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How to prepare canvas stickers

A canvas and coating technology, which is applied in the direction of chemical instruments and methods, painting tools, adhesive types, etc., can solve the problems of reduced bonding performance and no development of canvas glue, etc.

Active Publication Date: 2019-11-26
宁波康大美术画材集团股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These two conditions make the adhesive performance of glue products decrease after repeated pasting
[0004] In addition, there has not been developed a kind of glue specially suitable for canvas pasting in the prior art, or the canvas that can have pasting function has not been seen in the existing market

Method used

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  • How to prepare canvas stickers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Embodiment 1, the preparation method of canvas sticker in the present embodiment comprises the steps:

[0042] ① Preparation of microsphere emulsion:

[0043] mixing and stirring isooctyl acrylate, methyl methacrylate, hydroxyethyl acrylate, acrylic acid and acetoacetoxyethyl methacrylate to form a dispersed phase;

[0044] Mix deionized water and polyvinyl alcohol-1788, raise the water temperature to 30-95°C, dissolve for 5-25 minutes, cool down to 25-65°C after fully dissolved, add the above dispersed phase, and disperse at 25-65°C After 20min-60min, heat up to 70-90°C, stir at 300-500rpm and pass nitrogen for 5-10 hours, then cool down to 30-60°C and discharge. The mass ratio of polyvinyl alcohol 1788 to deionized water is 1.:2~ 1:6;

[0045] ②Thicken the above-mentioned microsphere emulsion and filter to obtain a suspension to obtain a self-adhesive;

[0046] ③Apply the self-adhesive on the back of the canvas; by hand, use a wire bar applicator to evenly apply th...

Embodiment 2

[0060] Embodiment 2, the coating operation in the present embodiment and the operation of covering the back material on the back side of the self-adhesive are as follows

[0061] This embodiment is produced by machine, and the steps described in Example 1 are aimed at manually pasting backing materials. The range of manual coating of self-adhesive by wire bar coaters is limited, and the coating effect is not as good as that of coating machines. For handmade, not suitable for mass production.

[0062]In this embodiment, the covering method of the back material is: use a coating machine to coat, and use the method of scraping to produce. The angle between the scraping knife and the coating wheel is 45-60°. The spatula spreads evenly on the back of the canvas. Open the gap between the pressure roller and the rubber roller, and use double-sided tape to stick the back material and the canvas coated with self-adhesive firmly. The width of the double-sided tape is 5cm, and it is pas...

Embodiment 3

[0067] Embodiment 3, the microsphere emulsion in the present embodiment comprises component and weight ratio thereof as follows:

[0068] Isooctyl Acrylate 70%

[0069] Methyl Methacrylate 15%

[0070] Acrylic 4%

[0071] Polyvinyl Alcohol-1788 3%

[0072] Benzoyl Peroxide 1.1%

[0073] Acetoacetoxyethyl methacrylate 3.5%

[0074] Glycidyl methacrylate 0.6%

[0075] Hydroxyethyl Acrylate 2.8%.

[0076] Refer to Example 2 for other steps.

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Abstract

The invention discloses a canvas paster. The canvas paster comprises canvas, and an adhesive sticker used for coating the back surface of the canvas; and the adhesive sticker is prepared via adding a thickening agent into a suspension liquid obtained via filtering of a microsphere emulsion. The invention also discloses a preparation method of the canvas paster. Compared with the prior art, the canvas paster possesses following advantages: the adhesive sticker is prepared from the microsphere emulsion, the sphere surface of each pressure-sensitive adhesive microsphere is loaded with a centripetal binding force because of the microsphere structures of the microsphere emulsion, and the bottom surface of each pressure-sensitive adhesive microsphere is immobilized by a bottom surface adherend, so that each of the microspheres is immobilized in a certain range, and moving is impossible to realize, under long-term pressure, appropriate bonding with the adherend is realized, separating from a substrate because of firm contact with the surface of the adherend is avoided, and repeat bonding can be realized.

Description

technical field [0001] The invention relates to a canvas that can be pasted, and also relates to a preparation method of this kind of canvas. Background technique [0002] Polyacrylate pressure-sensitive adhesives are generally acrylic acid (ester) copolymers. This type of pressure-sensitive adhesive usually has the following characteristics: ①The formula is simple, and generally no additives such as anti-aging agents, tackifying resins, and softeners are added; ②Adhesive It has a wide bonding range and has good bonding performance to most polar material surfaces or porous material surfaces, such as metal, cement, paper, wood, ceramics, etc. At the same time, it also has good bonding properties to plastics and fibers such as polyvinyl chloride, polyester, polystyrene and corona-treated polyolefin. ③Good weather resistance, since the acrylate copolymer does not contain carbon-carbon double bonds, it can maintain good bonding performance no matter whether it is used indoors o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J133/08C08F220/18C08F220/14C08F220/28C08F220/06B32B37/12B32B37/10B32B37/06B44C5/04B44D3/18
CPCB32B37/06B32B37/10B32B37/1284B44C5/04B44D3/18C08F220/18C08F220/1808C09J133/08C08F220/14C08F220/281C08F220/06
Inventor 徐淑瑾
Owner 宁波康大美术画材集团股份有限公司