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CCK release paper and preparation method thereof

A release paper and pulp technology, applied in pulp beating methods, papermaking, paper and other directions, can solve the problems of papermaking environmental pollution, difficult to decompose, difficult to degrade, etc., and achieve the effects of environmental protection, high smoothness and high internal binding force.

Pending Publication Date: 2021-06-01
YUEYANG FOREST & PAPER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With plastic release paper, because the paper is not easy to decompose after being coated, it is difficult to degrade when discarded, and the papermaking environment is polluted

Method used

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  • CCK release paper and preparation method thereof
  • CCK release paper and preparation method thereof
  • CCK release paper and preparation method thereof

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preparation example Construction

[0021] The invention provides a kind of preparation method of CCK release paper, comprising:

[0022] The chemical pulp of coniferous wood and the chemical pulp of hardwood are beaten respectively, and then the pulp is blended and auxiliary materials are added to obtain pulp;

[0023] The pulp is subjected to wet papermaking, pre-drying, coating, post-drying and calendering to obtain CCK release paper.

[0024] In the present invention, the softwood chemical pulp can be purchased from the market, for example, the softwood chemical pulp provided by Silverstar, Pacific, Laha or Botnia can be used.

[0025] In the present invention, the hardwood chemical pulp can be purchased from the market, for example, the hardwood chemical pulp provided by Guri, Symbo, Alpine, Little Bird or Fenya can be used.

[0026] In the present invention, the mass ratio of the softwood chemical pulp to the hardwood chemical pulp is preferably (25-35): (65-75), more preferably (28-32): (68-72), most pre...

Embodiment 1

[0069] After beating, the Pacific coniferous wood kraft pulp (300ml) and Senbo broadleaf kraft pulp (320ml) with freeness meeting the requirements are mixed according to the ratio of 30wt%: 70wt%; The weight ratio of the amount of slurry) is light calcium carbonate filler, which is sent to the first-stage four-stage conical slag remover by the slurry pump for purification and slag removal, and then enters the degassing tank for degassing treatment; after that, it enters the pressure screen for screening treatment (Cation PAM dosage 0.5kg / t paper (dry pulp), cationic starch 10kg / t paper (dry pulp), sizing agent alkyl ketene dimer 2.5kg / t paper (dry pulp) Sieve inlet, modified diatomite 2.5kg / t paper (absolutely dry pulp) is added to the pressure sieve outlet); then sent to the headbox for online, adjust the online flow, and control the weight of the paper at 68g / m 2 After the wet paper leaves the wire section, it enters the press section for five-roller and three-nip composite ...

Embodiment 2

[0072] Silver star coniferous wood kraft pulp (310ml) and parrot broadleaf wood kraft pulp (320ml) with freeness meeting requirements after beating are mixed according to the ratio of 30wt%: 70wt%; The weight ratio of the amount of slurry) is light calcium carbonate filler, which is sent to the first-stage four-stage conical slag remover by the slurry pump for purification and slag removal, and then enters the degassing tank for degassing treatment; after that, it enters the pressure screen for screening treatment (Cation PAM dosage 0.5kg / t paper (dry pulp), cationic starch 10kg / t paper (dry pulp), sizing agent alkyl ketene dimer 2.5kg / t paper (dry pulp) Sieve inlet, modified diatomite 2.5kg / t paper (absolutely dry pulp) is added to the pressure sieve outlet); then sent to the headbox for online, adjust the online flow, and control the weight of the paper at 77g / m 2 After the wet paper leaves the wire section, it enters the press section for five-roller and three-nip composite...

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Abstract

The invention provides a preparation method of CCK release paper. The method comprises the following process steps: respectively subjecting coniferous wood chemical pulp and broadleaf wood chemical pulp to pulping, pulp mixing, auxiliary material adding, wet paper making with pulp, pre-drying, coating in a machine, post-drying, calendaring, finishing and the like so as to obtain the CCK release paper. According to the invention, the raw paper is subjected to in-machine coating treatment, so that the waterproof and oil-proof performance and the high-temperature resistance of the CCK release paper are effectively improved, and the tensile strength, the surface smoothness, the covering property and the heat insulation property of the paper are further improved after the coating. The product prepared by the method provided by the invention has the characteristics of good barrier property, high smoothness, high internal binding force, stable peel strength, environmental friendliness and the like, is directly coated with silicon and does not need to be coated in release processing, has the characteristics of cost reduction and environmental protection, and is a typical product replacing plastic. The invention also provides the CCK release paper.

Description

technical field [0001] The invention belongs to the technical field of papermaking, in particular to a CCK release paper and a preparation method thereof. Background technique [0002] Release paper is a large category of industrial paper. Release paper, also known as silicone oil paper or anti-sticking paper, is a kind of anti-sticking paper that can prevent the prepreg from sticking and protect the prepreg from contamination. The release paper mainly plays the role of isolating sticky objects, and generally needs to be peeled off and discarded during use. The most widely used field of release paper is mainly the advertising material industry of tape or tape products. In addition, there are more and more applications in carbon fiber, food, medical and health industries. [0003] Release paper is divided into two categories: plastic release paper and plastic-free release paper. At present, most of the release paper is plastic release paper, and polyethylene (PE) particles...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21D1/02D21H17/64D21H17/68D21H19/00D21H21/08D21H21/14D21H21/16
CPCD21D1/02D21H17/68D21H17/64D21H19/00D21H21/08D21H21/16D21H21/14
Inventor 李丹史梦华董超朱宏伟周训富刘春景周金涛何江林姜云
Owner YUEYANG FOREST & PAPER CO LTD
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