Production method of heat-sealable food packaging paper

A technology for food packaging paper and production methods, applied in pulp beating methods, textiles and papermaking, paper, etc., to achieve excellent waterproof and oil-proof effects and good temperature resistance

Pending Publication Date: 2021-06-11
中国制浆造纸研究院衢州分院 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there have been reports to improve the oil and water resistance of products by surface sizing and oil repellent, but there is no report on improving the heat sealing performance of food packaging paper with surface sizing formula

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] (1) After the coniferous wood pulp and hardwood pulp are crushed separately, the softwood pulp is beaten to 40°SR, and the hardwood pulp is beaten to 35°SR. The amount of softwood pulp is 30%, and the amount of hardwood pulp is 70%. Mix the two kinds of slurries evenly, add AKD neutral sizing solution of 20kg per ton of absolute dry raw material, and PAE wet strength agent stock solution of 15kg per ton of absolute dry raw material in the flow delivery system, dehydrate through chopping board, press, The base paper for food wrapping paper is obtained after drying in a mirror vat;

[0020] (2) After drying, the smooth surface of the base paper for food packaging paper is sizing on one side through a film transfer surface sizing machine, and the amount of sizing is 2.0g / m 2 The surface sizing agent used is oil repellant (Daikin TG-8111), thermoplastic water-based acrylate emulsion (DSM Neocryl BT-62), water-based ethylene acrylic acid block copolymer, PE wax emulsion and ...

Embodiment 2

[0023] (1) After the coniferous wood pulp and hardwood pulp are crushed separately, the softwood pulp is beaten to 55°SR, and the hardwood pulp is beaten to 45°SR. The amount of softwood pulp is 50%, and the amount of hardwood pulp is 50%. Mix the two slurries evenly, add 35kg of AKD neutral sizing solution per ton of absolute dry raw material, and 30kg of PAE wet strength agent stock solution per ton of absolute dry raw material in the flow delivery system, and dehydrate, press, The base paper for food wrapping paper is obtained after drying in a mirror vat;

[0024] (2) After drying, the smooth surface of the base paper for food packaging paper is sizing on one side through a film transfer surface sizing machine, and the amount of sizing is 3.5g / m 2 , the surface sizing agent used is oil repellant (Daikin TG-8811), thermoplastic water-based acrylate emulsion (Dow company RHOBARR 320), water-based ethylene acrylic acid block copolymer, PE wax emulsion and carboxymethyl cellul...

Embodiment 3

[0027] (1) After the softwood pulp and hardwood pulp are crushed separately, the softwood pulp is beaten to 47°SR, and the hardwood pulp is beaten to 40°SR. The amount of softwood pulp is 40%, and the amount of hardwood pulp is 60%. Mix the two slurries evenly, add 30kg of AKD neutral sizing solution per ton of absolute dry raw material, and 25kg of PAE wet strength agent stock solution per ton of absolute dry raw material in the flow delivery system, and dehydrate, press, The base paper for food wrapping paper is obtained after drying in a mirror vat;

[0028] (2) After drying, the smooth surface of the base paper for food packaging paper is sizing on one side through a film transfer surface sizing machine, and the amount of sizing is 2.8g / m 2 The surface sizing agent used is oil repellent (Asahi Glass AG-E060), thermoplastic water-based acrylate emulsion (Weng Kaier SE 2457), water-based ethylene acrylic acid block copolymer, PE wax emulsion and carboxymethyl cellulose Mixe...

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Abstract

A surface sizing agent with waterproof, oil-proof and heat-sealing properties is used to coat the surface of paper to produce the heat-sealable food packaging paper in a film transfer sizing manner, and the adopted surface sizing agent is a mixed sizing solution of an oil-proof agent, a thermoplastic water-based acrylate emulsion, a water-based ethylene-acrylic acid block copolymer, a PE wax emulsion and carboxymethyl cellulose. The gluing amount is 2.03.5 g / m<2>. The food packaging paper product is quantified to be 30-100 g / m<2>, the cobb60 water absorption value is smaller than or equal to 18 g / m<2>, and the oil-proof grade is larger than or equal to 7. Bag making or box making of products is achieved in a heat sealing mode of a heat sealing machine, and the heat sealing strength is larger than or equal to 4.0 N / 15 mm.

Description

technical field [0001] This project involves the field of food wrapping paper production, mainly a production method of heat-sealable food wrapping paper. Background technique [0002] Food packaging paper has oil-proof and waterproof properties, is safe and hygienic, and has abundant raw material resources, low cost, easy recycling, easy degradation, and no pollution; from the perspective of environmental protection, recycling and recycling, paper packaging is the most cost-effective alternative The material is also in line with the requirements of the country's green development, so green paper packaging will have great growth potential. [0003] Food packaging paper does not have heat-sealing performance, and generally needs to be processed by plastic coating or glue coating before it can be used for further processing to make packaging bags or packaging boxes. It is widely used in the field of food packaging, such as takeaway packaging paper, hamburger paper, Dried fr...

Claims

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Application Information

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IPC IPC(8): D21B1/34D21D1/02D21H21/16D21H23/22
CPCD21B1/345D21D1/02D21H21/16D21H23/22Y02W90/10
Inventor 季剑锋史海真刘文
Owner 中国制浆造纸研究院衢州分院
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