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Hot melting pressure-sensitive glue as well as preparation method and application thereof

A hot-melt pressure-sensitive adhesive, styrene block technology, applied in the direction of pressure-sensitive film/sheet, adhesive, adhesive type, etc., can solve the problems of reduced film transparency, low peel strength, complex process, etc. Stable force, easy unwinding, good weather resistance

Active Publication Date: 2019-05-21
GUANGZHOU LUSHAN NEW MATERIALS
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] The Chinese patent "Preparation method of hot-melt pressure-sensitive adhesive and its protective film" (Patent No.: CN201010560902.2) provides a coating method to prepare PE protective film. The pressure-sensitive adhesive is prepared by a column mixer, and then Coated on the PE film treated with the primer, the prepared sample has good weather resistance, but there are problems such as relatively complicated process, low efficiency, and low peel strength
Its advantage is that the pressure-sensitive adhesive can be produced by an extruder, and the protective film can also be co-extruded with the adhesive layer and PE synchronously. However, the SEBS used in the patent has no impact on the crystal point and heat resistance of the blown film product. , and after adding PB-1, the transparency of the film will be reduced, and the haze will increase

Method used

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  • Hot melting pressure-sensitive glue as well as preparation method and application thereof
  • Hot melting pressure-sensitive glue as well as preparation method and application thereof
  • Hot melting pressure-sensitive glue as well as preparation method and application thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0045] A preparation method for a hot-melt pressure-sensitive adhesive, comprising the following steps:

[0046] Add styrene block copolymer, tackifying resin and antioxidant into the stirring tank and mix to obtain the mixture, then put the mixture into the twin-screw extruder for underwater pelletizing at low temperature, dry, and add powder release agent during the drying process to Avoid clumping.

[0047] The hot-melt pressure-sensitive adhesive is used to prepare the protective film: the hot-melt pressure-sensitive adhesive is used as the inner layer raw material, polyethylene is used as the middle layer raw material and the outer layer raw material, the three-layer co-extruded blown film is cooled and rolled, and the thermoplastic elastomer polymer is obtained. Vinyl self-adhesive protective film.

Embodiment 1-4 and comparative example 1-2

[0049] Hot-melt pressure-sensitive adhesives, including the active ingredients shown in Table 1 in parts by weight:

[0050] Active ingredients of Table 1 embodiment 1-4, comparative example 1-2

[0051]

[0052]

[0053] The properties of the ingredients are shown in Table 2:

[0054] Table 2 Composition characteristic parameters of Examples 1-4 and Comparative Examples 1-2

[0055]

[0056]

[0057] Examples 1-4 were prepared by the preparation method in the specific embodiment, and Comparative Examples 1-2 were prepared by conventional technical means.

[0058] The obtained hot-melt pressure-sensitive adhesives of Examples 1-4 and Comparative Examples 1-2 were measured for melt index and hardness according to national standards GB / T3682 and GB / T2411, respectively. The results are shown in Table 3:

[0059] Table 3 Melt index and hardness test data of hot melt pressure sensitive adhesive

[0060]

[0061] Using Example 1-4 and Comparative Example 1-2 as raw m...

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Abstract

The invention discloses a hot melting pressure-sensitive glue as well as a preparation method and application thereof. The hot melting pressure-sensitive glue comprises the following effective components in parts by weight: 55-70 parts of styrene segmented copolymer, 30-45 parts of tackifying resin, and 0.1-0.5 part of an antioxidant. The preparation method comprises the following steps: mixing styrene segmented copolymer, tackifying resin and antioxidant to obtain a mixture; pelletizing the mixture in water; drying. The hot melting pressure-sensitive glue is used for preparing a protection film; the hot melting pressure-sensitive glue is free from plasticizer such as mineral oil and polybutene oil; the problems of oil separating out and smoking in processing are avoided; a die head is notinfluenced; the production can be continuously carried out; generation of three wastes in production is avoided; the environmental pollution is avoided.

Description

technical field [0001] The invention relates to a hot-melt pressure-sensitive adhesive, its preparation method and application, and belongs to the technical field of polymer organic material preparation. Background technique [0002] Protective film is a film used to protect easily damaged surfaces. Its purpose is to temporarily protect the surface of the protected substrate during production, processing, transportation and storage. It consists of a substrate and a pressure-sensitive adhesive layer. The main performance requirements of the industry for protective films are: appropriate and stable viscosity, less crystal points, easy to tear off without adhesive residue, no image retention, easy unwinding, weather resistance, etc. At present, there are two industrial production methods: coating method and co-extrusion method. The coating methods mainly include solvent type, hot melt type and emulsion type, among which the solvent type has the largest proportion, and there ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J153/02C09J157/02C09J11/06C09J7/38C09J7/29
Inventor 唐舫成胡优汪加胜杜壮张阳阳
Owner GUANGZHOU LUSHAN NEW MATERIALS
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