Low-temperature biodegradable paper bag hot melt adhesive and preparation method thereof

A biodegradable, hot-melt adhesive technology, used in adhesives, graft polymer adhesives, adhesive types, etc., can solve the problems of hot-melt adhesive biodegradation, inability to achieve environmental protection, etc., to reduce colloid carbonization, reduce The number of shutdowns and the effect of protecting health

Active Publication Date: 2022-04-26
佛山南宝高盛高新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002]After the introduction of the plastic restriction order, paper bags gradually replaced plastic bags and became the mainstream bags. In some applications, starch hot-melt adhesives are often used for bonding, but now this part of the hot-melt adhesive cannot be biodegraded after composting, and cannot achieve true environmental protection. At this time, a degradable hot-melt adhesive is needed to bond with the paper bag , in order to achieve the real sense of environmental protection bags

Method used

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  • Low-temperature biodegradable paper bag hot melt adhesive and preparation method thereof
  • Low-temperature biodegradable paper bag hot melt adhesive and preparation method thereof
  • Low-temperature biodegradable paper bag hot melt adhesive and preparation method thereof

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preparation example Construction

[0042] Object two of the present invention is achieved using the following technical solution: a low temperature with biodegradable paper bag hot melt adhesive preparation method, comprising the following steps:

[0043] (1) Add the formulation amount of maleic anhydride grafted ash and polyester polyol to the reactor, dissolve and heat up to 130±5 °C;

[0044] (2) After the maleic anhydride grafted ash and polyester polyol are completely dissolved, then add the formula amount of polyadipic acid / butylene terephthalate, polycaprolactone stirring, stirring speed of 80r / min, heating to 150 °C, maintaining the pressure in the kettle 5MPa, after the mixing system melts, add the formula of rosin glyceride modified terpenenophenol resin, evenly stirred for 20min;

[0045] (3) Vacuuming, the pressure of vacuum removal bubble is -(0.08-0.1) Pa, the time for vacuuming and removing bubbles is 30-50 minutes, discharging, cooling granulation, and obtaining low temperature with biodegradable...

Embodiment 1- Embodiment 3 and comparative example 1-6

[0049] Respectively, the raw materials are weighed in the ratio in Table 1, and the hot melt adhesive is made according to the preparation method after Table 1, corresponding to the hot melt adhesive of different embodiments, as detailed in Table 1:

[0050] Table 1 Example 1-3 and the proportion of raw materials in proportion to 1-6 table

[0051]

[0052] Among them, the polyester polyols in Table 1 are selected from the polyester polyols of the swedish company Perstorp Company with the model capa2402. Polycaprolactone was selected from the Swedish company Perstorp with a model of 6400 polycaprolactone. Rosin glyceride modified terpenenophenol resin is prepared by the following method: rosin glycerides, terpenephenol resin into the autoclave, heated to dissolve, and then added solid acid catalyst; start the autoclave heating system and stirring system, heat up to 150-170 ° C, keep the pressure in the kettle at 2-10Mpa, Reaction time 0.5-3 hours; stop heating, cooling, granulat...

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Abstract

The invention discloses a low-temperature biodegradable paper bag hot melt adhesive and a preparation method thereof. The biodegradable paper bag hot melt adhesive used at low temperature is prepared from the following components in parts by weight: 5 to 15 parts of polyester polyol, 5 to 20 parts of polycaprolactone, 40 to 60 parts of rosin glyceride modified terpene-phenolic resin, 20 to 40 parts of poly (butylene adipate-co-terephthalate) and 5 to 10 parts of maleic anhydride grafted white wax. By adding the polyester polyol, the polycaprolactone PCL, the rosin glyceride modified terpene-phenolic resin, the maleic anhydride grafted white wax and other components and adjusting the use amount of the components, the prepared hot melt adhesive is applied to the bonding part of a paper bag, and the bonding requirements of the bonding part of a paper carrying rope and the paper bag and the sealing part of the paper bag can be met. Meanwhile, the hot melt adhesive prepared by the invention has the greatest advantage that the colloid part of the paper bag can be completely degraded by aerobic composting, while the common EVA type hot melt adhesive cannot be degraded by aerobic composting.

Description

Technical field [0001] The present invention relates to a hot melt adhesive technology, in particular to a low temperature biodegradable paper bag hot melt adhesive and preparation method thereof. Background [0002] After the introduction of the plastic restriction order, paper bags gradually replaced plastic bags to become the mainstream of the bag, but most of the automated production of paper bags need to be glued with hot melt adhesive, existing applications often use starch hot melt adhesive lamination, but now this part of the hot melt glue is unable to compost after biodegradable, can not achieve real environmental protection, at this time need a degradable hot melt glue, bonded with the paper bag, in order to achieve the true sense of environmental protection bag. Contents of the Invention [0003] In order to overcome the shortcomings of the prior art, one of the objects of the present invention is to provide a low temperature with biodegradable paper bag hot melt adh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J145/00C09J167/02C09J167/04C09J167/00C09J151/00
CPCC09J145/00C08L2201/06C08L67/02C08L67/04C08L67/00C08L51/00Y02W90/10
Inventor 李伟奇
Owner 佛山南宝高盛高新材料有限公司
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