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CN202929229U - Lens Encapsulated Retroreflective Sheeting - Google Patents

Lens Encapsulated Retroreflective Sheeting Download PDF

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Publication number
CN202929229U
CN202929229U CN201220472128.4U CN201220472128U CN202929229U CN 202929229 U CN202929229 U CN 202929229U CN 201220472128 U CN201220472128 U CN 201220472128U CN 202929229 U CN202929229 U CN 202929229U
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CN
China
Prior art keywords
layer
eyeglass
retroreflection sheet
type retroreflection
encapsulation type
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Expired - Lifetime
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CN201220472128.4U
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Chinese (zh)
Inventor
山岸哲史
三宅弘
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Nippon Carbide Industries Hangzhou Co Ltd
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Nippon Carbide Industries Co Inc
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Priority to CN201220472128.4U priority Critical patent/CN202929229U/en
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Abstract

The utility model discloses an eyeglass packaging type retroreflection sheet. An eyeglass packaging type retroreflection sheet in the prior art has a disadvantage of difficulty in discriminating whether tempering is carried out. The eyeglass packaging type retroreflection sheet is provided with a surface protection layer, a printing layer, multiple glass beads, a focal point formation layer, a specular layer, a bonding agent layer and peeling material in order along a light incident direction, wherein a clamping layer is arranged among the multiple glass beads for clamping the multiple glass beads, and a ruin layer is partially arranged between the surface protection layer and the clamping layer. After the eyeglass packaging type retroreflection sheet is bonded on a pasted object, when the eyeglass packaging type retroreflection sheet is peeled from the pasted object, interface ruin occurs between the ruin layer and the layer which is contacted by the ruin layer, or cohesive ruin of the ruin layer occurs, so a specially-designed pattern of the eyeglass packaging type retroreflection sheet is displayed, and thereby whether tempering is carried out can be instantly discriminated.

Description

Eyeglass encapsulation type retroreflection sheet
Technical field
The utility model is the eyeglass encapsulation type reflector plate with effective new structure about the symbol of safety equipment class, the signboards etc. such as number plate class, clothes and life preserver that are used for the vehicles such as sign class, automobile and motorcycle such as road sign, engineering sign, various authenticating tag classes etc.
The background technology retroreflection sheet due to incident light is reflexed to light source direction, so has excellent observability night, is widely used in above-mentioned labels class etc.Eyeglass encapsulation type retroreflection sheet is the wherein a kind of of retroreflection sheet.About eyeglass encapsulation type retroreflection sheet, for example in No. 59-71848 bulletin of JP (patent documentation 1) of BERISURE, open detailed content is arranged.
in addition, WO2006/085690A1 bulletin (patent documentation 2) discloses the eyeglass encapsulation type retroreflection sheet with following architectural feature in detail: at least by comprising a large amount of micro glass balls, the holding sheet that the resin by having light peneration of this glass bead of clamping is made, be located at and have one deck between this glass bead and specular layer at least and form layer by the focus that the resin with light peneration is made, and the specular layer of incident light reflection is consisted of, and be provided with adhesive phase below specular layer, adhere on base material by this adhesive phase, in the time of above-mentioned eyeglass encapsulation type retroreflection sheet will being peeled off from this base material, focus forms layer and can peel off with glass bead, and/or can peel off between person's holding sheet, and/or person's focus forms layer can be damaged, the reflex reflection performance is impaired even to be lost thereby make.
But, there is no the record about alicyclic polyolefin resin and alicyclic acryl resin in patent document 1.There is no record or caution about breakage yet.Patent document 2 has been put down in writing and can have been prevented that meeting is to the hurtful forgery of focus formation layer of eyeglass encapsulation type retroreflection sheet, the eyeglass encapsulation type reflector plate of altering, but holding sheet, focus form layer all do not have painted, also not about with the disrupted record of the pattern displaying of unique design or caution.Therefore, former eyeglass encapsulation type retroreflection sheet has to be difficult to distinguish the shortcoming that whether has been tampered.
Summary of the invention
The utility model provides a kind of eyeglass encapsulation type retroreflection sheet for the deficiencies in the prior art.
The utility model eyeglass encapsulation type retroreflection sheet, along the light incident direction, set gradually sealer, printed layers, a plurality of glass bead, focus formation layer, specular layer, adhesive phase and peel off base material, wherein being provided with the holding sheet of clamping glass ball between a plurality of glass beads; Between sealer and holding sheet, part is provided with breakable layer;
The mean grain size of described glass bead is 10 μ m~150 μ m, is 20 μ m~100 μ m as the mean grain size of preferred glass ball, and size-grade distribution be particle more than 75% in the scope of mean grain size ± 10 μ m;
Described mirror-reflection layer thickness can be 0.05~0.2 μ m;
It is 20~80% that described breakable layer arranges rate.
The beneficial effects of the utility model: eyeglass encapsulation type retroreflection sheet is after adhering on adherend, when peeling off from adherend, by breakable layer contact with breakable layer the layer between interfacial failure, perhaps breakable layer cohesional failure, the unique design pattern of eyeglass encapsulation type retroreflection sheet is displayed, thereby a glance just can distinguish whether be tampered.
Description of drawings
Fig. 1 is the sectional view of wherein a kind of form of the utility model eyeglass encapsulation type retroreflection sheet.
In figure: sealer 1, printed layers 2, breakable layer 3, holding sheet 4, glass bead 5, focus form layer 6, specular layer 7, adhesive phase 8, peel off base material 9, along light incident direction 10.
Embodiment
It is below the more detailed explanation about the eyeglass encapsulation type retroreflection sheet of the utility model.
The utility model eyeglass encapsulation type retroreflection sheet, along light incident direction 10, set gradually sealer 1, printed layers 2, a plurality of glass bead 5, focus formation layer 6, specular layer 7, adhesive phase 8 and peel off base material 9, wherein being provided with the holding sheet of clamping glass ball between a plurality of glass beads; Between sealer and holding sheet, part is provided with breakable layer;
In the utility model, the effect of sealer 1 is the surface of protection eyeglass encapsulation type retroreflection sheet.Sealer 1 generally can adopt acryl resin, alkyd resin, fluororesin, vestolit, polyester, urethane resin, polycarbonate to make.In these resins, as the resin as sealer 1, consider from weatherability, the transparency, processability, take acryl resin as best.
In the utility model, the effect of printed layers 2 is that information is conveyed to the observer, is perhaps that eyeglass encapsulation type retroreflection sheet is painted.
Eyeglass encapsulation type retroreflection sheet of the present utility model; if sealer 1 is colored; so even without printed layers 2; breakable layer 3 described later also can be peeled off with the interface of sealer 1; perhaps cohesional failure occurs in breakable layer 3, and the unique design pattern of eyeglass encapsulation type retroreflection sheet is displayed.
Eyeglass encapsulation type retroreflection sheet of the present utility model; if the printed layers 2 that is colored is arranged; even sealer 1 does not have painted so; breakable layer 3 described later also can be peeled off with the interface of printed layers 2; perhaps cohesional failure occurs in breakable layer 3, and the unique design pattern of eyeglass encapsulation type retroreflection sheet is displayed.
In the utility model, interfacial failure or cohesional failure can appear in the position that is provided with breakable layer 3, and the position of not establishing breakable layer 3, wood destruction or interfacial failure appear in other layer meeting, the unique design pattern of eyeglass encapsulation type retroreflection sheet is displayed, thereby the situation that eyeglass encapsulation type retroreflection sheet of the present utility model is peeled off from adherend is very clear.
The effect of the breakable layer 3 in the utility model is: will stick on eyeglass encapsulation type retroreflection sheet on adherend when peeling off from adherend, make the interface peel of the layer 1,2,4 that contacts with breakable layer 3, perhaps breakable layer 3 cohesional failures, thus make eyeglass encapsulation type retroreflection sheet destroyed.
Breakable layer 3 of the present utility model is made by alicyclic polyolefin resin or alicyclic acryl resin.
The glass transition temperature Tg of these resins is high, with the close property at the position of contact failure layer a little less than.Therefore; in the time of eyeglass encapsulation type retroreflection sheet will being peeled off from adherend; interface between sealer 1 and breakable layer 3 will be destroyed; the perhaps interfacial failure between printed layers 2 and breakable layer 3; the perhaps interfacial failure between breakable layer 3 and holding sheet 4; perhaps breakable layer 3 cohesional failures, thus make eyeglass encapsulation type retroreflection sheet destroyed.
In the utility model, breakable layer 3 just part arranges.The form that in the utility model, breakable layer 3 is partly arranged can be clathrate etc.If the ratio with the relative eyeglass encapsulation type of area retroreflection sheet area that breakable layer is set arranges rate as breakable layer, arrange rate under be limited to the necessary rate that arranges of produce destroying, arrange rate on be limited to destroy after the unique design pattern can be distinguished the necessary rate that arranges, for example 20~80%.The unique design pattern can be for example clathrate, and so, in the time of eyeglass encapsulation type retroreflection sheet being peeled off from adherend, its vestige will display as the unique design pattern.
In the utility model, the method to set up of breakable layer 3 can be woodburytype, silk screen print method, flexographic printing method etc., wherein, but take the woodburytype of continuous printing and flexographic printing method as good.
In the utility model, if printed layers is traversed whole of eyeglass encapsulation type retroreflection sheet, when so eyeglass encapsulation type retroreflection sheet being peeled off from adherend, the layout of breakable layer will be destroyed in the lump, eyeglass encapsulation type retroreflection sheet will manifest pattern according to the design of breakable layer, makes eyeglass encapsulation type retroreflection sheet peel off very clear from adherend.
In the utility model, if printed layers just part is arranged on eyeglass encapsulation type retroreflection sheet, when so eyeglass encapsulation type retroreflection sheet being peeled off from adherend, the part of printed layers will be destroyed in the lump with the layout of breakable layer, printed layers formed damaged.This damaged meeting is recognized as the unique design pattern that makes eyeglass encapsulation type retroreflection sheet, thereby makes eyeglass encapsulation type retroreflection sheet peel off very clear from adherend.
In the utility model, if printed layers just partly is arranged on eyeglass encapsulation type retroreflection sheet, adopt so the breakable layer more tiny than the printed patterns of printed layers that pattern is set, the damaged easier of printed layers distinguished as the unique design pattern.
The alicyclic polyolefin resin that the breakable layer 3 of utility model uses, major key contains alicyclic structure.Be applicable in the alicyclic polyolefin resin of breakable layer 3 of the present utility model, the cyclopentanes resin have the cyclopentanes resin (Chemical formula 1 a), cyclopentene resinoid (Chemical formula 1 b), cyclopentadiene norbornene resin (Chemical formula 1 c), in addition, vinyl cyclopentanes resin have vinyl cyclopentanes resin (Chemical formula 2 a), vinyl cyclopentadiene norbornene resin (Chemical formula 2 b), perhaps cyclohexadiene resinoid (chemical formula 3a), cyclohexanes resin (chemical formula 3b).
Figure 930608DEST_PATH_IMAGE001
R 1, R 2, R 3, R 4, and R 5Be respectively hydrogen atom, alkyl, cyano group, cyclohexyl or alkyl carboxylic acid base, n represents number average degree of polymerization.
In the alicyclic acryl resin that breakable layer 3 of the present utility model uses, the ester moiety of propylene contains alicyclic structure.The alicyclic acryl resin that is applicable to breakable layer 3 of the present utility model is the alicyclic acryl resin shown in chemical formula 4.
Figure 512768DEST_PATH_IMAGE002
R 6Be hydrogen atom, methyl, R 7Be cyclohexyl, the base that represents with following chemical formula 4-1 or chemical formula 4-2.
Figure 264823DEST_PATH_IMAGE003
In the utility model, in the spendable resin of breakable layer 3, easily produce for making interfacial failure or cohesional failure, suitably be adjusted to suitable to molecular weight and bridge formation density etc.In the utility model, the suitable molecular weight ranges of the resin that breakable layer 3 uses is: take styrene converted weight molecular weight as 1,000~100, and 000,5,000~50,000 is better.Can make that generation of interfaces between sealer 1 and breakable layer 3 destroys, printed layers 2 is destroyed with generation of interfaces between breakable layer 3 or breakable layer 3 and holding sheet 4 between the molecular weight of the breakable layer 3 of generation of interfaces destruction compound used be 10; 000~100; 000,50; 000~100,000 is better.In addition, thereby can make breakable layer 3 cohesional failures cause that the molecular weight of the compound that the breakable layer 3 of destruction is used is 1,000~5,000,1,000~3,000 is better, but must suitably adjust according to molecular structure and polymerization.
In the utility model, the effect of holding sheet 4 is the light incident side clamping glass balls 5 from eyeglass encapsulation type retroreflection sheet.Holding sheet 4 generally can adopt acryl resin, alkyd resin, fluororesin, vestolit, polyester, urethane resin, polycarbonate to make.In these resins, as the resin as holding sheet 4, consider from weatherability, the transparency, processability, take acryl resin as best.
In the utility model, the effect of glass bead 5 is that the light that will inject eyeglass encapsulation type retroreflection sheet reflects.Inject the light that then glass bead 5 is refracted, pass focus described later and form layer 6, reflected by specular layer 7, again pass focus and form layer 6 and glass bead 5, the converse incident direction that is mapped to.
Glass bead 5 in the utility model can adopt and add the glass that silicon dioxide, aluminium oxide, zirconia, titanium etc. add the earth alkali metal such as the alkalinous metal such as lithium, sodium, potassium and magnesium, calcium, barium and make.
The size of glass bead 5 in the utility model can be diameter 10 μ m~150 μ m.Diameter 20 μ m~100 μ m are best.
Focus of the present utility model forms layer 6, can pass this layer from the light of glass bead 5, is then reflected by specular layer 7.Suitably control the thickness that focus forms layer 6, incident light will form focus at specular layer 7, and light is reflected onto incident direction.Focus forms layer 6 and usually can adopt acryl resin, alkyd resin, fluororesin, vestolit, polyester, urethane resin, polycarbonate, butyral resin to make.In these resins, as form the resin of layer 6 as focus, consider from weatherability, the transparency, coating adaptability, thermal stability, take acryl resin, butyral resin as best.
The effect of specular layer 7 of the present utility model is reflected light.Specular layer 7 is generally the metals such as aluminium, silver.Specular layer 7 forms with methods such as vacuum evaporation, sputters.The evaporation of aluminium can be 7~9 * 10 -4Vacuum tightness, the dissolving at temperature of 950~1100 ℃ of left and right aluminium of mmHg left and right are carried out.Specular layer 7 thickness can be 0.05~0.2 μ m.
Eyeglass encapsulation type retroreflection sheet of the present utility model on the technique base material, stacks gradually then clamping glass ball 5 between the holding sheet 4 of this duplexer of sealer 1, printed layers 2, breakable layer 3 and holding sheet 4.Then; the stack focus forms layer 6 on this duplexer; then specular layer 7 is set, with the specular layer 7 of this duplexer with by prepare separately to peel off the adhesive phase 8 that base material 9 stack adhesive phases 8 form bonding, at last the operation base material is peeled off and is made from sealer 1.
Eyeglass encapsulation type retroreflection sheet of the present utility model is after adhering on adherend, when peeling off from adherend, the interfacial failure between layers that contacts with breakable layer by breakable layer, perhaps breakable layer cohesional failure, the unique design pattern of eyeglass encapsulation type retroreflection sheet is displayed, thereby a glance just can distinguish whether be tampered.
Embodiment:
Below, illustrate the utility model in the mode of enumerating embodiment and comparative example.In addition, the measuring method of embodiment and comparative example use is as follows.
(1) collapse state
The base material of peeling off of the eyeglass encapsulation type retroreflection sheet that embodiment and comparative example are made is peeled off respectively, utilizes the adhesive phase on eyeglass encapsulation type retroreflection sheet, sticks on the aluminium sheet of thick 2mm, then from being peeled off eyeglass encapsulation type retroreflection sheet by sticking aluminium sheet.Destruction position and the collapse state of the sample reflector plate after visualization is peeled off from adherend are estimated according to the state that following evaluation criterion observation destroys.
A: collapse state: the part that is provided with breakable layer; the breakable layer cohesional failure; or between " sealer-breakable layer ", between " printed layers-breakable layer ", and " breakable layer-holding sheet " between any one interfacial failure, can be observed unique layout from the sealer side.
B: collapse state: the part that is provided with breakable layer; the breakable layer cohesional failure; or between " sealer-breakable layer ", between " printed layers-breakable layer ", and " breakable layer-holding sheet " between any one interfacial failure, but can't observe unique layout from the sealer side.
C: eyeglass encapsulation type retroreflection sheet breaks, and perhaps and between the layer of not contact failure layer destroys, and can't observe unique layout from the sealer side.
Embodiment 1
The thickness that adopts Teijin Ltd to produce is the transparent pet film trade name of 75 μ m: Supreme Being people Tetoron Film S-75 is as the operation base material.the acrylic resin soln trade name of sealer by adding En Xiai chemical industry company limited to produce, RS-1200) (100 pts.wt)., the methylated melamine resin solution of Co., Ltd. three and chemical production (trade name: NIKALAC MS-11) (14 pts.wt.), cellulose derivative (the trade name: CAB4 pts.wt.) that the TOKUSHIKI of Co., Ltd. produces, SHIPRO changes into the ultraviolet light absorber (trade name: SEESORB 103) (0.5 pts.wt.) that Co., Ltd. produces, levelling agent (the trade name that BYK Amada Co., Ltd. produces, BYK-300) (0.04 pts.wt.), catalyst (the trade name: BECKAMINE P-198) (0.12 pts.wt.) that the DIC of Co., Ltd. produces, and solvent 16.7 pts.wt. of mass ratio MIBK/ toluene=8/2, be applied to after mixing on the operation base material, make after heat drying.At this moment, the thickness of sealer is 36 μ m.
Printed layers is by using green silk-screen ink (the trade name Nikkalite N-3608) silk-screen that En Xiai company limited produces to make after drying on whole on sealer.Silk screen adopts 180 orders, and the thickness of dry rear printing ink is 8 μ m.
Breakable layer by the vinyl cyclopentadiene norbornene resin that uses JSR Corp. to produce on printed layers (trade name: ARTON FX4727) with the toluene solution mix and blend of 10wt% after, be printed as clathrate with woodburytype and make.Dried thickness is 1 μ m.
Acryl resin (the trade name: RS-3000) be isocyanic acid salt bridging agent (trade name: SUMIJUUL N-75) (12 pts.wt.) and solvent toluene (21 pts.wt.), (MIBK9 pts.wt.) that 100 pts.wt.s, Sumitomo Bayer Urethan Co., Ltd. produce of holding sheet by adding En Xiai Hangzhou chemical industry company limited to produce, be applied to after mix and blend on breakable layer, made in 5 minutes with 100 ℃ of dryings.At this moment, the thickness of holding sheet is 23 μ m.And holding sheet has adhesiveness.
It is the glass bead (trade name: NB-45S) that En Xiai Hangzhou chemical industry company limited of 68 μ m produces that glass bead adopts mean grain size.Glass bead is attached on stacked holding sheet, then with 145 ℃ of thermal treatments 3 minutes and 30 seconds, holding sheet is clamped it.Use microscopic examination cross section, holding sheet glass bead with the state clamping that glass bead is bumped into about diameter 1/2 in holding sheet.
Focus forms layer, and (trade name: RS-5000) (trade name: NIKALAC MS-11) (5.5 pts.wt.), mass ratio are MIBK/ toluene=4/6D solvent (39.3 pts.wt.) to the methylated melamine resin solution of (100 pts.wt.), Co., Ltd. three and chemical production by the acrylic resin soln that adds En Xiai Hangzhou chemical industry company limited and produce, be applied to after mixing on stacked holding sheet and glass bead, make after drying.The cambial thickness of focus this moment is 23 μ m.
Specular layer forms aluminium vacuum evaporation on layer in stacked focus and makes.Evaporation coating device is set as vacuum tightness 7~9 * 10 -4MmHg, alternating voltage 350~360V, electric current 115~120A.Aluminium and a small amount of titanium with about 950~1100 ℃ dissolvings, are formed layer with the aluminium-vapour deposition of vaporization in focus upper as specular layer.
Prepare separately adhesive phase.What employing Lintec Co., Ltd. produced peels off Paper trade name: E2P-HP as peeling off base material.The acrylic resin soln that adhesive phase adopts is the acryl resin of butyl acrylate/acrylic acid=9/1 by mass ratio, is to make after ethyl acetate/toluene of 5/5 is adjusted to 34wt% with solids content with mass ratio.The white color agents trade name of adhesive phase by adding acrylic resin soln (100 pts.wt.), the TOKUSHIKI of Co., Ltd. to produce: (AR-9127W) (9 pts.wt)., Nippon Polyurethane Industry Co., Ltd.'s isocyanic acid salt bridging agent (trade name: CORONATE L) (0.5 pts.wt.), solvent ethyl acetate (16.1 pts.wt.) of producing, be applied to after mixing and peel off on base material, make after drying.The thickness of adhering agent layer is 41 μ m.
Eyeglass encapsulation type retroreflection sheet of the present utility model will stack gradually the specular layer that forms, bonding with the adhesive phase of preparing separately after, the operation base material peeled off formed.
Embodiment 2
Except the sealer in embodiment 1 being colored as green and not arranging printed layers, other makes eyeglass encapsulation type retroreflection sheet in the same manner as in Example 1.
acrylic resin soln (the trade name: RS-1200) (100 pts.wt.) of sealer by adding En Xiai (Hangzhou) chemical industry company limited to produce, green colourant (the trade name: AR-8100) (22 pts.wt.) that the TOKUSHIKI of Co., Ltd. produces, the methylated melamine resin solution of Co., Ltd. three and chemical production (trade name: NIKALAC MS-11) (14 pts.wt.), cellulose derivative (the trade name: CAB) (4 pts.wt.) that the TOKUSHIKI of Co., Ltd. produces, SHIPRO changes into the ultraviolet light absorber (trade name: SEESORB 103) (0.5 pts.wt.) that Co., Ltd. produces, levelling agent (the trade name: BYK-300) (0.04 pts.wt.) that BYK Amada Co., Ltd. produces, catalyst (the trade name: BECKAMINE P-198) (0.12 pts.wt.) that the DIC of Co., Ltd. produces, and the solvent (16.7 pts.wt.) of mass ratio MIBK/ toluene=8/2, be applied to after mixing on the technique base material, make after heat drying.At this moment, the thickness of sealer is 36 μ m.
Embodiment 3
(trade name: (trade name: ARTON FX4727), other makes eyeglass encapsulation type retroreflection sheet in the same manner as in Example 1 OPTOREZ OZ1000) to replace vinyl cyclopentadiene norbornene resin in embodiment 1 except change into the alicyclic acryl resin that Co., Ltd. produces with Hitachi.
Comparative example 1
Breakable layer in there is no embodiment 1, other makes eyeglass encapsulation type retroreflection sheet in the same manner as in Example 1.
Comparative example 2
Except replace the clathrate breakable layer in embodiment 1 with the breakable layer that traverses whole, other makes eyeglass encapsulation type retroreflection sheet in the same manner as in Example 1.
After the eyeglass encapsulation type retroreflection sheet that above-described embodiment and comparative example are put down in writing was peeled off from adherend, the evaluation result of the collapse state of sample reflector plate was summed up as table 1.
[table 1]
? Collapse state
Embodiment 1 A 
Embodiment 2 A
Embodiment 3 A
Comparative example 1 C
Comparative example 2 B
In the eyeglass encapsulation type retroreflection sheet that embodiment 1 and embodiment 3 make, breakable layer cohesional failure, or the interfacial failure between printed layers and breakable layer, or the interfacial failure between breakable layer and holding sheet, the grid pattern of shows green is pasted on situation about peeling off after base material very clear.
In the eyeglass encapsulation type retroreflection sheet that embodiment 2 makes; breakable layer cohesional failure, or the interfacial failure between sealer and breakable layer, or the interfacial failure between breakable layer and holding sheet; the grid pattern of shows green is pasted on situation about peeling off after base material very clear.
In the eyeglass encapsulation type retroreflection sheet that comparative example 1 is made, the part reflector plate breaks, the interfacial failure of part adhesive phase and aluminium base, but the part of adhesive phase interface destroyed is not seen the unique design pattern.
In the eyeglass encapsulation type retroreflection sheet that comparative example 2 is made, breakable layer cohesional failure, or the interfacial failure between printed layers and breakable layer, or the interfacial failure between breakable layer and holding sheet, but do not see the unique design pattern.
By above the utility model, a kind of eyeglass encapsulation type retroreflection sheet can be provided, when this retroreflection sheet is peeled off from adherend, by breakable layer contact with breakable layer the layer between interfacial failure, perhaps breakable layer cohesional failure, the unique design pattern of eyeglass encapsulation type retroreflection sheet is displayed, thereby a glance just can distinguish whether be tampered.
Industrial utilizability
Eyeglass encapsulation type retroreflection sheet of the present utility model, can be used for symbol, the various authenticating tag class of safety equipment class, the signboard etc. such as number plate class, clothes, life preserver of the vehicles such as sign class, automobile and motorcycle of road sign, engineering sign etc., particularly can be used for the purposes about preventing from altering.

Claims (5)

1. eyeglass encapsulation type retroreflection sheet; it is characterized in that: along the light incident direction; set gradually sealer, printed layers, a plurality of glass bead, focus formation layer, specular layer, adhesive phase and peel off base material; wherein be provided with the holding sheet of clamping glass ball between a plurality of glass beads; between sealer and holding sheet, part is provided with breakable layer.
2. eyeglass encapsulation type retroreflection sheet according to claim 1, it is characterized in that: described glass bead diameter is 10 μ m~150 μ m.
3. eyeglass encapsulation type retroreflection sheet according to claim 1, it is characterized in that: described mirror-reflection layer thickness can be 0.05~0.2 μ m.
4. eyeglass encapsulation type retroreflection sheet according to claim 1, it is characterized in that: it is 20~80% that described breakable layer arranges rate.
5. eyeglass encapsulation type retroreflection sheet according to claim 2, it is characterized in that: the mean grain size of described glass bead is 20 μ m~100 μ m, and size-grade distribution be particle more than 75% in the scope of mean grain size ± 10 μ m.
CN201220472128.4U 2012-09-17 2012-09-17 Lens Encapsulated Retroreflective Sheeting Expired - Lifetime CN202929229U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105940325A (en) * 2014-01-31 2016-09-14 3M创新有限公司 Colored retroreflective articles

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105940325A (en) * 2014-01-31 2016-09-14 3M创新有限公司 Colored retroreflective articles
US10281623B2 (en) 2014-01-31 2019-05-07 3M Innovative Properties Company Colored retroreflective articles
CN111443413A (en) * 2014-01-31 2020-07-24 3M创新有限公司 Colored retroreflective articles

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