Method for preparing plastic-free food paperboard

A technology for cardboard and food, applied in the direction of textiles, papermaking, papermaking, packaging paper, etc., can solve expensive problems and achieve the effect of preventing air from entering the reaction chamber

Pending Publication Date: 2022-04-01
ZHEJIANG FIVE STAR PAPER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But these vacuum degassing devices are very expensive, and there is no simple, low-cost method to remove air bubbles in the paint at this stage

Method used

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  • Method for preparing plastic-free food paperboard
  • Method for preparing plastic-free food paperboard
  • Method for preparing plastic-free food paperboard

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0065] Specific embodiment one: please refer to Figure 1-9 A method for preparing plastic-free food jam, comprising the following steps:

[0066] Using the above-mentioned equipment, according to the above-mentioned method, put 100-150 parts of pigments, 2-6 parts of dispersants, 1-5 parts of lubricants, 20-50 parts of adhesives, and 1-10 parts of auxiliary agents in parts by weight. In the reaction chamber 201, oil is passed into the reaction chamber 201 from the oil hole at the bottom of the reaction chamber 201 until the oil is immersed in all the raw materials, and the liquid level of the oil is higher than the raw materials by more than 2 cm. After standing for 2 hours, the entrained raw materials The air floats and discharges the air, so that the raw materials are stored in an environment insulated from the air.

[0067] The box 901 is filled with water, and the lower end of the capillary 902 is inserted under the water surface. The water rises in the capillary 902 due...

specific Embodiment 2

[0076] Specific embodiment two: on the basis of specific embodiment one, please refer to Figure 10 A method for preparing plastic-free food jam, the drainage pipe 203 has a U-shaped trap 204; the bottom of the trap 204 is higher than the liquid level of the oil 6; the bottom of the trap 204 is lower at the height of the connecting port.

[0077] There is no water in the water trap 204 at first, when the capillary 902 continuously delivers water to the water trap, the upper limit of the water storage at the bend of the water trap 204 is reached, and the water is discharged into the reaction chamber 201. At the same time, the water trap 204 and The drainage tube 203 at the lower end also constitutes a siphon, which speeds up the delivery of water.

[0078] In addition, the water trap 204 is provided with a valve near the port of the reaction chamber 201. After the valve 202 in the reaction chamber 201 is opened, the valve is closed, and the valve is controlled by an external c...

specific Embodiment 3

[0079] Specific embodiment three: different from specific embodiment one, the coating 4 prepared in the reaction chamber 201 communicates with the temporary storage chamber of the applicator head 1 through the valve 202 located at the bottom side of the reaction chamber 201, and the valve 202 is a solenoid valve Combination with mechanical safety valve; forming electromagnetic safety valve, this electromagnetic safety valve is the prior art, has the common characteristics of electromagnetic valve and mechanical valve, that is, after the pressure received reaches or exceeds the set threshold, the valve opens, but The electromagnetic control valve is opened and no longer closed, and the valve changes from normally closed to normally open only after the pressure received reaches or exceeds the set threshold. When the upper opening of the electromagnetic safety valve receives the pressure of the complete coating 4 (the coating 4 in which the solid material 7 in the reaction chamber...

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Abstract

The invention discloses a method for preparing plastic-free food paperboard, and belongs to the field of papermaking. The invention relates to a method for preparing plastic-free food paperboard. The method comprises the following steps: step 1, immersing a solid material in a hydrophobic oily substance; 2, sucking out the liquid material from a box placed higher than the reaction cavity through a capillary tube, and introducing the liquid material into the reaction cavity from the bottom side of the reaction cavity; 3, mixing the liquid material and the solid material in the reaction cavity to generate a coating until the solid material is completely mixed with the liquid material; fourthly, a valve on the bottom side of the reaction cavity is opened, and the coating is introduced into a smearing head to be temporarily stored; 5, discharging the coating from a nozzle of the coating head, covering the upper side of the base paper with the discharged coating, and drying the base paper covered with the coating; the device can ensure that no air bubbles are brought in in the raw material input stage and no air enters in the coating generation stage, effectively ensures that no air bubbles are attached to the coating, and effectively ensures that the surface is flat and the degree of finish is high after the coating is coated on body paper.

Description

technical field [0001] The invention belongs to the field of papermaking, and more specifically relates to a method for preparing plastic-free food cardboard. Background technique [0002] In order to protect the environment, the current food paper is usually made of plastic-free paper, which can be directly degraded without plastic hazards. To make plastic-free paper, it is necessary to coat the base paper with plastic-free paint, which will become plastic-free paper after drying and molding. [0003] The coating process, often using a curtain coater, coats a continuous material web with at least one liquid or pasty coating medium. [0004] However, curtain coaters are particularly sensitive to environmental influences. In curtain coaters, fluctuations in air flow, temperature and air humidity can affect their stable operation. Coating mechanisms are usually located near drying devices (such as drum drying devices, infrared drying devices, etc.), so these coating mechanis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H27/10D21H19/82D21H19/38D21H19/40D21H19/56D21H19/62D21H19/64D21H19/58D21H19/46D21H19/44D21H19/52D21H19/14D21H19/32
Inventor 赵磊赵春风詹月富陈达志
Owner ZHEJIANG FIVE STAR PAPER
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