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A kind of filling method of one-component sealant

A sealant, one-component technology, applied in the directions of packaging, transportation and packaging, the type of packaging items, etc., can solve problems such as affecting the quality of the glue, and achieve the effect of a simple filling method, easy implementation and broad application prospects.

Active Publication Date: 2020-10-23
HANGZHOU ZHIJIANG NEW MATERIAL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, as the filling progresses, the pressure plate is pressed down, and the pressure plate and the glue plane form a cavity, and air will enter the cavity, and part of the air will enter the colloid. Due to the one-component silicone sealant and the one-component Polyurethane sealants all belong to the moisture curing mechanism. The water vapor in the air will cross-link with the glue to form a gel or skin, so that air enters the part of the gel or skin, which affects the quality of the glue.

Method used

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  • A kind of filling method of one-component sealant
  • A kind of filling method of one-component sealant
  • A kind of filling method of one-component sealant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053]Push the one-component sealant (50℃~60℃) to be filled in the finished kettle into the press, set a vacuum cover with a vacuum valve and a nitrogen valve on the top of the press to seal, and then open the vacuum When the pressure gauge value shows -0.08MPa, stop vacuuming, open the nitrogen valve to fill nitrogen and vent, when the pressure gauge value returns to 0MPa, pull out the plug at the bottom of the kettle and press down the pressure plate, the pressure is 15MPa~ 20MPa, the pressing speed is 10cm / s, the temperature is 20 ℃ ~ 30 ℃, and the material is discharged; the inner space of the kettle is kept in the nitrogen state of 1 atmosphere during the material discharge process, and the filling process is completed, and the single group after filling is obtained. part sealant.

[0054] For a schematic diagram of the device structure of the filling method provided in Example 1 of the present invention, see figure 1 shown.

[0055] The actual effect diagram of the fil...

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Abstract

The invention provides a filling method of a single-component sealant. The filling method comprises the following steps that a) the to-be-filled single-component sealant is sealed and vacuumized, andthen nitrogen is introduced to make the pressure of the to-be-filled single-component sealant and the pressure of the outside balanced; and b) the balance of the pressure of the to-be-filled single-component sealant and the pressure of the outside is kept, a pressure plate presses downwards, and the filled single-component sealant is obtained after discharging. Compared with the prior art, the filling method adopts specific process steps, nitrogen protection is achieved, it is ensured that the whole filling process is stable under specific conditions, and it is ensured that the quality of thesingle-component sealant is not affected while air is prevented from entering the sealant. Experimental results show that the filled single-component sealant obtained through the filling method is good in filling effect and free of gel.

Description

technical field [0001] The invention relates to the technical field of sealant production, and more specifically, relates to a filling method of a one-component sealant. Background technique [0002] Sealant is a material used to fill gaps (holes, joints, seams, etc.), and has two functions of bonding and sealing. Polyurethane sealant, silicone sealant, and polysulfide sealant constitute the three major types of high-grade sealant at present, and are widely used in construction, transportation, electronic instrumentation and parts sealing. [0003] Filling is one of the important links in the production of sealant. The filling of one-component sealant mainly refers to the filling of one-component silicone sealant and the filling of one-component polyurethane sealant. At present, the conventional one-component sealant filling method is direct filling of the pressure plate. [0004] However, as the filling progresses, the pressure plate is pressed down, and the pressure plat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B65B3/04B65B31/02
CPCB65B3/04B65B31/02
Inventor 陈丹郑苏秦高翔陶小乐何永富
Owner HANGZHOU ZHIJIANG NEW MATERIAL CO LTD
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