190-200°C to obtain the material used for making the bottom paper, and finally the material is made into a bottom paper through a paper film machine in a molten state.

[0036] Silicone oil at 0.6g / m 2 The amount of dry silicon coating is evenly coated on one or both sides of the above-mentioned base paper; It is dried in sections at 150-100°C, and cooled to obtain re...

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Abstract

The invention belongs to the field of papermaking, and relates to a preparation method of release paper based on inorganic powder materials and high molecular polymers. It is characterized in that: the formula is 60-85 parts by weight of inorganic powder material; 10-40 parts by weight of high molecular polymer; 0.3-3 parts by weight of lubricant; 0.1-2 parts by weight of foaming agent; 0.1-3 parts by weight of active agent . During preparation, in a high-speed mixer, first add inorganic powder materials and active agents to stir; then add high molecular polymers, lubricants, and foaming agents to obtain a mixture, and send the mixture to a paper film forming machine to make base paper ; Apply silicone oil evenly on the base paper; finally, dry and cool in sections to obtain release paper. By adopting the method of the invention, no trees are felled, the cost is low, and the production process does not require coating; and it has the characteristics of waterproof, moisture-proof and high strength, meets the requirements of environmental protection and energy saving, and has great development potential and market demand.

Description

Technical field [0001] The present invention is a papermaking field in the field of papermaking, involving a method of preparing for isolation paper based on inorganic powder materials and polymer polymers. Background technique [0002] The isolation paper is mainly applied to the surface of the tape to protect the adhesive layer on the surface of the tape.The traditional isolation paper is composed of the original paper, isolation layer and anti -adhesive layer.Its preparation process is a layer of isolation agent on the surface of the original paper surface of the isolation paper (the isolated agent used is mainly polyethylene), and then the surface of the surface of the gonorrhea layer is coated with a layer of anti -adhesive (the anti -adhesives used are mainly silicon oil) Get isolation paper. [0003] The original paper required for the isolation paper produced by the existing craftsmanship is mainly made of wood pulp. Due to the time for the materials of wood, with the lar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H27/00D21H13/46D21H19/00D21H17/35D21H17/53D21H21/14
Inventor 沈宝善陈登龙沈宝成陈玲令
Owner HUNAN FUTAI DIGITAL MATERIAL TECH
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