CN108084929A - For the limpid hot melt pressure sensitive adhesive to limpid label - Google Patents

For the limpid hot melt pressure sensitive adhesive to limpid label Download PDF

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Publication number
CN108084929A
CN108084929A CN201810076821.1A CN201810076821A CN108084929A CN 108084929 A CN108084929 A CN 108084929A CN 201810076821 A CN201810076821 A CN 201810076821A CN 108084929 A CN108084929 A CN 108084929A
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CN
China
Prior art keywords
pressure sensitive
hot melt
sensitive adhesive
melt pressure
label
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Granted
Application number
CN201810076821.1A
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Chinese (zh)
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CN108084929B (en
Inventor
X·潘
H·王
X·邢
S·王
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Avery Dennison Corp
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Avery Dennison Corp
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    • 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
    • C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
    • C09J2203/334—Applications of adhesives in processes or use of adhesives in the form of films or foils as a label
    • 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
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
    • C09J2301/304—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier the adhesive being heat-activatable, i.e. not tacky at temperatures inferior to 30°C
    • 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
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
    • C09J2301/312—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier parameters being the characterizing feature
    • 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
    • C09J2453/00—Presence of block copolymer
    • 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
    • C09J2491/00—Presence of oils, fats or waxes

Abstract

The present invention provides a kind of hot melt pressure sensitive adhesive, and it includes polymer based on low block fraction SIS, the hydrogenation alicyclic hydrocarbon resin of low viscosity and low molecular weight is used as plasticizer and polyethylene wax as tackifier, high viscosity and high molecular weight paraffin wax oil.The adhesive can be realized including following performance characteristic：It is limpid that the transparency, water resistant is whitening to limpid beverage bottle label label, after label application first 48 it is small when in repositioning, the low swellability of film surface material, for matching somebody with somebody the low viscosity for the machinability for mixing coating, smell is low and of light color.

Description

For the limpid hot melt pressure sensitive adhesive to limpid label
Technical field
The present invention relates generally to the composition for contact adhesive, more particularly to improved adhesive provides higher The label of quality, while keeping good machinability including matching somebody with somebody to mix to be coated in the method for the improved adhesive.
Background technology
Adhesive label and adhesive tape are well-known.In typical label construction, one or more layers adhesive is coated with Or be otherwise applied on release liner, it is then laminated to plane materiel such as paper, polymer film or other absorbency flexible materials On.In typical adhesive tape structure, thin polymer film or weaving paper scribble adhesive on a surface, then roll up its own Around.The adhesive used in adhesive tape and label includes rubber-based and acrylic-based pressure sensitive adhesive (PSA).It can be by PSA from having Solvent, aqueous dispersion or hot melt are applied on release liner or plane materiel.
Heat the commodity such as glass that PSA (HMPSA) can be the consumer goods and industrial products, metal and plastic containers provider Just and economic labelling mode.HMPSA is easy to handle in solid form, they are fast in the case of no any aid in treatment Speed forms adhesive bonding, and they usually have the long shelf-life.Moreover, because HMPSA does not include solvent, so it is logical It is often environmentally friendly and cost-effective.
An example of HMPSA can be found in U.S. Patent number 5,942,569, and which depict include sticky hot melt group The polymer composition of the pellet form of object is closed, it includes a) about 5 weight % to the thermoplastic polymer of about 90 weight %, b) about 0 weight % is to the tackifying resin of about 65 weight %, c) about 0 weight % is to the plasticizer of about 50 weight %, d) at most about 2 weight % Antioxidant and granulation aid, wherein the viscous heat melt composition have some minimums tackifier or plasticizer, and And it is that storage modulus G' is less than about 5 × 10 at about 25 DEG C6Dyne/cm2Contact adhesive, and each pellet have substantially Inviscid surface.The disclosure further comprises the polymer composition of the pellet form suitable for moulding article.The group It closes object and includes sticky hot-melt composition, high molecular weight triblock copolymer and increasing it includes at least one general formula configuration A-B-A Mould agent and granulation aid.Granulation aid is substantially surrounded by cementitious compositions so that mechanograph there is no surface viscosity.It is also public A kind of method for forming pellet is opened.
The HMPSA that U.S. Patent No. 7,595,365 is disclosed to be come using the combination of poly ＆ Alpha ,-olefin oil or poly ＆ Alpha ,-olefin oil The softening dot characteristics of modified tackifier.The disclosure further includes the composition containing tackifier and poly ＆ Alpha ,-olefin oil.
U.S. Patent number 8,076,422 disclose it is a kind of for resealable packaging hotmelt, it includes 30 to At least one of 90 weight % is based on ethylene and/or propylene and C4-C12The copolymer of alpha-olefin, can be by metallocene-catalyzed Polymerization obtains, and melt index (MI) is 5-100 grams/10 minutes (DIN ISO 1133).Described adhesive further includes 5-50 weights The softening point for measuring % is 80-140 DEG C of tackifying resin, and the fusing point of 0-15 weight % is heavy for 120-170 DEG C of wax and 0.1-20 Measure the additive and auxiliary agent of %.The viscosity that adhesive measures at a temperature of 170-190 DEG C is 25,000-250,000mPas.
Other HMPSA compositions are also by U.S. Patent number 9,242,437；U.S. Patent Application Publication No. US2005/ 0013996, US2006/0251890, US2010/0193127 and US2016/0272856；And International Patent Application Publication No. WO2002/074837 and WO2006/107763 is provided.
Even if in view of these bibliography, there is also provide performance characteristics (such as water resistant is whitening, relocatability and/ Or optical clarity) improved high-performance HMPSA demand.
Summary of the invention
In one embodiment, the present invention relates to hot melt pressure sensitive adhesives.Adhesive includes base polymer, wherein base Plinth polymer includes styrene-isoprene copolymer.Base polymer preferably has less than the diblock fraction of 30 weight %. For adhesive also comprising tackifier, wherein tackifier include hydrogenation alicyclic hydrocarbon resin.Preferably, the weight average molecular weight of tackifier exists In the range of 300-800.For adhesive also comprising plasticizer, it is 400-1000mm that wherein plasticizer, which includes kinematic viscosity at 40 DEG C,2/ the second Paraffin oil.The number-average molecular weight of preferred plasticizer is 400-1000, and the kinematic viscosity at 40 DEG C is 400-700mm2/ the second.It should Adhesive can further include polyethylene wax.Preferably, polyethylene wax 140 DEG C of dynamic viscosity for 150-500 centipoises and Pour point is more than 100 DEG C.
In another embodiment, the present invention relates to a kind of labels.Label includes the plane materiel for receiving printing mark Layer.According to an embodiment, label further includes hot melt pressure sensitive adhesive layer.
In another embodiment, the present invention relates to a kind of containers of labelling.The container of labelling includes limiting outer The container on surface.The container of labelling further includes the label according to an embodiment for being adhered to container outer surface.
In another embodiment, the present invention relates to a kind of methods for applying a label to container.This method includes carrying For limiting the container of outer surface.This method further includes the label provided according to an embodiment.This method is further included label The outer surface of container is adhered to, thus applies a label to container.
Description of the drawings
The present invention is described in detail below with reference to attached drawing, wherein identical reference numeral represents similar part.
Fig. 1 is the schematic diagram of the container (such as bottle) of the labelling of an embodiment according to the present invention.
Fig. 2 is the mark with facestock layer, hot melt pressure sensitive adhesive layer and lining of an embodiment according to the present invention The schematic diagram of the cross-sectional view of label.
Detailed description of the invention
The present invention relates generally to hot melt pressure sensitive adhesive (HMPSA), and performance characteristic is provided when being used in label application Advantageous combination, while keep good machinability.For example, for the adhesive being exposed in moist or moist environment, It is beneficial with the high-caliber water resistant performance that bleaches.For being used to accommodate the glass of beverage, personal care product or other articles The adhesive label of glass bottle or plastic bottle, this wet condition are common.Also usefully label can be removed and/or can determine again Position, without leaving significant adhesive residue on the bottle or other containers that are removed in label.For reusing or For the container of recycling, this characteristic is even more important.In addition, optical clarity (clear) or transparent adhesive can allow mesh Depending on by similar limpid or transparent container (such as vial) come attachment labels.The ability that adhesive is easily worked is also preferred Characteristic, this enables adhesive to form the coating of high quality preferably on label or other articles.
However, HMPSA is difficult to show all above-mentioned characteristics simultaneously.One reason for this is that the component for improving a characteristic is led to Often there is detrimental effect to another characteristic.For example, bleach can be with using with high score with relocatable required characteristic for low water Son amount and highly viscous adhesive component are associated.However, it uses with high molecular weight and highly viscous adhesive component often Negatively affect the easiness of compounding and the coating property of high quality.
The present inventor is it has now been found that the particular combination of the component optionally used with specified quantitative surprisingly provides High-performance HMPSA, it is whitening to show in demand performance characteristic such as water resistant, relocatability and/or optical clarity The combination of property.Advantageously, these HMPSA are also shown in terms of the machinability during adhesive and label manufacture and application Improvement and good adhesiveness and label quality in end user's product.
Specifically, it has been found that the HMPSA compositions comprising following component：Plasticizer comprising paraffin oil；With comprising Hydrogenate the tackifier of alicyclic hydrocarbon resin；Each optionally there is molecular weight and viscosity in particular range, surprisingly Provide the HMPSA with the combination of above-mentioned performance characteristic.For example, adhesive can be used for production to have the good transparency, it can be again Polarization and resistance at whitening, oil migration, swelling or corrugated label, while be still susceptible to make in standard is with mixing coating application With.
It is without being held to a particular theory, it is believed that paraffin oil and the SIS block copolymer on the basis as HMPSA have well Compatibility because paraffin oil and SIS block copolymer all have linearity molecular structure.The inside of these components of adhesive phase Interaction can play the swelling of such as polymer architecture film surface material of the migration of limitation oil and control bonding and corrugated work With.In addition, hydrogenation alicyclic hydrocarbon resin can increase Hydrogenated cycloaliphatic resins compared with the low molecular weight of linear aliphatic hydrocarbon resin Add the machinability of HMPSA without negatively affecting its softening point.Since HMPSA compositions generally have hydrophobicity, glue The water of mixture, which bleaches, to be also minimized.
In one embodiment, HMPSA includes base polymer, tackifier and plasticizer.In some embodiments, HMPSA further includes polyethylene wax.In some embodiments, base polymer includes styrene-isoprene-phenylethene (SIS) copolymer, tackifier include hydrogenation alicyclic hydrocarbon resin, and plasticizer includes paraffin oil.In preferred embodiments, increase Kinematic viscosity of the agent at 40 DEG C is moulded in 400-1000mm2In the range of/the second.
The base polymer of HMPSA include SIS block copolymer, wherein " S " represent styrene monomer polymerized segment or " block ", " I " represent the polymerized segment or " block " of isoprene monomer.SIS block copolymer can be free from SI diblocks Pure triblock copolymer or can be containing certain percentage SI diblocks.It has been found that higher diblock content can Diblock content that can be related and relatively low with the viscosity increase of SIS block copolymer may have with the elasticity increase of copolymer It closes.The diblock content of HMPSA base polymers can be in 0-50 weight %, such as 0-30 weight %, 5-35 weight %, 10- In the range of 40 weight %, 15-45 weight % or 20-50 weight %.For the upper limit, diblock content can be less than 50 weights % is measured, is, for example, less than 45 weight %, it is small less than 25 weight % less than 30 weight % less than 35 weight % less than 40 weight % In 20 weight %, less than 15 weight %, less than 10 weight % or less than 5 weight %.For lower limit, diblock content can be extremely Few 5 weight %, at least at least 10 weight %, at least 15 weight %, at least 20 weight %, at least 25 weight %, 30 weight %, until Few 35 weight %, at least at least 40 weight % or 45 weight %.In some embodiments, base polymer, which has, is less than 30 weights Measure the diblock fraction of %.
The styrene-content of SIS block copolymer can also influence the performance characteristic of base polymer.It is it has been found that specific Styrene-content and specific diblock content can to assign base polymer high melt flow index (every at 190 DEG C 10 minutes be more than 20 grams) and low viscosity required performance.These characteristics cause polymer to mix coating work more suitable for matching somebody with somebody together Skill.The styrene-content of base polymer can be in 0-50 weight %, such as 0-30 weight %, 5-35 weight %, 10-40 weight In the range of amount %, 15-45 weight % or 20-50 weight %.For the upper limit, styrene-content can be less than 50 weight %, It is, for example, less than 45 weight %, less than 40 weight %, less than 35 weight %, less than 30 weight %, less than 25 weight %, less than 20 weights % is measured, less than 15 weight %, less than 10 weight % or less than 5 weight %.For lower limit, styrene-content can be at least 5 Weight %, at least 10 weight %, at least 15 weight %, at least 20 weight %, at least 25 weight %, at least 30 weight %, at least 35 weight %, at least at least 40 weight % or 45 weight %.In some embodiments, base polymer, which has, is less than 25 weights Measure the styrene-content of %.
The amount of SIS block copolymer in HMPSA compositions can be in 15-65 weight %, such as 15-45,20-50,25- 55th, in the range of 30-60 or 35-65 weight %.The amount of SIS block copolymer in HMPSA compositions can be in 30-50 weights In the range of amount %, such as 30-42,32-44,34-46,36-48 or 38-50 weight %.For the upper limit, HMPSA compositions In SIS block copolymer amount can be less than 70, less than 65, less than 60, less than 55, less than 50, less than 45 or less than 40 weights Measure %.For lower limit, the amount of the SIS block copolymer in HMPSA compositions can be at least 10, at least 15, at least 20, until Few 25, at least 30, at least 35 or at least 40 weight %.
Suitable commercially available linear SIS block copolymer includes for example being available from Shandong Ju Sage Technology The SIS 1220 of Company LTD. (Shandong Province of China)；Quintac 3433 and Quintac 3421, is available from Nippon Zeon Company, Ltd. (Louisville, KY)；Vector DPX 559, Vector 4111 and Vector 4113, is available from The conjunction of Dexco, Exxon Chemical Co. (Houston, Texas) and Dow Chemical Co. (Midland Mich) Group；And KRATONTM, rubber, such as the Kraton 604x derived from Shell Chemical Co. (Houston, Texas), Kraton D-1117, Kraton D-1107 and Kraton D-1113.
In one embodiment, plasticizer such as paraffin oil plasticizer is high molecular weight paraffin wax oil.It has been found that it uses This high molecular weight plasticizer provides many advantages for adhesive, and that these are not observed is excellent for conventional HMPSA compositions Point.For example, obtained adhesive has the repositioning ability improved after being applied to for the first time on base material.More specifically, In some embodiments, it is interior when 12 first are small after initial apply (such as when 11 first are small, 10 it is small when, 9 is small When, 8 it is small when, 7 it is small when, 6 it is small when, 5 it is small when or 4 it is small when it is interior) at a temperature of higher than 5 DEG C, can will use the mark of the adhesive Label substantially completely remove, such as are substantially completely removed from base material such as polyethylene terephthalate (PET) or vial And it is re-applied to base material such as polyethylene terephthalate (PET) or vial.Fig. 1 shows the bottle of such labelling The example of son 100, wherein label 101 are applied on the outer surface 102 of bottle 100.Due to specific HMPSA compositions, This label can also be cleanly removed after longer time, so as to substantially completely from the outer surface of glass or pet container Remove adhesive.Term " substantially completely remove " in this paper, we refer at least 90%, at least 91%, at least 92%, until Few 93%, at least 94%, at least 95%, at least 96% at least 97%, at least 98% or at least 99% adhesive are protected with label It holds together, the outer surface without the container with adhesive label keeps together.
Another advantage of high molecular weight paraffin wax oil is that adhesive can be used for label of the manufacture with bigger structural intergrity. For example, the label comprising the HMPSA can show reduced corrugation and swelling.The swelling of reduction can be shown that in predetermined measurement It is less than 5% in cycle, less than 4%, less than 3%, the change in size less than 2% or less than 1%.Swelling and corrugation measurement phase can be with More than 3 days, more than 4 days, more than 5 days, more than 6 days, more than 7 days, more than 8 days, more than 9 days or more than 10 days.Higher than 45 DEG C, Higher than 50 DEG C, higher than 55 DEG C, higher than 60 DEG C, higher than 65 DEG C or higher than 70 DEG C at a temperature of storage during, it is observed that The swelling and corrugation of reduction.It is more than 80% in relative humidity, more than 82%, more than 84%, more than 86%, more than 88% or is more than Reduced swelling and corrugation can be observed during 90% storage.In some embodiments, under 85% relative humidity After being stored 7 days at after being stored 4 days at more than 65 DEG C or more than 50 DEG C, the label comprising HMPSA dimensionally without variation or Variation on each dimension (such as longitudinal (machine direction) and horizontal) is less than 2%.
And, it was surprisingly found now that these paraffin oils can improve the stability of label, while in label layer and interlayer The migration of oil is less, and small more than the bonding leakage of the original area occupied of the label of bonding.These improvement not only increase Validity of the label in terms of pasting article and anchoring and retaining printing instruction, and add label from the angle of end user Vision present.Since label is commonly used in being presented important information or improving the visibility or attraction of the consumer goods, these Improve the value for being remarkably improved label.
The amount of paraffin oil plasticizer in HMPSA compositions can in 5-35 weight %, such as 5-23,8-26,11-29, In the range of 14-32 or 17-35 weight %.The amount of paraffin oil plasticizer in HMPSA compositions can in 14-26 weight %, Such as in the range of 14-21.2,15.2-22.4,16.4-23.6,17.6-24.8 or 18.8-26 weight %.For the upper limit, The amount of paraffin oil plasticizer in HMPSA compositions can be less than 38, less than 35, less than 32, less than 29, less than 26, less than 23 Or less than 20 weight %.For lower limit, the amount of the paraffin oil plasticizer in HMPSA compositions can be at least 2, at least 5, until Few 8, at least 11, at least 14, at least 17 or at least 20 weight %.
Paraffin oil plasticizer can have 400-1000, such as 400-700,500-800,600-900,700-1000, The number-average molecular weight of 400-500,500-600,600-700,700-800,800-900 or 900-1000.For the upper limit, plasticising Agent, which can have, is less than 1000, is, for example, less than 900, less than 800, less than 700, and the number-average molecular weight less than 600 or less than 500. For lower limit, plasticizer can have at least 400, for example, at least 500, at least 600, at least 700, and at least 800 or at least 900 number-average molecular weight.
Paraffin oil plasticizer can also have high viscosity.Kinematic viscosity can be for example using Chinese Industrial Standards (CIS) BG/T265-1988's Program measures.Paraffin oil plasticizer can have the kinematic viscosity at 40 DEG C as follows：400mm-1000mm2/ the second, such as 400-700mm2/ second, 500-800mm2/ second, 600-900mm2/ second, 700-1000mm2/ second, 400-500mm2/ second, 500- 600mm2/ second, 600-700mm2/ second, 700-800mm2/ second, 800-900mm2/ second or 900-1000mm2/ the second.For the upper limit, Plasticizer, which can have, is less than 1000mm2/ the second is, for example, less than 900mm2/ the second, less than 800mm2/ the second, less than 700mm2It is/the second, small In 600mm2/ second or less than 500mm2The kinematic viscosity of/second.For lower limit, the kinematic viscosity of plasticizer can be more than 400mm2/ the second, it is greater than 500mm2/ the second, more than 600mm2/ the second, more than 700mm2/ the second, more than 800mm2/ the second is more than 900mm2/ the second.
It has been found that the use of the tackifier with low molecular weight and viscosity advantageously (part) counteracts the height of plasticizer Molecular weight and viscosity.It was found by the inventors that if total viscosity of HMPSA is too high, the machinability of adhesive may be damaged. Specifically, the adhesive with viscosity higher may be more difficult to coated with mixing with the relevant standard of adhesive label's production It is used in journey.In general, being reduced with the viscosity of adhesive, the machinability of adhesive improves, and the adhesive coating of gained Evenly with it is consistent.
Many common linear aliphatic hydrocarbon tackifier have the weight average molecular weight in the range of 1000-4000.Inventor is It has been observed that by using clicyclic hydrocarbon tackifier resins in HMPSA, it may be advantageous to avoid high molecular weight linear aliphatic hydrocarbon.Fat Ring race hydrocarbon tackifier can have relatively low weight average molecular weight, in 300-1000 or 300-800, such as 300-600,400-700, In the range of 500-800,300-400,400-500,500-600,600-700 or 700-800.For the upper limit, tackifier can It is, for example, less than 700 with less than 800, less than 600, the weight average molecular weight less than 500 or less than 400.For lower limit, thickening Agent can have at least 300, for example, at least 400, at least 500, at least 600 or at least 700 weight average molecular weight.As other benefit Place, the relatively high polarity and space steric effect of clicyclic hydrocarbon chemical constitution can also be used for reducing in respective labels layer and interlayer Oil migration.Moreover, the hydrogenation of resin generates the adhesive phase and label with reduced color, smell and coke granule.
The amount of clicyclic hydrocarbon tackifier in HMPSA compositions can in 15-65 weight %, such as 15-45,20-50, In the range of 25-55,30-60 or 35-65 weight %.The amount of clicyclic hydrocarbon tackifier in HMPSA compositions can be in 30-50 In the range of weight %, such as 30-42,32-44,34-46,36-48 or 38-50 weight %.For the upper limit, HMPSA combinations The amount of clicyclic hydrocarbon tackifier in object can be less than 70, less than 65, less than 60, less than 55, less than 50, less than 45 or less than 40 Weight %.For lower limit, the amounts of the clicyclic hydrocarbon tackifier in HMPSA compositions can be at least 10, at least 15, at least 20, At least 25, at least 30, at least 35 or at least 40 weight %.
HMPSA can optionally include polyethylene wax.The optional polyethylene wax of HMPSA, which can play, increases the hydrophobic of adhesive The effect of property.This increased hydrophobicity can help to improve the resistance that adhesive bleaches to water and adhesive neatly The ability for removing or repositioning.It is also an option that specific polyethylene wax to be further to reduce the overall viscosity of HMPSA, and it is right The transparency of adhesive has minimum influence.
Polyethylene wax can be selected to have specific hardness number.Hardness number can use such as U.S. material to be assisted with experiment Inter-hole testing in meeting (ASTM) standardization program ASTM D5 measures.Hardness in this program is defined as standard pin and wears The distance in terms of 1/10th millimeters of saturating measured material sample.Polyethylene wax can have 3-10, such as 3-6,4-7,5-8,6-9, Hardness number in the range of 7-10,3-4,4-5,5-6,6-7,7-8,8-9 or 9-10.For the upper limit, polyethylene wax can have It is, for example, less than 9 less than 10, less than 8, less than 7, less than 6, the hardness number less than 5 or less than 4.For lower limit, polyethylene wax can To have at least 3, for example, at least 4, at least 5, at least 6, at least 7, at least 8 or at least 9 hardness number.
Polyethylene wax can have relatively low viscosity, such as be glued by the dynamic of Brookfield viscosity meters Degree.Polyethylene wax can have 150-500 centipoises (cps), such as 150-300 centipoises, 250-400 centipoises, 350- at 140 DEG C The dynamic viscosity of 500 centipoises, 150-200 centipoises, 200-250cps, 250-300cps, 300-350cps or 350-400cps.Just For the upper limit, dynamic viscosity of the polyethylene wax at 140 DEG C is smaller than 500cps, less than 450cps, less than 400cps, is less than 350cps, less than 300cps, less than 250cps or less than 200cps.For lower limit, polyethylene wax can have extremely at 140 DEG C Few 150cps, at least for example, at least 200cps, at least 250cps, at least 300cps, 350cps, at least 400cps or at least The dynamic viscosity of 450cps.
Polyethylene wax can also be selected to have the specific pour point measured by standardization program ASTM D5949.Pour point defines Become semisolid for liquid and lose the temperature of its flow behavior.The pour point of polyethylene wax can be more than 90 DEG C, more than 91 DEG C, greatly In 92 DEG C, more than 93 DEG C, more than 94 DEG C, more than 95 DEG C, more than 96 DEG C, more than 97 DEG C, more than 98 DEG C, more than 99 DEG C, more than 100 DEG C, more than 101 DEG C, more than 102 DEG C, more than 103 DEG C, more than 104 DEG C, more than 105 DEG C, more than 106 DEG C, more than 107 DEG C, it is more than 108 DEG C, more than 109 DEG C or more than 110 DEG C.In some embodiments, the pour point of polyethylene wax is more than 100 DEG C.
The amount of polyethylene wax in HMPSA compositions can be in 0-5 weight %, such as 0-3,0.5-3.5,1-4,1.5- In the range of 4.5 or 2-5 weight %.In HMPSA compositions the amount of polyethylene wax can in 0-2 weight %, such as 0-1.2, In the range of 0.2-1.4,0.4-1.6,0.6-1.8 or 0.8-2 weight %.For the upper limit, the polyethylene in HMPSA compositions The amount of wax can be less than 5, less than 4, less than 3, less than 2, less than 1.5, less than 1 or less than 0.5 weight %.For lower limit, The amount of polyethylene wax in HMPSA compositions can be zero or at least 0.5, at least 1, at least 1.5, at least 2 or at least 2.5 weights Measure %.
The overall viscosity of HMPSA can cause by the dynamic of the adhesive at 140 DEG C of Brookfield viscosity meters State viscosity is in 10,000-20,000cps, such as 10,000-14,000cps, 12,000-16,000 centipoise, and 14,000-18,000 Centipoise, 16,000-20,000 centipoise, 10,000-12,000 centipoise, 12,000-14,000 centipoise, 14,000-16,000 centipoise, 16,000-18,000 centipoise or 18,000-20, in the range of 000 centipoise.For the upper limit, HMPSA can have at 140 DEG C It is, for example, less than 18,000cps less than 20,000cps, less than 16,000cps, less than 14,000cps or less than 12,000cps's Dynamic viscosity.For lower limit, HMPSA at 140 DEG C can have at least 10,000, for example, at least 12,000cps, at least 14, 000cps, the dynamic viscosity of at least 16,000cps or at least 18,000cps.
HMPSA can as above prepare to have slightly white or colourless appearance.HMPSA can also be configured to high definition Clear degree and transparency.This can be provided in the application of limpid or clear binder or label is needed for adhesive or respective labels Benefit.For example, limpid label can be used together with a variety of attaching surfaces or material, to allow these attaching surfaces Color or texture keep visible by label.Limpid or transparent adhesive or label can also be used for limpid or transparent container. For example, in the beverage industry of vial or plastic bottle is used, the label of this " limpid to limpid (clear on clear) " It is common.Limpid in limpid label, any printed article on label tends to show as to just look like to be directly printed on The same with container sheet, this is partially due to the transparency of adhesive and shortage color.In order to produce with required shortage face The adhesive of color, tackifier resins, plasticizer oil, wax, filler and other ingredients are each selected in adhesive composition With gently to non-coloring and/or good dissolubility.
The clarity and transparency of HMPSA can be according to standard agreement ASTM D1003 as haze value or according to standard agreement The opacity contrast ratio of ASTM D2805 measures.Haze value is defined as by the percentage of the transmitted light of sample scattering, institute It is and the reason for generating above-mentioned reduction by its observation to state sample.It is, for example, less than 10 that the haze value of HMPSA, which can be, small less than 9 In 8, less than 7, less than 6, less than 5, less than 4, less than 3, less than 2 or less than 1.In some embodiments, HMPSA has and is less than 5 haze value.Opacity contrast ratio is defined as the ratio of the reflectivity of the same film on the film and white substrate on black matrixes Rate.It is, for example, less than 40 that the opacity contrast ratio value of HMPSA, which can be, less than 35, less than 30, less than 25, less than 20, is less than 15, less than 10 or less than 5.In some embodiments, the opacity contrast ratio of HMPSA is less than 20.
Another advantage of HMPSA preparatons be bleach, clarity and transparency change from temperature or humidity it is notable It influences.For example, when adhesive be heated to 65 DEG C and when 1 is small after haze value and opacity contrast ratio can separately become Change less than 30%, it is small less than 16% less than 18% less than 20% less than 22% less than 24% less than 26% less than 28% In 14%, less than 12%, less than 10%, less than 8%, less than 6%, less than 4% or less than 2%.Heating can include making bonding Agent is contacted with being heated to 65 DEG C of water.Heating can include immersing adhesive in 65 DEG C of water.
The component of HMPSA compositions can be selected to meet food contact requirements and be typically categorized into food security 's.For example, adhesives of the HMPSA as food security can be made using hydrogenated tackifier and food-grade paraffin wax oil.
The invention further relates to the labels of the hot melt pressure sensitive adhesive comprising the present invention.Label includes receiving printing mark Facestock layer and with the hot melt pressure sensitive adhesive layer that forms as described above.Label can also include one or more facestock layers, One or more optional printing layers, one or more adhesive phases and optional backing layer.This theme can be used in not Have in the label of printing, but in many embodiments, label includes one or more printing zones.
Fig. 2 shows multilayer labels according to an embodiment.Shown label 200 include facestock layer 201, HMPSA layers 202 and backing layer 203.HMPSA layer arrangements are on the surface 204 closer to backing layer of facestock layer.The opposed surface of facestock layer 205 can be configured to receive printing mark.The optional markings can be directly printed onto on surface 205；Be embedded in layer 201,202 or In any layer in 203；Or it is printed on any other surface of label 200.Layer shown in Fig. 2 can be straight each other as shown in the figure It connects and is positioned adjacent to or can have one or more extra plays between them.Additional layer can include such as one Or multiple coatings, supporting layer, printing layer, reflecting layer, laminate layers etc..Any one or more shown layers can also include two Or more sublayer, each sublayer there are different compositions, structure and function.
Plane materiel can include such as paper facer, cardboard plane materiel, plastics plane materiel, the multilayer layer pressure surface including paper layer and plastic layer Material or in the industry common any other material.Laminated multi-layer plane materiel can include the paper layer of plastic covering layer.Multilayer layer The plastic layer of pressure surface material can be squeezed out or is applied on paper layer.Paper layer can include for example high machine-glazed paper, semi-glossy paper, lithographic printing Paper or electronic data processing (EDP) paper；And such as multi-color printing can be arranged to, typewriter printing or inkjet printing. Plastic layer can include such as polyester, such as PET；Polyolefin such as polypropylene (PP), ethylene-propylene copolymer, polyethylene (PE)； And other materials.Other polymers membrane material includes polyurethane based-polymer, such as polyether-polyurethane and polyester-polyurethane；Amide Based polyalcohol, including polyether-polyamide copolymer；Acrylic acid based polymer, including polyacrylate and Ethylene/vinyl acetate Copolymer；Polymer based on polyester, including polyether polyester；Vinyl chloride；Vinylidene chloride；Polystyrene；Polyacrylonitrile；Poly- carbon Acid esters；Polyimides；Or similar material.Plane materiel can include flexible facestock.Plane materiel can include transparent polymer film.At certain May be useful by the use of " contraction " film or oriented film as facestock layer in a little applications.Subject of the present invention includes, for example, all If the Biaxially oriented film of PET is as facestock layer.
In some embodiments, label further includes the printed article being arranged in facestock layer.Printed article can include ink, The layer of dyestuff, pigment or similar material or region.It is understood that " dyestuff " and similar terms refer to disperse with molecule or molten Visible light absorbing compound existing for solution form." pigment " and similar terms refer to disperse with non-molecule or particle form existing for Visible light absorbing material or compound.Terms such as " inks " refer to being coated with containing dyestuff and/or pigment or printable prepare Agent.Although this theme is mainly for the label for including the appreciable printed article of vision, it is contemplated that label can be only or main It is included in the printed article indicated under UV light or other conditions.
HMPSA layers may be directly applied to plane materiel and be contacted with plane materiel.There may be centre between plane materiel at HMPSA layers Layer.Label can include the HMPSA and/or plane materiel of two layers or more layer.It can be every with such as 5-30 grams by the HMPSA layers of label The coating weight of square metre (gsm) is applied on plane materiel.The coating weight of adhesive phase can be 6-20gsm, 8-20gsm, 22- 30gsm, 16-40gsm.In some embodiments, adhesive phase coating weight is in the range of 5-40gsm.For the upper limit, Adhesive phase coating weight is smaller than 40gsm, is, for example, less than 35gsm, less than 30gsm, less than 25gsm, less than 20gsm, is less than 15gsm or less than 10gsm.For lower limit, adhesive phase coating weight can be at least 5gsm, for example, at least 10gsm, at least 15gsm, at least 20gsm, at least 25gsm, at least at least 30gsm or 35gsm.
This theme, which can be included in any label configurations as described herein, introduces one or more limpid or hyaline layers.This Theme, which is additionally may included in any label configurations as described herein, introduces one or more metal layers or metal foil.It can also set Think, label construction can also include the combination of one or more hyaline layers and one or more metal layers.In some embodiments In, label is limpid to limpid label, and having includes transparent biaxially oriented polypropylene (BOPP) film, transparent HMPSA layer with it is saturating The laminated compositions of bright PET linings.
In some embodiments, label further includes the lining being arranged on HMPSA layers.Releasable lining can be determined Position is into adjacent with adhesive phase so that adhesive phase is directly or indirectly disposed or sandwiched between the bottom surface of plane materiel and releasable Between lining.Releasable lining may be used as protection cap so that release liner is held in place, until label is ready to be attached to object Body.If a variety of materials and structure can be used as lining comprising lining or release liner in label.In many embodiment party In case, lining is paper or paper base material.In many other embodiments, lining is the polymerization of one or more polymer materials Object film.Typically, at least one face of lining is coated with the releasable material of such as polysiloxanes or polysiloxane based materials.It can be with Understand, the release coated face of lining is placed with to be contacted with the in addition exposed face of adhesive phase.It is applying a label to Before interested surface, lining is removed, so as to the adhesive face of exposure label.Lining can be the form of monolithic.Alternatively, Lining can be multiple portions or the form of panel.
Other additives can be added to HMPSA, to obtain certain institute in one or more of plane materiel or backing layer The characteristic needed.These additives may include for example one or more waxes, surfactant, talcum powder, silicate powder, filling Agent, antifoaming agent, colorant, antioxidant, ultra-violet stabilizer, luminous agent, crosslinking agent, buffer, anticaking agent, wetting agent, Delustering agent, antistatic agent, plumper, fire retardant, processing aid, extrusion aid etc..
The invention further relates to the labelling containers of the hot melt pressure sensitive adhesive including the present invention.The container of labelling includes limit Determine the container of outer surface and be adhered to the above-mentioned label of container outer surface.In some embodiments, container is bottle. The outer surface that HMPSA is bonded can include the base material of wide scope.Outer surface can include glass, plastics, timber, metal, this A little combinations and other materials.In some embodiments, the outer surface of container includes glass.
In some embodiments, the outer surface of container includes plastics.Outer surface can include any suitable polymer Polymer mixture or formed by it.Polymer or polymeric blends can include such as PET, and recycling gathers to benzene two Formic acid glycol ester (rPET), high density polyethylene (HDPE) (HDPE), polyvinyl chloride (PVC), polylactic acid (PLA), cellulose, biology are poly- Compound film, low density polyethylene), PP, polystyrene (PS), polyester or other types of polymer or plastics.At some In embodiment, plastics include PET.
Although label can usually be removed from container, the outer surface of container can retain a part for label to be glued Close adhesive to the container.The adhesive residue may pollute or disturb subsequent container operation, such as washing later, It labels again or container recycles.In some embodiments, the label provided can be removed from outer surface, and essentially all Adhesive holding placed together with label and/or retain rather than stay on the outer surface.
The invention further relates to the methods for applying a label to container.This method includes providing the container and root for limiting outer surface According to the label of embodiment.This method further includes the outer surface that label is adhered to container, thus applies a label to container.
Label can be in batches, continuously or semi-continuously mode be adhered to one or more containers or product.Before the use, One or more linings can be removed from label, so as to the adhesive face of exposure label.Then by adhesive face and label with Container or product into contact simultaneously apply a label to thereon.Bonding can also include one or more operations, that is, press or with other Mode applies pressure to promote the contact and/or bonding with container on label；Such as by heat and/or exposed to UV light come Activation and/or curing adhesive；And/or drying process.
Scheme is implemented as follows in imagination.It is contemplated that all combinations of feature and embodiment.
Embodiment 1：A kind of hot melt pressure sensitive adhesive, it includes：Styrene-isoprene-styrene copolymer；Comprising Hydrogenate the tackifier of alicyclic hydrocarbon resin；Plasticizer, it includes the kinematic viscosity at 40 DEG C in 400-1000mm2In the range of/the second Paraffin oil；With the polyethylene wax less than 5 weight %.
Embodiment 2：The embodiment of embodiment 1, wherein tackifier have dividing equally again in the range of 300-1000 Son amount.
Embodiment 3：The embodiment of any of embodiment 1 or 2 embodiment, wherein the plasticizer have Number-average molecular weight in the range of 400-1000.
Embodiment 4：The weight average molecular weight of the embodiment of embodiment 3, wherein tackifier is divided equally in the number of plasticizer Within the 10% of son amount.
Embodiment 5：In the embodiment of any of embodiment 1-4 embodiment, wherein hot melt pressure sensitive adhesive The concentration of styrene-isoprene-styrene copolymer is in the range of 15-65 weight %, and wherein tackifier are in melt pressure sensitive Concentration in adhesive in the range of 15-65 weight %, and wherein in hot melt pressure sensitive adhesive the concentration of plasticizer in 5- In the range of 35 weight %.
Embodiment 6：In the embodiment of any of embodiment 1-4 embodiment, wherein hot melt pressure sensitive adhesive The concentration of styrene-isoprene-styrene copolymer is in the range of 25-55 weight %, and wherein tackifier are in melt pressure sensitive Concentration in adhesive is in the range of 25-55 weight %, and the concentration of plasticizer is in 15-25 weights wherein in hot melt pressure sensitive adhesive In the range of amount % and wherein concentration of the polyethylene wax in hot melt pressure sensitive adhesive is less than 2 weight %.
Embodiment 7：The embodiment of any of embodiment 1-6 embodiment the, wherein styrene-isoamyl two Alkene-styrol copolymer has the diblock fraction less than 30 weight %.
Embodiment 8：The embodiment of any of embodiment 1-7 embodiment, wherein styrene-isoprene- Styrol copolymer has the styrene-content less than 25 weight %.
Embodiment 9：The embodiment of any of embodiment 1-8 embodiment, wherein plasticizer are at 40 DEG C Kinematic viscosity is in 400-700mm2In the range of/the second.
Embodiment 10：The embodiment of any of embodiment 1-9 embodiment, wherein polyethylene wax are at 140 DEG C There is down the dynamic viscosity of 150-500cps.
Embodiment 11：The pour point of the embodiment of any of embodiment 1-10 embodiment, wherein polyethylene wax More than 100 DEG C.
Embodiment 12：The embodiment of any of embodiment 1-11 embodiment, wherein hot melt pressure sensitive adhesive With the haze value less than 5.
Embodiment 13：The embodiment of any of embodiment 1-12 embodiment, wherein hot melt pressure sensitive adhesive With the opacity contrast ratio less than 20.
Embodiment 14：The embodiment of embodiment 12, wherein hot melt pressure sensitive adhesive is being heated to 65 DEG C and through 1 After hour, haze value variation is less than 20%.
Embodiment 15：According to the embodiment of embodiment 13, wherein hot melt pressure sensitive adhesive is being heated to 65 DEG C And when 1 is small after, the variation of opacity contrast ratio is less than 20%.
Embodiment 16：The embodiment of any of embodiment 1-15 embodiment, wherein the melt pressure sensitive glues Dynamic viscosity of the mixture at 140 DEG C is in the range of 10,000-20,000 centipoises.
Embodiment 17：A kind of label, the plane materiel including printing mark can be received；And appoint in embodiment 1-16 The hot melt pressure sensitive adhesive of the hot melt pressure sensitive adhesive of one embodiment.
Embodiment 18：The embodiment of embodiment 17 further includes the lining being arranged on hot melt pressure sensitive adhesive layer In.
Embodiment 19：The embodiment of any of embodiment 17 or 18 embodiment, wherein label have longitudinal direction Length and lateral length, and wherein by label when being stored four days more than 65 DEG C and under 85% relative humidity longitudinal length and horizontal stroke Each change less than 2% to length.
Embodiment 20：A kind of container of labelling, including the container with outer surface；With the outer surface for being adhered to container Embodiment 17-19 any one embodiment label.
Embodiment 21：The outer surface of the embodiment of embodiment 20, wherein container includes glass, poly terephthalic acid Glycol ester or other plastics.
Embodiment 22：The embodiment of any one in the embodiment of embodiment 20 or 21, wherein container are bottles Son.
Embodiment 23：The embodiment of any of embodiment 20-22 embodiment, wherein can be incited somebody to action by removing Label is substantially completely removed from container.
Embodiment 24：A kind of method for applying a label to container, the described method includes the appearances for providing restriction outer surface Device；The label of any of embodiment 17-19 embodiment is provided；And label is adhered to the outer surface of container, thus will Label applies to container.
Embodiment 25：The outer surface of the embodiment of embodiment 24, wherein container includes glass, poly terephthalic acid Glycol ester or other plastics.
Embodiment 26：The embodiment of any of embodiment 24 or 25 embodiment, wherein label can be big In at a temperature of 5 DEG C after bonding first 8 it is small when interior substantially completely removed from container and be re-applied to container.
In view of following non-limiting example, is better understood with the present invention.
Embodiment
Eight kinds of HMPSA compositions are prepared according to the preparaton listed in the following table 1.The physics and performance characteristic of HMPSA is tested, Such as it is swollen, dynamic viscosity and processing performance.As a result also provided in table 1.
Label is prepared using the HMPSA of comparative example A and B and embodiment 1, and tests its swelling.Use embodiment 1 The label of HMPSA (and using those of comparative example A and B) shows extraordinary swelling result.As described above, swelling reduces Adhesive there is the structural intergrity of bigger, and can also show less than the adhesive with bigger swelling tendency Oil migration.Excellent performance characteristic is also shown using the label of the HMPSA of embodiment 1 to combine, such as water resistant is whitening, then it is fixed Position property and/or optical clarity.Importantly, the HMPSA of embodiment 1 has relatively low viscosity, it is easy to process, and cause height The label of quality.On the contrary, the HMPSA of comparative example A and B show much higher viscosity, this causes processing difficulties and second-rate Label.
As shown in table 1, the preparaton of embodiment 1-4 and 8 using kinematic viscosity at 40 DEG C in 400-1000mm2/ second scope Interior plasticizer.These preparatons especially provide the hot melt of advantageous combination and excellent machinability with performance characteristic PSA.These embodiment adhesives have high-caliber resistance at whitening, good removable property, optical clarity and it is low swelling and Oily migration.Importantly, embodiment 1-4 shows low dynamic viscosity, such as in the range of 10000-20000 centipoises, This provides the coating to form high quality, i.e., excellent machinability.In contrast, comparative example A-D shows much higher move State viscosity (far above 20000 centipoises, and is more than 80000 centipoises) in some cases.These comparative examples, at least partially due to High viscosity plasticizer shows the machinability gone on business.
In addition, as shown in table 1, the HMPSA preparatons of embodiment 1-4 respectively contain preferred model of the molecular weight in 300-800 Enclose interior tackifier.These relatively low tackifier molecular weight can be used for the number-average molecular weight for partly offsetting plasticizer, Reduction overall dynamic viscosity is further helped in, such as in the favourable scope of 10000-20000 centipoises.In contrast, compare The preparaton of example A-D is more than 1000 tackifier using number-average molecular weight.There is obtained HMPSA much higher dynamic to glue Degree, is greater than 35000 centipoises, this is to procedure of processing as caused difficulty with mixing coating.Therefore, embodiment 1-4 and comparative example A-D is demonstrated meets low swelling, low simultaneously by lower molecular wt tackifier and high number-average molecular weight plasticizer combinations to prepare The importance of the adhesive of the required performance of oil migration and low viscosity.
In short, the preparaton of the data display comparison example in table 1 is used in the viscosity and/or molecular weight ranges being discussed herein Outside high viscosity plasticizer (and optional plasticizer and/or tackifier).These comparative examples have undesirable physics and/or Performance characteristic.These tables of data understand the importance of said combination and key.
Although the present invention is described in detail, modification within the spirit and scope of the present invention is for this field Technical staff will be apparent.In view of the above discussion, the relevant knowledge of this field and above in conjunction with background and detailed description The bibliography of discussion, the disclosure of which are all incorporated herein by reference.In addition, it is to be understood that the present invention's is each Various features described in the part and following described and/or the appended claims of aspect and various embodiments can be complete Portion or partially combined or exchange.In front in the description of various embodiments, those with reference to another embodiment are implemented Scheme can suitably with other combination of embodiment, as the skilled person will appreciate.Moreover, this field is common Technical staff will be understood that the description of front is merely possible to example, it is not intended to the limitation present invention.

Claims (26)

1. a kind of hot melt pressure sensitive adhesive, it includes：
Styrene-isoprene-styrene copolymer；
Include the tackifier of hydrogenation alicyclic hydrocarbon resin；
Plasticizer, it includes the kinematic viscosity at 40 DEG C in 400-1000mm2Paraffin oil in the range of the/second；With
Less than the polyethylene wax of 5 weight %.
2. hot melt pressure sensitive adhesive according to claim 1, wherein tackifier have the Weight-average molecular in the range of 300-1000 Amount.
3. according to the hot melt pressure sensitive adhesive of claim 1 or 2, wherein the plasticizer has the number in the range of 400-1000 Average molecular weight.
4. the weight average molecular weight of hot melt pressure sensitive adhesive according to claim 3, wherein tackifier is in the equal molecule of number of plasticizer Within the 10% of amount.
5. styrene-isoamyl in hot melt pressure sensitive adhesive as claimed in one of claims 1-4, wherein hot melt pressure sensitive adhesive The concentration of diene-styrene copolymer is in the range of 15-65 weight %, and wherein tackifier are dense in hot melt pressure sensitive adhesive Degree in the range of 15-65 weight %, and wherein in hot melt pressure sensitive adhesive plasticizer concentration 5-35 weight % model In enclosing.
6. styrene-isoamyl in hot melt pressure sensitive adhesive as claimed in one of claims 1-4, wherein hot melt pressure sensitive adhesive The concentration of diene-styrene copolymer is in the range of 25-55 weight %, and wherein tackifier are dense in hot melt pressure sensitive adhesive Degree is in the range of 25-55 weight %, and the concentration of plasticizer is in the scope of 15-25 weight % wherein in hot melt pressure sensitive adhesive Interior and wherein concentration of the polyethylene wax in hot melt pressure sensitive adhesive is less than 2 weight %.
7. hot melt pressure sensitive adhesive as claimed in one of claims 1-6, wherein the styrene-isoprene-phenylethene Copolymer has the diblock fraction less than 30 weight %.
8. hot melt pressure sensitive adhesive as claimed in one of claims 1-7, wherein styrene-isoprene-phenylethene are copolymerized Object has the styrene-content less than 25 weight %.
9. the kinematic viscosity of hot melt pressure sensitive adhesive as claimed in one of claims 1-8, wherein plasticizer at 40 DEG C exists 400-700mm2In the range of/the second.
10. hot melt pressure sensitive adhesive as claimed in one of claims 1-9, wherein polyethylene wax have 150- at 140 DEG C The dynamic viscosity of 500cps.
11. the pour point of hot melt pressure sensitive adhesive as claimed in one of claims 1-10, wherein polyethylene wax is more than 100 DEG C.
12. according to the hot melt pressure sensitive adhesive of any one of claim 1-11, wherein hot melt pressure sensitive adhesive has less than 5 Haze value.
13. hot melt pressure sensitive adhesive according to claim 12, wherein by hot melt pressure sensitive adhesive be heated to 65 DEG C and through 1 it is small when Afterwards, haze value variation is less than 20%.
14. according to the hot melt pressure sensitive adhesive of any one of claim 1-13, wherein hot melt pressure sensitive adhesive, which has, is less than 20 Opacity contrast ratio.
15. hot melt pressure sensitive adhesive according to claim 14, wherein hot melt pressure sensitive adhesive is being heated to 65 DEG C and by 1 After hour, the variation of opacity contrast ratio is less than 20%.
16. according to the hot melt pressure sensitive adhesive of any one of claim 1-15, wherein the hot melt pressure sensitive adhesive is at 140 DEG C Under dynamic viscosity in the range of 10,000-20,000 centipoises.
17. a kind of label, including：
The plane materiel of printing mark can be received；And
The hot melt pressure sensitive adhesive of hot melt pressure sensitive adhesive comprising any one of claim 1-16.
18. label according to claim 17, also includes：
The lining being arranged on hot melt pressure sensitive adhesive layer.
19. according to the label of claim 17 or 18, wherein label has longitudinal length and lateral length, and wherein by label When being stored four days more than 65 DEG C and under 85% relative humidity, longitudinal length and lateral length each change less than 2%.
20. a kind of container of labelling, including：
Container with outer surface；With
It is adhered to the label of any one of the claim 17-19 of the outer surface of container.
21. the outer surface of the container of labelling according to claim 20, wherein container includes glass, poly terephthalic acid second two Alcohol ester or other plastics.
22. according to the container of the labelling of claim 20 or 21, wherein container is bottle.
23. according to the container of the labelling of any one of claim 20-22, wherein can be substantially complete by label by removing It is removed entirely from container.
24. a kind of method for applying a label to container, the described method includes：
The container for limiting outer surface is provided；
The label of any one of claim 17-19 is provided；With
Label is adhered to the outer surface of container, so as to apply label to container.
25. the outer surface of method according to claim 24, wherein container include glass, polyethylene terephthalate or its His plastics.
26. according to the method for claim 24 or 25, wherein label can at a temperature of more than 5 DEG C after bonding first 8 It is substantially completely removed in hour from container and is re-applied to container.
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JP6807463B2 (en) 2021-01-06
TWI659083B (en) 2019-05-11
JP2020510715A (en) 2020-04-09
KR102263275B1 (en) 2021-06-11
KR20190115028A (en) 2019-10-10
TW201837150A (en) 2018-10-16
WO2018145257A1 (en) 2018-08-16

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