CN105400461A

CN105400461A - Adhesive for labels

Info

Publication number: CN105400461A
Application number: CN201510897976.8A
Authority: CN
Inventors: 蒋明杰
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-12-08
Filing date: 2015-12-08
Publication date: 2016-03-16

Abstract

The invention relates to an adhesive for labels. The adhesive comprises the following raw materials by weight: 95-98% of a base material, and 2-5% of a curing agent. Specifically, the base material includes: 18-23% of butyl acrylate (BA), 4-8% of methyl acrylate (MA), 3-6% of acrylic acid (AA), 0.1-0.2% of 2-ethylhexyl acrylate, 0.1-0.5% of an initiator, and 64-75% of a solvent. The adhesive provided by the invention has the characteristics of high initial adhesion, fast curing speed, no shedding, no slip and no warping after under instantaneous pressure, permanent adhesion, good adhesive properties to most packaging materials and the like, and is convenient to use.

Description

A kind of tackiness agent for label

Technical field

The invention belongs to adhesive area, particularly a kind of tackiness agent for label.

Background technology

Glued joint (bonding, bonding, cementing, gluing) and refer to the technology that homogeneity or heterogeneous body surface stick with glue agent and link together to there is stress distribution continuous, lightweight, or sealing, the features such as most technological temperature is low.Glued joint the connection being specially adapted to unlike material, different thickness, ultra-thin specification and complex component.Glued joint RECENT DEVELOPMENTS the fastest, application industry is extremely wide, and has great effect to high-and-new science and technology progress and people's daily life improvement.Therefore, study, all kinds of tackiness agent of development and production is very important.

Along with going from bad to worse of global environment, people bring into use some environmentfriendly products gradually.Although tackiness agent is not really the huge Chemicals of a class, the harm of environment also be can not be ignored.The tackiness agent of those non-environment-friendly types will be abandoned gradually.Polyvinyl formal tackiness agent (being commonly called as " 107 glue "), due to containing free formaldehyde, is detrimental to health.Forbid already in developed country, but in China because it is cheap, so still have the suitable market share.But its consumption reduces gradually, will all eliminate soon.How to make the tackiness agent of non-environment-friendly type become environmental-protection type adhesive by modification is imperative work.A kind of tackiness agent replaced not containing formaldehyde in plywood making has been studied successfully by Japanese firm.Common urea formaldehyde and melamine tackiness agent contain the formaldehyde that human allergy can be caused to react, and intensity, the water tolerance of this tackiness agent are close with melamine tackiness agent with cost.In today that the cry of environmental protection grows to even greater heights, increasing people starts the development being devoted to biodegradable tackiness agent.The biological degradation of polymkeric substance has been come by hydrolysis and oxygenizement.The polymkeric substance that major part can be degraded contains degradable group, such as amido, hydroxyl, urea groups etc. on its main chain.React with two hydroxyl and ether, the polyester of synthesis containing methylol, as matrix, produces biodegradable tackiness agent, and they are also with containing the butyric ester, valerate, Mierocrystalline cellulose, starch ester etc. of hydroxyl as matrix, with sucrose ester as tackifier, produce the tackiness agent of energy biological degradation or hydrolysis.In addition, with starch or sulfonated ester for matrix, add the wax containing polarity, produce containing polarity, to the tackiness agent of water sensitive, unboiled water solution can be issued in the effect of water, reduction or the pollution eliminated environment when carrying out waste treatment.

Summary of the invention

Technical problem to be solved by this invention is to provide a kind of tackiness agent for label, it is high that invention adhesive has initial bonding strength, curing speed is fast, label does not come off after exerting pressure instantaneously, not slippage, not warpage, hold tack, most wrapping material are had to the features such as good adhesiveproperties, be easy to use.

A kind of tackiness agent for label of the present invention, the feed composition of described tackiness agent comprises: base-material 95-98%, and solidifying agent is 2-5%;

Wherein base-material component, by weight percentage: butyl acrylate BA18-23%, methyl acrylate MA4-8%, 2-EHA 2-HEA0.1-0.2%, vinylformic acid AA3-6%, initiator 0.1-0.5%, solvent 64-75%.

Described initiator adds-H for terephthaldehyde's peroxy acid di tert butyl carbonate.

Described solvent is one or both in vinyl acetic monomer EtAc, toluene.

Described solidifying agent is isocyanates solidifying agent.

Described isocyanates solidifying agent is tolylene diisocyanate, diphenylmethanediisocyanate, isophorone diisocyanate, 1, hexamethylene-diisocyanate, 1, one or more in 5-naphthalene diisocyanate, trimethylammonium 1,6-hexamethylene diisocyanate.

Described base ingredient is: butyl acrylate BA21.242%, methyl acrylate MA6.069%, 2-EHA 2-HEA0.1%, the third vinylformic acid AA3.255%, initiator 0.284%, solvent 69.05%.

Described base ingredient is: butyl acrylate BA19.142%, methyl acrylate MA5.069%, 2-EHA 2-HEA0.125%, vinylformic acid AA5.248%, initiator 0.294%, solvent 70.122%.

Described base ingredient is: butyl acrylate BA23%, methyl acrylate MA4.256%, 2-EHA 2-HEA0.10%, vinylformic acid AA4.22%, initiator 0.2%, solvent 68.224%.

More tackiness agent of BA are harder, and the BA system of strong binding type sizing agent is more, although initial stage clinging power is not too high, As time goes on can increase.

AA's is more, and its tackiness agent polarity is higher, and hardness is also larger, and thermotolerance is better, and clinging power is also higher, on the contrary, the occasion that AA consumption is few, its tackiness agent polarity is low, and flexibility is good, and clinging power also reduces; AA with few occasion, its tackiness agent hardness is little, and cohesive force is low, i.e. its confining force or determine the reductions such as loading performance.

The occasion that MA uses many, the hardness of its tackiness agent is larger, and its cohesive force is also better, in the tackiness agent of label.

beneficial effect

It is high that invention adhesive has initial bonding strength, and curing speed is fast, and label does not come off after exerting pressure instantaneously, not slippage, not warpage, hold tack, most wrapping material is had to the features such as good adhesiveproperties, is easy to use.

Embodiment

Below in conjunction with specific embodiment, set forth the present invention further.Should be understood that these embodiments are only not used in for illustration of the present invention to limit the scope of the invention.In addition should be understood that those skilled in the art can make various changes or modifications the present invention, and these equivalent form of values fall within the application's appended claims limited range equally after the content of having read the present invention's instruction.

Following all according to the initial bonding strength of GB/T4852-1999 working sample;

GB/T4851 working sample confining force.

Embodiment 1

The feed composition of tackiness agent is: base ingredient 95%, curing agent diphenyl methane diisocyanate 5%;

By weight percentage, base ingredient is: butyl acrylate BA21.242%, methyl acrylate MA6.069%, vinylformic acid AA3.255%, 2-EHA 2-HEA0.1%, initiator adds-H0.284%, vinyl acetic monomer EtAc34.525%, toluene 34.525%.

Embodiment 2

The feed composition of tackiness agent is: base ingredient 97.7%, curing agent diphenyl methane diisocyanate 2.3%;

By weight percentage, base ingredient is: butyl acrylate BA19.142%, methyl acrylate MA5.069%, vinylformic acid AA5.248%, 2-EHA 2-HEA0.125%, initiator adds-H0.294%, vinyl acetic monomer EtAc35.061%, toluene 35.061%.

Embodiment 3

The feed composition of tackiness agent is: base ingredient 96%, curing agent diphenyl methane diisocyanate 4%;

By weight percentage, base ingredient is: butyl acrylate BA23%, methyl acrylate MA4.256%, 2-EHA 2-HEA0.10%, vinylformic acid AA4.22%, initiator 0.2%, vinyl acetic monomer EtAc34.112%, toluene 34.112%.

Claims

1. for a tackiness agent for label, it is characterized in that: described tackiness agent component comprises: base-material 95-98%, solidifying agent is 2-5%;

2. a kind of tackiness agent for label according to claim 1, is characterized in that: described initiator adds-H for terephthaldehyde's peroxy acid di tert butyl carbonate.

3. a kind of tackiness agent for label according to claim 1, is characterized in that: described solvent is one or both in vinyl acetic monomer EtAc, toluene.

4. a kind of tackiness agent for label according to claim 1, is characterized in that: described solidifying agent is isocyanates solidifying agent.

5. a kind of tackiness agent for label according to claim 4, it is characterized in that: described isocyanates solidifying agent is tolylene diisocyanate, diphenylmethanediisocyanate, isophorone diisocyanate, 1, hexamethylene-diisocyanate, 1, one or more in 5-naphthalene diisocyanate, trimethylammonium 1,6-hexamethylene diisocyanate.

6. a kind of tackiness agent for label according to claim 1, it is characterized in that: described base ingredient is: butyl acrylate BA21.242%, methyl acrylate MA6.069%, 2-EHA 2-HEA0.1%, vinylformic acid AA3.255%, initiator 0.284%, solvent 69.05%.

7. a kind of tackiness agent for label according to claim 1, it is characterized in that: described base ingredient is: butyl acrylate BA19.142%, methyl acrylate MA5.069%, 2-EHA 2-HEA0.125%, vinylformic acid AA5.248%, initiator 0.294%, solvent 70.122%.

8. a kind of tackiness agent for label according to claim 1, is characterized in that: described base ingredient is: butyl acrylate BA23%, methyl acrylate MA4.256%, 2-EHA 2-HEA0.10%, vinylformic acid AA4.22%, initiator 0.2%, solvent 68.224%.