CN114634776A - Palm folding machine glue - Google Patents
Palm folding machine glue Download PDFInfo
- Publication number
- CN114634776A CN114634776A CN202210386991.6A CN202210386991A CN114634776A CN 114634776 A CN114634776 A CN 114634776A CN 202210386991 A CN202210386991 A CN 202210386991A CN 114634776 A CN114634776 A CN 114634776A
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- CN
- China
- Prior art keywords
- palm
- glue
- closing
- petg
- machine glue
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Abstract
The invention discloses palm-closing machine glue which is prepared by mixing the following components in percentage by volume: 48-50% of 1, 3-dioxolane, 21-23% of 1, 4-dioxane and 27-29% of tetrahydrofuran, wherein the palm-sealing machine glue is used for sealing a milky PETG material and a transparent PETG material at the temperature of-20-0 ℃. The invention completely meets the production requirements under the winter environment, does not have the problems of insufficient adhesion and firmness for the palm combination of milky PETG material and transparent PETG material, and does not have the phenomenon of anti-adhesion.
Description
Technical Field
The invention relates to palm folding machine glue, and belongs to the technical field of printing equipment.
Background
The palm closing machine is used for butt-jointing and bonding two ends (palm closing surfaces) of a film label, and the existing palm closing process is mainly characterized in that glue is uniformly coated on the palm closing surfaces through the palm closing machine, and then the flaky single-layer heat-shrinkable film is synthesized into a cylindrical barrel material. The PETG heat shrinkable film material used as a film label has the characteristics of no toxicity, no smell, high strength, high heat shrinkage, attractive packaging effect and the like, and has the greatest advantage of heat shrinkability and good optical performance and mechanical extensibility. The PETG heat shrinkable film can be used for the fields of food and personal health care product packaging, medical and sanitary equipment food and the like, and can also be used for packaging electronic devices. The glue is an important material in the palm folding process, and the PETG palm folding glue is mainly used for tightly combining the large edge and the small edge at the palm folding position by dissolving the surface of a PETG heat shrinkage film and then combining the dissolved high polymer bodies through the pressure of a compression roller by means of the tension between the dissolved high polymer bodies.
The palm-closing glue in the prior art mainly comprises PETG heat shrinkable film palm-closing glue suitable for a high-speed palm-closing machine disclosed in application number 201910189161.2, and is prepared by mixing the following components in volume ratio: 52-58% of 1, 4-dioxane, 32-38% of 1, 3-dioxolane and 8-12% of ethyl acetate. Application number 202011572208.2 discloses a palm-folding glue for PETG heat shrinkable film labels, which is prepared by mixing the following components in volume ratio: 75-80% of 1, 3-dioxolane, 20-23% of tetrahydrofuran and 2-8% of ethylene oxide. 202011572208.2 patent is used to solve the problems that 1, 4-dioxane has carcinogenicity and harm to human body, and the 1, 4-dioxane has low melting point/freezing point and can not be used normally in autumn and winter with low room temperature.
However, in the prior art, when the formulations are used for milky PETG materials and transparent PETG materials in winter, the glue is very easy to freeze, so that the adhesion degree and firmness of the glue are influenced, and the anti-sticking phenomenon is caused.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides palm-closing machine glue which is mainly suitable for closing hands of milky PETG materials and transparent PETG materials in winter.
In order to achieve the purpose, the technical means adopted by the invention is as follows: a palm-closing machine glue is prepared by mixing the following components in percentage by volume: 48-50% of 1, 3-dioxypentacene, 21-23% of 1, 4-dioxane and 27-29% of tetrahydrofuran.
Further, the palm-closing machine glue is used for closing hands of milky PETG materials and transparent PETG materials at the temperature of-20-0 ℃.
The invention has the beneficial technical effects that: the production requirement under the winter environment is completely met, the problems of insufficient adhesion and firmness of the hands of the milky PETG material and the transparent PETG material are solved, and the anti-adhesion phenomenon is avoided.
Detailed Description
Example 1
In a workshop environment with the temperature of minus 10 +/-2 ℃ in winter, aiming at the palm folding production of the milky PETG material, the palm folding machine glue is prepared by mixing the following components in volume ratio: 49% of 1, 3-dioxy pentacene, 22% of 1, 4-dioxane and 29% of tetrahydrofuran.
The palm closing glue is uniformly coated on the palm closing surface by a palm closing machine commonly used in the field, the end part of the PETG heat shrinkable film label is quickly adhered in a palm closing mode, and the problems of insufficient adhesion and firmness and no reverse adhesion phenomenon are detected in continuous production.
Example 2
In a workshop environment with the temperature of minus 15 +/-2 ℃ in winter, aiming at the palm folding production of the transparent PETG material, the palm folding machine glue is prepared by mixing the following components in volume ratio: 50% of 1, 3-dioxy pentacene, 23% of 1, 4-dioxane and 27% of tetrahydrofuran.
The palm-closing glue is evenly coated on the palm-closing surface by a palm-closing machine commonly used in the field, the end part of the PETG heat shrinkable film label is quickly bonded in a palm-closing manner, and continuous production is realized. Cutting the material into 15mm x 100mm at the palm-closed position, testing the adhesive strength of the glue by using an electronic tension machine, testing the tension value, wherein the test value of the original 52-58% dioxane palm-closed glue is 4-5N, and the palm-closed glue of the patent is 7-8N under the same detection condition. The problems of insufficient adhesion and firmness were not detected, and no tack-back phenomenon occurred.
Through the verification of above-mentioned embodiment, under the low temperature condition in the north, adopt this patent can solve the problem that the adhesion degree and the firmness that exist are not enough, appear anti-sticking phenomenon. When the temperature of the dioxane is lower than 10 ℃, the corrosivity and the bonding property can be reduced, and the corrosivity and the bonding property are reduced along with the reduction of the temperature. Under the low temperature condition in the north, the problems of insufficient adhesion and firmness and anti-adhesion phenomenon can be solved.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and various changes or modifications within the scope of the claims may be made by those skilled in the art without departing from the scope of the present invention.
Claims (2)
1. A palm-closing machine glue is prepared by mixing the following components in percentage by volume: 48-50% of 1, 3-dioxypentacene, 21-23% of 1, 4-dioxane and 27-29% of tetrahydrofuran.
2. The palm-closing machine glue according to claim 1, characterized in that: the method is used for the palm combination of milky PETG material and transparent PETG material at the temperature of-20-0 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210386991.6A CN114634776A (en) | 2022-04-14 | 2022-04-14 | Palm folding machine glue |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210386991.6A CN114634776A (en) | 2022-04-14 | 2022-04-14 | Palm folding machine glue |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114634776A true CN114634776A (en) | 2022-06-17 |
Family
ID=81951937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210386991.6A Pending CN114634776A (en) | 2022-04-14 | 2022-04-14 | Palm folding machine glue |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114634776A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109897567A (en) * | 2019-03-13 | 2019-06-18 | 松裕印刷包装有限公司 | A kind of PETG heat shrink films suitable for high speed hand middle-envelope bag-made machine are puted the palms together before one glue |
| CN112694852A (en) * | 2020-12-28 | 2021-04-23 | 江苏双星彩塑新材料股份有限公司 | Palm-closing glue for PETG heat shrinkable film label |
-
2022
- 2022-04-14 CN CN202210386991.6A patent/CN114634776A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109897567A (en) * | 2019-03-13 | 2019-06-18 | 松裕印刷包装有限公司 | A kind of PETG heat shrink films suitable for high speed hand middle-envelope bag-made machine are puted the palms together before one glue |
| CN112694852A (en) * | 2020-12-28 | 2021-04-23 | 江苏双星彩塑新材料股份有限公司 | Palm-closing glue for PETG heat shrinkable film label |
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