Moisture-proof and insect-proof file seal and its production process

A file sealing and preparation technology, which is applied in the direction of inorganic compound addition, coating, physical treatment of paper, etc., can solve the problems of not being able to protect files well, not having moisture-proof and insect-proof performance, and file sealing functions are single, etc., reaching a strong market Promote the use value, change the safety performance, and enhance the effect of insect-proof performance

Active Publication Date: 2017-07-11
一撕得包装科技(杭州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Now on the market, the function of the file seal is single, and it does not have the performance of moisture-proof and insect-proof. It cannot protect the files in the humid environment, and it is impossible to avoid insects, causing irreparable losses.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A production process of a file envelope with better moisture-proof and insect-proof properties, comprising:

[0026] Step 1) Preparation of core paper and inner paper: add 10wt% reed pulp to chemical wood pulp, add D-cyphenthrin water-based emulsifier to obtain suspension, and further prepare core paper after stirring and shearing. Add conventional type kaolin into chemical wood pulp, and further prepare lining paper after stirring and shearing.

[0027] Step 2) The core paper and the inner paper are laminated, the core paper is preheated to 40°C, the inner paper is preheated to the same temperature as the core paper, and the core paper and the inner paper are pressed against each other to form one body.

[0028] Step 3) Pretreatment of the face paper, after the face paper is subjected to calendering treatment, offset printing is carried out, printing is carried out with oily ink, and irradiated with 254nm ultraviolet lamp for 30 minutes.

[0029] Step 4) The preparati...

Embodiment 2

[0033] A production process of a file envelope with better moisture-proof and insect-proof properties, comprising:

[0034] Step 1) Preparation of core paper and inner paper: add 20wt% reed grass pulp and D-cyphenthrin aqueous emulsifier to chemical wood pulp to obtain a suspension, and further prepare core paper after stirring and shearing. Precipitated calcium carbonate is added to chemical wood pulp, and lining paper is further prepared after stirring and shearing.

[0035] A proper amount of diketene is added to the paper material of core paper and inner paper.

[0036] Step 2) The core paper and the inner paper are laminated, the core paper is preheated to 50°C, the inner paper is preheated to the same temperature as the core paper, and the core paper and the inner paper are pressed against each other to form a whole.

[0037] Step 3) Pretreatment of the face paper, after calendering the face paper, then offset printing, printing with oil-based ink, and irradiating with ...

Embodiment 3

[0042] A production process of a file envelope with better moisture-proof and insect-proof properties, comprising:

[0043] Step 1) Preparation of core paper and inner paper: add 14wt% straw pulp to chemical wood pulp, add D-cyphenthrin water-based emulsifier to obtain suspension, and further prepare core paper after stirring and shearing. Add kaolin, gypsum, and talc to chemical wood pulp, and then prepare lining paper after stirring and shearing.

[0044]Step 2) The core paper and the inner paper are laminated, the core paper is preheated to 45°C, the inner paper is preheated to the same temperature as the core paper, and the core paper and the inner paper are pressed against each other to form a whole.

[0045] Step 3) Pretreatment of the face paper, after the face paper is subjected to calendering treatment, offset printing is carried out, printing is carried out with oily ink, and irradiated with a 254nm ultraviolet lamp for 50 minutes.

[0046] Step 4) the preparation o...

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Abstract

The invention provides a making process of a damp-proof and insect-preventing file seal. A micron-order protective layer is formed by spraying a damp-proof and insect-preventing coating among face paper, core paper and lining paper, and the file seal having excellent damp-proof and insect-preventing properties is made. The making process comprises the steps that 1, the core paper and the lining paper are made; 2, the core paper and the lining paper are bonded; 3, the face paper is preprocessed; 4, the damp-proof and insect-preventing coating is prepared; 5, the file seal is made.

Description

technical field [0001] The invention relates to the technical field of packaging, in particular to a moisture-proof and insect-proof file envelope for letter packaging and delivery. Background technique [0002] After encapsulating the letter or document, the envelope is delivered to the recipient by the post office or courier company to realize the information exchange between the sender and the recipient; It saves the cost or time cost of communication between the sender and the recipient, and the mailing of letters or documents in envelopes facilitates people's lives. At present, the envelopes selected by post offices or courier companies are made of paper materials, and the general paper materials have poor moisture-proof and insect-proof performance. [0003] In the early stage, the inventor used multi-layer micro-corrugated cardboard to improve the hardness and stiffness of the document seal itself, and ensured the moisture-proof and waterproof performance of the docu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H25/04D21H19/14D21H19/28D21H17/07D21H17/68D21H17/67
CPCD21H17/07D21H17/675D21H17/68D21H19/14D21H19/28D21H25/04
Inventor 常江
Owner 一撕得包装科技(杭州)有限公司
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