CN201749205U - Green closed lens type retroreflective sheet - Google Patents

Abstract

The utility model provides a green closed lens type retroreflective sheet which has higher retroreflection performance than that of the traditional closed lens type retroreflective sheet and can display desirable information or patterns so as to be stuck in desirable places. The green closed lens type retroreflective sheet is characterized in by comprising a surface protecting layer (1), a printing layer (2), a retaining layer (3), a plurality of tiny glass balls (4) retained by the retaining layer (3), a focus forming layer (5), a mirror surface reflecting layer (6) and an adhesive layer (7), wherein the average grain diameter of the tiny glass balls (4) is in the range of 70 mum-100 mum, and the grain diameter distribution is in the range of the average grain diameter +/-10 of above 75% of grains; and at least one of the surface protecting layer (1) and the retaining layer (3) is colorized, and the hue is positioned in the range between (x, y) in an XYZ surface color system, wherein (x, y) is equal to (0.007, 0.703) (0.026, 0.399) (0.177, 0.362) (0.248, 0.409).

Description

Green enclosed lens retroreflection sheet

Technical field

The utility model relates to green enclosed lens retroreflection sheet (enclosed-lensretroreflective sheeting), particularly, relate at road markings, the sign class of engineering sign etc., the licence plate class of vehicle such as automobile and motorcycle, clothing, the safety equipment class of life-saving appliances etc., the mark of billboard etc., various authenticating tag classes, and visible light, in the reflecting plate of laser or ultrared reflection sensor class etc., has gratifying reflex reflection performance, and can show desired information or pattern, and then can stick on the green enclosed lens retroreflection sheet in desirable place.

More specifically, the utility model relates to and has than the higher reflex reflection performance of existing enclosed lens retroreflection sheet and can show desired information or pattern and then can stick on the green enclosed lens retroreflection sheet in desirable place.

Background technology

All the time, retroreflection sheet towards the light of source reflection incident is well-known, sign class in road markings, engineering sign etc., the licence plate class of vehicle such as automobile and motorcycle, the safety equipment class of clothing, life-saving appliances etc., the mark of billboard etc., various authenticating tag classes, and obtained widespread use in the reflecting plate of visible light, laser or ultrared reflection sensor class etc.

As such retroreflection sheet, known have encapsulated lens retroreflection sheet (encapsulated-lens retroreflective sheeting) and an enclosed lens retroreflection sheet that has used retroreflective elements, wherein, this retroreflective elements possesses the specular layer that tiny glass ball and vacuum evaporation have metal (being aluminium basically).

Example as the encapsulated lens retroreflection sheet, at the special public clear 40-7870 communique (patent documentation 1 of the Japan of Mckenzie, the 3rd, 190, No. 178 instructionss of corresponding United States Patent (USP)), the spy of Japan of Mcgrath opens clear 52-110592 communique (patent documentation 2, corresponding United States Patent (USP) 4,025, No. 159 instructions) and the spy of Bailey etc. open clear 62-121043 communique (patent documentation 3, corresponding United States Patent (USP) the 5th, 064, No. 272 instructions) have open in detail in.

As the example of enclosed lens retroreflection sheet, the spy of Japan of Belisle open have in the clear 59-71848 communique (patent documentation 4, the 4th, 721, No. 649 instructionss of corresponding United States Patent (USP)) open in detail.

About the reflex reflection performance, because it is different to observation angle, the desired angle of incident angle by the combination of observation angle and angle of light degree, therefore can not lump together, but with regard to the reflex reflection performance on the observation angle about 0.2 degree～0.5 degree, general encapsulated lens retroreflection sheet has the reflex reflection performance more excellent than enclosed lens retroreflection sheet at least.

Yet, for the Y value of using as being presented at the index of the whiteness under the natural light, the enclosed lens retroreflection sheet is usually than encapsulated lens retroreflection sheet height, and then relate to the stability that does not produce films such as fold after productivity, operability and the construction, also be that the enclosed lens retroreflection sheet is than capsule-type retroreflection sheet excellence.

Patent documentation 1: the special public clear 40-7870 communique of Japan

Patent documentation 2: the spy of Japan opens clear 52-110592 communique

Patent documentation 3: the spy of Japan opens clear 62-121043 communique

Patent documentation 4: the spy of Japan opens clear 59-71848 communique

The utility model content

Aforesaid enclosed lens retroreflection sheet is big owing to having high reflex reflection performance and catoptrical Y value, therefore be retroreflection sheet, but further require to have excellent reflex reflection performance on relatively near positive direction and can show desired information or pattern and then can stick on the green enclosed lens retroreflection sheet that is painted in desirable place with excellent properties.Therefore, the purpose of this utility model is to provide a kind of green enclosed lens retroreflection sheet, this green enclosed lens retroreflection sheet can have the reflex reflection performance higher than existing enclosed lens retroreflection sheet on relatively near positive direction, and can show desired information or pattern, and then can stick on desirable place.

In order to achieve the above object; green enclosed lens retroreflection sheet of the present utility model; it is characterized in that; possess: sealer; printed layers; keep layer; by this maintenance layer a plurality of tiny glass ball that is kept; the focus cambium layer; specular layer and adhesive phase; the mean grain size of this tiny glass ball is in the scope of 70 μ m～100 μ m; and size-grade distribution be particle more than 75% in the scope of mean grain size ± 10 μ m; one deck at least in described sealer and the described maintenance layer is colored; and form and aspect are in connection (x in the XYZ color specification system; y)=(0.007; 0.703) (0.026; 0.399) (0.177; 0.362) in (0.248,0.409) this scope of 4.

According to this green enclosed lens retroreflection sheet, because the mean grain size of tiny glass ball is in the scope of 70 μ m～100 μ m, and size-grade distribution be particle more than 75% in the scope of mean grain size ± 10 μ m, therefore on relatively near positive direction, can have high reflex reflection performance.For the inventor, thus still indeterminate by using tiny glass ball so to have the reason of high reflex reflection performance on relatively near positive direction, but under the situation of mean grain size, find that briliancy can extremely reduce less than 70 μ m.In addition, can think to surpass under the situation of 100 μ m in mean grain size, be necessary to form thick focus cambium layer, this moment is because the tendency that has the focus cambium layer to warp, therefore reflected light generation scattering, and reduce with respect to the catoptrical briliancy near positive direction relatively.Have again, if the ratio that is in the particle in mean grain size ± 10 mu m ranges less than 75%, because the ratio of the deviation of tiny glass ball increases, the ratio that does not therefore form specular layer on the focus of the light that penetrates from tiny glass ball will uprise so.Therefore, think that reflected light still scattering will take place, and extreme reduction takes place with respect to the catoptrical briliancy that compares near positive direction.So; because the one deck at least in described sealer and the described maintenance layer is colored; and form and aspect are in connection (x in the XYZ color specification system; y)=(0.007,0.703) (0.026,0.399) (0.177; 0.362) (0.248; 0.409) in this scope of 4,, also retroreflection sheet can be made green even therefore the layer of new painted usefulness is not set.Have again,, just can show desired information or pattern by printed layers being made desired information or pattern.And, can be pasted on desirable place by adhesive phase.

In addition, in above-mentioned green enclosed lens retroreflection sheet, preferably the mean grain size of this tiny glass ball is 80 μ m～90 μ m, and in addition, the size-grade distribution of the particle diameter of this tiny glass ball is preferably in the scope of mean grain size ± 10 μ m and accounts for more than 80%.

According to this green enclosed lens retroreflection sheet, just can have higher reflecting properties.

In addition, in above-mentioned green enclosed lens retroreflection sheet, be that 0.2 degree and incident angle are that the reflex reflection performance is preferably 200cd/1x/m under the condition of 5 degree in view angle ²More than, be that 0.2 degree and incident angle are that the reflex reflection performance is 250cd/1x/m more preferably under the condition of 5 degree in view angle ²More than.

According to this green enclosed lens retroreflection sheet, owing to have higher reflecting properties, so the visuality at night is significantly increased than existing enclosed lens retroreflection sheet, and can be used to widely in the product.

As mentioned above, according to the utility model, can provide a kind of and can have on relatively near positive direction than the higher reflex reflection performance of existing enclosed lens retroreflection sheet and can show desired information or pattern and then can be pasted on the green enclosed lens retroreflection sheet in desirable place.

Description of drawings

Fig. 1 is the cross section structure skeleton diagram of the related green enclosed lens retroreflection sheet of expression embodiment of the present utility model.

Symbol description

1 ... sealer

2 ... printed layers

3 ... keep layer

4 ... tiny glass ball

5 ... the focus cambium layer

6 ... specular layer

7 ... adhesive phase

8 ... stripping film

9 ... the incident direction of light

Embodiment

Below to green enclosed lens retroreflection sheet of the present utility model, illustrate in greater detail with embodiment.

Fig. 1 is the cross section structure skeleton diagram of the related green enclosed lens retroreflection sheet of expression embodiment of the present utility model.As shown in Figure 1; green enclosed lens retroreflection sheet 10 possesses: sealer 1, printed layers 2, keep layer 3, be held layer 3 an a plurality of tiny glass ball 4 that is kept, focus cambium layer 5 and specular layer 6 as main composition; wherein, the one deck at least in sealer 1 and the maintenance layer 3 is colored.

In the present embodiment; sealer 1 is to have the layer that total light transmittance is the photopermeability more than 20%; so long as have the resin of such photopermeability; just have no particular limits, constituted by the resin of acryl resin, alkyd resin, fluororesin, vestolit, vibrin, urethane resin and polycarbonate resin etc. or the combination of these resins usually.Particularly from the viewpoint of weatherability and processability, preferred acrylic resins, vibrin, vestolit, wherein, if consider coating adaptability or the dispersiveness etc. of colorant when painted, then special preferred acrylic resins.

In sealer 1, in the scope of the not obvious infringement transparency, can add various adjuvants such as ultraviolet light absorber, stabilizing agent, plasticizer and crosslinking chemical.

Contain in making sealer 1 under the situation of colorant, with respect to solid constituent 100 weight portions of matrix resin, the content of colorant is preferably 1～30 weight portion, and more preferably 5～25 weight portions most preferably are 10～25 weight portions.The addition of colorant needs only at this more than lower limit, then owing to can access painted fully, and obtain excellent visuality, thereby it is preferred, in addition, as long as the addition of colorant is at this below higher limit, then owing to can prevent to produce and keep the excessive hardening of layer undesirable condition such as become fragile, and it is can prevent that characteristics such as physical strength and flexibility are compromised, thereby preferred.As sealer being coloured to green colorant, can enumerate phthalocyanines, chrome green (Viridian) class, chromium oxide class and cadmium class etc., wherein, and from the viewpoint of the transparency and weatherability, the colorant of preferred phthalocyanines.

Also have,, the situation of excellent reflex reflection performance will occur being difficult to obtain, so the preferred non-coloring of sealer or carry out painted with obtaining transparent colorant because if the photopermeability of sealer 1 is poor.

Printed layers 2 is in order to show the layer of the information that conveys to the observer or display pattern.This printed layers 2 is set at the surface of the maintenance layer side of sealer 1 by printing.Printed layers 2 is made of the resin that for example can not see through light.As resin so, there is no particular limitation, but preferably the dispersiveness of colorant and its stability, for solvent dissolubility, weatherability, printing adaptability and with melamine resin, epoxy resin, urethane resin, vinyl, vibrin and the alkyd resin etc. of aspects such as the close attachment performance excellence of film, can use these resins separately, perhaps use these resin combination more than 2 kinds and the material that forms of copolymerization.

Keeping layer 3 is the layers that keep the tiny glass ball 4 of enclosed lens retroreflection sheet 10, so long as have the resin of light transmission, just have no particular limits, constituted by the resin of acryl resin, alkyd resin, fluororesin, vestolit, vibrin, urethane resin and polycarbonate resin etc. or the combination of these resins usually.Particularly from the viewpoint of weatherability and processability, preferred acrylic resins, vibrin, vestolit, wherein, if consider coating adaptability or the dispersiveness etc. of colorant when painted, special preferred acrylic resins.

The molecular weight that forms the resin that keeps layer 3 has no particular limits, but the weight-average molecular weight (the following Mw that slightly is called) of resin is more than 50,000 usually, 50,000～400,000 resin more preferably, more preferably this scope is 100,000～300,000, and, tiny glass ball 4 is moderately fallen in the resin by using the resin that reacts with suitable hardening agent.

Keep the resin solid composition of the used resin of layer 3 to be generally 25～50%, be preferably 30～40%, more preferably 33～38%.Have, keeping the thickness of layer 3 is 15 μ m～50 μ m again.Keeping layer 3 is by number under the folded layer by layer situation about forming, and keeps the coating thickness of the maintenance layer 3 of tiny glass ball 4 to determine in conjunction with the condition of the particle diameter of tiny glass ball 4 etc.

Also have,, keep the total light transmittance of layer 3 to have no particular limits, but be generally more than 80%, be preferably more than 90%, more preferably more than 95% in order to improve the reflex reflection performance.

In addition, keeping layer 3 to contain under the situation of colorant, as long as with to make sealer 1 contain the situation of colorant identical.So, will keep layer to be coloured under the green situation, keeping the total light transmittance of layer is more than 10%, is preferably more than 15%, is preferably more than 20% especially.

In addition, except colorant, keep in the layer 3 at the various adjuvants that in the scope of its rerum natura, can also add ultraviolet light absorber, stabilizing agent, plasticizer and hardening agent etc.

The hardening agent that also can contain in addition, alkylation amino resins, alkylation urea resin and isocyanates crosslinking chemical etc. in case of necessity; The remover of silicon class remover and cellulose family remover etc.; The adjuvant of the surface conditioner of polyester sex change dimethyl silicone polymer, silicon class surfactant and acrylic copolymer etc. etc.

Keep protecting in the layer 3 and have a plurality of tiny glass balls 4.This tiny glass ball 4 is worked in coordination with by focus cambium layer 5 and specular layer 6, thereby has the function that makes the light reflex reflection, and wherein, this specular layer 6 is relative with each tiny glass ball 4.The refractive index of tiny glass ball 4 is generally 2.0～2.5, is preferably 2.0～2.3.

In addition, in the present embodiment, the mean grain size of the tiny glass ball 4 that uses as light is carried out the key element of reflex reflection is 70 μ m～100 μ m.By the mean grain size of increase tiny glass ball 4 like this, thereby just can improve the front reflecting properties of enclosed lens retroreflection sheet 10 than prior art.In addition, the mean grain size of tiny glass ball 4 80 μ m～90 μ m more preferably.

In addition, in the present embodiment, the size-grade distribution of the particle diameter of tiny glass ball 4 is for to account for more than 75% in the scope of mean grain size ± 10 μ m.Have, this size-grade distribution more preferably accounts for more than 80% in the scope of mean grain size ± 10 μ m again.By making size-grade distribution so narrow, thereby the light that incides tiny glass ball 4 from the front is at process focus cambium layer 5 described later and when specular layer 6 reflects, the ratio that connects focus and make reflex reflection on specular layer 6 becomes big, and the reflex reflection performance also just uprises.

In addition, the mensuration of the mean grain size of above-mentioned tiny glass ball 4 and size-grade distribution is following carries out.At first, will become the tiny glass ball 10g that measures sample puts in the dry glass container.Then, in this container, put into the electrolytic solution (trade name: Coulter Isoton III Diluent), stir till being uniformly dispersed, thereby be made into the dispersion soln of tiny glass ball 4 of the BECKMAN corporate system of about 230ml with glass bar.Then, this dispersion soln is placed in the Ku Erte calculating instrument (Coulter Counter) (Multisizer 2) of BECKMAN corporate system and measures.

In addition, focus cambium layer 5 is to be used for specular layer 6 is configured in through the layer on the focal position of the light of each tiny glass ball 4, so long as the resin of photopermeability just has no particular limits, but normally constitute by the combination of resins such as acryl resin, alkyd resin, fluororesin, vestolit, vibrin, urethane resin, polycarbonate resin and butyral resin or these resins.Particularly, preferably constitute by acryl resin, butyral resin from the viewpoint of weatherability, coating adaptability and thermal stability.

In focus cambium layer 5, in the scope of the not obvious infringement transparency, can add various adjuvants such as colorant or ultraviolet light absorber, stabilizing agent, plasticizer and crosslinking chemical.

The molecular weight that forms the resin of focus cambium layer 5 has no particular limits, but the Mw that forms the resin of focus cambium layer 5 usually is more than 100,000, and more preferably Mw is 100,000～400,000, and further preferred Mw is 150,000～300,000.By in this scope and the resin that reacts of use and suitable hardening agent, thereby just can more properly form the focus cambium layer 5 of dome shape.

Viscosity when coating forms the resin of focus cambium layer 5 is generally 10～600cP, is preferably 30～600cP, more preferably 50～200cP.In addition, the resin solid composition of the resin of focus cambium layer 5 is generally 10～40%, is preferably 15～35%, and more preferably 15～25%.If resin solid constituent height, bubble just is rolled in the resin easily so, and the foaming easily that becomes, and becomes a lot of reasons if solid constituent, will become coating weight less than 10%.

Though the thickness of focus cambium layer 5 be with incident the light form that on specular layer 6, connects focus consider that the refractive index of resin waits and determined, but be generally 10 μ m～60 μ m, be preferably 15 μ m～50 μ m, be preferably 20 μ m～40 μ m especially.

In the utility model, the total light transmittance of preferred focus cambium layer 5 is more than 80% in order to improve the reflex reflection performance, more preferably more than 90%, is preferably more than 95% especially.

In addition, specular layer 6 is to be used for catoptrical layer, and the metal by aluminium, silver, chromium, nickel, magnesium, gold and tin etc. constitutes usually.Specular layer 6 is to use these metals and the means by vacuum vapour deposition, sputtering method etc. to form.Also has preferred especially vacuum vapour deposition for the metallic film that is formed uniformly the reflection shapes of substrates.In addition, the thickness of metallic reflector is generally 0.05 μ m～0.2 μ m, is preferably 0.05 μ m～0.15 μ m, is preferably 0.05 μ m～0.1 μ m especially.

In addition, as shown in Figure 1, the enclosed lens retroreflection sheet 10 of present embodiment has the adhesive phase 7 that is used for base material bondings such as aluminium sheet and acrylic boards.The kind that constitutes the resin of adhesive phase 7 has no particular limits, so long as use the resin that is used with resin as common bonding agent to get final product, for example can use acrylic resin, silicon resinoid, rubber resin and phenolic resinoid etc.Wherein, preferably aspect weatherability, show excellence and good acrylic resin or the silicon resinoid of bonding characteristic.

Have no particular limits as the resin that constitutes adhesive phase 7, but the tendency that the suitable confining force of the easy more acquisition of the high more resin of molecular weight is arranged, so preferred usually use Mw is the resin more than 500,000, more preferably using Mw is 500,000～1,200,000 resin, and the further preferred Mw that uses is 600,000～1,000,000 resin.Wherein, be the resin that the resin generation cross-linking reaction 500,000 or more forms if use the crosslinking chemical utilize isocyanates crosslinking chemical etc. to make Mw with functional group, so just can obtain the confining force of excellence especially, thereby most preferably.

Adhesive phase 7 can be arranged on specular layer 6 sides; enclosed lens retroreflection sheet 10 can be pasted on the substrate by this adhesive phase 7; and; the adhesive phase of photopermeability is arranged on the light incident side (sealer 1 side) of enclosed lens retroreflection sheet 10, enclosed lens retroreflection sheet 10 can be pasted on the substrate of photopermeability by this adhesive phase.

In addition, stripping film 8 is set, is attached to the place of not expecting to prevent adhesive phase 7 at the opposition side of specular layer 6 sides of adhesive phase 7.

So the reflex reflection performance of enclosed lens retroreflection sheet 10 preferably view angle be 0.2 the degree and incident angle be 5 the degree conditions under the reflex reflection performance be 30cd/1x/m ²More than, 35cd/1x/m more preferably ²More than, further be preferably 40cd/1x/m ²More than.By having so reflex reflection performance, thereby compare with existing enclosed lens retroreflection sheet, the visuality at night is significantly improved.

Also have, enclosed lens retroreflection sheet 10 is to make according to the method for the following stated.At first, the resin matching fluid that coating engineering substrate surface is protective layer used is also dry, thereby forms sealer 1.Also have, under the painted situation of sealer 1 being carried out green, above-mentioned colorant is blended in the resin matching fluid of sealer.The engineering base material is so long as have full intensity and expansion and all very little material of contraction when being heated, just have no particular limits, for example can use with the base material as material such as polyethylene terephthalate (PET), polyimide and vinyl chloride wherein preferred especially PET.

Coating process just has no particular limits so long as can be coated with the method for specific thickness equably, can preferably use the method for reverse roll rubbing method, the direct rubbing method of comma formula (comma directcoating) etc.

Then, will keep the resin matching fluid of layer 3 usefulness to be applied on the sealer 1 and partial desiccation.Also have, maintenance layer 3 is being carried out above-mentioned colorant being mixed in the resin matching fluid of sealer under the green painted situation.Then, tiny glass ball 4 is spread on the resin of this partial desiccation state and impose thermal treatment.Keep the resin of layer 3 to become under the semiarid degree at each, tiny glass ball 4 is buried underground in the resin, thereby just can be regulated the rate of burying underground.Heat treatment temperature as after having scattered tiny glass ball 4 for example using under acrylic acid situation as resin, is generally 50 ℃～150 ℃, be preferably 70 ℃～130 ℃, be preferably 80 ℃～120 ℃ especially, dry about 5 minutes, be easy to bury underground tiny glass ball 4 and get final product.Then, by resin drying, just can form the maintenance layer 3 that keeps tiny glass ball 4 with the partial desiccation state.

Bury tiny glass ball 4 underground the rate of burying underground that keeps in the layer 3 not special restriction, depend on the kind of the resin that keeps layer 3 and different, for example,, preferred more than 20% with respect to the diameter of tiny glass ball 4 using under acrylic acid situation as the resin that keeps layer 3.

Also have, in existing enclosed lens retroreflection sheet, burying the rate of burying underground that keeps in the layer 3 underground for tiny glass ball 4 is for 50% the degree, because this can improve the front reflecting properties of enclosed lens retroreflection sheet 10, thereby it is preferred, but in the present embodiment, form focus cambium layer 5 owing to being easy to match with the sphere of tiny glass ball 4, therefore preferred focus cambium layer 5 is thin, the rate of burying underground of preferred tiny glass ball 4 is 50～90% in order to form thin focus cambium layer 5 as mentioned above, more preferably 70～80%.Also have, if tiny glass ball 4 becomes big, then the thickness of focus cambium layer 5 will have the tendency of thickening.But, by the rate of burying underground of tiny glass ball 4 being adjusted into 50～90% with the above form, thus can attenuate focus cambium layer 5, and can prevent material foaming of the focus cambium layer 5 that causes owing to focus cambium layer 5 thickenings etc.

Then, on the tiny glass ball 4 and at the resin matching fluid that keeps coating focus cambium layer 5 usefulness on the maintenance layer 3 of tiny glass ball 4.Coating process just has no particular limits so long as can be coated with out the method for specific thickness equably, can preferably use the method for reverse roll rubbing method, the direct rubbing method of comma formula etc.

The resin matching fluid of focus cambium layer 5 usefulness at room temperature is coated with, and carries out heat treated so that resin solidification in case of necessity.Solidification temperature is being used with resin as the focus cambium layer under the situation of acryl resin according to the difference of resin curing agent kind and different, is generally 50 ℃～160 ℃, is preferably 70 ℃～155 ℃, and can be 3 minutes to 10 minutes heat time heating time.In addition, can divide coating for several times to solidify the resin matching fluid of focus cambium layer 5 usefulness in case of necessity.Pass through the cured resin fluid,matching thus, thereby form focus cambium layer 5.

Then, on focus cambium layer 5, form specular layer 7 by metallic film.As the formation method of metallic film, can be rubbing method, vacuum vapour deposition etc., in order to be formed uniformly the metallic film of reflection shapes of substrates, preferred especially vacuum vapour deposition.Metal layer thickness has no particular limits, and is generally 0.05 μ m～0.2 μ m, is preferably 0.05 μ m～0.15 μ m, is preferably 0.05 μ m～0.1 μ m especially.

The condition of the speed temperature vacuum tightness of evaporation etc. is as long as select optimum condition according to machine, and the thickness of metallic film is as long as become the thickness of regulation equably.

Also have, have like that under the situation of adhesive phase 7 at as shown in Figure 1 enclosed lens retroreflection sheet 10, then the resin matching fluid that adhesive phase 7 is formed usefulness is coated on the stripping film 8 and is in addition dry, and will be formed with the surface of intermediate product of specular layer 6 and the surface of adhesive phase fits.Laminating condition is being used under the situation of acrylic resin as bonding agent, while preference is exerted pressure as being heated to about 50～90 ℃ according to the bonding agent that constitutes adhesive phase and different.

At last, as long as peel off the engineering base material, just can obtain the enclosed lens retroreflection sheet 10 with adhesive phase of the present utility model.

[embodiment]

Below enumerate embodiment, comparative example specifies the utility model.Also have, employed assay method is as described below in embodiment, comparative example.

(reflex reflection performance)

As reflex reflection performance analyzer, use Advanced RetroTechnology, INC. Zhi " Model 920 ", the reflex reflection light quantity of the retroreflection sheet sample of 100mm * 100mm is based on JIS Z 9117, incident angle is adjusted to 5 degree, in view angle is that 0.2 degree and view angle are measured 5 points respectively under the condition of 0.5 degree, with the mean value of these 5 somes value as the reflex reflection performance.Also have, on reality is used general incident angle be 5 degree relatively near the positive of retroreflection sheet and be little incident angle, view angle is that 0.2 degree then is smaller view angle.Have, view angle is that 0.5 degree is not then so near the positive of retroreflection sheet and be not little view angle again.

＜embodiment 1 〉

Using the thickness of Teijin Ltd's system as the engineering base material is the transparent pet film (trade name: Supreme Being people Tetoron Film S-75) of 75 μ m.Then; acrylic resin soln (trade name: RS-1200) 100 weight portions with respect to En Xiai chemical industry company limited system; add TOKUSHIKI Co.; Ltd. Zhi colour base (color base) (trade name: AR-8100) 20 weight portions; SANWA CHEMICAL CO.; LTD. Zhi methylated melamine resin solution (trade name: 16 weight portions NIKALAC MS-11); TOKUSHIKICo.; Ltd. Zhi cellulose derivative (trade name: CAB) 6 weight portions; SHIPRO KASEIKAISHA; the ultraviolet light absorber of LTD system (trade name: Seesorb 103) 1.5 weight portions; the levelling agent of BYK-Chemie Japan KK system (trade name: BYK-300) 0.05 weight portion; the catalyzer of Dainippon Ink Chemicals's system (trade name: 0.12 weight portion BECKAMINE P-198); and ratio 16.7 weight portions that become MIBK/ toluene=8/2 as solvent; and mix; thereby make the resin matching fluid that sealer forms usefulness; this resin matching fluid is coated on the engineering base material and in addition dry, thereby forms the green sealer that thickness is approximately 40 μ m.

Then; acryl resin (trade name: RS-3000) 100 weight portions with respect to En Xiai chemical industry company limited system; add TOKUSHIKI Co.; Ltd. Zhi colour base (trade name: AR-8300) 75 weight portions; Sumika Bayer Urethane Co.; Ltd. Zhi isocyanates crosslinking chemical (trade name: 18 weight portions Sumijoule N-75); and as toluene 21 weight portions and MIBK 14 weight portions of solvent; and mix; thereby make the resin matching fluid that keeps layer to form usefulness; then this resin matching fluid is coated on the sealer that is printed with printed layers; descended dry 5 minutes at 70 ℃ afterwards, thereby form the maintenance layer that thickness is approximately the green of 30 μ m.

To have the mean grain size shown in the table 1 and be the tiny glass ball (trade name: NBK1028) be attached to above-mentioned protective seam of En Xiai chemical industry company limited system of the size-grade distribution of the ratio shown in the table 1 as particle in the scope of mean grain size ± 10 μ m; and in addition thermal treatment, from a form that keeps layer to expose tiny glass ball is immersed in tiny glass ball and is kept the layer.Also have, in the microscopic examination cross section, tiny glass ball is to be contacted with sealer, is keeping roughly 75% of tiny glass ball diameter in protective seam.

Then, add the acrylic resin soln (trade name: RS-5000) 100 weight portions of En Xiai chemical industry company limited system, SANWA CHEMICAL CO., LTD. Zhi methylated melamine resin solution (trade name: 5.5 weight portions NIKALAC MS-11), and be 39.3 weight portions according to the ratio of MIBK/ toluene=4/6 as solvent, and mix, thereby make the resin matching fluid that the focus cambium layer is used, this resin matching fluid coated keep on layer and the tiny glass ball and in addition dry, thereby form the focus cambium layer that average thickness is approximately 25 μ m.

Then, with aluminium vacuum evaporation on the focus cambium layer, thereby obtain specular layer.

In addition, the peeling paper (trade name: E2P-H (P)) that uses LINTEC Corporation system is as stripping film, and, add BA/AA multipolymer (weight ratio: ethyl acetate/toluene BA/AA=90/10) (1/1) solution (solid constituent 34%) 100 weight portions, TOKUSHIKICo., Ltd. Zhi white color agents (trade name: AR-9127W) 9 weight portions, NipponPolyurethane Industry Co., Ltd. Zhi isocyanates crosslinking chemical (trade name: CoronateL) 0.5 weight portion, and as ethyl acetate 16.1 weight portions of solvent, and mix, thereby make the resin matching fluid that adhesive phase forms usefulness, this resin matching fluid coated on the stripping film and in addition dry, thereby form the adhesive phase that thickness is approximately 41 μ m.

Then, after applying specular layer and adhesive phase, peel off the engineering base material, thereby obtain to have the green enclosed lens retroreflection sheet of adhesive phase.

＜embodiment 2 〉

Except will be in embodiment 1 employed tiny glass ball be altered to and have the mean grain size shown in the table 1 and be that (trade name: NBK0922-1), all the other all make the green enclosed lens retroreflection sheet with adhesive phase with the method identical with embodiment 1 for the tiny glass ball of En Xiai chemical industry company limited system of size-grade distribution of the ratio shown in the table 1 as the particle in the scope of mean grain size ± 10 μ m.

＜embodiment 3 〉

Except will be in embodiment 1 employed tiny glass ball be altered to and have the mean grain size shown in the table 1 and be the Japanese Union Co. of the size-grade distribution of the ratio shown in the table 1 as the particle in the scope of mean grain size ± 10 μ m, (trade name: UB-B), all the other all make green enclosed lens retroreflection sheet with the method identical with embodiment 1 to the tiny glass ball of Ltd system.

＜embodiment 4 〉

Except will be in embodiment 1 employed tiny glass ball be altered to and have the mean grain size shown in the table 1 and be the Japanese Union Co. of the size-grade distribution of the ratio shown in the table 1 as the particle in the scope of mean grain size ± 10 μ m, (trade name: UB-C), all the other all make green enclosed lens retroreflection sheet with the method identical with embodiment 1 to the tiny glass ball of Ltd system.

＜embodiment 5 〉

Except will be in embodiment 1 employed tiny glass ball be altered to and have the mean grain size shown in the table 1 and be the Asahi Techno Glass Co. of the size-grade distribution of the ratio shown in the table 1 as the particle in the scope of mean grain size ± 10 μ m, Ltd. (trade name: SK-80), all the other all make green enclosed lens retroreflection sheet with the method identical with embodiment 1 to Zhi tiny glass ball.

＜embodiment 6 〉

Except will be in embodiment 1 employed tiny glass ball be altered to and have the mean grain size shown in the table 1 and be the Japanese Asahi Techno Glass Co. of the size-grade distribution of the ratio shown in the table 1 as the particle in the scope of mean grain size ± 10 μ m, Ltd. (trade name: SK-73), all the other all make green enclosed lens retroreflection sheet with the method identical with embodiment 1 to Zhi tiny glass ball.

＜comparative example 1 〉

As a comparative example 1, adopted the tiny glass ball (trade name: the green enclosed lens retroreflection sheet (trade name: 1800820AN of the En Xiai chemical industry company limited system of NB45) being made of using En Xiai chemical industry company limited system, batch number K266C), wherein, this tiny glass ball has the mean grain size shown in the table 1 and is the size-grade distribution of the ratio shown in the table 1 as particle in the scope of mean grain size ± 10 μ m.

＜comparative example 2 〉

As a comparative example 2, adopted the tiny glass ball (trade name: the green enclosed lens retroreflection sheet (trade name: 0810800AI of the En Xiai chemical industry company limited system of NB34) being made of using En Xiai chemical industry company limited system, batch number P870G), wherein, this tiny glass ball has the mean grain size shown in the table 1 and is the size-grade distribution of the ratio shown in the table 1 as particle in the scope of mean grain size ± 10 μ m.

＜comparative example 3 〉

With sieve the used tiny glass ball of the enclosed lens retroreflection sheet of comparative example 1 is screened, become the mean grain size shown in the table 1 and be the tiny glass ball of the size-grade distribution of the ratio shown in the table 1 as particle in the scope of mean grain size ± 10 μ m thereby pick out.So, use this tiny glass ball and make green enclosed lens retroreflection sheet with the method identical with embodiment 1.

＜comparative example 4 〉

Screen with the tiny glass ball of sieve, become the mean grain size shown in the table 1 and be the tiny glass ball of the size-grade distribution of the ratio shown in the table 1 as the particle in the scope of mean grain size ± 10 μ m thereby pick out to the enclosed lens retroreflection sheet that is used for comparative example 1.So, use this tiny glass ball and make green enclosed lens retroreflection sheet with the method identical with embodiment 1.

Measure the embodiment 1～6 that makes as mentioned above and the reflex reflection performance of comparative example 1～4 by above-mentioned assay method.Its result represents in table 1.

[table 1]

As shown in table 1, the mean grain size of the tiny glass ball of embodiment 1～6 is all in the scope of 70 μ m～100 μ m, and size-grade distribution is that particle more than 75% is in the scope of mean grain size ± 10 μ m.In addition, the size-grade distribution of the particle diameter of the tiny glass ball in the comparative example 1,3 is that ratio shared in the scope of mean grain size ± 10 μ m is less than 75%.Have, the mean grain size of the tiny glass ball in the comparative example 2 is outside the scope of 70 μ m～100 μ m again.Have again, the size-grade distribution of the particle diameter of the tiny glass ball in the comparative example 4 be ratio shared in the scope of mean grain size ± 10 μ m less than 75%, and the mean grain size of tiny glass ball is outside the scope of 70 μ m～100 μ m.

In addition, as shown in table 1, embodiment 1～6 is when view angle is 0.2 degree, and the light quantity of reflex reflection light is 56cd/1x/m ²More than.With respect to this, as shown in table 1, comparative example 1～4 is when view angle is 0.2 degree, and the light quantity of reflex reflection light becomes 43cd/1x/m ²Below.Therefore, embodiment 1～6 demonstrates the reflex reflection performance more excellent than comparative example 1～4 on relatively near positive direction.Have, as shown in table 1, when view angle was 0.5 degree, the light quantity of the reflex reflection light of embodiment 1～6 was 16cd/1x/m again ²More than, the light quantity of the reflex reflection light of comparative example 1～4 then becomes 18cd/1x/m ²Below.Therefore, embodiment 1～4 compares with comparative example 1～4, demonstrates with the reflex reflection performance more than the degree on the direction that relatively departs from the front.

In addition, the green enclosed lens retroreflection sheet of embodiment 1～6 presents bright-coloured green.Therefore, in the form and aspect of the green retroreflection sheet of measuring embodiment 1～6, in the XYZ color specification system (x, y)=(0.1328,0.3897).This value is in that (x is y)=(0.007,0.703) in the scope of (0.026,0.399) (0.177,0.362) (0.248,0.409).

In addition, the green of embodiment 1～6 and comparative example 1～4 is enclosed crystalline build retroreflection sheet and can be peelled off stripping film and be pasted on the wall.

Also have; can think to be arranged between maintenance layer with green enclosed lens retroreflection sheet of the embodiment 1～6 of reflex reflection performance so and sealer etc., just can confirm the pattern or the information that form by printed layers by visual by the printed layers that will show desirable pattern or information.

From as can be known above: liken comparative example 1～4 to into existing enclosed lens retroreflection sheet as the embodiment 1～6 of green enclosed lens retroreflection sheet of the present utility model, on relatively near positive direction, has higher reflex reflection performance, and be painted to green, and, can stick on desirable place, and thinking can be by in the green enclosed lens retroreflection sheet that printed layers is arranged on this embodiment 1～6, thereby just can confirm pattern or information by visual.

Utilize possibility on the industry

According to the utility model, green closed lens type retroreflective sheet can be provided, this green closed lens type retroreflective sheet can relatively approach on the positive direction, have the reflex reflection performance higher than existing enclosed lens retroreflection sheet, and can show desirable information or pattern, and then can stick on desirable place.

Claims (5)

1. green enclosed lens retroreflection sheet is characterized in that:

Possess: sealer, printed layers, maintenance layer, a plurality of tiny glass balls, focus cambium layer, specular layer and the adhesive phase that are kept by this maintenance layer,

The mean grain size of this tiny glass ball in the scope of 70 μ m～100 μ m, and size-grade distribution be particle more than 75% in the scope of mean grain size ± 10 μ m,

One deck at least in described sealer and the described maintenance layer is colored, and form and aspect are in connection in the XYZ color specification system (x is y)=(0.007,0.703) in this scope of 4 of (0.026,0.399) (0.177,0.362) (0.248,0.409).

2. green enclosed lens retroreflection sheet according to claim 1 is characterized in that:

The mean grain size of this tiny glass ball is 80 μ m～90 μ m.

3. green enclosed lens retroreflection sheet according to claim 1 and 2 is characterized in that:

The size-grade distribution of this tiny glass ball is for to account for more than 80% in the scope of mean grain size ± 10 μ m.

4. according to each described green enclosed lens retroreflection sheet in the claim 1～3, it is characterized in that:

In view angle is that 0.2 degree and incident angle are that the reflex reflection performance is 200cd/1x/m under the condition of 5 degree ²More than.

5. according to each described green enclosed lens retroreflection sheet in the claim 1～3, it is characterized in that:

In view angle is that 0.2 degree and incident angle are that the reflex reflection performance is 250cd/1x/m under the condition of 5 degree ²More than.

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